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27d020cf | 1 | /* Function summary pass. |
8d9254fc | 2 | Copyright (C) 2003-2020 Free Software Foundation, Inc. |
27d020cf 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 | ||
21 | /* Analysis of function bodies used by inter-procedural passes | |
22 | ||
23 | We estimate for each function | |
24 | - function body size and size after specializing into given context | |
25 | - average function execution time in a given context | |
26 | - function frame size | |
27 | For each call | |
28 | - call statement size, time and how often the parameters change | |
29 | ||
0bceb671 | 30 | ipa_fn_summary data structures store above information locally (i.e. |
27d020cf JH |
31 | parameters of the function itself) and globally (i.e. parameters of |
32 | the function created by applying all the inline decisions already | |
33 | present in the callgraph). | |
34 | ||
0bceb671 | 35 | We provide access to the ipa_fn_summary data structure and |
27d020cf JH |
36 | basic logic updating the parameters when inlining is performed. |
37 | ||
38 | The summaries are context sensitive. Context means | |
39 | 1) partial assignment of known constant values of operands | |
40 | 2) whether function is inlined into the call or not. | |
41 | It is easy to add more variants. To represent function size and time | |
42 | that depends on context (i.e. it is known to be optimized away when | |
43 | context is known either by inlining or from IP-CP and cloning), | |
44 | we use predicates. | |
45 | ||
46 | estimate_edge_size_and_time can be used to query | |
0bceb671 | 47 | function size/time in the given context. ipa_merge_fn_summary_after_inlining merges |
27d020cf JH |
48 | properties of caller and callee after inlining. |
49 | ||
50 | Finally pass_inline_parameters is exported. This is used to drive | |
51 | computation of function parameters used by the early inliner. IPA | |
52 | inlined performs analysis via its analyze_function method. */ | |
53 | ||
54 | #include "config.h" | |
85245bda | 55 | #define INCLUDE_VECTOR |
27d020cf JH |
56 | #include "system.h" |
57 | #include "coretypes.h" | |
58 | #include "backend.h" | |
59 | #include "tree.h" | |
60 | #include "gimple.h" | |
61 | #include "alloc-pool.h" | |
62 | #include "tree-pass.h" | |
63 | #include "ssa.h" | |
64 | #include "tree-streamer.h" | |
65 | #include "cgraph.h" | |
66 | #include "diagnostic.h" | |
67 | #include "fold-const.h" | |
68 | #include "print-tree.h" | |
69 | #include "tree-inline.h" | |
70 | #include "gimple-pretty-print.h" | |
27d020cf JH |
71 | #include "cfganal.h" |
72 | #include "gimple-iterator.h" | |
73 | #include "tree-cfg.h" | |
74 | #include "tree-ssa-loop-niter.h" | |
75 | #include "tree-ssa-loop.h" | |
76 | #include "symbol-summary.h" | |
77 | #include "ipa-prop.h" | |
78 | #include "ipa-fnsummary.h" | |
79 | #include "cfgloop.h" | |
80 | #include "tree-scalar-evolution.h" | |
81 | #include "ipa-utils.h" | |
27d020cf JH |
82 | #include "cfgexpand.h" |
83 | #include "gimplify.h" | |
314e6352 ML |
84 | #include "stringpool.h" |
85 | #include "attribs.h" | |
ac0573de | 86 | #include "tree-into-ssa.h" |
27d020cf JH |
87 | |
88 | /* Summaries. */ | |
db30281f | 89 | fast_function_summary <ipa_fn_summary *, va_gc> *ipa_fn_summaries; |
f658ad30 | 90 | fast_function_summary <ipa_size_summary *, va_heap> *ipa_size_summaries; |
db30281f | 91 | fast_call_summary <ipa_call_summary *, va_heap> *ipa_call_summaries; |
27d020cf JH |
92 | |
93 | /* Edge predicates goes here. */ | |
94 | static object_allocator<predicate> edge_predicate_pool ("edge predicates"); | |
95 | ||
96 | ||
0bceb671 | 97 | /* Dump IPA hints. */ |
27d020cf | 98 | void |
0bceb671 | 99 | ipa_dump_hints (FILE *f, ipa_hints hints) |
27d020cf JH |
100 | { |
101 | if (!hints) | |
102 | return; | |
0bceb671 | 103 | fprintf (f, "IPA hints:"); |
27d020cf JH |
104 | if (hints & INLINE_HINT_indirect_call) |
105 | { | |
106 | hints &= ~INLINE_HINT_indirect_call; | |
107 | fprintf (f, " indirect_call"); | |
108 | } | |
109 | if (hints & INLINE_HINT_loop_iterations) | |
110 | { | |
111 | hints &= ~INLINE_HINT_loop_iterations; | |
112 | fprintf (f, " loop_iterations"); | |
113 | } | |
114 | if (hints & INLINE_HINT_loop_stride) | |
115 | { | |
116 | hints &= ~INLINE_HINT_loop_stride; | |
117 | fprintf (f, " loop_stride"); | |
118 | } | |
119 | if (hints & INLINE_HINT_same_scc) | |
120 | { | |
121 | hints &= ~INLINE_HINT_same_scc; | |
122 | fprintf (f, " same_scc"); | |
123 | } | |
124 | if (hints & INLINE_HINT_in_scc) | |
125 | { | |
126 | hints &= ~INLINE_HINT_in_scc; | |
127 | fprintf (f, " in_scc"); | |
128 | } | |
129 | if (hints & INLINE_HINT_cross_module) | |
130 | { | |
131 | hints &= ~INLINE_HINT_cross_module; | |
132 | fprintf (f, " cross_module"); | |
133 | } | |
134 | if (hints & INLINE_HINT_declared_inline) | |
135 | { | |
136 | hints &= ~INLINE_HINT_declared_inline; | |
137 | fprintf (f, " declared_inline"); | |
138 | } | |
27d020cf JH |
139 | if (hints & INLINE_HINT_known_hot) |
140 | { | |
141 | hints &= ~INLINE_HINT_known_hot; | |
142 | fprintf (f, " known_hot"); | |
143 | } | |
144 | gcc_assert (!hints); | |
145 | } | |
146 | ||
147 | ||
148 | /* Record SIZE and TIME to SUMMARY. | |
149 | The accounted code will be executed when EXEC_PRED is true. | |
956d615d | 150 | When NONCONST_PRED is false the code will evaluate to constant and |
070e3489 JH |
151 | will get optimized out in specialized clones of the function. |
152 | If CALL is true account to call_size_time_table rather than | |
153 | size_time_table. */ | |
27d020cf JH |
154 | |
155 | void | |
0bceb671 | 156 | ipa_fn_summary::account_size_time (int size, sreal time, |
27d020cf | 157 | const predicate &exec_pred, |
070e3489 JH |
158 | const predicate &nonconst_pred_in, |
159 | bool call) | |
27d020cf JH |
160 | { |
161 | size_time_entry *e; | |
162 | bool found = false; | |
163 | int i; | |
164 | predicate nonconst_pred; | |
070e3489 JH |
165 | vec<size_time_entry, va_gc> *table = call |
166 | ? call_size_time_table : size_time_table; | |
27d020cf JH |
167 | |
168 | if (exec_pred == false) | |
169 | return; | |
170 | ||
171 | nonconst_pred = nonconst_pred_in & exec_pred; | |
172 | ||
173 | if (nonconst_pred == false) | |
174 | return; | |
175 | ||
956d615d | 176 | /* We need to create initial empty unconditional clause, but otherwise |
27d020cf | 177 | we don't need to account empty times and sizes. */ |
070e3489 | 178 | if (!size && time == 0 && table) |
27d020cf JH |
179 | return; |
180 | ||
956d615d | 181 | /* Only for calls we are unaccounting what we previously recorded. */ |
d2bcf46c | 182 | gcc_checking_assert (time >= 0 || call); |
27d020cf | 183 | |
070e3489 | 184 | for (i = 0; vec_safe_iterate (table, i, &e); i++) |
27d020cf JH |
185 | if (e->exec_predicate == exec_pred |
186 | && e->nonconst_predicate == nonconst_pred) | |
187 | { | |
188 | found = true; | |
189 | break; | |
190 | } | |
070e3489 | 191 | if (i == max_size_time_table_size) |
27d020cf JH |
192 | { |
193 | i = 0; | |
194 | found = true; | |
070e3489 | 195 | e = &(*table)[0]; |
27d020cf JH |
196 | if (dump_file && (dump_flags & TDF_DETAILS)) |
197 | fprintf (dump_file, | |
198 | "\t\tReached limit on number of entries, " | |
199 | "ignoring the predicate."); | |
200 | } | |
201 | if (dump_file && (dump_flags & TDF_DETAILS) && (time != 0 || size)) | |
202 | { | |
203 | fprintf (dump_file, | |
204 | "\t\tAccounting size:%3.2f, time:%3.2f on %spredicate exec:", | |
0bceb671 | 205 | ((double) size) / ipa_fn_summary::size_scale, |
27d020cf JH |
206 | (time.to_double ()), found ? "" : "new "); |
207 | exec_pred.dump (dump_file, conds, 0); | |
208 | if (exec_pred != nonconst_pred) | |
209 | { | |
210 | fprintf (dump_file, " nonconst:"); | |
211 | nonconst_pred.dump (dump_file, conds); | |
212 | } | |
213 | else | |
214 | fprintf (dump_file, "\n"); | |
215 | } | |
216 | if (!found) | |
217 | { | |
99b1c316 | 218 | class size_time_entry new_entry; |
27d020cf JH |
219 | new_entry.size = size; |
220 | new_entry.time = time; | |
221 | new_entry.exec_predicate = exec_pred; | |
222 | new_entry.nonconst_predicate = nonconst_pred; | |
070e3489 JH |
223 | if (call) |
224 | vec_safe_push (call_size_time_table, new_entry); | |
225 | else | |
226 | vec_safe_push (size_time_table, new_entry); | |
27d020cf JH |
227 | } |
228 | else | |
229 | { | |
230 | e->size += size; | |
231 | e->time += time; | |
dd86c8da | 232 | /* FIXME: PR bootstrap/92653 gcc_checking_assert (e->time >= -1); */ |
d2bcf46c JH |
233 | /* Tolerate small roundoff issues. */ |
234 | if (e->time < 0) | |
235 | e->time = 0; | |
27d020cf JH |
236 | } |
237 | } | |
238 | ||
956d615d | 239 | /* We proved E to be unreachable, redirect it to __builtin_unreachable. */ |
27d020cf JH |
240 | |
241 | static struct cgraph_edge * | |
242 | redirect_to_unreachable (struct cgraph_edge *e) | |
243 | { | |
244 | struct cgraph_node *callee = !e->inline_failed ? e->callee : NULL; | |
245 | struct cgraph_node *target = cgraph_node::get_create | |
246 | (builtin_decl_implicit (BUILT_IN_UNREACHABLE)); | |
247 | ||
248 | if (e->speculative) | |
27c5a177 | 249 | e = cgraph_edge::resolve_speculation (e, target->decl); |
27d020cf | 250 | else if (!e->callee) |
27c5a177 | 251 | e = cgraph_edge::make_direct (e, target); |
27d020cf JH |
252 | else |
253 | e->redirect_callee (target); | |
99b1c316 | 254 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf | 255 | e->inline_failed = CIF_UNREACHABLE; |
3995f3a2 | 256 | e->count = profile_count::zero (); |
27d020cf JH |
257 | es->call_stmt_size = 0; |
258 | es->call_stmt_time = 0; | |
259 | if (callee) | |
260 | callee->remove_symbol_and_inline_clones (); | |
261 | return e; | |
262 | } | |
263 | ||
264 | /* Set predicate for edge E. */ | |
265 | ||
266 | static void | |
267 | edge_set_predicate (struct cgraph_edge *e, predicate *predicate) | |
268 | { | |
269 | /* If the edge is determined to be never executed, redirect it | |
0bceb671 JH |
270 | to BUILTIN_UNREACHABLE to make it clear to IPA passes the call will |
271 | be optimized out. */ | |
27d020cf JH |
272 | if (predicate && *predicate == false |
273 | /* When handling speculative edges, we need to do the redirection | |
274 | just once. Do it always on the direct edge, so we do not | |
275 | attempt to resolve speculation while duplicating the edge. */ | |
276 | && (!e->speculative || e->callee)) | |
277 | e = redirect_to_unreachable (e); | |
278 | ||
99b1c316 | 279 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
280 | if (predicate && *predicate != true) |
281 | { | |
282 | if (!es->predicate) | |
283 | es->predicate = edge_predicate_pool.allocate (); | |
284 | *es->predicate = *predicate; | |
285 | } | |
286 | else | |
287 | { | |
288 | if (es->predicate) | |
289 | edge_predicate_pool.remove (es->predicate); | |
290 | es->predicate = NULL; | |
291 | } | |
292 | } | |
293 | ||
294 | /* Set predicate for hint *P. */ | |
295 | ||
296 | static void | |
297 | set_hint_predicate (predicate **p, predicate new_predicate) | |
298 | { | |
299 | if (new_predicate == false || new_predicate == true) | |
300 | { | |
301 | if (*p) | |
302 | edge_predicate_pool.remove (*p); | |
303 | *p = NULL; | |
304 | } | |
305 | else | |
306 | { | |
307 | if (!*p) | |
308 | *p = edge_predicate_pool.allocate (); | |
309 | **p = new_predicate; | |
310 | } | |
311 | } | |
312 | ||
313 | ||
956d615d | 314 | /* Compute what conditions may or may not hold given information about |
27d020cf | 315 | parameters. RET_CLAUSE returns truths that may hold in a specialized copy, |
956d615d | 316 | while RET_NONSPEC_CLAUSE returns truths that may hold in an nonspecialized |
27d020cf JH |
317 | copy when called in a given context. It is a bitmask of conditions. Bit |
318 | 0 means that condition is known to be false, while bit 1 means that condition | |
319 | may or may not be true. These differs - for example NOT_INLINED condition | |
67914693 | 320 | is always false in the second and also builtin_constant_p tests cannot use |
27d020cf JH |
321 | the fact that parameter is indeed a constant. |
322 | ||
323 | KNOWN_VALS is partial mapping of parameters of NODE to constant values. | |
956d615d | 324 | KNOWN_AGGS is a vector of aggregate known offset/value set for each |
eb270950 FX |
325 | parameter. Return clause of possible truths. When INLINE_P is true, assume |
326 | that we are inlining. | |
27d020cf JH |
327 | |
328 | ERROR_MARK means compile time invariant. */ | |
329 | ||
330 | static void | |
331 | evaluate_conditions_for_known_args (struct cgraph_node *node, | |
332 | bool inline_p, | |
333 | vec<tree> known_vals, | |
82c4b78d | 334 | vec<value_range> known_value_ranges, |
eb270950 | 335 | vec<ipa_agg_value_set> known_aggs, |
27d020cf JH |
336 | clause_t *ret_clause, |
337 | clause_t *ret_nonspec_clause) | |
338 | { | |
339 | clause_t clause = inline_p ? 0 : 1 << predicate::not_inlined_condition; | |
340 | clause_t nonspec_clause = 1 << predicate::not_inlined_condition; | |
99b1c316 | 341 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
27d020cf JH |
342 | int i; |
343 | struct condition *c; | |
344 | ||
345 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
346 | { | |
b0d55476 | 347 | tree val = NULL; |
27d020cf | 348 | tree res; |
4307a485 FX |
349 | int j; |
350 | struct expr_eval_op *op; | |
27d020cf JH |
351 | |
352 | /* We allow call stmt to have fewer arguments than the callee function | |
353 | (especially for K&R style programs). So bound check here (we assume | |
354 | known_aggs vector, if non-NULL, has the same length as | |
355 | known_vals). */ | |
b0d55476 | 356 | gcc_checking_assert (!known_aggs.length () || !known_vals.length () |
27d020cf | 357 | || (known_vals.length () == known_aggs.length ())); |
27d020cf JH |
358 | |
359 | if (c->agg_contents) | |
360 | { | |
eb270950 | 361 | struct ipa_agg_value_set *agg; |
27d020cf JH |
362 | |
363 | if (c->code == predicate::changed | |
364 | && !c->by_ref | |
b0d55476 | 365 | && c->operand_num < (int)known_vals.length () |
27d020cf JH |
366 | && (known_vals[c->operand_num] == error_mark_node)) |
367 | continue; | |
368 | ||
b0d55476 | 369 | if (c->operand_num < (int)known_aggs.length ()) |
27d020cf | 370 | { |
eb270950 | 371 | agg = &known_aggs[c->operand_num]; |
b0d55476 JH |
372 | val = ipa_find_agg_cst_for_param (agg, |
373 | c->operand_num | |
374 | < (int) known_vals.length () | |
375 | ? known_vals[c->operand_num] | |
376 | : NULL, | |
27d020cf JH |
377 | c->offset, c->by_ref); |
378 | } | |
379 | else | |
380 | val = NULL_TREE; | |
381 | } | |
b0d55476 | 382 | else if (c->operand_num < (int) known_vals.length ()) |
27d020cf JH |
383 | { |
384 | val = known_vals[c->operand_num]; | |
385 | if (val == error_mark_node && c->code != predicate::changed) | |
386 | val = NULL_TREE; | |
387 | } | |
388 | ||
68718e8e JH |
389 | if (!val |
390 | && (c->code == predicate::changed | |
391 | || c->code == predicate::is_not_constant)) | |
27d020cf JH |
392 | { |
393 | clause |= 1 << (i + predicate::first_dynamic_condition); | |
394 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
395 | continue; | |
396 | } | |
397 | if (c->code == predicate::changed) | |
398 | { | |
399 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
400 | continue; | |
401 | } | |
402 | ||
27d020cf JH |
403 | if (c->code == predicate::is_not_constant) |
404 | { | |
405 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
406 | continue; | |
407 | } | |
408 | ||
68718e8e | 409 | if (val && TYPE_SIZE (c->type) == TYPE_SIZE (TREE_TYPE (val))) |
4307a485 | 410 | { |
68718e8e JH |
411 | if (c->type != TREE_TYPE (val)) |
412 | val = fold_unary (VIEW_CONVERT_EXPR, c->type, val); | |
413 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
414 | { | |
415 | if (!val) | |
416 | break; | |
417 | if (!op->val[0]) | |
418 | val = fold_unary (op->code, op->type, val); | |
419 | else if (!op->val[1]) | |
420 | val = fold_binary (op->code, op->type, | |
421 | op->index ? op->val[0] : val, | |
422 | op->index ? val : op->val[0]); | |
423 | else if (op->index == 0) | |
424 | val = fold_ternary (op->code, op->type, | |
425 | val, op->val[0], op->val[1]); | |
426 | else if (op->index == 1) | |
427 | val = fold_ternary (op->code, op->type, | |
428 | op->val[0], val, op->val[1]); | |
429 | else if (op->index == 2) | |
430 | val = fold_ternary (op->code, op->type, | |
431 | op->val[0], op->val[1], val); | |
432 | else | |
433 | val = NULL_TREE; | |
434 | } | |
435 | ||
436 | res = val | |
437 | ? fold_binary_to_constant (c->code, boolean_type_node, val, c->val) | |
438 | : NULL; | |
439 | ||
440 | if (res && integer_zerop (res)) | |
441 | continue; | |
442 | if (res && integer_onep (res)) | |
443 | { | |
444 | clause |= 1 << (i + predicate::first_dynamic_condition); | |
445 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
446 | continue; | |
447 | } | |
4307a485 | 448 | } |
82c4b78d | 449 | if (c->operand_num < (int) known_value_ranges.length () |
68718e8e JH |
450 | && !c->agg_contents |
451 | && !known_value_ranges[c->operand_num].undefined_p () | |
452 | && !known_value_ranges[c->operand_num].varying_p () | |
453 | && TYPE_SIZE (c->type) | |
454 | == TYPE_SIZE (known_value_ranges[c->operand_num].type ()) | |
455 | && (!val || TREE_CODE (val) != INTEGER_CST)) | |
456 | { | |
457 | value_range vr = known_value_ranges[c->operand_num]; | |
458 | if (!useless_type_conversion_p (c->type, vr.type ())) | |
459 | { | |
460 | value_range res; | |
461 | range_fold_unary_expr (&res, NOP_EXPR, | |
462 | c->type, &vr, vr.type ()); | |
463 | vr = res; | |
464 | } | |
465 | tree type = c->type; | |
4307a485 | 466 | |
68718e8e JH |
467 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) |
468 | { | |
469 | if (vr.varying_p () || vr.undefined_p ()) | |
470 | break; | |
27d020cf | 471 | |
68718e8e JH |
472 | value_range res; |
473 | if (!op->val[0]) | |
474 | range_fold_unary_expr (&res, op->code, op->type, &vr, type); | |
475 | else if (!op->val[1]) | |
476 | { | |
477 | value_range op0 (op->val[0], op->val[0]); | |
478 | range_fold_binary_expr (&res, op->code, op->type, | |
479 | op->index ? &op0 : &vr, | |
480 | op->index ? &vr : &op0); | |
481 | } | |
482 | else | |
483 | gcc_unreachable (); | |
484 | type = op->type; | |
485 | vr = res; | |
486 | } | |
487 | if (!vr.varying_p () && !vr.undefined_p ()) | |
488 | { | |
489 | value_range res; | |
490 | value_range val_vr (c->val, c->val); | |
491 | range_fold_binary_expr (&res, c->code, boolean_type_node, | |
492 | &vr, | |
493 | &val_vr); | |
494 | if (res.zero_p ()) | |
495 | continue; | |
496 | } | |
497 | } | |
27d020cf JH |
498 | |
499 | clause |= 1 << (i + predicate::first_dynamic_condition); | |
500 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
501 | } | |
502 | *ret_clause = clause; | |
503 | if (ret_nonspec_clause) | |
504 | *ret_nonspec_clause = nonspec_clause; | |
505 | } | |
506 | ||
2523d721 JH |
507 | /* Return true if VRP will be exectued on the function. |
508 | We do not want to anticipate optimizations that will not happen. | |
509 | ||
510 | FIXME: This can be confused with -fdisable and debug counters and thus | |
511 | it should not be used for correctness (only to make heuristics work). | |
512 | This means that inliner should do its own optimizations of expressions | |
513 | that it predicts to be constant so wrong code can not be triggered by | |
514 | builtin_constant_p. */ | |
515 | ||
516 | static bool | |
517 | vrp_will_run_p (struct cgraph_node *node) | |
518 | { | |
519 | return (opt_for_fn (node->decl, optimize) | |
520 | && !opt_for_fn (node->decl, optimize_debug) | |
521 | && opt_for_fn (node->decl, flag_tree_vrp)); | |
522 | } | |
523 | ||
524 | /* Similarly about FRE. */ | |
525 | ||
526 | static bool | |
527 | fre_will_run_p (struct cgraph_node *node) | |
528 | { | |
529 | return (opt_for_fn (node->decl, optimize) | |
530 | && !opt_for_fn (node->decl, optimize_debug) | |
531 | && opt_for_fn (node->decl, flag_tree_fre)); | |
532 | } | |
27d020cf | 533 | |
b0d55476 JH |
534 | /* Work out what conditions might be true at invocation of E. |
535 | Compute costs for inlined edge if INLINE_P is true. | |
536 | ||
956d615d | 537 | Return in CLAUSE_PTR the evaluated conditions and in NONSPEC_CLAUSE_PTR |
b0d55476 JH |
538 | (if non-NULL) conditions evaluated for nonspecialized clone called |
539 | in a given context. | |
540 | ||
541 | KNOWN_VALS_PTR and KNOWN_AGGS_PTR must be non-NULL and will be filled by | |
956d615d | 542 | known constant and aggregate values of parameters. |
b0d55476 JH |
543 | |
544 | KNOWN_CONTEXT_PTR, if non-NULL, will be filled by polymorphic call contexts | |
545 | of parameter used by a polymorphic call. */ | |
27d020cf JH |
546 | |
547 | void | |
548 | evaluate_properties_for_edge (struct cgraph_edge *e, bool inline_p, | |
549 | clause_t *clause_ptr, | |
550 | clause_t *nonspec_clause_ptr, | |
551 | vec<tree> *known_vals_ptr, | |
552 | vec<ipa_polymorphic_call_context> | |
553 | *known_contexts_ptr, | |
eb270950 | 554 | vec<ipa_agg_value_set> *known_aggs_ptr) |
27d020cf JH |
555 | { |
556 | struct cgraph_node *callee = e->callee->ultimate_alias_target (); | |
99b1c316 | 557 | class ipa_fn_summary *info = ipa_fn_summaries->get (callee); |
82c4b78d | 558 | auto_vec<value_range, 32> known_value_ranges; |
a33c028e | 559 | class ipa_edge_args *args; |
27d020cf JH |
560 | |
561 | if (clause_ptr) | |
562 | *clause_ptr = inline_p ? 0 : 1 << predicate::not_inlined_condition; | |
27d020cf JH |
563 | |
564 | if (ipa_node_params_sum | |
565 | && !e->call_stmt_cannot_inline_p | |
b0d55476 | 566 | && (info->conds || known_contexts_ptr) |
a33c028e | 567 | && (args = IPA_EDGE_REF (e)) != NULL) |
27d020cf | 568 | { |
eb270950 | 569 | struct cgraph_node *caller; |
b0d55476 | 570 | class ipa_node_params *caller_parms_info, *callee_pi = NULL; |
99b1c316 | 571 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
572 | int i, count = ipa_get_cs_argument_count (args); |
573 | ||
b0d55476 JH |
574 | if (count) |
575 | { | |
576 | if (e->caller->inlined_to) | |
577 | caller = e->caller->inlined_to; | |
578 | else | |
579 | caller = e->caller; | |
580 | caller_parms_info = IPA_NODE_REF (caller); | |
581 | callee_pi = IPA_NODE_REF (callee); | |
582 | ||
583 | /* Watch for thunks. */ | |
584 | if (callee_pi) | |
585 | /* Watch for variadic functions. */ | |
586 | count = MIN (count, ipa_get_param_count (callee_pi)); | |
587 | } | |
27d020cf | 588 | |
6cf67b62 JH |
589 | if (callee_pi) |
590 | for (i = 0; i < count; i++) | |
591 | { | |
592 | struct ipa_jump_func *jf = ipa_get_ith_jump_func (args, i); | |
6cf67b62 | 593 | |
b0d55476 JH |
594 | if (ipa_is_param_used_by_indirect_call (callee_pi, i) |
595 | || ipa_is_param_used_by_ipa_predicates (callee_pi, i)) | |
6cf67b62 | 596 | { |
