Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-optimize.c @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 24 May 2010 12:47:05 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Top-level control of tree optimizations. |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2 Copyright 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 Contributed by Diego Novillo <dnovillo@redhat.com> | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify | |
| 9 it under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation; either version 3, or (at your option) | |
| 11 any later version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 GNU General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "coretypes.h" | |
| 25 #include "tm.h" | |
| 26 #include "tree.h" | |
| 27 #include "tm_p.h" | |
| 28 #include "basic-block.h" | |
| 29 #include "output.h" | |
| 30 #include "diagnostic.h" | |
| 31 #include "basic-block.h" | |
| 32 #include "flags.h" | |
| 33 #include "tree-flow.h" | |
| 34 #include "tree-dump.h" | |
| 35 #include "timevar.h" | |
| 36 #include "function.h" | |
| 37 #include "langhooks.h" | |
| 38 #include "toplev.h" | |
| 39 #include "flags.h" | |
| 40 #include "cgraph.h" | |
| 41 #include "tree-inline.h" | |
| 42 #include "tree-mudflap.h" | |
| 43 #include "tree-pass.h" | |
| 44 #include "ggc.h" | |
| 45 #include "cgraph.h" | |
| 46 #include "graph.h" | |
| 47 #include "cfgloop.h" | |
| 48 #include "except.h" | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
49 #include "plugin.h" |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
50 #include "regset.h" /* FIXME: For reg_obstack. */ |
| 0 | 51 |
| 52 /* Gate: execute, or not, all of the non-trivial optimizations. */ | |
| 53 | |
| 54 static bool | |
| 55 gate_all_optimizations (void) | |
| 56 { | |
| 57 return (optimize >= 1 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
58 /* Don't bother doing anything if the program has errors. |
| 0 | 59 We have to pass down the queue if we already went into SSA */ |
| 60 && (!(errorcount || sorrycount) || gimple_in_ssa_p (cfun))); | |
| 61 } | |
| 62 | |
| 63 struct gimple_opt_pass pass_all_optimizations = | |
| 64 { | |
| 65 { | |
| 66 GIMPLE_PASS, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
67 "*all_optimizations", /* name */ |
| 0 | 68 gate_all_optimizations, /* gate */ |
| 69 NULL, /* execute */ | |
| 70 NULL, /* sub */ | |
| 71 NULL, /* next */ | |
| 72 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
73 TV_NONE, /* tv_id */ |
| 0 | 74 0, /* properties_required */ |
| 75 0, /* properties_provided */ | |
| 76 0, /* properties_destroyed */ | |
| 77 0, /* todo_flags_start */ | |
| 78 0 /* todo_flags_finish */ | |
| 79 } | |
| 80 }; | |
| 81 | |
| 82 /* Gate: execute, or not, all of the non-trivial optimizations. */ | |
| 83 | |
| 84 static bool | |
| 85 gate_all_early_local_passes (void) | |
| 86 { | |
| 87 /* Don't bother doing anything if the program has errors. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
88 return (!errorcount && !sorrycount && !in_lto_p); |
| 0 | 89 } |
| 90 | |
| 91 struct simple_ipa_opt_pass pass_early_local_passes = | |
| 92 { | |
| 93 { | |
| 94 SIMPLE_IPA_PASS, | |
| 95 "early_local_cleanups", /* name */ | |
| 96 gate_all_early_local_passes, /* gate */ | |
| 97 NULL, /* execute */ | |
| 98 NULL, /* sub */ | |
| 99 NULL, /* next */ | |
| 100 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
101 TV_NONE, /* tv_id */ |
| 0 | 102 0, /* properties_required */ |
| 103 0, /* properties_provided */ | |
| 104 0, /* properties_destroyed */ | |
| 105 0, /* todo_flags_start */ | |
| 106 TODO_remove_functions /* todo_flags_finish */ | |
| 107 } | |
| 108 }; | |
| 109 | |
| 110 static unsigned int | |
| 111 execute_early_local_optimizations (void) | |
| 112 { | |
| 113 /* First time we start with early optimization we need to advance | |
| 114 cgraph state so newly inserted functions are also early optimized. | |
| 115 However we execute early local optimizations for lately inserted | |
