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e72fcfe8 | 1 | /* Callgraph handling code. |
cbe34bb5 | 2 | Copyright (C) 2003-2017 Free Software Foundation, Inc. |
e72fcfe8 JH |
3 | Contributed by Jan Hubicka |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
e72fcfe8 JH |
10 | version. |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
e72fcfe8 | 20 | |
8a4a83ed | 21 | /* This file contains basic routines manipulating call graph |
c22cacf3 | 22 | |
357067f2 JH |
23 | The call-graph is a data structure designed for inter-procedural |
24 | optimization. It represents a multi-graph where nodes are functions | |
25 | (symbols within symbol table) and edges are call sites. */ | |
18c6ada9 | 26 | |
e72fcfe8 JH |
27 | #include "config.h" |
28 | #include "system.h" | |
29 | #include "coretypes.h" | |
c7131fb2 | 30 | #include "backend.h" |
957060b5 AM |
31 | #include "target.h" |
32 | #include "rtl.h" | |
e72fcfe8 | 33 | #include "tree.h" |
c7131fb2 | 34 | #include "gimple.h" |
957060b5 AM |
35 | #include "predict.h" |
36 | #include "alloc-pool.h" | |
957060b5 | 37 | #include "gimple-ssa.h" |
957060b5 AM |
38 | #include "cgraph.h" |
39 | #include "lto-streamer.h" | |
40e23961 | 40 | #include "fold-const.h" |
d8a2d370 DN |
41 | #include "varasm.h" |
42 | #include "calls.h" | |
43 | #include "print-tree.h" | |
e72fcfe8 | 44 | #include "langhooks.h" |
dc0bfe6a | 45 | #include "intl.h" |
2fb9a547 | 46 | #include "tree-eh.h" |
5be5c238 | 47 | #include "gimple-iterator.h" |
442b4905 | 48 | #include "tree-cfg.h" |
7a300452 | 49 | #include "tree-ssa.h" |
a63f2942 | 50 | #include "value-prof.h" |
a940b4d9 | 51 | #include "ipa-utils.h" |
dd912cb8 | 52 | #include "symbol-summary.h" |
8bc5448f | 53 | #include "tree-vrp.h" |
c582198b | 54 | #include "ipa-prop.h" |
27d020cf | 55 | #include "ipa-fnsummary.h" |
7d776ee2 | 56 | #include "cfgloop.h" |
9c8305f8 | 57 | #include "gimple-pretty-print.h" |
23a04216 | 58 | #include "tree-dfa.h" |
893479de AM |
59 | #include "profile.h" |
60 | #include "params.h" | |
d5e254e1 | 61 | #include "tree-chkp.h" |
2631d4eb | 62 | #include "context.h" |
a49de7a4 | 63 | #include "gimplify.h" |
314e6352 ML |
64 | #include "stringpool.h" |
65 | #include "attribs.h" | |
988d1653 | 66 | |
7ee2468b SB |
67 | /* FIXME: Only for PROP_loops, but cgraph shouldn't have to know about this. */ |
68 | #include "tree-pass.h" | |
69 | ||
1668aabc | 70 | /* Queue of cgraph nodes scheduled to be lowered. */ |
5e20cdc9 | 71 | symtab_node *x_cgraph_nodes_queue; |
3dafb85c | 72 | #define cgraph_nodes_queue ((cgraph_node *)x_cgraph_nodes_queue) |
f45e0ad1 | 73 | |
3dafb85c ML |
74 | /* Symbol table global context. */ |
75 | symbol_table *symtab; | |
cd9c7bd2 | 76 | |
61502ca8 | 77 | /* List of hooks triggered on cgraph_edge events. */ |
9088c1cc MJ |
78 | struct cgraph_edge_hook_list { |
79 | cgraph_edge_hook hook; | |
80 | void *data; | |
81 | struct cgraph_edge_hook_list *next; | |
82 | }; | |
83 | ||
61502ca8 | 84 | /* List of hooks triggered on cgraph_node events. */ |
9088c1cc MJ |
85 | struct cgraph_node_hook_list { |
86 | cgraph_node_hook hook; | |
87 | void *data; | |
88 | struct cgraph_node_hook_list *next; | |
89 | }; | |
90 | ||
61502ca8 | 91 | /* List of hooks triggered on events involving two cgraph_edges. */ |
9088c1cc MJ |
92 | struct cgraph_2edge_hook_list { |
93 | cgraph_2edge_hook hook; | |
94 | void *data; | |
95 | struct cgraph_2edge_hook_list *next; | |
96 | }; | |
97 | ||
61502ca8 | 98 | /* List of hooks triggered on events involving two cgraph_nodes. */ |
9088c1cc MJ |
99 | struct cgraph_2node_hook_list { |
100 | cgraph_2node_hook hook; | |
101 | void *data; | |
102 | struct cgraph_2node_hook_list *next; | |
103 | }; | |
104 | ||
2a22f99c TS |
105 | /* Hash descriptor for cgraph_function_version_info. */ |
106 | ||
ca752f39 | 107 | struct function_version_hasher : ggc_ptr_hash<cgraph_function_version_info> |
2a22f99c TS |
108 | { |
109 | static hashval_t hash (cgraph_function_version_info *); | |
110 | static bool equal (cgraph_function_version_info *, | |
111 | cgraph_function_version_info *); | |
112 | }; | |
113 | ||
3649b9b7 ST |
114 | /* Map a cgraph_node to cgraph_function_version_info using this htab. |
115 | The cgraph_function_version_info has a THIS_NODE field that is the | |
116 | corresponding cgraph_node.. */ | |
117 | ||
2a22f99c | 118 | static GTY(()) hash_table<function_version_hasher> *cgraph_fnver_htab = NULL; |
3649b9b7 ST |
119 | |
120 | /* Hash function for cgraph_fnver_htab. */ | |
2a22f99c TS |
121 | hashval_t |
122 | function_version_hasher::hash (cgraph_function_version_info *ptr) | |
3649b9b7 | 123 | { |
2a22f99c | 124 | int uid = ptr->this_node->uid; |
3649b9b7 ST |
125 | return (hashval_t)(uid); |
126 | } | |
127 | ||
128 | /* eq function for cgraph_fnver_htab. */ | |
2a22f99c TS |
129 | bool |
130 | function_version_hasher::equal (cgraph_function_version_info *n1, | |
131 | cgraph_function_version_info *n2) | |
3649b9b7 | 132 | { |
3649b9b7 ST |
133 | return n1->this_node->uid == n2->this_node->uid; |
134 | } | |
135 | ||
136 | /* Mark as GC root all allocated nodes. */ | |
137 | static GTY(()) struct cgraph_function_version_info * | |
138 | version_info_node = NULL; | |
139 | ||
f0889939 AM |
140 | /* Return true if NODE's address can be compared. */ |
141 | ||
142 | bool | |
143 | symtab_node::address_can_be_compared_p () | |
144 | { | |
145 | /* Address of virtual tables and functions is never compared. */ | |
146 | if (DECL_VIRTUAL_P (decl)) | |
147 | return false; | |
148 | /* Address of C++ cdtors is never compared. */ | |
149 | if (is_a <cgraph_node *> (this) | |
150 | && (DECL_CXX_CONSTRUCTOR_P (decl) | |
151 | || DECL_CXX_DESTRUCTOR_P (decl))) | |
152 | return false; | |
153 | /* Constant pool symbols addresses are never compared. | |
154 | flag_merge_constants permits us to assume the same on readonly vars. */ | |
155 | if (is_a <varpool_node *> (this) | |
156 | && (DECL_IN_CONSTANT_POOL (decl) | |
157 | || (flag_merge_constants >= 2 | |
158 | && TREE_READONLY (decl) && !TREE_THIS_VOLATILE (decl)))) | |
159 | return false; | |
160 | return true; | |
161 | } | |
162 | ||
3649b9b7 | 163 | /* Get the cgraph_function_version_info node corresponding to node. */ |
3dafb85c | 164 | cgraph_function_version_info * |
d52f5295 | 165 | cgraph_node::function_version (void) |
3649b9b7 | 166 | { |
3dafb85c | 167 | cgraph_function_version_info key; |
d52f5295 | 168 | key.this_node = this; |
3649b9b7 ST |
169 | |
170 | if (cgraph_fnver_htab == NULL) | |
171 | return NULL; | |
172 | ||
2a22f99c | 173 | return cgraph_fnver_htab->find (&key); |
3649b9b7 ST |
174 | } |
175 | ||
176 | /* Insert a new cgraph_function_version_info node into cgraph_fnver_htab | |
177 | corresponding to cgraph_node NODE. */ | |
3dafb85c | 178 | cgraph_function_version_info * |
d52f5295 | 179 | cgraph_node::insert_new_function_version (void) |
3649b9b7 | 180 | { |
3649b9b7 | 181 | version_info_node = NULL; |
766090c2 | 182 | version_info_node = ggc_cleared_alloc<cgraph_function_version_info> (); |
d52f5295 | 183 | version_info_node->this_node = this; |
3649b9b7 ST |
184 | |
185 | if (cgraph_fnver_htab == NULL) | |
2a22f99c | 186 | cgraph_fnver_htab = hash_table<function_version_hasher>::create_ggc (2); |
3649b9b7 | 187 | |
2a22f99c TS |
188 | *cgraph_fnver_htab->find_slot (version_info_node, INSERT) |
189 | = version_info_node; | |
3649b9b7 ST |
190 | return version_info_node; |
191 | } | |
192 | ||
193 | /* Remove the cgraph_function_version_info and cgraph_node for DECL. This | |
194 | DECL is a duplicate declaration. */ | |
195 | void | |
d52f5295 | 196 | cgraph_node::delete_function_version (tree decl) |
3649b9b7 | 197 | { |
3dafb85c ML |
198 | cgraph_node *decl_node = cgraph_node::get (decl); |
199 | cgraph_function_version_info *decl_v = NULL; | |
3649b9b7 ST |
200 | |
201 | if (decl_node == NULL) | |
202 | return; | |
203 | ||
d52f5295 | 204 | decl_v = decl_node->function_version (); |
3649b9b7 ST |
205 | |
206 | if (decl_v == NULL) | |
207 | return; | |
208 | ||
209 | if (decl_v->prev != NULL) | |
210 | decl_v->prev->next = decl_v->next; | |
211 | ||
212 | if (decl_v->next != NULL) | |
213 | decl_v->next->prev = decl_v->prev; | |
214 | ||
215 | if (cgraph_fnver_htab != NULL) | |
2a22f99c | 216 | cgraph_fnver_htab->remove_elt (decl_v); |
3649b9b7 | 217 | |
d52f5295 | 218 | decl_node->remove (); |
3649b9b7 ST |
219 | } |
220 | ||
221 | /* Record that DECL1 and DECL2 are semantically identical function | |
222 | versions. */ | |
223 | void | |
d52f5295 | 224 | cgraph_node::record_function_versions (tree decl1, tree decl2) |
3649b9b7 | 225 | { |
3dafb85c ML |
226 | cgraph_node *decl1_node = cgraph_node::get_create (decl1); |
227 | cgraph_node *decl2_node = cgraph_node::get_create (decl2); | |
228 | cgraph_function_version_info *decl1_v = NULL; | |
229 | cgraph_function_version_info *decl2_v = NULL; | |
230 | cgraph_function_version_info *before; | |
231 | cgraph_function_version_info *after; | |
3649b9b7 ST |
232 | |
233 | gcc_assert (decl1_node != NULL && decl2_node != NULL); | |
d52f5295 ML |
234 | decl1_v = decl1_node->function_version (); |
235 | decl2_v = decl2_node->function_version (); | |
3649b9b7 ST |
236 | |
237 | if (decl1_v != NULL && decl2_v != NULL) | |
238 | return; | |
239 | ||
240 | if (decl1_v == NULL) | |
d52f5295 | 241 | decl1_v = decl1_node->insert_new_function_version (); |
3649b9b7 ST |
242 | |
243 | if (decl2_v == NULL) | |
d52f5295 | 244 | decl2_v = decl2_node->insert_new_function_version (); |
3649b9b7 ST |
245 | |
246 | /* Chain decl2_v and decl1_v. All semantically identical versions | |
247 | will be chained together. */ | |
248 | ||
249 | before = decl1_v; | |
250 | after = decl2_v; | |
251 | ||
252 | while (before->next != NULL) | |
253 | before = before->next; | |
254 | ||
255 | while (after->prev != NULL) | |
256 | after= after->prev; | |
257 | ||
258 | before->next = after; | |
259 | after->prev = before; | |
260 | } | |
261 | ||
c582198b AM |
262 | /* Initialize callgraph dump file. */ |
263 | ||
264 | void | |
265 | symbol_table::initialize (void) | |
266 | { | |
267 | if (!dump_file) | |
268 | dump_file = dump_begin (TDI_cgraph, NULL); | |
0bdad123 ML |
269 | |
270 | if (!ipa_clones_dump_file) | |
271 | ipa_clones_dump_file = dump_begin (TDI_clones, NULL); | |
c582198b AM |
272 | } |
273 | ||
60393bbc AM |
274 | /* Allocate new callgraph node and insert it into basic data structures. */ |
275 | ||
276 | cgraph_node * | |
277 | symbol_table::create_empty (void) | |
278 | { | |
279 | cgraph_node *node = allocate_cgraph_symbol (); | |
280 | ||
281 | node->type = SYMTAB_FUNCTION; | |
282 | node->frequency = NODE_FREQUENCY_NORMAL; | |
283 | node->count_materialization_scale = REG_BR_PROB_BASE; | |
284 | cgraph_count++; | |
285 | ||
286 | return node; | |
287 | } | |
288 | ||
9088c1cc | 289 | /* Register HOOK to be called with DATA on each removed edge. */ |
3dafb85c ML |
290 | cgraph_edge_hook_list * |
291 | symbol_table::add_edge_removal_hook (cgraph_edge_hook hook, void *data) | |
9088c1cc | 292 | { |
3dafb85c ML |
293 | cgraph_edge_hook_list *entry; |
294 | cgraph_edge_hook_list **ptr = &m_first_edge_removal_hook; | |
9088c1cc | 295 | |
3dafb85c | 296 | entry = (cgraph_edge_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
297 | entry->hook = hook; |
298 | entry->data = data; | |
299 | entry->next = NULL; | |
300 | while (*ptr) | |
301 | ptr = &(*ptr)->next; | |
302 | *ptr = entry; | |
303 | return entry; | |
304 | } | |
305 | ||
306 | /* Remove ENTRY from the list of hooks called on removing edges. */ | |
307 | void | |
3dafb85c | 308 | symbol_table::remove_edge_removal_hook (cgraph_edge_hook_list *entry) |
9088c1cc | 309 | { |
3dafb85c | 310 | cgraph_edge_hook_list **ptr = &m_first_edge_removal_hook; |
9088c1cc MJ |
311 | |
312 | while (*ptr != entry) | |
313 | ptr = &(*ptr)->next; | |
314 | *ptr = entry->next; | |
934cb78a | 315 | free (entry); |
9088c1cc MJ |
316 | } |
317 | ||
318 | /* Call all edge removal hooks. */ | |
3dafb85c ML |
319 | void |
320 | symbol_table::call_edge_removal_hooks (cgraph_edge *e) | |
9088c1cc | 321 | { |
3dafb85c | 322 | cgraph_edge_hook_list *entry = m_first_edge_removal_hook; |
9088c1cc MJ |
323 | while (entry) |
324 | { | |
325 | entry->hook (e, entry->data); | |
326 | entry = entry->next; | |
327 | } | |
328 | } | |
329 | ||
330 | /* Register HOOK to be called with DATA on each removed node. */ | |
3dafb85c ML |
331 | cgraph_node_hook_list * |
332 | symbol_table::add_cgraph_removal_hook (cgraph_node_hook hook, void *data) | |
9088c1cc | 333 | { |
3dafb85c ML |
334 | cgraph_node_hook_list *entry; |
335 | cgraph_node_hook_list **ptr = &m_first_cgraph_removal_hook; | |
9088c1cc | 336 | |
3dafb85c | 337 | entry = (cgraph_node_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
338 | entry->hook = hook; |
339 | entry->data = data; | |
340 | entry->next = NULL; | |
341 | while (*ptr) | |
342 | ptr = &(*ptr)->next; | |
343 | *ptr = entry; | |
344 | return entry; | |
345 | } | |
346 | ||
347 | /* Remove ENTRY from the list of hooks called on removing nodes. */ | |
348 | void | |
3dafb85c | 349 | symbol_table::remove_cgraph_removal_hook (cgraph_node_hook_list *entry) |
9088c1cc | 350 | { |
3dafb85c | 351 | cgraph_node_hook_list **ptr = &m_first_cgraph_removal_hook; |
9088c1cc MJ |
352 | |
353 | while (*ptr != entry) | |
354 | ptr = &(*ptr)->next; | |
355 | *ptr = entry->next; | |
934cb78a | 356 | free (entry); |
9088c1cc MJ |
357 | } |
358 | ||
359 | /* Call all node removal hooks. */ | |
3dafb85c ML |
360 | void |
361 | symbol_table::call_cgraph_removal_hooks (cgraph_node *node) | |
9088c1cc | 362 | { |
3dafb85c | 363 | cgraph_node_hook_list *entry = m_first_cgraph_removal_hook; |
9088c1cc MJ |
364 | while (entry) |
365 | { | |
366 | entry->hook (node, entry->data); | |
367 | entry = entry->next; | |
368 | } | |
369 | } | |
370 | ||
3dafb85c ML |
371 | /* Call all node removal hooks. */ |
372 | void | |
373 | symbol_table::call_cgraph_insertion_hooks (cgraph_node *node) | |
374 | { | |
375 | cgraph_node_hook_list *entry = m_first_cgraph_insertion_hook; | |
376 | while (entry) | |
377 | { | |
378 | entry->hook (node, entry->data); | |
379 | entry = entry->next; | |
380 | } | |
381 | } | |
382 | ||
383 | ||
6544865a | 384 | /* Register HOOK to be called with DATA on each inserted node. */ |
3dafb85c ML |
385 | cgraph_node_hook_list * |
386 | symbol_table::add_cgraph_insertion_hook (cgraph_node_hook hook, void *data) | |
129a37fc | 387 | { |
3dafb85c ML |
388 | cgraph_node_hook_list *entry; |
389 | cgraph_node_hook_list **ptr = &m_first_cgraph_insertion_hook; | |
129a37fc | 390 | |
3dafb85c | 391 | entry = (cgraph_node_hook_list *) xmalloc (sizeof (*entry)); |
129a37fc JH |
392 | entry->hook = hook; |
393 | entry->data = data; | |
394 | entry->next = NULL; | |
395 | while (*ptr) | |
396 | ptr = &(*ptr)->next; | |
397 | *ptr = entry; | |
398 | return entry; | |
399 | } | |
400 | ||
6544865a | 401 | /* Remove ENTRY from the list of hooks called on inserted nodes. */ |
129a37fc | 402 | void |
3dafb85c | 403 | symbol_table::remove_cgraph_insertion_hook (cgraph_node_hook_list *entry) |
129a37fc | 404 | { |
3dafb85c | 405 | cgraph_node_hook_list **ptr = &m_first_cgraph_insertion_hook; |
129a37fc JH |
406 | |
407 | while (*ptr != entry) | |
408 | ptr = &(*ptr)->next; | |
409 | *ptr = entry->next; | |
934cb78a | 410 | free (entry); |
129a37fc JH |
411 | } |
412 | ||
9088c1cc | 413 | /* Register HOOK to be called with DATA on each duplicated edge. */ |
3dafb85c ML |
414 | cgraph_2edge_hook_list * |
415 | symbol_table::add_edge_duplication_hook (cgraph_2edge_hook hook, void *data) | |
9088c1cc | 416 | { |
3dafb85c ML |
417 | cgraph_2edge_hook_list *entry; |
418 | cgraph_2edge_hook_list **ptr = &m_first_edge_duplicated_hook; | |
9088c1cc | 419 | |
3dafb85c | 420 | entry = (cgraph_2edge_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
421 | entry->hook = hook; |
422 | entry->data = data; | |
423 | entry->next = NULL; | |
424 | while (*ptr) | |
425 | ptr = &(*ptr)->next; | |
426 | *ptr = entry; | |
427 | return entry; | |
428 | } | |
429 | ||
430 | /* Remove ENTRY from the list of hooks called on duplicating edges. */ | |
431 | void | |
3dafb85c | 432 | symbol_table::remove_edge_duplication_hook (cgraph_2edge_hook_list *entry) |
9088c1cc | 433 | { |
3dafb85c | 434 | cgraph_2edge_hook_list **ptr = &m_first_edge_duplicated_hook; |
9088c1cc MJ |
435 | |
436 | while (*ptr != entry) | |
437 | ptr = &(*ptr)->next; | |
438 | *ptr = entry->next; | |
934cb78a | 439 | free (entry); |
9088c1cc MJ |
440 | } |
441 | ||
442 | /* Call all edge duplication hooks. */ | |
66a20fc2 | 443 | void |
3dafb85c | 444 | symbol_table::call_edge_duplication_hooks (cgraph_edge *cs1, cgraph_edge *cs2) |
9088c1cc | 445 | { |
3dafb85c | 446 | cgraph_2edge_hook_list *entry = m_first_edge_duplicated_hook; |
9088c1cc MJ |
447 | while (entry) |
448 | { | |
449 | entry->hook (cs1, cs2, entry->data); | |
450 | entry = entry->next; | |
451 | } | |
452 | } | |
453 | ||
454 | /* Register HOOK to be called with DATA on each duplicated node. */ | |
3dafb85c ML |
455 | cgraph_2node_hook_list * |
456 | symbol_table::add_cgraph_duplication_hook (cgraph_2node_hook hook, void *data) | |
9088c1cc | 457 | { |
3dafb85c ML |
458 | cgraph_2node_hook_list *entry; |
459 | cgraph_2node_hook_list **ptr = &m_first_cgraph_duplicated_hook; | |
9088c1cc | 460 | |
3dafb85c | 461 | entry = (cgraph_2node_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
462 | entry->hook = hook; |
463 | entry->data = data; | |
464 | entry->next = NULL; | |
465 | while (*ptr) | |
466 | ptr = &(*ptr)->next; | |
467 | *ptr = entry; | |
468 | return entry; | |
469 | } | |
470 | ||
471 | /* Remove ENTRY from the list of hooks called on duplicating nodes. */ | |
472 | void | |
3dafb85c | 473 | symbol_table::remove_cgraph_duplication_hook (cgraph_2node_hook_list *entry) |
9088c1cc | 474 | { |
3dafb85c | 475 | cgraph_2node_hook_list **ptr = &m_first_cgraph_duplicated_hook; |
9088c1cc MJ |
476 | |
477 | while (*ptr != entry) | |
478 | ptr = &(*ptr)->next; | |
479 | *ptr = entry->next; | |
934cb78a | 480 | free (entry); |
9088c1cc MJ |
481 | } |
482 | ||
483 | /* Call all node duplication hooks. */ | |
b0d0a291 | 484 | void |
3dafb85c ML |
485 | symbol_table::call_cgraph_duplication_hooks (cgraph_node *node, |
486 | cgraph_node *node2) | |
9088c1cc | 487 | { |
3dafb85c | 488 | cgraph_2node_hook_list *entry = m_first_cgraph_duplicated_hook; |
9088c1cc MJ |
489 | while (entry) |
490 | { | |
3dafb85c | 491 | entry->hook (node, node2, entry->data); |
9088c1cc MJ |
492 | entry = entry->next; |
493 | } | |
494 | } | |
495 | ||
e72fcfe8 | 496 | /* Return cgraph node assigned to DECL. Create new one when needed. */ |
0550e7b7 | 497 | |
d52f5295 ML |
498 | cgraph_node * |
499 | cgraph_node::create (tree decl) | |
e72fcfe8 | 500 | { |
3dafb85c | 501 | cgraph_node *node = symtab->create_empty (); |
341c100f | 502 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
988d1653 | 503 | |
67348ccc | 504 | node->decl = decl; |
1f6be682 | 505 | |
3995f3a2 JH |
506 | node->count = profile_count::uninitialized (); |
507 | ||
41dbbb37 | 508 | if ((flag_openacc || flag_openmp) |
1f6be682 IV |
509 | && lookup_attribute ("omp declare target", DECL_ATTRIBUTES (decl))) |
510 | { | |
511 | node->offloadable = 1; | |
1d899da2 TS |
512 | if (ENABLE_OFFLOADING) |
513 | g->have_offload = true; | |
1f6be682 IV |
