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e72fcfe8 | 1 | /* Callgraph handling code. |
818ab71a | 2 | Copyright (C) 2003-2016 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 | |
9c8305f8 JH |
23 | The call-graph is a data structure designed for intra-procedural optimization. |
24 | It represents a multi-graph where nodes are functions and edges are call sites. */ | |
18c6ada9 | 25 | |
e72fcfe8 JH |
26 | #include "config.h" |
27 | #include "system.h" | |
28 | #include "coretypes.h" | |
c7131fb2 | 29 | #include "backend.h" |
957060b5 AM |
30 | #include "target.h" |
31 | #include "rtl.h" | |
e72fcfe8 | 32 | #include "tree.h" |
c7131fb2 | 33 | #include "gimple.h" |
957060b5 AM |
34 | #include "predict.h" |
35 | #include "alloc-pool.h" | |
957060b5 | 36 | #include "gimple-ssa.h" |
957060b5 AM |
37 | #include "cgraph.h" |
38 | #include "lto-streamer.h" | |
40e23961 | 39 | #include "fold-const.h" |
d8a2d370 DN |
40 | #include "varasm.h" |
41 | #include "calls.h" | |
42 | #include "print-tree.h" | |
e72fcfe8 | 43 | #include "langhooks.h" |
dc0bfe6a | 44 | #include "intl.h" |
2fb9a547 | 45 | #include "tree-eh.h" |
5be5c238 | 46 | #include "gimple-iterator.h" |
442b4905 | 47 | #include "tree-cfg.h" |
7a300452 | 48 | #include "tree-ssa.h" |
a63f2942 | 49 | #include "value-prof.h" |
a940b4d9 | 50 | #include "ipa-utils.h" |
dd912cb8 | 51 | #include "symbol-summary.h" |
c582198b | 52 | #include "ipa-prop.h" |
e7f23018 | 53 | #include "ipa-inline.h" |
7d776ee2 | 54 | #include "cfgloop.h" |
9c8305f8 | 55 | #include "gimple-pretty-print.h" |
23a04216 | 56 | #include "tree-dfa.h" |
893479de AM |
57 | #include "profile.h" |
58 | #include "params.h" | |
d5e254e1 | 59 | #include "tree-chkp.h" |
2631d4eb | 60 | #include "context.h" |
a49de7a4 | 61 | #include "gimplify.h" |
988d1653 | 62 | |
7ee2468b SB |
63 | /* FIXME: Only for PROP_loops, but cgraph shouldn't have to know about this. */ |
64 | #include "tree-pass.h" | |
65 | ||
1668aabc | 66 | /* Queue of cgraph nodes scheduled to be lowered. */ |
5e20cdc9 | 67 | symtab_node *x_cgraph_nodes_queue; |
3dafb85c | 68 | #define cgraph_nodes_queue ((cgraph_node *)x_cgraph_nodes_queue) |
f45e0ad1 | 69 | |
3dafb85c ML |
70 | /* Symbol table global context. */ |
71 | symbol_table *symtab; | |
cd9c7bd2 | 72 | |
61502ca8 | 73 | /* List of hooks triggered on cgraph_edge events. */ |
9088c1cc MJ |
74 | struct cgraph_edge_hook_list { |
75 | cgraph_edge_hook hook; | |
76 | void *data; | |
77 | struct cgraph_edge_hook_list *next; | |
78 | }; | |
79 | ||
61502ca8 | 80 | /* List of hooks triggered on cgraph_node events. */ |
9088c1cc MJ |
81 | struct cgraph_node_hook_list { |
82 | cgraph_node_hook hook; | |
83 | void *data; | |
84 | struct cgraph_node_hook_list *next; | |
85 | }; | |
86 | ||
61502ca8 | 87 | /* List of hooks triggered on events involving two cgraph_edges. */ |
9088c1cc MJ |
88 | struct cgraph_2edge_hook_list { |
89 | cgraph_2edge_hook hook; | |
90 | void *data; | |
91 | struct cgraph_2edge_hook_list *next; | |
92 | }; | |
93 | ||
61502ca8 | 94 | /* List of hooks triggered on events involving two cgraph_nodes. */ |
9088c1cc MJ |
95 | struct cgraph_2node_hook_list { |
96 | cgraph_2node_hook hook; | |
97 | void *data; | |
98 | struct cgraph_2node_hook_list *next; | |
99 | }; | |
100 | ||
2a22f99c TS |
101 | /* Hash descriptor for cgraph_function_version_info. */ |
102 | ||
ca752f39 | 103 | struct function_version_hasher : ggc_ptr_hash<cgraph_function_version_info> |
2a22f99c TS |
104 | { |
105 | static hashval_t hash (cgraph_function_version_info *); | |
106 | static bool equal (cgraph_function_version_info *, | |
107 | cgraph_function_version_info *); | |
108 | }; | |
109 | ||
3649b9b7 ST |
110 | /* Map a cgraph_node to cgraph_function_version_info using this htab. |
111 | The cgraph_function_version_info has a THIS_NODE field that is the | |
112 | corresponding cgraph_node.. */ | |
113 | ||
2a22f99c | 114 | static GTY(()) hash_table<function_version_hasher> *cgraph_fnver_htab = NULL; |
3649b9b7 ST |
115 | |
116 | /* Hash function for cgraph_fnver_htab. */ | |
2a22f99c TS |
117 | hashval_t |
118 | function_version_hasher::hash (cgraph_function_version_info *ptr) | |
3649b9b7 | 119 | { |
2a22f99c | 120 | int uid = ptr->this_node->uid; |
3649b9b7 ST |
121 | return (hashval_t)(uid); |
122 | } | |
123 | ||
124 | /* eq function for cgraph_fnver_htab. */ | |
2a22f99c TS |
125 | bool |
126 | function_version_hasher::equal (cgraph_function_version_info *n1, | |
127 | cgraph_function_version_info *n2) | |
3649b9b7 | 128 | { |
3649b9b7 ST |
129 | return n1->this_node->uid == n2->this_node->uid; |
130 | } | |
131 | ||
132 | /* Mark as GC root all allocated nodes. */ | |
133 | static GTY(()) struct cgraph_function_version_info * | |
134 | version_info_node = NULL; | |
135 | ||
f0889939 AM |
136 | /* Return true if NODE's address can be compared. */ |
137 | ||
138 | bool | |
139 | symtab_node::address_can_be_compared_p () | |
140 | { | |
141 | /* Address of virtual tables and functions is never compared. */ | |
142 | if (DECL_VIRTUAL_P (decl)) | |
143 | return false; | |
144 | /* Address of C++ cdtors is never compared. */ | |
145 | if (is_a <cgraph_node *> (this) | |
146 | && (DECL_CXX_CONSTRUCTOR_P (decl) | |
147 | || DECL_CXX_DESTRUCTOR_P (decl))) | |
148 | return false; | |
149 | /* Constant pool symbols addresses are never compared. | |
150 | flag_merge_constants permits us to assume the same on readonly vars. */ | |
151 | if (is_a <varpool_node *> (this) | |
152 | && (DECL_IN_CONSTANT_POOL (decl) | |
153 | || (flag_merge_constants >= 2 | |
154 | && TREE_READONLY (decl) && !TREE_THIS_VOLATILE (decl)))) | |
155 | return false; | |
156 | return true; | |
157 | } | |
158 | ||
3649b9b7 | 159 | /* Get the cgraph_function_version_info node corresponding to node. */ |
3dafb85c | 160 | cgraph_function_version_info * |
d52f5295 | 161 | cgraph_node::function_version (void) |
3649b9b7 | 162 | { |
3dafb85c | 163 | cgraph_function_version_info key; |
d52f5295 | 164 | key.this_node = this; |
3649b9b7 ST |
165 | |
166 | if (cgraph_fnver_htab == NULL) | |
167 | return NULL; | |
168 | ||
2a22f99c | 169 | return cgraph_fnver_htab->find (&key); |
3649b9b7 ST |
170 | } |
171 | ||
172 | /* Insert a new cgraph_function_version_info node into cgraph_fnver_htab | |
173 | corresponding to cgraph_node NODE. */ | |
3dafb85c | 174 | cgraph_function_version_info * |
d52f5295 | 175 | cgraph_node::insert_new_function_version (void) |
3649b9b7 | 176 | { |
3649b9b7 | 177 | version_info_node = NULL; |
766090c2 | 178 | version_info_node = ggc_cleared_alloc<cgraph_function_version_info> (); |
d52f5295 | 179 | version_info_node->this_node = this; |
3649b9b7 ST |
180 | |
181 | if (cgraph_fnver_htab == NULL) | |
2a22f99c | 182 | cgraph_fnver_htab = hash_table<function_version_hasher>::create_ggc (2); |
3649b9b7 | 183 | |
2a22f99c TS |
184 | *cgraph_fnver_htab->find_slot (version_info_node, INSERT) |
185 | = version_info_node; | |
3649b9b7 ST |
186 | return version_info_node; |
187 | } | |
188 | ||
189 | /* Remove the cgraph_function_version_info and cgraph_node for DECL. This | |
190 | DECL is a duplicate declaration. */ | |
191 | void | |
d52f5295 | 192 | cgraph_node::delete_function_version (tree decl) |
3649b9b7 | 193 | { |
3dafb85c ML |
194 | cgraph_node *decl_node = cgraph_node::get (decl); |
195 | cgraph_function_version_info *decl_v = NULL; | |
3649b9b7 ST |
196 | |
197 | if (decl_node == NULL) | |
198 | return; | |
199 | ||
d52f5295 | 200 | decl_v = decl_node->function_version (); |
3649b9b7 ST |
201 | |
202 | if (decl_v == NULL) | |
203 | return; | |
204 | ||
205 | if (decl_v->prev != NULL) | |
206 | decl_v->prev->next = decl_v->next; | |
207 | ||
208 | if (decl_v->next != NULL) | |
209 | decl_v->next->prev = decl_v->prev; | |
210 | ||
211 | if (cgraph_fnver_htab != NULL) | |
2a22f99c | 212 | cgraph_fnver_htab->remove_elt (decl_v); |
3649b9b7 | 213 | |
d52f5295 | 214 | decl_node->remove (); |
3649b9b7 ST |
215 | } |
216 | ||
217 | /* Record that DECL1 and DECL2 are semantically identical function | |
218 | versions. */ | |
219 | void | |
d52f5295 | 220 | cgraph_node::record_function_versions (tree decl1, tree decl2) |
3649b9b7 | 221 | { |
3dafb85c ML |
222 | cgraph_node *decl1_node = cgraph_node::get_create (decl1); |
223 | cgraph_node *decl2_node = cgraph_node::get_create (decl2); | |
224 | cgraph_function_version_info *decl1_v = NULL; | |
225 | cgraph_function_version_info *decl2_v = NULL; | |
226 | cgraph_function_version_info *before; | |
227 | cgraph_function_version_info *after; | |
3649b9b7 ST |
228 | |
229 | gcc_assert (decl1_node != NULL && decl2_node != NULL); | |
d52f5295 ML |
230 | decl1_v = decl1_node->function_version (); |
231 | decl2_v = decl2_node->function_version (); | |
3649b9b7 ST |
232 | |
233 | if (decl1_v != NULL && decl2_v != NULL) | |
234 | return; | |
235 | ||
236 | if (decl1_v == NULL) | |
d52f5295 | 237 | decl1_v = decl1_node->insert_new_function_version (); |
3649b9b7 ST |
238 | |
239 | if (decl2_v == NULL) | |
d52f5295 | 240 | decl2_v = decl2_node->insert_new_function_version (); |
3649b9b7 ST |
241 | |
242 | /* Chain decl2_v and decl1_v. All semantically identical versions | |
243 | will be chained together. */ | |
244 | ||
245 | before = decl1_v; | |
246 | after = decl2_v; | |
247 | ||
248 | while (before->next != NULL) | |
249 | before = before->next; | |
250 | ||
251 | while (after->prev != NULL) | |
252 | after= after->prev; | |
253 | ||
254 | before->next = after; | |
255 | after->prev = before; | |
256 | } | |
257 | ||
c582198b AM |
258 | /* Initialize callgraph dump file. */ |
259 | ||
260 | void | |
261 | symbol_table::initialize (void) | |
262 | { | |
263 | if (!dump_file) | |
264 | dump_file = dump_begin (TDI_cgraph, NULL); | |
265 | } | |
266 | ||
60393bbc AM |
267 | /* Allocate new callgraph node and insert it into basic data structures. */ |
268 | ||
269 | cgraph_node * | |
270 | symbol_table::create_empty (void) | |
271 | { | |
272 | cgraph_node *node = allocate_cgraph_symbol (); | |
273 | ||
274 | node->type = SYMTAB_FUNCTION; | |
275 | node->frequency = NODE_FREQUENCY_NORMAL; | |
276 | node->count_materialization_scale = REG_BR_PROB_BASE; | |
277 | cgraph_count++; | |
278 | ||
279 | return node; | |
280 | } | |
281 | ||
9088c1cc | 282 | /* Register HOOK to be called with DATA on each removed edge. */ |
3dafb85c ML |
283 | cgraph_edge_hook_list * |
284 | symbol_table::add_edge_removal_hook (cgraph_edge_hook hook, void *data) | |
9088c1cc | 285 | { |
3dafb85c ML |
286 | cgraph_edge_hook_list *entry; |
287 | cgraph_edge_hook_list **ptr = &m_first_edge_removal_hook; | |
9088c1cc | 288 | |
3dafb85c | 289 | entry = (cgraph_edge_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
290 | entry->hook = hook; |
291 | entry->data = data; | |
292 | entry->next = NULL; | |
293 | while (*ptr) | |
294 | ptr = &(*ptr)->next; | |
295 | *ptr = entry; | |
296 | return entry; | |
297 | } | |
298 | ||
299 | /* Remove ENTRY from the list of hooks called on removing edges. */ | |
300 | void | |
3dafb85c | 301 | symbol_table::remove_edge_removal_hook (cgraph_edge_hook_list *entry) |
9088c1cc | 302 | { |
3dafb85c | 303 | cgraph_edge_hook_list **ptr = &m_first_edge_removal_hook; |
9088c1cc MJ |
304 | |
305 | while (*ptr != entry) | |
306 | ptr = &(*ptr)->next; | |
307 | *ptr = entry->next; | |
934cb78a | 308 | free (entry); |
9088c1cc MJ |
309 | } |
310 | ||
311 | /* Call all edge removal hooks. */ | |
3dafb85c ML |
312 | void |
313 | symbol_table::call_edge_removal_hooks (cgraph_edge *e) | |
9088c1cc | 314 | { |
3dafb85c | 315 | cgraph_edge_hook_list *entry = m_first_edge_removal_hook; |
9088c1cc MJ |
316 | while (entry) |
317 | { | |
318 | entry->hook (e, entry->data); | |
319 | entry = entry->next; | |
320 | } | |
321 | } | |
322 | ||
323 | /* Register HOOK to be called with DATA on each removed node. */ | |
3dafb85c ML |
324 | cgraph_node_hook_list * |
325 | symbol_table::add_cgraph_removal_hook (cgraph_node_hook hook, void *data) | |
9088c1cc | 326 | { |
3dafb85c ML |
327 | cgraph_node_hook_list *entry; |
328 | cgraph_node_hook_list **ptr = &m_first_cgraph_removal_hook; | |
9088c1cc | 329 | |
3dafb85c | 330 | entry = (cgraph_node_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
331 | entry->hook = hook; |
332 | entry->data = data; | |
333 | entry->next = NULL; | |
334 | while (*ptr) | |
335 | ptr = &(*ptr)->next; | |
336 | *ptr = entry; | |
337 | return entry; | |
338 | } | |
339 | ||
340 | /* Remove ENTRY from the list of hooks called on removing nodes. */ | |
341 | void | |
3dafb85c | 342 | symbol_table::remove_cgraph_removal_hook (cgraph_node_hook_list *entry) |
9088c1cc | 343 | { |
3dafb85c | 344 | cgraph_node_hook_list **ptr = &m_first_cgraph_removal_hook; |
9088c1cc MJ |
345 | |
346 | while (*ptr != entry) | |
347 | ptr = &(*ptr)->next; | |
348 | *ptr = entry->next; | |
934cb78a | 349 | free (entry); |
9088c1cc MJ |
350 | } |
351 | ||
352 | /* Call all node removal hooks. */ | |
3dafb85c ML |
353 | void |
354 | symbol_table::call_cgraph_removal_hooks (cgraph_node *node) | |
9088c1cc | 355 | { |
3dafb85c | 356 | cgraph_node_hook_list *entry = m_first_cgraph_removal_hook; |
9088c1cc MJ |
357 | while (entry) |
358 | { | |
359 | entry->hook (node, entry->data); | |
360 | entry = entry->next; | |
361 | } | |
362 | } | |
363 | ||
3dafb85c ML |
364 | /* Call all node removal hooks. */ |
365 | void | |
366 | symbol_table::call_cgraph_insertion_hooks (cgraph_node *node) | |
367 | { | |
368 | cgraph_node_hook_list *entry = m_first_cgraph_insertion_hook; | |
369 | while (entry) | |
370 | { | |
371 | entry->hook (node, entry->data); | |
372 | entry = entry->next; | |
373 | } | |
374 | } | |
375 | ||
376 | ||
6544865a | 377 | /* Register HOOK to be called with DATA on each inserted node. */ |
3dafb85c ML |
378 | cgraph_node_hook_list * |
379 | symbol_table::add_cgraph_insertion_hook (cgraph_node_hook hook, void *data) | |
129a37fc | 380 | { |
3dafb85c ML |
381 | cgraph_node_hook_list *entry; |
382 | cgraph_node_hook_list **ptr = &m_first_cgraph_insertion_hook; | |
129a37fc | 383 | |
3dafb85c | 384 | entry = (cgraph_node_hook_list *) xmalloc (sizeof (*entry)); |
129a37fc JH |
385 | entry->hook = hook; |
386 | entry->data = data; | |
387 | entry->next = NULL; | |
388 | while (*ptr) | |
389 | ptr = &(*ptr)->next; | |
390 | *ptr = entry; | |
391 | return entry; | |
392 | } | |
393 | ||
6544865a | 394 | /* Remove ENTRY from the list of hooks called on inserted nodes. */ |
129a37fc | 395 | void |
3dafb85c | 396 | symbol_table::remove_cgraph_insertion_hook (cgraph_node_hook_list *entry) |
129a37fc | 397 | { |
3dafb85c | 398 | cgraph_node_hook_list **ptr = &m_first_cgraph_insertion_hook; |
129a37fc JH |
399 | |
400 | while (*ptr != entry) | |
401 | ptr = &(*ptr)->next; | |
402 | *ptr = entry->next; | |
934cb78a | 403 | free (entry); |
129a37fc JH |
404 | } |
405 | ||
9088c1cc | 406 | /* Register HOOK to be called with DATA on each duplicated edge. */ |
3dafb85c ML |
407 | cgraph_2edge_hook_list * |
408 | symbol_table::add_edge_duplication_hook (cgraph_2edge_hook hook, void *data) | |
9088c1cc | 409 | { |
3dafb85c ML |
410 | cgraph_2edge_hook_list *entry; |
411 | cgraph_2edge_hook_list **ptr = &m_first_edge_duplicated_hook; | |
9088c1cc | 412 | |
3dafb85c | 413 | entry = (cgraph_2edge_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
414 | entry->hook = hook; |
415 | entry->data = data; | |
416 | entry->next = NULL; | |
417 | while (*ptr) | |
418 | ptr = &(*ptr)->next; | |
419 | *ptr = entry; | |
420 | return entry; | |
421 | } | |
422 | ||
423 | /* Remove ENTRY from the list of hooks called on duplicating edges. */ | |
424 | void | |
3dafb85c | 425 | symbol_table::remove_edge_duplication_hook (cgraph_2edge_hook_list *entry) |
9088c1cc | 426 | { |
3dafb85c | 427 | cgraph_2edge_hook_list **ptr = &m_first_edge_duplicated_hook; |
9088c1cc MJ |
428 | |
429 | while (*ptr != entry) | |
430 | ptr = &(*ptr)->next; | |
431 | *ptr = entry->next; | |
934cb78a | 432 | free (entry); |
9088c1cc MJ |
433 | } |
434 | ||
435 | /* Call all edge duplication hooks. */ | |
66a20fc2 | 436 | void |
3dafb85c | 437 | symbol_table::call_edge_duplication_hooks (cgraph_edge *cs1, cgraph_edge *cs2) |
9088c1cc | 438 | { |
3dafb85c | 439 | cgraph_2edge_hook_list *entry = m_first_edge_duplicated_hook; |
9088c1cc MJ |
440 | while (entry) |
441 | { | |
442 | entry->hook (cs1, cs2, entry->data); | |
443 | entry = entry->next; | |
444 | } | |
445 | } | |
446 | ||
447 | /* Register HOOK to be called with DATA on each duplicated node. */ | |
3dafb85c ML |
448 | cgraph_2node_hook_list * |
449 | symbol_table::add_cgraph_duplication_hook (cgraph_2node_hook hook, void *data) | |
9088c1cc | 450 | { |
3dafb85c ML |
451 | cgraph_2node_hook_list *entry; |
452 | cgraph_2node_hook_list **ptr = &m_first_cgraph_duplicated_hook; | |
9088c1cc | 453 | |
3dafb85c | 454 | entry = (cgraph_2node_hook_list *) xmalloc (sizeof (*entry)); |
9088c1cc MJ |
455 | entry->hook = hook; |
456 | entry->data = data; | |
457 | entry->next = NULL; | |
458 | while (*ptr) | |
459 | ptr = &(*ptr)->next; | |
460 | *ptr = entry; | |
461 | return entry; | |
462 | } | |
463 | ||
464 | /* Remove ENTRY from the list of hooks called on duplicating nodes. */ | |
465 | void | |
3dafb85c | 466 | symbol_table::remove_cgraph_duplication_hook (cgraph_2node_hook_list *entry) |
9088c1cc | 467 | { |
3dafb85c | 468 | cgraph_2node_hook_list **ptr = &m_first_cgraph_duplicated_hook; |
9088c1cc MJ |
469 | |
470 | while (*ptr != entry) | |
471 | ptr = &(*ptr)->next; | |
472 | *ptr = entry->next; | |
934cb78a | 473 | free (entry); |
9088c1cc MJ |
474 | } |
475 | ||
476 | /* Call all node duplication hooks. */ | |
b0d0a291 | 477 | void |
3dafb85c ML |
478 | symbol_table::call_cgraph_duplication_hooks (cgraph_node *node, |
479 | cgraph_node *node2) | |
9088c1cc | 480 | { |
3dafb85c | 481 | cgraph_2node_hook_list *entry = m_first_cgraph_duplicated_hook; |
9088c1cc MJ |
482 | while (entry) |
483 | { | |
3dafb85c | 484 | entry->hook (node, node2, entry->data); |
9088c1cc MJ |
485 | entry = entry->next; |
486 | } | |
487 | } | |
488 | ||
e72fcfe8 | 489 | /* Return cgraph node assigned to DECL. Create new one when needed. */ |
0550e7b7 | 490 | |
d52f5295 ML |
491 | cgraph_node * |
492 | cgraph_node::create (tree decl) | |
e72fcfe8 | 493 | { |
3dafb85c | 494 | cgraph_node *node = symtab->create_empty (); |
341c100f | 495 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
988d1653 | 496 | |
67348ccc | 497 | node->decl = decl; |
1f6be682 | 498 | |
41dbbb37 | 499 | if ((flag_openacc || flag_openmp) |
1f6be682 IV |
500 | && lookup_attribute ("omp declare target", DECL_ATTRIBUTES (decl))) |
501 | { | |
502 | node->offloadable = 1; | |
1d899da2 TS |
503 | if (ENABLE_OFFLOADING) |
504 | g->have_offload = true; | |
1f6be682 IV |
