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a418679d | 1 | /* Callgraph based interprocedural optimizations. |
d06865bf DK |
2 | Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
3 | 2011 Free Software Foundation, Inc. | |
1c4a429a JH |
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 | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
1c4a429a JH |
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 | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
1c4a429a | 21 | |
18c6ada9 | 22 | /* This module implements main driver of compilation process as well as |
a418679d | 23 | few basic interprocedural optimizers. |
18c6ada9 JH |
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 | ||
efe75b6f JH |
35 | (There is one exception needed for implementing GCC extern inline |
36 | function.) | |
18c6ada9 | 37 | |
8a4a83ed | 38 | - varpool_finalize_variable |
18c6ada9 | 39 | |
1ae58c30 | 40 | This function has same behavior as the above but is used for static |
18c6ada9 JH |
41 | variables. |
42 | ||
43 | - cgraph_finalize_compilation_unit | |
44 | ||
efe75b6f JH |
45 | This function is called once (source level) compilation unit is finalized |
46 | and it will no longer change. | |
18c6ada9 | 47 | |
dd5a833e MS |
48 | In the call-graph construction and local function analysis takes |
49 | place here. Bodies of unreachable functions are released to | |
50 | conserve memory usage. | |
18c6ada9 | 51 | |
efe75b6f JH |
52 | The function can be called multiple times when multiple source level |
53 | compilation units are combined (such as in C frontend) | |
18c6ada9 JH |
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 | ||
18c6ada9 | 62 | - cgraph_mark_needed_node |
8a4a83ed | 63 | - varpool_mark_needed_node |
18c6ada9 | 64 | |
efe75b6f JH |
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 | |
dbb23ff7 | 69 | used by C++ frontend to explicitly mark the keyed methods. |
18c6ada9 JH |
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 | ||
7e8b322a | 80 | Analyzing of all functions is deferred |
18c6ada9 JH |
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 | ||
e1990f69 | 91 | The intra-procedural information is produced and its existence |
18c6ada9 JH |
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 | |
7e8b322a | 106 | where reference has been optimized out. */ |
9b3e897d | 107 | |
6674a6ce | 108 | |
1c4a429a JH |
109 | #include "config.h" |
110 | #include "system.h" | |
111 | #include "coretypes.h" | |
112 | #include "tm.h" | |
113 | #include "tree.h" | |
c9b9aa64 | 114 | #include "rtl.h" |
6674a6ce | 115 | #include "tree-flow.h" |
1c4a429a JH |
116 | #include "tree-inline.h" |
117 | #include "langhooks.h" | |
0c58f841 | 118 | #include "pointer-set.h" |
1c4a429a JH |
119 | #include "toplev.h" |
120 | #include "flags.h" | |
121 | #include "ggc.h" | |
122 | #include "debug.h" | |
123 | #include "target.h" | |
124 | #include "cgraph.h" | |
dafc5b82 | 125 | #include "diagnostic.h" |
cf835838 JM |
126 | #include "tree-pretty-print.h" |
127 | #include "gimple-pretty-print.h" | |
a194aa56 | 128 | #include "timevar.h" |
b58b1157 JH |
129 | #include "params.h" |
130 | #include "fibheap.h" | |
dc0bfe6a | 131 | #include "intl.h" |
902edd36 | 132 | #include "function.h" |
57fb5341 | 133 | #include "ipa-prop.h" |
726a989a RB |
134 | #include "gimple.h" |
135 | #include "tree-iterator.h" | |
b4861090 | 136 | #include "tree-pass.h" |
a406865a | 137 | #include "tree-dump.h" |
cd9c7bd2 | 138 | #include "output.h" |
3baf459d | 139 | #include "coverage.h" |
090fa0ab | 140 | #include "plugin.h" |
632b4f8e | 141 | #include "ipa-inline.h" |
af8bca3c | 142 | #include "ipa-utils.h" |
47c79d56 | 143 | #include "lto-streamer.h" |
b58b1157 | 144 | |
a20af5b8 | 145 | static void cgraph_expand_all_functions (void); |
db0e878d AJ |
146 | static void cgraph_mark_functions_to_output (void); |
147 | static void cgraph_expand_function (struct cgraph_node *); | |
21c4a6a7 | 148 | static void cgraph_output_pending_asms (void); |
7dff32e6 | 149 | |
0a5fa5a1 | 150 | FILE *cgraph_dump_file; |
9b3e897d | 151 | |
6744a6ab JH |
152 | /* Used for vtable lookup in thunk adjusting. */ |
153 | static GTY (()) tree vtable_entry_type; | |
154 | ||
8dafba3c RH |
155 | /* Determine if function DECL is needed. That is, visible to something |
156 | either outside this translation unit, something magic in the system | |
7e8b322a | 157 | configury. */ |
8dafba3c | 158 | |
d7f09764 DN |
159 | bool |
160 | cgraph_decide_is_function_needed (struct cgraph_node *node, tree decl) | |
8dafba3c | 161 | { |
e7d6beb0 | 162 | /* If the user told us it is used, then it must be so. */ |
386b46cf JH |
163 | if (node->local.externally_visible) |
164 | return true; | |
165 | ||
e7d6beb0 JH |
166 | /* ??? If the assembler name is set by hand, it is possible to assemble |
167 | the name later after finalizing the function and the fact is noticed | |
168 | in assemble_name then. This is arguably a bug. */ | |
169 | if (DECL_ASSEMBLER_NAME_SET_P (decl) | |
39e2db00 | 170 | && (!node->thunk.thunk_p && !node->same_body_alias) |
e7d6beb0 JH |
171 | && TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
172 | return true; | |
173 | ||
a1d31187 JH |
174 | /* With -fkeep-inline-functions we are keeping all inline functions except |
175 | for extern inline ones. */ | |
176 | if (flag_keep_inline_functions | |
177 | && DECL_DECLARED_INLINE_P (decl) | |
b521dcbe | 178 | && !DECL_EXTERNAL (decl) |
e7f23018 | 179 | && !DECL_DISREGARD_INLINE_LIMITS (decl)) |
a1d31187 JH |
180 | return true; |
181 | ||
8dafba3c RH |
182 | /* If we decided it was needed before, but at the time we didn't have |
183 | the body of the function available, then it's still needed. We have | |
184 | to go back and re-check its dependencies now. */ | |
185 | if (node->needed) | |
186 | return true; | |
187 | ||
188 | /* Externally visible functions must be output. The exception is | |
c22cacf3 | 189 | COMDAT functions that must be output only when they are needed. |
04f77d0f JH |
190 | |
191 | When not optimizing, also output the static functions. (see | |
46f5f7f2 | 192 | PR24561), but don't do so for always_inline functions, functions |
c5d01958 | 193 | declared inline and nested functions. These were optimized out |
b633db7b | 194 | in the original implementation and it is unclear whether we want |
6fc0bb99 | 195 | to change the behavior here. */ |
5d342ef9 | 196 | if (((TREE_PUBLIC (decl) |
c5d01958 | 197 | || (!optimize |
e7f23018 | 198 | && !DECL_DISREGARD_INLINE_LIMITS (decl) |
b633db7b | 199 | && !DECL_DECLARED_INLINE_P (decl) |
c5d01958 EB |
200 | && !(DECL_CONTEXT (decl) |
201 | && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL))) | |
b20996ff | 202 | && !flag_whole_program |
014d92e1 | 203 | && !flag_lto) |
ce91e74c | 204 | && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) |
8dafba3c RH |
205 | return true; |
206 | ||
8dafba3c RH |
207 | return false; |
208 | } | |
209 | ||
d60ab196 | 210 | /* Process CGRAPH_NEW_FUNCTIONS and perform actions necessary to add these |
f45e0ad1 JH |
211 | functions into callgraph in a way so they look like ordinary reachable |
212 | functions inserted into callgraph already at construction time. */ | |
213 | ||
214 | bool | |
215 | cgraph_process_new_functions (void) | |
216 | { | |
217 | bool output = false; | |
218 | tree fndecl; | |
219 | struct cgraph_node *node; | |
220 | ||
2942c502 | 221 | varpool_analyze_pending_decls (); |
f45e0ad1 JH |
222 | /* Note that this queue may grow as its being processed, as the new |
223 | functions may generate new ones. */ | |
224 | while (cgraph_new_nodes) | |
225 | { | |
226 | node = cgraph_new_nodes; | |
227 | fndecl = node->decl; | |
228 | cgraph_new_nodes = cgraph_new_nodes->next_needed; | |
229 | switch (cgraph_state) | |
230 | { | |
231 | case CGRAPH_STATE_CONSTRUCTION: | |
232 | /* At construction time we just need to finalize function and move | |
233 | it into reachable functions list. */ | |
234 | ||
235 | node->next_needed = NULL; | |
236 | cgraph_finalize_function (fndecl, false); | |
237 | cgraph_mark_reachable_node (node); | |
238 | output = true; | |
4d5dcfb2 | 239 | cgraph_call_function_insertion_hooks (node); |
f45e0ad1 JH |
240 | break; |
241 | ||
242 | case CGRAPH_STATE_IPA: | |
7a388ee4 | 243 | case CGRAPH_STATE_IPA_SSA: |
f45e0ad1 JH |
244 | /* When IPA optimization already started, do all essential |
245 | transformations that has been already performed on the whole | |
246 | cgraph but not on this function. */ | |
247 | ||
726a989a | 248 | gimple_register_cfg_hooks (); |
f45e0ad1 JH |
249 | if (!node->analyzed) |
250 | cgraph_analyze_function (node); | |
251 | push_cfun (DECL_STRUCT_FUNCTION (fndecl)); | |
252 | current_function_decl = fndecl; | |
7a388ee4 JH |
253 | if ((cgraph_state == CGRAPH_STATE_IPA_SSA |
254 | && !gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl))) | |
255 | /* When not optimizing, be sure we run early local passes anyway | |
256 | to expand OMP. */ | |
257 | || !optimize) | |
8ddbbcae | 258 | execute_pass_list (pass_early_local_passes.pass.sub); |
bb7e6d55 | 259 | else |
632b4f8e | 260 | compute_inline_parameters (node, true); |
f45e0ad1 JH |
261 | free_dominance_info (CDI_POST_DOMINATORS); |
262 | free_dominance_info (CDI_DOMINATORS); | |
263 | pop_cfun (); | |
264 | current_function_decl = NULL; | |
4d5dcfb2 | 265 | cgraph_call_function_insertion_hooks (node); |
f45e0ad1 JH |
266 | break; |
267 | ||
268 | case CGRAPH_STATE_EXPANSION: | |
269 | /* Functions created during expansion shall be compiled | |
270 | directly. */ | |
257eb6e3 | 271 | node->process = 0; |
4d5dcfb2 | 272 | cgraph_call_function_insertion_hooks (node); |
f45e0ad1 JH |
273 | cgraph_expand_function (node); |
274 | break; | |
275 | ||
276 | default: | |
277 | gcc_unreachable (); | |
278 | break; | |
279 | } | |
2942c502 | 280 | varpool_analyze_pending_decls (); |
f45e0ad1 JH |
281 | } |
282 | return output; | |
283 | } | |
284 | ||
d71cc23f JH |
285 | /* As an GCC extension we allow redefinition of the function. The |
286 | semantics when both copies of bodies differ is not well defined. | |
287 | We replace the old body with new body so in unit at a time mode | |
288 | we always use new body, while in normal mode we may end up with | |
289 | old body inlined into some functions and new body expanded and | |
290 | inlined in others. | |
291 | ||
292 | ??? It may make more sense to use one body for inlining and other | |
293 | body for expanding the function but this is difficult to do. */ | |
294 | ||
295 | static void | |
296 | cgraph_reset_node (struct cgraph_node *node) | |
297 | { | |
257eb6e3 | 298 | /* If node->process is set, then we have already begun whole-unit analysis. |
7e8b322a JH |
299 | This is *not* testing for whether we've already emitted the function. |
300 | That case can be sort-of legitimately seen with real function redefinition | |
301 | errors. I would argue that the front end should never present us with | |
302 | such a case, but don't enforce that for now. */ | |
257eb6e3 | 303 | gcc_assert (!node->process); |
d71cc23f JH |
304 | |
305 | /* Reset our data structures so we can analyze the function again. */ | |
306 | memset (&node->local, 0, sizeof (node->local)); | |
307 | memset (&node->global, 0, sizeof (node->global)); | |
308 | memset (&node->rtl, 0, sizeof (node->rtl)); | |
309 | node->analyzed = false; | |
d71cc23f JH |
310 | node->local.finalized = false; |
311 | ||
d71cc23f | 312 | cgraph_node_remove_callees (node); |
d71cc23f | 313 | } |
d853a20e | 314 | |
953ff289 DN |
315 | static void |
316 | cgraph_lower_function (struct cgraph_node *node) | |
317 | { | |
318 | if (node->lowered) | |
319 | return; | |
a406865a RG |
320 | |
321 | if (node->nested) | |
322 | lower_nested_functions (node->decl); | |
323 | gcc_assert (!node->nested); | |
324 | ||
953ff289 DN |
325 | tree_lowering_passes (node->decl); |
326 | node->lowered = true; | |
327 | } | |
328 | ||
6b00c969 RH |
329 | /* DECL has been parsed. Take it, queue it, compile it at the whim of the |
330 | logic in effect. If NESTED is true, then our caller cannot stand to have | |
331 | the garbage collector run at the moment. We would need to either create | |
332 | a new GC context, or just not compile right now. */ | |