514 | } |
515 | ||
d52f5295 | 516 | node->register_symbol (); |
1ab24192 | 517 | |
5c2e00ee | 518 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL) |
e72fcfe8 | 519 | { |
d52f5295 | 520 | node->origin = cgraph_node::get_create (DECL_CONTEXT (decl)); |
e72fcfe8 JH |
521 | node->next_nested = node->origin->nested; |
522 | node->origin->nested = node; | |
523 | } | |
524 | return node; | |
525 | } | |
526 | ||
6f99e449 MJ |
527 | /* Try to find a call graph node for declaration DECL and if it does not exist |
528 | or if it corresponds to an inline clone, create a new one. */ | |
a358e188 | 529 | |
d52f5295 ML |
530 | cgraph_node * |
531 | cgraph_node::get_create (tree decl) | |
a358e188 | 532 | { |
3dafb85c | 533 | cgraph_node *first_clone = cgraph_node::get (decl); |
a358e188 | 534 | |
6f99e449 MJ |
535 | if (first_clone && !first_clone->global.inlined_to) |
536 | return first_clone; | |
a358e188 | 537 | |
3dafb85c | 538 | cgraph_node *node = cgraph_node::create (decl); |
6f99e449 MJ |
539 | if (first_clone) |
540 | { | |
541 | first_clone->clone_of = node; | |
542 | node->clones = first_clone; | |
3dafb85c | 543 | symtab->symtab_prevail_in_asm_name_hash (node); |
aede2c10 | 544 | node->decl->decl_with_vis.symtab_node = node; |
6f99e449 MJ |
545 | if (dump_file) |
546 | fprintf (dump_file, "Introduced new external node " | |
464d0118 ML |
547 | "(%s) and turned into root of the clone tree.\n", |
548 | node->dump_name ()); | |
6f99e449 MJ |
549 | } |
550 | else if (dump_file) | |
551 | fprintf (dump_file, "Introduced new external node " | |
464d0118 | 552 | "(%s).\n", node->dump_name ()); |
6f99e449 | 553 | return node; |
a358e188 MJ |
554 | } |
555 | ||
87e7b310 | 556 | /* Mark ALIAS as an alias to DECL. DECL_NODE is cgraph node representing |
073a8998 | 557 | the function body is associated with (not necessarily cgraph_node (DECL). */ |
b2583345 | 558 | |
d52f5295 ML |
559 | cgraph_node * |
560 | cgraph_node::create_alias (tree alias, tree target) | |
b2583345 | 561 | { |
d52f5295 | 562 | cgraph_node *alias_node; |
b2583345 | 563 | |
40a7fe1e JH |
564 | gcc_assert (TREE_CODE (target) == FUNCTION_DECL |
565 | || TREE_CODE (target) == IDENTIFIER_NODE); | |
b2583345 | 566 | gcc_assert (TREE_CODE (alias) == FUNCTION_DECL); |
d52f5295 | 567 | alias_node = cgraph_node::get_create (alias); |
67348ccc DM |
568 | gcc_assert (!alias_node->definition); |
569 | alias_node->alias_target = target; | |
570 | alias_node->definition = true; | |
571 | alias_node->alias = true; | |
08346abd | 572 | if (lookup_attribute ("weakref", DECL_ATTRIBUTES (alias)) != NULL) |
71e54687 | 573 | alias_node->transparent_alias = alias_node->weakref = true; |
6744a6ab JH |
574 | return alias_node; |
575 | } | |
576 | ||
051f8cc6 | 577 | /* Attempt to mark ALIAS as an alias to DECL. Return alias node if successful |
a358e188 | 578 | and NULL otherwise. |
6744a6ab | 579 | Same body aliases are output whenever the body of DECL is output, |
d52f5295 ML |
580 | and cgraph_node::get (ALIAS) transparently returns |
581 | cgraph_node::get (DECL). */ | |
6744a6ab | 582 | |
3dafb85c | 583 | cgraph_node * |
d52f5295 | 584 | cgraph_node::create_same_body_alias (tree alias, tree decl) |
6744a6ab | 585 | { |
3dafb85c | 586 | cgraph_node *n; |
a8b522b4 | 587 | |
6744a6ab | 588 | /* If aliases aren't supported by the assembler, fail. */ |
a8b522b4 ML |
589 | if (!TARGET_SUPPORTS_ALIASES) |
590 | return NULL; | |
591 | ||
39e2db00 JH |
592 | /* Langhooks can create same body aliases of symbols not defined. |
593 | Those are useless. Drop them on the floor. */ | |
3dafb85c | 594 | if (symtab->global_info_ready) |
39e2db00 | 595 | return NULL; |
6744a6ab | 596 | |
d52f5295 | 597 | n = cgraph_node::create_alias (alias, decl); |
67348ccc | 598 | n->cpp_implicit_alias = true; |
3dafb85c | 599 | if (symtab->cpp_implicit_aliases_done) |
d52f5295 | 600 | n->resolve_alias (cgraph_node::get (decl)); |
39e2db00 | 601 | return n; |
6744a6ab JH |
602 | } |
603 | ||
051f8cc6 | 604 | /* Add thunk alias into callgraph. The alias declaration is ALIAS and it |
61502ca8 | 605 | aliases DECL with an adjustments made into the first parameter. |
051f8cc6 JH |
606 | See comments in thunk_adjust for detail on the parameters. */ |
607 | ||
3dafb85c | 608 | cgraph_node * |
d52f5295 ML |
609 | cgraph_node::create_thunk (tree alias, tree, bool this_adjusting, |
610 | HOST_WIDE_INT fixed_offset, | |
611 | HOST_WIDE_INT virtual_value, | |
612 | tree virtual_offset, | |
613 | tree real_alias) | |
6744a6ab | 614 | { |
3dafb85c | 615 | cgraph_node *node; |
6744a6ab | 616 | |
d52f5295 | 617 | node = cgraph_node::get (alias); |
6744a6ab | 618 | if (node) |
d52f5295 | 619 | node->reset (); |
24d047a3 | 620 | else |
d52f5295 | 621 | node = cgraph_node::create (alias); |
77a74ed7 | 622 | gcc_checking_assert (!virtual_offset |
807e902e | 623 | || wi::eq_p (virtual_offset, virtual_value)); |
6744a6ab JH |
624 | node->thunk.fixed_offset = fixed_offset; |
625 | node->thunk.this_adjusting = this_adjusting; | |
626 | node->thunk.virtual_value = virtual_value; | |
627 | node->thunk.virtual_offset_p = virtual_offset != NULL; | |
628 | node->thunk.alias = real_alias; | |
629 | node->thunk.thunk_p = true; | |
67348ccc | 630 | node->definition = true; |
c47d0034 | 631 | |
051f8cc6 | 632 | return node; |
b2583345 JJ |
633 | } |
634 | ||
bedb9fc0 RH |
635 | /* Return the cgraph node that has ASMNAME for its DECL_ASSEMBLER_NAME. |
636 | Return NULL if there's no such node. */ | |
637 | ||
d52f5295 ML |
638 | cgraph_node * |
639 | cgraph_node::get_for_asmname (tree asmname) | |
bedb9fc0 | 640 | { |
1ab24192 | 641 | /* We do not want to look at inline clones. */ |
3dafb85c | 642 | for (symtab_node *node = symtab_node::get_for_asmname (asmname); |
5d59b5e1 | 643 | node; |
67348ccc | 644 | node = node->next_sharing_asm_name) |
5d59b5e1 | 645 | { |
7de90a6c | 646 | cgraph_node *cn = dyn_cast <cgraph_node *> (node); |
5d59b5e1 LC |
647 | if (cn && !cn->global.inlined_to) |
648 | return cn; | |
649 | } | |
bedb9fc0 RH |
650 | return NULL; |
651 | } | |
652 | ||
6bdf3519 | 653 | /* Returns a hash value for X (which really is a cgraph_edge). */ |
70d539ce | 654 | |
2a22f99c TS |
655 | hashval_t |
656 | cgraph_edge_hasher::hash (cgraph_edge *e) | |
70d539ce | 657 | { |
40ff1364 RB |
658 | /* This is a really poor hash function, but it is what htab_hash_pointer |
659 | uses. */ | |
660 | return (hashval_t) ((intptr_t)e->call_stmt >> 3); | |
661 | } | |
662 | ||
663 | /* Returns a hash value for X (which really is a cgraph_edge). */ | |
664 | ||
665 | hashval_t | |
355fe088 | 666 | cgraph_edge_hasher::hash (gimple *call_stmt) |
40ff1364 RB |
667 | { |
668 | /* This is a really poor hash function, but it is what htab_hash_pointer | |
669 | uses. */ | |
670 | return (hashval_t) ((intptr_t)call_stmt >> 3); | |
70d539ce JH |
671 | } |
672 | ||
026c3cfd | 673 | /* Return nonzero if the call_stmt of cgraph_edge X is stmt *Y. */ |
70d539ce | 674 | |
2a22f99c | 675 | inline bool |
355fe088 | 676 | cgraph_edge_hasher::equal (cgraph_edge *x, gimple *y) |
70d539ce | 677 | { |
2a22f99c | 678 | return x->call_stmt == y; |
70d539ce JH |
679 | } |
680 | ||
e33c6cd6 MJ |
681 | /* Add call graph edge E to call site hash of its caller. */ |
682 | ||
042ae7d2 | 683 | static inline void |
3dafb85c | 684 | cgraph_update_edge_in_call_site_hash (cgraph_edge *e) |
042ae7d2 | 685 | { |
355fe088 | 686 | gimple *call = e->call_stmt; |
40ff1364 RB |
687 | *e->caller->call_site_hash->find_slot_with_hash |
688 | (call, cgraph_edge_hasher::hash (call), INSERT) = e; | |
042ae7d2 JH |
689 | } |
690 | ||
691 | /* Add call graph edge E to call site hash of its caller. */ | |
692 | ||
e33c6cd6 | 693 | static inline void |
3dafb85c | 694 | cgraph_add_edge_to_call_site_hash (cgraph_edge *e) |
e33c6cd6 | 695 | { |
042ae7d2 JH |
696 | /* There are two speculative edges for every statement (one direct, |
697 | one indirect); always hash the direct one. */ | |
698 | if (e->speculative && e->indirect_unknown_callee) | |
699 | return; | |
2a22f99c | 700 | cgraph_edge **slot = e->caller->call_site_hash->find_slot_with_hash |
40ff1364 | 701 | (e->call_stmt, cgraph_edge_hasher::hash (e->call_stmt), INSERT); |
042ae7d2 JH |
702 | if (*slot) |
703 | { | |
3dafb85c | 704 | gcc_assert (((cgraph_edge *)*slot)->speculative); |
bfa3b50a JH |
705 | if (e->callee) |
706 | *slot = e; | |
042ae7d2 JH |
707 | return; |
708 | } | |
709 | gcc_assert (!*slot || e->speculative); | |
e33c6cd6 MJ |
710 | *slot = e; |
711 | } | |
726a989a RB |
712 | |
713 | /* Return the callgraph edge representing the GIMPLE_CALL statement | |
714 | CALL_STMT. */ | |
715 | ||
d52f5295 | 716 | cgraph_edge * |
355fe088 | 717 | cgraph_node::get_edge (gimple *call_stmt) |
18c6ada9 | 718 | { |
3dafb85c | 719 | cgraph_edge *e, *e2; |
70d539ce JH |
720 | int n = 0; |
721 | ||
d52f5295 | 722 | if (call_site_hash) |
40ff1364 RB |
723 | return call_site_hash->find_with_hash |
724 | (call_stmt, cgraph_edge_hasher::hash (call_stmt)); | |
18c6ada9 JH |
725 | |
726 | /* This loop may turn out to be performance problem. In such case adding | |
727 | hashtables into call nodes with very many edges is probably best | |
2b8a92de | 728 | solution. It is not good idea to add pointer into CALL_EXPR itself |
18c6ada9 JH |
729 | because we want to make possible having multiple cgraph nodes representing |
730 | different clones of the same body before the body is actually cloned. */ | |
d52f5295 | 731 | for (e = callees; e; e = e->next_callee) |
70d539ce JH |
732 | { |
733 | if (e->call_stmt == call_stmt) | |
734 | break; | |
735 | n++; | |
736 | } | |
726a989a | 737 | |
e33c6cd6 | 738 | if (!e) |
d52f5295 | 739 | for (e = indirect_calls; e; e = e->next_callee) |
e33c6cd6 MJ |
740 | { |
741 | if (e->call_stmt == call_stmt) | |
742 | break; | |
743 | n++; | |
744 | } | |
745 | ||
70d539ce JH |
746 | if (n > 100) |
747 | { | |
2a22f99c | 748 | call_site_hash = hash_table<cgraph_edge_hasher>::create_ggc (120); |
d52f5295 | 749 | for (e2 = callees; e2; e2 = e2->next_callee) |
e33c6cd6 | 750 | cgraph_add_edge_to_call_site_hash (e2); |
d52f5295 | 751 | for (e2 = indirect_calls; e2; e2 = e2->next_callee) |
e33c6cd6 | 752 | cgraph_add_edge_to_call_site_hash (e2); |
70d539ce | 753 | } |
726a989a | 754 | |
18c6ada9 JH |
755 | return e; |
756 | } | |
757 | ||
726a989a | 758 | |
3dafb85c | 759 | /* Change field call_stmt of edge to NEW_STMT. |
042ae7d2 JH |
760 | If UPDATE_SPECULATIVE and E is any component of speculative |
761 | edge, then update all components. */ | |
0550e7b7 | 762 | |
70d539ce | 763 | void |
538dd0b7 | 764 | cgraph_edge::set_call_stmt (gcall *new_stmt, bool update_speculative) |
70d539ce | 765 | { |
e33c6cd6 MJ |
766 | tree decl; |
767 | ||
042ae7d2 JH |
768 | /* Speculative edges has three component, update all of them |
769 | when asked to. */ | |
3dafb85c | 770 | if (update_speculative && speculative) |
042ae7d2 | 771 | { |
3dafb85c ML |
772 | cgraph_edge *direct, *indirect; |
773 | ipa_ref *ref; | |
042ae7d2 | 774 | |
3dafb85c ML |
775 | speculative_call_info (direct, indirect, ref); |
776 | direct->set_call_stmt (new_stmt, false); | |
777 | indirect->set_call_stmt (new_stmt, false); | |
042ae7d2 JH |
778 | ref->stmt = new_stmt; |
779 | return; | |
780 | } | |
781 | ||
782 | /* Only direct speculative edges go to call_site_hash. */ | |
3dafb85c ML |
783 | if (caller->call_site_hash |
784 | && (!speculative || !indirect_unknown_callee)) | |
70d539ce | 785 | { |
2a22f99c | 786 | caller->call_site_hash->remove_elt_with_hash |
40ff1364 | 787 | (call_stmt, cgraph_edge_hasher::hash (call_stmt)); |
70d539ce | 788 | } |
e33c6cd6 | 789 | |
3dafb85c ML |
790 | cgraph_edge *e = this; |
791 | ||
792 | call_stmt = new_stmt; | |
793 | if (indirect_unknown_callee | |
e33c6cd6 MJ |
794 | && (decl = gimple_call_fndecl (new_stmt))) |
795 | { | |
796 | /* Constant propagation (and possibly also inlining?) can turn an | |
797 | indirect call into a direct one. */ | |
3dafb85c | 798 | cgraph_node *new_callee = cgraph_node::get (decl); |
e33c6cd6 | 799 | |
a358e188 | 800 | gcc_checking_assert (new_callee); |
3dafb85c | 801 | e = make_direct (new_callee); |
e33c6cd6 MJ |
802 | } |
803 | ||
67348ccc | 804 | push_cfun (DECL_STRUCT_FUNCTION (e->caller->decl)); |
2505c5ed | 805 | e->can_throw_external = stmt_can_throw_external (new_stmt); |
b6fa5b01 | 806 | pop_cfun (); |
70d539ce | 807 | if (e->caller->call_site_hash) |
e33c6cd6 | 808 | cgraph_add_edge_to_call_site_hash (e); |
70d539ce JH |
809 | } |
810 | ||
e33c6cd6 MJ |
811 | /* Allocate a cgraph_edge structure and fill it with data according to the |
812 | parameters of which only CALLEE can be NULL (when creating an indirect call | |
813 | edge). */ | |
e72fcfe8 | 814 | |
d52f5295 | 815 | cgraph_edge * |
3dafb85c | 816 | symbol_table::create_edge (cgraph_node *caller, cgraph_node *callee, |
3995f3a2 | 817 | gcall *call_stmt, profile_count count, int freq, |
538dd0b7 | 818 | bool indir_unknown_callee) |
e72fcfe8 | 819 | { |
d52f5295 | 820 | cgraph_edge *edge; |
18c6ada9 | 821 | |
d7f09764 DN |
822 | /* LTO does not actually have access to the call_stmt since these |
823 | have not been loaded yet. */ | |
824 | if (call_stmt) | |
825 | { | |
61502ca8 | 826 | /* This is a rather expensive check possibly triggering |
77a74ed7 | 827 | construction of call stmt hashtable. */ |
3dafb85c | 828 | cgraph_edge *e; |
b2b29377 MM |
829 | gcc_checking_assert (!(e = caller->get_edge (call_stmt)) |
830 | || e->speculative); | |
18c6ada9 | 831 | |
d7f09764 DN |
832 | gcc_assert (is_gimple_call (call_stmt)); |
833 | } | |
b58b1157 | 834 | |
934cb78a MJ |
835 | if (free_edges) |
836 | { | |
837 | edge = free_edges; | |
838 | free_edges = NEXT_FREE_EDGE (edge); | |
839 | } | |
840 | else | |
841 | { | |
3dafb85c ML |
842 | edge = ggc_alloc<cgraph_edge> (); |
843 | edge->uid = edges_max_uid++; | |
934cb78a MJ |
844 | } |
845 | ||
3dafb85c ML |
846 | edges_count++; |
847 | ||
18c6ada9 | 848 | edge->aux = NULL; |
e72fcfe8 JH |
849 | edge->caller = caller; |
850 | edge->callee = callee; | |
e33c6cd6 MJ |
851 | edge->prev_caller = NULL; |
852 | edge->next_caller = NULL; | |
853 | edge->prev_callee = NULL; | |
854 | edge->next_callee = NULL; | |
042ae7d2 | 855 | edge->lto_stmt_uid = 0; |
e33c6cd6 MJ |
856 | |
857 | edge->count = count; | |
e33c6cd6 | 858 | edge->frequency = freq; |
3995f3a2 JH |
859 | gcc_checking_assert (freq >= 0); |
860 | gcc_checking_assert (freq <= CGRAPH_FREQ_MAX); | |
e33c6cd6 | 861 | |
e0704a46 | 862 | edge->call_stmt = call_stmt; |
67348ccc | 863 | push_cfun (DECL_STRUCT_FUNCTION (caller->decl)); |
9f3f7d13 RG |
864 | edge->can_throw_external |
865 | = call_stmt ? stmt_can_throw_external (call_stmt) : false; | |
b6fa5b01 | 866 | pop_cfun (); |
89faf322 | 867 | if (call_stmt |
67348ccc DM |
868 | && callee && callee->decl |
869 | && !gimple_check_call_matching_types (call_stmt, callee->decl, | |
4de09b85 | 870 | false)) |
1a0bf5e1 JH |
871 | { |
872 | edge->inline_failed = CIF_MISMATCHED_ARGUMENTS; | |
873 | edge->call_stmt_cannot_inline_p = true; | |
874 | } | |
89faf322 | 875 | else |
1a0bf5e1 JH |
876 | { |
877 | edge->inline_failed = CIF_FUNCTION_NOT_CONSIDERED; | |
878 | edge->call_stmt_cannot_inline_p = false; | |
879 | } | |
e33c6cd6 MJ |
880 | |
881 | edge->indirect_info = NULL; | |
882 | edge->indirect_inlining_edge = 0; | |
5979aa54 | 883 | edge->speculative = false; |
51ce0547 | 884 | edge->indirect_unknown_callee = indir_unknown_callee; |
a6b1490d JH |
885 | if (opt_for_fn (edge->caller->decl, flag_devirtualize) |
886 | && call_stmt && DECL_STRUCT_FUNCTION (caller->decl)) | |
f9bb202b JH |
887 | edge->in_polymorphic_cdtor |
888 | = decl_maybe_in_construction_p (NULL, NULL, call_stmt, | |
889 | caller->decl); | |
890 | else | |
891 | edge->in_polymorphic_cdtor = caller->thunk.thunk_p; | |
188c7d00 JH |
892 | if (call_stmt && caller->call_site_hash) |
893 | cgraph_add_edge_to_call_site_hash (edge); | |
e33c6cd6 MJ |
894 | |
895 | return edge; | |
896 | } | |
897 | ||
d52f5295 | 898 | /* Create edge from a given function to CALLEE in the cgraph. */ |
e33c6cd6 | 899 | |
3dafb85c ML |
900 | cgraph_edge * |
901 | cgraph_node::create_edge (cgraph_node *callee, | |
3995f3a2 | 902 | gcall *call_stmt, profile_count count, int freq) |
e33c6cd6 | 903 | { |
3dafb85c ML |
904 | cgraph_edge *edge = symtab->create_edge (this, callee, call_stmt, count, |
905 | freq, false); | |
e33c6cd6 | 906 | |
e33c6cd6 MJ |
907 | initialize_inline_failed (edge); |
908 | ||
e72fcfe8 | 909 | edge->next_caller = callee->callers; |
2563c224 RG |
910 | if (callee->callers) |
911 | callee->callers->prev_caller = edge; | |
d52f5295 ML |
912 | edge->next_callee = callees; |
913 | if (callees) | |
914 | callees->prev_callee = edge; | |
915 | callees = edge; | |
e72fcfe8 | 916 | callee->callers = edge; |
3dc9eaa6 | 917 | |
e33c6cd6 MJ |
918 | return edge; |
919 | } | |
920 | ||
ce47fda3 MJ |
921 | /* Allocate cgraph_indirect_call_info and set its fields to default values. */ |
922 | ||
3dafb85c | 923 | cgraph_indirect_call_info * |
ce47fda3 MJ |
924 | cgraph_allocate_init_indirect_info (void) |
925 | { | |
3dafb85c | 926 | cgraph_indirect_call_info *ii; |
ce47fda3 | 927 | |
766090c2 | 928 | ii = ggc_cleared_alloc<cgraph_indirect_call_info> (); |
ce47fda3 MJ |
929 | ii->param_index = -1; |
930 | return ii; | |
931 | } | |
e33c6cd6 MJ |
932 | |
933 | /* Create an indirect edge with a yet-undetermined callee where the call | |
934 | statement destination is a formal parameter of the caller with index | |
935 | PARAM_INDEX. */ | |
936 | ||
3dafb85c | 937 | cgraph_edge * |
538dd0b7 | 938 | cgraph_node::create_indirect_edge (gcall *call_stmt, int ecf_flags, |
3995f3a2 | 939 | profile_count count, int freq, |
d34af022 | 940 | bool compute_indirect_info) |
e33c6cd6 | 941 | { |
3dafb85c ML |
942 | cgraph_edge *edge = symtab->create_edge (this, NULL, call_stmt, |
943 | count, freq, true); | |
1d5755ef | 944 | tree target; |
e33c6cd6 | 945 | |
3dc9eaa6 AN |
946 | initialize_inline_failed (edge); |
947 | ||
ce47fda3 | 948 | edge->indirect_info = cgraph_allocate_init_indirect_info (); |
5f902d76 | 949 | edge->indirect_info->ecf_flags = ecf_flags; |
0127c169 | 950 | edge->indirect_info->vptr_changed = true; |
e33c6cd6 | 951 | |
1d5755ef | 952 | /* Record polymorphic call info. */ |
d34af022 IE |
953 | if (compute_indirect_info |
954 | && call_stmt | |
1d5755ef JH |
955 | && (target = gimple_call_fn (call_stmt)) |
956 | && virtual_method_call_p (target)) | |
957 | { | |
6f8091fc | 958 | ipa_polymorphic_call_context context (decl, target, call_stmt); |
1d5755ef JH |
959 | |
960 | /* Only record types can have virtual calls. */ | |
68377e53 | 961 | edge->indirect_info->polymorphic = true; |
1d5755ef | 962 | edge->indirect_info->param_index = -1; |
6f8091fc JH |
963 | edge->indirect_info->otr_token |
964 | = tree_to_uhwi (OBJ_TYPE_REF_TOKEN (target)); | |
965 | edge->indirect_info->otr_type = obj_type_ref_class (target); | |
966 | gcc_assert (TREE_CODE (edge->indirect_info->otr_type) == RECORD_TYPE); | |
ba392339 | 967 | edge->indirect_info->context = context; |
1d5755ef JH |
968 | } |
969 | ||
d52f5295 ML |
970 | edge->next_callee = indirect_calls; |
971 | if (indirect_calls) | |
972 | indirect_calls->prev_callee = edge; | |
973 | indirect_calls = edge; | |
e33c6cd6 | 974 | |
e72fcfe8 JH |
975 | return edge; |
976 | } | |
977 | ||
3dafb85c | 978 | /* Remove the edge from the list of the callees of the caller. */ |