b0d55476 JH |
597 | /* Determine if we know constant value of the parameter. */ |
598 | tree cst = ipa_value_from_jfunc (caller_parms_info, jf, | |
599 | ipa_get_type (callee_pi, i)); | |
600 | ||
601 | if (!cst && e->call_stmt | |
602 | && i < (int)gimple_call_num_args (e->call_stmt)) | |
603 | { | |
604 | cst = gimple_call_arg (e->call_stmt, i); | |
605 | if (!is_gimple_min_invariant (cst)) | |
606 | cst = NULL; | |
607 | } | |
608 | if (cst) | |
609 | { | |
610 | gcc_checking_assert (TREE_CODE (cst) != TREE_BINFO); | |
611 | if (!known_vals_ptr->length ()) | |
cb3874dc | 612 | vec_safe_grow_cleared (known_vals_ptr, count, true); |
b0d55476 JH |
613 | (*known_vals_ptr)[i] = cst; |
614 | } | |
615 | else if (inline_p && !es->param[i].change_prob) | |
616 | { | |
617 | if (!known_vals_ptr->length ()) | |
cb3874dc | 618 | vec_safe_grow_cleared (known_vals_ptr, count, true); |
b0d55476 JH |
619 | (*known_vals_ptr)[i] = error_mark_node; |
620 | } | |
621 | ||
622 | /* If we failed to get simple constant, try value range. */ | |
623 | if ((!cst || TREE_CODE (cst) != INTEGER_CST) | |
2523d721 | 624 | && vrp_will_run_p (caller) |
b0d55476 JH |
625 | && ipa_is_param_used_by_ipa_predicates (callee_pi, i)) |
626 | { | |
627 | value_range vr | |
628 | = ipa_value_range_from_jfunc (caller_parms_info, e, jf, | |
629 | ipa_get_type (callee_pi, | |
630 | i)); | |
631 | if (!vr.undefined_p () && !vr.varying_p ()) | |
632 | { | |
82c4b78d | 633 | if (!known_value_ranges.length ()) |
4ba9fb0a | 634 | { |
cb3874dc | 635 | known_value_ranges.safe_grow (count, true); |
4ba9fb0a | 636 | for (int i = 0; i < count; ++i) |
82c4b78d | 637 | new (&known_value_ranges[i]) value_range (); |
4ba9fb0a | 638 | } |
b0d55476 JH |
639 | known_value_ranges[i] = vr; |
640 | } | |
641 | } | |
642 | ||
643 | /* Determine known aggregate values. */ | |
21e28527 | 644 | if (fre_will_run_p (caller)) |
b0d55476 | 645 | { |
2523d721 JH |
646 | ipa_agg_value_set agg |
647 | = ipa_agg_value_set_from_jfunc (caller_parms_info, | |
648 | caller, &jf->agg); | |
649 | if (agg.items.length ()) | |
650 | { | |
651 | if (!known_aggs_ptr->length ()) | |
cb3874dc | 652 | vec_safe_grow_cleared (known_aggs_ptr, count, true); |
2523d721 JH |
653 | (*known_aggs_ptr)[i] = agg; |
654 | } | |
b0d55476 | 655 | } |
6cf67b62 | 656 | } |
b0d55476 JH |
657 | |
658 | /* For calls used in polymorphic calls we further determine | |
659 | polymorphic call context. */ | |
660 | if (known_contexts_ptr | |
661 | && ipa_is_param_used_by_polymorphic_call (callee_pi, i)) | |
6cf67b62 | 662 | { |
b0d55476 JH |
663 | ipa_polymorphic_call_context |
664 | ctx = ipa_context_from_jfunc (caller_parms_info, e, i, jf); | |
665 | if (!ctx.useless_p ()) | |
666 | { | |
667 | if (!known_contexts_ptr->length ()) | |
cb3874dc | 668 | known_contexts_ptr->safe_grow_cleared (count, true); |
b0d55476 JH |
669 | (*known_contexts_ptr)[i] |
670 | = ipa_context_from_jfunc (caller_parms_info, e, i, jf); | |
671 | } | |
672 | } | |
6cf67b62 JH |
673 | } |
674 | else | |
b0d55476 | 675 | gcc_assert (!count || callee->thunk.thunk_p); |
27d020cf | 676 | } |
b0d55476 | 677 | else if (e->call_stmt && !e->call_stmt_cannot_inline_p && info->conds) |
27d020cf JH |
678 | { |
679 | int i, count = (int)gimple_call_num_args (e->call_stmt); | |
680 | ||
27d020cf JH |
681 | for (i = 0; i < count; i++) |
682 | { | |
683 | tree cst = gimple_call_arg (e->call_stmt, i); | |
684 | if (!is_gimple_min_invariant (cst)) | |
685 | cst = NULL; | |
686 | if (cst) | |
b0d55476 JH |
687 | { |
688 | if (!known_vals_ptr->length ()) | |
cb3874dc | 689 | vec_safe_grow_cleared (known_vals_ptr, count, true); |
b0d55476 JH |
690 | (*known_vals_ptr)[i] = cst; |
691 | } | |
27d020cf JH |
692 | } |
693 | } | |
694 | ||
695 | evaluate_conditions_for_known_args (callee, inline_p, | |
b0d55476 | 696 | *known_vals_ptr, |
68718e8e | 697 | known_value_ranges, |
b0d55476 JH |
698 | *known_aggs_ptr, |
699 | clause_ptr, | |
27d020cf | 700 | nonspec_clause_ptr); |
27d020cf JH |
701 | } |
702 | ||
703 | ||
0bceb671 | 704 | /* Allocate the function summary. */ |
27d020cf JH |
705 | |
706 | static void | |
0bceb671 | 707 | ipa_fn_summary_alloc (void) |
27d020cf | 708 | { |
0bceb671 | 709 | gcc_checking_assert (!ipa_fn_summaries); |
44fca832 | 710 | ipa_size_summaries = new ipa_size_summary_t (symtab); |
7237f93e | 711 | ipa_fn_summaries = ipa_fn_summary_t::create_ggc (symtab); |
db30281f | 712 | ipa_call_summaries = new ipa_call_summary_t (symtab); |
27d020cf JH |
713 | } |
714 | ||
56f62793 | 715 | ipa_call_summary::~ipa_call_summary () |
27d020cf | 716 | { |
27d020cf JH |
717 | if (predicate) |
718 | edge_predicate_pool.remove (predicate); | |
56f62793 | 719 | |
27d020cf JH |
720 | param.release (); |
721 | } | |
722 | ||
56f62793 | 723 | ipa_fn_summary::~ipa_fn_summary () |
27d020cf | 724 | { |
27d020cf | 725 | if (loop_iterations) |
56f62793 | 726 | edge_predicate_pool.remove (loop_iterations); |
27d020cf | 727 | if (loop_stride) |
56f62793 | 728 | edge_predicate_pool.remove (loop_stride); |
27d020cf JH |
729 | vec_free (conds); |
730 | vec_free (size_time_table); | |
070e3489 | 731 | vec_free (call_size_time_table); |
27d020cf JH |
732 | } |
733 | ||
27d020cf | 734 | void |
56f62793 | 735 | ipa_fn_summary_t::remove_callees (cgraph_node *node) |
27d020cf | 736 | { |
56f62793 ML |
737 | cgraph_edge *e; |
738 | for (e = node->callees; e; e = e->next_callee) | |
739 | ipa_call_summaries->remove (e); | |
740 | for (e = node->indirect_calls; e; e = e->next_callee) | |
741 | ipa_call_summaries->remove (e); | |
27d020cf JH |
742 | } |
743 | ||
744 | /* Same as remap_predicate_after_duplication but handle hint predicate *P. | |
745 | Additionally care about allocating new memory slot for updated predicate | |
746 | and set it to NULL when it becomes true or false (and thus uninteresting). | |
747 | */ | |
748 | ||
749 | static void | |
750 | remap_hint_predicate_after_duplication (predicate **p, | |
751 | clause_t possible_truths) | |
752 | { | |
753 | predicate new_predicate; | |
754 | ||
755 | if (!*p) | |
756 | return; | |
757 | ||
758 | new_predicate = (*p)->remap_after_duplication (possible_truths); | |
759 | /* We do not want to free previous predicate; it is used by node origin. */ | |
760 | *p = NULL; | |
761 | set_hint_predicate (p, new_predicate); | |
762 | } | |
763 | ||
764 | ||
765 | /* Hook that is called by cgraph.c when a node is duplicated. */ | |
766 | void | |
0bceb671 | 767 | ipa_fn_summary_t::duplicate (cgraph_node *src, |
27d020cf | 768 | cgraph_node *dst, |
0bceb671 JH |
769 | ipa_fn_summary *, |
770 | ipa_fn_summary *info) | |
27d020cf | 771 | { |
56f62793 | 772 | new (info) ipa_fn_summary (*ipa_fn_summaries->get (src)); |
27d020cf JH |
773 | /* TODO: as an optimization, we may avoid copying conditions |
774 | that are known to be false or true. */ | |
775 | info->conds = vec_safe_copy (info->conds); | |
776 | ||
777 | /* When there are any replacements in the function body, see if we can figure | |
778 | out that something was optimized out. */ | |
779 | if (ipa_node_params_sum && dst->clone.tree_map) | |
780 | { | |
781 | vec<size_time_entry, va_gc> *entry = info->size_time_table; | |
782 | /* Use SRC parm info since it may not be copied yet. */ | |
99b1c316 | 783 | class ipa_node_params *parms_info = IPA_NODE_REF (src); |
27d020cf JH |
784 | vec<tree> known_vals = vNULL; |
785 | int count = ipa_get_param_count (parms_info); | |
786 | int i, j; | |
787 | clause_t possible_truths; | |
788 | predicate true_pred = true; | |
789 | size_time_entry *e; | |
790 | int optimized_out_size = 0; | |
791 | bool inlined_to_p = false; | |
792 | struct cgraph_edge *edge, *next; | |
793 | ||
794 | info->size_time_table = 0; | |
cb3874dc | 795 | known_vals.safe_grow_cleared (count, true); |
27d020cf JH |
796 | for (i = 0; i < count; i++) |
797 | { | |
798 | struct ipa_replace_map *r; | |
799 | ||
800 | for (j = 0; vec_safe_iterate (dst->clone.tree_map, j, &r); j++) | |
801 | { | |
ff6686d2 | 802 | if (r->parm_num == i) |
27d020cf JH |
803 | { |
804 | known_vals[i] = r->new_tree; | |
805 | break; | |
806 | } | |
807 | } | |
808 | } | |
809 | evaluate_conditions_for_known_args (dst, false, | |
810 | known_vals, | |
82c4b78d | 811 | vNULL, |
68718e8e | 812 | vNULL, |
27d020cf JH |
813 | &possible_truths, |
814 | /* We are going to specialize, | |
815 | so ignore nonspec truths. */ | |
816 | NULL); | |
817 | known_vals.release (); | |
818 | ||
819 | info->account_size_time (0, 0, true_pred, true_pred); | |
820 | ||
821 | /* Remap size_time vectors. | |
956d615d | 822 | Simplify the predicate by pruning out alternatives that are known |
27d020cf JH |
823 | to be false. |
824 | TODO: as on optimization, we can also eliminate conditions known | |
825 | to be true. */ | |
826 | for (i = 0; vec_safe_iterate (entry, i, &e); i++) | |
827 | { | |
828 | predicate new_exec_pred; | |
829 | predicate new_nonconst_pred; | |
830 | new_exec_pred = e->exec_predicate.remap_after_duplication | |
831 | (possible_truths); | |
832 | new_nonconst_pred = e->nonconst_predicate.remap_after_duplication | |
833 | (possible_truths); | |
834 | if (new_exec_pred == false || new_nonconst_pred == false) | |
835 | optimized_out_size += e->size; | |
836 | else | |
837 | info->account_size_time (e->size, e->time, new_exec_pred, | |
838 | new_nonconst_pred); | |
839 | } | |
840 | ||
841 | /* Remap edge predicates with the same simplification as above. | |
842 | Also copy constantness arrays. */ | |
843 | for (edge = dst->callees; edge; edge = next) | |
844 | { | |
845 | predicate new_predicate; | |
7237f93e | 846 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
847 | next = edge->next_callee; |
848 | ||
849 | if (!edge->inline_failed) | |
850 | inlined_to_p = true; | |
851 | if (!es->predicate) | |
852 | continue; | |
853 | new_predicate = es->predicate->remap_after_duplication | |
854 | (possible_truths); | |
855 | if (new_predicate == false && *es->predicate != false) | |
0bceb671 | 856 | optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale; |
27d020cf JH |
857 | edge_set_predicate (edge, &new_predicate); |
858 | } | |
859 | ||
956d615d | 860 | /* Remap indirect edge predicates with the same simplification as above. |
27d020cf JH |
861 | Also copy constantness arrays. */ |
862 | for (edge = dst->indirect_calls; edge; edge = next) | |
863 | { | |
864 | predicate new_predicate; | |
7237f93e | 865 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
866 | next = edge->next_callee; |
867 | ||
868 | gcc_checking_assert (edge->inline_failed); | |
869 | if (!es->predicate) | |
870 | continue; | |
871 | new_predicate = es->predicate->remap_after_duplication | |
872 | (possible_truths); | |
873 | if (new_predicate == false && *es->predicate != false) | |
0bceb671 | 874 | optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale; |
27d020cf JH |
875 | edge_set_predicate (edge, &new_predicate); |
876 | } | |
877 | remap_hint_predicate_after_duplication (&info->loop_iterations, | |
878 | possible_truths); | |
879 | remap_hint_predicate_after_duplication (&info->loop_stride, | |
880 | possible_truths); | |
27d020cf JH |
881 | |
882 | /* If inliner or someone after inliner will ever start producing | |
883 | non-trivial clones, we will get trouble with lack of information | |
884 | about updating self sizes, because size vectors already contains | |
956d615d | 885 | sizes of the callees. */ |
27d020cf JH |
886 | gcc_assert (!inlined_to_p || !optimized_out_size); |
887 | } | |
888 | else | |
889 | { | |
890 | info->size_time_table = vec_safe_copy (info->size_time_table); | |
891 | if (info->loop_iterations) | |
892 | { | |
893 | predicate p = *info->loop_iterations; | |
894 | info->loop_iterations = NULL; | |
895 | set_hint_predicate (&info->loop_iterations, p); | |
896 | } | |
897 | if (info->loop_stride) | |
898 | { | |
899 | predicate p = *info->loop_stride; | |
900 | info->loop_stride = NULL; | |
901 | set_hint_predicate (&info->loop_stride, p); | |
902 | } | |
27d020cf | 903 | } |
a62bfab5 | 904 | if (!dst->inlined_to) |
0bceb671 | 905 | ipa_update_overall_fn_summary (dst); |
27d020cf JH |
906 | } |
907 | ||
908 | ||
909 | /* Hook that is called by cgraph.c when a node is duplicated. */ | |
910 | ||
911 | void | |
912 | ipa_call_summary_t::duplicate (struct cgraph_edge *src, | |
913 | struct cgraph_edge *dst, | |
99b1c316 MS |
914 | class ipa_call_summary *srcinfo, |
915 | class ipa_call_summary *info) | |
27d020cf | 916 | { |
56f62793 | 917 | new (info) ipa_call_summary (*srcinfo); |
27d020cf JH |
918 | info->predicate = NULL; |
919 | edge_set_predicate (dst, srcinfo->predicate); | |
920 | info->param = srcinfo->param.copy (); | |
921 | if (!dst->indirect_unknown_callee && src->indirect_unknown_callee) | |
922 | { | |
923 | info->call_stmt_size -= (eni_size_weights.indirect_call_cost | |
924 | - eni_size_weights.call_cost); | |
925 | info->call_stmt_time -= (eni_time_weights.indirect_call_cost | |
926 | - eni_time_weights.call_cost); | |
927 | } | |
928 | } | |
929 | ||
27d020cf JH |
930 | /* Dump edge summaries associated to NODE and recursively to all clones. |
931 | Indent by INDENT. */ | |
932 | ||
933 | static void | |
934 | dump_ipa_call_summary (FILE *f, int indent, struct cgraph_node *node, | |
99b1c316 | 935 | class ipa_fn_summary *info) |
27d020cf JH |
936 | { |
937 | struct cgraph_edge *edge; | |
938 | for (edge = node->callees; edge; edge = edge->next_callee) | |
939 | { | |
99b1c316 | 940 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
941 | struct cgraph_node *callee = edge->callee->ultimate_alias_target (); |
942 | int i; | |
943 | ||
944 | fprintf (f, | |
d597b944 ML |
945 | "%*s%s %s\n%*s freq:%4.2f", |
946 | indent, "", callee->dump_name (), | |
27d020cf JH |
947 | !edge->inline_failed |
948 | ? "inlined" : cgraph_inline_failed_string (edge-> inline_failed), | |
7237f93e JH |
949 | indent, "", edge->sreal_frequency ().to_double ()); |
950 | ||
b74d8dc4 JH |
951 | if (cross_module_call_p (edge)) |
952 | fprintf (f, " cross module"); | |
953 | ||
7237f93e JH |
954 | if (es) |
955 | fprintf (f, " loop depth:%2i size:%2i time: %2i", | |
956 | es->loop_depth, es->call_stmt_size, es->call_stmt_time); | |
56f62793 ML |
957 | |
958 | ipa_fn_summary *s = ipa_fn_summaries->get (callee); | |
f658ad30 | 959 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
56f62793 | 960 | if (s != NULL) |
f658ad30 JH |
961 | fprintf (f, " callee size:%2i stack:%2i", |
962 | (int) (ss->size / ipa_fn_summary::size_scale), | |
56f62793 | 963 | (int) s->estimated_stack_size); |
27d020cf | 964 | |
7237f93e | 965 | if (es && es->predicate) |
27d020cf JH |
966 | { |
967 | fprintf (f, " predicate: "); | |
968 | es->predicate->dump (f, info->conds); | |
969 | } | |
970 | else | |
971 | fprintf (f, "\n"); | |
7237f93e | 972 | if (es && es->param.exists ()) |
27d020cf JH |
973 | for (i = 0; i < (int) es->param.length (); i++) |
974 | { | |
975 | int prob = es->param[i].change_prob; | |
976 | ||
977 | if (!prob) | |
978 | fprintf (f, "%*s op%i is compile time invariant\n", | |
979 | indent + 2, "", i); | |
980 | else if (prob != REG_BR_PROB_BASE) | |
981 | fprintf (f, "%*s op%i change %f%% of time\n", indent + 2, "", i, | |
982 | prob * 100.0 / REG_BR_PROB_BASE); | |
983 | } | |
984 | if (!edge->inline_failed) | |
985 | { | |
f658ad30 JH |
986 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
987 | fprintf (f, "%*sStack frame offset %i, callee self size %i\n", | |
27d020cf | 988 | indent + 2, "", |
f658ad30 JH |
989 | (int) ipa_get_stack_frame_offset (callee), |
990 | (int) ss->estimated_self_stack_size); | |
27d020cf JH |
991 | dump_ipa_call_summary (f, indent + 2, callee, info); |
992 | } | |
993 | } | |
994 | for (edge = node->indirect_calls; edge; edge = edge->next_callee) | |
995 | { | |
99b1c316 | 996 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
41f0e819 | 997 | fprintf (f, "%*sindirect call loop depth:%2i freq:%4.2f size:%2i" |
27d020cf JH |
998 | " time: %2i", |
999 | indent, "", | |
1000 | es->loop_depth, | |
41f0e819 JH |
1001 | edge->sreal_frequency ().to_double (), es->call_stmt_size, |
1002 | es->call_stmt_time); | |
27d020cf JH |
1003 | if (es->predicate) |
1004 | { | |
1005 | fprintf (f, "predicate: "); | |
1006 | es->predicate->dump (f, info->conds); | |
1007 | } | |
1008 | else | |
1009 | fprintf (f, "\n"); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | ||
1014 | void | |
0bceb671 | 1015 | ipa_dump_fn_summary (FILE *f, struct cgraph_node *node) |
27d020cf JH |
1016 | { |
1017 | if (node->definition) | |
1018 | { | |
99b1c316 | 1019 | class ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 1020 | class ipa_size_summary *ss = ipa_size_summaries->get (node); |
56f62793 | 1021 | if (s != NULL) |
27d020cf | 1022 | { |
56f62793 ML |
1023 | size_time_entry *e; |
1024 | int i; | |
1025 | fprintf (f, "IPA function summary for %s", node->dump_name ()); | |
1026 | if (DECL_DISREGARD_INLINE_LIMITS (node->decl)) | |
1027 | fprintf (f, " always_inline"); | |
1028 | if (s->inlinable) | |
1029 | fprintf (f, " inlinable"); | |
1030 | if (s->fp_expressions) | |
1031 | fprintf (f, " fp_expression"); | |
1032 | fprintf (f, "\n global time: %f\n", s->time.to_double ()); | |
f658ad30 JH |
1033 | fprintf (f, " self size: %i\n", ss->self_size); |
1034 | fprintf (f, " global size: %i\n", ss->size); | |
56f62793 ML |
1035 | fprintf (f, " min size: %i\n", s->min_size); |
1036 | fprintf (f, " self stack: %i\n", | |
f658ad30 | 1037 | (int) ss->estimated_self_stack_size); |
56f62793 ML |
1038 | fprintf (f, " global stack: %i\n", (int) s->estimated_stack_size); |
1039 | if (s->growth) | |
1040 | fprintf (f, " estimated growth:%i\n", (int) s->growth); | |
1041 | if (s->scc_no) | |
1042 | fprintf (f, " In SCC: %i\n", (int) s->scc_no); | |
1043 | for (i = 0; vec_safe_iterate (s->size_time_table, i, &e); i++) | |
1044 | { | |
1045 | fprintf (f, " size:%f, time:%f", | |
1046 | (double) e->size / ipa_fn_summary::size_scale, | |
1047 | e->time.to_double ()); | |
1048 | if (e->exec_predicate != true) | |
1049 | { | |
1050 | fprintf (f, ", executed if:"); | |
1051 | e->exec_predicate.dump (f, s->conds, 0); | |
1052 | } | |
1053 | if (e->exec_predicate != e->nonconst_predicate) | |
1054 | { | |
1055 | fprintf (f, ", nonconst if:"); | |
1056 | e->nonconst_predicate.dump (f, s->conds, 0); | |
1057 | } | |
1058 | fprintf (f, "\n"); | |
1059 | } | |
1060 | if (s->loop_iterations) | |
27d020cf | 1061 | { |
56f62793 ML |
1062 | fprintf (f, " loop iterations:"); |
1063 | s->loop_iterations->dump (f, s->conds); | |
27d020cf | 1064 | } |
56f62793 | 1065 | if (s->loop_stride) |
27d020cf | 1066 | { |
56f62793 ML |
1067 | fprintf (f, " loop stride:"); |
1068 | s->loop_stride->dump (f, s->conds); | |
27d020cf | 1069 | } |
56f62793 ML |
1070 | fprintf (f, " calls:\n"); |
1071 | dump_ipa_call_summary (f, 4, node, s); | |
27d020cf JH |
1072 | fprintf (f, "\n"); |
1073 | } | |
56f62793 ML |
1074 | else |
1075 | fprintf (f, "IPA summary for %s is missing.\n", node->dump_name ()); | |
27d020cf JH |
1076 | } |
1077 | } | |
1078 | ||
1079 | DEBUG_FUNCTION void | |
0bceb671 | 1080 | ipa_debug_fn_summary (struct cgraph_node *node) |
27d020cf | 1081 | { |
0bceb671 | 1082 | ipa_dump_fn_summary (stderr, node); |
27d020cf JH |
1083 | } |
1084 | ||
1085 | void | |
0bceb671 | 1086 | ipa_dump_fn_summaries (FILE *f) |
27d020cf JH |
1087 | { |
1088 | struct cgraph_node *node; | |
1089 | ||
1090 | FOR_EACH_DEFINED_FUNCTION (node) | |
a62bfab5 | 1091 | if (!node->inlined_to) |
0bceb671 | 1092 | ipa_dump_fn_summary (f, node); |
27d020cf JH |
1093 | } |
1094 | ||
1095 | /* Callback of walk_aliased_vdefs. Flags that it has been invoked to the | |
1096 | boolean variable pointed to by DATA. */ | |
1097 | ||
1098 | static bool | |
1099 | mark_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef ATTRIBUTE_UNUSED, | |
1100 | void *data) | |
1101 | { | |
1102 | bool *b = (bool *) data; | |
1103 | *b = true; | |
1104 | return true; | |
1105 | } | |
1106 | ||
1107 | /* If OP refers to value of function parameter, return the corresponding | |
1108 | parameter. If non-NULL, the size of the memory load (or the SSA_NAME of the | |
1109 | PARM_DECL) will be stored to *SIZE_P in that case too. */ | |
1110 | ||
1111 | static tree | |
c628d1c3 | 1112 | unmodified_parm_1 (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1113 | poly_int64 *size_p) |
27d020cf JH |
1114 | { |
1115 | /* SSA_NAME referring to parm default def? */ | |
1116 | if (TREE_CODE (op) == SSA_NAME | |
1117 | && SSA_NAME_IS_DEFAULT_DEF (op) | |
1118 | && TREE_CODE (SSA_NAME_VAR (op)) == PARM_DECL) | |
1119 | { | |
1120 | if (size_p) | |
86003645 | 1121 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1122 | return SSA_NAME_VAR (op); |
1123 | } | |
1124 | /* Non-SSA parm reference? */ | |
1125 | if (TREE_CODE (op) == PARM_DECL) | |
1126 | { | |
1127 | bool modified = false; | |
1128 | ||
1129 | ao_ref refd; | |
1130 | ao_ref_init (&refd, op); | |
c628d1c3 MJ |
1131 | int walked = walk_aliased_vdefs (&refd, gimple_vuse (stmt), |
1132 | mark_modified, &modified, NULL, NULL, | |
1133 | fbi->aa_walk_budget + 1); | |
1134 | if (walked < 0) | |
1135 | { | |
1136 | fbi->aa_walk_budget = 0; | |
1137 | return NULL_TREE; | |
1138 | } | |
27d020cf JH |
1139 | if (!modified) |
1140 | { | |
1141 | if (size_p) | |
86003645 | 1142 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1143 | return op; |
1144 | } | |
1145 | } | |
1146 | return NULL_TREE; | |
1147 | } | |
1148 | ||
1149 | /* If OP refers to value of function parameter, return the corresponding | |
1150 | parameter. Also traverse chains of SSA register assignments. If non-NULL, | |
1151 | the size of the memory load (or the SSA_NAME of the PARM_DECL) will be | |
1152 | stored to *SIZE_P in that case too. */ | |
1153 | ||
1154 | static tree | |
c628d1c3 | 1155 | unmodified_parm (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1156 | poly_int64 *size_p) |
27d020cf | 1157 | { |
c628d1c3 | 1158 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1159 | if (res) |
1160 | return res; | |
1161 | ||
1162 | if (TREE_CODE (op) == SSA_NAME | |
1163 | && !SSA_NAME_IS_DEFAULT_DEF (op) | |
1164 | && gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
c628d1c3 | 1165 | return unmodified_parm (fbi, SSA_NAME_DEF_STMT (op), |
27d020cf JH |
1166 | gimple_assign_rhs1 (SSA_NAME_DEF_STMT (op)), |
1167 | size_p); | |
1168 | return NULL_TREE; | |
1169 | } | |
1170 | ||
1171 | /* If OP refers to a value of a function parameter or value loaded from an | |
1172 | aggregate passed to a parameter (either by value or reference), return TRUE | |
1173 | and store the number of the parameter to *INDEX_P, the access size into | |
1174 | *SIZE_P, and information whether and how it has been loaded from an | |