1c4a429a JH |
333 | |
334 | void | |
6b00c969 | 335 | cgraph_finalize_function (tree decl, bool nested) |
1c4a429a | 336 | { |
a358e188 | 337 | struct cgraph_node *node = cgraph_get_create_node (decl); |
1c4a429a | 338 | |
d853a20e | 339 | if (node->local.finalized) |
b125ad45 JH |
340 | { |
341 | cgraph_reset_node (node); | |
342 | node->local.redefined_extern_inline = true; | |
343 | } | |
6b00c969 | 344 | |
d853a20e | 345 | notice_global_symbol (decl); |
f6981e16 | 346 | node->local.finalized = true; |
e21aff8a | 347 | node->lowered = DECL_STRUCT_FUNCTION (decl)->cfg != NULL; |
1c4a429a | 348 | |
d7f09764 | 349 | if (cgraph_decide_is_function_needed (node, decl)) |
8dafba3c RH |
350 | cgraph_mark_needed_node (node); |
351 | ||
ff5c4582 | 352 | /* Since we reclaim unreachable nodes at the end of every language |
e7d6beb0 JH |
353 | level unit, we need to be conservative about possible entry points |
354 | there. */ | |
508e4757 JH |
355 | if ((TREE_PUBLIC (decl) && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) |
356 | || DECL_STATIC_CONSTRUCTOR (decl) | |
9b389a5e JH |
357 | || DECL_STATIC_DESTRUCTOR (decl) |
358 | /* COMDAT virtual functions may be referenced by vtable from | |
61502ca8 | 359 | other compilation unit. Still we want to devirtualize calls |
9b389a5e JH |
360 | to those so we need to analyze them. |
361 | FIXME: We should introduce may edges for this purpose and update | |
362 | their handling in unreachable function removal and inliner too. */ | |
c47d0034 JH |
363 | || (DECL_VIRTUAL_P (decl) |
364 | && optimize && (DECL_COMDAT (decl) || DECL_EXTERNAL (decl)))) | |
e7d6beb0 JH |
365 | cgraph_mark_reachable_node (node); |
366 | ||
8dafba3c | 367 | /* If we've not yet emitted decl, tell the debug info about it. */ |
6b00c969 | 368 | if (!TREE_ASM_WRITTEN (decl)) |
8dafba3c | 369 | (*debug_hooks->deferred_inline_function) (decl); |
d173e685 | 370 | |
902edd36 JH |
371 | /* Possibly warn about unused parameters. */ |
372 | if (warn_unused_parameter) | |
373 | do_warn_unused_parameter (decl); | |
7e8b322a JH |
374 | |
375 | if (!nested) | |
376 | ggc_collect (); | |
1c4a429a JH |
377 | } |
378 | ||
f0c882ab JH |
379 | /* C99 extern inline keywords allow changing of declaration after function |
380 | has been finalized. We need to re-decide if we want to mark the function as | |
381 | needed then. */ | |
382 | ||
383 | void | |
384 | cgraph_mark_if_needed (tree decl) | |
385 | { | |
581985d7 | 386 | struct cgraph_node *node = cgraph_get_node (decl); |
d7f09764 | 387 | if (node->local.finalized && cgraph_decide_is_function_needed (node, decl)) |
f0c882ab JH |
388 | cgraph_mark_needed_node (node); |
389 | } | |
390 | ||
9187e02d JH |
391 | /* Return TRUE if NODE2 is equivalent to NODE or its clone. */ |
392 | static bool | |
393 | clone_of_p (struct cgraph_node *node, struct cgraph_node *node2) | |
394 | { | |
39e2db00 JH |
395 | node = cgraph_function_or_thunk_node (node, NULL); |
396 | node2 = cgraph_function_or_thunk_node (node2, NULL); | |
9187e02d JH |
397 | while (node != node2 && node2) |
398 | node2 = node2->clone_of; | |
399 | return node2 != NULL; | |
400 | } | |
401 | ||
02ec6988 MJ |
402 | /* Verify edge E count and frequency. */ |
403 | ||
404 | static bool | |
405 | verify_edge_count_and_frequency (struct cgraph_edge *e) | |
406 | { | |
407 | bool error_found = false; | |
408 | if (e->count < 0) | |
409 | { | |
410 | error ("caller edge count is negative"); | |
411 | error_found = true; | |
412 | } | |
413 | if (e->frequency < 0) | |
414 | { | |
415 | error ("caller edge frequency is negative"); | |
416 | error_found = true; | |
417 | } | |
418 | if (e->frequency > CGRAPH_FREQ_MAX) | |
419 | { | |
420 | error ("caller edge frequency is too large"); | |
421 | error_found = true; | |
422 | } | |
423 | if (gimple_has_body_p (e->caller->decl) | |
424 | && !e->caller->global.inlined_to | |
74605a11 JH |
425 | /* FIXME: Inline-analysis sets frequency to 0 when edge is optimized out. |
426 | Remove this once edges are actualy removed from the function at that time. */ | |
427 | && (e->frequency | |
428 | || (inline_edge_summary_vec | |
429 | && !inline_edge_summary (e)->predicate)) | |
02ec6988 MJ |
430 | && (e->frequency |
431 | != compute_call_stmt_bb_frequency (e->caller->decl, | |
432 | gimple_bb (e->call_stmt)))) | |
433 | { | |
61502ca8 | 434 | error ("caller edge frequency %i does not match BB frequency %i", |
02ec6988 MJ |
435 | e->frequency, |
436 | compute_call_stmt_bb_frequency (e->caller->decl, | |
437 | gimple_bb (e->call_stmt))); | |
438 | error_found = true; | |
439 | } | |
440 | return error_found; | |
441 | } | |
442 | ||
89843f5d JJ |
443 | /* Switch to THIS_CFUN if needed and print STMT to stderr. */ |
444 | static void | |
445 | cgraph_debug_gimple_stmt (struct function *this_cfun, gimple stmt) | |
446 | { | |
447 | /* debug_gimple_stmt needs correct cfun */ | |
448 | if (cfun != this_cfun) | |
449 | set_cfun (this_cfun); | |
450 | debug_gimple_stmt (stmt); | |
451 | } | |
452 | ||
18c6ada9 | 453 | /* Verify cgraph nodes of given cgraph node. */ |
24e47c76 | 454 | DEBUG_FUNCTION void |
18c6ada9 JH |
455 | verify_cgraph_node (struct cgraph_node *node) |
456 | { | |
457 | struct cgraph_edge *e; | |
e21aff8a SB |
458 | struct function *this_cfun = DECL_STRUCT_FUNCTION (node->decl); |
459 | basic_block this_block; | |
726a989a | 460 | gimple_stmt_iterator gsi; |
e0704a46 | 461 | bool error_found = false; |
18c6ada9 | 462 | |
1da2ed5f | 463 | if (seen_error ()) |
5771bd91 RG |
464 | return; |
465 | ||
18c6ada9 | 466 | timevar_push (TV_CGRAPH_VERIFY); |
18c6ada9 JH |
467 | for (e = node->callees; e; e = e->next_callee) |
468 | if (e->aux) | |
469 | { | |
ab532386 | 470 | error ("aux field set for edge %s->%s", |
4f1e4960 JM |
471 | identifier_to_locale (cgraph_node_name (e->caller)), |
472 | identifier_to_locale (cgraph_node_name (e->callee))); | |
18c6ada9 JH |
473 | error_found = true; |
474 | } | |
06191a23 JH |
475 | if (node->count < 0) |
476 | { | |
d8a07487 | 477 | error ("execution count is negative"); |
06191a23 JH |
478 | error_found = true; |
479 | } | |
b20996ff JH |
480 | if (node->global.inlined_to && node->local.externally_visible) |
481 | { | |
d8a07487 | 482 | error ("externally visible inline clone"); |
b20996ff JH |
483 | error_found = true; |
484 | } | |
485 | if (node->global.inlined_to && node->address_taken) | |
486 | { | |
d8a07487 | 487 | error ("inline clone with address taken"); |
b20996ff JH |
488 | error_found = true; |
489 | } | |
490 | if (node->global.inlined_to && node->needed) | |
491 | { | |
d8a07487 | 492 | error ("inline clone is needed"); |
b20996ff JH |
493 | error_found = true; |
494 | } | |
e33c6cd6 MJ |
495 | for (e = node->indirect_calls; e; e = e->next_callee) |
496 | { | |
497 | if (e->aux) | |
498 | { | |
499 | error ("aux field set for indirect edge from %s", | |
500 | identifier_to_locale (cgraph_node_name (e->caller))); | |
501 | error_found = true; | |
502 | } | |
503 | if (!e->indirect_unknown_callee | |
504 | || !e->indirect_info) | |
505 | { | |
506 | error ("An indirect edge from %s is not marked as indirect or has " | |
507 | "associated indirect_info, the corresponding statement is: ", | |
508 | identifier_to_locale (cgraph_node_name (e->caller))); | |
89843f5d | 509 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
e33c6cd6 MJ |
510 | error_found = true; |
511 | } | |
512 | } | |
18c6ada9 JH |
513 | for (e = node->callers; e; e = e->next_caller) |
514 | { | |
02ec6988 MJ |
515 | if (verify_edge_count_and_frequency (e)) |
516 | error_found = true; | |
18c6ada9 JH |
517 | if (!e->inline_failed) |
518 | { | |
519 | if (node->global.inlined_to | |
520 | != (e->caller->global.inlined_to | |
521 | ? e->caller->global.inlined_to : e->caller)) | |
522 | { | |
ab532386 | 523 | error ("inlined_to pointer is wrong"); |
18c6ada9 JH |
524 | error_found = true; |
525 | } | |
526 | if (node->callers->next_caller) | |
527 | { | |
ab532386 | 528 | error ("multiple inline callers"); |
18c6ada9 JH |
529 | error_found = true; |
530 | } | |
531 | } | |
532 | else | |
533 | if (node->global.inlined_to) | |
534 | { | |
ab532386 | 535 | error ("inlined_to pointer set for noninline callers"); |
18c6ada9 JH |
536 | error_found = true; |
537 | } | |
538 | } | |
02ec6988 MJ |
539 | for (e = node->indirect_calls; e; e = e->next_callee) |
540 | if (verify_edge_count_and_frequency (e)) | |
541 | error_found = true; | |
18c6ada9 JH |
542 | if (!node->callers && node->global.inlined_to) |
543 | { | |
95a52ebb | 544 | error ("inlined_to pointer is set but no predecessors found"); |
18c6ada9 JH |
545 | error_found = true; |
546 | } | |
547 | if (node->global.inlined_to == node) | |
548 | { | |
ab532386 | 549 | error ("inlined_to pointer refers to itself"); |
18c6ada9 JH |
550 | error_found = true; |
551 | } | |
552 | ||
62ecfeb8 | 553 | if (!cgraph_get_node (node->decl)) |
18c6ada9 | 554 | { |
69fb1284 | 555 | error ("node not found in cgraph_hash"); |
18c6ada9 JH |
556 | error_found = true; |
557 | } | |
c22cacf3 | 558 | |
9187e02d JH |
559 | if (node->clone_of) |
560 | { | |
561 | struct cgraph_node *n; | |
562 | for (n = node->clone_of->clones; n; n = n->next_sibling_clone) | |
563 | if (n == node) | |
564 | break; | |
565 | if (!n) | |
566 | { | |
567 | error ("node has wrong clone_of"); | |
568 | error_found = true; | |
569 | } | |
570 | } | |
571 | if (node->clones) | |
572 | { | |
573 | struct cgraph_node *n; | |
574 | for (n = node->clones; n; n = n->next_sibling_clone) | |
575 | if (n->clone_of != node) | |
576 | break; | |
577 | if (n) | |
578 | { | |
579 | error ("node has wrong clone list"); | |
580 | error_found = true; | |
581 | } | |
582 | } | |
583 | if ((node->prev_sibling_clone || node->next_sibling_clone) && !node->clone_of) | |
584 | { | |
585 | error ("node is in clone list but it is not clone"); | |
586 | error_found = true; | |
587 | } | |
588 | if (!node->prev_sibling_clone && node->clone_of && node->clone_of->clones != node) | |
589 | { | |
590 | error ("node has wrong prev_clone pointer"); | |
591 | error_found = true; | |
592 | } | |
593 | if (node->prev_sibling_clone && node->prev_sibling_clone->next_sibling_clone != node) | |
594 | { | |
595 | error ("double linked list of clones corrupted"); | |
596 | error_found = true; | |
597 | } | |
78eaf7bf MJ |
598 | if (node->same_comdat_group) |
599 | { | |
600 | struct cgraph_node *n = node->same_comdat_group; | |
601 | ||
602 | if (!DECL_ONE_ONLY (node->decl)) | |
603 | { | |
604 | error ("non-DECL_ONE_ONLY node in a same_comdat_group list"); | |
605 | error_found = true; | |
606 | } | |
607 | if (n == node) | |
608 | { | |
609 | error ("node is alone in a comdat group"); | |
610 | error_found = true; | |
611 | } | |
612 | do | |
613 | { | |
614 | if (!n->same_comdat_group) | |
615 | { | |
616 | error ("same_comdat_group is not a circular list"); | |
617 | error_found = true; | |
618 | break; | |
619 | } | |
620 | n = n->same_comdat_group; | |
621 | } | |
622 | while (n != node); | |
623 | } | |
9187e02d | 624 | |
39e2db00 JH |
625 | if (node->analyzed && node->alias) |
626 | { | |
627 | bool ref_found = false; | |
628 | int i; | |
629 | struct ipa_ref *ref; | |
630 | ||
631 | if (node->callees) | |
632 | { | |
633 | error ("Alias has call edges"); | |
634 | error_found = true; | |
635 | } | |
636 | for (i = 0; ipa_ref_list_reference_iterate (&node->ref_list, i, ref); i++) | |
637 | if (ref->use != IPA_REF_ALIAS) | |
638 | { | |
639 | error ("Alias has non-alias refernece"); | |
640 | error_found = true; | |
641 | } | |
642 | else if (ref_found) | |
643 | { | |
644 | error ("Alias has more than one alias reference"); | |
645 | error_found = true; | |
646 | } | |
647 | else | |
648 | ref_found = true; | |
649 | if (!ref_found) | |
650 | { | |
651 | error ("Analyzed alias has no reference"); | |
652 | error_found = true; | |
653 | } | |
654 | } | |
c47d0034 JH |
655 | if (node->analyzed && node->thunk.thunk_p) |
656 | { | |
657 | if (!node->callees) | |
658 | { | |
659 | error ("No edge out of thunk node"); | |
660 | error_found = true; | |
661 | } | |
662 | else if (node->callees->next_callee) | |
663 | { | |
664 | error ("More than one edge out of thunk node"); | |