2563c224 | 979 | |
3dafb85c ML |
980 | void |
981 | cgraph_edge::remove_caller (void) | |
2563c224 | 982 | { |
3dafb85c ML |
983 | if (prev_callee) |
984 | prev_callee->next_callee = next_callee; | |
985 | if (next_callee) | |
986 | next_callee->prev_callee = prev_callee; | |
987 | if (!prev_callee) | |
e33c6cd6 | 988 | { |
3dafb85c ML |
989 | if (indirect_unknown_callee) |
990 | caller->indirect_calls = next_callee; | |
e33c6cd6 | 991 | else |
3dafb85c | 992 | caller->callees = next_callee; |
e33c6cd6 | 993 | } |
3dafb85c | 994 | if (caller->call_site_hash) |
40ff1364 RB |
995 | caller->call_site_hash->remove_elt_with_hash |
996 | (call_stmt, cgraph_edge_hasher::hash (call_stmt)); | |
2563c224 RG |
997 | } |
998 | ||
934cb78a MJ |
999 | /* Put the edge onto the free list. */ |
1000 | ||
3dafb85c ML |
1001 | void |
1002 | symbol_table::free_edge (cgraph_edge *e) | |
934cb78a MJ |
1003 | { |
1004 | int uid = e->uid; | |
1005 | ||
042ae7d2 JH |
1006 | if (e->indirect_info) |
1007 | ggc_free (e->indirect_info); | |
1008 | ||
934cb78a | 1009 | /* Clear out the edge so we do not dangle pointers. */ |
5c0466b5 | 1010 | memset (e, 0, sizeof (*e)); |
934cb78a MJ |
1011 | e->uid = uid; |
1012 | NEXT_FREE_EDGE (e) = free_edges; | |
1013 | free_edges = e; | |
3dafb85c | 1014 | edges_count--; |
934cb78a MJ |
1015 | } |
1016 | ||
3dafb85c | 1017 | /* Remove the edge in the cgraph. */ |
e72fcfe8 | 1018 | |
cb967da5 | 1019 | void |
3dafb85c | 1020 | cgraph_edge::remove (void) |
e72fcfe8 | 1021 | { |
934cb78a | 1022 | /* Call all edge removal hooks. */ |
3dafb85c | 1023 | symtab->call_edge_removal_hooks (this); |
934cb78a | 1024 | |
3dafb85c | 1025 | if (!indirect_unknown_callee) |
e33c6cd6 | 1026 | /* Remove from callers list of the callee. */ |
3dafb85c | 1027 | remove_callee (); |
2563c224 RG |
1028 | |
1029 | /* Remove from callees list of the callers. */ | |
3dafb85c | 1030 | remove_caller (); |
934cb78a MJ |
1031 | |
1032 | /* Put the edge onto the free list. */ | |
3dafb85c | 1033 | symtab->free_edge (this); |
e72fcfe8 JH |
1034 | } |
1035 | ||
3dafb85c | 1036 | /* Turn edge into speculative call calling N2. Update |
042ae7d2 JH |
1037 | the profile so the direct call is taken COUNT times |
1038 | with FREQUENCY. | |
1039 | ||
1040 | At clone materialization time, the indirect call E will | |
1041 | be expanded as: | |
1042 | ||
1043 | if (call_dest == N2) | |
1044 | n2 (); | |
1045 | else | |
1046 | call call_dest | |
1047 | ||
1048 | At this time the function just creates the direct call, | |
1049 | the referencd representing the if conditional and attaches | |
09ce3660 | 1050 | them all to the orginal indirect call statement. |
042ae7d2 | 1051 | |
09ce3660 JH |
1052 | Return direct edge created. */ |
1053 | ||
3dafb85c | 1054 | cgraph_edge * |
3995f3a2 | 1055 | cgraph_edge::make_speculative (cgraph_node *n2, profile_count direct_count, |
3dafb85c | 1056 | int direct_frequency) |
042ae7d2 | 1057 | { |
3dafb85c ML |
1058 | cgraph_node *n = caller; |
1059 | ipa_ref *ref = NULL; | |
1060 | cgraph_edge *e2; | |
042ae7d2 JH |
1061 | |
1062 | if (dump_file) | |
464d0118 ML |
1063 | fprintf (dump_file, "Indirect call -> speculative call %s => %s\n", |
1064 | n->dump_name (), n2->dump_name ()); | |
3dafb85c ML |
1065 | speculative = true; |
1066 | e2 = n->create_edge (n2, call_stmt, direct_count, direct_frequency); | |
042ae7d2 JH |
1067 | initialize_inline_failed (e2); |
1068 | e2->speculative = true; | |
67348ccc | 1069 | if (TREE_NOTHROW (n2->decl)) |
bfa3b50a JH |
1070 | e2->can_throw_external = false; |
1071 | else | |
3dafb85c ML |
1072 | e2->can_throw_external = can_throw_external; |
1073 | e2->lto_stmt_uid = lto_stmt_uid; | |
f9bb202b | 1074 | e2->in_polymorphic_cdtor = in_polymorphic_cdtor; |
3dafb85c ML |
1075 | count -= e2->count; |
1076 | frequency -= e2->frequency; | |
1077 | symtab->call_edge_duplication_hooks (this, e2); | |
1078 | ref = n->create_reference (n2, IPA_REF_ADDR, call_stmt); | |
1079 | ref->lto_stmt_uid = lto_stmt_uid; | |
1080 | ref->speculative = speculative; | |
d52f5295 | 1081 | n2->mark_address_taken (); |
09ce3660 | 1082 | return e2; |
042ae7d2 JH |
1083 | } |
1084 | ||
1085 | /* Speculative call consist of three components: | |
1086 | 1) an indirect edge representing the original call | |
1087 | 2) an direct edge representing the new call | |
1088 | 3) ADDR_EXPR reference representing the speculative check. | |
1089 | All three components are attached to single statement (the indirect | |
1090 | call) and if one of them exists, all of them must exist. | |
1091 | ||
3dafb85c | 1092 | Given speculative call edge, return all three components. |
042ae7d2 JH |
1093 | */ |
1094 | ||
1095 | void | |
3dafb85c ML |
1096 | cgraph_edge::speculative_call_info (cgraph_edge *&direct, |
1097 | cgraph_edge *&indirect, | |
1098 | ipa_ref *&reference) | |
042ae7d2 | 1099 | { |
3dafb85c | 1100 | ipa_ref *ref; |
042ae7d2 | 1101 | int i; |
3dafb85c ML |
1102 | cgraph_edge *e2; |
1103 | cgraph_edge *e = this; | |
042ae7d2 JH |
1104 | |
1105 | if (!e->indirect_unknown_callee) | |
1106 | for (e2 = e->caller->indirect_calls; | |
1107 | e2->call_stmt != e->call_stmt || e2->lto_stmt_uid != e->lto_stmt_uid; | |
1108 | e2 = e2->next_callee) | |
1109 | ; | |
1110 | else | |
1111 | { | |
1112 | e2 = e; | |
1113 | /* We can take advantage of the call stmt hash. */ | |
1114 | if (e2->call_stmt) | |
1115 | { | |
d52f5295 | 1116 | e = e->caller->get_edge (e2->call_stmt); |
09ce3660 | 1117 | gcc_assert (e->speculative && !e->indirect_unknown_callee); |
042ae7d2 JH |
1118 | } |
1119 | else | |
1120 | for (e = e->caller->callees; | |
d0b66480 JH |
1121 | e2->call_stmt != e->call_stmt |
1122 | || e2->lto_stmt_uid != e->lto_stmt_uid; | |
042ae7d2 JH |
1123 | e = e->next_callee) |
1124 | ; | |
1125 | } | |
1126 | gcc_assert (e->speculative && e2->speculative); | |
d0b66480 JH |
1127 | direct = e; |
1128 | indirect = e2; | |
042ae7d2 JH |
1129 | |
1130 | reference = NULL; | |
d122681a | 1131 | for (i = 0; e->caller->iterate_reference (i, ref); i++) |
042ae7d2 JH |
1132 | if (ref->speculative |
1133 | && ((ref->stmt && ref->stmt == e->call_stmt) | |
57292ce9 | 1134 | || (!ref->stmt && ref->lto_stmt_uid == e->lto_stmt_uid))) |
042ae7d2 JH |
1135 | { |
1136 | reference = ref; | |
1137 | break; | |
1138 | } | |
d0b66480 JH |
1139 | |
1140 | /* Speculative edge always consist of all three components - direct edge, | |
1141 | indirect and reference. */ | |
1142 | ||
1143 | gcc_assert (e && e2 && ref); | |
042ae7d2 JH |
1144 | } |
1145 | ||
3dafb85c | 1146 | /* Speculative call edge turned out to be direct call to CALLE_DECL. |
042ae7d2 JH |
1147 | Remove the speculative call sequence and return edge representing the call. |
1148 | It is up to caller to redirect the call as appropriate. */ | |
1149 | ||
3dafb85c ML |
1150 | cgraph_edge * |
1151 | cgraph_edge::resolve_speculation (tree callee_decl) | |
042ae7d2 | 1152 | { |
3dafb85c ML |
1153 | cgraph_edge *edge = this; |
1154 | cgraph_edge *e2; | |
1155 | ipa_ref *ref; | |
042ae7d2 JH |
1156 | |
1157 | gcc_assert (edge->speculative); | |
3dafb85c | 1158 | edge->speculative_call_info (e2, edge, ref); |
123485ca | 1159 | if (!callee_decl |
d52f5295 ML |
1160 | || !ref->referred->semantically_equivalent_p |
1161 | (symtab_node::get (callee_decl))) | |
042ae7d2 JH |
1162 | { |
1163 | if (dump_file) | |
1164 | { | |
09ce3660 JH |
1165 | if (callee_decl) |
1166 | { | |
464d0118 | 1167 | fprintf (dump_file, "Speculative indirect call %s => %s has " |
09ce3660 | 1168 | "turned out to have contradicting known target ", |
464d0118 ML |
1169 | edge->caller->dump_name (), |
1170 | e2->callee->dump_name ()); | |
ef6cb4c7 | 1171 | print_generic_expr (dump_file, callee_decl); |
09ce3660 JH |
1172 | fprintf (dump_file, "\n"); |
1173 | } | |
1174 | else | |
1175 | { | |
464d0118 ML |
1176 | fprintf (dump_file, "Removing speculative call %s => %s\n", |
1177 | edge->caller->dump_name (), | |
1178 | e2->callee->dump_name ()); | |
09ce3660 | 1179 | } |
042ae7d2 JH |
1180 | } |
1181 | } | |
1182 | else | |
1183 | { | |
3dafb85c | 1184 | cgraph_edge *tmp = edge; |
042ae7d2 JH |
1185 | if (dump_file) |
1186 | fprintf (dump_file, "Speculative call turned into direct call.\n"); | |
1187 | edge = e2; | |
1188 | e2 = tmp; | |
d0b66480 JH |
1189 | /* FIXME: If EDGE is inlined, we should scale up the frequencies and counts |
1190 | in the functions inlined through it. */ | |
042ae7d2 JH |
1191 | } |
1192 | edge->count += e2->count; | |
1193 | edge->frequency += e2->frequency; | |
634ab819 JH |
1194 | if (edge->frequency > CGRAPH_FREQ_MAX) |
1195 | edge->frequency = CGRAPH_FREQ_MAX; | |
042ae7d2 JH |
1196 | edge->speculative = false; |
1197 | e2->speculative = false; | |
d122681a | 1198 | ref->remove_reference (); |
042ae7d2 | 1199 | if (e2->indirect_unknown_callee || e2->inline_failed) |
3dafb85c | 1200 | e2->remove (); |
042ae7d2 | 1201 | else |
d52f5295 | 1202 | e2->callee->remove_symbol_and_inline_clones (); |
042ae7d2 JH |
1203 | if (edge->caller->call_site_hash) |
1204 | cgraph_update_edge_in_call_site_hash (edge); | |
042ae7d2 JH |
1205 | return edge; |
1206 | } | |
1207 | ||
3dafb85c | 1208 | /* Make an indirect edge with an unknown callee an ordinary edge leading to |
ce47fda3 MJ |
1209 | CALLEE. DELTA is an integer constant that is to be added to the this |
1210 | pointer (first parameter) to compensate for skipping a thunk adjustment. */ | |
e33c6cd6 | 1211 | |
3dafb85c ML |
1212 | cgraph_edge * |
1213 | cgraph_edge::make_direct (cgraph_node *callee) | |
e33c6cd6 | 1214 | { |
3dafb85c ML |
1215 | cgraph_edge *edge = this; |
1216 | gcc_assert (indirect_unknown_callee); | |
042ae7d2 JH |
1217 | |
1218 | /* If we are redirecting speculative call, make it non-speculative. */ | |
3dafb85c | 1219 | if (indirect_unknown_callee && speculative) |
042ae7d2 | 1220 | { |
3dafb85c | 1221 | edge = edge->resolve_speculation (callee->decl); |
042ae7d2 JH |
1222 | |
1223 | /* On successful speculation just return the pre existing direct edge. */ | |
3dafb85c | 1224 | if (!indirect_unknown_callee) |
042ae7d2 JH |
1225 | return edge; |
1226 | } | |
1227 | ||
3dafb85c ML |
1228 | indirect_unknown_callee = 0; |
1229 | ggc_free (indirect_info); | |
1230 | indirect_info = NULL; | |
e33c6cd6 MJ |
1231 | |
1232 | /* Get the edge out of the indirect edge list. */ | |
3dafb85c ML |
1233 | if (prev_callee) |
1234 | prev_callee->next_callee = next_callee; | |
1235 | if (next_callee) | |
1236 | next_callee->prev_callee = prev_callee; | |
1237 | if (!prev_callee) | |
1238 | caller->indirect_calls = next_callee; | |
e33c6cd6 MJ |
1239 | |
1240 | /* Put it into the normal callee list */ | |
3dafb85c ML |
1241 | prev_callee = NULL; |
1242 | next_callee = caller->callees; | |
1243 | if (caller->callees) | |
1244 | caller->callees->prev_callee = edge; | |
1245 | caller->callees = edge; | |
e33c6cd6 MJ |
1246 | |
1247 | /* Insert to callers list of the new callee. */ | |
90988f77 | 1248 | edge->set_callee (callee); |
e33c6cd6 | 1249 | |
1a0bf5e1 JH |
1250 | if (call_stmt |
1251 | && !gimple_check_call_matching_types (call_stmt, callee->decl, false)) | |
1252 | { | |
1253 | call_stmt_cannot_inline_p = true; | |
1254 | inline_failed = CIF_MISMATCHED_ARGUMENTS; | |
1255 | } | |
f2906a8e | 1256 | |
e33c6cd6 MJ |
1257 | /* We need to re-determine the inlining status of the edge. */ |
1258 | initialize_inline_failed (edge); | |
042ae7d2 | 1259 | return edge; |
2563c224 RG |
1260 | } |
1261 | ||
66a20fc2 JH |
1262 | /* If necessary, change the function declaration in the call statement |
1263 | associated with E so that it corresponds to the edge callee. */ | |
1264 | ||
355fe088 | 1265 | gimple * |
3dafb85c | 1266 | cgraph_edge::redirect_call_stmt_to_callee (void) |
66a20fc2 | 1267 | { |
3dafb85c ML |
1268 | cgraph_edge *e = this; |
1269 | ||
66a20fc2 | 1270 | tree decl = gimple_call_fndecl (e->call_stmt); |
538dd0b7 | 1271 | gcall *new_stmt; |
66a20fc2 | 1272 | gimple_stmt_iterator gsi; |
8e9b2773 | 1273 | bool skip_bounds = false; |
66a20fc2 | 1274 | |
042ae7d2 JH |
1275 | if (e->speculative) |
1276 | { | |
3dafb85c | 1277 | cgraph_edge *e2; |
538dd0b7 | 1278 | gcall *new_stmt; |
3dafb85c | 1279 | ipa_ref *ref; |
042ae7d2 | 1280 | |
3dafb85c | 1281 | e->speculative_call_info (e, e2, ref); |
a21e735e JH |
1282 | /* If there already is an direct call (i.e. as a result of inliner's |
1283 | substitution), forget about speculating. */ | |
eefe9a99 | 1284 | if (decl) |
3dafb85c | 1285 | e = e->resolve_speculation (decl); |
a21e735e | 1286 | /* If types do not match, speculation was likely wrong. |
a49de7a4 | 1287 | The direct edge was possibly redirected to the clone with a different |
a21e735e JH |
1288 | signature. We did not update the call statement yet, so compare it |
1289 | with the reference that still points to the proper type. */ | |
1290 | else if (!gimple_check_call_matching_types (e->call_stmt, | |
67348ccc | 1291 | ref->referred->decl, |
eefe9a99 | 1292 | true)) |
042ae7d2 JH |
1293 | { |
1294 | if (dump_file) | |
464d0118 | 1295 | fprintf (dump_file, "Not expanding speculative call of %s -> %s\n" |
09ce3660 | 1296 | "Type mismatch.\n", |
464d0118 ML |
1297 | e->caller->dump_name (), |
1298 | e->callee->dump_name ()); | |
3dafb85c | 1299 | e = e->resolve_speculation (); |
a21e735e JH |
1300 | /* We are producing the final function body and will throw away the |
1301 | callgraph edges really soon. Reset the counts/frequencies to | |
1302 | keep verifier happy in the case of roundoff errors. */ | |
1303 | e->count = gimple_bb (e->call_stmt)->count; | |
1304 | e->frequency = compute_call_stmt_bb_frequency | |
67348ccc | 1305 | (e->caller->decl, gimple_bb (e->call_stmt)); |
09ce3660 | 1306 | } |
eefe9a99 | 1307 | /* Expand speculation into GIMPLE code. */ |
09ce3660 JH |
1308 | else |
1309 | { | |
1310 | if (dump_file) | |
3995f3a2 JH |
1311 | { |
1312 | fprintf (dump_file, | |
1313 | "Expanding speculative call of %s -> %s count: ", | |
1314 | e->caller->dump_name (), | |
1315 | e->callee->dump_name ()); | |
1316 | e->count.dump (dump_file); | |
1317 | fprintf (dump_file, "\n"); | |
1318 | } | |
042ae7d2 | 1319 | gcc_assert (e2->speculative); |
67348ccc | 1320 | push_cfun (DECL_STRUCT_FUNCTION (e->caller->decl)); |
109bb9be JH |
1321 | |
1322 | profile_probability prob = e->count.probability_in (e->count | |
1323 | + e2->count); | |
1324 | if (prob.initialized_p ()) | |
1325 | ; | |
1326 | else if (e->frequency || e2->frequency) | |
1327 | prob = profile_probability::probability_in_gcov_type | |
1328 | (e->frequency, e->frequency + e2->frequency).guessed (); | |
1329 | else | |
1330 | prob = profile_probability::even (); | |
0b986c6a JH |
1331 | new_stmt = gimple_ic (e->call_stmt, |
1332 | dyn_cast<cgraph_node *> (ref->referred), | |
109bb9be | 1333 | prob, e->count, e->count + e2->count); |
042ae7d2 | 1334 | e->speculative = false; |
d52f5295 ML |
1335 | e->caller->set_call_stmt_including_clones (e->call_stmt, new_stmt, |
1336 | false); | |
d5e254e1 IE |
1337 | |
1338 | /* Fix edges for BUILT_IN_CHKP_BNDRET calls attached to the | |
1339 | processed call stmt. */ | |
1340 | if (gimple_call_with_bounds_p (new_stmt) | |
1341 | && gimple_call_lhs (new_stmt) | |
1342 | && chkp_retbnd_call_by_val (gimple_call_lhs (e2->call_stmt))) | |
1343 | { | |
1344 | tree dresult = gimple_call_lhs (new_stmt); | |
1345 | tree iresult = gimple_call_lhs (e2->call_stmt); | |
538dd0b7 DM |
1346 | gcall *dbndret = chkp_retbnd_call_by_val (dresult); |
1347 | gcall *ibndret = chkp_retbnd_call_by_val (iresult); | |
d5e254e1 IE |
1348 | struct cgraph_edge *iedge |
1349 | = e2->caller->cgraph_node::get_edge (ibndret); | |
1350 | struct cgraph_edge *dedge; | |
1351 | ||
1352 | if (dbndret) | |
1353 | { | |
1354 | dedge = iedge->caller->create_edge (iedge->callee, | |
1355 | dbndret, e->count, | |
1356 | e->frequency); | |
1357 | dedge->frequency = compute_call_stmt_bb_frequency | |
1358 | (dedge->caller->decl, gimple_bb (dedge->call_stmt)); | |
1359 | } | |
1360 | iedge->frequency = compute_call_stmt_bb_frequency | |
1361 | (iedge->caller->decl, gimple_bb (iedge->call_stmt)); | |
1362 | } | |
1363 | ||
a21e735e | 1364 | e->frequency = compute_call_stmt_bb_frequency |
67348ccc | 1365 | (e->caller->decl, gimple_bb (e->call_stmt)); |
a21e735e | 1366 | e2->frequency = compute_call_stmt_bb_frequency |
67348ccc | 1367 | (e2->caller->decl, gimple_bb (e2->call_stmt)); |
042ae7d2 JH |
1368 | e2->speculative = false; |
1369 | ref->speculative = false; | |
1370 | ref->stmt = NULL; | |
1371 | /* Indirect edges are not both in the call site hash. | |
1372 | get it updated. */ | |
1373 | if (e->caller->call_site_hash) | |
1374 | cgraph_update_edge_in_call_site_hash (e2); | |
1375 | pop_cfun (); | |
1376 | /* Continue redirecting E to proper target. */ | |
1377 | } | |
1378 | } | |
1379 | ||
8e9b2773 IE |
1380 | /* We might propagate instrumented function pointer into |
1381 | not instrumented function and vice versa. In such a | |
1382 | case we need to either fix function declaration or | |
1383 | remove bounds from call statement. */ | |
1384 | if (flag_check_pointer_bounds && e->callee) | |
1385 | skip_bounds = chkp_redirect_edge (e); | |
1386 | ||
66a20fc2 | 1387 | if (e->indirect_unknown_callee |
8e9b2773 IE |
1388 | || (decl == e->callee->decl |
1389 | && !skip_bounds)) | |
66a20fc2 JH |
1390 | return e->call_stmt; |
1391 | ||
b2b29377 | 1392 | if (flag_checking && decl) |
66a20fc2 | 1393 | { |
b2b29377 | 1394 | cgraph_node *node = cgraph_node::get (decl); |
66a20fc2 JH |
1395 | gcc_assert (!node || !node->clone.combined_args_to_skip); |
1396 | } | |
66a20fc2 | 1397 | |
3dafb85c | 1398 | if (symtab->dump_file) |
66a20fc2 | 1399 | { |
464d0118 ML |
1400 | fprintf (symtab->dump_file, "updating call of %s -> %s: ", |
1401 | e->caller->dump_name (), e->callee->dump_name ()); | |
3dafb85c | 1402 | print_gimple_stmt (symtab->dump_file, e->call_stmt, 0, dump_flags); |
66a20fc2 JH |
1403 | if (e->callee->clone.combined_args_to_skip) |
1404 | { | |
3dafb85c ML |
1405 | fprintf (symtab->dump_file, " combined args to skip: "); |
1406 | dump_bitmap (symtab->dump_file, | |
66a20fc2 JH |
1407 | e->callee->clone.combined_args_to_skip); |
1408 | } | |
1409 | } | |
1410 | ||
8e9b2773 IE |
1411 | if (e->callee->clone.combined_args_to_skip |
1412 | || skip_bounds) | |
66a20fc2 JH |
1413 | { |
1414 | int lp_nr; | |
1415 | ||
8e9b2773 IE |
1416 | new_stmt = e->call_stmt; |
1417 | if (e->callee->clone.combined_args_to_skip) | |
1418 | new_stmt | |
1419 | = gimple_call_copy_skip_args (new_stmt, | |
1420 | e->callee->clone.combined_args_to_skip); | |
1421 | if (skip_bounds) | |
1422 | new_stmt = chkp_copy_call_skip_bounds (new_stmt); | |
1423 | ||
b0fd4d7e | 1424 | tree old_fntype = gimple_call_fntype (e->call_stmt); |
67348ccc | 1425 | gimple_call_set_fndecl (new_stmt, e->callee->decl); |
b0fd4d7e MJ |
1426 | cgraph_node *origin = e->callee; |
1427 | while (origin->clone_of) | |
1428 | origin = origin->clone_of; | |
1429 | ||
1430 | if ((origin->former_clone_of | |
1431 | && old_fntype == TREE_TYPE (origin->former_clone_of)) | |
1432 | || old_fntype == TREE_TYPE (origin->decl)) | |
1433 | gimple_call_set_fntype (new_stmt, TREE_TYPE (e->callee->decl)); | |
1434 | else | |
1435 | { | |
1436 | bitmap skip = e->callee->clone.combined_args_to_skip; | |
1437 | tree t = cgraph_build_function_type_skip_args (old_fntype, skip, | |
1438 | false); | |
