Mercurial > hg > CbC > CbC_gcc
annotate gcc/cgraphunit.c @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Callgraph based interprocedural optimizations. |
|
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2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
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3 2011 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Jan Hubicka |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 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 /* This module implements main driver of compilation process as well as | |
| 23 few basic interprocedural optimizers. | |
| 24 | |
| 25 The main scope of this file is to act as an interface in between | |
| 26 tree based frontends and the backend (and middle end) | |
| 27 | |
| 28 The front-end is supposed to use following functionality: | |
| 29 | |
| 30 - cgraph_finalize_function | |
| 31 | |
| 32 This function is called once front-end has parsed whole body of function | |
| 33 and it is certain that the function body nor the declaration will change. | |
| 34 | |
| 35 (There is one exception needed for implementing GCC extern inline | |
| 36 function.) | |
| 37 | |
| 38 - varpool_finalize_variable | |
| 39 | |
| 40 This function has same behavior as the above but is used for static | |
| 41 variables. | |
| 42 | |
| 43 - cgraph_finalize_compilation_unit | |
| 44 | |
| 45 This function is called once (source level) compilation unit is finalized | |
| 46 and it will no longer change. | |
| 47 | |
| 48 In the the call-graph construction and local function | |
| 49 analysis takes place here. Bodies of unreachable functions are released | |
| 50 to conserve memory usage. | |
| 51 | |
| 52 The function can be called multiple times when multiple source level | |
| 53 compilation units are combined (such as in C frontend) | |
| 54 | |
| 55 - cgraph_optimize | |
| 56 | |
| 57 In this unit-at-a-time compilation the intra procedural analysis takes | |
| 58 place here. In particular the static functions whose address is never | |
| 59 taken are marked as local. Backend can then use this information to | |
| 60 modify calling conventions, do better inlining or similar optimizations. | |
| 61 | |
| 62 - cgraph_mark_needed_node | |
| 63 - varpool_mark_needed_node | |
| 64 | |
| 65 When function or variable is referenced by some hidden way the call-graph | |
| 66 data structure must be updated accordingly by this function. | |
| 67 There should be little need to call this function and all the references | |
| 68 should be made explicit to cgraph code. At present these functions are | |
| 69 used by C++ frontend to explicitly mark the keyed methods. | |
| 70 | |
| 71 - analyze_expr callback | |
| 72 | |
| 73 This function is responsible for lowering tree nodes not understood by | |
| 74 generic code into understandable ones or alternatively marking | |
| 75 callgraph and varpool nodes referenced by the as needed. | |
| 76 | |
| 77 ??? On the tree-ssa genericizing should take place here and we will avoid | |
| 78 need for these hooks (replacing them by genericizing hook) | |
| 79 | |
| 80 Analyzing of all functions is deferred | |
| 81 to cgraph_finalize_compilation_unit and expansion into cgraph_optimize. | |
| 82 | |
| 83 In cgraph_finalize_compilation_unit the reachable functions are | |
| 84 analyzed. During analysis the call-graph edges from reachable | |
| 85 functions are constructed and their destinations are marked as | |
| 86 reachable. References to functions and variables are discovered too | |
| 87 and variables found to be needed output to the assembly file. Via | |
| 88 mark_referenced call in assemble_variable functions referenced by | |
| 89 static variables are noticed too. | |
| 90 | |
| 91 The intra-procedural information is produced and its existence | |
| 92 indicated by global_info_ready. Once this flag is set it is impossible | |
| 93 to change function from !reachable to reachable and thus | |
| 94 assemble_variable no longer call mark_referenced. | |
| 95 | |
| 96 Finally the call-graph is topologically sorted and all reachable functions | |
| 97 that has not been completely inlined or are not external are output. | |
| 98 | |
| 99 ??? It is possible that reference to function or variable is optimized | |
| 100 out. We can not deal with this nicely because topological order is not | |
| 101 suitable for it. For tree-ssa we may consider another pass doing | |
| 102 optimization and re-discovering reachable functions. | |
| 103 | |
| 104 ??? Reorganize code so variables are output very last and only if they | |
| 105 really has been referenced by produced code, so we catch more cases | |
| 106 where reference has been optimized out. */ | |
| 107 | |
| 108 | |
| 109 #include "config.h" | |
| 110 #include "system.h" | |
| 111 #include "coretypes.h" | |
| 112 #include "tm.h" | |
| 113 #include "tree.h" | |
| 114 #include "rtl.h" | |
| 115 #include "tree-flow.h" | |
| 116 #include "tree-inline.h" | |
| 117 #include "langhooks.h" | |
| 118 #include "pointer-set.h" | |
| 119 #include "toplev.h" | |
| 120 #include "flags.h" | |
| 121 #include "ggc.h" | |
| 122 #include "debug.h" | |
| 123 #include "target.h" | |
| 124 #include "cgraph.h" | |
| 125 #include "diagnostic.h" | |
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126 #include "tree-pretty-print.h" |
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127 #include "gimple-pretty-print.h" |
| 0 | 128 #include "timevar.h" |
| 129 #include "params.h" | |
| 130 #include "fibheap.h" | |
| 131 #include "intl.h" | |
| 132 #include "function.h" | |
| 133 #include "ipa-prop.h" | |
| 134 #include "gimple.h" | |
| 135 #include "tree-iterator.h" | |
| 136 #include "tree-pass.h" | |
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137 #include "tree-dump.h" |
| 0 | 138 #include "output.h" |
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139 #include "coverage.h" |
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140 #include "plugin.h" |
| 0 | 141 |
| 142 static void cgraph_expand_all_functions (void); | |
| 143 static void cgraph_mark_functions_to_output (void); | |
| 144 static void cgraph_expand_function (struct cgraph_node *); | |
| 145 static void cgraph_output_pending_asms (void); | |
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146 static void cgraph_analyze_function (struct cgraph_node *); |
| 0 | 147 |
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148 FILE *cgraph_dump_file; |
| 0 | 149 |
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150 /* Used for vtable lookup in thunk adjusting. */ |
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151 static GTY (()) tree vtable_entry_type; |
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152 |
| 0 | 153 /* Determine if function DECL is needed. That is, visible to something |
| 154 either outside this translation unit, something magic in the system | |
| 155 configury. */ | |
| 156 | |
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157 bool |
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158 cgraph_decide_is_function_needed (struct cgraph_node *node, tree decl) |
| 0 | 159 { |
| 160 /* If the user told us it is used, then it must be so. */ | |
| 161 if (node->local.externally_visible) | |
| 162 return true; | |
| 163 | |
| 164 /* ??? If the assembler name is set by hand, it is possible to assemble | |
| 165 the name later after finalizing the function and the fact is noticed | |
| 166 in assemble_name then. This is arguably a bug. */ | |
| 167 if (DECL_ASSEMBLER_NAME_SET_P (decl) | |
| 168 && TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
| 169 return true; | |
| 170 | |
| 171 /* With -fkeep-inline-functions we are keeping all inline functions except | |
| 172 for extern inline ones. */ | |
| 173 if (flag_keep_inline_functions | |
| 174 && DECL_DECLARED_INLINE_P (decl) | |
| 175 && !DECL_EXTERNAL (decl) | |
| 176 && !lookup_attribute ("always_inline", DECL_ATTRIBUTES (decl))) | |
| 177 return true; | |
| 178 | |
| 179 /* If we decided it was needed before, but at the time we didn't have | |
| 180 the body of the function available, then it's still needed. We have | |
| 181 to go back and re-check its dependencies now. */ | |
| 182 if (node->needed) | |
| 183 return true; | |
| 184 | |
| 185 /* Externally visible functions must be output. The exception is | |
| 186 COMDAT functions that must be output only when they are needed. | |
| 187 | |
| 188 When not optimizing, also output the static functions. (see | |
| 189 PR24561), but don't do so for always_inline functions, functions | |
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190 declared inline and nested functions. These were optimized out |
| 0 | 191 in the original implementation and it is unclear whether we want |
| 192 to change the behavior here. */ | |
| 193 if (((TREE_PUBLIC (decl) | |
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194 || (!optimize |
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195 && !node->local.disregard_inline_limits |
| 0 | 196 && !DECL_DECLARED_INLINE_P (decl) |
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197 && !(DECL_CONTEXT (decl) |
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198 && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL))) |
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199 && !flag_whole_program |
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200 && !flag_lto) |
| 0 | 201 && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) |
| 202 return true; | |
| 203 | |
| 204 return false; | |
| 205 } | |
| 206 | |
| 207 /* Process CGRAPH_NEW_FUNCTIONS and perform actions necessary to add these | |
| 208 functions into callgraph in a way so they look like ordinary reachable | |
| 209 functions inserted into callgraph already at construction time. */ | |
| 210 | |
| 211 bool | |
| 212 cgraph_process_new_functions (void) | |
| 213 { | |
| 214 bool output = false; | |
| 215 tree fndecl; | |
| 216 struct cgraph_node *node; | |
| 217 | |
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218 varpool_analyze_pending_decls (); |
| 0 | 219 /* Note that this queue may grow as its being processed, as the new |
| 220 functions may generate new ones. */ | |
| 221 while (cgraph_new_nodes) | |
| 222 { | |
| 223 node = cgraph_new_nodes; | |
| 224 fndecl = node->decl; | |
| 225 cgraph_new_nodes = cgraph_new_nodes->next_needed; | |
| 226 switch (cgraph_state) | |
| 227 { | |
| 228 case CGRAPH_STATE_CONSTRUCTION: | |
| 229 /* At construction time we just need to finalize function and move | |
| 230 it into reachable functions list. */ | |
| 231 | |
| 232 node->next_needed = NULL; | |
| 233 cgraph_finalize_function (fndecl, false); | |
| 234 cgraph_mark_reachable_node (node); | |
| 235 output = true; | |
| 236 break; | |
| 237 | |
| 238 case CGRAPH_STATE_IPA: | |
| 239 case CGRAPH_STATE_IPA_SSA: | |
| 240 /* When IPA optimization already started, do all essential | |
| 241 transformations that has been already performed on the whole | |
| 242 cgraph but not on this function. */ | |
| 243 | |
| 244 gimple_register_cfg_hooks (); | |
| 245 if (!node->analyzed) | |
| 246 cgraph_analyze_function (node); | |
| 247 push_cfun (DECL_STRUCT_FUNCTION (fndecl)); | |
| 248 current_function_decl = fndecl; | |
| 249 if ((cgraph_state == CGRAPH_STATE_IPA_SSA | |
| 250 && !gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl))) | |
| 251 /* When not optimizing, be sure we run early local passes anyway | |
| 252 to expand OMP. */ | |
| 253 || !optimize) | |
| 254 execute_pass_list (pass_early_local_passes.pass.sub); | |
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255 else |
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256 compute_inline_parameters (node); |
| 0 | 257 free_dominance_info (CDI_POST_DOMINATORS); |
| 258 free_dominance_info (CDI_DOMINATORS); | |
| 259 pop_cfun (); | |
| 260 current_function_decl = NULL; | |
| 261 break; | |
| 262 | |
| 263 case CGRAPH_STATE_EXPANSION: | |
| 264 /* Functions created during expansion shall be compiled | |
| 265 directly. */ | |
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266 node->process = 0; |
| 0 | 267 cgraph_expand_function (node); |
| 268 break; | |
| 269 | |
| 270 default: | |
| 271 gcc_unreachable (); | |
| 272 break; | |
| 273 } | |
| 274 cgraph_call_function_insertion_hooks (node); | |
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275 varpool_analyze_pending_decls (); |
| 0 | 276 } |
| 277 return output; | |
| 278 } | |
| 279 | |
| 280 /* As an GCC extension we allow redefinition of the function. The | |
| 281 semantics when both copies of bodies differ is not well defined. | |
| 282 We replace the old body with new body so in unit at a time mode | |
| 283 we always use new body, while in normal mode we may end up with | |
| 284 old body inlined into some functions and new body expanded and | |
| 285 inlined in others. | |
| 286 | |
| 287 ??? It may make more sense to use one body for inlining and other | |
| 288 body for expanding the function but this is difficult to do. */ | |
| 289 | |
| 290 static void | |
| 291 cgraph_reset_node (struct cgraph_node *node) | |
| 292 { | |
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293 /* If node->process is set, then we have already begun whole-unit analysis. |
| 0 | 294 This is *not* testing for whether we've already emitted the function. |
| 295 That case can be sort-of legitimately seen with real function redefinition | |
| 296 errors. I would argue that the front end should never present us with | |
| 297 such a case, but don't enforce that for now. */ | |
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298 gcc_assert (!node->process); |
| 0 | 299 |
| 300 /* Reset our data structures so we can analyze the function again. */ | |
| 301 memset (&node->local, 0, sizeof (node->local)); | |
| 302 memset (&node->global, 0, sizeof (node->global)); | |
| 303 memset (&node->rtl, 0, sizeof (node->rtl)); | |
| 304 node->analyzed = false; | |
| 305 node->local.redefined_extern_inline = true; | |
| 306 node->local.finalized = false; | |
| 307 | |
| 308 cgraph_node_remove_callees (node); | |
| 309 | |
| 310 /* We may need to re-queue the node for assembling in case | |
| 311 we already proceeded it and ignored as not needed or got | |
| 312 a re-declaration in IMA mode. */ | |
| 313 if (node->reachable) | |
| 314 { | |
| 315 struct cgraph_node *n; | |
| 316 | |
| 317 for (n = cgraph_nodes_queue; n; n = n->next_needed) | |
| 318 if (n == node) | |
| 319 break; | |
| 320 if (!n) | |
| 321 node->reachable = 0; | |
| 322 } | |
| 323 } | |
| 324 | |
| 325 static void | |
| 326 cgraph_lower_function (struct cgraph_node *node) | |
| 327 { | |
| 328 if (node->lowered) | |
| 329 return; | |
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330 |
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331 if (node->nested) |
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332 lower_nested_functions (node->decl); |
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333 gcc_assert (!node->nested); |
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334 |
| 0 | 335 tree_lowering_passes (node->decl); |
| 336 node->lowered = true; | |
| 337 } | |
| 338 | |
| 339 /* DECL has been parsed. Take it, queue it, compile it at the whim of the | |
| 340 logic in effect. If NESTED is true, then our caller cannot stand to have | |
| 341 the garbage collector run at the moment. We would need to either create | |
| 342 a new GC context, or just not compile right now. */ | |
| 343 | |
| 344 void | |
| 345 cgraph_finalize_function (tree decl, bool nested) | |
| 346 { | |
| 347 struct cgraph_node *node = cgraph_node (decl); | |
| 348 | |
| 349 if (node->local.finalized) | |
| 350 cgraph_reset_node (node); | |
| 351 | |
| 352 node->pid = cgraph_max_pid ++; | |
| 353 notice_global_symbol (decl); | |
| 354 node->local.finalized = true; | |
| 355 node->lowered = DECL_STRUCT_FUNCTION (decl)->cfg != NULL; | |
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356 node->finalized_by_frontend = true; |
| 0 | 357 |
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358 if (cgraph_decide_is_function_needed (node, decl)) |
| 0 | 359 cgraph_mark_needed_node (node); |
| 360 | |
| 361 /* Since we reclaim unreachable nodes at the end of every language | |
| 362 level unit, we need to be conservative about possible entry points | |
| 363 there. */ | |
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364 if ((TREE_PUBLIC (decl) && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) |
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365 || DECL_STATIC_CONSTRUCTOR (decl) |
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366 || DECL_STATIC_DESTRUCTOR (decl) |
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367 /* COMDAT virtual functions may be referenced by vtable from |
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368 other compilation unit. Still we want to devirtualize calls |
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369 to those so we need to analyze them. |
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370 FIXME: We should introduce may edges for this purpose and update |
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371 their handling in unreachable function removal and inliner too. */ |
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372 || (DECL_VIRTUAL_P (decl) && (DECL_COMDAT (decl) || DECL_EXTERNAL (decl)))) |
| 0 | 373 cgraph_mark_reachable_node (node); |
| 374 | |
| 375 /* If we've not yet emitted decl, tell the debug info about it. */ | |
| 376 if (!TREE_ASM_WRITTEN (decl)) | |
| 377 (*debug_hooks->deferred_inline_function) (decl); | |
| 378 | |
| 379 /* Possibly warn about unused parameters. */ | |
| 380 if (warn_unused_parameter) | |
| 381 do_warn_unused_parameter (decl); | |
| 382 | |
| 383 if (!nested) | |
| 384 ggc_collect (); | |
| 385 } | |
| 386 | |
| 387 /* C99 extern inline keywords allow changing of declaration after function | |
| 388 has been finalized. We need to re-decide if we want to mark the function as | |
| 389 needed then. */ | |
| 390 | |
| 391 void | |
| 392 cgraph_mark_if_needed (tree decl) | |
| 393 { | |
| 394 struct cgraph_node *node = cgraph_node (decl); | |
|
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395 if (node->local.finalized && cgraph_decide_is_function_needed (node, decl)) |
| 0 | 396 cgraph_mark_needed_node (node); |
| 397 } | |
| 398 | |
|
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399 /* Return TRUE if NODE2 is equivalent to NODE or its clone. */ |
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400 static bool |
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401 clone_of_p (struct cgraph_node *node, struct cgraph_node *node2) |
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402 { |
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403 while (node != node2 && node2) |
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404 node2 = node2->clone_of; |
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405 return node2 != NULL; |
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406 } |
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407 |
|
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408 /* Verify edge E count and frequency. */ |
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409 |
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410 static bool |
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411 verify_edge_count_and_frequency (struct cgraph_edge *e) |
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412 { |
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413 bool error_found = false; |
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414 if (e->count < 0) |
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415 { |