665 | error_found = true; | |
666 | } | |
667 | if (gimple_has_body_p (node->decl)) | |
668 | { | |
669 | error ("Thunk is not supposed to have body"); | |
670 | error_found = true; | |
671 | } | |
672 | } | |
673 | else if (node->analyzed && gimple_has_body_p (node->decl) | |
674 | && !TREE_ASM_WRITTEN (node->decl) | |
675 | && (!DECL_EXTERNAL (node->decl) || node->global.inlined_to) | |
676 | && !flag_wpa) | |
18c6ada9 | 677 | { |
e21aff8a SB |
678 | if (this_cfun->cfg) |
679 | { | |
680 | /* The nodes we're interested in are never shared, so walk | |
681 | the tree ignoring duplicates. */ | |
2dee695b | 682 | struct pointer_set_t *visited_nodes = pointer_set_create (); |
e21aff8a SB |
683 | /* Reach the trees by walking over the CFG, and note the |
684 | enclosing basic-blocks in the call edges. */ | |
685 | FOR_EACH_BB_FN (this_block, this_cfun) | |
726a989a RB |
686 | for (gsi = gsi_start_bb (this_block); |
687 | !gsi_end_p (gsi); | |
688 | gsi_next (&gsi)) | |
e0704a46 | 689 | { |
726a989a | 690 | gimple stmt = gsi_stmt (gsi); |
e33c6cd6 | 691 | if (is_gimple_call (stmt)) |
e0704a46 JH |
692 | { |
693 | struct cgraph_edge *e = cgraph_edge (node, stmt); | |
e33c6cd6 | 694 | tree decl = gimple_call_fndecl (stmt); |
e0704a46 JH |
695 | if (e) |
696 | { | |
697 | if (e->aux) | |
698 | { | |
ab532386 | 699 | error ("shared call_stmt:"); |
89843f5d | 700 | cgraph_debug_gimple_stmt (this_cfun, stmt); |
e0704a46 JH |
701 | error_found = true; |
702 | } | |
e33c6cd6 | 703 | if (!e->indirect_unknown_callee) |
6744a6ab | 704 | { |
39e2db00 JH |
705 | if (!e->callee->global.inlined_to |
706 | && decl | |
707 | && cgraph_get_node (decl) | |
708 | && (e->callee->former_clone_of | |
709 | != cgraph_get_node (decl)->decl) | |
710 | /* IPA-CP sometimes redirect edge to clone and then back to the former | |
711 | function. This ping-pong has to go, eventaully. */ | |
712 | && (cgraph_function_or_thunk_node (cgraph_get_node (decl), NULL) | |
713 | != cgraph_function_or_thunk_node (e->callee, NULL)) | |
714 | && !clone_of_p (cgraph_get_node (decl), | |
715 | e->callee)) | |
e33c6cd6 MJ |
716 | { |
717 | error ("edge points to wrong declaration:"); | |
718 | debug_tree (e->callee->decl); | |
719 | fprintf (stderr," Instead of:"); | |
720 | debug_tree (decl); | |
721 | error_found = true; | |
722 | } | |
6744a6ab | 723 | } |
e33c6cd6 | 724 | else if (decl) |
e0704a46 | 725 | { |
e33c6cd6 MJ |
726 | error ("an indirect edge with unknown callee " |
727 | "corresponding to a call_stmt with " | |
728 | "a known declaration:"); | |
47cb0d7d | 729 | error_found = true; |
89843f5d | 730 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
e0704a46 JH |
731 | } |
732 | e->aux = (void *)1; | |
733 | } | |
e33c6cd6 | 734 | else if (decl) |
e0704a46 | 735 | { |
ab532386 | 736 | error ("missing callgraph edge for call stmt:"); |
89843f5d | 737 | cgraph_debug_gimple_stmt (this_cfun, stmt); |
e0704a46 JH |
738 | error_found = true; |
739 | } | |
740 | } | |
741 | } | |
e21aff8a | 742 | pointer_set_destroy (visited_nodes); |
e21aff8a SB |
743 | } |
744 | else | |
745 | /* No CFG available?! */ | |
746 | gcc_unreachable (); | |
747 | ||
18c6ada9 JH |
748 | for (e = node->callees; e; e = e->next_callee) |
749 | { | |
e33c6cd6 | 750 | if (!e->aux) |
18c6ada9 | 751 | { |
ab532386 | 752 | error ("edge %s->%s has no corresponding call_stmt", |
4f1e4960 JM |
753 | identifier_to_locale (cgraph_node_name (e->caller)), |
754 | identifier_to_locale (cgraph_node_name (e->callee))); | |
89843f5d | 755 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
18c6ada9 JH |
756 | error_found = true; |
757 | } | |
758 | e->aux = 0; | |
759 | } | |
e33c6cd6 MJ |
760 | for (e = node->indirect_calls; e; e = e->next_callee) |
761 | { | |
762 | if (!e->aux) | |
763 | { | |
764 | error ("an indirect edge from %s has no corresponding call_stmt", | |
765 | identifier_to_locale (cgraph_node_name (e->caller))); | |
89843f5d | 766 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
e33c6cd6 MJ |
767 | error_found = true; |
768 | } | |
769 | e->aux = 0; | |
770 | } | |
18c6ada9 JH |
771 | } |
772 | if (error_found) | |
773 | { | |
774 | dump_cgraph_node (stderr, node); | |
ab532386 | 775 | internal_error ("verify_cgraph_node failed"); |
18c6ada9 JH |
776 | } |
777 | timevar_pop (TV_CGRAPH_VERIFY); | |
778 | } | |
779 | ||
780 | /* Verify whole cgraph structure. */ | |
24e47c76 | 781 | DEBUG_FUNCTION void |
18c6ada9 JH |
782 | verify_cgraph (void) |
783 | { | |
784 | struct cgraph_node *node; | |
785 | ||
1da2ed5f | 786 | if (seen_error ()) |
89480522 JH |
787 | return; |
788 | ||
18c6ada9 JH |
789 | for (node = cgraph_nodes; node; node = node->next) |
790 | verify_cgraph_node (node); | |
791 | } | |
792 | ||
474eccc6 ILT |
793 | /* Output all asm statements we have stored up to be output. */ |
794 | ||
795 | static void | |
796 | cgraph_output_pending_asms (void) | |
797 | { | |
798 | struct cgraph_asm_node *can; | |
799 | ||
1da2ed5f | 800 | if (seen_error ()) |
474eccc6 ILT |
801 | return; |
802 | ||
803 | for (can = cgraph_asm_nodes; can; can = can->next) | |
804 | assemble_asm (can->asm_str); | |
805 | cgraph_asm_nodes = NULL; | |
806 | } | |
807 | ||
e767b5be | 808 | /* Analyze the function scheduled to be output. */ |
322dd859 | 809 | void |
e767b5be JH |
810 | cgraph_analyze_function (struct cgraph_node *node) |
811 | { | |
a406865a | 812 | tree save = current_function_decl; |
e767b5be JH |
813 | tree decl = node->decl; |
814 | ||
39e2db00 JH |
815 | if (node->alias && node->thunk.alias) |
816 | { | |
817 | struct cgraph_node *tgt = cgraph_get_node (node->thunk.alias); | |
818 | if (!VEC_length (ipa_ref_t, node->ref_list.references)) | |
819 | ipa_record_reference (node, NULL, tgt, NULL, IPA_REF_ALIAS, NULL); | |
820 | if (node->same_body_alias) | |
821 | { | |
822 | DECL_VIRTUAL_P (node->decl) = DECL_VIRTUAL_P (node->thunk.alias); | |
823 | DECL_DECLARED_INLINE_P (node->decl) | |
824 | = DECL_DECLARED_INLINE_P (node->thunk.alias); | |
825 | DECL_DISREGARD_INLINE_LIMITS (node->decl) | |
826 | = DECL_DISREGARD_INLINE_LIMITS (node->thunk.alias); | |
827 | } | |
828 | ||
829 | /* Fixup visibility nonsences C++ frontend produce on same body aliases. */ | |
830 | if (TREE_PUBLIC (node->decl) && node->same_body_alias) | |
831 | { | |
832 | DECL_EXTERNAL (node->decl) = DECL_EXTERNAL (node->thunk.alias); | |
ee6f1177 | 833 | if (DECL_ONE_ONLY (node->thunk.alias)) |
39e2db00 | 834 | { |
ee6f1177 | 835 | DECL_COMDAT (node->decl) = DECL_COMDAT (node->thunk.alias); |
39e2db00 JH |
836 | DECL_COMDAT_GROUP (node->decl) = DECL_COMDAT_GROUP (node->thunk.alias); |
837 | if (DECL_ONE_ONLY (node->thunk.alias) && !node->same_comdat_group) | |
838 | { | |
839 | struct cgraph_node *tgt = cgraph_get_node (node->thunk.alias); | |
840 | node->same_comdat_group = tgt; | |
841 | if (!tgt->same_comdat_group) | |
842 | tgt->same_comdat_group = node; | |
843 | else | |
844 | { | |
845 | struct cgraph_node *n; | |
846 | for (n = tgt->same_comdat_group; | |
847 | n->same_comdat_group != tgt; | |
848 | n = n->same_comdat_group) | |
849 | ; | |
850 | n->same_comdat_group = node; | |
851 | } | |
852 | } | |
853 | } | |
854 | } | |
855 | cgraph_mark_reachable_node (cgraph_alias_aliased_node (node)); | |
856 | if (node->address_taken) | |
857 | cgraph_mark_address_taken_node (cgraph_alias_aliased_node (node)); | |
858 | if (cgraph_decide_is_function_needed (node, node->decl)) | |
859 | cgraph_mark_needed_node (node); | |
860 | } | |
861 | else if (node->thunk.thunk_p) | |
c47d0034 JH |
862 | { |
863 | cgraph_create_edge (node, cgraph_get_node (node->thunk.alias), | |
864 | NULL, 0, CGRAPH_FREQ_BASE); | |
865 | } | |
866 | else | |
867 | { | |
868 | current_function_decl = decl; | |
869 | push_cfun (DECL_STRUCT_FUNCTION (decl)); | |
a406865a | 870 | |
c47d0034 | 871 | assign_assembler_name_if_neeeded (node->decl); |
0e0a1359 | 872 | |
c47d0034 JH |
873 | /* Make sure to gimplify bodies only once. During analyzing a |
874 | function we lower it, which will require gimplified nested | |
875 | functions, so we can end up here with an already gimplified | |
876 | body. */ | |
877 | if (!gimple_body (decl)) | |
878 | gimplify_function_tree (decl); | |
879 | dump_function (TDI_generic, decl); | |
a406865a | 880 | |
c47d0034 JH |
881 | cgraph_lower_function (node); |
882 | pop_cfun (); | |
883 | } | |
6a84c098 | 884 | node->analyzed = true; |
e767b5be | 885 | |
a406865a | 886 | current_function_decl = save; |
e767b5be JH |
887 | } |
888 | ||
39e2db00 JH |
889 | /* C++ frontend produce same body aliases all over the place, even before PCH |
890 | gets streamed out. It relies on us linking the aliases with their function | |
891 | in order to do the fixups, but ipa-ref is not PCH safe. Consequentely we | |
892 | first produce aliases without links, but once C++ FE is sure he won't sream | |
893 | PCH we build the links via this function. */ | |
894 | ||
895 | void | |
896 | cgraph_process_same_body_aliases (void) | |
897 | { | |
898 | struct cgraph_node *node; | |
899 | for (node = cgraph_nodes; node; node = node->next) | |
900 | if (node->same_body_alias | |
901 | && !VEC_length (ipa_ref_t, node->ref_list.references)) | |
902 | { | |
903 | struct cgraph_node *tgt = cgraph_get_node (node->thunk.alias); | |
904 | ipa_record_reference (node, NULL, tgt, NULL, IPA_REF_ALIAS, NULL); | |
905 | } | |
906 | same_body_aliases_done = true; | |
907 | } | |
908 | ||
768e3c60 RG |
909 | /* Process attributes common for vars and functions. */ |
910 | ||
911 | static void | |
912 | process_common_attributes (tree decl) | |
913 | { | |
914 | tree weakref = lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)); | |
915 | ||
916 | if (weakref && !lookup_attribute ("alias", DECL_ATTRIBUTES (decl))) | |
917 | { | |
918 | warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, | |
919 | "%<weakref%> attribute should be accompanied with" | |
920 | " an %<alias%> attribute"); | |
921 | DECL_WEAK (decl) = 0; | |
779d4b91 JH |
922 | DECL_ATTRIBUTES (decl) = remove_attribute ("weakref", |
923 | DECL_ATTRIBUTES (decl)); | |
768e3c60 RG |
924 | } |
925 | } | |
926 | ||
386b46cf JH |
927 | /* Look for externally_visible and used attributes and mark cgraph nodes |
928 | accordingly. | |
929 | ||
930 | We cannot mark the nodes at the point the attributes are processed (in | |
931 | handle_*_attribute) because the copy of the declarations available at that | |
932 | point may not be canonical. For example, in: | |
933 | ||
934 | void f(); | |
935 | void f() __attribute__((used)); | |
936 | ||
937 | the declaration we see in handle_used_attribute will be the second | |
938 | declaration -- but the front end will subsequently merge that declaration | |
939 | with the original declaration and discard the second declaration. | |
940 | ||
941 | Furthermore, we can't mark these nodes in cgraph_finalize_function because: | |
942 | ||
943 | void f() {} | |
944 | void f() __attribute__((externally_visible)); | |
945 | ||
946 | is valid. | |
947 | ||
948 | So, we walk the nodes at the end of the translation unit, applying the | |
949 | attributes at that point. */ | |
950 | ||
951 | static void | |
952 | process_function_and_variable_attributes (struct cgraph_node *first, | |
8a4a83ed | 953 | struct varpool_node *first_var) |
386b46cf JH |
954 | { |
955 | struct cgraph_node *node; | |
8a4a83ed | 956 | struct varpool_node *vnode; |
386b46cf JH |
957 | |
958 | for (node = cgraph_nodes; node != first; node = node->next) | |
959 | { | |
960 | tree decl = node->decl; | |
b42186f1 | 961 | if (DECL_PRESERVE_P (decl)) |
152464d2 | 962 | cgraph_mark_needed_node (node); |
9d602c59 KT |
963 | if (TARGET_DLLIMPORT_DECL_ATTRIBUTES |
964 | && lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)) | |
965 | && TREE_PUBLIC (node->decl)) | |
966 | { | |
967 | if (node->local.finalized) | |
968 | cgraph_mark_needed_node (node); | |
969 | } | |
970 | else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl))) | |
386b46cf | 971 | { |
343d4b27 | 972 | if (! TREE_PUBLIC (node->decl)) |
c5d75364 MLI |
973 | warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes, |
974 | "%<externally_visible%>" | |
975 | " attribute have effect only on public objects"); | |
b20996ff JH |