505 | } |
506 | ||
d52f5295 | 507 | node->register_symbol (); |
1ab24192 | 508 | |
5c2e00ee | 509 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL) |
e72fcfe8 | 510 | { |
d52f5295 | 511 | node->origin = cgraph_node::get_create (DECL_CONTEXT (decl)); |
e72fcfe8 JH |
512 | node->next_nested = node->origin->nested; |
513 | node->origin->nested = node; | |
514 | } | |
515 | return node; | |
516 | } | |
517 | ||
6f99e449 MJ |
518 | /* Try to find a call graph node for declaration DECL and if it does not exist |
519 | or if it corresponds to an inline clone, create a new one. */ | |
a358e188 | 520 | |
d52f5295 ML |
521 | cgraph_node * |
522 | cgraph_node::get_create (tree decl) | |
a358e188 | 523 | { |
3dafb85c | 524 | cgraph_node *first_clone = cgraph_node::get (decl); |
a358e188 | 525 | |
6f99e449 MJ |
526 | if (first_clone && !first_clone->global.inlined_to) |
527 | return first_clone; | |
a358e188 | 528 | |
3dafb85c | 529 | cgraph_node *node = cgraph_node::create (decl); |
6f99e449 MJ |
530 | if (first_clone) |
531 | { | |
532 | first_clone->clone_of = node; | |
533 | node->clones = first_clone; | |
3dafb85c | 534 | symtab->symtab_prevail_in_asm_name_hash (node); |
aede2c10 | 535 | node->decl->decl_with_vis.symtab_node = node; |
6f99e449 MJ |
536 | if (dump_file) |
537 | fprintf (dump_file, "Introduced new external node " | |
538 | "(%s/%i) and turned into root of the clone tree.\n", | |
1aec2ecc | 539 | node->name (), node->order); |
6f99e449 MJ |
540 | } |
541 | else if (dump_file) | |
542 | fprintf (dump_file, "Introduced new external node " | |
1aec2ecc | 543 | "(%s/%i).\n", node->name (), node->order); |
6f99e449 | 544 | return node; |
a358e188 MJ |
545 | } |
546 | ||
87e7b310 | 547 | /* Mark ALIAS as an alias to DECL. DECL_NODE is cgraph node representing |
073a8998 | 548 | the function body is associated with (not necessarily cgraph_node (DECL). */ |
b2583345 | 549 | |
d52f5295 ML |
550 | cgraph_node * |
551 | cgraph_node::create_alias (tree alias, tree target) | |
b2583345 | 552 | { |
d52f5295 | 553 | cgraph_node *alias_node; |
b2583345 | 554 | |
40a7fe1e JH |
555 | gcc_assert (TREE_CODE (target) == FUNCTION_DECL |
556 | || TREE_CODE (target) == IDENTIFIER_NODE); | |
b2583345 | 557 | gcc_assert (TREE_CODE (alias) == FUNCTION_DECL); |
d52f5295 | 558 | alias_node = cgraph_node::get_create (alias); |
67348ccc DM |
559 | gcc_assert (!alias_node->definition); |
560 | alias_node->alias_target = target; | |
561 | alias_node->definition = true; | |
562 | alias_node->alias = true; | |
08346abd | 563 | if (lookup_attribute ("weakref", DECL_ATTRIBUTES (alias)) != NULL) |
71e54687 | 564 | alias_node->transparent_alias = alias_node->weakref = true; |
6744a6ab JH |
565 | return alias_node; |
566 | } | |
567 | ||
051f8cc6 | 568 | /* Attempt to mark ALIAS as an alias to DECL. Return alias node if successful |
a358e188 | 569 | and NULL otherwise. |
6744a6ab | 570 | Same body aliases are output whenever the body of DECL is output, |
d52f5295 ML |
571 | and cgraph_node::get (ALIAS) transparently returns |
572 | cgraph_node::get (DECL). */ | |
6744a6ab | 573 | |
3dafb85c | 574 | cgraph_node * |
d52f5295 | 575 | cgraph_node::create_same_body_alias (tree alias, tree decl) |
6744a6ab | 576 | { |
3dafb85c | 577 | cgraph_node *n; |
6744a6ab JH |
578 | #ifndef ASM_OUTPUT_DEF |
579 | /* If aliases aren't supported by the assembler, fail. */ | |
051f8cc6 | 580 | return NULL; |
6744a6ab | 581 | #endif |
39e2db00 JH |
582 | /* Langhooks can create same body aliases of symbols not defined. |
583 | Those are useless. Drop them on the floor. */ | |
3dafb85c | 584 | if (symtab->global_info_ready) |
39e2db00 | 585 | return NULL; |
6744a6ab | 586 | |
d52f5295 | 587 | n = cgraph_node::create_alias (alias, decl); |
67348ccc | 588 | n->cpp_implicit_alias = true; |
3dafb85c | 589 | if (symtab->cpp_implicit_aliases_done) |
d52f5295 | 590 | n->resolve_alias (cgraph_node::get (decl)); |
39e2db00 | 591 | return n; |
6744a6ab JH |
592 | } |
593 | ||
051f8cc6 | 594 | /* Add thunk alias into callgraph. The alias declaration is ALIAS and it |
61502ca8 | 595 | aliases DECL with an adjustments made into the first parameter. |
051f8cc6 JH |
596 | See comments in thunk_adjust for detail on the parameters. */ |
597 | ||
3dafb85c | 598 | cgraph_node * |
d52f5295 ML |
599 | cgraph_node::create_thunk (tree alias, tree, bool this_adjusting, |
600 | HOST_WIDE_INT fixed_offset, | |
601 | HOST_WIDE_INT virtual_value, | |
602 | tree virtual_offset, | |
603 | tree real_alias) | |
6744a6ab | 604 | { |
3dafb85c | 605 | cgraph_node *node; |
6744a6ab | 606 | |
d52f5295 | 607 | node = cgraph_node::get (alias); |
6744a6ab | 608 | if (node) |
d52f5295 | 609 | node->reset (); |
24d047a3 | 610 | else |
d52f5295 | 611 | node = cgraph_node::create (alias); |
77a74ed7 | 612 | gcc_checking_assert (!virtual_offset |
807e902e | 613 | || wi::eq_p (virtual_offset, virtual_value)); |
6744a6ab JH |
614 | node->thunk.fixed_offset = fixed_offset; |
615 | node->thunk.this_adjusting = this_adjusting; | |
616 | node->thunk.virtual_value = virtual_value; | |
617 | node->thunk.virtual_offset_p = virtual_offset != NULL; | |
618 | node->thunk.alias = real_alias; | |
619 | node->thunk.thunk_p = true; | |
67348ccc | 620 | node->definition = true; |
c47d0034 | 621 | |
051f8cc6 | 622 | return node; |
b2583345 JJ |
623 | } |
624 | ||
bedb9fc0 RH |
625 | /* Return the cgraph node that has ASMNAME for its DECL_ASSEMBLER_NAME. |
626 | Return NULL if there's no such node. */ | |
627 | ||
d52f5295 ML |
628 | cgraph_node * |
629 | cgraph_node::get_for_asmname (tree asmname) | |
bedb9fc0 | 630 | { |
1ab24192 | 631 | /* We do not want to look at inline clones. */ |
3dafb85c | 632 | for (symtab_node *node = symtab_node::get_for_asmname (asmname); |
5d59b5e1 | 633 | node; |
67348ccc | 634 | node = node->next_sharing_asm_name) |
5d59b5e1 | 635 | { |
7de90a6c | 636 | cgraph_node *cn = dyn_cast <cgraph_node *> (node); |
5d59b5e1 LC |
637 | if (cn && !cn->global.inlined_to) |
638 | return cn; | |
639 | } | |
bedb9fc0 RH |
640 | return NULL; |
641 | } | |
642 | ||
6bdf3519 | 643 | /* Returns a hash value for X (which really is a cgraph_edge). */ |
70d539ce | 644 | |
2a22f99c TS |
645 | hashval_t |
646 | cgraph_edge_hasher::hash (cgraph_edge *e) | |
70d539ce | 647 | { |
40ff1364 RB |
648 | /* This is a really poor hash function, but it is what htab_hash_pointer |
649 | uses. */ | |
650 | return (hashval_t) ((intptr_t)e->call_stmt >> 3); | |
651 | } | |
652 | ||
653 | /* Returns a hash value for X (which really is a cgraph_edge). */ | |
654 | ||
655 | hashval_t | |
355fe088 | 656 | cgraph_edge_hasher::hash (gimple *call_stmt) |
40ff1364 RB |
657 | { |
658 | /* This is a really poor hash function, but it is what htab_hash_pointer | |
659 | uses. */ | |
660 | return (hashval_t) ((intptr_t)call_stmt >> 3); | |
70d539ce JH |
661 | } |
662 | ||
026c3cfd | 663 | /* Return nonzero if the call_stmt of cgraph_edge X is stmt *Y. */ |
70d539ce | 664 | |
2a22f99c | 665 | inline bool |
355fe088 | 666 | cgraph_edge_hasher::equal (cgraph_edge *x, gimple *y) |
70d539ce | 667 | { |
2a22f99c | 668 | return x->call_stmt == y; |
70d539ce JH |
669 | } |
670 | ||
e33c6cd6 MJ |
671 | /* Add call graph edge E to call site hash of its caller. */ |
672 | ||
042ae7d2 | 673 | static inline void |
3dafb85c | 674 | cgraph_update_edge_in_call_site_hash (cgraph_edge *e) |
042ae7d2 | 675 | { |
355fe088 | 676 | gimple *call = e->call_stmt; |
40ff1364 RB |
677 | *e->caller->call_site_hash->find_slot_with_hash |
678 | (call, cgraph_edge_hasher::hash (call), INSERT) = e; | |
042ae7d2 JH |
679 | } |
680 | ||
681 | /* Add call graph edge E to call site hash of its caller. */ | |
682 | ||
e33c6cd6 | 683 | static inline void |
3dafb85c | 684 | cgraph_add_edge_to_call_site_hash (cgraph_edge *e) |
e33c6cd6 | 685 | { |
042ae7d2 JH |
686 | /* There are two speculative edges for every statement (one direct, |
687 | one indirect); always hash the direct one. */ | |
688 | if (e->speculative && e->indirect_unknown_callee) | |
689 | return; | |
2a22f99c | 690 | cgraph_edge **slot = e->caller->call_site_hash->find_slot_with_hash |
40ff1364 | 691 | (e->call_stmt, cgraph_edge_hasher::hash (e->call_stmt), INSERT); |
042ae7d2 JH |
692 | if (*slot) |
693 | { | |
3dafb85c | 694 | gcc_assert (((cgraph_edge *)*slot)->speculative); |
bfa3b50a JH |
695 | if (e->callee) |
696 | *slot = e; | |
042ae7d2 JH |
697 | return; |
698 | } | |
699 | gcc_assert (!*slot || e->speculative); | |
e33c6cd6 MJ |
700 | *slot = e; |
701 | } | |
726a989a RB |
702 | |
703 | /* Return the callgraph edge representing the GIMPLE_CALL statement | |
704 | CALL_STMT. */ | |
705 | ||
d52f5295 | 706 | cgraph_edge * |
355fe088 | 707 | cgraph_node::get_edge (gimple *call_stmt) |
18c6ada9 | 708 | { |
3dafb85c | 709 | cgraph_edge *e, *e2; |
70d539ce JH |
710 | int n = 0; |
711 | ||
d52f5295 | 712 | if (call_site_hash) |
40ff1364 RB |
713 | return call_site_hash->find_with_hash |
714 | (call_stmt, cgraph_edge_hasher::hash (call_stmt)); | |
18c6ada9 JH |
715 | |
716 | /* This loop may turn out to be performance problem. In such case adding | |
717 | hashtables into call nodes with very many edges is probably best | |
2b8a92de | 718 | solution. It is not good idea to add pointer into CALL_EXPR itself |
18c6ada9 JH |
719 | because we want to make possible having multiple cgraph nodes representing |
720 | different clones of the same body before the body is actually cloned. */ | |
d52f5295 | 721 | for (e = callees; e; e = e->next_callee) |
70d539ce JH |
722 | { |
723 | if (e->call_stmt == call_stmt) | |
724 | break; | |
725 | n++; | |
726 | } | |
726a989a | 727 | |
e33c6cd6 | 728 | if (!e) |
d52f5295 | 729 | for (e = indirect_calls; e; e = e->next_callee) |
e33c6cd6 MJ |
730 | { |
731 | if (e->call_stmt == call_stmt) | |
732 | break; | |
733 | n++; | |
734 | } | |
735 | ||
70d539ce JH |
736 | if (n > 100) |
737 | { | |
2a22f99c | 738 | call_site_hash = hash_table<cgraph_edge_hasher>::create_ggc (120); |
d52f5295 | 739 | for (e2 = callees; e2; e2 = e2->next_callee) |
e33c6cd6 | 740 | cgraph_add_edge_to_call_site_hash (e2); |
d52f5295 | 741 | for (e2 = indirect_calls; e2; e2 = e2->next_callee) |
e33c6cd6 | 742 | cgraph_add_edge_to_call_site_hash (e2); |
70d539ce | 743 | } |
726a989a | 744 | |
18c6ada9 JH |
745 | return e; |
746 | } | |
747 | ||
726a989a | 748 | |
3dafb85c | 749 | /* Change field call_stmt of edge to NEW_STMT. |
042ae7d2 JH |
750 | If UPDATE_SPECULATIVE and E is any component of speculative |
751 | edge, then update all components. */ | |
0550e7b7 | 752 | |
70d539ce | 753 | void |
538dd0b7 | 754 | cgraph_edge::set_call_stmt (gcall *new_stmt, bool update_speculative) |
70d539ce | 755 | { |
e33c6cd6 MJ |
756 | tree decl; |
757 | ||
042ae7d2 JH |
758 | /* Speculative edges has three component, update all of them |
759 | when asked to. */ | |
3dafb85c | 760 | if (update_speculative && speculative) |
042ae7d2 | 761 | { |
3dafb85c ML |
762 | cgraph_edge *direct, *indirect; |
763 | ipa_ref *ref; | |
042ae7d2 | 764 | |
3dafb85c ML |
765 | speculative_call_info (direct, indirect, ref); |
766 | direct->set_call_stmt (new_stmt, false); | |
767 | indirect->set_call_stmt (new_stmt, false); | |
042ae7d2 JH |
768 | ref->stmt = new_stmt; |
769 | return; | |
770 | } | |
771 | ||
772 | /* Only direct speculative edges go to call_site_hash. */ | |
3dafb85c ML |
773 | if (caller->call_site_hash |
774 | && (!speculative || !indirect_unknown_callee)) | |
70d539ce | 775 | { |
2a22f99c | 776 | caller->call_site_hash->remove_elt_with_hash |
40ff1364 | 777 | (call_stmt, cgraph_edge_hasher::hash (call_stmt)); |
70d539ce | 778 | } |
e33c6cd6 | 779 | |
3dafb85c ML |
780 | cgraph_edge *e = this; |
781 | ||
782 | call_stmt = new_stmt; | |
783 | if (indirect_unknown_callee | |
e33c6cd6 MJ |
784 | && (decl = gimple_call_fndecl (new_stmt))) |
785 | { | |
786 | /* Constant propagation (and possibly also inlining?) can turn an | |
787 | indirect call into a direct one. */ | |
3dafb85c | 788 | cgraph_node *new_callee = cgraph_node::get (decl); |
e33c6cd6 | 789 | |
a358e188 | 790 | gcc_checking_assert (new_callee); |
3dafb85c | 791 | e = make_direct (new_callee); |
e33c6cd6 MJ |
792 | } |
793 | ||
67348ccc | 794 | push_cfun (DECL_STRUCT_FUNCTION (e->caller->decl)); |
2505c5ed | 795 | e->can_throw_external = stmt_can_throw_external (new_stmt); |
b6fa5b01 | 796 | pop_cfun (); |
70d539ce | 797 | if (e->caller->call_site_hash) |
e33c6cd6 | 798 | cgraph_add_edge_to_call_site_hash (e); |
70d539ce JH |
799 | } |
800 | ||
e33c6cd6 MJ |
801 | /* Allocate a cgraph_edge structure and fill it with data according to the |
802 | parameters of which only CALLEE can be NULL (when creating an indirect call | |
803 | edge). */ | |
e72fcfe8 | 804 | |
d52f5295 | 805 | cgraph_edge * |
3dafb85c | 806 | symbol_table::create_edge (cgraph_node *caller, cgraph_node *callee, |
538dd0b7 DM |
807 | gcall *call_stmt, gcov_type count, int freq, |
808 | bool indir_unknown_callee) | |
e72fcfe8 | 809 | { |
d52f5295 | 810 | cgraph_edge *edge; |
18c6ada9 | 811 | |
d7f09764 DN |
812 | /* LTO does not actually have access to the call_stmt since these |
813 | have not been loaded yet. */ | |
814 | if (call_stmt) | |
815 | { | |
61502ca8 | 816 | /* This is a rather expensive check possibly triggering |
77a74ed7 | 817 | construction of call stmt hashtable. */ |
3dafb85c | 818 | cgraph_edge *e; |
b2b29377 MM |
819 | gcc_checking_assert (!(e = caller->get_edge (call_stmt)) |
820 | || e->speculative); | |
18c6ada9 | 821 | |
d7f09764 DN |
822 | gcc_assert (is_gimple_call (call_stmt)); |
823 | } | |
b58b1157 | 824 | |
934cb78a MJ |
825 | if (free_edges) |
826 | { | |
827 | edge = free_edges; | |
828 | free_edges = NEXT_FREE_EDGE (edge); | |
829 | } | |
830 | else | |
831 | { | |
3dafb85c ML |
832 | edge = ggc_alloc<cgraph_edge> (); |
833 | edge->uid = edges_max_uid++; | |
934cb78a MJ |
834 | } |
835 | ||
3dafb85c ML |
836 | edges_count++; |
837 | ||
18c6ada9 | 838 | edge->aux = NULL; |
e72fcfe8 JH |
839 | edge->caller = caller; |
840 | edge->callee = callee; | |
e33c6cd6 MJ |
841 | edge->prev_caller = NULL; |
842 | edge->next_caller = NULL; | |
843 | edge->prev_callee = NULL; | |
844 | edge->next_callee = NULL; | |
042ae7d2 | 845 | edge->lto_stmt_uid = 0; |
e33c6cd6 MJ |
846 | |
847 | edge->count = count; | |
848 | gcc_assert (count >= 0); | |
849 | edge->frequency = freq; | |
850 | gcc_assert (freq >= 0); | |
851 | gcc_assert (freq <= CGRAPH_FREQ_MAX); | |
e33c6cd6 | 852 | |
e0704a46 | 853 | edge->call_stmt = call_stmt; |
67348ccc | 854 | push_cfun (DECL_STRUCT_FUNCTION (caller->decl)); |
9f3f7d13 RG |
855 | edge->can_throw_external |
856 | = call_stmt ? stmt_can_throw_external (call_stmt) : false; | |
b6fa5b01 | 857 | pop_cfun (); |
89faf322 | 858 | if (call_stmt |
67348ccc DM |
859 | && callee && callee->decl |
860 | && !gimple_check_call_matching_types (call_stmt, callee->decl, | |
4de09b85 | 861 | false)) |
1a0bf5e1 JH |
862 | { |
863 | edge->inline_failed = CIF_MISMATCHED_ARGUMENTS; | |
864 | edge->call_stmt_cannot_inline_p = true; | |
865 | } | |
89faf322 | 866 | else |
1a0bf5e1 JH |
867 | { |
868 | edge->inline_failed = CIF_FUNCTION_NOT_CONSIDERED; | |
869 | edge->call_stmt_cannot_inline_p = false; | |
870 | } | |
e33c6cd6 MJ |
871 | |
872 | edge->indirect_info = NULL; | |
873 | edge->indirect_inlining_edge = 0; | |
5979aa54 | 874 | edge->speculative = false; |
51ce0547 | 875 | edge->indirect_unknown_callee = indir_unknown_callee; |
a6b1490d JH |
876 | if (opt_for_fn (edge->caller->decl, flag_devirtualize) |
877 | && call_stmt && DECL_STRUCT_FUNCTION (caller->decl)) | |
f9bb202b JH |
878 | edge->in_polymorphic_cdtor |
879 | = decl_maybe_in_construction_p (NULL, NULL, call_stmt, | |
880 | caller->decl); | |
881 | else | |
882 | edge->in_polymorphic_cdtor = caller->thunk.thunk_p; | |
188c7d00 JH |
883 | if (call_stmt && caller->call_site_hash) |
884 | cgraph_add_edge_to_call_site_hash (edge); | |
e33c6cd6 MJ |
885 | |
886 | return edge; | |
887 | } | |
888 | ||
d52f5295 | 889 | /* Create edge from a given function to CALLEE in the cgraph. */ |
e33c6cd6 | 890 | |
3dafb85c ML |
891 | cgraph_edge * |
892 | cgraph_node::create_edge (cgraph_node *callee, | |
538dd0b7 | 893 | gcall *call_stmt, gcov_type count, int freq) |
e33c6cd6 | 894 | { |
3dafb85c ML |
895 | cgraph_edge *edge = symtab->create_edge (this, callee, call_stmt, count, |
896 | freq, false); | |
e33c6cd6 | 897 | |
e33c6cd6 MJ |
898 | initialize_inline_failed (edge); |
899 | ||
e72fcfe8 | 900 | edge->next_caller = callee->callers; |
2563c224 RG |
901 | if (callee->callers) |
902 | callee->callers->prev_caller = edge; | |
d52f5295 ML |
903 | edge->next_callee = callees; |
904 | if (callees) | |
905 | callees->prev_callee = edge; | |
906 | callees = edge; | |
e72fcfe8 | 907 | callee->callers = edge; |
3dc9eaa6 | 908 | |
e33c6cd6 MJ |
909 | return edge; |
910 | } | |
911 | ||
ce47fda3 MJ |
912 | /* Allocate cgraph_indirect_call_info and set its fields to default values. */ |
913 | ||
3dafb85c | 914 | cgraph_indirect_call_info * |
ce47fda3 MJ |
915 | cgraph_allocate_init_indirect_info (void) |
916 | { | |
3dafb85c | 917 | cgraph_indirect_call_info *ii; |
ce47fda3 | 918 | |
766090c2 | 919 | ii = ggc_cleared_alloc<cgraph_indirect_call_info> (); |
ce47fda3 MJ |
920 | ii->param_index = -1; |
921 | return ii; | |
922 | } | |
e33c6cd6 MJ |
923 | |
924 | /* Create an indirect edge with a yet-undetermined callee where the call | |
925 | statement destination is a formal parameter of the caller with index | |
926 | PARAM_INDEX. */ | |
927 | ||
3dafb85c | 928 | cgraph_edge * |
538dd0b7 | 929 | cgraph_node::create_indirect_edge (gcall *call_stmt, int ecf_flags, |
d34af022 IE |
930 | gcov_type count, int freq, |
931 | bool compute_indirect_info) | |
e33c6cd6 | 932 | { |
3dafb85c ML |
933 | cgraph_edge *edge = symtab->create_edge (this, NULL, call_stmt, |
934 | count, freq, true); | |
1d5755ef | 935 | tree target; |
e33c6cd6 | 936 | |
3dc9eaa6 AN |
937 | initialize_inline_failed (edge); |
938 | ||
ce47fda3 | 939 | edge->indirect_info = cgraph_allocate_init_indirect_info (); |
5f902d76 | 940 | edge->indirect_info->ecf_flags = ecf_flags; |
0127c169 | 941 | edge->indirect_info->vptr_changed = true; |
e33c6cd6 | 942 | |
1d5755ef | 943 | /* Record polymorphic call info. */ |
d34af022 IE |
944 | if (compute_indirect_info |
945 | && call_stmt | |
1d5755ef JH |
946 | && (target = gimple_call_fn (call_stmt)) |
947 | && virtual_method_call_p (target)) | |
948 | { | |
6f8091fc | 949 | ipa_polymorphic_call_context context (decl, target, call_stmt); |
1d5755ef JH |
950 | |
951 | /* Only record types can have virtual calls. */ | |
68377e53 | 952 | edge->indirect_info->polymorphic = true; |
1d5755ef | 953 | edge->indirect_info->param_index = -1; |
6f8091fc JH |
