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564fe867 | 1 | /* Callgraph clones |
aeee4812 | 2 | Copyright (C) 2003-2023 Free Software Foundation, Inc. |
564fe867 JH |
3 | Contributed by Jan Hubicka |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
dfea3d6f | 21 | /* This module provide facilities for cloning functions. I.e. creating |
564fe867 JH |
22 | new functions based on existing functions with simple modifications, |
23 | such as replacement of parameters. | |
24 | ||
25 | To allow whole program optimization without actual presence of function | |
26 | bodies, an additional infrastructure is provided for so-called virtual | |
27 | clones | |
28 | ||
29 | A virtual clone in the callgraph is a function that has no | |
30 | associated body, just a description of how to create its body based | |
31 | on a different function (which itself may be a virtual clone). | |
32 | ||
33 | The description of function modifications includes adjustments to | |
34 | the function's signature (which allows, for example, removing or | |
35 | adding function arguments), substitutions to perform on the | |
36 | function body, and, for inlined functions, a pointer to the | |
37 | function that it will be inlined into. | |
38 | ||
39 | It is also possible to redirect any edge of the callgraph from a | |
40 | function to its virtual clone. This implies updating of the call | |
41 | site to adjust for the new function signature. | |
42 | ||
43 | Most of the transformations performed by inter-procedural | |
44 | optimizations can be represented via virtual clones. For | |
45 | instance, a constant propagation pass can produce a virtual clone | |
46 | of the function which replaces one of its arguments by a | |
47 | constant. The inliner can represent its decisions by producing a | |
48 | clone of a function whose body will be later integrated into | |
49 | a given function. | |
50 | ||
51 | Using virtual clones, the program can be easily updated | |
52 | during the Execute stage, solving most of pass interactions | |
53 | problems that would otherwise occur during Transform. | |
54 | ||
55 | Virtual clones are later materialized in the LTRANS stage and | |
56 | turned into real functions. Passes executed after the virtual | |
57 | clone were introduced also perform their Transform stage | |
58 | on new functions, so for a pass there is no significant | |
59 | difference between operating on a real function or a virtual | |
60 | clone introduced before its Execute stage. | |
61 | ||
62 | Optimization passes then work on virtual clones introduced before | |
63 | their Execute stage as if they were real functions. The | |
64 | only difference is that clones are not visible during the | |
65 | Generate Summary stage. */ | |
66 | ||
67 | #include "config.h" | |
68 | #include "system.h" | |
69 | #include "coretypes.h" | |
c7131fb2 | 70 | #include "backend.h" |
957060b5 AM |
71 | #include "target.h" |
72 | #include "rtl.h" | |
c7131fb2 AM |
73 | #include "tree.h" |
74 | #include "gimple.h" | |
40e23961 | 75 | #include "stringpool.h" |
957060b5 | 76 | #include "cgraph.h" |
957060b5 | 77 | #include "lto-streamer.h" |
2fb9a547 | 78 | #include "tree-eh.h" |
442b4905 | 79 | #include "tree-cfg.h" |
564fe867 | 80 | #include "tree-inline.h" |
c24e924f | 81 | #include "dumpfile.h" |
564fe867 | 82 | #include "gimple-pretty-print.h" |
68188fff MJ |
83 | #include "alloc-pool.h" |
84 | #include "symbol-summary.h" | |
85 | #include "tree-vrp.h" | |
86 | #include "ipa-prop.h" | |
87 | #include "ipa-fnsummary.h" | |
67f3791f | 88 | #include "symtab-thunks.h" |
ae7a23a3 | 89 | #include "symtab-clones.h" |
564fe867 | 90 | |
3dafb85c ML |
91 | /* Create clone of edge in the node N represented by CALL_EXPR |
92 | the callgraph. */ | |
93 | ||
94 | cgraph_edge * | |
538dd0b7 | 95 | cgraph_edge::clone (cgraph_node *n, gcall *call_stmt, unsigned stmt_uid, |
1511c8c0 | 96 | profile_count num, profile_count den, |
1bad9c18 | 97 | bool update_original) |
564fe867 | 98 | { |
3dafb85c | 99 | cgraph_edge *new_edge; |
1bad9c18 | 100 | profile_count::adjust_for_ipa_scaling (&num, &den); |
517048ce | 101 | profile_count prof_count = count.apply_scale (num, den); |
564fe867 | 102 | |
3dafb85c | 103 | if (indirect_unknown_callee) |
564fe867 JH |
104 | { |
105 | tree decl; | |
106 | ||
e57872ee JH |
107 | if (call_stmt && (decl = gimple_call_fndecl (call_stmt)) |
108 | /* When the call is speculative, we need to resolve it | |
109 | via cgraph_resolve_speculation and not here. */ | |
3dafb85c | 110 | && !speculative) |
564fe867 | 111 | { |
3dafb85c | 112 | cgraph_node *callee = cgraph_node::get (decl); |
564fe867 | 113 | gcc_checking_assert (callee); |
3187c8a5 | 114 | new_edge = n->create_edge (callee, call_stmt, prof_count, true); |
564fe867 JH |
115 | } |
116 | else | |
117 | { | |
d52f5295 | 118 | new_edge = n->create_indirect_edge (call_stmt, |
3dafb85c | 119 | indirect_info->ecf_flags, |
3187c8a5 | 120 | prof_count, true); |
3dafb85c | 121 | *new_edge->indirect_info = *indirect_info; |
564fe867 JH |
122 | } |
123 | } | |
124 | else | |
125 | { | |
3187c8a5 | 126 | new_edge = n->create_edge (callee, call_stmt, prof_count, true); |
3dafb85c | 127 | if (indirect_info) |
564fe867 JH |
128 | { |
129 | new_edge->indirect_info | |
766090c2 | 130 | = ggc_cleared_alloc<cgraph_indirect_call_info> (); |
3dafb85c | 131 | *new_edge->indirect_info = *indirect_info; |
564fe867 JH |
132 | } |
133 | } | |
134 | ||
3dafb85c ML |
135 | new_edge->inline_failed = inline_failed; |
136 | new_edge->indirect_inlining_edge = indirect_inlining_edge; | |
118aa5e3 JH |
137 | if (!call_stmt) |
138 | new_edge->lto_stmt_uid = stmt_uid; | |
f1ba88b1 | 139 | new_edge->speculative_id = speculative_id; |
564fe867 | 140 | /* Clone flags that depend on call_stmt availability manually. */ |
3dafb85c ML |
141 | new_edge->can_throw_external = can_throw_external; |
142 | new_edge->call_stmt_cannot_inline_p = call_stmt_cannot_inline_p; | |
143 | new_edge->speculative = speculative; | |
f9bb202b | 144 | new_edge->in_polymorphic_cdtor = in_polymorphic_cdtor; |
1bad9c18 JH |
145 | |
146 | /* Update IPA profile. Local profiles need no updating in original. */ | |
517048ce | 147 | if (update_original) |
b49d29d7 JH |
148 | count = count.combine_with_ipa_count_within (count.ipa () |
149 | - new_edge->count.ipa (), | |
150 | caller->count); | |
3dafb85c | 151 | symtab->call_edge_duplication_hooks (this, new_edge); |