976 | else if (node->local.finalized) |
977 | cgraph_mark_needed_node (node); | |
386b46cf | 978 | } |
779d4b91 | 979 | if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)) |
39e2db00 | 980 | && (node->local.finalized && !node->alias)) |
779d4b91 JH |
981 | { |
982 | warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes, | |
983 | "%<weakref%> attribute ignored" | |
984 | " because function is defined"); | |
985 | DECL_WEAK (decl) = 0; | |
986 | DECL_ATTRIBUTES (decl) = remove_attribute ("weakref", | |
987 | DECL_ATTRIBUTES (decl)); | |
988 | } | |
768e3c60 | 989 | process_common_attributes (decl); |
386b46cf | 990 | } |
8a4a83ed | 991 | for (vnode = varpool_nodes; vnode != first_var; vnode = vnode->next) |
386b46cf JH |
992 | { |
993 | tree decl = vnode->decl; | |
b42186f1 | 994 | if (DECL_PRESERVE_P (decl)) |
386b46cf | 995 | { |
a8289259 | 996 | vnode->force_output = true; |
386b46cf | 997 | if (vnode->finalized) |
8a4a83ed | 998 | varpool_mark_needed_node (vnode); |
386b46cf | 999 | } |
9d602c59 KT |
1000 | if (TARGET_DLLIMPORT_DECL_ATTRIBUTES |
1001 | && lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)) | |
9659ff6e | 1002 | && TREE_PUBLIC (vnode->decl)) |
9d602c59 KT |
1003 | { |
1004 | if (vnode->finalized) | |
1005 | varpool_mark_needed_node (vnode); | |
1006 | } | |
1007 | else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl))) | |
386b46cf | 1008 | { |
343d4b27 | 1009 | if (! TREE_PUBLIC (vnode->decl)) |
c5d75364 MLI |
1010 | warning_at (DECL_SOURCE_LOCATION (vnode->decl), OPT_Wattributes, |
1011 | "%<externally_visible%>" | |
1012 | " attribute have effect only on public objects"); | |
b20996ff JH |
1013 | else if (vnode->finalized) |
1014 | varpool_mark_needed_node (vnode); | |
386b46cf | 1015 | } |
779d4b91 JH |
1016 | if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)) |
1017 | && vnode->finalized | |
1018 | && DECL_INITIAL (decl)) | |
1019 | { | |
1020 | warning_at (DECL_SOURCE_LOCATION (vnode->decl), OPT_Wattributes, | |
1021 | "%<weakref%> attribute ignored" | |
1022 | " because variable is initialized"); | |
1023 | DECL_WEAK (decl) = 0; | |
1024 | DECL_ATTRIBUTES (decl) = remove_attribute ("weakref", | |
1025 | DECL_ATTRIBUTES (decl)); | |
1026 | } | |
768e3c60 | 1027 | process_common_attributes (decl); |
386b46cf JH |
1028 | } |
1029 | } | |
1030 | ||
151e6f24 JH |
1031 | /* Process CGRAPH_NODES_NEEDED queue, analyze each function (and transitively |
1032 | each reachable functions) and build cgraph. | |
1033 | The function can be called multiple times after inserting new nodes | |
88512ba0 | 1034 | into beginning of queue. Just the new part of queue is re-scanned then. */ |
1c4a429a | 1035 | |
151e6f24 JH |
1036 | static void |
1037 | cgraph_analyze_functions (void) | |
1c4a429a | 1038 | { |
cd9c7bd2 | 1039 | /* Keep track of already processed nodes when called multiple times for |
aabcd309 | 1040 | intermodule optimization. */ |
cd9c7bd2 | 1041 | static struct cgraph_node *first_analyzed; |
61e00a5e | 1042 | struct cgraph_node *first_processed = first_analyzed; |
8a4a83ed | 1043 | static struct varpool_node *first_analyzed_var; |
151e6f24 | 1044 | struct cgraph_node *node, *next; |
1c4a429a | 1045 | |
1389294c | 1046 | bitmap_obstack_initialize (NULL); |
61e00a5e JH |
1047 | process_function_and_variable_attributes (first_processed, |
1048 | first_analyzed_var); | |
1049 | first_processed = cgraph_nodes; | |
8a4a83ed JH |
1050 | first_analyzed_var = varpool_nodes; |
1051 | varpool_analyze_pending_decls (); | |
a194aa56 | 1052 | if (cgraph_dump_file) |
1c4a429a | 1053 | { |
7d82fe7c | 1054 | fprintf (cgraph_dump_file, "Initial entry points:"); |
cd9c7bd2 | 1055 | for (node = cgraph_nodes; node != first_analyzed; node = node->next) |
39ecc018 | 1056 | if (node->needed) |
a194aa56 JH |
1057 | fprintf (cgraph_dump_file, " %s", cgraph_node_name (node)); |
1058 | fprintf (cgraph_dump_file, "\n"); | |
1c4a429a | 1059 | } |
151e6f24 | 1060 | cgraph_process_new_functions (); |
1c4a429a | 1061 | |
7660e67e SB |
1062 | /* Propagate reachability flag and lower representation of all reachable |
1063 | functions. In the future, lowering will introduce new functions and | |
1064 | new entry points on the way (by template instantiation and virtual | |
1065 | method table generation for instance). */ | |
1668aabc | 1066 | while (cgraph_nodes_queue) |
1c4a429a | 1067 | { |
e767b5be | 1068 | struct cgraph_edge *edge; |
1668aabc JH |
1069 | tree decl = cgraph_nodes_queue->decl; |
1070 | ||
1071 | node = cgraph_nodes_queue; | |
8bd87c4e | 1072 | cgraph_nodes_queue = cgraph_nodes_queue->next_needed; |
18c6ada9 | 1073 | node->next_needed = NULL; |
1c4a429a | 1074 | |
cd4dea62 | 1075 | /* ??? It is possible to create extern inline function and later using |
9d203871 | 1076 | weak alias attribute to kill its body. See |
cd4dea62 | 1077 | gcc.c-torture/compile/20011119-1.c */ |
c47d0034 | 1078 | if (!DECL_STRUCT_FUNCTION (decl) |
39e2db00 | 1079 | && (!node->alias || !node->thunk.alias) |
c47d0034 | 1080 | && !node->thunk.thunk_p) |
d71cc23f JH |
1081 | { |
1082 | cgraph_reset_node (node); | |
b125ad45 | 1083 | node->local.redefined_extern_inline = true; |
d71cc23f JH |
1084 | continue; |
1085 | } | |
cd4dea62 | 1086 | |
d7f09764 DN |
1087 | if (!node->analyzed) |
1088 | cgraph_analyze_function (node); | |
8dafba3c | 1089 | |
1c4a429a | 1090 | for (edge = node->callees; edge; edge = edge->next_callee) |
e767b5be | 1091 | if (!edge->callee->reachable) |
8dafba3c | 1092 | cgraph_mark_reachable_node (edge->callee); |
c47d0034 JH |
1093 | for (edge = node->callers; edge; edge = edge->next_caller) |
1094 | if (!edge->caller->reachable && edge->caller->thunk.thunk_p) | |
1095 | cgraph_mark_reachable_node (edge->caller); | |
8dafba3c | 1096 | |
b66887e4 JJ |
1097 | if (node->same_comdat_group) |
1098 | { | |
1099 | for (next = node->same_comdat_group; | |
1100 | next != node; | |
1101 | next = next->same_comdat_group) | |
1102 | cgraph_mark_reachable_node (next); | |
1103 | } | |
1104 | ||
6b20f353 DS |
1105 | /* If decl is a clone of an abstract function, mark that abstract |
1106 | function so that we don't release its body. The DECL_INITIAL() of that | |
581985d7 MJ |
1107 | abstract function declaration will be later needed to output debug |
1108 | info. */ | |
6b20f353 DS |
1109 | if (DECL_ABSTRACT_ORIGIN (decl)) |
1110 | { | |
581985d7 MJ |
1111 | struct cgraph_node *origin_node; |
1112 | origin_node = cgraph_get_node (DECL_ABSTRACT_ORIGIN (decl)); | |
6b20f353 DS |
1113 | origin_node->abstract_and_needed = true; |
1114 | } | |
1115 | ||
61e00a5e JH |
1116 | /* We finalize local static variables during constructing callgraph |
1117 | edges. Process their attributes too. */ | |
1118 | process_function_and_variable_attributes (first_processed, | |
1119 | first_analyzed_var); | |
1120 | first_processed = cgraph_nodes; | |
8a4a83ed JH |
1121 | first_analyzed_var = varpool_nodes; |
1122 | varpool_analyze_pending_decls (); | |
151e6f24 | 1123 | cgraph_process_new_functions (); |
1c4a429a | 1124 | } |
8dafba3c | 1125 | |
564738df | 1126 | /* Collect entry points to the unit. */ |
a194aa56 | 1127 | if (cgraph_dump_file) |
1668aabc | 1128 | { |
7d82fe7c | 1129 | fprintf (cgraph_dump_file, "Unit entry points:"); |
cd9c7bd2 | 1130 | for (node = cgraph_nodes; node != first_analyzed; node = node->next) |
39ecc018 | 1131 | if (node->needed) |
a194aa56 | 1132 | fprintf (cgraph_dump_file, " %s", cgraph_node_name (node)); |
7d82fe7c | 1133 | fprintf (cgraph_dump_file, "\n\nInitial "); |
e767b5be | 1134 | dump_cgraph (cgraph_dump_file); |
df7705b1 | 1135 | dump_varpool (cgraph_dump_file); |
1668aabc | 1136 | } |
7660e67e | 1137 | |
a194aa56 JH |
1138 | if (cgraph_dump_file) |
1139 | fprintf (cgraph_dump_file, "\nReclaiming functions:"); | |
1c4a429a | 1140 | |
96fc428c | 1141 | for (node = cgraph_nodes; node != first_analyzed; node = next) |
1c4a429a JH |
1142 | { |
1143 | tree decl = node->decl; | |
96fc428c | 1144 | next = node->next; |
1c4a429a | 1145 | |
c47d0034 | 1146 | if (node->local.finalized && !gimple_has_body_p (decl) |
39e2db00 | 1147 | && (!node->alias || !node->thunk.alias) |
c47d0034 | 1148 | && !node->thunk.thunk_p) |
c22cacf3 | 1149 | cgraph_reset_node (node); |
d71cc23f | 1150 | |
c47d0034 | 1151 | if (!node->reachable |
39e2db00 JH |
1152 | && (gimple_has_body_p (decl) || node->thunk.thunk_p |
1153 | || (node->alias && node->thunk.alias))) | |
1c4a429a | 1154 | { |
a194aa56 JH |
1155 | if (cgraph_dump_file) |
1156 | fprintf (cgraph_dump_file, " %s", cgraph_node_name (node)); | |
18c6ada9 | 1157 | cgraph_remove_node (node); |
d71cc23f | 1158 | continue; |
1c4a429a | 1159 | } |
9b0436b7 JH |
1160 | else |
1161 | node->next_needed = NULL; | |
c47d0034 | 1162 | gcc_assert (!node->local.finalized || node->thunk.thunk_p |
39e2db00 | 1163 | || node->alias |
c47d0034 | 1164 | || gimple_has_body_p (decl)); |
d71cc23f | 1165 | gcc_assert (node->analyzed == node->local.finalized); |
1c4a429a | 1166 | } |
a194aa56 | 1167 | if (cgraph_dump_file) |
7d82fe7c KC |
1168 | { |
1169 | fprintf (cgraph_dump_file, "\n\nReclaimed "); | |
1170 | dump_cgraph (cgraph_dump_file); | |
df7705b1 | 1171 | dump_varpool (cgraph_dump_file); |
7d82fe7c | 1172 | } |
1389294c | 1173 | bitmap_obstack_release (NULL); |
cd9c7bd2 | 1174 | first_analyzed = cgraph_nodes; |
1c4a429a | 1175 | ggc_collect (); |
151e6f24 JH |
1176 | } |
1177 | ||
5f1a9ebb | 1178 | |
151e6f24 JH |
1179 | /* Analyze the whole compilation unit once it is parsed completely. */ |
1180 | ||
1181 | void | |
1182 | cgraph_finalize_compilation_unit (void) | |
1183 | { | |
90097c67 RG |
1184 | timevar_push (TV_CGRAPH); |
1185 | ||
47c79d56 DN |
1186 | /* If LTO is enabled, initialize the streamer hooks needed by GIMPLE. */ |
1187 | if (flag_lto) | |
1188 | lto_streamer_hooks_init (); | |
1189 | ||
0038d4e0 MM |
1190 | /* If we're here there's no current function anymore. Some frontends |
1191 | are lazy in clearing these. */ | |
1192 | current_function_decl = NULL; | |
1193 | set_cfun (NULL); | |
1194 | ||
a406865a RG |
1195 | /* Do not skip analyzing the functions if there were errors, we |
1196 | miss diagnostics for following functions otherwise. */ | |
151e6f24 | 1197 | |
5f1a9ebb | 1198 | /* Emit size functions we didn't inline. */ |
f82a627c | 1199 | finalize_size_functions (); |
5f1a9ebb | 1200 | |
90097c67 RG |
1201 | /* Mark alias targets necessary and emit diagnostics. */ |
1202 | finish_aliases_1 (); | |
1203 | ||
151e6f24 JH |
1204 | if (!quiet_flag) |
1205 | { | |
1206 | fprintf (stderr, "\nAnalyzing compilation unit\n"); | |
1207 | fflush (stderr); | |
1208 | } | |
1209 | ||
deced1e2 XDL |
1210 | if (flag_dump_passes) |
1211 | dump_passes (); | |
1212 | ||
90097c67 RG |
1213 | /* Gimplify and lower all functions, compute reachability and |
1214 | remove unreachable nodes. */ | |
1215 | cgraph_analyze_functions (); | |
1216 | ||
5f1a9ebb RG |
1217 | /* Mark alias targets necessary and emit diagnostics. */ |
1218 | finish_aliases_1 (); | |
1219 | ||
90097c67 | 1220 | /* Gimplify and lower thunks. */ |
151e6f24 | 1221 | cgraph_analyze_functions (); |
a406865a | 1222 | |
90097c67 | 1223 | /* Finally drive the pass manager. */ |
a406865a | 1224 | cgraph_optimize (); |
90097c67 RG |
1225 | |
1226 | timevar_pop (TV_CGRAPH); | |
1c4a429a | 1227 | } |
3baf459d DN |
1228 | |
1229 | ||
1c4a429a JH |
1230 | /* Figure out what functions we want to assemble. */ |
1231 | ||
1232 | static void | |
db0e878d | 1233 | cgraph_mark_functions_to_output (void) |
1c4a429a JH |
1234 | { |
1235 | struct cgraph_node *node; | |
b66887e4 JJ |
1236 | #ifdef ENABLE_CHECKING |
1237 | bool check_same_comdat_groups = false; | |
1238 | ||
1239 | for (node = cgraph_nodes; node; node = node->next) | |
1240 | gcc_assert (!node->process); | |
1241 | #endif | |
1c4a429a | 1242 | |
1c4a429a JH |
1243 | for (node = cgraph_nodes; node; node = node->next) |
1244 | { | |
1245 | tree decl = node->decl; | |
b58b1157 | 1246 | struct cgraph_edge *e; |
c22cacf3 | 1247 | |
b66887e4 JJ |
1248 | gcc_assert (!node->process || node->same_comdat_group); |
1249 | if (node->process) | |
1250 | continue; | |
b58b1157 JH |
1251 | |
1252 | for (e = node->callers; e; e = e->next_caller) | |
dc0bfe6a | 1253 | if (e->inline_failed) |