954 | edge->indirect_info->otr_token |
955 | = tree_to_uhwi (OBJ_TYPE_REF_TOKEN (target)); | |
956 | edge->indirect_info->otr_type = obj_type_ref_class (target); | |
957 | gcc_assert (TREE_CODE (edge->indirect_info->otr_type) == RECORD_TYPE); | |
ba392339 | 958 | edge->indirect_info->context = context; |
1d5755ef JH |
959 | } |
960 | ||
d52f5295 ML |
961 | edge->next_callee = indirect_calls; |
962 | if (indirect_calls) | |
963 | indirect_calls->prev_callee = edge; | |
964 | indirect_calls = edge; | |
e33c6cd6 | 965 | |
e72fcfe8 JH |
966 | return edge; |
967 | } | |
968 | ||
3dafb85c | 969 | /* Remove the edge from the list of the callees of the caller. */ |
2563c224 | 970 | |
3dafb85c ML |
971 | void |
972 | cgraph_edge::remove_caller (void) | |
2563c224 | 973 | { |
3dafb85c ML |
974 | if (prev_callee) |
975 | prev_callee->next_callee = next_callee; | |
976 | if (next_callee) | |
977 | next_callee->prev_callee = prev_callee; | |
978 | if (!prev_callee) | |
e33c6cd6 | 979 | { |
3dafb85c ML |
980 | if (indirect_unknown_callee) |
981 | caller->indirect_calls = next_callee; | |
e33c6cd6 | 982 | else |
3dafb85c | 983 | caller->callees = next_callee; |
e33c6cd6 | 984 | } |
3dafb85c | 985 | if (caller->call_site_hash) |
40ff1364 RB |
986 | caller->call_site_hash->remove_elt_with_hash |
987 | (call_stmt, cgraph_edge_hasher::hash (call_stmt)); | |
2563c224 RG |
988 | } |
989 | ||
934cb78a MJ |
990 | /* Put the edge onto the free list. */ |
991 | ||
3dafb85c ML |
992 | void |
993 | symbol_table::free_edge (cgraph_edge *e) | |
934cb78a MJ |
994 | { |
995 | int uid = e->uid; | |
996 | ||
042ae7d2 JH |
997 | if (e->indirect_info) |
998 | ggc_free (e->indirect_info); | |
999 | ||
934cb78a | 1000 | /* Clear out the edge so we do not dangle pointers. */ |
5c0466b5 | 1001 | memset (e, 0, sizeof (*e)); |
934cb78a MJ |
1002 | e->uid = uid; |
1003 | NEXT_FREE_EDGE (e) = free_edges; | |
1004 | free_edges = e; | |
3dafb85c | 1005 | edges_count--; |
934cb78a MJ |
1006 | } |
1007 | ||
3dafb85c | 1008 | /* Remove the edge in the cgraph. */ |
e72fcfe8 | 1009 | |
cb967da5 | 1010 | void |
3dafb85c | 1011 | cgraph_edge::remove (void) |
e72fcfe8 | 1012 | { |
934cb78a | 1013 | /* Call all edge removal hooks. */ |
3dafb85c | 1014 | symtab->call_edge_removal_hooks (this); |
934cb78a | 1015 | |
3dafb85c | 1016 | if (!indirect_unknown_callee) |
e33c6cd6 | 1017 | /* Remove from callers list of the callee. */ |
3dafb85c | 1018 | remove_callee (); |
2563c224 RG |
1019 | |
1020 | /* Remove from callees list of the callers. */ | |
3dafb85c | 1021 | remove_caller (); |
934cb78a MJ |
1022 | |
1023 | /* Put the edge onto the free list. */ | |
3dafb85c | 1024 | symtab->free_edge (this); |
e72fcfe8 JH |
1025 | } |
1026 | ||
3dafb85c | 1027 | /* Turn edge into speculative call calling N2. Update |
042ae7d2 JH |
1028 | the profile so the direct call is taken COUNT times |
1029 | with FREQUENCY. | |
1030 | ||
1031 | At clone materialization time, the indirect call E will | |
1032 | be expanded as: | |
1033 | ||
1034 | if (call_dest == N2) | |
1035 | n2 (); | |
1036 | else | |
1037 | call call_dest | |
1038 | ||
1039 | At this time the function just creates the direct call, | |
1040 | the referencd representing the if conditional and attaches | |
09ce3660 | 1041 | them all to the orginal indirect call statement. |
042ae7d2 | 1042 | |
09ce3660 JH |
1043 | Return direct edge created. */ |
1044 | ||
3dafb85c ML |
1045 | cgraph_edge * |
1046 | cgraph_edge::make_speculative (cgraph_node *n2, gcov_type direct_count, | |
1047 | int direct_frequency) | |
042ae7d2 | 1048 | { |
3dafb85c ML |
1049 | cgraph_node *n = caller; |
1050 | ipa_ref *ref = NULL; | |
1051 | cgraph_edge *e2; | |
042ae7d2 JH |
1052 | |
1053 | if (dump_file) | |
1054 | { | |
d5c3d3ef JH |
1055 | fprintf (dump_file, "Indirect call -> speculative call" |
1056 | " %s/%i => %s/%i\n", | |
2a72a953 DM |
1057 | xstrdup_for_dump (n->name ()), n->order, |
1058 | xstrdup_for_dump (n2->name ()), n2->order); | |
042ae7d2 | 1059 | } |
3dafb85c ML |
1060 | speculative = true; |
1061 | e2 = n->create_edge (n2, call_stmt, direct_count, direct_frequency); | |
042ae7d2 JH |
1062 | initialize_inline_failed (e2); |
1063 | e2->speculative = true; | |
67348ccc | 1064 | if (TREE_NOTHROW (n2->decl)) |
bfa3b50a JH |
1065 | e2->can_throw_external = false; |
1066 | else | |
3dafb85c ML |
1067 | e2->can_throw_external = can_throw_external; |
1068 | e2->lto_stmt_uid = lto_stmt_uid; | |
f9bb202b | 1069 | e2->in_polymorphic_cdtor = in_polymorphic_cdtor; |
3dafb85c ML |
1070 | count -= e2->count; |
1071 | frequency -= e2->frequency; | |
1072 | symtab->call_edge_duplication_hooks (this, e2); | |
1073 | ref = n->create_reference (n2, IPA_REF_ADDR, call_stmt); | |
1074 | ref->lto_stmt_uid = lto_stmt_uid; | |
1075 | ref->speculative = speculative; | |
d52f5295 | 1076 | n2->mark_address_taken (); |
09ce3660 | 1077 | return e2; |
042ae7d2 JH |
1078 | } |
1079 | ||
1080 | /* Speculative call consist of three components: | |
1081 | 1) an indirect edge representing the original call | |
1082 | 2) an direct edge representing the new call | |
1083 | 3) ADDR_EXPR reference representing the speculative check. | |
1084 | All three components are attached to single statement (the indirect | |
1085 | call) and if one of them exists, all of them must exist. | |
1086 | ||
3dafb85c | 1087 | Given speculative call edge, return all three components. |
042ae7d2 JH |
1088 | */ |
1089 | ||
1090 | void | |
3dafb85c ML |
1091 | cgraph_edge::speculative_call_info (cgraph_edge *&direct, |
1092 | cgraph_edge *&indirect, | |
1093 | ipa_ref *&reference) | |
042ae7d2 | 1094 | { |
3dafb85c | 1095 | ipa_ref *ref; |
042ae7d2 | 1096 | int i; |
3dafb85c ML |
1097 | cgraph_edge *e2; |
1098 | cgraph_edge *e = this; | |
042ae7d2 JH |
1099 | |
1100 | if (!e->indirect_unknown_callee) | |
1101 | for (e2 = e->caller->indirect_calls; | |
1102 | e2->call_stmt != e->call_stmt || e2->lto_stmt_uid != e->lto_stmt_uid; | |
1103 | e2 = e2->next_callee) | |
1104 | ; | |
1105 | else | |
1106 | { | |
1107 | e2 = e; | |
1108 | /* We can take advantage of the call stmt hash. */ | |
1109 | if (e2->call_stmt) | |
1110 | { | |
d52f5295 | 1111 | e = e->caller->get_edge (e2->call_stmt); |
09ce3660 | 1112 | gcc_assert (e->speculative && !e->indirect_unknown_callee); |
042ae7d2 JH |
1113 | } |
1114 | else | |
1115 | for (e = e->caller->callees; | |
d0b66480 JH |
1116 | e2->call_stmt != e->call_stmt |
1117 | || e2->lto_stmt_uid != e->lto_stmt_uid; | |
042ae7d2 JH |
1118 | e = e->next_callee) |
1119 | ; | |
1120 | } | |
1121 | gcc_assert (e->speculative && e2->speculative); | |
d0b66480 JH |
1122 | direct = e; |
1123 | indirect = e2; | |
042ae7d2 JH |
1124 | |
1125 | reference = NULL; | |
d122681a | 1126 | for (i = 0; e->caller->iterate_reference (i, ref); i++) |
042ae7d2 JH |
1127 | if (ref->speculative |
1128 | && ((ref->stmt && ref->stmt == e->call_stmt) | |
57292ce9 | 1129 | || (!ref->stmt && ref->lto_stmt_uid == e->lto_stmt_uid))) |
042ae7d2 JH |
1130 | { |
1131 | reference = ref; | |
1132 | break; | |
1133 | } | |
d0b66480 JH |
1134 | |
1135 | /* Speculative edge always consist of all three components - direct edge, | |
1136 | indirect and reference. */ | |
1137 | ||
1138 | gcc_assert (e && e2 && ref); | |
042ae7d2 JH |
1139 | } |
1140 | ||
3dafb85c | 1141 | /* Speculative call edge turned out to be direct call to CALLE_DECL. |
042ae7d2 JH |
1142 | Remove the speculative call sequence and return edge representing the call. |
1143 | It is up to caller to redirect the call as appropriate. */ | |
1144 | ||
3dafb85c ML |
1145 | cgraph_edge * |
1146 | cgraph_edge::resolve_speculation (tree callee_decl) | |
042ae7d2 | 1147 | { |
3dafb85c ML |
1148 | cgraph_edge *edge = this; |
1149 | cgraph_edge *e2; | |
1150 | ipa_ref *ref; | |
042ae7d2 JH |
1151 | |
1152 | gcc_assert (edge->speculative); | |
3dafb85c | 1153 | edge->speculative_call_info (e2, edge, ref); |
123485ca | 1154 | if (!callee_decl |
d52f5295 ML |
1155 | || !ref->referred->semantically_equivalent_p |
1156 | (symtab_node::get (callee_decl))) | |
042ae7d2 JH |
1157 | { |
1158 | if (dump_file) | |
1159 | { | |
09ce3660 JH |
1160 | if (callee_decl) |
1161 | { | |
1162 | fprintf (dump_file, "Speculative indirect call %s/%i => %s/%i has " | |
1163 | "turned out to have contradicting known target ", | |
2a72a953 DM |
1164 | xstrdup_for_dump (edge->caller->name ()), |
1165 | edge->caller->order, | |
1166 | xstrdup_for_dump (e2->callee->name ()), | |
1167 | e2->callee->order); | |
09ce3660 JH |
1168 | print_generic_expr (dump_file, callee_decl, 0); |
1169 | fprintf (dump_file, "\n"); | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | fprintf (dump_file, "Removing speculative call %s/%i => %s/%i\n", | |
2a72a953 DM |
1174 | xstrdup_for_dump (edge->caller->name ()), |
1175 | edge->caller->order, | |
1176 | xstrdup_for_dump (e2->callee->name ()), | |
1177 | e2->callee->order); | |
09ce3660 | 1178 | } |
042ae7d2 JH |
1179 | } |
1180 | } | |
1181 | else | |
1182 | { | |
3dafb85c | 1183 | cgraph_edge *tmp = edge; |
042ae7d2 JH |
1184 | if (dump_file) |
1185 | fprintf (dump_file, "Speculative call turned into direct call.\n"); | |
1186 | edge = e2; | |
1187 | e2 = tmp; | |
d0b66480 JH |
1188 | /* FIXME: If EDGE is inlined, we should scale up the frequencies and counts |
1189 | in the functions inlined through it. */ | |
042ae7d2 JH |
1190 | } |
1191 | edge->count += e2->count; | |
1192 | edge->frequency += e2->frequency; | |
634ab819 JH |
1193 | if (edge->frequency > CGRAPH_FREQ_MAX) |
1194 | edge->frequency = CGRAPH_FREQ_MAX; | |
042ae7d2 JH |
1195 | edge->speculative = false; |
1196 | e2->speculative = false; | |
d122681a | 1197 | ref->remove_reference (); |
042ae7d2 | 1198 | if (e2->indirect_unknown_callee || e2->inline_failed) |
3dafb85c | 1199 | e2->remove (); |
042ae7d2 | 1200 | else |
d52f5295 | 1201 | e2->callee->remove_symbol_and_inline_clones (); |
042ae7d2 JH |
1202 | if (edge->caller->call_site_hash) |
1203 | cgraph_update_edge_in_call_site_hash (edge); | |
042ae7d2 JH |
1204 | return edge; |
1205 | } | |
1206 | ||
3dafb85c | 1207 | /* Make an indirect edge with an unknown callee an ordinary edge leading to |
ce47fda3 MJ |
1208 | CALLEE. DELTA is an integer constant that is to be added to the this |
1209 | pointer (first parameter) to compensate for skipping a thunk adjustment. */ | |
e33c6cd6 | 1210 | |
3dafb85c ML |
1211 | cgraph_edge * |
1212 | cgraph_edge::make_direct (cgraph_node *callee) | |
e33c6cd6 | 1213 | { |
3dafb85c ML |
1214 | cgraph_edge *edge = this; |
1215 | gcc_assert (indirect_unknown_callee); | |
042ae7d2 JH |
1216 | |
1217 | /* If we are redirecting speculative call, make it non-speculative. */ | |
3dafb85c | 1218 | if (indirect_unknown_callee && speculative) |
042ae7d2 | 1219 | { |
3dafb85c | 1220 | edge = edge->resolve_speculation (callee->decl); |
042ae7d2 JH |
1221 | |
1222 | /* On successful speculation just return the pre existing direct edge. */ | |
3dafb85c | 1223 | if (!indirect_unknown_callee) |
042ae7d2 JH |
1224 | return edge; |
1225 | } | |
1226 | ||
3dafb85c ML |
1227 | indirect_unknown_callee = 0; |
1228 | ggc_free (indirect_info); | |
1229 | indirect_info = NULL; | |
e33c6cd6 MJ |
1230 | |
1231 | /* Get the edge out of the indirect edge list. */ | |
3dafb85c ML |
1232 | if (prev_callee) |
1233 | prev_callee->next_callee = next_callee; | |
1234 | if (next_callee) | |
1235 | next_callee->prev_callee = prev_callee; | |
1236 | if (!prev_callee) | |
1237 | caller->indirect_calls = next_callee; | |
e33c6cd6 MJ |
1238 | |
1239 | /* Put it into the normal callee list */ | |
3dafb85c ML |
1240 | prev_callee = NULL; |
1241 | next_callee = caller->callees; | |
1242 | if (caller->callees) | |
1243 | caller->callees->prev_callee = edge; | |
1244 | caller->callees = edge; | |
e33c6cd6 MJ |
1245 | |
1246 | /* Insert to callers list of the new callee. */ | |
90988f77 | 1247 | edge->set_callee (callee); |
e33c6cd6 | 1248 | |
1a0bf5e1 JH |
1249 | if (call_stmt |
1250 | && !gimple_check_call_matching_types (call_stmt, callee->decl, false)) | |
1251 | { | |
1252 | call_stmt_cannot_inline_p = true; | |
1253 | inline_failed = CIF_MISMATCHED_ARGUMENTS; | |
1254 | } | |
f2906a8e | 1255 | |
e33c6cd6 MJ |
1256 | /* We need to re-determine the inlining status of the edge. */ |
1257 | initialize_inline_failed (edge); | |
042ae7d2 | 1258 | return edge; |
2563c224 RG |
1259 | } |
1260 | ||
66a20fc2 JH |
1261 | /* If necessary, change the function declaration in the call statement |
1262 | associated with E so that it corresponds to the edge callee. */ | |
1263 | ||
355fe088 | 1264 | gimple * |
3dafb85c | 1265 | cgraph_edge::redirect_call_stmt_to_callee (void) |
66a20fc2 | 1266 | { |
3dafb85c ML |
1267 | cgraph_edge *e = this; |
1268 | ||
66a20fc2 | 1269 | tree decl = gimple_call_fndecl (e->call_stmt); |
23a04216 | 1270 | tree lhs = gimple_call_lhs (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) | |
09ce3660 JH |
1295 | fprintf (dump_file, "Not expanding speculative call of %s/%i -> %s/%i\n" |
1296 | "Type mismatch.\n", | |
2a72a953 | 1297 | xstrdup_for_dump (e->caller->name ()), |
67348ccc | 1298 | e->caller->order, |
2a72a953 | 1299 | xstrdup_for_dump (e->callee->name ()), |
67348ccc | 1300 | e->callee->order); |
3dafb85c | 1301 | e = e->resolve_speculation (); |
a21e735e JH |
1302 | /* We are producing the final function body and will throw away the |
1303 | callgraph edges really soon. Reset the counts/frequencies to | |
1304 | keep verifier happy in the case of roundoff errors. */ | |
1305 | e->count = gimple_bb (e->call_stmt)->count; | |
1306 | e->frequency = compute_call_stmt_bb_frequency | |
67348ccc | 1307 | (e->caller->decl, gimple_bb (e->call_stmt)); |
09ce3660 | 1308 | } |
eefe9a99 | 1309 | /* Expand speculation into GIMPLE code. */ |
09ce3660 JH |
1310 | else |
1311 | { | |
1312 | if (dump_file) | |
a21e735e JH |
1313 | fprintf (dump_file, |
1314 | "Expanding speculative call of %s/%i -> %s/%i count:" | |
16998094 | 1315 | "%" PRId64"\n", |
2a72a953 | 1316 | xstrdup_for_dump (e->caller->name ()), |
67348ccc | 1317 | e->caller->order, |
2a72a953 | 1318 | xstrdup_for_dump (e->callee->name ()), |
67348ccc | 1319 | e->callee->order, |
a9243bfc | 1320 | (int64_t)e->count); |
042ae7d2 | 1321 | gcc_assert (e2->speculative); |
67348ccc | 1322 | push_cfun (DECL_STRUCT_FUNCTION (e->caller->decl)); |
0b986c6a JH |
1323 | new_stmt = gimple_ic (e->call_stmt, |
1324 | dyn_cast<cgraph_node *> (ref->referred), | |
042ae7d2 JH |
1325 | e->count || e2->count |
1326 | ? RDIV (e->count * REG_BR_PROB_BASE, | |
1327 | e->count + e2->count) | |
1328 | : e->frequency || e2->frequency | |
1329 | ? RDIV (e->frequency * REG_BR_PROB_BASE, | |
1330 | e->frequency + e2->frequency) | |
1331 | : REG_BR_PROB_BASE / 2, | |
1332 | e->count, e->count + e2->count); | |
1333 | e->speculative = false; | |
d52f5295 ML |
1334 | e->caller->set_call_stmt_including_clones (e->call_stmt, new_stmt, |
1335 | false); | |
d5e254e1 IE |
1336 | |
1337 | /* Fix edges for BUILT_IN_CHKP_BNDRET calls attached to the | |
1338 | processed call stmt. */ | |
1339 | if (gimple_call_with_bounds_p (new_stmt) | |
1340 | && gimple_call_lhs (new_stmt) | |
1341 | && chkp_retbnd_call_by_val (gimple_call_lhs (e2->call_stmt))) | |
1342 | { | |
1343 | tree dresult = gimple_call_lhs (new_stmt); | |
1344 | tree iresult = gimple_call_lhs (e2->call_stmt); | |
538dd0b7 DM |
1345 | gcall *dbndret = chkp_retbnd_call_by_val (dresult); |
1346 | gcall *ibndret = chkp_retbnd_call_by_val (iresult); | |
d5e254e1 IE |
1347 | struct cgraph_edge *iedge |
1348 | = e2->caller->cgraph_node::get_edge (ibndret); | |
1349 | struct cgraph_edge *dedge; | |
1350 | ||
1351 | if (dbndret) | |
1352 | { | |
1353 | dedge = iedge->caller->create_edge (iedge->callee, | |
1354 | dbndret, e->count, | |
1355 | e->frequency); | |
1356 | dedge->frequency = compute_call_stmt_bb_frequency | |
1357 | (dedge->caller->decl, gimple_bb (dedge->call_stmt)); | |
1358 | } | |
1359 | iedge->frequency = compute_call_stmt_bb_frequency | |
1360 | (iedge->caller->decl, gimple_bb (iedge->call_stmt)); | |
1361 | } | |
1362 | ||
a21e735e | 1363 | e->frequency = compute_call_stmt_bb_frequency |
67348ccc | 1364 | (e->caller->decl, gimple_bb (e->call_stmt)); |
a21e735e | 1365 | e2->frequency = compute_call_stmt_bb_frequency |
67348ccc | 1366 | (e2->caller->decl, gimple_bb (e2->call_stmt)); |
042ae7d2 JH |
1367 | e2->speculative = false; |
1368 | ref->speculative = false; | |
1369 | ref->stmt = NULL; | |
1370 | /* Indirect edges are not both in the call site hash. | |
1371 | get it updated. */ | |
1372 | if (e->caller->call_site_hash) | |
1373 | cgraph_update_edge_in_call_site_hash (e2); | |
1374 | pop_cfun (); | |
1375 | /* Continue redirecting E to proper target. */ | |
1376 | } | |
1377 | } | |
1378 | ||
8e9b2773 IE |
1379 | /* We might propagate instrumented function pointer into |
1380 | not instrumented function and vice versa. In such a | |
1381 | case we need to either fix function declaration or | |
1382 | remove bounds from call statement. */ | |
1383 | if (flag_check_pointer_bounds && e->callee) | |
1384 | skip_bounds = chkp_redirect_edge (e); | |
1385 | ||
66a20fc2 | 1386 | if (e->indirect_unknown_callee |
8e9b2773 IE |
1387 | || (decl == e->callee->decl |
1388 | && !skip_bounds)) | |
66a20fc2 JH |
1389 | return e->call_stmt; |
1390 | ||
b2b29377 | 1391 | if (flag_checking && decl) |
66a20fc2 | 1392 | { |
b2b29377 | 1393 | cgraph_node *node = cgraph_node::get (decl); |
66a20fc2 JH |
1394 | gcc_assert (!node || !node->clone.combined_args_to_skip); |
1395 | } | |
66a20fc2 | 1396 | |
3dafb85c | 1397 | if (symtab->dump_file) |
66a20fc2 | 1398 | { |
3dafb85c | 1399 | fprintf (symtab->dump_file, "updating call of %s/%i -> %s/%i: ", |
2a72a953 DM |
1400 | xstrdup_for_dump (e->caller->name ()), e->caller->order, |
1401 | xstrdup_for_dump (e->callee->name ()), e->callee->order); | |
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 | ||
67348ccc | 1424 | gimple_call_set_fndecl (new_stmt, e->callee->decl); |
c52da5f7 | 1425 | gimple_call_set_fntype (new_stmt, gimple_call_fntype (e->call_stmt)); |
66a20fc2 JH |
1426 | |
1427 | if (gimple_vdef (new_stmt) | |
1428 | && TREE_CODE (gimple_vdef (new_stmt)) == SSA_NAME) | |
1429 | SSA_NAME_DEF_STMT (gimple_vdef (new_stmt)) = new_stmt; | |
1430 | ||
1431 | gsi = gsi_for_stmt (e->call_stmt); | |
a49de7a4 JJ |
1432 | |
1433 | /* For optimized away parameters, add on the caller side | |
1434 | before the call | |
1435 | DEBUG D#X => parm_Y(D) | |
1436 | stmts and associate D#X with parm in decl_debug_args_lookup | |
1437 | vector to say for debug info that if parameter parm had been passed, | |
1438 | it would have value parm_Y(D). */ | |
1439 | if (e->callee->clone.combined_args_to_skip && MAY_HAVE_DEBUG_STMTS) | |
1440 | { | |