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416 error ("caller edge count is negative"); |
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417 error_found = true; |
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418 } |
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419 if (e->frequency < 0) |
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420 { |
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421 error ("caller edge frequency is negative"); |
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422 error_found = true; |
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423 } |
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424 if (e->frequency > CGRAPH_FREQ_MAX) |
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425 { |
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426 error ("caller edge frequency is too large"); |
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427 error_found = true; |
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428 } |
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429 if (gimple_has_body_p (e->caller->decl) |
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430 && !e->caller->global.inlined_to |
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431 && (e->frequency |
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432 != compute_call_stmt_bb_frequency (e->caller->decl, |
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433 gimple_bb (e->call_stmt)))) |
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434 { |
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435 error ("caller edge frequency %i does not match BB frequency %i", |
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436 e->frequency, |
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437 compute_call_stmt_bb_frequency (e->caller->decl, |
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438 gimple_bb (e->call_stmt))); |
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439 error_found = true; |
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440 } |
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441 return error_found; |
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442 } |
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443 |
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444 /* Switch to THIS_CFUN if needed and print STMT to stderr. */ |
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445 static void |
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446 cgraph_debug_gimple_stmt (struct function *this_cfun, gimple stmt) |
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447 { |
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448 /* debug_gimple_stmt needs correct cfun */ |
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449 if (cfun != this_cfun) |
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450 set_cfun (this_cfun); |
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451 debug_gimple_stmt (stmt); |
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452 } |
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453 |
| 0 | 454 /* Verify cgraph nodes of given cgraph node. */ |
|
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455 DEBUG_FUNCTION void |
| 0 | 456 verify_cgraph_node (struct cgraph_node *node) |
| 457 { | |
| 458 struct cgraph_edge *e; | |
| 459 struct function *this_cfun = DECL_STRUCT_FUNCTION (node->decl); | |
| 460 basic_block this_block; | |
| 461 gimple_stmt_iterator gsi; | |
| 462 bool error_found = false; | |
| 463 | |
|
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464 if (seen_error ()) |
| 0 | 465 return; |
| 466 | |
| 467 timevar_push (TV_CGRAPH_VERIFY); | |
| 468 for (e = node->callees; e; e = e->next_callee) | |
| 469 if (e->aux) | |
| 470 { | |
| 471 error ("aux field set for edge %s->%s", | |
|
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472 identifier_to_locale (cgraph_node_name (e->caller)), |
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473 identifier_to_locale (cgraph_node_name (e->callee))); |
| 0 | 474 error_found = true; |
| 475 } | |
| 476 if (node->count < 0) | |
| 477 { | |
|
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478 error ("execution count is negative"); |
| 0 | 479 error_found = true; |
| 480 } | |
|
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481 if (node->global.inlined_to && node->local.externally_visible) |
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482 { |
|
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483 error ("externally visible inline clone"); |
|
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484 error_found = true; |
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485 } |
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486 if (node->global.inlined_to && node->address_taken) |
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487 { |
|
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488 error ("inline clone with address taken"); |
|
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489 error_found = true; |
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490 } |
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491 if (node->global.inlined_to && node->needed) |
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492 { |
|
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493 error ("inline clone is needed"); |
|
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494 error_found = true; |
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495 } |
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496 for (e = node->indirect_calls; e; e = e->next_callee) |
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497 { |
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498 if (e->aux) |
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499 { |
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500 error ("aux field set for indirect edge from %s", |
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501 identifier_to_locale (cgraph_node_name (e->caller))); |
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changeset
|
502 error_found = true; |
|
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503 } |
|
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504 if (!e->indirect_unknown_callee |
|
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|
505 || !e->indirect_info) |
|
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diff
changeset
|
506 { |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
507 error ("An indirect edge from %s is not marked as indirect or has " |
|
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508 "associated indirect_info, the corresponding statement is: ", |
|
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509 identifier_to_locale (cgraph_node_name (e->caller))); |
|
67
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|
510 cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
|
63
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511 error_found = true; |
|
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|
512 } |
|
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parents:
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diff
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513 } |
| 0 | 514 for (e = node->callers; e; e = e->next_caller) |
| 515 { | |
|
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|
516 if (verify_edge_count_and_frequency (e)) |
|
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|
517 error_found = true; |
| 0 | 518 if (!e->inline_failed) |
| 519 { | |
| 520 if (node->global.inlined_to | |
| 521 != (e->caller->global.inlined_to | |
| 522 ? e->caller->global.inlined_to : e->caller)) | |
| 523 { | |
| 524 error ("inlined_to pointer is wrong"); | |
| 525 error_found = true; | |
| 526 } | |
| 527 if (node->callers->next_caller) | |
| 528 { | |
| 529 error ("multiple inline callers"); | |
| 530 error_found = true; | |
| 531 } | |
| 532 } | |
| 533 else | |
| 534 if (node->global.inlined_to) | |
| 535 { | |
| 536 error ("inlined_to pointer set for noninline callers"); | |
| 537 error_found = true; | |
| 538 } | |
| 539 } | |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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|
540 for (e = node->indirect_calls; e; e = e->next_callee) |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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|
541 if (verify_edge_count_and_frequency (e)) |
|
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parents:
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diff
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|
542 error_found = true; |
| 0 | 543 if (!node->callers && node->global.inlined_to) |
| 544 { | |
| 545 error ("inlined_to pointer is set but no predecessors found"); | |
| 546 error_found = true; | |
| 547 } | |
| 548 if (node->global.inlined_to == node) | |
| 549 { | |
| 550 error ("inlined_to pointer refers to itself"); | |
| 551 error_found = true; | |
| 552 } | |
| 553 | |
|
67
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|
554 if (!cgraph_get_node (node->decl)) |
| 0 | 555 { |
| 556 error ("node not found in cgraph_hash"); | |
| 557 error_found = true; | |
| 558 } | |
| 559 | |
|
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|
560 if (node->clone_of) |
|
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561 { |
|
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562 struct cgraph_node *n; |
|
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563 for (n = node->clone_of->clones; n; n = n->next_sibling_clone) |
|
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update it from 4.4.3 to 4.5.0
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564 if (n == node) |
|
77e2b8dfacca
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parents:
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diff
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|
565 break; |
|
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parents:
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|
566 if (!n) |
|
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diff
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567 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
568 error ("node has wrong clone_of"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
569 error_found = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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|
570 } |
|
77e2b8dfacca
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|
571 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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|
572 if (node->clones) |
|
77e2b8dfacca
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parents:
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diff
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|
573 { |
|
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update it from 4.4.3 to 4.5.0
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diff
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|
574 struct cgraph_node *n; |
|
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update it from 4.4.3 to 4.5.0
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parents:
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|
575 for (n = node->clones; n; n = n->next_sibling_clone) |
|
77e2b8dfacca
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parents:
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diff
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|
576 if (n->clone_of != node) |
|
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diff
changeset
|
577 break; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
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|
578 if (n) |
|
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diff
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|
579 { |
|
77e2b8dfacca
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diff
changeset
|
580 error ("node has wrong clone list"); |
|
77e2b8dfacca
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|
581 error_found = true; |
|
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|
582 } |
|
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|
583 } |
|
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584 if ((node->prev_sibling_clone || node->next_sibling_clone) && !node->clone_of) |
|
77e2b8dfacca
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|
585 { |
|
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diff
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|
586 error ("node is in clone list but it is not clone"); |
|
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
587 error_found = true; |
|
77e2b8dfacca
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parents:
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diff
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|
588 } |
|
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589 if (!node->prev_sibling_clone && node->clone_of && node->clone_of->clones != node) |
|
77e2b8dfacca
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diff
changeset
|
590 { |
|
77e2b8dfacca
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parents:
36
diff
changeset
|
591 error ("node has wrong prev_clone pointer"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
592 error_found = true; |
|
77e2b8dfacca
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diff
changeset
|
593 } |
|
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diff
changeset
|
594 if (node->prev_sibling_clone && node->prev_sibling_clone->next_sibling_clone != node) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
595 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
596 error ("double linked list of clones corrupted"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
597 error_found = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
598 } |
|
63
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|
599 if (node->same_comdat_group) |
|
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diff
changeset
|
600 { |
|
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diff
changeset
|
601 struct cgraph_node *n = node->same_comdat_group; |
|
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|
602 |
|
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diff
changeset
|
603 if (!DECL_ONE_ONLY (node->decl)) |
|
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diff
changeset
|
604 { |
|
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diff
changeset
|
605 error ("non-DECL_ONE_ONLY node in a same_comdat_group list"); |
|
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changeset
|
606 error_found = true; |
|
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changeset
|
607 } |
|
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diff
changeset
|
608 if (n == node) |
|
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changeset
|
609 { |
|
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diff
changeset
|
610 error ("node is alone in a comdat group"); |
|
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diff
changeset
|
611 error_found = true; |
|
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|
612 } |
|
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changeset
|
613 do |
|
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diff
changeset
|
614 { |
|
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diff
changeset
|
615 if (!n->same_comdat_group) |
|
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changeset
|
616 { |
|
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diff
changeset
|
617 error ("same_comdat_group is not a circular list"); |
|
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changeset
|
618 error_found = true; |
|
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|
619 break; |
|
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changeset
|
620 } |
|
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changeset
|
621 n = n->same_comdat_group; |
|
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changeset
|
622 } |
|
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changeset
|
623 while (n != node); |
|
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changeset
|
624 } |
|
55
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diff
changeset
|
625 |
|
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update it from 4.4.3 to 4.5.0
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|
626 if (node->analyzed && gimple_has_body_p (node->decl) |
| 0 | 627 && !TREE_ASM_WRITTEN (node->decl) |
|
55
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|
628 && (!DECL_EXTERNAL (node->decl) || node->global.inlined_to) |
|
77e2b8dfacca
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|
629 && !flag_wpa) |
| 0 | 630 { |
| 631 if (this_cfun->cfg) | |
| 632 { | |
| 633 /* The nodes we're interested in are never shared, so walk | |
| 634 the tree ignoring duplicates. */ | |
| 635 struct pointer_set_t *visited_nodes = pointer_set_create (); | |
| 636 /* Reach the trees by walking over the CFG, and note the | |
| 637 enclosing basic-blocks in the call edges. */ | |
| 638 FOR_EACH_BB_FN (this_block, this_cfun) | |
| 639 for (gsi = gsi_start_bb (this_block); | |
| 640 !gsi_end_p (gsi); | |
| 641 gsi_next (&gsi)) | |
| 642 { | |
| 643 gimple stmt = gsi_stmt (gsi); | |
|
63
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|
644 if (is_gimple_call (stmt)) |
| 0 | 645 { |
| 646 struct cgraph_edge *e = cgraph_edge (node, stmt); | |
|
63
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|
647 tree decl = gimple_call_fndecl (stmt); |
| 0 | 648 if (e) |
| 649 { | |
| 650 if (e->aux) | |
| 651 { | |
| 652 error ("shared call_stmt:"); | |
|
67
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|
653 cgraph_debug_gimple_stmt (this_cfun, stmt); |
| 0 | 654 error_found = true; |
| 655 } | |
|
63
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656 if (!e->indirect_unknown_callee) |
|
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657 { |
|
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658 struct cgraph_node *n; |
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659 |
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660 if (e->callee->same_body_alias) |
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661 { |
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662 error ("edge points to same body alias:"); |
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663 debug_tree (e->callee->decl); |
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664 error_found = true; |
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665 } |
|
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666 else if (!e->callee->global.inlined_to |
|
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667 && decl |
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668 && cgraph_get_node (decl) |
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669 && (e->callee->former_clone_of |
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670 != cgraph_get_node (decl)->decl) |
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671 && !clone_of_p (cgraph_node (decl), |
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672 e->callee)) |
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673 { |
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674 error ("edge points to wrong declaration:"); |
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675 debug_tree (e->callee->decl); |
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676 fprintf (stderr," Instead of:"); |
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677 debug_tree (decl); |