564fe867 JH |
152 | return new_edge; |
153 | } | |
154 | ||
610c8ef0 MJ |
155 | /* Set flags of NEW_NODE and its decl. NEW_NODE is a newly created private |
156 | clone or its thunk. */ | |
157 | ||
158 | static void | |
159 | set_new_clone_decl_and_node_flags (cgraph_node *new_node) | |
160 | { | |
161 | DECL_EXTERNAL (new_node->decl) = 0; | |
610c8ef0 MJ |
162 | TREE_PUBLIC (new_node->decl) = 0; |
163 | DECL_COMDAT (new_node->decl) = 0; | |
164 | DECL_WEAK (new_node->decl) = 0; | |
165 | DECL_VIRTUAL_P (new_node->decl) = 0; | |
166 | DECL_STATIC_CONSTRUCTOR (new_node->decl) = 0; | |
167 | DECL_STATIC_DESTRUCTOR (new_node->decl) = 0; | |
fe8e21fd ML |
168 | DECL_SET_IS_OPERATOR_NEW (new_node->decl, 0); |
169 | DECL_SET_IS_OPERATOR_DELETE (new_node->decl, 0); | |
d7a65edb | 170 | DECL_IS_REPLACEABLE_OPERATOR (new_node->decl) = 0; |
610c8ef0 MJ |
171 | |
172 | new_node->externally_visible = 0; | |
87f94429 | 173 | new_node->local = 1; |
610c8ef0 | 174 | new_node->lowered = true; |
75ac95f6 | 175 | new_node->semantic_interposition = 0; |
610c8ef0 MJ |
176 | } |
177 | ||
178 | /* Duplicate thunk THUNK if necessary but make it to refer to NODE. | |
179 | ARGS_TO_SKIP, if non-NULL, determines which parameters should be omitted. | |
180 | Function can return NODE if no thunk is necessary, which can happen when | |
181 | thunk is this_adjusting but we are removing this parameter. */ | |
182 | ||
183 | static cgraph_node * | |
d284e1b8 | 184 | duplicate_thunk_for_node (cgraph_node *thunk, cgraph_node *node) |
610c8ef0 MJ |
185 | { |
186 | cgraph_node *new_thunk, *thunk_of; | |
d52f5295 | 187 | thunk_of = thunk->callees->callee->ultimate_alias_target (); |
610c8ef0 | 188 | |
67f3791f | 189 | if (thunk_of->thunk) |
d284e1b8 | 190 | node = duplicate_thunk_for_node (thunk_of, node); |
610c8ef0 | 191 | |
48fb6d40 | 192 | if (!DECL_ARGUMENTS (thunk->decl)) |
70486010 | 193 | thunk->get_untransformed_body (); |
48fb6d40 | 194 | |
67f3791f | 195 | thunk_info *i = thunk_info::get (thunk); |
3dafb85c | 196 | cgraph_edge *cs; |
610c8ef0 | 197 | for (cs = node->callers; cs; cs = cs->next_caller) |
67f3791f JH |
198 | if (cs->caller->thunk) |
199 | { | |
200 | thunk_info *i2 = thunk_info::get (cs->caller); | |
201 | if (*i2 == *i) | |
202 | return cs->caller; | |
203 | } | |
610c8ef0 MJ |
204 | |
205 | tree new_decl; | |
ae7a23a3 JH |
206 | clone_info *info = clone_info::get (node); |
207 | if (info && info->param_adjustments) | |
610c8ef0 MJ |
208 | { |
209 | /* We do not need to duplicate this_adjusting thunks if we have removed | |
210 | this. */ | |
67f3791f | 211 | if (i->this_adjusting |
ae7a23a3 | 212 | && !info->param_adjustments->first_param_intact_p ()) |
610c8ef0 MJ |
213 | return node; |
214 | ||
ff6686d2 | 215 | new_decl = copy_node (thunk->decl); |
ae7a23a3 | 216 | ipa_param_body_adjustments body_adj (info->param_adjustments, |
ff6686d2 MJ |
217 | new_decl); |
218 | body_adj.modify_formal_parameters (); | |
bec63208 | 219 | } |
ff6686d2 | 220 | else |
2f1691be JJ |
221 | { |
222 | new_decl = copy_node (thunk->decl); | |
223 | for (tree *arg = &DECL_ARGUMENTS (new_decl); | |
224 | *arg; arg = &DECL_CHAIN (*arg)) | |
225 | { | |
226 | tree next = DECL_CHAIN (*arg); | |
227 | *arg = copy_node (*arg); | |
228 | DECL_CONTEXT (*arg) = new_decl; | |
229 | DECL_CHAIN (*arg) = next; | |
230 | } | |
231 | } | |
bec63208 | 232 | |
610c8ef0 MJ |
233 | gcc_checking_assert (!DECL_STRUCT_FUNCTION (new_decl)); |
234 | gcc_checking_assert (!DECL_INITIAL (new_decl)); | |
235 | gcc_checking_assert (!DECL_RESULT (new_decl)); | |
236 | gcc_checking_assert (!DECL_RTL_SET_P (new_decl)); | |
237 | ||
7958186b MP |
238 | DECL_NAME (new_decl) = clone_function_name_numbered (thunk->decl, |
239 | "artificial_thunk"); | |
610c8ef0 | 240 | SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl)); |
610c8ef0 | 241 | |
67124cb6 EB |
242 | /* We need to force DECL_IGNORED_P because the new thunk is created after |
243 | early debug was run. */ | |
244 | DECL_IGNORED_P (new_decl) = 1; | |
245 | ||
d52f5295 | 246 | new_thunk = cgraph_node::create (new_decl); |
610c8ef0 MJ |
247 | set_new_clone_decl_and_node_flags (new_thunk); |
248 | new_thunk->definition = true; | |
87f94429 | 249 | new_thunk->can_change_signature = node->can_change_signature; |
610c8ef0 MJ |
250 | new_thunk->thunk = thunk->thunk; |
251 | new_thunk->unique_name = in_lto_p; | |
252 | new_thunk->former_clone_of = thunk->decl; | |
a2058f58 | 253 | if (info && info->param_adjustments) |
ae7a23a3 JH |
254 | clone_info::get_create (new_thunk)->param_adjustments |
255 | = info->param_adjustments; | |
b74d8dc4 JH |
256 | new_thunk->unit_id = thunk->unit_id; |
257 | new_thunk->merged_comdat = thunk->merged_comdat; | |
258 | new_thunk->merged_extern_inline = thunk->merged_extern_inline; | |
610c8ef0 | 259 | |
1bad9c18 | 260 | cgraph_edge *e = new_thunk->create_edge (node, NULL, new_thunk->count); |
3dafb85c | 261 | symtab->call_edge_duplication_hooks (thunk->callees, e); |
3dafb85c | 262 | symtab->call_cgraph_duplication_hooks (thunk, new_thunk); |
610c8ef0 MJ |
263 | return new_thunk; |
264 | } | |
265 | ||
266 | /* If E does not lead to a thunk, simply redirect it to N. Otherwise create | |
267 | one or more equivalent thunks for N and redirect E to the first in the | |
6a4bad95 MJ |
268 | chain. Note that it is then necessary to call |
269 | n->expand_all_artificial_thunks once all callers are redirected. */ | |
610c8ef0 MJ |
270 | |
271 | void | |
6a4bad95 | 272 | cgraph_edge::redirect_callee_duplicating_thunks (cgraph_node *n) |
610c8ef0 | 273 | { |
6a4bad95 | 274 | cgraph_node *orig_to = callee->ultimate_alias_target (); |
67f3791f | 275 | if (orig_to->thunk) |
d284e1b8 | 276 | n = duplicate_thunk_for_node (orig_to, n); |
610c8ef0 | 277 | |
6a4bad95 MJ |
278 | redirect_callee (n); |
279 | } | |
280 | ||
281 | /* Call expand_thunk on all callers that are thunks and if analyze those nodes | |
282 | that were expanded. */ | |
283 | ||
284 | void | |
285 | cgraph_node::expand_all_artificial_thunks () | |
286 | { | |
287 | cgraph_edge *e; | |
288 | for (e = callers; e;) | |
67f3791f | 289 | if (e->caller->thunk) |
6a4bad95 MJ |
290 | { |
291 | cgraph_node *thunk = e->caller; | |
292 | ||
293 | e = e->next_caller; | |
67f3791f | 294 | if (expand_thunk (thunk, false, false)) |
6a4bad95 | 295 | { |
67f3791f | 296 | thunk->thunk = false; |
6a4bad95 | 297 | thunk->analyze (); |
