Mercurial > hg > CbC > CbC_gcc
annotate gcc/sese.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 /* Single entry single exit control flow regions. |
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2 Copyright (C) 2008, 2009, 2010 |
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3 Free Software Foundation, Inc. |
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4 Contributed by Jan Sjodin <jan.sjodin@amd.com> and |
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5 Sebastian Pop <sebastian.pop@amd.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 |
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10 it under the terms of the GNU General Public License as published by |
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11 the Free Software Foundation; either version 3, or (at your option) |
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12 any later version. |
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13 |
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14 GCC is distributed in the hope that it will be useful, |
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 GNU General Public License 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 "tree-pretty-print.h" |
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27 #include "tree-flow.h" |
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28 #include "cfgloop.h" |
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29 #include "tree-chrec.h" |
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30 #include "tree-data-ref.h" |
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31 #include "tree-scalar-evolution.h" |
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32 #include "tree-pass.h" |
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33 #include "value-prof.h" |
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34 #include "sese.h" |
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35 |
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36 /* Print to stderr the element ELT. */ |
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37 |
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38 static void |
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39 debug_rename_elt (rename_map_elt elt) |
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40 { |
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41 fprintf (stderr, "("); |
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42 print_generic_expr (stderr, elt->old_name, 0); |
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43 fprintf (stderr, ", "); |
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44 print_generic_expr (stderr, elt->expr, 0); |
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45 fprintf (stderr, ")\n"); |
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46 } |
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47 |
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48 /* Helper function for debug_rename_map. */ |
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49 |
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50 static int |
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51 debug_rename_map_1 (void **slot, void *s ATTRIBUTE_UNUSED) |
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52 { |
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53 struct rename_map_elt_s *entry = (struct rename_map_elt_s *) *slot; |
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54 debug_rename_elt (entry); |
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55 return 1; |
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56 } |
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57 |
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58 /* Print to stderr all the elements of RENAME_MAP. */ |
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59 |
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60 DEBUG_FUNCTION void |
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61 debug_rename_map (htab_t rename_map) |
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62 { |
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63 htab_traverse (rename_map, debug_rename_map_1, NULL); |
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64 } |
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65 |
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66 /* Computes a hash function for database element ELT. */ |
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67 |
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68 hashval_t |
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69 rename_map_elt_info (const void *elt) |
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70 { |
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71 return SSA_NAME_VERSION (((const struct rename_map_elt_s *) elt)->old_name); |
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72 } |
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73 |
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74 /* Compares database elements E1 and E2. */ |
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75 |
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76 int |
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77 eq_rename_map_elts (const void *e1, const void *e2) |
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78 { |
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79 const struct rename_map_elt_s *elt1 = (const struct rename_map_elt_s *) e1; |
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80 const struct rename_map_elt_s *elt2 = (const struct rename_map_elt_s *) e2; |
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81 |
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82 return (elt1->old_name == elt2->old_name); |
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83 } |
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84 |
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85 |
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86 |
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87 /* Print to stderr the element ELT. */ |
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88 |
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89 static void |
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90 debug_ivtype_elt (ivtype_map_elt elt) |
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91 { |
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92 fprintf (stderr, "(%s, ", elt->cloog_iv); |
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93 print_generic_expr (stderr, elt->type, 0); |
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94 fprintf (stderr, ")\n"); |
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95 } |
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96 |
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97 /* Helper function for debug_ivtype_map. */ |
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98 |
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99 static int |
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100 debug_ivtype_map_1 (void **slot, void *s ATTRIBUTE_UNUSED) |
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101 { |
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102 struct ivtype_map_elt_s *entry = (struct ivtype_map_elt_s *) *slot; |
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103 debug_ivtype_elt (entry); |
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104 return 1; |
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105 } |
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106 |
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107 /* Print to stderr all the elements of MAP. */ |
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108 |
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109 DEBUG_FUNCTION void |
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110 debug_ivtype_map (htab_t map) |
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111 { |
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112 htab_traverse (map, debug_ivtype_map_1, NULL); |
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113 } |
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114 |
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115 /* Computes a hash function for database element ELT. */ |
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116 |
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117 hashval_t |
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118 ivtype_map_elt_info (const void *elt) |
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119 { |
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120 return htab_hash_pointer (((const struct ivtype_map_elt_s *) elt)->cloog_iv); |
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121 } |
