Mercurial > hg > CbC > CbC_gcc
annotate gcc/cgraph.c @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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date | Mon, 24 May 2010 12:47:05 +0900 |
parents | 77e2b8dfacca |
children | f6334be47118 |
rev | line source |
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0 | 1 /* Callgraph handling code. |
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2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
0 | 3 Free Software Foundation, Inc. |
4 Contributed by Jan Hubicka | |
5 | |
6 This file is part of GCC. | |
7 | |
8 GCC is free software; you can redistribute it and/or modify it under | |
9 the terms of the GNU General Public License as published by the Free | |
10 Software Foundation; either version 3, or (at your option) any later | |
11 version. | |
12 | |
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 You should have received a copy of the GNU General Public License | |
19 along with GCC; see the file COPYING3. If not see | |
20 <http://www.gnu.org/licenses/>. */ | |
21 | |
22 /* This file contains basic routines manipulating call graph | |
23 | |
24 The callgraph: | |
25 | |
26 The call-graph is data structure designed for intra-procedural optimization | |
27 but it is also used in non-unit-at-a-time compilation to allow easier code | |
28 sharing. | |
29 | |
30 The call-graph consist of nodes and edges represented via linked lists. | |
31 Each function (external or not) corresponds to the unique node. | |
32 | |
33 The mapping from declarations to call-graph nodes is done using hash table | |
34 based on DECL_UID. The call-graph nodes are created lazily using | |
35 cgraph_node function when called for unknown declaration. | |
36 | |
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37 The callgraph at the moment does not represent all indirect calls or calls |
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38 from other compilation units. Flag NEEDED is set for each node that may be |
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39 accessed in such an invisible way and it shall be considered an entry point |
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40 to the callgraph. |
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41 |
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42 On the other hand, the callgraph currently does contain some edges for |
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43 indirect calls with unknown callees which can be accessed through |
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44 indirect_calls field of a node. It should be noted however that at the |
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45 moment only calls which are potential candidates for indirect inlining are |
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46 added there. |
0 | 47 |
48 Interprocedural information: | |
49 | |
50 Callgraph is place to store data needed for interprocedural optimization. | |
51 All data structures are divided into three components: local_info that | |
52 is produced while analyzing the function, global_info that is result | |
53 of global walking of the callgraph on the end of compilation and | |
54 rtl_info used by RTL backend to propagate data from already compiled | |
55 functions to their callers. | |
56 | |
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57 Moreover, each node has a uid which can be used to keep information in |
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58 on-the-side arrays. UIDs are reused and therefore reasonably dense. |
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59 |
0 | 60 Inlining plans: |
61 | |
62 The function inlining information is decided in advance and maintained | |
63 in the callgraph as so called inline plan. | |
64 For each inlined call, the callee's node is cloned to represent the | |
65 new function copy produced by inliner. | |
66 Each inlined call gets a unique corresponding clone node of the callee | |
67 and the data structure is updated while inlining is performed, so | |
68 the clones are eliminated and their callee edges redirected to the | |
69 caller. | |
70 | |
71 Each edge has "inline_failed" field. When the field is set to NULL, | |
72 the call will be inlined. When it is non-NULL it contains a reason | |
73 why inlining wasn't performed. */ | |
74 | |
75 #include "config.h" | |
76 #include "system.h" | |
77 #include "coretypes.h" | |
78 #include "tm.h" | |
79 #include "tree.h" | |
80 #include "tree-inline.h" | |
81 #include "langhooks.h" | |
82 #include "hashtab.h" | |
83 #include "toplev.h" | |
84 #include "flags.h" | |
85 #include "ggc.h" | |
86 #include "debug.h" | |
87 #include "target.h" | |
88 #include "basic-block.h" | |
89 #include "cgraph.h" | |
90 #include "output.h" | |
91 #include "intl.h" | |
92 #include "gimple.h" | |
93 #include "tree-dump.h" | |
94 #include "tree-flow.h" | |
95 #include "value-prof.h" | |
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96 #include "except.h" |
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97 #include "diagnostic.h" |
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98 #include "rtl.h" |
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99 #include "ipa-utils.h" |
0 | 100 |
101 static void cgraph_node_remove_callers (struct cgraph_node *node); | |
102 static inline void cgraph_edge_remove_caller (struct cgraph_edge *e); | |
103 static inline void cgraph_edge_remove_callee (struct cgraph_edge *e); | |
104 | |
105 /* Hash table used to convert declarations into nodes. */ | |
106 static GTY((param_is (struct cgraph_node))) htab_t cgraph_hash; | |
107 /* Hash table used to convert assembler names into nodes. */ | |
108 static GTY((param_is (struct cgraph_node))) htab_t assembler_name_hash; | |
109 | |
110 /* The linked list of cgraph nodes. */ | |
111 struct cgraph_node *cgraph_nodes; | |
112 | |
113 /* Queue of cgraph nodes scheduled to be lowered. */ | |
114 struct cgraph_node *cgraph_nodes_queue; | |
115 | |
116 /* Queue of cgraph nodes scheduled to be added into cgraph. This is a | |
117 secondary queue used during optimization to accommodate passes that | |
118 may generate new functions that need to be optimized and expanded. */ | |
119 struct cgraph_node *cgraph_new_nodes; | |
120 | |
121 /* Number of nodes in existence. */ | |
122 int cgraph_n_nodes; | |
123 | |
124 /* Maximal uid used in cgraph nodes. */ | |
125 int cgraph_max_uid; | |
126 | |
127 /* Maximal uid used in cgraph edges. */ | |
128 int cgraph_edge_max_uid; | |
129 | |
130 /* Maximal pid used for profiling */ | |
131 int cgraph_max_pid; | |
132 | |
133 /* Set when whole unit has been analyzed so we can access global info. */ | |
134 bool cgraph_global_info_ready = false; | |
135 | |
136 /* What state callgraph is in right now. */ | |
137 enum cgraph_state cgraph_state = CGRAPH_STATE_CONSTRUCTION; | |
138 | |
139 /* Set when the cgraph is fully build and the basic flags are computed. */ | |
140 bool cgraph_function_flags_ready = false; | |
141 | |
142 /* Linked list of cgraph asm nodes. */ | |
143 struct cgraph_asm_node *cgraph_asm_nodes; | |
144 | |
145 /* Last node in cgraph_asm_nodes. */ | |
146 static GTY(()) struct cgraph_asm_node *cgraph_asm_last_node; | |
147 | |
148 /* The order index of the next cgraph node to be created. This is | |
149 used so that we can sort the cgraph nodes in order by when we saw | |
150 them, to support -fno-toplevel-reorder. */ | |
151 int cgraph_order; | |
152 | |
153 /* List of hooks trigerred on cgraph_edge events. */ | |
154 struct cgraph_edge_hook_list { | |
155 cgraph_edge_hook hook; | |
156 void *data; | |
157 struct cgraph_edge_hook_list *next; | |
158 }; | |
159 | |
160 /* List of hooks trigerred on cgraph_node events. */ | |
161 struct cgraph_node_hook_list { | |
162 cgraph_node_hook hook; | |
163 void *data; | |
164 struct cgraph_node_hook_list *next; | |
165 }; | |
166 | |
167 /* List of hooks trigerred on events involving two cgraph_edges. */ | |
168 struct cgraph_2edge_hook_list { | |
169 cgraph_2edge_hook hook; | |
170 void *data; | |
171 struct cgraph_2edge_hook_list *next; | |
172 }; | |
173 | |
174 /* List of hooks trigerred on events involving two cgraph_nodes. */ | |
175 struct cgraph_2node_hook_list { | |
176 cgraph_2node_hook hook; | |
177 void *data; | |
178 struct cgraph_2node_hook_list *next; | |
179 }; | |
180 | |
181 /* List of hooks triggered when an edge is removed. */ | |
182 struct cgraph_edge_hook_list *first_cgraph_edge_removal_hook; | |
183 /* List of hooks triggered when a node is removed. */ | |
184 struct cgraph_node_hook_list *first_cgraph_node_removal_hook; | |
185 /* List of hooks triggered when an edge is duplicated. */ | |
186 struct cgraph_2edge_hook_list *first_cgraph_edge_duplicated_hook; | |
187 /* List of hooks triggered when a node is duplicated. */ | |
188 struct cgraph_2node_hook_list *first_cgraph_node_duplicated_hook; | |
189 /* List of hooks triggered when an function is inserted. */ | |
190 struct cgraph_node_hook_list *first_cgraph_function_insertion_hook; | |
191 | |
192 /* Head of a linked list of unused (freed) call graph nodes. | |
193 Do not GTY((delete)) this list so UIDs gets reliably recycled. */ | |
194 static GTY(()) struct cgraph_node *free_nodes; | |
195 /* Head of a linked list of unused (freed) call graph edges. | |
196 Do not GTY((delete)) this list so UIDs gets reliably recycled. */ | |
197 static GTY(()) struct cgraph_edge *free_edges; | |
198 | |
199 /* Macros to access the next item in the list of free cgraph nodes and | |
200 edges. */ | |
201 #define NEXT_FREE_NODE(NODE) (NODE)->next | |
202 #define NEXT_FREE_EDGE(EDGE) (EDGE)->prev_caller | |
203 | |
204 /* Register HOOK to be called with DATA on each removed edge. */ | |
205 struct cgraph_edge_hook_list * | |
206 cgraph_add_edge_removal_hook (cgraph_edge_hook hook, void *data) | |
207 { | |
208 struct cgraph_edge_hook_list *entry; | |
209 struct cgraph_edge_hook_list **ptr = &first_cgraph_edge_removal_hook; | |
210 | |
211 entry = (struct cgraph_edge_hook_list *) xmalloc (sizeof (*entry)); | |
212 entry->hook = hook; | |
213 entry->data = data; | |
214 entry->next = NULL; | |
215 while (*ptr) | |
216 ptr = &(*ptr)->next; | |
217 *ptr = entry; | |
218 return entry; | |
219 } | |
220 | |
221 /* Remove ENTRY from the list of hooks called on removing edges. */ | |
222 void | |
223 cgraph_remove_edge_removal_hook (struct cgraph_edge_hook_list *entry) | |
224 { | |
225 struct cgraph_edge_hook_list **ptr = &first_cgraph_edge_removal_hook; | |
226 | |
227 while (*ptr != entry) | |
228 ptr = &(*ptr)->next; | |
229 *ptr = entry->next; | |
230 free (entry); | |
231 } | |
232 | |
233 /* Call all edge removal hooks. */ | |
234 static void | |
235 cgraph_call_edge_removal_hooks (struct cgraph_edge *e) | |
236 { | |
237 struct cgraph_edge_hook_list *entry = first_cgraph_edge_removal_hook; | |
238 while (entry) | |
239 { | |
240 entry->hook (e, entry->data); | |
241 entry = entry->next; | |
242 } | |
243 } | |
244 | |
245 /* Register HOOK to be called with DATA on each removed node. */ | |
246 struct cgraph_node_hook_list * | |
247 cgraph_add_node_removal_hook (cgraph_node_hook hook, void *data) | |
248 { | |
249 struct cgraph_node_hook_list *entry; | |
250 struct cgraph_node_hook_list **ptr = &first_cgraph_node_removal_hook; | |
251 | |
252 entry = (struct cgraph_node_hook_list *) xmalloc (sizeof (*entry)); | |
253 entry->hook = hook; | |
254 entry->data = data; | |
255 entry->next = NULL; | |
256 while (*ptr) | |
257 ptr = &(*ptr)->next; | |
258 *ptr = entry; | |
259 return entry; | |
260 } | |
261 | |
262 /* Remove ENTRY from the list of hooks called on removing nodes. */ | |
263 void | |
264 cgraph_remove_node_removal_hook (struct cgraph_node_hook_list *entry) | |
265 { | |
266 struct cgraph_node_hook_list **ptr = &first_cgraph_node_removal_hook; | |
267 | |
268 while (*ptr != entry) | |
269 ptr = &(*ptr)->next; | |
270 *ptr = entry->next; | |
271 free (entry); | |
272 } | |
273 | |
274 /* Call all node removal hooks. */ | |
275 static void | |
276 cgraph_call_node_removal_hooks (struct cgraph_node *node) | |
277 { | |
278 struct cgraph_node_hook_list *entry = first_cgraph_node_removal_hook; | |
279 while (entry) | |
280 { | |
281 entry->hook (node, entry->data); | |
282 entry = entry->next; | |
283 } | |
284 } | |
285 | |
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286 /* Register HOOK to be called with DATA on each inserted node. */ |
0 | 287 struct cgraph_node_hook_list * |
288 cgraph_add_function_insertion_hook (cgraph_node_hook hook, void *data) | |
289 { | |
290 struct cgraph_node_hook_list *entry; | |
291 struct cgraph_node_hook_list **ptr = &first_cgraph_function_insertion_hook; | |
292 | |
293 entry = (struct cgraph_node_hook_list *) xmalloc (sizeof (*entry)); | |
294 entry->hook = hook; | |
295 entry->data = data; | |
296 entry->next = NULL; | |
297 while (*ptr) | |
298 ptr = &(*ptr)->next; | |
299 *ptr = entry; | |
300 return entry; | |
301 } | |
302 | |
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303 /* Remove ENTRY from the list of hooks called on inserted nodes. */ |
0 | 304 void |
305 cgraph_remove_function_insertion_hook (struct cgraph_node_hook_list *entry) | |
306 { | |
307 struct cgraph_node_hook_list **ptr = &first_cgraph_function_insertion_hook; | |
308 | |
309 while (*ptr != entry) | |
310 ptr = &(*ptr)->next; | |
311 *ptr = entry->next; | |
312 free (entry); | |
313 } | |
314 | |
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315 /* Call all node insertion hooks. */ |
0 | 316 void |
317 cgraph_call_function_insertion_hooks (struct cgraph_node *node) | |
318 { | |
319 struct cgraph_node_hook_list *entry = first_cgraph_function_insertion_hook; | |
320 while (entry) | |
321 { | |
322 entry->hook (node, entry->data); | |
323 entry = entry->next; | |
324 } | |
325 } | |
326 | |
327 /* Register HOOK to be called with DATA on each duplicated edge. */ | |
328 struct cgraph_2edge_hook_list * | |
329 cgraph_add_edge_duplication_hook (cgraph_2edge_hook hook, void *data) | |
330 { | |
331 struct cgraph_2edge_hook_list *entry; | |
332 struct cgraph_2edge_hook_list **ptr = &first_cgraph_edge_duplicated_hook; | |
333 | |
334 entry = (struct cgraph_2edge_hook_list *) xmalloc (sizeof (*entry)); | |
335 entry->hook = hook; | |
336 entry->data = data; | |
337 entry->next = NULL; | |
338 while (*ptr) | |
339 ptr = &(*ptr)->next; | |
340 *ptr = entry; | |
341 return entry; | |
342 } | |
343 | |
344 /* Remove ENTRY from the list of hooks called on duplicating edges. */ | |
345 void | |
346 cgraph_remove_edge_duplication_hook (struct cgraph_2edge_hook_list *entry) | |
347 { | |
348 struct cgraph_2edge_hook_list **ptr = &first_cgraph_edge_duplicated_hook; | |
349 | |
350 while (*ptr != entry) | |
351 ptr = &(*ptr)->next; | |
352 *ptr = entry->next; | |
353 free (entry); | |
354 } | |
355 | |
356 /* Call all edge duplication hooks. */ | |
357 static void | |
358 cgraph_call_edge_duplication_hooks (struct cgraph_edge *cs1, | |
359 struct cgraph_edge *cs2) | |
360 { | |
361 struct cgraph_2edge_hook_list *entry = first_cgraph_edge_duplicated_hook; | |
362 while (entry) | |
363 { | |
364 entry->hook (cs1, cs2, entry->data); | |
365 entry = entry->next; | |
366 } | |
367 } | |
368 | |
369 /* Register HOOK to be called with DATA on each duplicated node. */ | |
370 struct cgraph_2node_hook_list * | |
371 cgraph_add_node_duplication_hook (cgraph_2node_hook hook, void *data) | |
372 { | |
373 struct cgraph_2node_hook_list *entry; | |
374 struct cgraph_2node_hook_list **ptr = &first_cgraph_node_duplicated_hook; | |
375 | |
376 entry = (struct cgraph_2node_hook_list *) xmalloc (sizeof (*entry)); | |
377 entry->hook = hook; | |
378 entry->data = data; | |
379 entry->next = NULL; | |
380 while (*ptr) | |
381 ptr = &(*ptr)->next; | |
382 *ptr = entry; | |
383 return entry; | |
384 } | |
385 | |
386 /* Remove ENTRY from the list of hooks called on duplicating nodes. */ | |
387 void | |
388 cgraph_remove_node_duplication_hook (struct cgraph_2node_hook_list *entry) | |
389 { | |
390 struct cgraph_2node_hook_list **ptr = &first_cgraph_node_duplicated_hook; | |
391 | |
392 while (*ptr != entry) | |
393 ptr = &(*ptr)->next; | |
394 *ptr = entry->next; | |
395 free (entry); | |
396 } | |
397 | |
398 /* Call all node duplication hooks. */ | |
399 static void | |
400 cgraph_call_node_duplication_hooks (struct cgraph_node *node1, | |
401 struct cgraph_node *node2) | |
402 { | |
403 struct cgraph_2node_hook_list *entry = first_cgraph_node_duplicated_hook; | |
404 while (entry) | |
405 { | |
406 entry->hook (node1, node2, entry->data); | |
407 entry = entry->next; | |
408 } | |
409 } | |
410 | |
411 /* Returns a hash code for P. */ | |
412 | |
413 static hashval_t | |
414 hash_node (const void *p) | |
415 { | |
416 const struct cgraph_node *n = (const struct cgraph_node *) p; | |
417 return (hashval_t) DECL_UID (n->decl); | |
418 } | |
419 | |
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420 |
0 | 421 /* Returns nonzero if P1 and P2 are equal. */ |
422 | |
423 static int | |
424 eq_node (const void *p1, const void *p2) | |
425 { | |
426 const struct cgraph_node *n1 = (const struct cgraph_node *) p1; | |
427 const struct cgraph_node *n2 = (const struct cgraph_node *) p2; | |
428 return DECL_UID (n1->decl) == DECL_UID (n2->decl); | |
429 } | |
430 | |
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431 /* Allocate new callgraph node. */ |
0 | 432 |
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433 static inline struct cgraph_node * |
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434 cgraph_allocate_node (void) |
0 | 435 { |
436 struct cgraph_node *node; | |
437 | |
438 if (free_nodes) | |
439 { | |
440 node = free_nodes; | |
441 free_nodes = NEXT_FREE_NODE (node); | |
442 } | |
443 else | |
444 { | |
445 node = GGC_CNEW (struct cgraph_node); | |
446 node->uid = cgraph_max_uid++; | |
447 } | |
448 | |
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449 return node; |
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450 } |
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451 |
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452 /* Allocate new callgraph node and insert it into basic data structures. */ |
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453 |
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454 static struct cgraph_node * |
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455 cgraph_create_node (void) |
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456 { |
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457 struct cgraph_node *node = cgraph_allocate_node (); |
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458 |
0 | 459 node->next = cgraph_nodes; |
460 node->pid = -1; | |
461 node->order = cgraph_order++; | |
462 if (cgraph_nodes) | |
463 cgraph_nodes->previous = node; | |
464 node->previous = NULL; | |
465 node->global.estimated_growth = INT_MIN; | |
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466 node->frequency = NODE_FREQUENCY_NORMAL; |
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467 ipa_empty_ref_list (&node->ref_list); |
0 | 468 cgraph_nodes = node; |
469 cgraph_n_nodes++; | |
470 return node; | |
471 } | |
472 | |
473 /* Return cgraph node assigned to DECL. Create new one when needed. */ | |
474 | |
475 struct cgraph_node * | |
476 cgraph_node (tree decl) | |
477 { | |
478 struct cgraph_node key, *node, **slot; | |
479 | |
480 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
481 | |
482 if (!cgraph_hash) | |
483 cgraph_hash = htab_create_ggc (10, hash_node, eq_node, NULL); | |
484 | |
485 key.decl = decl; | |
486 | |
487 slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, &key, INSERT); | |