68188fff MJ |
298 | ipa_analyze_node (thunk); |
299 | inline_analyze_function (thunk); | |
6a4bad95 MJ |
300 | } |
301 | thunk->expand_all_artificial_thunks (); | |
302 | } | |
303 | else | |
304 | e = e->next_caller; | |
610c8ef0 | 305 | } |
564fe867 | 306 | |
0bdad123 ML |
307 | void |
308 | dump_callgraph_transformation (const cgraph_node *original, | |
309 | const cgraph_node *clone, | |
310 | const char *suffix) | |
311 | { | |
312 | if (symtab->ipa_clones_dump_file) | |
313 | { | |
314 | fprintf (symtab->ipa_clones_dump_file, | |
315 | "Callgraph clone;%s;%d;%s;%d;%d;%s;%d;%s;%d;%d;%s\n", | |
316 | original->asm_name (), original->order, | |
317 | DECL_SOURCE_FILE (original->decl), | |
318 | DECL_SOURCE_LINE (original->decl), | |
319 | DECL_SOURCE_COLUMN (original->decl), clone->asm_name (), | |
320 | clone->order, DECL_SOURCE_FILE (clone->decl), | |
321 | DECL_SOURCE_LINE (clone->decl), DECL_SOURCE_COLUMN (clone->decl), | |
322 | suffix); | |
323 | ||
324 | symtab->cloned_nodes.add (original); | |
325 | symtab->cloned_nodes.add (clone); | |
326 | } | |
327 | } | |
328 | ||
34fbe3f0 JH |
329 | /* Turn profile of N to local profile. */ |
330 | ||
331 | static void | |
332 | localize_profile (cgraph_node *n) | |
333 | { | |
334 | n->count = n->count.guessed_local (); | |
335 | for (cgraph_edge *e = n->callees; e; e=e->next_callee) | |
336 | { | |
337 | e->count = e->count.guessed_local (); | |
338 | if (!e->inline_failed) | |
339 | localize_profile (e->callee); | |
340 | } | |
341 | for (cgraph_edge *e = n->indirect_calls; e; e=e->next_callee) | |
342 | e->count = e->count.guessed_local (); | |
343 | } | |
344 | ||
564fe867 JH |
345 | /* Create node representing clone of N executed COUNT times. Decrease |
346 | the execution counts from original node too. | |
347 | The new clone will have decl set to DECL that may or may not be the same | |
348 | as decl of N. | |
349 | ||
350 | When UPDATE_ORIGINAL is true, the counts are subtracted from the original | |
351 | function's profile to reflect the fact that part of execution is handled | |
352 | by node. | |
dfea3d6f | 353 | When CALL_DUPLICATION_HOOK is true, the ipa passes are acknowledged about |
44a60244 MJ |
354 | the new clone. Otherwise the caller is responsible for doing so later. |
355 | ||
356 | If the new node is being inlined into another one, NEW_INLINED_TO should be | |
357 | the outline function the new one is (even indirectly) inlined to. All hooks | |
a62bfab5 | 358 | will see this in node's inlined_to, when invoked. Can be NULL if the |
ff6686d2 MJ |
359 | node is not inlined. |
360 | ||
361 | If PARAM_ADJUSTMENTS is non-NULL, the parameter manipulation information | |
362 | will be overwritten by the new structure. Otherwise the new node will | |
363 | share parameter manipulation information with the original node. */ | |
564fe867 | 364 | |
d52f5295 | 365 | cgraph_node * |
1bad9c18 | 366 | cgraph_node::create_clone (tree new_decl, profile_count prof_count, |
d52f5295 ML |
367 | bool update_original, |
368 | vec<cgraph_edge *> redirect_callers, | |
369 | bool call_duplication_hook, | |
3dafb85c | 370 | cgraph_node *new_inlined_to, |
ff6686d2 MJ |
371 | ipa_param_adjustments *param_adjustments, |
372 | const char *suffix) | |
564fe867 | 373 | { |
3dafb85c ML |
374 | cgraph_node *new_node = symtab->create_empty (); |
375 | cgraph_edge *e; | |
564fe867 | 376 | unsigned i; |
1bad9c18 | 377 | profile_count old_count = count; |
34fbe3f0 | 378 | bool nonzero = count.ipa ().nonzero_p (); |
564fe867 | 379 | |
0bdad123 ML |
380 | if (new_inlined_to) |
381 | dump_callgraph_transformation (this, new_inlined_to, "inlining to"); | |
382 | ||
8f58dbd1 JH |
383 | /* When inlining we scale precisely to prof_count, when cloning we can |
384 | preserve local profile. */ | |
385 | if (!new_inlined_to) | |
386 | prof_count = count.combine_with_ipa_count (prof_count); | |
3995f3a2 | 387 | new_node->count = prof_count; |
178ac530 | 388 | new_node->calls_declare_variant_alt = this->calls_declare_variant_alt; |
1bad9c18 JH |
389 | |
390 | /* Update IPA profile. Local profiles need no updating in original. */ | |
517048ce | 391 | if (update_original) |
b49d29d7 JH |
392 | { |
393 | if (inlined_to) | |
394 | count = count.combine_with_ipa_count_within (count.ipa () | |
395 | - prof_count.ipa (), | |
396 | inlined_to->count); | |
397 | else | |
398 | count = count.combine_with_ipa_count (count.ipa () - prof_count.ipa ()); | |
399 | } | |
ed6ef490 | 400 | new_node->decl = new_decl; |
d52f5295 | 401 | new_node->register_symbol (); |
d52f5295 | 402 | new_node->lto_file_data = lto_file_data; |
d52f5295 ML |
403 | new_node->analyzed = analyzed; |
404 | new_node->definition = definition; | |
87f94429 ML |
405 | new_node->versionable = versionable; |
406 | new_node->can_change_signature = can_change_signature; | |
407 | new_node->redefined_extern_inline = redefined_extern_inline; | |
2a6d372b | 408 | new_node->semantic_interposition = semantic_interposition; |
87f94429 | 409 | new_node->tm_may_enter_irr = tm_may_enter_irr; |
67348ccc | 410 | new_node->externally_visible = false; |
7861b648 | 411 | new_node->no_reorder = no_reorder; |
87f94429 | 412 | new_node->local = true; |
a62bfab5 | 413 | new_node->inlined_to = new_inlined_to; |
d52f5295 | 414 | new_node->rtl = rtl; |
d52f5295 ML |
415 | new_node->frequency = frequency; |
416 | new_node->tp_first_run = tp_first_run; | |
9d6171dc | 417 | new_node->tm_clone = tm_clone; |
0a7246ee | 418 | new_node->icf_merged = icf_merged; |
6bbf39b7 | 419 | new_node->thunk = thunk; |
b74d8dc4 JH |
420 | new_node->unit_id = unit_id; |
421 | new_node->merged_comdat = merged_comdat; | |
422 | new_node->merged_extern_inline = merged_extern_inline; | |
ae7a23a3 | 423 | clone_info *info = clone_info::get (this); |
d284e1b8 | 424 | |
ff6686d2 | 425 | if (param_adjustments) |
ae7a23a3 JH |
426 | clone_info::get_create (new_node)->param_adjustments = param_adjustments; |
427 | else if (info && info->param_adjustments) | |
428 | clone_info::get_create (new_node)->param_adjustments | |
429 | = info->param_adjustments; | |
ed6ef490 | 430 | new_node->split_part = split_part; |
d284e1b8 | 431 | |
9771b263 | 432 | FOR_EACH_VEC_ELT (redirect_callers, i, e) |
564fe867 JH |
433 | { |
434 | /* Redirect calls to the old version node to point to its new | |
9de6f6c3 | 435 | version. The only exception is when the edge was proved to |