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122 |
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123 /* Compares database elements E1 and E2. */ |
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124 |
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125 int |
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126 eq_ivtype_map_elts (const void *e1, const void *e2) |
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127 { |
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128 const struct ivtype_map_elt_s *elt1 = (const struct ivtype_map_elt_s *) e1; |
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129 const struct ivtype_map_elt_s *elt2 = (const struct ivtype_map_elt_s *) e2; |
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130 |
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131 return (elt1->cloog_iv == elt2->cloog_iv); |
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132 } |
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133 |
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134 |
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135 |
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136 /* Record LOOP as occuring in REGION. */ |
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137 |
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138 static void |
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139 sese_record_loop (sese region, loop_p loop) |
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140 { |
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141 if (sese_contains_loop (region, loop)) |
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142 return; |
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143 |
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144 bitmap_set_bit (SESE_LOOPS (region), loop->num); |
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145 VEC_safe_push (loop_p, heap, SESE_LOOP_NEST (region), loop); |
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146 } |
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147 |
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148 /* Build the loop nests contained in REGION. Returns true when the |
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149 operation was successful. */ |
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150 |
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151 void |
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152 build_sese_loop_nests (sese region) |
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153 { |
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154 unsigned i; |
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155 basic_block bb; |
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156 struct loop *loop0, *loop1; |
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157 |
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158 FOR_EACH_BB (bb) |
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159 if (bb_in_sese_p (bb, region)) |
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160 { |
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161 struct loop *loop = bb->loop_father; |
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162 |
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163 /* Only add loops if they are completely contained in the SCoP. */ |
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164 if (loop->header == bb |
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165 && bb_in_sese_p (loop->latch, region)) |
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166 sese_record_loop (region, loop); |
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167 } |
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168 |
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169 /* Make sure that the loops in the SESE_LOOP_NEST are ordered. It |
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170 can be the case that an inner loop is inserted before an outer |
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171 loop. To avoid this, semi-sort once. */ |
67
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172 FOR_EACH_VEC_ELT (loop_p, SESE_LOOP_NEST (region), i, loop0) |
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173 { |
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174 if (VEC_length (loop_p, SESE_LOOP_NEST (region)) == i + 1) |
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175 break; |
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176 |
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177 loop1 = VEC_index (loop_p, SESE_LOOP_NEST (region), i + 1); |
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178 if (loop0->num > loop1->num) |
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179 { |
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180 VEC_replace (loop_p, SESE_LOOP_NEST (region), i, loop1); |
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181 VEC_replace (loop_p, SESE_LOOP_NEST (region), i + 1, loop0); |
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182 } |
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183 } |
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184 } |
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185 |
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186 /* For a USE in BB, if BB is outside REGION, mark the USE in the |
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187 LIVEOUTS set. */ |
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188 |
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189 static void |
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190 sese_build_liveouts_use (sese region, bitmap liveouts, basic_block bb, |
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191 tree use) |
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192 { |
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193 unsigned ver; |
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194 basic_block def_bb; |
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195 |
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196 if (TREE_CODE (use) != SSA_NAME) |
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197 return; |
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198 |
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199 ver = SSA_NAME_VERSION (use); |
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200 def_bb = gimple_bb (SSA_NAME_DEF_STMT (use)); |
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201 |
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202 if (!def_bb |
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203 || !bb_in_sese_p (def_bb, region) |
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204 || bb_in_sese_p (bb, region)) |
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205 return; |
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206 |
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207 bitmap_set_bit (liveouts, ver); |
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208 } |
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209 |
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210 /* Marks for rewrite all the SSA_NAMES defined in REGION and that are |
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211 used in BB that is outside of the REGION. */ |
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212 |
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213 static void |
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214 sese_build_liveouts_bb (sese region, bitmap liveouts, basic_block bb) |
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215 { |
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216 gimple_stmt_iterator bsi; |
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217 edge e; |
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218 edge_iterator ei; |
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219 ssa_op_iter iter; |
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220 use_operand_p use_p; |
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221 |
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222 FOR_EACH_EDGE (e, ei, bb->succs) |
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223 for (bsi = gsi_start_phis (e->dest); !gsi_end_p (bsi); gsi_next (&bsi)) |
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224 sese_build_liveouts_use (region, liveouts, bb, |
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225 PHI_ARG_DEF_FROM_EDGE (gsi_stmt (bsi), e)); |
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226 |
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227 for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) |
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228 { |
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229 gimple stmt = gsi_stmt (bsi); |