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678 error_found = true; |
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679 } |
|
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680 else if (decl |
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681 && (n = cgraph_get_node_or_alias (decl)) |
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682 && (n->same_body_alias |
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683 && n->thunk.thunk_p)) |
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684 { |
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685 error ("a call to thunk improperly represented " |
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686 "in the call graph:"); |
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687 cgraph_debug_gimple_stmt (this_cfun, stmt); |
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688 error_found = true; |
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689 } |
|
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690 } |
|
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691 else if (decl) |
| 0 | 692 { |
|
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693 error ("an indirect edge with unknown callee " |
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694 "corresponding to a call_stmt with " |
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695 "a known declaration:"); |
|
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696 error_found = true; |
|
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697 cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
| 0 | 698 } |
| 699 e->aux = (void *)1; | |
| 700 } | |
|
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701 else if (decl) |
| 0 | 702 { |
| 703 error ("missing callgraph edge for call stmt:"); | |
|
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704 cgraph_debug_gimple_stmt (this_cfun, stmt); |
| 0 | 705 error_found = true; |
| 706 } | |
| 707 } | |
| 708 } | |
| 709 pointer_set_destroy (visited_nodes); | |
| 710 } | |
| 711 else | |
| 712 /* No CFG available?! */ | |
| 713 gcc_unreachable (); | |
| 714 | |
| 715 for (e = node->callees; e; e = e->next_callee) | |
| 716 { | |
|
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717 if (!e->aux) |
| 0 | 718 { |
| 719 error ("edge %s->%s has no corresponding call_stmt", | |
|
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720 identifier_to_locale (cgraph_node_name (e->caller)), |
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721 identifier_to_locale (cgraph_node_name (e->callee))); |
|
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722 cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
| 0 | 723 error_found = true; |
| 724 } | |
| 725 e->aux = 0; | |
| 726 } | |
|
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727 for (e = node->indirect_calls; e; e = e->next_callee) |
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728 { |
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729 if (!e->aux) |
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730 { |
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731 error ("an indirect edge from %s has no corresponding call_stmt", |
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732 identifier_to_locale (cgraph_node_name (e->caller))); |
|
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733 cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
|
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734 error_found = true; |
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735 } |
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736 e->aux = 0; |
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737 } |
| 0 | 738 } |
| 739 if (error_found) | |
| 740 { | |
| 741 dump_cgraph_node (stderr, node); | |
| 742 internal_error ("verify_cgraph_node failed"); | |
| 743 } | |
| 744 timevar_pop (TV_CGRAPH_VERIFY); | |
| 745 } | |
| 746 | |
| 747 /* Verify whole cgraph structure. */ | |
|
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748 DEBUG_FUNCTION void |
| 0 | 749 verify_cgraph (void) |
| 750 { | |
| 751 struct cgraph_node *node; | |
| 752 | |
|
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753 if (seen_error ()) |
| 0 | 754 return; |
| 755 | |
| 756 for (node = cgraph_nodes; node; node = node->next) | |
| 757 verify_cgraph_node (node); | |
| 758 } | |
| 759 | |
| 760 /* Output all asm statements we have stored up to be output. */ | |
| 761 | |
| 762 static void | |
| 763 cgraph_output_pending_asms (void) | |
| 764 { | |
| 765 struct cgraph_asm_node *can; | |
| 766 | |
|
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767 if (seen_error ()) |
| 0 | 768 return; |
| 769 | |
| 770 for (can = cgraph_asm_nodes; can; can = can->next) | |
| 771 assemble_asm (can->asm_str); | |
| 772 cgraph_asm_nodes = NULL; | |
| 773 } | |
| 774 | |
| 775 /* Analyze the function scheduled to be output. */ | |
|
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776 static void |
| 0 | 777 cgraph_analyze_function (struct cgraph_node *node) |
| 778 { | |
|
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779 tree save = current_function_decl; |
| 0 | 780 tree decl = node->decl; |
| 781 | |
| 782 current_function_decl = decl; | |
| 783 push_cfun (DECL_STRUCT_FUNCTION (decl)); | |
|
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|
784 |
|
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785 assign_assembler_name_if_neeeded (node->decl); |
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786 |
|
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787 /* disregard_inline_limits affects topological order of the early optimization, |
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788 so we need to compute it ahead of rest of inline parameters. */ |
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789 node->local.disregard_inline_limits |
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790 = DECL_DISREGARD_INLINE_LIMITS (node->decl); |
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|
791 |
|
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792 /* Make sure to gimplify bodies only once. During analyzing a |
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793 function we lower it, which will require gimplified nested |
|
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794 functions, so we can end up here with an already gimplified |
|
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795 body. */ |
|
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796 if (!gimple_body (decl)) |
|
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797 gimplify_function_tree (decl); |
|
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798 dump_function (TDI_generic, decl); |
|
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799 |
| 0 | 800 cgraph_lower_function (node); |
| 801 node->analyzed = true; | |
| 802 | |
| 803 pop_cfun (); | |
|
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|
804 current_function_decl = save; |
| 0 | 805 } |
| 806 | |
|
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|
807 /* Process attributes common for vars and functions. */ |
|
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|
808 |
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809 static void |
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|
810 process_common_attributes (tree decl) |
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|
811 { |
|
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812 tree weakref = lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)); |
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813 |
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814 if (weakref && !lookup_attribute ("alias", DECL_ATTRIBUTES (decl))) |
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815 { |
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816 warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, |
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817 "%<weakref%> attribute should be accompanied with" |
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818 " an %<alias%> attribute"); |
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819 DECL_WEAK (decl) = 0; |
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820 DECL_ATTRIBUTES (decl) = remove_attribute ("weakref", |
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821 DECL_ATTRIBUTES (decl)); |
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822 } |
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823 } |
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824 |
| 0 | 825 /* Look for externally_visible and used attributes and mark cgraph nodes |
| 826 accordingly. | |
| 827 | |
| 828 We cannot mark the nodes at the point the attributes are processed (in | |
| 829 handle_*_attribute) because the copy of the declarations available at that | |
| 830 point may not be canonical. For example, in: | |
| 831 | |
| 832 void f(); | |
| 833 void f() __attribute__((used)); | |
| 834 | |
| 835 the declaration we see in handle_used_attribute will be the second | |
| 836 declaration -- but the front end will subsequently merge that declaration | |
| 837 with the original declaration and discard the second declaration. | |
| 838 | |
| 839 Furthermore, we can't mark these nodes in cgraph_finalize_function because: | |
| 840 | |
| 841 void f() {} | |
| 842 void f() __attribute__((externally_visible)); | |
| 843 | |
| 844 is valid. | |
| 845 | |
| 846 So, we walk the nodes at the end of the translation unit, applying the | |
| 847 attributes at that point. */ | |
| 848 | |
| 849 static void | |
| 850 process_function_and_variable_attributes (struct cgraph_node *first, | |
| 851 struct varpool_node *first_var) | |
| 852 { | |
| 853 struct cgraph_node *node; | |
| 854 struct varpool_node *vnode; | |
| 855 | |
| 856 for (node = cgraph_nodes; node != first; node = node->next) | |
| 857 { | |
| 858 tree decl = node->decl; | |
|
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859 if (DECL_PRESERVE_P (decl)) |
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860 cgraph_mark_needed_node (node); |
|
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861 if (TARGET_DLLIMPORT_DECL_ATTRIBUTES |
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862 && lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)) |
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863 && TREE_PUBLIC (node->decl)) |
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864 { |
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865 if (node->local.finalized) |
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866 cgraph_mark_needed_node (node); |
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867 } |
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868 else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl))) |
| 0 | 869 { |
| 870 if (! TREE_PUBLIC (node->decl)) | |
|
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871 warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes, |
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872 "%<externally_visible%>" |
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873 " attribute have effect only on public objects"); |
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874 else if (node->local.finalized) |
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875 cgraph_mark_needed_node (node); |
| 0 | 876 } |
|
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877 if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)) |
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878 && node->local.finalized) |
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879 { |
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880 warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes, |
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881 "%<weakref%> attribute ignored" |
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882 " because function is defined"); |
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883 DECL_WEAK (decl) = 0; |
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884 DECL_ATTRIBUTES (decl) = remove_attribute ("weakref", |
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885 DECL_ATTRIBUTES (decl)); |
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886 } |
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887 process_common_attributes (decl); |
| 0 | 888 } |
| 889 for (vnode = varpool_nodes; vnode != first_var; vnode = vnode->next) | |
| 890 { | |
| 891 tree decl = vnode->decl; | |
|
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892 if (DECL_PRESERVE_P (decl)) |
| 0 | 893 { |
|
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894 vnode->force_output = true; |
| 0 | 895 if (vnode->finalized) |
| 896 varpool_mark_needed_node (vnode); | |
| 897 } | |
|
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898 if (TARGET_DLLIMPORT_DECL_ATTRIBUTES |
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899 && lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)) |
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900 && TREE_PUBLIC (vnode->decl)) |
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901 { |
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902 if (vnode->finalized) |
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903 varpool_mark_needed_node (vnode); |
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904 } |
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905 else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl))) |
| 0 | 906 { |
| 907 if (! TREE_PUBLIC (vnode->decl)) | |
|
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908 warning_at (DECL_SOURCE_LOCATION (vnode->decl), OPT_Wattributes, |
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909 "%<externally_visible%>" |
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910 " attribute have effect only on public objects"); |
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911 else if (vnode->finalized) |
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912 varpool_mark_needed_node (vnode); |
| 0 | 913 } |
|
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914 if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)) |
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915 && vnode->finalized |
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916 && DECL_INITIAL (decl)) |
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917 { |
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918 warning_at (DECL_SOURCE_LOCATION (vnode->decl), OPT_Wattributes, |
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919 "%<weakref%> attribute ignored" |
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920 " because variable is initialized"); |
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921 DECL_WEAK (decl) = 0; |
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922 DECL_ATTRIBUTES (decl) = remove_attribute ("weakref", |
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923 DECL_ATTRIBUTES (decl)); |
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924 } |
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925 process_common_attributes (decl); |
| 0 | 926 } |
| 927 } | |
| 928 | |
| 929 /* Process CGRAPH_NODES_NEEDED queue, analyze each function (and transitively | |
| 930 each reachable functions) and build cgraph. | |
| 931 The function can be called multiple times after inserting new nodes | |
| 932 into beginning of queue. Just the new part of queue is re-scanned then. */ | |
| 933 | |
| 934 static void | |
| 935 cgraph_analyze_functions (void) | |
| 936 { | |
| 937 /* Keep track of already processed nodes when called multiple times for | |
| 938 intermodule optimization. */ | |
| 939 static struct cgraph_node *first_analyzed; | |
| 940 struct cgraph_node *first_processed = first_analyzed; | |
| 941 static struct varpool_node *first_analyzed_var; | |
| 942 struct cgraph_node *node, *next; | |
| 943 | |
|
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944 bitmap_obstack_initialize (NULL); |
| 0 | 945 process_function_and_variable_attributes (first_processed, |
| 946 first_analyzed_var); | |
| 947 first_processed = cgraph_nodes; | |
| 948 first_analyzed_var = varpool_nodes; | |
| 949 varpool_analyze_pending_decls (); | |
| 950 if (cgraph_dump_file) | |
| 951 { | |
| 952 fprintf (cgraph_dump_file, "Initial entry points:"); | |
| 953 for (node = cgraph_nodes; node != first_analyzed; node = node->next) | |
| 954 if (node->needed) | |
| 955 fprintf (cgraph_dump_file, " %s", cgraph_node_name (node)); | |
| 956 fprintf (cgraph_dump_file, "\n"); | |
| 957 } | |
| 958 cgraph_process_new_functions (); | |
| 959 | |
| 960 /* Propagate reachability flag and lower representation of all reachable | |
| 961 functions. In the future, lowering will introduce new functions and | |
| 962 new entry points on the way (by template instantiation and virtual | |
| 963 method table generation for instance). */ | |
| 964 while (cgraph_nodes_queue) | |
| 965 { | |
| 966 struct cgraph_edge *edge; | |
| 967 tree decl = cgraph_nodes_queue->decl; | |
| 968 | |
| 969 node = cgraph_nodes_queue; | |
| 970 cgraph_nodes_queue = cgraph_nodes_queue->next_needed; | |
| 971 node->next_needed = NULL; | |
| 972 | |
| 973 /* ??? It is possible to create extern inline function and later using | |
| 974 weak alias attribute to kill its body. See | |
| 975 gcc.c-torture/compile/20011119-1.c */ | |
| 976 if (!DECL_STRUCT_FUNCTION (decl)) | |
| 977 { | |
| 978 cgraph_reset_node (node); | |
| 979 continue; | |
| 980 } | |
| 981 | |
|
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982 if (!node->analyzed) |
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983 cgraph_analyze_function (node); |
| 0 | 984 |
| 985 for (edge = node->callees; edge; edge = edge->next_callee) | |
| 986 if (!edge->callee->reachable) | |
| 987 cgraph_mark_reachable_node (edge->callee); | |
| 988 | |
|
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989 if (node->same_comdat_group) |
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990 { |
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991 for (next = node->same_comdat_group; |
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992 next != node; |
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993 next = next->same_comdat_group) |
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994 cgraph_mark_reachable_node (next); |
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995 } |
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996 |
| 0 | 997 /* If decl is a clone of an abstract function, mark that abstract |
| 998 function so that we don't release its body. The DECL_INITIAL() of that | |
| 999 abstract function declaration will be later needed to output debug info. */ | |
| 1000 if (DECL_ABSTRACT_ORIGIN (decl)) | |
| 1001 { | |
| 1002 struct cgraph_node *origin_node = cgraph_node (DECL_ABSTRACT_ORIGIN (decl)); | |
| 1003 origin_node->abstract_and_needed = true; | |
| 1004 } | |
| 1005 | |
| 1006 /* We finalize local static variables during constructing callgraph | |
| 1007 edges. Process their attributes too. */ | |
| 1008 process_function_and_variable_attributes (first_processed, | |
| 1009 first_analyzed_var); | |
| 1010 first_processed = cgraph_nodes; | |
| 1011 first_analyzed_var = varpool_nodes; | |
| 1012 varpool_analyze_pending_decls (); | |
| 1013 cgraph_process_new_functions (); | |
| 1014 } | |
| 1015 | |
| 1016 /* Collect entry points to the unit. */ | |
| 1017 if (cgraph_dump_file) | |
| 1018 { | |
| 1019 fprintf (cgraph_dump_file, "Unit entry points:"); | |
| 1020 for (node = cgraph_nodes; node != first_analyzed; node = node->next) | |
| 1021 if (node->needed) | |
| 1022 fprintf (cgraph_dump_file, " %s", cgraph_node_name (node)); | |
| 1023 fprintf (cgraph_dump_file, "\n\nInitial "); | |
