Mercurial > hg > CbC > CbC_gcc
annotate gcc/store-motion.c @ 118:fd00160c1b76
ifdef TARGET_64BIT
author | mir3636 |
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date | Tue, 27 Feb 2018 15:01:35 +0900 |
parents | 04ced10e8804 |
children | 84e7813d76e9 |
rev | line source |
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1 /* Store motion via Lazy Code Motion on the reverse CFG. |
111 | 2 Copyright (C) 1997-2017 Free Software Foundation, Inc. |
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3 |
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4 This file is part of GCC. |
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5 |
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6 GCC is free software; you can redistribute it and/or modify it under |
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7 the terms of the GNU General Public License as published by the Free |
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8 Software Foundation; either version 3, or (at your option) any later |
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9 version. |
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10 |
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 for more details. |
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15 |
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16 You should have received a copy of the GNU General Public License |
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17 along with GCC; see the file COPYING3. If not see |
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18 <http://www.gnu.org/licenses/>. */ |
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19 |
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20 #include "config.h" |
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21 #include "system.h" |
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22 #include "coretypes.h" |
111 | 23 #include "backend.h" |
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24 #include "rtl.h" |
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25 #include "tree.h" |
111 | 26 #include "predict.h" |
27 #include "df.h" | |
28 #include "toplev.h" | |
29 | |
30 #include "cfgrtl.h" | |
31 #include "cfganal.h" | |
32 #include "lcm.h" | |
33 #include "cfgcleanup.h" | |
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34 #include "expr.h" |
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35 #include "tree-pass.h" |
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36 #include "dbgcnt.h" |
111 | 37 #include "rtl-iter.h" |
38 #include "print-rtl.h" | |
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39 |
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40 /* This pass implements downward store motion. |
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41 As of May 1, 2009, the pass is not enabled by default on any target, |
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42 but bootstrap completes on ia64 and x86_64 with the pass enabled. */ |
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43 |
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44 /* TODO: |
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45 - remove_reachable_equiv_notes is an incomprehensible pile of goo and |
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46 a compile time hog that needs a rewrite (maybe cache st_exprs to |
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47 invalidate REG_EQUAL/REG_EQUIV notes for?). |
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48 - pattern_regs in st_expr should be a regset (on its own obstack). |
111 | 49 - store_motion_mems should be a vec instead of a list. |
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50 - there should be an alloc pool for struct st_expr objects. |
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51 - investigate whether it is helpful to make the address of an st_expr |
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52 a cselib VALUE. |
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53 - when GIMPLE alias information is exported, the effectiveness of this |
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54 pass should be re-evaluated. |
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55 */ |
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56 |
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57 /* This is a list of store expressions (MEMs). The structure is used |
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58 as an expression table to track stores which look interesting, and |
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59 might be moveable towards the exit block. */ |
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60 |
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61 struct st_expr |
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62 { |
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63 /* Pattern of this mem. */ |
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64 rtx pattern; |
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65 /* List of registers mentioned by the mem. */ |
111 | 66 vec<rtx> pattern_regs; |
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67 /* INSN list of stores that are locally anticipatable. */ |
111 | 68 vec<rtx_insn *> antic_stores; |
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69 /* INSN list of stores that are locally available. */ |
111 | 70 vec<rtx_insn *> avail_stores; |
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71 /* Next in the list. */ |
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72 struct st_expr * next; |
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73 /* Store ID in the dataflow bitmaps. */ |
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74 int index; |
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75 /* Hash value for the hash table. */ |
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76 unsigned int hash_index; |
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77 /* Register holding the stored expression when a store is moved. |
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78 This field is also used as a cache in find_moveable_store, see |
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79 LAST_AVAIL_CHECK_FAILURE below. */ |
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80 rtx reaching_reg; |
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81 }; |
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82 |
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83 /* Head of the list of load/store memory refs. */ |
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84 static struct st_expr * store_motion_mems = NULL; |
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85 |
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86 /* These bitmaps will hold the local dataflow properties per basic block. */ |
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87 static sbitmap *st_kill, *st_avloc, *st_antloc, *st_transp; |
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88 |
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89 /* Nonzero for expressions which should be inserted on a specific edge. */ |
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90 static sbitmap *st_insert_map; |
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91 |
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92 /* Nonzero for expressions which should be deleted in a specific block. */ |
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93 static sbitmap *st_delete_map; |
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94 |
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95 /* Global holding the number of store expressions we are dealing with. */ |
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96 static int num_stores; |
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97 |
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98 /* Contains the edge_list returned by pre_edge_lcm. */ |
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99 static struct edge_list *edge_list; |
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100 |
111 | 101 /* Hashtable helpers. */ |
102 | |
103 struct st_expr_hasher : nofree_ptr_hash <st_expr> | |
104 { | |
105 static inline hashval_t hash (const st_expr *); | |
106 static inline bool equal (const st_expr *, const st_expr *); | |
107 }; | |
108 | |
109 inline hashval_t | |
110 st_expr_hasher::hash (const st_expr *x) | |
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111 { |
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112 int do_not_record_p = 0; |
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113 return hash_rtx (x->pattern, GET_MODE (x->pattern), &do_not_record_p, NULL, false); |
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114 } |
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115 |
111 | 116 inline bool |
117 st_expr_hasher::equal (const st_expr *ptr1, const st_expr *ptr2) | |
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118 { |
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119 return exp_equiv_p (ptr1->pattern, ptr2->pattern, 0, true); |
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120 } |
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121 |
111 | 122 /* Hashtable for the load/store memory refs. */ |
123 static hash_table<st_expr_hasher> *store_motion_mems_table; | |
124 | |
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125 /* This will search the st_expr list for a matching expression. If it |
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126 doesn't find one, we create one and initialize it. */ |
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127 |
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128 static struct st_expr * |
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129 st_expr_entry (rtx x) |
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130 { |
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131 int do_not_record_p = 0; |
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132 struct st_expr * ptr; |
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133 unsigned int hash; |
111 | 134 st_expr **slot; |
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135 struct st_expr e; |
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136 |
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137 hash = hash_rtx (x, GET_MODE (x), &do_not_record_p, |
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138 NULL, /*have_reg_qty=*/false); |
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139 |
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140 e.pattern = x; |
111 | 141 slot = store_motion_mems_table->find_slot_with_hash (&e, hash, INSERT); |
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142 if (*slot) |
111 | 143 return *slot; |
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144 |
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145 ptr = XNEW (struct st_expr); |
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146 |
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147 ptr->next = store_motion_mems; |
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148 ptr->pattern = x; |
111 | 149 ptr->pattern_regs.create (0); |
150 ptr->antic_stores.create (0); | |
151 ptr->avail_stores.create (0); | |
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152 ptr->reaching_reg = NULL_RTX; |
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153 ptr->index = 0; |
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154 ptr->hash_index = hash; |
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155 store_motion_mems = ptr; |
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156 *slot = ptr; |