1439 | gimple_call_set_fntype (new_stmt, t); | |
1440 | } | |
66a20fc2 JH |
1441 | |
1442 | if (gimple_vdef (new_stmt) | |
1443 | && TREE_CODE (gimple_vdef (new_stmt)) == SSA_NAME) | |
1444 | SSA_NAME_DEF_STMT (gimple_vdef (new_stmt)) = new_stmt; | |
1445 | ||
1446 | gsi = gsi_for_stmt (e->call_stmt); | |
a49de7a4 JJ |
1447 | |
1448 | /* For optimized away parameters, add on the caller side | |
1449 | before the call | |
1450 | DEBUG D#X => parm_Y(D) | |
1451 | stmts and associate D#X with parm in decl_debug_args_lookup | |
1452 | vector to say for debug info that if parameter parm had been passed, | |
1453 | it would have value parm_Y(D). */ | |
1454 | if (e->callee->clone.combined_args_to_skip && MAY_HAVE_DEBUG_STMTS) | |
1455 | { | |
1456 | vec<tree, va_gc> **debug_args | |
1457 | = decl_debug_args_lookup (e->callee->decl); | |
1458 | tree old_decl = gimple_call_fndecl (e->call_stmt); | |
1459 | if (debug_args && old_decl) | |
1460 | { | |
1461 | tree parm; | |
1462 | unsigned i = 0, num; | |
1463 | unsigned len = vec_safe_length (*debug_args); | |
1464 | unsigned nargs = gimple_call_num_args (e->call_stmt); | |
1465 | for (parm = DECL_ARGUMENTS (old_decl), num = 0; | |
1466 | parm && num < nargs; | |
1467 | parm = DECL_CHAIN (parm), num++) | |
1468 | if (bitmap_bit_p (e->callee->clone.combined_args_to_skip, num) | |
1469 | && is_gimple_reg (parm)) | |
1470 | { | |
1471 | unsigned last = i; | |
1472 | ||
1473 | while (i < len && (**debug_args)[i] != DECL_ORIGIN (parm)) | |
1474 | i += 2; | |
1475 | if (i >= len) | |
1476 | { | |
1477 | i = 0; | |
1478 | while (i < last | |
1479 | && (**debug_args)[i] != DECL_ORIGIN (parm)) | |
1480 | i += 2; | |
1481 | if (i >= last) | |
1482 | continue; | |
1483 | } | |
1484 | tree ddecl = (**debug_args)[i + 1]; | |
1485 | tree arg = gimple_call_arg (e->call_stmt, num); | |
1486 | if (!useless_type_conversion_p (TREE_TYPE (ddecl), | |
1487 | TREE_TYPE (arg))) | |
1488 | { | |
1489 | tree rhs1; | |
1490 | if (!fold_convertible_p (TREE_TYPE (ddecl), arg)) | |
1491 | continue; | |
1492 | if (TREE_CODE (arg) == SSA_NAME | |
1493 | && gimple_assign_cast_p (SSA_NAME_DEF_STMT (arg)) | |
1494 | && (rhs1 | |
1495 | = gimple_assign_rhs1 (SSA_NAME_DEF_STMT (arg))) | |
1496 | && useless_type_conversion_p (TREE_TYPE (ddecl), | |
1497 | TREE_TYPE (rhs1))) | |
1498 | arg = rhs1; | |
1499 | else | |
1500 | arg = fold_convert (TREE_TYPE (ddecl), arg); | |
1501 | } | |
1502 | ||
1503 | gimple *def_temp | |
1504 | = gimple_build_debug_bind (ddecl, unshare_expr (arg), | |
1505 | e->call_stmt); | |
1506 | gsi_insert_before (&gsi, def_temp, GSI_SAME_STMT); | |
1507 | } | |
1508 | } | |
1509 | } | |
1510 | ||
66a20fc2 JH |
1511 | gsi_replace (&gsi, new_stmt, false); |
1512 | /* We need to defer cleaning EH info on the new statement to | |
1513 | fixup-cfg. We may not have dominator information at this point | |
1514 | and thus would end up with unreachable blocks and have no way | |
1515 | to communicate that we need to run CFG cleanup then. */ | |
1516 | lp_nr = lookup_stmt_eh_lp (e->call_stmt); | |
1517 | if (lp_nr != 0) | |
1518 | { | |
1519 | remove_stmt_from_eh_lp (e->call_stmt); | |
1520 | add_stmt_to_eh_lp (new_stmt, lp_nr); | |
1521 | } | |
1522 | } | |
1523 | else | |
1524 | { | |
1525 | new_stmt = e->call_stmt; | |
67348ccc | 1526 | gimple_call_set_fndecl (new_stmt, e->callee->decl); |
6a58ccca | 1527 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), new_stmt); |
66a20fc2 JH |
1528 | } |
1529 | ||
1f91747b JJ |
1530 | /* If changing the call to __cxa_pure_virtual or similar noreturn function, |
1531 | adjust gimple_call_fntype too. */ | |
1532 | if (gimple_call_noreturn_p (new_stmt) | |
1533 | && VOID_TYPE_P (TREE_TYPE (TREE_TYPE (e->callee->decl))) | |
1534 | && TYPE_ARG_TYPES (TREE_TYPE (e->callee->decl)) | |
1535 | && (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (e->callee->decl))) | |
1536 | == void_type_node)) | |
1537 | gimple_call_set_fntype (new_stmt, TREE_TYPE (e->callee->decl)); | |
1538 | ||
e6a54b01 | 1539 | /* If the call becomes noreturn, remove the LHS if possible. */ |
77f1efdb | 1540 | tree lhs = gimple_call_lhs (new_stmt); |
1f91747b JJ |
1541 | if (lhs |
1542 | && gimple_call_noreturn_p (new_stmt) | |
1543 | && (VOID_TYPE_P (TREE_TYPE (gimple_call_fntype (new_stmt))) | |
1544 | || should_remove_lhs_p (lhs))) | |
23a04216 JH |
1545 | { |
1546 | if (TREE_CODE (lhs) == SSA_NAME) | |
1547 | { | |
45b62594 RB |
1548 | tree var = create_tmp_reg_fn (DECL_STRUCT_FUNCTION (e->caller->decl), |
1549 | TREE_TYPE (lhs), NULL); | |
1550 | var = get_or_create_ssa_default_def | |
1551 | (DECL_STRUCT_FUNCTION (e->caller->decl), var); | |
355fe088 | 1552 | gimple *set_stmt = gimple_build_assign (lhs, var); |
23a04216 | 1553 | gsi = gsi_for_stmt (new_stmt); |
45b62594 RB |
1554 | gsi_insert_before_without_update (&gsi, set_stmt, GSI_SAME_STMT); |
1555 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), set_stmt); | |
23a04216 JH |
1556 | } |
1557 | gimple_call_set_lhs (new_stmt, NULL_TREE); | |
1f91035f JH |
1558 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), new_stmt); |
1559 | } | |
1560 | ||
1561 | /* If new callee has no static chain, remove it. */ | |
1562 | if (gimple_call_chain (new_stmt) && !DECL_STATIC_CHAIN (e->callee->decl)) | |
1563 | { | |
1564 | gimple_call_set_chain (new_stmt, NULL); | |
1565 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), new_stmt); | |
23a04216 JH |
1566 | } |
1567 | ||
0b986c6a JH |
1568 | maybe_remove_unused_call_args (DECL_STRUCT_FUNCTION (e->caller->decl), |
1569 | new_stmt); | |
1570 | ||
d52f5295 | 1571 | e->caller->set_call_stmt_including_clones (e->call_stmt, new_stmt, false); |
66a20fc2 | 1572 | |
3dafb85c | 1573 | if (symtab->dump_file) |
66a20fc2 | 1574 | { |
3dafb85c ML |
1575 | fprintf (symtab->dump_file, " updated to:"); |
1576 | print_gimple_stmt (symtab->dump_file, e->call_stmt, 0, dump_flags); | |
66a20fc2 JH |
1577 | } |
1578 | return new_stmt; | |
1579 | } | |
726a989a RB |
1580 | |
1581 | /* Update or remove the corresponding cgraph edge if a GIMPLE_CALL | |
4b685e14 | 1582 | OLD_STMT changed into NEW_STMT. OLD_CALL is gimple_call_fndecl |
a9d24544 JJ |
1583 | of OLD_STMT if it was previously call statement. |
1584 | If NEW_STMT is NULL, the call has been dropped without any | |
1585 | replacement. */ | |
2bafad93 | 1586 | |
9187e02d | 1587 | static void |
3dafb85c | 1588 | cgraph_update_edges_for_call_stmt_node (cgraph_node *node, |
355fe088 TS |
1589 | gimple *old_stmt, tree old_call, |
1590 | gimple *new_stmt) | |
2bafad93 | 1591 | { |
a9d24544 JJ |
1592 | tree new_call = (new_stmt && is_gimple_call (new_stmt)) |
1593 | ? gimple_call_fndecl (new_stmt) : 0; | |
2bafad93 | 1594 | |
4b685e14 JH |
1595 | /* We are seeing indirect calls, then there is nothing to update. */ |
1596 | if (!new_call && !old_call) | |
1597 | return; | |
1598 | /* See if we turned indirect call into direct call or folded call to one builtin | |
61502ca8 | 1599 | into different builtin. */ |
2bafad93 JJ |
1600 | if (old_call != new_call) |
1601 | { | |
3dafb85c ML |
1602 | cgraph_edge *e = node->get_edge (old_stmt); |
1603 | cgraph_edge *ne = NULL; | |
3995f3a2 | 1604 | profile_count count; |
4b685e14 | 1605 | int frequency; |
2bafad93 JJ |
1606 | |
1607 | if (e) | |
1608 | { | |
1f4eb0e9 | 1609 | /* Keep calls marked as dead dead. */ |
931c8e9a | 1610 | if (new_stmt && is_gimple_call (new_stmt) && e->callee |
1f4eb0e9 JH |
1611 | && DECL_BUILT_IN_CLASS (e->callee->decl) == BUILT_IN_NORMAL |
1612 | && DECL_FUNCTION_CODE (e->callee->decl) == BUILT_IN_UNREACHABLE) | |
1613 | { | |
1614 | node->get_edge (old_stmt)->set_call_stmt | |
1615 | (as_a <gcall *> (new_stmt)); | |
1616 | return; | |
1617 | } | |
e33c6cd6 MJ |
1618 | /* See if the edge is already there and has the correct callee. It |
1619 | might be so because of indirect inlining has already updated | |
97ba0040 JH |
1620 | it. We also might've cloned and redirected the edge. */ |
1621 | if (new_call && e->callee) | |
1622 | { | |
3dafb85c | 1623 | cgraph_node *callee = e->callee; |
97ba0040 JH |
1624 | while (callee) |
1625 | { | |
67348ccc | 1626 | if (callee->decl == new_call |
97ba0040 | 1627 | || callee->former_clone_of == new_call) |
eb14a79f | 1628 | { |
538dd0b7 | 1629 | e->set_call_stmt (as_a <gcall *> (new_stmt)); |
eb14a79f ML |
1630 | return; |
1631 | } | |
97ba0040 JH |
1632 | callee = callee->clone_of; |
1633 | } | |
1634 | } | |
4b685e14 JH |
1635 | |
1636 | /* Otherwise remove edge and create new one; we can't simply redirect | |
1637 | since function has changed, so inline plan and other information | |
1638 | attached to edge is invalid. */ | |
4b685e14 JH |
1639 | count = e->count; |
1640 | frequency = e->frequency; | |
2dbe8b70 | 1641 | if (e->indirect_unknown_callee || e->inline_failed) |
3dafb85c | 1642 | e->remove (); |
2dbe8b70 | 1643 | else |
d52f5295 | 1644 | e->callee->remove_symbol_and_inline_clones (); |
4b685e14 | 1645 | } |
a9d24544 | 1646 | else if (new_call) |
4b685e14 JH |
1647 | { |
1648 | /* We are seeing new direct call; compute profile info based on BB. */ | |
1649 | basic_block bb = gimple_bb (new_stmt); | |
1650 | count = bb->count; | |
1651 | frequency = compute_call_stmt_bb_frequency (current_function_decl, | |
1652 | bb); | |
2bafad93 | 1653 | } |
2bafad93 | 1654 | |
4b685e14 JH |
1655 | if (new_call) |
1656 | { | |
d52f5295 | 1657 | ne = node->create_edge (cgraph_node::get_create (new_call), |
538dd0b7 DM |
1658 | as_a <gcall *> (new_stmt), count, |
1659 | frequency); | |
4b685e14 JH |
1660 | gcc_assert (ne->inline_failed); |
1661 | } | |
2bafad93 | 1662 | } |
4b685e14 JH |
1663 | /* We only updated the call stmt; update pointer in cgraph edge.. */ |
1664 | else if (old_stmt != new_stmt) | |
538dd0b7 | 1665 | node->get_edge (old_stmt)->set_call_stmt (as_a <gcall *> (new_stmt)); |
2bafad93 JJ |
1666 | } |
1667 | ||
9187e02d | 1668 | /* Update or remove the corresponding cgraph edge if a GIMPLE_CALL |
4b685e14 JH |
1669 | OLD_STMT changed into NEW_STMT. OLD_DECL is gimple_call_fndecl |
1670 | of OLD_STMT before it was updated (updating can happen inplace). */ | |
9187e02d JH |
1671 | |
1672 | void | |
355fe088 TS |
1673 | cgraph_update_edges_for_call_stmt (gimple *old_stmt, tree old_decl, |
1674 | gimple *new_stmt) | |
9187e02d | 1675 | { |
3dafb85c ML |
1676 | cgraph_node *orig = cgraph_node::get (cfun->decl); |
1677 | cgraph_node *node; | |
9187e02d | 1678 | |
a358e188 | 1679 | gcc_checking_assert (orig); |
4b685e14 | 1680 | cgraph_update_edges_for_call_stmt_node (orig, old_stmt, old_decl, new_stmt); |
9187e02d JH |
1681 | if (orig->clones) |
1682 | for (node = orig->clones; node != orig;) | |
1683 | { | |
4b685e14 | 1684 | cgraph_update_edges_for_call_stmt_node (node, old_stmt, old_decl, new_stmt); |
9187e02d JH |
1685 | if (node->clones) |
1686 | node = node->clones; | |
1687 | else if (node->next_sibling_clone) | |
1688 | node = node->next_sibling_clone; | |
1689 | else | |
1690 | { | |
1691 | while (node != orig && !node->next_sibling_clone) | |
1692 | node = node->clone_of; | |
1693 | if (node != orig) | |
1694 | node = node->next_sibling_clone; | |
1695 | } | |
1696 | } | |
1697 | } | |
1698 | ||
726a989a | 1699 | |
2563c224 RG |
1700 | /* Remove all callees from the node. */ |
1701 | ||
1702 | void | |
d52f5295 | 1703 | cgraph_node::remove_callees (void) |
2563c224 | 1704 | { |
3dafb85c | 1705 | cgraph_edge *e, *f; |
2563c224 RG |
1706 | |
1707 | /* It is sufficient to remove the edges from the lists of callers of | |
1708 | the callees. The callee list of the node can be zapped with one | |
1709 | assignment. */ | |
d52f5295 | 1710 | for (e = callees; e; e = f) |
9088c1cc | 1711 | { |
5c0466b5 | 1712 | f = e->next_callee; |
3dafb85c | 1713 | symtab->call_edge_removal_hooks (e); |
e33c6cd6 | 1714 | if (!e->indirect_unknown_callee) |
3dafb85c ML |
1715 | e->remove_callee (); |
1716 | symtab->free_edge (e); | |
9088c1cc | 1717 | } |
d52f5295 | 1718 | for (e = indirect_calls; e; e = f) |
5f902d76 JH |
1719 | { |
1720 | f = e->next_callee; | |
3dafb85c | 1721 | symtab->call_edge_removal_hooks (e); |
5f902d76 | 1722 | if (!e->indirect_unknown_callee) |
3dafb85c ML |
1723 | e->remove_callee (); |
1724 | symtab->free_edge (e); | |
5f902d76 | 1725 | } |
d52f5295 ML |
1726 | indirect_calls = NULL; |
1727 | callees = NULL; | |
1728 | if (call_site_hash) | |
70d539ce | 1729 | { |
2a22f99c | 1730 | call_site_hash->empty (); |
d52f5295 | 1731 | call_site_hash = NULL; |
70d539ce | 1732 | } |
2563c224 RG |
1733 | } |
1734 | ||
1735 | /* Remove all callers from the node. */ | |
1736 | ||
d52f5295 ML |
1737 | void |
1738 | cgraph_node::remove_callers (void) | |
2563c224 | 1739 | { |
3dafb85c | 1740 | cgraph_edge *e, *f; |
2563c224 RG |
1741 | |
1742 | /* It is sufficient to remove the edges from the lists of callees of | |
1743 | the callers. The caller list of the node can be zapped with one | |
1744 | assignment. */ | |
d52f5295 | 1745 | for (e = callers; e; e = f) |
9088c1cc | 1746 | { |
5c0466b5 | 1747 | f = e->next_caller; |
3dafb85c ML |
1748 | symtab->call_edge_removal_hooks (e); |
1749 | e->remove_caller (); | |
1750 | symtab->free_edge (e); | |
9088c1cc | 1751 | } |
d52f5295 | 1752 | callers = NULL; |
18c6ada9 JH |
1753 | } |
1754 | ||
49bde175 JH |
1755 | /* Helper function for cgraph_release_function_body and free_lang_data. |
1756 | It releases body from function DECL without having to inspect its | |
1757 | possibly non-existent symtab node. */ | |
3a40c18a JH |
1758 | |
1759 | void | |
49bde175 | 1760 | release_function_body (tree decl) |
3a40c18a | 1761 | { |
61183076 RB |
1762 | function *fn = DECL_STRUCT_FUNCTION (decl); |
1763 | if (fn) | |
3a40c18a | 1764 | { |
61183076 | 1765 | if (fn->cfg |
381cdae4 | 1766 | && loops_for_fn (fn)) |
936fc9ba | 1767 | { |
381cdae4 RB |
1768 | fn->curr_properties &= ~PROP_loops; |
1769 | loop_optimizer_finalize (fn); | |
1770 | } | |
1771 | if (fn->gimple_df) | |
1772 | { | |
1773 | delete_tree_ssa (fn); | |
1774 | fn->eh = NULL; | |
1775 | } | |
1776 | if (fn->cfg) | |
1777 | { | |
1778 | gcc_assert (!dom_info_available_p (fn, CDI_DOMINATORS)); | |
1779 | gcc_assert (!dom_info_available_p (fn, CDI_POST_DOMINATORS)); | |
1780 | delete_tree_cfg_annotations (fn); | |
1781 | clear_edges (fn); | |
1782 | fn->cfg = NULL; | |
936fc9ba | 1783 | } |
381cdae4 RB |
1784 | if (fn->value_histograms) |
1785 | free_histograms (fn); | |
49bde175 | 1786 | gimple_set_body (decl, NULL); |
936fc9ba JH |
1787 | /* Struct function hangs a lot of data that would leak if we didn't |
1788 | removed all pointers to it. */ | |
61183076 | 1789 | ggc_free (fn); |
49bde175 JH |
1790 | DECL_STRUCT_FUNCTION (decl) = NULL; |
1791 | } | |
1792 | DECL_SAVED_TREE (decl) = NULL; | |
1793 | } | |
1794 | ||
d52f5295 | 1795 | /* Release memory used to represent body of function. |
49bde175 JH |
1796 | Use this only for functions that are released before being translated to |
1797 | target code (i.e. RTL). Functions that are compiled to RTL and beyond | |
bf898b30 ML |
1798 | are free'd in final.c via free_after_compilation(). |
1799 | KEEP_ARGUMENTS are useful only if you want to rebuild body as thunk. */ | |
49bde175 JH |
1800 | |
1801 | void | |
bf898b30 | 1802 | cgraph_node::release_body (bool keep_arguments) |
49bde175 | 1803 | { |
d52f5295 | 1804 | ipa_transforms_to_apply.release (); |
3dafb85c | 1805 | if (!used_as_abstract_origin && symtab->state != PARSING) |
49bde175 | 1806 | { |
d52f5295 | 1807 | DECL_RESULT (decl) = NULL; |
bf898b30 ML |
1808 | |
1809 | if (!keep_arguments) | |
1810 | DECL_ARGUMENTS (decl) = NULL; | |
3a40c18a | 1811 | } |
026c3cfd AH |
1812 | /* If the node is abstract and needed, then do not clear |
1813 | DECL_INITIAL of its associated function declaration because it's | |
6b20f353 | 1814 | needed to emit debug info later. */ |
d52f5295 ML |
1815 | if (!used_as_abstract_origin && DECL_INITIAL (decl)) |
1816 | DECL_INITIAL (decl) = error_mark_node; | |
1817 | release_function_body (decl); | |
1818 | if (lto_file_data) | |
1c4db829 JH |
1819 | { |
1820 | lto_free_function_in_decl_state_for_node (this); | |
1821 | lto_file_data = NULL; | |
1822 | } | |
3a40c18a JH |
1823 | } |
1824 | ||
d52f5295 | 1825 | /* Remove function from symbol table. */ |
18d13f34 JH |
1826 | |
1827 | void | |
d52f5295 | 1828 | cgraph_node::remove (void) |
18d13f34 | 1829 | { |
3dafb85c | 1830 | cgraph_node *n; |
d52f5295 | 1831 | int uid = this->uid; |
18c6ada9 | 1832 | |
0bdad123 ML |
1833 | if (symtab->ipa_clones_dump_file && symtab->cloned_nodes.contains (this)) |
1834 | fprintf (symtab->ipa_clones_dump_file, | |
1835 | "Callgraph removal;%s;%d;%s;%d;%d\n", asm_name (), order, | |
1836 | DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl), | |
1837 | DECL_SOURCE_COLUMN (decl)); | |
1838 | ||
3dafb85c | 1839 | symtab->call_cgraph_removal_hooks (this); |
d52f5295 ML |
1840 | remove_callers (); |
1841 | remove_callees (); | |
1842 | ipa_transforms_to_apply.release (); | |
266ad5c8 | 1843 | |
96fc428c JH |
1844 | /* Incremental inlining access removed nodes stored in the postorder list. |
1845 | */ | |
d52f5295 ML |
1846 | force_output = false; |
1847 | forced_by_abi = false; | |
1848 | for (n = nested; n; n = n->next_nested) | |
ca30a539 | 1849 | n->origin = NULL; |
d52f5295 ML |
1850 | nested = NULL; |
1851 | if (origin) | |
18d13f34 | 1852 | { |
3dafb85c | 1853 | cgraph_node **node2 = &origin->nested; |
18d13f34 | 1854 | |
d52f5295 | 1855 | while (*node2 != this) |
18d13f34 | 1856 | node2 = &(*node2)->next_nested; |
d52f5295 | 1857 | *node2 = next_nested; |
18d13f34 | 1858 | } |
d52f5295 ML |
1859 | unregister (); |
1860 | if (prev_sibling_clone) | |
1861 | prev_sibling_clone->next_sibling_clone = next_sibling_clone; | |
1862 | else if (clone_of) | |
1863 | clone_of->clones = next_sibling_clone; | |
1864 | if (next_sibling_clone) | |
1865 | next_sibling_clone->prev_sibling_clone = prev_sibling_clone; | |
1866 | if (clones) | |
18c6ada9 | 1867 | { |
3dafb85c | 1868 | cgraph_node *n, *next; |
47cb0d7d | 1869 | |
d52f5295 | 1870 | if (clone_of) |
47cb0d7d | 1871 | { |
d52f5295 ML |
1872 | for (n = clones; n->next_sibling_clone; n = n->next_sibling_clone) |
1873 | n->clone_of = clone_of; | |
1874 | n->clone_of = clone_of; | |
1875 | n->next_sibling_clone = clone_of->clones; | |
1876 | if (clone_of->clones) | |
1877 | clone_of->clones->prev_sibling_clone = n; | |
1878 | clone_of->clones = clones; | |
47cb0d7d JH |
1879 | } |
1880 | else | |
1881 | { | |
66a20fc2 | 1882 | /* We are removing node with clones. This makes clones inconsistent, |
47cb0d7d JH |
1883 | but assume they will be removed subsequently and just keep clone |
1884 | tree intact. This can happen in unreachable function removal since | |
1885 | we remove unreachable functions in random order, not by bottom-up | |
1886 | walk of clone trees. */ | |
d52f5295 | 1887 | for (n = clones; n; n = next) |
47cb0d7d JH |
1888 | { |
1889 | next = n->next_sibling_clone; | |
1890 | n->next_sibling_clone = NULL; | |
1891 | n->prev_sibling_clone = NULL; | |
1892 | n->clone_of = NULL; | |
1893 | } | |
1894 | } | |
18c6ada9 JH |
1895 | } |
1896 | ||
c22cacf3 | 1897 | /* While all the clones are removed after being proceeded, the function |
4a76d91a JH |
1898 | itself is kept in the cgraph even after it is compiled. Check whether |
1899 | we are done with this body and reclaim it proactively if this is the case. | |
1900 | */ | |