| 1024 dump_cgraph (cgraph_dump_file); | |
|
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1025 dump_varpool (cgraph_dump_file); |
| 0 | 1026 } |
| 1027 | |
| 1028 if (cgraph_dump_file) | |
| 1029 fprintf (cgraph_dump_file, "\nReclaiming functions:"); | |
| 1030 | |
| 1031 for (node = cgraph_nodes; node != first_analyzed; node = next) | |
| 1032 { | |
| 1033 tree decl = node->decl; | |
| 1034 next = node->next; | |
| 1035 | |
| 1036 if (node->local.finalized && !gimple_has_body_p (decl)) | |
| 1037 cgraph_reset_node (node); | |
| 1038 | |
| 1039 if (!node->reachable && gimple_has_body_p (decl)) | |
| 1040 { | |
| 1041 if (cgraph_dump_file) | |
| 1042 fprintf (cgraph_dump_file, " %s", cgraph_node_name (node)); | |
| 1043 cgraph_remove_node (node); | |
| 1044 continue; | |
| 1045 } | |
| 1046 else | |
| 1047 node->next_needed = NULL; | |
| 1048 gcc_assert (!node->local.finalized || gimple_has_body_p (decl)); | |
| 1049 gcc_assert (node->analyzed == node->local.finalized); | |
| 1050 } | |
| 1051 if (cgraph_dump_file) | |
| 1052 { | |
| 1053 fprintf (cgraph_dump_file, "\n\nReclaimed "); | |
| 1054 dump_cgraph (cgraph_dump_file); | |
|
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1055 dump_varpool (cgraph_dump_file); |
| 0 | 1056 } |
|
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|
1057 bitmap_obstack_release (NULL); |
| 0 | 1058 first_analyzed = cgraph_nodes; |
| 1059 ggc_collect (); | |
| 1060 } | |
| 1061 | |
|
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1062 |
| 0 | 1063 /* Analyze the whole compilation unit once it is parsed completely. */ |
| 1064 | |
| 1065 void | |
| 1066 cgraph_finalize_compilation_unit (void) | |
| 1067 { | |
|
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1068 timevar_push (TV_CGRAPH); |
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1069 |
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1070 /* Do not skip analyzing the functions if there were errors, we |
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1071 miss diagnostics for following functions otherwise. */ |
| 0 | 1072 |
|
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1073 /* Emit size functions we didn't inline. */ |
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1074 finalize_size_functions (); |
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1075 |
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1076 /* Mark alias targets necessary and emit diagnostics. */ |
| 0 | 1077 finish_aliases_1 (); |
| 1078 | |
| 1079 if (!quiet_flag) | |
| 1080 { | |
| 1081 fprintf (stderr, "\nAnalyzing compilation unit\n"); | |
| 1082 fflush (stderr); | |
| 1083 } | |
| 1084 | |
|
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1085 /* Gimplify and lower all functions, compute reachability and |
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1086 remove unreachable nodes. */ |
| 0 | 1087 cgraph_analyze_functions (); |
|
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1088 |
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1089 /* Mark alias targets necessary and emit diagnostics. */ |
|
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1090 finish_aliases_1 (); |
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1091 |
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1092 /* Gimplify and lower thunks. */ |
|
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1093 cgraph_analyze_functions (); |
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1094 |
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1095 /* Finally drive the pass manager. */ |
|
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1096 cgraph_optimize (); |
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1097 |
| 0 | 1098 timevar_pop (TV_CGRAPH); |
| 1099 } | |
|
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1100 |
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1101 |
| 0 | 1102 /* Figure out what functions we want to assemble. */ |
| 1103 | |
| 1104 static void | |
| 1105 cgraph_mark_functions_to_output (void) | |
| 1106 { | |
| 1107 struct cgraph_node *node; | |
|
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1108 #ifdef ENABLE_CHECKING |
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1109 bool check_same_comdat_groups = false; |
|
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1110 |
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1111 for (node = cgraph_nodes; node; node = node->next) |
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1112 gcc_assert (!node->process); |
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1113 #endif |
| 0 | 1114 |
| 1115 for (node = cgraph_nodes; node; node = node->next) | |
| 1116 { | |
| 1117 tree decl = node->decl; | |
| 1118 struct cgraph_edge *e; | |
| 1119 | |
|
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|
1120 gcc_assert (!node->process || node->same_comdat_group); |
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1121 if (node->process) |
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1122 continue; |
| 0 | 1123 |
| 1124 for (e = node->callers; e; e = e->next_caller) | |
| 1125 if (e->inline_failed) | |
| 1126 break; | |
| 1127 | |
| 1128 /* We need to output all local functions that are used and not | |
| 1129 always inlined, as well as those that are reachable from | |
| 1130 outside the current compilation unit. */ | |
| 1131 if (node->analyzed | |
| 1132 && !node->global.inlined_to | |
|
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1133 && (!cgraph_only_called_directly_p (node) |
| 0 | 1134 || (e && node->reachable)) |
| 1135 && !TREE_ASM_WRITTEN (decl) | |
| 1136 && !DECL_EXTERNAL (decl)) | |
|
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1137 { |
|
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|
1138 node->process = 1; |
|
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1139 if (node->same_comdat_group) |
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1140 { |
|
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|
1141 struct cgraph_node *next; |
|
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|
1142 for (next = node->same_comdat_group; |
|
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|
1143 next != node; |
|
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1144 next = next->same_comdat_group) |
|
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1145 next->process = 1; |
|
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1146 } |
|
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|
1147 } |
|
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|
1148 else if (node->same_comdat_group) |
|
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1149 { |
|
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|
1150 #ifdef ENABLE_CHECKING |
|
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1151 check_same_comdat_groups = true; |
|
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|
1152 #endif |
|
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1153 } |
| 0 | 1154 else |
| 1155 { | |
| 1156 /* We should've reclaimed all functions that are not needed. */ | |
| 1157 #ifdef ENABLE_CHECKING | |
| 1158 if (!node->global.inlined_to | |
| 1159 && gimple_has_body_p (decl) | |
|
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1160 /* FIXME: in ltrans unit when offline copy is outside partition but inline copies |
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1161 are inside partition, we can end up not removing the body since we no longer |
|
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1162 have analyzed node pointing to it. */ |
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|
1163 && !node->in_other_partition |
| 0 | 1164 && !DECL_EXTERNAL (decl)) |
| 1165 { | |
| 1166 dump_cgraph_node (stderr, node); | |
| 1167 internal_error ("failed to reclaim unneeded function"); | |
| 1168 } | |
| 1169 #endif | |
| 1170 gcc_assert (node->global.inlined_to | |
| 1171 || !gimple_has_body_p (decl) | |
|
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1172 || node->in_other_partition |
| 0 | 1173 || DECL_EXTERNAL (decl)); |
| 1174 | |
| 1175 } | |
| 1176 | |
| 1177 } | |
|
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1178 #ifdef ENABLE_CHECKING |
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1179 if (check_same_comdat_groups) |
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1180 for (node = cgraph_nodes; node; node = node->next) |
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1181 if (node->same_comdat_group && !node->process) |
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1182 { |
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1183 tree decl = node->decl; |
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1184 if (!node->global.inlined_to |
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1185 && gimple_has_body_p (decl) |
|
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1186 /* FIXME: in ltrans unit when offline copy is outside partition but inline copies |
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1187 are inside partition, we can end up not removing the body since we no longer |
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1188 have analyzed node pointing to it. */ |
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1189 && !node->in_other_partition |
|
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1190 && !DECL_EXTERNAL (decl)) |
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1191 { |
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1192 dump_cgraph_node (stderr, node); |
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1193 internal_error ("failed to reclaim unneeded function"); |
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1194 } |
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1195 } |
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1196 #endif |
|
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|
1197 } |
|
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diff
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|
1198 |
|
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diff
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|
1199 /* DECL is FUNCTION_DECL. Initialize datastructures so DECL is a function |
|
77e2b8dfacca
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diff
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|
1200 in lowered gimple form. |
|
77e2b8dfacca
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diff
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|
1201 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1202 Set current_function_decl and cfun to newly constructed empty function body. |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1203 return basic block in the function body. */ |
|
77e2b8dfacca
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36
diff
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|
1204 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
changeset
|
1205 static basic_block |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1206 init_lowered_empty_function (tree decl) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1207 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1208 basic_block bb; |
|
77e2b8dfacca
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36
diff
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|
1209 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
changeset
|
1210 current_function_decl = decl; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1211 allocate_struct_function (decl, false); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1212 gimple_register_cfg_hooks (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1213 init_empty_tree_cfg (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1214 init_tree_ssa (cfun); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1215 init_ssa_operands (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1216 cfun->gimple_df->in_ssa_p = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1217 DECL_INITIAL (decl) = make_node (BLOCK); |
|
77e2b8dfacca
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diff
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|
1218 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1219 DECL_SAVED_TREE (decl) = error_mark_node; |
|
77e2b8dfacca
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36
diff
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|
1220 cfun->curr_properties |= |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
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|
1221 (PROP_gimple_lcf | PROP_gimple_leh | PROP_cfg | PROP_referenced_vars | |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1222 PROP_ssa); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
1223 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1224 /* Create BB for body of the function and connect it properly. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1225 bb = create_basic_block (NULL, (void *) 0, ENTRY_BLOCK_PTR); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1226 make_edge (ENTRY_BLOCK_PTR, bb, 0); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1227 make_edge (bb, EXIT_BLOCK_PTR, 0); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
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|
1228 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1229 return bb; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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36
diff
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|
1230 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1231 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1232 /* Adjust PTR by the constant FIXED_OFFSET, and by the vtable |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1233 offset indicated by VIRTUAL_OFFSET, if that is |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1234 non-null. THIS_ADJUSTING is nonzero for a this adjusting thunk and |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1235 zero for a result adjusting thunk. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1236 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1237 static tree |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1238 thunk_adjust (gimple_stmt_iterator * bsi, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1239 tree ptr, bool this_adjusting, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1240 HOST_WIDE_INT fixed_offset, tree virtual_offset) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1241 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1242 gimple stmt; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1243 tree ret; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1244 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1245 if (this_adjusting |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1246 && fixed_offset != 0) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1247 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1248 stmt = gimple_build_assign (ptr, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1249 fold_build2_loc (input_location, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1250 POINTER_PLUS_EXPR, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1251 TREE_TYPE (ptr), ptr, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1252 size_int (fixed_offset))); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1253 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1254 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1255 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1256 /* If there's a virtual offset, look up that value in the vtable and |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1257 adjust the pointer again. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1258 if (virtual_offset) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1259 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1260 tree vtabletmp; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1261 tree vtabletmp2; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1262 tree vtabletmp3; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1263 tree offsettmp; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1264 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1265 if (!vtable_entry_type) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1266 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1267 tree vfunc_type = make_node (FUNCTION_TYPE); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1268 TREE_TYPE (vfunc_type) = integer_type_node; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1269 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1270 layout_type (vfunc_type); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1271 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1272 vtable_entry_type = build_pointer_type (vfunc_type); |
|
77e2b8dfacca
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36
diff
changeset
|
1273 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1274 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1275 vtabletmp = |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1276 create_tmp_var (build_pointer_type |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1277 (build_pointer_type (vtable_entry_type)), "vptr"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1278 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1279 /* The vptr is always at offset zero in the object. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1280 stmt = gimple_build_assign (vtabletmp, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1281 build1 (NOP_EXPR, TREE_TYPE (vtabletmp), |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1282 ptr)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1283 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1284 mark_symbols_for_renaming (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1285 find_referenced_vars_in (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1286 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1287 /* Form the vtable address. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1288 vtabletmp2 = create_tmp_var (TREE_TYPE (TREE_TYPE (vtabletmp)), |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1289 "vtableaddr"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1290 stmt = gimple_build_assign (vtabletmp2, |
|
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
|
1291 build_simple_mem_ref (vtabletmp)); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1292 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1293 mark_symbols_for_renaming (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1294 find_referenced_vars_in (stmt); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
36
diff
changeset
|
1295 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1296 /* Find the entry with the vcall offset. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1297 stmt = gimple_build_assign (vtabletmp2, |
|
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|
1298 fold_build2_loc (input_location, |
|
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diff
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|
1299 POINTER_PLUS_EXPR, |
|
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diff
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|
1300 TREE_TYPE (vtabletmp2), |
|
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diff
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|
1301 vtabletmp2, |
|
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|
1302 fold_convert (sizetype, |
|
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diff
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|
1303 virtual_offset))); |
|
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|