1441 | vec<tree, va_gc> **debug_args | |
1442 | = decl_debug_args_lookup (e->callee->decl); | |
1443 | tree old_decl = gimple_call_fndecl (e->call_stmt); | |
1444 | if (debug_args && old_decl) | |
1445 | { | |
1446 | tree parm; | |
1447 | unsigned i = 0, num; | |
1448 | unsigned len = vec_safe_length (*debug_args); | |
1449 | unsigned nargs = gimple_call_num_args (e->call_stmt); | |
1450 | for (parm = DECL_ARGUMENTS (old_decl), num = 0; | |
1451 | parm && num < nargs; | |
1452 | parm = DECL_CHAIN (parm), num++) | |
1453 | if (bitmap_bit_p (e->callee->clone.combined_args_to_skip, num) | |
1454 | && is_gimple_reg (parm)) | |
1455 | { | |
1456 | unsigned last = i; | |
1457 | ||
1458 | while (i < len && (**debug_args)[i] != DECL_ORIGIN (parm)) | |
1459 | i += 2; | |
1460 | if (i >= len) | |
1461 | { | |
1462 | i = 0; | |
1463 | while (i < last | |
1464 | && (**debug_args)[i] != DECL_ORIGIN (parm)) | |
1465 | i += 2; | |
1466 | if (i >= last) | |
1467 | continue; | |
1468 | } | |
1469 | tree ddecl = (**debug_args)[i + 1]; | |
1470 | tree arg = gimple_call_arg (e->call_stmt, num); | |
1471 | if (!useless_type_conversion_p (TREE_TYPE (ddecl), | |
1472 | TREE_TYPE (arg))) | |
1473 | { | |
1474 | tree rhs1; | |
1475 | if (!fold_convertible_p (TREE_TYPE (ddecl), arg)) | |
1476 | continue; | |
1477 | if (TREE_CODE (arg) == SSA_NAME | |
1478 | && gimple_assign_cast_p (SSA_NAME_DEF_STMT (arg)) | |
1479 | && (rhs1 | |
1480 | = gimple_assign_rhs1 (SSA_NAME_DEF_STMT (arg))) | |
1481 | && useless_type_conversion_p (TREE_TYPE (ddecl), | |
1482 | TREE_TYPE (rhs1))) | |
1483 | arg = rhs1; | |
1484 | else | |
1485 | arg = fold_convert (TREE_TYPE (ddecl), arg); | |
1486 | } | |
1487 | ||
1488 | gimple *def_temp | |
1489 | = gimple_build_debug_bind (ddecl, unshare_expr (arg), | |
1490 | e->call_stmt); | |
1491 | gsi_insert_before (&gsi, def_temp, GSI_SAME_STMT); | |
1492 | } | |
1493 | } | |
1494 | } | |
1495 | ||
66a20fc2 JH |
1496 | gsi_replace (&gsi, new_stmt, false); |
1497 | /* We need to defer cleaning EH info on the new statement to | |
1498 | fixup-cfg. We may not have dominator information at this point | |
1499 | and thus would end up with unreachable blocks and have no way | |
1500 | to communicate that we need to run CFG cleanup then. */ | |
1501 | lp_nr = lookup_stmt_eh_lp (e->call_stmt); | |
1502 | if (lp_nr != 0) | |
1503 | { | |
1504 | remove_stmt_from_eh_lp (e->call_stmt); | |
1505 | add_stmt_to_eh_lp (new_stmt, lp_nr); | |
1506 | } | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | new_stmt = e->call_stmt; | |
67348ccc | 1511 | gimple_call_set_fndecl (new_stmt, e->callee->decl); |
6a58ccca | 1512 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), new_stmt); |
66a20fc2 JH |
1513 | } |
1514 | ||
1f91747b JJ |
1515 | /* If changing the call to __cxa_pure_virtual or similar noreturn function, |
1516 | adjust gimple_call_fntype too. */ | |
1517 | if (gimple_call_noreturn_p (new_stmt) | |
1518 | && VOID_TYPE_P (TREE_TYPE (TREE_TYPE (e->callee->decl))) | |
1519 | && TYPE_ARG_TYPES (TREE_TYPE (e->callee->decl)) | |
1520 | && (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (e->callee->decl))) | |
1521 | == void_type_node)) | |
1522 | gimple_call_set_fntype (new_stmt, TREE_TYPE (e->callee->decl)); | |
1523 | ||
e6a54b01 | 1524 | /* If the call becomes noreturn, remove the LHS if possible. */ |
1f91747b JJ |
1525 | if (lhs |
1526 | && gimple_call_noreturn_p (new_stmt) | |
1527 | && (VOID_TYPE_P (TREE_TYPE (gimple_call_fntype (new_stmt))) | |
1528 | || should_remove_lhs_p (lhs))) | |
23a04216 JH |
1529 | { |
1530 | if (TREE_CODE (lhs) == SSA_NAME) | |
1531 | { | |
45b62594 RB |
1532 | tree var = create_tmp_reg_fn (DECL_STRUCT_FUNCTION (e->caller->decl), |
1533 | TREE_TYPE (lhs), NULL); | |
1534 | var = get_or_create_ssa_default_def | |
1535 | (DECL_STRUCT_FUNCTION (e->caller->decl), var); | |
355fe088 | 1536 | gimple *set_stmt = gimple_build_assign (lhs, var); |
23a04216 | 1537 | gsi = gsi_for_stmt (new_stmt); |
45b62594 RB |
1538 | gsi_insert_before_without_update (&gsi, set_stmt, GSI_SAME_STMT); |
1539 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), set_stmt); | |
23a04216 JH |
1540 | } |
1541 | gimple_call_set_lhs (new_stmt, NULL_TREE); | |
1f91035f JH |
1542 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), new_stmt); |
1543 | } | |
1544 | ||
1545 | /* If new callee has no static chain, remove it. */ | |
1546 | if (gimple_call_chain (new_stmt) && !DECL_STATIC_CHAIN (e->callee->decl)) | |
1547 | { | |
1548 | gimple_call_set_chain (new_stmt, NULL); | |
1549 | update_stmt_fn (DECL_STRUCT_FUNCTION (e->caller->decl), new_stmt); | |
23a04216 JH |
1550 | } |
1551 | ||
0b986c6a JH |
1552 | maybe_remove_unused_call_args (DECL_STRUCT_FUNCTION (e->caller->decl), |
1553 | new_stmt); | |
1554 | ||
d52f5295 | 1555 | e->caller->set_call_stmt_including_clones (e->call_stmt, new_stmt, false); |
66a20fc2 | 1556 | |
3dafb85c | 1557 | if (symtab->dump_file) |
66a20fc2 | 1558 | { |
3dafb85c ML |
1559 | fprintf (symtab->dump_file, " updated to:"); |
1560 | print_gimple_stmt (symtab->dump_file, e->call_stmt, 0, dump_flags); | |
66a20fc2 JH |
1561 | } |
1562 | return new_stmt; | |
1563 | } | |
726a989a RB |
1564 | |
1565 | /* Update or remove the corresponding cgraph edge if a GIMPLE_CALL | |
4b685e14 | 1566 | OLD_STMT changed into NEW_STMT. OLD_CALL is gimple_call_fndecl |
a9d24544 JJ |
1567 | of OLD_STMT if it was previously call statement. |
1568 | If NEW_STMT is NULL, the call has been dropped without any | |
1569 | replacement. */ | |
2bafad93 | 1570 | |
9187e02d | 1571 | static void |
3dafb85c | 1572 | cgraph_update_edges_for_call_stmt_node (cgraph_node *node, |
355fe088 TS |
1573 | gimple *old_stmt, tree old_call, |
1574 | gimple *new_stmt) | |
2bafad93 | 1575 | { |
a9d24544 JJ |
1576 | tree new_call = (new_stmt && is_gimple_call (new_stmt)) |
1577 | ? gimple_call_fndecl (new_stmt) : 0; | |
2bafad93 | 1578 | |
4b685e14 JH |
1579 | /* We are seeing indirect calls, then there is nothing to update. */ |
1580 | if (!new_call && !old_call) | |
1581 | return; | |
1582 | /* See if we turned indirect call into direct call or folded call to one builtin | |
61502ca8 | 1583 | into different builtin. */ |
2bafad93 JJ |
1584 | if (old_call != new_call) |
1585 | { | |
3dafb85c ML |
1586 | cgraph_edge *e = node->get_edge (old_stmt); |
1587 | cgraph_edge *ne = NULL; | |
4b685e14 JH |
1588 | gcov_type count; |
1589 | int frequency; | |
2bafad93 JJ |
1590 | |
1591 | if (e) | |
1592 | { | |
1f4eb0e9 | 1593 | /* Keep calls marked as dead dead. */ |
931c8e9a | 1594 | if (new_stmt && is_gimple_call (new_stmt) && e->callee |
1f4eb0e9 JH |
1595 | && DECL_BUILT_IN_CLASS (e->callee->decl) == BUILT_IN_NORMAL |
1596 | && DECL_FUNCTION_CODE (e->callee->decl) == BUILT_IN_UNREACHABLE) | |
1597 | { | |
1598 | node->get_edge (old_stmt)->set_call_stmt | |
1599 | (as_a <gcall *> (new_stmt)); | |
1600 | return; | |
1601 | } | |
e33c6cd6 MJ |
1602 | /* See if the edge is already there and has the correct callee. It |
1603 | might be so because of indirect inlining has already updated | |
97ba0040 JH |
1604 | it. We also might've cloned and redirected the edge. */ |
1605 | if (new_call && e->callee) | |
1606 | { | |
3dafb85c | 1607 | cgraph_node *callee = e->callee; |
97ba0040 JH |
1608 | while (callee) |
1609 | { | |
67348ccc | 1610 | if (callee->decl == new_call |
97ba0040 | 1611 | || callee->former_clone_of == new_call) |
eb14a79f | 1612 | { |
538dd0b7 | 1613 | e->set_call_stmt (as_a <gcall *> (new_stmt)); |
eb14a79f ML |
1614 | return; |
1615 | } | |
97ba0040 JH |
1616 | callee = callee->clone_of; |
1617 | } | |
1618 | } | |
4b685e14 JH |
1619 | |
1620 | /* Otherwise remove edge and create new one; we can't simply redirect | |
1621 | since function has changed, so inline plan and other information | |
1622 | attached to edge is invalid. */ | |
4b685e14 JH |
1623 | count = e->count; |
1624 | frequency = e->frequency; | |
2dbe8b70 | 1625 | if (e->indirect_unknown_callee || e->inline_failed) |
3dafb85c | 1626 | e->remove (); |
2dbe8b70 | 1627 | else |
d52f5295 | 1628 | e->callee->remove_symbol_and_inline_clones (); |
4b685e14 | 1629 | } |
a9d24544 | 1630 | else if (new_call) |
4b685e14 JH |
1631 | { |
1632 | /* We are seeing new direct call; compute profile info based on BB. */ | |
1633 | basic_block bb = gimple_bb (new_stmt); | |
1634 | count = bb->count; | |
1635 | frequency = compute_call_stmt_bb_frequency (current_function_decl, | |
1636 | bb); | |
2bafad93 | 1637 | } |
2bafad93 | 1638 | |
4b685e14 JH |
1639 | if (new_call) |
1640 | { | |
d52f5295 | 1641 | ne = node->create_edge (cgraph_node::get_create (new_call), |
538dd0b7 DM |
1642 | as_a <gcall *> (new_stmt), count, |
1643 | frequency); | |
4b685e14 JH |
1644 | gcc_assert (ne->inline_failed); |
1645 | } | |
2bafad93 | 1646 | } |
4b685e14 JH |
1647 | /* We only updated the call stmt; update pointer in cgraph edge.. */ |
1648 | else if (old_stmt != new_stmt) | |
538dd0b7 | 1649 | node->get_edge (old_stmt)->set_call_stmt (as_a <gcall *> (new_stmt)); |
2bafad93 JJ |
1650 | } |
1651 | ||
9187e02d | 1652 | /* Update or remove the corresponding cgraph edge if a GIMPLE_CALL |
4b685e14 JH |
1653 | OLD_STMT changed into NEW_STMT. OLD_DECL is gimple_call_fndecl |
1654 | of OLD_STMT before it was updated (updating can happen inplace). */ | |
9187e02d JH |
1655 | |
1656 | void | |
355fe088 TS |
1657 | cgraph_update_edges_for_call_stmt (gimple *old_stmt, tree old_decl, |
1658 | gimple *new_stmt) | |
9187e02d | 1659 | { |
3dafb85c ML |
1660 | cgraph_node *orig = cgraph_node::get (cfun->decl); |
1661 | cgraph_node *node; | |
9187e02d | 1662 | |
a358e188 | 1663 | gcc_checking_assert (orig); |
4b685e14 | 1664 | cgraph_update_edges_for_call_stmt_node (orig, old_stmt, old_decl, new_stmt); |
9187e02d JH |
1665 | if (orig->clones) |
1666 | for (node = orig->clones; node != orig;) | |
1667 | { | |
4b685e14 | 1668 | cgraph_update_edges_for_call_stmt_node (node, old_stmt, old_decl, new_stmt); |
9187e02d JH |
1669 | if (node->clones) |
1670 | node = node->clones; | |
1671 | else if (node->next_sibling_clone) | |
1672 | node = node->next_sibling_clone; | |
1673 | else | |
1674 | { | |
1675 | while (node != orig && !node->next_sibling_clone) | |
1676 | node = node->clone_of; | |
1677 | if (node != orig) | |
1678 | node = node->next_sibling_clone; | |
1679 | } | |
1680 | } | |
1681 | } | |
1682 | ||
726a989a | 1683 | |
2563c224 RG |
1684 | /* Remove all callees from the node. */ |
1685 | ||
1686 | void | |
d52f5295 | 1687 | cgraph_node::remove_callees (void) |
2563c224 | 1688 | { |
3dafb85c | 1689 | cgraph_edge *e, *f; |
2563c224 RG |
1690 | |
1691 | /* It is sufficient to remove the edges from the lists of callers of | |
1692 | the callees. The callee list of the node can be zapped with one | |
1693 | assignment. */ | |
d52f5295 | 1694 | for (e = callees; e; e = f) |
9088c1cc | 1695 | { |
5c0466b5 | 1696 | f = e->next_callee; |
3dafb85c | 1697 | symtab->call_edge_removal_hooks (e); |
e33c6cd6 | 1698 | if (!e->indirect_unknown_callee) |
3dafb85c ML |
1699 | e->remove_callee (); |
1700 | symtab->free_edge (e); | |
9088c1cc | 1701 | } |
d52f5295 | 1702 | for (e = indirect_calls; e; e = f) |
5f902d76 JH |
1703 | { |
1704 | f = e->next_callee; | |
3dafb85c | 1705 | symtab->call_edge_removal_hooks (e); |
5f902d76 | 1706 | if (!e->indirect_unknown_callee) |
3dafb85c ML |
1707 | e->remove_callee (); |
1708 | symtab->free_edge (e); | |
5f902d76 | 1709 | } |
d52f5295 ML |
1710 | indirect_calls = NULL; |
1711 | callees = NULL; | |
1712 | if (call_site_hash) | |
70d539ce | 1713 | { |
2a22f99c | 1714 | call_site_hash->empty (); |
d52f5295 | 1715 | call_site_hash = NULL; |
70d539ce | 1716 | } |
2563c224 RG |
1717 | } |
1718 | ||
1719 | /* Remove all callers from the node. */ | |
1720 | ||
d52f5295 ML |
1721 | void |
1722 | cgraph_node::remove_callers (void) | |
2563c224 | 1723 | { |
3dafb85c | 1724 | cgraph_edge *e, *f; |
2563c224 RG |
1725 | |
1726 | /* It is sufficient to remove the edges from the lists of callees of | |
1727 | the callers. The caller list of the node can be zapped with one | |
1728 | assignment. */ | |
d52f5295 | 1729 | for (e = callers; e; e = f) |
9088c1cc | 1730 | { |
5c0466b5 | 1731 | f = e->next_caller; |
3dafb85c ML |
1732 | symtab->call_edge_removal_hooks (e); |
1733 | e->remove_caller (); | |
1734 | symtab->free_edge (e); | |
9088c1cc | 1735 | } |
d52f5295 | 1736 | callers = NULL; |
18c6ada9 JH |
1737 | } |
1738 | ||
49bde175 JH |
1739 | /* Helper function for cgraph_release_function_body and free_lang_data. |
1740 | It releases body from function DECL without having to inspect its | |
1741 | possibly non-existent symtab node. */ | |
3a40c18a JH |
1742 | |
1743 | void | |
49bde175 | 1744 | release_function_body (tree decl) |
3a40c18a | 1745 | { |
61183076 RB |
1746 | function *fn = DECL_STRUCT_FUNCTION (decl); |
1747 | if (fn) | |
3a40c18a | 1748 | { |
61183076 | 1749 | if (fn->cfg |
381cdae4 | 1750 | && loops_for_fn (fn)) |
936fc9ba | 1751 | { |
381cdae4 RB |
1752 | fn->curr_properties &= ~PROP_loops; |
1753 | loop_optimizer_finalize (fn); | |
1754 | } | |
1755 | if (fn->gimple_df) | |
1756 | { | |
1757 | delete_tree_ssa (fn); | |
1758 | fn->eh = NULL; | |
1759 | } | |
1760 | if (fn->cfg) | |
1761 | { | |
1762 | gcc_assert (!dom_info_available_p (fn, CDI_DOMINATORS)); | |
1763 | gcc_assert (!dom_info_available_p (fn, CDI_POST_DOMINATORS)); | |
1764 | delete_tree_cfg_annotations (fn); | |
1765 | clear_edges (fn); | |
1766 | fn->cfg = NULL; | |
936fc9ba | 1767 | } |
381cdae4 RB |
1768 | if (fn->value_histograms) |
1769 | free_histograms (fn); | |
49bde175 | 1770 | gimple_set_body (decl, NULL); |
936fc9ba JH |
1771 | /* Struct function hangs a lot of data that would leak if we didn't |
1772 | removed all pointers to it. */ | |
61183076 | 1773 | ggc_free (fn); |
49bde175 JH |
1774 | DECL_STRUCT_FUNCTION (decl) = NULL; |
1775 | } | |
1776 | DECL_SAVED_TREE (decl) = NULL; | |
1777 | } | |
1778 | ||
d52f5295 | 1779 | /* Release memory used to represent body of function. |
49bde175 JH |
1780 | Use this only for functions that are released before being translated to |
1781 | target code (i.e. RTL). Functions that are compiled to RTL and beyond | |
bf898b30 ML |
1782 | are free'd in final.c via free_after_compilation(). |
1783 | KEEP_ARGUMENTS are useful only if you want to rebuild body as thunk. */ | |
49bde175 JH |
1784 | |
1785 | void | |
bf898b30 | 1786 | cgraph_node::release_body (bool keep_arguments) |
49bde175 | 1787 | { |
d52f5295 | 1788 | ipa_transforms_to_apply.release (); |
3dafb85c | 1789 | if (!used_as_abstract_origin && symtab->state != PARSING) |
49bde175 | 1790 | { |
d52f5295 | 1791 | DECL_RESULT (decl) = NULL; |
bf898b30 ML |
1792 | |
1793 | if (!keep_arguments) | |
1794 | DECL_ARGUMENTS (decl) = NULL; | |
3a40c18a | 1795 | } |
026c3cfd AH |
1796 | /* If the node is abstract and needed, then do not clear |
1797 | DECL_INITIAL of its associated function declaration because it's | |
6b20f353 | 1798 | needed to emit debug info later. */ |
d52f5295 ML |
1799 | if (!used_as_abstract_origin && DECL_INITIAL (decl)) |
1800 | DECL_INITIAL (decl) = error_mark_node; | |
1801 | release_function_body (decl); | |
1802 | if (lto_file_data) | |
1c4db829 JH |
1803 | { |
1804 | lto_free_function_in_decl_state_for_node (this); | |
1805 | lto_file_data = NULL; | |
1806 | } | |
3a40c18a JH |
1807 | } |
1808 | ||
d52f5295 | 1809 | /* Remove function from symbol table. */ |
18d13f34 JH |
1810 | |
1811 | void | |
d52f5295 | 1812 | cgraph_node::remove (void) |
18d13f34 | 1813 | { |
3dafb85c | 1814 | cgraph_node *n; |
d52f5295 | 1815 | int uid = this->uid; |
18c6ada9 | 1816 | |
3dafb85c | 1817 | symtab->call_cgraph_removal_hooks (this); |
d52f5295 ML |
1818 | remove_callers (); |
1819 | remove_callees (); | |
1820 | ipa_transforms_to_apply.release (); | |
266ad5c8 | 1821 | |
96fc428c JH |
1822 | /* Incremental inlining access removed nodes stored in the postorder list. |
1823 | */ | |
d52f5295 ML |
1824 | force_output = false; |
1825 | forced_by_abi = false; | |
1826 | for (n = nested; n; n = n->next_nested) | |
ca30a539 | 1827 | n->origin = NULL; |
d52f5295 ML |
1828 | nested = NULL; |
1829 | if (origin) | |
18d13f34 | 1830 | { |
3dafb85c | 1831 | cgraph_node **node2 = &origin->nested; |
18d13f34 | 1832 | |
d52f5295 | 1833 | while (*node2 != this) |
18d13f34 | 1834 | node2 = &(*node2)->next_nested; |
d52f5295 | 1835 | *node2 = next_nested; |
18d13f34 | 1836 | } |
d52f5295 ML |
1837 | unregister (); |
1838 | if (prev_sibling_clone) | |
1839 | prev_sibling_clone->next_sibling_clone = next_sibling_clone; | |
1840 | else if (clone_of) | |
1841 | clone_of->clones = next_sibling_clone; | |
1842 | if (next_sibling_clone) | |
1843 | next_sibling_clone->prev_sibling_clone = prev_sibling_clone; | |
1844 | if (clones) | |
18c6ada9 | 1845 | { |
3dafb85c | 1846 | cgraph_node *n, *next; |
47cb0d7d | 1847 | |
d52f5295 | 1848 | if (clone_of) |
47cb0d7d | 1849 | { |
d52f5295 ML |
1850 | for (n = clones; n->next_sibling_clone; n = n->next_sibling_clone) |
1851 | n->clone_of = clone_of; | |
1852 | n->clone_of = clone_of; | |
1853 | n->next_sibling_clone = clone_of->clones; | |
1854 | if (clone_of->clones) | |
1855 | clone_of->clones->prev_sibling_clone = n; | |
1856 | clone_of->clones = clones; | |
47cb0d7d JH |
1857 | } |
1858 | else | |
1859 | { | |
66a20fc2 | 1860 | /* We are removing node with clones. This makes clones inconsistent, |
47cb0d7d JH |
1861 | but assume they will be removed subsequently and just keep clone |
1862 | tree intact. This can happen in unreachable function removal since | |
1863 | we remove unreachable functions in random order, not by bottom-up | |
1864 | walk of clone trees. */ | |
d52f5295 | 1865 | for (n = clones; n; n = next) |
47cb0d7d JH |
1866 | { |
1867 | next = n->next_sibling_clone; | |
1868 | n->next_sibling_clone = NULL; | |
1869 | n->prev_sibling_clone = NULL; | |
1870 | n->clone_of = NULL; | |
1871 | } | |
1872 | } | |
18c6ada9 JH |
1873 | } |
1874 | ||
c22cacf3 | 1875 | /* While all the clones are removed after being proceeded, the function |
4a76d91a JH |
1876 | itself is kept in the cgraph even after it is compiled. Check whether |
1877 | we are done with this body and reclaim it proactively if this is the case. | |
1878 | */ | |
3dafb85c | 1879 | if (symtab->state != LTO_STREAMING) |
4f63dfc6 | 1880 | { |
d52f5295 | 1881 | n = cgraph_node::get (decl); |
4f63dfc6 JH |
1882 | if (!n |
1883 | || (!n->clones && !n->clone_of && !n->global.inlined_to | |
1c4db829 | 1884 | && ((symtab->global_info_ready || in_lto_p) |
67348ccc DM |
1885 | && (TREE_ASM_WRITTEN (n->decl) |
1886 | || DECL_EXTERNAL (n->decl) | |
1887 | || !n->analyzed | |
1888 | || (!flag_wpa && n->in_other_partition))))) | |
d52f5295 | 1889 | release_body (); |
4f63dfc6 | 1890 | } |