b58b1157 | 1254 | break; |
1c4a429a | 1255 | |
7660e67e SB |
1256 | /* We need to output all local functions that are used and not |
1257 | always inlined, as well as those that are reachable from | |
1258 | outside the current compilation unit. */ | |
39ecc018 | 1259 | if (node->analyzed |
c47d0034 | 1260 | && !node->thunk.thunk_p |
39e2db00 | 1261 | && !node->alias |
18c6ada9 | 1262 | && !node->global.inlined_to |
508e4757 | 1263 | && (!cgraph_only_called_directly_p (node) |
39e2db00 JH |
1264 | || ((e || ipa_ref_has_aliases_p (&node->ref_list)) |
1265 | && node->reachable)) | |
6de9cd9a | 1266 | && !TREE_ASM_WRITTEN (decl) |
1c4a429a | 1267 | && !DECL_EXTERNAL (decl)) |
b66887e4 JJ |
1268 | { |
1269 | node->process = 1; | |
1270 | if (node->same_comdat_group) | |
1271 | { | |
1272 | struct cgraph_node *next; | |
1273 | for (next = node->same_comdat_group; | |
1274 | next != node; | |
1275 | next = next->same_comdat_group) | |
39e2db00 | 1276 | if (!next->thunk.thunk_p && !next->alias) |
c47d0034 | 1277 | next->process = 1; |
b66887e4 JJ |
1278 | } |
1279 | } | |
1280 | else if (node->same_comdat_group) | |
1281 | { | |
1282 | #ifdef ENABLE_CHECKING | |
1283 | check_same_comdat_groups = true; | |
1284 | #endif | |
1285 | } | |
341c100f | 1286 | else |
1a2caa7a NS |
1287 | { |
1288 | /* We should've reclaimed all functions that are not needed. */ | |
1289 | #ifdef ENABLE_CHECKING | |
726a989a | 1290 | if (!node->global.inlined_to |
39ecc018 | 1291 | && gimple_has_body_p (decl) |
a837268b JH |
1292 | /* FIXME: in ltrans unit when offline copy is outside partition but inline copies |
1293 | are inside partition, we can end up not removing the body since we no longer | |
1294 | have analyzed node pointing to it. */ | |
1295 | && !node->in_other_partition | |
39e2db00 | 1296 | && !node->alias |
1a2caa7a NS |
1297 | && !DECL_EXTERNAL (decl)) |
1298 | { | |
1299 | dump_cgraph_node (stderr, node); | |
1300 | internal_error ("failed to reclaim unneeded function"); | |
1301 | } | |
1302 | #endif | |
726a989a | 1303 | gcc_assert (node->global.inlined_to |
39ecc018 | 1304 | || !gimple_has_body_p (decl) |
a837268b | 1305 | || node->in_other_partition |
1a2caa7a NS |
1306 | || DECL_EXTERNAL (decl)); |
1307 | ||
1308 | } | |
c22cacf3 | 1309 | |
18d13f34 | 1310 | } |
b66887e4 JJ |
1311 | #ifdef ENABLE_CHECKING |
1312 | if (check_same_comdat_groups) | |
1313 | for (node = cgraph_nodes; node; node = node->next) | |
1314 | if (node->same_comdat_group && !node->process) | |
1315 | { | |
1316 | tree decl = node->decl; | |
1317 | if (!node->global.inlined_to | |
1318 | && gimple_has_body_p (decl) | |
a837268b JH |
1319 | /* FIXME: in ltrans unit when offline copy is outside partition but inline copies |
1320 | are inside partition, we can end up not removing the body since we no longer | |
1321 | have analyzed node pointing to it. */ | |
1322 | && !node->in_other_partition | |
b66887e4 JJ |
1323 | && !DECL_EXTERNAL (decl)) |
1324 | { | |
1325 | dump_cgraph_node (stderr, node); | |
39e2db00 | 1326 | internal_error ("failed to reclaim unneeded functionin same comdat group"); |
b66887e4 JJ |
1327 | } |
1328 | } | |
1329 | #endif | |
18d13f34 JH |
1330 | } |
1331 | ||
6744a6ab JH |
1332 | /* DECL is FUNCTION_DECL. Initialize datastructures so DECL is a function |
1333 | in lowered gimple form. | |
1334 | ||
1335 | Set current_function_decl and cfun to newly constructed empty function body. | |
1336 | return basic block in the function body. */ | |
1337 | ||
1338 | static basic_block | |
1339 | init_lowered_empty_function (tree decl) | |
1340 | { | |
1341 | basic_block bb; | |
1342 | ||
1343 | current_function_decl = decl; | |
1344 | allocate_struct_function (decl, false); | |
1345 | gimple_register_cfg_hooks (); | |
1346 | init_empty_tree_cfg (); | |
1347 | init_tree_ssa (cfun); | |
1348 | init_ssa_operands (); | |
1349 | cfun->gimple_df->in_ssa_p = true; | |
1350 | DECL_INITIAL (decl) = make_node (BLOCK); | |
1351 | ||
1352 | DECL_SAVED_TREE (decl) = error_mark_node; | |
1353 | cfun->curr_properties |= | |
1354 | (PROP_gimple_lcf | PROP_gimple_leh | PROP_cfg | PROP_referenced_vars | | |
1355 | PROP_ssa); | |
1356 | ||
1357 | /* Create BB for body of the function and connect it properly. */ | |
1358 | bb = create_basic_block (NULL, (void *) 0, ENTRY_BLOCK_PTR); | |
1359 | make_edge (ENTRY_BLOCK_PTR, bb, 0); | |
1360 | make_edge (bb, EXIT_BLOCK_PTR, 0); | |
1361 | ||
1362 | return bb; | |
1363 | } | |
1364 | ||
1365 | /* Adjust PTR by the constant FIXED_OFFSET, and by the vtable | |
1366 | offset indicated by VIRTUAL_OFFSET, if that is | |
1367 | non-null. THIS_ADJUSTING is nonzero for a this adjusting thunk and | |
1368 | zero for a result adjusting thunk. */ | |
1369 | ||
1370 | static tree | |
1371 | thunk_adjust (gimple_stmt_iterator * bsi, | |
1372 | tree ptr, bool this_adjusting, | |
1373 | HOST_WIDE_INT fixed_offset, tree virtual_offset) | |
1374 | { | |
1375 | gimple stmt; | |
1376 | tree ret; | |
1377 | ||
313333a6 RG |
1378 | if (this_adjusting |
1379 | && fixed_offset != 0) | |
6744a6ab JH |
1380 | { |
1381 | stmt = gimple_build_assign (ptr, | |
1382 | fold_build2_loc (input_location, | |
1383 | POINTER_PLUS_EXPR, | |
1384 | TREE_TYPE (ptr), ptr, | |
1385 | size_int (fixed_offset))); | |
1386 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); | |
1387 | } | |
1388 | ||
1389 | /* If there's a virtual offset, look up that value in the vtable and | |
1390 | adjust the pointer again. */ | |
1391 | if (virtual_offset) | |
1392 | { | |
1393 | tree vtabletmp; | |
1394 | tree vtabletmp2; | |
1395 | tree vtabletmp3; | |
1396 | tree offsettmp; | |
1397 | ||
1398 | if (!vtable_entry_type) | |
1399 | { | |
1400 | tree vfunc_type = make_node (FUNCTION_TYPE); | |
1401 | TREE_TYPE (vfunc_type) = integer_type_node; | |
1402 | TYPE_ARG_TYPES (vfunc_type) = NULL_TREE; | |
1403 | layout_type (vfunc_type); | |
1404 | ||
1405 | vtable_entry_type = build_pointer_type (vfunc_type); | |
1406 | } | |
1407 | ||
1408 | vtabletmp = | |
1409 | create_tmp_var (build_pointer_type | |
1410 | (build_pointer_type (vtable_entry_type)), "vptr"); | |
1411 | ||
1412 | /* The vptr is always at offset zero in the object. */ | |
1413 | stmt = gimple_build_assign (vtabletmp, | |
1414 | build1 (NOP_EXPR, TREE_TYPE (vtabletmp), | |
1415 | ptr)); | |
1416 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); | |
1417 | mark_symbols_for_renaming (stmt); | |
1418 | find_referenced_vars_in (stmt); | |
1419 | ||
1420 | /* Form the vtable address. */ | |
1421 | vtabletmp2 = create_tmp_var (TREE_TYPE (TREE_TYPE (vtabletmp)), | |
1422 | "vtableaddr"); | |
1423 | stmt = gimple_build_assign (vtabletmp2, | |
70f34814 | 1424 | build_simple_mem_ref (vtabletmp)); |
6744a6ab JH |
1425 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
1426 | mark_symbols_for_renaming (stmt); | |
1427 | find_referenced_vars_in (stmt); | |
1428 | ||
1429 | /* Find the entry with the vcall offset. */ | |
1430 | stmt = gimple_build_assign (vtabletmp2, | |
1431 | fold_build2_loc (input_location, | |
1432 | POINTER_PLUS_EXPR, | |
1433 | TREE_TYPE (vtabletmp2), | |
1434 | vtabletmp2, | |
1435 | fold_convert (sizetype, | |
1436 | virtual_offset))); | |
1437 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); | |
1438 | ||
1439 | /* Get the offset itself. */ | |
1440 | vtabletmp3 = create_tmp_var (TREE_TYPE (TREE_TYPE (vtabletmp2)), | |
1441 | "vcalloffset"); | |
1442 | stmt = gimple_build_assign (vtabletmp3, | |
70f34814 | 1443 | build_simple_mem_ref (vtabletmp2)); |
6744a6ab JH |
1444 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); |
1445 | mark_symbols_for_renaming (stmt); | |
1446 | find_referenced_vars_in (stmt); | |
1447 | ||
1448 | /* Cast to sizetype. */ | |
1449 | offsettmp = create_tmp_var (sizetype, "offset"); | |
1450 | stmt = gimple_build_assign (offsettmp, fold_convert (sizetype, vtabletmp3)); | |
1451 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); | |
1452 | mark_symbols_for_renaming (stmt); | |
1453 | find_referenced_vars_in (stmt); | |
1454 | ||
1455 | /* Adjust the `this' pointer. */ | |
1456 | ptr = fold_build2_loc (input_location, | |
1457 | POINTER_PLUS_EXPR, TREE_TYPE (ptr), ptr, | |
1458 | offsettmp); | |
1459 | } | |
1460 | ||
313333a6 RG |
1461 | if (!this_adjusting |
1462 | && fixed_offset != 0) | |
6744a6ab JH |
1463 | /* Adjust the pointer by the constant. */ |
1464 | { | |
1465 | tree ptrtmp; | |
1466 | ||
1467 | if (TREE_CODE (ptr) == VAR_DECL) | |
1468 | ptrtmp = ptr; | |
1469 | else | |
1470 | { | |
1471 | ptrtmp = create_tmp_var (TREE_TYPE (ptr), "ptr"); | |
1472 | stmt = gimple_build_assign (ptrtmp, ptr); | |
1473 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); | |
1474 | mark_symbols_for_renaming (stmt); | |
1475 | find_referenced_vars_in (stmt); | |
1476 | } | |
1477 | ptr = fold_build2_loc (input_location, | |
1478 | POINTER_PLUS_EXPR, TREE_TYPE (ptrtmp), ptrtmp, | |
1479 | size_int (fixed_offset)); | |
1480 | } | |
1481 | ||
1482 | /* Emit the statement and gimplify the adjustment expression. */ | |
1483 | ret = create_tmp_var (TREE_TYPE (ptr), "adjusted_this"); | |
1484 | stmt = gimple_build_assign (ret, ptr); | |
1485 | mark_symbols_for_renaming (stmt); | |
1486 | find_referenced_vars_in (stmt); | |
1487 | gsi_insert_after (bsi, stmt, GSI_NEW_STMT); | |
1488 | ||
1489 | return ret; | |
1490 | } | |
1491 | ||
1492 | /* Produce assembler for thunk NODE. */ | |
1493 | ||
1494 | static void | |
1495 | assemble_thunk (struct cgraph_node *node) | |
1496 | { | |
1497 | bool this_adjusting = node->thunk.this_adjusting; | |
1498 | HOST_WIDE_INT fixed_offset = node->thunk.fixed_offset; | |
1499 | HOST_WIDE_INT virtual_value = node->thunk.virtual_value; | |
1500 | tree virtual_offset = NULL; | |
1501 | tree alias = node->thunk.alias; | |
1502 | tree thunk_fndecl = node->decl; | |
1503 | tree a = DECL_ARGUMENTS (thunk_fndecl); | |
1504 | ||
1505 | current_function_decl = thunk_fndecl; | |
1506 | ||
d06865bf DK |
1507 | /* Ensure thunks are emitted in their correct sections. */ |
1508 | resolve_unique_section (thunk_fndecl, 0, flag_function_sections); | |
1509 | ||
6744a6ab JH |
1510 | if (this_adjusting |
1511 | && targetm.asm_out.can_output_mi_thunk (thunk_fndecl, fixed_offset, | |
1512 | virtual_value, alias)) | |
1513 | { | |
1514 | const char *fnname; | |
1515 | tree fn_block; | |
1516 | ||
1517 | DECL_RESULT (thunk_fndecl) | |
1518 | = build_decl (DECL_SOURCE_LOCATION (thunk_fndecl), | |
1519 | RESULT_DECL, 0, integer_type_node); | |
15488554 | 1520 | fnname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk_fndecl)); |
6744a6ab JH |
1521 | |
1522 | /* The back end expects DECL_INITIAL to contain a BLOCK, so we | |
1523 | create one. */ | |
1524 | fn_block = make_node (BLOCK); | |
1525 | BLOCK_VARS (fn_block) = a; | |
1526 | DECL_INITIAL (thunk_fndecl) = fn_block; | |
1527 | init_function_start (thunk_fndecl); | |
1528 | cfun->is_thunk = 1; | |
1529 | assemble_start_function (thunk_fndecl, fnname); | |
1530 | ||
1531 | targetm.asm_out.output_mi_thunk (asm_out_file, thunk_fndecl, | |
1532 | fixed_offset, virtual_value, alias); | |
1533 | ||
1534 | assemble_end_function (thunk_fndecl, fnname); | |
1535 | init_insn_lengths (); | |
1536 | free_after_compilation (cfun); | |
1537 | set_cfun (NULL); | |
1538 | TREE_ASM_WRITTEN (thunk_fndecl) = 1; | |
c47d0034 JH |
1539 | node->thunk.thunk_p = false; |
1540 | node->analyzed = false; | |
6744a6ab JH |
1541 | } |
1542 | else | |
1543 | { | |
1544 | tree restype; | |
1545 | basic_block bb, then_bb, else_bb, return_bb; | |
1546 | gimple_stmt_iterator bsi; | |
1547 | int nargs = 0; | |
1548 | tree arg; | |
1549 | int i; | |
1550 | tree resdecl; | |
1551 | tree restmp = NULL; | |
1552 | VEC(tree, heap) *vargs; | |
1553 | ||
1554 | gimple call; | |
1555 | gimple ret; | |
1556 | ||
1557 | DECL_IGNORED_P (thunk_fndecl) = 1; | |
1558 | bitmap_obstack_initialize (NULL); | |
1559 | ||
1560 | if (node->thunk.virtual_offset_p) | |
1561 | virtual_offset = size_int (virtual_value); | |
1562 | ||
1563 | /* Build the return declaration for the function. */ | |
1564 | restype = TREE_TYPE (TREE_TYPE (thunk_fndecl)); | |
1565 | if (DECL_RESULT (thunk_fndecl) == NULL_TREE) | |
1566 | { | |
1567 | resdecl = build_decl (input_location, RESULT_DECL, 0, restype); | |