| 116 functions, in that case don't reset cgraph state back to IPA_SSA. */ | |
| 117 if (cgraph_state < CGRAPH_STATE_IPA_SSA) | |
| 118 cgraph_state = CGRAPH_STATE_IPA_SSA; | |
| 119 return 0; | |
| 120 } | |
| 121 | |
| 122 /* Gate: execute, or not, all of the non-trivial optimizations. */ | |
| 123 | |
| 124 static bool | |
| 125 gate_all_early_optimizations (void) | |
| 126 { | |
| 127 return (optimize >= 1 | |
| 128 /* Don't bother doing anything if the program has errors. */ | |
| 129 && !(errorcount || sorrycount)); | |
| 130 } | |
| 131 | |
| 132 struct gimple_opt_pass pass_all_early_optimizations = | |
| 133 { | |
| 134 { | |
| 135 GIMPLE_PASS, | |
| 136 "early_optimizations", /* name */ | |
| 137 gate_all_early_optimizations, /* gate */ | |
| 138 execute_early_local_optimizations, /* execute */ | |
| 139 NULL, /* sub */ | |
| 140 NULL, /* next */ | |
| 141 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
142 TV_NONE, /* tv_id */ |
| 0 | 143 0, /* properties_required */ |
| 144 0, /* properties_provided */ | |
| 145 0, /* properties_destroyed */ | |
| 146 0, /* todo_flags_start */ | |
| 147 0 /* todo_flags_finish */ | |
| 148 } | |
| 149 }; | |
| 150 | |
| 151 /* Pass: cleanup the CFG just before expanding trees to RTL. | |
| 152 This is just a round of label cleanups and case node grouping | |
| 153 because after the tree optimizers have run such cleanups may | |
| 154 be necessary. */ | |
| 155 | |
| 156 static unsigned int | |
| 157 execute_cleanup_cfg_pre_ipa (void) | |
| 158 { | |
| 159 cleanup_tree_cfg (); | |
| 160 return 0; | |
| 161 } | |
| 162 | |
| 163 struct gimple_opt_pass pass_cleanup_cfg = | |
| 164 { | |
| 165 { | |
| 166 GIMPLE_PASS, | |
| 167 "cleanup_cfg", /* name */ | |
| 168 NULL, /* gate */ | |
| 169 execute_cleanup_cfg_pre_ipa, /* execute */ | |
| 170 NULL, /* sub */ | |
| 171 NULL, /* next */ | |
| 172 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
173 TV_NONE, /* tv_id */ |
| 0 | 174 PROP_cfg, /* properties_required */ |
| 175 0, /* properties_provided */ | |
| 176 0, /* properties_destroyed */ | |
| 177 0, /* todo_flags_start */ | |
| 178 TODO_dump_func /* todo_flags_finish */ | |
| 179 } | |
| 180 }; | |
| 181 | |
| 182 | |
| 183 /* Pass: cleanup the CFG just before expanding trees to RTL. | |
| 184 This is just a round of label cleanups and case node grouping | |
| 185 because after the tree optimizers have run such cleanups may | |
| 186 be necessary. */ | |
| 187 | |
| 188 static unsigned int | |
| 189 execute_cleanup_cfg_post_optimizing (void) | |
| 190 { | |
| 191 fold_cond_expr_cond (); | |
| 192 cleanup_tree_cfg (); | |
| 193 cleanup_dead_labels (); | |
| 194 group_case_labels (); | |
| 195 return 0; | |
| 196 } | |
| 197 | |
| 198 struct gimple_opt_pass pass_cleanup_cfg_post_optimizing = | |
| 199 { | |
| 200 { | |
| 201 GIMPLE_PASS, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
202 "optimized", /* name */ |
| 0 | 203 NULL, /* gate */ |
| 204 execute_cleanup_cfg_post_optimizing, /* execute */ | |
| 205 NULL, /* sub */ | |
| 206 NULL, /* next */ | |
| 207 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
208 TV_NONE, /* tv_id */ |
| 0 | 209 PROP_cfg, /* properties_required */ |
| 210 0, /* properties_provided */ | |
| 211 0, /* properties_destroyed */ | |
| 212 0, /* todo_flags_start */ | |
| 213 TODO_dump_func /* todo_flags_finish */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
214 | TODO_remove_unused_locals |
| 0 | 215 } |
| 216 }; | |
| 217 | |
| 218 /* Pass: do the actions required to finish with tree-ssa optimization | |
| 219 passes. */ | |
| 220 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
221 unsigned int |
| 0 | 222 execute_free_datastructures (void) |
| 223 { | |
| 224 free_dominance_info (CDI_DOMINATORS); | |
| 225 free_dominance_info (CDI_POST_DOMINATORS); | |
| 226 | |
| 227 /* And get rid of annotations we no longer need. */ | |
| 228 delete_tree_cfg_annotations (); | |
| 229 | |
| 230 return 0; | |