488 | |
489 if (*slot) | |
490 { | |
491 node = *slot; | |
55
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492 if (node->same_body_alias) |
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493 node = node->same_body; |
0 | 494 return node; |
495 } | |
496 | |
497 node = cgraph_create_node (); | |
498 node->decl = decl; | |
499 *slot = node; | |
500 if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL) | |
501 { | |
502 node->origin = cgraph_node (DECL_CONTEXT (decl)); | |
503 node->next_nested = node->origin->nested; | |
504 node->origin->nested = node; | |
505 } | |
506 if (assembler_name_hash) | |
507 { | |
508 void **aslot; | |
509 tree name = DECL_ASSEMBLER_NAME (decl); | |
510 | |
511 aslot = htab_find_slot_with_hash (assembler_name_hash, name, | |
512 decl_assembler_name_hash (name), | |
513 INSERT); | |
514 /* We can have multiple declarations with same assembler name. For C++ | |
515 it is __builtin_strlen and strlen, for instance. Do we need to | |
516 record them all? Original implementation marked just first one | |
517 so lets hope for the best. */ | |
518 if (*aslot == NULL) | |
519 *aslot = node; | |
520 } | |
521 return node; | |
522 } | |
523 | |
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524 /* Mark ALIAS as an alias to DECL. */ |
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525 |
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526 static struct cgraph_node * |
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527 cgraph_same_body_alias_1 (tree alias, tree decl) |
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528 { |
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529 struct cgraph_node key, *alias_node, *decl_node, **slot; |
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530 |
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531 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
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532 gcc_assert (TREE_CODE (alias) == FUNCTION_DECL); |
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533 decl_node = cgraph_node (decl); |
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534 |
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535 key.decl = alias; |
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536 |
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537 slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, &key, INSERT); |
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538 |
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539 /* If the cgraph_node has been already created, fail. */ |
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540 if (*slot) |
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541 return NULL; |
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542 |
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543 alias_node = cgraph_allocate_node (); |
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544 alias_node->decl = alias; |
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545 alias_node->same_body_alias = 1; |
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546 alias_node->same_body = decl_node; |
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547 alias_node->previous = NULL; |
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548 if (decl_node->same_body) |
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549 decl_node->same_body->previous = alias_node; |
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550 alias_node->next = decl_node->same_body; |
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551 alias_node->thunk.alias = decl; |
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552 decl_node->same_body = alias_node; |
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553 *slot = alias_node; |
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554 return alias_node; |
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555 } |
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556 |
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557 /* Attempt to mark ALIAS as an alias to DECL. Return TRUE if successful. |
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558 Same body aliases are output whenever the body of DECL is output, |
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559 and cgraph_node (ALIAS) transparently returns cgraph_node (DECL). */ |
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560 |
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561 bool |
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562 cgraph_same_body_alias (tree alias, tree decl) |
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563 { |
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564 #ifndef ASM_OUTPUT_DEF |
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565 /* If aliases aren't supported by the assembler, fail. */ |
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566 return false; |
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567 #endif |
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568 |
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569 /*gcc_assert (!assembler_name_hash);*/ |
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570 |
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571 return cgraph_same_body_alias_1 (alias, decl) != NULL; |
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572 } |
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573 |
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574 void |
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575 cgraph_add_thunk (tree alias, tree decl, bool this_adjusting, |
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576 HOST_WIDE_INT fixed_offset, HOST_WIDE_INT virtual_value, |
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577 tree virtual_offset, |
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578 tree real_alias) |
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579 { |
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580 struct cgraph_node *node = cgraph_get_node (alias); |
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581 |
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582 if (node) |
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583 { |
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584 gcc_assert (node->local.finalized); |
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585 gcc_assert (!node->same_body); |
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586 cgraph_remove_node (node); |
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587 } |
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588 |
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589 node = cgraph_same_body_alias_1 (alias, decl); |
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590 gcc_assert (node); |
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591 #ifdef ENABLE_CHECKING |
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592 gcc_assert (!virtual_offset |
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593 || tree_int_cst_equal (virtual_offset, size_int (virtual_value))); |
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594 #endif |
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595 node->thunk.fixed_offset = fixed_offset; |
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596 node->thunk.this_adjusting = this_adjusting; |
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597 node->thunk.virtual_value = virtual_value; |
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598 node->thunk.virtual_offset_p = virtual_offset != NULL; |
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599 node->thunk.alias = real_alias; |
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600 node->thunk.thunk_p = true; |
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601 } |
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602 |
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603 /* Returns the cgraph node assigned to DECL or NULL if no cgraph node |
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604 is assigned. */ |
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605 |
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606 struct cgraph_node * |
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607 cgraph_get_node (tree decl) |
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608 { |
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609 struct cgraph_node key, *node = NULL, **slot; |
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610 |
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611 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); |
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612 |
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613 if (!cgraph_hash) |
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614 return NULL; |
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615 |
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616 key.decl = decl; |
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617 |
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618 slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, &key, |
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619 NO_INSERT); |
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620 |
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621 if (slot && *slot) |
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622 { |
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623 node = *slot; |
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624 if (node->same_body_alias) |
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625 node = node->same_body; |
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626 } |
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627 return node; |
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628 } |
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629 |
0 | 630 /* Insert already constructed node into hashtable. */ |
631 | |
632 void | |
633 cgraph_insert_node_to_hashtable (struct cgraph_node *node) | |
634 { | |
635 struct cgraph_node **slot; | |
636 | |
637 slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, node, INSERT); | |
638 | |
639 gcc_assert (!*slot); | |
640 *slot = node; | |
641 } | |
642 | |
643 /* Returns a hash code for P. */ | |
644 | |
645 static hashval_t | |
646 hash_node_by_assembler_name (const void *p) | |
647 { | |
648 const struct cgraph_node *n = (const struct cgraph_node *) p; | |
649 return (hashval_t) decl_assembler_name_hash (DECL_ASSEMBLER_NAME (n->decl)); | |
650 } | |
651 | |
652 /* Returns nonzero if P1 and P2 are equal. */ | |
653 | |
654 static int | |
655 eq_assembler_name (const void *p1, const void *p2) | |
656 { | |
657 const struct cgraph_node *n1 = (const struct cgraph_node *) p1; | |
658 const_tree name = (const_tree)p2; | |
659 return (decl_assembler_name_equal (n1->decl, name)); | |
660 } | |
661 | |
662 /* Return the cgraph node that has ASMNAME for its DECL_ASSEMBLER_NAME. | |
663 Return NULL if there's no such node. */ | |
664 | |
665 struct cgraph_node * | |
666 cgraph_node_for_asm (tree asmname) | |
667 { | |
668 struct cgraph_node *node; | |
669 void **slot; | |
670 | |
671 if (!assembler_name_hash) | |
672 { | |
673 assembler_name_hash = | |
674 htab_create_ggc (10, hash_node_by_assembler_name, eq_assembler_name, | |
675 NULL); | |
676 for (node = cgraph_nodes; node; node = node->next) | |
677 if (!node->global.inlined_to) | |
678 { | |
679 tree name = DECL_ASSEMBLER_NAME (node->decl); | |
680 slot = htab_find_slot_with_hash (assembler_name_hash, name, | |
681 decl_assembler_name_hash (name), | |
682 INSERT); | |
683 /* We can have multiple declarations with same assembler name. For C++ | |
684 it is __builtin_strlen and strlen, for instance. Do we need to | |
685 record them all? Original implementation marked just first one | |
686 so lets hope for the best. */ | |
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687 if (!*slot) |
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688 *slot = node; |
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689 if (node->same_body) |
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690 { |
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691 struct cgraph_node *alias; |
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692 |
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693 for (alias = node->same_body; alias; alias = alias->next) |
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694 { |
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695 hashval_t hash; |
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696 name = DECL_ASSEMBLER_NAME (alias->decl); |
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697 hash = decl_assembler_name_hash (name); |
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698 slot = htab_find_slot_with_hash (assembler_name_hash, name, |
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699 hash, INSERT); |
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700 if (!*slot) |
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701 *slot = alias; |
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702 } |
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703 } |
0 | 704 } |
705 } | |
706 | |
707 slot = htab_find_slot_with_hash (assembler_name_hash, asmname, | |
708 decl_assembler_name_hash (asmname), | |
709 NO_INSERT); | |
710 | |
711 if (slot) | |
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712 { |
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713 node = (struct cgraph_node *) *slot; |
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714 if (node->same_body_alias) |
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715 node = node->same_body; |
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716 return node; |
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717 } |
0 | 718 return NULL; |
719 } | |
720 | |
721 /* Returns a hash value for X (which really is a die_struct). */ | |
722 | |
723 static hashval_t | |
724 edge_hash (const void *x) | |
725 { | |
726 return htab_hash_pointer (((const struct cgraph_edge *) x)->call_stmt); | |
727 } | |
728 | |
729 /* Return nonzero if decl_id of die_struct X is the same as UID of decl *Y. */ | |
730 | |
731 static int | |
732 edge_eq (const void *x, const void *y) | |
733 { | |
734 return ((const struct cgraph_edge *) x)->call_stmt == y; | |
735 } | |
736 | |
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737 /* Add call graph edge E to call site hash of its caller. */ |
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738 |
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739 static inline void |
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740 cgraph_add_edge_to_call_site_hash (struct cgraph_edge *e) |
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741 { |
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742 void **slot; |
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743 slot = htab_find_slot_with_hash (e->caller->call_site_hash, |
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744 e->call_stmt, |
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745 htab_hash_pointer (e->call_stmt), |
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746 INSERT); |
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747 gcc_assert (!*slot); |
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748 *slot = e; |
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749 } |
0 | 750 |
751 /* Return the callgraph edge representing the GIMPLE_CALL statement | |
752 CALL_STMT. */ | |
753 | |
754 struct cgraph_edge * | |
755 cgraph_edge (struct cgraph_node *node, gimple call_stmt) | |
756 { | |
757 struct cgraph_edge *e, *e2; | |
758 int n = 0; | |
759 | |
760 if (node->call_site_hash) | |
761 return (struct cgraph_edge *) | |
762 htab_find_with_hash (node->call_site_hash, call_stmt, | |
763 htab_hash_pointer (call_stmt)); | |
764 | |
765 /* This loop may turn out to be performance problem. In such case adding | |
766 hashtables into call nodes with very many edges is probably best | |
767 solution. It is not good idea to add pointer into CALL_EXPR itself | |
768 because we want to make possible having multiple cgraph nodes representing | |
769 different clones of the same body before the body is actually cloned. */ | |
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770 for (e = node->callees; e; e = e->next_callee) |
0 | 771 { |
772 if (e->call_stmt == call_stmt) | |
773 break; | |
774 n++; | |
775 } | |
776 | |
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777 if (!e) |
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778 for (e = node->indirect_calls; e; e = e->next_callee) |
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779 { |
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780 if (e->call_stmt == call_stmt) |
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781 break; |
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782 n++; |
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783 } |
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784 |
0 | 785 if (n > 100) |
786 { | |
787 node->call_site_hash = htab_create_ggc (120, edge_hash, edge_eq, NULL); | |
788 for (e2 = node->callees; e2; e2 = e2->next_callee) | |
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789 cgraph_add_edge_to_call_site_hash (e2); |
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790 for (e2 = node->indirect_calls; e2; e2 = e2->next_callee) |
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791 cgraph_add_edge_to_call_site_hash (e2); |
0 | 792 } |
793 | |
794 return e; | |
795 } | |
796 | |
797 | |
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798 /* Change field call_stmt of edge E to NEW_STMT. */ |
0 | 799 |
800 void | |
801 cgraph_set_call_stmt (struct cgraph_edge *e, gimple new_stmt) | |
802 { | |
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803 tree decl; |
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804 |
0 | 805 if (e->caller->call_site_hash) |
806 { | |
807 htab_remove_elt_with_hash (e->caller->call_site_hash, | |
808 e->call_stmt, | |
809 htab_hash_pointer (e->call_stmt)); | |
810 } | |
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811 |
0 | 812 e->call_stmt = new_stmt; |
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813 if (e->indirect_unknown_callee |
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814 && (decl = gimple_call_fndecl (new_stmt))) |
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815 { |
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816 /* Constant propagation (and possibly also inlining?) can turn an |
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817 indirect call into a direct one. */ |
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818 struct cgraph_node *new_callee = cgraph_node (decl); |
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819 |
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820 cgraph_make_edge_direct (e, new_callee); |
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821 } |
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822 |
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823 push_cfun (DECL_STRUCT_FUNCTION (e->caller->decl)); |
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824 e->can_throw_external = stmt_can_throw_external (new_stmt); |
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825 pop_cfun (); |
0 | 826 if (e->caller->call_site_hash) |
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|
827 cgraph_add_edge_to_call_site_hash (e); |
0 | 828 } |