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230 |
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231 if (is_gimple_debug (stmt)) |
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232 continue; |
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233 |
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234 FOR_EACH_SSA_USE_OPERAND (use_p, stmt, iter, SSA_OP_ALL_USES) |
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235 sese_build_liveouts_use (region, liveouts, bb, USE_FROM_PTR (use_p)); |
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236 } |
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237 } |
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238 |
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239 /* For a USE in BB, return true if BB is outside REGION and it's not |
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240 in the LIVEOUTS set. */ |
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241 |
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242 static bool |
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243 sese_bad_liveouts_use (sese region, bitmap liveouts, basic_block bb, |
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244 tree use) |
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245 { |
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246 unsigned ver; |
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247 basic_block def_bb; |
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248 |
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249 if (TREE_CODE (use) != SSA_NAME) |
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250 return false; |
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251 |
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252 ver = SSA_NAME_VERSION (use); |
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253 |
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254 /* If it's in liveouts, the variable will get a new PHI node, and |
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255 the debug use will be properly adjusted. */ |
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256 if (bitmap_bit_p (liveouts, ver)) |
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257 return false; |
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258 |
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259 def_bb = gimple_bb (SSA_NAME_DEF_STMT (use)); |
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260 |
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261 if (!def_bb |
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262 || !bb_in_sese_p (def_bb, region) |
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263 || bb_in_sese_p (bb, region)) |
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264 return false; |
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265 |
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266 return true; |
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267 } |
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268 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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269 /* Reset debug stmts that reference SSA_NAMES defined in REGION that |
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270 are not marked as liveouts. */ |
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271 |
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272 static void |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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273 sese_reset_debug_liveouts_bb (sese region, bitmap liveouts, basic_block bb) |
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274 { |
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275 gimple_stmt_iterator bsi; |
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276 ssa_op_iter iter; |
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277 use_operand_p use_p; |
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278 |
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279 for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) |
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|
280 { |
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281 gimple stmt = gsi_stmt (bsi); |
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|
282 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
283 if (!is_gimple_debug (stmt)) |
77e2b8dfacca
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parents:
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|
284 continue; |
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285 |
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286 FOR_EACH_SSA_USE_OPERAND (use_p, stmt, iter, SSA_OP_ALL_USES) |
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parents:
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|
287 if (sese_bad_liveouts_use (region, liveouts, bb, |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
288 USE_FROM_PTR (use_p))) |
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|
289 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
290 gimple_debug_bind_reset_value (stmt); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
291 update_stmt (stmt); |
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parents:
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|
292 break; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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changeset
|
293 } |
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parents:
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|
294 } |
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parents:
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|
295 } |
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parents:
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|
296 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
297 /* Build the LIVEOUTS of REGION: the set of variables defined inside |
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parents:
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|
298 and used outside the REGION. */ |
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|
299 |
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parents:
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|
300 static void |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
301 sese_build_liveouts (sese region, bitmap liveouts) |
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|
302 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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|
303 basic_block bb; |
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|
304 |
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|
305 FOR_EACH_BB (bb) |
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|
306 sese_build_liveouts_bb (region, liveouts, bb); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
307 if (MAY_HAVE_DEBUG_INSNS) |
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parents:
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|
308 FOR_EACH_BB (bb) |
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parents:
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|
309 sese_reset_debug_liveouts_bb (region, liveouts, bb); |
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parents:
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changeset
|
310 } |
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parents:
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|
311 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
312 /* Builds a new SESE region from edges ENTRY and EXIT. */ |
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parents:
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|
313 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
314 sese |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
315 new_sese (edge entry, edge exit) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
316 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
317 sese region = XNEW (struct sese_s); |
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parents:
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|
318 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
319 SESE_ENTRY (region) = entry; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
320 SESE_EXIT (region) = exit; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
321 SESE_LOOPS (region) = BITMAP_ALLOC (NULL); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
322 SESE_LOOP_NEST (region) = VEC_alloc (loop_p, heap, 3); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
323 SESE_ADD_PARAMS (region) = true; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
324 SESE_PARAMS (region) = VEC_alloc (tree, heap, 3); |