1c4db829 JH |
1891 | else |
1892 | { | |
1893 | lto_free_function_in_decl_state_for_node (this); | |
1894 | lto_file_data = NULL; | |
1895 | } | |
1ab24192 | 1896 | |
d52f5295 ML |
1897 | decl = NULL; |
1898 | if (call_site_hash) | |
70d539ce | 1899 | { |
2a22f99c | 1900 | call_site_hash->empty (); |
d52f5295 | 1901 | call_site_hash = NULL; |
70d539ce | 1902 | } |
2fb16412 | 1903 | |
d5e254e1 IE |
1904 | if (instrumented_version) |
1905 | { | |
1906 | instrumented_version->instrumented_version = NULL; | |
1907 | instrumented_version = NULL; | |
1908 | } | |
1909 | ||
3dafb85c | 1910 | symtab->release_symbol (this, uid); |
18d13f34 JH |
1911 | } |
1912 | ||
39ff5a96 JH |
1913 | /* Likewise indicate that a node is having address taken. */ |
1914 | ||
1915 | void | |
d52f5295 | 1916 | cgraph_node::mark_address_taken (void) |
39ff5a96 | 1917 | { |
4502fe8d MJ |
1918 | /* Indirect inlining can figure out that all uses of the address are |
1919 | inlined. */ | |
d52f5295 | 1920 | if (global.inlined_to) |
4502fe8d MJ |
1921 | { |
1922 | gcc_assert (cfun->after_inlining); | |
d52f5295 | 1923 | gcc_assert (callers->indirect_inlining_edge); |
4502fe8d MJ |
1924 | return; |
1925 | } | |
39e2db00 JH |
1926 | /* FIXME: address_taken flag is used both as a shortcut for testing whether |
1927 | IPA_REF_ADDR reference exists (and thus it should be set on node | |
1928 | representing alias we take address of) and as a test whether address | |
1929 | of the object was taken (and thus it should be set on node alias is | |
1930 | referring to). We should remove the first use and the remove the | |
1931 | following set. */ | |
d52f5295 ML |
1932 | address_taken = 1; |
1933 | cgraph_node *node = ultimate_alias_target (); | |
67348ccc | 1934 | node->address_taken = 1; |
39ff5a96 JH |
1935 | } |
1936 | ||
dafc5b82 JH |
1937 | /* Return local info for the compiled function. */ |
1938 | ||
3dafb85c ML |
1939 | cgraph_local_info * |
1940 | cgraph_node::local_info (tree decl) | |
dafc5b82 | 1941 | { |
341c100f | 1942 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
3dafb85c | 1943 | cgraph_node *node = get (decl); |
9f9ebcdf MJ |
1944 | if (!node) |
1945 | return NULL; | |
4bd019b8 | 1946 | return &node->ultimate_alias_target ()->local; |
dafc5b82 JH |
1947 | } |
1948 | ||
b255a036 JH |
1949 | /* Return local info for the compiled function. */ |
1950 | ||
3dafb85c ML |
1951 | cgraph_rtl_info * |
1952 | cgraph_node::rtl_info (tree decl) | |
b255a036 | 1953 | { |
341c100f | 1954 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
3dafb85c | 1955 | cgraph_node *node = get (decl); |
4bd019b8 JH |
1956 | if (!node) |
1957 | return NULL; | |
1958 | node = node->ultimate_alias_target (); | |
1959 | if (node->decl != current_function_decl | |
1960 | && !TREE_ASM_WRITTEN (node->decl)) | |
b255a036 | 1961 | return NULL; |
88f554b4 AM |
1962 | /* Allocate if it doesnt exist. */ |
1963 | if (node->ultimate_alias_target ()->rtl == NULL) | |
1964 | node->ultimate_alias_target ()->rtl = ggc_cleared_alloc<cgraph_rtl_info> (); | |
1965 | return node->ultimate_alias_target ()->rtl; | |
b255a036 JH |
1966 | } |
1967 | ||
61a05df1 JH |
1968 | /* Return a string describing the failure REASON. */ |
1969 | ||
1970 | const char* | |
1971 | cgraph_inline_failed_string (cgraph_inline_failed_t reason) | |
1972 | { | |
1973 | #undef DEFCIFCODE | |
1cf11770 | 1974 | #define DEFCIFCODE(code, type, string) string, |
61a05df1 JH |
1975 | |
1976 | static const char *cif_string_table[CIF_N_REASONS] = { | |
1977 | #include "cif-code.def" | |
1978 | }; | |
1979 | ||
1980 | /* Signedness of an enum type is implementation defined, so cast it | |
1981 | to unsigned before testing. */ | |
1982 | gcc_assert ((unsigned) reason < CIF_N_REASONS); | |
1983 | return cif_string_table[reason]; | |
1984 | } | |
1985 | ||
1cf11770 L |
1986 | /* Return a type describing the failure REASON. */ |
1987 | ||
1988 | cgraph_inline_failed_type_t | |
1989 | cgraph_inline_failed_type (cgraph_inline_failed_t reason) | |
1990 | { | |
1991 | #undef DEFCIFCODE | |
1992 | #define DEFCIFCODE(code, type, string) type, | |
1993 | ||
1994 | static cgraph_inline_failed_type_t cif_type_table[CIF_N_REASONS] = { | |
1995 | #include "cif-code.def" | |
1996 | }; | |
1997 | ||
1998 | /* Signedness of an enum type is implementation defined, so cast it | |
1999 | to unsigned before testing. */ | |
2000 | gcc_assert ((unsigned) reason < CIF_N_REASONS); | |
2001 | return cif_type_table[reason]; | |
2002 | } | |
2003 | ||
6b02a499 | 2004 | /* Names used to print out the availability enum. */ |
8a4a83ed | 2005 | const char * const cgraph_availability_names[] = |
fa10beec | 2006 | {"unset", "not_available", "overwritable", "available", "local"}; |
6b02a499 | 2007 | |
90988f77 | 2008 | /* Output flags of edge to a file F. */ |
ba392339 | 2009 | |
90988f77 ML |
2010 | void |
2011 | cgraph_edge::dump_edge_flags (FILE *f) | |
ba392339 | 2012 | { |
90988f77 | 2013 | if (speculative) |
ba392339 | 2014 | fprintf (f, "(speculative) "); |
90988f77 | 2015 | if (!inline_failed) |
ba392339 | 2016 | fprintf (f, "(inlined) "); |
1a0bf5e1 JH |
2017 | if (call_stmt_cannot_inline_p) |
2018 | fprintf (f, "(call_stmt_cannot_inline_p) "); | |
90988f77 | 2019 | if (indirect_inlining_edge) |
ba392339 | 2020 | fprintf (f, "(indirect_inlining) "); |
90988f77 | 2021 | if (count) |
16998094 | 2022 | fprintf (f, "(%" PRId64"x) ", (int64_t)count); |
90988f77 ML |
2023 | if (frequency) |
2024 | fprintf (f, "(%.2f per call) ", frequency / (double)CGRAPH_FREQ_BASE); | |
2025 | if (can_throw_external) | |
ba392339 JH |
2026 | fprintf (f, "(can throw external) "); |
2027 | } | |
c4e622b6 | 2028 | |
d52f5295 | 2029 | /* Dump call graph node to file F. */ |
c4e622b6 | 2030 | |
18c6ada9 | 2031 | void |
d52f5295 | 2032 | cgraph_node::dump (FILE *f) |
18c6ada9 | 2033 | { |
3dafb85c | 2034 | cgraph_edge *edge; |
e33c6cd6 | 2035 | |
d52f5295 | 2036 | dump_base (f); |
8f940ee6 | 2037 | |
d52f5295 | 2038 | if (global.inlined_to) |
8f940ee6 | 2039 | fprintf (f, " Function %s/%i is inline copy in %s/%i\n", |
2a72a953 | 2040 | xstrdup_for_dump (name ()), |
d52f5295 | 2041 | order, |
2a72a953 | 2042 | xstrdup_for_dump (global.inlined_to->name ()), |
d52f5295 ML |
2043 | global.inlined_to->order); |
2044 | if (clone_of) | |
8f940ee6 | 2045 | fprintf (f, " Clone of %s/%i\n", |
d52f5295 ML |
2046 | clone_of->asm_name (), |
2047 | clone_of->order); | |
3dafb85c | 2048 | if (symtab->function_flags_ready) |
8f940ee6 | 2049 | fprintf (f, " Availability: %s\n", |
d52f5295 | 2050 | cgraph_availability_names [get_availability ()]); |
8f940ee6 | 2051 | |
d52f5295 | 2052 | if (profile_id) |
634ab819 | 2053 | fprintf (f, " Profile id: %i\n", |
d52f5295 ML |
2054 | profile_id); |
2055 | fprintf (f, " First run: %i\n", tp_first_run); | |
8f940ee6 | 2056 | fprintf (f, " Function flags:"); |
d52f5295 | 2057 | if (count) |
16998094 | 2058 | fprintf (f, " executed %" PRId64"x", |
d52f5295 ML |
2059 | (int64_t)count); |
2060 | if (origin) | |
2061 | fprintf (f, " nested in: %s", origin->asm_name ()); | |
2062 | if (gimple_has_body_p (decl)) | |
726a989a | 2063 | fprintf (f, " body"); |
d52f5295 | 2064 | if (process) |
257eb6e3 | 2065 | fprintf (f, " process"); |
d52f5295 | 2066 | if (local.local) |
18c6ada9 | 2067 | fprintf (f, " local"); |
d52f5295 | 2068 | if (local.redefined_extern_inline) |
e7d6beb0 | 2069 | fprintf (f, " redefined_extern_inline"); |
d52f5295 | 2070 | if (only_called_at_startup) |
844db5d0 | 2071 | fprintf (f, " only_called_at_startup"); |
d52f5295 | 2072 | if (only_called_at_exit) |
844db5d0 | 2073 | fprintf (f, " only_called_at_exit"); |
d52f5295 | 2074 | if (tm_clone) |
0a35513e | 2075 | fprintf (f, " tm_clone"); |
b84d4347 ML |
2076 | if (icf_merged) |
2077 | fprintf (f, " icf_merged"); | |
88636b62 JH |
2078 | if (merged_comdat) |
2079 | fprintf (f, " merged_comdat"); | |
4f4ada6a JH |
2080 | if (split_part) |
2081 | fprintf (f, " split_part"); | |
2082 | if (indirect_call_target) | |
2083 | fprintf (f, " indirect_call_target"); | |
8413ca87 JJ |
2084 | if (nonfreeing_fn) |
2085 | fprintf (f, " nonfreeing_fn"); | |
d52f5295 ML |
2086 | if (DECL_STATIC_CONSTRUCTOR (decl)) |
2087 | fprintf (f," static_constructor (priority:%i)", get_init_priority ()); | |
2088 | if (DECL_STATIC_DESTRUCTOR (decl)) | |
2089 | fprintf (f," static_destructor (priority:%i)", get_fini_priority ()); | |
a89bd7d2 JH |
2090 | if (frequency == NODE_FREQUENCY_HOT) |
2091 | fprintf (f, " hot"); | |
2092 | if (frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED) | |
2093 | fprintf (f, " unlikely_executed"); | |
2094 | if (frequency == NODE_FREQUENCY_EXECUTED_ONCE) | |
2095 | fprintf (f, " executed_once"); | |
2096 | if (only_called_at_startup) | |
2097 | fprintf (f, " only_called_at_startup"); | |
2098 | if (only_called_at_exit) | |
2099 | fprintf (f, " only_called_at_exit"); | |
2100 | if (opt_for_fn (decl, optimize_size)) | |
2101 | fprintf (f, " optimize_size"); | |
a79b7ec5 TV |
2102 | if (parallelized_function) |
2103 | fprintf (f, " parallelized_function"); | |
18c6ada9 | 2104 | |
c47d0034 JH |
2105 | fprintf (f, "\n"); |
2106 | ||
d52f5295 | 2107 | if (thunk.thunk_p) |
c47d0034 | 2108 | { |
40a7fe1e | 2109 | fprintf (f, " Thunk"); |
d52f5295 | 2110 | if (thunk.alias) |
40a7fe1e | 2111 | fprintf (f, " of %s (asm: %s)", |
d52f5295 ML |
2112 | lang_hooks.decl_printable_name (thunk.alias, 2), |
2113 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk.alias))); | |
40a7fe1e | 2114 | fprintf (f, " fixed offset %i virtual value %i has " |
c47d0034 | 2115 | "virtual offset %i)\n", |
d52f5295 ML |
2116 | (int)thunk.fixed_offset, |
2117 | (int)thunk.virtual_value, | |
2118 | (int)thunk.virtual_offset_p); | |
c47d0034 | 2119 | } |
d52f5295 ML |
2120 | if (alias && thunk.alias |
2121 | && DECL_P (thunk.alias)) | |
39e2db00 | 2122 | { |
8f940ee6 | 2123 | fprintf (f, " Alias of %s", |
d52f5295 ML |
2124 | lang_hooks.decl_printable_name (thunk.alias, 2)); |
2125 | if (DECL_ASSEMBLER_NAME_SET_P (thunk.alias)) | |
39e2db00 | 2126 | fprintf (f, " (asm: %s)", |
d52f5295 | 2127 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk.alias))); |
39e2db00 JH |
2128 | fprintf (f, "\n"); |
2129 | } | |
c47d0034 | 2130 | |
8f940ee6 | 2131 | fprintf (f, " Called by: "); |
c47d0034 | 2132 | |
d52f5295 | 2133 | for (edge = callers; edge; edge = edge->next_caller) |
18c6ada9 | 2134 | { |
fec39fa6 | 2135 | fprintf (f, "%s/%i ", edge->caller->asm_name (), |
67348ccc | 2136 | edge->caller->order); |
90988f77 | 2137 | edge->dump_edge_flags (f); |
18c6ada9 JH |
2138 | } |
2139 | ||
8f940ee6 | 2140 | fprintf (f, "\n Calls: "); |
d52f5295 | 2141 | for (edge = callees; edge; edge = edge->next_callee) |
18c6ada9 | 2142 | { |
fec39fa6 | 2143 | fprintf (f, "%s/%i ", edge->callee->asm_name (), |
67348ccc | 2144 | edge->callee->order); |
90988f77 | 2145 | edge->dump_edge_flags (f); |
18c6ada9 JH |
2146 | } |
2147 | fprintf (f, "\n"); | |
6744a6ab | 2148 | |
d52f5295 | 2149 | for (edge = indirect_calls; edge; edge = edge->next_callee) |
ba392339 JH |
2150 | { |
2151 | if (edge->indirect_info->polymorphic) | |
2152 | { | |
2153 | fprintf (f, " Polymorphic indirect call of type "); | |
2154 | print_generic_expr (f, edge->indirect_info->otr_type, TDF_SLIM); | |
2155 | fprintf (f, " token:%i", (int) edge->indirect_info->otr_token); | |
2156 | } | |
2157 | else | |
2158 | fprintf (f, " Indirect call"); | |
90988f77 | 2159 | edge->dump_edge_flags (f); |
ba392339 JH |
2160 | if (edge->indirect_info->param_index != -1) |
2161 | { | |
2162 | fprintf (f, " of param:%i", edge->indirect_info->param_index); | |
2163 | if (edge->indirect_info->agg_contents) | |
2164 | fprintf (f, " loaded from %s %s at offset %i", | |
2165 | edge->indirect_info->member_ptr ? "member ptr" : "aggregate", | |
2166 | edge->indirect_info->by_ref ? "passed by reference":"", | |
2167 | (int)edge->indirect_info->offset); | |
0127c169 JH |
2168 | if (edge->indirect_info->vptr_changed) |
2169 | fprintf (f, " (vptr maybe changed)"); | |
ba392339 JH |
2170 | } |
2171 | fprintf (f, "\n"); | |
2172 | if (edge->indirect_info->polymorphic) | |
2173 | edge->indirect_info->context.dump (f); | |
2174 | } | |
d5e254e1 IE |
2175 | |
2176 | if (instrumentation_clone) | |
2177 | fprintf (f, " Is instrumented version.\n"); | |
2178 | else if (instrumented_version) | |
2179 | fprintf (f, " Has instrumented version.\n"); | |
18c6ada9 JH |
2180 | } |
2181 | ||
c4e622b6 DN |
2182 | /* Dump call graph node NODE to stderr. */ |
2183 | ||
24e47c76 | 2184 | DEBUG_FUNCTION void |
d52f5295 | 2185 | cgraph_node::debug (void) |
c4e622b6 | 2186 | { |
d52f5295 | 2187 | dump (stderr); |
c4e622b6 DN |
2188 | } |
2189 | ||
c4e622b6 | 2190 | /* Dump the callgraph to file F. */ |
e72fcfe8 JH |
2191 | |
2192 | void | |
d52f5295 | 2193 | cgraph_node::dump_cgraph (FILE *f) |
e72fcfe8 | 2194 | { |
3dafb85c | 2195 | cgraph_node *node; |
e72fcfe8 | 2196 | |
7d82fe7c | 2197 | fprintf (f, "callgraph:\n\n"); |
65c70e6b | 2198 | FOR_EACH_FUNCTION (node) |
d52f5295 | 2199 | node->dump (f); |
c4e622b6 DN |
2200 | } |
2201 | ||
1bb17c21 | 2202 | /* Return true when the DECL can possibly be inlined. */ |
d52f5295 | 2203 | |
1bb17c21 JH |
2204 | bool |
2205 | cgraph_function_possibly_inlined_p (tree decl) | |
2206 | { | |
3dafb85c | 2207 | if (!symtab->global_info_ready) |
e90acd93 | 2208 | return !DECL_UNINLINABLE (decl); |
6f312d18 | 2209 | return DECL_POSSIBLY_INLINED (decl); |
18c6ada9 JH |
2210 | } |
2211 | ||
d52f5295 | 2212 | /* cgraph_node is no longer nested function; update cgraph accordingly. */ |
8f235343 | 2213 | void |
d52f5295 | 2214 | cgraph_node::unnest (void) |
8f235343 | 2215 | { |
3dafb85c | 2216 | cgraph_node **node2 = &origin->nested; |
d52f5295 | 2217 | gcc_assert (origin); |
8f235343 | 2218 | |
d52f5295 | 2219 | while (*node2 != this) |
8f235343 | 2220 | node2 = &(*node2)->next_nested; |
d52f5295 ML |
2221 | *node2 = next_nested; |
2222 | origin = NULL; | |
8f235343 | 2223 | } |
6b02a499 JH |
2224 | |
2225 | /* Return function availability. See cgraph.h for description of individual | |
2226 | return values. */ | |
2227 | enum availability | |
f13fe18b | 2228 | cgraph_node::get_availability (symtab_node *ref) |
6b02a499 | 2229 | { |
f13fe18b JH |
2230 | if (ref) |
2231 | { | |
2232 | cgraph_node *cref = dyn_cast <cgraph_node *> (ref); | |
2233 | if (cref) | |
2234 | ref = cref->global.inlined_to; | |
2235 | } | |
6b02a499 | 2236 | enum availability avail; |
d52f5295 | 2237 | if (!analyzed) |
6b02a499 | 2238 | avail = AVAIL_NOT_AVAILABLE; |
d52f5295 | 2239 | else if (local.local) |
6b02a499 | 2240 | avail = AVAIL_LOCAL; |
f13fe18b JH |
2241 | else if (global.inlined_to) |
2242 | avail = AVAIL_AVAILABLE; | |
71e54687 | 2243 | else if (transparent_alias) |
f13fe18b | 2244 | ultimate_alias_target (&avail, ref); |
d52f5295 ML |
2245 | else if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (decl))) |
2246 | avail = AVAIL_INTERPOSABLE; | |
2247 | else if (!externally_visible) | |
6b02a499 | 2248 | avail = AVAIL_AVAILABLE; |
f13fe18b | 2249 | /* If this is a reference from symbol itself and there are no aliases, we |
65c74eb2 | 2250 | may be sure that the symbol was not interposed by something else because |
f13fe18b JH |
2251 | the symbol itself would be unreachable otherwise. |
2252 | ||
2253 | Also comdat groups are always resolved in groups. */ | |
2254 | else if ((this == ref && !has_aliases_p ()) | |
2255 | || (ref && get_comdat_group () | |
2256 | && get_comdat_group () == ref->get_comdat_group ())) | |
2257 | avail = AVAIL_AVAILABLE; | |
61502ca8 NF |
2258 | /* Inline functions are safe to be analyzed even if their symbol can |
2259 | be overwritten at runtime. It is not meaningful to enforce any sane | |
9c582551 | 2260 | behavior on replacing inline function by different body. */ |
d52f5295 | 2261 | else if (DECL_DECLARED_INLINE_P (decl)) |
4a371c8d | 2262 | avail = AVAIL_AVAILABLE; |
6b02a499 JH |
2263 | |
2264 | /* If the function can be overwritten, return OVERWRITABLE. Take | |
2265 | care at least of two notable extensions - the COMDAT functions | |
2266 | used to share template instantiations in C++ (this is symmetric | |
2267 | to code cp_cannot_inline_tree_fn and probably shall be shared and | |
f13fe18b | 2268 | the inlinability hooks completely eliminated). */ |
4a371c8d | 2269 | |
d52f5295 ML |
2270 | else if (decl_replaceable_p (decl) && !DECL_EXTERNAL (decl)) |
2271 | avail = AVAIL_INTERPOSABLE; | |
6b02a499 JH |
2272 | else avail = AVAIL_AVAILABLE; |
2273 | ||
2274 | return avail; | |
2275 | } | |
2276 | ||
be330ed4 JH |
2277 | /* Worker for cgraph_node_can_be_local_p. */ |
2278 | static bool | |
3dafb85c | 2279 | cgraph_node_cannot_be_local_p_1 (cgraph_node *node, void *) |
be330ed4 | 2280 | { |
67348ccc DM |
2281 | return !(!node->force_output |
2282 | && ((DECL_COMDAT (node->decl) | |
2283 | && !node->forced_by_abi | |
d52f5295 | 2284 | && !node->used_from_object_file_p () |
67348ccc DM |
2285 | && !node->same_comdat_group) |
2286 | || !node->externally_visible)); | |
be330ed4 JH |
2287 | } |
2288 | ||
d52f5295 | 2289 | /* Return true if cgraph_node can be made local for API change. |
a550d677 MJ |
2290 | Extern inline functions and C++ COMDAT functions can be made local |
2291 | at the expense of possible code size growth if function is used in multiple | |
2292 | compilation units. */ | |
2293 | bool | |
d52f5295 | 2294 | cgraph_node::can_be_local_p (void) |
a550d677 | 2295 | { |
d52f5295 ML |
2296 | return (!address_taken |
2297 | && !call_for_symbol_thunks_and_aliases (cgraph_node_cannot_be_local_p_1, | |
2298 | NULL, true)); | |
a550d677 MJ |
2299 | } |
2300 | ||
6cbde2e3 | 2301 | /* Call callback on cgraph_node, thunks and aliases associated to cgraph_node. |
6b715bf6 | 2302 | When INCLUDE_OVERWRITABLE is false, overwritable symbols are |
6cbde2e3 BE |
2303 | skipped. When EXCLUDE_VIRTUAL_THUNKS is true, virtual thunks are |
2304 | skipped. */ | |
be330ed4 | 2305 | bool |
d52f5295 ML |
2306 | cgraph_node::call_for_symbol_thunks_and_aliases (bool (*callback) |
2307 | (cgraph_node *, void *), | |
2308 | void *data, | |
6cbde2e3 BE |
2309 | bool include_overwritable, |
2310 | bool exclude_virtual_thunks) | |
be330ed4 | 2311 | { |
3dafb85c ML |
2312 | cgraph_edge *e; |
2313 | ipa_ref *ref; | |
6b715bf6 | 2314 | enum availability avail = AVAIL_AVAILABLE; |
be330ed4 | 2315 | |
6b715bf6 JH |
2316 | if (include_overwritable |
2317 | || (avail = get_availability ()) > AVAIL_INTERPOSABLE) | |
2318 | { | |
2319 | if (callback (this, data)) | |
2320 | return true; | |
2321 | } | |
1ede94c5 JH |
2322 | FOR_EACH_ALIAS (this, ref) |
2323 | { | |
2324 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2325 | if (include_overwritable | |