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157 |
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158 return ptr; |
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159 } |
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160 |
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161 /* Free up an individual st_expr entry. */ |
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162 |
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163 static void |
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164 free_st_expr_entry (struct st_expr * ptr) |
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165 { |
111 | 166 ptr->antic_stores.release (); |
167 ptr->avail_stores.release (); | |
168 ptr->pattern_regs.release (); | |
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169 |
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170 free (ptr); |
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171 } |
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172 |
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173 /* Free up all memory associated with the st_expr list. */ |
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174 |
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175 static void |
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176 free_store_motion_mems (void) |
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177 { |
111 | 178 delete store_motion_mems_table; |
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179 store_motion_mems_table = NULL; |
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180 |
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181 while (store_motion_mems) |
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182 { |
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183 struct st_expr * tmp = store_motion_mems; |
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184 store_motion_mems = store_motion_mems->next; |
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185 free_st_expr_entry (tmp); |
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186 } |
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187 store_motion_mems = NULL; |
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188 } |
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189 |
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190 /* Assign each element of the list of mems a monotonically increasing value. */ |
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191 |
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192 static int |
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193 enumerate_store_motion_mems (void) |
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194 { |
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195 struct st_expr * ptr; |
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196 int n = 0; |
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197 |
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198 for (ptr = store_motion_mems; ptr != NULL; ptr = ptr->next) |
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199 ptr->index = n++; |
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200 |
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201 return n; |
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202 } |
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203 |
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204 /* Return first item in the list. */ |
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205 |
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206 static inline struct st_expr * |
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207 first_st_expr (void) |
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208 { |
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209 return store_motion_mems; |
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210 } |
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211 |
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212 /* Return the next item in the list after the specified one. */ |
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213 |
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214 static inline struct st_expr * |
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215 next_st_expr (struct st_expr * ptr) |
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216 { |
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217 return ptr->next; |
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218 } |
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219 |
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220 /* Dump debugging info about the store_motion_mems list. */ |
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221 |
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222 static void |
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223 print_store_motion_mems (FILE * file) |
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224 { |
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225 struct st_expr * ptr; |
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226 |
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227 fprintf (dump_file, "STORE_MOTION list of MEM exprs considered:\n"); |
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228 |
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229 for (ptr = first_st_expr (); ptr != NULL; ptr = next_st_expr (ptr)) |
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230 { |
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231 fprintf (file, " Pattern (%3d): ", ptr->index); |
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232 |
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233 print_rtl (file, ptr->pattern); |
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234 |
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235 fprintf (file, "\n ANTIC stores : "); |
111 | 236 print_rtx_insn_vec (file, ptr->antic_stores); |
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237 |
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238 fprintf (file, "\n AVAIL stores : "); |
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239 |
111 | 240 print_rtx_insn_vec (file, ptr->avail_stores); |
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241 |
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242 fprintf (file, "\n\n"); |
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243 } |
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244 |
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245 fprintf (file, "\n"); |
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246 } |
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247 |
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248 /* Return zero if some of the registers in list X are killed |
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249 due to set of registers in bitmap REGS_SET. */ |
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250 |
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251 static bool |
111 | 252 store_ops_ok (const vec<rtx> &x, int *regs_set) |
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253 { |
111 | 254 unsigned int i; |
255 rtx temp; | |
256 FOR_EACH_VEC_ELT (x, i, temp) | |
257 if (regs_set[REGNO (temp)]) | |
258 return false; | |
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259 |
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260 return true; |
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261 } |
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262 |
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263 /* Returns a list of registers mentioned in X. |
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264 FIXME: A regset would be prettier and less expensive. */ |
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265 |
111 | 266 static void |
267 extract_mentioned_regs (rtx x, vec<rtx> *mentioned_regs) | |
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268 { |
111 | 269 subrtx_var_iterator::array_type array; |
270 FOR_EACH_SUBRTX_VAR (iter, array, x, NONCONST) | |
271 { | |
272 rtx x = *iter; | |
273 if (REG_P (x)) | |
274 mentioned_regs->safe_push (x); | |
275 } | |
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276 } |
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277 |
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278 /* Check to see if the load X is aliased with STORE_PATTERN. |
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279 AFTER is true if we are checking the case when STORE_PATTERN occurs |
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280 after the X. */ |
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281 |
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282 static bool |
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283 load_kills_store (const_rtx x, const_rtx store_pattern, int after) |
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284 { |
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285 if (after) |
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286 return anti_dependence (x, store_pattern); |
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287 else |
111 | 288 return true_dependence (store_pattern, GET_MODE (store_pattern), x); |
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289 } |
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290 |
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291 /* Go through the entire rtx X, looking for any loads which might alias |
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292 STORE_PATTERN. Return true if found. |
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293 AFTER is true if we are checking the case when STORE_PATTERN occurs |
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294 after the insn X. */ |
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295 |
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296 static bool |
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297 find_loads (const_rtx x, const_rtx store_pattern, int after) |
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298 { |
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299 const char * fmt; |
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300 int i, j; |
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301 int ret = false; |
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302 |
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303 if (!x) |
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304 return false; |
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305 |
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306 if (GET_CODE (x) == SET) |
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307 x = SET_SRC (x); |
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308 |
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309 if (MEM_P (x)) |
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310 { |
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311 if (load_kills_store (x, store_pattern, after)) |
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312 return true; |
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313 } |
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314 |
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315 /* Recursively process the insn. */ |
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316 fmt = GET_RTX_FORMAT (GET_CODE (x)); |
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317 |
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318 for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0 && !ret; i--) |
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319 { |
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320 if (fmt[i] == 'e') |