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parents:
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changeset
|
325 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
326 return region; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
327 } |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
328 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
329 /* Deletes REGION. */ |
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parents:
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|
330 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
331 void |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
332 free_sese (sese region) |
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parents:
diff
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|
333 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
334 if (SESE_LOOPS (region)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
335 SESE_LOOPS (region) = BITMAP_ALLOC (NULL); |
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parents:
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|
336 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
337 VEC_free (tree, heap, SESE_PARAMS (region)); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
338 VEC_free (loop_p, heap, SESE_LOOP_NEST (region)); |
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parents:
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|
339 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
340 XDELETE (region); |
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parents:
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|
341 } |
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parents:
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342 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
343 /* Add exit phis for USE on EXIT. */ |
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parents:
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|
344 |
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parents:
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345 static void |
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parents:
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|
346 sese_add_exit_phis_edge (basic_block exit, tree use, edge false_e, edge true_e) |
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parents:
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347 { |
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348 gimple phi = create_phi_node (use, exit); |
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parents:
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349 |
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parents:
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350 create_new_def_for (gimple_phi_result (phi), phi, |
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parents:
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351 gimple_phi_result_ptr (phi)); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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352 add_phi_arg (phi, use, false_e, UNKNOWN_LOCATION); |
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parents:
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353 add_phi_arg (phi, use, true_e, UNKNOWN_LOCATION); |
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parents:
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354 } |
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parents:
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355 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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356 /* Insert in the block BB phi nodes for variables defined in REGION |
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parents:
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357 and used outside the REGION. The code generation moves REGION in |
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parents:
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358 the else clause of an "if (1)" and generates code in the then |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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359 clause that is at this point empty: |
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parents:
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360 |
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parents:
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361 | if (1) |
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parents:
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362 | empty; |
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parents:
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363 | else |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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364 | REGION; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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365 */ |
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parents:
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366 |
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parents:
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|
367 void |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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368 sese_insert_phis_for_liveouts (sese region, basic_block bb, |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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369 edge false_e, edge true_e) |
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parents:
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|
370 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
371 unsigned i; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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372 bitmap_iterator bi; |
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parents:
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373 bitmap liveouts = BITMAP_ALLOC (NULL); |
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parents:
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|
374 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
375 update_ssa (TODO_update_ssa); |
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parents:
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|
376 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
377 sese_build_liveouts (region, liveouts); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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378 EXECUTE_IF_SET_IN_BITMAP (liveouts, 0, i, bi) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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379 sese_add_exit_phis_edge (bb, ssa_name (i), false_e, true_e); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
380 BITMAP_FREE (liveouts); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
381 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
382 update_ssa (TODO_update_ssa); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
383 } |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
384 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
385 /* Returns the first successor edge of BB with EDGE_TRUE_VALUE flag set. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
386 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
387 edge |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 get_true_edge_from_guard_bb (basic_block bb) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
389 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
390 edge e; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
391 edge_iterator ei; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
392 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
393 FOR_EACH_EDGE (e, ei, bb->succs) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
394 if (e->flags & EDGE_TRUE_VALUE) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
395 return e; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
396 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397 gcc_unreachable (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 return NULL; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 /* Returns the first successor edge of BB with EDGE_TRUE_VALUE flag cleared. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 edge |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 get_false_edge_from_guard_bb (basic_block bb) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406 edge e; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 edge_iterator ei; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 FOR_EACH_EDGE (e, ei, bb->succs) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 if (!(e->flags & EDGE_TRUE_VALUE)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 return e; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 gcc_unreachable (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 return NULL; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