1568 | DECL_ARTIFICIAL (resdecl) = 1; | |
1569 | DECL_IGNORED_P (resdecl) = 1; | |
1570 | DECL_RESULT (thunk_fndecl) = resdecl; | |
1571 | } | |
1572 | else | |
1573 | resdecl = DECL_RESULT (thunk_fndecl); | |
1574 | ||
1575 | bb = then_bb = else_bb = return_bb = init_lowered_empty_function (thunk_fndecl); | |
1576 | ||
1577 | bsi = gsi_start_bb (bb); | |
1578 | ||
1579 | /* Build call to the function being thunked. */ | |
1580 | if (!VOID_TYPE_P (restype)) | |
1581 | { | |
1582 | if (!is_gimple_reg_type (restype)) | |
1583 | { | |
1584 | restmp = resdecl; | |
c021f10b | 1585 | add_local_decl (cfun, restmp); |
6744a6ab JH |
1586 | BLOCK_VARS (DECL_INITIAL (current_function_decl)) = restmp; |
1587 | } | |
1588 | else | |
1589 | restmp = create_tmp_var_raw (restype, "retval"); | |
1590 | } | |
1591 | ||
910ad8de | 1592 | for (arg = a; arg; arg = DECL_CHAIN (arg)) |
6744a6ab JH |
1593 | nargs++; |
1594 | vargs = VEC_alloc (tree, heap, nargs); | |
1595 | if (this_adjusting) | |
1596 | VEC_quick_push (tree, vargs, | |
1597 | thunk_adjust (&bsi, | |
1598 | a, 1, fixed_offset, | |
1599 | virtual_offset)); | |
1600 | else | |
1601 | VEC_quick_push (tree, vargs, a); | |
910ad8de | 1602 | for (i = 1, arg = DECL_CHAIN (a); i < nargs; i++, arg = DECL_CHAIN (arg)) |
6744a6ab JH |
1603 | VEC_quick_push (tree, vargs, arg); |
1604 | call = gimple_build_call_vec (build_fold_addr_expr_loc (0, alias), vargs); | |
1605 | VEC_free (tree, heap, vargs); | |
1606 | gimple_call_set_cannot_inline (call, true); | |
1607 | gimple_call_set_from_thunk (call, true); | |
1608 | if (restmp) | |
1609 | gimple_call_set_lhs (call, restmp); | |
1610 | gsi_insert_after (&bsi, call, GSI_NEW_STMT); | |
1611 | mark_symbols_for_renaming (call); | |
1612 | find_referenced_vars_in (call); | |
1613 | update_stmt (call); | |
1614 | ||
1615 | if (restmp && !this_adjusting) | |
1616 | { | |
1124098b | 1617 | tree true_label = NULL_TREE; |
6744a6ab JH |
1618 | |
1619 | if (TREE_CODE (TREE_TYPE (restmp)) == POINTER_TYPE) | |
1620 | { | |
1621 | gimple stmt; | |
1622 | /* If the return type is a pointer, we need to | |
1623 | protect against NULL. We know there will be an | |
1624 | adjustment, because that's why we're emitting a | |
1625 | thunk. */ | |
1626 | then_bb = create_basic_block (NULL, (void *) 0, bb); | |
1627 | return_bb = create_basic_block (NULL, (void *) 0, then_bb); | |
1628 | else_bb = create_basic_block (NULL, (void *) 0, else_bb); | |
1629 | remove_edge (single_succ_edge (bb)); | |
1630 | true_label = gimple_block_label (then_bb); | |
6744a6ab | 1631 | stmt = gimple_build_cond (NE_EXPR, restmp, |
e8160c9a | 1632 | build_zero_cst (TREE_TYPE (restmp)), |
6744a6ab JH |
1633 | NULL_TREE, NULL_TREE); |
1634 | gsi_insert_after (&bsi, stmt, GSI_NEW_STMT); | |
1635 | make_edge (bb, then_bb, EDGE_TRUE_VALUE); | |
1636 | make_edge (bb, else_bb, EDGE_FALSE_VALUE); | |
1637 | make_edge (return_bb, EXIT_BLOCK_PTR, 0); | |
1638 | make_edge (then_bb, return_bb, EDGE_FALLTHRU); | |
1639 | make_edge (else_bb, return_bb, EDGE_FALLTHRU); | |
1640 | bsi = gsi_last_bb (then_bb); | |
1641 | } | |
1642 | ||
1643 | restmp = thunk_adjust (&bsi, restmp, /*this_adjusting=*/0, | |
1644 | fixed_offset, virtual_offset); | |
1645 | if (true_label) | |
1646 | { | |
1647 | gimple stmt; | |
1648 | bsi = gsi_last_bb (else_bb); | |
e8160c9a NF |
1649 | stmt = gimple_build_assign (restmp, |
1650 | build_zero_cst (TREE_TYPE (restmp))); | |
6744a6ab JH |
1651 | gsi_insert_after (&bsi, stmt, GSI_NEW_STMT); |
1652 | bsi = gsi_last_bb (return_bb); | |
1653 | } | |
1654 | } | |
1655 | else | |
1656 | gimple_call_set_tail (call, true); | |
1657 | ||
1658 | /* Build return value. */ | |
1659 | ret = gimple_build_return (restmp); | |
1660 | gsi_insert_after (&bsi, ret, GSI_NEW_STMT); | |
1661 | ||
1662 | delete_unreachable_blocks (); | |
1663 | update_ssa (TODO_update_ssa); | |
1664 | ||
6744a6ab JH |
1665 | /* Since we want to emit the thunk, we explicitly mark its name as |
1666 | referenced. */ | |
c47d0034 JH |
1667 | node->thunk.thunk_p = false; |
1668 | cgraph_node_remove_callees (node); | |
6744a6ab JH |
1669 | cgraph_add_new_function (thunk_fndecl, true); |
1670 | bitmap_obstack_release (NULL); | |
1671 | } | |
1672 | current_function_decl = NULL; | |
1673 | } | |
1674 | ||
c47d0034 | 1675 | |
39e2db00 JH |
1676 | |
1677 | /* Assemble thunks and aliases asociated to NODE. */ | |
c47d0034 JH |
1678 | |
1679 | static void | |
39e2db00 | 1680 | assemble_thunks_and_aliases (struct cgraph_node *node) |
c47d0034 JH |
1681 | { |
1682 | struct cgraph_edge *e; | |
39e2db00 JH |
1683 | int i; |
1684 | struct ipa_ref *ref; | |
1685 | ||
c47d0034 JH |
1686 | for (e = node->callers; e;) |
1687 | if (e->caller->thunk.thunk_p) | |
1688 | { | |
1689 | struct cgraph_node *thunk = e->caller; | |
1690 | ||
1691 | e = e->next_caller; | |
39e2db00 | 1692 | assemble_thunks_and_aliases (thunk); |
c47d0034 JH |
1693 | assemble_thunk (thunk); |
1694 | } | |
1695 | else | |
1696 | e = e->next_caller; | |
39e2db00 JH |
1697 | for (i = 0; ipa_ref_list_refering_iterate (&node->ref_list, i, ref); i++) |
1698 | if (ref->use == IPA_REF_ALIAS) | |
1699 | { | |
1700 | struct cgraph_node *alias = ipa_ref_refering_node (ref); | |
1701 | assemble_alias (alias->decl, | |
1702 | DECL_ASSEMBLER_NAME (alias->thunk.alias)); | |
1703 | assemble_thunks_and_aliases (alias); | |
1704 | } | |
c47d0034 JH |
1705 | } |
1706 | ||
1c4a429a | 1707 | /* Expand function specified by NODE. */ |
7660e67e | 1708 | |
1c4a429a | 1709 | static void |
db0e878d | 1710 | cgraph_expand_function (struct cgraph_node *node) |
1c4a429a JH |
1711 | { |
1712 | tree decl = node->decl; | |
1713 | ||
18c6ada9 | 1714 | /* We ought to not compile any inline clones. */ |
341c100f | 1715 | gcc_assert (!node->global.inlined_to); |
18c6ada9 | 1716 | |
7e8b322a | 1717 | announce_function (decl); |
257eb6e3 | 1718 | node->process = 0; |
39e2db00 | 1719 | assemble_thunks_and_aliases (node); |
5806d9ac JH |
1720 | gcc_assert (node->lowered); |
1721 | ||
1722 | /* Generate RTL for the body of DECL. */ | |
1723 | tree_rest_of_compilation (decl); | |
1724 | ||
1725 | /* Make sure that BE didn't give up on compiling. */ | |
1726 | gcc_assert (TREE_ASM_WRITTEN (decl)); | |
1727 | current_function_decl = NULL; | |
85ad2ef5 | 1728 | gcc_assert (!cgraph_preserve_function_body_p (node)); |
39ecc018 JH |
1729 | cgraph_release_function_body (node); |
1730 | /* Eliminate all call edges. This is important so the GIMPLE_CALL no longer | |
1731 | points to the dead function body. */ | |
1732 | cgraph_node_remove_callees (node); | |
6b02a499 JH |
1733 | |
1734 | cgraph_function_flags_ready = true; | |
1c4a429a JH |
1735 | } |
1736 | ||
18c6ada9 | 1737 | /* Return true when CALLER_DECL should be inlined into CALLEE_DECL. */ |
b58b1157 JH |
1738 | |
1739 | bool | |
61a05df1 | 1740 | cgraph_inline_p (struct cgraph_edge *e, cgraph_inline_failed_t *reason) |
b58b1157 | 1741 | { |
18c6ada9 JH |
1742 | *reason = e->inline_failed; |
1743 | return !e->inline_failed; | |
b58b1157 | 1744 | } |
18c6ada9 | 1745 | |
6674a6ce | 1746 | |
6674a6ce | 1747 | |
db0e878d AJ |
1748 | /* Expand all functions that must be output. |
1749 | ||
b58b1157 JH |
1750 | Attempt to topologically sort the nodes so function is output when |
1751 | all called functions are already assembled to allow data to be | |
a98ebe2e | 1752 | propagated across the callgraph. Use a stack to get smaller distance |
d1a6adeb | 1753 | between a function and its callees (later we may choose to use a more |
b58b1157 JH |
1754 | sophisticated algorithm for function reordering; we will likely want |
1755 | to use subsections to make the output functions appear in top-down | |
1756 | order). */ | |
1757 | ||
1758 | static void | |
a20af5b8 | 1759 | cgraph_expand_all_functions (void) |
b58b1157 JH |
1760 | { |
1761 | struct cgraph_node *node; | |
5ed6ace5 | 1762 | struct cgraph_node **order = XCNEWVEC (struct cgraph_node *, cgraph_n_nodes); |
f30cfcb1 | 1763 | int order_pos, new_order_pos = 0; |
b58b1157 JH |
1764 | int i; |
1765 | ||
af8bca3c | 1766 | order_pos = ipa_reverse_postorder (order); |
341c100f | 1767 | gcc_assert (order_pos == cgraph_n_nodes); |
b58b1157 | 1768 | |
1ae58c30 | 1769 | /* Garbage collector may remove inline clones we eliminate during |
18c6ada9 JH |
1770 | optimization. So we must be sure to not reference them. */ |
1771 | for (i = 0; i < order_pos; i++) | |
257eb6e3 | 1772 | if (order[i]->process) |
18c6ada9 JH |
1773 | order[new_order_pos++] = order[i]; |
1774 | ||
1775 | for (i = new_order_pos - 1; i >= 0; i--) | |
b58b1157 JH |
1776 | { |
1777 | node = order[i]; | |
257eb6e3 | 1778 | if (node->process) |
b58b1157 | 1779 | { |
341c100f | 1780 | gcc_assert (node->reachable); |
257eb6e3 | 1781 | node->process = 0; |
b58b1157 JH |
1782 | cgraph_expand_function (node); |
1783 | } | |
1784 | } | |
f45e0ad1 | 1785 | cgraph_process_new_functions (); |
50674e96 | 1786 | |
b58b1157 | 1787 | free (order); |
50674e96 | 1788 | |
b58b1157 JH |
1789 | } |
1790 | ||
474eccc6 ILT |
1791 | /* This is used to sort the node types by the cgraph order number. */ |
1792 | ||
24b97832 ILT |
1793 | enum cgraph_order_sort_kind |
1794 | { | |
1795 | ORDER_UNDEFINED = 0, | |
1796 | ORDER_FUNCTION, | |
1797 | ORDER_VAR, | |
1798 | ORDER_ASM | |
1799 | }; | |
1800 | ||
474eccc6 ILT |
1801 | struct cgraph_order_sort |
1802 | { | |
24b97832 | 1803 | enum cgraph_order_sort_kind kind; |
474eccc6 ILT |
1804 | union |
1805 | { | |
1806 | struct cgraph_node *f; | |
8a4a83ed | 1807 | struct varpool_node *v; |
474eccc6 ILT |
1808 | struct cgraph_asm_node *a; |
1809 | } u; | |
1810 | }; | |
1811 | ||
1812 | /* Output all functions, variables, and asm statements in the order | |
1813 | according to their order fields, which is the order in which they | |
1814 | appeared in the file. This implements -fno-toplevel-reorder. In | |
1815 | this mode we may output functions and variables which don't really | |
1816 | need to be output. */ | |
1817 | ||
1818 | static void | |
1819 | cgraph_output_in_order (void) | |
1820 | { | |
1821 | int max; | |
474eccc6 ILT |
1822 | struct cgraph_order_sort *nodes; |
1823 | int i; | |
1824 | struct cgraph_node *pf; | |
8a4a83ed | 1825 | struct varpool_node *pv; |
474eccc6 ILT |
1826 | struct cgraph_asm_node *pa; |
1827 | ||
1828 | max = cgraph_order; | |
33283dad | 1829 | nodes = XCNEWVEC (struct cgraph_order_sort, max); |
474eccc6 | 1830 | |
8a4a83ed | 1831 | varpool_analyze_pending_decls (); |
474eccc6 ILT |
1832 | |
1833 | for (pf = cgraph_nodes; pf; pf = pf->next) | |
1834 | { | |
39e2db00 | 1835 | if (pf->process && !pf->thunk.thunk_p && !pf->alias) |
474eccc6 ILT |
1836 | { |
1837 | i = pf->order; | |
1838 | gcc_assert (nodes[i].kind == ORDER_UNDEFINED); | |
1839 | nodes[i].kind = ORDER_FUNCTION; | |
1840 | nodes[i].u.f = pf; | |
1841 | } | |
1842 | } | |
1843 | ||
8a4a83ed | 1844 | for (pv = varpool_nodes_queue; pv; pv = pv->next_needed) |
474eccc6 ILT |
1845 | { |
1846 | i = pv->order; | |
1847 | gcc_assert (nodes[i].kind == ORDER_UNDEFINED); | |
1848 | nodes[i].kind = ORDER_VAR; | |
1849 | nodes[i].u.v = pv; | |
1850 | } | |
1851 | ||
1852 | for (pa = cgraph_asm_nodes; pa; pa = pa->next) | |
1853 | { | |
1854 | i = pa->order; | |
1855 | gcc_assert (nodes[i].kind == ORDER_UNDEFINED); | |
1856 | nodes[i].kind = ORDER_ASM; | |
1857 | nodes[i].u.a = pa; | |
1858 | } | |
474eccc6 | 1859 | |
7386e3ee JH |
1860 | /* In toplevel reorder mode we output all statics; mark them as needed. */ |
1861 | for (i = 0; i < max; ++i) | |
1862 | { | |
1863 | if (nodes[i].kind == ORDER_VAR) | |
1864 | { | |
1865 | varpool_mark_needed_node (nodes[i].u.v); | |
1866 | } | |
1867 | } | |
1868 | varpool_empty_needed_queue (); | |
1869 | ||
7fece979 JJ |
1870 | for (i = 0; i < max; ++i) |
1871 | if (nodes[i].kind == ORDER_VAR) | |
1872 | varpool_finalize_named_section_flags (nodes[i].u.v); | |
1873 | ||
474eccc6 ILT |
1874 | for (i = 0; i < max; ++i) |
1875 | { | |
1876 | switch (nodes[i].kind) | |
1877 | { | |
1878 | case ORDER_FUNCTION: | |
257eb6e3 | 1879 | nodes[i].u.f->process = 0; |
474eccc6 ILT |
1880 | cgraph_expand_function (nodes[i].u.f); |
1881 | break; | |
1882 | ||
1883 | case ORDER_VAR: | |