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321 ret |= find_loads (XEXP (x, i), store_pattern, after); |
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322 else if (fmt[i] == 'E') |
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323 for (j = XVECLEN (x, i) - 1; j >= 0; j--) |
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324 ret |= find_loads (XVECEXP (x, i, j), store_pattern, after); |
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325 } |
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326 return ret; |
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327 } |
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328 |
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329 /* Go through pattern PAT looking for any loads which might kill the |
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330 store in X. Return true if found. |
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331 AFTER is true if we are checking the case when loads kill X occurs |
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332 after the insn for PAT. */ |
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333 |
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334 static inline bool |
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335 store_killed_in_pat (const_rtx x, const_rtx pat, int after) |
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336 { |
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337 if (GET_CODE (pat) == SET) |
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338 { |
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339 rtx dest = SET_DEST (pat); |
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340 |
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341 if (GET_CODE (dest) == ZERO_EXTRACT) |
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342 dest = XEXP (dest, 0); |
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343 |
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344 /* Check for memory stores to aliased objects. */ |
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345 if (MEM_P (dest) |
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346 && !exp_equiv_p (dest, x, 0, true)) |
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347 { |
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348 if (after) |
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349 { |
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350 if (output_dependence (dest, x)) |
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351 return true; |
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352 } |
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353 else |
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354 { |
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355 if (output_dependence (x, dest)) |
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356 return true; |
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357 } |
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358 } |
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359 } |
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360 |
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361 if (find_loads (pat, x, after)) |
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362 return true; |
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363 |
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364 return false; |
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365 } |
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366 |
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367 /* Check if INSN kills the store pattern X (is aliased with it). |
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368 AFTER is true if we are checking the case when store X occurs |
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369 after the insn. Return true if it does. */ |
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370 |
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371 static bool |
111 | 372 store_killed_in_insn (const_rtx x, const vec<rtx> &x_regs, |
373 const rtx_insn *insn, int after) | |
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374 { |
111 | 375 const_rtx note, pat; |
55
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376 |
63
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377 if (! NONDEBUG_INSN_P (insn)) |
55
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378 return false; |
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379 |
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380 if (CALL_P (insn)) |
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381 { |
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382 /* A normal or pure call might read from pattern, |
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383 but a const call will not. */ |
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384 if (!RTL_CONST_CALL_P (insn)) |
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385 return true; |
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386 |
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387 /* But even a const call reads its parameters. Check whether the |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 base of some of registers used in mem is stack pointer. */ |
111 | 389 rtx temp; |
390 unsigned int i; | |
391 FOR_EACH_VEC_ELT (x_regs, i, temp) | |
392 if (may_be_sp_based_p (temp)) | |
393 return true; | |
55
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parents:
diff
changeset
|
394 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
395 return false; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
396 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 pat = PATTERN (insn); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 if (GET_CODE (pat) == SET) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 if (store_killed_in_pat (x, pat, after)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 return true; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 } |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 else if (GET_CODE (pat) == PARALLEL) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406 int i; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 for (i = 0; i < XVECLEN (pat, 0); i++) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 if (store_killed_in_pat (x, XVECEXP (pat, 0, i), after)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 return true; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 else if (find_loads (PATTERN (insn), x, after)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 return true; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 /* If this insn has a REG_EQUAL or REG_EQUIV note referencing a memory |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 location aliased with X, then this insn kills X. */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
417 note = find_reg_equal_equiv_note (insn); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 if (! note) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
419 return false; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
420 note = XEXP (note, 0); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
422 /* However, if the note represents a must alias rather than a may |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
423 alias relationship, then it does not kill X. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
424 if (exp_equiv_p (note, x, 0, true)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
425 return false; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
426 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
427 /* See if there are any aliased loads in the note. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 return find_loads (note, x, after); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
429 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
430 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 /* Returns true if the expression X is loaded or clobbered on or after INSN |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
432 within basic block BB. REGS_SET_AFTER is bitmap of registers set in |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 or after the insn. X_REGS is list of registers mentioned in X. If the store |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 is killed, return the last insn in that it occurs in FAIL_INSN. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
435 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436 static bool |
111 | 437 store_killed_after (const_rtx x, const vec<rtx> &x_regs, |
438 const rtx_insn *insn, const_basic_block bb, | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
439 int *regs_set_after, rtx *fail_insn) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
440 { |
111 | 441 rtx_insn *last = BB_END (bb), *act; |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
442 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
443 if (!store_ops_ok (x_regs, regs_set_after)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
444 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
445 /* We do not know where it will happen. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
446 if (fail_insn) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
447 *fail_insn = NULL_RTX; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
448 return true; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
449 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
450 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
451 /* Scan from the end, so that fail_insn is determined correctly. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
452 for (act = last; act != PREV_INSN (insn); act = PREV_INSN (act)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
453 if (store_killed_in_insn (x, x_regs, act, false)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
454 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
455 if (fail_insn) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
456 *fail_insn = act; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
457 return true; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
458 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
459 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
460 return false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
461 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
462 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
463 /* Returns true if the expression X is loaded or clobbered on or before INSN |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
464 within basic block BB. X_REGS is list of registers mentioned in X. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
465 REGS_SET_BEFORE is bitmap of registers set before or in this insn. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
466 static bool |
111 | 467 store_killed_before (const_rtx x, const vec<rtx> &x_regs, |
468 const rtx_insn *insn, const_basic_block bb, | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
469 int *regs_set_before) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
470 { |
111 | 471 rtx_insn *first = BB_HEAD (bb); |
55
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 if (!store_ops_ok (x_regs, regs_set_before)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
474 return true; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
475 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
476 for ( ; insn != PREV_INSN (first); insn = PREV_INSN (insn)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
477 if (store_killed_in_insn (x, x_regs, insn, true)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
478 return true; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