417 /* Returns the expression associated to OLD_NAME in RENAME_MAP. */ |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
419 static tree |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
420 get_rename (htab_t rename_map, tree old_name) |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 { |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
422 struct rename_map_elt_s tmp; |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
423 PTR *slot; |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
424 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
425 gcc_assert (TREE_CODE (old_name) == SSA_NAME); |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
426 tmp.old_name = old_name; |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
427 slot = htab_find_slot (rename_map, &tmp, NO_INSERT); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
429 if (slot && *slot) |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
430 return ((rename_map_elt) *slot)->expr; |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
432 return NULL_TREE; |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
435 /* Register in RENAME_MAP the rename tuple (OLD_NAME, EXPR). */ |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436 |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
437 static void |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
438 set_rename (htab_t rename_map, tree old_name, tree expr) |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
439 { |
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
440 struct rename_map_elt_s tmp; |
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
441 PTR *slot; |
55
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442 |
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443 if (old_name == expr) |
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444 return; |
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445 |
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446 tmp.old_name = old_name; |
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447 slot = htab_find_slot (rename_map, &tmp, INSERT); |
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448 |
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449 if (!slot) |
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450 return; |
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451 |
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452 if (*slot) |
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453 free (*slot); |
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454 |
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455 *slot = new_rename_map_elt (old_name, expr); |
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456 } |
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457 |
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458 /* Renames the scalar uses of the statement COPY, using the |
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459 substitution map RENAME_MAP, inserting the gimplification code at |
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460 GSI_TGT, for the translation REGION, with the original copied |
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461 statement in LOOP, and using the induction variable renaming map |
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462 IV_MAP. Returns true when something has been renamed. */ |
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463 |
67
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464 static bool |
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465 rename_uses (gimple copy, htab_t rename_map, gimple_stmt_iterator *gsi_tgt, |
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466 sese region, loop_p loop, VEC (tree, heap) *iv_map) |
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467 { |
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468 use_operand_p use_p; |
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469 ssa_op_iter op_iter; |
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470 bool changed = false; |
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471 |
67
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472 if (is_gimple_debug (copy)) |
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473 { |
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474 if (gimple_debug_bind_p (copy)) |
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475 gimple_debug_bind_reset_value (copy); |
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476 else |
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477 gcc_unreachable (); |
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478 |
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479 return false; |
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480 } |
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481 |
67
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482 FOR_EACH_SSA_USE_OPERAND (use_p, copy, op_iter, SSA_OP_ALL_USES) |
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483 { |
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484 tree old_name = USE_FROM_PTR (use_p); |
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485 tree new_expr, scev; |
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486 gimple_seq stmts; |
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487 |
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488 if (TREE_CODE (old_name) != SSA_NAME |
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489 || !is_gimple_reg (old_name) |
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490 || SSA_NAME_IS_DEFAULT_DEF (old_name)) |
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491 continue; |
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492 |
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493 changed = true; |
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494 new_expr = get_rename (rename_map, old_name); |
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495 if (new_expr) |
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496 { |
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497 tree type_old_name = TREE_TYPE (old_name); |
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498 tree type_new_expr = TREE_TYPE (new_expr); |
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499 |
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500 if (type_old_name != type_new_expr |
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501 || (TREE_CODE (new_expr) != SSA_NAME |
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502 && is_gimple_reg (old_name))) |
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503 { |
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504 tree var = create_tmp_var (type_old_name, "var"); |
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505 |
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506 if (type_old_name != type_new_expr) |
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507 new_expr = fold_convert (type_old_name, new_expr); |
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508 |
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509 new_expr = build2 (MODIFY_EXPR, type_old_name, var, new_expr); |
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510 new_expr = force_gimple_operand (new_expr, &stmts, true, NULL); |
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511 gsi_insert_seq_before (gsi_tgt, stmts, GSI_SAME_STMT); |
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512 } |
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513 |
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514 replace_exp (use_p, new_expr); |
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515 continue; |
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516 } |
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517 |
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518 scev = scalar_evolution_in_region (region, loop, old_name); |
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519 |
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520 /* At this point we should know the exact scev for each |
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521 scalar SSA_NAME used in the scop: all the other scalar |
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522 SSA_NAMEs should have been translated out of SSA using |
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523 arrays with one element. */ |
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524 gcc_assert (!chrec_contains_undetermined (scev)); |
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525 |