dfea3d6f | 436 | be unreachable during the cloning procedure. */ |
9de6f6c3 | 437 | if (!e->callee |
1edcb2ea JJ |
438 | || !fndecl_built_in_p (e->callee->decl, BUILT_IN_UNREACHABLE, |
439 | BUILT_IN_UNREACHABLE_TRAP)) | |
6a4bad95 | 440 | e->redirect_callee_duplicating_thunks (new_node); |
564fe867 | 441 | } |
6a4bad95 | 442 | new_node->expand_all_artificial_thunks (); |
564fe867 | 443 | |
d52f5295 | 444 | for (e = callees;e; e=e->next_callee) |
1bad9c18 JH |
445 | e->clone (new_node, e->call_stmt, e->lto_stmt_uid, new_node->count, old_count, |
446 | update_original); | |
564fe867 | 447 | |
d52f5295 | 448 | for (e = indirect_calls; e; e = e->next_callee) |
3dafb85c | 449 | e->clone (new_node, e->call_stmt, e->lto_stmt_uid, |
1bad9c18 | 450 | new_node->count, old_count, update_original); |
d52f5295 | 451 | new_node->clone_references (this); |
564fe867 | 452 | |
d52f5295 ML |
453 | new_node->next_sibling_clone = clones; |
454 | if (clones) | |
455 | clones->prev_sibling_clone = new_node; | |
456 | clones = new_node; | |
457 | new_node->clone_of = this; | |
564fe867 JH |
458 | |
459 | if (call_duplication_hook) | |
3dafb85c | 460 | symtab->call_cgraph_duplication_hooks (this, new_node); |
34fbe3f0 JH |
461 | /* With partial train run we do not want to assume that original's |
462 | count is zero whenever we redurect all executed edges to clone. | |
463 | Simply drop profile to local one in this case. */ | |
464 | if (update_original | |
465 | && opt_for_fn (decl, flag_profile_partial_training) | |
466 | && nonzero | |
467 | && count.ipa_p () | |
f7f6be76 JH |
468 | && !count.ipa ().nonzero_p () |
469 | && !inlined_to) | |
34fbe3f0 | 470 | localize_profile (this); |
0bdad123 ML |
471 | |
472 | if (!new_inlined_to) | |
473 | dump_callgraph_transformation (this, new_node, suffix); | |
474 | ||
564fe867 JH |
475 | return new_node; |
476 | } | |
477 | ||
b75255a9 | 478 | static GTY(()) hash_map<const char *, unsigned> *clone_fn_ids; |
564fe867 | 479 | |
7958186b MP |
480 | /* Return a new assembler name for a clone of decl named NAME. Apart |
481 | from the string SUFFIX, the new name will end with a unique (for | |
482 | each NAME) unspecified number. If clone numbering is not needed | |
483 | then the two argument clone_function_name should be used instead. | |
484 | Should not be called directly except for by | |
e53b6e56 | 485 | lto-partition.cc:privatize_symbol_name_1. */ |
9816367c | 486 | |
564fe867 | 487 | tree |
7958186b MP |
488 | clone_function_name_numbered (const char *name, const char *suffix) |
489 | { | |
b75255a9 MP |
490 | /* Initialize the function->counter mapping the first time it's |
491 | needed. */ | |
492 | if (!clone_fn_ids) | |
493 | clone_fn_ids = hash_map<const char *, unsigned int>::create_ggc (64); | |
494 | unsigned int &suffix_counter = clone_fn_ids->get_or_insert ( | |
495 | IDENTIFIER_POINTER (get_identifier (name))); | |
496 | return clone_function_name (name, suffix, suffix_counter++); | |
7958186b MP |
497 | } |
498 | ||
499 | /* Return a new assembler name for a clone of DECL. Apart from string | |
500 | SUFFIX, the new name will end with a unique (for each DECL | |
501 | assembler name) unspecified number. If clone numbering is not | |
502 | needed then the two argument clone_function_name should be used | |
503 | instead. */ | |
504 | ||
505 | tree | |
506 | clone_function_name_numbered (tree decl, const char *suffix) | |
507 | { | |
508 | tree name = DECL_ASSEMBLER_NAME (decl); | |
509 | return clone_function_name_numbered (IDENTIFIER_POINTER (name), | |
510 | suffix); | |
511 | } | |
512 | ||
513 | /* Return a new assembler name for a clone of decl named NAME. Apart | |
514 | from the string SUFFIX, the new name will end with the specified | |
515 | NUMBER. If clone numbering is not needed then the two argument | |
516 | clone_function_name should be used instead. */ | |
517 | ||
518 | tree | |
519 | clone_function_name (const char *name, const char *suffix, | |
520 | unsigned long number) | |
564fe867 | 521 | { |
9816367c | 522 | size_t len = strlen (name); |
564fe867 JH |
523 | char *tmp_name, *prefix; |
524 | ||
525 | prefix = XALLOCAVEC (char, len + strlen (suffix) + 2); | |
9816367c | 526 | memcpy (prefix, name, len); |
564fe867 | 527 | strcpy (prefix + len + 1, suffix); |
f8a1abf8 | 528 | prefix[len] = symbol_table::symbol_suffix_separator (); |
7958186b | 529 | ASM_FORMAT_PRIVATE_NAME (tmp_name, prefix, number); |
564fe867 JH |
530 | return get_identifier (tmp_name); |
531 | } | |
532 | ||
53aedcce MP |
533 | /* Return a new assembler name for a clone of DECL. Apart from the |
534 | string SUFFIX, the new name will end with the specified NUMBER. If | |
535 | clone numbering is not needed then the two argument | |
536 | clone_function_name should be used instead. */ | |
537 | ||
538 | tree | |
539 | clone_function_name (tree decl, const char *suffix, | |
540 | unsigned long number) | |
541 | { | |
542 | return clone_function_name ( | |
543 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), suffix, number); | |
544 | } | |
545 | ||
7958186b MP |
546 | /* Return a new assembler name ending with the string SUFFIX for a |
547 | clone of DECL. */ | |
9816367c BS |
548 | |
549 | tree | |
550 | clone_function_name (tree decl, const char *suffix) | |
551 | { | |
7958186b MP |
552 | tree identifier = DECL_ASSEMBLER_NAME (decl); |
553 | /* For consistency this needs to behave the same way as | |
554 | ASM_FORMAT_PRIVATE_NAME does, but without the final number | |
555 | suffix. */ | |
556 | char *separator = XALLOCAVEC (char, 2); | |
557 | separator[0] = symbol_table::symbol_suffix_separator (); | |
558 | separator[1] = 0; | |
559 | #if defined (NO_DOT_IN_LABEL) && defined (NO_DOLLAR_IN_LABEL) | |
560 | const char *prefix = "__"; | |
561 | #else | |
562 | const char *prefix = ""; | |
563 | #endif | |
564 | char *result = ACONCAT ((prefix, | |
565 | IDENTIFIER_POINTER (identifier), | |
566 | separator, | |
567 | suffix, | |
568 | (char*)0)); | |
569 | return get_identifier (result); | |
9816367c BS |
570 | } |
571 | ||
572 | ||
53aedcce MP |
573 | /* Create callgraph node clone with new declaration. The actual body will be |
574 | copied later at compilation stage. The name of the new clone will be | |
575 | constructed from the name of the original node, SUFFIX and NUM_SUFFIX. | |
564fe867 JH |
576 | |
577 | TODO: after merging in ipa-sra use function call notes instead of args_to_skip | |