1175 | aggregate into *AGGPOS. INFO describes the function parameters, STMT is the | |
1176 | statement in which OP is used or loaded. */ | |
1177 | ||
1178 | static bool | |
1179 | unmodified_parm_or_parm_agg_item (struct ipa_func_body_info *fbi, | |
1180 | gimple *stmt, tree op, int *index_p, | |
86003645 | 1181 | poly_int64 *size_p, |
27d020cf JH |
1182 | struct agg_position_info *aggpos) |
1183 | { | |
c628d1c3 | 1184 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1185 | |
1186 | gcc_checking_assert (aggpos); | |
1187 | if (res) | |
1188 | { | |
1189 | *index_p = ipa_get_param_decl_index (fbi->info, res); | |
1190 | if (*index_p < 0) | |
1191 | return false; | |
1192 | aggpos->agg_contents = false; | |
1193 | aggpos->by_ref = false; | |
1194 | return true; | |
1195 | } | |
1196 | ||
1197 | if (TREE_CODE (op) == SSA_NAME) | |
1198 | { | |
1199 | if (SSA_NAME_IS_DEFAULT_DEF (op) | |
1200 | || !gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
1201 | return false; | |
1202 | stmt = SSA_NAME_DEF_STMT (op); | |
1203 | op = gimple_assign_rhs1 (stmt); | |
1204 | if (!REFERENCE_CLASS_P (op)) | |
1205 | return unmodified_parm_or_parm_agg_item (fbi, stmt, op, index_p, size_p, | |
1206 | aggpos); | |
1207 | } | |
1208 | ||
1209 | aggpos->agg_contents = true; | |
1210 | return ipa_load_from_parm_agg (fbi, fbi->info->descriptors, | |
1211 | stmt, op, index_p, &aggpos->offset, | |
1212 | size_p, &aggpos->by_ref); | |
1213 | } | |
1214 | ||
1215 | /* See if statement might disappear after inlining. | |
1216 | 0 - means not eliminated | |
1217 | 1 - half of statements goes away | |
1218 | 2 - for sure it is eliminated. | |
1219 | We are not terribly sophisticated, basically looking for simple abstraction | |
1220 | penalty wrappers. */ | |
1221 | ||
1222 | static int | |
c628d1c3 | 1223 | eliminated_by_inlining_prob (ipa_func_body_info *fbi, gimple *stmt) |
27d020cf JH |
1224 | { |
1225 | enum gimple_code code = gimple_code (stmt); | |
1226 | enum tree_code rhs_code; | |
1227 | ||
1228 | if (!optimize) | |
1229 | return 0; | |
1230 | ||
1231 | switch (code) | |
1232 | { | |
1233 | case GIMPLE_RETURN: | |
1234 | return 2; | |
1235 | case GIMPLE_ASSIGN: | |
1236 | if (gimple_num_ops (stmt) != 2) | |
1237 | return 0; | |
1238 | ||
1239 | rhs_code = gimple_assign_rhs_code (stmt); | |
1240 | ||
1241 | /* Casts of parameters, loads from parameters passed by reference | |
1242 | and stores to return value or parameters are often free after | |
956d615d | 1243 | inlining due to SRA and further combining. |
27d020cf JH |
1244 | Assume that half of statements goes away. */ |
1245 | if (CONVERT_EXPR_CODE_P (rhs_code) | |
1246 | || rhs_code == VIEW_CONVERT_EXPR | |
1247 | || rhs_code == ADDR_EXPR | |
1248 | || gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS) | |
1249 | { | |
1250 | tree rhs = gimple_assign_rhs1 (stmt); | |
1251 | tree lhs = gimple_assign_lhs (stmt); | |
1252 | tree inner_rhs = get_base_address (rhs); | |
1253 | tree inner_lhs = get_base_address (lhs); | |
1254 | bool rhs_free = false; | |
1255 | bool lhs_free = false; | |
1256 | ||
1257 | if (!inner_rhs) | |
1258 | inner_rhs = rhs; | |
1259 | if (!inner_lhs) | |
1260 | inner_lhs = lhs; | |
1261 | ||
1262 | /* Reads of parameter are expected to be free. */ | |
c628d1c3 | 1263 | if (unmodified_parm (fbi, stmt, inner_rhs, NULL)) |
27d020cf JH |
1264 | rhs_free = true; |
1265 | /* Match expressions of form &this->field. Those will most likely | |
1266 | combine with something upstream after inlining. */ | |
1267 | else if (TREE_CODE (inner_rhs) == ADDR_EXPR) | |
1268 | { | |
1269 | tree op = get_base_address (TREE_OPERAND (inner_rhs, 0)); | |
1270 | if (TREE_CODE (op) == PARM_DECL) | |
1271 | rhs_free = true; | |
1272 | else if (TREE_CODE (op) == MEM_REF | |
c628d1c3 MJ |
1273 | && unmodified_parm (fbi, stmt, TREE_OPERAND (op, 0), |
1274 | NULL)) | |
27d020cf JH |
1275 | rhs_free = true; |
1276 | } | |
1277 | ||
1278 | /* When parameter is not SSA register because its address is taken | |
1279 | and it is just copied into one, the statement will be completely | |
1280 | free after inlining (we will copy propagate backward). */ | |
1281 | if (rhs_free && is_gimple_reg (lhs)) | |
1282 | return 2; | |
1283 | ||
1284 | /* Reads of parameters passed by reference | |
1285 | expected to be free (i.e. optimized out after inlining). */ | |
1286 | if (TREE_CODE (inner_rhs) == MEM_REF | |
c628d1c3 | 1287 | && unmodified_parm (fbi, stmt, TREE_OPERAND (inner_rhs, 0), NULL)) |
27d020cf JH |
1288 | rhs_free = true; |
1289 | ||
1290 | /* Copying parameter passed by reference into gimple register is | |
1291 | probably also going to copy propagate, but we can't be quite | |
1292 | sure. */ | |
1293 | if (rhs_free && is_gimple_reg (lhs)) | |
1294 | lhs_free = true; | |
1295 | ||
1296 | /* Writes to parameters, parameters passed by value and return value | |
956d615d | 1297 | (either directly or passed via invisible reference) are free. |
27d020cf JH |
1298 | |
1299 | TODO: We ought to handle testcase like | |
1300 | struct a {int a,b;}; | |
1301 | struct a | |
956d615d | 1302 | returnstruct (void) |
27d020cf JH |
1303 | { |
1304 | struct a a ={1,2}; | |
1305 | return a; | |
1306 | } | |
1307 | ||
1308 | This translate into: | |
1309 | ||
956d615d | 1310 | returnstruct () |
27d020cf JH |
1311 | { |
1312 | int a$b; | |
1313 | int a$a; | |
1314 | struct a a; | |
1315 | struct a D.2739; | |
1316 | ||
1317 | <bb 2>: | |
1318 | D.2739.a = 1; | |
1319 | D.2739.b = 2; | |
1320 | return D.2739; | |
1321 | ||
1322 | } | |
1323 | For that we either need to copy ipa-split logic detecting writes | |
1324 | to return value. */ | |
1325 | if (TREE_CODE (inner_lhs) == PARM_DECL | |
1326 | || TREE_CODE (inner_lhs) == RESULT_DECL | |
1327 | || (TREE_CODE (inner_lhs) == MEM_REF | |
c628d1c3 MJ |
1328 | && (unmodified_parm (fbi, stmt, TREE_OPERAND (inner_lhs, 0), |
1329 | NULL) | |
27d020cf JH |
1330 | || (TREE_CODE (TREE_OPERAND (inner_lhs, 0)) == SSA_NAME |
1331 | && SSA_NAME_VAR (TREE_OPERAND (inner_lhs, 0)) | |
1332 | && TREE_CODE (SSA_NAME_VAR (TREE_OPERAND | |
1333 | (inner_lhs, | |
1334 | 0))) == RESULT_DECL)))) | |
1335 | lhs_free = true; | |
1336 | if (lhs_free | |
1337 | && (is_gimple_reg (rhs) || is_gimple_min_invariant (rhs))) | |
1338 | rhs_free = true; | |
1339 | if (lhs_free && rhs_free) | |
1340 | return 1; | |
1341 | } | |
1342 | return 0; | |
1343 | default: | |
1344 | return 0; | |
1345 | } | |
1346 | } | |
1347 | ||
4307a485 FX |
1348 | /* Analyze EXPR if it represents a series of simple operations performed on |
1349 | a function parameter and return true if so. FBI, STMT, EXPR, INDEX_P and | |
1350 | AGGPOS have the same meaning like in unmodified_parm_or_parm_agg_item. | |
1351 | Type of the parameter or load from an aggregate via the parameter is | |
1352 | stored in *TYPE_P. Operations on the parameter are recorded to | |
1353 | PARAM_OPS_P if it is not NULL. */ | |
1354 | ||
1355 | static bool | |
1356 | decompose_param_expr (struct ipa_func_body_info *fbi, | |
1357 | gimple *stmt, tree expr, | |
1358 | int *index_p, tree *type_p, | |
1359 | struct agg_position_info *aggpos, | |
1360 | expr_eval_ops *param_ops_p = NULL) | |
1361 | { | |
fdfd7f53 | 1362 | int op_limit = opt_for_fn (fbi->node->decl, param_ipa_max_param_expr_ops); |
4307a485 FX |
1363 | int op_count = 0; |
1364 | ||
1365 | if (param_ops_p) | |
1366 | *param_ops_p = NULL; | |
1367 | ||
1368 | while (true) | |
1369 | { | |
1370 | expr_eval_op eval_op; | |
1371 | unsigned rhs_count; | |
1372 | unsigned cst_count = 0; | |
1373 | ||
1374 | if (unmodified_parm_or_parm_agg_item (fbi, stmt, expr, index_p, NULL, | |
1375 | aggpos)) | |
1376 | { | |
1377 | tree type = TREE_TYPE (expr); | |
1378 | ||
1379 | if (aggpos->agg_contents) | |
1380 | { | |
1381 | /* Stop if containing bit-field. */ | |
1382 | if (TREE_CODE (expr) == BIT_FIELD_REF | |
1383 | || contains_bitfld_component_ref_p (expr)) | |
1384 | break; | |
1385 | } | |
1386 | ||
1387 | *type_p = type; | |
1388 | return true; | |
1389 | } | |
1390 | ||
1391 | if (TREE_CODE (expr) != SSA_NAME || SSA_NAME_IS_DEFAULT_DEF (expr)) | |
1392 | break; | |
1393 | ||
1394 | if (!is_gimple_assign (stmt = SSA_NAME_DEF_STMT (expr))) | |
1395 | break; | |
1396 | ||
1397 | switch (gimple_assign_rhs_class (stmt)) | |
1398 | { | |
1399 | case GIMPLE_SINGLE_RHS: | |
1400 | expr = gimple_assign_rhs1 (stmt); | |
1401 | continue; | |
1402 | ||
1403 | case GIMPLE_UNARY_RHS: | |
1404 | rhs_count = 1; | |
1405 | break; | |
1406 | ||
1407 | case GIMPLE_BINARY_RHS: | |
1408 | rhs_count = 2; | |
1409 | break; | |
1410 | ||
1411 | case GIMPLE_TERNARY_RHS: | |
1412 | rhs_count = 3; | |
1413 | break; | |
1414 | ||
1415 | default: | |
1416 | goto fail; | |
1417 | } | |
1418 | ||
1419 | /* Stop if expression is too complex. */ | |
1420 | if (op_count++ == op_limit) | |
1421 | break; | |
1422 | ||
1423 | if (param_ops_p) | |
1424 | { | |
1425 | eval_op.code = gimple_assign_rhs_code (stmt); | |
1426 | eval_op.type = TREE_TYPE (gimple_assign_lhs (stmt)); | |
1427 | eval_op.val[0] = NULL_TREE; | |
1428 | eval_op.val[1] = NULL_TREE; | |
1429 | } | |
1430 | ||
1431 | expr = NULL_TREE; | |
1432 | for (unsigned i = 0; i < rhs_count; i++) | |
1433 | { | |
1434 | tree op = gimple_op (stmt, i + 1); | |
1435 | ||
1436 | gcc_assert (op && !TYPE_P (op)); | |
1437 | if (is_gimple_ip_invariant (op)) | |
1438 | { | |
1439 | if (++cst_count == rhs_count) | |
1440 | goto fail; | |
1441 | ||
1442 | eval_op.val[cst_count - 1] = op; | |
1443 | } | |
1444 | else if (!expr) | |
1445 | { | |
1446 | /* Found a non-constant operand, and record its index in rhs | |
1447 | operands. */ | |
1448 | eval_op.index = i; | |
1449 | expr = op; | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | /* Found more than one non-constant operands. */ | |
1454 | goto fail; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | if (param_ops_p) | |
1459 | vec_safe_insert (*param_ops_p, 0, eval_op); | |
1460 | } | |
1461 | ||
1462 | /* Failed to decompose, free resource and return. */ | |
1463 | fail: | |
1464 | if (param_ops_p) | |
1465 | vec_free (*param_ops_p); | |
1466 | ||
1467 | return false; | |
1468 | } | |
27d020cf JH |
1469 | |
1470 | /* If BB ends by a conditional we can turn into predicates, attach corresponding | |
1471 | predicates to the CFG edges. */ | |
1472 | ||
1473 | static void | |
1474 | set_cond_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1475 | class ipa_fn_summary *summary, |
40a777e8 | 1476 | class ipa_node_params *params_summary, |
27d020cf JH |
1477 | basic_block bb) |
1478 | { | |
1479 | gimple *last; | |
4307a485 | 1480 | tree op, op2; |
27d020cf | 1481 | int index; |
27d020cf JH |
1482 | struct agg_position_info aggpos; |
1483 | enum tree_code code, inverted_code; | |
1484 | edge e; | |
1485 | edge_iterator ei; | |
1486 | gimple *set_stmt; | |
4307a485 FX |
1487 | tree param_type; |
1488 | expr_eval_ops param_ops; | |
27d020cf JH |
1489 | |
1490 | last = last_stmt (bb); | |
1491 | if (!last || gimple_code (last) != GIMPLE_COND) | |
1492 | return; | |
1493 | if (!is_gimple_ip_invariant (gimple_cond_rhs (last))) | |
1494 | return; | |
1495 | op = gimple_cond_lhs (last); | |
4307a485 FX |
1496 | |
1497 | if (decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, | |
1498 | ¶m_ops)) | |
27d020cf JH |
1499 | { |
1500 | code = gimple_cond_code (last); | |
1501 | inverted_code = invert_tree_comparison (code, HONOR_NANS (op)); | |
1502 | ||
1503 | FOR_EACH_EDGE (e, ei, bb->succs) | |
1504 | { | |
1505 | enum tree_code this_code = (e->flags & EDGE_TRUE_VALUE | |
1506 | ? code : inverted_code); | |
1507 | /* invert_tree_comparison will return ERROR_MARK on FP | |
956d615d | 1508 | comparisons that are not EQ/NE instead of returning proper |
efe12656 FX |
1509 | unordered one. Be sure it is not confused with NON_CONSTANT. |
1510 | ||
1511 | And if the edge's target is the final block of diamond CFG graph | |
1512 | of this conditional statement, we do not need to compute | |
1513 | predicate for the edge because the final block's predicate must | |
1514 | be at least as that of the first block of the statement. */ | |
1515 | if (this_code != ERROR_MARK | |
1516 | && !dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
27d020cf JH |
1517 | { |
1518 | predicate p | |
40a777e8 JH |
1519 | = add_condition (summary, params_summary, index, |
1520 | param_type, &aggpos, | |
4307a485 | 1521 | this_code, gimple_cond_rhs (last), param_ops); |
27d020cf JH |
1522 | e->aux = edge_predicate_pool.allocate (); |
1523 | *(predicate *) e->aux = p; | |
1524 | } | |
1525 | } | |
4307a485 | 1526 | vec_free (param_ops); |
27d020cf JH |
1527 | } |
1528 | ||
1529 | if (TREE_CODE (op) != SSA_NAME) | |
1530 | return; | |
1531 | /* Special case | |
1532 | if (builtin_constant_p (op)) | |
1533 | constant_code | |
1534 | else | |
1535 | nonconstant_code. | |
1536 | Here we can predicate nonconstant_code. We can't | |
1537 | really handle constant_code since we have no predicate | |
1538 | for this and also the constant code is not known to be | |
956d615d | 1539 | optimized away when inliner doesn't see operand is constant. |
27d020cf JH |
1540 | Other optimizers might think otherwise. */ |
1541 | if (gimple_cond_code (last) != NE_EXPR | |
1542 | || !integer_zerop (gimple_cond_rhs (last))) | |
1543 | return; | |
1544 | set_stmt = SSA_NAME_DEF_STMT (op); | |
1545 | if (!gimple_call_builtin_p (set_stmt, BUILT_IN_CONSTANT_P) | |
1546 | || gimple_call_num_args (set_stmt) != 1) | |
1547 | return; | |
1548 | op2 = gimple_call_arg (set_stmt, 0); | |
4307a485 | 1549 | if (!decompose_param_expr (fbi, set_stmt, op2, &index, ¶m_type, &aggpos)) |
27d020cf JH |
1550 | return; |
1551 | FOR_EACH_EDGE (e, ei, bb->succs) if (e->flags & EDGE_FALSE_VALUE) | |
1552 | { | |
40a777e8 JH |
1553 | predicate p = add_condition (summary, params_summary, index, |
1554 | param_type, &aggpos, | |
27d020cf JH |
1555 | predicate::is_not_constant, NULL_TREE); |
1556 | e->aux = edge_predicate_pool.allocate (); | |
1557 | *(predicate *) e->aux = p; | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | ||
1562 | /* If BB ends by a switch we can turn into predicates, attach corresponding | |
1563 | predicates to the CFG edges. */ | |
1564 | ||
1565 | static void | |
1566 | set_switch_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1567 | class ipa_fn_summary *summary, |
40a777e8 | 1568 | class ipa_node_params *params_summary, |
27d020cf JH |
1569 | basic_block bb) |
1570 | { | |
1571 | gimple *lastg; | |
1572 | tree op; | |
1573 | int index; | |
27d020cf JH |
1574 | struct agg_position_info aggpos; |
1575 | edge e; | |
1576 | edge_iterator ei; | |
1577 | size_t n; | |
1578 | size_t case_idx; | |
4307a485 FX |
1579 | tree param_type; |
1580 | expr_eval_ops param_ops; | |
27d020cf JH |
1581 | |
1582 | lastg = last_stmt (bb); | |
1583 | if (!lastg || gimple_code (lastg) != GIMPLE_SWITCH) | |
1584 | return; | |
1585 | gswitch *last = as_a <gswitch *> (lastg); | |
1586 | op = gimple_switch_index (last); | |
4307a485 FX |
1587 | if (!decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, |
1588 | ¶m_ops)) | |
27d020cf JH |
1589 | return; |
1590 | ||
351e7c3b FX |
1591 | auto_vec<std::pair<tree, tree> > ranges; |
1592 | tree type = TREE_TYPE (op); | |
fdfd7f53 ML |
1593 | int bound_limit = opt_for_fn (fbi->node->decl, |
1594 | param_ipa_max_switch_predicate_bounds); | |
351e7c3b FX |
1595 | int bound_count = 0; |
1596 | wide_int vr_wmin, vr_wmax; | |
1597 | value_range_kind vr_type = get_range_info (op, &vr_wmin, &vr_wmax); | |
1598 | ||
27d020cf JH |
1599 | FOR_EACH_EDGE (e, ei, bb->succs) |
1600 | { | |
1601 | e->aux = edge_predicate_pool.allocate (); | |
1602 | *(predicate *) e->aux = false; | |
1603 | } | |
351e7c3b | 1604 | |
efe12656 FX |
1605 | e = gimple_switch_edge (cfun, last, 0); |
1606 | /* Set BOUND_COUNT to maximum count to bypass computing predicate for | |
1607 | default case if its target basic block is in convergence point of all | |
1608 | switch cases, which can be determined by checking whether it | |
1609 | post-dominates the switch statement. */ | |
1610 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1611 | bound_count = INT_MAX; | |
1612 | ||
27d020cf | 1613 | n = gimple_switch_num_labels (last); |
351e7c3b | 1614 | for (case_idx = 1; case_idx < n; ++case_idx) |
27d020cf JH |
1615 | { |
1616 | tree cl = gimple_switch_label (last, case_idx); | |
efe12656 FX |
1617 | tree min = CASE_LOW (cl); |
1618 | tree max = CASE_HIGH (cl); | |
27d020cf JH |
1619 | predicate p; |
1620 | ||
4307a485 FX |
1621 | e = gimple_switch_edge (cfun, last, case_idx); |
1622 | ||
efe12656 FX |
1623 | /* The case value might not have same type as switch expression, |
1624 | extend the value based on the expression type. */ | |
1625 | if (TREE_TYPE (min) != type) | |
1626 | min = wide_int_to_tree (type, wi::to_wide (min)); | |
27d020cf | 1627 | |
351e7c3b | 1628 | if (!max) |
efe12656 FX |
1629 | max = min; |
1630 | else if (TREE_TYPE (max) != type) | |
1631 | max = wide_int_to_tree (type, wi::to_wide (max)); | |
1632 | ||
1633 | /* The case's target basic block is in convergence point of all switch | |
1634 | cases, its predicate should be at least as that of the switch | |
1635 | statement. */ | |
1636 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1637 | p = true; | |
1638 | else if (min == max) | |
40a777e8 JH |
1639 | p = add_condition (summary, params_summary, index, param_type, |
1640 | &aggpos, EQ_EXPR, min, param_ops); | |
27d020cf JH |
1641 | else |
1642 | { | |
1643 | predicate p1, p2; | |
40a777e8 JH |
1644 | p1 = add_condition (summary, params_summary, index, param_type, |
1645 | &aggpos, GE_EXPR, min, param_ops); | |
1646 | p2 = add_condition (summary, params_summary,index, param_type, | |
1647 | &aggpos, LE_EXPR, max, param_ops); | |
27d020cf JH |
1648 | p = p1 & p2; |
1649 | } | |
99b1c316 MS |
1650 | *(class predicate *) e->aux |
1651 | = p.or_with (summary->conds, *(class predicate *) e->aux); | |
351e7c3b FX |
1652 | |
1653 | /* If there are too many disjoint case ranges, predicate for default | |
1654 | case might become too complicated. So add a limit here. */ | |
1655 | if (bound_count > bound_limit) | |
1656 | continue; | |
1657 | ||
1658 | bool new_range = true; | |
1659 | ||
1660 | if (!ranges.is_empty ()) | |
1661 | { | |
1662 | wide_int curr_wmin = wi::to_wide (min); | |
1663 | wide_int last_wmax = wi::to_wide (ranges.last ().second); | |
1664 | ||
1665 | /* Merge case ranges if they are continuous. */ | |
1666 | if (curr_wmin == last_wmax + 1) | |
1667 | new_range = false; | |
1668 | else if (vr_type == VR_ANTI_RANGE) | |
1669 | { | |
1670 | /* If two disjoint case ranges can be connected by anti-range | |
1671 | of switch index, combine them to one range. */ | |
1672 | if (wi::lt_p (vr_wmax, curr_wmin - 1, TYPE_SIGN (type))) | |
1673 | vr_type = VR_UNDEFINED; | |
1674 | else if (wi::le_p (vr_wmin, last_wmax + 1, TYPE_SIGN (type))) | |
1675 | new_range = false; | |
1676 | } | |
1677 | } | |
1678 | ||
351e7c3b FX |
1679 | /* Create/extend a case range. And we count endpoints of range set, |
1680 | this number nearly equals to number of conditions that we will create | |
1681 | for predicate of default case. */ | |
1682 | if (new_range) | |
1683 | { | |
1684 | bound_count += (min == max) ? 1 : 2; | |
1685 | ranges.safe_push (std::make_pair (min, max)); | |
1686 | } | |
1687 | else | |
1688 | { | |
1689 | bound_count += (ranges.last ().first == ranges.last ().second); | |
1690 | ranges.last ().second = max; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | e = gimple_switch_edge (cfun, last, 0); | |
1695 | if (bound_count > bound_limit) | |
1696 | { | |
1697 | *(class predicate *) e->aux = true; | |
4307a485 | 1698 | vec_free (param_ops); |
351e7c3b | 1699 | return; |
27d020cf | 1700 | } |
351e7c3b FX |
1701 | |
1702 | predicate p_seg = true; | |
1703 | predicate p_all = false; | |
1704 | ||
1705 | if (vr_type != VR_RANGE) | |
1706 | { | |
1707 | vr_wmin = wi::to_wide (TYPE_MIN_VALUE (type)); | |
1708 | vr_wmax = wi::to_wide (TYPE_MAX_VALUE (type)); | |
1709 | } | |
1710 | ||
1711 | /* Construct predicate to represent default range set that is negation of | |
1712 | all case ranges. Case range is classified as containing single/non-single | |
1713 | values. Suppose a piece of case ranges in the following. | |
1714 | ||
1715 | [D1...D2] [S1] ... [Sn] [D3...D4] | |
1716 | ||
1717 | To represent default case's range sets between two non-single value | |
1718 | case ranges (From D2 to D3), we construct predicate as: | |
1719 | ||
1720 | D2 < x < D3 && x != S1 && ... && x != Sn | |
1721 | */ | |
1722 | for (size_t i = 0; i < ranges.length (); i++) | |
1723 | { | |
1724 | tree min = ranges[i].first; | |
1725 | tree max = ranges[i].second; | |
1726 | ||
1727 | if (min == max) | |
40a777e8 JH |
1728 | p_seg &= add_condition (summary, params_summary, index, |
1729 | param_type, &aggpos, NE_EXPR, | |
4307a485 | 1730 | min, param_ops); |
351e7c3b FX |
1731 | else |
1732 | { | |
1733 | /* Do not create sub-predicate for range that is beyond low bound | |
1734 | of switch index. */ | |
1735 | if (wi::lt_p (vr_wmin, wi::to_wide (min), TYPE_SIGN (type))) | |
1736 | { | |
40a777e8 JH |
1737 | p_seg &= add_condition (summary, params_summary, index, |
1738 | param_type, &aggpos, | |
4307a485 | 1739 | LT_EXPR, min, param_ops); |
351e7c3b FX |
1740 | p_all = p_all.or_with (summary->conds, p_seg); |
1741 | } | |
1742 | ||
1743 | /* Do not create sub-predicate for range that is beyond up bound | |
1744 | of switch index. */ | |
1745 | if (wi::le_p (vr_wmax, wi::to_wide (max), TYPE_SIGN (type))) | |
1746 | { | |
1747 | p_seg = false; | |
1748 | break; | |
1749 | } | |
1750 | ||
40a777e8 JH |
1751 | p_seg = add_condition (summary, params_summary, index, |
1752 | param_type, &aggpos, GT_EXPR, | |
4307a485 | 1753 | max, param_ops); |
351e7c3b FX |
1754 | } |
1755 | } | |
1756 | ||
1757 | p_all = p_all.or_with (summary->conds, p_seg); | |
1758 | *(class predicate *) e->aux | |
1759 | = p_all.or_with (summary->conds, *(class predicate *) e->aux); | |
4307a485 FX |
1760 | |
1761 | vec_free (param_ops); | |
27d020cf JH |
1762 | } |
1763 | ||
1764 | ||
1765 | /* For each BB in NODE attach to its AUX pointer predicate under | |
1766 | which it is executable. */ | |
1767 | ||
1768 | static void | |
1769 | compute_bb_predicates (struct ipa_func_body_info *fbi, | |
1770 | struct cgraph_node *node, | |
40a777e8 JH |
1771 | class ipa_fn_summary *summary, |
1772 | class ipa_node_params *params_summary) | |
27d020cf JH |
1773 | { |
1774 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
1775 | bool done = false; | |
1776 | basic_block bb; | |
1777 | ||
1778 | FOR_EACH_BB_FN (bb, my_function) | |
1779 | { | |