| 231 } | |
| 232 | |
| 233 /* Pass: fixup_cfg. IPA passes, compilation of earlier functions or inlining | |
| 234 might have changed some properties, such as marked functions nothrow. | |
| 235 Remove redundant edges and basic blocks, and create new ones if necessary. | |
| 236 | |
| 237 This pass can't be executed as stand alone pass from pass manager, because | |
| 238 in between inlining and this fixup the verify_flow_info would fail. */ | |
| 239 | |
| 240 unsigned int | |
| 241 execute_fixup_cfg (void) | |
| 242 { | |
| 243 basic_block bb; | |
| 244 gimple_stmt_iterator gsi; | |
| 245 int todo = gimple_in_ssa_p (cfun) ? TODO_verify_ssa : 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
246 gcov_type count_scale; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
247 edge e; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
248 edge_iterator ei; |
| 0 | 249 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
250 if (ENTRY_BLOCK_PTR->count) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
251 count_scale = (cgraph_node (current_function_decl)->count * REG_BR_PROB_BASE |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
252 + ENTRY_BLOCK_PTR->count / 2) / ENTRY_BLOCK_PTR->count; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
253 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
254 count_scale = REG_BR_PROB_BASE; |
| 0 | 255 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
256 ENTRY_BLOCK_PTR->count = cgraph_node (current_function_decl)->count; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
257 EXIT_BLOCK_PTR->count = (EXIT_BLOCK_PTR->count * count_scale |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
258 + REG_BR_PROB_BASE / 2) / REG_BR_PROB_BASE; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
259 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
260 FOR_EACH_BB (bb) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
261 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
262 bb->count = (bb->count * count_scale |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
263 + REG_BR_PROB_BASE / 2) / REG_BR_PROB_BASE; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
264 for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
265 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
266 gimple stmt = gsi_stmt (gsi); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
267 tree decl = is_gimple_call (stmt) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
268 ? gimple_call_fndecl (stmt) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
269 : NULL; |
| 0 | 270 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
271 if (decl |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
272 && gimple_call_flags (stmt) & (ECF_CONST |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
273 | ECF_PURE |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
274 | ECF_LOOPING_CONST_OR_PURE)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
275 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
276 if (gimple_in_ssa_p (cfun)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
277 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
278 todo |= TODO_update_ssa | TODO_cleanup_cfg; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
279 mark_symbols_for_renaming (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
280 update_stmt (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
281 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
282 } |
| 0 | 283 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
284 maybe_clean_eh_stmt (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
285 } |
| 0 | 286 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
287 if (gimple_purge_dead_eh_edges (bb)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
288 todo |= TODO_cleanup_cfg; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
289 FOR_EACH_EDGE (e, ei, bb->succs) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
290 e->count = (e->count * count_scale |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