578 | bitmap interface. | |
579 | */ | |
3dafb85c | 580 | cgraph_node * |
00dcc88a | 581 | cgraph_node::create_virtual_clone (const vec<cgraph_edge *> &redirect_callers, |
d52f5295 | 582 | vec<ipa_replace_map *, va_gc> *tree_map, |
ff6686d2 MJ |
583 | ipa_param_adjustments *param_adjustments, |
584 | const char * suffix, unsigned num_suffix) | |
564fe867 | 585 | { |
d52f5295 | 586 | tree old_decl = decl; |
3dafb85c | 587 | cgraph_node *new_node = NULL; |
564fe867 | 588 | tree new_decl; |
440a5082 | 589 | size_t len, i; |
3dafb85c | 590 | ipa_replace_map *map; |
440a5082 | 591 | char *name; |
564fe867 | 592 | |
87f94429 | 593 | gcc_checking_assert (versionable); |
ff6686d2 MJ |
594 | /* TODO: It would be nice if we could recognize that param_adjustments do not |
595 | actually perform any changes, but at the moment let's require it simply | |
596 | does not exist. */ | |
87f94429 | 597 | gcc_assert (can_change_signature || !param_adjustments); |
564fe867 JH |
598 | |
599 | /* Make a new FUNCTION_DECL tree node */ | |
ff6686d2 | 600 | if (!param_adjustments) |
564fe867 JH |
601 | new_decl = copy_node (old_decl); |
602 | else | |
ff6686d2 | 603 | new_decl = param_adjustments->adjust_decl (old_decl); |
49bde175 JH |
604 | |
605 | /* These pointers represent function body and will be populated only when clone | |
606 | is materialized. */ | |
607 | gcc_assert (new_decl != old_decl); | |
564fe867 | 608 | DECL_STRUCT_FUNCTION (new_decl) = NULL; |
49bde175 JH |
609 | DECL_ARGUMENTS (new_decl) = NULL; |
610 | DECL_INITIAL (new_decl) = NULL; | |
611 | DECL_RESULT (new_decl) = NULL; | |
67914693 | 612 | /* We cannot do DECL_RESULT (new_decl) = NULL; here because of LTO partitioning |
49bde175 | 613 | sometimes storing only clone decl instead of original. */ |
564fe867 JH |
614 | |
615 | /* Generate a new name for the new version. */ | |
440a5082 EB |
616 | len = IDENTIFIER_LENGTH (DECL_NAME (old_decl)); |
617 | name = XALLOCAVEC (char, len + strlen (suffix) + 2); | |
618 | memcpy (name, IDENTIFIER_POINTER (DECL_NAME (old_decl)), len); | |
619 | strcpy (name + len + 1, suffix); | |
620 | name[len] = '.'; | |
621 | DECL_NAME (new_decl) = get_identifier (name); | |
53aedcce MP |
622 | SET_DECL_ASSEMBLER_NAME (new_decl, |
623 | clone_function_name (old_decl, suffix, num_suffix)); | |
564fe867 JH |
624 | SET_DECL_RTL (new_decl, NULL); |
625 | ||
1bad9c18 | 626 | new_node = create_clone (new_decl, count, false, |
ff6686d2 MJ |
627 | redirect_callers, false, NULL, param_adjustments, |
628 | suffix); | |
d52f5295 | 629 | |
564fe867 JH |
630 | /* Update the properties. |
631 | Make clone visible only within this translation unit. Make sure | |
632 | that is not weak also. | |
633 | ??? We cannot use COMDAT linkage because there is no | |
634 | ABI support for this. */ | |
610c8ef0 | 635 | set_new_clone_decl_and_node_flags (new_node); |
6cf67b62 | 636 | new_node->ipcp_clone = ipcp_clone; |
ae7a23a3 JH |
637 | if (tree_map) |
638 | clone_info::get_create (new_node)->tree_map = tree_map; | |
4ab26ee0 | 639 | if (!implicit_section) |
8b9a92f7 | 640 | new_node->set_section (*this); |
702d8703 JH |
641 | |
642 | /* Clones of global symbols or symbols with unique names are unique. */ | |
643 | if ((TREE_PUBLIC (old_decl) | |
644 | && !DECL_EXTERNAL (old_decl) | |
645 | && !DECL_WEAK (old_decl) | |
646 | && !DECL_COMDAT (old_decl)) | |
647 | || in_lto_p) | |
67348ccc | 648 | new_node->unique_name = true; |
9771b263 | 649 | FOR_EACH_VEC_SAFE_ELT (tree_map, i, map) |
13586172 MJ |
650 | { |
651 | tree repl = map->new_tree; | |
652 | if (map->force_load_ref) | |
653 | { | |
654 | gcc_assert (TREE_CODE (repl) == ADDR_EXPR); | |
655 | repl = get_base_address (TREE_OPERAND (repl, 0)); | |
656 | } | |
657 | new_node->maybe_create_reference (repl, NULL); | |
658 | } | |
d284e1b8 | 659 | |
d52f5295 | 660 | if (ipa_transforms_to_apply.exists ()) |
ca860d03 | 661 | new_node->ipa_transforms_to_apply |
d52f5295 | 662 | = ipa_transforms_to_apply.copy (); |
564fe867 | 663 | |
3dafb85c | 664 | symtab->call_cgraph_duplication_hooks (this, new_node); |
564fe867 JH |
665 | |
666 | return new_node; | |
667 | } | |
668 | ||
d52f5295 | 669 | /* callgraph node being removed from symbol table; see if its entry can be |
ab4664eb JH |
670 | replaced by other inline clone. |
671 | INFO is clone info to attach to the new root. */ | |
d52f5295 | 672 | cgraph_node * |
ab4664eb | 673 | cgraph_node::find_replacement (clone_info *info) |
564fe867 | 674 | { |
3dafb85c | 675 | cgraph_node *next_inline_clone, *replacement; |
564fe867 | 676 | |
d52f5295 | 677 | for (next_inline_clone = clones; |
564fe867 | 678 | next_inline_clone |
d52f5295 | 679 | && next_inline_clone->decl != decl; |
564fe867 JH |
680 | next_inline_clone = next_inline_clone->next_sibling_clone) |
681 | ; | |
682 | ||
683 | /* If there is inline clone of the node being removed, we need | |
684 | to put it into the position of removed node and reorganize all | |
685 | other clones to be based on it. */ | |
686 | if (next_inline_clone) | |
687 | { | |
3dafb85c ML |
688 | cgraph_node *n; |
689 | cgraph_node *new_clones; | |
564fe867 JH |
690 | |
691 | replacement = next_inline_clone; | |
692 | ||
693 | /* Unlink inline clone from the list of clones of removed node. */ | |
694 | if (next_inline_clone->next_sibling_clone) | |
695 | next_inline_clone->next_sibling_clone->prev_sibling_clone | |
696 | = next_inline_clone->prev_sibling_clone; | |
697 | if (next_inline_clone->prev_sibling_clone) | |
698 | { | |
d52f5295 | 699 | gcc_assert (clones != next_inline_clone); |
564fe867 JH |
700 | next_inline_clone->prev_sibling_clone->next_sibling_clone |
701 | = next_inline_clone->next_sibling_clone; | |
702 | } | |
703 | else | |
704 | { | |
d52f5295 ML |
705 | gcc_assert (clones == next_inline_clone); |
706 | clones = next_inline_clone->next_sibling_clone; | |
564fe867 JH |
707 | } |
708 | ||
d52f5295 ML |
709 | new_clones = clones; |
710 | clones = NULL; | |
564fe867 JH |
711 | |
712 | /* Copy clone info. */ | |
ae7a23a3 JH |
713 | if (info) |
714 | *clone_info::get_create (next_inline_clone) = *info; | |
564fe867 JH |
715 | |
716 | /* Now place it into clone tree at same level at NODE. */ | |
d52f5295 | 717 | next_inline_clone->clone_of = clone_of; |
564fe867 JH |
718 | next_inline_clone->prev_sibling_clone = NULL; |
719 | next_inline_clone->next_sibling_clone = NULL; | |
d52f5295 | 720 | if (clone_of) |