829 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
830 /* Like cgraph_set_call_stmt but walk the clone tree and update all |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
831 clones sharing the same function body. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
832 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
833 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
834 cgraph_set_call_stmt_including_clones (struct cgraph_node *orig, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
835 gimple old_stmt, gimple new_stmt) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
836 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
837 struct cgraph_node *node; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
838 struct cgraph_edge *edge = cgraph_edge (orig, old_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
839 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
840 if (edge) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
841 cgraph_set_call_stmt (edge, new_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
842 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
843 node = orig->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
844 if (node) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
845 while (node != orig) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
846 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
847 struct cgraph_edge *edge = cgraph_edge (node, old_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
848 if (edge) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
849 cgraph_set_call_stmt (edge, new_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
850 if (node->clones) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
851 node = node->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
852 else if (node->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
853 node = node->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
854 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
855 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
856 while (node != orig && !node->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
857 node = node->clone_of; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
858 if (node != orig) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
859 node = node->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
860 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
861 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
862 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
863 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
864 /* Like cgraph_create_edge walk the clone tree and update all clones sharing |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
865 same function body. If clones already have edge for OLD_STMT; only |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
866 update the edge same way as cgraph_set_call_stmt_including_clones does. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
867 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
868 TODO: COUNT and LOOP_DEPTH should be properly distributed based on relative |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
869 frequencies of the clones. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
870 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
871 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
872 cgraph_create_edge_including_clones (struct cgraph_node *orig, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
873 struct cgraph_node *callee, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
874 gimple old_stmt, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
875 gimple stmt, gcov_type count, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
876 int freq, int loop_depth, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
877 cgraph_inline_failed_t reason) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
878 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
879 struct cgraph_node *node; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
880 struct cgraph_edge *edge; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
881 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
882 if (!cgraph_edge (orig, stmt)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
883 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
884 edge = cgraph_create_edge (orig, callee, stmt, count, freq, loop_depth); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
885 edge->inline_failed = reason; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
886 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
887 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
888 node = orig->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
889 if (node) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
890 while (node != orig) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
891 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
892 struct cgraph_edge *edge = cgraph_edge (node, old_stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
893 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
894 /* It is possible that clones already contain the edge while |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
895 master didn't. Either we promoted indirect call into direct |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
896 call in the clone or we are processing clones of unreachable |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
897 master where edges has been rmeoved. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
898 if (edge) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
899 cgraph_set_call_stmt (edge, stmt); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
900 else if (!cgraph_edge (node, stmt)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
901 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
902 edge = cgraph_create_edge (node, callee, stmt, count, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
903 freq, loop_depth); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
904 edge->inline_failed = reason; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
905 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
906 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
907 if (node->clones) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
908 node = node->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
909 else if (node->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
910 node = node->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
911 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
912 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
913 while (node != orig && !node->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
914 node = node->clone_of; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
915 if (node != orig) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
916 node = node->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
917 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
918 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
919 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
920 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
921 /* Give initial reasons why inlining would fail on EDGE. This gets either |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
922 nullified or usually overwritten by more precise reasons later. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
923 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
924 static void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
925 initialize_inline_failed (struct cgraph_edge *e) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
926 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
927 struct cgraph_node *callee = e->callee; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
928 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
929 if (e->indirect_unknown_callee) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
930 e->inline_failed = CIF_INDIRECT_UNKNOWN_CALL; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
931 else if (!callee->analyzed) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
932 e->inline_failed = CIF_BODY_NOT_AVAILABLE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
933 else if (callee->local.redefined_extern_inline) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
934 e->inline_failed = CIF_REDEFINED_EXTERN_INLINE; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
935 else if (!callee->local.inlinable) |
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936 e->inline_failed = CIF_FUNCTION_NOT_INLINABLE; |
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937 else if (e->call_stmt && gimple_call_cannot_inline_p (e->call_stmt)) |
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938 e->inline_failed = CIF_MISMATCHED_ARGUMENTS; |
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939 else |
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940 e->inline_failed = CIF_FUNCTION_NOT_CONSIDERED; |
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941 } |
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942 |
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943 /* Allocate a cgraph_edge structure and fill it with data according to the |
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944 parameters of which only CALLEE can be NULL (when creating an indirect call |
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945 edge). */ |
0 | 946 |
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947 static struct cgraph_edge * |
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948 cgraph_create_edge_1 (struct cgraph_node *caller, struct cgraph_node *callee, |
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949 gimple call_stmt, gcov_type count, int freq, int nest) |
0 | 950 { |
951 struct cgraph_edge *edge; | |
952 | |
55
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953 /* LTO does not actually have access to the call_stmt since these |
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954 have not been loaded yet. */ |
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955 if (call_stmt) |
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956 { |
0 | 957 #ifdef ENABLE_CHECKING |
55
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958 /* This is rather pricely check possibly trigerring construction of |
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959 call stmt hashtable. */ |
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960 gcc_assert (!cgraph_edge (caller, call_stmt)); |
0 | 961 #endif |
962 | |
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963 gcc_assert (is_gimple_call (call_stmt)); |
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964 } |
0 | 965 |
966 if (free_edges) | |
967 { | |
968 edge = free_edges; | |
969 free_edges = NEXT_FREE_EDGE (edge); | |
970 } | |
971 else | |
972 { | |
973 edge = GGC_NEW (struct cgraph_edge); | |
974 edge->uid = cgraph_edge_max_uid++; | |
975 } | |
976 | |
977 edge->aux = NULL; | |
978 edge->caller = caller; | |
979 edge->callee = callee; | |
980 edge->prev_caller = NULL; | |
63
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981 edge->next_caller = NULL; |
0 | 982 edge->prev_callee = NULL; |
63
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983 edge->next_callee = NULL; |
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984 |
0 | 985 edge->count = count; |
986 gcc_assert (count >= 0); | |
987 edge->frequency = freq; | |
988 gcc_assert (freq >= 0); | |
989 gcc_assert (freq <= CGRAPH_FREQ_MAX); | |
990 edge->loop_nest = nest; | |
63
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991 |
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992 edge->call_stmt = call_stmt; |
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993 push_cfun (DECL_STRUCT_FUNCTION (caller->decl)); |
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994 edge->can_throw_external |
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995 = call_stmt ? stmt_can_throw_external (call_stmt) : false; |
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996 pop_cfun (); |
55
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997 edge->call_stmt_cannot_inline_p = |
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998 (call_stmt ? gimple_call_cannot_inline_p (call_stmt) : false); |
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999 if (call_stmt && caller->call_site_hash) |
63
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1000 cgraph_add_edge_to_call_site_hash (edge); |
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1001 |
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1002 edge->indirect_info = NULL; |
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1003 edge->indirect_inlining_edge = 0; |
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1004 |
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1005 return edge; |
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1006 } |
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1007 |
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1008 /* Create edge from CALLER to CALLEE in the cgraph. */ |
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1009 |
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1010 struct cgraph_edge * |
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1011 cgraph_create_edge (struct cgraph_node *caller, struct cgraph_node *callee, |
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1012 gimple call_stmt, gcov_type count, int freq, int nest) |
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1013 { |
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1014 struct cgraph_edge *edge = cgraph_create_edge_1 (caller, callee, call_stmt, |
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1015 count, freq, nest); |
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1016 |
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1017 edge->indirect_unknown_callee = 0; |
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1018 initialize_inline_failed (edge); |
55
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1019 |
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1020 edge->next_caller = callee->callers; |
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1021 if (callee->callers) |
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1022 callee->callers->prev_caller = edge; |
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1023 edge->next_callee = caller->callees; |
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1024 if (caller->callees) |
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1025 caller->callees->prev_callee = edge; |
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1026 caller->callees = edge; |
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1027 callee->callers = edge; |
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1028 |
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1029 return edge; |
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1030 } |
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1031 |
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1032 |
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1033 /* Create an indirect edge with a yet-undetermined callee where the call |
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1034 statement destination is a formal parameter of the caller with index |
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1035 PARAM_INDEX. */ |
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1036 |
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1037 struct cgraph_edge * |
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1038 cgraph_create_indirect_edge (struct cgraph_node *caller, gimple call_stmt, |
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1039 int ecf_flags, |
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1040 gcov_type count, int freq, int nest) |
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1041 { |
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1042 struct cgraph_edge *edge = cgraph_create_edge_1 (caller, NULL, call_stmt, |
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1043 count, freq, nest); |
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1044 |
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1045 edge->indirect_unknown_callee = 1; |
55
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1046 initialize_inline_failed (edge); |
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1047 |
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1048 edge->indirect_info = GGC_CNEW (struct cgraph_indirect_call_info); |
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1049 edge->indirect_info->param_index = -1; |
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1050 edge->indirect_info->ecf_flags = ecf_flags; |
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1051 |
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1052 edge->next_callee = caller->indirect_calls; |
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1053 if (caller->indirect_calls) |
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1054 caller->indirect_calls->prev_callee = edge; |
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1055 caller->indirect_calls = edge; |
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1056 |
0 | 1057 return edge; |
1058 } | |
1059 | |
1060 /* Remove the edge E from the list of the callers of the callee. */ | |
1061 | |
1062 static inline void | |
1063 cgraph_edge_remove_callee (struct cgraph_edge *e) | |
1064 { | |
63
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1065 gcc_assert (!e->indirect_unknown_callee); |
0 | 1066 if (e->prev_caller) |
1067 e->prev_caller->next_caller = e->next_caller; | |
1068 if (e->next_caller) | |
1069 e->next_caller->prev_caller = e->prev_caller; | |
1070 if (!e->prev_caller) | |
1071 e->callee->callers = e->next_caller; | |
1072 } | |
1073 | |
1074 /* Remove the edge E from the list of the callees of the caller. */ | |
1075 | |
1076 static inline void | |
1077 cgraph_edge_remove_caller (struct cgraph_edge *e) | |
1078 { | |
1079 if (e->prev_callee) | |
1080 e->prev_callee->next_callee = e->next_callee; | |
1081 if (e->next_callee) | |
1082 e->next_callee->prev_callee = e->prev_callee; | |
1083 if (!e->prev_callee) | |
63
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1084 { |
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1085 if (e->indirect_unknown_callee) |
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1086 e->caller->indirect_calls = e->next_callee; |
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1087 else |
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1088 e->caller->callees = e->next_callee; |
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1089 } |
0 | 1090 if (e->caller->call_site_hash) |
1091 htab_remove_elt_with_hash (e->caller->call_site_hash, | |
1092 e->call_stmt, | |
1093 htab_hash_pointer (e->call_stmt)); | |
1094 } | |
1095 | |
1096 /* Put the edge onto the free list. */ | |
1097 | |
1098 static void | |
1099 cgraph_free_edge (struct cgraph_edge *e) | |
1100 { | |
1101 int uid = e->uid; | |
1102 | |
1103 /* Clear out the edge so we do not dangle pointers. */ | |
1104 memset (e, 0, sizeof (*e)); | |
1105 e->uid = uid; | |
1106 NEXT_FREE_EDGE (e) = free_edges; | |
1107 free_edges = e; | |
1108 } | |
1109 | |
1110 /* Remove the edge E in the cgraph. */ | |
1111 | |
1112 void | |
1113 cgraph_remove_edge (struct cgraph_edge *e) | |
1114 { | |
1115 /* Call all edge removal hooks. */ | |
1116 cgraph_call_edge_removal_hooks (e); | |
1117 | |
63
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1118 if (!e->indirect_unknown_callee) |