2326 | || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2327 | if (alias->call_for_symbol_thunks_and_aliases (callback, data, | |
2328 | include_overwritable, | |
2329 | exclude_virtual_thunks)) | |
2330 | return true; | |
2331 | } | |
6b715bf6 | 2332 | if (avail <= AVAIL_INTERPOSABLE) |
69a4e898 | 2333 | return false; |
d52f5295 | 2334 | for (e = callers; e; e = e->next_caller) |
be330ed4 JH |
2335 | if (e->caller->thunk.thunk_p |
2336 | && (include_overwritable | |
6cbde2e3 BE |
2337 | || e->caller->get_availability () > AVAIL_INTERPOSABLE) |
2338 | && !(exclude_virtual_thunks | |
2339 | && e->caller->thunk.virtual_offset_p)) | |
d52f5295 | 2340 | if (e->caller->call_for_symbol_thunks_and_aliases (callback, data, |
6cbde2e3 BE |
2341 | include_overwritable, |
2342 | exclude_virtual_thunks)) | |
9aa3f5c5 | 2343 | return true; |
e55637b7 | 2344 | |
be330ed4 JH |
2345 | return false; |
2346 | } | |
2347 | ||
be330ed4 JH |
2348 | /* Worker to bring NODE local. */ |
2349 | ||
d52f5295 | 2350 | bool |
3dafb85c | 2351 | cgraph_node::make_local (cgraph_node *node, void *) |
be330ed4 | 2352 | { |
d52f5295 | 2353 | gcc_checking_assert (node->can_be_local_p ()); |
67348ccc | 2354 | if (DECL_COMDAT (node->decl) || DECL_EXTERNAL (node->decl)) |
a550d677 | 2355 | { |
d52f5295 | 2356 | node->make_decl_local (); |
da66d596 | 2357 | node->set_section (NULL); |
24d047a3 | 2358 | node->set_comdat_group (NULL); |
67348ccc DM |
2359 | node->externally_visible = false; |
2360 | node->forced_by_abi = false; | |
a550d677 | 2361 | node->local.local = true; |
da66d596 | 2362 | node->set_section (NULL); |
f1703a2e JH |
2363 | node->unique_name = ((node->resolution == LDPR_PREVAILING_DEF_IRONLY |
2364 | || node->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP) | |
2365 | && !flag_incremental_link); | |
67348ccc | 2366 | node->resolution = LDPR_PREVAILING_DEF_IRONLY; |
d52f5295 | 2367 | gcc_assert (node->get_availability () == AVAIL_LOCAL); |
a550d677 | 2368 | } |
be330ed4 | 2369 | return false; |
a550d677 MJ |
2370 | } |
2371 | ||
d52f5295 | 2372 | /* Bring cgraph node local. */ |
be330ed4 JH |
2373 | |
2374 | void | |
d52f5295 | 2375 | cgraph_node::make_local (void) |
be330ed4 | 2376 | { |
d52f5295 | 2377 | call_for_symbol_thunks_and_aliases (cgraph_node::make_local, NULL, true); |
be330ed4 JH |
2378 | } |
2379 | ||
2380 | /* Worker to set nothrow flag. */ | |
2381 | ||
a2b056a3 JH |
2382 | static void |
2383 | set_nothrow_flag_1 (cgraph_node *node, bool nothrow, bool non_call, | |
2384 | bool *changed) | |
be330ed4 | 2385 | { |
3dafb85c | 2386 | cgraph_edge *e; |
71fb4f92 | 2387 | |
a2b056a3 JH |
2388 | if (nothrow && !TREE_NOTHROW (node->decl)) |
2389 | { | |
2390 | /* With non-call exceptions we can't say for sure if other function body | |
2391 | was not possibly optimized to stil throw. */ | |
2392 | if (!non_call || node->binds_to_current_def_p ()) | |
2393 | { | |
2394 | TREE_NOTHROW (node->decl) = true; | |
2395 | *changed = true; | |
2396 | for (e = node->callers; e; e = e->next_caller) | |
2397 | e->can_throw_external = false; | |
2398 | } | |
2399 | } | |
2400 | else if (!nothrow && TREE_NOTHROW (node->decl)) | |
2401 | { | |
2402 | TREE_NOTHROW (node->decl) = false; | |
2403 | *changed = true; | |
2404 | } | |
2405 | ipa_ref *ref; | |
2406 | FOR_EACH_ALIAS (node, ref) | |
2407 | { | |
2408 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2409 | if (!nothrow || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2410 | set_nothrow_flag_1 (alias, nothrow, non_call, changed); | |
2411 | } | |
2412 | for (cgraph_edge *e = node->callers; e; e = e->next_caller) | |
2413 | if (e->caller->thunk.thunk_p | |
2414 | && (!nothrow || e->caller->get_availability () > AVAIL_INTERPOSABLE)) | |
2415 | set_nothrow_flag_1 (e->caller, nothrow, non_call, changed); | |
be330ed4 JH |
2416 | } |
2417 | ||
2418 | /* Set TREE_NOTHROW on NODE's decl and on aliases of NODE | |
20cdc2be JJ |
2419 | if any to NOTHROW. */ |
2420 | ||
a2b056a3 | 2421 | bool |
d52f5295 | 2422 | cgraph_node::set_nothrow_flag (bool nothrow) |
20cdc2be | 2423 | { |
a2b056a3 JH |
2424 | bool changed = false; |
2425 | bool non_call = opt_for_fn (decl, flag_non_call_exceptions); | |
2426 | ||
2427 | if (!nothrow || get_availability () > AVAIL_INTERPOSABLE) | |
2428 | set_nothrow_flag_1 (this, nothrow, non_call, &changed); | |
2429 | else | |
2430 | { | |
2431 | ipa_ref *ref; | |
2432 | ||
2433 | FOR_EACH_ALIAS (this, ref) | |
2434 | { | |
2435 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2436 | if (!nothrow || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2437 | set_nothrow_flag_1 (alias, nothrow, non_call, &changed); | |
2438 | } | |
2439 | } | |
2440 | return changed; | |
20cdc2be JJ |
2441 | } |
2442 | ||
69a4e898 | 2443 | /* Worker to set_const_flag. */ |
20cdc2be | 2444 | |
69a4e898 JH |
2445 | static void |
2446 | set_const_flag_1 (cgraph_node *node, bool set_const, bool looping, | |
2447 | bool *changed) | |
20cdc2be | 2448 | { |
530f3a1b JH |
2449 | /* Static constructors and destructors without a side effect can be |
2450 | optimized out. */ | |
69a4e898 | 2451 | if (set_const && !looping) |
530f3a1b | 2452 | { |
67348ccc | 2453 | if (DECL_STATIC_CONSTRUCTOR (node->decl)) |
69a4e898 JH |
2454 | { |
2455 | DECL_STATIC_CONSTRUCTOR (node->decl) = 0; | |
2456 | *changed = true; | |
2457 | } | |
67348ccc | 2458 | if (DECL_STATIC_DESTRUCTOR (node->decl)) |
69a4e898 JH |
2459 | { |
2460 | DECL_STATIC_DESTRUCTOR (node->decl) = 0; | |
2461 | *changed = true; | |
2462 | } | |
530f3a1b | 2463 | } |
69a4e898 JH |
2464 | if (!set_const) |
2465 | { | |
2466 | if (TREE_READONLY (node->decl)) | |
2467 | { | |
2468 | TREE_READONLY (node->decl) = 0; | |
2469 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2470 | *changed = true; | |
2471 | } | |
2472 | } | |
2473 | else | |
2474 | { | |
2475 | /* Consider function: | |
cc950f98 | 2476 | |
69a4e898 JH |
2477 | bool a(int *p) |
2478 | { | |
2479 | return *p==*p; | |
2480 | } | |
cc950f98 | 2481 | |
69a4e898 | 2482 | During early optimization we will turn this into: |
cc950f98 | 2483 | |
69a4e898 JH |
2484 | bool a(int *p) |
2485 | { | |
2486 | return true; | |
2487 | } | |
cc950f98 | 2488 | |
69a4e898 JH |
2489 | Now if this function will be detected as CONST however when interposed |
2490 | it may end up being just pure. We always must assume the worst | |
2491 | scenario here. */ | |
2492 | if (TREE_READONLY (node->decl)) | |
2493 | { | |
2494 | if (!looping && DECL_LOOPING_CONST_OR_PURE_P (node->decl)) | |
2495 | { | |
2496 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2497 | *changed = true; | |
2498 | } | |
2499 | } | |
2500 | else if (node->binds_to_current_def_p ()) | |
2501 | { | |
2502 | TREE_READONLY (node->decl) = true; | |
2503 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping; | |
2504 | DECL_PURE_P (node->decl) = false; | |
2505 | *changed = true; | |
2506 | } | |
2507 | else | |
2508 | { | |
2509 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2510 | fprintf (dump_file, "Dropping state to PURE because function does " | |
2511 | "not bind to current def.\n"); | |
2512 | if (!DECL_PURE_P (node->decl)) | |
2513 | { | |
2514 | DECL_PURE_P (node->decl) = true; | |
2515 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping; | |
2516 | *changed = true; | |
2517 | } | |
2518 | else if (!looping && DECL_LOOPING_CONST_OR_PURE_P (node->decl)) | |
2519 | { | |
2520 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2521 | *changed = true; | |
2522 | } | |
2523 | } | |
2524 | } | |
cc950f98 | 2525 | |
69a4e898 JH |
2526 | ipa_ref *ref; |
2527 | FOR_EACH_ALIAS (node, ref) | |
cc950f98 | 2528 | { |
69a4e898 JH |
2529 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); |
2530 | if (!set_const || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2531 | set_const_flag_1 (alias, set_const, looping, changed); | |
cc950f98 | 2532 | } |
69a4e898 JH |
2533 | for (cgraph_edge *e = node->callers; e; e = e->next_caller) |
2534 | if (e->caller->thunk.thunk_p | |
2535 | && (!set_const || e->caller->get_availability () > AVAIL_INTERPOSABLE)) | |
2536 | { | |
2537 | /* Virtual thunks access virtual offset in the vtable, so they can | |
2538 | only be pure, never const. */ | |
2539 | if (set_const | |
2540 | && (e->caller->thunk.virtual_offset_p | |
2541 | || !node->binds_to_current_def_p (e->caller))) | |
2542 | *changed |= e->caller->set_pure_flag (true, looping); | |
2543 | else | |
2544 | set_const_flag_1 (e->caller, set_const, looping, changed); | |
2545 | } | |
20cdc2be JJ |
2546 | } |
2547 | ||
69a4e898 JH |
2548 | /* If SET_CONST is true, mark function, aliases and thunks to be ECF_CONST. |
2549 | If SET_CONST if false, clear the flag. | |
20cdc2be | 2550 | |
69a4e898 JH |
2551 | When setting the flag be careful about possible interposition and |
2552 | do not set the flag for functions that can be interposet and set pure | |
2553 | flag for functions that can bind to other definition. | |
2554 | ||
2555 | Return true if any change was done. */ | |
2556 | ||
2557 | bool | |
2558 | cgraph_node::set_const_flag (bool set_const, bool looping) | |
20cdc2be | 2559 | { |
69a4e898 JH |
2560 | bool changed = false; |
2561 | if (!set_const || get_availability () > AVAIL_INTERPOSABLE) | |
2562 | set_const_flag_1 (this, set_const, looping, &changed); | |
2563 | else | |
2564 | { | |
2565 | ipa_ref *ref; | |
2566 | ||
2567 | FOR_EACH_ALIAS (this, ref) | |
2568 | { | |
2569 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
2570 | if (!set_const || alias->get_availability () > AVAIL_INTERPOSABLE) | |
2571 | set_const_flag_1 (alias, set_const, looping, &changed); | |
2572 | } | |
2573 | } | |
2574 | return changed; | |
be330ed4 JH |
2575 | } |
2576 | ||
69a4e898 JH |
2577 | /* Info used by set_pure_flag_1. */ |
2578 | ||
a2b056a3 | 2579 | struct set_pure_flag_info |
69a4e898 JH |
2580 | { |
2581 | bool pure; | |
2582 | bool looping; | |
2583 | bool changed; | |
2584 | }; | |
2585 | ||
2586 | /* Worker to set_pure_flag. */ | |
be330ed4 JH |
2587 | |
2588 | static bool | |
69a4e898 | 2589 | set_pure_flag_1 (cgraph_node *node, void *data) |
be330ed4 | 2590 | { |
69a4e898 | 2591 | struct set_pure_flag_info *info = (struct set_pure_flag_info *)data; |
a1ffba98 | 2592 | /* Static constructors and destructors without a side effect can be |
530f3a1b | 2593 | optimized out. */ |
69a4e898 | 2594 | if (info->pure && !info->looping) |
530f3a1b | 2595 | { |
67348ccc | 2596 | if (DECL_STATIC_CONSTRUCTOR (node->decl)) |
69a4e898 JH |
2597 | { |
2598 | DECL_STATIC_CONSTRUCTOR (node->decl) = 0; | |
2599 | info->changed = true; | |
2600 | } | |
67348ccc | 2601 | if (DECL_STATIC_DESTRUCTOR (node->decl)) |
69a4e898 JH |
2602 | { |
2603 | DECL_STATIC_DESTRUCTOR (node->decl) = 0; | |
2604 | info->changed = true; | |
2605 | } | |
2606 | } | |
2607 | if (info->pure) | |
2608 | { | |
2609 | if (!DECL_PURE_P (node->decl) && !TREE_READONLY (node->decl)) | |
2610 | { | |
2611 | DECL_PURE_P (node->decl) = true; | |
2612 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = info->looping; | |
2613 | info->changed = true; | |
2614 | } | |
2615 | else if (DECL_LOOPING_CONST_OR_PURE_P (node->decl) | |
2616 | && !info->looping) | |
2617 | { | |
2618 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2619 | info->changed = true; | |
2620 | } | |
2621 | } | |
2622 | else | |
2623 | { | |
2624 | if (DECL_PURE_P (node->decl)) | |
2625 | { | |
2626 | DECL_PURE_P (node->decl) = false; | |
2627 | DECL_LOOPING_CONST_OR_PURE_P (node->decl) = false; | |
2628 | info->changed = true; | |
2629 | } | |
530f3a1b | 2630 | } |
be330ed4 | 2631 | return false; |
20cdc2be JJ |
2632 | } |
2633 | ||
d52f5295 | 2634 | /* Set DECL_PURE_P on cgraph_node's decl and on aliases of the node |
69a4e898 | 2635 | if any to PURE. |
be330ed4 | 2636 | |
69a4e898 JH |
2637 | When setting the flag, be careful about possible interposition. |
2638 | Return true if any change was done. */ | |
2639 | ||
2640 | bool | |
d52f5295 | 2641 | cgraph_node::set_pure_flag (bool pure, bool looping) |
fa5f5e27 | 2642 | { |
69a4e898 JH |
2643 | struct set_pure_flag_info info = {pure, looping, false}; |
2644 | if (!pure) | |
2645 | looping = false; | |
2646 | call_for_symbol_thunks_and_aliases (set_pure_flag_1, &info, !pure, true); | |
2647 | return info.changed; | |
be330ed4 | 2648 | } |
844db5d0 | 2649 | |
d52f5295 | 2650 | /* Return true when cgraph_node can not return or throw and thus |
d56026c2 JH |
2651 | it is safe to ignore its side effects for IPA analysis. */ |
2652 | ||
2653 | bool | |
d52f5295 | 2654 | cgraph_node::cannot_return_p (void) |
d56026c2 | 2655 | { |
d52f5295 | 2656 | int flags = flags_from_decl_or_type (decl); |
a6b1490d | 2657 | if (!opt_for_fn (decl, flag_exceptions)) |
d56026c2 JH |
2658 | return (flags & ECF_NORETURN) != 0; |
2659 | else | |
2660 | return ((flags & (ECF_NORETURN | ECF_NOTHROW)) | |
2661 | == (ECF_NORETURN | ECF_NOTHROW)); | |
2662 | } | |
2663 | ||
3dafb85c | 2664 | /* Return true when call of edge can not lead to return from caller |
d56026c2 JH |
2665 | and thus it is safe to ignore its side effects for IPA analysis |
2666 | when computing side effects of the caller. | |
2667 | FIXME: We could actually mark all edges that have no reaching | |
6626665f | 2668 | patch to the exit block or throw to get better results. */ |
d56026c2 | 2669 | bool |
3dafb85c | 2670 | cgraph_edge::cannot_lead_to_return_p (void) |
d56026c2 | 2671 | { |
3dafb85c | 2672 | if (caller->cannot_return_p ()) |
f10ea640 | 2673 | return true; |
3dafb85c | 2674 | if (indirect_unknown_callee) |
d56026c2 | 2675 | { |
3dafb85c | 2676 | int flags = indirect_info->ecf_flags; |
a6b1490d | 2677 | if (!opt_for_fn (caller->decl, flag_exceptions)) |
d56026c2 JH |
2678 | return (flags & ECF_NORETURN) != 0; |
2679 | else | |
2680 | return ((flags & (ECF_NORETURN | ECF_NOTHROW)) | |
2681 | == (ECF_NORETURN | ECF_NOTHROW)); | |
2682 | } | |
2683 | else | |
3dafb85c | 2684 | return callee->cannot_return_p (); |
d56026c2 JH |
2685 | } |
2686 | ||
893479de AM |
2687 | /* Return true if the call can be hot. */ |
2688 | ||
2689 | bool | |
2690 | cgraph_edge::maybe_hot_p (void) | |
2691 | { | |
a6b1490d JH |
2692 | /* TODO: Export profile_status from cfun->cfg to cgraph_node. */ |
2693 | if (profile_info | |
2694 | && opt_for_fn (caller->decl, flag_branch_probabilities) | |
893479de AM |
2695 | && !maybe_hot_count_p (NULL, count)) |
2696 | return false; | |
2697 | if (caller->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED | |
2698 | || (callee | |
2699 | && callee->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED)) | |
2700 | return false; | |
2701 | if (caller->frequency > NODE_FREQUENCY_UNLIKELY_EXECUTED | |
2702 | && (callee | |
2703 | && callee->frequency <= NODE_FREQUENCY_EXECUTED_ONCE)) | |
2704 | return false; | |
a6b1490d JH |
2705 | if (opt_for_fn (caller->decl, optimize_size)) |
2706 | return false; | |
893479de AM |
2707 | if (caller->frequency == NODE_FREQUENCY_HOT) |
2708 | return true; | |
2709 | if (caller->frequency == NODE_FREQUENCY_EXECUTED_ONCE | |
2710 | && frequency < CGRAPH_FREQ_BASE * 3 / 2) | |
2711 | return false; | |
a6b1490d | 2712 | if (opt_for_fn (caller->decl, flag_guess_branch_prob)) |
893479de AM |
2713 | { |
2714 | if (PARAM_VALUE (HOT_BB_FREQUENCY_FRACTION) == 0 | |
2715 | || frequency <= (CGRAPH_FREQ_BASE | |
a6b1490d | 2716 | / PARAM_VALUE (HOT_BB_FREQUENCY_FRACTION))) |
893479de AM |
2717 | return false; |
2718 | } | |
2719 | return true; | |
2720 | } | |
2721 | ||
9aa3f5c5 JH |
2722 | /* Worker for cgraph_can_remove_if_no_direct_calls_p. */ |
2723 | ||
2724 | static bool | |
3dafb85c | 2725 | nonremovable_p (cgraph_node *node, void *) |
9aa3f5c5 | 2726 | { |
d52f5295 | 2727 | return !node->can_remove_if_no_direct_calls_and_refs_p (); |
9aa3f5c5 JH |
2728 | } |
2729 | ||
a6a543bf JH |
2730 | /* Return true if whole comdat group can be removed if there are no direct |
2731 | calls to THIS. */ | |
9aa3f5c5 JH |
2732 | |
2733 | bool | |
e0d514da | 2734 | cgraph_node::can_remove_if_no_direct_calls_p (bool will_inline) |
9aa3f5c5 | 2735 | { |
a6a543bf JH |
2736 | struct ipa_ref *ref; |
2737 | ||
2738 | /* For local symbols or non-comdat group it is the same as | |
2739 | can_remove_if_no_direct_calls_p. */ | |
2740 | if (!externally_visible || !same_comdat_group) | |
2741 | { | |
2742 | if (DECL_EXTERNAL (decl)) | |
2743 | return true; | |
2744 | if (address_taken) | |
2745 | return false; | |
2746 | return !call_for_symbol_and_aliases (nonremovable_p, NULL, true); | |
2747 | } | |
2748 | ||
e0d514da JH |
2749 | if (will_inline && address_taken) |
2750 | return false; | |
2751 | ||
a6a543bf JH |
2752 | /* Otheriwse check if we can remove the symbol itself and then verify |
2753 | that only uses of the comdat groups are direct call to THIS | |
2754 | or its aliases. */ | |
2755 | if (!can_remove_if_no_direct_calls_and_refs_p ()) | |
9aa3f5c5 | 2756 | return false; |
a6a543bf JH |
2757 | |
2758 | /* Check that all refs come from within the comdat group. */ | |
2759 | for (int i = 0; iterate_referring (i, ref); i++) | |
2760 | if (ref->referring->get_comdat_group () != get_comdat_group ()) | |
2761 | return false; | |
2762 | ||
2763 | struct cgraph_node *target = ultimate_alias_target (); | |
2764 | for (cgraph_node *next = dyn_cast<cgraph_node *> (same_comdat_group); | |
2765 | next != this; next = dyn_cast<cgraph_node *> (next->same_comdat_group)) | |
2766 | { | |
2767 | if (!externally_visible) | |
2768 | continue; | |
2769 | if (!next->alias | |
2770 | && !next->can_remove_if_no_direct_calls_and_refs_p ()) | |
2771 | return false; | |
2772 | ||
2773 | /* If we see different symbol than THIS, be sure to check calls. */ | |
2774 | if (next->ultimate_alias_target () != target) | |
2775 | for (cgraph_edge *e = next->callers; e; e = e->next_caller) | |
e0d514da JH |
2776 | if (e->caller->get_comdat_group () != get_comdat_group () |
2777 | || will_inline) | |
a6a543bf JH |
2778 | return false; |
2779 | ||
e0d514da JH |
2780 | /* If function is not being inlined, we care only about |
2781 | references outside of the comdat group. */ | |
2782 | if (!will_inline) | |
2783 | for (int i = 0; next->iterate_referring (i, ref); i++) | |
2784 | if (ref->referring->get_comdat_group () != get_comdat_group ()) | |
2785 | return false; | |
a6a543bf JH |
2786 | } |
2787 | return true; | |
9aa3f5c5 JH |
2788 | } |
2789 | ||
d52f5295 | 2790 | /* Return true when function cgraph_node can be expected to be removed |
09411461 JH |
2791 | from program when direct calls in this compilation unit are removed. |
2792 | ||
2793 | As a special case COMDAT functions are | |
2794 | cgraph_can_remove_if_no_direct_calls_p while the are not | |
2795 | cgraph_only_called_directly_p (it is possible they are called from other | |
2796 | unit) | |
2797 | ||