479 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
480 return false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
481 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
482 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
483 /* The last insn in the basic block that compute_store_table is processing, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
484 where store_killed_after is true for X. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
485 Since we go through the basic block from BB_END to BB_HEAD, this is |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
486 also the available store at the end of the basic block. Therefore |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
487 this is in effect a cache, to avoid calling store_killed_after for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
488 equivalent aliasing store expressions. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
489 This value is only meaningful during the computation of the store |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
490 table. We hi-jack the REACHING_REG field of struct st_expr to save |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
491 a bit of memory. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
492 #define LAST_AVAIL_CHECK_FAILURE(x) ((x)->reaching_reg) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
493 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
494 /* Determine whether INSN is MEM store pattern that we will consider moving. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
495 REGS_SET_BEFORE is bitmap of registers set before (and including) the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
496 current insn, REGS_SET_AFTER is bitmap of registers set after (and |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
497 including) the insn in this basic block. We must be passing through BB from |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
498 head to end, as we are using this fact to speed things up. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
499 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
500 The results are stored this way: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
501 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
502 -- the first anticipatable expression is added into ANTIC_STORES |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
503 -- if the processed expression is not anticipatable, NULL_RTX is added |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
504 there instead, so that we can use it as indicator that no further |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
505 expression of this type may be anticipatable |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
506 -- if the expression is available, it is added as head of AVAIL_STORES; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
507 consequently, all of them but this head are dead and may be deleted. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
508 -- if the expression is not available, the insn due to that it fails to be |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
509 available is stored in REACHING_REG (via LAST_AVAIL_CHECK_FAILURE). |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
510 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
511 The things are complicated a bit by fact that there already may be stores |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
512 to the same MEM from other blocks; also caller must take care of the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
513 necessary cleanup of the temporary markers after end of the basic block. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
514 */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
515 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
516 static void |
111 | 517 find_moveable_store (rtx_insn *insn, int *regs_set_before, int *regs_set_after) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
518 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
519 struct st_expr * ptr; |
111 | 520 rtx dest, set; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
521 int check_anticipatable, check_available; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
522 basic_block bb = BLOCK_FOR_INSN (insn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
523 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
524 set = single_set (insn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
525 if (!set) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
526 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
527 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
528 dest = SET_DEST (set); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
529 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
530 if (! MEM_P (dest) || MEM_VOLATILE_P (dest) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
531 || GET_MODE (dest) == BLKmode) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
532 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
533 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
534 if (side_effects_p (dest)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
535 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
536 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
537 /* If we are handling exceptions, we must be careful with memory references |
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
|
538 that may trap. If we are not, the behavior is undefined, so we may just |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
539 continue. */ |
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
|
540 if (cfun->can_throw_non_call_exceptions && may_trap_p (dest)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
541 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
542 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
543 /* Even if the destination cannot trap, the source may. In this case we'd |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
544 need to handle updating the REG_EH_REGION note. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
545 if (find_reg_note (insn, REG_EH_REGION, NULL_RTX)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
546 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
547 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
548 /* Make sure that the SET_SRC of this store insns can be assigned to |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
549 a register, or we will fail later on in replace_store_insn, which |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
550 assumes that we can do this. But sometimes the target machine has |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
551 oddities like MEM read-modify-write instruction. See for example |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
552 PR24257. */ |
111 | 553 if (!can_assign_to_reg_without_clobbers_p (SET_SRC (set), |
554 GET_MODE (SET_SRC (set)))) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
555 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
556 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
557 ptr = st_expr_entry (dest); |
111 | 558 if (ptr->pattern_regs.is_empty ()) |
559 extract_mentioned_regs (dest, &ptr->pattern_regs); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
560 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
561 /* Do not check for anticipatability if we either found one anticipatable |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
562 store already, or tested for one and found out that it was killed. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
563 check_anticipatable = 0; |
111 | 564 if (ptr->antic_stores.is_empty ()) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
565 check_anticipatable = 1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
566 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
567 { |
111 | 568 rtx_insn *tmp = ptr->antic_stores.last (); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
569 if (tmp != NULL_RTX |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
570 && BLOCK_FOR_INSN (tmp) != bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
571 check_anticipatable = 1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
572 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
573 if (check_anticipatable) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
574 { |
111 | 575 rtx_insn *tmp; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
576 if (store_killed_before (dest, ptr->pattern_regs, insn, bb, regs_set_before)) |
111 | 577 tmp = NULL; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
578 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
579 tmp = insn; |
111 | 580 ptr->antic_stores.safe_push (tmp); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
581 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
582 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
583 /* It is not necessary to check whether store is available if we did |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
584 it successfully before; if we failed before, do not bother to check |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
585 until we reach the insn that caused us to fail. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
586 check_available = 0; |
111 | 587 if (ptr->avail_stores.is_empty ()) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
588 check_available = 1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
589 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
590 { |
111 | 591 rtx_insn *tmp = ptr->avail_stores.last (); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
592 if (BLOCK_FOR_INSN (tmp) != bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
593 check_available = 1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
594 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
595 if (check_available) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
596 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
597 /* Check that we have already reached the insn at that the check |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
598 failed last time. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
599 if (LAST_AVAIL_CHECK_FAILURE (ptr)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
600 { |
111 | 601 rtx_insn *tmp; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
602 for (tmp = BB_END (bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
603 tmp != insn && tmp != LAST_AVAIL_CHECK_FAILURE (ptr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
604 tmp = PREV_INSN (tmp)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
605 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
606 if (tmp == insn) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
607 check_available = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
608 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
609 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
610 check_available = store_killed_after (dest, ptr->pattern_regs, insn, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
611 bb, regs_set_after, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
612 &LAST_AVAIL_CHECK_FAILURE (ptr)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
613 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
614 if (!check_available) |
111 | 615 ptr->avail_stores.safe_push (insn); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
616 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
617 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
618 /* Find available and anticipatable stores. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
619 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