1304 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
77e2b8dfacca
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|
1305 |
|
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diff
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|
1306 /* Get the offset itself. */ |
|
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diff
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|
1307 vtabletmp3 = create_tmp_var (TREE_TYPE (TREE_TYPE (vtabletmp2)), |
|
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diff
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|
1308 "vcalloffset"); |
|
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diff
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|
1309 stmt = gimple_build_assign (vtabletmp3, |
|
67
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|
1310 build_simple_mem_ref (vtabletmp2)); |
|
55
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|
1311 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
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diff
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|
1312 mark_symbols_for_renaming (stmt); |
|
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|
1313 find_referenced_vars_in (stmt); |
|
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|
1314 |
|
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|
1315 /* Cast to sizetype. */ |
|
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|
1316 offsettmp = create_tmp_var (sizetype, "offset"); |
|
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|
1317 stmt = gimple_build_assign (offsettmp, fold_convert (sizetype, vtabletmp3)); |
|
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|
1318 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
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|
1319 mark_symbols_for_renaming (stmt); |
|
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|
1320 find_referenced_vars_in (stmt); |
|
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|
1321 |
|
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|
1322 /* Adjust the `this' pointer. */ |
|
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|
1323 ptr = fold_build2_loc (input_location, |
|
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|
1324 POINTER_PLUS_EXPR, TREE_TYPE (ptr), ptr, |
|
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|
1325 offsettmp); |
|
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1326 } |
|
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|
1327 |
|
63
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|
1328 if (!this_adjusting |
|
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|
1329 && fixed_offset != 0) |
|
55
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|
1330 /* Adjust the pointer by the constant. */ |
|
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|
1331 { |
|
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|
1332 tree ptrtmp; |
|
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|
1333 |
|
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|
1334 if (TREE_CODE (ptr) == VAR_DECL) |
|
77e2b8dfacca
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|
1335 ptrtmp = ptr; |
|
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diff
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|
1336 else |
|
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diff
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|
1337 { |
|
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|
1338 ptrtmp = create_tmp_var (TREE_TYPE (ptr), "ptr"); |
|
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diff
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|
1339 stmt = gimple_build_assign (ptrtmp, ptr); |
|
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diff
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|
1340 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
77e2b8dfacca
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diff
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|
1341 mark_symbols_for_renaming (stmt); |
|
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diff
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|
1342 find_referenced_vars_in (stmt); |
|
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diff
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|
1343 } |
|
77e2b8dfacca
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36
diff
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|
1344 ptr = fold_build2_loc (input_location, |
|
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|
1345 POINTER_PLUS_EXPR, TREE_TYPE (ptrtmp), ptrtmp, |
|
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diff
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|
1346 size_int (fixed_offset)); |
|
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diff
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|
1347 } |
|
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diff
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|
1348 |
|
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diff
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|
1349 /* Emit the statement and gimplify the adjustment expression. */ |
|
77e2b8dfacca
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|
1350 ret = create_tmp_var (TREE_TYPE (ptr), "adjusted_this"); |
|
77e2b8dfacca
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diff
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|
1351 stmt = gimple_build_assign (ret, ptr); |
|
77e2b8dfacca
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diff
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|
1352 mark_symbols_for_renaming (stmt); |
|
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diff
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|
1353 find_referenced_vars_in (stmt); |
|
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diff
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|
1354 gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
|
77e2b8dfacca
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diff
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|
1355 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1356 return ret; |
|
77e2b8dfacca
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diff
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|
1357 } |
|
77e2b8dfacca
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diff
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|
1358 |
|
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diff
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|
1359 /* Produce assembler for thunk NODE. */ |
|
77e2b8dfacca
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diff
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|
1360 |
|
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diff
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|
1361 static void |
|
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diff
changeset
|
1362 assemble_thunk (struct cgraph_node *node) |
|
77e2b8dfacca
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diff
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|
1363 { |
|
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diff
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|
1364 bool this_adjusting = node->thunk.this_adjusting; |
|
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diff
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|
1365 HOST_WIDE_INT fixed_offset = node->thunk.fixed_offset; |
|
77e2b8dfacca
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diff
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|
1366 HOST_WIDE_INT virtual_value = node->thunk.virtual_value; |
|
77e2b8dfacca
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diff
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|
1367 tree virtual_offset = NULL; |
|
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diff
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|
1368 tree alias = node->thunk.alias; |
|
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|
1369 tree thunk_fndecl = node->decl; |
|
77e2b8dfacca
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diff
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|
1370 tree a = DECL_ARGUMENTS (thunk_fndecl); |
|
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diff
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|
1371 |
|
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|
1372 current_function_decl = thunk_fndecl; |
|
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diff
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|
1373 |
|
67
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diff
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|
1374 /* Ensure thunks are emitted in their correct sections. */ |
|
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|
1375 resolve_unique_section (thunk_fndecl, 0, flag_function_sections); |
|
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|
1376 |
|
55
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diff
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|
1377 if (this_adjusting |
|
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diff
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|
1378 && targetm.asm_out.can_output_mi_thunk (thunk_fndecl, fixed_offset, |
|
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diff
changeset
|
1379 virtual_value, alias)) |
|
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|
1380 { |
|
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diff
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|
1381 const char *fnname; |
|
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diff
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|
1382 tree fn_block; |
|
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diff
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|
1383 |
|
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|
1384 DECL_RESULT (thunk_fndecl) |
|
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|
1385 = build_decl (DECL_SOURCE_LOCATION (thunk_fndecl), |
|
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diff
changeset
|
1386 RESULT_DECL, 0, integer_type_node); |
|
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diff
changeset
|
1387 fnname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk_fndecl)); |
|
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diff
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|
1388 |
|
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diff
changeset
|
1389 /* The back end expects DECL_INITIAL to contain a BLOCK, so we |
|
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diff
changeset
|
1390 create one. */ |
|
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diff
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|
1391 fn_block = make_node (BLOCK); |
|
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diff
changeset
|
1392 BLOCK_VARS (fn_block) = a; |
|
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diff
changeset
|
1393 DECL_INITIAL (thunk_fndecl) = fn_block; |
|
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diff
changeset
|
1394 init_function_start (thunk_fndecl); |
|
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changeset
|
1395 cfun->is_thunk = 1; |
|
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diff
changeset
|
1396 assemble_start_function (thunk_fndecl, fnname); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1397 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1398 targetm.asm_out.output_mi_thunk (asm_out_file, thunk_fndecl, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1399 fixed_offset, virtual_value, alias); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1400 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1401 assemble_end_function (thunk_fndecl, fnname); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1402 init_insn_lengths (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1403 free_after_compilation (cfun); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1404 set_cfun (NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1405 TREE_ASM_WRITTEN (thunk_fndecl) = 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1406 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1407 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1408 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1409 tree restype; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1410 basic_block bb, then_bb, else_bb, return_bb; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1411 gimple_stmt_iterator bsi; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1412 int nargs = 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1413 tree arg; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1414 int i; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1415 tree resdecl; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1416 tree restmp = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1417 VEC(tree, heap) *vargs; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1418 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1419 gimple call; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1420 gimple ret; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1421 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1422 DECL_IGNORED_P (thunk_fndecl) = 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1423 bitmap_obstack_initialize (NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1424 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1425 if (node->thunk.virtual_offset_p) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1426 virtual_offset = size_int (virtual_value); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1427 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1428 /* Build the return declaration for the function. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1429 restype = TREE_TYPE (TREE_TYPE (thunk_fndecl)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1430 if (DECL_RESULT (thunk_fndecl) == NULL_TREE) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1431 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1432 resdecl = build_decl (input_location, RESULT_DECL, 0, restype); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1433 DECL_ARTIFICIAL (resdecl) = 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1434 DECL_IGNORED_P (resdecl) = 1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1435 DECL_RESULT (thunk_fndecl) = resdecl; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1436 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1437 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1438 resdecl = DECL_RESULT (thunk_fndecl); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1439 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1440 bb = then_bb = else_bb = return_bb = init_lowered_empty_function (thunk_fndecl); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1441 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1442 bsi = gsi_start_bb (bb); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1443 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1444 /* Build call to the function being thunked. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1445 if (!VOID_TYPE_P (restype)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1446 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1447 if (!is_gimple_reg_type (restype)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1448 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1449 restmp = resdecl; |
|
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
|
1450 add_local_decl (cfun, restmp); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1451 BLOCK_VARS (DECL_INITIAL (current_function_decl)) = restmp; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1452 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1453 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1454 restmp = create_tmp_var_raw (restype, "retval"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1455 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1456 |
|
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
|
1457 for (arg = a; arg; arg = DECL_CHAIN (arg)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1458 nargs++; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1459 vargs = VEC_alloc (tree, heap, nargs); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1460 if (this_adjusting) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1461 VEC_quick_push (tree, vargs, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1462 thunk_adjust (&bsi, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1463 a, 1, fixed_offset, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1464 virtual_offset)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1465 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1466 VEC_quick_push (tree, vargs, a); |
|
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
|
1467 for (i = 1, arg = DECL_CHAIN (a); i < nargs; i++, arg = DECL_CHAIN (arg)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1468 VEC_quick_push (tree, vargs, arg); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1469 call = gimple_build_call_vec (build_fold_addr_expr_loc (0, alias), vargs); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1470 VEC_free (tree, heap, vargs); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1471 gimple_call_set_cannot_inline (call, true); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1472 gimple_call_set_from_thunk (call, true); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1473 if (restmp) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1474 gimple_call_set_lhs (call, restmp); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1475 gsi_insert_after (&bsi, call, GSI_NEW_STMT); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1476 mark_symbols_for_renaming (call); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1477 find_referenced_vars_in (call); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1478 update_stmt (call); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1479 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1480 if (restmp && !this_adjusting) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1481 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1482 tree true_label = NULL_TREE; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1483 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1484 if (TREE_CODE (TREE_TYPE (restmp)) == POINTER_TYPE) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1485 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1486 gimple stmt; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1487 /* If the return type is a pointer, we need to |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1488 protect against NULL. We know there will be an |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1489 adjustment, because that's why we're emitting a |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1490 thunk. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1491 then_bb = create_basic_block (NULL, (void *) 0, bb); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1492 return_bb = create_basic_block (NULL, (void *) 0, then_bb); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1493 else_bb = create_basic_block (NULL, (void *) 0, else_bb); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1494 remove_edge (single_succ_edge (bb)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1495 true_label = gimple_block_label (then_bb); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
1496 stmt = gimple_build_cond (NE_EXPR, restmp, |
|
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1497 build_zero_cst (TREE_TYPE (restmp)), |