291 + REG_BR_PROB_BASE / 2) / REG_BR_PROB_BASE; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
292 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
293 if (count_scale != REG_BR_PROB_BASE) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
294 compute_function_frequency (); |
| 0 | 295 |
| 296 /* Dump a textual representation of the flowgraph. */ | |
| 297 if (dump_file) | |
| 298 gimple_dump_cfg (dump_file, dump_flags); | |
| 299 | |
| 300 return todo; | |
| 301 } | |
| 302 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
303 struct gimple_opt_pass pass_fixup_cfg = |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
304 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
305 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
306 GIMPLE_PASS, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
307 "*free_cfg_annotations", /* name */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
308 NULL, /* gate */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
309 execute_fixup_cfg, /* execute */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
310 NULL, /* sub */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
311 NULL, /* next */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
312 0, /* static_pass_number */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
313 TV_NONE, /* tv_id */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
314 PROP_cfg, /* properties_required */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
315 0, /* properties_provided */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
316 0, /* properties_destroyed */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
317 0, /* todo_flags_start */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
318 0 /* todo_flags_finish */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
319 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
320 }; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
321 |
| 0 | 322 /* Do the actions required to initialize internal data structures used |
| 323 in tree-ssa optimization passes. */ | |
| 324 | |
| 325 static unsigned int | |
| 326 execute_init_datastructures (void) | |
| 327 { | |
| 328 /* Allocate hash tables, arrays and other structures. */ | |
| 329 init_tree_ssa (cfun); | |
| 330 return 0; | |
| 331 } | |
| 332 | |
| 333 struct gimple_opt_pass pass_init_datastructures = | |
| 334 { | |
| 335 { | |
| 336 GIMPLE_PASS, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
337 "*init_datastructures", /* name */ |
| 0 | 338 NULL, /* gate */ |
| 339 execute_init_datastructures, /* execute */ | |
| 340 NULL, /* sub */ | |
| 341 NULL, /* next */ | |
| 342 0, /* static_pass_number */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
343 TV_NONE, /* tv_id */ |
| 0 | 344 PROP_cfg, /* properties_required */ |
| 345 0, /* properties_provided */ | |
| 346 0, /* properties_destroyed */ | |
| 347 0, /* todo_flags_start */ | |
| 348 0 /* todo_flags_finish */ | |
| 349 } | |
| 350 }; | |
| 351 | |
| 352 void | |
| 353 tree_lowering_passes (tree fn) | |
| 354 { | |
| 355 tree saved_current_function_decl = current_function_decl; | |
| 356 | |
| 357 current_function_decl = fn; | |
| 358 push_cfun (DECL_STRUCT_FUNCTION (fn)); | |
| 359 gimple_register_cfg_hooks (); | |
| 360 bitmap_obstack_initialize (NULL); | |
| 361 execute_pass_list (all_lowering_passes); | |
| 362 if (optimize && cgraph_global_info_ready) | |
| 363 execute_pass_list (pass_early_local_passes.pass.sub); | |
| 364 free_dominance_info (CDI_POST_DOMINATORS); | |
| 365 free_dominance_info (CDI_DOMINATORS); | |
| 366 compact_blocks (); | |
| 367 current_function_decl = saved_current_function_decl; | |
| 368 bitmap_obstack_release (NULL); | |
| 369 pop_cfun (); | |
| 370 } | |
| 371 | |
| 372 /* For functions-as-trees languages, this performs all optimization and | |
| 373 compilation for FNDECL. */ | |
| 374 | |
| 375 void | |
| 376 tree_rest_of_compilation (tree fndecl) | |