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526 new_expr = chrec_apply_map (scev, iv_map); |
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527 |
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528 /* The apply should produce an expression tree containing |
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529 the uses of the new induction variables. We should be |
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530 able to use new_expr instead of the old_name in the newly |
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531 generated loop nest. */ |
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532 gcc_assert (!chrec_contains_undetermined (new_expr) |
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533 && !tree_contains_chrecs (new_expr, NULL)); |
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534 |
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535 /* Replace the old_name with the new_expr. */ |
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536 new_expr = force_gimple_operand (unshare_expr (new_expr), &stmts, |
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537 true, NULL_TREE); |
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538 gsi_insert_seq_before (gsi_tgt, stmts, GSI_SAME_STMT); |
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539 replace_exp (use_p, new_expr); |
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540 |
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541 if (TREE_CODE (new_expr) == INTEGER_CST |
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542 && is_gimple_assign (copy)) |
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543 { |
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544 tree rhs = gimple_assign_rhs1 (copy); |
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545 |
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546 if (TREE_CODE (rhs) == ADDR_EXPR) |
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547 recompute_tree_invariant_for_addr_expr (rhs); |
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548 } |
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549 |
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550 set_rename (rename_map, old_name, new_expr); |
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551 } |
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552 |
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553 return changed; |
55
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554 } |
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555 |
67
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556 /* Duplicates the statements of basic block BB into basic block NEW_BB |
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557 and compute the new induction variables according to the IV_MAP. */ |
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558 |
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559 static void |
67
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560 graphite_copy_stmts_from_block (basic_block bb, basic_block new_bb, |
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561 htab_t rename_map, |
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562 VEC (tree, heap) *iv_map, sese region) |
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563 { |
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564 gimple_stmt_iterator gsi, gsi_tgt; |
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565 loop_p loop = bb->loop_father; |
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566 |
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567 gsi_tgt = gsi_start_bb (new_bb); |
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568 for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
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569 { |
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570 def_operand_p def_p; |
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571 ssa_op_iter op_iter; |
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572 gimple stmt = gsi_stmt (gsi); |
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573 gimple copy; |
67
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574 tree lhs; |
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575 |
67
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576 /* Do not copy labels or conditions. */ |
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577 if (gimple_code (stmt) == GIMPLE_LABEL |
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578 || gimple_code (stmt) == GIMPLE_COND) |
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579 continue; |
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580 |
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581 /* Do not copy induction variables. */ |
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582 if (is_gimple_assign (stmt) |
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583 && (lhs = gimple_assign_lhs (stmt)) |
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584 && TREE_CODE (lhs) == SSA_NAME |
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585 && is_gimple_reg (lhs) |
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586 && scev_analyzable_p (lhs, region)) |
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587 continue; |
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588 |
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589 /* Create a new copy of STMT and duplicate STMT's virtual |
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590 operands. */ |
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591 copy = gimple_copy (stmt); |
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592 gsi_insert_after (&gsi_tgt, copy, GSI_NEW_STMT); |
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593 mark_sym_for_renaming (gimple_vop (cfun)); |
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594 |
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595 maybe_duplicate_eh_stmt (copy, stmt); |
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596 gimple_duplicate_stmt_histograms (cfun, copy, cfun, stmt); |
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597 |
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598 /* Create new names for all the definitions created by COPY and |
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599 add replacement mappings for each new name. */ |
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600 FOR_EACH_SSA_DEF_OPERAND (def_p, copy, op_iter, SSA_OP_ALL_DEFS) |
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601 { |
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602 tree old_name = DEF_FROM_PTR (def_p); |
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603 tree new_name = create_new_def_for (old_name, copy, def_p); |
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604 set_rename (rename_map, old_name, new_name); |
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605 } |
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606 |
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607 if (rename_uses (copy, rename_map, &gsi_tgt, region, loop, iv_map)) |
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608 fold_stmt_inplace (copy); |
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609 |
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610 update_stmt (copy); |
55
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611 } |
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612 } |
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613 |
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614 /* Copies BB and includes in the copied BB all the statements that can |
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615 be reached following the use-def chains from the memory accesses, |
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616 and returns the next edge following this new block. */ |
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617 |
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618 edge |
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619 copy_bb_and_scalar_dependences (basic_block bb, sese region, |
67
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620 edge next_e, VEC (tree, heap) *iv_map) |
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621 { |
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622 basic_block new_bb = split_edge (next_e); |
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623 htab_t rename_map = htab_create (10, rename_map_elt_info, |
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624 eq_rename_map_elts, free); |
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625 |
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626 next_e = single_succ_edge (new_bb); |
67