620 static int |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
621 compute_store_table (void) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
622 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
623 int ret; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
624 basic_block bb; |
111 | 625 rtx_insn *insn; |
626 rtx_insn *tmp; | |
627 df_ref def; | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
628 int *last_set_in, *already_set; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
629 struct st_expr * ptr, **prev_next_ptr_ptr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
630 unsigned int max_gcse_regno = max_reg_num (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
631 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
632 store_motion_mems = NULL; |
111 | 633 store_motion_mems_table = new hash_table<st_expr_hasher> (13); |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
634 last_set_in = XCNEWVEC (int, max_gcse_regno); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
635 already_set = XNEWVEC (int, max_gcse_regno); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
636 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
637 /* Find all the stores we care about. */ |
111 | 638 FOR_EACH_BB_FN (bb, cfun) |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
639 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
640 /* First compute the registers set in this block. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
641 FOR_BB_INSNS (bb, insn) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
642 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
643 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
644 if (! NONDEBUG_INSN_P (insn)) |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
645 continue; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
646 |
111 | 647 FOR_EACH_INSN_DEF (def, insn) |
648 last_set_in[DF_REF_REGNO (def)] = INSN_UID (insn); | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
649 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
650 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
651 /* Now find the stores. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
652 memset (already_set, 0, sizeof (int) * max_gcse_regno); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
653 FOR_BB_INSNS (bb, insn) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
654 { |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
655 if (! NONDEBUG_INSN_P (insn)) |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
656 continue; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
657 |
111 | 658 FOR_EACH_INSN_DEF (def, insn) |
659 already_set[DF_REF_REGNO (def)] = INSN_UID (insn); | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
660 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
661 /* Now that we've marked regs, look for stores. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
662 find_moveable_store (insn, already_set, last_set_in); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
663 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
664 /* Unmark regs that are no longer set. */ |
111 | 665 FOR_EACH_INSN_DEF (def, insn) |
666 if (last_set_in[DF_REF_REGNO (def)] == INSN_UID (insn)) | |
667 last_set_in[DF_REF_REGNO (def)] = 0; | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
668 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
669 |
111 | 670 if (flag_checking) |
671 { | |
672 /* last_set_in should now be all-zero. */ | |
673 for (unsigned regno = 0; regno < max_gcse_regno; regno++) | |
674 gcc_assert (!last_set_in[regno]); | |
675 } | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
676 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
677 /* Clear temporary marks. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
678 for (ptr = first_st_expr (); ptr != NULL; ptr = next_st_expr (ptr)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
679 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
680 LAST_AVAIL_CHECK_FAILURE (ptr) = NULL_RTX; |
111 | 681 if (!ptr->antic_stores.is_empty () |
682 && (tmp = ptr->antic_stores.last ()) == NULL) | |
683 ptr->antic_stores.pop (); | |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
684 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
685 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
686 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
687 /* Remove the stores that are not available anywhere, as there will |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
688 be no opportunity to optimize them. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
689 for (ptr = store_motion_mems, prev_next_ptr_ptr = &store_motion_mems; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
690 ptr != NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
691 ptr = *prev_next_ptr_ptr) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
692 { |
111 | 693 if (ptr->avail_stores.is_empty ()) |
55
77e2b8dfacca
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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 *prev_next_ptr_ptr = ptr->next; |
111 | 696 store_motion_mems_table->remove_elt_with_hash (ptr, ptr->hash_index); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
697 free_st_expr_entry (ptr); |
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 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
700 prev_next_ptr_ptr = &ptr->next; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
701 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
702 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
703 ret = enumerate_store_motion_mems (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
704 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
705 if (dump_file) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
706 print_store_motion_mems (dump_file); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
707 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
708 free (last_set_in); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
709 free (already_set); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
710 return ret; |
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 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
713 /* In all code following after this, REACHING_REG has its original |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
714 meaning again. Avoid confusion, and undef the accessor macro for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
715 the temporary marks usage in compute_store_table. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
716 #undef LAST_AVAIL_CHECK_FAILURE |
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 /* Insert an instruction at the beginning of a basic block, and update |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
719 the BB_HEAD if needed. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
720 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
721 static void |
111 | 722 insert_insn_start_basic_block (rtx_insn *insn, basic_block bb) |
55
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 /* Insert at start of successor block. */ |
111 | 725 rtx_insn *prev = PREV_INSN (BB_HEAD (bb)); |
726 rtx_insn *before = BB_HEAD (bb); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
727 while (before != 0) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
728 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
729 if (! LABEL_P (before) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
730 && !NOTE_INSN_BASIC_BLOCK_P (before)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
731 break; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
732 prev = before; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
733 if (prev == BB_END (bb)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
734 break; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
735 before = NEXT_INSN (before); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
736 } |
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 insn = emit_insn_after_noloc (insn, prev, bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
739 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
740 if (dump_file) |
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 fprintf (dump_file, "STORE_MOTION insert store at start of BB %d:\n", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
743 bb->index); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
744 print_inline_rtx (dump_file, insn, 6); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
745 fprintf (dump_file, "\n"); |
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 /* This routine will insert a store on an edge. EXPR is the st_expr entry for |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
750 the memory reference, and E is the edge to insert it on. Returns nonzero |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
751 if an edge insertion was performed. */ |
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 static int |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
754 insert_store (struct st_expr * expr, edge e) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
755 { |
111 | 756 rtx reg; |
757 rtx_insn *insn; | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
758 basic_block bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
759 edge tmp; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
760 edge_iterator ei; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
761 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
762 /* We did all the deleted before this insert, so if we didn't delete a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
763 store, then we haven't set the reaching reg yet either. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
764 if (expr->reaching_reg == NULL_RTX) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
765 return 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
766 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
767 if (e->flags & EDGE_FAKE) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
768 return 0; |
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 reg = expr->reaching_reg; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
771 insn = gen_move_insn (copy_rtx (expr->pattern), reg); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
772 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
773 /* If we are inserting this expression on ALL predecessor edges of a BB, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
774 insert it at the start of the BB, and reset the insert bits on the other |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
775 edges so we don't try to insert it on the other edges. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
776 bb = e->dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
777 FOR_EACH_EDGE (tmp, ei, e->dest->preds) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
778 if (!(tmp->flags & EDGE_FAKE)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
779 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
780 int index = EDGE_INDEX (edge_list, tmp->src, tmp->dest); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
781 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
782 gcc_assert (index != EDGE_INDEX_NO_EDGE); |
111 | 783 if (! bitmap_bit_p (st_insert_map[index], expr->index)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
784 break; |
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 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
787 /* If tmp is NULL, we found an insertion on every edge, blank the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
788 insertion vector for these edges, and insert at the start of the BB. */ |
111 | 789 if (!tmp && bb != EXIT_BLOCK_PTR_FOR_FN (cfun)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