| 377 { | |
| 378 location_t saved_loc; | |
| 379 | |
| 380 timevar_push (TV_EXPAND); | |
| 381 | |
| 382 gcc_assert (cgraph_global_info_ready); | |
| 383 | |
| 384 /* Initialize the default bitmap obstack. */ | |
| 385 bitmap_obstack_initialize (NULL); | |
| 386 | |
| 387 /* Initialize the RTL code for the function. */ | |
| 388 current_function_decl = fndecl; | |
| 389 saved_loc = input_location; | |
| 390 input_location = DECL_SOURCE_LOCATION (fndecl); | |
| 391 init_function_start (fndecl); | |
| 392 | |
| 393 /* Even though we're inside a function body, we still don't want to | |
| 394 call expand_expr to calculate the size of a variable-sized array. | |
| 395 We haven't necessarily assigned RTL to all variables yet, so it's | |
| 396 not safe to try to expand expressions involving them. */ | |
| 397 cfun->dont_save_pending_sizes_p = 1; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
398 |
| 0 | 399 gimple_register_cfg_hooks (); |
| 400 | |
| 401 bitmap_obstack_initialize (®_obstack); /* FIXME, only at RTL generation*/ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
402 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
403 execute_all_ipa_transforms (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
404 |
| 0 | 405 /* Perform all tree transforms and optimizations. */ |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
406 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
407 /* Signal the start of passes. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
408 invoke_plugin_callbacks (PLUGIN_ALL_PASSES_START, NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
409 |
| 0 | 410 execute_pass_list (all_passes); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
411 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
412 /* Signal the end of passes. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
413 invoke_plugin_callbacks (PLUGIN_ALL_PASSES_END, NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
414 |
| 0 | 415 bitmap_obstack_release (®_obstack); |
| 416 | |
| 417 /* Release the default bitmap obstack. */ | |
| 418 bitmap_obstack_release (NULL); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
419 |
| 0 | 420 set_cfun (NULL); |
| 421 | |
| 422 /* If requested, warn about function definitions where the function will | |
| 423 return a value (usually of some struct or union type) which itself will | |
| 424 take up a lot of stack space. */ | |
| 425 if (warn_larger_than && !DECL_EXTERNAL (fndecl) && TREE_TYPE (fndecl)) | |
| 426 { | |
| 427 tree ret_type = TREE_TYPE (TREE_TYPE (fndecl)); | |
| 428 | |
| 429 if (ret_type && TYPE_SIZE_UNIT (ret_type) | |
| 430 && TREE_CODE (TYPE_SIZE_UNIT (ret_type)) == INTEGER_CST | |
| 431 && 0 < compare_tree_int (TYPE_SIZE_UNIT (ret_type), | |
| 432 larger_than_size)) | |
| 433 { | |
| 434 unsigned int size_as_int | |
| 435 = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ret_type)); | |
| 436 | |
| 437 if (compare_tree_int (TYPE_SIZE_UNIT (ret_type), size_as_int) == 0) | |
| 438 warning (OPT_Wlarger_than_eq, "size of return value of %q+D is %u bytes", | |
| 439 fndecl, size_as_int); | |
| 440 else | |
| 441 warning (OPT_Wlarger_than_eq, "size of return value of %q+D is larger than %wd bytes", | |
| 442 fndecl, larger_than_size); | |
| 443 } | |
| 444 } | |
| 445 | |
| 446 gimple_set_body (fndecl, NULL); | |
| 447 if (DECL_STRUCT_FUNCTION (fndecl) == 0 | |
| 448 && !cgraph_node (fndecl)->origin) | |
| 449 { | |
| 450 /* Stop pointing to the local nodes about to be freed. | |
| 451 But DECL_INITIAL must remain nonzero so we know this | |
| 452 was an actual function definition. | |
| 453 For a nested function, this is done in c_pop_function_context. | |
| 454 If rest_of_compilation set this to 0, leave it 0. */ | |
| 455 if (DECL_INITIAL (fndecl) != 0) | |
| 456 DECL_INITIAL (fndecl) = error_mark_node; | |
| 457 } | |
| 458 | |
| 459 input_location = saved_loc; | |
| 460 | |
| 461 ggc_collect (); | |
| 462 timevar_pop (TV_EXPAND); | |
| 463 } |