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627 graphite_copy_stmts_from_block (bb, new_bb, rename_map, iv_map, region); |
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628 remove_phi_nodes (new_bb); |
67
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629 htab_delete (rename_map); |
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|
630 |
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631 return next_e; |
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632 } |
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633 |
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634 /* Returns the outermost loop in SCOP that contains BB. */ |
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635 |
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636 struct loop * |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
637 outermost_loop_in_sese (sese region, basic_block bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
638 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
639 struct loop *nest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
640 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
641 nest = bb->loop_father; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
642 while (loop_outer (nest) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
643 && loop_in_sese_p (loop_outer (nest), region)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
644 nest = loop_outer (nest); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
645 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
646 return nest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
647 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
648 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
649 /* Sets the false region of an IF_REGION to REGION. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
650 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
651 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
652 if_region_set_false_region (ifsese if_region, sese region) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
653 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
654 basic_block condition = if_region_get_condition_block (if_region); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
655 edge false_edge = get_false_edge_from_guard_bb (condition); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
656 basic_block dummy = false_edge->dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
657 edge entry_region = SESE_ENTRY (region); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
658 edge exit_region = SESE_EXIT (region); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
659 basic_block before_region = entry_region->src; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
660 basic_block last_in_region = exit_region->src; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
661 void **slot = htab_find_slot_with_hash (current_loops->exits, exit_region, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
662 htab_hash_pointer (exit_region), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
663 NO_INSERT); |
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 entry_region->flags = false_edge->flags; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
666 false_edge->flags = exit_region->flags; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
667 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
668 redirect_edge_pred (entry_region, condition); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
669 redirect_edge_pred (exit_region, before_region); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
670 redirect_edge_pred (false_edge, last_in_region); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
671 redirect_edge_succ (false_edge, single_succ (dummy)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
672 delete_basic_block (dummy); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
673 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
674 exit_region->flags = EDGE_FALLTHRU; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
675 recompute_all_dominators (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
676 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
677 SESE_EXIT (region) = false_edge; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
678 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
679 if (if_region->false_region) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
680 free (if_region->false_region); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
681 if_region->false_region = region; |
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 (slot) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
684 { |
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
|
685 struct loop_exit *loop_exit = ggc_alloc_cleared_loop_exit (); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
686 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
687 memcpy (loop_exit, *((struct loop_exit **) slot), sizeof (struct loop_exit)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
688 htab_clear_slot (current_loops->exits, slot); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
689 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
690 slot = htab_find_slot_with_hash (current_loops->exits, false_edge, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
691 htab_hash_pointer (false_edge), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
692 INSERT); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
693 loop_exit->e = false_edge; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
694 *slot = loop_exit; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
695 false_edge->src->loop_father->exits->next = loop_exit; |
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 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
698 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
699 /* Creates an IFSESE with CONDITION on edge ENTRY. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
700 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
701 static ifsese |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
702 create_if_region_on_edge (edge entry, tree condition) |
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 edge e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
705 edge_iterator ei; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
706 sese sese_region = XNEW (struct sese_s); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
707 sese true_region = XNEW (struct sese_s); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
708 sese false_region = XNEW (struct sese_s); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
709 ifsese if_region = XNEW (struct ifsese_s); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
710 edge exit = create_empty_if_region_on_edge (entry, condition); |
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 if_region->region = sese_region; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
713 if_region->region->entry = entry; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
714 if_region->region->exit = exit; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
715 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
716 FOR_EACH_EDGE (e, ei, entry->dest->succs) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
717 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
718 if (e->flags & EDGE_TRUE_VALUE) |
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 true_region->entry = e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
721 true_region->exit = single_succ_edge (e->dest); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
722 if_region->true_region = true_region; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
723 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
724 else if (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
|
725 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
726 false_region->entry = e; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
727 false_region->exit = single_succ_edge (e->dest); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
728 if_region->false_region = false_region; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
729 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
730 } |
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 return if_region; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
733 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
734 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
735 /* Moves REGION in a condition expression: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
736 | if (1) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
737 | ; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
738 | else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
739 | REGION; |
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 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