3dafb85c | 1901 | if (symtab->state != LTO_STREAMING) |
4f63dfc6 | 1902 | { |
d52f5295 | 1903 | n = cgraph_node::get (decl); |
4f63dfc6 JH |
1904 | if (!n |
1905 | || (!n->clones && !n->clone_of && !n->global.inlined_to | |
1c4db829 | 1906 | && ((symtab->global_info_ready || in_lto_p) |
67348ccc DM |
1907 | && (TREE_ASM_WRITTEN (n->decl) |
1908 | || DECL_EXTERNAL (n->decl) | |
1909 | || !n->analyzed | |
1910 | || (!flag_wpa && n->in_other_partition))))) | |
d52f5295 | 1911 | release_body (); |
4f63dfc6 | 1912 | } |
1c4db829 JH |
1913 | else |
1914 | { | |
1915 | lto_free_function_in_decl_state_for_node (this); | |
1916 | lto_file_data = NULL; | |
1917 | } | |
1ab24192 | 1918 | |
d52f5295 ML |
1919 | decl = NULL; |
1920 | if (call_site_hash) | |
70d539ce | 1921 | { |
2a22f99c | 1922 | call_site_hash->empty (); |
d52f5295 | 1923 | call_site_hash = NULL; |
70d539ce | 1924 | } |
2fb16412 | 1925 | |
d5e254e1 IE |
1926 | if (instrumented_version) |
1927 | { | |
1928 | instrumented_version->instrumented_version = NULL; | |
1929 | instrumented_version = NULL; | |
1930 | } | |
1931 | ||
3dafb85c | 1932 | symtab->release_symbol (this, uid); |
18d13f34 JH |
1933 | } |
1934 | ||
39ff5a96 JH |
1935 | /* Likewise indicate that a node is having address taken. */ |
1936 | ||
1937 | void | |
d52f5295 | 1938 | cgraph_node::mark_address_taken (void) |
39ff5a96 | 1939 | { |
4502fe8d MJ |
1940 | /* Indirect inlining can figure out that all uses of the address are |
1941 | inlined. */ | |
d52f5295 | 1942 | if (global.inlined_to) |
4502fe8d MJ |
1943 | { |
1944 | gcc_assert (cfun->after_inlining); | |
d52f5295 | 1945 | gcc_assert (callers->indirect_inlining_edge); |
4502fe8d MJ |
1946 | return; |
1947 | } | |
39e2db00 JH |
1948 | /* FIXME: address_taken flag is used both as a shortcut for testing whether |
1949 | IPA_REF_ADDR reference exists (and thus it should be set on node | |
1950 | representing alias we take address of) and as a test whether address | |
1951 | of the object was taken (and thus it should be set on node alias is | |
1952 | referring to). We should remove the first use and the remove the | |
1953 | following set. */ | |
d52f5295 ML |
1954 | address_taken = 1; |
1955 | cgraph_node *node = ultimate_alias_target (); | |
67348ccc | 1956 | node->address_taken = 1; |
39ff5a96 JH |
1957 | } |
1958 | ||
dafc5b82 JH |
1959 | /* Return local info for the compiled function. */ |
1960 | ||
3dafb85c ML |
1961 | cgraph_local_info * |
1962 | cgraph_node::local_info (tree decl) | |
dafc5b82 | 1963 | { |
341c100f | 1964 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
3dafb85c | 1965 | cgraph_node *node = get (decl); |
9f9ebcdf MJ |
1966 | if (!node) |
1967 | return NULL; | |
4bd019b8 | 1968 | return &node->ultimate_alias_target ()->local; |
dafc5b82 JH |
1969 | } |
1970 | ||
b255a036 JH |
1971 | /* Return local info for the compiled function. */ |
1972 | ||
3dafb85c ML |
1973 | cgraph_rtl_info * |
1974 | cgraph_node::rtl_info (tree decl) | |
b255a036 | 1975 | { |
341c100f | 1976 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
3dafb85c | 1977 | cgraph_node *node = get (decl); |
4bd019b8 JH |
1978 | if (!node) |
1979 | return NULL; | |
fc15d9ec JJ |
1980 | enum availability avail; |
1981 | node = node->ultimate_alias_target (&avail); | |
1982 | if (decl != current_function_decl | |
1983 | && (avail < AVAIL_AVAILABLE | |
1984 | || (node->decl != current_function_decl | |
1985 | && !TREE_ASM_WRITTEN (node->decl)))) | |
b255a036 | 1986 | return NULL; |
fc15d9ec JJ |
1987 | /* Allocate if it doesn't exist. */ |
1988 | if (node->rtl == NULL) | |
1989 | node->rtl = ggc_cleared_alloc<cgraph_rtl_info> (); | |
1990 | return node->rtl; | |
b255a036 JH |
1991 | } |
1992 | ||
61a05df1 JH |
1993 | /* Return a string describing the failure REASON. */ |
1994 | ||
1995 | const char* | |
1996 | cgraph_inline_failed_string (cgraph_inline_failed_t reason) | |
1997 | { | |
1998 | #undef DEFCIFCODE | |
1cf11770 | 1999 | #define DEFCIFCODE(code, type, string) string, |
61a05df1 JH |
2000 | |
2001 | static const char *cif_string_table[CIF_N_REASONS] = { | |
2002 | #include "cif-code.def" | |
2003 | }; | |
2004 | ||
2005 | /* Signedness of an enum type is implementation defined, so cast it | |
2006 | to unsigned before testing. */ | |
2007 | gcc_assert ((unsigned) reason < CIF_N_REASONS); | |
2008 | return cif_string_table[reason]; | |
2009 | } | |
2010 | ||
1cf11770 L |
2011 | /* Return a type describing the failure REASON. */ |
2012 | ||
2013 | cgraph_inline_failed_type_t | |
2014 | cgraph_inline_failed_type (cgraph_inline_failed_t reason) | |
2015 | { | |
2016 | #undef DEFCIFCODE | |
2017 | #define DEFCIFCODE(code, type, string) type, | |
2018 | ||
2019 | static cgraph_inline_failed_type_t cif_type_table[CIF_N_REASONS] = { | |
2020 | #include "cif-code.def" | |
2021 | }; | |
2022 | ||
2023 | /* Signedness of an enum type is implementation defined, so cast it | |
2024 | to unsigned before testing. */ | |
2025 | gcc_assert ((unsigned) reason < CIF_N_REASONS); | |
2026 | return cif_type_table[reason]; | |
2027 | } | |
2028 | ||
6b02a499 | 2029 | /* Names used to print out the availability enum. */ |
8a4a83ed | 2030 | const char * const cgraph_availability_names[] = |
fa10beec | 2031 | {"unset", "not_available", "overwritable", "available", "local"}; |
6b02a499 | 2032 | |
90988f77 | 2033 | /* Output flags of edge to a file F. */ |
ba392339 | 2034 | |
90988f77 ML |
2035 | void |
2036 | cgraph_edge::dump_edge_flags (FILE *f) | |
ba392339 | 2037 | { |
90988f77 | 2038 | if (speculative) |
ba392339 | 2039 | fprintf (f, "(speculative) "); |
90988f77 | 2040 | if (!inline_failed) |
ba392339 | 2041 | fprintf (f, "(inlined) "); |
1a0bf5e1 JH |
2042 | if (call_stmt_cannot_inline_p) |
2043 | fprintf (f, "(call_stmt_cannot_inline_p) "); | |
90988f77 | 2044 | if (indirect_inlining_edge) |
ba392339 | 2045 | fprintf (f, "(indirect_inlining) "); |
3995f3a2 JH |
2046 | if (count.initialized_p ()) |
2047 | { | |
2048 | fprintf (f, "("); | |
2049 | count.dump (f); | |
2050 | fprintf (f, ")"); | |
2051 | } | |
90988f77 ML |
2052 | if (frequency) |
2053 | fprintf (f, "(%.2f per call) ", frequency / (double)CGRAPH_FREQ_BASE); | |
2054 | if (can_throw_external) | |
ba392339 JH |
2055 | fprintf (f, "(can throw external) "); |
2056 | } | |
c4e622b6 | 2057 | |
d52f5295 | 2058 | /* Dump call graph node to file F. */ |
c4e622b6 | 2059 | |
18c6ada9 | 2060 | void |
d52f5295 | 2061 | cgraph_node::dump (FILE *f) |
18c6ada9 | 2062 | { |
3dafb85c | 2063 | cgraph_edge *edge; |
e33c6cd6 | 2064 | |
d52f5295 | 2065 | dump_base (f); |
8f940ee6 | 2066 | |
d52f5295 | 2067 | if (global.inlined_to) |
464d0118 ML |
2068 | fprintf (f, " Function %s is inline copy in %s\n", |
2069 | dump_name (), | |
2070 | global.inlined_to->dump_name ()); | |
d52f5295 | 2071 | if (clone_of) |
464d0118 | 2072 | fprintf (f, " Clone of %s\n", clone_of->dump_asm_name ()); |
3dafb85c | 2073 | if (symtab->function_flags_ready) |
8f940ee6 | 2074 | fprintf (f, " Availability: %s\n", |
d52f5295 | 2075 | cgraph_availability_names [get_availability ()]); |
8f940ee6 | 2076 | |
d52f5295 | 2077 | if (profile_id) |
634ab819 | 2078 | fprintf (f, " Profile id: %i\n", |
d52f5295 ML |
2079 | profile_id); |
2080 | fprintf (f, " First run: %i\n", tp_first_run); | |
9e57787b ML |
2081 | cgraph_function_version_info *vi = function_version (); |
2082 | if (vi != NULL) | |
2083 | { | |
2084 | fprintf (f, " Version info: "); | |
2085 | if (vi->prev != NULL) | |
2086 | { | |
2087 | fprintf (f, "prev: "); | |
464d0118 | 2088 | fprintf (f, "%s ", vi->prev->this_node->dump_asm_name ()); |
9e57787b ML |
2089 | } |
2090 | if (vi->next != NULL) | |
2091 | { | |
2092 | fprintf (f, "next: "); | |
464d0118 | 2093 | fprintf (f, "%s ", vi->next->this_node->dump_asm_name ()); |
9e57787b ML |
2094 | } |
2095 | if (vi->dispatcher_resolver != NULL_TREE) | |
2096 | fprintf (f, "dispatcher: %s", | |
2097 | lang_hooks.decl_printable_name (vi->dispatcher_resolver, 2)); | |
2098 | ||
2099 | fprintf (f, "\n"); | |
2100 | } | |
8f940ee6 | 2101 | fprintf (f, " Function flags:"); |
3995f3a2 JH |
2102 | if (count.initialized_p ()) |
2103 | { | |
7c41b76e | 2104 | fprintf (f, " count: "); |
3995f3a2 JH |
2105 | count.dump (f); |
2106 | } | |
d52f5295 ML |
2107 | if (origin) |
2108 | fprintf (f, " nested in: %s", origin->asm_name ()); | |
2109 | if (gimple_has_body_p (decl)) | |
726a989a | 2110 | fprintf (f, " body"); |
d52f5295 | 2111 | if (process) |
257eb6e3 | 2112 | fprintf (f, " process"); |
d52f5295 | 2113 | if (local.local) |
18c6ada9 | 2114 | fprintf (f, " local"); |
d52f5295 | 2115 | if (local.redefined_extern_inline) |
e7d6beb0 | 2116 | fprintf (f, " redefined_extern_inline"); |
d52f5295 | 2117 | if (only_called_at_startup) |
844db5d0 | 2118 | fprintf (f, " only_called_at_startup"); |
d52f5295 | 2119 | if (only_called_at_exit) |
844db5d0 | 2120 | fprintf (f, " only_called_at_exit"); |
d52f5295 | 2121 | if (tm_clone) |
0a35513e | 2122 | fprintf (f, " tm_clone"); |
c6cf6ef7 ML |
2123 | if (calls_comdat_local) |
2124 | fprintf (f, " calls_comdat_local"); | |
b84d4347 ML |
2125 | if (icf_merged) |
2126 | fprintf (f, " icf_merged"); | |
88636b62 JH |
2127 | if (merged_comdat) |
2128 | fprintf (f, " merged_comdat"); | |
4f4ada6a JH |
2129 | if (split_part) |
2130 | fprintf (f, " split_part"); | |
2131 | if (indirect_call_target) | |
2132 | fprintf (f, " indirect_call_target"); | |
8413ca87 JJ |
2133 | if (nonfreeing_fn) |
2134 | fprintf (f, " nonfreeing_fn"); | |
d52f5295 ML |
2135 | if (DECL_STATIC_CONSTRUCTOR (decl)) |
2136 | fprintf (f," static_constructor (priority:%i)", get_init_priority ()); | |
2137 | if (DECL_STATIC_DESTRUCTOR (decl)) | |
2138 | fprintf (f," static_destructor (priority:%i)", get_fini_priority ()); | |
a89bd7d2 JH |
2139 | if (frequency == NODE_FREQUENCY_HOT) |
2140 | fprintf (f, " hot"); | |
2141 | if (frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED) | |
2142 | fprintf (f, " unlikely_executed"); | |
2143 | if (frequency == NODE_FREQUENCY_EXECUTED_ONCE) | |
2144 | fprintf (f, " executed_once"); | |
2145 | if (only_called_at_startup) | |
2146 | fprintf (f, " only_called_at_startup"); | |
2147 | if (only_called_at_exit) | |
2148 | fprintf (f, " only_called_at_exit"); | |
2149 | if (opt_for_fn (decl, optimize_size)) | |
2150 | fprintf (f, " optimize_size"); | |
a79b7ec5 TV |
2151 | if (parallelized_function) |
2152 | fprintf (f, " parallelized_function"); | |
18c6ada9 | 2153 | |
c47d0034 JH |
2154 | fprintf (f, "\n"); |
2155 | ||
d52f5295 | 2156 | if (thunk.thunk_p) |
c47d0034 | 2157 | { |
40a7fe1e | 2158 | fprintf (f, " Thunk"); |
d52f5295 | 2159 | if (thunk.alias) |
40a7fe1e | 2160 | fprintf (f, " of %s (asm: %s)", |
d52f5295 ML |
2161 | lang_hooks.decl_printable_name (thunk.alias, 2), |
2162 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk.alias))); | |
40a7fe1e | 2163 | fprintf (f, " fixed offset %i virtual value %i has " |
c47d0034 | 2164 | "virtual offset %i)\n", |
d52f5295 ML |
2165 | (int)thunk.fixed_offset, |
2166 | (int)thunk.virtual_value, | |
2167 | (int)thunk.virtual_offset_p); | |
c47d0034 | 2168 | } |
d52f5295 ML |
2169 | if (alias && thunk.alias |
2170 | && DECL_P (thunk.alias)) | |
39e2db00 | 2171 | { |
8f940ee6 | 2172 | fprintf (f, " Alias of %s", |
d52f5295 ML |
2173 | lang_hooks.decl_printable_name (thunk.alias, 2)); |
2174 | if (DECL_ASSEMBLER_NAME_SET_P (thunk.alias)) | |
39e2db00 | 2175 | fprintf (f, " (asm: %s)", |
d52f5295 | 2176 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk.alias))); |
39e2db00 JH |
2177 | fprintf (f, "\n"); |
2178 | } | |
c47d0034 | 2179 | |
8f940ee6 | 2180 | fprintf (f, " Called by: "); |
c47d0034 | 2181 | |
7c41b76e | 2182 | profile_count sum = profile_count::zero (); |
d52f5295 | 2183 | for (edge = callers; edge; edge = edge->next_caller) |
18c6ada9 | 2184 | { |
464d0118 | 2185 | fprintf (f, "%s ", edge->caller->dump_name ()); |
90988f77 | 2186 | edge->dump_edge_flags (f); |
7c41b76e JH |
2187 | if (edge->count.initialized_p ()) |
2188 | sum += edge->count; | |
18c6ada9 JH |
2189 | } |
2190 | ||
8f940ee6 | 2191 | fprintf (f, "\n Calls: "); |
d52f5295 | 2192 | for (edge = callees; edge; edge = edge->next_callee) |
18c6ada9 | 2193 | { |
464d0118 | 2194 | fprintf (f, "%s ", edge->callee->dump_name ()); |
90988f77 | 2195 | edge->dump_edge_flags (f); |
18c6ada9 JH |
2196 | } |
2197 | fprintf (f, "\n"); | |
6744a6ab | 2198 | |
7c41b76e JH |
2199 | if (count.initialized_p ()) |
2200 | { | |
2201 | bool ok = true; | |
2202 | bool min = false; | |
2203 | ipa_ref *ref; | |
2204 | ||
2205 | FOR_EACH_ALIAS (this, ref) | |
2206 | if (dyn_cast <cgraph_node *> (ref->referring)->count.initialized_p ()) | |
2207 | sum += dyn_cast <cgraph_node *> (ref->referring)->count; | |
2208 | ||
2209 | if (global.inlined_to | |
2210 | || (symtab->state < EXPANSION | |
2211 | && ultimate_alias_target () == this && only_called_directly_p ())) | |
2212 | ok = !count.differs_from_p (sum); | |
2213 | else if (count > profile_count::from_gcov_type (100) | |
2214 | && count < sum.apply_scale (99, 100)) | |
2215 | ok = false, min = true; | |
2216 | if (!ok) | |
2217 | { | |
2218 | fprintf (f, " Invalid sum of caller counts "); | |
2219 | sum.dump (f); | |
2220 | if (min) | |
2221 | fprintf (f, ", should be at most "); | |
2222 | else | |
2223 | fprintf (f, ", should be "); | |
2224 | count.dump (f); | |
2225 | fprintf (f, "\n"); | |
2226 | } | |
2227 | } | |
2228 | ||
d52f5295 | 2229 | for (edge = indirect_calls; edge; edge = edge->next_callee) |
ba392339 JH |
2230 | { |
2231 | if (edge->indirect_info->polymorphic) | |
2232 | { | |
2233 | fprintf (f, " Polymorphic indirect call of type "); | |
2234 | print_generic_expr (f, edge->indirect_info->otr_type, TDF_SLIM); | |
2235 | fprintf (f, " token:%i", (int) edge->indirect_info->otr_token); | |
2236 | } | |
2237 | else | |
2238 | fprintf (f, " Indirect call"); | |
90988f77 | 2239 | edge->dump_edge_flags (f); |
ba392339 JH |
2240 | if (edge->indirect_info->param_index != -1) |
2241 | { | |
2242 | fprintf (f, " of param:%i", edge->indirect_info->param_index); | |
2243 | if (edge->indirect_info->agg_contents) | |
2244 | fprintf (f, " loaded from %s %s at offset %i", | |
2245 | edge->indirect_info->member_ptr ? "member ptr" : "aggregate", | |
2246 | edge->indirect_info->by_ref ? "passed by reference":"", | |
2247 | (int)edge->indirect_info->offset); | |
0127c169 JH |
2248 | if (edge->indirect_info->vptr_changed) |
2249 | fprintf (f, " (vptr maybe changed)"); | |
ba392339 JH |
2250 | } |
2251 | fprintf (f, "\n"); | |
2252 | if (edge->indirect_info->polymorphic) | |
2253 | edge->indirect_info->context.dump (f); | |
2254 | } | |
d5e254e1 IE |
2255 | |
2256 | if (instrumentation_clone) | |
2257 | fprintf (f, " Is instrumented version.\n"); | |
2258 | else if (instrumented_version) | |
2259 | fprintf (f, " Has instrumented version.\n"); | |
18c6ada9 JH |
2260 | } |
2261 | ||
c4e622b6 DN |
2262 | /* Dump call graph node NODE to stderr. */ |
2263 | ||
24e47c76 | 2264 | DEBUG_FUNCTION void |
d52f5295 | 2265 | cgraph_node::debug (void) |
c4e622b6 | 2266 | { |
d52f5295 | 2267 | dump (stderr); |
c4e622b6 DN |
2268 | } |
2269 | ||
c4e622b6 | 2270 | /* Dump the callgraph to file F. */ |
e72fcfe8 JH |
2271 | |
2272 | void | |
d52f5295 | 2273 | cgraph_node::dump_cgraph (FILE *f) |
e72fcfe8 | 2274 | { |
3dafb85c | 2275 | cgraph_node *node; |
e72fcfe8 | 2276 | |
7d82fe7c | 2277 | fprintf (f, "callgraph:\n\n"); |
65c70e6b | 2278 | FOR_EACH_FUNCTION (node) |
d52f5295 | 2279 | node->dump (f); |
c4e622b6 DN |
2280 | } |
2281 | ||
1bb17c21 | 2282 | /* Return true when the DECL can possibly be inlined. */ |
d52f5295 | 2283 | |
1bb17c21 JH |
2284 | bool |
2285 | cgraph_function_possibly_inlined_p (tree decl) | |
2286 | { | |
3dafb85c | 2287 | if (!symtab->global_info_ready) |
e90acd93 | 2288 | return !DECL_UNINLINABLE (decl); |
6f312d18 | 2289 | return DECL_POSSIBLY_INLINED (decl); |
18c6ada9 JH |
2290 | } |
2291 | ||
d52f5295 | 2292 | /* cgraph_node is no longer nested function; update cgraph accordingly. */ |
8f235343 | 2293 | void |
d52f5295 | 2294 | cgraph_node::unnest (void) |
8f235343 | 2295 | { |
3dafb85c | 2296 | cgraph_node **node2 = &origin->nested; |
d52f5295 | 2297 | gcc_assert (origin); |
8f235343 | 2298 | |
d52f5295 | 2299 | while (*node2 != this) |
8f235343 | 2300 | node2 = &(*node2)->next_nested; |
d52f5295 ML |
2301 | *node2 = next_nested; |
2302 | origin = NULL; | |
8f235343 | 2303 | } |
6b02a499 JH |
2304 | |
2305 | /* Return function availability. See cgraph.h for description of individual | |
2306 | return values. */ | |
2307 | enum availability | |
f13fe18b | 2308 | cgraph_node::get_availability (symtab_node *ref) |
6b02a499 | 2309 | { |
f13fe18b JH |
2310 | if (ref) |
2311 | { | |
2312 | cgraph_node *cref = dyn_cast <cgraph_node *> (ref); | |
2313 | if (cref) | |
2314 | ref = cref->global.inlined_to; | |
2315 | } | |
6b02a499 | 2316 | enum availability avail; |
d52f5295 | 2317 | if (!analyzed) |
6b02a499 | 2318 | avail = AVAIL_NOT_AVAILABLE; |
d52f5295 | 2319 | else if (local.local) |
6b02a499 | 2320 | avail = AVAIL_LOCAL; |
f13fe18b JH |
2321 | else if (global.inlined_to) |
2322 | avail = AVAIL_AVAILABLE; | |
71e54687 | 2323 | else if (transparent_alias) |
f13fe18b | 2324 | ultimate_alias_target (&avail, ref); |
036ea399 JJ |
2325 | else if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (decl)) |
2326 | || lookup_attribute ("noipa", DECL_ATTRIBUTES (decl))) | |
d52f5295 ML |
2327 | avail = AVAIL_INTERPOSABLE; |
2328 | else if (!externally_visible) | |
6b02a499 | 2329 | avail = AVAIL_AVAILABLE; |
f13fe18b | 2330 | /* If this is a reference from symbol itself and there are no aliases, we |
65c74eb2 | 2331 | may be sure that the symbol was not interposed by something else because |
f13fe18b JH |
2332 | the symbol itself would be unreachable otherwise. |
2333 | ||
2334 | Also comdat groups are always resolved in groups. */ | |
2335 | else if ((this == ref && !has_aliases_p ()) | |
2336 | || (ref && get_comdat_group () | |
2337 | && get_comdat_group () == ref->get_comdat_group ())) | |
2338 | avail = AVAIL_AVAILABLE; | |
61502ca8 NF |
2339 | /* Inline functions are safe to be analyzed even if their symbol can |
2340 | be overwritten at runtime. It is not meaningful to enforce any sane | |
9c582551 | 2341 | behavior on replacing inline function by different body. */ |
d52f5295 | 2342 | else if (DECL_DECLARED_INLINE_P (decl)) |
4a371c8d | 2343 | avail = AVAIL_AVAILABLE; |
6b02a499 JH |
2344 | |
2345 | /* If the function can be overwritten, return OVERWRITABLE. Take | |
2346 | care at least of two notable extensions - the COMDAT functions | |
2347 | used to share template instantiations in C++ (this is symmetric | |
2348 | to code cp_cannot_inline_tree_fn and probably shall be shared and | |
f13fe18b | 2349 | the inlinability hooks completely eliminated). */ |
4a371c8d | 2350 | |
d52f5295 ML |
2351 | else if (decl_replaceable_p (decl) && !DECL_EXTERNAL (decl)) |
2352 | avail = AVAIL_INTERPOSABLE; | |
6b02a499 JH |
2353 | else avail = AVAIL_AVAILABLE; |
2354 | ||
2355 | return avail; | |
2356 | } | |
2357 | ||
be330ed4 JH |
2358 | /* Worker for cgraph_node_can_be_local_p. */ |
2359 | static bool | |
3dafb85c | 2360 | cgraph_node_cannot_be_local_p_1 (cgraph_node *node, void *) |
be330ed4 | 2361 | { |
67348ccc DM |
2362 | return !(!node->force_output |
2363 | && ((DECL_COMDAT (node->decl) | |
2364 | && !node->forced_by_abi | |