40a777e8 JH |
1780 | set_cond_stmt_execution_predicate (fbi, summary, params_summary, bb); |
1781 | set_switch_stmt_execution_predicate (fbi, summary, params_summary, bb); | |
27d020cf JH |
1782 | } |
1783 | ||
1784 | /* Entry block is always executable. */ | |
1785 | ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux | |
1786 | = edge_predicate_pool.allocate (); | |
1787 | *(predicate *) ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux = true; | |
1788 | ||
1789 | /* A simple dataflow propagation of predicates forward in the CFG. | |
1790 | TODO: work in reverse postorder. */ | |
1791 | while (!done) | |
1792 | { | |
1793 | done = true; | |
1794 | FOR_EACH_BB_FN (bb, my_function) | |
1795 | { | |
1796 | predicate p = false; | |
1797 | edge e; | |
1798 | edge_iterator ei; | |
1799 | FOR_EACH_EDGE (e, ei, bb->preds) | |
1800 | { | |
1801 | if (e->src->aux) | |
1802 | { | |
1803 | predicate this_bb_predicate | |
1804 | = *(predicate *) e->src->aux; | |
1805 | if (e->aux) | |
99b1c316 | 1806 | this_bb_predicate &= (*(class predicate *) e->aux); |
27d020cf JH |
1807 | p = p.or_with (summary->conds, this_bb_predicate); |
1808 | if (p == true) | |
1809 | break; | |
1810 | } | |
1811 | } | |
efe12656 | 1812 | if (p != false) |
27d020cf | 1813 | { |
efe12656 FX |
1814 | basic_block pdom_bb; |
1815 | ||
27d020cf JH |
1816 | if (!bb->aux) |
1817 | { | |
1818 | done = false; | |
1819 | bb->aux = edge_predicate_pool.allocate (); | |
1820 | *((predicate *) bb->aux) = p; | |
1821 | } | |
1822 | else if (p != *(predicate *) bb->aux) | |
1823 | { | |
1824 | /* This OR operation is needed to ensure monotonous data flow | |
1825 | in the case we hit the limit on number of clauses and the | |
1826 | and/or operations above give approximate answers. */ | |
1827 | p = p.or_with (summary->conds, *(predicate *)bb->aux); | |
1828 | if (p != *(predicate *) bb->aux) | |
1829 | { | |
1830 | done = false; | |
1831 | *((predicate *) bb->aux) = p; | |
1832 | } | |
1833 | } | |
efe12656 FX |
1834 | |
1835 | /* For switch/if statement, we can OR-combine predicates of all | |
1836 | its cases/branches to get predicate for basic block in their | |
1837 | convergence point, but sometimes this will generate very | |
1838 | complicated predicate. Actually, we can get simplified | |
1839 | predicate in another way by using the fact that predicate | |
1840 | for a basic block must also hold true for its post dominators. | |
1841 | To be specific, basic block in convergence point of | |
1842 | conditional statement should include predicate of the | |
1843 | statement. */ | |
1844 | pdom_bb = get_immediate_dominator (CDI_POST_DOMINATORS, bb); | |
1845 | if (pdom_bb == EXIT_BLOCK_PTR_FOR_FN (my_function) || !pdom_bb) | |
1846 | ; | |
1847 | else if (!pdom_bb->aux) | |
1848 | { | |
1849 | done = false; | |
1850 | pdom_bb->aux = edge_predicate_pool.allocate (); | |
1851 | *((predicate *) pdom_bb->aux) = p; | |
1852 | } | |
1853 | else if (p != *(predicate *) pdom_bb->aux) | |
1854 | { | |
1855 | p = p.or_with (summary->conds, *(predicate *)pdom_bb->aux); | |
1856 | if (p != *(predicate *) pdom_bb->aux) | |
1857 | { | |
1858 | done = false; | |
1859 | *((predicate *) pdom_bb->aux) = p; | |
1860 | } | |
1861 | } | |
27d020cf JH |
1862 | } |
1863 | } | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | ||
1868 | /* Return predicate specifying when the STMT might have result that is not | |
1869 | a compile time constant. */ | |
1870 | ||
1871 | static predicate | |
c628d1c3 | 1872 | will_be_nonconstant_expr_predicate (ipa_func_body_info *fbi, |
99b1c316 | 1873 | class ipa_fn_summary *summary, |
40a777e8 | 1874 | class ipa_node_params *params_summary, |
27d020cf JH |
1875 | tree expr, |
1876 | vec<predicate> nonconstant_names) | |
1877 | { | |
1878 | tree parm; | |
1879 | int index; | |
27d020cf JH |
1880 | |
1881 | while (UNARY_CLASS_P (expr)) | |
1882 | expr = TREE_OPERAND (expr, 0); | |
1883 | ||
4307a485 | 1884 | parm = unmodified_parm (fbi, NULL, expr, NULL); |
c628d1c3 | 1885 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) |
40a777e8 | 1886 | return add_condition (summary, params_summary, index, TREE_TYPE (parm), NULL, |
4307a485 | 1887 | predicate::changed, NULL_TREE); |
27d020cf JH |
1888 | if (is_gimple_min_invariant (expr)) |
1889 | return false; | |
1890 | if (TREE_CODE (expr) == SSA_NAME) | |
1891 | return nonconstant_names[SSA_NAME_VERSION (expr)]; | |
1892 | if (BINARY_CLASS_P (expr) || COMPARISON_CLASS_P (expr)) | |
1893 | { | |
c628d1c3 MJ |
1894 | predicate p1 |
1895 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1896 | params_summary, |
c628d1c3 MJ |
1897 | TREE_OPERAND (expr, 0), |
1898 | nonconstant_names); | |
27d020cf JH |
1899 | if (p1 == true) |
1900 | return p1; | |
1901 | ||
c628d1c3 MJ |
1902 | predicate p2 |
1903 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1904 | params_summary, |
c628d1c3 MJ |
1905 | TREE_OPERAND (expr, 1), |
1906 | nonconstant_names); | |
27d020cf JH |
1907 | return p1.or_with (summary->conds, p2); |
1908 | } | |
1909 | else if (TREE_CODE (expr) == COND_EXPR) | |
1910 | { | |
c628d1c3 MJ |
1911 | predicate p1 |
1912 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1913 | params_summary, |
c628d1c3 MJ |
1914 | TREE_OPERAND (expr, 0), |
1915 | nonconstant_names); | |
27d020cf JH |
1916 | if (p1 == true) |
1917 | return p1; | |
1918 | ||
c628d1c3 MJ |
1919 | predicate p2 |
1920 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1921 | params_summary, |
c628d1c3 MJ |
1922 | TREE_OPERAND (expr, 1), |
1923 | nonconstant_names); | |
27d020cf JH |
1924 | if (p2 == true) |
1925 | return p2; | |
1926 | p1 = p1.or_with (summary->conds, p2); | |
c628d1c3 | 1927 | p2 = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 1928 | params_summary, |
27d020cf JH |
1929 | TREE_OPERAND (expr, 2), |
1930 | nonconstant_names); | |
1931 | return p2.or_with (summary->conds, p1); | |
1932 | } | |
5126ae0c KV |
1933 | else if (TREE_CODE (expr) == CALL_EXPR) |
1934 | return true; | |
27d020cf JH |
1935 | else |
1936 | { | |
1937 | debug_tree (expr); | |
1938 | gcc_unreachable (); | |
1939 | } | |
1940 | return false; | |
1941 | } | |
1942 | ||
1943 | ||
1944 | /* Return predicate specifying when the STMT might have result that is not | |
1945 | a compile time constant. */ | |
1946 | ||
1947 | static predicate | |
1948 | will_be_nonconstant_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1949 | class ipa_fn_summary *summary, |
40a777e8 | 1950 | class ipa_node_params *params_summary, |
27d020cf JH |
1951 | gimple *stmt, |
1952 | vec<predicate> nonconstant_names) | |
1953 | { | |
1954 | predicate p = true; | |
1955 | ssa_op_iter iter; | |
1956 | tree use; | |
4307a485 | 1957 | tree param_type = NULL_TREE; |
27d020cf JH |
1958 | predicate op_non_const; |
1959 | bool is_load; | |
1960 | int base_index; | |
27d020cf JH |
1961 | struct agg_position_info aggpos; |
1962 | ||
956d615d | 1963 | /* What statements might be optimized away |
27d020cf JH |
1964 | when their arguments are constant. */ |
1965 | if (gimple_code (stmt) != GIMPLE_ASSIGN | |
1966 | && gimple_code (stmt) != GIMPLE_COND | |
1967 | && gimple_code (stmt) != GIMPLE_SWITCH | |
1968 | && (gimple_code (stmt) != GIMPLE_CALL | |
1969 | || !(gimple_call_flags (stmt) & ECF_CONST))) | |
1970 | return p; | |
1971 | ||
1972 | /* Stores will stay anyway. */ | |
1973 | if (gimple_store_p (stmt)) | |
1974 | return p; | |
1975 | ||
1976 | is_load = gimple_assign_load_p (stmt); | |
1977 | ||
1978 | /* Loads can be optimized when the value is known. */ | |
1979 | if (is_load) | |
1980 | { | |
4307a485 FX |
1981 | tree op = gimple_assign_rhs1 (stmt); |
1982 | if (!decompose_param_expr (fbi, stmt, op, &base_index, ¶m_type, | |
1983 | &aggpos)) | |
27d020cf JH |
1984 | return p; |
1985 | } | |
1986 | else | |
1987 | base_index = -1; | |
1988 | ||
1989 | /* See if we understand all operands before we start | |
1990 | adding conditionals. */ | |
1991 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
1992 | { | |
c628d1c3 | 1993 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
1994 | /* For arguments we can build a condition. */ |
1995 | if (parm && ipa_get_param_decl_index (fbi->info, parm) >= 0) | |
1996 | continue; | |
1997 | if (TREE_CODE (use) != SSA_NAME) | |
1998 | return p; | |
1999 | /* If we know when operand is constant, | |
2000 | we still can say something useful. */ | |
2001 | if (nonconstant_names[SSA_NAME_VERSION (use)] != true) | |
2002 | continue; | |
2003 | return p; | |
2004 | } | |
2005 | ||
2006 | if (is_load) | |
2007 | op_non_const = | |
40a777e8 JH |
2008 | add_condition (summary, params_summary, |
2009 | base_index, param_type, &aggpos, | |
4307a485 | 2010 | predicate::changed, NULL_TREE); |
27d020cf JH |
2011 | else |
2012 | op_non_const = false; | |
2013 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
2014 | { | |
4307a485 | 2015 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
2016 | int index; |
2017 | ||
2018 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) | |
2019 | { | |
2020 | if (index != base_index) | |
40a777e8 JH |
2021 | p = add_condition (summary, params_summary, index, |
2022 | TREE_TYPE (parm), NULL, | |
4307a485 | 2023 | predicate::changed, NULL_TREE); |
27d020cf JH |
2024 | else |
2025 | continue; | |
2026 | } | |
2027 | else | |
2028 | p = nonconstant_names[SSA_NAME_VERSION (use)]; | |
2029 | op_non_const = p.or_with (summary->conds, op_non_const); | |
2030 | } | |
2031 | if ((gimple_code (stmt) == GIMPLE_ASSIGN || gimple_code (stmt) == GIMPLE_CALL) | |
2032 | && gimple_op (stmt, 0) | |
2033 | && TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME) | |
2034 | nonconstant_names[SSA_NAME_VERSION (gimple_op (stmt, 0))] | |
2035 | = op_non_const; | |
2036 | return op_non_const; | |
2037 | } | |
2038 | ||
2039 | struct record_modified_bb_info | |
2040 | { | |
3b2a6901 | 2041 | tree op; |
27d020cf JH |
2042 | bitmap bb_set; |
2043 | gimple *stmt; | |
2044 | }; | |
2045 | ||
956d615d | 2046 | /* Value is initialized in INIT_BB and used in USE_BB. We want to compute |
27d020cf | 2047 | probability how often it changes between USE_BB. |
3b2a6901 | 2048 | INIT_BB->count/USE_BB->count is an estimate, but if INIT_BB |
27d020cf JH |
2049 | is in different loop nest, we can do better. |
2050 | This is all just estimate. In theory we look for minimal cut separating | |
2051 | INIT_BB and USE_BB, but we only want to anticipate loop invariant motion | |
2052 | anyway. */ | |
2053 | ||
2054 | static basic_block | |
2055 | get_minimal_bb (basic_block init_bb, basic_block use_bb) | |
2056 | { | |
99b1c316 | 2057 | class loop *l = find_common_loop (init_bb->loop_father, use_bb->loop_father); |
e7a74006 | 2058 | if (l && l->header->count < init_bb->count) |
27d020cf JH |
2059 | return l->header; |
2060 | return init_bb; | |
2061 | } | |
2062 | ||
2063 | /* Callback of walk_aliased_vdefs. Records basic blocks where the value may be | |
2064 | set except for info->stmt. */ | |
2065 | ||
2066 | static bool | |
2067 | record_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef, void *data) | |
2068 | { | |
2069 | struct record_modified_bb_info *info = | |
2070 | (struct record_modified_bb_info *) data; | |
2071 | if (SSA_NAME_DEF_STMT (vdef) == info->stmt) | |
2072 | return false; | |
3b2a6901 JH |
2073 | if (gimple_clobber_p (SSA_NAME_DEF_STMT (vdef))) |
2074 | return false; | |
27d020cf JH |
2075 | bitmap_set_bit (info->bb_set, |
2076 | SSA_NAME_IS_DEFAULT_DEF (vdef) | |
2077 | ? ENTRY_BLOCK_PTR_FOR_FN (cfun)->index | |
2078 | : get_minimal_bb | |
2079 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2080 | gimple_bb (info->stmt))->index); | |
3b2a6901 JH |
2081 | if (dump_file) |
2082 | { | |
2083 | fprintf (dump_file, " Param "); | |
2084 | print_generic_expr (dump_file, info->op, TDF_SLIM); | |
2085 | fprintf (dump_file, " changed at bb %i, minimal: %i stmt: ", | |
2086 | gimple_bb (SSA_NAME_DEF_STMT (vdef))->index, | |
2087 | get_minimal_bb | |
2088 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2089 | gimple_bb (info->stmt))->index); | |
2090 | print_gimple_stmt (dump_file, SSA_NAME_DEF_STMT (vdef), 0); | |
2091 | } | |
27d020cf JH |
2092 | return false; |
2093 | } | |
2094 | ||
2095 | /* Return probability (based on REG_BR_PROB_BASE) that I-th parameter of STMT | |
2096 | will change since last invocation of STMT. | |
2097 | ||
2098 | Value 0 is reserved for compile time invariants. | |
2099 | For common parameters it is REG_BR_PROB_BASE. For loop invariants it | |
2100 | ought to be REG_BR_PROB_BASE / estimated_iters. */ | |
2101 | ||
2102 | static int | |
c628d1c3 | 2103 | param_change_prob (ipa_func_body_info *fbi, gimple *stmt, int i) |
27d020cf JH |
2104 | { |
2105 | tree op = gimple_call_arg (stmt, i); | |
2106 | basic_block bb = gimple_bb (stmt); | |
2107 | ||
2108 | if (TREE_CODE (op) == WITH_SIZE_EXPR) | |
2109 | op = TREE_OPERAND (op, 0); | |
2110 | ||
2111 | tree base = get_base_address (op); | |
2112 | ||
2113 | /* Global invariants never change. */ | |
2114 | if (is_gimple_min_invariant (base)) | |
2115 | return 0; | |
2116 | ||
2117 | /* We would have to do non-trivial analysis to really work out what | |
2118 | is the probability of value to change (i.e. when init statement | |
2119 | is in a sibling loop of the call). | |
2120 | ||
2121 | We do an conservative estimate: when call is executed N times more often | |
2122 | than the statement defining value, we take the frequency 1/N. */ | |
2123 | if (TREE_CODE (base) == SSA_NAME) | |
2124 | { | |
3b2a6901 | 2125 | profile_count init_count; |
27d020cf | 2126 | |
3b2a6901 | 2127 | if (!bb->count.nonzero_p ()) |
27d020cf JH |
2128 | return REG_BR_PROB_BASE; |
2129 | ||
2130 | if (SSA_NAME_IS_DEFAULT_DEF (base)) | |
3b2a6901 | 2131 | init_count = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2132 | else |
3b2a6901 | 2133 | init_count = get_minimal_bb |
27d020cf | 2134 | (gimple_bb (SSA_NAME_DEF_STMT (base)), |
3b2a6901 | 2135 | gimple_bb (stmt))->count; |
27d020cf | 2136 | |
3b2a6901 JH |
2137 | if (init_count < bb->count) |
2138 | return MAX ((init_count.to_sreal_scale (bb->count) | |
2139 | * REG_BR_PROB_BASE).to_int (), 1); | |
2140 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2141 | } |
2142 | else | |
2143 | { | |
2144 | ao_ref refd; | |
3b2a6901 | 2145 | profile_count max = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2146 | struct record_modified_bb_info info; |
27d020cf JH |
2147 | tree init = ctor_for_folding (base); |
2148 | ||
2149 | if (init != error_mark_node) | |
2150 | return 0; | |
3b2a6901 | 2151 | if (!bb->count.nonzero_p ()) |
27d020cf | 2152 | return REG_BR_PROB_BASE; |
3b2a6901 JH |
2153 | if (dump_file) |
2154 | { | |
4307a485 | 2155 | fprintf (dump_file, " Analyzing param change probability of "); |
3b2a6901 JH |
2156 | print_generic_expr (dump_file, op, TDF_SLIM); |
2157 | fprintf (dump_file, "\n"); | |
2158 | } | |
27d020cf | 2159 | ao_ref_init (&refd, op); |
3b2a6901 | 2160 | info.op = op; |
27d020cf JH |
2161 | info.stmt = stmt; |
2162 | info.bb_set = BITMAP_ALLOC (NULL); | |
c628d1c3 MJ |
2163 | int walked |
2164 | = walk_aliased_vdefs (&refd, gimple_vuse (stmt), record_modified, &info, | |
2165 | NULL, NULL, fbi->aa_walk_budget); | |
2166 | if (walked < 0 || bitmap_bit_p (info.bb_set, bb->index)) | |
27d020cf | 2167 | { |
3b2a6901 | 2168 | if (dump_file) |
c628d1c3 MJ |
2169 | { |
2170 | if (walked < 0) | |
2171 | fprintf (dump_file, " Ran out of AA walking budget.\n"); | |
2172 | else | |
2173 | fprintf (dump_file, " Set in same BB as used.\n"); | |
2174 | } | |
27d020cf JH |
2175 | BITMAP_FREE (info.bb_set); |
2176 | return REG_BR_PROB_BASE; | |
2177 | } | |
2178 | ||
3b2a6901 JH |
2179 | bitmap_iterator bi; |
2180 | unsigned index; | |
2181 | /* Lookup the most frequent update of the value and believe that | |
2182 | it dominates all the other; precise analysis here is difficult. */ | |
27d020cf | 2183 | EXECUTE_IF_SET_IN_BITMAP (info.bb_set, 0, index, bi) |
3b2a6901 JH |
2184 | max = max.max (BASIC_BLOCK_FOR_FN (cfun, index)->count); |
2185 | if (dump_file) | |
2186 | { | |
2187 | fprintf (dump_file, " Set with count "); | |
2188 | max.dump (dump_file); | |
2189 | fprintf (dump_file, " and used with count "); | |
2190 | bb->count.dump (dump_file); | |
2191 | fprintf (dump_file, " freq %f\n", | |
2192 | max.to_sreal_scale (bb->count).to_double ()); | |
2193 | } | |
27d020cf JH |
2194 | |
2195 | BITMAP_FREE (info.bb_set); | |
3b2a6901 JH |
2196 | if (max < bb->count) |
2197 | return MAX ((max.to_sreal_scale (bb->count) | |
2198 | * REG_BR_PROB_BASE).to_int (), 1); | |
2199 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2200 | } |
2201 | } | |
2202 | ||
2203 | /* Find whether a basic block BB is the final block of a (half) diamond CFG | |
2204 | sub-graph and if the predicate the condition depends on is known. If so, | |
2205 | return true and store the pointer the predicate in *P. */ | |
2206 | ||
2207 | static bool | |
c628d1c3 | 2208 | phi_result_unknown_predicate (ipa_func_body_info *fbi, |
40a777e8 JH |
2209 | ipa_fn_summary *summary, |
2210 | class ipa_node_params *params_summary, | |
2211 | basic_block bb, | |
27d020cf JH |
2212 | predicate *p, |
2213 | vec<predicate> nonconstant_names) | |
2214 | { | |
2215 | edge e; | |
2216 | edge_iterator ei; | |
2217 | basic_block first_bb = NULL; | |
2218 | gimple *stmt; | |
2219 | ||
2220 | if (single_pred_p (bb)) | |
2221 | { | |
2222 | *p = false; | |
2223 | return true; | |
2224 | } | |
2225 | ||
2226 | FOR_EACH_EDGE (e, ei, bb->preds) | |
2227 | { | |
2228 | if (single_succ_p (e->src)) | |
2229 | { | |
2230 | if (!single_pred_p (e->src)) | |
2231 | return false; | |
2232 | if (!first_bb) | |
2233 | first_bb = single_pred (e->src); | |
2234 | else if (single_pred (e->src) != first_bb) | |
2235 | return false; | |
2236 | } | |
2237 | else | |
2238 | { | |
2239 | if (!first_bb) | |
2240 | first_bb = e->src; | |
2241 | else if (e->src != first_bb) | |
2242 | return false; | |
2243 | } | |
2244 | } | |
2245 | ||
2246 | if (!first_bb) | |
2247 | return false; | |
2248 | ||
2249 | stmt = last_stmt (first_bb); | |
2250 | if (!stmt | |
2251 | || gimple_code (stmt) != GIMPLE_COND | |
2252 | || !is_gimple_ip_invariant (gimple_cond_rhs (stmt))) | |
2253 | return false; | |
2254 | ||
40a777e8 | 2255 | *p = will_be_nonconstant_expr_predicate (fbi, summary, params_summary, |
27d020cf JH |
2256 | gimple_cond_lhs (stmt), |
2257 | nonconstant_names); | |
2258 | if (*p == true) | |
2259 | return false; | |
2260 | else | |
2261 | return true; | |
2262 | } | |
2263 | ||
2264 | /* Given a PHI statement in a function described by inline properties SUMMARY | |
2265 | and *P being the predicate describing whether the selected PHI argument is | |
2266 | known, store a predicate for the result of the PHI statement into | |
2267 | NONCONSTANT_NAMES, if possible. */ | |
2268 | ||
2269 | static void | |
99b1c316 | 2270 | predicate_for_phi_result (class ipa_fn_summary *summary, gphi *phi, |
27d020cf JH |
2271 | predicate *p, |
2272 | vec<predicate> nonconstant_names) | |
2273 | { | |
2274 | unsigned i; | |
2275 | ||
2276 | for (i = 0; i < gimple_phi_num_args (phi); i++) | |
2277 | { | |
2278 | tree arg = gimple_phi_arg (phi, i)->def; | |
2279 | if (!is_gimple_min_invariant (arg)) | |
2280 | { | |
2281 | gcc_assert (TREE_CODE (arg) == SSA_NAME); | |
2282 | *p = p->or_with (summary->conds, | |
2283 | nonconstant_names[SSA_NAME_VERSION (arg)]); | |
2284 | if (*p == true) | |
2285 | return; | |
2286 | } | |
2287 | } | |
2288 | ||
2289 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2290 | { | |
2291 | fprintf (dump_file, "\t\tphi predicate: "); | |
2292 | p->dump (dump_file, summary->conds); | |
2293 | } | |
2294 | nonconstant_names[SSA_NAME_VERSION (gimple_phi_result (phi))] = *p; | |
2295 | } | |
2296 | ||
27d020cf JH |
2297 | /* For a typical usage of __builtin_expect (a<b, 1), we |
2298 | may introduce an extra relation stmt: | |
2299 | With the builtin, we have | |
2300 | t1 = a <= b; | |
2301 | t2 = (long int) t1; | |
2302 | t3 = __builtin_expect (t2, 1); | |
2303 | if (t3 != 0) | |
2304 | goto ... | |
2305 | Without the builtin, we have | |
2306 | if (a<=b) | |
2307 | goto... | |
2308 | This affects the size/time estimation and may have | |
2309 | an impact on the earlier inlining. | |
2310 | Here find this pattern and fix it up later. */ | |
2311 | ||
2312 | static gimple * | |
2313 | find_foldable_builtin_expect (basic_block bb) | |
2314 | { | |
2315 | gimple_stmt_iterator bsi; | |
2316 | ||
2317 | for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
2318 | { | |
2319 | gimple *stmt = gsi_stmt (bsi); | |
2320 | if (gimple_call_builtin_p (stmt, BUILT_IN_EXPECT) | |
1e9168b2 | 2321 | || gimple_call_builtin_p (stmt, BUILT_IN_EXPECT_WITH_PROBABILITY) |
27d020cf JH |
2322 | || gimple_call_internal_p (stmt, IFN_BUILTIN_EXPECT)) |
2323 | { | |
2324 | tree var = gimple_call_lhs (stmt); | |
2325 | tree arg = gimple_call_arg (stmt, 0); | |
2326 | use_operand_p use_p; | |
2327 | gimple *use_stmt; | |
2328 | bool match = false; | |
2329 | bool done = false; | |
2330 | ||
2331 | if (!var || !arg) | |
2332 | continue; | |
2333 | gcc_assert (TREE_CODE (var) == SSA_NAME); | |
2334 | ||
2335 | while (TREE_CODE (arg) == SSA_NAME) | |
2336 | { | |
2337 | gimple *stmt_tmp = SSA_NAME_DEF_STMT (arg); | |
2338 | if (!is_gimple_assign (stmt_tmp)) | |
2339 | break; | |
2340 | switch (gimple_assign_rhs_code (stmt_tmp)) | |
2341 | { | |
2342 | case LT_EXPR: | |
2343 | case LE_EXPR: | |
2344 | case GT_EXPR: | |
2345 | case GE_EXPR: | |
2346 | case EQ_EXPR: | |
2347 | case NE_EXPR: | |
2348 | match = true; | |
2349 | done = true; | |
2350 | break; | |
2351 | CASE_CONVERT: | |
2352 | break; | |
2353 | default: | |
2354 | done = true; | |
2355 | break; | |
2356 | } | |
2357 | if (done) | |
2358 | break; | |
2359 | arg = gimple_assign_rhs1 (stmt_tmp); | |
2360 | } | |
2361 | ||
2362 | if (match && single_imm_use (var, &use_p, &use_stmt) | |
2363 | && gimple_code (use_stmt) == GIMPLE_COND) | |
2364 | return use_stmt; | |
2365 | } | |
2366 | } | |
2367 | return NULL; | |
2368 | } | |
2369 | ||
2370 | /* Return true when the basic blocks contains only clobbers followed by RESX. | |
2371 | Such BBs are kept around to make removal of dead stores possible with | |
2372 | presence of EH and will be optimized out by optimize_clobbers later in the | |
2373 | game. | |
2374 | ||
956d615d | 2375 | NEED_EH is used to recurse in case the clobber has non-EH predecessors |
27d020cf JH |
2376 | that can be clobber only, too.. When it is false, the RESX is not necessary |
2377 | on the end of basic block. */ | |
2378 | ||
2379 | static bool | |
2380 | clobber_only_eh_bb_p (basic_block bb, bool need_eh = true) | |
2381 | { | |