|
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|
1498 NULL_TREE, NULL_TREE); |
|
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|
1499 gsi_insert_after (&bsi, stmt, GSI_NEW_STMT); |
|
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|
1500 make_edge (bb, then_bb, EDGE_TRUE_VALUE); |
|
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|
1501 make_edge (bb, else_bb, EDGE_FALSE_VALUE); |
|
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diff
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|
1502 make_edge (return_bb, EXIT_BLOCK_PTR, 0); |
|
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|
1503 make_edge (then_bb, return_bb, EDGE_FALLTHRU); |
|
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|
1504 make_edge (else_bb, return_bb, EDGE_FALLTHRU); |
|
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|
1505 bsi = gsi_last_bb (then_bb); |
|
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|
1506 } |
|
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|
1507 |
|
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|
1508 restmp = thunk_adjust (&bsi, restmp, /*this_adjusting=*/0, |
|
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|
1509 fixed_offset, virtual_offset); |
|
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|
1510 if (true_label) |
|
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|
1511 { |
|
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|
1512 gimple stmt; |
|
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|
1513 bsi = gsi_last_bb (else_bb); |
|
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|
1514 stmt = gimple_build_assign (restmp, |
|
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|
1515 build_zero_cst (TREE_TYPE (restmp))); |
|
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|
1516 gsi_insert_after (&bsi, stmt, GSI_NEW_STMT); |
|
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|
1517 bsi = gsi_last_bb (return_bb); |
|
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|
1518 } |
|
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|
1519 } |
|
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|
1520 else |
|
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|
1521 gimple_call_set_tail (call, true); |
|
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|
1522 |
|
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|
1523 /* Build return value. */ |
|
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|
1524 ret = gimple_build_return (restmp); |
|
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|
1525 gsi_insert_after (&bsi, ret, GSI_NEW_STMT); |
|
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|
1526 |
|
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|
1527 delete_unreachable_blocks (); |
|
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|
1528 update_ssa (TODO_update_ssa); |
|
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|
1529 |
|
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|
1530 cgraph_remove_same_body_alias (node); |
|
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|
1531 /* Since we want to emit the thunk, we explicitly mark its name as |
|
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|
1532 referenced. */ |
|
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|
1533 cgraph_add_new_function (thunk_fndecl, true); |
|
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|
1534 bitmap_obstack_release (NULL); |
|
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|
1535 } |
|
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|
1536 current_function_decl = NULL; |
| 0 | 1537 } |
| 1538 | |
| 1539 /* Expand function specified by NODE. */ | |
| 1540 | |
| 1541 static void | |
| 1542 cgraph_expand_function (struct cgraph_node *node) | |
| 1543 { | |
| 1544 tree decl = node->decl; | |
| 1545 | |
| 1546 /* We ought to not compile any inline clones. */ | |
| 1547 gcc_assert (!node->global.inlined_to); | |
| 1548 | |
| 1549 announce_function (decl); | |
|
55
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|
1550 node->process = 0; |
|
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|
1551 if (node->same_body) |
|
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|
1552 { |
|
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|
1553 struct cgraph_node *alias, *next; |
|
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|
1554 bool saved_alias = node->alias; |
|
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|
1555 for (alias = node->same_body; |
|
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|
1556 alias && alias->next; alias = alias->next) |
|
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|
1557 ; |
|
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|
1558 /* Walk aliases in the order they were created; it is possible that |
|
67
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|
1559 thunks refers to the aliases made earlier. */ |
|
55
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|
1560 for (; alias; alias = next) |
|
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|
1561 { |
|
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|
1562 next = alias->previous; |
|
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|
1563 if (!alias->thunk.thunk_p) |
|
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|
1564 assemble_alias (alias->decl, |
|
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|
1565 DECL_ASSEMBLER_NAME (alias->thunk.alias)); |
|
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|
1566 else |
|
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|
1567 assemble_thunk (alias); |
|
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|
1568 } |
|
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|
1569 node->alias = saved_alias; |
|
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|
1570 cgraph_process_new_functions (); |
|
55
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|
1571 } |
|
67
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|
1572 |
|
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|
1573 gcc_assert (node->lowered); |
|
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|
1574 |
|
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|
1575 /* Generate RTL for the body of DECL. */ |
|
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|
1576 tree_rest_of_compilation (decl); |
|
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|
1577 |
|
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|
1578 /* Make sure that BE didn't give up on compiling. */ |
|
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|
1579 gcc_assert (TREE_ASM_WRITTEN (decl)); |
|
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|
1580 current_function_decl = NULL; |
| 0 | 1581 gcc_assert (!cgraph_preserve_function_body_p (decl)); |
| 1582 cgraph_release_function_body (node); | |
| 1583 /* Eliminate all call edges. This is important so the GIMPLE_CALL no longer | |
| 1584 points to the dead function body. */ | |
| 1585 cgraph_node_remove_callees (node); | |
| 1586 | |
| 1587 cgraph_function_flags_ready = true; | |
| 1588 } | |
| 1589 | |
| 1590 /* Return true when CALLER_DECL should be inlined into CALLEE_DECL. */ | |
| 1591 | |
| 1592 bool | |
|
55
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|
1593 cgraph_inline_p (struct cgraph_edge *e, cgraph_inline_failed_t *reason) |
| 0 | 1594 { |
| 1595 *reason = e->inline_failed; | |
| 1596 return !e->inline_failed; | |
| 1597 } | |
| 1598 | |
| 1599 | |
| 1600 | |
| 1601 /* Expand all functions that must be output. | |
| 1602 | |
| 1603 Attempt to topologically sort the nodes so function is output when | |
| 1604 all called functions are already assembled to allow data to be | |
| 1605 propagated across the callgraph. Use a stack to get smaller distance | |
| 1606 between a function and its callees (later we may choose to use a more | |
| 1607 sophisticated algorithm for function reordering; we will likely want | |
| 1608 to use subsections to make the output functions appear in top-down | |
| 1609 order). */ | |
| 1610 | |
| 1611 static void | |
| 1612 cgraph_expand_all_functions (void) | |
| 1613 { | |
| 1614 struct cgraph_node *node; | |
| 1615 struct cgraph_node **order = XCNEWVEC (struct cgraph_node *, cgraph_n_nodes); | |
| 1616 int order_pos, new_order_pos = 0; | |
| 1617 int i; | |
| 1618 | |
| 1619 order_pos = cgraph_postorder (order); | |
| 1620 gcc_assert (order_pos == cgraph_n_nodes); | |
| 1621 | |
| 1622 /* Garbage collector may remove inline clones we eliminate during | |
| 1623 optimization. So we must be sure to not reference them. */ | |
| 1624 for (i = 0; i < order_pos; i++) | |
|
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|
1625 if (order[i]->process) |
| 0 | 1626 order[new_order_pos++] = order[i]; |
| 1627 | |
| 1628 for (i = new_order_pos - 1; i >= 0; i--) | |
| 1629 { | |
| 1630 node = order[i]; | |
|
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|
1631 if (node->process) |
| 0 | 1632 { |
| 1633 gcc_assert (node->reachable); | |
|
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|
1634 node->process = 0; |
| 0 | 1635 cgraph_expand_function (node); |
| 1636 } | |
| 1637 } | |
| 1638 cgraph_process_new_functions (); | |
| 1639 | |
| 1640 free (order); | |
| 1641 | |
| 1642 } | |
| 1643 | |
| 1644 /* This is used to sort the node types by the cgraph order number. */ | |
| 1645 | |
|
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|
1646 enum cgraph_order_sort_kind |
|
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|
1647 { |
|
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|
1648 ORDER_UNDEFINED = 0, |
|
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|
1649 ORDER_FUNCTION, |
|
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|
1650 ORDER_VAR, |
|
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changeset
|
1651 ORDER_ASM |
|
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|
1652 }; |
|
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|
1653 |
| 0 | 1654 struct cgraph_order_sort |
| 1655 { | |
|
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|
1656 enum cgraph_order_sort_kind kind; |
| 0 | 1657 union |
| 1658 { | |
| 1659 struct cgraph_node *f; | |
| 1660 struct varpool_node *v; | |
| 1661 struct cgraph_asm_node *a; | |
| 1662 } u; | |
| 1663 }; | |
| 1664 | |
| 1665 /* Output all functions, variables, and asm statements in the order | |
| 1666 according to their order fields, which is the order in which they | |
| 1667 appeared in the file. This implements -fno-toplevel-reorder. In | |
| 1668 this mode we may output functions and variables which don't really | |
| 1669 need to be output. */ | |
| 1670 | |
| 1671 static void | |
| 1672 cgraph_output_in_order (void) | |
| 1673 { | |
| 1674 int max; | |
| 1675 struct cgraph_order_sort *nodes; | |
| 1676 int i; | |
| 1677 struct cgraph_node *pf; | |
| 1678 struct varpool_node *pv; | |
| 1679 struct cgraph_asm_node *pa; | |
| 1680 | |
| 1681 max = cgraph_order; | |
|
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1682 nodes = XCNEWVEC (struct cgraph_order_sort, max); |
| 0 | 1683 |
| 1684 varpool_analyze_pending_decls (); | |
| 1685 | |
| 1686 for (pf = cgraph_nodes; pf; pf = pf->next) | |
| 1687 { | |
|
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1688 if (pf->process) |
| 0 | 1689 { |
| 1690 i = pf->order; | |
| 1691 gcc_assert (nodes[i].kind == ORDER_UNDEFINED); | |
| 1692 nodes[i].kind = ORDER_FUNCTION; | |
| 1693 nodes[i].u.f = pf; | |
| 1694 } | |
| 1695 } | |
| 1696 | |
| 1697 for (pv = varpool_nodes_queue; pv; pv = pv->next_needed) | |
| 1698 { | |
| 1699 i = pv->order; | |
| 1700 gcc_assert (nodes[i].kind == ORDER_UNDEFINED); | |
| 1701 nodes[i].kind = ORDER_VAR; | |
| 1702 nodes[i].u.v = pv; | |
| 1703 } | |
| 1704 | |
| 1705 for (pa = cgraph_asm_nodes; pa; pa = pa->next) | |
| 1706 { | |
| 1707 i = pa->order; | |
| 1708 gcc_assert (nodes[i].kind == ORDER_UNDEFINED); | |
| 1709 nodes[i].kind = ORDER_ASM; | |
| 1710 nodes[i].u.a = pa; | |
| 1711 } | |
| 1712 | |
| 1713 /* In toplevel reorder mode we output all statics; mark them as needed. */ | |
| 1714 for (i = 0; i < max; ++i) | |
| 1715 { | |
| 1716 if (nodes[i].kind == ORDER_VAR) | |
| 1717 { | |
| 1718 varpool_mark_needed_node (nodes[i].u.v); | |
| 1719 } | |
| 1720 } | |
| 1721 varpool_empty_needed_queue (); | |
| 1722 | |
| 1723 for (i = 0; i < max; ++i) | |
|
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1724 if (nodes[i].kind == ORDER_VAR) |
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1725 varpool_finalize_named_section_flags (nodes[i].u.v); |
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1726 |
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1727 for (i = 0; i < max; ++i) |
| 0 | 1728 { |
| 1729 switch (nodes[i].kind) | |
| 1730 { | |
| 1731 case ORDER_FUNCTION: | |
|
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1732 nodes[i].u.f->process = 0; |
| 0 | 1733 cgraph_expand_function (nodes[i].u.f); |
| 1734 break; | |
| 1735 | |
| 1736 case ORDER_VAR: | |
| 1737 varpool_assemble_decl (nodes[i].u.v); | |
| 1738 break; | |
| 1739 | |
| 1740 case ORDER_ASM: | |
| 1741 assemble_asm (nodes[i].u.a->asm_str); | |
| 1742 break; | |
| 1743 | |
| 1744 case ORDER_UNDEFINED: | |
| 1745 break; | |
| 1746 | |
| 1747 default: | |
| 1748 gcc_unreachable (); | |
| 1749 } | |
| 1750 } | |
| 1751 | |
| 1752 cgraph_asm_nodes = NULL; | |
|
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1753 free (nodes); |
| 0 | 1754 } |
| 1755 | |
| 1756 /* Return true when function body of DECL still needs to be kept around | |
| 1757 for later re-use. */ | |
| 1758 bool | |
| 1759 cgraph_preserve_function_body_p (tree decl) | |
| 1760 { | |
| 1761 struct cgraph_node *node; | |
| 1762 | |
| 1763 gcc_assert (cgraph_global_info_ready); | |
| 1764 /* Look if there is any clone around. */ | |
|
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1765 node = cgraph_node (decl); |
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1766 if (node->clones) |
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1767 return true; |
| 0 | 1768 return false; |
| 1769 } | |
| 1770 | |
| 1771 static void | |
| 1772 ipa_passes (void) | |
| 1773 { | |
| 1774 set_cfun (NULL); | |
| 1775 current_function_decl = NULL; | |
| 1776 gimple_register_cfg_hooks (); | |
| 1777 bitmap_obstack_initialize (NULL); | |
|
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1778 |
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1779 invoke_plugin_callbacks (PLUGIN_ALL_IPA_PASSES_START, NULL); |
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1780 |
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1781 if (!in_lto_p) |
|
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1782 { |
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1783 execute_ipa_pass_list (all_small_ipa_passes); |
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1784 if (seen_error ()) |
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1785 return; |
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1786 } |
|
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1787 |
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1788 /* If pass_all_early_optimizations was not scheduled, the state of |
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1789 the cgraph will not be properly updated. Update it now. */ |
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1790 if (cgraph_state < CGRAPH_STATE_IPA_SSA) |
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1791 cgraph_state = CGRAPH_STATE_IPA_SSA; |
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1792 |
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1793 if (!in_lto_p) |
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1794 { |
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1795 /* Generate coverage variables and constructors. */ |
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1796 coverage_finish (); |
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1797 |
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1798 /* Process new functions added. */ |
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1799 set_cfun (NULL); |
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1800 current_function_decl = NULL; |
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1801 cgraph_process_new_functions (); |
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1802 |
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1803 execute_ipa_summary_passes |
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1804 ((struct ipa_opt_pass_d *) all_regular_ipa_passes); |
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1805 } |
|
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1806 |
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1807 /* Some targets need to handle LTO assembler output specially. */ |
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1808 if (flag_generate_lto) |
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1809 targetm.asm_out.lto_start (); |
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1810 |
|
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1811 execute_ipa_summary_passes ((struct ipa_opt_pass_d *) all_lto_gen_passes); |
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1812 |
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1813 if (!in_lto_p) |
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1814 ipa_write_summaries (); |
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1815 |
|
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1816 if (flag_generate_lto) |
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1817 targetm.asm_out.lto_end (); |
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1818 |
|
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1819 if (!flag_ltrans) |
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1820 execute_ipa_pass_list (all_regular_ipa_passes); |
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1821 invoke_plugin_callbacks (PLUGIN_ALL_IPA_PASSES_END, NULL); |
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1822 |
| 0 | 1823 bitmap_obstack_release (NULL); |
| 1824 } | |
| 1825 | |
|
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1826 |
| 0 | 1827 /* Perform simple optimizations based on callgraph. */ |
| 1828 | |
| 1829 void | |
| 1830 cgraph_optimize (void) | |
| 1831 { | |
|
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1832 if (seen_error ()) |
| 0 | 1833 return; |
| 1834 | |
| 1835 #ifdef ENABLE_CHECKING | |
| 1836 verify_cgraph (); | |
| 1837 #endif | |
| 1838 | |
| 1839 /* Frontend may output common variables after the unit has been finalized. | |
| 1840 It is safe to deal with them here as they are always zero initialized. */ | |
| 1841 varpool_analyze_pending_decls (); | |
| 1842 | |
| 1843 timevar_push (TV_CGRAPHOPT); | |
| 1844 if (pre_ipa_mem_report) | |
| 1845 { | |
| 1846 fprintf (stderr, "Memory consumption before IPA\n"); | |
| 1847 dump_memory_report (false); | |
| 1848 } | |
| 1849 if (!quiet_flag) | |
| 1850 fprintf (stderr, "Performing interprocedural optimizations\n"); | |
| 1851 cgraph_state = CGRAPH_STATE_IPA; | |
| 1852 | |
| 1853 /* Don't run the IPA passes if there was any error or sorry messages. */ | |
|
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1854 if (!seen_error ()) |
| 0 | 1855 ipa_passes (); |
| 1856 | |
|
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1857 /* Do nothing else if any IPA pass found errors. */ |
|
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1858 if (seen_error ()) |
|
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1859 { |
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1860 timevar_pop (TV_CGRAPHOPT); |
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1861 return; |
