Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-vect-loop-manip.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
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date | Tue, 22 Mar 2011 17:18:12 +0900 |
parents | b7f97abdc517 |
children | 04ced10e8804 |
rev | line source |
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1 /* Vectorizer Specific Loop Manipulations |
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2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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3 Free Software Foundation, Inc. |
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4 Contributed by Dorit Naishlos <dorit@il.ibm.com> |
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5 and Ira Rosen <irar@il.ibm.com> |
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6 |
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7 This file is part of GCC. |
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8 |
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9 GCC is free software; you can redistribute it and/or modify it under |
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10 the terms of the GNU General Public License as published by the Free |
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11 Software Foundation; either version 3, or (at your option) any later |
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12 version. |
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13 |
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14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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15 WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 for more details. |
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18 |
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19 You should have received a copy of the GNU General Public License |
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20 along with GCC; see the file COPYING3. If not see |
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21 <http://www.gnu.org/licenses/>. */ |
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22 |
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23 #include "config.h" |
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24 #include "system.h" |
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25 #include "coretypes.h" |
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26 #include "tm.h" |
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27 #include "ggc.h" |
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28 #include "tree.h" |
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29 #include "basic-block.h" |
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30 #include "tree-pretty-print.h" |
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31 #include "gimple-pretty-print.h" |
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32 #include "tree-flow.h" |
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33 #include "tree-dump.h" |
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34 #include "cfgloop.h" |
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35 #include "cfglayout.h" |
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36 #include "diagnostic-core.h" |
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37 #include "tree-scalar-evolution.h" |
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38 #include "tree-vectorizer.h" |
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39 #include "langhooks.h" |
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40 |
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41 /************************************************************************* |
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42 Simple Loop Peeling Utilities |
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43 |
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44 Utilities to support loop peeling for vectorization purposes. |
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45 *************************************************************************/ |
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46 |
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47 |
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48 /* Renames the use *OP_P. */ |
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49 |
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50 static void |
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51 rename_use_op (use_operand_p op_p) |
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52 { |
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53 tree new_name; |
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54 |
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55 if (TREE_CODE (USE_FROM_PTR (op_p)) != SSA_NAME) |
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56 return; |
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57 |
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58 new_name = get_current_def (USE_FROM_PTR (op_p)); |
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59 |
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60 /* Something defined outside of the loop. */ |
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61 if (!new_name) |
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62 return; |
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63 |
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64 /* An ordinary ssa name defined in the loop. */ |
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65 |
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66 SET_USE (op_p, new_name); |
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67 } |
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68 |
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69 |
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70 /* Renames the variables in basic block BB. */ |
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71 |
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72 void |
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73 rename_variables_in_bb (basic_block bb) |
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74 { |
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75 gimple_stmt_iterator gsi; |
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76 gimple stmt; |
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77 use_operand_p use_p; |
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78 ssa_op_iter iter; |
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79 edge e; |
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80 edge_iterator ei; |
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81 struct loop *loop = bb->loop_father; |
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82 |
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83 for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
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84 { |
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85 stmt = gsi_stmt (gsi); |
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86 FOR_EACH_SSA_USE_OPERAND (use_p, stmt, iter, SSA_OP_ALL_USES) |
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87 rename_use_op (use_p); |
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88 } |
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89 |
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90 FOR_EACH_EDGE (e, ei, bb->succs) |
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91 { |
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92 if (!flow_bb_inside_loop_p (loop, e->dest)) |
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93 continue; |
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94 for (gsi = gsi_start_phis (e->dest); !gsi_end_p (gsi); gsi_next (&gsi)) |
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95 rename_use_op (PHI_ARG_DEF_PTR_FROM_EDGE (gsi_stmt (gsi), e)); |
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96 } |
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97 } |
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98 |
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99 |
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100 /* Renames variables in new generated LOOP. */ |
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101 |
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102 void |
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103 rename_variables_in_loop (struct loop *loop) |
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104 { |
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105 unsigned i; |
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106 basic_block *bbs; |
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107 |
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108 bbs = get_loop_body (loop); |
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109 |
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110 for (i = 0; i < loop->num_nodes; i++) |
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111 rename_variables_in_bb (bbs[i]); |
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112 |
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113 free (bbs); |
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114 } |
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115 |
63
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116 typedef struct |
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117 { |
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118 tree from, to; |
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119 basic_block bb; |
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120 } adjust_info; |
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121 |
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122 DEF_VEC_O(adjust_info); |
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123 DEF_VEC_ALLOC_O_STACK(adjust_info); |
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124 #define VEC_adjust_info_stack_alloc(alloc) VEC_stack_alloc (adjust_info, alloc) |
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125 |
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126 /* A stack of values to be adjusted in debug stmts. We have to |
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127 process them LIFO, so that the closest substitution applies. If we |
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128 processed them FIFO, without the stack, we might substitute uses |
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129 with a PHI DEF that would soon become non-dominant, and when we got |
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130 to the suitable one, it wouldn't have anything to substitute any |
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131 more. */ |
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132 static VEC(adjust_info, stack) *adjust_vec; |
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133 |
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134 /* Adjust any debug stmts that referenced AI->from values to use the |
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135 loop-closed AI->to, if the references are dominated by AI->bb and |
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136 not by the definition of AI->from. */ |
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137 |
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138 static void |
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139 adjust_debug_stmts_now (adjust_info *ai) |
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140 { |
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141 basic_block bbphi = ai->bb; |
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142 tree orig_def = ai->from; |
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143 tree new_def = ai->to; |
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144 imm_use_iterator imm_iter; |
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145 gimple stmt; |
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146 basic_block bbdef = gimple_bb (SSA_NAME_DEF_STMT (orig_def)); |
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147 |
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148 gcc_assert (dom_info_available_p (CDI_DOMINATORS)); |
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149 |
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150 /* Adjust any debug stmts that held onto non-loop-closed |
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151 references. */ |
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152 FOR_EACH_IMM_USE_STMT (stmt, imm_iter, orig_def) |
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153 { |
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154 use_operand_p use_p; |
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155 basic_block bbuse; |
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156 |
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157 if (!is_gimple_debug (stmt)) |
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158 continue; |
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159 |
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160 gcc_assert (gimple_debug_bind_p (stmt)); |
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161 |
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162 bbuse = gimple_bb (stmt); |
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163 |
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164 if ((bbuse == bbphi |
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165 || dominated_by_p (CDI_DOMINATORS, bbuse, bbphi)) |
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166 && !(bbuse == bbdef |
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167 || dominated_by_p (CDI_DOMINATORS, bbuse, bbdef))) |
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168 { |
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169 if (new_def) |
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170 FOR_EACH_IMM_USE_ON_STMT (use_p, imm_iter) |
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171 SET_USE (use_p, new_def); |
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172 else |
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173 { |
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174 gimple_debug_bind_reset_value (stmt); |
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175 update_stmt (stmt); |
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176 } |
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177 } |
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178 } |
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179 } |
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180 |
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181 /* Adjust debug stmts as scheduled before. */ |
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182 |
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183 static void |
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184 adjust_vec_debug_stmts (void) |
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185 { |
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186 if (!MAY_HAVE_DEBUG_STMTS) |
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187 return; |
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188 |
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189 gcc_assert (adjust_vec); |
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190 |
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191 while (!VEC_empty (adjust_info, adjust_vec)) |
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192 { |
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193 adjust_debug_stmts_now (VEC_last (adjust_info, adjust_vec)); |
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194 VEC_pop (adjust_info, adjust_vec); |
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195 } |
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196 |
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197 VEC_free (adjust_info, stack, adjust_vec); |
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198 } |
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199 |
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200 /* Adjust any debug stmts that referenced FROM values to use the |
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201 loop-closed TO, if the references are dominated by BB and not by |
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202 the definition of FROM. If adjust_vec is non-NULL, adjustments |
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203 will be postponed until adjust_vec_debug_stmts is called. */ |
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204 |
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205 static void |
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206 adjust_debug_stmts (tree from, tree to, basic_block bb) |
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207 { |
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208 adjust_info ai; |
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209 |
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210 if (MAY_HAVE_DEBUG_STMTS && TREE_CODE (from) == SSA_NAME |
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211 && SSA_NAME_VAR (from) != gimple_vop (cfun)) |
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212 { |
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213 ai.from = from; |
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214 ai.to = to; |
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215 ai.bb = bb; |
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216 |
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217 if (adjust_vec) |
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218 VEC_safe_push (adjust_info, stack, adjust_vec, &ai); |
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219 else |
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220 adjust_debug_stmts_now (&ai); |
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221 } |
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222 } |
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223 |
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224 /* Change E's phi arg in UPDATE_PHI to NEW_DEF, and record information |
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225 to adjust any debug stmts that referenced the old phi arg, |
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226 presumably non-loop-closed references left over from other |
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227 transformations. */ |
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228 |
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229 static void |
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230 adjust_phi_and_debug_stmts (gimple update_phi, edge e, tree new_def) |
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231 { |
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232 tree orig_def = PHI_ARG_DEF_FROM_EDGE (update_phi, e); |
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233 |
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234 SET_PHI_ARG_DEF (update_phi, e->dest_idx, new_def); |
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235 |
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236 if (MAY_HAVE_DEBUG_STMTS) |
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237 adjust_debug_stmts (orig_def, PHI_RESULT (update_phi), |
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238 gimple_bb (update_phi)); |
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239 } |
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240 |
55
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241 |
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242 /* Update the PHI nodes of NEW_LOOP. |
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243 |
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244 NEW_LOOP is a duplicate of ORIG_LOOP. |
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245 AFTER indicates whether NEW_LOOP executes before or after ORIG_LOOP: |
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246 AFTER is true if NEW_LOOP executes after ORIG_LOOP, and false if it |
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247 executes before it. */ |
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248 |
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249 static void |
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250 slpeel_update_phis_for_duplicate_loop (struct loop *orig_loop, |
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251 struct loop *new_loop, bool after) |
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252 { |
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253 tree new_ssa_name; |
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254 gimple phi_new, phi_orig; |
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255 tree def; |
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256 edge orig_loop_latch = loop_latch_edge (orig_loop); |
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257 edge orig_entry_e = loop_preheader_edge (orig_loop); |
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258 edge new_loop_exit_e = single_exit (new_loop); |
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259 edge new_loop_entry_e = loop_preheader_edge (new_loop); |
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260 edge entry_arg_e = (after ? orig_loop_latch : orig_entry_e); |
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261 gimple_stmt_iterator gsi_new, gsi_orig; |
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262 |
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263 /* |
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264 step 1. For each loop-header-phi: |
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265 Add the first phi argument for the phi in NEW_LOOP |
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266 (the one associated with the entry of NEW_LOOP) |
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267 |
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268 step 2. For each loop-header-phi: |
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269 Add the second phi argument for the phi in NEW_LOOP |
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270 (the one associated with the latch of NEW_LOOP) |
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271 |
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272 step 3. Update the phis in the successor block of NEW_LOOP. |
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273 |
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274 case 1: NEW_LOOP was placed before ORIG_LOOP: |
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275 The successor block of NEW_LOOP is the header of ORIG_LOOP. |
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276 Updating the phis in the successor block can therefore be done |
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277 along with the scanning of the loop header phis, because the |
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278 header blocks of ORIG_LOOP and NEW_LOOP have exactly the same |
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279 phi nodes, organized in the same order. |
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280 |
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281 case 2: NEW_LOOP was placed after ORIG_LOOP: |
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282 The successor block of NEW_LOOP is the original exit block of |
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283 ORIG_LOOP - the phis to be updated are the loop-closed-ssa phis. |
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284 We postpone updating these phis to a later stage (when |
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285 loop guards are added). |
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286 */ |
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287 |
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288 |
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289 /* Scan the phis in the headers of the old and new loops |
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290 (they are organized in exactly the same order). */ |
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291 |
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292 for (gsi_new = gsi_start_phis (new_loop->header), |
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293 gsi_orig = gsi_start_phis (orig_loop->header); |
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294 !gsi_end_p (gsi_new) && !gsi_end_p (gsi_orig); |
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295 gsi_next (&gsi_new), gsi_next (&gsi_orig)) |
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296 { |
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297 source_location locus; |
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298 phi_new = gsi_stmt (gsi_new); |
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299 phi_orig = gsi_stmt (gsi_orig); |
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300 |
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301 /* step 1. */ |
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302 def = PHI_ARG_DEF_FROM_EDGE (phi_orig, entry_arg_e); |
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303 locus = gimple_phi_arg_location_from_edge (phi_orig, entry_arg_e); |
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304 add_phi_arg (phi_new, def, new_loop_entry_e, locus); |
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305 |
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306 /* step 2. */ |
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307 def = PHI_ARG_DEF_FROM_EDGE (phi_orig, orig_loop_latch); |
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308 locus = gimple_phi_arg_location_from_edge (phi_orig, orig_loop_latch); |
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309 if (TREE_CODE (def) != SSA_NAME) |
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310 continue; |
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311 |
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312 new_ssa_name = get_current_def (def); |
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313 if (!new_ssa_name) |
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314 { |
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315 /* This only happens if there are no definitions |
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316 inside the loop. use the phi_result in this case. */ |
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317 new_ssa_name = PHI_RESULT (phi_new); |
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318 } |
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319 |
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320 /* An ordinary ssa name defined in the loop. */ |
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321 add_phi_arg (phi_new, new_ssa_name, loop_latch_edge (new_loop), locus); |
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322 |
63
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323 /* Drop any debug references outside the loop, if they would |
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
324 become ill-formed SSA. */ |
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
325 adjust_debug_stmts (def, NULL, single_exit (orig_loop)->dest); |
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
326 |
55
77e2b8dfacca
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parents:
diff
changeset
|
327 /* step 3 (case 1). */ |
77e2b8dfacca
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parents:
diff
changeset
|
328 if (!after) |
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parents:
diff
changeset
|
329 { |
77e2b8dfacca
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parents:
diff
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|
330 gcc_assert (new_loop_exit_e == orig_entry_e); |
63
b7f97abdc517
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
331 adjust_phi_and_debug_stmts (phi_orig, new_loop_exit_e, new_ssa_name); |
55
77e2b8dfacca
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parents:
diff
changeset
|
332 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
333 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
334 } |
77e2b8dfacca
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parents:
diff
changeset
|
335 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
336 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
337 /* Update PHI nodes for a guard of the LOOP. |
77e2b8dfacca
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parents:
diff
changeset
|
338 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