2382 | gimple_stmt_iterator gsi = gsi_last_bb (bb); | |
2383 | edge_iterator ei; | |
2384 | edge e; | |
2385 | ||
2386 | if (need_eh) | |
2387 | { | |
2388 | if (gsi_end_p (gsi)) | |
2389 | return false; | |
2390 | if (gimple_code (gsi_stmt (gsi)) != GIMPLE_RESX) | |
2391 | return false; | |
2392 | gsi_prev (&gsi); | |
2393 | } | |
2394 | else if (!single_succ_p (bb)) | |
2395 | return false; | |
2396 | ||
2397 | for (; !gsi_end_p (gsi); gsi_prev (&gsi)) | |
2398 | { | |
2399 | gimple *stmt = gsi_stmt (gsi); | |
2400 | if (is_gimple_debug (stmt)) | |
2401 | continue; | |
2402 | if (gimple_clobber_p (stmt)) | |
2403 | continue; | |
2404 | if (gimple_code (stmt) == GIMPLE_LABEL) | |
2405 | break; | |
2406 | return false; | |
2407 | } | |
2408 | ||
956d615d | 2409 | /* See if all predecessors are either throws or clobber only BBs. */ |
27d020cf JH |
2410 | FOR_EACH_EDGE (e, ei, bb->preds) |
2411 | if (!(e->flags & EDGE_EH) | |
2412 | && !clobber_only_eh_bb_p (e->src, false)) | |
2413 | return false; | |
2414 | ||
2415 | return true; | |
2416 | } | |
2417 | ||
2418 | /* Return true if STMT compute a floating point expression that may be affected | |
2419 | by -ffast-math and similar flags. */ | |
2420 | ||
2421 | static bool | |
2422 | fp_expression_p (gimple *stmt) | |
2423 | { | |
2424 | ssa_op_iter i; | |
2425 | tree op; | |
2426 | ||
2427 | FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_DEF|SSA_OP_USE) | |
2428 | if (FLOAT_TYPE_P (TREE_TYPE (op))) | |
2429 | return true; | |
2430 | return false; | |
2431 | } | |
2432 | ||
0bceb671 JH |
2433 | /* Analyze function body for NODE. |
2434 | EARLY indicates run from early optimization pipeline. */ | |
27d020cf JH |
2435 | |
2436 | static void | |
0bceb671 | 2437 | analyze_function_body (struct cgraph_node *node, bool early) |
27d020cf | 2438 | { |
9340d345 | 2439 | sreal time = opt_for_fn (node->decl, param_uninlined_function_time); |
27d020cf | 2440 | /* Estimate static overhead for function prologue/epilogue and alignment. */ |
9340d345 | 2441 | int size = opt_for_fn (node->decl, param_uninlined_function_insns); |
27d020cf JH |
2442 | /* Benefits are scaled by probability of elimination that is in range |
2443 | <0,2>. */ | |
2444 | basic_block bb; | |
2445 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
b71289b1 | 2446 | sreal freq; |
99b1c316 | 2447 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
40a777e8 | 2448 | class ipa_node_params *params_summary = early ? NULL : IPA_NODE_REF (node); |
27d020cf JH |
2449 | predicate bb_predicate; |
2450 | struct ipa_func_body_info fbi; | |
2451 | vec<predicate> nonconstant_names = vNULL; | |
2452 | int nblocks, n; | |
2453 | int *order; | |
27d020cf JH |
2454 | gimple *fix_builtin_expect_stmt; |
2455 | ||
2456 | gcc_assert (my_function && my_function->cfg); | |
2457 | gcc_assert (cfun == my_function); | |
2458 | ||
2459 | memset(&fbi, 0, sizeof(fbi)); | |
ddfb1317 | 2460 | vec_free (info->conds); |
27d020cf | 2461 | info->conds = NULL; |
ddfb1317 | 2462 | vec_free (info->size_time_table); |
27d020cf JH |
2463 | info->size_time_table = NULL; |
2464 | ||
2465 | /* When optimizing and analyzing for IPA inliner, initialize loop optimizer | |
2466 | so we can produce proper inline hints. | |
2467 | ||
2468 | When optimizing and analyzing for early inliner, initialize node params | |
2469 | so we can produce correct BB predicates. */ | |
2470 | ||
2471 | if (opt_for_fn (node->decl, optimize)) | |
2472 | { | |
2473 | calculate_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2474 | calculate_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2475 | if (!early) |
2476 | loop_optimizer_init (LOOPS_NORMAL | LOOPS_HAVE_RECORDED_EXITS); | |
2477 | else | |
2478 | { | |
2479 | ipa_check_create_node_params (); | |
2480 | ipa_initialize_node_params (node); | |
2481 | } | |
2482 | ||
2483 | if (ipa_node_params_sum) | |
2484 | { | |
2485 | fbi.node = node; | |
2486 | fbi.info = IPA_NODE_REF (node); | |
2487 | fbi.bb_infos = vNULL; | |
cb3874dc | 2488 | fbi.bb_infos.safe_grow_cleared (last_basic_block_for_fn (cfun), true); |
c628d1c3 | 2489 | fbi.param_count = count_formal_params (node->decl); |
fdfd7f53 | 2490 | fbi.aa_walk_budget = opt_for_fn (node->decl, param_ipa_max_aa_steps); |
c628d1c3 | 2491 | |
27d020cf | 2492 | nonconstant_names.safe_grow_cleared |
cb3874dc | 2493 | (SSANAMES (my_function)->length (), true); |
27d020cf JH |
2494 | } |
2495 | } | |
2496 | ||
2497 | if (dump_file) | |
2498 | fprintf (dump_file, "\nAnalyzing function body size: %s\n", | |
3629ff8a | 2499 | node->dump_name ()); |
27d020cf JH |
2500 | |
2501 | /* When we run into maximal number of entries, we assign everything to the | |
2502 | constant truth case. Be sure to have it in list. */ | |
2503 | bb_predicate = true; | |
2504 | info->account_size_time (0, 0, bb_predicate, bb_predicate); | |
2505 | ||
2506 | bb_predicate = predicate::not_inlined (); | |
9340d345 JH |
2507 | info->account_size_time (opt_for_fn (node->decl, |
2508 | param_uninlined_function_insns) | |
d06f73a3 | 2509 | * ipa_fn_summary::size_scale, |
9340d345 JH |
2510 | opt_for_fn (node->decl, |
2511 | param_uninlined_function_time), | |
d06f73a3 | 2512 | bb_predicate, |
27d020cf JH |
2513 | bb_predicate); |
2514 | ||
2515 | if (fbi.info) | |
40a777e8 | 2516 | compute_bb_predicates (&fbi, node, info, params_summary); |
27d020cf JH |
2517 | order = XNEWVEC (int, n_basic_blocks_for_fn (cfun)); |
2518 | nblocks = pre_and_rev_post_order_compute (NULL, order, false); | |
2519 | for (n = 0; n < nblocks; n++) | |
2520 | { | |
2521 | bb = BASIC_BLOCK_FOR_FN (cfun, order[n]); | |
b71289b1 | 2522 | freq = bb->count.to_sreal_scale (ENTRY_BLOCK_PTR_FOR_FN (cfun)->count); |
27d020cf JH |
2523 | if (clobber_only_eh_bb_p (bb)) |
2524 | { | |
2525 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2526 | fprintf (dump_file, "\n Ignoring BB %i;" | |
2527 | " it will be optimized away by cleanup_clobbers\n", | |
2528 | bb->index); | |
2529 | continue; | |
2530 | } | |
2531 | ||
2532 | /* TODO: Obviously predicates can be propagated down across CFG. */ | |
2533 | if (fbi.info) | |
2534 | { | |
2535 | if (bb->aux) | |
2536 | bb_predicate = *(predicate *) bb->aux; | |
2537 | else | |
2538 | bb_predicate = false; | |
2539 | } | |
2540 | else | |
2541 | bb_predicate = true; | |
2542 | ||
2543 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2544 | { | |
2545 | fprintf (dump_file, "\n BB %i predicate:", bb->index); | |
2546 | bb_predicate.dump (dump_file, info->conds); | |
2547 | } | |
2548 | ||
2549 | if (fbi.info && nonconstant_names.exists ()) | |
2550 | { | |
2551 | predicate phi_predicate; | |
2552 | bool first_phi = true; | |
2553 | ||
2554 | for (gphi_iterator bsi = gsi_start_phis (bb); !gsi_end_p (bsi); | |
2555 | gsi_next (&bsi)) | |
2556 | { | |
2557 | if (first_phi | |
40a777e8 JH |
2558 | && !phi_result_unknown_predicate (&fbi, info, |
2559 | params_summary, | |
2560 | bb, | |
27d020cf JH |
2561 | &phi_predicate, |
2562 | nonconstant_names)) | |
2563 | break; | |
2564 | first_phi = false; | |
2565 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2566 | { | |
2567 | fprintf (dump_file, " "); | |
2568 | print_gimple_stmt (dump_file, gsi_stmt (bsi), 0); | |
2569 | } | |
2570 | predicate_for_phi_result (info, bsi.phi (), &phi_predicate, | |
2571 | nonconstant_names); | |
2572 | } | |
2573 | } | |
2574 | ||
2575 | fix_builtin_expect_stmt = find_foldable_builtin_expect (bb); | |
2576 | ||
d3ed5b56 JH |
2577 | for (gimple_stmt_iterator bsi = gsi_start_nondebug_bb (bb); |
2578 | !gsi_end_p (bsi); gsi_next_nondebug (&bsi)) | |
27d020cf JH |
2579 | { |
2580 | gimple *stmt = gsi_stmt (bsi); | |
2581 | int this_size = estimate_num_insns (stmt, &eni_size_weights); | |
2582 | int this_time = estimate_num_insns (stmt, &eni_time_weights); | |
2583 | int prob; | |
2584 | predicate will_be_nonconstant; | |
2585 | ||
2586 | /* This relation stmt should be folded after we remove | |
956d615d | 2587 | __builtin_expect call. Adjust the cost here. */ |
27d020cf JH |
2588 | if (stmt == fix_builtin_expect_stmt) |
2589 | { | |
2590 | this_size--; | |
2591 | this_time--; | |
2592 | } | |
2593 | ||
2594 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2595 | { | |
2596 | fprintf (dump_file, " "); | |
2597 | print_gimple_stmt (dump_file, stmt, 0); | |
2598 | fprintf (dump_file, "\t\tfreq:%3.2f size:%3i time:%3i\n", | |
b71289b1 | 2599 | freq.to_double (), this_size, |
27d020cf JH |
2600 | this_time); |
2601 | } | |
2602 | ||
27d020cf JH |
2603 | if (is_gimple_call (stmt) |
2604 | && !gimple_call_internal_p (stmt)) | |
2605 | { | |
2606 | struct cgraph_edge *edge = node->get_edge (stmt); | |
99353fcf | 2607 | ipa_call_summary *es = ipa_call_summaries->get_create (edge); |
27d020cf JH |
2608 | |
2609 | /* Special case: results of BUILT_IN_CONSTANT_P will be always | |
2610 | resolved as constant. We however don't want to optimize | |
2611 | out the cgraph edges. */ | |
2612 | if (nonconstant_names.exists () | |
2613 | && gimple_call_builtin_p (stmt, BUILT_IN_CONSTANT_P) | |
2614 | && gimple_call_lhs (stmt) | |
2615 | && TREE_CODE (gimple_call_lhs (stmt)) == SSA_NAME) | |
2616 | { | |
2617 | predicate false_p = false; | |
2618 | nonconstant_names[SSA_NAME_VERSION (gimple_call_lhs (stmt))] | |
2619 | = false_p; | |
2620 | } | |
2621 | if (ipa_node_params_sum) | |
2622 | { | |
2623 | int count = gimple_call_num_args (stmt); | |
2624 | int i; | |
2625 | ||
2626 | if (count) | |
cb3874dc | 2627 | es->param.safe_grow_cleared (count, true); |
27d020cf JH |
2628 | for (i = 0; i < count; i++) |
2629 | { | |
c628d1c3 | 2630 | int prob = param_change_prob (&fbi, stmt, i); |
27d020cf JH |
2631 | gcc_assert (prob >= 0 && prob <= REG_BR_PROB_BASE); |
2632 | es->param[i].change_prob = prob; | |
2633 | } | |
2634 | } | |
2635 | ||
2636 | es->call_stmt_size = this_size; | |
2637 | es->call_stmt_time = this_time; | |
2638 | es->loop_depth = bb_loop_depth (bb); | |
2639 | edge_set_predicate (edge, &bb_predicate); | |
959b8c82 JH |
2640 | if (edge->speculative) |
2641 | { | |
845bb366 JH |
2642 | cgraph_edge *indirect |
2643 | = edge->speculative_call_indirect_edge (); | |
959b8c82 | 2644 | ipa_call_summary *es2 |
d380e329 | 2645 | = ipa_call_summaries->get_create (indirect); |
959b8c82 JH |
2646 | ipa_call_summaries->duplicate (edge, indirect, |
2647 | es, es2); | |
f1ba88b1 | 2648 | |
845bb366 JH |
2649 | /* Edge is the first direct call. |
2650 | create and duplicate call summaries for multiple | |
f1ba88b1 | 2651 | speculative call targets. */ |
845bb366 JH |
2652 | for (cgraph_edge *direct |
2653 | = edge->next_speculative_call_target (); | |
2654 | direct; | |
2655 | direct = direct->next_speculative_call_target ()) | |
2656 | { | |
2657 | ipa_call_summary *es3 | |
2658 | = ipa_call_summaries->get_create (direct); | |
2659 | ipa_call_summaries->duplicate (edge, direct, | |
2660 | es, es3); | |
2661 | } | |
959b8c82 | 2662 | } |
27d020cf JH |
2663 | } |
2664 | ||
956d615d | 2665 | /* TODO: When conditional jump or switch is known to be constant, but |
27d020cf JH |
2666 | we did not translate it into the predicates, we really can account |
2667 | just maximum of the possible paths. */ | |
2668 | if (fbi.info) | |
2669 | will_be_nonconstant | |
40a777e8 | 2670 | = will_be_nonconstant_predicate (&fbi, info, params_summary, |
27d020cf JH |
2671 | stmt, nonconstant_names); |
2672 | else | |
2673 | will_be_nonconstant = true; | |
2674 | if (this_time || this_size) | |
2675 | { | |
b71289b1 | 2676 | sreal final_time = (sreal)this_time * freq; |
27d020cf | 2677 | |
c628d1c3 | 2678 | prob = eliminated_by_inlining_prob (&fbi, stmt); |
27d020cf JH |
2679 | if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS)) |
2680 | fprintf (dump_file, | |
2681 | "\t\t50%% will be eliminated by inlining\n"); | |
2682 | if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS)) | |
2683 | fprintf (dump_file, "\t\tWill be eliminated by inlining\n"); | |
2684 | ||
99b1c316 | 2685 | class predicate p = bb_predicate & will_be_nonconstant; |
27d020cf JH |
2686 | |
2687 | /* We can ignore statement when we proved it is never going | |
67914693 | 2688 | to happen, but we cannot do that for call statements |
27d020cf JH |
2689 | because edges are accounted specially. */ |
2690 | ||
2691 | if (*(is_gimple_call (stmt) ? &bb_predicate : &p) != false) | |
2692 | { | |
b71289b1 | 2693 | time += final_time; |
27d020cf JH |
2694 | size += this_size; |
2695 | } | |
2696 | ||
2697 | /* We account everything but the calls. Calls have their own | |
2698 | size/time info attached to cgraph edges. This is necessary | |
2699 | in order to make the cost disappear after inlining. */ | |
2700 | if (!is_gimple_call (stmt)) | |
2701 | { | |
2702 | if (prob) | |
2703 | { | |
2704 | predicate ip = bb_predicate & predicate::not_inlined (); | |
2705 | info->account_size_time (this_size * prob, | |
121356b0 | 2706 | (final_time * prob) / 2, ip, |
27d020cf JH |
2707 | p); |
2708 | } | |
2709 | if (prob != 2) | |
2710 | info->account_size_time (this_size * (2 - prob), | |
121356b0 | 2711 | (final_time * (2 - prob) / 2), |
27d020cf JH |
2712 | bb_predicate, |
2713 | p); | |
2714 | } | |
2715 | ||
2716 | if (!info->fp_expressions && fp_expression_p (stmt)) | |
2717 | { | |
2718 | info->fp_expressions = true; | |
2719 | if (dump_file) | |
2720 | fprintf (dump_file, " fp_expression set\n"); | |
2721 | } | |
a20f263b | 2722 | } |
27d020cf | 2723 | |
a20f263b JH |
2724 | /* Account cost of address calculations in the statements. */ |
2725 | for (unsigned int i = 0; i < gimple_num_ops (stmt); i++) | |
2726 | { | |
2727 | for (tree op = gimple_op (stmt, i); | |
2728 | op && handled_component_p (op); | |
2729 | op = TREE_OPERAND (op, 0)) | |
2730 | if ((TREE_CODE (op) == ARRAY_REF | |
2731 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
2732 | && TREE_CODE (TREE_OPERAND (op, 1)) == SSA_NAME) | |
2733 | { | |
2734 | predicate p = bb_predicate; | |
2735 | if (fbi.info) | |
2736 | p = p & will_be_nonconstant_expr_predicate | |
40a777e8 JH |
2737 | (&fbi, info, params_summary, |
2738 | TREE_OPERAND (op, 1), | |
a20f263b JH |
2739 | nonconstant_names); |
2740 | if (p != false) | |
2741 | { | |
2742 | time += freq; | |
2743 | size += 1; | |
2744 | if (dump_file) | |
2745 | fprintf (dump_file, | |
2746 | "\t\tAccounting address calculation.\n"); | |
2747 | info->account_size_time (ipa_fn_summary::size_scale, | |
2748 | freq, | |
2749 | bb_predicate, | |
2750 | p); | |
2751 | } | |
2752 | } | |
27d020cf | 2753 | } |
a20f263b | 2754 | |
27d020cf JH |
2755 | } |
2756 | } | |
27d020cf JH |
2757 | free (order); |
2758 | ||
2759 | if (nonconstant_names.exists () && !early) | |
2760 | { | |
99b1c316 | 2761 | class loop *loop; |
27d020cf JH |
2762 | predicate loop_iterations = true; |
2763 | predicate loop_stride = true; | |
2764 | ||
2765 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2766 | flow_loops_dump (dump_file, NULL, 0); | |
2767 | scev_initialize (); | |
2768 | FOR_EACH_LOOP (loop, 0) | |
2769 | { | |
2770 | vec<edge> exits; | |
2771 | edge ex; | |
2772 | unsigned int j; | |
99b1c316 | 2773 | class tree_niter_desc niter_desc; |
776e48e0 JJ |
2774 | if (loop->header->aux) |
2775 | bb_predicate = *(predicate *) loop->header->aux; | |
2776 | else | |
2777 | bb_predicate = false; | |
27d020cf JH |
2778 | |
2779 | exits = get_loop_exit_edges (loop); | |
2780 | FOR_EACH_VEC_ELT (exits, j, ex) | |
2781 | if (number_of_iterations_exit (loop, ex, &niter_desc, false) | |
2782 | && !is_gimple_min_invariant (niter_desc.niter)) | |
2783 | { | |
2784 | predicate will_be_nonconstant | |
c628d1c3 | 2785 | = will_be_nonconstant_expr_predicate (&fbi, info, |
40a777e8 | 2786 | params_summary, |
27d020cf JH |
2787 | niter_desc.niter, |
2788 | nonconstant_names); | |
2789 | if (will_be_nonconstant != true) | |
2790 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
2791 | if (will_be_nonconstant != true | |
2792 | && will_be_nonconstant != false) | |
2793 | /* This is slightly inprecise. We may want to represent each | |
2794 | loop with independent predicate. */ | |
2795 | loop_iterations &= will_be_nonconstant; | |
2796 | } | |
2797 | exits.release (); | |
2798 | } | |
2799 | ||
2800 | /* To avoid quadratic behavior we analyze stride predicates only | |
2801 | with respect to the containing loop. Thus we simply iterate | |
2802 | over all defs in the outermost loop body. */ | |
2803 | for (loop = loops_for_fn (cfun)->tree_root->inner; | |
2804 | loop != NULL; loop = loop->next) | |
2805 | { | |
2806 | basic_block *body = get_loop_body (loop); | |
2807 | for (unsigned i = 0; i < loop->num_nodes; i++) | |
2808 | { | |
2809 | gimple_stmt_iterator gsi; | |
776e48e0 JJ |
2810 | if (body[i]->aux) |
2811 | bb_predicate = *(predicate *) body[i]->aux; | |
2812 | else | |
2813 | bb_predicate = false; | |
27d020cf JH |
2814 | for (gsi = gsi_start_bb (body[i]); !gsi_end_p (gsi); |
2815 | gsi_next (&gsi)) | |
2816 | { | |
2817 | gimple *stmt = gsi_stmt (gsi); | |
2818 | ||
2819 | if (!is_gimple_assign (stmt)) | |
2820 | continue; | |
2821 | ||
2822 | tree def = gimple_assign_lhs (stmt); | |
2823 | if (TREE_CODE (def) != SSA_NAME) | |
2824 | continue; | |
2825 | ||
2826 | affine_iv iv; | |
2827 | if (!simple_iv (loop_containing_stmt (stmt), | |
2828 | loop_containing_stmt (stmt), | |
2829 | def, &iv, true) | |
2830 | || is_gimple_min_invariant (iv.step)) | |
2831 | continue; | |
2832 | ||
2833 | predicate will_be_nonconstant | |
40a777e8 JH |
2834 | = will_be_nonconstant_expr_predicate (&fbi, info, |
2835 | params_summary, | |
2836 | iv.step, | |
27d020cf JH |
2837 | nonconstant_names); |
2838 | if (will_be_nonconstant != true) | |
2839 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
2840 | if (will_be_nonconstant != true | |
2841 | && will_be_nonconstant != false) | |
2842 | /* This is slightly inprecise. We may want to represent | |
2843 | each loop with independent predicate. */ | |
2844 | loop_stride = loop_stride & will_be_nonconstant; | |
2845 | } | |
2846 | } | |
2847 | free (body); | |
2848 | } | |
56f62793 | 2849 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
cf9b0b5f ML |
2850 | set_hint_predicate (&s->loop_iterations, loop_iterations); |
2851 | set_hint_predicate (&s->loop_stride, loop_stride); | |
27d020cf JH |
2852 | scev_finalize (); |
2853 | } | |
2854 | FOR_ALL_BB_FN (bb, my_function) | |
2855 | { | |
2856 | edge e; | |
2857 | edge_iterator ei; | |
2858 | ||
2859 | if (bb->aux) | |
2860 | edge_predicate_pool.remove ((predicate *)bb->aux); | |
2861 | bb->aux = NULL; | |
2862 | FOR_EACH_EDGE (e, ei, bb->succs) | |
2863 | { | |
2864 | if (e->aux) | |
2865 | edge_predicate_pool.remove ((predicate *) e->aux); | |
2866 | e->aux = NULL; | |
2867 | } | |
2868 | } | |
56f62793 | 2869 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 2870 | ipa_size_summary *ss = ipa_size_summaries->get (node); |
cf9b0b5f | 2871 | s->time = time; |
f658ad30 | 2872 | ss->self_size = size; |
27d020cf JH |
2873 | nonconstant_names.release (); |
2874 | ipa_release_body_info (&fbi); | |
2875 | if (opt_for_fn (node->decl, optimize)) | |
2876 | { | |
2877 | if (!early) | |
2878 | loop_optimizer_finalize (); | |
2879 | else if (!ipa_edge_args_sum) | |
2880 | ipa_free_all_node_params (); | |
2881 | free_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2882 | free_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2883 | } |
2884 | if (dump_file) | |
2885 | { | |
2886 | fprintf (dump_file, "\n"); | |
0bceb671 | 2887 | ipa_dump_fn_summary (dump_file, node); |
27d020cf JH |
2888 | } |
2889 | } | |
2890 | ||
2891 | ||
0bceb671 JH |
2892 | /* Compute function summary. |
2893 | EARLY is true when we compute parameters during early opts. */ | |
27d020cf JH |
2894 | |
2895 | void | |
0bceb671 | 2896 | compute_fn_summary (struct cgraph_node *node, bool early) |
27d020cf JH |
2897 | { |
2898 | HOST_WIDE_INT self_stack_size; | |
2899 | struct cgraph_edge *e; | |
27d020cf | 2900 | |
a62bfab5 | 2901 | gcc_assert (!node->inlined_to); |
27d020cf | 2902 | |
0bceb671 JH |
2903 | if (!ipa_fn_summaries) |
2904 | ipa_fn_summary_alloc (); | |
27d020cf | 2905 | |
56f62793 ML |
2906 | /* Create a new ipa_fn_summary. */ |
2907 | ((ipa_fn_summary_t *)ipa_fn_summaries)->remove_callees (node); | |
2908 | ipa_fn_summaries->remove (node); | |
f658ad30 JH |
2909 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
2910 | class ipa_size_summary *size_info = ipa_size_summaries->get_create (node); | |
27d020cf JH |
2911 | |
2912 | /* Estimate the stack size for the function if we're optimizing. */ | |
2913 | self_stack_size = optimize && !node->thunk.thunk_p | |
2914 | ? estimated_stack_frame_size (node) : 0; | |
f658ad30 | 2915 | size_info->estimated_self_stack_size = self_stack_size; |
27d020cf | 2916 | info->estimated_stack_size = self_stack_size; |
27d020cf JH |
2917 | |
2918 | if (node->thunk.thunk_p) | |
2919 | { | |
99353fcf | 2920 | ipa_call_summary *es = ipa_call_summaries->get_create (node->callees); |
27d020cf JH |
2921 | predicate t = true; |
2922 | ||
87f94429 | 2923 | node->can_change_signature = false; |
27d020cf JH |
2924 | es->call_stmt_size = eni_size_weights.call_cost; |
2925 | es->call_stmt_time = eni_time_weights.call_cost; | |
d06f73a3 | 2926 | info->account_size_time (ipa_fn_summary::size_scale |
9340d345 JH |
2927 | * opt_for_fn (node->decl, |
2928 | param_uninlined_function_thunk_insns), | |
2929 | opt_for_fn (node->decl, | |
2930 | param_uninlined_function_thunk_time), t, t); | |
27d020cf | 2931 | t = predicate::not_inlined (); |
0bceb671 JH |
2932 | info->account_size_time (2 * ipa_fn_summary::size_scale, 0, t, t); |
2933 | ipa_update_overall_fn_summary (node); | |
f658ad30 | 2934 | size_info->self_size = size_info->size; |
dbcdd561 | 2935 | if (stdarg_p (TREE_TYPE (node->decl))) |
ca04a532 ML |
2936 | { |
2937 | info->inlinable = false; | |
2938 | node->callees->inline_failed = CIF_VARIADIC_THUNK; | |
2939 | } | |
27d020cf JH |
2940 | else |
2941 | info->inlinable = true; | |
2942 | } | |
2943 | else | |
2944 | { | |
2945 | /* Even is_gimple_min_invariant rely on current_function_decl. */ | |
2946 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
2947 | ||
ac0573de JH |
2948 | /* During IPA profile merging we may be called w/o virtual SSA form |
2949 | built. */ | |
2950 | update_ssa (TODO_update_ssa_only_virtuals); | |
2951 | ||
27d020cf JH |
2952 | /* Can this function be inlined at all? */ |
2953 | if (!opt_for_fn (node->decl, optimize) | |
2954 | && !lookup_attribute ("always_inline", | |
2955 | DECL_ATTRIBUTES (node->decl))) | |
2956 | info->inlinable = false; | |
2957 | else | |
2958 | info->inlinable = tree_inlinable_function_p (node->decl); | |
2959 | ||
27d020cf | 2960 | /* Type attributes can use parameter indices to describe them. */ |
3d8fb311 JJ |