d52f5295 | 2365 | && !node->used_from_object_file_p () |
67348ccc DM |
2366 | && !node->same_comdat_group) |
2367 | || !node->externally_visible)); | |
be330ed4 JH |
2368 | } |
2369 | ||
d52f5295 | 2370 | /* Return true if cgraph_node can be made local for API change. |
a550d677 MJ |
2371 | Extern inline functions and C++ COMDAT functions can be made local |
2372 | at the expense of possible code size growth if function is used in multiple | |
2373 | compilation units. */ | |
2374 | bool | |
d52f5295 | 2375 | cgraph_node::can_be_local_p (void) |
a550d677 | 2376 | { |
d52f5295 ML |
2377 | return (!address_taken |
2378 | && !call_for_symbol_thunks_and_aliases (cgraph_node_cannot_be_local_p_1, | |
2379 | NULL, true)); | |
a550d677 MJ |
2380 | } |
2381 | ||
6cbde2e3 | 2382 | /* Call callback on cgraph_node, thunks and aliases associated to cgraph_node. |
6b715bf6 | 2383 | When INCLUDE_OVERWRITABLE is false, overwritable symbols are |
6cbde2e3 BE |
2384 | skipped. When EXCLUDE_VIRTUAL_THUNKS is true, virtual thunks are |
2385 | skipped. */ | |
be330ed4 | 2386 | bool |
d52f5295 ML |
2387 | cgraph_node::call_for_symbol_thunks_and_aliases (bool (*callback) |
2388 | (cgraph_node *, void *), | |
2389 | void *data, | |
6cbde2e3 BE |
2390 | bool include_overwritable, |
2391 | bool exclude_virtual_thunks) | |
be330ed4 | 2392 | { |
3dafb85c ML |
2393 | cgraph_edge *e; |
2394 | ipa_ref *ref; | |
6b715bf6 | 2395 | enum availability avail = AVAIL_AVAILABLE; |
be330ed4 | 2396 | |
6b715bf6 JH |
2397 | if (include_overwritable |
2398 | || (avail = get_availability ()) > AVAIL_INTERPOSABLE) | |
2399 | { | |
2400 | if (callback (this, data)) | |
2401 | return true; | |
2402 | } | |
1ede94c5 JH |
2403 | FOR_EACH_ALIAS (this, ref) |
2404 | { | |
2405 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2406 | if (include_overwritable | |
2407 | || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2408 | if (alias->call_for_symbol_thunks_and_aliases (callback, data, | |
2409 | include_overwritable, | |
2410 | exclude_virtual_thunks)) | |
2411 | return true; | |
2412 | } | |
6b715bf6 | 2413 | if (avail <= AVAIL_INTERPOSABLE) |
69a4e898 | 2414 | return false; |
d52f5295 | 2415 | for (e = callers; e; e = e->next_caller) |
be330ed4 JH |
2416 | if (e->caller->thunk.thunk_p |
2417 | && (include_overwritable | |
6cbde2e3 BE |
2418 | || e->caller->get_availability () > AVAIL_INTERPOSABLE) |
2419 | && !(exclude_virtual_thunks | |
2420 | && e->caller->thunk.virtual_offset_p)) | |
d52f5295 | 2421 | if (e->caller->call_for_symbol_thunks_and_aliases (callback, data, |
6cbde2e3 BE |
2422 | include_overwritable, |
2423 | exclude_virtual_thunks)) | |
9aa3f5c5 | 2424 | return true; |
e55637b7 | 2425 | |
be330ed4 JH |
2426 | return false; |
2427 | } | |
2428 | ||
be330ed4 JH |
2429 | /* Worker to bring NODE local. */ |
2430 | ||
d52f5295 | 2431 | bool |
3dafb85c | 2432 | cgraph_node::make_local (cgraph_node *node, void *) |
be330ed4 | 2433 | { |
d52f5295 | 2434 | gcc_checking_assert (node->can_be_local_p ()); |
67348ccc | 2435 | if (DECL_COMDAT (node->decl) || DECL_EXTERNAL (node->decl)) |
a550d677 | 2436 | { |
d52f5295 | 2437 | node->make_decl_local (); |
da66d596 | 2438 | node->set_section (NULL); |
24d047a3 | 2439 | node->set_comdat_group (NULL); |
67348ccc DM |
2440 | node->externally_visible = false; |
2441 | node->forced_by_abi = false; | |
a550d677 | 2442 | node->local.local = true; |
da66d596 | 2443 | node->set_section (NULL); |
f1703a2e JH |
2444 | node->unique_name = ((node->resolution == LDPR_PREVAILING_DEF_IRONLY |
2445 | || node->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP) | |
2446 | && !flag_incremental_link); | |
67348ccc | 2447 | node->resolution = LDPR_PREVAILING_DEF_IRONLY; |
d52f5295 | 2448 | gcc_assert (node->get_availability () == AVAIL_LOCAL); |
a550d677 | 2449 | } |
be330ed4 | 2450 | return false; |
a550d677 MJ |
2451 | } |
2452 | ||
d52f5295 | 2453 | /* Bring cgraph node local. */ |
be330ed4 JH |
2454 | |
2455 | void | |
d52f5295 | 2456 | cgraph_node::make_local (void) |
be330ed4 | 2457 | { |
d52f5295 | 2458 | call_for_symbol_thunks_and_aliases (cgraph_node::make_local, NULL, true); |
be330ed4 JH |
2459 | } |
2460 | ||
2461 | /* Worker to set nothrow flag. */ | |
2462 | ||
a2b056a3 JH |
2463 | static void |
2464 | set_nothrow_flag_1 (cgraph_node *node, bool nothrow, bool non_call, | |
2465 | bool *changed) | |
be330ed4 | 2466 | { |
3dafb85c | 2467 | cgraph_edge *e; |
71fb4f92 | 2468 | |
a2b056a3 JH |
2469 | if (nothrow && !TREE_NOTHROW (node->decl)) |
2470 | { | |
2471 | /* With non-call exceptions we can't say for sure if other function body | |
2472 | was not possibly optimized to stil throw. */ | |
2473 | if (!non_call || node->binds_to_current_def_p ()) | |
2474 | { | |
2475 | TREE_NOTHROW (node->decl) = true; | |
2476 | *changed = true; | |
2477 | for (e = node->callers; e; e = e->next_caller) | |
2478 | e->can_throw_external = false; | |
2479 | } | |
2480 | } | |
2481 | else if (!nothrow && TREE_NOTHROW (node->decl)) | |
2482 | { | |
2483 | TREE_NOTHROW (node->decl) = false; | |
2484 | *changed = true; | |
2485 | } | |
2486 | ipa_ref *ref; | |
2487 | FOR_EACH_ALIAS (node, ref) | |
2488 | { | |
2489 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2490 | if (!nothrow || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2491 | set_nothrow_flag_1 (alias, nothrow, non_call, changed); | |
2492 | } | |
2493 | for (cgraph_edge *e = node->callers; e; e = e->next_caller) | |
2494 | if (e->caller->thunk.thunk_p | |
2495 | && (!nothrow || e->caller->get_availability () > AVAIL_INTERPOSABLE)) | |
2496 | set_nothrow_flag_1 (e->caller, nothrow, non_call, changed); | |
be330ed4 JH |
2497 | } |
2498 | ||
2499 | /* Set TREE_NOTHROW on NODE's decl and on aliases of NODE | |
20cdc2be JJ |
2500 | if any to NOTHROW. */ |
2501 | ||
a2b056a3 | 2502 | bool |
d52f5295 | 2503 | cgraph_node::set_nothrow_flag (bool nothrow) |
20cdc2be | 2504 | { |
a2b056a3 JH |
2505 | bool changed = false; |
2506 | bool non_call = opt_for_fn (decl, flag_non_call_exceptions); | |
2507 | ||
2508 | if (!nothrow || get_availability () > AVAIL_INTERPOSABLE) | |
2509 | set_nothrow_flag_1 (this, nothrow, non_call, &changed); | |
2510 | else | |
2511 | { | |
2512 | ipa_ref *ref; | |
2513 | ||
2514 | FOR_EACH_ALIAS (this, ref) | |
2515 | { | |
2516 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2517 | if (!nothrow || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2518 | set_nothrow_flag_1 (alias, nothrow, non_call, &changed); | |
2519 | } | |
2520 | } | |
2521 | return changed; | |
20cdc2be JJ |
2522 | } |
2523 | ||
69a4e898 | 2524 | /* Worker to set_const_flag. */ |
20cdc2be | 2525 | |
69a4e898 JH |
2526 | static void |
2527 | set_const_flag_1 (cgraph_node *node, bool set_const, bool looping, | |
2528 | bool *changed) | |
20cdc2be | 2529 | { |
530f3a1b JH |
2530 | /* Static constructors and destructors without a side effect can be |
2531 | optimized out. */ | |
69a4e898 | 2532 | if (set_const && !looping) |
530f3a1b | 2533 | { |
67348ccc | 2534 | if (DECL_STATIC_CONSTRUCTOR (node->decl)) |
69a4e898 JH |
2535 | { |
2536 | DECL_STATIC_CONSTRUCTOR (node->decl) = 0; | |
2537 | *changed = true; | |
2538 | } | |
67348ccc | 2539 | if (DECL_STATIC_DESTRUCTOR (node->decl)) |
69a4e898 JH |
2540 | { |
2541 | DECL_STATIC_DESTRUCTOR (node->decl) = 0; | |
2542 | *changed = true; | |
2543 | } | |
530f3a1b | 2544 | } |
69a4e898 JH |
2545 | if (!set_const) |
2546 | { | |
2547 | if (TREE_READONLY (node->decl)) | |
2548 | { | |
2549 | TREE_READONLY (node->decl) = 0; | |
2550 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2551 | *changed = true; | |
2552 | } | |
2553 | } | |
2554 | else | |
2555 | { | |
2556 | /* Consider function: | |
cc950f98 | 2557 | |
69a4e898 JH |
2558 | bool a(int *p) |
2559 | { | |
2560 | return *p==*p; | |
2561 | } | |
cc950f98 | 2562 | |
69a4e898 | 2563 | During early optimization we will turn this into: |
cc950f98 | 2564 | |
69a4e898 JH |
2565 | bool a(int *p) |
2566 | { | |
2567 | return true; | |
2568 | } | |
cc950f98 | 2569 | |
69a4e898 JH |
2570 | Now if this function will be detected as CONST however when interposed |
2571 | it may end up being just pure. We always must assume the worst | |
2572 | scenario here. */ | |
2573 | if (TREE_READONLY (node->decl)) | |
2574 | { | |
2575 | if (!looping && DECL_LOOPING_CONST_OR_PURE_P (node->decl)) | |
2576 | { | |
2577 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2578 | *changed = true; | |
2579 | } | |
2580 | } | |
2581 | else if (node->binds_to_current_def_p ()) | |
2582 | { | |
2583 | TREE_READONLY (node->decl) = true; | |
2584 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping; | |
2585 | DECL_PURE_P (node->decl) = false; | |
2586 | *changed = true; | |
2587 | } | |
2588 | else | |
2589 | { | |
2590 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2591 | fprintf (dump_file, "Dropping state to PURE because function does " | |
2592 | "not bind to current def.\n"); | |
2593 | if (!DECL_PURE_P (node->decl)) | |
2594 | { | |
2595 | DECL_PURE_P (node->decl) = true; | |
2596 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping; | |
2597 | *changed = true; | |
2598 | } | |
2599 | else if (!looping && DECL_LOOPING_CONST_OR_PURE_P (node->decl)) | |
2600 | { | |
2601 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2602 | *changed = true; | |
2603 | } | |
2604 | } | |
2605 | } | |
cc950f98 | 2606 | |
69a4e898 JH |
2607 | ipa_ref *ref; |
2608 | FOR_EACH_ALIAS (node, ref) | |
cc950f98 | 2609 | { |
69a4e898 JH |
2610 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); |
2611 | if (!set_const || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2612 | set_const_flag_1 (alias, set_const, looping, changed); | |
cc950f98 | 2613 | } |
69a4e898 JH |
2614 | for (cgraph_edge *e = node->callers; e; e = e->next_caller) |
2615 | if (e->caller->thunk.thunk_p | |
2616 | && (!set_const || e->caller->get_availability () > AVAIL_INTERPOSABLE)) | |
2617 | { | |
2618 | /* Virtual thunks access virtual offset in the vtable, so they can | |
2619 | only be pure, never const. */ | |
2620 | if (set_const | |
2621 | && (e->caller->thunk.virtual_offset_p | |
2622 | || !node->binds_to_current_def_p (e->caller))) | |
2623 | *changed |= e->caller->set_pure_flag (true, looping); | |
2624 | else | |
2625 | set_const_flag_1 (e->caller, set_const, looping, changed); | |
2626 | } | |
20cdc2be JJ |
2627 | } |
2628 | ||
69a4e898 JH |
2629 | /* If SET_CONST is true, mark function, aliases and thunks to be ECF_CONST. |
2630 | If SET_CONST if false, clear the flag. | |
20cdc2be | 2631 | |
69a4e898 JH |
2632 | When setting the flag be careful about possible interposition and |
2633 | do not set the flag for functions that can be interposet and set pure | |
2634 | flag for functions that can bind to other definition. | |
2635 | ||
2636 | Return true if any change was done. */ | |
2637 | ||
2638 | bool | |
2639 | cgraph_node::set_const_flag (bool set_const, bool looping) | |
20cdc2be | 2640 | { |
69a4e898 JH |
2641 | bool changed = false; |
2642 | if (!set_const || get_availability () > AVAIL_INTERPOSABLE) | |
2643 | set_const_flag_1 (this, set_const, looping, &changed); | |
2644 | else | |
2645 | { | |
2646 | ipa_ref *ref; | |
2647 | ||
2648 | FOR_EACH_ALIAS (this, ref) | |
2649 | { | |
2650 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2651 | if (!set_const || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2652 | set_const_flag_1 (alias, set_const, looping, &changed); | |
2653 | } | |
2654 | } | |
2655 | return changed; | |
be330ed4 JH |
2656 | } |
2657 | ||
69a4e898 JH |
2658 | /* Info used by set_pure_flag_1. */ |
2659 | ||
a2b056a3 | 2660 | struct set_pure_flag_info |
69a4e898 JH |
2661 | { |
2662 | bool pure; | |
2663 | bool looping; | |
2664 | bool changed; | |
2665 | }; | |
2666 | ||
2667 | /* Worker to set_pure_flag. */ | |
be330ed4 JH |
2668 | |
2669 | static bool | |
69a4e898 | 2670 | set_pure_flag_1 (cgraph_node *node, void *data) |
be330ed4 | 2671 | { |
69a4e898 | 2672 | struct set_pure_flag_info *info = (struct set_pure_flag_info *)data; |
a1ffba98 | 2673 | /* Static constructors and destructors without a side effect can be |
530f3a1b | 2674 | optimized out. */ |
69a4e898 | 2675 | if (info->pure && !info->looping) |
530f3a1b | 2676 | { |
67348ccc | 2677 | if (DECL_STATIC_CONSTRUCTOR (node->decl)) |
69a4e898 JH |
2678 | { |
2679 | DECL_STATIC_CONSTRUCTOR (node->decl) = 0; | |
2680 | info->changed = true; | |
2681 | } | |
67348ccc | 2682 | if (DECL_STATIC_DESTRUCTOR (node->decl)) |
69a4e898 JH |
2683 | { |
2684 | DECL_STATIC_DESTRUCTOR (node->decl) = 0; | |
2685 | info->changed = true; | |
2686 | } | |
2687 | } | |
2688 | if (info->pure) | |
2689 | { | |
2690 | if (!DECL_PURE_P (node->decl) && !TREE_READONLY (node->decl)) | |
2691 | { | |
2692 | DECL_PURE_P (node->decl) = true; | |
2693 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = info->looping; | |
2694 | info->changed = true; | |
2695 | } | |
2696 | else if (DECL_LOOPING_CONST_OR_PURE_P (node->decl) | |
2697 | && !info->looping) | |
2698 | { | |
2699 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2700 | info->changed = true; | |
2701 | } | |
2702 | } | |
2703 | else | |
2704 | { | |
2705 | if (DECL_PURE_P (node->decl)) | |
2706 | { | |
2707 | DECL_PURE_P (node->decl) = false; | |
2708 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2709 | info->changed = true; | |
2710 | } | |
530f3a1b | 2711 | } |
be330ed4 | 2712 | return false; |
20cdc2be JJ |
2713 | } |
2714 | ||
d52f5295 | 2715 | /* Set DECL_PURE_P on cgraph_node's decl and on aliases of the node |
69a4e898 | 2716 | if any to PURE. |
be330ed4 | 2717 | |
69a4e898 JH |
2718 | When setting the flag, be careful about possible interposition. |
2719 | Return true if any change was done. */ | |
2720 | ||
2721 | bool | |
d52f5295 | 2722 | cgraph_node::set_pure_flag (bool pure, bool looping) |
fa5f5e27 | 2723 | { |
69a4e898 JH |
2724 | struct set_pure_flag_info info = {pure, looping, false}; |
2725 | if (!pure) | |
2726 | looping = false; | |
2727 | call_for_symbol_thunks_and_aliases (set_pure_flag_1, &info, !pure, true); | |
2728 | return info.changed; | |
be330ed4 | 2729 | } |
844db5d0 | 2730 | |
d52f5295 | 2731 | /* Return true when cgraph_node can not return or throw and thus |
d56026c2 JH |
2732 | it is safe to ignore its side effects for IPA analysis. */ |
2733 | ||
2734 | bool | |
d52f5295 | 2735 | cgraph_node::cannot_return_p (void) |
d56026c2 | 2736 | { |
d52f5295 | 2737 | int flags = flags_from_decl_or_type (decl); |
a6b1490d | 2738 | if (!opt_for_fn (decl, flag_exceptions)) |
d56026c2 JH |
2739 | return (flags & ECF_NORETURN) != 0; |
2740 | else | |
2741 | return ((flags & (ECF_NORETURN | ECF_NOTHROW)) | |
2742 | == (ECF_NORETURN | ECF_NOTHROW)); | |
2743 | } | |
2744 | ||
3dafb85c | 2745 | /* Return true when call of edge can not lead to return from caller |
d56026c2 JH |
2746 | and thus it is safe to ignore its side effects for IPA analysis |
2747 | when computing side effects of the caller. | |
2748 | FIXME: We could actually mark all edges that have no reaching | |
6626665f | 2749 | patch to the exit block or throw to get better results. */ |
d56026c2 | 2750 | bool |
3dafb85c | 2751 | cgraph_edge::cannot_lead_to_return_p (void) |
d56026c2 | 2752 | { |
3dafb85c | 2753 | if (caller->cannot_return_p ()) |
f10ea640 | 2754 | return true; |
3dafb85c | 2755 | if (indirect_unknown_callee) |
d56026c2 | 2756 | { |
3dafb85c | 2757 | int flags = indirect_info->ecf_flags; |
a6b1490d | 2758 | if (!opt_for_fn (caller->decl, flag_exceptions)) |
d56026c2 JH |
2759 | return (flags & ECF_NORETURN) != 0; |
2760 | else | |
2761 | return ((flags & (ECF_NORETURN | ECF_NOTHROW)) | |
2762 | == (ECF_NORETURN | ECF_NOTHROW)); | |
2763 | } | |
2764 | else | |
3dafb85c | 2765 | return callee->cannot_return_p (); |
d56026c2 JH |
2766 | } |
2767 | ||
893479de AM |
2768 | /* Return true if the call can be hot. */ |
2769 | ||
2770 | bool | |
2771 | cgraph_edge::maybe_hot_p (void) | |
2772 | { | |
ee4e85b7 | 2773 | if (!maybe_hot_count_p (NULL, count)) |
893479de AM |
2774 | return false; |
2775 | if (caller->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED | |
2776 | || (callee | |
2777 | && callee->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED)) | |
2778 | return false; | |
2779 | if (caller->frequency > NODE_FREQUENCY_UNLIKELY_EXECUTED | |
2780 | && (callee | |
2781 | && callee->frequency <= NODE_FREQUENCY_EXECUTED_ONCE)) | |
2782 | return false; | |
a6b1490d JH |
2783 | if (opt_for_fn (caller->decl, optimize_size)) |
2784 | return false; | |
893479de AM |
2785 | if (caller->frequency == NODE_FREQUENCY_HOT) |
2786 | return true; | |
3995f3a2 JH |
2787 | /* If profile is now known yet, be conservative. |
2788 | FIXME: this predicate is used by early inliner and can do better there. */ | |
2789 | if (symtab->state < IPA_SSA) | |
2790 | return true; | |
893479de AM |
2791 | if (caller->frequency == NODE_FREQUENCY_EXECUTED_ONCE |
2792 | && frequency < CGRAPH_FREQ_BASE * 3 / 2) | |
2793 | return false; | |
a6b1490d | 2794 | if (opt_for_fn (caller->decl, flag_guess_branch_prob)) |
893479de AM |
2795 | { |
2796 | if (PARAM_VALUE (HOT_BB_FREQUENCY_FRACTION) == 0 | |
2797 | || frequency <= (CGRAPH_FREQ_BASE | |
a6b1490d | 2798 | / PARAM_VALUE (HOT_BB_FREQUENCY_FRACTION))) |
893479de AM |
2799 | return false; |
2800 | } | |
2801 | return true; | |
2802 | } | |
2803 | ||
9aa3f5c5 JH |
2804 | /* Worker for cgraph_can_remove_if_no_direct_calls_p. */ |
2805 | ||
2806 | static bool | |
3dafb85c | 2807 | nonremovable_p (cgraph_node *node, void *) |
9aa3f5c5 | 2808 | { |
d52f5295 | 2809 | return !node->can_remove_if_no_direct_calls_and_refs_p (); |
9aa3f5c5 JH |
2810 | } |
2811 | ||
a6a543bf JH |
2812 | /* Return true if whole comdat group can be removed if there are no direct |
2813 | calls to THIS. */ | |
9aa3f5c5 JH |
2814 | |
2815 | bool | |
e0d514da | 2816 | cgraph_node::can_remove_if_no_direct_calls_p (bool will_inline) |
9aa3f5c5 | 2817 | { |
a6a543bf JH |
2818 | struct ipa_ref *ref; |
2819 | ||
2820 | /* For local symbols or non-comdat group it is the same as | |
2821 | can_remove_if_no_direct_calls_p. */ | |
2822 | if (!externally_visible || !same_comdat_group) | |
2823 | { | |
2824 | if (DECL_EXTERNAL (decl)) | |
2825 | return true; | |
2826 | if (address_taken) | |
2827 | return false; | |
2828 | return !call_for_symbol_and_aliases (nonremovable_p, NULL, true); | |
2829 | } | |
2830 | ||
e0d514da JH |
2831 | if (will_inline && address_taken) |
2832 | return false; | |
2833 | ||
a6a543bf JH |
2834 | /* Otheriwse check if we can remove the symbol itself and then verify |
2835 | that only uses of the comdat groups are direct call to THIS | |
2836 | or its aliases. */ | |
2837 | if (!can_remove_if_no_direct_calls_and_refs_p ()) | |
9aa3f5c5 | 2838 | return false; |
a6a543bf JH |
2839 | |
2840 | /* Check that all refs come from within the comdat group. */ | |
2841 | for (int i = 0; iterate_referring (i, ref); i++) | |
2842 | if (ref->referring->get_comdat_group () != get_comdat_group ()) | |
2843 | return false; | |
2844 | ||
2845 | struct cgraph_node *target = ultimate_alias_target (); | |
2846 | for (cgraph_node *next = dyn_cast<cgraph_node *> (same_comdat_group); | |
2847 | next != this; next = dyn_cast<cgraph_node *> (next->same_comdat_group)) | |
2848 | { | |
2849 | if (!externally_visible) | |
2850 | continue; | |
2851 | if (!next->alias | |