742 ifsese |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
743 move_sese_in_condition (sese region) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
744 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
745 basic_block pred_block = split_edge (SESE_ENTRY (region)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
746 ifsese if_region; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
747 |
77e2b8dfacca
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parents:
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748 SESE_ENTRY (region) = single_succ_edge (pred_block); |
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749 if_region = create_if_region_on_edge (single_pred_edge (pred_block), integer_one_node); |
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parents:
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750 if_region_set_false_region (if_region, region); |
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parents:
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|
751 |
77e2b8dfacca
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parents:
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changeset
|
752 return if_region; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
753 } |
77e2b8dfacca
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parents:
diff
changeset
|
754 |
63
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parents:
55
diff
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755 /* Replaces the condition of the IF_REGION with CONDITION: |
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756 | if (CONDITION) |
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|
757 | true_region; |
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parents:
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758 | else |
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759 | false_region; |
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760 */ |
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parents:
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761 |
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parents:
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diff
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|
762 void |
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parents:
55
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763 set_ifsese_condition (ifsese if_region, tree condition) |
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764 { |
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parents:
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765 sese region = if_region->region; |
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parents:
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|
766 edge entry = region->entry; |
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parents:
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diff
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767 basic_block bb = entry->dest; |
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parents:
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768 gimple last = last_stmt (bb); |
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parents:
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769 gimple_stmt_iterator gsi = gsi_last_bb (bb); |
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parents:
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770 gimple cond_stmt; |
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parents:
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diff
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771 |
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parents:
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diff
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772 gcc_assert (gimple_code (last) == GIMPLE_COND); |
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parents:
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diff
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773 |
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parents:
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diff
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774 gsi_remove (&gsi, true); |
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parents:
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diff
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775 gsi = gsi_last_bb (bb); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
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776 condition = force_gimple_operand_gsi (&gsi, condition, true, NULL, |
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parents:
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diff
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|
777 false, GSI_NEW_STMT); |
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parents:
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778 cond_stmt = gimple_build_cond_from_tree (condition, NULL_TREE, NULL_TREE); |
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diff
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|
779 gsi = gsi_last_bb (bb); |
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parents:
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diff
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|
780 gsi_insert_after (&gsi, cond_stmt, GSI_NEW_STMT); |
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parents:
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|
781 } |
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parents:
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diff
changeset
|
782 |
55
77e2b8dfacca
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parents:
diff
changeset
|
783 /* Returns the scalar evolution of T in REGION. Every variable that |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
784 is not defined in the REGION is considered a parameter. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
785 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
786 tree |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
787 scalar_evolution_in_region (sese region, loop_p loop, tree t) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
788 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
789 gimple def; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
790 struct loop *def_loop; |
77e2b8dfacca
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parents:
diff
changeset
|
791 basic_block before = block_before_sese (region); |
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parents:
diff
changeset
|
792 |
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
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|
793 /* SCOP parameters. */ |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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|
794 if (TREE_CODE (t) == SSA_NAME |
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parents:
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|
795 && !defined_in_sese_p (t, region)) |
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parents:
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|
796 return t; |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
797 |
55
77e2b8dfacca
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parents:
diff
changeset
|
798 if (TREE_CODE (t) != SSA_NAME |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
799 || loop_in_sese_p (loop, region)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
800 return instantiate_scev (before, loop, |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
801 analyze_scalar_evolution (loop, t)); |
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update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
802 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
803 def = SSA_NAME_DEF_STMT (t); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
804 def_loop = loop_containing_stmt (def); |
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 if (loop_in_sese_p (def_loop, region)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
807 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
808 t = analyze_scalar_evolution (def_loop, t); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
809 def_loop = superloop_at_depth (def_loop, loop_depth (loop) + 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
810 t = compute_overall_effect_of_inner_loop (def_loop, t); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
811 return t; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
812 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
813 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
814 return instantiate_scev (before, loop, t); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
815 } |