2961 | if (TYPE_ATTRIBUTES (TREE_TYPE (node->decl)) |
2962 | /* Likewise for #pragma omp declare simd functions or functions | |
2963 | with simd attribute. */ | |
2964 | || lookup_attribute ("omp declare simd", | |
2965 | DECL_ATTRIBUTES (node->decl))) | |
87f94429 | 2966 | node->can_change_signature = false; |
27d020cf JH |
2967 | else |
2968 | { | |
2969 | /* Otherwise, inlinable functions always can change signature. */ | |
2970 | if (info->inlinable) | |
87f94429 | 2971 | node->can_change_signature = true; |
27d020cf JH |
2972 | else |
2973 | { | |
67914693 | 2974 | /* Functions calling builtin_apply cannot change signature. */ |
27d020cf JH |
2975 | for (e = node->callees; e; e = e->next_callee) |
2976 | { | |
2977 | tree cdecl = e->callee->decl; | |
3d78e008 ML |
2978 | if (fndecl_built_in_p (cdecl, BUILT_IN_APPLY_ARGS) |
2979 | || fndecl_built_in_p (cdecl, BUILT_IN_VA_START)) | |
27d020cf JH |
2980 | break; |
2981 | } | |
87f94429 | 2982 | node->can_change_signature = !e; |
27d020cf JH |
2983 | } |
2984 | } | |
0bceb671 | 2985 | analyze_function_body (node, early); |
27d020cf JH |
2986 | pop_cfun (); |
2987 | } | |
27d020cf JH |
2988 | |
2989 | /* Inlining characteristics are maintained by the cgraph_mark_inline. */ | |
f658ad30 JH |
2990 | size_info->size = size_info->self_size; |
2991 | info->estimated_stack_size = size_info->estimated_self_stack_size; | |
27d020cf JH |
2992 | |
2993 | /* Code above should compute exactly the same result as | |
0bceb671 | 2994 | ipa_update_overall_fn_summary but because computation happens in |
27d020cf | 2995 | different order the roundoff errors result in slight changes. */ |
0bceb671 | 2996 | ipa_update_overall_fn_summary (node); |
959b8c82 | 2997 | /* In LTO mode we may have speculative edges set. */ |
f658ad30 | 2998 | gcc_assert (in_lto_p || size_info->size == size_info->self_size); |
27d020cf JH |
2999 | } |
3000 | ||
3001 | ||
3002 | /* Compute parameters of functions used by inliner using | |
3003 | current_function_decl. */ | |
3004 | ||
3005 | static unsigned int | |
0bceb671 | 3006 | compute_fn_summary_for_current (void) |
27d020cf | 3007 | { |
0bceb671 | 3008 | compute_fn_summary (cgraph_node::get (current_function_decl), true); |
27d020cf JH |
3009 | return 0; |
3010 | } | |
3011 | ||
27d020cf JH |
3012 | /* Estimate benefit devirtualizing indirect edge IE, provided KNOWN_VALS, |
3013 | KNOWN_CONTEXTS and KNOWN_AGGS. */ | |
3014 | ||
3015 | static bool | |
3016 | estimate_edge_devirt_benefit (struct cgraph_edge *ie, | |
3017 | int *size, int *time, | |
3018 | vec<tree> known_vals, | |
3019 | vec<ipa_polymorphic_call_context> known_contexts, | |
eb270950 | 3020 | vec<ipa_agg_value_set> known_aggs) |
27d020cf JH |
3021 | { |
3022 | tree target; | |
3023 | struct cgraph_node *callee; | |
99b1c316 | 3024 | class ipa_fn_summary *isummary; |
27d020cf JH |
3025 | enum availability avail; |
3026 | bool speculative; | |
3027 | ||
b0d55476 | 3028 | if (!known_vals.length () && !known_contexts.length ()) |
27d020cf JH |
3029 | return false; |
3030 | if (!opt_for_fn (ie->caller->decl, flag_indirect_inlining)) | |
3031 | return false; | |
3032 | ||
3033 | target = ipa_get_indirect_edge_target (ie, known_vals, known_contexts, | |
3034 | known_aggs, &speculative); | |
3035 | if (!target || speculative) | |
3036 | return false; | |
3037 | ||
3038 | /* Account for difference in cost between indirect and direct calls. */ | |
3039 | *size -= (eni_size_weights.indirect_call_cost - eni_size_weights.call_cost); | |
3040 | *time -= (eni_time_weights.indirect_call_cost - eni_time_weights.call_cost); | |
3041 | gcc_checking_assert (*time >= 0); | |
3042 | gcc_checking_assert (*size >= 0); | |
3043 | ||
3044 | callee = cgraph_node::get (target); | |
3045 | if (!callee || !callee->definition) | |
3046 | return false; | |
3047 | callee = callee->function_symbol (&avail); | |
3048 | if (avail < AVAIL_AVAILABLE) | |
3049 | return false; | |
56f62793 | 3050 | isummary = ipa_fn_summaries->get (callee); |
1d546c60 ML |
3051 | if (isummary == NULL) |
3052 | return false; | |
3053 | ||
27d020cf JH |
3054 | return isummary->inlinable; |
3055 | } | |
3056 | ||
3057 | /* Increase SIZE, MIN_SIZE (if non-NULL) and TIME for size and time needed to | |
3058 | handle edge E with probability PROB. | |
3059 | Set HINTS if edge may be devirtualized. | |
3060 | KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS describe context of the call | |
3061 | site. */ | |
3062 | ||
3063 | static inline void | |
3064 | estimate_edge_size_and_time (struct cgraph_edge *e, int *size, int *min_size, | |
3065 | sreal *time, | |
27d020cf JH |
3066 | vec<tree> known_vals, |
3067 | vec<ipa_polymorphic_call_context> known_contexts, | |
eb270950 | 3068 | vec<ipa_agg_value_set> known_aggs, |
0bceb671 | 3069 | ipa_hints *hints) |
27d020cf | 3070 | { |
99b1c316 | 3071 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3072 | int call_size = es->call_stmt_size; |
3073 | int call_time = es->call_stmt_time; | |
3074 | int cur_size; | |
98450d19 | 3075 | |
83263ef5 | 3076 | if (!e->callee && hints && e->maybe_hot_p () |
27d020cf | 3077 | && estimate_edge_devirt_benefit (e, &call_size, &call_time, |
83263ef5 | 3078 | known_vals, known_contexts, known_aggs)) |
27d020cf | 3079 | *hints |= INLINE_HINT_indirect_call; |
0bceb671 | 3080 | cur_size = call_size * ipa_fn_summary::size_scale; |
27d020cf JH |
3081 | *size += cur_size; |
3082 | if (min_size) | |
3083 | *min_size += cur_size; | |
98450d19 | 3084 | if (time) |
41f0e819 | 3085 | *time += ((sreal)call_time) * e->sreal_frequency (); |
27d020cf JH |
3086 | } |
3087 | ||
3088 | ||
27d020cf JH |
3089 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all |
3090 | calls in NODE. POSSIBLE_TRUTHS, KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS | |
070e3489 JH |
3091 | describe context of the call site. |
3092 | ||
3093 | Helper for estimate_calls_size_and_time which does the same but | |
3094 | (in most cases) faster. */ | |
27d020cf JH |
3095 | |
3096 | static void | |
070e3489 JH |
3097 | estimate_calls_size_and_time_1 (struct cgraph_node *node, int *size, |
3098 | int *min_size, sreal *time, | |
3099 | ipa_hints *hints, | |
3100 | clause_t possible_truths, | |
3101 | vec<tree> known_vals, | |
3102 | vec<ipa_polymorphic_call_context> known_contexts, | |
3103 | vec<ipa_agg_value_set> known_aggs) | |
27d020cf JH |
3104 | { |
3105 | struct cgraph_edge *e; | |
3106 | for (e = node->callees; e; e = e->next_callee) | |
3107 | { | |
7237f93e JH |
3108 | if (!e->inline_failed) |
3109 | { | |
3110 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
070e3489 JH |
3111 | estimate_calls_size_and_time_1 (e->callee, size, min_size, time, |
3112 | hints, | |
3113 | possible_truths, | |
3114 | known_vals, known_contexts, | |
3115 | known_aggs); | |
7237f93e JH |
3116 | continue; |
3117 | } | |
3118 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
27d020cf JH |
3119 | |
3120 | /* Do not care about zero sized builtins. */ | |
7237f93e | 3121 | if (!es->call_stmt_size) |
27d020cf JH |
3122 | { |
3123 | gcc_checking_assert (!es->call_stmt_time); | |
3124 | continue; | |
3125 | } | |
3126 | if (!es->predicate | |
3127 | || es->predicate->evaluate (possible_truths)) | |
3128 | { | |
7237f93e | 3129 | /* Predicates of calls shall not use NOT_CHANGED codes, |
956d615d | 3130 | so we do not need to compute probabilities. */ |
7237f93e JH |
3131 | estimate_edge_size_and_time (e, size, |
3132 | es->predicate ? NULL : min_size, | |
98450d19 | 3133 | time, |
7237f93e JH |
3134 | known_vals, known_contexts, |
3135 | known_aggs, hints); | |
27d020cf JH |
3136 | } |
3137 | } | |
3138 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3139 | { | |
7237f93e | 3140 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3141 | if (!es->predicate |
3142 | || es->predicate->evaluate (possible_truths)) | |
3143 | estimate_edge_size_and_time (e, size, | |
3144 | es->predicate ? NULL : min_size, | |
98450d19 | 3145 | time, |
27d020cf JH |
3146 | known_vals, known_contexts, known_aggs, |
3147 | hints); | |
3148 | } | |
3149 | } | |
3150 | ||
070e3489 JH |
3151 | /* Populate sum->call_size_time_table for edges from NODE. */ |
3152 | ||
3153 | static void | |
3154 | summarize_calls_size_and_time (struct cgraph_node *node, | |
3155 | ipa_fn_summary *sum) | |
3156 | { | |
3157 | struct cgraph_edge *e; | |
3158 | for (e = node->callees; e; e = e->next_callee) | |
3159 | { | |
3160 | if (!e->inline_failed) | |
3161 | { | |
3162 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
3163 | summarize_calls_size_and_time (e->callee, sum); | |
3164 | continue; | |
3165 | } | |
3166 | int size = 0; | |
3167 | sreal time = 0; | |
3168 | ||
3169 | estimate_edge_size_and_time (e, &size, NULL, &time, | |
3170 | vNULL, vNULL, vNULL, NULL); | |
3171 | ||
3172 | struct predicate pred = true; | |
3173 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
3174 | ||
3175 | if (es->predicate) | |
3176 | pred = *es->predicate; | |
3177 | sum->account_size_time (size, time, pred, pred, true); | |
3178 | } | |
3179 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3180 | { | |
3181 | int size = 0; | |
3182 | sreal time = 0; | |
3183 | ||
3184 | estimate_edge_size_and_time (e, &size, NULL, &time, | |
3185 | vNULL, vNULL, vNULL, NULL); | |
3186 | struct predicate pred = true; | |
3187 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
3188 | ||
3189 | if (es->predicate) | |
3190 | pred = *es->predicate; | |
3191 | sum->account_size_time (size, time, pred, pred, true); | |
3192 | } | |
3193 | } | |
3194 | ||
3195 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all | |
3196 | calls in NODE. POSSIBLE_TRUTHS, KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS | |
3197 | describe context of the call site. */ | |
3198 | ||
3199 | static void | |
3200 | estimate_calls_size_and_time (struct cgraph_node *node, int *size, | |
3201 | int *min_size, sreal *time, | |
3202 | ipa_hints *hints, | |
3203 | clause_t possible_truths, | |
3204 | vec<tree> known_vals, | |
3205 | vec<ipa_polymorphic_call_context> known_contexts, | |
3206 | vec<ipa_agg_value_set> known_aggs) | |
3207 | { | |
3208 | class ipa_fn_summary *sum = ipa_fn_summaries->get (node); | |
3209 | bool use_table = true; | |
3210 | ||
3211 | gcc_assert (node->callees || node->indirect_calls); | |
3212 | ||
3213 | /* During early inlining we do not calculate info for very | |
3214 | large functions and thus there is no need for producing | |
3215 | summaries. */ | |
3216 | if (!ipa_node_params_sum) | |
3217 | use_table = false; | |
3218 | /* Do not calculate summaries for simple wrappers; it is waste | |
3219 | of memory. */ | |
3220 | else if (node->callees && node->indirect_calls | |
3221 | && node->callees->inline_failed && !node->callees->next_callee) | |
3222 | use_table = false; | |
3223 | /* If there is an indirect edge that may be optimized, we need | |
3224 | to go the slow way. */ | |
3225 | else if ((known_vals.length () | |
3226 | || known_contexts.length () | |
3227 | || known_aggs.length ()) && hints) | |
3228 | { | |
3229 | class ipa_node_params *params_summary = IPA_NODE_REF (node); | |
3230 | unsigned int nargs = params_summary | |
3231 | ? ipa_get_param_count (params_summary) : 0; | |
3232 | ||
3233 | for (unsigned int i = 0; i < nargs && use_table; i++) | |
3234 | { | |
3235 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
3236 | && ((known_vals.length () > i && known_vals[i]) | |
3237 | || (known_aggs.length () > i | |
3238 | && known_aggs[i].items.length ()))) | |
3239 | use_table = false; | |
3240 | else if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
3241 | && (known_contexts.length () > i | |
3242 | && !known_contexts[i].useless_p ())) | |
3243 | use_table = false; | |
3244 | } | |
3245 | } | |
3246 | ||
3247 | /* Fast path is via the call size time table. */ | |
3248 | if (use_table) | |
3249 | { | |
3250 | /* Build summary if it is absent. */ | |
3251 | if (!sum->call_size_time_table) | |
3252 | { | |
3253 | predicate true_pred = true; | |
3254 | sum->account_size_time (0, 0, true_pred, true_pred, true); | |
3255 | summarize_calls_size_and_time (node, sum); | |
3256 | } | |
3257 | ||
3258 | int old_size = *size; | |
3259 | sreal old_time = time ? *time : 0; | |
3260 | ||
3261 | if (min_size) | |
3262 | *min_size += (*sum->call_size_time_table)[0].size; | |
3263 | ||
3264 | unsigned int i; | |
3265 | size_time_entry *e; | |
3266 | ||
3267 | /* Walk the table and account sizes and times. */ | |
3268 | for (i = 0; vec_safe_iterate (sum->call_size_time_table, i, &e); | |
3269 | i++) | |
3270 | if (e->exec_predicate.evaluate (possible_truths)) | |
3271 | { | |
3272 | *size += e->size; | |
3273 | if (time) | |
3274 | *time += e->time; | |
3275 | } | |
3276 | ||
3277 | /* Be careful and see if both methods agree. */ | |
3278 | if ((flag_checking || dump_file) | |
3279 | /* Do not try to sanity check when we know we lost some | |
3280 | precision. */ | |
3281 | && sum->call_size_time_table->length () | |
3282 | < ipa_fn_summary::max_size_time_table_size) | |
3283 | { | |
3284 | estimate_calls_size_and_time_1 (node, &old_size, NULL, &old_time, NULL, | |
3285 | possible_truths, known_vals, | |
3286 | known_contexts, known_aggs); | |
3287 | gcc_assert (*size == old_size); | |
3288 | if (time && (*time - old_time > 1 || *time - old_time < -1) | |
3289 | && dump_file) | |
f5b25e15 | 3290 | fprintf (dump_file, "Time mismatch in call summary %f!=%f\n", |
070e3489 JH |
3291 | old_time.to_double (), |
3292 | time->to_double ()); | |
3293 | } | |
3294 | } | |
3295 | /* Slow path by walking all edges. */ | |
3296 | else | |
3297 | estimate_calls_size_and_time_1 (node, size, min_size, time, hints, | |
3298 | possible_truths, known_vals, known_contexts, | |
3299 | known_aggs); | |
3300 | } | |
3301 | ||
1532500e | 3302 | /* Default constructor for ipa call context. |
956d615d | 3303 | Memory allocation of known_vals, known_contexts |
1532500e JH |
3304 | and known_aggs vectors is owned by the caller, but can |
3305 | be release by ipa_call_context::release. | |
3306 | ||
3307 | inline_param_summary is owned by the caller. */ | |
3308 | ipa_call_context::ipa_call_context (cgraph_node *node, | |
3309 | clause_t possible_truths, | |
3310 | clause_t nonspec_possible_truths, | |
3311 | vec<tree> known_vals, | |
3312 | vec<ipa_polymorphic_call_context> | |
3313 | known_contexts, | |
eb270950 | 3314 | vec<ipa_agg_value_set> known_aggs, |
1532500e JH |
3315 | vec<inline_param_summary> |
3316 | inline_param_summary) | |
3317 | : m_node (node), m_possible_truths (possible_truths), | |
3318 | m_nonspec_possible_truths (nonspec_possible_truths), | |
3319 | m_inline_param_summary (inline_param_summary), | |
3320 | m_known_vals (known_vals), | |
3321 | m_known_contexts (known_contexts), | |
3322 | m_known_aggs (known_aggs) | |
3323 | { | |
3324 | } | |
3325 | ||
40a777e8 JH |
3326 | /* Set THIS to be a duplicate of CTX. Copy all relevant info. */ |
3327 | ||
ac6f2e59 JH |
3328 | void |
3329 | ipa_call_context::duplicate_from (const ipa_call_context &ctx) | |
3330 | { | |
3331 | m_node = ctx.m_node; | |
3332 | m_possible_truths = ctx.m_possible_truths; | |
3333 | m_nonspec_possible_truths = ctx.m_nonspec_possible_truths; | |
40a777e8 | 3334 | class ipa_node_params *params_summary = IPA_NODE_REF (m_node); |
6cf67b62 JH |
3335 | unsigned int nargs = params_summary |
3336 | ? ipa_get_param_count (params_summary) : 0; | |
ac6f2e59 | 3337 | |
40a777e8 JH |
3338 | m_inline_param_summary = vNULL; |
3339 | /* Copy the info only if there is at least one useful entry. */ | |
ac6f2e59 | 3340 | if (ctx.m_inline_param_summary.exists ()) |
40a777e8 JH |
3341 | { |
3342 | unsigned int n = MIN (ctx.m_inline_param_summary.length (), nargs); | |
3343 | ||
3344 | for (unsigned int i = 0; i < n; i++) | |
3345 | if (ipa_is_param_used_by_ipa_predicates (params_summary, i) | |
3346 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3347 | { | |
3348 | m_inline_param_summary | |
3349 | = ctx.m_inline_param_summary.copy (); | |
3350 | break; | |
3351 | } | |
3352 | } | |
3353 | m_known_vals = vNULL; | |
ac6f2e59 | 3354 | if (ctx.m_known_vals.exists ()) |
40a777e8 JH |
3355 | { |
3356 | unsigned int n = MIN (ctx.m_known_vals.length (), nargs); | |
3357 | ||
3358 | for (unsigned int i = 0; i < n; i++) | |
3359 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
3360 | && ctx.m_known_vals[i]) | |
3361 | { | |
3362 | m_known_vals = ctx.m_known_vals.copy (); | |
3363 | break; | |
3364 | } | |
3365 | } | |
3366 | ||
3367 | m_known_contexts = vNULL; | |
ac6f2e59 | 3368 | if (ctx.m_known_contexts.exists ()) |
40a777e8 JH |
3369 | { |
3370 | unsigned int n = MIN (ctx.m_known_contexts.length (), nargs); | |
3371 | ||
3372 | for (unsigned int i = 0; i < n; i++) | |
3373 | if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
3374 | && !ctx.m_known_contexts[i].useless_p ()) | |
3375 | { | |
3376 | m_known_contexts = ctx.m_known_contexts.copy (); | |
3377 | break; | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | m_known_aggs = vNULL; | |
ac6f2e59 | 3382 | if (ctx.m_known_aggs.exists ()) |
40a777e8 JH |
3383 | { |
3384 | unsigned int n = MIN (ctx.m_known_aggs.length (), nargs); | |
3385 | ||
3386 | for (unsigned int i = 0; i < n; i++) | |
3387 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
eb270950 | 3388 | && !ctx.m_known_aggs[i].is_empty ()) |
40a777e8 | 3389 | { |
eb270950 | 3390 | m_known_aggs = ipa_copy_agg_values (ctx.m_known_aggs); |
40a777e8 JH |
3391 | break; |
3392 | } | |
3393 | } | |
ac6f2e59 JH |
3394 | } |
3395 | ||
3396 | /* Release memory used by known_vals/contexts/aggs vectors. | |
3397 | If ALL is true release also inline_param_summary. | |
956d615d | 3398 | This happens when context was previously duplicated to be stored |
ac6f2e59 | 3399 | into cache. */ |
1532500e JH |
3400 | |
3401 | void | |
ac6f2e59 | 3402 | ipa_call_context::release (bool all) |
1532500e | 3403 | { |
ac6f2e59 JH |
3404 | /* See if context is initialized at first place. */ |
3405 | if (!m_node) | |
3406 | return; | |
b0d55476 | 3407 | ipa_release_agg_values (m_known_aggs, all); |
ac6f2e59 | 3408 | if (all) |
b0d55476 JH |
3409 | { |
3410 | m_known_vals.release (); | |
3411 | m_known_contexts.release (); | |
3412 | m_inline_param_summary.release (); | |
3413 | } | |
ac6f2e59 JH |
3414 | } |
3415 | ||
3416 | /* Return true if CTX describes the same call context as THIS. */ | |
3417 | ||
3418 | bool | |
3419 | ipa_call_context::equal_to (const ipa_call_context &ctx) | |
3420 | { | |
3421 | if (m_node != ctx.m_node | |
3422 | || m_possible_truths != ctx.m_possible_truths | |
3423 | || m_nonspec_possible_truths != ctx.m_nonspec_possible_truths) | |
3424 | return false; | |
40a777e8 JH |
3425 | |
3426 | class ipa_node_params *params_summary = IPA_NODE_REF (m_node); | |
6cf67b62 JH |
3427 | unsigned int nargs = params_summary |
3428 | ? ipa_get_param_count (params_summary) : 0; | |
40a777e8 JH |
3429 | |
3430 | if (m_inline_param_summary.exists () || ctx.m_inline_param_summary.exists ()) | |
ac6f2e59 | 3431 | { |
40a777e8 JH |
3432 | for (unsigned int i = 0; i < nargs; i++) |
3433 | { | |
3434 | if (!ipa_is_param_used_by_ipa_predicates (params_summary, i)) | |
3435 | continue; | |
3436 | if (i >= m_inline_param_summary.length () | |
3437 | || m_inline_param_summary[i].useless_p ()) | |
3438 | { | |
3439 | if (i < ctx.m_inline_param_summary.length () | |
3440 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3441 | return false; | |
3442 | continue; | |
3443 | } | |
3444 | if (i >= ctx.m_inline_param_summary.length () | |
3445 | || ctx.m_inline_param_summary[i].useless_p ()) | |
3446 | { | |
3447 | if (i < m_inline_param_summary.length () | |
3448 | && !m_inline_param_summary[i].useless_p ()) | |
3449 | return false; | |
3450 | continue; | |
3451 | } | |
3452 | if (!m_inline_param_summary[i].equal_to | |
3453 | (ctx.m_inline_param_summary[i])) | |
3454 | return false; | |
3455 | } | |
ac6f2e59 | 3456 | } |
40a777e8 | 3457 | if (m_known_vals.exists () || ctx.m_known_vals.exists ()) |
ac6f2e59 | 3458 | { |
40a777e8 | 3459 | for (unsigned int i = 0; i < nargs; i++) |
ac6f2e59 | 3460 | { |
40a777e8 JH |
3461 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) |
3462 | continue; | |
3463 | if (i >= m_known_vals.length () || !m_known_vals[i]) | |
3464 | { | |
3465 | if (i < ctx.m_known_vals.length () && ctx.m_known_vals[i]) | |
3466 | return false; | |
3467 | continue; | |
3468 | } | |
3469 | if (i >= ctx.m_known_vals.length () || !ctx.m_known_vals[i]) | |
3470 | { | |
3471 | if (i < m_known_vals.length () && m_known_vals[i]) | |
3472 | return false; | |
3473 | continue; | |
3474 | } | |
3475 | if (m_known_vals[i] != ctx.m_known_vals[i]) | |
ac6f2e59 JH |
3476 | return false; |
3477 | } | |
3478 | } | |
40a777e8 | 3479 | if (m_known_contexts.exists () || ctx.m_known_contexts.exists ()) |
ac6f2e59 | 3480 | { |
40a777e8 JH |
3481 | for (unsigned int i = 0; i < nargs; i++) |
3482 | { | |
3483 | if (!ipa_is_param_used_by_polymorphic_call (params_summary, i)) | |
3484 | continue; | |
3485 | if (i >= m_known_contexts.length () | |
3486 | || m_known_contexts[i].useless_p ()) | |
3487 | { | |
3488 | if (i < ctx.m_known_contexts.length () | |
3489 | && !ctx.m_known_contexts[i].useless_p ()) | |
3490 | return false; | |
3491 | continue; | |
3492 | } | |
3493 | if (i >= ctx.m_known_contexts.length () | |
3494 | || ctx.m_known_contexts[i].useless_p ()) | |
3495 | { | |
3496 | if (i < m_known_contexts.length () | |
3497 | && !m_known_contexts[i].useless_p ()) | |
3498 | return false; | |
3499 | continue; | |
3500 | } | |
3501 | if (!m_known_contexts[i].equal_to | |
3502 | (ctx.m_known_contexts[i])) | |
3503 | return false; | |
3504 | } | |
ac6f2e59 | 3505 | } |
40a777e8 | 3506 | if (m_known_aggs.exists () || ctx.m_known_aggs.exists ()) |
ac6f2e59 | 3507 | { |
40a777e8 JH |
3508 | for (unsigned int i = 0; i < nargs; i++) |
3509 | { | |
3510 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) | |
3511 | continue; | |
eb270950 | 3512 | if (i >= m_known_aggs.length () || m_known_aggs[i].is_empty ()) |
40a777e8 | 3513 | { |
eb270950 FX |
3514 | if (i < ctx.m_known_aggs.length () |
3515 | && !ctx.m_known_aggs[i].is_empty ()) | |
40a777e8 JH |
3516 | return false; |
3517 | continue; | |
3518 | } | |
eb270950 FX |
3519 | if (i >= ctx.m_known_aggs.length () |
3520 | || ctx.m_known_aggs[i].is_empty ()) | |
40a777e8 | 3521 | { |
eb270950 FX |
3522 | if (i < m_known_aggs.length () |
3523 | && !m_known_aggs[i].is_empty ()) | |
40a777e8 JH |
3524 | return false; |
3525 | continue; | |
3526 | } | |
eb270950 | 3527 | if (!m_known_aggs[i].equal_to (ctx.m_known_aggs[i])) |
40a777e8 JH |
3528 | return false; |
3529 | } | |
ac6f2e59 JH |
3530 | } |
3531 | return true; | |
1532500e | 3532 | } |
27d020cf | 3533 | |