2852 | && !next->can_remove_if_no_direct_calls_and_refs_p ()) | |
2853 | return false; | |
2854 | ||
2855 | /* If we see different symbol than THIS, be sure to check calls. */ | |
2856 | if (next->ultimate_alias_target () != target) | |
2857 | for (cgraph_edge *e = next->callers; e; e = e->next_caller) | |
e0d514da JH |
2858 | if (e->caller->get_comdat_group () != get_comdat_group () |
2859 | || will_inline) | |
a6a543bf JH |
2860 | return false; |
2861 | ||
e0d514da JH |
2862 | /* If function is not being inlined, we care only about |
2863 | references outside of the comdat group. */ | |
2864 | if (!will_inline) | |
2865 | for (int i = 0; next->iterate_referring (i, ref); i++) | |
2866 | if (ref->referring->get_comdat_group () != get_comdat_group ()) | |
2867 | return false; | |
a6a543bf JH |
2868 | } |
2869 | return true; | |
9aa3f5c5 JH |
2870 | } |
2871 | ||
d52f5295 | 2872 | /* Return true when function cgraph_node can be expected to be removed |
09411461 JH |
2873 | from program when direct calls in this compilation unit are removed. |
2874 | ||
2875 | As a special case COMDAT functions are | |
2876 | cgraph_can_remove_if_no_direct_calls_p while the are not | |
2877 | cgraph_only_called_directly_p (it is possible they are called from other | |
2878 | unit) | |
2879 | ||
2880 | This function behaves as cgraph_only_called_directly_p because eliminating | |
61502ca8 | 2881 | all uses of COMDAT function does not make it necessarily disappear from |
09411461 JH |
2882 | the program unless we are compiling whole program or we do LTO. In this |
2883 | case we know we win since dynamic linking will not really discard the | |
2884 | linkonce section. */ | |
2885 | ||
2886 | bool | |
e0d514da JH |
2887 | cgraph_node::will_be_removed_from_program_if_no_direct_calls_p |
2888 | (bool will_inline) | |
09411461 | 2889 | { |
d52f5295 | 2890 | gcc_assert (!global.inlined_to); |
a6a543bf JH |
2891 | if (DECL_EXTERNAL (decl)) |
2892 | return true; | |
d52f5295 | 2893 | |
09411461 | 2894 | if (!in_lto_p && !flag_whole_program) |
530f3a1b | 2895 | { |
a6a543bf JH |
2896 | /* If the symbol is in comdat group, we need to verify that whole comdat |
2897 | group becomes unreachable. Technically we could skip references from | |
2898 | within the group, too. */ | |
2899 | if (!only_called_directly_p ()) | |
2900 | return false; | |
2901 | if (same_comdat_group && externally_visible) | |
2902 | { | |
2903 | struct cgraph_node *target = ultimate_alias_target (); | |
e0d514da JH |
2904 | |
2905 | if (will_inline && address_taken) | |
2906 | return true; | |
a6a543bf JH |
2907 | for (cgraph_node *next = dyn_cast<cgraph_node *> (same_comdat_group); |
2908 | next != this; | |
2909 | next = dyn_cast<cgraph_node *> (next->same_comdat_group)) | |
2910 | { | |
2911 | if (!externally_visible) | |
2912 | continue; | |
2913 | if (!next->alias | |
2914 | && !next->only_called_directly_p ()) | |
2915 | return false; | |
2916 | ||
2917 | /* If we see different symbol than THIS, | |
2918 | be sure to check calls. */ | |
2919 | if (next->ultimate_alias_target () != target) | |
2920 | for (cgraph_edge *e = next->callers; e; e = e->next_caller) | |
e0d514da JH |
2921 | if (e->caller->get_comdat_group () != get_comdat_group () |
2922 | || will_inline) | |
a6a543bf | 2923 | return false; |
a6a543bf JH |
2924 | } |
2925 | } | |
2926 | return true; | |
530f3a1b | 2927 | } |
a6a543bf | 2928 | else |
e0d514da | 2929 | return can_remove_if_no_direct_calls_p (will_inline); |
09411461 JH |
2930 | } |
2931 | ||
051f8cc6 | 2932 | |
be330ed4 JH |
2933 | /* Worker for cgraph_only_called_directly_p. */ |
2934 | ||
2935 | static bool | |
3dafb85c | 2936 | cgraph_not_only_called_directly_p_1 (cgraph_node *node, void *) |
be330ed4 | 2937 | { |
d52f5295 | 2938 | return !node->only_called_directly_or_aliased_p (); |
be330ed4 JH |
2939 | } |
2940 | ||
d52f5295 | 2941 | /* Return true when function cgraph_node and all its aliases are only called |
be330ed4 JH |
2942 | directly. |
2943 | i.e. it is not externally visible, address was not taken and | |
2944 | it is not used in any other non-standard way. */ | |
2945 | ||
2946 | bool | |
d52f5295 | 2947 | cgraph_node::only_called_directly_p (void) |
be330ed4 | 2948 | { |
d52f5295 ML |
2949 | gcc_assert (ultimate_alias_target () == this); |
2950 | return !call_for_symbol_and_aliases (cgraph_not_only_called_directly_p_1, | |
be330ed4 JH |
2951 | NULL, true); |
2952 | } | |
2953 | ||
2954 | ||
2955 | /* Collect all callers of NODE. Worker for collect_callers_of_node. */ | |
2956 | ||
2957 | static bool | |
3dafb85c | 2958 | collect_callers_of_node_1 (cgraph_node *node, void *data) |
be330ed4 | 2959 | { |
d52f5295 | 2960 | vec<cgraph_edge *> *redirect_callers = (vec<cgraph_edge *> *)data; |
3dafb85c | 2961 | cgraph_edge *cs; |
be330ed4 | 2962 | enum availability avail; |
d52f5295 | 2963 | node->ultimate_alias_target (&avail); |
be330ed4 | 2964 | |
d52f5295 | 2965 | if (avail > AVAIL_INTERPOSABLE) |
be330ed4 | 2966 | for (cs = node->callers; cs != NULL; cs = cs->next_caller) |
4a414de8 MJ |
2967 | if (!cs->indirect_inlining_edge |
2968 | && !cs->caller->thunk.thunk_p) | |
9771b263 | 2969 | redirect_callers->safe_push (cs); |
be330ed4 JH |
2970 | return false; |
2971 | } | |
2972 | ||
d52f5295 ML |
2973 | /* Collect all callers of cgraph_node and its aliases that are known to lead to |
2974 | cgraph_node (i.e. are not overwritable). */ | |
be330ed4 | 2975 | |
d52f5295 ML |
2976 | vec<cgraph_edge *> |
2977 | cgraph_node::collect_callers (void) | |
be330ed4 | 2978 | { |
d52f5295 ML |
2979 | vec<cgraph_edge *> redirect_callers = vNULL; |
2980 | call_for_symbol_thunks_and_aliases (collect_callers_of_node_1, | |
2981 | &redirect_callers, false); | |
be330ed4 JH |
2982 | return redirect_callers; |
2983 | } | |
2984 | ||
610c8ef0 MJ |
2985 | /* Return TRUE if NODE2 a clone of NODE or is equivalent to it. */ |
2986 | ||
9c8305f8 | 2987 | static bool |
3dafb85c | 2988 | clone_of_p (cgraph_node *node, cgraph_node *node2) |
9c8305f8 | 2989 | { |
610c8ef0 | 2990 | bool skipped_thunk = false; |
d52f5295 ML |
2991 | node = node->ultimate_alias_target (); |
2992 | node2 = node2->ultimate_alias_target (); | |
610c8ef0 MJ |
2993 | |
2994 | /* There are no virtual clones of thunks so check former_clone_of or if we | |
2995 | might have skipped thunks because this adjustments are no longer | |
2996 | necessary. */ | |
2997 | while (node->thunk.thunk_p) | |
2998 | { | |
2999 | if (node2->former_clone_of == node->decl) | |
3000 | return true; | |
3001 | if (!node->thunk.this_adjusting) | |
3002 | return false; | |
d52f5295 | 3003 | node = node->callees->callee->ultimate_alias_target (); |
610c8ef0 MJ |
3004 | skipped_thunk = true; |
3005 | } | |
3006 | ||
803d0ab0 MJ |
3007 | if (skipped_thunk) |
3008 | { | |
3009 | if (!node2->clone.args_to_skip | |
3010 | || !bitmap_bit_p (node2->clone.args_to_skip, 0)) | |
3011 | return false; | |
3012 | if (node2->former_clone_of == node->decl) | |
3013 | return true; | |
3014 | else if (!node2->clone_of) | |
3015 | return false; | |
3016 | } | |
610c8ef0 | 3017 | |
9c8305f8 JH |
3018 | while (node != node2 && node2) |
3019 | node2 = node2->clone_of; | |
3020 | return node2 != NULL; | |
3021 | } | |
3022 | ||
90988f77 | 3023 | /* Verify edge count and frequency. */ |
9c8305f8 | 3024 | |
90988f77 ML |
3025 | bool |
3026 | cgraph_edge::verify_count_and_frequency () | |
9c8305f8 JH |
3027 | { |
3028 | bool error_found = false; | |
90988f77 | 3029 | if (count < 0) |
9c8305f8 JH |
3030 | { |
3031 | error ("caller edge count is negative"); | |
3032 | error_found = true; | |
3033 | } | |
90988f77 | 3034 | if (frequency < 0) |
9c8305f8 JH |
3035 | { |
3036 | error ("caller edge frequency is negative"); | |
3037 | error_found = true; | |
3038 | } | |
90988f77 | 3039 | if (frequency > CGRAPH_FREQ_MAX) |
9c8305f8 JH |
3040 | { |
3041 | error ("caller edge frequency is too large"); | |
3042 | error_found = true; | |
3043 | } | |
9c8305f8 JH |
3044 | return error_found; |
3045 | } | |
3046 | ||
3047 | /* Switch to THIS_CFUN if needed and print STMT to stderr. */ | |
3048 | static void | |
355fe088 | 3049 | cgraph_debug_gimple_stmt (function *this_cfun, gimple *stmt) |
9c8305f8 | 3050 | { |
27f7e1c3 | 3051 | bool fndecl_was_null = false; |
9c8305f8 JH |
3052 | /* debug_gimple_stmt needs correct cfun */ |
3053 | if (cfun != this_cfun) | |
3054 | set_cfun (this_cfun); | |
27f7e1c3 AH |
3055 | /* ...and an actual current_function_decl */ |
3056 | if (!current_function_decl) | |
3057 | { | |
3058 | current_function_decl = this_cfun->decl; | |
3059 | fndecl_was_null = true; | |
3060 | } | |
9c8305f8 | 3061 | debug_gimple_stmt (stmt); |
27f7e1c3 AH |
3062 | if (fndecl_was_null) |
3063 | current_function_decl = NULL; | |
9c8305f8 JH |
3064 | } |
3065 | ||
90988f77 | 3066 | /* Verify that call graph edge corresponds to DECL from the associated |
9c8305f8 JH |
3067 | statement. Return true if the verification should fail. */ |
3068 | ||
90988f77 ML |
3069 | bool |
3070 | cgraph_edge::verify_corresponds_to_fndecl (tree decl) | |
9c8305f8 | 3071 | { |
3dafb85c | 3072 | cgraph_node *node; |
9c8305f8 | 3073 | |
90988f77 | 3074 | if (!decl || callee->global.inlined_to) |
9c8305f8 | 3075 | return false; |
3dafb85c | 3076 | if (symtab->state == LTO_STREAMING) |
ca0f62a8 | 3077 | return false; |
d52f5295 | 3078 | node = cgraph_node::get (decl); |
9c8305f8 JH |
3079 | |
3080 | /* We do not know if a node from a different partition is an alias or what it | |
3d8d0043 MJ |
3081 | aliases and therefore cannot do the former_clone_of check reliably. When |
3082 | body_removed is set, we have lost all information about what was alias or | |
3083 | thunk of and also cannot proceed. */ | |
3084 | if (!node | |
3085 | || node->body_removed | |
3086 | || node->in_other_partition | |
0a7246ee | 3087 | || callee->icf_merged |
90988f77 | 3088 | || callee->in_other_partition) |
9c8305f8 | 3089 | return false; |
9de6f6c3 | 3090 | |
d52f5295 ML |
3091 | node = node->ultimate_alias_target (); |
3092 | ||
9de6f6c3 | 3093 | /* Optimizers can redirect unreachable calls or calls triggering undefined |
9c582551 | 3094 | behavior to builtin_unreachable. */ |
90988f77 ML |
3095 | if (DECL_BUILT_IN_CLASS (callee->decl) == BUILT_IN_NORMAL |
3096 | && DECL_FUNCTION_CODE (callee->decl) == BUILT_IN_UNREACHABLE) | |
9de6f6c3 | 3097 | return false; |
9c8305f8 | 3098 | |
90988f77 ML |
3099 | if (callee->former_clone_of != node->decl |
3100 | && (node != callee->ultimate_alias_target ()) | |
3101 | && !clone_of_p (node, callee)) | |
9c8305f8 JH |
3102 | return true; |
3103 | else | |
3104 | return false; | |
3105 | } | |
3106 | ||
3107 | /* Verify cgraph nodes of given cgraph node. */ | |
3108 | DEBUG_FUNCTION void | |
d52f5295 | 3109 | cgraph_node::verify_node (void) |
9c8305f8 | 3110 | { |
3dafb85c ML |
3111 | cgraph_edge *e; |
3112 | function *this_cfun = DECL_STRUCT_FUNCTION (decl); | |
9c8305f8 JH |
3113 | basic_block this_block; |
3114 | gimple_stmt_iterator gsi; | |
3115 | bool error_found = false; | |
3116 | ||
3117 | if (seen_error ()) | |
3118 | return; | |
3119 | ||
3120 | timevar_push (TV_CGRAPH_VERIFY); | |
d52f5295 ML |
3121 | error_found |= verify_base (); |
3122 | for (e = callees; e; e = e->next_callee) | |
9c8305f8 JH |
3123 | if (e->aux) |
3124 | { | |
3125 | error ("aux field set for edge %s->%s", | |
fec39fa6 TS |
3126 | identifier_to_locale (e->caller->name ()), |
3127 | identifier_to_locale (e->callee->name ())); | |
9c8305f8 JH |
3128 | error_found = true; |
3129 | } | |
d52f5295 | 3130 | if (count < 0) |
9c8305f8 JH |
3131 | { |
3132 | error ("execution count is negative"); | |
3133 | error_found = true; | |
3134 | } | |
d52f5295 | 3135 | if (global.inlined_to && same_comdat_group) |
65d630d4 JH |
3136 | { |
3137 | error ("inline clone in same comdat group list"); | |
3138 | error_found = true; | |
3139 | } | |
d52f5295 | 3140 | if (!definition && !in_other_partition && local.local) |
e70670cf JH |
3141 | { |
3142 | error ("local symbols must be defined"); | |
3143 | error_found = true; | |
3144 | } | |
d52f5295 | 3145 | if (global.inlined_to && externally_visible) |
9c8305f8 JH |
3146 | { |
3147 | error ("externally visible inline clone"); | |
3148 | error_found = true; | |
3149 | } | |
d52f5295 | 3150 | if (global.inlined_to && address_taken) |
9c8305f8 JH |
3151 | { |
3152 | error ("inline clone with address taken"); | |
3153 | error_found = true; | |
3154 | } | |
d52f5295 | 3155 | if (global.inlined_to && force_output) |
9c8305f8 JH |
3156 | { |
3157 | error ("inline clone is forced to output"); | |
3158 | error_found = true; | |
3159 | } | |
d52f5295 | 3160 | for (e = indirect_calls; e; e = e->next_callee) |
9c8305f8 JH |
3161 | { |
3162 | if (e->aux) | |
3163 | { | |
3164 | error ("aux field set for indirect edge from %s", | |
fec39fa6 | 3165 | identifier_to_locale (e->caller->name ())); |
9c8305f8 JH |
3166 | error_found = true; |
3167 | } | |
3168 | if (!e->indirect_unknown_callee | |
3169 | || !e->indirect_info) | |
3170 | { | |
3171 | error ("An indirect edge from %s is not marked as indirect or has " | |
3172 | "associated indirect_info, the corresponding statement is: ", | |
fec39fa6 | 3173 | identifier_to_locale (e->caller->name ())); |
9c8305f8 JH |
3174 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
3175 | error_found = true; | |
3176 | } | |
3177 | } | |
d52f5295 ML |
3178 | bool check_comdat = comdat_local_p (); |
3179 | for (e = callers; e; e = e->next_caller) | |
9c8305f8 | 3180 | { |
90988f77 | 3181 | if (e->verify_count_and_frequency ()) |
9c8305f8 | 3182 | error_found = true; |
1f26ac87 | 3183 | if (check_comdat |
d52f5295 | 3184 | && !in_same_comdat_group_p (e->caller)) |
1f26ac87 JM |
3185 | { |
3186 | error ("comdat-local function called by %s outside its comdat", | |
3187 | identifier_to_locale (e->caller->name ())); | |
3188 | error_found = true; | |
3189 | } | |
9c8305f8 JH |
3190 | if (!e->inline_failed) |
3191 | { | |
d52f5295 | 3192 | if (global.inlined_to |
9c8305f8 JH |
3193 | != (e->caller->global.inlined_to |
3194 | ? e->caller->global.inlined_to : e->caller)) | |
3195 | { | |
3196 | error ("inlined_to pointer is wrong"); | |
3197 | error_found = true; | |
3198 | } | |
d52f5295 | 3199 | if (callers->next_caller) |
9c8305f8 JH |
3200 | { |
3201 | error ("multiple inline callers"); | |
3202 | error_found = true; | |
3203 | } | |
3204 | } | |
3205 | else | |
d52f5295 | 3206 | if (global.inlined_to) |
9c8305f8 JH |
3207 | { |
3208 | error ("inlined_to pointer set for noninline callers"); | |
3209 | error_found = true; | |
3210 | } | |
3211 | } | |
1f4eb0e9 JH |
3212 | for (e = callees; e; e = e->next_callee) |
3213 | { | |
3214 | if (e->verify_count_and_frequency ()) | |
3215 | error_found = true; | |
3216 | if (gimple_has_body_p (e->caller->decl) | |
3217 | && !e->caller->global.inlined_to | |
3218 | && !e->speculative | |
3219 | /* Optimized out calls are redirected to __builtin_unreachable. */ | |
3220 | && (e->frequency | |
ea6e17d5 RB |
3221 | || ! e->callee->decl |
3222 | || DECL_BUILT_IN_CLASS (e->callee->decl) != BUILT_IN_NORMAL | |
3223 | || DECL_FUNCTION_CODE (e->callee->decl) != BUILT_IN_UNREACHABLE) | |
1f4eb0e9 JH |
3224 | && (e->frequency |
3225 | != compute_call_stmt_bb_frequency (e->caller->decl, | |
3226 | gimple_bb (e->call_stmt)))) | |
3227 | { | |
3228 | error ("caller edge frequency %i does not match BB frequency %i", | |
3229 | e->frequency, | |
3230 | compute_call_stmt_bb_frequency (e->caller->decl, | |
3231 | gimple_bb (e->call_stmt))); | |
3232 | error_found = true; | |
3233 | } | |
3234 | } | |
d52f5295 | 3235 | for (e = indirect_calls; e; e = e->next_callee) |
1f4eb0e9 JH |
3236 | { |
3237 | if (e->verify_count_and_frequency ()) | |
3238 | error_found = true; | |
3239 | if (gimple_has_body_p (e->caller->decl) | |
3240 | && !e->caller->global.inlined_to | |
3241 | && !e->speculative | |
3242 | && (e->frequency | |
3243 | != compute_call_stmt_bb_frequency (e->caller->decl, | |
3244 | gimple_bb (e->call_stmt)))) | |
3245 | { | |
3246 | error ("indirect call frequency %i does not match BB frequency %i", | |
3247 | e->frequency, | |
3248 | compute_call_stmt_bb_frequency (e->caller->decl, | |
3249 | gimple_bb (e->call_stmt))); | |
3250 | error_found = true; | |
3251 | } | |
3252 | } | |
d52f5295 | 3253 | if (!callers && global.inlined_to) |
9c8305f8 JH |
3254 | { |
3255 | error ("inlined_to pointer is set but no predecessors found"); | |
3256 | error_found = true; | |
3257 | } | |
d52f5295 | 3258 | if (global.inlined_to == this) |
9c8305f8 JH |
3259 | { |
3260 | error ("inlined_to pointer refers to itself"); | |
3261 | error_found = true; | |
3262 | } | |
3263 | ||
d52f5295 | 3264 | if (clone_of) |
9c8305f8 | 3265 | { |
3dafb85c | 3266 | cgraph_node *n; |
d52f5295 ML |
3267 | for (n = clone_of->clones; n; n = n->next_sibling_clone) |
3268 | if (n == this) | |
9c8305f8 JH |
3269 | break; |
3270 | if (!n) | |
3271 | { | |
d52f5295 | 3272 | error ("cgraph_node has wrong clone_of"); |
9c8305f8 JH |
3273 | error_found = true; |
3274 | } | |
3275 | } | |
d52f5295 | 3276 | if (clones) |
9c8305f8 | 3277 | { |
3dafb85c | 3278 | cgraph_node *n; |
d52f5295 ML |
3279 | for (n = clones; n; n = n->next_sibling_clone) |
3280 | if (n->clone_of != this) | |
9c8305f8 JH |
3281 | break; |
3282 | if (n) | |
3283 | { | |
d52f5295 | 3284 | error ("cgraph_node has wrong clone list"); |
9c8305f8 JH |
3285 | error_found = true; |
3286 | } | |
3287 | } | |
d52f5295 | 3288 | if ((prev_sibling_clone || next_sibling_clone) && !clone_of) |
9c8305f8 | 3289 | { |
d52f5295 | 3290 | error ("cgraph_node is in clone list but it is not clone"); |
9c8305f8 JH |
3291 | error_found = true; |
3292 | } | |
d52f5295 | 3293 | if (!prev_sibling_clone && clone_of && clone_of->clones != this) |
9c8305f8 | 3294 | { |
d52f5295 | 3295 | error ("cgraph_node has wrong prev_clone pointer"); |
9c8305f8 JH |
3296 | error_found = true; |
3297 | } | |
d52f5295 | 3298 | if (prev_sibling_clone && prev_sibling_clone->next_sibling_clone != this) |
9c8305f8 JH |
3299 | { |
3300 | error ("double linked list of clones corrupted"); | |
3301 | error_found = true; | |
3302 | } | |
3303 | ||
d52f5295 | 3304 | if (analyzed && alias) |
9c8305f8 JH |
3305 | { |
3306 | bool ref_found = false; | |
3307 | int i; | |
3dafb85c | 3308 | ipa_ref *ref = NULL; |
9c8305f8 | 3309 | |
d52f5295 | 3310 | if (callees) |
9c8305f8 JH |
3311 | { |
3312 | error ("Alias has call edges"); | |
3313 | error_found = true; | |
3314 | } | |
d52f5295 | 3315 | for (i = 0; iterate_reference (i, ref); i++) |
d5e254e1 IE |
3316 | if (ref->use == IPA_REF_CHKP) |
3317 | ; | |
3318 | else if (ref->use != IPA_REF_ALIAS) | |
9c8305f8 JH |
3319 | { |
3320 | error ("Alias has non-alias reference"); | |
3321 | error_found = true; | |
3322 | } | |
3323 | else if (ref_found) | |
3324 | { | |
3325 | error ("Alias has more than one alias reference"); | |
3326 | error_found = true; | |
3327 | } | |
3328 | else | |
3329 | ref_found = true; | |
21c0a521 DM |
3330 | if (!ref_found) |
3331 | { | |
3332 | error ("Analyzed alias has no reference"); | |
3333 | error_found = true; | |
3334 | } | |
9c8305f8 | 3335 | } |
d5e254e1 IE |
3336 | |
3337 | /* Check instrumented version reference. */ | |
3338 | if (instrumented_version | |
3339 | && instrumented_version->instrumented_version != this) | |
3340 | { | |
3341 | error ("Instrumentation clone does not reference original node"); | |