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1862 } |
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1863 |
| 0 | 1864 /* This pass remove bodies of extern inline functions we never inlined. |
| 1865 Do this later so other IPA passes see what is really going on. */ | |
| 1866 cgraph_remove_unreachable_nodes (false, dump_file); | |
| 1867 cgraph_global_info_ready = true; | |
| 1868 if (cgraph_dump_file) | |
| 1869 { | |
| 1870 fprintf (cgraph_dump_file, "Optimized "); | |
| 1871 dump_cgraph (cgraph_dump_file); | |
| 1872 dump_varpool (cgraph_dump_file); | |
| 1873 } | |
| 1874 if (post_ipa_mem_report) | |
| 1875 { | |
| 1876 fprintf (stderr, "Memory consumption after IPA\n"); | |
| 1877 dump_memory_report (false); | |
| 1878 } | |
| 1879 timevar_pop (TV_CGRAPHOPT); | |
| 1880 | |
| 1881 /* Output everything. */ | |
| 36 | 1882 (*debug_hooks->assembly_start) (); |
| 0 | 1883 if (!quiet_flag) |
| 1884 fprintf (stderr, "Assembling functions:\n"); | |
| 1885 #ifdef ENABLE_CHECKING | |
| 1886 verify_cgraph (); | |
| 1887 #endif | |
| 1888 | |
|
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1889 cgraph_materialize_all_clones (); |
| 0 | 1890 cgraph_mark_functions_to_output (); |
| 1891 | |
| 1892 cgraph_state = CGRAPH_STATE_EXPANSION; | |
| 1893 if (!flag_toplevel_reorder) | |
| 1894 cgraph_output_in_order (); | |
| 1895 else | |
| 1896 { | |
| 1897 cgraph_output_pending_asms (); | |
| 1898 | |
| 1899 cgraph_expand_all_functions (); | |
| 1900 varpool_remove_unreferenced_decls (); | |
| 1901 | |
| 1902 varpool_assemble_pending_decls (); | |
| 1903 } | |
| 1904 cgraph_process_new_functions (); | |
| 1905 cgraph_state = CGRAPH_STATE_FINISHED; | |
| 1906 | |
| 1907 if (cgraph_dump_file) | |
| 1908 { | |
| 1909 fprintf (cgraph_dump_file, "\nFinal "); | |
| 1910 dump_cgraph (cgraph_dump_file); | |
|
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1911 dump_varpool (cgraph_dump_file); |
| 0 | 1912 } |
| 1913 #ifdef ENABLE_CHECKING | |
| 1914 verify_cgraph (); | |
| 1915 /* Double check that all inline clones are gone and that all | |
| 1916 function bodies have been released from memory. */ | |
|
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1917 if (!seen_error ()) |
| 0 | 1918 { |
| 1919 struct cgraph_node *node; | |
| 1920 bool error_found = false; | |
| 1921 | |
| 1922 for (node = cgraph_nodes; node; node = node->next) | |
| 1923 if (node->analyzed | |
| 1924 && (node->global.inlined_to | |
| 1925 || gimple_has_body_p (node->decl))) | |
| 1926 { | |
| 1927 error_found = true; | |
| 1928 dump_cgraph_node (stderr, node); | |
| 1929 } | |
| 1930 if (error_found) | |
| 1931 internal_error ("nodes with unreleased memory found"); | |
| 1932 } | |
| 1933 #endif | |
| 1934 } | |
|
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1935 |
| 0 | 1936 void |
| 1937 init_cgraph (void) | |
| 1938 { | |
|
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1939 if (!cgraph_dump_file) |
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1940 cgraph_dump_file = dump_begin (TDI_cgraph, NULL); |
| 0 | 1941 } |
| 1942 | |
| 1943 /* The edges representing the callers of the NEW_VERSION node were | |
| 1944 fixed by cgraph_function_versioning (), now the call_expr in their | |
| 1945 respective tree code should be updated to call the NEW_VERSION. */ | |
| 1946 | |
| 1947 static void | |
| 1948 update_call_expr (struct cgraph_node *new_version) | |
| 1949 { | |
| 1950 struct cgraph_edge *e; | |
| 1951 | |
| 1952 gcc_assert (new_version); | |
| 1953 | |
| 1954 /* Update the call expr on the edges to call the new version. */ | |
| 1955 for (e = new_version->callers; e; e = e->next_caller) | |
| 1956 { | |
| 1957 struct function *inner_function = DECL_STRUCT_FUNCTION (e->caller->decl); | |
| 1958 gimple_call_set_fndecl (e->call_stmt, new_version->decl); | |
|
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1959 maybe_clean_eh_stmt_fn (inner_function, e->call_stmt); |
| 0 | 1960 } |
| 1961 } | |
| 1962 | |
| 1963 | |
| 1964 /* Create a new cgraph node which is the new version of | |
| 1965 OLD_VERSION node. REDIRECT_CALLERS holds the callers | |
| 1966 edges which should be redirected to point to | |
| 1967 NEW_VERSION. ALL the callees edges of OLD_VERSION | |
| 1968 are cloned to the new version node. Return the new | |
|
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1969 version node. |
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1970 |
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1971 If non-NULL BLOCK_TO_COPY determine what basic blocks |
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1972 was copied to prevent duplications of calls that are dead |
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1973 in the clone. */ |
| 0 | 1974 |
| 1975 static struct cgraph_node * | |
| 1976 cgraph_copy_node_for_versioning (struct cgraph_node *old_version, | |
| 1977 tree new_decl, | |
|
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1978 VEC(cgraph_edge_p,heap) *redirect_callers, |
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1979 bitmap bbs_to_copy) |
| 0 | 1980 { |
| 1981 struct cgraph_node *new_version; | |
|
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1982 struct cgraph_edge *e; |
| 0 | 1983 unsigned i; |
| 1984 | |
| 1985 gcc_assert (old_version); | |
| 1986 | |
| 1987 new_version = cgraph_node (new_decl); | |
| 1988 | |
| 1989 new_version->analyzed = true; | |
| 1990 new_version->local = old_version->local; | |
|
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1991 new_version->local.externally_visible = false; |
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1992 new_version->local.local = true; |
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1993 new_version->local.vtable_method = false; |
| 0 | 1994 new_version->global = old_version->global; |
|
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1995 new_version->rtl = old_version->rtl; |
| 0 | 1996 new_version->reachable = true; |
| 1997 new_version->count = old_version->count; | |
| 1998 | |
|
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1999 for (e = old_version->callees; e; e=e->next_callee) |
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2000 if (!bbs_to_copy |
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2001 || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) |
|
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2002 cgraph_clone_edge (e, new_version, e->call_stmt, |
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2003 e->lto_stmt_uid, REG_BR_PROB_BASE, |
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2004 CGRAPH_FREQ_BASE, |
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2005 e->loop_nest, true); |
|
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2006 for (e = old_version->indirect_calls; e; e=e->next_callee) |
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2007 if (!bbs_to_copy |
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2008 || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) |
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2009 cgraph_clone_edge (e, new_version, e->call_stmt, |
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2010 e->lto_stmt_uid, REG_BR_PROB_BASE, |
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2011 CGRAPH_FREQ_BASE, |
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2012 e->loop_nest, true); |
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2013 FOR_EACH_VEC_ELT (cgraph_edge_p, redirect_callers, i, e) |
| 0 | 2014 { |
| 2015 /* Redirect calls to the old version node to point to its new | |
| 2016 version. */ | |
| 2017 cgraph_redirect_edge_callee (e, new_version); | |
| 2018 } | |
| 2019 | |
| 2020 return new_version; | |
| 2021 } | |
| 2022 | |
| 2023 /* Perform function versioning. | |
| 2024 Function versioning includes copying of the tree and | |
| 2025 a callgraph update (creating a new cgraph node and updating | |
| 2026 its callees and callers). | |
| 2027 | |
| 2028 REDIRECT_CALLERS varray includes the edges to be redirected | |
| 2029 to the new version. | |
| 2030 | |
| 2031 TREE_MAP is a mapping of tree nodes we want to replace with | |
| 2032 new ones (according to results of prior analysis). | |
| 2033 OLD_VERSION_NODE is the node that is versioned. | |
|
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2034 It returns the new version's cgraph node. |
|
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2035 If non-NULL ARGS_TO_SKIP determine function parameters to remove |
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2036 from new version. |
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2037 If non-NULL BLOCK_TO_COPY determine what basic blocks to copy. |
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2038 If non_NULL NEW_ENTRY determine new entry BB of the clone. */ |
| 0 | 2039 |
| 2040 struct cgraph_node * | |
| 2041 cgraph_function_versioning (struct cgraph_node *old_version_node, | |
| 2042 VEC(cgraph_edge_p,heap) *redirect_callers, | |
|
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2043 VEC (ipa_replace_map_p,gc)* tree_map, |
|
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2044 bitmap args_to_skip, |
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2045 bitmap bbs_to_copy, |
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2046 basic_block new_entry_block, |
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2047 const char *clone_name) |
| 0 | 2048 { |
| 2049 tree old_decl = old_version_node->decl; | |
| 2050 struct cgraph_node *new_version_node = NULL; | |
| 2051 tree new_decl; | |
| 2052 | |
| 2053 if (!tree_versionable_function_p (old_decl)) | |
| 2054 return NULL; | |
| 2055 | |
|
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2056 gcc_assert (old_version_node->local.can_change_signature || !args_to_skip); |
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2057 |
| 0 | 2058 /* Make a new FUNCTION_DECL tree node for the |
| 2059 new version. */ | |
| 2060 if (!args_to_skip) | |
| 2061 new_decl = copy_node (old_decl); | |
| 2062 else | |
| 2063 new_decl = build_function_decl_skip_args (old_decl, args_to_skip); | |
| 2064 | |
|
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2065 /* Generate a new name for the new version. */ |
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2066 DECL_NAME (new_decl) = clone_function_name (old_decl, clone_name); |
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2067 SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl)); |
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2068 SET_DECL_RTL (new_decl, NULL); |
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2069 |
| 0 | 2070 /* Create the new version's call-graph node. |
| 2071 and update the edges of the new node. */ | |
| 2072 new_version_node = | |
| 2073 cgraph_copy_node_for_versioning (old_version_node, new_decl, | |
|
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2074 redirect_callers, bbs_to_copy); |
| 0 | 2075 |
| 2076 /* Copy the OLD_VERSION_NODE function tree to the new version. */ | |
|
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2077 tree_function_versioning (old_decl, new_decl, tree_map, false, args_to_skip, |
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2078 bbs_to_copy, new_entry_block); |
| 0 | 2079 |
| 2080 /* Update the new version's properties. | |
| 2081 Make The new version visible only within this translation unit. Make sure | |
| 2082 that is not weak also. | |
| 2083 ??? We cannot use COMDAT linkage because there is no | |
| 2084 ABI support for this. */ | |
|
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2085 cgraph_make_decl_local (new_version_node->decl); |
| 0 | 2086 DECL_VIRTUAL_P (new_version_node->decl) = 0; |
| 2087 new_version_node->local.externally_visible = 0; | |
| 2088 new_version_node->local.local = 1; | |
| 2089 new_version_node->lowered = true; | |
| 2090 | |
| 2091 /* Update the call_expr on the edges to call the new version node. */ | |
| 2092 update_call_expr (new_version_node); | |
|
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2093 |
| 0 | 2094 cgraph_call_function_insertion_hooks (new_version_node); |
| 2095 return new_version_node; | |
| 2096 } | |
| 2097 | |
| 2098 /* Produce separate function body for inline clones so the offline copy can be | |
| 2099 modified without affecting them. */ | |
| 2100 struct cgraph_node * | |
| 2101 save_inline_function_body (struct cgraph_node *node) | |
| 2102 { | |
|
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2103 struct cgraph_node *first_clone, *n; |
| 0 | 2104 |
| 2105 gcc_assert (node == cgraph_node (node->decl)); | |
| 2106 | |
| 2107 cgraph_lower_function (node); | |
| 2108 | |
|
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2109 first_clone = node->clones; |
| 0 | 2110 |
| 2111 first_clone->decl = copy_node (node->decl); | |
| 2112 cgraph_insert_node_to_hashtable (first_clone); | |
| 2113 gcc_assert (first_clone == cgraph_node (first_clone->decl)); | |
|
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2114 if (first_clone->next_sibling_clone) |
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2115 { |
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2116 for (n = first_clone->next_sibling_clone; n->next_sibling_clone; n = n->next_sibling_clone) |
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2117 n->clone_of = first_clone; |
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2118 n->clone_of = first_clone; |
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2119 n->next_sibling_clone = first_clone->clones; |
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2120 if (first_clone->clones) |
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2121 first_clone->clones->prev_sibling_clone = n; |
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2122 first_clone->clones = first_clone->next_sibling_clone; |
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2123 first_clone->next_sibling_clone->prev_sibling_clone = NULL; |
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changeset
|
2124 first_clone->next_sibling_clone = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2125 gcc_assert (!first_clone->prev_sibling_clone); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2126 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2127 first_clone->clone_of = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2128 node->clones = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2129 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2130 if (first_clone->clones) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2131 for (n = first_clone->clones; n != first_clone;) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2132 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2133 gcc_assert (n->decl == node->decl); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2134 n->decl = first_clone->decl; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2135 if (n->clones) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2136 n = n->clones; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2137 else if (n->next_sibling_clone) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2138 n = n->next_sibling_clone; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2139 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2140 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2141 while (n != first_clone && !n->next_sibling_clone) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2142 n = n->clone_of; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2143 if (n != first_clone) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2144 n = n->next_sibling_clone; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2145 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2146 } |
| 0 | 2147 |
| 2148 /* Copy the OLD_VERSION_NODE function tree to the new version. */ | |
|
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
|
2149 tree_function_versioning (node->decl, first_clone->decl, NULL, true, NULL, |
|
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
|
2150 NULL, NULL); |
| 0 | 2151 |
| 2152 DECL_EXTERNAL (first_clone->decl) = 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2153 DECL_COMDAT_GROUP (first_clone->decl) = NULL_TREE; |
| 0 | 2154 TREE_PUBLIC (first_clone->decl) = 0; |
| 2155 DECL_COMDAT (first_clone->decl) = 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2156 VEC_free (ipa_opt_pass, heap, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2157 first_clone->ipa_transforms_to_apply); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2158 first_clone->ipa_transforms_to_apply = NULL; |
| 0 | 2159 |
| 2160 #ifdef ENABLE_CHECKING | |
| 2161 verify_cgraph_node (first_clone); | |
| 2162 #endif | |
| 2163 return first_clone; | |
| 2164 } | |
| 2165 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2166 /* Given virtual clone, turn it into actual clone. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2167 static void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2168 cgraph_materialize_clone (struct cgraph_node *node) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2169 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2170 bitmap_obstack_initialize (NULL); |
|
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
|
2171 node->former_clone_of = node->clone_of->decl; |
|
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
|
2172 if (node->clone_of->former_clone_of) |
|
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
|
2173 node->former_clone_of = node->clone_of->former_clone_of; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2174 /* Copy the OLD_VERSION_NODE function tree to the new version. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2175 tree_function_versioning (node->clone_of->decl, node->decl, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2176 node->clone.tree_map, true, |
|
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
|
2177 node->clone.args_to_skip, NULL, NULL); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2178 if (cgraph_dump_file) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2179 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2180 dump_function_to_file (node->clone_of->decl, cgraph_dump_file, dump_flags); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2181 dump_function_to_file (node->decl, cgraph_dump_file, dump_flags); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2182 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2183 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2184 /* Function is no longer clone. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2185 if (node->next_sibling_clone) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2186 node->next_sibling_clone->prev_sibling_clone = node->prev_sibling_clone; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2187 if (node->prev_sibling_clone) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2188 node->prev_sibling_clone->next_sibling_clone = node->next_sibling_clone; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2189 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2190 node->clone_of->clones = node->next_sibling_clone; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2191 node->next_sibling_clone = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2192 node->prev_sibling_clone = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2193 if (!node->clone_of->analyzed && !node->clone_of->clones) |
|
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
|
2194 { |
|
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
|
2195 cgraph_release_function_body (node->clone_of); |
|
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
|
2196 cgraph_node_remove_callees (node->clone_of); |
|
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