8a4a83ed | 1884 | varpool_assemble_decl (nodes[i].u.v); |
474eccc6 ILT |
1885 | break; |
1886 | ||
1887 | case ORDER_ASM: | |
1888 | assemble_asm (nodes[i].u.a->asm_str); | |
1889 | break; | |
1890 | ||
1891 | case ORDER_UNDEFINED: | |
1892 | break; | |
1893 | ||
1894 | default: | |
1895 | gcc_unreachable (); | |
1896 | } | |
1897 | } | |
e7b9eb2c ILT |
1898 | |
1899 | cgraph_asm_nodes = NULL; | |
33283dad | 1900 | free (nodes); |
474eccc6 ILT |
1901 | } |
1902 | ||
18c6ada9 JH |
1903 | /* Return true when function body of DECL still needs to be kept around |
1904 | for later re-use. */ | |
1905 | bool | |
85ad2ef5 | 1906 | cgraph_preserve_function_body_p (struct cgraph_node *node) |
18c6ada9 | 1907 | { |
c37f4ba4 | 1908 | gcc_assert (cgraph_global_info_ready); |
39e2db00 | 1909 | gcc_assert (!node->alias && !node->thunk.thunk_p); |
85ad2ef5 | 1910 | |
18c6ada9 | 1911 | /* Look if there is any clone around. */ |
9187e02d JH |
1912 | if (node->clones) |
1913 | return true; | |
18c6ada9 JH |
1914 | return false; |
1915 | } | |
1916 | ||
ef330312 PB |
1917 | static void |
1918 | ipa_passes (void) | |
1919 | { | |
db2960f4 | 1920 | set_cfun (NULL); |
04b201a2 | 1921 | current_function_decl = NULL; |
726a989a | 1922 | gimple_register_cfg_hooks (); |
ef330312 | 1923 | bitmap_obstack_initialize (NULL); |
b20996ff | 1924 | |
090fa0ab GF |
1925 | invoke_plugin_callbacks (PLUGIN_ALL_IPA_PASSES_START, NULL); |
1926 | ||
b20996ff | 1927 | if (!in_lto_p) |
0430f80c RG |
1928 | { |
1929 | execute_ipa_pass_list (all_small_ipa_passes); | |
1930 | if (seen_error ()) | |
1931 | return; | |
1932 | } | |
3baf459d | 1933 | |
d7f09764 DN |
1934 | /* If pass_all_early_optimizations was not scheduled, the state of |
1935 | the cgraph will not be properly updated. Update it now. */ | |
1936 | if (cgraph_state < CGRAPH_STATE_IPA_SSA) | |
1937 | cgraph_state = CGRAPH_STATE_IPA_SSA; | |
3baf459d | 1938 | |
d7f09764 DN |
1939 | if (!in_lto_p) |
1940 | { | |
1941 | /* Generate coverage variables and constructors. */ | |
1942 | coverage_finish (); | |
1943 | ||
1944 | /* Process new functions added. */ | |
1945 | set_cfun (NULL); | |
1946 | current_function_decl = NULL; | |
1947 | cgraph_process_new_functions (); | |
d7f09764 | 1948 | |
090fa0ab GF |
1949 | execute_ipa_summary_passes |
1950 | ((struct ipa_opt_pass_d *) all_regular_ipa_passes); | |
fb3f88cc | 1951 | } |
c082f9f3 SB |
1952 | |
1953 | /* Some targets need to handle LTO assembler output specially. */ | |
1954 | if (flag_generate_lto) | |
1955 | targetm.asm_out.lto_start (); | |
1956 | ||
d7f09764 DN |
1957 | execute_ipa_summary_passes ((struct ipa_opt_pass_d *) all_lto_gen_passes); |
1958 | ||
1959 | if (!in_lto_p) | |
1960 | ipa_write_summaries (); | |
1961 | ||
c082f9f3 SB |
1962 | if (flag_generate_lto) |
1963 | targetm.asm_out.lto_end (); | |
1964 | ||
fb3f88cc JH |
1965 | if (!flag_ltrans) |
1966 | execute_ipa_pass_list (all_regular_ipa_passes); | |
090fa0ab | 1967 | invoke_plugin_callbacks (PLUGIN_ALL_IPA_PASSES_END, NULL); |
3baf459d | 1968 | |
ef330312 PB |
1969 | bitmap_obstack_release (NULL); |
1970 | } | |
1971 | ||
4537ec0c | 1972 | |
1c4a429a JH |
1973 | /* Perform simple optimizations based on callgraph. */ |
1974 | ||
d7f09764 | 1975 | void |
db0e878d | 1976 | cgraph_optimize (void) |
1c4a429a | 1977 | { |
1da2ed5f | 1978 | if (seen_error ()) |
413803d3 VR |
1979 | return; |
1980 | ||
18c6ada9 JH |
1981 | #ifdef ENABLE_CHECKING |
1982 | verify_cgraph (); | |
1983 | #endif | |
7be82279 | 1984 | |
cd9c7bd2 JH |
1985 | /* Frontend may output common variables after the unit has been finalized. |
1986 | It is safe to deal with them here as they are always zero initialized. */ | |
8a4a83ed | 1987 | varpool_analyze_pending_decls (); |
857e7259 | 1988 | |
a194aa56 | 1989 | timevar_push (TV_CGRAPHOPT); |
a5573239 JH |
1990 | if (pre_ipa_mem_report) |
1991 | { | |
1992 | fprintf (stderr, "Memory consumption before IPA\n"); | |
1993 | dump_memory_report (false); | |
1994 | } | |
b58b1157 | 1995 | if (!quiet_flag) |
a418679d | 1996 | fprintf (stderr, "Performing interprocedural optimizations\n"); |
f45e0ad1 | 1997 | cgraph_state = CGRAPH_STATE_IPA; |
f30cfcb1 | 1998 | |
7e2fe9d8 | 1999 | /* Don't run the IPA passes if there was any error or sorry messages. */ |
1da2ed5f | 2000 | if (!seen_error ()) |
7e2fe9d8 AP |
2001 | ipa_passes (); |
2002 | ||
4537ec0c | 2003 | /* Do nothing else if any IPA pass found errors. */ |
1da2ed5f | 2004 | if (seen_error ()) |
9ba0399e RH |
2005 | { |
2006 | timevar_pop (TV_CGRAPHOPT); | |
2007 | return; | |
2008 | } | |
4537ec0c | 2009 | |
6b02a499 JH |
2010 | /* This pass remove bodies of extern inline functions we never inlined. |
2011 | Do this later so other IPA passes see what is really going on. */ | |
2012 | cgraph_remove_unreachable_nodes (false, dump_file); | |
dafc5b82 | 2013 | cgraph_global_info_ready = true; |
a194aa56 JH |
2014 | if (cgraph_dump_file) |
2015 | { | |
7d82fe7c | 2016 | fprintf (cgraph_dump_file, "Optimized "); |
a194aa56 | 2017 | dump_cgraph (cgraph_dump_file); |
cd9c7bd2 | 2018 | dump_varpool (cgraph_dump_file); |
a194aa56 | 2019 | } |
a5573239 JH |
2020 | if (post_ipa_mem_report) |
2021 | { | |
7fa982e5 | 2022 | fprintf (stderr, "Memory consumption after IPA\n"); |
a5573239 JH |
2023 | dump_memory_report (false); |
2024 | } | |
a194aa56 | 2025 | timevar_pop (TV_CGRAPHOPT); |
1c4a429a | 2026 | |
b58b1157 | 2027 | /* Output everything. */ |
3df9609a | 2028 | (*debug_hooks->assembly_start) (); |
7d82fe7c KC |
2029 | if (!quiet_flag) |
2030 | fprintf (stderr, "Assembling functions:\n"); | |
18c6ada9 JH |
2031 | #ifdef ENABLE_CHECKING |
2032 | verify_cgraph (); | |
2033 | #endif | |
474eccc6 | 2034 | |
9187e02d | 2035 | cgraph_materialize_all_clones (); |
6674a6ce | 2036 | cgraph_mark_functions_to_output (); |
cd9c7bd2 | 2037 | |
f45e0ad1 | 2038 | cgraph_state = CGRAPH_STATE_EXPANSION; |
474eccc6 ILT |
2039 | if (!flag_toplevel_reorder) |
2040 | cgraph_output_in_order (); | |
2041 | else | |
2042 | { | |
2043 | cgraph_output_pending_asms (); | |
2044 | ||
2045 | cgraph_expand_all_functions (); | |
8a4a83ed | 2046 | varpool_remove_unreferenced_decls (); |
474eccc6 | 2047 | |
8a4a83ed | 2048 | varpool_assemble_pending_decls (); |
474eccc6 | 2049 | } |
f45e0ad1 JH |
2050 | cgraph_process_new_functions (); |
2051 | cgraph_state = CGRAPH_STATE_FINISHED; | |
cd9c7bd2 | 2052 | |
a194aa56 JH |
2053 | if (cgraph_dump_file) |
2054 | { | |
7d82fe7c | 2055 | fprintf (cgraph_dump_file, "\nFinal "); |
a194aa56 | 2056 | dump_cgraph (cgraph_dump_file); |
df7705b1 | 2057 | dump_varpool (cgraph_dump_file); |
a194aa56 | 2058 | } |
18c6ada9 JH |
2059 | #ifdef ENABLE_CHECKING |
2060 | verify_cgraph (); | |
6de9cd9a DN |
2061 | /* Double check that all inline clones are gone and that all |
2062 | function bodies have been released from memory. */ | |
1da2ed5f | 2063 | if (!seen_error ()) |
6de9cd9a DN |
2064 | { |
2065 | struct cgraph_node *node; | |
2066 | bool error_found = false; | |
2067 | ||
2068 | for (node = cgraph_nodes; node; node = node->next) | |
2069 | if (node->analyzed | |
2070 | && (node->global.inlined_to | |
39ecc018 | 2071 | || gimple_has_body_p (node->decl))) |
6de9cd9a DN |
2072 | { |
2073 | error_found = true; | |
2074 | dump_cgraph_node (stderr, node); | |
c22cacf3 | 2075 | } |
6de9cd9a | 2076 | if (error_found) |
f30cfcb1 | 2077 | internal_error ("nodes with unreleased memory found"); |
6de9cd9a | 2078 | } |
18c6ada9 | 2079 | #endif |
1c4a429a | 2080 | } |
4537ec0c | 2081 | |
9b3e897d PB |
2082 | void |
2083 | init_cgraph (void) | |
2084 | { | |
a05541a9 JH |
2085 | if (!cgraph_dump_file) |
2086 | cgraph_dump_file = dump_begin (TDI_cgraph, NULL); | |
9b3e897d | 2087 | } |
57fb5341 | 2088 | |
c22cacf3 | 2089 | /* The edges representing the callers of the NEW_VERSION node were |
57fb5341 RL |
2090 | fixed by cgraph_function_versioning (), now the call_expr in their |
2091 | respective tree code should be updated to call the NEW_VERSION. */ | |
2092 | ||
2093 | static void | |
2094 | update_call_expr (struct cgraph_node *new_version) | |
2095 | { | |
2096 | struct cgraph_edge *e; | |
2097 | ||
2098 | gcc_assert (new_version); | |
726a989a RB |
2099 | |
2100 | /* Update the call expr on the edges to call the new version. */ | |
57fb5341 | 2101 | for (e = new_version->callers; e; e = e->next_caller) |
c0ab1df3 AP |
2102 | { |
2103 | struct function *inner_function = DECL_STRUCT_FUNCTION (e->caller->decl); | |
2104 | gimple_call_set_fndecl (e->call_stmt, new_version->decl); | |
1d65f45c | 2105 | maybe_clean_eh_stmt_fn (inner_function, e->call_stmt); |
c0ab1df3 | 2106 | } |
57fb5341 RL |
2107 | } |
2108 | ||
2109 | ||
2110 | /* Create a new cgraph node which is the new version of | |
2111 | OLD_VERSION node. REDIRECT_CALLERS holds the callers | |
2112 | edges which should be redirected to point to | |
2113 | NEW_VERSION. ALL the callees edges of OLD_VERSION | |
2114 | are cloned to the new version node. Return the new | |
91382288 JH |
2115 | version node. |
2116 | ||
2117 | If non-NULL BLOCK_TO_COPY determine what basic blocks | |
2118 | was copied to prevent duplications of calls that are dead | |
2119 | in the clone. */ | |
57fb5341 RL |
2120 | |
2121 | static struct cgraph_node * | |
2122 | cgraph_copy_node_for_versioning (struct cgraph_node *old_version, | |
b2c0ad40 | 2123 | tree new_decl, |
91382288 JH |
2124 | VEC(cgraph_edge_p,heap) *redirect_callers, |
2125 | bitmap bbs_to_copy) | |
2126 | { | |
57fb5341 | 2127 | struct cgraph_node *new_version; |
ae2b0888 | 2128 | struct cgraph_edge *e; |
57fb5341 RL |
2129 | unsigned i; |
2130 | ||
2131 | gcc_assert (old_version); | |
c22cacf3 | 2132 | |
a358e188 | 2133 | new_version = cgraph_create_node (new_decl); |
57fb5341 RL |
2134 | |
2135 | new_version->analyzed = true; | |
2136 | new_version->local = old_version->local; | |
036546e5 JH |
2137 | new_version->local.externally_visible = false; |
2138 | new_version->local.local = true; | |
57fb5341 | 2139 | new_version->global = old_version->global; |
8cf9feca | 2140 | new_version->rtl = old_version->rtl; |
57fb5341 RL |
2141 | new_version->reachable = true; |
2142 | new_version->count = old_version->count; | |
2143 | ||
036546e5 | 2144 | for (e = old_version->callees; e; e=e->next_callee) |
91382288 JH |
2145 | if (!bbs_to_copy |
2146 | || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) | |
2147 | cgraph_clone_edge (e, new_version, e->call_stmt, | |
2148 | e->lto_stmt_uid, REG_BR_PROB_BASE, | |
2149 | CGRAPH_FREQ_BASE, | |
898b8927 | 2150 | true); |
036546e5 | 2151 | for (e = old_version->indirect_calls; e; e=e->next_callee) |
91382288 JH |
2152 | if (!bbs_to_copy |
2153 | || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) | |
2154 | cgraph_clone_edge (e, new_version, e->call_stmt, | |
2155 | e->lto_stmt_uid, REG_BR_PROB_BASE, | |
2156 | CGRAPH_FREQ_BASE, | |
898b8927 | 2157 | true); |
ac47786e | 2158 | FOR_EACH_VEC_ELT (cgraph_edge_p, redirect_callers, i, e) |
b2c0ad40 KH |
2159 | { |
2160 | /* Redirect calls to the old version node to point to its new | |
2161 | version. */ | |
2162 | cgraph_redirect_edge_callee (e, new_version); | |
2163 | } | |
57fb5341 RL |
2164 | |
2165 | return new_version; | |
2166 | } | |
2167 | ||
2168 | /* Perform function versioning. | |
c22cacf3 | 2169 | Function versioning includes copying of the tree and |
57fb5341 RL |
2170 | a callgraph update (creating a new cgraph node and updating |
2171 | its callees and callers). | |
2172 | ||
2173 | REDIRECT_CALLERS varray includes the edges to be redirected | |
2174 | to the new version. | |
2175 | ||
2176 | TREE_MAP is a mapping of tree nodes we want to replace with | |
2177 | new ones (according to results of prior analysis). | |
2178 | OLD_VERSION_NODE is the node that is versioned. | |
b8698a0f | 2179 | It returns the new version's cgraph node. |
91382288 JH |
2180 | If non-NULL ARGS_TO_SKIP determine function parameters to remove |
2181 | from new version. | |
2182 | If non-NULL BLOCK_TO_COPY determine what basic blocks to copy. | |
2183 | If non_NULL NEW_ENTRY determine new entry BB of the clone. */ | |
57fb5341 RL |
2184 | |
2185 | struct cgraph_node * | |
2186 | cgraph_function_versioning (struct cgraph_node *old_version_node, | |