3342 | error_found = true; | |
3343 | } | |
3344 | ||
3345 | /* Cannot have orig_decl for not instrumented nodes. */ | |
3346 | if (!instrumentation_clone && orig_decl) | |
3347 | { | |
3348 | error ("Not instrumented node has non-NULL original declaration"); | |
3349 | error_found = true; | |
3350 | } | |
3351 | ||
3352 | /* If original not instrumented node still exists then we may check | |
3353 | original declaration is set properly. */ | |
3354 | if (instrumented_version | |
3355 | && orig_decl | |
3356 | && orig_decl != instrumented_version->decl) | |
3357 | { | |
3358 | error ("Instrumented node has wrong original declaration"); | |
3359 | error_found = true; | |
3360 | } | |
3361 | ||
3362 | /* Check all nodes have chkp reference to their instrumented versions. */ | |
3363 | if (analyzed | |
3364 | && instrumented_version | |
3365 | && !instrumentation_clone) | |
3366 | { | |
3367 | bool ref_found = false; | |
3368 | int i; | |
3369 | struct ipa_ref *ref; | |
3370 | ||
3371 | for (i = 0; iterate_reference (i, ref); i++) | |
3372 | if (ref->use == IPA_REF_CHKP) | |
3373 | { | |
3374 | if (ref_found) | |
3375 | { | |
3376 | error ("Node has more than one chkp reference"); | |
3377 | error_found = true; | |
3378 | } | |
3379 | if (ref->referred != instrumented_version) | |
3380 | { | |
3381 | error ("Wrong node is referenced with chkp reference"); | |
3382 | error_found = true; | |
3383 | } | |
3384 | ref_found = true; | |
3385 | } | |
3386 | ||
3387 | if (!ref_found) | |
3388 | { | |
3389 | error ("Analyzed node has no reference to instrumented version"); | |
3390 | error_found = true; | |
3391 | } | |
3392 | } | |
3393 | ||
48de5d37 IE |
3394 | if (instrumentation_clone |
3395 | && DECL_BUILT_IN_CLASS (decl) == NOT_BUILT_IN) | |
3396 | { | |
3397 | tree name = DECL_ASSEMBLER_NAME (decl); | |
3398 | tree orig_name = DECL_ASSEMBLER_NAME (orig_decl); | |
3399 | ||
3400 | if (!IDENTIFIER_TRANSPARENT_ALIAS (name) | |
3401 | || TREE_CHAIN (name) != orig_name) | |
3402 | { | |
3403 | error ("Alias chain for instrumented node is broken"); | |
3404 | error_found = true; | |
3405 | } | |
3406 | } | |
3407 | ||
d52f5295 | 3408 | if (analyzed && thunk.thunk_p) |
9c8305f8 | 3409 | { |
d52f5295 | 3410 | if (!callees) |
9c8305f8 JH |
3411 | { |
3412 | error ("No edge out of thunk node"); | |
3413 | error_found = true; | |
3414 | } | |
d52f5295 | 3415 | else if (callees->next_callee) |
9c8305f8 JH |
3416 | { |
3417 | error ("More than one edge out of thunk node"); | |
3418 | error_found = true; | |
3419 | } | |
0b9004ed | 3420 | if (gimple_has_body_p (decl) && !global.inlined_to) |
9c8305f8 JH |
3421 | { |
3422 | error ("Thunk is not supposed to have body"); | |
3423 | error_found = true; | |
3424 | } | |
d5e254e1 IE |
3425 | if (thunk.add_pointer_bounds_args |
3426 | && !instrumented_version->semantically_equivalent_p (callees->callee)) | |
3427 | { | |
3428 | error ("Instrumentation thunk has wrong edge callee"); | |
3429 | error_found = true; | |
3430 | } | |
9c8305f8 | 3431 | } |
d52f5295 ML |
3432 | else if (analyzed && gimple_has_body_p (decl) |
3433 | && !TREE_ASM_WRITTEN (decl) | |
3434 | && (!DECL_EXTERNAL (decl) || global.inlined_to) | |
3435 | && !flag_wpa) | |
9c8305f8 JH |
3436 | { |
3437 | if (this_cfun->cfg) | |
3438 | { | |
355fe088 | 3439 | hash_set<gimple *> stmts; |
71cafea9 | 3440 | int i; |
3dafb85c | 3441 | ipa_ref *ref = NULL; |
71cafea9 | 3442 | |
9c8305f8 JH |
3443 | /* Reach the trees by walking over the CFG, and note the |
3444 | enclosing basic-blocks in the call edges. */ | |
3445 | FOR_EACH_BB_FN (this_block, this_cfun) | |
71cafea9 JH |
3446 | { |
3447 | for (gsi = gsi_start_phis (this_block); | |
3448 | !gsi_end_p (gsi); gsi_next (&gsi)) | |
6e2830c3 | 3449 | stmts.add (gsi_stmt (gsi)); |
71cafea9 JH |
3450 | for (gsi = gsi_start_bb (this_block); |
3451 | !gsi_end_p (gsi); | |
3452 | gsi_next (&gsi)) | |
3453 | { | |
355fe088 | 3454 | gimple *stmt = gsi_stmt (gsi); |
6e2830c3 | 3455 | stmts.add (stmt); |
71cafea9 JH |
3456 | if (is_gimple_call (stmt)) |
3457 | { | |
3dafb85c | 3458 | cgraph_edge *e = get_edge (stmt); |
71cafea9 JH |
3459 | tree decl = gimple_call_fndecl (stmt); |
3460 | if (e) | |
3461 | { | |
3462 | if (e->aux) | |
3463 | { | |
3464 | error ("shared call_stmt:"); | |
3465 | cgraph_debug_gimple_stmt (this_cfun, stmt); | |
3466 | error_found = true; | |
3467 | } | |
3468 | if (!e->indirect_unknown_callee) | |
3469 | { | |
90988f77 | 3470 | if (e->verify_corresponds_to_fndecl (decl)) |
71cafea9 JH |
3471 | { |
3472 | error ("edge points to wrong declaration:"); | |
67348ccc | 3473 | debug_tree (e->callee->decl); |
71cafea9 JH |
3474 | fprintf (stderr," Instead of:"); |
3475 | debug_tree (decl); | |
3476 | error_found = true; | |
3477 | } | |
3478 | } | |
3479 | else if (decl) | |
3480 | { | |
3481 | error ("an indirect edge with unknown callee " | |
3482 | "corresponding to a call_stmt with " | |
3483 | "a known declaration:"); | |
3484 | error_found = true; | |
3485 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); | |
3486 | } | |
3487 | e->aux = (void *)1; | |
3488 | } | |
3489 | else if (decl) | |
3490 | { | |
3491 | error ("missing callgraph edge for call stmt:"); | |
3492 | cgraph_debug_gimple_stmt (this_cfun, stmt); | |
3493 | error_found = true; | |
3494 | } | |
3495 | } | |
3496 | } | |
9c8305f8 | 3497 | } |
d52f5295 | 3498 | for (i = 0; iterate_reference (i, ref); i++) |
6e2830c3 | 3499 | if (ref->stmt && !stmts.contains (ref->stmt)) |
71cafea9 JH |
3500 | { |
3501 | error ("reference to dead statement"); | |
3502 | cgraph_debug_gimple_stmt (this_cfun, ref->stmt); | |
3503 | error_found = true; | |
3504 | } | |
9c8305f8 JH |
3505 | } |
3506 | else | |
3507 | /* No CFG available?! */ | |
3508 | gcc_unreachable (); | |
3509 | ||
d52f5295 | 3510 | for (e = callees; e; e = e->next_callee) |
9c8305f8 JH |
3511 | { |
3512 | if (!e->aux) | |
3513 | { | |
3514 | error ("edge %s->%s has no corresponding call_stmt", | |
fec39fa6 TS |
3515 | identifier_to_locale (e->caller->name ()), |
3516 | identifier_to_locale (e->callee->name ())); | |
9c8305f8 JH |
3517 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
3518 | error_found = true; | |
3519 | } | |
3520 | e->aux = 0; | |
3521 | } | |
d52f5295 | 3522 | for (e = indirect_calls; e; e = e->next_callee) |
9c8305f8 | 3523 | { |
042ae7d2 | 3524 | if (!e->aux && !e->speculative) |
9c8305f8 JH |
3525 | { |
3526 | error ("an indirect edge from %s has no corresponding call_stmt", | |
fec39fa6 | 3527 | identifier_to_locale (e->caller->name ())); |
9c8305f8 JH |
3528 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
3529 | error_found = true; | |
3530 | } | |
3531 | e->aux = 0; | |
3532 | } | |
3533 | } | |
3534 | if (error_found) | |
3535 | { | |
d52f5295 | 3536 | dump (stderr); |
9c8305f8 JH |
3537 | internal_error ("verify_cgraph_node failed"); |
3538 | } | |
3539 | timevar_pop (TV_CGRAPH_VERIFY); | |
3540 | } | |
3541 | ||
3542 | /* Verify whole cgraph structure. */ | |
3543 | DEBUG_FUNCTION void | |
d52f5295 | 3544 | cgraph_node::verify_cgraph_nodes (void) |
9c8305f8 | 3545 | { |
3dafb85c | 3546 | cgraph_node *node; |
9c8305f8 JH |
3547 | |
3548 | if (seen_error ()) | |
3549 | return; | |
3550 | ||
3551 | FOR_EACH_FUNCTION (node) | |
d52f5295 | 3552 | node->verify (); |
9c8305f8 | 3553 | } |
48f4a6fa | 3554 | |
d52f5295 | 3555 | /* Walk the alias chain to return the function cgraph_node is alias of. |
6cbde2e3 | 3556 | Walk through thunks, too. |
f13fe18b JH |
3557 | When AVAILABILITY is non-NULL, get minimal availability in the chain. |
3558 | When REF is non-NULL, assume that reference happens in symbol REF | |
3559 | when determining the availability. */ | |
e70670cf | 3560 | |
d52f5295 | 3561 | cgraph_node * |
f13fe18b JH |
3562 | cgraph_node::function_symbol (enum availability *availability, |
3563 | struct symtab_node *ref) | |
e70670cf | 3564 | { |
f13fe18b | 3565 | cgraph_node *node = ultimate_alias_target (availability, ref); |
d52f5295 | 3566 | |
6cbde2e3 | 3567 | while (node->thunk.thunk_p) |
e70670cf | 3568 | { |
f13fe18b | 3569 | ref = node; |
6cbde2e3 BE |
3570 | node = node->callees->callee; |
3571 | if (availability) | |
3572 | { | |
3573 | enum availability a; | |
f13fe18b | 3574 | a = node->get_availability (ref); |
6cbde2e3 BE |
3575 | if (a < *availability) |
3576 | *availability = a; | |
3577 | } | |
f13fe18b | 3578 | node = node->ultimate_alias_target (availability, ref); |
6cbde2e3 BE |
3579 | } |
3580 | return node; | |
3581 | } | |
3582 | ||
3583 | /* Walk the alias chain to return the function cgraph_node is alias of. | |
3584 | Walk through non virtual thunks, too. Thus we return either a function | |
3585 | or a virtual thunk node. | |
f13fe18b JH |
3586 | When AVAILABILITY is non-NULL, get minimal availability in the chain. |
3587 | When REF is non-NULL, assume that reference happens in symbol REF | |
3588 | when determining the availability. */ | |
6cbde2e3 BE |
3589 | |
3590 | cgraph_node * | |
3591 | cgraph_node::function_or_virtual_thunk_symbol | |
f13fe18b JH |
3592 | (enum availability *availability, |
3593 | struct symtab_node *ref) | |
6cbde2e3 | 3594 | { |
f13fe18b | 3595 | cgraph_node *node = ultimate_alias_target (availability, ref); |
6cbde2e3 BE |
3596 | |
3597 | while (node->thunk.thunk_p && !node->thunk.virtual_offset_p) | |
3598 | { | |
f13fe18b | 3599 | ref = node; |
6cbde2e3 BE |
3600 | node = node->callees->callee; |
3601 | if (availability) | |
e70670cf | 3602 | { |
6cbde2e3 | 3603 | enum availability a; |
f13fe18b | 3604 | a = node->get_availability (ref); |
6cbde2e3 BE |
3605 | if (a < *availability) |
3606 | *availability = a; | |
e70670cf | 3607 | } |
f13fe18b | 3608 | node = node->ultimate_alias_target (availability, ref); |
6cbde2e3 | 3609 | } |
e70670cf JH |
3610 | return node; |
3611 | } | |
3612 | ||
d52f5295 ML |
3613 | /* When doing LTO, read cgraph_node's body from disk if it is not already |
3614 | present. */ | |
a2e2a668 JH |
3615 | |
3616 | bool | |
70486010 | 3617 | cgraph_node::get_untransformed_body (void) |
a2e2a668 | 3618 | { |
3dafb85c | 3619 | lto_file_decl_data *file_data; |
a2e2a668 JH |
3620 | const char *data, *name; |
3621 | size_t len; | |
d52f5295 | 3622 | tree decl = this->decl; |
a2e2a668 | 3623 | |
e9191ad3 JH |
3624 | /* Check if body is already there. Either we have gimple body or |
3625 | the function is thunk and in that case we set DECL_ARGUMENTS. */ | |
3626 | if (DECL_ARGUMENTS (decl) || gimple_has_body_p (decl)) | |
a2e2a668 JH |
3627 | return false; |
3628 | ||
e9191ad3 | 3629 | gcc_assert (in_lto_p && !DECL_RESULT (decl)); |
a2e2a668 | 3630 | |
917dd9bf JH |
3631 | timevar_push (TV_IPA_LTO_GIMPLE_IN); |
3632 | ||
d52f5295 | 3633 | file_data = lto_file_data; |
a2e2a668 JH |
3634 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
3635 | ||
3636 | /* We may have renamed the declaration, e.g., a static function. */ | |
3637 | name = lto_get_decl_name_mapping (file_data, name); | |
ca834876 JH |
3638 | struct lto_in_decl_state *decl_state |
3639 | = lto_get_function_in_decl_state (file_data, decl); | |
a2e2a668 JH |
3640 | |
3641 | data = lto_get_section_data (file_data, LTO_section_function_body, | |
ca834876 | 3642 | name, &len, decl_state->compressed); |
a2e2a668 | 3643 | if (!data) |
40fecdd6 | 3644 | fatal_error (input_location, "%s: section %s is missing", |
a2e2a668 JH |
3645 | file_data->file_name, |
3646 | name); | |
a2e2a668 JH |
3647 | |
3648 | gcc_assert (DECL_STRUCT_FUNCTION (decl) == NULL); | |
3649 | ||
d52f5295 | 3650 | lto_input_function_body (file_data, this, data); |
a2e2a668 JH |
3651 | lto_stats.num_function_bodies++; |
3652 | lto_free_section_data (file_data, LTO_section_function_body, name, | |
ca834876 | 3653 | data, len, decl_state->compressed); |
d52f5295 | 3654 | lto_free_function_in_decl_state_for_node (this); |
1c4db829 JH |
3655 | /* Keep lto file data so ipa-inline-analysis knows about cross module |
3656 | inlining. */ | |
917dd9bf JH |
3657 | |
3658 | timevar_pop (TV_IPA_LTO_GIMPLE_IN); | |
3659 | ||
a2e2a668 JH |
3660 | return true; |
3661 | } | |
3662 | ||
70486010 JH |
3663 | /* Prepare function body. When doing LTO, read cgraph_node's body from disk |
3664 | if it is not already present. When some IPA transformations are scheduled, | |
3665 | apply them. */ | |
3666 | ||
3667 | bool | |
3668 | cgraph_node::get_body (void) | |
3669 | { | |
3670 | bool updated; | |
3671 | ||
3672 | updated = get_untransformed_body (); | |
3673 | ||
3674 | /* Getting transformed body makes no sense for inline clones; | |
56aae4b7 | 3675 | we should never use this on real clones because they are materialized |
70486010 JH |
3676 | early. |
3677 | TODO: Materializing clones here will likely lead to smaller LTRANS | |
3678 | footprint. */ | |
3679 | gcc_assert (!global.inlined_to && !clone_of); | |
3680 | if (ipa_transforms_to_apply.exists ()) | |
3681 | { | |
3682 | opt_pass *saved_current_pass = current_pass; | |
3683 | FILE *saved_dump_file = dump_file; | |
5a15be97 | 3684 | const char *saved_dump_file_name = dump_file_name; |
1a817418 | 3685 | dump_flags_t saved_dump_flags = dump_flags; |
5a15be97 | 3686 | dump_file_name = NULL; |
fa22501a | 3687 | dump_file = NULL; |
70486010 JH |
3688 | |
3689 | push_cfun (DECL_STRUCT_FUNCTION (decl)); | |
3690 | execute_all_ipa_transforms (); | |
3691 | cgraph_edge::rebuild_edges (); | |
3692 | free_dominance_info (CDI_DOMINATORS); | |
3693 | free_dominance_info (CDI_POST_DOMINATORS); | |
3694 | pop_cfun (); | |
3695 | updated = true; | |
3696 | ||
3697 | current_pass = saved_current_pass; | |
3698 | dump_file = saved_dump_file; | |
5a15be97 | 3699 | dump_file_name = saved_dump_file_name; |
70486010 JH |
3700 | dump_flags = saved_dump_flags; |
3701 | } | |
3702 | return updated; | |
3703 | } | |
3704 | ||
8ccda8bc EB |
3705 | /* Return the DECL_STRUCT_FUNCTION of the function. */ |
3706 | ||
3707 | struct function * | |
3708 | cgraph_node::get_fun (void) | |
3709 | { | |
3710 | cgraph_node *node = this; | |
3711 | struct function *fun = DECL_STRUCT_FUNCTION (node->decl); | |
3712 | ||
3713 | while (!fun && node->clone_of) | |
3714 | { | |
3715 | node = node->clone_of; | |
3716 | fun = DECL_STRUCT_FUNCTION (node->decl); | |
3717 | } | |
3718 | ||
3719 | return fun; | |
3720 | } | |
3721 | ||
4484a35a AM |
3722 | /* Verify if the type of the argument matches that of the function |
3723 | declaration. If we cannot verify this or there is a mismatch, | |
3724 | return false. */ | |
3725 | ||
3726 | static bool | |
355fe088 | 3727 | gimple_check_call_args (gimple *stmt, tree fndecl, bool args_count_match) |
4484a35a AM |
3728 | { |
3729 | tree parms, p; | |
3730 | unsigned int i, nargs; | |
3731 | ||
3732 | /* Calls to internal functions always match their signature. */ | |
3733 | if (gimple_call_internal_p (stmt)) | |
3734 | return true; | |
3735 | ||
3736 | nargs = gimple_call_num_args (stmt); | |
3737 | ||
3738 | /* Get argument types for verification. */ | |
3739 | if (fndecl) | |
3740 | parms = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); | |
3741 | else | |
3742 | parms = TYPE_ARG_TYPES (gimple_call_fntype (stmt)); | |
3743 | ||
3744 | /* Verify if the type of the argument matches that of the function | |
3745 | declaration. If we cannot verify this or there is a mismatch, | |
3746 | return false. */ | |
3747 | if (fndecl && DECL_ARGUMENTS (fndecl)) | |
3748 | { | |
3749 | for (i = 0, p = DECL_ARGUMENTS (fndecl); | |
3750 | i < nargs; | |
3751 | i++, p = DECL_CHAIN (p)) | |
3752 | { | |
3753 | tree arg; | |
3754 | /* We cannot distinguish a varargs function from the case | |
3755 | of excess parameters, still deferring the inlining decision | |
3756 | to the callee is possible. */ | |
3757 | if (!p) | |
3758 | break; | |
3759 | arg = gimple_call_arg (stmt, i); | |
3760 | if (p == error_mark_node | |
5147d10a | 3761 | || DECL_ARG_TYPE (p) == error_mark_node |
4484a35a AM |
3762 | || arg == error_mark_node |
3763 | || (!types_compatible_p (DECL_ARG_TYPE (p), TREE_TYPE (arg)) | |
3764 | && !fold_convertible_p (DECL_ARG_TYPE (p), arg))) | |
3765 | return false; | |
3766 | } | |
3767 | if (args_count_match && p) | |
3768 | return false; | |
3769 | } | |
3770 | else if (parms) | |
3771 | { | |
3772 | for (i = 0, p = parms; i < nargs; i++, p = TREE_CHAIN (p)) | |
3773 | { | |
3774 | tree arg; | |
3775 | /* If this is a varargs function defer inlining decision | |
3776 | to callee. */ | |
3777 | if (!p) | |
3778 | break; | |
3779 | arg = gimple_call_arg (stmt, i); | |
3780 | if (TREE_VALUE (p) == error_mark_node | |
3781 | || arg == error_mark_node | |
3782 | || TREE_CODE (TREE_VALUE (p)) == VOID_TYPE | |
3783 | || (!types_compatible_p (TREE_VALUE (p), TREE_TYPE (arg)) | |
3784 | && !fold_convertible_p (TREE_VALUE (p), arg))) | |
3785 | return false; | |
3786 | } | |
3787 | } | |
3788 | else | |
3789 | { | |
3790 | if (nargs != 0) | |
3791 | return false; | |
3792 | } | |
3793 | return true; | |
3794 | } | |
3795 | ||
3796 | /* Verify if the type of the argument and lhs of CALL_STMT matches | |
3797 | that of the function declaration CALLEE. If ARGS_COUNT_MATCH is | |
3798 | true, the arg count needs to be the same. | |
3799 | If we cannot verify this or there is a mismatch, return false. */ | |
3800 | ||
3801 | bool | |
355fe088 | 3802 | gimple_check_call_matching_types (gimple *call_stmt, tree callee, |
4484a35a AM |
3803 | bool args_count_match) |
3804 | { | |
3805 | tree lhs; | |
3806 | ||
3807 | if ((DECL_RESULT (callee) | |
3808 | && !DECL_BY_REFERENCE (DECL_RESULT (callee)) | |
3809 | && (lhs = gimple_call_lhs (call_stmt)) != NULL_TREE | |
3810 | && !useless_type_conversion_p (TREE_TYPE (DECL_RESULT (callee)), | |
3811 | TREE_TYPE (lhs)) | |
3812 | && !fold_convertible_p (TREE_TYPE (DECL_RESULT (callee)), lhs)) | |
3813 | || !gimple_check_call_args (call_stmt, callee, args_count_match)) | |
3814 | return false; | |
3815 | return true; | |
3816 | } | |
3817 | ||
3edf64aa DM |
3818 | /* Reset all state within cgraph.c so that we can rerun the compiler |
3819 | within the same process. For use by toplev::finalize. */ | |
3820 | ||
3821 | void | |
3822 | cgraph_c_finalize (void) | |
3823 | { | |
3824 | symtab = NULL; | |
3825 | ||
3826 | x_cgraph_nodes_queue = NULL; | |
3827 | ||
3828 | cgraph_fnver_htab = NULL; | |
3829 | version_info_node = NULL; | |
3830 | } | |
3831 | ||
31de7606 JH |
3832 | /* A wroker for call_for_symbol_and_aliases. */ |
3833 | ||
3834 | bool | |
3835 | cgraph_node::call_for_symbol_and_aliases_1 (bool (*callback) (cgraph_node *, | |
3836 | void *), | |
3837 | void *data, | |
3838 | bool include_overwritable) | |
3839 | { | |
3840 | ipa_ref *ref; | |
3841 | FOR_EACH_ALIAS (this, ref) | |
3842 | { | |
3843 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
3844 | if (include_overwritable | |
3845 | || alias->get_availability () > AVAIL_INTERPOSABLE) | |
3846 | if (alias->call_for_symbol_and_aliases (callback, data, | |
3847 | include_overwritable)) | |
3848 | return true; | |
3849 | } | |
3850 | return false; | |
3851 | } | |
17d1bf76 ML |
3852 | |
3853 | /* Return true if NODE has thunk. */ | |
3854 | ||
3855 | bool | |
3856 | cgraph_node::has_thunk_p (cgraph_node *node, void *) | |
3857 | { | |
3858 | for (cgraph_edge *e = node->callers; e; e = e->next_caller) | |
3859 | if (e->caller->thunk.thunk_p) | |
3860 | return true; | |
3861 | return false; | |
3862 | } | |
3863 | ||
988d1653 | 3864 | #include "gt-cgraph.h" |