790 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
791 FOR_EACH_EDGE (tmp, ei, e->dest->preds) |
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 int index = EDGE_INDEX (edge_list, tmp->src, tmp->dest); |
111 | 794 bitmap_clear_bit (st_insert_map[index], expr->index); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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 insert_insn_start_basic_block (insn, bb); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
797 return 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
798 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
799 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
800 /* We can't put stores in the front of blocks pointed to by abnormal |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
801 edges since that may put a store where one didn't used to be. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
802 gcc_assert (!(e->flags & EDGE_ABNORMAL)); |
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 insert_insn_on_edge (insn, e); |
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 (dump_file) |
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 fprintf (dump_file, "STORE_MOTION insert insn on edge (%d, %d):\n", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
809 e->src->index, e->dest->index); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
810 print_inline_rtx (dump_file, insn, 6); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
811 fprintf (dump_file, "\n"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
814 return 1; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
815 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
816 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
817 /* Remove any REG_EQUAL or REG_EQUIV notes containing a reference to the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
818 memory location in SMEXPR set in basic block BB. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
819 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
820 This could be rather expensive. */ |
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 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
823 remove_reachable_equiv_notes (basic_block bb, struct st_expr *smexpr) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
824 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
825 edge_iterator *stack, ei; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
826 int sp; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
827 edge act; |
111 | 828 auto_sbitmap visited (last_basic_block_for_fn (cfun)); |
829 rtx note; | |
830 rtx_insn *insn; | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
831 rtx mem = smexpr->pattern; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
832 |
111 | 833 stack = XNEWVEC (edge_iterator, n_basic_blocks_for_fn (cfun)); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
834 sp = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
835 ei = ei_start (bb->succs); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
836 |
111 | 837 bitmap_clear (visited); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
838 |
111 | 839 act = (EDGE_COUNT (ei_container (ei)) |
840 ? EDGE_I (ei_container (ei), 0) | |
841 : NULL); | |
842 for (;;) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
843 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
844 if (!act) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
845 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
846 if (!sp) |
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 free (stack); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
849 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
850 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
851 act = ei_edge (stack[--sp]); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
852 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
853 bb = act->dest; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
854 |
111 | 855 if (bb == EXIT_BLOCK_PTR_FOR_FN (cfun) |
856 || bitmap_bit_p (visited, bb->index)) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
857 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
858 if (!ei_end_p (ei)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
859 ei_next (&ei); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
860 act = (! ei_end_p (ei)) ? ei_edge (ei) : NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
861 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
862 } |
111 | 863 bitmap_set_bit (visited, bb->index); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
864 |
111 | 865 rtx_insn *last; |
866 if (bitmap_bit_p (st_antloc[bb->index], smexpr->index)) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
867 { |
111 | 868 unsigned int i; |
869 FOR_EACH_VEC_ELT_REVERSE (smexpr->antic_stores, i, last) | |
870 if (BLOCK_FOR_INSN (last) == bb) | |
871 break; | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
872 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
873 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
874 last = NEXT_INSN (BB_END (bb)); |
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 for (insn = BB_HEAD (bb); insn != last; insn = NEXT_INSN (insn)) |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
877 if (NONDEBUG_INSN_P (insn)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
878 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
879 note = find_reg_equal_equiv_note (insn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
880 if (!note || !exp_equiv_p (XEXP (note, 0), mem, 0, true)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
881 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
882 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
883 if (dump_file) |
111 | 884 fprintf (dump_file, |
885 "STORE_MOTION drop REG_EQUAL note at insn %d:\n", | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
886 INSN_UID (insn)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
887 remove_note (insn, note); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
888 } |
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 (!ei_end_p (ei)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
891 ei_next (&ei); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
892 act = (! ei_end_p (ei)) ? ei_edge (ei) : NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
893 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
894 if (EDGE_COUNT (bb->succs) > 0) |
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 if (act) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
897 stack[sp++] = ei; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
898 ei = ei_start (bb->succs); |
111 | 899 act = (EDGE_COUNT (ei_container (ei)) |
900 ? EDGE_I (ei_container (ei), 0) | |
901 : NULL); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
902 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
903 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
904 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
905 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
906 /* This routine will replace a store with a SET to a specified register. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
907 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
908 static void |
111 | 909 replace_store_insn (rtx reg, rtx_insn *del, basic_block bb, |
910 struct st_expr *smexpr) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
911 { |
111 | 912 rtx_insn *insn; |
913 rtx mem, note, set; | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
914 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
915 mem = smexpr->pattern; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
916 insn = gen_move_insn (reg, SET_SRC (single_set (del))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
917 |
111 | 918 unsigned int i; |
919 rtx_insn *temp; | |
920 FOR_EACH_VEC_ELT_REVERSE (smexpr->antic_stores, i, temp) | |
921 if (temp == del) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
922 { |
111 | 923 smexpr->antic_stores[i] = insn; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
924 break; |
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 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
927 /* Move the notes from the deleted insn to its replacement. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
928 REG_NOTES (insn) = REG_NOTES (del); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
929 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
930 /* Emit the insn AFTER all the notes are transferred. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
931 This is cheaper since we avoid df rescanning for the note change. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
932 insn = emit_insn_after (insn, del); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
933 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
934 if (dump_file) |
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 fprintf (dump_file, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
937 "STORE_MOTION delete insn in BB %d:\n ", bb->index); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
938 print_inline_rtx (dump_file, del, 6); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
939 fprintf (dump_file, "\nSTORE_MOTION replaced with insn:\n "); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
940 print_inline_rtx (dump_file, insn, 6); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
941 fprintf (dump_file, "\n"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
942 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
943 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
944 delete_insn (del); |
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 /* Now we must handle REG_EQUAL notes whose contents is equal to the mem; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
947 they are no longer accurate provided that they are reached by this |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
948 definition, so drop them. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
949 for (; insn != NEXT_INSN (BB_END (bb)); insn = NEXT_INSN (insn)) |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
950 if (NONDEBUG_INSN_P (insn)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
951 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
952 set = single_set (insn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
953 if (!set) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
954 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
955 if (exp_equiv_p (SET_DEST (set), mem, 0, true)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
956 return; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
957 note = find_reg_equal_equiv_note (insn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
958 if (!note || !exp_equiv_p (XEXP (note, 0), mem, 0, true)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
959 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
960 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
961 if (dump_file) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
962 fprintf (dump_file, "STORE_MOTION drop REG_EQUAL note at insn %d:\n", |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
963 INSN_UID (insn)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
964 remove_note (insn, note); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
965 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
966 remove_reachable_equiv_notes (bb, smexpr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
967 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
968 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
969 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
970 /* Delete a store, but copy the value that would have been stored into |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