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1119 /* Remove from callers list of the callee. */ |
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1120 cgraph_edge_remove_callee (e); |
0 | 1121 |
1122 /* Remove from callees list of the callers. */ | |
1123 cgraph_edge_remove_caller (e); | |
1124 | |
1125 /* Put the edge onto the free list. */ | |
1126 cgraph_free_edge (e); | |
1127 } | |
1128 | |
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1129 /* Set callee of call graph edge E and add it to the corresponding set of |
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1130 callers. */ |
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1131 |
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1132 static void |
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1133 cgraph_set_edge_callee (struct cgraph_edge *e, struct cgraph_node *n) |
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1134 { |
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1135 e->prev_caller = NULL; |
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1136 if (n->callers) |
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1137 n->callers->prev_caller = e; |
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1138 e->next_caller = n->callers; |
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1139 n->callers = e; |
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1140 e->callee = n; |
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1141 } |
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1142 |
0 | 1143 /* Redirect callee of E to N. The function does not update underlying |
1144 call expression. */ | |
1145 | |
1146 void | |
1147 cgraph_redirect_edge_callee (struct cgraph_edge *e, struct cgraph_node *n) | |
1148 { | |
1149 /* Remove from callers list of the current callee. */ | |
1150 cgraph_edge_remove_callee (e); | |
1151 | |
1152 /* Insert to callers list of the new callee. */ | |
63
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1153 cgraph_set_edge_callee (e, n); |
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1154 } |
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1155 |
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1156 /* Make an indirect EDGE with an unknown callee an ordinary edge leading to |
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1157 CALLEE. */ |
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1158 |
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1159 void |
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1160 cgraph_make_edge_direct (struct cgraph_edge *edge, struct cgraph_node *callee) |
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1161 { |
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1162 edge->indirect_unknown_callee = 0; |
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1163 |
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1164 /* Get the edge out of the indirect edge list. */ |
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1165 if (edge->prev_callee) |
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1166 edge->prev_callee->next_callee = edge->next_callee; |
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1167 if (edge->next_callee) |
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1168 edge->next_callee->prev_callee = edge->prev_callee; |
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1169 if (!edge->prev_callee) |
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1170 edge->caller->indirect_calls = edge->next_callee; |
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1171 |
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1172 /* Put it into the normal callee list */ |
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1173 edge->prev_callee = NULL; |
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1174 edge->next_callee = edge->caller->callees; |
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1175 if (edge->caller->callees) |
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1176 edge->caller->callees->prev_callee = edge; |
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1177 edge->caller->callees = edge; |
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1178 |
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1179 /* Insert to callers list of the new callee. */ |
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1180 cgraph_set_edge_callee (edge, callee); |
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1181 |
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1182 /* We need to re-determine the inlining status of the edge. */ |
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1183 initialize_inline_failed (edge); |
0 | 1184 } |
1185 | |
1186 | |
1187 /* Update or remove the corresponding cgraph edge if a GIMPLE_CALL | |
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1188 OLD_STMT changed into NEW_STMT. OLD_CALL is gimple_call_fndecl |
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1189 of OLD_STMT if it was previously call statement. */ |
0 | 1190 |
55
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1191 static void |
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1192 cgraph_update_edges_for_call_stmt_node (struct cgraph_node *node, |
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1193 gimple old_stmt, tree old_call, gimple new_stmt) |
0 | 1194 { |
55
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1195 tree new_call = (is_gimple_call (new_stmt)) ? gimple_call_fndecl (new_stmt) : 0; |
0 | 1196 |
55
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1197 /* We are seeing indirect calls, then there is nothing to update. */ |
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1198 if (!new_call && !old_call) |
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1199 return; |
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1200 /* See if we turned indirect call into direct call or folded call to one builtin |
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1201 into different bultin. */ |
0 | 1202 if (old_call != new_call) |
1203 { | |
1204 struct cgraph_edge *e = cgraph_edge (node, old_stmt); | |
1205 struct cgraph_edge *ne = NULL; | |
55
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1206 gcov_type count; |
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1207 int frequency; |
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1208 int loop_nest; |
0 | 1209 |
1210 if (e) | |
1211 { | |
63
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1212 /* See if the edge is already there and has the correct callee. It |
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1213 might be so because of indirect inlining has already updated |
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1214 it. */ |
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1215 if (new_call && e->callee && e->callee->decl == new_call) |
55
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1216 return; |
0 | 1217 |
55
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1218 /* Otherwise remove edge and create new one; we can't simply redirect |
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1219 since function has changed, so inline plan and other information |
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1220 attached to edge is invalid. */ |
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1221 count = e->count; |
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1222 frequency = e->frequency; |
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1223 loop_nest = e->loop_nest; |
0 | 1224 cgraph_remove_edge (e); |
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1225 } |
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1226 else |
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1227 { |
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1228 /* We are seeing new direct call; compute profile info based on BB. */ |
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1229 basic_block bb = gimple_bb (new_stmt); |
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1230 count = bb->count; |
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1231 frequency = compute_call_stmt_bb_frequency (current_function_decl, |
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1232 bb); |
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1233 loop_nest = bb->loop_depth; |
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1234 } |
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1235 |
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1236 if (new_call) |
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1237 { |
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1238 ne = cgraph_create_edge (node, cgraph_node (new_call), |
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1239 new_stmt, count, frequency, |
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1240 loop_nest); |
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1241 gcc_assert (ne->inline_failed); |
0 | 1242 } |
1243 } | |
55
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1244 /* We only updated the call stmt; update pointer in cgraph edge.. */ |
0 | 1245 else if (old_stmt != new_stmt) |
55
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1246 cgraph_set_call_stmt (cgraph_edge (node, old_stmt), new_stmt); |
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1247 } |
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1248 |
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1249 /* Update or remove the corresponding cgraph edge if a GIMPLE_CALL |
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|
1250 OLD_STMT changed into NEW_STMT. OLD_DECL is gimple_call_fndecl |
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1251 of OLD_STMT before it was updated (updating can happen inplace). */ |
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1252 |
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1253 void |
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1254 cgraph_update_edges_for_call_stmt (gimple old_stmt, tree old_decl, gimple new_stmt) |
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1255 { |
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1256 struct cgraph_node *orig = cgraph_node (cfun->decl); |
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1257 struct cgraph_node *node; |
0 | 1258 |
55
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1259 cgraph_update_edges_for_call_stmt_node (orig, old_stmt, old_decl, new_stmt); |
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1260 if (orig->clones) |
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1261 for (node = orig->clones; node != orig;) |
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1262 { |
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1263 cgraph_update_edges_for_call_stmt_node (node, old_stmt, old_decl, new_stmt); |
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1264 if (node->clones) |
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1265 node = node->clones; |
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1266 else if (node->next_sibling_clone) |
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1267 node = node->next_sibling_clone; |
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1268 else |
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1269 { |
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1270 while (node != orig && !node->next_sibling_clone) |
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|
1271 node = node->clone_of; |
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1272 if (node != orig) |
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1273 node = node->next_sibling_clone; |
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1274 } |
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1275 } |
0 | 1276 } |
1277 | |
1278 | |
1279 /* Remove all callees from the node. */ | |
1280 | |
1281 void | |
1282 cgraph_node_remove_callees (struct cgraph_node *node) | |
1283 { | |
1284 struct cgraph_edge *e, *f; | |
1285 | |
1286 /* It is sufficient to remove the edges from the lists of callers of | |
1287 the callees. The callee list of the node can be zapped with one | |
1288 assignment. */ | |
1289 for (e = node->callees; e; e = f) | |
1290 { | |
1291 f = e->next_callee; | |
1292 cgraph_call_edge_removal_hooks (e); | |
63
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1293 if (!e->indirect_unknown_callee) |
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|
1294 cgraph_edge_remove_callee (e); |
0 | 1295 cgraph_free_edge (e); |
1296 } | |
63
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|
1297 for (e = node->indirect_calls; e; e = f) |
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|
1298 { |
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|
1299 f = e->next_callee; |
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|
1300 cgraph_call_edge_removal_hooks (e); |
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1301 if (!e->indirect_unknown_callee) |
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|
1302 cgraph_edge_remove_callee (e); |
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|
1303 cgraph_free_edge (e); |
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1304 } |
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|
1305 node->indirect_calls = NULL; |
0 | 1306 node->callees = NULL; |
1307 if (node->call_site_hash) | |
1308 { | |
1309 htab_delete (node->call_site_hash); | |
1310 node->call_site_hash = NULL; | |
1311 } | |
1312 } | |
1313 | |
1314 /* Remove all callers from the node. */ | |
1315 | |
1316 static void | |
1317 cgraph_node_remove_callers (struct cgraph_node *node) | |
1318 { | |
1319 struct cgraph_edge *e, *f; | |
1320 | |
1321 /* It is sufficient to remove the edges from the lists of callees of | |
1322 the callers. The caller list of the node can be zapped with one | |
1323 assignment. */ | |
1324 for (e = node->callers; e; e = f) | |
1325 { | |
1326 f = e->next_caller; | |
1327 cgraph_call_edge_removal_hooks (e); | |
1328 cgraph_edge_remove_caller (e); | |
1329 cgraph_free_edge (e); | |
1330 } | |
1331 node->callers = NULL; | |
1332 } | |
1333 | |
1334 /* Release memory used to represent body of function NODE. */ | |
1335 | |
1336 void | |
1337 cgraph_release_function_body (struct cgraph_node *node) | |
1338 { | |
1339 if (DECL_STRUCT_FUNCTION (node->decl)) | |
1340 { | |
1341 tree old_decl = current_function_decl; | |
1342 push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
1343 if (cfun->gimple_df) | |
1344 { | |
1345 current_function_decl = node->decl; | |
1346 delete_tree_ssa (); | |
1347 delete_tree_cfg_annotations (); | |
1348 cfun->eh = NULL; | |
1349 current_function_decl = old_decl; | |
1350 } | |
1351 if (cfun->cfg) | |
1352 { | |
1353 gcc_assert (dom_computed[0] == DOM_NONE); | |
1354 gcc_assert (dom_computed[1] == DOM_NONE); | |
1355 clear_edges (); | |
1356 } | |
1357 if (cfun->value_histograms) | |
1358 free_histograms (); | |
1359 gcc_assert (!current_loops); | |
1360 pop_cfun(); | |
1361 gimple_set_body (node->decl, NULL); | |
1362 VEC_free (ipa_opt_pass, heap, | |
55
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1363 node->ipa_transforms_to_apply); |
0 | 1364 /* Struct function hangs a lot of data that would leak if we didn't |
1365 removed all pointers to it. */ | |
1366 ggc_free (DECL_STRUCT_FUNCTION (node->decl)); | |
1367 DECL_STRUCT_FUNCTION (node->decl) = NULL; | |
1368 } | |
1369 DECL_SAVED_TREE (node->decl) = NULL; | |
1370 /* If the node is abstract and needed, then do not clear DECL_INITIAL | |
1371 of its associated function function declaration because it's | |
1372 needed to emit debug info later. */ | |
1373 if (!node->abstract_and_needed) | |
1374 DECL_INITIAL (node->decl) = error_mark_node; | |
1375 } | |
1376 | |
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1377 /* Remove same body alias node. */ |
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1378 |
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1379 void |
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1380 cgraph_remove_same_body_alias (struct cgraph_node *node) |
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1381 { |
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1382 void **slot; |
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1383 int uid = node->uid; |
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1384 |
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1385 gcc_assert (node->same_body_alias); |
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1386 if (node->previous) |
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1387 node->previous->next = node->next; |
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1388 else |
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1389 node->same_body->same_body = node->next; |
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1390 if (node->next) |
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1391 node->next->previous = node->previous; |
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1392 node->next = NULL; |
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1393 node->previous = NULL; |
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1394 slot = htab_find_slot (cgraph_hash, node, NO_INSERT); |
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1395 if (*slot == node) |
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1396 htab_clear_slot (cgraph_hash, slot); |
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1397 if (assembler_name_hash) |
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1398 { |
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1399 tree name = DECL_ASSEMBLER_NAME (node->decl); |
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1400 slot = htab_find_slot_with_hash (assembler_name_hash, name, |
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1401 decl_assembler_name_hash (name), |
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1402 NO_INSERT); |
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1403 if (slot && *slot == node) |
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1404 htab_clear_slot (assembler_name_hash, slot); |
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1405 } |
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1406 |
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1407 /* Clear out the node to NULL all pointers and add the node to the free |
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1408 list. */ |
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1409 memset (node, 0, sizeof(*node)); |
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1410 node->uid = uid; |
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1411 NEXT_FREE_NODE (node) = free_nodes; |
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1412 free_nodes = node; |
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1413 } |
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1414 |
0 | 1415 /* Remove the node from cgraph. */ |
1416 | |
1417 void | |
1418 cgraph_remove_node (struct cgraph_node *node) | |
1419 { | |
1420 void **slot; | |
1421 bool kill_body = false; | |
1422 struct cgraph_node *n; | |
1423 int uid = node->uid; | |
1424 | |
1425 cgraph_call_node_removal_hooks (node); | |
1426 cgraph_node_remove_callers (node); | |
1427 cgraph_node_remove_callees (node); | |
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1428 ipa_remove_all_references (&node->ref_list); |
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1429 ipa_remove_all_refering (&node->ref_list); |
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1430 VEC_free (ipa_opt_pass, heap, |