564fe867 | 721 | { |
d52f5295 ML |
722 | if (clone_of->clones) |
723 | clone_of->clones->prev_sibling_clone = next_inline_clone; | |
724 | next_inline_clone->next_sibling_clone = clone_of->clones; | |
725 | clone_of->clones = next_inline_clone; | |
564fe867 JH |
726 | } |
727 | ||
728 | /* Merge the clone list. */ | |
729 | if (new_clones) | |
730 | { | |
731 | if (!next_inline_clone->clones) | |
732 | next_inline_clone->clones = new_clones; | |
733 | else | |
734 | { | |
735 | n = next_inline_clone->clones; | |
736 | while (n->next_sibling_clone) | |
d52f5295 | 737 | n = n->next_sibling_clone; |
564fe867 JH |
738 | n->next_sibling_clone = new_clones; |
739 | new_clones->prev_sibling_clone = n; | |
740 | } | |
741 | } | |
742 | ||
743 | /* Update clone_of pointers. */ | |
744 | n = new_clones; | |
745 | while (n) | |
746 | { | |
747 | n->clone_of = next_inline_clone; | |
748 | n = n->next_sibling_clone; | |
749 | } | |
3c56d8d8 ML |
750 | |
751 | /* Update order in order to be able to find a LTO section | |
752 | with function body. */ | |
753 | replacement->order = order; | |
754 | ||
564fe867 JH |
755 | return replacement; |
756 | } | |
757 | else | |
758 | return NULL; | |
759 | } | |
760 | ||
761 | /* Like cgraph_set_call_stmt but walk the clone tree and update all | |
042ae7d2 JH |
762 | clones sharing the same function body. |
763 | When WHOLE_SPECULATIVE_EDGES is true, all three components of | |
764 | speculative edge gets updated. Otherwise we update only direct | |
765 | call. */ | |
564fe867 JH |
766 | |
767 | void | |
355fe088 | 768 | cgraph_node::set_call_stmt_including_clones (gimple *old_stmt, |
538dd0b7 | 769 | gcall *new_stmt, |
d52f5295 | 770 | bool update_speculative) |
564fe867 | 771 | { |
3dafb85c | 772 | cgraph_node *node; |
27c5a177 | 773 | cgraph_edge *master_edge = get_edge (old_stmt); |
564fe867 | 774 | |
27c5a177 MJ |
775 | if (master_edge) |
776 | cgraph_edge::set_call_stmt (master_edge, new_stmt, update_speculative); | |
564fe867 | 777 | |
d52f5295 | 778 | node = clones; |
564fe867 | 779 | if (node) |
d52f5295 | 780 | while (node != this) |
564fe867 | 781 | { |
3dafb85c | 782 | cgraph_edge *edge = node->get_edge (old_stmt); |
564fe867 | 783 | if (edge) |
042ae7d2 | 784 | { |
27c5a177 MJ |
785 | edge = cgraph_edge::set_call_stmt (edge, new_stmt, |
786 | update_speculative); | |
042ae7d2 JH |
787 | /* If UPDATE_SPECULATIVE is false, it means that we are turning |
788 | speculative call into a real code sequence. Update the | |
789 | callgraph edges. */ | |
790 | if (edge->speculative && !update_speculative) | |
791 | { | |
845bb366 JH |
792 | cgraph_edge *indirect = edge->speculative_call_indirect_edge (); |
793 | ||
794 | for (cgraph_edge *next, *direct | |
795 | = edge->first_speculative_call_target (); | |
796 | direct; | |
797 | direct = next) | |
798 | { | |
799 | next = direct->next_speculative_call_target (); | |
800 | direct->speculative_call_target_ref ()->speculative = false; | |
801 | direct->speculative = false; | |
802 | } | |
042ae7d2 | 803 | indirect->speculative = false; |
042ae7d2 JH |
804 | } |
805 | } | |
564fe867 JH |
806 | if (node->clones) |
807 | node = node->clones; | |
808 | else if (node->next_sibling_clone) | |
809 | node = node->next_sibling_clone; | |
810 | else | |
811 | { | |
d52f5295 | 812 | while (node != this && !node->next_sibling_clone) |
564fe867 | 813 | node = node->clone_of; |
d52f5295 | 814 | if (node != this) |
564fe867 JH |
815 | node = node->next_sibling_clone; |
816 | } | |
817 | } | |
818 | } | |
819 | ||
820 | /* Like cgraph_create_edge walk the clone tree and update all clones sharing | |
821 | same function body. If clones already have edge for OLD_STMT; only | |
822 | update the edge same way as cgraph_set_call_stmt_including_clones does. | |
823 | ||
824 | TODO: COUNT and LOOP_DEPTH should be properly distributed based on relative | |
825 | frequencies of the clones. */ | |
826 | ||
827 | void | |
3dafb85c | 828 | cgraph_node::create_edge_including_clones (cgraph_node *callee, |
355fe088 | 829 | gimple *old_stmt, gcall *stmt, |
3995f3a2 | 830 | profile_count count, |
d52f5295 | 831 | cgraph_inline_failed_t reason) |
564fe867 | 832 | { |
3dafb85c | 833 | cgraph_node *node; |
564fe867 | 834 | |
d52f5295 | 835 | if (!get_edge (stmt)) |
564fe867 | 836 | { |
27c5a177 | 837 | cgraph_edge *edge = create_edge (callee, stmt, count); |
564fe867 JH |
838 | edge->inline_failed = reason; |
839 | } | |
840 | ||
d52f5295 | 841 | node = clones; |
564fe867 | 842 | if (node) |
d52f5295 | 843 | while (node != this) |
ec6a1e35 | 844 | /* Thunk clones do not get updated while copying inline function body. */ |
67f3791f | 845 | if (!node->thunk) |
ec6a1e35 JH |
846 | { |
847 | cgraph_edge *edge = node->get_edge (old_stmt); | |
848 | ||
849 | /* It is possible that clones already contain the edge while | |
850 | master didn't. Either we promoted indirect call into direct | |
851 | call in the clone or we are processing clones of unreachable | |
852 | master where edges has been removed. */ | |
853 | if (edge) | |
27c5a177 | 854 | edge = cgraph_edge::set_call_stmt (edge, stmt); |
ec6a1e35 JH |
855 | else if (! node->get_edge (stmt)) |
856 | { | |
1bad9c18 | 857 | edge = node->create_edge (callee, stmt, count); |
ec6a1e35 JH |
858 | edge->inline_failed = reason; |
859 | } | |
564fe867 | 860 | |
ec6a1e35 JH |
861 | if (node->clones) |
862 | node = node->clones; | |
863 | else if (node->next_sibling_clone) | |
864 | node = node->next_sibling_clone; | |
865 | else | |
866 | { | |
867 | while (node != this && !node->next_sibling_clone) | |
868 | node = node->clone_of; | |
869 | if (node != this) | |
870 | node = node->next_sibling_clone; | |
871 | } | |
872 | } | |
564fe867 JH |
873 | } |
874 | ||
875 | /* Remove the node from cgraph and all inline clones inlined into it. | |
876 | Skip however removal of FORBIDDEN_NODE and return true if it needs to be | |
877 | removed. This allows to call the function from outer loop walking clone | |
878 | tree. */ | |
879 | ||
880 | bool | |
d52f5295 | 881 | cgraph_node::remove_symbol_and_inline_clones (cgraph_node *forbidden_node) |
564fe867 | 882 | { |
3dafb85c | 883 | cgraph_edge *e, *next; |
564fe867 JH |
884 | bool found = false; |
885 | ||
d52f5295 | 886 | if (this == forbidden_node) |
39f9719e | 887 | { |
27c5a177 | 888 | cgraph_edge::remove (callers); |
39f9719e JH |
889 | return true; |
890 | } | |