971 the reaching_reg for later storing. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
974 delete_store (struct st_expr * expr, basic_block bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
975 { |
111 | 976 rtx reg; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
977 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
978 if (expr->reaching_reg == NULL_RTX) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
979 expr->reaching_reg = gen_reg_rtx_and_attrs (expr->pattern); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
980 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
981 reg = expr->reaching_reg; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
982 |
111 | 983 unsigned int len = expr->avail_stores.length (); |
984 for (unsigned int i = len - 1; i < len; i--) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
985 { |
111 | 986 rtx_insn *del = expr->avail_stores[i]; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
987 if (BLOCK_FOR_INSN (del) == bb) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
988 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
989 /* We know there is only one since we deleted redundant |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
990 ones during the available computation. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
991 replace_store_insn (reg, del, bb, expr); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
992 break; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
993 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
994 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
995 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
996 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
997 /* Fill in available, anticipatable, transparent and kill vectors in |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
998 STORE_DATA, based on lists of available and anticipatable stores. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
999 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1000 build_store_vectors (void) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1001 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1002 basic_block bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1003 int *regs_set_in_block; |
111 | 1004 rtx_insn *insn; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1005 struct st_expr * ptr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1006 unsigned int max_gcse_regno = max_reg_num (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1007 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1008 /* Build the gen_vector. This is any store in the table which is not killed |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1009 by aliasing later in its block. */ |
111 | 1010 st_avloc = sbitmap_vector_alloc (last_basic_block_for_fn (cfun), |
1011 num_stores); | |
1012 bitmap_vector_clear (st_avloc, last_basic_block_for_fn (cfun)); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1013 |
111 | 1014 st_antloc = sbitmap_vector_alloc (last_basic_block_for_fn (cfun), |
1015 num_stores); | |
1016 bitmap_vector_clear (st_antloc, last_basic_block_for_fn (cfun)); | |
55
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 for (ptr = first_st_expr (); ptr != NULL; ptr = next_st_expr (ptr)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1019 { |
111 | 1020 unsigned int len = ptr->avail_stores.length (); |
1021 for (unsigned int i = len - 1; i < len; i--) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1022 { |
111 | 1023 insn = ptr->avail_stores[i]; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1024 bb = BLOCK_FOR_INSN (insn); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1025 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1026 /* If we've already seen an available expression in this block, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1027 we can delete this one (It occurs earlier in the block). We'll |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1028 copy the SRC expression to an unused register in case there |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1029 are any side effects. */ |
111 | 1030 if (bitmap_bit_p (st_avloc[bb->index], ptr->index)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1031 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1032 rtx r = gen_reg_rtx_and_attrs (ptr->pattern); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1033 if (dump_file) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1034 fprintf (dump_file, "Removing redundant store:\n"); |
111 | 1035 replace_store_insn (r, insn, bb, ptr); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1036 continue; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1037 } |
111 | 1038 bitmap_set_bit (st_avloc[bb->index], ptr->index); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1039 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1040 |
111 | 1041 unsigned int i; |
1042 FOR_EACH_VEC_ELT_REVERSE (ptr->antic_stores, i, insn) | |
55
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 bb = BLOCK_FOR_INSN (insn); |
111 | 1045 bitmap_set_bit (st_antloc[bb->index], ptr->index); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1046 } |
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1047 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1048 |
111 | 1049 st_kill = sbitmap_vector_alloc (last_basic_block_for_fn (cfun), num_stores); |
1050 bitmap_vector_clear (st_kill, last_basic_block_for_fn (cfun)); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1051 |
111 | 1052 st_transp = sbitmap_vector_alloc (last_basic_block_for_fn (cfun), num_stores); |
1053 bitmap_vector_clear (st_transp, last_basic_block_for_fn (cfun)); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1054 regs_set_in_block = XNEWVEC (int, max_gcse_regno); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1055 |
111 | 1056 FOR_EACH_BB_FN (bb, cfun) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1057 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1058 memset (regs_set_in_block, 0, sizeof (int) * max_gcse_regno); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1059 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1060 FOR_BB_INSNS (bb, insn) |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1061 if (NONDEBUG_INSN_P (insn)) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1062 { |
111 | 1063 df_ref def; |
1064 FOR_EACH_INSN_DEF (def, insn) | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1065 { |
111 | 1066 unsigned int ref_regno = DF_REF_REGNO (def); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1067 if (ref_regno < max_gcse_regno) |
111 | 1068 regs_set_in_block[DF_REF_REGNO (def)] = 1; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1069 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1070 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1071 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1072 for (ptr = first_st_expr (); ptr != NULL; ptr = next_st_expr (ptr)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1073 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1074 if (store_killed_after (ptr->pattern, ptr->pattern_regs, BB_HEAD (bb), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1075 bb, regs_set_in_block, NULL)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1076 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1077 /* It should not be necessary to consider the expression |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1078 killed if it is both anticipatable and available. */ |
111 | 1079 if (!bitmap_bit_p (st_antloc[bb->index], ptr->index) |
1080 || !bitmap_bit_p (st_avloc[bb->index], ptr->index)) | |
1081 bitmap_set_bit (st_kill[bb->index], ptr->index); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1082 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1083 else |
111 | 1084 bitmap_set_bit (st_transp[bb->index], ptr->index); |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1085 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1086 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1087 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1088 free (regs_set_in_block); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1089 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1090 if (dump_file) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1091 { |
111 | 1092 dump_bitmap_vector (dump_file, "st_antloc", "", st_antloc, |
1093 last_basic_block_for_fn (cfun)); | |
1094 dump_bitmap_vector (dump_file, "st_kill", "", st_kill, | |
1095 last_basic_block_for_fn (cfun)); | |
1096 dump_bitmap_vector (dump_file, "st_transp", "", st_transp, | |
1097 last_basic_block_for_fn (cfun)); | |
1098 dump_bitmap_vector (dump_file, "st_avloc", "", st_avloc, | |
1099 last_basic_block_for_fn (cfun)); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1100 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1101 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1102 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1103 /* Free memory used by store motion. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1104 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1105 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1106 free_store_memory (void) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1107 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1108 free_store_motion_mems (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1109 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1110 if (st_avloc) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1111 sbitmap_vector_free (st_avloc); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1112 if (st_kill) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1113 sbitmap_vector_free (st_kill); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1114 if (st_transp) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1115 sbitmap_vector_free (st_transp); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1116 if (st_antloc) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1117 sbitmap_vector_free (st_antloc); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1118 if (st_insert_map) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1119 sbitmap_vector_free (st_insert_map); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1120 if (st_delete_map) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1121 sbitmap_vector_free (st_delete_map); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1122 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1123 st_avloc = st_kill = st_transp = st_antloc = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1124 st_insert_map = st_delete_map = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1125 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1126 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1127 /* Perform store motion. Much like gcse, except we move expressions the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1128 other way by looking at the flowgraph in reverse. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1129 Return non-zero if transformations are performed by the pass. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1130 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1131 static int |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1132 one_store_motion_pass (void) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1133 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1134 basic_block bb; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1135 int x; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1136 struct st_expr * ptr; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1137 int did_edge_inserts = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1138 int n_stores_deleted = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1139 int n_stores_created = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1140 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1141 init_alias_analysis (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1142 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1143 /* Find all the available and anticipatable stores. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1144 num_stores = compute_store_table (); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1145 if (num_stores == 0) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1146 { |