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1431 node->ipa_transforms_to_apply); |
0 | 1432 |
1433 /* Incremental inlining access removed nodes stored in the postorder list. | |
1434 */ | |
1435 node->needed = node->reachable = false; | |
1436 for (n = node->nested; n; n = n->next_nested) | |
1437 n->origin = NULL; | |
1438 node->nested = NULL; | |
1439 if (node->origin) | |
1440 { | |
1441 struct cgraph_node **node2 = &node->origin->nested; | |
1442 | |
1443 while (*node2 != node) | |
1444 node2 = &(*node2)->next_nested; | |
1445 *node2 = node->next_nested; | |
1446 } | |
1447 if (node->previous) | |
1448 node->previous->next = node->next; | |
1449 else | |
1450 cgraph_nodes = node->next; | |
1451 if (node->next) | |
1452 node->next->previous = node->previous; | |
1453 node->next = NULL; | |
1454 node->previous = NULL; | |
1455 slot = htab_find_slot (cgraph_hash, node, NO_INSERT); | |
1456 if (*slot == node) | |
1457 { | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1458 struct cgraph_node *next_inline_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1459 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1460 for (next_inline_clone = node->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1461 next_inline_clone && next_inline_clone->decl != node->decl; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1462 next_inline_clone = next_inline_clone->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1463 ; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1464 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1465 /* If there is inline clone of the node being removed, we need |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1466 to put it into the position of removed node and reorganize all |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1467 other clones to be based on it. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1468 if (next_inline_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1469 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1470 struct cgraph_node *n; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1471 struct cgraph_node *new_clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1472 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1473 *slot = next_inline_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1474 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1475 /* Unlink inline clone from the list of clones of removed node. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1476 if (next_inline_clone->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1477 next_inline_clone->next_sibling_clone->prev_sibling_clone |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1478 = next_inline_clone->prev_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1479 if (next_inline_clone->prev_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1480 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1481 gcc_assert (node->clones != next_inline_clone); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1482 next_inline_clone->prev_sibling_clone->next_sibling_clone |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1483 = next_inline_clone->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1484 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1485 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1486 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1487 gcc_assert (node->clones == next_inline_clone); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1488 node->clones = next_inline_clone->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1489 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1490 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1491 new_clones = node->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1492 node->clones = NULL; |
0 | 1493 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1494 /* Copy clone info. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1495 next_inline_clone->clone = node->clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1496 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1497 /* Now place it into clone tree at same level at NODE. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1498 next_inline_clone->clone_of = node->clone_of; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1499 next_inline_clone->prev_sibling_clone = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1500 next_inline_clone->next_sibling_clone = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1501 if (node->clone_of) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1502 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1503 if (node->clone_of->clones) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1504 node->clone_of->clones->prev_sibling_clone = next_inline_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1505 next_inline_clone->next_sibling_clone = node->clone_of->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1506 node->clone_of->clones = next_inline_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1507 } |
0 | 1508 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1509 /* Merge the clone list. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1510 if (new_clones) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1511 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1512 if (!next_inline_clone->clones) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1513 next_inline_clone->clones = new_clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1514 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1515 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1516 n = next_inline_clone->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1517 while (n->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1518 n = n->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1519 n->next_sibling_clone = new_clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1520 new_clones->prev_sibling_clone = n; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1521 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1522 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1523 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1524 /* Update clone_of pointers. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1525 n = new_clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1526 while (n) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1527 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1528 n->clone_of = next_inline_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1529 n = n->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1530 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1531 } |
0 | 1532 else |
1533 { | |
1534 htab_clear_slot (cgraph_hash, slot); | |
1535 kill_body = true; | |
1536 } | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1537 |
0 | 1538 } |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1539 if (node->prev_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1540 node->prev_sibling_clone->next_sibling_clone = node->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1541 else if (node->clone_of) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1542 node->clone_of->clones = node->next_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1543 if (node->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1544 node->next_sibling_clone->prev_sibling_clone = node->prev_sibling_clone; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1545 if (node->clones) |
0 | 1546 { |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1547 struct cgraph_node *n, *next; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1548 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1549 if (node->clone_of) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1550 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1551 for (n = node->clones; n->next_sibling_clone; n = n->next_sibling_clone) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1552 n->clone_of = node->clone_of; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1553 n->clone_of = node->clone_of; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1554 n->next_sibling_clone = node->clone_of->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1555 if (node->clone_of->clones) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1556 node->clone_of->clones->prev_sibling_clone = n; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1557 node->clone_of->clones = node->clones; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1558 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1559 else |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1560 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1561 /* We are removing node with clones. this makes clones inconsistent, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1562 but assume they will be removed subsequently and just keep clone |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1563 tree intact. This can happen in unreachable function removal since |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1564 we remove unreachable functions in random order, not by bottom-up |
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|
1565 walk of clone trees. */ |
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|
1566 for (n = node->clones; n; n = next) |
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|
1567 { |
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|
1568 next = n->next_sibling_clone; |
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|
1569 n->next_sibling_clone = NULL; |
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|
1570 n->prev_sibling_clone = NULL; |
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|
1571 n->clone_of = NULL; |
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|
1572 } |
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|
1573 } |
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1574 } |
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1575 |
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1576 while (node->same_body) |
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|
1577 cgraph_remove_same_body_alias (node->same_body); |
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|
1578 |
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|
1579 if (node->same_comdat_group) |
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|
1580 { |
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|
1581 struct cgraph_node *prev; |
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|
1582 for (prev = node->same_comdat_group; |
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|
1583 prev->same_comdat_group != node; |
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1584 prev = prev->same_comdat_group) |
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|
1585 ; |
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1586 if (node->same_comdat_group == prev) |
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|
1587 prev->same_comdat_group = NULL; |
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|
1588 else |
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|
1589 prev->same_comdat_group = node->same_comdat_group; |
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|
1590 node->same_comdat_group = NULL; |
0 | 1591 } |
1592 | |
1593 /* While all the clones are removed after being proceeded, the function | |
1594 itself is kept in the cgraph even after it is compiled. Check whether | |
1595 we are done with this body and reclaim it proactively if this is the case. | |
1596 */ | |
1597 if (!kill_body && *slot) | |
1598 { | |
1599 struct cgraph_node *n = (struct cgraph_node *) *slot; | |
55
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1600 if (!n->clones && !n->clone_of && !n->global.inlined_to |
0 | 1601 && (cgraph_global_info_ready |
63
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1602 && (TREE_ASM_WRITTEN (n->decl) || DECL_EXTERNAL (n->decl) |
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|
1603 || n->in_other_partition))) |
0 | 1604 kill_body = true; |
1605 } | |
1606 if (assembler_name_hash) | |
1607 { | |
1608 tree name = DECL_ASSEMBLER_NAME (node->decl); | |
1609 slot = htab_find_slot_with_hash (assembler_name_hash, name, | |
1610 decl_assembler_name_hash (name), | |
1611 NO_INSERT); | |
1612 /* Inline clones are not hashed. */ | |
1613 if (slot && *slot == node) | |
1614 htab_clear_slot (assembler_name_hash, slot); | |
1615 } | |
1616 | |
1617 if (kill_body) | |
1618 cgraph_release_function_body (node); | |
1619 node->decl = NULL; | |
1620 if (node->call_site_hash) | |
1621 { | |
1622 htab_delete (node->call_site_hash); | |
1623 node->call_site_hash = NULL; | |
1624 } | |
1625 cgraph_n_nodes--; | |
1626 | |
1627 /* Clear out the node to NULL all pointers and add the node to the free | |
1628 list. */ | |
1629 memset (node, 0, sizeof(*node)); | |
1630 node->uid = uid; | |
1631 NEXT_FREE_NODE (node) = free_nodes; | |
1632 free_nodes = node; | |
1633 } | |
1634 | |
55
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|
1635 /* Remove the node from cgraph. */ |
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|
1636 |
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|
1637 void |
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|
1638 cgraph_remove_node_and_inline_clones (struct cgraph_node *node) |
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|
1639 { |
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|
1640 struct cgraph_edge *e, *next; |
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|
1641 for (e = node->callees; e; e = next) |
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|
1642 { |
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|
1643 next = e->next_callee; |
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|
1644 if (!e->inline_failed) |
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|
1645 cgraph_remove_node_and_inline_clones (e->callee); |
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|
1646 } |
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|
1647 cgraph_remove_node (node); |
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|
1648 } |
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|
1649 |
0 | 1650 /* Notify finalize_compilation_unit that given node is reachable. */ |
1651 | |
1652 void | |
1653 cgraph_mark_reachable_node (struct cgraph_node *node) | |
1654 { | |
1655 if (!node->reachable && node->local.finalized) | |
1656 { | |
63
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|
1657 if (cgraph_global_info_ready) |
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|
1658 { |
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|
1659 /* Verify that function does not appear to be needed out of blue |
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|
1660 during the optimization process. This can happen for extern |
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diff
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|
1661 inlines when bodies was removed after inlining. */ |
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|
1662 gcc_assert ((node->analyzed || DECL_EXTERNAL (node->decl))); |
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diff
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|
1663 } |
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|
1664 else |
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|
1665 notice_global_symbol (node->decl); |
0 | 1666 node->reachable = 1; |
1667 | |
1668 node->next_needed = cgraph_nodes_queue; | |
1669 cgraph_nodes_queue = node; | |
1670 } | |
1671 } | |
1672 | |
1673 /* Likewise indicate that a node is needed, i.e. reachable via some | |
1674 external means. */ | |
1675 | |
1676 void | |
1677 cgraph_mark_needed_node (struct cgraph_node *node) | |
1678 { | |
1679 node->needed = 1; | |
55
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|
1680 gcc_assert (!node->global.inlined_to); |
0 | 1681 cgraph_mark_reachable_node (node); |
1682 } | |
1683 | |
55
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|
1684 /* Likewise indicate that a node is having address taken. */ |
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|
1685 |
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|
1686 void |
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|
1687 cgraph_mark_address_taken_node (struct cgraph_node *node) |
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|
1688 { |
63
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diff
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|
1689 cgraph_mark_reachable_node (node); |
55
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|
1690 node->address_taken = 1; |
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|
1691 } |
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|
1692 |
0 | 1693 /* Return local info for the compiled function. */ |
1694 | |
1695 struct cgraph_local_info * | |
1696 cgraph_local_info (tree decl) | |
1697 { | |
1698 struct cgraph_node *node; | |
1699 | |
1700 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
1701 node = cgraph_node (decl); | |
1702 return &node->local; | |
1703 } | |
1704 | |
1705 /* Return local info for the compiled function. */ | |
1706 | |
1707 struct cgraph_global_info * | |
1708 cgraph_global_info (tree decl) | |
1709 { | |
1710 struct cgraph_node *node; | |
1711 | |
1712 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL && cgraph_global_info_ready); | |
1713 node = cgraph_node (decl); | |
1714 return &node->global; | |
1715 } | |
1716 | |
1717 /* Return local info for the compiled function. */ | |
1718 | |
1719 struct cgraph_rtl_info * | |
1720 cgraph_rtl_info (tree decl) | |
1721 { | |
1722 struct cgraph_node *node; | |
1723 | |
1724 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
1725 node = cgraph_node (decl); | |
1726 if (decl != current_function_decl | |
1727 && !TREE_ASM_WRITTEN (node->decl)) | |
1728 return NULL; | |
1729 return &node->rtl; | |
1730 } | |
1731 | |
55
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1732 /* Return a string describing the failure REASON. */ |
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|
1733 |
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|
1734 const char* |
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|
1735 cgraph_inline_failed_string (cgraph_inline_failed_t reason) |
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1736 { |
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|
1737 #undef DEFCIFCODE |
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|
1738 #define DEFCIFCODE(code, string) string, |
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|
1739 |
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|
1740 static const char *cif_string_table[CIF_N_REASONS] = { |
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|
1741 #include "cif-code.def" |
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|
1742 }; |
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1743 |
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|
1744 /* Signedness of an enum type is implementation defined, so cast it |
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|
1745 to unsigned before testing. */ |
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|
1746 gcc_assert ((unsigned) reason < CIF_N_REASONS); |
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|
1747 return cif_string_table[reason]; |
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1748 } |
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1749 |
0 | 1750 /* Return name of the node used in debug output. */ |
1751 const char * | |
1752 cgraph_node_name (struct cgraph_node *node) | |