d52f5295 | 891 | for (e = callees; e; e = next) |
564fe867 JH |
892 | { |
893 | next = e->next_callee; | |
894 | if (!e->inline_failed) | |
d52f5295 | 895 | found |= e->callee->remove_symbol_and_inline_clones (forbidden_node); |
564fe867 | 896 | } |
d52f5295 | 897 | remove (); |
564fe867 JH |
898 | return found; |
899 | } | |
900 | ||
901 | /* The edges representing the callers of the NEW_VERSION node were | |
902 | fixed by cgraph_function_versioning (), now the call_expr in their | |
903 | respective tree code should be updated to call the NEW_VERSION. */ | |
904 | ||
905 | static void | |
3dafb85c | 906 | update_call_expr (cgraph_node *new_version) |
564fe867 | 907 | { |
3dafb85c | 908 | cgraph_edge *e; |
564fe867 JH |
909 | |
910 | gcc_assert (new_version); | |
911 | ||
912 | /* Update the call expr on the edges to call the new version. */ | |
913 | for (e = new_version->callers; e; e = e->next_caller) | |
914 | { | |
3dafb85c | 915 | function *inner_function = DECL_STRUCT_FUNCTION (e->caller->decl); |
67348ccc | 916 | gimple_call_set_fndecl (e->call_stmt, new_version->decl); |
564fe867 JH |
917 | maybe_clean_eh_stmt_fn (inner_function, e->call_stmt); |
918 | } | |
919 | } | |
920 | ||
921 | ||
922 | /* Create a new cgraph node which is the new version of | |
d52f5295 | 923 | callgraph node. REDIRECT_CALLERS holds the callers |
564fe867 | 924 | edges which should be redirected to point to |
d52f5295 | 925 | NEW_VERSION. ALL the callees edges of the node |
564fe867 JH |
926 | are cloned to the new version node. Return the new |
927 | version node. | |
928 | ||
929 | If non-NULL BLOCK_TO_COPY determine what basic blocks | |
930 | was copied to prevent duplications of calls that are dead | |
931 | in the clone. */ | |
932 | ||
d52f5295 ML |
933 | cgraph_node * |
934 | cgraph_node::create_version_clone (tree new_decl, | |
935 | vec<cgraph_edge *> redirect_callers, | |
0bdad123 ML |
936 | bitmap bbs_to_copy, |
937 | const char *suffix) | |
564fe867 | 938 | { |
3dafb85c ML |
939 | cgraph_node *new_version; |
940 | cgraph_edge *e; | |
564fe867 JH |
941 | unsigned i; |
942 | ||
d52f5295 | 943 | new_version = cgraph_node::create (new_decl); |
564fe867 | 944 | |
d52f5295 ML |
945 | new_version->analyzed = analyzed; |
946 | new_version->definition = definition; | |
947 | new_version->local = local; | |
67348ccc | 948 | new_version->externally_visible = false; |
7861b648 | 949 | new_version->no_reorder = no_reorder; |
87f94429 | 950 | new_version->local = new_version->definition; |
a62bfab5 | 951 | new_version->inlined_to = inlined_to; |
d52f5295 ML |
952 | new_version->rtl = rtl; |
953 | new_version->count = count; | |
b74d8dc4 JH |
954 | new_version->unit_id = unit_id; |
955 | new_version->merged_comdat = merged_comdat; | |
956 | new_version->merged_extern_inline = merged_extern_inline; | |
564fe867 | 957 | |
d52f5295 | 958 | for (e = callees; e; e=e->next_callee) |
564fe867 JH |
959 | if (!bbs_to_copy |
960 | || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) | |
3dafb85c | 961 | e->clone (new_version, e->call_stmt, |
1511c8c0 | 962 | e->lto_stmt_uid, count, count, |
3dafb85c | 963 | true); |
d52f5295 | 964 | for (e = indirect_calls; e; e=e->next_callee) |
564fe867 JH |
965 | if (!bbs_to_copy |
966 | || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) | |
3dafb85c | 967 | e->clone (new_version, e->call_stmt, |
1511c8c0 | 968 | e->lto_stmt_uid, count, count, |
3dafb85c | 969 | true); |
9771b263 | 970 | FOR_EACH_VEC_ELT (redirect_callers, i, e) |
564fe867 JH |
971 | { |
972 | /* Redirect calls to the old version node to point to its new | |
973 | version. */ | |
3dafb85c | 974 | e->redirect_callee (new_version); |
564fe867 JH |
975 | } |
976 | ||
0bdad123 ML |
977 | dump_callgraph_transformation (this, new_version, suffix); |
978 | ||
564fe867 JH |
979 | return new_version; |
980 | } | |
981 | ||
982 | /* Perform function versioning. | |
983 | Function versioning includes copying of the tree and | |
984 | a callgraph update (creating a new cgraph node and updating | |
985 | its callees and callers). | |
986 | ||
987 | REDIRECT_CALLERS varray includes the edges to be redirected | |
988 | to the new version. | |
989 | ||
990 | TREE_MAP is a mapping of tree nodes we want to replace with | |
991 | new ones (according to results of prior analysis). | |
564fe867 JH |
992 | |
993 | If non-NULL ARGS_TO_SKIP determine function parameters to remove | |
994 | from new version. | |
995 | If SKIP_RETURN is true, the new version will return void. | |
996 | If non-NULL BLOCK_TO_COPY determine what basic blocks to copy. | |
997 | If non_NULL NEW_ENTRY determine new entry BB of the clone. | |
998 | ||
5928bc2e ML |
999 | If TARGET_ATTRIBUTES is non-null, when creating a new declaration, |
1000 | add the attributes to DECL_ATTRIBUTES. And call valid_attribute_p | |
1001 | that will promote value of the attribute DECL_FUNCTION_SPECIFIC_TARGET | |
1002 | of the declaration. | |
1003 | ||
bfc9250e ML |
1004 | If VERSION_DECL is set true, use clone_function_name_numbered for the |
1005 | function clone. Otherwise, use clone_function_name. | |
1006 | ||
564fe867 JH |
1007 | Return the new version's cgraph node. */ |
1008 | ||
d52f5295 ML |
1009 | cgraph_node * |
1010 | cgraph_node::create_version_clone_with_body | |
1011 | (vec<cgraph_edge *> redirect_callers, | |
ff6686d2 MJ |
1012 | vec<ipa_replace_map *, va_gc> *tree_map, |
1013 | ipa_param_adjustments *param_adjustments, | |
1014 | bitmap bbs_to_copy, basic_block new_entry_block, const char *suffix, | |
bfc9250e | 1015 | tree target_attributes, bool version_decl) |
564fe867 | 1016 | { |
d52f5295 | 1017 | tree old_decl = decl; |
3dafb85c | 1018 | cgraph_node *new_version_node = NULL; |
564fe867 JH |
1019 | tree new_decl; |
1020 | ||
1021 | if (!tree_versionable_function_p (old_decl)) | |
1022 | return NULL; | |
1023 | ||
ff6686d2 | 1024 | /* TODO: Restore an assert that we do not change signature if |
87f94429 | 1025 | can_change_signature is false. We cannot just check that |
ff6686d2 MJ |
1026 | param_adjustments is NULL because unfortunately ipa-split removes return |
1027 | values from such functions. */ | |
564fe867 JH |
1028 | |
1029 | /* Make a new FUNCTION_DECL tree node for the new version. */ | |
ff6686d2 MJ |
1030 | if (param_adjustments) |
1031 | new_decl = param_adjustments->adjust_decl (old_decl); | |
564fe867 | 1032 | else |
ff6686d2 | 1033 | new_decl = copy_node (old_decl); |