2798 | This function behaves as cgraph_only_called_directly_p because eliminating | |
61502ca8 | 2799 | all uses of COMDAT function does not make it necessarily disappear from |
09411461 JH |
2800 | the program unless we are compiling whole program or we do LTO. In this |
2801 | case we know we win since dynamic linking will not really discard the | |
2802 | linkonce section. */ | |
2803 | ||
2804 | bool | |
e0d514da JH |
2805 | cgraph_node::will_be_removed_from_program_if_no_direct_calls_p |
2806 | (bool will_inline) | |
09411461 | 2807 | { |
d52f5295 | 2808 | gcc_assert (!global.inlined_to); |
a6a543bf JH |
2809 | if (DECL_EXTERNAL (decl)) |
2810 | return true; | |
d52f5295 | 2811 | |
09411461 | 2812 | if (!in_lto_p && !flag_whole_program) |
530f3a1b | 2813 | { |
a6a543bf JH |
2814 | /* If the symbol is in comdat group, we need to verify that whole comdat |
2815 | group becomes unreachable. Technically we could skip references from | |
2816 | within the group, too. */ | |
2817 | if (!only_called_directly_p ()) | |
2818 | return false; | |
2819 | if (same_comdat_group && externally_visible) | |
2820 | { | |
2821 | struct cgraph_node *target = ultimate_alias_target (); | |
e0d514da JH |
2822 | |
2823 | if (will_inline && address_taken) | |
2824 | return true; | |
a6a543bf JH |
2825 | for (cgraph_node *next = dyn_cast<cgraph_node *> (same_comdat_group); |
2826 | next != this; | |
2827 | next = dyn_cast<cgraph_node *> (next->same_comdat_group)) | |
2828 | { | |
2829 | if (!externally_visible) | |
2830 | continue; | |
2831 | if (!next->alias | |
2832 | && !next->only_called_directly_p ()) | |
2833 | return false; | |
2834 | ||
2835 | /* If we see different symbol than THIS, | |
2836 | be sure to check calls. */ | |
2837 | if (next->ultimate_alias_target () != target) | |
2838 | for (cgraph_edge *e = next->callers; e; e = e->next_caller) | |
e0d514da JH |
2839 | if (e->caller->get_comdat_group () != get_comdat_group () |
2840 | || will_inline) | |
a6a543bf | 2841 | return false; |
a6a543bf JH |
2842 | } |
2843 | } | |
2844 | return true; | |
530f3a1b | 2845 | } |
a6a543bf | 2846 | else |
e0d514da | 2847 | return can_remove_if_no_direct_calls_p (will_inline); |
09411461 JH |
2848 | } |
2849 | ||
051f8cc6 | 2850 | |
be330ed4 JH |
2851 | /* Worker for cgraph_only_called_directly_p. */ |
2852 | ||
2853 | static bool | |
3dafb85c | 2854 | cgraph_not_only_called_directly_p_1 (cgraph_node *node, void *) |
be330ed4 | 2855 | { |
d52f5295 | 2856 | return !node->only_called_directly_or_aliased_p (); |
be330ed4 JH |
2857 | } |
2858 | ||
d52f5295 | 2859 | /* Return true when function cgraph_node and all its aliases are only called |
be330ed4 JH |
2860 | directly. |
2861 | i.e. it is not externally visible, address was not taken and | |
2862 | it is not used in any other non-standard way. */ | |
2863 | ||
2864 | bool | |
d52f5295 | 2865 | cgraph_node::only_called_directly_p (void) |
be330ed4 | 2866 | { |
d52f5295 ML |
2867 | gcc_assert (ultimate_alias_target () == this); |
2868 | return !call_for_symbol_and_aliases (cgraph_not_only_called_directly_p_1, | |
be330ed4 JH |
2869 | NULL, true); |
2870 | } | |
2871 | ||
2872 | ||
2873 | /* Collect all callers of NODE. Worker for collect_callers_of_node. */ | |
2874 | ||
2875 | static bool | |
3dafb85c | 2876 | collect_callers_of_node_1 (cgraph_node *node, void *data) |
be330ed4 | 2877 | { |
d52f5295 | 2878 | vec<cgraph_edge *> *redirect_callers = (vec<cgraph_edge *> *)data; |
3dafb85c | 2879 | cgraph_edge *cs; |
be330ed4 | 2880 | enum availability avail; |
d52f5295 | 2881 | node->ultimate_alias_target (&avail); |
be330ed4 | 2882 | |
d52f5295 | 2883 | if (avail > AVAIL_INTERPOSABLE) |
be330ed4 | 2884 | for (cs = node->callers; cs != NULL; cs = cs->next_caller) |
4a414de8 MJ |
2885 | if (!cs->indirect_inlining_edge |
2886 | && !cs->caller->thunk.thunk_p) | |
9771b263 | 2887 | redirect_callers->safe_push (cs); |
be330ed4 JH |
2888 | return false; |
2889 | } | |
2890 | ||
d52f5295 ML |
2891 | /* Collect all callers of cgraph_node and its aliases that are known to lead to |
2892 | cgraph_node (i.e. are not overwritable). */ | |
be330ed4 | 2893 | |
d52f5295 ML |
2894 | vec<cgraph_edge *> |
2895 | cgraph_node::collect_callers (void) | |
be330ed4 | 2896 | { |
d52f5295 ML |
2897 | vec<cgraph_edge *> redirect_callers = vNULL; |
2898 | call_for_symbol_thunks_and_aliases (collect_callers_of_node_1, | |
2899 | &redirect_callers, false); | |
be330ed4 JH |
2900 | return redirect_callers; |
2901 | } | |
2902 | ||
610c8ef0 MJ |
2903 | /* Return TRUE if NODE2 a clone of NODE or is equivalent to it. */ |
2904 | ||
9c8305f8 | 2905 | static bool |
3dafb85c | 2906 | clone_of_p (cgraph_node *node, cgraph_node *node2) |
9c8305f8 | 2907 | { |
610c8ef0 | 2908 | bool skipped_thunk = false; |
d52f5295 ML |
2909 | node = node->ultimate_alias_target (); |
2910 | node2 = node2->ultimate_alias_target (); | |
610c8ef0 MJ |
2911 | |
2912 | /* There are no virtual clones of thunks so check former_clone_of or if we | |
2913 | might have skipped thunks because this adjustments are no longer | |
2914 | necessary. */ | |
2915 | while (node->thunk.thunk_p) | |
2916 | { | |
2917 | if (node2->former_clone_of == node->decl) | |
2918 | return true; | |
2919 | if (!node->thunk.this_adjusting) | |
2920 | return false; | |
d52f5295 | 2921 | node = node->callees->callee->ultimate_alias_target (); |
610c8ef0 MJ |
2922 | skipped_thunk = true; |
2923 | } | |
2924 | ||
803d0ab0 MJ |
2925 | if (skipped_thunk) |
2926 | { | |
2927 | if (!node2->clone.args_to_skip | |
2928 | || !bitmap_bit_p (node2->clone.args_to_skip, 0)) | |
2929 | return false; | |
2930 | if (node2->former_clone_of == node->decl) | |
2931 | return true; | |
2932 | else if (!node2->clone_of) | |
2933 | return false; | |
2934 | } | |
610c8ef0 | 2935 | |
9c8305f8 JH |
2936 | while (node != node2 && node2) |
2937 | node2 = node2->clone_of; | |
2938 | return node2 != NULL; | |
2939 | } | |
2940 | ||
90988f77 | 2941 | /* Verify edge count and frequency. */ |
9c8305f8 | 2942 | |
90988f77 ML |
2943 | bool |
2944 | cgraph_edge::verify_count_and_frequency () | |
9c8305f8 JH |
2945 | { |
2946 | bool error_found = false; | |
90988f77 | 2947 | if (count < 0) |
9c8305f8 JH |
2948 | { |
2949 | error ("caller edge count is negative"); | |
2950 | error_found = true; | |
2951 | } | |
90988f77 | 2952 | if (frequency < 0) |
9c8305f8 JH |
2953 | { |
2954 | error ("caller edge frequency is negative"); | |
2955 | error_found = true; | |
2956 | } | |
90988f77 | 2957 | if (frequency > CGRAPH_FREQ_MAX) |
9c8305f8 JH |
2958 | { |
2959 | error ("caller edge frequency is too large"); | |
2960 | error_found = true; | |
2961 | } | |
9c8305f8 JH |
2962 | return error_found; |
2963 | } | |
2964 | ||
2965 | /* Switch to THIS_CFUN if needed and print STMT to stderr. */ | |
2966 | static void | |
355fe088 | 2967 | cgraph_debug_gimple_stmt (function *this_cfun, gimple *stmt) |
9c8305f8 | 2968 | { |
27f7e1c3 | 2969 | bool fndecl_was_null = false; |
9c8305f8 JH |
2970 | /* debug_gimple_stmt needs correct cfun */ |
2971 | if (cfun != this_cfun) | |
2972 | set_cfun (this_cfun); | |
27f7e1c3 AH |
2973 | /* ...and an actual current_function_decl */ |
2974 | if (!current_function_decl) | |
2975 | { | |
2976 | current_function_decl = this_cfun->decl; | |
2977 | fndecl_was_null = true; | |
2978 | } | |
9c8305f8 | 2979 | debug_gimple_stmt (stmt); |
27f7e1c3 AH |
2980 | if (fndecl_was_null) |
2981 | current_function_decl = NULL; | |
9c8305f8 JH |
2982 | } |
2983 | ||
90988f77 | 2984 | /* Verify that call graph edge corresponds to DECL from the associated |
9c8305f8 JH |
2985 | statement. Return true if the verification should fail. */ |
2986 | ||
90988f77 ML |
2987 | bool |
2988 | cgraph_edge::verify_corresponds_to_fndecl (tree decl) | |
9c8305f8 | 2989 | { |
3dafb85c | 2990 | cgraph_node *node; |
9c8305f8 | 2991 | |
90988f77 | 2992 | if (!decl || callee->global.inlined_to) |
9c8305f8 | 2993 | return false; |
3dafb85c | 2994 | if (symtab->state == LTO_STREAMING) |
ca0f62a8 | 2995 | return false; |
d52f5295 | 2996 | node = cgraph_node::get (decl); |
9c8305f8 JH |
2997 | |
2998 | /* We do not know if a node from a different partition is an alias or what it | |
3d8d0043 MJ |
2999 | aliases and therefore cannot do the former_clone_of check reliably. When |
3000 | body_removed is set, we have lost all information about what was alias or | |
3001 | thunk of and also cannot proceed. */ | |
3002 | if (!node | |
3003 | || node->body_removed | |
3004 | || node->in_other_partition | |
0a7246ee | 3005 | || callee->icf_merged |
90988f77 | 3006 | || callee->in_other_partition) |
9c8305f8 | 3007 | return false; |
9de6f6c3 | 3008 | |
d52f5295 ML |
3009 | node = node->ultimate_alias_target (); |
3010 | ||
9de6f6c3 | 3011 | /* Optimizers can redirect unreachable calls or calls triggering undefined |
9c582551 | 3012 | behavior to builtin_unreachable. */ |
90988f77 ML |
3013 | if (DECL_BUILT_IN_CLASS (callee->decl) == BUILT_IN_NORMAL |
3014 | && DECL_FUNCTION_CODE (callee->decl) == BUILT_IN_UNREACHABLE) | |
9de6f6c3 | 3015 | return false; |
9c8305f8 | 3016 | |
90988f77 ML |
3017 | if (callee->former_clone_of != node->decl |
3018 | && (node != callee->ultimate_alias_target ()) | |
3019 | && !clone_of_p (node, callee)) | |
9c8305f8 JH |
3020 | return true; |
3021 | else | |
3022 | return false; | |
3023 | } | |
3024 | ||
3025 | /* Verify cgraph nodes of given cgraph node. */ | |
3026 | DEBUG_FUNCTION void | |
d52f5295 | 3027 | cgraph_node::verify_node (void) |
9c8305f8 | 3028 | { |
3dafb85c ML |
3029 | cgraph_edge *e; |
3030 | function *this_cfun = DECL_STRUCT_FUNCTION (decl); | |
9c8305f8 JH |
3031 | basic_block this_block; |
3032 | gimple_stmt_iterator gsi; | |
3033 | bool error_found = false; | |
3034 | ||
3035 | if (seen_error ()) | |
3036 | return; | |
3037 | ||
3038 | timevar_push (TV_CGRAPH_VERIFY); | |
d52f5295 ML |
3039 | error_found |= verify_base (); |
3040 | for (e = callees; e; e = e->next_callee) | |
9c8305f8 JH |
3041 | if (e->aux) |
3042 | { | |
3043 | error ("aux field set for edge %s->%s", | |
fec39fa6 TS |
3044 | identifier_to_locale (e->caller->name ()), |
3045 | identifier_to_locale (e->callee->name ())); | |
9c8305f8 JH |
3046 | error_found = true; |
3047 | } | |
d52f5295 | 3048 | if (count < 0) |
9c8305f8 JH |
3049 | { |
3050 | error ("execution count is negative"); | |
3051 | error_found = true; | |
3052 | } | |
d52f5295 | 3053 | if (global.inlined_to && same_comdat_group) |
65d630d4 JH |
3054 | { |
3055 | error ("inline clone in same comdat group list"); | |
3056 | error_found = true; | |
3057 | } | |
d52f5295 | 3058 | if (!definition && !in_other_partition && local.local) |
e70670cf JH |
3059 | { |
3060 | error ("local symbols must be defined"); | |
3061 | error_found = true; | |
3062 | } | |
d52f5295 | 3063 | if (global.inlined_to && externally_visible) |
9c8305f8 JH |
3064 | { |
3065 | error ("externally visible inline clone"); | |
3066 | error_found = true; | |
3067 | } | |
d52f5295 | 3068 | if (global.inlined_to && address_taken) |
9c8305f8 JH |
3069 | { |
3070 | error ("inline clone with address taken"); | |
3071 | error_found = true; | |
3072 | } | |
d52f5295 | 3073 | if (global.inlined_to && force_output) |
9c8305f8 JH |
3074 | { |
3075 | error ("inline clone is forced to output"); | |
3076 | error_found = true; | |
3077 | } | |
d52f5295 | 3078 | for (e = indirect_calls; e; e = e->next_callee) |
9c8305f8 JH |
3079 | { |
3080 | if (e->aux) | |
3081 | { | |
3082 | error ("aux field set for indirect edge from %s", | |
fec39fa6 | 3083 | identifier_to_locale (e->caller->name ())); |
9c8305f8 JH |
3084 | error_found = true; |
3085 | } | |
3086 | if (!e->indirect_unknown_callee | |
3087 | || !e->indirect_info) | |
3088 | { | |
3089 | error ("An indirect edge from %s is not marked as indirect or has " | |
3090 | "associated indirect_info, the corresponding statement is: ", | |
fec39fa6 | 3091 | identifier_to_locale (e->caller->name ())); |
9c8305f8 JH |
3092 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
3093 | error_found = true; | |
3094 | } | |
3095 | } | |
d52f5295 ML |
3096 | bool check_comdat = comdat_local_p (); |
3097 | for (e = callers; e; e = e->next_caller) | |
9c8305f8 | 3098 | { |
90988f77 | 3099 | if (e->verify_count_and_frequency ()) |
9c8305f8 | 3100 | error_found = true; |
1f26ac87 | 3101 | if (check_comdat |
d52f5295 | 3102 | && !in_same_comdat_group_p (e->caller)) |
1f26ac87 JM |
3103 | { |
3104 | error ("comdat-local function called by %s outside its comdat", | |
3105 | identifier_to_locale (e->caller->name ())); | |
3106 | error_found = true; | |
3107 | } | |
9c8305f8 JH |
3108 | if (!e->inline_failed) |
3109 | { | |
d52f5295 | 3110 | if (global.inlined_to |
9c8305f8 JH |
3111 | != (e->caller->global.inlined_to |
3112 | ? e->caller->global.inlined_to : e->caller)) | |
3113 | { | |
3114 | error ("inlined_to pointer is wrong"); | |
3115 | error_found = true; | |
3116 | } | |
d52f5295 | 3117 | if (callers->next_caller) |
9c8305f8 JH |
3118 | { |
3119 | error ("multiple inline callers"); | |
3120 | error_found = true; | |
3121 | } | |
3122 | } | |
3123 | else | |
d52f5295 | 3124 | if (global.inlined_to) |
9c8305f8 JH |
3125 | { |
3126 | error ("inlined_to pointer set for noninline callers"); | |
3127 | error_found = true; | |
3128 | } | |
3129 | } | |
1f4eb0e9 JH |
3130 | for (e = callees; e; e = e->next_callee) |
3131 | { | |
3132 | if (e->verify_count_and_frequency ()) | |
3133 | error_found = true; | |
3134 | if (gimple_has_body_p (e->caller->decl) | |
3135 | && !e->caller->global.inlined_to | |
3136 | && !e->speculative | |
3137 | /* Optimized out calls are redirected to __builtin_unreachable. */ | |
3138 | && (e->frequency | |
ea6e17d5 RB |
3139 | || ! e->callee->decl |
3140 | || DECL_BUILT_IN_CLASS (e->callee->decl) != BUILT_IN_NORMAL | |
3141 | || DECL_FUNCTION_CODE (e->callee->decl) != BUILT_IN_UNREACHABLE) | |
1f4eb0e9 JH |
3142 | && (e->frequency |
3143 | != compute_call_stmt_bb_frequency (e->caller->decl, | |
3144 | gimple_bb (e->call_stmt)))) | |
3145 | { | |
3146 | error ("caller edge frequency %i does not match BB frequency %i", | |
3147 | e->frequency, | |
3148 | compute_call_stmt_bb_frequency (e->caller->decl, | |
3149 | gimple_bb (e->call_stmt))); | |
3150 | error_found = true; | |
3151 | } | |
3152 | } | |
d52f5295 | 3153 | for (e = indirect_calls; e; e = e->next_callee) |
1f4eb0e9 JH |
3154 | { |
3155 | if (e->verify_count_and_frequency ()) | |
3156 | error_found = true; | |
3157 | if (gimple_has_body_p (e->caller->decl) | |
3158 | && !e->caller->global.inlined_to | |
3159 | && !e->speculative | |
3160 | && (e->frequency | |
3161 | != compute_call_stmt_bb_frequency (e->caller->decl, | |
3162 | gimple_bb (e->call_stmt)))) | |
3163 | { | |
3164 | error ("indirect call frequency %i does not match BB frequency %i", | |
3165 | e->frequency, | |
3166 | compute_call_stmt_bb_frequency (e->caller->decl, | |
3167 | gimple_bb (e->call_stmt))); | |
3168 | error_found = true; | |
3169 | } | |
3170 | } | |
d52f5295 | 3171 | if (!callers && global.inlined_to) |
9c8305f8 JH |
3172 | { |
3173 | error ("inlined_to pointer is set but no predecessors found"); | |
3174 | error_found = true; | |
3175 | } | |
d52f5295 | 3176 | if (global.inlined_to == this) |
9c8305f8 JH |
3177 | { |
3178 | error ("inlined_to pointer refers to itself"); | |
3179 | error_found = true; | |
3180 | } | |
3181 | ||
d52f5295 | 3182 | if (clone_of) |
9c8305f8 | 3183 | { |
3dafb85c | 3184 | cgraph_node *n; |
d52f5295 ML |
3185 | for (n = clone_of->clones; n; n = n->next_sibling_clone) |
3186 | if (n == this) | |
9c8305f8 JH |
3187 | break; |
3188 | if (!n) | |
3189 | { | |
d52f5295 | 3190 | error ("cgraph_node has wrong clone_of"); |
9c8305f8 JH |
3191 | error_found = true; |
3192 | } | |
3193 | } | |
d52f5295 | 3194 | if (clones) |
9c8305f8 | 3195 | { |
3dafb85c | 3196 | cgraph_node *n; |
d52f5295 ML |
3197 | for (n = clones; n; n = n->next_sibling_clone) |
3198 | if (n->clone_of != this) | |
9c8305f8 JH |
3199 | break; |
3200 | if (n) | |
3201 | { | |
d52f5295 | 3202 | error ("cgraph_node has wrong clone list"); |
9c8305f8 JH |
3203 | error_found = true; |
3204 | } | |
3205 | } | |
d52f5295 | 3206 | if ((prev_sibling_clone || next_sibling_clone) && !clone_of) |
9c8305f8 | 3207 | { |
d52f5295 | 3208 | error ("cgraph_node is in clone list but it is not clone"); |
9c8305f8 JH |
3209 | error_found = true; |
3210 | } | |
d52f5295 | 3211 | if (!prev_sibling_clone && clone_of && clone_of->clones != this) |
9c8305f8 | 3212 | { |
d52f5295 | 3213 | error ("cgraph_node has wrong prev_clone pointer"); |
9c8305f8 JH |
3214 | error_found = true; |
3215 | } | |
d52f5295 | 3216 | if (prev_sibling_clone && prev_sibling_clone->next_sibling_clone != this) |
9c8305f8 JH |
3217 | { |
3218 | error ("double linked list of clones corrupted"); | |
3219 | error_found = true; | |
3220 | } | |
3221 | ||
d52f5295 | 3222 | if (analyzed && alias) |
9c8305f8 JH |
3223 | { |
3224 | bool ref_found = false; | |
3225 | int i; | |
3dafb85c | 3226 | ipa_ref *ref = NULL; |
9c8305f8 | 3227 | |
d52f5295 | 3228 | if (callees) |
9c8305f8 JH |
3229 | { |
3230 | error ("Alias has call edges"); | |
3231 | error_found = true; | |
3232 | } | |
d52f5295 | 3233 | for (i = 0; iterate_reference (i, ref); i++) |
d5e254e1 IE |
3234 | if (ref->use == IPA_REF_CHKP) |
3235 | ; | |
3236 | else if (ref->use != IPA_REF_ALIAS) | |
9c8305f8 JH |
3237 | { |
3238 | error ("Alias has non-alias reference"); | |
3239 | error_found = true; | |
3240 | } | |
3241 | else if (ref_found) | |
3242 | { | |
3243 | error ("Alias has more than one alias reference"); | |
3244 | error_found = true; | |
3245 | } | |
3246 | else | |
3247 | ref_found = true; | |
21c0a521 DM |
3248 | if (!ref_found) |
3249 | { | |
3250 | error ("Analyzed alias has no reference"); | |
3251 | error_found = true; | |
3252 | } | |
9c8305f8 | 3253 | } |
d5e254e1 IE |
3254 | |
3255 | /* Check instrumented version reference. */ | |
3256 | if (instrumented_version | |
3257 | && instrumented_version->instrumented_version != this) | |
3258 | { | |
3259 | error ("Instrumentation clone does not reference original node"); | |
3260 | error_found = true; | |
3261 | } | |
3262 | ||
3263 | /* Cannot have orig_decl for not instrumented nodes. */ | |
3264 | if (!instrumentation_clone && orig_decl) | |
3265 | { | |
3266 | error ("Not instrumented node has non-NULL original declaration"); | |
3267 | error_found = true; | |
3268 | } | |
3269 | ||
3270 | /* If original not instrumented node still exists then we may check | |
3271 | original declaration is set properly. */ | |
3272 | if (instrumented_version | |
3273 | && orig_decl | |
3274 | && orig_decl != instrumented_version->decl) | |
3275 | { | |
3276 | error ("Instrumented node has wrong original declaration"); | |