1753 { | |
1754 return lang_hooks.decl_printable_name (node->decl, 2); | |
1755 } | |
1756 | |
1757 /* Names used to print out the availability enum. */ | |
1758 const char * const cgraph_availability_names[] = | |
1759 {"unset", "not_available", "overwritable", "available", "local"}; | |
1760 | |
1761 | |
1762 /* Dump call graph node NODE to file F. */ | |
1763 | |
1764 void | |
1765 dump_cgraph_node (FILE *f, struct cgraph_node *node) | |
1766 { | |
1767 struct cgraph_edge *edge; | |
63
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|
1768 int indirect_calls_count = 0; |
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|
1769 |
55
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|
1770 fprintf (f, "%s/%i(%i)", cgraph_node_name (node), node->uid, |
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|
1771 node->pid); |
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1772 dump_addr (f, " @", (void *)node); |
63
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1773 if (DECL_ASSEMBLER_NAME_SET_P (node->decl)) |
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1774 fprintf (f, " (asm: %s)", IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (node->decl))); |
0 | 1775 if (node->global.inlined_to) |
1776 fprintf (f, " (inline copy in %s/%i)", | |
1777 cgraph_node_name (node->global.inlined_to), | |
1778 node->global.inlined_to->uid); | |
55
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|
1779 if (node->clone_of) |
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1780 fprintf (f, " (clone of %s/%i)", |
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1781 cgraph_node_name (node->clone_of), |
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1782 node->clone_of->uid); |
0 | 1783 if (cgraph_function_flags_ready) |
1784 fprintf (f, " availability:%s", | |
1785 cgraph_availability_names [cgraph_function_body_availability (node)]); | |
63
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1786 if (node->analyzed) |
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1787 fprintf (f, " analyzed"); |
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1788 if (node->in_other_partition) |
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1789 fprintf (f, " in_other_partition"); |
0 | 1790 if (node->count) |
1791 fprintf (f, " executed "HOST_WIDEST_INT_PRINT_DEC"x", | |
1792 (HOST_WIDEST_INT)node->count); | |
55
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1793 if (node->local.inline_summary.self_time) |
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1794 fprintf (f, " %i time, %i benefit", node->local.inline_summary.self_time, |
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1795 node->local.inline_summary.time_inlining_benefit); |
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1796 if (node->global.time && node->global.time |
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1797 != node->local.inline_summary.self_time) |
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1798 fprintf (f, " (%i after inlining)", node->global.time); |
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1799 if (node->local.inline_summary.self_size) |
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1800 fprintf (f, " %i size, %i benefit", node->local.inline_summary.self_size, |
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1801 node->local.inline_summary.size_inlining_benefit); |
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1802 if (node->global.size && node->global.size |
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1803 != node->local.inline_summary.self_size) |
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1804 fprintf (f, " (%i after inlining)", node->global.size); |
0 | 1805 if (node->local.inline_summary.estimated_self_stack_size) |
1806 fprintf (f, " %i bytes stack usage", (int)node->local.inline_summary.estimated_self_stack_size); | |
1807 if (node->global.estimated_stack_size != node->local.inline_summary.estimated_self_stack_size) | |
1808 fprintf (f, " %i bytes after inlining", (int)node->global.estimated_stack_size); | |
1809 if (node->origin) | |
1810 fprintf (f, " nested in: %s", cgraph_node_name (node->origin)); | |
1811 if (node->needed) | |
1812 fprintf (f, " needed"); | |
55
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1813 if (node->address_taken) |
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1814 fprintf (f, " address_taken"); |
0 | 1815 else if (node->reachable) |
1816 fprintf (f, " reachable"); | |
63
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1817 else if (node->reachable_from_other_partition) |
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1818 fprintf (f, " reachable_from_other_partition"); |
0 | 1819 if (gimple_has_body_p (node->decl)) |
1820 fprintf (f, " body"); | |
55
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1821 if (node->process) |
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1822 fprintf (f, " process"); |
0 | 1823 if (node->local.local) |
1824 fprintf (f, " local"); | |
1825 if (node->local.externally_visible) | |
1826 fprintf (f, " externally_visible"); | |
1827 if (node->local.finalized) | |
1828 fprintf (f, " finalized"); | |
1829 if (node->local.disregard_inline_limits) | |
1830 fprintf (f, " always_inline"); | |
1831 else if (node->local.inlinable) | |
1832 fprintf (f, " inlinable"); | |
63
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1833 else if (node->local.versionable) |
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1834 fprintf (f, " versionable"); |
0 | 1835 if (node->local.redefined_extern_inline) |
1836 fprintf (f, " redefined_extern_inline"); | |
1837 if (TREE_ASM_WRITTEN (node->decl)) | |
1838 fprintf (f, " asm_written"); | |
1839 | |
1840 fprintf (f, "\n called by: "); | |
1841 for (edge = node->callers; edge; edge = edge->next_caller) | |
1842 { | |
1843 fprintf (f, "%s/%i ", cgraph_node_name (edge->caller), | |
1844 edge->caller->uid); | |
1845 if (edge->count) | |
1846 fprintf (f, "("HOST_WIDEST_INT_PRINT_DEC"x) ", | |
1847 (HOST_WIDEST_INT)edge->count); | |
1848 if (edge->frequency) | |
1849 fprintf (f, "(%.2f per call) ", | |
1850 edge->frequency / (double)CGRAPH_FREQ_BASE); | |
1851 if (!edge->inline_failed) | |
1852 fprintf(f, "(inlined) "); | |
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1853 if (edge->indirect_inlining_edge) |
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1854 fprintf(f, "(indirect_inlining) "); |
55
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1855 if (edge->can_throw_external) |
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1856 fprintf(f, "(can throw external) "); |
0 | 1857 } |
1858 | |
1859 fprintf (f, "\n calls: "); | |
1860 for (edge = node->callees; edge; edge = edge->next_callee) | |
1861 { | |
1862 fprintf (f, "%s/%i ", cgraph_node_name (edge->callee), | |
1863 edge->callee->uid); | |
1864 if (!edge->inline_failed) | |
1865 fprintf(f, "(inlined) "); | |
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1866 if (edge->indirect_inlining_edge) |
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1867 fprintf(f, "(indirect_inlining) "); |
0 | 1868 if (edge->count) |
1869 fprintf (f, "("HOST_WIDEST_INT_PRINT_DEC"x) ", | |
1870 (HOST_WIDEST_INT)edge->count); | |
1871 if (edge->frequency) | |
1872 fprintf (f, "(%.2f per call) ", | |
1873 edge->frequency / (double)CGRAPH_FREQ_BASE); | |
1874 if (edge->loop_nest) | |
1875 fprintf (f, "(nested in %i loops) ", edge->loop_nest); | |
55
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1876 if (edge->can_throw_external) |
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1877 fprintf(f, "(can throw external) "); |
0 | 1878 } |
1879 fprintf (f, "\n"); | |
63
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1880 fprintf (f, " References: "); |
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1881 ipa_dump_references (f, &node->ref_list); |
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1882 fprintf (f, " Refering this function: "); |
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1883 ipa_dump_refering (f, &node->ref_list); |
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1884 |
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1885 for (edge = node->indirect_calls; edge; edge = edge->next_callee) |
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1886 indirect_calls_count++; |
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1887 if (indirect_calls_count) |
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1888 fprintf (f, " has %i outgoing edges for indirect calls.\n", |
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1889 indirect_calls_count); |
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1890 |
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1891 if (node->same_body) |
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1892 { |
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1893 struct cgraph_node *n; |
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1894 fprintf (f, " aliases & thunks:"); |
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1895 for (n = node->same_body; n; n = n->next) |
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1896 { |
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1897 fprintf (f, " %s/%i", cgraph_node_name (n), n->uid); |
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1898 if (n->thunk.thunk_p) |
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1899 { |
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1900 fprintf (f, " (thunk of %s fixed ofset %i virtual value %i has " |
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1901 "virtual offset %i", |
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1902 lang_hooks.decl_printable_name (n->thunk.alias, 2), |
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1903 (int)n->thunk.fixed_offset, |
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1904 (int)n->thunk.virtual_value, |
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1905 (int)n->thunk.virtual_offset_p); |
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1906 fprintf (f, ")"); |
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1907 } |
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1908 if (DECL_ASSEMBLER_NAME_SET_P (n->decl)) |
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1909 fprintf (f, " (asm: %s)", IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); |
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1910 } |
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1911 fprintf (f, "\n"); |
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1912 } |
0 | 1913 } |
1914 | |
1915 | |
1916 /* Dump call graph node NODE to stderr. */ | |
1917 | |
1918 void | |
1919 debug_cgraph_node (struct cgraph_node *node) | |
1920 { | |
1921 dump_cgraph_node (stderr, node); | |
1922 } | |
1923 | |
1924 | |
1925 /* Dump the callgraph to file F. */ | |
1926 | |
1927 void | |
1928 dump_cgraph (FILE *f) | |
1929 { | |
1930 struct cgraph_node *node; | |
1931 | |
1932 fprintf (f, "callgraph:\n\n"); | |
1933 for (node = cgraph_nodes; node; node = node->next) | |
1934 dump_cgraph_node (f, node); | |
1935 } | |
1936 | |
1937 | |
1938 /* Dump the call graph to stderr. */ | |
1939 | |
1940 void | |
1941 debug_cgraph (void) | |
1942 { | |
1943 dump_cgraph (stderr); | |
1944 } | |
1945 | |
1946 | |
1947 /* Set the DECL_ASSEMBLER_NAME and update cgraph hashtables. */ | |
1948 | |
1949 void | |
1950 change_decl_assembler_name (tree decl, tree name) | |
1951 { | |
1952 gcc_assert (!assembler_name_hash); | |
1953 if (!DECL_ASSEMBLER_NAME_SET_P (decl)) | |
1954 { | |
1955 SET_DECL_ASSEMBLER_NAME (decl, name); | |
1956 return; | |
1957 } | |
1958 if (name == DECL_ASSEMBLER_NAME (decl)) | |
1959 return; | |
1960 | |
1961 if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) | |
1962 && DECL_RTL_SET_P (decl)) | |
1963 warning (0, "%D renamed after being referenced in assembly", decl); | |
1964 | |
1965 SET_DECL_ASSEMBLER_NAME (decl, name); | |
1966 } | |
1967 | |
1968 /* Add a top-level asm statement to the list. */ | |
1969 | |
1970 struct cgraph_asm_node * | |
1971 cgraph_add_asm_node (tree asm_str) | |
1972 { | |
1973 struct cgraph_asm_node *node; | |
1974 | |
1975 node = GGC_CNEW (struct cgraph_asm_node); | |
1976 node->asm_str = asm_str; | |
1977 node->order = cgraph_order++; | |
1978 node->next = NULL; | |
1979 if (cgraph_asm_nodes == NULL) | |
1980 cgraph_asm_nodes = node; | |
1981 else | |
1982 cgraph_asm_last_node->next = node; | |
1983 cgraph_asm_last_node = node; | |
1984 return node; | |
1985 } | |
1986 | |
1987 /* Return true when the DECL can possibly be inlined. */ | |
1988 bool | |
1989 cgraph_function_possibly_inlined_p (tree decl) | |
1990 { | |
1991 if (!cgraph_global_info_ready) | |
1992 return !DECL_UNINLINABLE (decl); | |
1993 return DECL_POSSIBLY_INLINED (decl); | |
1994 } | |
1995 | |
1996 /* Create clone of E in the node N represented by CALL_EXPR the callgraph. */ | |
1997 struct cgraph_edge * | |
1998 cgraph_clone_edge (struct cgraph_edge *e, struct cgraph_node *n, | |
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1999 gimple call_stmt, unsigned stmt_uid, gcov_type count_scale, |
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2000 int freq_scale, int loop_nest, bool update_original) |
0 | 2001 { |
2002 struct cgraph_edge *new_edge; | |
2003 gcov_type count = e->count * count_scale / REG_BR_PROB_BASE; | |
55
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2004 gcov_type freq; |
0 | 2005 |
55
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2006 /* We do not want to ignore loop nest after frequency drops to 0. */ |
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2007 if (!freq_scale) |
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2008 freq_scale = 1; |
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2009 freq = e->frequency * (gcov_type) freq_scale / CGRAPH_FREQ_BASE; |
0 | 2010 if (freq > CGRAPH_FREQ_MAX) |
2011 freq = CGRAPH_FREQ_MAX; | |
63
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2012 |
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2013 if (e->indirect_unknown_callee) |
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2014 { |
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2015 tree decl; |
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2016 |
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2017 if (call_stmt && (decl = gimple_call_fndecl (call_stmt))) |
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2018 { |
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2019 struct cgraph_node *callee = cgraph_node (decl); |
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2020 new_edge = cgraph_create_edge (n, callee, call_stmt, count, freq, |
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2021 e->loop_nest + loop_nest); |
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2022 } |
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2023 else |
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2024 { |
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2025 new_edge = cgraph_create_indirect_edge (n, call_stmt, |
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2026 e->indirect_info->ecf_flags, |
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2027 count, freq, |
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2028 e->loop_nest + loop_nest); |
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2029 *new_edge->indirect_info = *e->indirect_info; |
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2030 } |
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2031 } |
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2032 else |
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2033 new_edge = cgraph_create_edge (n, e->callee, call_stmt, count, freq, |
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2034 e->loop_nest + loop_nest); |
0 | 2035 |
2036 new_edge->inline_failed = e->inline_failed; | |
63
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2037 new_edge->indirect_inlining_edge = e->indirect_inlining_edge; |
55
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2038 new_edge->lto_stmt_uid = stmt_uid; |
0 | 2039 if (update_original) |
2040 { | |
2041 e->count -= new_edge->count; | |
2042 if (e->count < 0) | |
2043 e->count = 0; | |
2044 } | |
2045 cgraph_call_edge_duplication_hooks (e, new_edge); | |
2046 return new_edge; | |
2047 } | |
2048 | |
2049 /* Create node representing clone of N executed COUNT times. Decrease | |
2050 the execution counts from original node too. | |
63
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2051 The new clone will have decl set to DECL that may or may not be the same |
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|
2052 as decl of N. |
0 | 2053 |
2054 When UPDATE_ORIGINAL is true, the counts are subtracted from the original | |
2055 function's profile to reflect the fact that part of execution is handled | |
2056 by node. */ | |
2057 struct cgraph_node * | |
63
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2058 cgraph_clone_node (struct cgraph_node *n, tree decl, gcov_type count, int freq, |
55
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2059 int loop_nest, bool update_original, |
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|
2060 VEC(cgraph_edge_p,heap) *redirect_callers) |
0 | 2061 { |
2062 struct cgraph_node *new_node = cgraph_create_node (); | |
2063 struct cgraph_edge *e; | |
2064 gcov_type count_scale; | |
55
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2065 unsigned i; |
0 | 2066 |
63
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2067 new_node->decl = decl; |
0 | 2068 new_node->origin = n->origin; |
2069 if (new_node->origin) | |
2070 { | |
2071 new_node->next_nested = new_node->origin->nested; | |
2072 new_node->origin->nested = new_node; | |
2073 } | |
2074 new_node->analyzed = n->analyzed; | |
2075 new_node->local = n->local; | |
55
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2076 new_node->local.externally_visible = false; |
63
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2077 new_node->local.local = true; |
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2078 new_node->local.vtable_method = false; |
0 | 2079 new_node->global = n->global; |
2080 new_node->rtl = n->rtl; | |
2081 new_node->count = count; | |
63
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2082 new_node->frequency = n->frequency; |
55
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2083 new_node->clone = n->clone; |
63
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2084 new_node->clone.tree_map = 0; |
0 | 2085 if (n->count) |
2086 { | |
2087 if (new_node->count > n->count) | |
2088 count_scale = REG_BR_PROB_BASE; | |
2089 else | |
2090 count_scale = new_node->count * REG_BR_PROB_BASE / n->count; | |
2091 } | |
2092 else | |
2093 count_scale = 0; | |
2094 if (update_original) | |
2095 { | |
2096 n->count -= count; | |
2097 if (n->count < 0) | |
2098 n->count = 0; | |
2099 } | |
2100 | |
55
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2101 for (i = 0; VEC_iterate (cgraph_edge_p, redirect_callers, i, e); i++) |
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2102 { |
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2103 /* Redirect calls to the old version node to point to its new |
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2104 version. */ |
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|
2105 cgraph_redirect_edge_callee (e, new_node); |
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2106 } |
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2107 |
0 | 2108 |
55
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|