339 Input: |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
340 - LOOP, GUARD_EDGE: LOOP is a loop for which we added guard code that |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
341 controls whether LOOP is to be executed. GUARD_EDGE is the edge that |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
342 originates from the guard-bb, skips LOOP and reaches the (unique) exit |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
343 bb of LOOP. This loop-exit-bb is an empty bb with one successor. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
344 We denote this bb NEW_MERGE_BB because before the guard code was added |
77e2b8dfacca
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parents:
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changeset
|
345 it had a single predecessor (the LOOP header), and now it became a merge |
77e2b8dfacca
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parents:
diff
changeset
|
346 point of two paths - the path that ends with the LOOP exit-edge, and |
77e2b8dfacca
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parents:
diff
changeset
|
347 the path that ends with GUARD_EDGE. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
348 - NEW_EXIT_BB: New basic block that is added by this function between LOOP |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
349 and NEW_MERGE_BB. It is used to place loop-closed-ssa-form exit-phis. |
77e2b8dfacca
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parents:
diff
changeset
|
350 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
351 ===> The CFG before the guard-code was added: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
352 LOOP_header_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
353 loop_body |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
354 if (exit_loop) goto update_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
355 else goto LOOP_header_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
356 update_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
357 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
358 ==> The CFG after the guard-code was added: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
359 guard_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
360 if (LOOP_guard_condition) goto new_merge_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
361 else goto LOOP_header_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
362 LOOP_header_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
363 loop_body |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
364 if (exit_loop_condition) goto new_merge_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
365 else goto LOOP_header_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
366 new_merge_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
367 goto update_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
368 update_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
369 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
370 ==> The CFG after this function: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
371 guard_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
372 if (LOOP_guard_condition) goto new_merge_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
373 else goto LOOP_header_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
374 LOOP_header_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
375 loop_body |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
376 if (exit_loop_condition) goto new_exit_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
377 else goto LOOP_header_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
378 new_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
379 new_merge_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
380 goto update_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
381 update_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
382 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
383 This function: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
384 1. creates and updates the relevant phi nodes to account for the new |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
385 incoming edge (GUARD_EDGE) into NEW_MERGE_BB. This involves: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
386 1.1. Create phi nodes at NEW_MERGE_BB. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
387 1.2. Update the phi nodes at the successor of NEW_MERGE_BB (denoted |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 UPDATE_BB). UPDATE_BB was the exit-bb of LOOP before NEW_MERGE_BB |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
389 2. preserves loop-closed-ssa-form by creating the required phi nodes |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
390 at the exit of LOOP (i.e, in NEW_EXIT_BB). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
391 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
392 There are two flavors to this function: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
393 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
394 slpeel_update_phi_nodes_for_guard1: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
395 Here the guard controls whether we enter or skip LOOP, where LOOP is a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
396 prolog_loop (loop1 below), and the new phis created in NEW_MERGE_BB are |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397 for variables that have phis in the loop header. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 slpeel_update_phi_nodes_for_guard2: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 Here the guard controls whether we enter or skip LOOP, where LOOP is an |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 epilog_loop (loop2 below), and the new phis created in NEW_MERGE_BB are |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 for variables that have phis in the loop exit. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 I.E., the overall structure is: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406 loop1_preheader_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 guard1 (goto loop1/merge1_bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 loop1 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 loop1_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 guard2 (goto merge1_bb/merge2_bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 merge1_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 loop2 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 loop2_exit_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 merge2_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 next_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
417 slpeel_update_phi_nodes_for_guard1 takes care of creating phis in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 loop1_exit_bb and merge1_bb. These are entry phis (phis for the vars |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
419 that have phis in loop1->header). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
420 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 slpeel_update_phi_nodes_for_guard2 takes care of creating phis in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
422 loop2_exit_bb and merge2_bb. These are exit phis (phis for the vars |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
423 that have phis in next_bb). It also adds some of these phis to |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
424 loop1_exit_bb. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
425 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
426 slpeel_update_phi_nodes_for_guard1 is always called before |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
427 slpeel_update_phi_nodes_for_guard2. They are both needed in order |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 to create correct data-flow and loop-closed-ssa-form. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
429 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
430 Generally slpeel_update_phi_nodes_for_guard1 creates phis for variables |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 that change between iterations of a loop (and therefore have a phi-node |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
432 at the loop entry), whereas slpeel_update_phi_nodes_for_guard2 creates |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 phis for variables that are used out of the loop (and therefore have |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 loop-closed exit phis). Some variables may be both updated between |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
435 iterations and used after the loop. This is why in loop1_exit_bb we |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436 may need both entry_phis (created by slpeel_update_phi_nodes_for_guard1) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
437 and exit phis (created by slpeel_update_phi_nodes_for_guard2). |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
438 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
439 - IS_NEW_LOOP: if IS_NEW_LOOP is true, then LOOP is a newly created copy of |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
440 an original loop. i.e., we have: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
441 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
442 orig_loop |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
443 guard_bb (goto LOOP/new_merge) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
444 new_loop <-- LOOP |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
445 new_exit |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
446 new_merge |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
447 next_bb |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
448 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
449 If IS_NEW_LOOP is false, then LOOP is an original loop, in which case we |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
450 have: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
451 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
452 new_loop |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
453 guard_bb (goto LOOP/new_merge) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
454 orig_loop <-- LOOP |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
455 new_exit |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
456 new_merge |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
457 next_bb |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
458 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
459 The SSA names defined in the original loop have a current |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
460 reaching definition that that records the corresponding new |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
461 ssa-name used in the new duplicated loop copy. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
462 */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
463 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
464 /* Function slpeel_update_phi_nodes_for_guard1 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
465 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
466 Input: |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
467 - GUARD_EDGE, LOOP, IS_NEW_LOOP, NEW_EXIT_BB - as explained above. |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
468 - DEFS - a bitmap of ssa names to mark new names for which we recorded |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
469 information. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
470 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
471 In the context of the overall structure, we have: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
472 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
473 loop1_preheader_bb: |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
474 guard1 (goto loop1/merge1_bb) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
475 LOOP-> loop1 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
476 loop1_exit_bb: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
477 guard2 (goto merge1_bb/merge2_bb) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
478 merge1_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
479 loop2 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
480 loop2_exit_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
481 merge2_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
482 next_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
483 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
484 For each name updated between loop iterations (i.e - for each name that has |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
485 an entry (loop-header) phi in LOOP) we create a new phi in: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
486 1. merge1_bb (to account for the edge from guard1) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
487 2. loop1_exit_bb (an exit-phi to keep LOOP in loop-closed form) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
488 */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
489 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
490 static void |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
491 slpeel_update_phi_nodes_for_guard1 (edge guard_edge, struct loop *loop, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
492 bool is_new_loop, basic_block *new_exit_bb, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
493 bitmap *defs) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
494 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
495 gimple orig_phi, new_phi; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
496 gimple update_phi, update_phi2; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
497 tree guard_arg, loop_arg; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
498 basic_block new_merge_bb = guard_edge->dest; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
499 edge e = EDGE_SUCC (new_merge_bb, 0); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
500 basic_block update_bb = e->dest; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
501 basic_block orig_bb = loop->header; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
502 edge new_exit_e; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
503 tree current_new_name; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
504 gimple_stmt_iterator gsi_orig, gsi_update; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
505 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
506 /* Create new bb between loop and new_merge_bb. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
507 *new_exit_bb = split_edge (single_exit (loop)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
508 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
509 new_exit_e = EDGE_SUCC (*new_exit_bb, 0); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
510 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
511 for (gsi_orig = gsi_start_phis (orig_bb), |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
512 gsi_update = gsi_start_phis (update_bb); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
513 !gsi_end_p (gsi_orig) && !gsi_end_p (gsi_update); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
514 gsi_next (&gsi_orig), gsi_next (&gsi_update)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
515 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
516 source_location loop_locus, guard_locus;; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
517 orig_phi = gsi_stmt (gsi_orig); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
518 update_phi = gsi_stmt (gsi_update); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
519 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
520 /** 1. Handle new-merge-point phis **/ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
521 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
522 /* 1.1. Generate new phi node in NEW_MERGE_BB: */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
523 new_phi = create_phi_node (SSA_NAME_VAR (PHI_RESULT (orig_phi)), |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
524 new_merge_bb); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
525 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
526 /* 1.2. NEW_MERGE_BB has two incoming edges: GUARD_EDGE and the exit-edge |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
527 of LOOP. Set the two phi args in NEW_PHI for these edges: */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
528 loop_arg = PHI_ARG_DEF_FROM_EDGE (orig_phi, EDGE_SUCC (loop->latch, 0)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
529 loop_locus = gimple_phi_arg_location_from_edge (orig_phi, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
530 EDGE_SUCC (loop->latch, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
531 0)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
532 guard_arg = PHI_ARG_DEF_FROM_EDGE (orig_phi, loop_preheader_edge (loop)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
533 guard_locus |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
534 = gimple_phi_arg_location_from_edge (orig_phi, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
535 loop_preheader_edge (loop)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
536 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
537 add_phi_arg (new_phi, loop_arg, new_exit_e, loop_locus); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
538 add_phi_arg (new_phi, guard_arg, guard_edge, guard_locus); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
539 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
540 /* 1.3. Update phi in successor block. */ |
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541 gcc_assert (PHI_ARG_DEF_FROM_EDGE (update_phi, e) == loop_arg |
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542 || PHI_ARG_DEF_FROM_EDGE (update_phi, e) == guard_arg); |
63
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55
diff
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543 adjust_phi_and_debug_stmts (update_phi, e, PHI_RESULT (new_phi)); |
55
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544 update_phi2 = new_phi; |
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545 |
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546 |
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547 /** 2. Handle loop-closed-ssa-form phis **/ |
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548 |
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549 if (!is_gimple_reg (PHI_RESULT (orig_phi))) |
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parents:
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550 continue; |
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|
551 |
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parents:
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changeset
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552 /* 2.1. Generate new phi node in NEW_EXIT_BB: */ |
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553 new_phi = create_phi_node (SSA_NAME_VAR (PHI_RESULT (orig_phi)), |
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parents:
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554 *new_exit_bb); |
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parents:
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555 |
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parents:
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556 /* 2.2. NEW_EXIT_BB has one incoming edge: the exit-edge of the loop. */ |
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parents:
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557 add_phi_arg (new_phi, loop_arg, single_exit (loop), loop_locus); |
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558 |
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parents:
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559 /* 2.3. Update phi in successor of NEW_EXIT_BB: */ |
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560 gcc_assert (PHI_ARG_DEF_FROM_EDGE (update_phi2, new_exit_e) == loop_arg); |
63
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parents:
55
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561 adjust_phi_and_debug_stmts (update_phi2, new_exit_e, |
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562 PHI_RESULT (new_phi)); |
55
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parents:
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563 |
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parents:
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564 /* 2.4. Record the newly created name with set_current_def. |
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parents:
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565 We want to find a name such that |
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parents:
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566 name = get_current_def (orig_loop_name) |
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parents:
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567 and to set its current definition as follows: |
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parents:
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568 set_current_def (name, new_phi_name) |
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parents:
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|
569 |
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parents:
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570 If LOOP is a new loop then loop_arg is already the name we're |
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parents:
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571 looking for. If LOOP is the original loop, then loop_arg is |
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parents:
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|
572 the orig_loop_name and the relevant name is recorded in its |
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parents:
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|
573 current reaching definition. */ |
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parents:
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574 if (is_new_loop) |
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parents:
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575 current_new_name = loop_arg; |
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parents:
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576 else |
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parents:
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|
577 { |
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parents:
diff
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578 current_new_name = get_current_def (loop_arg); |
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parents:
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579 /* current_def is not available only if the variable does not |
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parents:
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|
580 change inside the loop, in which case we also don't care |
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parents:
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581 about recording a current_def for it because we won't be |
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parents:
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582 trying to create loop-exit-phis for it. */ |
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parents:
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|
583 if (!current_new_name) |
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parents:
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changeset
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584 continue; |
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parents:
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|
585 } |
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parents:
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|
586 gcc_assert (get_current_def (current_new_name) == NULL_TREE); |
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parents:
diff
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|
587 |
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parents:
diff
changeset
|
588 set_current_def (current_new_name, PHI_RESULT (new_phi)); |
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parents:
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589 bitmap_set_bit (*defs, SSA_NAME_VERSION (current_new_name)); |
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parents:
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changeset
|
590 } |
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parents:
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|
591 } |
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parents:
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|
592 |
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parents:
diff
changeset
|
593 |
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parents:
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|
594 /* Function slpeel_update_phi_nodes_for_guard2 |
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parents:
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changeset
|
595 |
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parents:
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|
596 Input: |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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597 - GUARD_EDGE, LOOP, IS_NEW_LOOP, NEW_EXIT_BB - as explained above. |
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parents:
diff
changeset
|
598 |
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parents:
diff
changeset
|
599 In the context of the overall structure, we have: |
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parents:
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changeset
|
600 |
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parents:
diff
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|
601 loop1_preheader_bb: |
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parents:
diff
changeset
|
602 guard1 (goto loop1/merge1_bb) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
603 loop1 |
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parents:
diff
changeset
|
604 loop1_exit_bb: |
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parents:
diff
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|
605 guard2 (goto merge1_bb/merge2_bb) |
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parents:
diff
changeset
|
606 merge1_bb |
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parents:
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607 LOOP-> loop2 |
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parents:
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|
608 loop2_exit_bb |
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parents:
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|
609 merge2_bb |
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parents:
diff
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|
610 next_bb |
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parents:
diff
changeset
|
611 |
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parents:
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612 For each name used out side the loop (i.e - for each name that has an exit |
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parents:
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|
613 phi in next_bb) we create a new phi in: |
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parents:
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614 1. merge2_bb (to account for the edge from guard_bb) |
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parents:
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615 2. loop2_exit_bb (an exit-phi to keep LOOP in loop-closed form) |
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parents:
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616 3. guard2 bb (an exit phi to keep the preceding loop in loop-closed form), |
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parents:
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617 if needed (if it wasn't handled by slpeel_update_phis_nodes_for_phi1). |
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parents:
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618 */ |
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parents:
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|
619 |
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parents:
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|
620 static void |
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parents:
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changeset