3277 | error_found = true; | |
3278 | } | |
3279 | ||
3280 | /* Check all nodes have chkp reference to their instrumented versions. */ | |
3281 | if (analyzed | |
3282 | && instrumented_version | |
3283 | && !instrumentation_clone) | |
3284 | { | |
3285 | bool ref_found = false; | |
3286 | int i; | |
3287 | struct ipa_ref *ref; | |
3288 | ||
3289 | for (i = 0; iterate_reference (i, ref); i++) | |
3290 | if (ref->use == IPA_REF_CHKP) | |
3291 | { | |
3292 | if (ref_found) | |
3293 | { | |
3294 | error ("Node has more than one chkp reference"); | |
3295 | error_found = true; | |
3296 | } | |
3297 | if (ref->referred != instrumented_version) | |
3298 | { | |
3299 | error ("Wrong node is referenced with chkp reference"); | |
3300 | error_found = true; | |
3301 | } | |
3302 | ref_found = true; | |
3303 | } | |
3304 | ||
3305 | if (!ref_found) | |
3306 | { | |
3307 | error ("Analyzed node has no reference to instrumented version"); | |
3308 | error_found = true; | |
3309 | } | |
3310 | } | |
3311 | ||
48de5d37 IE |
3312 | if (instrumentation_clone |
3313 | && DECL_BUILT_IN_CLASS (decl) == NOT_BUILT_IN) | |
3314 | { | |
3315 | tree name = DECL_ASSEMBLER_NAME (decl); | |
3316 | tree orig_name = DECL_ASSEMBLER_NAME (orig_decl); | |
3317 | ||
3318 | if (!IDENTIFIER_TRANSPARENT_ALIAS (name) | |
3319 | || TREE_CHAIN (name) != orig_name) | |
3320 | { | |
3321 | error ("Alias chain for instrumented node is broken"); | |
3322 | error_found = true; | |
3323 | } | |
3324 | } | |
3325 | ||
d52f5295 | 3326 | if (analyzed && thunk.thunk_p) |
9c8305f8 | 3327 | { |
d52f5295 | 3328 | if (!callees) |
9c8305f8 JH |
3329 | { |
3330 | error ("No edge out of thunk node"); | |
3331 | error_found = true; | |
3332 | } | |
d52f5295 | 3333 | else if (callees->next_callee) |
9c8305f8 JH |
3334 | { |
3335 | error ("More than one edge out of thunk node"); | |
3336 | error_found = true; | |
3337 | } | |
0b9004ed | 3338 | if (gimple_has_body_p (decl) && !global.inlined_to) |
9c8305f8 JH |
3339 | { |
3340 | error ("Thunk is not supposed to have body"); | |
3341 | error_found = true; | |
3342 | } | |
d5e254e1 IE |
3343 | if (thunk.add_pointer_bounds_args |
3344 | && !instrumented_version->semantically_equivalent_p (callees->callee)) | |
3345 | { | |
3346 | error ("Instrumentation thunk has wrong edge callee"); | |
3347 | error_found = true; | |
3348 | } | |
9c8305f8 | 3349 | } |
d52f5295 ML |
3350 | else if (analyzed && gimple_has_body_p (decl) |
3351 | && !TREE_ASM_WRITTEN (decl) | |
3352 | && (!DECL_EXTERNAL (decl) || global.inlined_to) | |
3353 | && !flag_wpa) | |
9c8305f8 JH |
3354 | { |
3355 | if (this_cfun->cfg) | |
3356 | { | |
355fe088 | 3357 | hash_set<gimple *> stmts; |
71cafea9 | 3358 | int i; |
3dafb85c | 3359 | ipa_ref *ref = NULL; |
71cafea9 | 3360 | |
9c8305f8 JH |
3361 | /* Reach the trees by walking over the CFG, and note the |
3362 | enclosing basic-blocks in the call edges. */ | |
3363 | FOR_EACH_BB_FN (this_block, this_cfun) | |
71cafea9 JH |
3364 | { |
3365 | for (gsi = gsi_start_phis (this_block); | |
3366 | !gsi_end_p (gsi); gsi_next (&gsi)) | |
6e2830c3 | 3367 | stmts.add (gsi_stmt (gsi)); |
71cafea9 JH |
3368 | for (gsi = gsi_start_bb (this_block); |
3369 | !gsi_end_p (gsi); | |
3370 | gsi_next (&gsi)) | |
3371 | { | |
355fe088 | 3372 | gimple *stmt = gsi_stmt (gsi); |
6e2830c3 | 3373 | stmts.add (stmt); |
71cafea9 JH |
3374 | if (is_gimple_call (stmt)) |
3375 | { | |
3dafb85c | 3376 | cgraph_edge *e = get_edge (stmt); |
71cafea9 JH |
3377 | tree decl = gimple_call_fndecl (stmt); |
3378 | if (e) | |
3379 | { | |
3380 | if (e->aux) | |
3381 | { | |
3382 | error ("shared call_stmt:"); | |
3383 | cgraph_debug_gimple_stmt (this_cfun, stmt); | |
3384 | error_found = true; | |
3385 | } | |
3386 | if (!e->indirect_unknown_callee) | |
3387 | { | |
90988f77 | 3388 | if (e->verify_corresponds_to_fndecl (decl)) |
71cafea9 JH |
3389 | { |
3390 | error ("edge points to wrong declaration:"); | |
67348ccc | 3391 | debug_tree (e->callee->decl); |
71cafea9 JH |
3392 | fprintf (stderr," Instead of:"); |
3393 | debug_tree (decl); | |
3394 | error_found = true; | |
3395 | } | |
3396 | } | |
3397 | else if (decl) | |
3398 | { | |
3399 | error ("an indirect edge with unknown callee " | |
3400 | "corresponding to a call_stmt with " | |
3401 | "a known declaration:"); | |
3402 | error_found = true; | |
3403 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); | |
3404 | } | |
3405 | e->aux = (void *)1; | |
3406 | } | |
3407 | else if (decl) | |
3408 | { | |
3409 | error ("missing callgraph edge for call stmt:"); | |
3410 | cgraph_debug_gimple_stmt (this_cfun, stmt); | |
3411 | error_found = true; | |
3412 | } | |
3413 | } | |
3414 | } | |
9c8305f8 | 3415 | } |
d52f5295 | 3416 | for (i = 0; iterate_reference (i, ref); i++) |
6e2830c3 | 3417 | if (ref->stmt && !stmts.contains (ref->stmt)) |
71cafea9 JH |
3418 | { |
3419 | error ("reference to dead statement"); | |
3420 | cgraph_debug_gimple_stmt (this_cfun, ref->stmt); | |
3421 | error_found = true; | |
3422 | } | |
9c8305f8 JH |
3423 | } |
3424 | else | |
3425 | /* No CFG available?! */ | |
3426 | gcc_unreachable (); | |
3427 | ||
d52f5295 | 3428 | for (e = callees; e; e = e->next_callee) |
9c8305f8 JH |
3429 | { |
3430 | if (!e->aux) | |
3431 | { | |
3432 | error ("edge %s->%s has no corresponding call_stmt", | |
fec39fa6 TS |
3433 | identifier_to_locale (e->caller->name ()), |
3434 | identifier_to_locale (e->callee->name ())); | |
9c8305f8 JH |
3435 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
3436 | error_found = true; | |
3437 | } | |
3438 | e->aux = 0; | |
3439 | } | |
d52f5295 | 3440 | for (e = indirect_calls; e; e = e->next_callee) |
9c8305f8 | 3441 | { |
042ae7d2 | 3442 | if (!e->aux && !e->speculative) |
9c8305f8 JH |
3443 | { |
3444 | error ("an indirect edge from %s has no corresponding call_stmt", | |
fec39fa6 | 3445 | identifier_to_locale (e->caller->name ())); |
9c8305f8 JH |
3446 | cgraph_debug_gimple_stmt (this_cfun, e->call_stmt); |
3447 | error_found = true; | |
3448 | } | |
3449 | e->aux = 0; | |
3450 | } | |
3451 | } | |
3452 | if (error_found) | |
3453 | { | |
d52f5295 | 3454 | dump (stderr); |
9c8305f8 JH |
3455 | internal_error ("verify_cgraph_node failed"); |
3456 | } | |
3457 | timevar_pop (TV_CGRAPH_VERIFY); | |
3458 | } | |
3459 | ||
3460 | /* Verify whole cgraph structure. */ | |
3461 | DEBUG_FUNCTION void | |
d52f5295 | 3462 | cgraph_node::verify_cgraph_nodes (void) |
9c8305f8 | 3463 | { |
3dafb85c | 3464 | cgraph_node *node; |
9c8305f8 JH |
3465 | |
3466 | if (seen_error ()) | |
3467 | return; | |
3468 | ||
3469 | FOR_EACH_FUNCTION (node) | |
d52f5295 | 3470 | node->verify (); |
9c8305f8 | 3471 | } |
48f4a6fa | 3472 | |
d52f5295 | 3473 | /* Walk the alias chain to return the function cgraph_node is alias of. |
6cbde2e3 | 3474 | Walk through thunks, too. |
f13fe18b JH |
3475 | When AVAILABILITY is non-NULL, get minimal availability in the chain. |
3476 | When REF is non-NULL, assume that reference happens in symbol REF | |
3477 | when determining the availability. */ | |
e70670cf | 3478 | |
d52f5295 | 3479 | cgraph_node * |
f13fe18b JH |
3480 | cgraph_node::function_symbol (enum availability *availability, |
3481 | struct symtab_node *ref) | |
e70670cf | 3482 | { |
f13fe18b | 3483 | cgraph_node *node = ultimate_alias_target (availability, ref); |
d52f5295 | 3484 | |
6cbde2e3 | 3485 | while (node->thunk.thunk_p) |
e70670cf | 3486 | { |
f13fe18b | 3487 | ref = node; |
6cbde2e3 BE |
3488 | node = node->callees->callee; |
3489 | if (availability) | |
3490 | { | |
3491 | enum availability a; | |
f13fe18b | 3492 | a = node->get_availability (ref); |
6cbde2e3 BE |
3493 | if (a < *availability) |
3494 | *availability = a; | |
3495 | } | |
f13fe18b | 3496 | node = node->ultimate_alias_target (availability, ref); |
6cbde2e3 BE |
3497 | } |
3498 | return node; | |
3499 | } | |
3500 | ||
3501 | /* Walk the alias chain to return the function cgraph_node is alias of. | |
3502 | Walk through non virtual thunks, too. Thus we return either a function | |
3503 | or a virtual thunk node. | |
f13fe18b JH |
3504 | When AVAILABILITY is non-NULL, get minimal availability in the chain. |
3505 | When REF is non-NULL, assume that reference happens in symbol REF | |
3506 | when determining the availability. */ | |
6cbde2e3 BE |
3507 | |
3508 | cgraph_node * | |
3509 | cgraph_node::function_or_virtual_thunk_symbol | |
f13fe18b JH |
3510 | (enum availability *availability, |
3511 | struct symtab_node *ref) | |
6cbde2e3 | 3512 | { |
f13fe18b | 3513 | cgraph_node *node = ultimate_alias_target (availability, ref); |
6cbde2e3 BE |
3514 | |
3515 | while (node->thunk.thunk_p && !node->thunk.virtual_offset_p) | |
3516 | { | |
f13fe18b | 3517 | ref = node; |
6cbde2e3 BE |
3518 | node = node->callees->callee; |
3519 | if (availability) | |
e70670cf | 3520 | { |
6cbde2e3 | 3521 | enum availability a; |
f13fe18b | 3522 | a = node->get_availability (ref); |
6cbde2e3 BE |
3523 | if (a < *availability) |
3524 | *availability = a; | |
e70670cf | 3525 | } |
f13fe18b | 3526 | node = node->ultimate_alias_target (availability, ref); |
6cbde2e3 | 3527 | } |
e70670cf JH |
3528 | return node; |
3529 | } | |
3530 | ||
d52f5295 ML |
3531 | /* When doing LTO, read cgraph_node's body from disk if it is not already |
3532 | present. */ | |
a2e2a668 JH |
3533 | |
3534 | bool | |
70486010 | 3535 | cgraph_node::get_untransformed_body (void) |
a2e2a668 | 3536 | { |
3dafb85c | 3537 | lto_file_decl_data *file_data; |
a2e2a668 JH |
3538 | const char *data, *name; |
3539 | size_t len; | |
d52f5295 | 3540 | tree decl = this->decl; |
a2e2a668 | 3541 | |
e9191ad3 JH |
3542 | /* Check if body is already there. Either we have gimple body or |
3543 | the function is thunk and in that case we set DECL_ARGUMENTS. */ | |
3544 | if (DECL_ARGUMENTS (decl) || gimple_has_body_p (decl)) | |
a2e2a668 JH |
3545 | return false; |
3546 | ||
e9191ad3 | 3547 | gcc_assert (in_lto_p && !DECL_RESULT (decl)); |
a2e2a668 | 3548 | |
917dd9bf JH |
3549 | timevar_push (TV_IPA_LTO_GIMPLE_IN); |
3550 | ||
d52f5295 | 3551 | file_data = lto_file_data; |
a2e2a668 JH |
3552 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
3553 | ||
3554 | /* We may have renamed the declaration, e.g., a static function. */ | |
3555 | name = lto_get_decl_name_mapping (file_data, name); | |
ca834876 JH |
3556 | struct lto_in_decl_state *decl_state |
3557 | = lto_get_function_in_decl_state (file_data, decl); | |
a2e2a668 JH |
3558 | |
3559 | data = lto_get_section_data (file_data, LTO_section_function_body, | |
ca834876 | 3560 | name, &len, decl_state->compressed); |
a2e2a668 | 3561 | if (!data) |
40fecdd6 | 3562 | fatal_error (input_location, "%s: section %s is missing", |
a2e2a668 JH |
3563 | file_data->file_name, |
3564 | name); | |
a2e2a668 JH |
3565 | |
3566 | gcc_assert (DECL_STRUCT_FUNCTION (decl) == NULL); | |
3567 | ||
d52f5295 | 3568 | lto_input_function_body (file_data, this, data); |
a2e2a668 JH |
3569 | lto_stats.num_function_bodies++; |
3570 | lto_free_section_data (file_data, LTO_section_function_body, name, | |
ca834876 | 3571 | data, len, decl_state->compressed); |
d52f5295 | 3572 | lto_free_function_in_decl_state_for_node (this); |
1c4db829 JH |
3573 | /* Keep lto file data so ipa-inline-analysis knows about cross module |
3574 | inlining. */ | |
917dd9bf JH |
3575 | |
3576 | timevar_pop (TV_IPA_LTO_GIMPLE_IN); | |
3577 | ||
a2e2a668 JH |
3578 | return true; |
3579 | } | |
3580 | ||
70486010 JH |
3581 | /* Prepare function body. When doing LTO, read cgraph_node's body from disk |
3582 | if it is not already present. When some IPA transformations are scheduled, | |
3583 | apply them. */ | |
3584 | ||
3585 | bool | |
3586 | cgraph_node::get_body (void) | |
3587 | { | |
3588 | bool updated; | |
3589 | ||
3590 | updated = get_untransformed_body (); | |
3591 | ||
3592 | /* Getting transformed body makes no sense for inline clones; | |
56aae4b7 | 3593 | we should never use this on real clones because they are materialized |
70486010 JH |
3594 | early. |
3595 | TODO: Materializing clones here will likely lead to smaller LTRANS | |
3596 | footprint. */ | |
3597 | gcc_assert (!global.inlined_to && !clone_of); | |
3598 | if (ipa_transforms_to_apply.exists ()) | |
3599 | { | |
3600 | opt_pass *saved_current_pass = current_pass; | |
3601 | FILE *saved_dump_file = dump_file; | |
5a15be97 | 3602 | const char *saved_dump_file_name = dump_file_name; |
70486010 | 3603 | int saved_dump_flags = dump_flags; |
5a15be97 | 3604 | dump_file_name = NULL; |
fa22501a | 3605 | dump_file = NULL; |
70486010 JH |
3606 | |
3607 | push_cfun (DECL_STRUCT_FUNCTION (decl)); | |
3608 | execute_all_ipa_transforms (); | |
3609 | cgraph_edge::rebuild_edges (); | |
3610 | free_dominance_info (CDI_DOMINATORS); | |
3611 | free_dominance_info (CDI_POST_DOMINATORS); | |
3612 | pop_cfun (); | |
3613 | updated = true; | |
3614 | ||
3615 | current_pass = saved_current_pass; | |
3616 | dump_file = saved_dump_file; | |
5a15be97 | 3617 | dump_file_name = saved_dump_file_name; |
70486010 JH |
3618 | dump_flags = saved_dump_flags; |
3619 | } | |
3620 | return updated; | |
3621 | } | |
3622 | ||
8ccda8bc EB |
3623 | /* Return the DECL_STRUCT_FUNCTION of the function. */ |
3624 | ||
3625 | struct function * | |
3626 | cgraph_node::get_fun (void) | |
3627 | { | |
3628 | cgraph_node *node = this; | |
3629 | struct function *fun = DECL_STRUCT_FUNCTION (node->decl); | |
3630 | ||
3631 | while (!fun && node->clone_of) | |
3632 | { | |
3633 | node = node->clone_of; | |
3634 | fun = DECL_STRUCT_FUNCTION (node->decl); | |
3635 | } | |
3636 | ||
3637 | return fun; | |
3638 | } | |
3639 | ||
4484a35a AM |
3640 | /* Verify if the type of the argument matches that of the function |
3641 | declaration. If we cannot verify this or there is a mismatch, | |
3642 | return false. */ | |
3643 | ||
3644 | static bool | |
355fe088 | 3645 | gimple_check_call_args (gimple *stmt, tree fndecl, bool args_count_match) |
4484a35a AM |
3646 | { |
3647 | tree parms, p; | |
3648 | unsigned int i, nargs; | |
3649 | ||
3650 | /* Calls to internal functions always match their signature. */ | |
3651 | if (gimple_call_internal_p (stmt)) | |
3652 | return true; | |
3653 | ||
3654 | nargs = gimple_call_num_args (stmt); | |
3655 | ||
3656 | /* Get argument types for verification. */ | |
3657 | if (fndecl) | |
3658 | parms = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); | |
3659 | else | |
3660 | parms = TYPE_ARG_TYPES (gimple_call_fntype (stmt)); | |
3661 | ||
3662 | /* Verify if the type of the argument matches that of the function | |
3663 | declaration. If we cannot verify this or there is a mismatch, | |
3664 | return false. */ | |
3665 | if (fndecl && DECL_ARGUMENTS (fndecl)) | |
3666 | { | |
3667 | for (i = 0, p = DECL_ARGUMENTS (fndecl); | |
3668 | i < nargs; | |
3669 | i++, p = DECL_CHAIN (p)) | |
3670 | { | |
3671 | tree arg; | |
3672 | /* We cannot distinguish a varargs function from the case | |
3673 | of excess parameters, still deferring the inlining decision | |
3674 | to the callee is possible. */ | |
3675 | if (!p) | |
3676 | break; | |
3677 | arg = gimple_call_arg (stmt, i); | |
3678 | if (p == error_mark_node | |
5147d10a | 3679 | || DECL_ARG_TYPE (p) == error_mark_node |
4484a35a AM |
3680 | || arg == error_mark_node |
3681 | || (!types_compatible_p (DECL_ARG_TYPE (p), TREE_TYPE (arg)) | |
3682 | && !fold_convertible_p (DECL_ARG_TYPE (p), arg))) | |
3683 | return false; | |
3684 | } | |
3685 | if (args_count_match && p) | |
3686 | return false; | |
3687 | } | |
3688 | else if (parms) | |
3689 | { | |
3690 | for (i = 0, p = parms; i < nargs; i++, p = TREE_CHAIN (p)) | |
3691 | { | |
3692 | tree arg; | |
3693 | /* If this is a varargs function defer inlining decision | |
3694 | to callee. */ | |
3695 | if (!p) | |
3696 | break; | |
3697 | arg = gimple_call_arg (stmt, i); | |
3698 | if (TREE_VALUE (p) == error_mark_node | |
3699 | || arg == error_mark_node | |
3700 | || TREE_CODE (TREE_VALUE (p)) == VOID_TYPE | |
3701 | || (!types_compatible_p (TREE_VALUE (p), TREE_TYPE (arg)) | |
3702 | && !fold_convertible_p (TREE_VALUE (p), arg))) | |
3703 | return false; | |
3704 | } | |
3705 | } | |
3706 | else | |
3707 | { | |
3708 | if (nargs != 0) | |
3709 | return false; | |
3710 | } | |
3711 | return true; | |
3712 | } | |
3713 | ||
3714 | /* Verify if the type of the argument and lhs of CALL_STMT matches | |
3715 | that of the function declaration CALLEE. If ARGS_COUNT_MATCH is | |
3716 | true, the arg count needs to be the same. | |
3717 | If we cannot verify this or there is a mismatch, return false. */ | |
3718 | ||
3719 | bool | |
355fe088 | 3720 | gimple_check_call_matching_types (gimple *call_stmt, tree callee, |
4484a35a AM |
3721 | bool args_count_match) |
3722 | { | |
3723 | tree lhs; | |
3724 | ||
3725 | if ((DECL_RESULT (callee) | |
3726 | && !DECL_BY_REFERENCE (DECL_RESULT (callee)) | |
3727 | && (lhs = gimple_call_lhs (call_stmt)) != NULL_TREE | |
3728 | && !useless_type_conversion_p (TREE_TYPE (DECL_RESULT (callee)), | |
3729 | TREE_TYPE (lhs)) | |
3730 | && !fold_convertible_p (TREE_TYPE (DECL_RESULT (callee)), lhs)) | |
3731 | || !gimple_check_call_args (call_stmt, callee, args_count_match)) | |
3732 | return false; | |
3733 | return true; | |
3734 | } | |
3735 | ||
3edf64aa DM |
3736 | /* Reset all state within cgraph.c so that we can rerun the compiler |
3737 | within the same process. For use by toplev::finalize. */ | |
3738 | ||
3739 | void | |
3740 | cgraph_c_finalize (void) | |
3741 | { | |
3742 | symtab = NULL; | |
3743 | ||
3744 | x_cgraph_nodes_queue = NULL; | |
3745 | ||
3746 | cgraph_fnver_htab = NULL; | |
3747 | version_info_node = NULL; | |
3748 | } | |
3749 | ||
31de7606 JH |
3750 | /* A wroker for call_for_symbol_and_aliases. */ |
3751 | ||
3752 | bool | |
3753 | cgraph_node::call_for_symbol_and_aliases_1 (bool (*callback) (cgraph_node *, | |
3754 | void *), | |
3755 | void *data, | |
3756 | bool include_overwritable) | |
3757 | { | |
3758 | ipa_ref *ref; | |
3759 | FOR_EACH_ALIAS (this, ref) | |
3760 | { | |
3761 | cgraph_node *alias = dyn_cast <cgraph_node *> (ref->referring); | |
3762 | if (include_overwritable | |
3763 | || alias->get_availability () > AVAIL_INTERPOSABLE) | |
3764 | if (alias->call_for_symbol_and_aliases (callback, data, | |
3765 | include_overwritable)) | |
3766 | return true; | |
3767 | } | |
3768 | return false; | |
3769 | } | |
17d1bf76 ML |
3770 | |
3771 | /* Return true if NODE has thunk. */ | |
3772 | ||
3773 | bool | |
3774 | cgraph_node::has_thunk_p (cgraph_node *node, void *) | |
3775 | { | |
3776 | for (cgraph_edge *e = node->callers; e; e = e->next_caller) | |
3777 | if (e->caller->thunk.thunk_p) | |
3778 | return true; | |
3779 | return false; | |
3780 | } | |
3781 | ||
988d1653 | 3782 | #include "gt-cgraph.h" |