b2c0ad40 | 2187 | VEC(cgraph_edge_p,heap) *redirect_callers, |
9187e02d | 2188 | VEC (ipa_replace_map_p,gc)* tree_map, |
036546e5 | 2189 | bitmap args_to_skip, |
91382288 JH |
2190 | bitmap bbs_to_copy, |
2191 | basic_block new_entry_block, | |
036546e5 | 2192 | const char *clone_name) |
57fb5341 RL |
2193 | { |
2194 | tree old_decl = old_version_node->decl; | |
2195 | struct cgraph_node *new_version_node = NULL; | |
2196 | tree new_decl; | |
2197 | ||
2198 | if (!tree_versionable_function_p (old_decl)) | |
2199 | return NULL; | |
2200 | ||
61e03ffc JH |
2201 | gcc_assert (old_version_node->local.can_change_signature || !args_to_skip); |
2202 | ||
57fb5341 RL |
2203 | /* Make a new FUNCTION_DECL tree node for the |
2204 | new version. */ | |
c6f7cfc1 JH |
2205 | if (!args_to_skip) |
2206 | new_decl = copy_node (old_decl); | |
2207 | else | |
2208 | new_decl = build_function_decl_skip_args (old_decl, args_to_skip); | |
57fb5341 | 2209 | |
9990e02a JH |
2210 | /* Generate a new name for the new version. */ |
2211 | DECL_NAME (new_decl) = clone_function_name (old_decl, clone_name); | |
2212 | SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl)); | |
2213 | SET_DECL_RTL (new_decl, NULL); | |
2214 | ||
57fb5341 RL |
2215 | /* Create the new version's call-graph node. |
2216 | and update the edges of the new node. */ | |
2217 | new_version_node = | |
2218 | cgraph_copy_node_for_versioning (old_version_node, new_decl, | |
91382288 | 2219 | redirect_callers, bbs_to_copy); |
57fb5341 RL |
2220 | |
2221 | /* Copy the OLD_VERSION_NODE function tree to the new version. */ | |
91382288 JH |
2222 | tree_function_versioning (old_decl, new_decl, tree_map, false, args_to_skip, |
2223 | bbs_to_copy, new_entry_block); | |
57fb5341 | 2224 | |
c22cacf3 | 2225 | /* Update the new version's properties. |
c0ab1df3 AP |
2226 | Make The new version visible only within this translation unit. Make sure |
2227 | that is not weak also. | |
c22cacf3 | 2228 | ??? We cannot use COMDAT linkage because there is no |
57fb5341 | 2229 | ABI support for this. */ |
715a4e08 | 2230 | cgraph_make_decl_local (new_version_node->decl); |
e6e1c050 | 2231 | DECL_VIRTUAL_P (new_version_node->decl) = 0; |
57fb5341 RL |
2232 | new_version_node->local.externally_visible = 0; |
2233 | new_version_node->local.local = 1; | |
2234 | new_version_node->lowered = true; | |
e6e1c050 | 2235 | |
c0ab1df3 AP |
2236 | /* Update the call_expr on the edges to call the new version node. */ |
2237 | update_call_expr (new_version_node); | |
b8698a0f | 2238 | |
129a37fc | 2239 | cgraph_call_function_insertion_hooks (new_version_node); |
57fb5341 RL |
2240 | return new_version_node; |
2241 | } | |
ea99e0be | 2242 | |
9187e02d JH |
2243 | /* Given virtual clone, turn it into actual clone. */ |
2244 | static void | |
2245 | cgraph_materialize_clone (struct cgraph_node *node) | |
2246 | { | |
2247 | bitmap_obstack_initialize (NULL); | |
e466e2ce JH |
2248 | node->former_clone_of = node->clone_of->decl; |
2249 | if (node->clone_of->former_clone_of) | |
2250 | node->former_clone_of = node->clone_of->former_clone_of; | |
9187e02d JH |
2251 | /* Copy the OLD_VERSION_NODE function tree to the new version. */ |
2252 | tree_function_versioning (node->clone_of->decl, node->decl, | |
2253 | node->clone.tree_map, true, | |
91382288 | 2254 | node->clone.args_to_skip, NULL, NULL); |
08ad1d6d JH |
2255 | if (cgraph_dump_file) |
2256 | { | |
2257 | dump_function_to_file (node->clone_of->decl, cgraph_dump_file, dump_flags); | |
2258 | dump_function_to_file (node->decl, cgraph_dump_file, dump_flags); | |
2259 | } | |
9187e02d JH |
2260 | |
2261 | /* Function is no longer clone. */ | |
2262 | if (node->next_sibling_clone) | |
2263 | node->next_sibling_clone->prev_sibling_clone = node->prev_sibling_clone; | |
2264 | if (node->prev_sibling_clone) | |
2265 | node->prev_sibling_clone->next_sibling_clone = node->next_sibling_clone; | |
2266 | else | |
2267 | node->clone_of->clones = node->next_sibling_clone; | |
2268 | node->next_sibling_clone = NULL; | |
2269 | node->prev_sibling_clone = NULL; | |
0e3776db | 2270 | if (!node->clone_of->analyzed && !node->clone_of->clones) |
f0c418dc JH |
2271 | { |
2272 | cgraph_release_function_body (node->clone_of); | |
2273 | cgraph_node_remove_callees (node->clone_of); | |
2274 | ipa_remove_all_references (&node->clone_of->ref_list); | |
2275 | } | |
9187e02d JH |
2276 | node->clone_of = NULL; |
2277 | bitmap_obstack_release (NULL); | |
2278 | } | |
2279 | ||
8132a837 MJ |
2280 | /* If necessary, change the function declaration in the call statement |
2281 | associated with E so that it corresponds to the edge callee. */ | |
2282 | ||
2283 | gimple | |
2284 | cgraph_redirect_edge_call_stmt_to_callee (struct cgraph_edge *e) | |
2285 | { | |
2286 | tree decl = gimple_call_fndecl (e->call_stmt); | |
2287 | gimple new_stmt; | |
ceeffab0 MJ |
2288 | gimple_stmt_iterator gsi; |
2289 | bool gsi_computed = false; | |
437ffe7b JH |
2290 | #ifdef ENABLE_CHECKING |
2291 | struct cgraph_node *node; | |
2292 | #endif | |
8132a837 | 2293 | |
3949c4a7 MJ |
2294 | if (e->indirect_unknown_callee |
2295 | || decl == e->callee->decl | |
8132a837 | 2296 | /* Don't update call from same body alias to the real function. */ |
3949c4a7 | 2297 | || (decl && cgraph_get_node (decl) == cgraph_get_node (e->callee->decl))) |
8132a837 MJ |
2298 | return e->call_stmt; |
2299 | ||
437ffe7b | 2300 | #ifdef ENABLE_CHECKING |
3949c4a7 MJ |
2301 | if (decl) |
2302 | { | |
2303 | node = cgraph_get_node (decl); | |
2304 | gcc_assert (!node || !node->clone.combined_args_to_skip); | |
2305 | } | |
437ffe7b | 2306 | #endif |
e466e2ce | 2307 | |
8132a837 MJ |
2308 | if (cgraph_dump_file) |
2309 | { | |
2310 | fprintf (cgraph_dump_file, "updating call of %s/%i -> %s/%i: ", | |
2311 | cgraph_node_name (e->caller), e->caller->uid, | |
2312 | cgraph_node_name (e->callee), e->callee->uid); | |
2313 | print_gimple_stmt (cgraph_dump_file, e->call_stmt, 0, dump_flags); | |
e466e2ce | 2314 | if (e->callee->clone.combined_args_to_skip) |
8d2adc24 EB |
2315 | { |
2316 | fprintf (cgraph_dump_file, " combined args to skip: "); | |
2317 | dump_bitmap (cgraph_dump_file, | |
2318 | e->callee->clone.combined_args_to_skip); | |
e466e2ce | 2319 | } |
8132a837 MJ |
2320 | } |
2321 | ||
ce47fda3 MJ |
2322 | if (e->indirect_info && |
2323 | e->indirect_info->thunk_delta != 0 | |
ceeffab0 MJ |
2324 | && (!e->callee->clone.combined_args_to_skip |
2325 | || !bitmap_bit_p (e->callee->clone.combined_args_to_skip, 0))) | |
2326 | { | |
2327 | if (cgraph_dump_file) | |
ce47fda3 MJ |
2328 | fprintf (cgraph_dump_file, " Thunk delta is " |
2329 | HOST_WIDE_INT_PRINT_DEC "\n", e->indirect_info->thunk_delta); | |
ceeffab0 MJ |
2330 | gsi = gsi_for_stmt (e->call_stmt); |
2331 | gsi_computed = true; | |
ce47fda3 MJ |
2332 | gimple_adjust_this_by_delta (&gsi, |
2333 | build_int_cst (sizetype, | |
2334 | e->indirect_info->thunk_delta)); | |
2335 | e->indirect_info->thunk_delta = 0; | |
ceeffab0 MJ |
2336 | } |
2337 | ||
8132a837 | 2338 | if (e->callee->clone.combined_args_to_skip) |
8d2adc24 | 2339 | { |
1b7d2dd1 | 2340 | int lp_nr; |
8d2adc24 EB |
2341 | |
2342 | new_stmt | |
2343 | = gimple_call_copy_skip_args (e->call_stmt, | |
2344 | e->callee->clone.combined_args_to_skip); | |
3d113394 | 2345 | gimple_call_set_fndecl (new_stmt, e->callee->decl); |
8d2adc24 EB |
2346 | |
2347 | if (gimple_vdef (new_stmt) | |
2348 | && TREE_CODE (gimple_vdef (new_stmt)) == SSA_NAME) | |
2349 | SSA_NAME_DEF_STMT (gimple_vdef (new_stmt)) = new_stmt; | |
2350 | ||
ceeffab0 MJ |
2351 | if (!gsi_computed) |
2352 | gsi = gsi_for_stmt (e->call_stmt); | |
72351fa3 | 2353 | gsi_replace (&gsi, new_stmt, false); |
1b7d2dd1 RG |
2354 | /* We need to defer cleaning EH info on the new statement to |
2355 | fixup-cfg. We may not have dominator information at this point | |
2356 | and thus would end up with unreachable blocks and have no way | |
2357 | to communicate that we need to run CFG cleanup then. */ | |
2358 | lp_nr = lookup_stmt_eh_lp (e->call_stmt); | |
2359 | if (lp_nr != 0) | |
2360 | { | |
2361 | remove_stmt_from_eh_lp (e->call_stmt); | |
2362 | add_stmt_to_eh_lp (new_stmt, lp_nr); | |
2363 | } | |
8d2adc24 | 2364 | } |
8132a837 | 2365 | else |
3d113394 RG |
2366 | { |
2367 | new_stmt = e->call_stmt; | |
2368 | gimple_call_set_fndecl (new_stmt, e->callee->decl); | |
2369 | update_stmt (new_stmt); | |
2370 | } | |
8132a837 | 2371 | |
8132a837 MJ |
2372 | cgraph_set_call_stmt_including_clones (e->caller, e->call_stmt, new_stmt); |
2373 | ||
2374 | if (cgraph_dump_file) | |
2375 | { | |
2376 | fprintf (cgraph_dump_file, " updated to:"); | |
2377 | print_gimple_stmt (cgraph_dump_file, e->call_stmt, 0, dump_flags); | |
2378 | } | |
2379 | return new_stmt; | |
2380 | } | |
2381 | ||
9187e02d | 2382 | /* Once all functions from compilation unit are in memory, produce all clones |
8132a837 MJ |
2383 | and update all calls. We might also do this on demand if we don't want to |
2384 | bring all functions to memory prior compilation, but current WHOPR | |
2385 | implementation does that and it is is bit easier to keep everything right in | |
2386 | this order. */ | |
9187e02d JH |
2387 | void |
2388 | cgraph_materialize_all_clones (void) | |
2389 | { | |
2390 | struct cgraph_node *node; | |
2391 | bool stabilized = false; | |
2392 | ||
2393 | if (cgraph_dump_file) | |
2394 | fprintf (cgraph_dump_file, "Materializing clones\n"); | |
2395 | #ifdef ENABLE_CHECKING | |
2396 | verify_cgraph (); | |
2397 | #endif | |
2398 | ||
2399 | /* We can also do topological order, but number of iterations should be | |
2400 | bounded by number of IPA passes since single IPA pass is probably not | |
2401 | going to create clones of clones it created itself. */ | |
2402 | while (!stabilized) | |
2403 | { | |
2404 | stabilized = true; | |
2405 | for (node = cgraph_nodes; node; node = node->next) | |
2406 | { | |
2407 | if (node->clone_of && node->decl != node->clone_of->decl | |
2408 | && !gimple_has_body_p (node->decl)) | |
2409 | { | |
2410 | if (gimple_has_body_p (node->clone_of->decl)) | |
2411 | { | |
2412 | if (cgraph_dump_file) | |
08ad1d6d | 2413 | { |
61502ca8 | 2414 | fprintf (cgraph_dump_file, "cloning %s to %s\n", |
08ad1d6d JH |
2415 | cgraph_node_name (node->clone_of), |
2416 | cgraph_node_name (node)); | |
2417 | if (node->clone.tree_map) | |
2418 | { | |
2419 | unsigned int i; | |
2420 | fprintf (cgraph_dump_file, " replace map: "); | |
2421 | for (i = 0; i < VEC_length (ipa_replace_map_p, | |
2422 | node->clone.tree_map); | |
2423 | i++) | |
2424 | { | |
2425 | struct ipa_replace_map *replace_info; | |
2426 | replace_info = VEC_index (ipa_replace_map_p, | |
2427 | node->clone.tree_map, | |
2428 | i); | |
2429 | print_generic_expr (cgraph_dump_file, replace_info->old_tree, 0); | |
2430 | fprintf (cgraph_dump_file, " -> "); | |
2431 | print_generic_expr (cgraph_dump_file, replace_info->new_tree, 0); | |
2432 | fprintf (cgraph_dump_file, "%s%s;", | |
2433 | replace_info->replace_p ? "(replace)":"", | |
2434 | replace_info->ref_p ? "(ref)":""); | |
2435 | } | |
2436 | fprintf (cgraph_dump_file, "\n"); | |
2437 | } | |
2438 | if (node->clone.args_to_skip) | |
2439 | { | |
2440 | fprintf (cgraph_dump_file, " args_to_skip: "); | |
2441 | dump_bitmap (cgraph_dump_file, node->clone.args_to_skip); | |
2442 | } | |
2443 | if (node->clone.args_to_skip) | |
2444 | { | |
2445 | fprintf (cgraph_dump_file, " combined_args_to_skip:"); | |
2446 | dump_bitmap (cgraph_dump_file, node->clone.combined_args_to_skip); | |
2447 | } | |
2448 | } | |
9187e02d | 2449 | cgraph_materialize_clone (node); |
36576655 | 2450 | stabilized = false; |
9187e02d | 2451 | } |
9187e02d JH |
2452 | } |
2453 | } | |
2454 | } | |
47cb0d7d JH |
2455 | for (node = cgraph_nodes; node; node = node->next) |
2456 | if (!node->analyzed && node->callees) | |
2457 | cgraph_node_remove_callees (node); | |
8132a837 MJ |
2458 | if (cgraph_dump_file) |
2459 | fprintf (cgraph_dump_file, "Materialization Call site updates done.\n"); | |
9a23acef JH |
2460 | #ifdef ENABLE_CHECKING |
2461 | verify_cgraph (); | |
2462 | #endif | |
9187e02d JH |
2463 | cgraph_remove_unreachable_nodes (false, cgraph_dump_file); |
2464 | } | |
2465 | ||
7be82279 | 2466 | #include "gt-cgraphunit.h" |