|
621 slpeel_update_phi_nodes_for_guard2 (edge guard_edge, struct loop *loop, |
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622 bool is_new_loop, basic_block *new_exit_bb) |
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|
623 { |
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624 gimple orig_phi, new_phi; |
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625 gimple update_phi, update_phi2; |
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parents:
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626 tree guard_arg, loop_arg; |
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627 basic_block new_merge_bb = guard_edge->dest; |
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|
628 edge e = EDGE_SUCC (new_merge_bb, 0); |
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parents:
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|
629 basic_block update_bb = e->dest; |
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parents:
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|
630 edge new_exit_e; |
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parents:
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|
631 tree orig_def, orig_def_new_name; |
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parents:
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|
632 tree new_name, new_name2; |
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parents:
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|
633 tree arg; |
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634 gimple_stmt_iterator gsi; |
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parents:
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changeset
|
635 |
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parents:
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changeset
|
636 /* Create new bb between loop and new_merge_bb. */ |
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parents:
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|
637 *new_exit_bb = split_edge (single_exit (loop)); |
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parents:
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|
638 |
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parents:
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|
639 new_exit_e = EDGE_SUCC (*new_exit_bb, 0); |
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parents:
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|
640 |
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parents:
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641 for (gsi = gsi_start_phis (update_bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
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parents:
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|
642 { |
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parents:
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|
643 update_phi = gsi_stmt (gsi); |
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parents:
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|
644 orig_phi = update_phi; |
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parents:
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|
645 orig_def = PHI_ARG_DEF_FROM_EDGE (orig_phi, e); |
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parents:
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|
646 /* This loop-closed-phi actually doesn't represent a use |
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parents:
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647 out of the loop - the phi arg is a constant. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
648 if (TREE_CODE (orig_def) != SSA_NAME) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
649 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
650 orig_def_new_name = get_current_def (orig_def); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
651 arg = NULL_TREE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
652 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
653 /** 1. Handle new-merge-point phis **/ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
654 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
655 /* 1.1. Generate new phi node in NEW_MERGE_BB: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
656 new_phi = create_phi_node (SSA_NAME_VAR (PHI_RESULT (orig_phi)), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
657 new_merge_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
658 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
659 /* 1.2. NEW_MERGE_BB has two incoming edges: GUARD_EDGE and the exit-edge |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
660 of LOOP. Set the two PHI args in NEW_PHI for these edges: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
661 new_name = orig_def; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
662 new_name2 = NULL_TREE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
663 if (orig_def_new_name) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
664 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
665 new_name = orig_def_new_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
666 /* Some variables have both loop-entry-phis and loop-exit-phis. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
667 Such variables were given yet newer names by phis placed in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
668 guard_bb by slpeel_update_phi_nodes_for_guard1. I.e: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
669 new_name2 = get_current_def (get_current_def (orig_name)). */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
670 new_name2 = get_current_def (new_name); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
671 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
672 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
673 if (is_new_loop) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
674 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
675 guard_arg = orig_def; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
676 loop_arg = new_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
677 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
678 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
679 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
680 guard_arg = new_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
681 loop_arg = orig_def; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
682 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
683 if (new_name2) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
684 guard_arg = new_name2; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
685 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
686 add_phi_arg (new_phi, loop_arg, new_exit_e, UNKNOWN_LOCATION); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
687 add_phi_arg (new_phi, guard_arg, guard_edge, UNKNOWN_LOCATION); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
688 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
689 /* 1.3. Update phi in successor block. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
690 gcc_assert (PHI_ARG_DEF_FROM_EDGE (update_phi, e) == orig_def); |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
691 adjust_phi_and_debug_stmts (update_phi, e, PHI_RESULT (new_phi)); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
692 update_phi2 = new_phi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
693 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
694 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
695 /** 2. Handle loop-closed-ssa-form phis **/ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
696 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
697 /* 2.1. Generate new phi node in NEW_EXIT_BB: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
698 new_phi = create_phi_node (SSA_NAME_VAR (PHI_RESULT (orig_phi)), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
699 *new_exit_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
700 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
701 /* 2.2. NEW_EXIT_BB has one incoming edge: the exit-edge of the loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
702 add_phi_arg (new_phi, loop_arg, single_exit (loop), UNKNOWN_LOCATION); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
703 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
704 /* 2.3. Update phi in successor of NEW_EXIT_BB: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
705 gcc_assert (PHI_ARG_DEF_FROM_EDGE (update_phi2, new_exit_e) == loop_arg); |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
706 adjust_phi_and_debug_stmts (update_phi2, new_exit_e, |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
707 PHI_RESULT (new_phi)); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
708 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
709 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
710 /** 3. Handle loop-closed-ssa-form phis for first loop **/ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
711 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
712 /* 3.1. Find the relevant names that need an exit-phi in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
713 GUARD_BB, i.e. names for which |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
714 slpeel_update_phi_nodes_for_guard1 had not already created a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
715 phi node. This is the case for names that are used outside |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
716 the loop (and therefore need an exit phi) but are not updated |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
717 across loop iterations (and therefore don't have a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
718 loop-header-phi). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
719 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
720 slpeel_update_phi_nodes_for_guard1 is responsible for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
721 creating loop-exit phis in GUARD_BB for names that have a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
722 loop-header-phi. When such a phi is created we also record |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
723 the new name in its current definition. If this new name |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
724 exists, then guard_arg was set to this new name (see 1.2 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
725 above). Therefore, if guard_arg is not this new name, this |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
726 is an indication that an exit-phi in GUARD_BB was not yet |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
727 created, so we take care of it here. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
728 if (guard_arg == new_name2) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
729 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
730 arg = guard_arg; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
731 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
732 /* 3.2. Generate new phi node in GUARD_BB: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
733 new_phi = create_phi_node (SSA_NAME_VAR (PHI_RESULT (orig_phi)), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
734 guard_edge->src); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
735 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
736 /* 3.3. GUARD_BB has one incoming edge: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
737 gcc_assert (EDGE_COUNT (guard_edge->src->preds) == 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
738 add_phi_arg (new_phi, arg, EDGE_PRED (guard_edge->src, 0), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
739 UNKNOWN_LOCATION); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
740 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
741 /* 3.4. Update phi in successor of GUARD_BB: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
742 gcc_assert (PHI_ARG_DEF_FROM_EDGE (update_phi2, guard_edge) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
743 == guard_arg); |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
744 adjust_phi_and_debug_stmts (update_phi2, guard_edge, |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
745 PHI_RESULT (new_phi)); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
746 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
747 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
748 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
749 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
750 /* Make the LOOP iterate NITERS times. This is done by adding a new IV |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
751 that starts at zero, increases by one and its limit is NITERS. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
752 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
753 Assumption: the exit-condition of LOOP is the last stmt in the loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
754 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
755 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
756 slpeel_make_loop_iterate_ntimes (struct loop *loop, tree niters) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
757 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
758 tree indx_before_incr, indx_after_incr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
759 gimple cond_stmt; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
760 gimple orig_cond; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
761 edge exit_edge = single_exit (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
762 gimple_stmt_iterator loop_cond_gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
763 gimple_stmt_iterator incr_gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
764 bool insert_after; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
765 tree init = build_int_cst (TREE_TYPE (niters), 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
766 tree step = build_int_cst (TREE_TYPE (niters), 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
767 LOC loop_loc; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
768 enum tree_code code; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
769 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
770 orig_cond = get_loop_exit_condition (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
771 gcc_assert (orig_cond); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
772 loop_cond_gsi = gsi_for_stmt (orig_cond); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
773 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
774 standard_iv_increment_position (loop, &incr_gsi, &insert_after); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
775 create_iv (init, step, NULL_TREE, loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
776 &incr_gsi, insert_after, &indx_before_incr, &indx_after_incr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
777 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
778 indx_after_incr = force_gimple_operand_gsi (&loop_cond_gsi, indx_after_incr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
779 true, NULL_TREE, true, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
780 GSI_SAME_STMT); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
781 niters = force_gimple_operand_gsi (&loop_cond_gsi, niters, true, NULL_TREE, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
782 true, GSI_SAME_STMT); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
783 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
784 code = (exit_edge->flags & EDGE_TRUE_VALUE) ? GE_EXPR : LT_EXPR; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
785 cond_stmt = gimple_build_cond (code, indx_after_incr, niters, NULL_TREE, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
786 NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
787 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
788 gsi_insert_before (&loop_cond_gsi, cond_stmt, GSI_SAME_STMT); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
789 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
790 /* Remove old loop exit test: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
791 gsi_remove (&loop_cond_gsi, true); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
792 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
793 loop_loc = find_loop_location (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
794 if (dump_file && (dump_flags & TDF_DETAILS)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
795 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
796 if (loop_loc != UNKNOWN_LOC) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
797 fprintf (dump_file, "\nloop at %s:%d: ", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
798 LOC_FILE (loop_loc), LOC_LINE (loop_loc)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
799 print_gimple_stmt (dump_file, cond_stmt, 0, TDF_SLIM); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
800 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
801 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
802 loop->nb_iterations = niters; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
803 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
804 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
805 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
806 /* Given LOOP this function generates a new copy of it and puts it |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
807 on E which is either the entry or exit of LOOP. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
808 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
809 struct loop * |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
810 slpeel_tree_duplicate_loop_to_edge_cfg (struct loop *loop, edge e) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
811 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
812 struct loop *new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
813 basic_block *new_bbs, *bbs; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
814 bool at_exit; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
815 bool was_imm_dom; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
816 basic_block exit_dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
817 gimple phi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
818 tree phi_arg; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
819 edge exit, new_exit; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
820 gimple_stmt_iterator gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
821 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
822 at_exit = (e == single_exit (loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
823 if (!at_exit && e != loop_preheader_edge (loop)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
824 return NULL; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
825 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
826 bbs = get_loop_body (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
827 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
828 /* Check whether duplication is possible. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
829 if (!can_copy_bbs_p (bbs, loop->num_nodes)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
830 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
831 free (bbs); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
832 return NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
833 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
834 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
835 /* Generate new loop structure. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
836 new_loop = duplicate_loop (loop, loop_outer (loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
837 if (!new_loop) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
838 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
839 free (bbs); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
840 return NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
841 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
842 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
843 exit_dest = single_exit (loop)->dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
844 was_imm_dom = (get_immediate_dominator (CDI_DOMINATORS, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
845 exit_dest) == loop->header ? |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
846 true : false); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
847 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
848 new_bbs = XNEWVEC (basic_block, loop->num_nodes); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
849 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
850 exit = single_exit (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
851 copy_bbs (bbs, loop->num_nodes, new_bbs, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
852 &exit, 1, &new_exit, NULL, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
853 e->src); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
854 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
855 /* Duplicating phi args at exit bbs as coming |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
856 also from exit of duplicated loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
857 for (gsi = gsi_start_phis (exit_dest); !gsi_end_p (gsi); gsi_next (&gsi)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
858 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
859 phi = gsi_stmt (gsi); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
860 phi_arg = PHI_ARG_DEF_FROM_EDGE (phi, single_exit (loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
861 if (phi_arg) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
862 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
863 edge new_loop_exit_edge; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
864 source_location locus; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
865 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
866 locus = gimple_phi_arg_location_from_edge (phi, single_exit (loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
867 if (EDGE_SUCC (new_loop->header, 0)->dest == new_loop->latch) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
868 new_loop_exit_edge = EDGE_SUCC (new_loop->header, 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
869 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
870 new_loop_exit_edge = EDGE_SUCC (new_loop->header, 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
871 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
872 add_phi_arg (phi, phi_arg, new_loop_exit_edge, locus); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
873 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
874 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
875 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
876 if (at_exit) /* Add the loop copy at exit. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
877 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
878 redirect_edge_and_branch_force (e, new_loop->header); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
879 PENDING_STMT (e) = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
880 set_immediate_dominator (CDI_DOMINATORS, new_loop->header, e->src); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
881 if (was_imm_dom) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
882 set_immediate_dominator (CDI_DOMINATORS, exit_dest, new_loop->header); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
883 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
884 else /* Add the copy at entry. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
885 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
886 edge new_exit_e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
887 edge entry_e = loop_preheader_edge (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
888 basic_block preheader = entry_e->src; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
889 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
890 if (!flow_bb_inside_loop_p (new_loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
891 EDGE_SUCC (new_loop->header, 0)->dest)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
892 new_exit_e = EDGE_SUCC (new_loop->header, 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
893 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
894 new_exit_e = EDGE_SUCC (new_loop->header, 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
895 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
896 redirect_edge_and_branch_force (new_exit_e, loop->header); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
897 PENDING_STMT (new_exit_e) = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
898 set_immediate_dominator (CDI_DOMINATORS, loop->header, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
899 new_exit_e->src); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
900 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
901 /* We have to add phi args to the loop->header here as coming |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
902 from new_exit_e edge. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
903 for (gsi = gsi_start_phis (loop->header); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
904 !gsi_end_p (gsi); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
905 gsi_next (&gsi)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
906 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
907 phi = gsi_stmt (gsi); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
908 phi_arg = PHI_ARG_DEF_FROM_EDGE (phi, entry_e); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
909 if (phi_arg) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
910 add_phi_arg (phi, phi_arg, new_exit_e, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
911 gimple_phi_arg_location_from_edge (phi, entry_e)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
912 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
913 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
914 redirect_edge_and_branch_force (entry_e, new_loop->header); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
915 PENDING_STMT (entry_e) = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
916 set_immediate_dominator (CDI_DOMINATORS, new_loop->header, preheader); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
917 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
918 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
919 free (new_bbs); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
920 free (bbs); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
921 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
922 return new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
923 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
924 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
925 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
926 /* Given the condition statement COND, put it as the last statement |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
927 of GUARD_BB; EXIT_BB is the basic block to skip the loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
928 Assumes that this is the single exit of the guarded loop. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
929 Returns the skip edge, inserts new stmts on the COND_EXPR_STMT_LIST. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
930 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
931 static edge |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
932 slpeel_add_loop_guard (basic_block guard_bb, tree cond, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
933 gimple_seq cond_expr_stmt_list, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
934 basic_block exit_bb, basic_block dom_bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
935 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
936 gimple_stmt_iterator gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
937 edge new_e, enter_e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
938 gimple cond_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
939 gimple_seq gimplify_stmt_list = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
940 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
941 enter_e = EDGE_SUCC (guard_bb, 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
942 enter_e->flags &= ~EDGE_FALLTHRU; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
943 enter_e->flags |= EDGE_FALSE_VALUE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
944 gsi = gsi_last_bb (guard_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
945 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
946 cond = force_gimple_operand (cond, &gimplify_stmt_list, true, NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
947 if (gimplify_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