|
2197 ipa_remove_all_references (&node->clone_of->ref_list); |
|
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
|
2198 } |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2199 node->clone_of = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2200 bitmap_obstack_release (NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2201 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2202 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2203 /* If necessary, change the function declaration in the call statement |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2204 associated with E so that it corresponds to the edge callee. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2205 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2206 gimple |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2207 cgraph_redirect_edge_call_stmt_to_callee (struct cgraph_edge *e) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2208 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2209 tree decl = gimple_call_fndecl (e->call_stmt); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2210 gimple new_stmt; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2211 gimple_stmt_iterator gsi; |
|
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
|
2212 bool gsi_computed = false; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2213 #ifdef ENABLE_CHECKING |
|
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
|
2214 struct cgraph_node *node; |
|
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
|
2215 #endif |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2216 |
|
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
|
2217 if (e->indirect_unknown_callee |
|
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
|
2218 || decl == e->callee->decl |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2219 /* Don't update call from same body alias to the real function. */ |
|
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
|
2220 || (decl && cgraph_get_node (decl) == cgraph_get_node (e->callee->decl))) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2221 return e->call_stmt; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2222 |
|
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
|
2223 #ifdef ENABLE_CHECKING |
|
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
|
2224 if (decl) |
|
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
|
2225 { |
|
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
|
2226 node = cgraph_get_node (decl); |
|
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
|
2227 gcc_assert (!node || !node->clone.combined_args_to_skip); |
|
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
|
2228 } |
|
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
|
2229 #endif |
|
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
|
2230 |
|
63
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diff
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|
2231 if (cgraph_dump_file) |
|
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diff
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|
2232 { |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2233 fprintf (cgraph_dump_file, "updating call of %s/%i -> %s/%i: ", |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2234 cgraph_node_name (e->caller), e->caller->uid, |
|
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diff
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|
2235 cgraph_node_name (e->callee), e->callee->uid); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2236 print_gimple_stmt (cgraph_dump_file, e->call_stmt, 0, dump_flags); |
|
67
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diff
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|
2237 if (e->callee->clone.combined_args_to_skip) |
|
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diff
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|
2238 { |
|
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diff
changeset
|
2239 fprintf (cgraph_dump_file, " combined args to skip: "); |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
2240 dump_bitmap (cgraph_dump_file, |
|
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diff
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2241 e->callee->clone.combined_args_to_skip); |
|
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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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|
2242 } |
|
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2243 } |
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|
2244 |
|
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|
2245 if (e->indirect_info && |
|
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diff
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|
2246 e->indirect_info->thunk_delta != 0 |
|
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|
2247 && (!e->callee->clone.combined_args_to_skip |
|
f6334be47118
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diff
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2248 || !bitmap_bit_p (e->callee->clone.combined_args_to_skip, 0))) |
|
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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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diff
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|
2249 { |
|
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|
2250 if (cgraph_dump_file) |
|
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diff
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|
2251 fprintf (cgraph_dump_file, " Thunk delta is " |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
2252 HOST_WIDE_INT_PRINT_DEC "\n", e->indirect_info->thunk_delta); |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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2253 gsi = gsi_for_stmt (e->call_stmt); |
|
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|
2254 gsi_computed = true; |
|
f6334be47118
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diff
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|
2255 gimple_adjust_this_by_delta (&gsi, |
|
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|
2256 build_int_cst (sizetype, |
|
f6334be47118
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changeset
|
2257 e->indirect_info->thunk_delta)); |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
2258 e->indirect_info->thunk_delta = 0; |
|
63
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|
2259 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2260 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2261 if (e->callee->clone.combined_args_to_skip) |
|
67
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|
2262 { |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
2263 int lp_nr; |
|
f6334be47118
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|
2264 |
|
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diff
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|
2265 new_stmt |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
2266 = gimple_call_copy_skip_args (e->call_stmt, |
|
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diff
changeset
|
2267 e->callee->clone.combined_args_to_skip); |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
2268 gimple_call_set_fndecl (new_stmt, e->callee->decl); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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|
2269 |
|
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|
2270 if (gimple_vdef (new_stmt) |
|
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|
2271 && TREE_CODE (gimple_vdef (new_stmt)) == SSA_NAME) |
|
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diff
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|
2272 SSA_NAME_DEF_STMT (gimple_vdef (new_stmt)) = new_stmt; |
|
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diff
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|
2273 |
|
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|
2274 if (!gsi_computed) |
|
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diff
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|
2275 gsi = gsi_for_stmt (e->call_stmt); |
|
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|
2276 gsi_replace (&gsi, new_stmt, false); |
|
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diff
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|
2277 /* We need to defer cleaning EH info on the new statement to |
|
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diff
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|
2278 fixup-cfg. We may not have dominator information at this point |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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63
diff
changeset
|
2279 and thus would end up with unreachable blocks and have no way |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
2280 to communicate that we need to run CFG cleanup then. */ |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
2281 lp_nr = lookup_stmt_eh_lp (e->call_stmt); |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
2282 if (lp_nr != 0) |
|
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diff
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|
2283 { |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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63
diff
changeset
|
2284 remove_stmt_from_eh_lp (e->call_stmt); |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
2285 add_stmt_to_eh_lp (new_stmt, lp_nr); |
|
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|
2286 } |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
changeset
|
2287 } |
|
63
b7f97abdc517
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diff
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|
2288 else |
|
67
f6334be47118
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diff
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|
2289 { |
|
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diff
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|
2290 new_stmt = e->call_stmt; |
|
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diff
changeset
|
2291 gimple_call_set_fndecl (new_stmt, e->callee->decl); |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
2292 update_stmt (new_stmt); |
|
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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
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diff
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|
2293 } |
|
63
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diff
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|
2294 |
|
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diff
changeset
|
2295 cgraph_set_call_stmt_including_clones (e->caller, e->call_stmt, new_stmt); |
|
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diff
changeset
|
2296 |
|
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diff
changeset
|
2297 if (cgraph_dump_file) |
|
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diff
changeset
|
2298 { |
|
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diff
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|
2299 fprintf (cgraph_dump_file, " updated to:"); |
|
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diff
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|
2300 print_gimple_stmt (cgraph_dump_file, e->call_stmt, 0, dump_flags); |
|
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diff
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|
2301 } |
|
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diff
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|
2302 return new_stmt; |
|
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diff
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|
2303 } |
|
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diff
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|
2304 |
|
55
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36
diff
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|
2305 /* Once all functions from compilation unit are in memory, produce all clones |
|
63
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diff
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|
2306 and update all calls. We might also do this on demand if we don't want to |
|
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diff
changeset
|
2307 bring all functions to memory prior compilation, but current WHOPR |
|
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55
diff
changeset
|
2308 implementation does that and it is is bit easier to keep everything right in |
|
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diff
changeset
|
2309 this order. */ |
|
55
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diff
changeset
|
2310 void |
|
77e2b8dfacca
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36
diff
changeset
|
2311 cgraph_materialize_all_clones (void) |
|
77e2b8dfacca
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diff
changeset
|
2312 { |
|
77e2b8dfacca
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diff
changeset
|
2313 struct cgraph_node *node; |
|
77e2b8dfacca
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diff
changeset
|
2314 bool stabilized = false; |
|
77e2b8dfacca
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diff
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|
2315 |
|
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diff
changeset
|
2316 if (cgraph_dump_file) |
|
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diff
changeset
|
2317 fprintf (cgraph_dump_file, "Materializing clones\n"); |
|
77e2b8dfacca
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36
diff
changeset
|
2318 #ifdef ENABLE_CHECKING |
|
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diff
changeset
|
2319 verify_cgraph (); |
|
77e2b8dfacca
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diff
changeset
|
2320 #endif |
|
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36
diff
changeset
|
2321 |
|
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36
diff
changeset
|
2322 /* We can also do topological order, but number of iterations should be |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2323 bounded by number of IPA passes since single IPA pass is probably not |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2324 going to create clones of clones it created itself. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2325 while (!stabilized) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2326 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2327 stabilized = true; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2328 for (node = cgraph_nodes; node; node = node->next) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2329 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2330 if (node->clone_of && node->decl != node->clone_of->decl |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2331 && !gimple_has_body_p (node->decl)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2332 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2333 if (gimple_has_body_p (node->clone_of->decl)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2334 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2335 if (cgraph_dump_file) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2336 { |
|
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
|
2337 fprintf (cgraph_dump_file, "cloning %s to %s\n", |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2338 cgraph_node_name (node->clone_of), |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2339 cgraph_node_name (node)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2340 if (node->clone.tree_map) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2341 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2342 unsigned int i; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2343 fprintf (cgraph_dump_file, " replace map: "); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2344 for (i = 0; i < VEC_length (ipa_replace_map_p, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2345 node->clone.tree_map); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2346 i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2347 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2348 struct ipa_replace_map *replace_info; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2349 replace_info = VEC_index (ipa_replace_map_p, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2350 node->clone.tree_map, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2351 i); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2352 print_generic_expr (cgraph_dump_file, replace_info->old_tree, 0); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2353 fprintf (cgraph_dump_file, " -> "); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2354 print_generic_expr (cgraph_dump_file, replace_info->new_tree, 0); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2355 fprintf (cgraph_dump_file, "%s%s;", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2356 replace_info->replace_p ? "(replace)":"", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2357 replace_info->ref_p ? "(ref)":""); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2358 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2359 fprintf (cgraph_dump_file, "\n"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2360 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2361 if (node->clone.args_to_skip) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2362 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2363 fprintf (cgraph_dump_file, " args_to_skip: "); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2364 dump_bitmap (cgraph_dump_file, node->clone.args_to_skip); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2365 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2366 if (node->clone.args_to_skip) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2367 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2368 fprintf (cgraph_dump_file, " combined_args_to_skip:"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2369 dump_bitmap (cgraph_dump_file, node->clone.combined_args_to_skip); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2370 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2371 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2372 cgraph_materialize_clone (node); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2373 stabilized = false; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2374 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2375 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2376 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2377 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2378 for (node = cgraph_nodes; node; node = node->next) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2379 if (!node->analyzed && node->callees) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2380 cgraph_node_remove_callees (node); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2381 if (cgraph_dump_file) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2382 fprintf (cgraph_dump_file, "Materialization Call site updates done.\n"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2383 #ifdef ENABLE_CHECKING |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2384 verify_cgraph (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2385 #endif |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2386 cgraph_remove_unreachable_nodes (false, cgraph_dump_file); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2387 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
2388 |
| 0 | 2389 #include "gt-cgraphunit.h" |