2109 for (e = n->callees;e; e=e->next_callee) |
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2110 cgraph_clone_edge (e, new_node, e->call_stmt, e->lto_stmt_uid, |
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|
2111 count_scale, freq, loop_nest, update_original); |
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2112 |
63
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2113 for (e = n->indirect_calls; e; e = e->next_callee) |
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2114 cgraph_clone_edge (e, new_node, e->call_stmt, e->lto_stmt_uid, |
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|
2115 count_scale, freq, loop_nest, update_original); |
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2116 ipa_clone_references (new_node, NULL, &n->ref_list); |
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|
2117 |
55
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|
2118 new_node->next_sibling_clone = n->clones; |
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2119 if (n->clones) |
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2120 n->clones->prev_sibling_clone = new_node; |
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2121 n->clones = new_node; |
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2122 new_node->clone_of = n; |
0 | 2123 |
2124 cgraph_call_node_duplication_hooks (n, new_node); | |
63
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2125 if (n->decl != decl) |
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2126 { |
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2127 struct cgraph_node **slot; |
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2128 slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, new_node, INSERT); |
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2129 gcc_assert (!*slot); |
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2130 *slot = new_node; |
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2131 if (assembler_name_hash) |
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2132 { |
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2133 void **aslot; |
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2134 tree name = DECL_ASSEMBLER_NAME (decl); |
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2135 |
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2136 aslot = htab_find_slot_with_hash (assembler_name_hash, name, |
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2137 decl_assembler_name_hash (name), |
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2138 INSERT); |
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2139 gcc_assert (!*aslot); |
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2140 *aslot = new_node; |
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2141 } |
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2142 } |
0 | 2143 return new_node; |
2144 } | |
2145 | |
55
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2146 /* Create a new name for omp child function. Returns an identifier. */ |
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2147 |
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|
2148 static GTY(()) unsigned int clone_fn_id_num; |
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2149 |
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|
2150 static tree |
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|
2151 clone_function_name (tree decl) |
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2152 { |
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0
diff
changeset
|
2153 tree name = DECL_ASSEMBLER_NAME (decl); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2154 size_t len = IDENTIFIER_LENGTH (name); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2155 char *tmp_name, *prefix; |
0 | 2156 |
55
77e2b8dfacca
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diff
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|
2157 prefix = XALLOCAVEC (char, len + strlen ("_clone") + 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2158 memcpy (prefix, IDENTIFIER_POINTER (name), len); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2159 strcpy (prefix + len, "_clone"); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
2160 #ifndef NO_DOT_IN_LABEL |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2161 prefix[len] = '.'; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2162 #elif !defined NO_DOLLAR_IN_LABEL |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2163 prefix[len] = '$'; |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2164 #endif |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
2165 ASM_FORMAT_PRIVATE_NAME (tmp_name, prefix, clone_fn_id_num++); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
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diff
changeset
|
2166 return get_identifier (tmp_name); |
0 | 2167 } |
2168 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2169 /* Create callgraph node clone with new declaration. The actual body will |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2170 be copied later at compilation stage. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2171 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2172 TODO: after merging in ipa-sra use function call notes instead of args_to_skip |
77e2b8dfacca
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parents:
0
diff
changeset
|
2173 bitmap interface. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2174 */ |
0 | 2175 struct cgraph_node * |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2176 cgraph_create_virtual_clone (struct cgraph_node *old_node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2177 VEC(cgraph_edge_p,heap) *redirect_callers, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2178 VEC(ipa_replace_map_p,gc) *tree_map, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2179 bitmap args_to_skip) |
0 | 2180 { |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
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|
2181 tree old_decl = old_node->decl; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2182 struct cgraph_node *new_node = NULL; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2183 tree new_decl; |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2184 size_t i; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2185 struct ipa_replace_map *map; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2186 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2187 #ifdef ENABLE_CHECKING |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2188 if (!flag_wpa) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2189 gcc_assert (tree_versionable_function_p (old_decl)); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2190 #endif |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
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|
2191 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2192 /* Make a new FUNCTION_DECL tree node */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2193 if (!args_to_skip) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2194 new_decl = copy_node (old_decl); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2195 else |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2196 new_decl = build_function_decl_skip_args (old_decl, args_to_skip); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2197 DECL_STRUCT_FUNCTION (new_decl) = NULL; |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2198 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2199 /* Generate a new name for the new version. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2200 DECL_NAME (new_decl) = clone_function_name (old_decl); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2201 SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2202 SET_DECL_RTL (new_decl, NULL); |
0 | 2203 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2204 new_node = cgraph_clone_node (old_node, new_decl, old_node->count, |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2205 CGRAPH_FREQ_BASE, 0, false, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2206 redirect_callers); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2207 /* Update the properties. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2208 Make clone visible only within this translation unit. Make sure |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2209 that is not weak also. |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2210 ??? We cannot use COMDAT linkage because there is no |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2211 ABI support for this. */ |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2212 DECL_EXTERNAL (new_node->decl) = 0; |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2213 DECL_COMDAT_GROUP (new_node->decl) = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2214 TREE_PUBLIC (new_node->decl) = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2215 DECL_COMDAT (new_node->decl) = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
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|
2216 DECL_WEAK (new_node->decl) = 0; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2217 new_node->clone.tree_map = tree_map; |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
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|
2218 new_node->clone.args_to_skip = args_to_skip; |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2219 for (i = 0; VEC_iterate (ipa_replace_map_p, tree_map, i, map); i++) |
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2220 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2221 tree var = map->new_tree; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
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|
2222 |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
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|
2223 STRIP_NOPS (var); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
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|
2224 if (TREE_CODE (var) != ADDR_EXPR) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2225 continue; |
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2226 var = get_base_var (var); |
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2227 if (!var) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2228 continue; |
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55
diff
changeset
|
2229 |
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
2230 /* Record references of the future statement initializing the constant |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2231 argument. */ |
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2232 if (TREE_CODE (var) == FUNCTION_DECL) |
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parents:
55
diff
changeset
|
2233 ipa_record_reference (new_node, NULL, cgraph_node (var), |
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55
diff
changeset
|
2234 NULL, IPA_REF_ADDR, NULL); |
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55
diff
changeset
|
2235 else if (TREE_CODE (var) == VAR_DECL) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2236 ipa_record_reference (new_node, NULL, NULL, varpool_node (var), |
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55
diff
changeset
|
2237 IPA_REF_ADDR, NULL); |
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55
diff
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|
2238 } |
55
77e2b8dfacca
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changeset
|
2239 if (!args_to_skip) |
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diff
changeset
|
2240 new_node->clone.combined_args_to_skip = old_node->clone.combined_args_to_skip; |
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diff
changeset
|
2241 else if (old_node->clone.combined_args_to_skip) |
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changeset
|
2242 { |
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changeset
|
2243 int newi = 0, oldi = 0; |
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diff
changeset
|
2244 tree arg; |
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0
diff
changeset
|
2245 bitmap new_args_to_skip = BITMAP_GGC_ALLOC (); |
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changeset
|
2246 struct cgraph_node *orig_node; |
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0
diff
changeset
|
2247 for (orig_node = old_node; orig_node->clone_of; orig_node = orig_node->clone_of) |
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changeset
|
2248 ; |
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0
diff
changeset
|
2249 for (arg = DECL_ARGUMENTS (orig_node->decl); arg; arg = TREE_CHAIN (arg), oldi++) |
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diff
changeset
|
2250 { |
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
2251 if (bitmap_bit_p (old_node->clone.combined_args_to_skip, oldi)) |
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diff
changeset
|
2252 { |
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diff
changeset
|
2253 bitmap_set_bit (new_args_to_skip, oldi); |
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0
diff
changeset
|
2254 continue; |
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0
diff
changeset
|
2255 } |
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update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2256 if (bitmap_bit_p (args_to_skip, newi)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2257 bitmap_set_bit (new_args_to_skip, oldi); |
77e2b8dfacca
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parents:
0
diff
changeset
|
2258 newi++; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
2259 } |
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diff
changeset
|
2260 new_node->clone.combined_args_to_skip = new_args_to_skip; |
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update it from 4.4.3 to 4.5.0
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diff
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|
2261 } |
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diff
changeset
|
2262 else |
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
2263 new_node->clone.combined_args_to_skip = args_to_skip; |
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diff
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|
2264 new_node->local.externally_visible = 0; |
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update it from 4.4.3 to 4.5.0
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diff
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|
2265 new_node->local.local = 1; |
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diff
changeset
|
2266 new_node->lowered = true; |
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
2267 new_node->reachable = true; |
0 | 2268 |
55
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|
2269 |
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|
2270 return new_node; |
0 | 2271 } |
2272 | |
2273 /* NODE is no longer nested function; update cgraph accordingly. */ | |
2274 void | |
2275 cgraph_unnest_node (struct cgraph_node *node) | |
2276 { | |
2277 struct cgraph_node **node2 = &node->origin->nested; | |
2278 gcc_assert (node->origin); | |
2279 | |
2280 while (*node2 != node) | |
2281 node2 = &(*node2)->next_nested; | |
2282 *node2 = node->next_nested; | |
2283 node->origin = NULL; | |
2284 } | |
2285 | |
2286 /* Return function availability. See cgraph.h for description of individual | |
2287 return values. */ | |
2288 enum availability | |
2289 cgraph_function_body_availability (struct cgraph_node *node) | |
2290 { | |
2291 enum availability avail; | |
2292 gcc_assert (cgraph_function_flags_ready); | |
2293 if (!node->analyzed) | |
2294 avail = AVAIL_NOT_AVAILABLE; | |
2295 else if (node->local.local) | |
2296 avail = AVAIL_LOCAL; | |
2297 else if (!node->local.externally_visible) | |
2298 avail = AVAIL_AVAILABLE; | |
55
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update it from 4.4.3 to 4.5.0
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diff
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|
2299 /* Inline functions are safe to be analyzed even if their sybol can |
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update it from 4.4.3 to 4.5.0
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diff
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|
2300 be overwritten at runtime. It is not meaningful to enfore any sane |
77e2b8dfacca
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diff
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|
2301 behaviour on replacing inline function by different body. */ |
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diff
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|
2302 else if (DECL_DECLARED_INLINE_P (node->decl)) |
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|
2303 avail = AVAIL_AVAILABLE; |
0 | 2304 |
2305 /* If the function can be overwritten, return OVERWRITABLE. Take | |
2306 care at least of two notable extensions - the COMDAT functions | |
2307 used to share template instantiations in C++ (this is symmetric | |
2308 to code cp_cannot_inline_tree_fn and probably shall be shared and | |
2309 the inlinability hooks completely eliminated). | |
2310 | |
2311 ??? Does the C++ one definition rule allow us to always return | |
2312 AVAIL_AVAILABLE here? That would be good reason to preserve this | |
55
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update it from 4.4.3 to 4.5.0
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diff
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|
2313 bit. */ |
0 | 2314 |
55
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|
2315 else if (DECL_REPLACEABLE_P (node->decl) && !DECL_EXTERNAL (node->decl)) |
0 | 2316 avail = AVAIL_OVERWRITABLE; |
2317 else avail = AVAIL_AVAILABLE; | |
2318 | |
2319 return avail; | |
2320 } | |
2321 | |
2322 /* Add the function FNDECL to the call graph. | |
2323 Unlike cgraph_finalize_function, this function is intended to be used | |
2324 by middle end and allows insertion of new function at arbitrary point | |
2325 of compilation. The function can be either in high, low or SSA form | |
2326 GIMPLE. | |
2327 | |
2328 The function is assumed to be reachable and have address taken (so no | |
55
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|
2329 API breaking optimizations are performed on it). |
0 | 2330 |
2331 Main work done by this function is to enqueue the function for later | |
2332 processing to avoid need the passes to be re-entrant. */ | |
2333 | |
2334 void | |
2335 cgraph_add_new_function (tree fndecl, bool lowered) | |
2336 { | |
2337 struct cgraph_node *node; | |
2338 switch (cgraph_state) | |
2339 { | |
2340 case CGRAPH_STATE_CONSTRUCTION: | |
2341 /* Just enqueue function to be processed at nearest occurrence. */ | |
2342 node = cgraph_node (fndecl); | |
2343 node->next_needed = cgraph_new_nodes; | |
2344 if (lowered) | |
2345 node->lowered = true; | |
2346 cgraph_new_nodes = node; | |
2347 break; | |
2348 | |
2349 case CGRAPH_STATE_IPA: | |
2350 case CGRAPH_STATE_IPA_SSA: | |
2351 case CGRAPH_STATE_EXPANSION: | |
2352 /* Bring the function into finalized state and enqueue for later | |
2353 analyzing and compilation. */ | |
2354 node = cgraph_node (fndecl); | |
2355 node->local.local = false; | |
2356 node->local.finalized = true; | |
2357 node->reachable = node->needed = true; | |
2358 if (!lowered && cgraph_state == CGRAPH_STATE_EXPANSION) | |
2359 { | |
2360 push_cfun (DECL_STRUCT_FUNCTION (fndecl)); | |
2361 current_function_decl = fndecl; | |
2362 gimple_register_cfg_hooks (); | |
2363 tree_lowering_passes (fndecl); | |
2364 bitmap_obstack_initialize (NULL); | |