948 gimple_seq_add_seq (&cond_expr_stmt_list, gimplify_stmt_list); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
949 cond_stmt = gimple_build_cond (NE_EXPR, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
950 cond, build_int_cst (TREE_TYPE (cond), 0), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
951 NULL_TREE, NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
952 if (cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
953 gsi_insert_seq_after (&gsi, cond_expr_stmt_list, GSI_NEW_STMT); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
954 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
955 gsi = gsi_last_bb (guard_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
956 gsi_insert_after (&gsi, cond_stmt, GSI_NEW_STMT); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
957 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
958 /* Add new edge to connect guard block to the merge/loop-exit block. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
959 new_e = make_edge (guard_bb, exit_bb, EDGE_TRUE_VALUE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
960 set_immediate_dominator (CDI_DOMINATORS, exit_bb, dom_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
961 return new_e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
962 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
963 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
964 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
965 /* This function verifies that the following restrictions apply to LOOP: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
966 (1) it is innermost |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
967 (2) it consists of exactly 2 basic blocks - header, and an empty latch. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
968 (3) it is single entry, single exit |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
969 (4) its exit condition is the last stmt in the header |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
970 (5) E is the entry/exit edge of LOOP. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
971 */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
972 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
973 bool |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
974 slpeel_can_duplicate_loop_p (const struct loop *loop, const_edge e) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
975 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
976 edge exit_e = single_exit (loop); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
977 edge entry_e = loop_preheader_edge (loop); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
978 gimple orig_cond = get_loop_exit_condition (loop); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
979 gimple_stmt_iterator loop_exit_gsi = gsi_last_bb (exit_e->src); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
980 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
981 if (need_ssa_update_p (cfun)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
982 return false; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
983 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
984 if (loop->inner |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
985 /* All loops have an outer scope; the only case loop->outer is NULL is for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
986 the function itself. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
987 || !loop_outer (loop) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
988 || loop->num_nodes != 2 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
989 || !empty_block_p (loop->latch) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
990 || !single_exit (loop) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
991 /* Verify that new loop exit condition can be trivially modified. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
992 || (!orig_cond || orig_cond != gsi_stmt (loop_exit_gsi)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
993 || (e != exit_e && e != entry_e)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
994 return false; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
995 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
996 return true; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
997 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
998 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
999 #ifdef ENABLE_CHECKING |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1000 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1001 slpeel_verify_cfg_after_peeling (struct loop *first_loop, |
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1002 struct loop *second_loop) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1003 { |
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1004 basic_block loop1_exit_bb = single_exit (first_loop)->dest; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1005 basic_block loop2_entry_bb = loop_preheader_edge (second_loop)->src; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
1006 basic_block loop1_entry_bb = loop_preheader_edge (first_loop)->src; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1007 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1008 /* A guard that controls whether the second_loop is to be executed or skipped |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1009 is placed in first_loop->exit. first_loop->exit therefore has two |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1010 successors - one is the preheader of second_loop, and the other is a bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1011 after second_loop. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1012 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1013 gcc_assert (EDGE_COUNT (loop1_exit_bb->succs) == 2); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1014 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1015 /* 1. Verify that one of the successors of first_loop->exit is the preheader |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1016 of second_loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1017 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1018 /* The preheader of new_loop is expected to have two predecessors: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1019 first_loop->exit and the block that precedes first_loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1020 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1021 gcc_assert (EDGE_COUNT (loop2_entry_bb->preds) == 2 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1022 && ((EDGE_PRED (loop2_entry_bb, 0)->src == loop1_exit_bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1023 && EDGE_PRED (loop2_entry_bb, 1)->src == loop1_entry_bb) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1024 || (EDGE_PRED (loop2_entry_bb, 1)->src == loop1_exit_bb |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1025 && EDGE_PRED (loop2_entry_bb, 0)->src == loop1_entry_bb))); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1026 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1027 /* Verify that the other successor of first_loop->exit is after the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1028 second_loop. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1029 /* TODO */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1030 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1031 #endif |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1032 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1033 /* If the run time cost model check determines that vectorization is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1034 not profitable and hence scalar loop should be generated then set |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1035 FIRST_NITERS to prologue peeled iterations. This will allow all the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1036 iterations to be executed in the prologue peeled scalar loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1037 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1038 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1039 set_prologue_iterations (basic_block bb_before_first_loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1040 tree first_niters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1041 struct loop *loop, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1042 unsigned int th) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1043 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1044 edge e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1045 basic_block cond_bb, then_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1046 tree var, prologue_after_cost_adjust_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1047 gimple_stmt_iterator gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1048 gimple newphi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1049 edge e_true, e_false, e_fallthru; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1050 gimple cond_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1051 gimple_seq gimplify_stmt_list = NULL, stmts = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1052 tree cost_pre_condition = NULL_TREE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1053 tree scalar_loop_iters = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1054 unshare_expr (LOOP_VINFO_NITERS_UNCHANGED (loop_vec_info_for_loop (loop))); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1055 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1056 e = single_pred_edge (bb_before_first_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1057 cond_bb = split_edge(e); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1058 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1059 e = single_pred_edge (bb_before_first_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1060 then_bb = split_edge(e); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1061 set_immediate_dominator (CDI_DOMINATORS, then_bb, cond_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1062 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1063 e_false = make_single_succ_edge (cond_bb, bb_before_first_loop, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1064 EDGE_FALSE_VALUE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1065 set_immediate_dominator (CDI_DOMINATORS, bb_before_first_loop, cond_bb); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1066 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1067 e_true = EDGE_PRED (then_bb, 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1068 e_true->flags &= ~EDGE_FALLTHRU; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1069 e_true->flags |= EDGE_TRUE_VALUE; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1070 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1071 e_fallthru = EDGE_SUCC (then_bb, 0); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1072 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1073 cost_pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1074 fold_build2 (LE_EXPR, boolean_type_node, scalar_loop_iters, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1075 build_int_cst (TREE_TYPE (scalar_loop_iters), th)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1076 cost_pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1077 force_gimple_operand (cost_pre_condition, &gimplify_stmt_list, |
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parents:
diff
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|
1078 true, NULL_TREE); |
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parents:
diff
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|
1079 cond_stmt = gimple_build_cond (NE_EXPR, cost_pre_condition, |
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parents:
diff
changeset
|
1080 build_int_cst (TREE_TYPE (cost_pre_condition), |
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parents:
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|
1081 0), NULL_TREE, NULL_TREE); |
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parents:
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|
1082 |
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parents:
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|
1083 gsi = gsi_last_bb (cond_bb); |
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parents:
diff
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|
1084 if (gimplify_stmt_list) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
1085 gsi_insert_seq_after (&gsi, gimplify_stmt_list, GSI_NEW_STMT); |
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parents:
diff
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|
1086 |
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parents:
diff
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|
1087 gsi = gsi_last_bb (cond_bb); |
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parents:
diff
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|
1088 gsi_insert_after (&gsi, cond_stmt, GSI_NEW_STMT); |
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parents:
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|
1089 |
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parents:
diff
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|
1090 var = create_tmp_var (TREE_TYPE (scalar_loop_iters), |
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parents:
diff
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|
1091 "prologue_after_cost_adjust"); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1092 add_referenced_var (var); |
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parents:
diff
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|
1093 prologue_after_cost_adjust_name = |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
1094 force_gimple_operand (scalar_loop_iters, &stmts, false, var); |
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parents:
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|
1095 |
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parents:
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|
1096 gsi = gsi_last_bb (then_bb); |
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parents:
diff
changeset
|
1097 if (stmts) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
1098 gsi_insert_seq_after (&gsi, stmts, GSI_NEW_STMT); |
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parents:
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|
1099 |
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parents:
diff
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|
1100 newphi = create_phi_node (var, bb_before_first_loop); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
1101 add_phi_arg (newphi, prologue_after_cost_adjust_name, e_fallthru, |
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parents:
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|
1102 UNKNOWN_LOCATION); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1103 add_phi_arg (newphi, first_niters, e_false, UNKNOWN_LOCATION); |
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parents:
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changeset
|
1104 |
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parents:
diff
changeset
|
1105 first_niters = PHI_RESULT (newphi); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
1106 } |
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parents:
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|
1107 |
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parents:
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|
1108 |
67
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parents:
63
diff
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|
1109 /* Remove dead assignments from loop NEW_LOOP. */ |
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diff
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|
1110 |
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|
1111 static void |
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diff
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|
1112 remove_dead_stmts_from_loop (struct loop *new_loop) |
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parents:
63
diff
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|
1113 { |
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parents:
63
diff
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|
1114 basic_block *bbs = get_loop_body (new_loop); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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63
diff
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|
1115 unsigned i; |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1116 for (i = 0; i < new_loop->num_nodes; ++i) |
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parents:
63
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|
1117 { |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1118 gimple_stmt_iterator gsi; |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1119 for (gsi = gsi_start_bb (bbs[i]); !gsi_end_p (gsi);) |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1120 { |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1121 gimple stmt = gsi_stmt (gsi); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1122 if (is_gimple_assign (stmt) |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1123 && TREE_CODE (gimple_assign_lhs (stmt)) == SSA_NAME |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1124 && has_zero_uses (gimple_assign_lhs (stmt))) |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1125 { |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1126 gsi_remove (&gsi, true); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1127 release_defs (stmt); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1128 } |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1129 else |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1130 gsi_next (&gsi); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1131 } |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1132 } |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1133 free (bbs); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1134 } |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
1135 |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1136 |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1137 /* Function slpeel_tree_peel_loop_to_edge. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1138 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1139 Peel the first (last) iterations of LOOP into a new prolog (epilog) loop |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1140 that is placed on the entry (exit) edge E of LOOP. After this transformation |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1141 we have two loops one after the other - first-loop iterates FIRST_NITERS |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1142 times, and second-loop iterates the remainder NITERS - FIRST_NITERS times. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1143 If the cost model indicates that it is profitable to emit a scalar |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1144 loop instead of the vector one, then the prolog (epilog) loop will iterate |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1145 for the entire unchanged scalar iterations of the loop. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1146 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1147 Input: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1148 - LOOP: the loop to be peeled. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1149 - E: the exit or entry edge of LOOP. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1150 If it is the entry edge, we peel the first iterations of LOOP. In this |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1151 case first-loop is LOOP, and second-loop is the newly created loop. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1152 If it is the exit edge, we peel the last iterations of LOOP. In this |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1153 case, first-loop is the newly created loop, and second-loop is LOOP. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1154 - NITERS: the number of iterations that LOOP iterates. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1155 - FIRST_NITERS: the number of iterations that the first-loop should iterate. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1156 - UPDATE_FIRST_LOOP_COUNT: specified whether this function is responsible |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1157 for updating the loop bound of the first-loop to FIRST_NITERS. If it |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1158 is false, the caller of this function may want to take care of this |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1159 (this can be useful if we don't want new stmts added to first-loop). |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1160 - TH: cost model profitability threshold of iterations for vectorization. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1161 - CHECK_PROFITABILITY: specify whether cost model check has not occurred |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1162 during versioning and hence needs to occur during |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1163 prologue generation or whether cost model check |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1164 has not occurred during prologue generation and hence |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1165 needs to occur during epilogue generation. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1166 |
77e2b8dfacca
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parents:
diff
changeset
|
1167 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1168 Output: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1169 The function returns a pointer to the new loop-copy, or NULL if it failed |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1170 to perform the transformation. |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1171 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1172 The function generates two if-then-else guards: one before the first loop, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1173 and the other before the second loop: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1174 The first guard is: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1175 if (FIRST_NITERS == 0) then skip the first loop, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1176 and go directly to the second loop. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1177 The second guard is: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1178 if (FIRST_NITERS == NITERS) then skip the second loop. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1179 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1180 If the optional COND_EXPR and COND_EXPR_STMT_LIST arguments are given |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1181 then the generated condition is combined with COND_EXPR and the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1182 statements in COND_EXPR_STMT_LIST are emitted together with it. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1183 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1184 FORNOW only simple loops are supported (see slpeel_can_duplicate_loop_p). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1185 FORNOW the resulting code will not be in loop-closed-ssa form. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1186 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1187 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1188 static struct loop* |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1189 slpeel_tree_peel_loop_to_edge (struct loop *loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1190 edge e, tree first_niters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1191 tree niters, bool update_first_loop_count, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1192 unsigned int th, bool check_profitability, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1193 tree cond_expr, gimple_seq cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1194 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1195 struct loop *new_loop = NULL, *first_loop, *second_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1196 edge skip_e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1197 tree pre_condition = NULL_TREE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1198 bitmap definitions; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1199 basic_block bb_before_second_loop, bb_after_second_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1200 basic_block bb_before_first_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1201 basic_block bb_between_loops; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1202 basic_block new_exit_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1203 edge exit_e = single_exit (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1204 LOC loop_loc; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1205 tree cost_pre_condition = NULL_TREE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1206 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1207 if (!slpeel_can_duplicate_loop_p (loop, e)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1208 return NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1209 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1210 /* We have to initialize cfg_hooks. Then, when calling |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1211 cfg_hooks->split_edge, the function tree_split_edge |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1212 is actually called and, when calling cfg_hooks->duplicate_block, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1213 the function tree_duplicate_bb is called. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1214 gimple_register_cfg_hooks (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1215 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1216 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1217 /* 1. Generate a copy of LOOP and put it on E (E is the entry/exit of LOOP). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1218 Resulting CFG would be: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1219 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1220 first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1221 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1222 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1223 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1224 second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1225 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1226 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1227 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1228 orig_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1229 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1230 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1231 if (!(new_loop = slpeel_tree_duplicate_loop_to_edge_cfg (loop, e))) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1232 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1233 loop_loc = find_loop_location (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1234 if (dump_file && (dump_flags & TDF_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1235 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1236 if (loop_loc != UNKNOWN_LOC) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1237 fprintf (dump_file, "\n%s:%d: note: ", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1238 LOC_FILE (loop_loc), LOC_LINE (loop_loc)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1239 fprintf (dump_file, "tree_duplicate_loop_to_edge_cfg failed.\n"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1240 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1241 return NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1242 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1243 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1244 if (MAY_HAVE_DEBUG_STMTS) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1245 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1246 gcc_assert (!adjust_vec); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1247 adjust_vec = VEC_alloc (adjust_info, stack, 32); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1248 } |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1249 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1250 if (e == exit_e) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1251 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1252 /* NEW_LOOP was placed after LOOP. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1253 first_loop = loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1254 second_loop = new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1255 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1256 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1257 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1258 /* NEW_LOOP was placed before LOOP. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1259 first_loop = new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1260 second_loop = loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1261 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1262 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1263 definitions = ssa_names_to_replace (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1264 slpeel_update_phis_for_duplicate_loop (loop, new_loop, e == exit_e); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1265 rename_variables_in_loop (new_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1266 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1267 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1268 /* 2. Add the guard code in one of the following ways: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1269 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1270 2.a Add the guard that controls whether the first loop is executed. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1271 This occurs when this function is invoked for prologue or epilogue |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1272 generation and when the cost model check can be done at compile time. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1273 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1274 Resulting CFG would be: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1275 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1276 bb_before_first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1277 if (FIRST_NITERS == 0) GOTO bb_before_second_loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1278 GOTO first-loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1279 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1280 first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1281 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1282 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1283 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1284 bb_before_second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1285 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1286 second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1287 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1288 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1289 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1290 orig_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1291 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1292 2.b Add the cost model check that allows the prologue |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1293 to iterate for the entire unchanged scalar |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1294 iterations of the loop in the event that the cost |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1295 model indicates that the scalar loop is more |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1296 profitable than the vector one. This occurs when |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1297 this function is invoked for prologue generation |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1298 and the cost model check needs to be done at run |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1299 time. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1300 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1301 Resulting CFG after prologue peeling would be: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1302 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1303 if (scalar_loop_iterations <= th) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1304 FIRST_NITERS = scalar_loop_iterations |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1305 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1306 bb_before_first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1307 if (FIRST_NITERS == 0) GOTO bb_before_second_loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1308 GOTO first-loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1309 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1310 first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1311 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1312 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1313 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1314 bb_before_second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1315 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1316 second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1317 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1318 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1319 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1320 orig_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1321 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1322 2.c Add the cost model check that allows the epilogue |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1323 to iterate for the entire unchanged scalar |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1324 iterations of the loop in the event that the cost |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1325 model indicates that the scalar loop is more |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1326 profitable than the vector one. This occurs when |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1327 this function is invoked for epilogue generation |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1328 and the cost model check needs to be done at run |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1329 time. This check is combined with any pre-existing |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1330 check in COND_EXPR to avoid versioning. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1331 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1332 Resulting CFG after prologue peeling would be: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1333 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1334 bb_before_first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1335 if ((scalar_loop_iterations <= th) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1336 || |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1337 FIRST_NITERS == 0) GOTO bb_before_second_loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1338 GOTO first-loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1339 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1340 first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1341 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1342 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1343 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1344 bb_before_second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1345 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1346 second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1347 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1348 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1349 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1350 orig_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1351 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1352 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1353 bb_before_first_loop = split_edge (loop_preheader_edge (first_loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1354 bb_before_second_loop = split_edge (single_exit (first_loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1355 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1356 /* Epilogue peeling. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1357 if (!update_first_loop_count) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1358 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1359 pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1360 fold_build2 (LE_EXPR, boolean_type_node, first_niters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1361 build_int_cst (TREE_TYPE (first_niters), 0)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1362 if (check_profitability) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1363 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1364 tree scalar_loop_iters |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1365 = unshare_expr (LOOP_VINFO_NITERS_UNCHANGED |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1366 (loop_vec_info_for_loop (loop))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1367 cost_pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1368 fold_build2 (LE_EXPR, boolean_type_node, scalar_loop_iters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1369 build_int_cst (TREE_TYPE (scalar_loop_iters), th)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1370 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1371 pre_condition = fold_build2 (TRUTH_OR_EXPR, boolean_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1372 cost_pre_condition, pre_condition); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1373 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1374 if (cond_expr) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1375 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1376 pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1377 fold_build2 (TRUTH_OR_EXPR, boolean_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1378 pre_condition, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1379 fold_build1 (TRUTH_NOT_EXPR, boolean_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1380 cond_expr)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1381 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1382 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1383 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1384 /* Prologue peeling. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1385 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1386 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1387 if (check_profitability) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1388 set_prologue_iterations (bb_before_first_loop, first_niters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1389 loop, th); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1390 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1391 pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1392 fold_build2 (LE_EXPR, boolean_type_node, first_niters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1393 build_int_cst (TREE_TYPE (first_niters), 0)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1394 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1395 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1396 skip_e = slpeel_add_loop_guard (bb_before_first_loop, pre_condition, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1397 cond_expr_stmt_list, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1398 bb_before_second_loop, bb_before_first_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1399 slpeel_update_phi_nodes_for_guard1 (skip_e, first_loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1400 first_loop == new_loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1401 &new_exit_bb, &definitions); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1402 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1403 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1404 /* 3. Add the guard that controls whether the second loop is executed. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1405 Resulting CFG would be: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1406 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1407 bb_before_first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1408 if (FIRST_NITERS == 0) GOTO bb_before_second_loop (skip first loop) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1409 GOTO first-loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1410 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1411 first_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1412 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1413 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1414 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1415 bb_between_loops: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1416 if (FIRST_NITERS == NITERS) GOTO bb_after_second_loop (skip second loop) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1417 GOTO bb_before_second_loop |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1418 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1419 bb_before_second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1420 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1421 second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1422 do { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1423 } while ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1424 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1425 bb_after_second_loop: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1426 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1427 orig_exit_bb: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1428 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1429 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1430 bb_between_loops = new_exit_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1431 bb_after_second_loop = split_edge (single_exit (second_loop)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1432 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1433 pre_condition = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1434 fold_build2 (EQ_EXPR, boolean_type_node, first_niters, niters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1435 skip_e = slpeel_add_loop_guard (bb_between_loops, pre_condition, NULL, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1436 bb_after_second_loop, bb_before_first_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1437 slpeel_update_phi_nodes_for_guard2 (skip_e, second_loop, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1438 second_loop == new_loop, &new_exit_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1439 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1440 /* 4. Make first-loop iterate FIRST_NITERS times, if requested. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1441 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1442 if (update_first_loop_count) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1443 slpeel_make_loop_iterate_ntimes (first_loop, first_niters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1444 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1445 BITMAP_FREE (definitions); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1446 delete_update_ssa (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1447 |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1448 /* Remove all pattern statements from the loop copy. They will confuse |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1449 the expander if DCE is disabled. |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1450 ??? The pattern recognizer should be split into an analysis and |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1451 a transformation phase that is then run only on the loop that is |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1452 going to be transformed. */ |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1453 remove_dead_stmts_from_loop (new_loop); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1454 |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1455 adjust_vec_debug_stmts (); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1456 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1457 return new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1458 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1459 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1460 /* Function vect_get_loop_location. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1461 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1462 Extract the location of the loop in the source code. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1463 If the loop is not well formed for vectorization, an estimated |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1464 location is calculated. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1465 Return the loop location if succeed and NULL if not. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1466 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1467 LOC |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1468 find_loop_location (struct loop *loop) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1469 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1470 gimple stmt = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1471 basic_block bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1472 gimple_stmt_iterator si; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1473 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1474 if (!loop) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1475 return UNKNOWN_LOC; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1476 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1477 stmt = get_loop_exit_condition (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1478 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1479 if (stmt && gimple_location (stmt) != UNKNOWN_LOC) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1480 return gimple_location (stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1481 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1482 /* If we got here the loop is probably not "well formed", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1483 try to estimate the loop location */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1484 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1485 if (!loop->header) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1486 return UNKNOWN_LOC; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1487 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1488 bb = loop->header; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1489 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1490 for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1491 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1492 stmt = gsi_stmt (si); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1493 if (gimple_location (stmt) != UNKNOWN_LOC) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1494 return gimple_location (stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1495 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1496 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1497 return UNKNOWN_LOC; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1498 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1499 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1500 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1501 /* This function builds ni_name = number of iterations loop executes |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1502 on the loop preheader. If SEQ is given the stmt is instead emitted |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1503 there. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1504 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1505 static tree |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1506 vect_build_loop_niters (loop_vec_info loop_vinfo, gimple_seq seq) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1507 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1508 tree ni_name, var; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1509 gimple_seq stmts = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1510 edge pe; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1511 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1512 tree ni = unshare_expr (LOOP_VINFO_NITERS (loop_vinfo)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1513 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1514 var = create_tmp_var (TREE_TYPE (ni), "niters"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1515 add_referenced_var (var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1516 ni_name = force_gimple_operand (ni, &stmts, false, var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1517 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1518 pe = loop_preheader_edge (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1519 if (stmts) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1520 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1521 if (seq) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1522 gimple_seq_add_seq (&seq, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1523 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1524 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1525 basic_block new_bb = gsi_insert_seq_on_edge_immediate (pe, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1526 gcc_assert (!new_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1527 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1528 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1529 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1530 return ni_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1531 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1532 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1533 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1534 /* This function generates the following statements: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1535 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1536 ni_name = number of iterations loop executes |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1537 ratio = ni_name / vf |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1538 ratio_mult_vf_name = ratio * vf |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1539 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1540 and places them at the loop preheader edge or in COND_EXPR_STMT_LIST |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1541 if that is non-NULL. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1542 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1543 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1544 vect_generate_tmps_on_preheader (loop_vec_info loop_vinfo, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1545 tree *ni_name_ptr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1546 tree *ratio_mult_vf_name_ptr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1547 tree *ratio_name_ptr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1548 gimple_seq cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1549 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1550 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1551 edge pe; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1552 basic_block new_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1553 gimple_seq stmts; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1554 tree ni_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1555 tree var; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1556 tree ratio_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1557 tree ratio_mult_vf_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1558 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1559 tree ni = LOOP_VINFO_NITERS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1560 int vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1561 tree log_vf; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1562 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1563 pe = loop_preheader_edge (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1564 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1565 /* Generate temporary variable that contains |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1566 number of iterations loop executes. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1567 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1568 ni_name = vect_build_loop_niters (loop_vinfo, cond_expr_stmt_list); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1569 log_vf = build_int_cst (TREE_TYPE (ni), exact_log2 (vf)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1570 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1571 /* Create: ratio = ni >> log2(vf) */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1572 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1573 ratio_name = fold_build2 (RSHIFT_EXPR, TREE_TYPE (ni_name), ni_name, log_vf); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1574 if (!is_gimple_val (ratio_name)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1575 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1576 var = create_tmp_var (TREE_TYPE (ni), "bnd"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1577 add_referenced_var (var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1578 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1579 stmts = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1580 ratio_name = force_gimple_operand (ratio_name, &stmts, true, var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1581 if (cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1582 gimple_seq_add_seq (&cond_expr_stmt_list, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1583 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1584 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1585 pe = loop_preheader_edge (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1586 new_bb = gsi_insert_seq_on_edge_immediate (pe, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1587 gcc_assert (!new_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1588 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1589 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1590 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1591 /* Create: ratio_mult_vf = ratio << log2 (vf). */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1592 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1593 ratio_mult_vf_name = fold_build2 (LSHIFT_EXPR, TREE_TYPE (ratio_name), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1594 ratio_name, log_vf); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1595 if (!is_gimple_val (ratio_mult_vf_name)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1596 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1597 var = create_tmp_var (TREE_TYPE (ni), "ratio_mult_vf"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1598 add_referenced_var (var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1599 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1600 stmts = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1601 ratio_mult_vf_name = force_gimple_operand (ratio_mult_vf_name, &stmts, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1602 true, var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1603 if (cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1604 gimple_seq_add_seq (&cond_expr_stmt_list, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1605 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1606 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1607 pe = loop_preheader_edge (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1608 new_bb = gsi_insert_seq_on_edge_immediate (pe, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1609 gcc_assert (!new_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1610 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1611 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1612 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1613 *ni_name_ptr = ni_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1614 *ratio_mult_vf_name_ptr = ratio_mult_vf_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1615 *ratio_name_ptr = ratio_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1616 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1617 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1618 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1619 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1620 /* Function vect_can_advance_ivs_p |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1621 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1622 In case the number of iterations that LOOP iterates is unknown at compile |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1623 time, an epilog loop will be generated, and the loop induction variables |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1624 (IVs) will be "advanced" to the value they are supposed to take just before |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1625 the epilog loop. Here we check that the access function of the loop IVs |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1626 and the expression that represents the loop bound are simple enough. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1627 These restrictions will be relaxed in the future. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1628 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1629 bool |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1630 vect_can_advance_ivs_p (loop_vec_info loop_vinfo) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1631 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1632 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1633 basic_block bb = loop->header; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1634 gimple phi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1635 gimple_stmt_iterator gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1636 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1637 /* Analyze phi functions of the loop header. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1638 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1639 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1640 fprintf (vect_dump, "vect_can_advance_ivs_p:"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1641 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1642 for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1643 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1644 tree access_fn = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1645 tree evolution_part; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1646 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1647 phi = gsi_stmt (gsi); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1648 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1649 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1650 fprintf (vect_dump, "Analyze phi: "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1651 print_gimple_stmt (vect_dump, phi, 0, TDF_SLIM); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1652 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1653 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1654 /* Skip virtual phi's. The data dependences that are associated with |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1655 virtual defs/uses (i.e., memory accesses) are analyzed elsewhere. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1656 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1657 if (!is_gimple_reg (SSA_NAME_VAR (PHI_RESULT (phi)))) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1658 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1659 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1660 fprintf (vect_dump, "virtual phi. skip."); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1661 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1662 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1663 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1664 /* Skip reduction phis. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1665 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1666 if (STMT_VINFO_DEF_TYPE (vinfo_for_stmt (phi)) == vect_reduction_def) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1667 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1668 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1669 fprintf (vect_dump, "reduc phi. skip."); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1670 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1671 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1672 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1673 /* Analyze the evolution function. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1674 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1675 access_fn = instantiate_parameters |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1676 (loop, analyze_scalar_evolution (loop, PHI_RESULT (phi))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1677 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1678 if (!access_fn) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1679 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1680 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1681 fprintf (vect_dump, "No Access function."); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1682 return false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1683 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1684 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1685 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1686 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1687 fprintf (vect_dump, "Access function of PHI: "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1688 print_generic_expr (vect_dump, access_fn, TDF_SLIM); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1689 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1690 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1691 evolution_part = evolution_part_in_loop_num (access_fn, loop->num); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1692 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1693 if (evolution_part == NULL_TREE) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1694 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1695 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1696 fprintf (vect_dump, "No evolution."); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1697 return false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1698 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1699 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1700 /* FORNOW: We do not transform initial conditions of IVs |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1701 which evolution functions are a polynomial of degree >= 2. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1702 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1703 if (tree_is_chrec (evolution_part)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1704 return false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1705 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1706 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1707 return true; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1708 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1709 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1710 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1711 /* Function vect_update_ivs_after_vectorizer. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1712 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1713 "Advance" the induction variables of LOOP to the value they should take |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1714 after the execution of LOOP. This is currently necessary because the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1715 vectorizer does not handle induction variables that are used after the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1716 loop. Such a situation occurs when the last iterations of LOOP are |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1717 peeled, because: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1718 1. We introduced new uses after LOOP for IVs that were not originally used |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1719 after LOOP: the IVs of LOOP are now used by an epilog loop. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1720 2. LOOP is going to be vectorized; this means that it will iterate N/VF |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1721 times, whereas the loop IVs should be bumped N times. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1722 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1723 Input: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1724 - LOOP - a loop that is going to be vectorized. The last few iterations |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1725 of LOOP were peeled. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1726 - NITERS - the number of iterations that LOOP executes (before it is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1727 vectorized). i.e, the number of times the ivs should be bumped. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1728 - UPDATE_E - a successor edge of LOOP->exit that is on the (only) path |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1729 coming out from LOOP on which there are uses of the LOOP ivs |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1730 (this is the path from LOOP->exit to epilog_loop->preheader). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1731 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1732 The new definitions of the ivs are placed in LOOP->exit. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1733 The phi args associated with the edge UPDATE_E in the bb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1734 UPDATE_E->dest are updated accordingly. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1735 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1736 Assumption 1: Like the rest of the vectorizer, this function assumes |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1737 a single loop exit that has a single predecessor. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1738 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1739 Assumption 2: The phi nodes in the LOOP header and in update_bb are |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1740 organized in the same order. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1741 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1742 Assumption 3: The access function of the ivs is simple enough (see |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1743 vect_can_advance_ivs_p). This assumption will be relaxed in the future. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1744 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1745 Assumption 4: Exactly one of the successors of LOOP exit-bb is on a path |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1746 coming out of LOOP on which the ivs of LOOP are used (this is the path |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1747 that leads to the epilog loop; other paths skip the epilog loop). This |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1748 path starts with the edge UPDATE_E, and its destination (denoted update_bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1749 needs to have its phis updated. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1750 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1751 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1752 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1753 vect_update_ivs_after_vectorizer (loop_vec_info loop_vinfo, tree niters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1754 edge update_e) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1755 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1756 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1757 basic_block exit_bb = single_exit (loop)->dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1758 gimple phi, phi1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1759 gimple_stmt_iterator gsi, gsi1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1760 basic_block update_bb = update_e->dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1761 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1762 /* gcc_assert (vect_can_advance_ivs_p (loop_vinfo)); */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1763 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1764 /* Make sure there exists a single-predecessor exit bb: */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1765 gcc_assert (single_pred_p (exit_bb)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1766 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1767 for (gsi = gsi_start_phis (loop->header), gsi1 = gsi_start_phis (update_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1768 !gsi_end_p (gsi) && !gsi_end_p (gsi1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1769 gsi_next (&gsi), gsi_next (&gsi1)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1770 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1771 tree access_fn = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1772 tree evolution_part; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1773 tree init_expr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1774 tree step_expr, off; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1775 tree type; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1776 tree var, ni, ni_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1777 gimple_stmt_iterator last_gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1778 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1779 phi = gsi_stmt (gsi); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1780 phi1 = gsi_stmt (gsi1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1781 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1782 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1783 fprintf (vect_dump, "vect_update_ivs_after_vectorizer: phi: "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1784 print_gimple_stmt (vect_dump, phi, 0, TDF_SLIM); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1785 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1786 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1787 /* Skip virtual phi's. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1788 if (!is_gimple_reg (SSA_NAME_VAR (PHI_RESULT (phi)))) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1789 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1790 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1791 fprintf (vect_dump, "virtual phi. skip."); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1792 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1793 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1794 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1795 /* Skip reduction phis. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1796 if (STMT_VINFO_DEF_TYPE (vinfo_for_stmt (phi)) == vect_reduction_def) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1797 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1798 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1799 fprintf (vect_dump, "reduc phi. skip."); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1800 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1801 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1802 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1803 access_fn = analyze_scalar_evolution (loop, PHI_RESULT (phi)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1804 gcc_assert (access_fn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1805 /* We can end up with an access_fn like |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1806 (short int) {(short unsigned int) i_49, +, 1}_1 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1807 for further analysis we need to strip the outer cast but we |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1808 need to preserve the original type. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1809 type = TREE_TYPE (access_fn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1810 STRIP_NOPS (access_fn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1811 evolution_part = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1812 unshare_expr (evolution_part_in_loop_num (access_fn, loop->num)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1813 gcc_assert (evolution_part != NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1814 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1815 /* FORNOW: We do not support IVs whose evolution function is a polynomial |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1816 of degree >= 2 or exponential. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1817 gcc_assert (!tree_is_chrec (evolution_part)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1818 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1819 step_expr = evolution_part; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1820 init_expr = unshare_expr (initial_condition_in_loop_num (access_fn, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1821 loop->num)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1822 init_expr = fold_convert (type, init_expr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1823 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1824 off = fold_build2 (MULT_EXPR, TREE_TYPE (step_expr), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1825 fold_convert (TREE_TYPE (step_expr), niters), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1826 step_expr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1827 if (POINTER_TYPE_P (TREE_TYPE (init_expr))) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1828 ni = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (init_expr), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1829 init_expr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1830 fold_convert (sizetype, off)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1831 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1832 ni = fold_build2 (PLUS_EXPR, TREE_TYPE (init_expr), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1833 init_expr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1834 fold_convert (TREE_TYPE (init_expr), off)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1835 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1836 var = create_tmp_var (TREE_TYPE (init_expr), "tmp"); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1837 add_referenced_var (var); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1838 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1839 last_gsi = gsi_last_bb (exit_bb); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1840 ni_name = force_gimple_operand_gsi (&last_gsi, ni, false, var, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1841 true, GSI_SAME_STMT); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1842 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1843 /* Fix phi expressions in the successor bb. */ |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1844 adjust_phi_and_debug_stmts (phi1, update_e, ni_name); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1845 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1846 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1847 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1848 /* Return the more conservative threshold between the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1849 min_profitable_iters returned by the cost model and the user |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1850 specified threshold, if provided. */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1851 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1852 static unsigned int |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1853 conservative_cost_threshold (loop_vec_info loop_vinfo, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1854 int min_profitable_iters) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1855 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1856 unsigned int th; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1857 int min_scalar_loop_bound; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1858 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1859 min_scalar_loop_bound = ((PARAM_VALUE (PARAM_MIN_VECT_LOOP_BOUND) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1860 * LOOP_VINFO_VECT_FACTOR (loop_vinfo)) - 1); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1861 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1862 /* Use the cost model only if it is more conservative than user specified |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1863 threshold. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1864 th = (unsigned) min_scalar_loop_bound; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1865 if (min_profitable_iters |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1866 && (!min_scalar_loop_bound |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1867 || min_profitable_iters > min_scalar_loop_bound)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1868 th = (unsigned) min_profitable_iters; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1869 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1870 if (th && vect_print_dump_info (REPORT_COST)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1871 fprintf (vect_dump, "Profitability threshold is %u loop iterations.", th); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1872 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1873 return th; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1874 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1875 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1876 /* Function vect_do_peeling_for_loop_bound |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1877 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1878 Peel the last iterations of the loop represented by LOOP_VINFO. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1879 The peeled iterations form a new epilog loop. Given that the loop now |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1880 iterates NITERS times, the new epilog loop iterates |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1881 NITERS % VECTORIZATION_FACTOR times. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1882 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1883 The original loop will later be made to iterate |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1884 NITERS / VECTORIZATION_FACTOR times (this value is placed into RATIO). |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1885 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1886 COND_EXPR and COND_EXPR_STMT_LIST are combined with a new generated |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1887 test. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1888 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1889 void |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1890 vect_do_peeling_for_loop_bound (loop_vec_info loop_vinfo, tree *ratio, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1891 tree cond_expr, gimple_seq cond_expr_stmt_list) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1892 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1893 tree ni_name, ratio_mult_vf_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1894 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1895 struct loop *new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1896 edge update_e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1897 basic_block preheader; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1898 int loop_num; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1899 bool check_profitability = false; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1900 unsigned int th = 0; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1901 int min_profitable_iters; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1902 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1903 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1904 fprintf (vect_dump, "=== vect_do_peeling_for_loop_bound ==="); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1905 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1906 initialize_original_copy_tables (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1907 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1908 /* Generate the following variables on the preheader of original loop: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1909 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1910 ni_name = number of iteration the original loop executes |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1911 ratio = ni_name / vf |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1912 ratio_mult_vf_name = ratio * vf */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1913 vect_generate_tmps_on_preheader (loop_vinfo, &ni_name, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1914 &ratio_mult_vf_name, ratio, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1915 cond_expr_stmt_list); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1916 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1917 loop_num = loop->num; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1918 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1919 /* If cost model check not done during versioning and |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1920 peeling for alignment. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1921 if (!LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT (loop_vinfo) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1922 && !LOOP_REQUIRES_VERSIONING_FOR_ALIAS (loop_vinfo) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1923 && !LOOP_PEELING_FOR_ALIGNMENT (loop_vinfo) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1924 && !cond_expr) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1925 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1926 check_profitability = true; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1927 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1928 /* Get profitability threshold for vectorized loop. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1929 min_profitable_iters = LOOP_VINFO_COST_MODEL_MIN_ITERS (loop_vinfo); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1930 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1931 th = conservative_cost_threshold (loop_vinfo, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1932 min_profitable_iters); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1933 } |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1934 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1935 new_loop = slpeel_tree_peel_loop_to_edge (loop, single_exit (loop), |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1936 ratio_mult_vf_name, ni_name, false, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1937 th, check_profitability, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1938 cond_expr, cond_expr_stmt_list); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1939 gcc_assert (new_loop); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1940 gcc_assert (loop_num == loop->num); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1941 #ifdef ENABLE_CHECKING |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1942 slpeel_verify_cfg_after_peeling (loop, new_loop); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1943 #endif |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1944 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1945 /* A guard that controls whether the new_loop is to be executed or skipped |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1946 is placed in LOOP->exit. LOOP->exit therefore has two successors - one |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1947 is the preheader of NEW_LOOP, where the IVs from LOOP are used. The other |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1948 is a bb after NEW_LOOP, where these IVs are not used. Find the edge that |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1949 is on the path where the LOOP IVs are used and need to be updated. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1950 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1951 preheader = loop_preheader_edge (new_loop)->src; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1952 if (EDGE_PRED (preheader, 0)->src == single_exit (loop)->dest) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1953 update_e = EDGE_PRED (preheader, 0); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1954 else |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1955 update_e = EDGE_PRED (preheader, 1); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1956 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1957 /* Update IVs of original loop as if they were advanced |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1958 by ratio_mult_vf_name steps. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1959 vect_update_ivs_after_vectorizer (loop_vinfo, ratio_mult_vf_name, update_e); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1960 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1961 /* After peeling we have to reset scalar evolution analyzer. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1962 scev_reset (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1963 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1964 free_original_copy_tables (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1965 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1966 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1967 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1968 /* Function vect_gen_niters_for_prolog_loop |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1969 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1970 Set the number of iterations for the loop represented by LOOP_VINFO |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1971 to the minimum between LOOP_NITERS (the original iteration count of the loop) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1972 and the misalignment of DR - the data reference recorded in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1973 LOOP_VINFO_UNALIGNED_DR (LOOP_VINFO). As a result, after the execution of |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1974 this loop, the data reference DR will refer to an aligned location. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1975 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1976 The following computation is generated: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1977 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1978 If the misalignment of DR is known at compile time: |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1979 addr_mis = int mis = DR_MISALIGNMENT (dr); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1980 Else, compute address misalignment in bytes: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1981 addr_mis = addr & (vectype_size - 1) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1982 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1983 prolog_niters = min (LOOP_NITERS, ((VF - addr_mis/elem_size)&(VF-1))/step) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1984 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1985 (elem_size = element type size; an element is the scalar element whose type |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1986 is the inner type of the vectype) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1987 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1988 When the step of the data-ref in the loop is not 1 (as in interleaved data |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1989 and SLP), the number of iterations of the prolog must be divided by the step |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1990 (which is equal to the size of interleaved group). |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1991 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1992 The above formulas assume that VF == number of elements in the vector. This |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1993 may not hold when there are multiple-types in the loop. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1994 In this case, for some data-references in the loop the VF does not represent |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1995 the number of elements that fit in the vector. Therefore, instead of VF we |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1996 use TYPE_VECTOR_SUBPARTS. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1997 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1998 static tree |