1532500e | 3534 | /* Estimate size and time needed to execute call in the given context. |
956d615d | 3535 | Additionally determine hints determined by the context. Finally compute |
27d020cf JH |
3536 | minimal size needed for the call that is independent on the call context and |
3537 | can be used for fast estimates. Return the values in RET_SIZE, | |
3538 | RET_MIN_SIZE, RET_TIME and RET_HINTS. */ | |
3539 | ||
3540 | void | |
1532500e JH |
3541 | ipa_call_context::estimate_size_and_time (int *ret_size, |
3542 | int *ret_min_size, | |
3543 | sreal *ret_time, | |
3544 | sreal *ret_nonspecialized_time, | |
3545 | ipa_hints *ret_hints) | |
27d020cf | 3546 | { |
7237f93e | 3547 | class ipa_fn_summary *info = ipa_fn_summaries->get (m_node); |
27d020cf JH |
3548 | size_time_entry *e; |
3549 | int size = 0; | |
3550 | sreal time = 0; | |
3551 | int min_size = 0; | |
0bceb671 | 3552 | ipa_hints hints = 0; |
27d020cf JH |
3553 | int i; |
3554 | ||
3555 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3556 | { | |
3557 | bool found = false; | |
d597b944 ML |
3558 | fprintf (dump_file, " Estimating body: %s\n" |
3559 | " Known to be false: ", m_node->dump_name ()); | |
27d020cf JH |
3560 | |
3561 | for (i = predicate::not_inlined_condition; | |
3562 | i < (predicate::first_dynamic_condition | |
3563 | + (int) vec_safe_length (info->conds)); i++) | |
1532500e | 3564 | if (!(m_possible_truths & (1 << i))) |
27d020cf JH |
3565 | { |
3566 | if (found) | |
3567 | fprintf (dump_file, ", "); | |
3568 | found = true; | |
3569 | dump_condition (dump_file, info->conds, i); | |
3570 | } | |
3571 | } | |
3572 | ||
070e3489 JH |
3573 | if (m_node->callees || m_node->indirect_calls) |
3574 | estimate_calls_size_and_time (m_node, &size, &min_size, | |
3575 | ret_time ? &time : NULL, | |
3576 | ret_hints ? &hints : NULL, m_possible_truths, | |
3577 | m_known_vals, m_known_contexts, m_known_aggs); | |
83263ef5 | 3578 | |
27d020cf JH |
3579 | sreal nonspecialized_time = time; |
3580 | ||
e3bd08dd | 3581 | min_size += (*info->size_time_table)[0].size; |
27d020cf JH |
3582 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) |
3583 | { | |
1532500e | 3584 | bool exec = e->exec_predicate.evaluate (m_nonspec_possible_truths); |
3494e738 JH |
3585 | |
3586 | /* Because predicates are conservative, it can happen that nonconst is 1 | |
3587 | but exec is 0. */ | |
27d020cf JH |
3588 | if (exec) |
3589 | { | |
1532500e | 3590 | bool nonconst = e->nonconst_predicate.evaluate (m_possible_truths); |
3494e738 | 3591 | |
27d020cf JH |
3592 | gcc_checking_assert (e->time >= 0); |
3593 | gcc_checking_assert (time >= 0); | |
3594 | ||
3595 | /* We compute specialized size only because size of nonspecialized | |
3596 | copy is context independent. | |
3597 | ||
3598 | The difference between nonspecialized execution and specialized is | |
3599 | that nonspecialized is not going to have optimized out computations | |
3600 | known to be constant in a specialized setting. */ | |
3601 | if (nonconst) | |
3602 | size += e->size; | |
83263ef5 JH |
3603 | if (!ret_time) |
3604 | continue; | |
27d020cf JH |
3605 | nonspecialized_time += e->time; |
3606 | if (!nonconst) | |
3607 | ; | |
1532500e | 3608 | else if (!m_inline_param_summary.exists ()) |
27d020cf JH |
3609 | { |
3610 | if (nonconst) | |
3611 | time += e->time; | |
3612 | } | |
3613 | else | |
3614 | { | |
3615 | int prob = e->nonconst_predicate.probability | |
1532500e JH |
3616 | (info->conds, m_possible_truths, |
3617 | m_inline_param_summary); | |
27d020cf JH |
3618 | gcc_checking_assert (prob >= 0); |
3619 | gcc_checking_assert (prob <= REG_BR_PROB_BASE); | |
fd4656a2 JH |
3620 | if (prob == REG_BR_PROB_BASE) |
3621 | time += e->time; | |
3622 | else | |
3623 | time += e->time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
3624 | } |
3625 | gcc_checking_assert (time >= 0); | |
3626 | } | |
3627 | } | |
3628 | gcc_checking_assert ((*info->size_time_table)[0].exec_predicate == true); | |
3629 | gcc_checking_assert ((*info->size_time_table)[0].nonconst_predicate == true); | |
e3bd08dd | 3630 | gcc_checking_assert (min_size >= 0); |
27d020cf JH |
3631 | gcc_checking_assert (size >= 0); |
3632 | gcc_checking_assert (time >= 0); | |
3633 | /* nonspecialized_time should be always bigger than specialized time. | |
3634 | Roundoff issues however may get into the way. */ | |
59d27026 | 3635 | gcc_checking_assert ((nonspecialized_time - time * 99 / 100) >= -1); |
27d020cf JH |
3636 | |
3637 | /* Roundoff issues may make specialized time bigger than nonspecialized | |
956d615d | 3638 | time. We do not really want that to happen because some heuristics |
27d020cf JH |
3639 | may get confused by seeing negative speedups. */ |
3640 | if (time > nonspecialized_time) | |
3641 | time = nonspecialized_time; | |
3642 | ||
83263ef5 JH |
3643 | if (ret_hints) |
3644 | { | |
3645 | if (info->loop_iterations | |
3646 | && !info->loop_iterations->evaluate (m_possible_truths)) | |
3647 | hints |= INLINE_HINT_loop_iterations; | |
3648 | if (info->loop_stride | |
3649 | && !info->loop_stride->evaluate (m_possible_truths)) | |
3650 | hints |= INLINE_HINT_loop_stride; | |
3651 | if (info->scc_no) | |
3652 | hints |= INLINE_HINT_in_scc; | |
3653 | if (DECL_DECLARED_INLINE_P (m_node->decl)) | |
3654 | hints |= INLINE_HINT_declared_inline; | |
3655 | } | |
27d020cf | 3656 | |
0bceb671 JH |
3657 | size = RDIV (size, ipa_fn_summary::size_scale); |
3658 | min_size = RDIV (min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
3659 | |
3660 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3661 | fprintf (dump_file, "\n size:%i time:%f nonspec time:%f\n", (int) size, | |
3662 | time.to_double (), nonspecialized_time.to_double ()); | |
3663 | if (ret_time) | |
3664 | *ret_time = time; | |
3665 | if (ret_nonspecialized_time) | |
3666 | *ret_nonspecialized_time = nonspecialized_time; | |
3667 | if (ret_size) | |
3668 | *ret_size = size; | |
3669 | if (ret_min_size) | |
3670 | *ret_min_size = min_size; | |
3671 | if (ret_hints) | |
3672 | *ret_hints = hints; | |
3673 | return; | |
3674 | } | |
3675 | ||
3676 | ||
3677 | /* Estimate size and time needed to execute callee of EDGE assuming that | |
3678 | parameters known to be constant at caller of EDGE are propagated. | |
3679 | KNOWN_VALS and KNOWN_CONTEXTS are vectors of assumed known constant values | |
3680 | and types for parameters. */ | |
3681 | ||
3682 | void | |
3683 | estimate_ipcp_clone_size_and_time (struct cgraph_node *node, | |
3684 | vec<tree> known_vals, | |
3685 | vec<ipa_polymorphic_call_context> | |
3686 | known_contexts, | |
eb270950 | 3687 | vec<ipa_agg_value_set> known_aggs, |
27d020cf JH |
3688 | int *ret_size, sreal *ret_time, |
3689 | sreal *ret_nonspec_time, | |
0bceb671 | 3690 | ipa_hints *hints) |
27d020cf JH |
3691 | { |
3692 | clause_t clause, nonspec_clause; | |
3693 | ||
68718e8e | 3694 | /* TODO: Also pass known value ranges. */ |
82c4b78d | 3695 | evaluate_conditions_for_known_args (node, false, known_vals, vNULL, |
68718e8e | 3696 | known_aggs, &clause, &nonspec_clause); |
1532500e JH |
3697 | ipa_call_context ctx (node, clause, nonspec_clause, |
3698 | known_vals, known_contexts, | |
3699 | known_aggs, vNULL); | |
3700 | ctx.estimate_size_and_time (ret_size, NULL, ret_time, | |
3701 | ret_nonspec_time, hints); | |
27d020cf JH |
3702 | } |
3703 | ||
f658ad30 JH |
3704 | /* Return stack frame offset where frame of NODE is supposed to start inside |
3705 | of the function it is inlined to. | |
3706 | Return 0 for functions that are not inlined. */ | |
3707 | ||
3708 | HOST_WIDE_INT | |
3709 | ipa_get_stack_frame_offset (struct cgraph_node *node) | |
3710 | { | |
3711 | HOST_WIDE_INT offset = 0; | |
a62bfab5 | 3712 | if (!node->inlined_to) |
f658ad30 JH |
3713 | return 0; |
3714 | node = node->callers->caller; | |
3715 | while (true) | |
3716 | { | |
3717 | offset += ipa_size_summaries->get (node)->estimated_self_stack_size; | |
a62bfab5 | 3718 | if (!node->inlined_to) |
f658ad30 JH |
3719 | return offset; |
3720 | node = node->callers->caller; | |
3721 | } | |
3722 | } | |
3723 | ||
27d020cf JH |
3724 | |
3725 | /* Update summary information of inline clones after inlining. | |
3726 | Compute peak stack usage. */ | |
3727 | ||
3728 | static void | |
3729 | inline_update_callee_summaries (struct cgraph_node *node, int depth) | |
3730 | { | |
3731 | struct cgraph_edge *e; | |
f658ad30 | 3732 | |
27d020cf JH |
3733 | ipa_propagate_frequency (node); |
3734 | for (e = node->callees; e; e = e->next_callee) | |
3735 | { | |
3736 | if (!e->inline_failed) | |
3737 | inline_update_callee_summaries (e->callee, depth); | |
7237f93e JH |
3738 | else |
3739 | ipa_call_summaries->get (e)->loop_depth += depth; | |
27d020cf JH |
3740 | } |
3741 | for (e = node->indirect_calls; e; e = e->next_callee) | |
56f62793 | 3742 | ipa_call_summaries->get (e)->loop_depth += depth; |
27d020cf JH |
3743 | } |
3744 | ||
3745 | /* Update change_prob of EDGE after INLINED_EDGE has been inlined. | |
6cf67b62 | 3746 | When function A is inlined in B and A calls C with parameter that |
956d615d | 3747 | changes with probability PROB1 and C is known to be passthrough |
27d020cf JH |
3748 | of argument if B that change with probability PROB2, the probability |
3749 | of change is now PROB1*PROB2. */ | |
3750 | ||
3751 | static void | |
3752 | remap_edge_change_prob (struct cgraph_edge *inlined_edge, | |
3753 | struct cgraph_edge *edge) | |
3754 | { | |
3755 | if (ipa_node_params_sum) | |
3756 | { | |
3757 | int i; | |
99b1c316 | 3758 | class ipa_edge_args *args = IPA_EDGE_REF (edge); |
a33c028e JH |
3759 | if (!args) |
3760 | return; | |
99b1c316 MS |
3761 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
3762 | class ipa_call_summary *inlined_es | |
56f62793 | 3763 | = ipa_call_summaries->get (inlined_edge); |
27d020cf | 3764 | |
8c02e054 JH |
3765 | if (es->param.length () == 0) |
3766 | return; | |
3767 | ||
27d020cf JH |
3768 | for (i = 0; i < ipa_get_cs_argument_count (args); i++) |
3769 | { | |
3770 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
3771 | if (jfunc->type == IPA_JF_PASS_THROUGH | |
3772 | || jfunc->type == IPA_JF_ANCESTOR) | |
3773 | { | |
3774 | int id = jfunc->type == IPA_JF_PASS_THROUGH | |
3775 | ? ipa_get_jf_pass_through_formal_id (jfunc) | |
3776 | : ipa_get_jf_ancestor_formal_id (jfunc); | |
3777 | if (id < (int) inlined_es->param.length ()) | |
3778 | { | |
3779 | int prob1 = es->param[i].change_prob; | |
3780 | int prob2 = inlined_es->param[id].change_prob; | |
3781 | int prob = combine_probabilities (prob1, prob2); | |
3782 | ||
3783 | if (prob1 && prob2 && !prob) | |
3784 | prob = 1; | |
3785 | ||
3786 | es->param[i].change_prob = prob; | |
3787 | } | |
3788 | } | |
3789 | } | |
3790 | } | |
3791 | } | |
3792 | ||
3793 | /* Update edge summaries of NODE after INLINED_EDGE has been inlined. | |
3794 | ||
3795 | Remap predicates of callees of NODE. Rest of arguments match | |
3796 | remap_predicate. | |
3797 | ||
3798 | Also update change probabilities. */ | |
3799 | ||
3800 | static void | |
3801 | remap_edge_summaries (struct cgraph_edge *inlined_edge, | |
3802 | struct cgraph_node *node, | |
99b1c316 | 3803 | class ipa_fn_summary *info, |
40a777e8 | 3804 | class ipa_node_params *params_summary, |
99b1c316 | 3805 | class ipa_fn_summary *callee_info, |
27d020cf JH |
3806 | vec<int> operand_map, |
3807 | vec<int> offset_map, | |
3808 | clause_t possible_truths, | |
3809 | predicate *toplev_predicate) | |
3810 | { | |
3811 | struct cgraph_edge *e, *next; | |
3812 | for (e = node->callees; e; e = next) | |
3813 | { | |
27d020cf JH |
3814 | predicate p; |
3815 | next = e->next_callee; | |
3816 | ||
3817 | if (e->inline_failed) | |
3818 | { | |
6cf67b62 | 3819 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3820 | remap_edge_change_prob (inlined_edge, e); |
3821 | ||
3822 | if (es->predicate) | |
3823 | { | |
3824 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
3825 | (info, params_summary, |
3826 | callee_info, operand_map, | |
27d020cf JH |
3827 | offset_map, possible_truths, |
3828 | *toplev_predicate); | |
3829 | edge_set_predicate (e, &p); | |
3830 | } | |
3831 | else | |
3832 | edge_set_predicate (e, toplev_predicate); | |
3833 | } | |
3834 | else | |
40a777e8 JH |
3835 | remap_edge_summaries (inlined_edge, e->callee, info, |
3836 | params_summary, callee_info, | |
27d020cf JH |
3837 | operand_map, offset_map, possible_truths, |
3838 | toplev_predicate); | |
3839 | } | |
3840 | for (e = node->indirect_calls; e; e = next) | |
3841 | { | |
99b1c316 | 3842 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3843 | predicate p; |
3844 | next = e->next_callee; | |
3845 | ||
3846 | remap_edge_change_prob (inlined_edge, e); | |
3847 | if (es->predicate) | |
3848 | { | |
3849 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
3850 | (info, params_summary, |
3851 | callee_info, operand_map, offset_map, | |
27d020cf JH |
3852 | possible_truths, *toplev_predicate); |
3853 | edge_set_predicate (e, &p); | |
3854 | } | |
3855 | else | |
3856 | edge_set_predicate (e, toplev_predicate); | |
3857 | } | |
3858 | } | |
3859 | ||
3860 | /* Same as remap_predicate, but set result into hint *HINT. */ | |
3861 | ||
3862 | static void | |
99b1c316 | 3863 | remap_hint_predicate (class ipa_fn_summary *info, |
40a777e8 | 3864 | class ipa_node_params *params_summary, |
99b1c316 | 3865 | class ipa_fn_summary *callee_info, |
27d020cf JH |
3866 | predicate **hint, |
3867 | vec<int> operand_map, | |
3868 | vec<int> offset_map, | |
3869 | clause_t possible_truths, | |
3870 | predicate *toplev_predicate) | |
3871 | { | |
3872 | predicate p; | |
3873 | ||
3874 | if (!*hint) | |
3875 | return; | |
3876 | p = (*hint)->remap_after_inlining | |
40a777e8 | 3877 | (info, params_summary, callee_info, |
27d020cf JH |
3878 | operand_map, offset_map, |
3879 | possible_truths, *toplev_predicate); | |
3880 | if (p != false && p != true) | |
3881 | { | |
3882 | if (!*hint) | |
3883 | set_hint_predicate (hint, p); | |
3884 | else | |
3885 | **hint &= p; | |
3886 | } | |
3887 | } | |
3888 | ||
3889 | /* We inlined EDGE. Update summary of the function we inlined into. */ | |
3890 | ||
3891 | void | |
0bceb671 | 3892 | ipa_merge_fn_summary_after_inlining (struct cgraph_edge *edge) |
27d020cf | 3893 | { |
56f62793 | 3894 | ipa_fn_summary *callee_info = ipa_fn_summaries->get (edge->callee); |
a62bfab5 ML |
3895 | struct cgraph_node *to = (edge->caller->inlined_to |
3896 | ? edge->caller->inlined_to : edge->caller); | |
99b1c316 | 3897 | class ipa_fn_summary *info = ipa_fn_summaries->get (to); |
27d020cf JH |
3898 | clause_t clause = 0; /* not_inline is known to be false. */ |
3899 | size_time_entry *e; | |
f658ad30 JH |
3900 | auto_vec<int, 8> operand_map; |
3901 | auto_vec<int, 8> offset_map; | |
27d020cf JH |
3902 | int i; |
3903 | predicate toplev_predicate; | |
99b1c316 | 3904 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
40a777e8 JH |
3905 | class ipa_node_params *params_summary = (ipa_node_params_sum |
3906 | ? IPA_NODE_REF (to) : NULL); | |
27d020cf JH |
3907 | |
3908 | if (es->predicate) | |
3909 | toplev_predicate = *es->predicate; | |
3910 | else | |
3911 | toplev_predicate = true; | |
3912 | ||
3913 | info->fp_expressions |= callee_info->fp_expressions; | |
3914 | ||
3915 | if (callee_info->conds) | |
b0d55476 JH |
3916 | { |
3917 | auto_vec<tree, 32> known_vals; | |
3918 | auto_vec<ipa_agg_value_set, 32> known_aggs; | |
3919 | evaluate_properties_for_edge (edge, true, &clause, NULL, | |
3920 | &known_vals, NULL, &known_aggs); | |
3921 | } | |
27d020cf JH |
3922 | if (ipa_node_params_sum && callee_info->conds) |
3923 | { | |
99b1c316 | 3924 | class ipa_edge_args *args = IPA_EDGE_REF (edge); |
5a0236f8 | 3925 | int count = args ? ipa_get_cs_argument_count (args) : 0; |
27d020cf JH |
3926 | int i; |
3927 | ||
3928 | if (count) | |
3929 | { | |
cb3874dc ML |
3930 | operand_map.safe_grow_cleared (count, true); |
3931 | offset_map.safe_grow_cleared (count, true); | |
27d020cf JH |
3932 | } |
3933 | for (i = 0; i < count; i++) | |
3934 | { | |
3935 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
3936 | int map = -1; | |
3937 | ||
3938 | /* TODO: handle non-NOPs when merging. */ | |
3939 | if (jfunc->type == IPA_JF_PASS_THROUGH) | |
3940 | { | |
3941 | if (ipa_get_jf_pass_through_operation (jfunc) == NOP_EXPR) | |
3942 | map = ipa_get_jf_pass_through_formal_id (jfunc); | |
3943 | if (!ipa_get_jf_pass_through_agg_preserved (jfunc)) | |
3944 | offset_map[i] = -1; | |
3945 | } | |
3946 | else if (jfunc->type == IPA_JF_ANCESTOR) | |
3947 | { | |
3948 | HOST_WIDE_INT offset = ipa_get_jf_ancestor_offset (jfunc); | |
3949 | if (offset >= 0 && offset < INT_MAX) | |
3950 | { | |
3951 | map = ipa_get_jf_ancestor_formal_id (jfunc); | |
3952 | if (!ipa_get_jf_ancestor_agg_preserved (jfunc)) | |
3953 | offset = -1; | |
3954 | offset_map[i] = offset; | |
3955 | } | |
3956 | } | |
3957 | operand_map[i] = map; | |
40a777e8 | 3958 | gcc_assert (map < ipa_get_param_count (params_summary)); |
27d020cf JH |
3959 | } |
3960 | } | |
83263ef5 | 3961 | sreal freq = edge->sreal_frequency (); |
27d020cf JH |
3962 | for (i = 0; vec_safe_iterate (callee_info->size_time_table, i, &e); i++) |
3963 | { | |
3964 | predicate p; | |
3965 | p = e->exec_predicate.remap_after_inlining | |
40a777e8 JH |
3966 | (info, params_summary, |
3967 | callee_info, operand_map, | |
27d020cf JH |
3968 | offset_map, clause, |
3969 | toplev_predicate); | |
3970 | predicate nonconstp; | |
3971 | nonconstp = e->nonconst_predicate.remap_after_inlining | |
40a777e8 JH |
3972 | (info, params_summary, |
3973 | callee_info, operand_map, | |
27d020cf JH |
3974 | offset_map, clause, |
3975 | toplev_predicate); | |
3976 | if (p != false && nonconstp != false) | |
3977 | { | |
83263ef5 | 3978 | sreal add_time = ((sreal)e->time * freq); |
27d020cf JH |
3979 | int prob = e->nonconst_predicate.probability (callee_info->conds, |
3980 | clause, es->param); | |
fd4656a2 JH |
3981 | if (prob != REG_BR_PROB_BASE) |
3982 | add_time = add_time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
3983 | if (prob != REG_BR_PROB_BASE |
3984 | && dump_file && (dump_flags & TDF_DETAILS)) | |
3985 | { | |
3986 | fprintf (dump_file, "\t\tScaling time by probability:%f\n", | |
3987 | (double) prob / REG_BR_PROB_BASE); | |
3988 | } | |
3989 | info->account_size_time (e->size, add_time, p, nonconstp); | |
3990 | } | |
3991 | } | |
40a777e8 JH |
3992 | remap_edge_summaries (edge, edge->callee, info, params_summary, |
3993 | callee_info, operand_map, | |
27d020cf | 3994 | offset_map, clause, &toplev_predicate); |
40a777e8 | 3995 | remap_hint_predicate (info, params_summary, callee_info, |
27d020cf JH |
3996 | &callee_info->loop_iterations, |
3997 | operand_map, offset_map, clause, &toplev_predicate); | |
40a777e8 | 3998 | remap_hint_predicate (info, params_summary, callee_info, |
27d020cf JH |
3999 | &callee_info->loop_stride, |
4000 | operand_map, offset_map, clause, &toplev_predicate); | |
27d020cf | 4001 | |
f658ad30 JH |
4002 | HOST_WIDE_INT stack_frame_offset = ipa_get_stack_frame_offset (edge->callee); |
4003 | HOST_WIDE_INT peak = stack_frame_offset + callee_info->estimated_stack_size; | |
27d020cf | 4004 | |
f658ad30 JH |
4005 | if (info->estimated_stack_size < peak) |
4006 | info->estimated_stack_size = peak; | |
4007 | ||
4008 | inline_update_callee_summaries (edge->callee, es->loop_depth); | |
d2bcf46c JH |
4009 | if (info->call_size_time_table) |
4010 | { | |
4011 | int edge_size = 0; | |
4012 | sreal edge_time = 0; | |
4013 | ||
4014 | estimate_edge_size_and_time (edge, &edge_size, NULL, &edge_time, vNULL, | |
4015 | vNULL, vNULL, 0); | |
4016 | /* Unaccount size and time of the optimized out call. */ | |
4017 | info->account_size_time (-edge_size, -edge_time, | |
4018 | es->predicate ? *es->predicate : true, | |
4019 | es->predicate ? *es->predicate : true, | |
4020 | true); | |
4021 | /* Account new calls. */ | |
4022 | summarize_calls_size_and_time (edge->callee, info); | |
4023 | } | |
f658ad30 JH |
4024 | |
4025 | /* Free summaries that are not maintained for inline clones/edges. */ | |
4026 | ipa_call_summaries->remove (edge); | |
4027 | ipa_fn_summaries->remove (edge->callee); | |
7237f93e | 4028 | ipa_remove_from_growth_caches (edge); |
27d020cf JH |
4029 | } |
4030 | ||
f658ad30 | 4031 | /* For performance reasons ipa_merge_fn_summary_after_inlining is not updating |
d2bcf46c JH |
4032 | overall size and time. Recompute it. |
4033 | If RESET is true also recompute call_time_size_table. */ | |
27d020cf JH |
4034 | |
4035 | void | |
d2bcf46c | 4036 | ipa_update_overall_fn_summary (struct cgraph_node *node, bool reset) |
27d020cf | 4037 | { |
7237f93e JH |
4038 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
4039 | class ipa_size_summary *size_info = ipa_size_summaries->get (node); | |
27d020cf JH |
4040 | size_time_entry *e; |
4041 | int i; | |
4042 | ||
f658ad30 | 4043 | size_info->size = 0; |
27d020cf JH |
4044 | info->time = 0; |
4045 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) | |
4046 | { | |
f658ad30 | 4047 | size_info->size += e->size; |
27d020cf JH |
4048 | info->time += e->time; |
4049 | } | |
e3bd08dd | 4050 | info->min_size = (*info->size_time_table)[0].size; |
d2bcf46c JH |
4051 | if (reset) |
4052 | vec_free (info->call_size_time_table); | |
070e3489 JH |
4053 | if (node->callees || node->indirect_calls) |
4054 | estimate_calls_size_and_time (node, &size_info->size, &info->min_size, | |
4055 | &info->time, NULL, | |
4056 | ~(clause_t) (1 << predicate::false_condition), | |
4057 | vNULL, vNULL, vNULL); | |
e3bd08dd JH |
4058 | size_info->size = RDIV (size_info->size, ipa_fn_summary::size_scale); |
4059 | info->min_size = RDIV (info->min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
4060 | } |
4061 | ||
4062 | ||
4063 | /* This function performs intraprocedural analysis in NODE that is required to | |
4064 | inline indirect calls. */ | |
4065 | ||
4066 | static void | |
4067 | inline_indirect_intraprocedural_analysis (struct cgraph_node *node) | |
4068 | { | |
4069 | ipa_analyze_node (node); | |
4070 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
4071 | { | |
4072 | ipa_print_node_params (dump_file, node); | |
4073 | ipa_print_node_jump_functions (dump_file, node); | |
4074 | } | |
4075 | } | |
4076 | ||
4077 | ||
4078 | /* Note function body size. */ | |
4079 | ||
4080 | void | |
4081 | inline_analyze_function (struct cgraph_node *node) | |
4082 | { | |
4083 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
4084 | ||
4085 | if (dump_file) | |
d597b944 | 4086 | fprintf (dump_file, "\nAnalyzing function: %s\n", node->dump_name ()); |
27d020cf JH |
4087 | if (opt_for_fn (node->decl, optimize) && !node->thunk.thunk_p) |