564fe867 JH |
1034 | |
1035 | /* Generate a new name for the new version. */ | |
bfc9250e ML |
1036 | tree fnname = (version_decl ? clone_function_name_numbered (old_decl, suffix) |
1037 | : clone_function_name (old_decl, suffix)); | |
1038 | DECL_NAME (new_decl) = fnname; | |
1039 | SET_DECL_ASSEMBLER_NAME (new_decl, fnname); | |
564fe867 JH |
1040 | SET_DECL_RTL (new_decl, NULL); |
1041 | ||
97ae2126 JH |
1042 | DECL_VIRTUAL_P (new_decl) = 0; |
1043 | ||
5928bc2e ML |
1044 | if (target_attributes) |
1045 | { | |
1046 | DECL_ATTRIBUTES (new_decl) = target_attributes; | |
1047 | ||
1048 | location_t saved_loc = input_location; | |
1049 | tree v = TREE_VALUE (target_attributes); | |
1050 | input_location = DECL_SOURCE_LOCATION (new_decl); | |
cc2a672a | 1051 | bool r = targetm.target_option.valid_attribute_p (new_decl, NULL, v, 1); |
5928bc2e ML |
1052 | input_location = saved_loc; |
1053 | if (!r) | |
1054 | return NULL; | |
1055 | } | |
1056 | ||
564fe867 | 1057 | /* When the old decl was a con-/destructor make sure the clone isn't. */ |
c3284718 RS |
1058 | DECL_STATIC_CONSTRUCTOR (new_decl) = 0; |
1059 | DECL_STATIC_DESTRUCTOR (new_decl) = 0; | |
fe8e21fd ML |
1060 | DECL_SET_IS_OPERATOR_NEW (new_decl, 0); |
1061 | DECL_SET_IS_OPERATOR_DELETE (new_decl, 0); | |
d7a65edb | 1062 | DECL_IS_REPLACEABLE_OPERATOR (new_decl) = 0; |
564fe867 JH |
1063 | |
1064 | /* Create the new version's call-graph node. | |
1065 | and update the edges of the new node. */ | |
d52f5295 | 1066 | new_version_node = create_version_clone (new_decl, redirect_callers, |
0bdad123 | 1067 | bbs_to_copy, suffix); |
564fe867 | 1068 | |
d52f5295 | 1069 | if (ipa_transforms_to_apply.exists ()) |
c6d43074 | 1070 | new_version_node->ipa_transforms_to_apply |
d52f5295 | 1071 | = ipa_transforms_to_apply.copy (); |
564fe867 | 1072 | /* Copy the OLD_VERSION_NODE function tree to the new version. */ |
ff6686d2 MJ |
1073 | tree_function_versioning (old_decl, new_decl, tree_map, param_adjustments, |
1074 | false, bbs_to_copy, new_entry_block); | |
564fe867 JH |
1075 | |
1076 | /* Update the new version's properties. | |
1077 | Make The new version visible only within this translation unit. Make sure | |
1078 | that is not weak also. | |
1079 | ??? We cannot use COMDAT linkage because there is no | |
1080 | ABI support for this. */ | |
d52f5295 | 1081 | new_version_node->make_decl_local (); |
67348ccc DM |
1082 | DECL_VIRTUAL_P (new_version_node->decl) = 0; |
1083 | new_version_node->externally_visible = 0; | |
87f94429 | 1084 | new_version_node->local = 1; |
564fe867 | 1085 | new_version_node->lowered = true; |
4ab26ee0 | 1086 | if (!implicit_section) |
8b9a92f7 | 1087 | new_version_node->set_section (*this); |
702d8703 JH |
1088 | /* Clones of global symbols or symbols with unique names are unique. */ |
1089 | if ((TREE_PUBLIC (old_decl) | |
1090 | && !DECL_EXTERNAL (old_decl) | |
1091 | && !DECL_WEAK (old_decl) | |
1092 | && !DECL_COMDAT (old_decl)) | |
1093 | || in_lto_p) | |
67348ccc | 1094 | new_version_node->unique_name = true; |
564fe867 JH |
1095 | |
1096 | /* Update the call_expr on the edges to call the new version node. */ | |
1097 | update_call_expr (new_version_node); | |
1098 | ||
cbb4e4ca | 1099 | symtab->call_cgraph_insertion_hooks (new_version_node); |
564fe867 JH |
1100 | return new_version_node; |
1101 | } | |
1102 | ||
d0b1b67a MJ |
1103 | /* Remove the node from the tree of virtual and inline clones and make it a |
1104 | standalone node - not a clone any more. */ | |
1105 | ||
1106 | void cgraph_node::remove_from_clone_tree () | |
1107 | { | |
1108 | if (next_sibling_clone) | |
1109 | next_sibling_clone->prev_sibling_clone = prev_sibling_clone; | |
1110 | if (prev_sibling_clone) | |
1111 | prev_sibling_clone->next_sibling_clone = next_sibling_clone; | |
1112 | else | |
1113 | clone_of->clones = next_sibling_clone; | |
1114 | next_sibling_clone = NULL; | |
1115 | prev_sibling_clone = NULL; | |
1116 | clone_of = NULL; | |
1117 | } | |
1118 | ||
564fe867 JH |
1119 | /* Given virtual clone, turn it into actual clone. */ |
1120 | ||
564fe867 | 1121 | void |
0e590b68 | 1122 | cgraph_node::materialize_clone () |
564fe867 | 1123 | { |
ae7a23a3 | 1124 | clone_info *info = clone_info::get (this); |
0e590b68 JH |
1125 | clone_of->get_untransformed_body (); |
1126 | former_clone_of = clone_of->decl; | |
1127 | if (clone_of->former_clone_of) | |
1128 | former_clone_of = clone_of->former_clone_of; | |
3dafb85c | 1129 | if (symtab->dump_file) |
564fe867 | 1130 | { |
0e590b68 JH |
1131 | fprintf (symtab->dump_file, "cloning %s to %s\n", |
1132 | clone_of->dump_name (), | |
1133 | dump_name ()); | |
25a0d08b | 1134 | if (info && info->tree_map) |
564fe867 | 1135 | { |
0e590b68 JH |
1136 | fprintf (symtab->dump_file, " replace map:"); |
1137 | for (unsigned int i = 0; | |
ae7a23a3 | 1138 | i < vec_safe_length (info->tree_map); |
0e590b68 | 1139 | i++) |
564fe867 | 1140 | { |
0e590b68 | 1141 | ipa_replace_map *replace_info; |
ae7a23a3 | 1142 | replace_info = (*info->tree_map)[i]; |
0e590b68 JH |
1143 | fprintf (symtab->dump_file, "%s %i -> ", |
1144 | i ? "," : "", replace_info->parm_num); | |
1145 | print_generic_expr (symtab->dump_file, | |
1146 | replace_info->new_tree); | |
564fe867 | 1147 | } |
0e590b68 | 1148 | fprintf (symtab->dump_file, "\n"); |
564fe867 | 1149 | } |
25a0d08b | 1150 | if (info && info->param_adjustments) |
ae7a23a3 | 1151 | info->param_adjustments->dump (symtab->dump_file); |
564fe867 | 1152 | } |
783dc02d | 1153 | clear_stmts_in_references (); |
0e590b68 JH |
1154 | /* Copy the OLD_VERSION_NODE function tree to the new version. */ |
1155 | tree_function_versioning (clone_of->decl, decl, | |
ae7a23a3 JH |
1156 | info ? info->tree_map : NULL, |
1157 | info ? info->param_adjustments : NULL, | |
0e590b68 | 1158 | true, NULL, NULL); |
3dafb85c | 1159 | if (symtab->dump_file) |
0e590b68 JH |
1160 | { |
1161 | dump_function_to_file (clone_of->decl, symtab->dump_file, | |
1162 | dump_flags); | |
1163 | dump_function_to_file (decl, symtab->dump_file, dump_flags); | |
1164 | } | |
b2b29377 | 1165 | |
0e590b68 JH |
1166 | cgraph_node *this_clone_of = clone_of; |
1167 | /* Function is no longer clone. */ | |
1168 | remove_from_clone_tree (); | |
1169 | if (!this_clone_of->analyzed && !this_clone_of->clones) | |
d7145b4b | 1170 | this_clone_of->release_body (); |
564fe867 JH |
1171 | } |
1172 | ||
1173 | #include "gt-cgraphclones.h" |