111 | 1147 delete store_motion_mems_table; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1148 store_motion_mems_table = NULL; |
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|
1149 end_alias_analysis (); |
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parents:
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|
1150 return 0; |
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1151 } |
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parents:
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|
1152 |
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parents:
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|
1153 /* Now compute kill & transp vectors. */ |
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parents:
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|
1154 build_store_vectors (); |
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|
1155 add_noreturn_fake_exit_edges (); |
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|
1156 connect_infinite_loops_to_exit (); |
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parents:
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|
1157 |
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parents:
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|
1158 edge_list = pre_edge_rev_lcm (num_stores, st_transp, st_avloc, |
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parents:
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|
1159 st_antloc, st_kill, &st_insert_map, |
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parents:
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|
1160 &st_delete_map); |
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parents:
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|
1161 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
1162 /* Now we want to insert the new stores which are going to be needed. */ |
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|
1163 for (ptr = first_st_expr (); ptr != NULL; ptr = next_st_expr (ptr)) |
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|
1164 { |
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parents:
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|
1165 /* If any of the edges we have above are abnormal, we can't move this |
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parents:
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|
1166 store. */ |
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parents:
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|
1167 for (x = NUM_EDGES (edge_list) - 1; x >= 0; x--) |
111 | 1168 if (bitmap_bit_p (st_insert_map[x], ptr->index) |
55
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parents:
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|
1169 && (INDEX_EDGE (edge_list, x)->flags & EDGE_ABNORMAL)) |
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parents:
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|
1170 break; |
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parents:
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|
1171 |
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parents:
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|
1172 if (x >= 0) |
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parents:
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|
1173 { |
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parents:
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|
1174 if (dump_file != NULL) |
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parents:
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|
1175 fprintf (dump_file, |
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parents:
diff
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|
1176 "Can't replace store %d: abnormal edge from %d to %d\n", |
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parents:
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|
1177 ptr->index, INDEX_EDGE (edge_list, x)->src->index, |
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|
1178 INDEX_EDGE (edge_list, x)->dest->index); |
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parents:
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changeset
|
1179 continue; |
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parents:
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|
1180 } |
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parents:
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|
1181 |
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parents:
diff
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|
1182 /* Now we want to insert the new stores which are going to be needed. */ |
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parents:
diff
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|
1183 |
111 | 1184 FOR_EACH_BB_FN (bb, cfun) |
1185 if (bitmap_bit_p (st_delete_map[bb->index], ptr->index)) | |
55
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parents:
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|
1186 { |
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update it from 4.4.3 to 4.5.0
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parents:
diff
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|
1187 delete_store (ptr, bb); |
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parents:
diff
changeset
|
1188 n_stores_deleted++; |
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parents:
diff
changeset
|
1189 } |
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parents:
diff
changeset
|
1190 |
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parents:
diff
changeset
|
1191 for (x = 0; x < NUM_EDGES (edge_list); x++) |
111 | 1192 if (bitmap_bit_p (st_insert_map[x], ptr->index)) |
55
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parents:
diff
changeset
|
1193 { |
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update it from 4.4.3 to 4.5.0
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parents:
diff
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|
1194 did_edge_inserts |= insert_store (ptr, INDEX_EDGE (edge_list, x)); |
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parents:
diff
changeset
|
1195 n_stores_created++; |
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parents:
diff
changeset
|
1196 } |
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parents:
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changeset
|
1197 } |
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parents:
diff
changeset
|
1198 |
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parents:
diff
changeset
|
1199 if (did_edge_inserts) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1200 commit_edge_insertions (); |
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parents:
diff
changeset
|
1201 |
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parents:
diff
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|
1202 free_store_memory (); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1203 free_edge_list (edge_list); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1204 remove_fake_exit_edges (); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1205 end_alias_analysis (); |
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parents:
diff
changeset
|
1206 |
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parents:
diff
changeset
|
1207 if (dump_file) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1208 { |
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parents:
diff
changeset
|
1209 fprintf (dump_file, "STORE_MOTION of %s, %d basic blocks, ", |
111 | 1210 current_function_name (), n_basic_blocks_for_fn (cfun)); |
55
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parents:
diff
changeset
|
1211 fprintf (dump_file, "%d insns deleted, %d insns created\n", |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1212 n_stores_deleted, n_stores_created); |
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parents:
diff
changeset
|
1213 } |
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parents:
diff
changeset
|
1214 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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|
1215 return (n_stores_deleted > 0 || n_stores_created > 0); |
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parents:
diff
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|
1216 } |
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parents:
diff
changeset
|
1217 |
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parents:
diff
changeset
|
1218 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1219 static unsigned int |
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parents:
diff
changeset
|
1220 execute_rtl_store_motion (void) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1221 { |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1222 delete_unreachable_blocks (); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1223 df_analyze (); |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1224 flag_rerun_cse_after_global_opts |= one_store_motion_pass (); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
1225 return 0; |
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parents:
diff
changeset
|
1226 } |
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parents:
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changeset
|
1227 |
111 | 1228 namespace { |
1229 | |
1230 const pass_data pass_data_rtl_store_motion = | |
55
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parents:
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|
1231 { |
111 | 1232 RTL_PASS, /* type */ |
1233 "store_motion", /* name */ | |
1234 OPTGROUP_NONE, /* optinfo_flags */ | |
1235 TV_LSM, /* tv_id */ | |
1236 PROP_cfglayout, /* properties_required */ | |
1237 0, /* properties_provided */ | |
1238 0, /* properties_destroyed */ | |
1239 0, /* todo_flags_start */ | |
1240 TODO_df_finish, /* todo_flags_finish */ | |
55
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parents:
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changeset
|
1241 }; |
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parents:
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|
1242 |
111 | 1243 class pass_rtl_store_motion : public rtl_opt_pass |
1244 { | |
1245 public: | |
1246 pass_rtl_store_motion (gcc::context *ctxt) | |
1247 : rtl_opt_pass (pass_data_rtl_store_motion, ctxt) | |
1248 {} | |
1249 | |
1250 /* opt_pass methods: */ | |
1251 virtual bool gate (function *); | |
1252 virtual unsigned int execute (function *) | |
1253 { | |
1254 return execute_rtl_store_motion (); | |
1255 } | |
1256 | |
1257 }; // class pass_rtl_store_motion | |
1258 | |
1259 bool | |
1260 pass_rtl_store_motion::gate (function *fun) | |
1261 { | |
1262 return optimize > 0 && flag_gcse_sm | |
1263 && !fun->calls_setjmp | |
1264 && optimize_function_for_speed_p (fun) | |
1265 && dbg_cnt (store_motion); | |
1266 } | |
1267 | |
1268 } // anon namespace | |
1269 | |
1270 rtl_opt_pass * | |
1271 make_pass_rtl_store_motion (gcc::context *ctxt) | |
1272 { | |
1273 return new pass_rtl_store_motion (ctxt); | |
1274 } |