4088 | inline_indirect_intraprocedural_analysis (node); | |
0bceb671 | 4089 | compute_fn_summary (node, false); |
27d020cf JH |
4090 | if (!optimize) |
4091 | { | |
4092 | struct cgraph_edge *e; | |
4093 | for (e = node->callees; e; e = e->next_callee) | |
4094 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4095 | for (e = node->indirect_calls; e; e = e->next_callee) | |
4096 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4097 | } | |
4098 | ||
4099 | pop_cfun (); | |
4100 | } | |
4101 | ||
4102 | ||
4103 | /* Called when new function is inserted to callgraph late. */ | |
4104 | ||
4105 | void | |
0bceb671 | 4106 | ipa_fn_summary_t::insert (struct cgraph_node *node, ipa_fn_summary *) |
27d020cf JH |
4107 | { |
4108 | inline_analyze_function (node); | |
4109 | } | |
4110 | ||
4111 | /* Note function body size. */ | |
4112 | ||
d2db2e6b JH |
4113 | static void |
4114 | ipa_fn_summary_generate (void) | |
27d020cf JH |
4115 | { |
4116 | struct cgraph_node *node; | |
4117 | ||
4118 | FOR_EACH_DEFINED_FUNCTION (node) | |
4119 | if (DECL_STRUCT_FUNCTION (node->decl)) | |
87f94429 | 4120 | node->versionable = tree_versionable_function_p (node->decl); |
27d020cf | 4121 | |
0bceb671 | 4122 | ipa_fn_summary_alloc (); |
27d020cf | 4123 | |
0bceb671 | 4124 | ipa_fn_summaries->enable_insertion_hook (); |
27d020cf JH |
4125 | |
4126 | ipa_register_cgraph_hooks (); | |
27d020cf JH |
4127 | |
4128 | FOR_EACH_DEFINED_FUNCTION (node) | |
29f1e2b1 JH |
4129 | if (!node->alias |
4130 | && (flag_generate_lto || flag_generate_offload|| flag_wpa | |
4131 | || opt_for_fn (node->decl, optimize))) | |
27d020cf JH |
4132 | inline_analyze_function (node); |
4133 | } | |
4134 | ||
4135 | ||
4136 | /* Write inline summary for edge E to OB. */ | |
4137 | ||
4138 | static void | |
99b1c316 | 4139 | read_ipa_call_summary (class lto_input_block *ib, struct cgraph_edge *e, |
ddfb1317 | 4140 | bool prevails) |
27d020cf | 4141 | { |
99b1c316 | 4142 | class ipa_call_summary *es = prevails |
ddfb1317 | 4143 | ? ipa_call_summaries->get_create (e) : NULL; |
27d020cf JH |
4144 | predicate p; |
4145 | int length, i; | |
4146 | ||
ddfb1317 JH |
4147 | int size = streamer_read_uhwi (ib); |
4148 | int time = streamer_read_uhwi (ib); | |
4149 | int depth = streamer_read_uhwi (ib); | |
4150 | ||
4151 | if (es) | |
4152 | { | |
4153 | es->call_stmt_size = size; | |
4154 | es->call_stmt_time = time; | |
4155 | es->loop_depth = depth; | |
4156 | } | |
0fab169b PK |
4157 | |
4158 | bitpack_d bp = streamer_read_bitpack (ib); | |
ddfb1317 JH |
4159 | if (es) |
4160 | es->is_return_callee_uncaptured = bp_unpack_value (&bp, 1); | |
4161 | else | |
4162 | bp_unpack_value (&bp, 1); | |
0fab169b | 4163 | |
27d020cf | 4164 | p.stream_in (ib); |
ddfb1317 JH |
4165 | if (es) |
4166 | edge_set_predicate (e, &p); | |
27d020cf | 4167 | length = streamer_read_uhwi (ib); |
ddfb1317 | 4168 | if (length && es && e->possibly_call_in_translation_unit_p ()) |
27d020cf | 4169 | { |
cb3874dc | 4170 | es->param.safe_grow_cleared (length, true); |
27d020cf JH |
4171 | for (i = 0; i < length; i++) |
4172 | es->param[i].change_prob = streamer_read_uhwi (ib); | |
4173 | } | |
ddfb1317 JH |
4174 | else |
4175 | { | |
4176 | for (i = 0; i < length; i++) | |
4177 | streamer_read_uhwi (ib); | |
4178 | } | |
27d020cf JH |
4179 | } |
4180 | ||
4181 | ||
4182 | /* Stream in inline summaries from the section. */ | |
4183 | ||
4184 | static void | |
4185 | inline_read_section (struct lto_file_decl_data *file_data, const char *data, | |
4186 | size_t len) | |
4187 | { | |
4188 | const struct lto_function_header *header = | |
4189 | (const struct lto_function_header *) data; | |
4190 | const int cfg_offset = sizeof (struct lto_function_header); | |
4191 | const int main_offset = cfg_offset + header->cfg_size; | |
4192 | const int string_offset = main_offset + header->main_size; | |
99b1c316 | 4193 | class data_in *data_in; |
27d020cf JH |
4194 | unsigned int i, count2, j; |
4195 | unsigned int f_count; | |
4196 | ||
4197 | lto_input_block ib ((const char *) data + main_offset, header->main_size, | |
4198 | file_data->mode_table); | |
4199 | ||
4200 | data_in = | |
4201 | lto_data_in_create (file_data, (const char *) data + string_offset, | |
4202 | header->string_size, vNULL); | |
4203 | f_count = streamer_read_uhwi (&ib); | |
4204 | for (i = 0; i < f_count; i++) | |
4205 | { | |
4206 | unsigned int index; | |
4207 | struct cgraph_node *node; | |
99b1c316 | 4208 | class ipa_fn_summary *info; |
40a777e8 | 4209 | class ipa_node_params *params_summary; |
f658ad30 | 4210 | class ipa_size_summary *size_info; |
27d020cf JH |
4211 | lto_symtab_encoder_t encoder; |
4212 | struct bitpack_d bp; | |
4213 | struct cgraph_edge *e; | |
4214 | predicate p; | |
4215 | ||
4216 | index = streamer_read_uhwi (&ib); | |
4217 | encoder = file_data->symtab_node_encoder; | |
4218 | node = dyn_cast<cgraph_node *> (lto_symtab_encoder_deref (encoder, | |
4219 | index)); | |
ddfb1317 | 4220 | info = node->prevailing_p () ? ipa_fn_summaries->get_create (node) : NULL; |
40a777e8 | 4221 | params_summary = node->prevailing_p () ? IPA_NODE_REF (node) : NULL; |
f658ad30 JH |
4222 | size_info = node->prevailing_p () |
4223 | ? ipa_size_summaries->get_create (node) : NULL; | |
27d020cf | 4224 | |
ddfb1317 JH |
4225 | int stack_size = streamer_read_uhwi (&ib); |
4226 | int size = streamer_read_uhwi (&ib); | |
4227 | sreal time = sreal::stream_in (&ib); | |
4228 | ||
4229 | if (info) | |
4230 | { | |
4231 | info->estimated_stack_size | |
f658ad30 JH |
4232 | = size_info->estimated_self_stack_size = stack_size; |
4233 | size_info->size = size_info->self_size = size; | |
ddfb1317 JH |
4234 | info->time = time; |
4235 | } | |
27d020cf JH |
4236 | |
4237 | bp = streamer_read_bitpack (&ib); | |
ddfb1317 JH |
4238 | if (info) |
4239 | { | |
4240 | info->inlinable = bp_unpack_value (&bp, 1); | |
4241 | info->fp_expressions = bp_unpack_value (&bp, 1); | |
4242 | } | |
4243 | else | |
4244 | { | |
4245 | bp_unpack_value (&bp, 1); | |
4246 | bp_unpack_value (&bp, 1); | |
4247 | } | |
27d020cf JH |
4248 | |
4249 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4250 | gcc_assert (!info || !info->conds); |
360386c7 JH |
4251 | if (info) |
4252 | vec_safe_reserve_exact (info->conds, count2); | |
27d020cf JH |
4253 | for (j = 0; j < count2; j++) |
4254 | { | |
4255 | struct condition c; | |
4307a485 | 4256 | unsigned int k, count3; |
27d020cf | 4257 | c.operand_num = streamer_read_uhwi (&ib); |
27d020cf | 4258 | c.code = (enum tree_code) streamer_read_uhwi (&ib); |
4307a485 | 4259 | c.type = stream_read_tree (&ib, data_in); |
27d020cf JH |
4260 | c.val = stream_read_tree (&ib, data_in); |
4261 | bp = streamer_read_bitpack (&ib); | |
4262 | c.agg_contents = bp_unpack_value (&bp, 1); | |
4263 | c.by_ref = bp_unpack_value (&bp, 1); | |
4264 | if (c.agg_contents) | |
4265 | c.offset = streamer_read_uhwi (&ib); | |
4307a485 | 4266 | count3 = streamer_read_uhwi (&ib); |
360386c7 JH |
4267 | c.param_ops = NULL; |
4268 | if (info) | |
4269 | vec_safe_reserve_exact (c.param_ops, count3); | |
40a777e8 JH |
4270 | if (params_summary) |
4271 | ipa_set_param_used_by_ipa_predicates | |
4272 | (params_summary, c.operand_num, true); | |
4307a485 FX |
4273 | for (k = 0; k < count3; k++) |
4274 | { | |
4275 | struct expr_eval_op op; | |
4276 | enum gimple_rhs_class rhs_class; | |
4277 | op.code = (enum tree_code) streamer_read_uhwi (&ib); | |
4278 | op.type = stream_read_tree (&ib, data_in); | |
4279 | switch (rhs_class = get_gimple_rhs_class (op.code)) | |
4280 | { | |
4281 | case GIMPLE_UNARY_RHS: | |
4282 | op.index = 0; | |
4283 | op.val[0] = NULL_TREE; | |
4284 | op.val[1] = NULL_TREE; | |
4285 | break; | |
4286 | ||
4287 | case GIMPLE_BINARY_RHS: | |
4288 | case GIMPLE_TERNARY_RHS: | |
4289 | bp = streamer_read_bitpack (&ib); | |
4290 | op.index = bp_unpack_value (&bp, 2); | |
4291 | op.val[0] = stream_read_tree (&ib, data_in); | |
4292 | if (rhs_class == GIMPLE_BINARY_RHS) | |
4293 | op.val[1] = NULL_TREE; | |
4294 | else | |
4295 | op.val[1] = stream_read_tree (&ib, data_in); | |
4296 | break; | |
4297 | ||
4298 | default: | |
4299 | fatal_error (UNKNOWN_LOCATION, | |
4300 | "invalid fnsummary in LTO stream"); | |
4301 | } | |
360386c7 JH |
4302 | if (info) |
4303 | c.param_ops->quick_push (op); | |
4307a485 | 4304 | } |
ddfb1317 | 4305 | if (info) |
360386c7 | 4306 | info->conds->quick_push (c); |
27d020cf JH |
4307 | } |
4308 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4309 | gcc_assert (!info || !info->size_time_table); |
360386c7 JH |
4310 | if (info && count2) |
4311 | vec_safe_reserve_exact (info->size_time_table, count2); | |
27d020cf JH |
4312 | for (j = 0; j < count2; j++) |
4313 | { | |
99b1c316 | 4314 | class size_time_entry e; |
27d020cf JH |
4315 | |
4316 | e.size = streamer_read_uhwi (&ib); | |
4317 | e.time = sreal::stream_in (&ib); | |
4318 | e.exec_predicate.stream_in (&ib); | |
4319 | e.nonconst_predicate.stream_in (&ib); | |
4320 | ||
ddfb1317 | 4321 | if (info) |
360386c7 | 4322 | info->size_time_table->quick_push (e); |
27d020cf JH |
4323 | } |
4324 | ||
4325 | p.stream_in (&ib); | |
ddfb1317 JH |
4326 | if (info) |
4327 | set_hint_predicate (&info->loop_iterations, p); | |
27d020cf | 4328 | p.stream_in (&ib); |
ddfb1317 JH |
4329 | if (info) |
4330 | set_hint_predicate (&info->loop_stride, p); | |
27d020cf | 4331 | for (e = node->callees; e; e = e->next_callee) |
ddfb1317 | 4332 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf | 4333 | for (e = node->indirect_calls; e; e = e->next_callee) |
ddfb1317 | 4334 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf JH |
4335 | } |
4336 | ||
0bceb671 | 4337 | lto_free_section_data (file_data, LTO_section_ipa_fn_summary, NULL, data, |
27d020cf JH |
4338 | len); |
4339 | lto_data_in_delete (data_in); | |
4340 | } | |
4341 | ||
4342 | ||
4343 | /* Read inline summary. Jump functions are shared among ipa-cp | |
4344 | and inliner, so when ipa-cp is active, we don't need to write them | |
4345 | twice. */ | |
4346 | ||
d2db2e6b JH |
4347 | static void |
4348 | ipa_fn_summary_read (void) | |
27d020cf JH |
4349 | { |
4350 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
4351 | struct lto_file_decl_data *file_data; | |
4352 | unsigned int j = 0; | |
4353 | ||
0bceb671 | 4354 | ipa_fn_summary_alloc (); |
27d020cf JH |
4355 | |
4356 | while ((file_data = file_data_vec[j++])) | |
4357 | { | |
4358 | size_t len; | |
3c56d8d8 ML |
4359 | const char *data |
4360 | = lto_get_summary_section_data (file_data, LTO_section_ipa_fn_summary, | |
4361 | &len); | |
27d020cf JH |
4362 | if (data) |
4363 | inline_read_section (file_data, data, len); | |
4364 | else | |
4365 | /* Fatal error here. We do not want to support compiling ltrans units | |
4366 | with different version of compiler or different flags than the WPA | |
4367 | unit, so this should never happen. */ | |
4368 | fatal_error (input_location, | |
4369 | "ipa inline summary is missing in input file"); | |
4370 | } | |
29f1e2b1 JH |
4371 | ipa_register_cgraph_hooks (); |
4372 | if (!flag_ipa_cp) | |
4373 | ipa_prop_read_jump_functions (); | |
27d020cf | 4374 | |
0bceb671 JH |
4375 | gcc_assert (ipa_fn_summaries); |
4376 | ipa_fn_summaries->enable_insertion_hook (); | |
27d020cf JH |
4377 | } |
4378 | ||
4379 | ||
4380 | /* Write inline summary for edge E to OB. */ | |
4381 | ||
4382 | static void | |
4383 | write_ipa_call_summary (struct output_block *ob, struct cgraph_edge *e) | |
4384 | { | |
99b1c316 | 4385 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
4386 | int i; |
4387 | ||
4388 | streamer_write_uhwi (ob, es->call_stmt_size); | |
4389 | streamer_write_uhwi (ob, es->call_stmt_time); | |
4390 | streamer_write_uhwi (ob, es->loop_depth); | |
0fab169b PK |
4391 | |
4392 | bitpack_d bp = bitpack_create (ob->main_stream); | |
4393 | bp_pack_value (&bp, es->is_return_callee_uncaptured, 1); | |
4394 | streamer_write_bitpack (&bp); | |
4395 | ||
27d020cf JH |
4396 | if (es->predicate) |
4397 | es->predicate->stream_out (ob); | |
4398 | else | |
4399 | streamer_write_uhwi (ob, 0); | |
4400 | streamer_write_uhwi (ob, es->param.length ()); | |
4401 | for (i = 0; i < (int) es->param.length (); i++) | |
4402 | streamer_write_uhwi (ob, es->param[i].change_prob); | |
4403 | } | |
4404 | ||
4405 | ||
4406 | /* Write inline summary for node in SET. | |
4407 | Jump functions are shared among ipa-cp and inliner, so when ipa-cp is | |
4408 | active, we don't need to write them twice. */ | |
4409 | ||
d2db2e6b JH |
4410 | static void |
4411 | ipa_fn_summary_write (void) | |
27d020cf | 4412 | { |
0bceb671 | 4413 | struct output_block *ob = create_output_block (LTO_section_ipa_fn_summary); |
16570c12 | 4414 | lto_symtab_encoder_iterator lsei; |
27d020cf JH |
4415 | lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder; |
4416 | unsigned int count = 0; | |
27d020cf | 4417 | |
16570c12 JJ |
4418 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4419 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4420 | { |
16570c12 JJ |
4421 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4422 | if (cnode->definition && !cnode->alias) | |
27d020cf JH |
4423 | count++; |
4424 | } | |
4425 | streamer_write_uhwi (ob, count); | |
4426 | ||
16570c12 JJ |
4427 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4428 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4429 | { |
16570c12 JJ |
4430 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4431 | if (cnode->definition && !cnode->alias) | |
27d020cf | 4432 | { |
99b1c316 | 4433 | class ipa_fn_summary *info = ipa_fn_summaries->get (cnode); |
f658ad30 | 4434 | class ipa_size_summary *size_info = ipa_size_summaries->get (cnode); |
27d020cf JH |
4435 | struct bitpack_d bp; |
4436 | struct cgraph_edge *edge; | |
4437 | int i; | |
4438 | size_time_entry *e; | |
4439 | struct condition *c; | |
4440 | ||
4441 | streamer_write_uhwi (ob, lto_symtab_encoder_encode (encoder, cnode)); | |
f658ad30 JH |
4442 | streamer_write_hwi (ob, size_info->estimated_self_stack_size); |
4443 | streamer_write_hwi (ob, size_info->self_size); | |
27d020cf JH |
4444 | info->time.stream_out (ob); |
4445 | bp = bitpack_create (ob->main_stream); | |
4446 | bp_pack_value (&bp, info->inlinable, 1); | |
5e9d6aa4 | 4447 | bp_pack_value (&bp, false, 1); |
27d020cf JH |
4448 | bp_pack_value (&bp, info->fp_expressions, 1); |
4449 | streamer_write_bitpack (&bp); | |
4450 | streamer_write_uhwi (ob, vec_safe_length (info->conds)); | |
4451 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
4452 | { | |
4307a485 FX |
4453 | int j; |
4454 | struct expr_eval_op *op; | |
4455 | ||
27d020cf | 4456 | streamer_write_uhwi (ob, c->operand_num); |
27d020cf | 4457 | streamer_write_uhwi (ob, c->code); |
4307a485 | 4458 | stream_write_tree (ob, c->type, true); |
27d020cf JH |
4459 | stream_write_tree (ob, c->val, true); |
4460 | bp = bitpack_create (ob->main_stream); | |
4461 | bp_pack_value (&bp, c->agg_contents, 1); | |
4462 | bp_pack_value (&bp, c->by_ref, 1); | |
4463 | streamer_write_bitpack (&bp); | |
4464 | if (c->agg_contents) | |
4465 | streamer_write_uhwi (ob, c->offset); | |
4307a485 FX |
4466 | streamer_write_uhwi (ob, vec_safe_length (c->param_ops)); |
4467 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
4468 | { | |
4469 | streamer_write_uhwi (ob, op->code); | |
4470 | stream_write_tree (ob, op->type, true); | |
4471 | if (op->val[0]) | |
4472 | { | |
4473 | bp = bitpack_create (ob->main_stream); | |
4474 | bp_pack_value (&bp, op->index, 2); | |
4475 | streamer_write_bitpack (&bp); | |
4476 | stream_write_tree (ob, op->val[0], true); | |
4477 | if (op->val[1]) | |
4478 | stream_write_tree (ob, op->val[1], true); | |
4479 | } | |
4480 | } | |
27d020cf JH |
4481 | } |
4482 | streamer_write_uhwi (ob, vec_safe_length (info->size_time_table)); | |
4483 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) | |
4484 | { | |
4485 | streamer_write_uhwi (ob, e->size); | |
4486 | e->time.stream_out (ob); | |
4487 | e->exec_predicate.stream_out (ob); | |
4488 | e->nonconst_predicate.stream_out (ob); | |
4489 | } | |
4490 | if (info->loop_iterations) | |
4491 | info->loop_iterations->stream_out (ob); | |
4492 | else | |
4493 | streamer_write_uhwi (ob, 0); | |
4494 | if (info->loop_stride) | |
4495 | info->loop_stride->stream_out (ob); | |
4496 | else | |
4497 | streamer_write_uhwi (ob, 0); | |
27d020cf JH |
4498 | for (edge = cnode->callees; edge; edge = edge->next_callee) |
4499 | write_ipa_call_summary (ob, edge); | |
4500 | for (edge = cnode->indirect_calls; edge; edge = edge->next_callee) | |
4501 | write_ipa_call_summary (ob, edge); | |
4502 | } | |
4503 | } | |
4504 | streamer_write_char_stream (ob->main_stream, 0); | |
4505 | produce_asm (ob, NULL); | |
4506 | destroy_output_block (ob); | |
4507 | ||
29f1e2b1 | 4508 | if (!flag_ipa_cp) |
27d020cf JH |
4509 | ipa_prop_write_jump_functions (); |
4510 | } | |
4511 | ||
4512 | ||
f658ad30 | 4513 | /* Release function summary. */ |
27d020cf JH |
4514 | |
4515 | void | |
d2db2e6b | 4516 | ipa_free_fn_summary (void) |
27d020cf | 4517 | { |
27d020cf JH |
4518 | if (!ipa_call_summaries) |
4519 | return; | |
ddf628e4 | 4520 | ggc_delete (ipa_fn_summaries); |
0bceb671 | 4521 | ipa_fn_summaries = NULL; |
27d020cf JH |
4522 | delete ipa_call_summaries; |
4523 | ipa_call_summaries = NULL; | |
4524 | edge_predicate_pool.release (); | |
f658ad30 JH |
4525 | /* During IPA this is one of largest datastructures to release. */ |
4526 | if (flag_wpa) | |
4527 | ggc_trim (); | |
4528 | } | |
4529 | ||
4530 | /* Release function summary. */ | |
4531 | ||
4532 | void | |
4533 | ipa_free_size_summary (void) | |
4534 | { | |
4535 | if (!ipa_size_summaries) | |
4536 | return; | |
78cd68c0 | 4537 | delete ipa_size_summaries; |
f658ad30 | 4538 | ipa_size_summaries = NULL; |
27d020cf | 4539 | } |
d2db2e6b JH |
4540 | |
4541 | namespace { | |
4542 | ||
4543 | const pass_data pass_data_local_fn_summary = | |
4544 | { | |
4545 | GIMPLE_PASS, /* type */ | |
4546 | "local-fnsummary", /* name */ | |
4547 | OPTGROUP_INLINE, /* optinfo_flags */ | |
4548 | TV_INLINE_PARAMETERS, /* tv_id */ | |
4549 | 0, /* properties_required */ | |
4550 | 0, /* properties_provided */ | |
4551 | 0, /* properties_destroyed */ | |
4552 | 0, /* todo_flags_start */ | |
4553 | 0, /* todo_flags_finish */ | |
4554 | }; | |
4555 | ||
4556 | class pass_local_fn_summary : public gimple_opt_pass | |
4557 | { | |
4558 | public: | |
4559 | pass_local_fn_summary (gcc::context *ctxt) | |
4560 | : gimple_opt_pass (pass_data_local_fn_summary, ctxt) | |
4561 | {} | |
4562 | ||
4563 | /* opt_pass methods: */ | |
4564 | opt_pass * clone () { return new pass_local_fn_summary (m_ctxt); } | |
4565 | virtual unsigned int execute (function *) | |
4566 | { | |
4567 | return compute_fn_summary_for_current (); | |
4568 | } | |
4569 | ||
4570 | }; // class pass_local_fn_summary | |
4571 | ||
4572 | } // anon namespace | |
4573 | ||
4574 | gimple_opt_pass * | |
4575 | make_pass_local_fn_summary (gcc::context *ctxt) | |
4576 | { | |
4577 | return new pass_local_fn_summary (ctxt); | |
4578 | } | |
4579 | ||
4580 | ||
4581 | /* Free inline summary. */ | |
4582 | ||
4583 | namespace { | |
4584 | ||
4585 | const pass_data pass_data_ipa_free_fn_summary = | |
4586 | { | |
4587 | SIMPLE_IPA_PASS, /* type */ | |
4588 | "free-fnsummary", /* name */ | |
4589 | OPTGROUP_NONE, /* optinfo_flags */ | |
4590 | TV_IPA_FREE_INLINE_SUMMARY, /* tv_id */ | |
4591 | 0, /* properties_required */ | |
4592 | 0, /* properties_provided */ | |
4593 | 0, /* properties_destroyed */ | |
4594 | 0, /* todo_flags_start */ | |
442db276 | 4595 | 0, /* todo_flags_finish */ |
d2db2e6b JH |
4596 | }; |
4597 | ||
4598 | class pass_ipa_free_fn_summary : public simple_ipa_opt_pass | |
4599 | { | |
4600 | public: | |
4601 | pass_ipa_free_fn_summary (gcc::context *ctxt) | |
442db276 JJ |
4602 | : simple_ipa_opt_pass (pass_data_ipa_free_fn_summary, ctxt), |
4603 | small_p (false) | |
d2db2e6b JH |
4604 | {} |
4605 | ||
4606 | /* opt_pass methods: */ | |
442db276 JJ |
4607 | opt_pass *clone () { return new pass_ipa_free_fn_summary (m_ctxt); } |
4608 | void set_pass_param (unsigned int n, bool param) | |
4609 | { | |
4610 | gcc_assert (n == 0); | |
4611 | small_p = param; | |
4612 | } | |
f658ad30 | 4613 | virtual bool gate (function *) { return true; } |
d2db2e6b JH |
4614 | virtual unsigned int execute (function *) |
4615 | { | |
4616 | ipa_free_fn_summary (); | |
f658ad30 JH |
4617 | if (!flag_wpa) |
4618 | ipa_free_size_summary (); | |
12485662 | 4619 | return 0; |
d2db2e6b JH |
4620 | } |
4621 | ||
442db276 JJ |
4622 | private: |
4623 | bool small_p; | |
d2db2e6b JH |
4624 | }; // class pass_ipa_free_fn_summary |
4625 | ||
4626 | } // anon namespace | |
4627 | ||
4628 | simple_ipa_opt_pass * | |
4629 | make_pass_ipa_free_fn_summary (gcc::context *ctxt) | |
4630 | { | |
4631 | return new pass_ipa_free_fn_summary (ctxt); | |
4632 | } | |
4633 | ||
4634 | namespace { | |
4635 | ||
4636 | const pass_data pass_data_ipa_fn_summary = | |
4637 | { | |
4638 | IPA_PASS, /* type */ | |
4639 | "fnsummary", /* name */ | |
4640 | OPTGROUP_INLINE, /* optinfo_flags */ | |
66447ef0 | 4641 | TV_IPA_FNSUMMARY, /* tv_id */ |
d2db2e6b JH |
4642 | 0, /* properties_required */ |
4643 | 0, /* properties_provided */ | |
4644 | 0, /* properties_destroyed */ | |
4645 | 0, /* todo_flags_start */ | |
4646 | ( TODO_dump_symtab ), /* todo_flags_finish */ | |
4647 | }; | |
4648 | ||
4649 | class pass_ipa_fn_summary : public ipa_opt_pass_d | |
4650 | { | |
4651 | public: | |
4652 | pass_ipa_fn_summary (gcc::context *ctxt) | |
4653 | : ipa_opt_pass_d (pass_data_ipa_fn_summary, ctxt, | |
4654 | ipa_fn_summary_generate, /* generate_summary */ | |
4655 | ipa_fn_summary_write, /* write_summary */ | |
4656 | ipa_fn_summary_read, /* read_summary */ | |
4657 | NULL, /* write_optimization_summary */ | |
4658 | NULL, /* read_optimization_summary */ | |
4659 | NULL, /* stmt_fixup */ | |
4660 | 0, /* function_transform_todo_flags_start */ | |
4661 | NULL, /* function_transform */ | |
4662 | NULL) /* variable_transform */ | |
4663 | {} | |
4664 | ||
4665 | /* opt_pass methods: */ | |
4666 | virtual unsigned int execute (function *) { return 0; } | |
4667 | ||
4668 | }; // class pass_ipa_fn_summary | |
4669 | ||
4670 | } // anon namespace | |
4671 | ||
4672 | ipa_opt_pass_d * | |
4673 | make_pass_ipa_fn_summary (gcc::context *ctxt) | |
4674 | { | |
4675 | return new pass_ipa_fn_summary (ctxt); | |
4676 | } | |
de4381a4 DM |
4677 | |
4678 | /* Reset all state within ipa-fnsummary.c so that we can rerun the compiler | |
4679 | within the same process. For use by toplev::finalize. */ | |
4680 | ||
4681 | void | |
4682 | ipa_fnsummary_c_finalize (void) | |
4683 | { | |
4684 | ipa_free_fn_summary (); | |
4685 | } |