2365 if (!gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl))) | |
2366 execute_pass_list (pass_early_local_passes.pass.sub); | |
2367 bitmap_obstack_release (NULL); | |
2368 pop_cfun (); | |
2369 current_function_decl = NULL; | |
2370 | |
2371 lowered = true; | |
2372 } | |
2373 if (lowered) | |
2374 node->lowered = true; | |
2375 node->next_needed = cgraph_new_nodes; | |
2376 cgraph_new_nodes = node; | |
2377 break; | |
2378 | |
2379 case CGRAPH_STATE_FINISHED: | |
2380 /* At the very end of compilation we have to do all the work up | |
2381 to expansion. */ | |
2382 push_cfun (DECL_STRUCT_FUNCTION (fndecl)); | |
2383 current_function_decl = fndecl; | |
2384 gimple_register_cfg_hooks (); | |
2385 if (!lowered) | |
2386 tree_lowering_passes (fndecl); | |
2387 bitmap_obstack_initialize (NULL); | |
2388 if (!gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl))) | |
2389 execute_pass_list (pass_early_local_passes.pass.sub); | |
2390 bitmap_obstack_release (NULL); | |
2391 tree_rest_of_compilation (fndecl); | |
2392 pop_cfun (); | |
2393 current_function_decl = NULL; | |
2394 break; | |
2395 } | |
55
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|
2396 |
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|
2397 /* Set a personality if required and we already passed EH lowering. */ |
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diff
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|
2398 if (lowered |
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update it from 4.4.3 to 4.5.0
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diff
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|
2399 && (function_needs_eh_personality (DECL_STRUCT_FUNCTION (fndecl)) |
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diff
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|
2400 == eh_personality_lang)) |
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update it from 4.4.3 to 4.5.0
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diff
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|
2401 DECL_FUNCTION_PERSONALITY (fndecl) = lang_hooks.eh_personality (); |
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diff
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|
2402 } |
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|
2403 |
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
2404 /* Return true if NODE can be made local for API change. |
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diff
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|
2405 Extern inline functions and C++ COMDAT functions can be made local |
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diff
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|
2406 at the expense of possible code size growth if function is used in multiple |
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diff
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|
2407 compilation units. */ |
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update it from 4.4.3 to 4.5.0
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diff
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|
2408 bool |
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update it from 4.4.3 to 4.5.0
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diff
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|
2409 cgraph_node_can_be_local_p (struct cgraph_node *node) |
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diff
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|
2410 { |
63
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55
diff
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|
2411 return (!node->needed && !node->address_taken |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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|
2412 && ((DECL_COMDAT (node->decl) && !node->same_comdat_group) |
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|
2413 || !node->local.externally_visible)); |
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|
2414 } |
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update it from 4.4.3 to 4.5.0
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diff
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|
2415 |
63
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2416 /* Make DECL local. FIXME: We shouldn't need to mess with rtl this early, |
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diff
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|
2417 but other code such as notice_global_symbol generates rtl. */ |
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diff
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|
2418 void |
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2419 cgraph_make_decl_local (tree decl) |
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2420 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
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|
2421 rtx rtl, symbol; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2422 |
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2423 if (TREE_CODE (decl) == VAR_DECL) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
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|
2424 DECL_COMMON (decl) = 0; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2425 else if (TREE_CODE (decl) == FUNCTION_DECL) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
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|
2426 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
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|
2427 DECL_COMDAT (decl) = 0; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2428 DECL_COMDAT_GROUP (decl) = 0; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2429 DECL_WEAK (decl) = 0; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2430 DECL_EXTERNAL (decl) = 0; |
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2431 } |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2432 else |
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2433 gcc_unreachable (); |
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update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2434 TREE_PUBLIC (decl) = 0; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2435 if (!DECL_RTL_SET_P (decl)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2436 return; |
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diff
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|
2437 |
b7f97abdc517
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diff
changeset
|
2438 /* Update rtl flags. */ |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2439 make_decl_rtl (decl); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
changeset
|
2440 |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2441 rtl = DECL_RTL (decl); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2442 if (!MEM_P (rtl)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2443 return; |
b7f97abdc517
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diff
changeset
|
2444 |
b7f97abdc517
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55
diff
changeset
|
2445 symbol = XEXP (rtl, 0); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2446 if (GET_CODE (symbol) != SYMBOL_REF) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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diff
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|
2447 return; |
b7f97abdc517
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diff
changeset
|
2448 |
b7f97abdc517
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55
diff
changeset
|
2449 SYMBOL_REF_WEAK (symbol) = DECL_WEAK (decl); |
b7f97abdc517
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diff
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|
2450 } |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2451 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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0
diff
changeset
|
2452 /* Bring NODE local. */ |
77e2b8dfacca
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diff
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|
2453 void |
77e2b8dfacca
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diff
changeset
|
2454 cgraph_make_node_local (struct cgraph_node *node) |
77e2b8dfacca
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diff
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|
2455 { |
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
2456 gcc_assert (cgraph_node_can_be_local_p (node)); |
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diff
changeset
|
2457 if (DECL_COMDAT (node->decl) || DECL_EXTERNAL (node->decl)) |
77e2b8dfacca
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diff
changeset
|
2458 { |
63
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update gcc from gcc-4.5.0 to gcc-4.6
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55
diff
changeset
|
2459 struct cgraph_node *alias; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2460 cgraph_make_decl_local (node->decl); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2461 |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2462 for (alias = node->same_body; alias; alias = alias->next) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2463 cgraph_make_decl_local (alias->decl); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2464 |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2465 node->local.externally_visible = false; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2466 node->local.local = true; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2467 gcc_assert (cgraph_function_body_availability (node) == AVAIL_LOCAL); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2468 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2469 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2470 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2471 /* Set TREE_NOTHROW on NODE's decl and on same_body aliases of NODE |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2472 if any to NOTHROW. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2473 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2474 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2475 cgraph_set_nothrow_flag (struct cgraph_node *node, bool nothrow) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2476 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2477 struct cgraph_node *alias; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2478 TREE_NOTHROW (node->decl) = nothrow; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2479 for (alias = node->same_body; alias; alias = alias->next) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2480 TREE_NOTHROW (alias->decl) = nothrow; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2481 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2482 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2483 /* Set TREE_READONLY on NODE's decl and on same_body aliases of NODE |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2484 if any to READONLY. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2485 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2486 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2487 cgraph_set_readonly_flag (struct cgraph_node *node, bool readonly) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2488 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2489 struct cgraph_node *alias; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2490 TREE_READONLY (node->decl) = readonly; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2491 for (alias = node->same_body; alias; alias = alias->next) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2492 TREE_READONLY (alias->decl) = readonly; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2493 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2494 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2495 /* Set DECL_PURE_P on NODE's decl and on same_body aliases of NODE |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2496 if any to PURE. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2497 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2498 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2499 cgraph_set_pure_flag (struct cgraph_node *node, bool pure) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2500 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2501 struct cgraph_node *alias; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2502 DECL_PURE_P (node->decl) = pure; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2503 for (alias = node->same_body; alias; alias = alias->next) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2504 DECL_PURE_P (alias->decl) = pure; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2505 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2506 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2507 /* Set DECL_LOOPING_CONST_OR_PURE_P on NODE's decl and on |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2508 same_body aliases of NODE if any to LOOPING_CONST_OR_PURE. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2509 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2510 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2511 cgraph_set_looping_const_or_pure_flag (struct cgraph_node *node, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2512 bool looping_const_or_pure) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2513 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2514 struct cgraph_node *alias; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2515 DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping_const_or_pure; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2516 for (alias = node->same_body; alias; alias = alias->next) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2517 DECL_LOOPING_CONST_OR_PURE_P (alias->decl) = looping_const_or_pure; |
0 | 2518 } |
2519 | |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2520 /* See if the frequency of NODE can be updated based on frequencies of its |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2521 callers. */ |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2522 bool |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2523 cgraph_propagate_frequency (struct cgraph_node *node) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2524 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2525 bool maybe_unlikely_executed = true, maybe_executed_once = true; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2526 struct cgraph_edge *edge; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2527 if (!node->local.local) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2528 return false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2529 gcc_assert (node->analyzed); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2530 if (node->frequency == NODE_FREQUENCY_HOT) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2531 return false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2532 if (node->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2533 return false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2534 if (dump_file && (dump_flags & TDF_DETAILS)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2535 fprintf (dump_file, "Processing frequency %s\n", cgraph_node_name (node)); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2536 for (edge = node->callers; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2537 edge && (maybe_unlikely_executed || maybe_executed_once); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2538 edge = edge->next_caller) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2539 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2540 if (!edge->frequency) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2541 continue; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2542 switch (edge->caller->frequency) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2543 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2544 case NODE_FREQUENCY_UNLIKELY_EXECUTED: |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2545 break; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2546 case NODE_FREQUENCY_EXECUTED_ONCE: |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2547 if (dump_file && (dump_flags & TDF_DETAILS)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2548 fprintf (dump_file, " Called by %s that is executed once\n", cgraph_node_name (node)); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2549 maybe_unlikely_executed = false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2550 if (edge->loop_nest) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2551 { |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2552 maybe_executed_once = false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2553 if (dump_file && (dump_flags & TDF_DETAILS)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2554 fprintf (dump_file, " Called in loop\n"); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2555 } |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2556 break; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2557 case NODE_FREQUENCY_HOT: |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2558 case NODE_FREQUENCY_NORMAL: |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2559 if (dump_file && (dump_flags & TDF_DETAILS)) |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2560 fprintf (dump_file, " Called by %s that is normal or hot\n", cgraph_node_name (node)); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2561 maybe_unlikely_executed = false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2562 maybe_executed_once = false; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2563 break; |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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2564 } |
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2565 } |
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update gcc from gcc-4.5.0 to gcc-4.6
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2566 if (maybe_unlikely_executed) |
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2567 { |
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2568 node->frequency = NODE_FREQUENCY_UNLIKELY_EXECUTED; |
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2569 if (dump_file) |
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2570 fprintf (dump_file, "Node %s promoted to unlikely executed.\n", cgraph_node_name (node)); |
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2571 return true; |
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2572 } |
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2573 if (maybe_executed_once && node->frequency != NODE_FREQUENCY_EXECUTED_ONCE) |
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update gcc from gcc-4.5.0 to gcc-4.6
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2574 { |
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2575 node->frequency = NODE_FREQUENCY_EXECUTED_ONCE; |
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2576 if (dump_file) |
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2577 fprintf (dump_file, "Node %s promoted to executed once.\n", cgraph_node_name (node)); |
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2578 return true; |
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2579 } |
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update gcc from gcc-4.5.0 to gcc-4.6
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2580 return false; |
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2581 } |
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2582 |
0 | 2583 #include "gt-cgraph.h" |