63
b7f97abdc517
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1999 vect_gen_niters_for_prolog_loop (loop_vec_info loop_vinfo, tree loop_niters, |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2000 tree *wide_prolog_niters) |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2001 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2002 struct data_reference *dr = LOOP_VINFO_UNALIGNED_DR (loop_vinfo); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2003 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2004 tree var; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2005 gimple_seq stmts; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2006 tree iters, iters_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2007 edge pe; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2008 basic_block new_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2009 gimple dr_stmt = DR_STMT (dr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2010 stmt_vec_info stmt_info = vinfo_for_stmt (dr_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2011 tree vectype = STMT_VINFO_VECTYPE (stmt_info); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2012 int vectype_align = TYPE_ALIGN (vectype) / BITS_PER_UNIT; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2013 tree niters_type = TREE_TYPE (loop_niters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2014 int nelements = TYPE_VECTOR_SUBPARTS (vectype); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2015 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2016 pe = loop_preheader_edge (loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2017 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2018 if (LOOP_PEELING_FOR_ALIGNMENT (loop_vinfo) > 0) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2019 { |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2020 int npeel = LOOP_PEELING_FOR_ALIGNMENT (loop_vinfo); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2021 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2022 if (vect_print_dump_info (REPORT_DETAILS)) |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2023 fprintf (vect_dump, "known peeling = %d.", npeel); |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2024 |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2025 iters = build_int_cst (niters_type, npeel); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2026 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2027 else |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2028 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2029 gimple_seq new_stmts = NULL; |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2030 bool negative = tree_int_cst_compare (DR_STEP (dr), size_zero_node) < 0; |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2031 tree offset = negative |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2032 ? size_int (-TYPE_VECTOR_SUBPARTS (vectype) + 1) : NULL_TREE; |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2033 tree start_addr = vect_create_addr_base_for_vector_ref (dr_stmt, |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2034 &new_stmts, offset, loop); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2035 tree ptr_type = TREE_TYPE (start_addr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2036 tree size = TYPE_SIZE (ptr_type); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2037 tree type = lang_hooks.types.type_for_size (tree_low_cst (size, 1), 1); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2038 tree vectype_size_minus_1 = build_int_cst (type, vectype_align - 1); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2039 tree elem_size_log = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2040 build_int_cst (type, exact_log2 (vectype_align/nelements)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2041 tree nelements_minus_1 = build_int_cst (type, nelements - 1); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2042 tree nelements_tree = build_int_cst (type, nelements); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2043 tree byte_misalign; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2044 tree elem_misalign; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2045 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2046 new_bb = gsi_insert_seq_on_edge_immediate (pe, new_stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2047 gcc_assert (!new_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2048 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2049 /* Create: byte_misalign = addr & (vectype_size - 1) */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2050 byte_misalign = |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2051 fold_build2 (BIT_AND_EXPR, type, fold_convert (type, start_addr), |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2052 vectype_size_minus_1); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2053 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2054 /* Create: elem_misalign = byte_misalign / element_size */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2055 elem_misalign = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2056 fold_build2 (RSHIFT_EXPR, type, byte_misalign, elem_size_log); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2057 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2058 /* Create: (niters_type) (nelements - elem_misalign)&(nelements - 1) */ |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2059 if (negative) |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2060 iters = fold_build2 (MINUS_EXPR, type, elem_misalign, nelements_tree); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2061 else |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2062 iters = fold_build2 (MINUS_EXPR, type, nelements_tree, elem_misalign); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2063 iters = fold_build2 (BIT_AND_EXPR, type, iters, nelements_minus_1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2064 iters = fold_convert (niters_type, iters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2065 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2066 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2067 /* Create: prolog_loop_niters = min (iters, loop_niters) */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2068 /* If the loop bound is known at compile time we already verified that it is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2069 greater than vf; since the misalignment ('iters') is at most vf, there's |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2070 no need to generate the MIN_EXPR in this case. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2071 if (TREE_CODE (loop_niters) != INTEGER_CST) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2072 iters = fold_build2 (MIN_EXPR, niters_type, iters, loop_niters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2073 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2074 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2075 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2076 fprintf (vect_dump, "niters for prolog loop: "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2077 print_generic_expr (vect_dump, iters, TDF_SLIM); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2078 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2079 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2080 var = create_tmp_var (niters_type, "prolog_loop_niters"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2081 add_referenced_var (var); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2082 stmts = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2083 iters_name = force_gimple_operand (iters, &stmts, false, var); |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2084 if (types_compatible_p (sizetype, niters_type)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2085 *wide_prolog_niters = iters_name; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2086 else |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2087 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2088 gimple_seq seq = NULL; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2089 tree wide_iters = fold_convert (sizetype, iters); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2090 var = create_tmp_var (sizetype, "prolog_loop_niters"); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2091 add_referenced_var (var); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2092 *wide_prolog_niters = force_gimple_operand (wide_iters, &seq, false, |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2093 var); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2094 if (seq) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2095 gimple_seq_add_seq (&stmts, seq); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2096 } |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2097 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2098 /* Insert stmt on loop preheader edge. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2099 if (stmts) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2100 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2101 basic_block new_bb = gsi_insert_seq_on_edge_immediate (pe, stmts); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2102 gcc_assert (!new_bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2103 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2104 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2105 return iters_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2106 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2107 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2108 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2109 /* Function vect_update_init_of_dr |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2110 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2111 NITERS iterations were peeled from LOOP. DR represents a data reference |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2112 in LOOP. This function updates the information recorded in DR to |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2113 account for the fact that the first NITERS iterations had already been |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2114 executed. Specifically, it updates the OFFSET field of DR. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2115 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2116 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2117 vect_update_init_of_dr (struct data_reference *dr, tree niters) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2118 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2119 tree offset = DR_OFFSET (dr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2120 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2121 niters = fold_build2 (MULT_EXPR, sizetype, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2122 fold_convert (sizetype, niters), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2123 fold_convert (sizetype, DR_STEP (dr))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2124 offset = fold_build2 (PLUS_EXPR, sizetype, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2125 fold_convert (sizetype, offset), niters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2126 DR_OFFSET (dr) = offset; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2127 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2128 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2129 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2130 /* Function vect_update_inits_of_drs |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2131 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2132 NITERS iterations were peeled from the loop represented by LOOP_VINFO. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2133 This function updates the information recorded for the data references in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2134 the loop to account for the fact that the first NITERS iterations had |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2135 already been executed. Specifically, it updates the initial_condition of |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2136 the access_function of all the data_references in the loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2137 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2138 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2139 vect_update_inits_of_drs (loop_vec_info loop_vinfo, tree niters) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2140 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2141 unsigned int i; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2142 VEC (data_reference_p, heap) *datarefs = LOOP_VINFO_DATAREFS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2143 struct data_reference *dr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2144 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2145 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2146 fprintf (vect_dump, "=== vect_update_inits_of_dr ==="); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2147 |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2148 FOR_EACH_VEC_ELT (data_reference_p, datarefs, i, dr) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2149 vect_update_init_of_dr (dr, niters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2150 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2151 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2152 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2153 /* Function vect_do_peeling_for_alignment |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2154 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2155 Peel the first 'niters' iterations of the loop represented by LOOP_VINFO. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2156 'niters' is set to the misalignment of one of the data references in the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2157 loop, thereby forcing it to refer to an aligned location at the beginning |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2158 of the execution of this loop. The data reference for which we are |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2159 peeling is recorded in LOOP_VINFO_UNALIGNED_DR. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2160 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2161 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2162 vect_do_peeling_for_alignment (loop_vec_info loop_vinfo) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2163 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2164 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2165 tree niters_of_prolog_loop, ni_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2166 tree n_iters; |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2167 tree wide_prolog_niters; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2168 struct loop *new_loop; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2169 unsigned int th = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2170 int min_profitable_iters; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2171 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2172 if (vect_print_dump_info (REPORT_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2173 fprintf (vect_dump, "=== vect_do_peeling_for_alignment ==="); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2174 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2175 initialize_original_copy_tables (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2176 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2177 ni_name = vect_build_loop_niters (loop_vinfo, NULL); |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2178 niters_of_prolog_loop = vect_gen_niters_for_prolog_loop (loop_vinfo, ni_name, |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2179 &wide_prolog_niters); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2180 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2181 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2182 /* Get profitability threshold for vectorized loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2183 min_profitable_iters = LOOP_VINFO_COST_MODEL_MIN_ITERS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2184 th = conservative_cost_threshold (loop_vinfo, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2185 min_profitable_iters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2186 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2187 /* Peel the prolog loop and iterate it niters_of_prolog_loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2188 new_loop = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2189 slpeel_tree_peel_loop_to_edge (loop, loop_preheader_edge (loop), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2190 niters_of_prolog_loop, ni_name, true, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2191 th, true, NULL_TREE, NULL); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2192 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2193 gcc_assert (new_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2194 #ifdef ENABLE_CHECKING |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2195 slpeel_verify_cfg_after_peeling (new_loop, loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2196 #endif |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2197 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2198 /* Update number of times loop executes. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2199 n_iters = LOOP_VINFO_NITERS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2200 LOOP_VINFO_NITERS (loop_vinfo) = fold_build2 (MINUS_EXPR, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2201 TREE_TYPE (n_iters), n_iters, niters_of_prolog_loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2202 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2203 /* Update the init conditions of the access functions of all data refs. */ |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2204 vect_update_inits_of_drs (loop_vinfo, wide_prolog_niters); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2205 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2206 /* After peeling we have to reset scalar evolution analyzer. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2207 scev_reset (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2208 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2209 free_original_copy_tables (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2210 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2211 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2212 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2213 /* Function vect_create_cond_for_align_checks. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2214 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2215 Create a conditional expression that represents the alignment checks for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2216 all of data references (array element references) whose alignment must be |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2217 checked at runtime. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2218 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2219 Input: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2220 COND_EXPR - input conditional expression. New conditions will be chained |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2221 with logical AND operation. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2222 LOOP_VINFO - two fields of the loop information are used. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2223 LOOP_VINFO_PTR_MASK is the mask used to check the alignment. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2224 LOOP_VINFO_MAY_MISALIGN_STMTS contains the refs to be checked. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2225 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2226 Output: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2227 COND_EXPR_STMT_LIST - statements needed to construct the conditional |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2228 expression. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2229 The returned value is the conditional expression to be used in the if |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2230 statement that controls which version of the loop gets executed at runtime. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2231 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2232 The algorithm makes two assumptions: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2233 1) The number of bytes "n" in a vector is a power of 2. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2234 2) An address "a" is aligned if a%n is zero and that this |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2235 test can be done as a&(n-1) == 0. For example, for 16 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2236 byte vectors the test is a&0xf == 0. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2237 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2238 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2239 vect_create_cond_for_align_checks (loop_vec_info loop_vinfo, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2240 tree *cond_expr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2241 gimple_seq *cond_expr_stmt_list) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2242 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2243 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2244 VEC(gimple,heap) *may_misalign_stmts |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2245 = LOOP_VINFO_MAY_MISALIGN_STMTS (loop_vinfo); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2246 gimple ref_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2247 int mask = LOOP_VINFO_PTR_MASK (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2248 tree mask_cst; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2249 unsigned int i; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2250 tree psize; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2251 tree int_ptrsize_type; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2252 char tmp_name[20]; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2253 tree or_tmp_name = NULL_TREE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2254 tree and_tmp, and_tmp_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2255 gimple and_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2256 tree ptrsize_zero; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2257 tree part_cond_expr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2258 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2259 /* Check that mask is one less than a power of 2, i.e., mask is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2260 all zeros followed by all ones. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2261 gcc_assert ((mask != 0) && ((mask & (mask+1)) == 0)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2262 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2263 /* CHECKME: what is the best integer or unsigned type to use to hold a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2264 cast from a pointer value? */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2265 psize = TYPE_SIZE (ptr_type_node); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2266 int_ptrsize_type |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2267 = lang_hooks.types.type_for_size (tree_low_cst (psize, 1), 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2268 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2269 /* Create expression (mask & (dr_1 || ... || dr_n)) where dr_i is the address |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2270 of the first vector of the i'th data reference. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2271 |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2272 FOR_EACH_VEC_ELT (gimple, may_misalign_stmts, i, ref_stmt) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2273 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2274 gimple_seq new_stmt_list = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2275 tree addr_base; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2276 tree addr_tmp, addr_tmp_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2277 tree or_tmp, new_or_tmp_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2278 gimple addr_stmt, or_stmt; |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2279 stmt_vec_info stmt_vinfo = vinfo_for_stmt (ref_stmt); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2280 tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2281 bool negative = tree_int_cst_compare |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2282 (DR_STEP (STMT_VINFO_DATA_REF (stmt_vinfo)), size_zero_node) < 0; |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2283 tree offset = negative |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2284 ? size_int (-TYPE_VECTOR_SUBPARTS (vectype) + 1) : NULL_TREE; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2285 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2286 /* create: addr_tmp = (int)(address_of_first_vector) */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2287 addr_base = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2288 vect_create_addr_base_for_vector_ref (ref_stmt, &new_stmt_list, |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2289 offset, loop); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2290 if (new_stmt_list != NULL) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2291 gimple_seq_add_seq (cond_expr_stmt_list, new_stmt_list); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2292 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2293 sprintf (tmp_name, "%s%d", "addr2int", i); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2294 addr_tmp = create_tmp_var (int_ptrsize_type, tmp_name); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2295 add_referenced_var (addr_tmp); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2296 addr_tmp_name = make_ssa_name (addr_tmp, NULL); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2297 addr_stmt = gimple_build_assign_with_ops (NOP_EXPR, addr_tmp_name, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2298 addr_base, NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2299 SSA_NAME_DEF_STMT (addr_tmp_name) = addr_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2300 gimple_seq_add_stmt (cond_expr_stmt_list, addr_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2301 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2302 /* The addresses are OR together. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2303 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2304 if (or_tmp_name != NULL_TREE) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2305 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2306 /* create: or_tmp = or_tmp | addr_tmp */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2307 sprintf (tmp_name, "%s%d", "orptrs", i); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2308 or_tmp = create_tmp_var (int_ptrsize_type, tmp_name); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2309 add_referenced_var (or_tmp); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2310 new_or_tmp_name = make_ssa_name (or_tmp, NULL); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2311 or_stmt = gimple_build_assign_with_ops (BIT_IOR_EXPR, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2312 new_or_tmp_name, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2313 or_tmp_name, addr_tmp_name); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2314 SSA_NAME_DEF_STMT (new_or_tmp_name) = or_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2315 gimple_seq_add_stmt (cond_expr_stmt_list, or_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2316 or_tmp_name = new_or_tmp_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2317 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2318 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2319 or_tmp_name = addr_tmp_name; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2320 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2321 } /* end for i */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2322 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2323 mask_cst = build_int_cst (int_ptrsize_type, mask); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2324 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2325 /* create: and_tmp = or_tmp & mask */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2326 and_tmp = create_tmp_var (int_ptrsize_type, "andmask" ); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2327 add_referenced_var (and_tmp); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2328 and_tmp_name = make_ssa_name (and_tmp, NULL); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2329 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2330 and_stmt = gimple_build_assign_with_ops (BIT_AND_EXPR, and_tmp_name, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2331 or_tmp_name, mask_cst); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2332 SSA_NAME_DEF_STMT (and_tmp_name) = and_stmt; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2333 gimple_seq_add_stmt (cond_expr_stmt_list, and_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2334 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2335 /* Make and_tmp the left operand of the conditional test against zero. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2336 if and_tmp has a nonzero bit then some address is unaligned. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2337 ptrsize_zero = build_int_cst (int_ptrsize_type, 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2338 part_cond_expr = fold_build2 (EQ_EXPR, boolean_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2339 and_tmp_name, ptrsize_zero); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2340 if (*cond_expr) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2341 *cond_expr = fold_build2 (TRUTH_AND_EXPR, boolean_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2342 *cond_expr, part_cond_expr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2343 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2344 *cond_expr = part_cond_expr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2345 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2346 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2347 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2348 /* Function vect_vfa_segment_size. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2349 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2350 Create an expression that computes the size of segment |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2351 that will be accessed for a data reference. The functions takes into |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2352 account that realignment loads may access one more vector. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2353 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2354 Input: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2355 DR: The data reference. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2356 VECT_FACTOR: vectorization factor. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2357 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2358 Return an expression whose value is the size of segment which will be |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2359 accessed by DR. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2360 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2361 static tree |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2362 vect_vfa_segment_size (struct data_reference *dr, tree vect_factor) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2363 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2364 tree segment_length = fold_build2 (MULT_EXPR, integer_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2365 DR_STEP (dr), vect_factor); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2366 |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2367 if (vect_supportable_dr_alignment (dr, false) |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2368 == dr_explicit_realign_optimized) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2369 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2370 tree vector_size = TYPE_SIZE_UNIT |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2371 (STMT_VINFO_VECTYPE (vinfo_for_stmt (DR_STMT (dr)))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2372 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2373 segment_length = fold_build2 (PLUS_EXPR, integer_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2374 segment_length, vector_size); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2375 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2376 return fold_convert (sizetype, segment_length); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2377 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2378 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2379 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2380 /* Function vect_create_cond_for_alias_checks. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2381 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2382 Create a conditional expression that represents the run-time checks for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2383 overlapping of address ranges represented by a list of data references |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2384 relations passed as input. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2385 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2386 Input: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2387 COND_EXPR - input conditional expression. New conditions will be chained |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2388 with logical AND operation. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2389 LOOP_VINFO - field LOOP_VINFO_MAY_ALIAS_STMTS contains the list of ddrs |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2390 to be checked. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2391 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2392 Output: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2393 COND_EXPR - conditional expression. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2394 COND_EXPR_STMT_LIST - statements needed to construct the conditional |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2395 expression. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2396 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2397 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2398 The returned value is the conditional expression to be used in the if |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2399 statement that controls which version of the loop gets executed at runtime. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2400 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2401 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2402 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2403 vect_create_cond_for_alias_checks (loop_vec_info loop_vinfo, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2404 tree * cond_expr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2405 gimple_seq * cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2406 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2407 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2408 VEC (ddr_p, heap) * may_alias_ddrs = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2409 LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2410 tree vect_factor = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2411 build_int_cst (integer_type_node, LOOP_VINFO_VECT_FACTOR (loop_vinfo)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2412 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2413 ddr_p ddr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2414 unsigned int i; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2415 tree part_cond_expr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2416 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2417 /* Create expression |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2418 ((store_ptr_0 + store_segment_length_0) < load_ptr_0) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2419 || (load_ptr_0 + load_segment_length_0) < store_ptr_0)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2420 && |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2421 ... |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2422 && |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2423 ((store_ptr_n + store_segment_length_n) < load_ptr_n) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2424 || (load_ptr_n + load_segment_length_n) < store_ptr_n)) */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2425 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2426 if (VEC_empty (ddr_p, may_alias_ddrs)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2427 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2428 |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2429 FOR_EACH_VEC_ELT (ddr_p, may_alias_ddrs, i, ddr) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2430 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2431 struct data_reference *dr_a, *dr_b; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2432 gimple dr_group_first_a, dr_group_first_b; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2433 tree addr_base_a, addr_base_b; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2434 tree segment_length_a, segment_length_b; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2435 gimple stmt_a, stmt_b; |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2436 tree seg_a_min, seg_a_max, seg_b_min, seg_b_max; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2437 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2438 dr_a = DDR_A (ddr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2439 stmt_a = DR_STMT (DDR_A (ddr)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2440 dr_group_first_a = DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_a)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2441 if (dr_group_first_a) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2442 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2443 stmt_a = dr_group_first_a; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2444 dr_a = STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt_a)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2445 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2446 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2447 dr_b = DDR_B (ddr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2448 stmt_b = DR_STMT (DDR_B (ddr)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2449 dr_group_first_b = DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_b)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2450 if (dr_group_first_b) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2451 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2452 stmt_b = dr_group_first_b; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2453 dr_b = STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt_b)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2454 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2455 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2456 addr_base_a = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2457 vect_create_addr_base_for_vector_ref (stmt_a, cond_expr_stmt_list, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2458 NULL_TREE, loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2459 addr_base_b = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2460 vect_create_addr_base_for_vector_ref (stmt_b, cond_expr_stmt_list, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2461 NULL_TREE, loop); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2462 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2463 segment_length_a = vect_vfa_segment_size (dr_a, vect_factor); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2464 segment_length_b = vect_vfa_segment_size (dr_b, vect_factor); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2465 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2466 if (vect_print_dump_info (REPORT_DR_DETAILS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2467 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2468 fprintf (vect_dump, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2469 "create runtime check for data references "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2470 print_generic_expr (vect_dump, DR_REF (dr_a), TDF_SLIM); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2471 fprintf (vect_dump, " and "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2472 print_generic_expr (vect_dump, DR_REF (dr_b), TDF_SLIM); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2473 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2474 |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2475 seg_a_min = addr_base_a; |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2476 seg_a_max = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (addr_base_a), |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2477 addr_base_a, segment_length_a); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2478 if (tree_int_cst_compare (DR_STEP (dr_a), size_zero_node) < 0) |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2479 seg_a_min = seg_a_max, seg_a_max = addr_base_a; |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2480 |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2481 seg_b_min = addr_base_b; |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2482 seg_b_max = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (addr_base_b), |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2483 addr_base_b, segment_length_b); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2484 if (tree_int_cst_compare (DR_STEP (dr_b), size_zero_node) < 0) |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2485 seg_b_min = seg_b_max, seg_b_max = addr_base_b; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2486 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2487 part_cond_expr = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2488 fold_build2 (TRUTH_OR_EXPR, boolean_type_node, |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2489 fold_build2 (LT_EXPR, boolean_type_node, seg_a_max, seg_b_min), |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2490 fold_build2 (LT_EXPR, boolean_type_node, seg_b_max, seg_a_min)); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2491 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2492 if (*cond_expr) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2493 *cond_expr = fold_build2 (TRUTH_AND_EXPR, boolean_type_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2494 *cond_expr, part_cond_expr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2495 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2496 *cond_expr = part_cond_expr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2497 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2498 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2499 if (vect_print_dump_info (REPORT_VECTORIZED_LOCATIONS)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2500 fprintf (vect_dump, "created %u versioning for alias checks.\n", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2501 VEC_length (ddr_p, may_alias_ddrs)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2502 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2503 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2504 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2505 /* Function vect_loop_versioning. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2506 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2507 If the loop has data references that may or may not be aligned or/and |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2508 has data reference relations whose independence was not proven then |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2509 two versions of the loop need to be generated, one which is vectorized |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2510 and one which isn't. A test is then generated to control which of the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2511 loops is executed. The test checks for the alignment of all of the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2512 data references that may or may not be aligned. An additional |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2513 sequence of runtime tests is generated for each pairs of DDRs whose |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2514 independence was not proven. The vectorized version of loop is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2515 executed only if both alias and alignment tests are passed. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2516 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2517 The test generated to check which version of loop is executed |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2518 is modified to also check for profitability as indicated by the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2519 cost model initially. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2520 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2521 The versioning precondition(s) are placed in *COND_EXPR and |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2522 *COND_EXPR_STMT_LIST. If DO_VERSIONING is true versioning is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2523 also performed, otherwise only the conditions are generated. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2524 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2525 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2526 vect_loop_versioning (loop_vec_info loop_vinfo, bool do_versioning, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2527 tree *cond_expr, gimple_seq *cond_expr_stmt_list) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2528 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2529 struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2530 basic_block condition_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2531 gimple_stmt_iterator gsi, cond_exp_gsi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2532 basic_block merge_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2533 basic_block new_exit_bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2534 edge new_exit_e, e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2535 gimple orig_phi, new_phi; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2536 tree arg; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2537 unsigned prob = 4 * REG_BR_PROB_BASE / 5; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2538 gimple_seq gimplify_stmt_list = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2539 tree scalar_loop_iters = LOOP_VINFO_NITERS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2540 int min_profitable_iters = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2541 unsigned int th; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2542 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2543 /* Get profitability threshold for vectorized loop. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2544 min_profitable_iters = LOOP_VINFO_COST_MODEL_MIN_ITERS (loop_vinfo); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2545 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2546 th = conservative_cost_threshold (loop_vinfo, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2547 min_profitable_iters); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2548 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2549 *cond_expr = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2550 fold_build2 (GT_EXPR, boolean_type_node, scalar_loop_iters, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2551 build_int_cst (TREE_TYPE (scalar_loop_iters), th)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2552 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2553 *cond_expr = force_gimple_operand (*cond_expr, cond_expr_stmt_list, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2554 false, NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2555 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2556 if (LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT (loop_vinfo)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2557 vect_create_cond_for_align_checks (loop_vinfo, cond_expr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2558 cond_expr_stmt_list); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2559 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2560 if (LOOP_REQUIRES_VERSIONING_FOR_ALIAS (loop_vinfo)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2561 vect_create_cond_for_alias_checks (loop_vinfo, cond_expr, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2562 cond_expr_stmt_list); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2563 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2564 *cond_expr = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2565 fold_build2 (NE_EXPR, boolean_type_node, *cond_expr, integer_zero_node); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2566 *cond_expr = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2567 force_gimple_operand (*cond_expr, &gimplify_stmt_list, true, NULL_TREE); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2568 gimple_seq_add_seq (cond_expr_stmt_list, gimplify_stmt_list); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2569 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2570 /* If we only needed the extra conditions and a new loop copy |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
2571 bail out here. */ |
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parents:
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|
2572 if (!do_versioning) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
2573 return; |
77e2b8dfacca
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parents:
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|
2574 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
2575 initialize_original_copy_tables (); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
2576 loop_version (loop, *cond_expr, &condition_bb, |
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parents:
diff
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|
2577 prob, prob, REG_BR_PROB_BASE - prob, true); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2578 free_original_copy_tables(); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2579 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2580 /* Loop versioning violates an assumption we try to maintain during |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2581 vectorization - that the loop exit block has a single predecessor. |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2582 After versioning, the exit block of both loop versions is the same |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2583 basic block (i.e. it has two predecessors). Just in order to simplify |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2584 following transformations in the vectorizer, we fix this situation |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2585 here by adding a new (empty) block on the exit-edge of the loop, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2586 with the proper loop-exit phis to maintain loop-closed-form. */ |
77e2b8dfacca
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parents:
diff
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|
2587 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2588 merge_bb = single_exit (loop)->dest; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2589 gcc_assert (EDGE_COUNT (merge_bb->preds) == 2); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
2590 new_exit_bb = split_edge (single_exit (loop)); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
2591 new_exit_e = single_exit (loop); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
2592 e = EDGE_SUCC (new_exit_bb, 0); |
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parents:
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changeset
|
2593 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
2594 for (gsi = gsi_start_phis (merge_bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
2595 { |
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parents:
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|
2596 orig_phi = gsi_stmt (gsi); |
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parents:
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|
2597 new_phi = create_phi_node (SSA_NAME_VAR (PHI_RESULT (orig_phi)), |
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parents:
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|
2598 new_exit_bb); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
2599 arg = PHI_ARG_DEF_FROM_EDGE (orig_phi, e); |
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parents:
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|
2600 add_phi_arg (new_phi, arg, new_exit_e, |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2601 gimple_phi_arg_location_from_edge (orig_phi, e)); |
63
b7f97abdc517
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2602 adjust_phi_and_debug_stmts (orig_phi, e, PHI_RESULT (new_phi)); |
55
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parents:
diff
changeset
|
2603 } |
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parents:
diff
changeset
|
2604 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2605 /* End loop-exit-fixes after versioning. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2606 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2607 update_ssa (TODO_update_ssa); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2608 if (*cond_expr_stmt_list) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2609 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2610 cond_exp_gsi = gsi_last_bb (condition_bb); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2611 gsi_insert_seq_before (&cond_exp_gsi, *cond_expr_stmt_list, |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2612 GSI_SAME_STMT); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2613 *cond_expr_stmt_list = NULL; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2614 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2615 *cond_expr = NULL_TREE; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2616 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2617 |