]>
Commit | Line | Data |
---|---|---|
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); | |
b89e4559 JH |
983 | if (es->param[i].points_to_local_or_readonly_memory) |
984 | fprintf (f, "%*s op%i points to local or readonly memory\n", | |
985 | indent + 2, "", i); | |
27d020cf JH |
986 | } |
987 | if (!edge->inline_failed) | |
988 | { | |
f658ad30 JH |
989 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
990 | fprintf (f, "%*sStack frame offset %i, callee self size %i\n", | |
27d020cf | 991 | indent + 2, "", |
f658ad30 JH |
992 | (int) ipa_get_stack_frame_offset (callee), |
993 | (int) ss->estimated_self_stack_size); | |
27d020cf JH |
994 | dump_ipa_call_summary (f, indent + 2, callee, info); |
995 | } | |
996 | } | |
997 | for (edge = node->indirect_calls; edge; edge = edge->next_callee) | |
998 | { | |
99b1c316 | 999 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
41f0e819 | 1000 | fprintf (f, "%*sindirect call loop depth:%2i freq:%4.2f size:%2i" |
27d020cf JH |
1001 | " time: %2i", |
1002 | indent, "", | |
1003 | es->loop_depth, | |
41f0e819 JH |
1004 | edge->sreal_frequency ().to_double (), es->call_stmt_size, |
1005 | es->call_stmt_time); | |
27d020cf JH |
1006 | if (es->predicate) |
1007 | { | |
1008 | fprintf (f, "predicate: "); | |
1009 | es->predicate->dump (f, info->conds); | |
1010 | } | |
1011 | else | |
1012 | fprintf (f, "\n"); | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | ||
1017 | void | |
0bceb671 | 1018 | ipa_dump_fn_summary (FILE *f, struct cgraph_node *node) |
27d020cf JH |
1019 | { |
1020 | if (node->definition) | |
1021 | { | |
99b1c316 | 1022 | class ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 1023 | class ipa_size_summary *ss = ipa_size_summaries->get (node); |
56f62793 | 1024 | if (s != NULL) |
27d020cf | 1025 | { |
56f62793 ML |
1026 | size_time_entry *e; |
1027 | int i; | |
1028 | fprintf (f, "IPA function summary for %s", node->dump_name ()); | |
1029 | if (DECL_DISREGARD_INLINE_LIMITS (node->decl)) | |
1030 | fprintf (f, " always_inline"); | |
1031 | if (s->inlinable) | |
1032 | fprintf (f, " inlinable"); | |
1033 | if (s->fp_expressions) | |
1034 | fprintf (f, " fp_expression"); | |
1035 | fprintf (f, "\n global time: %f\n", s->time.to_double ()); | |
f658ad30 JH |
1036 | fprintf (f, " self size: %i\n", ss->self_size); |
1037 | fprintf (f, " global size: %i\n", ss->size); | |
56f62793 ML |
1038 | fprintf (f, " min size: %i\n", s->min_size); |
1039 | fprintf (f, " self stack: %i\n", | |
f658ad30 | 1040 | (int) ss->estimated_self_stack_size); |
56f62793 ML |
1041 | fprintf (f, " global stack: %i\n", (int) s->estimated_stack_size); |
1042 | if (s->growth) | |
1043 | fprintf (f, " estimated growth:%i\n", (int) s->growth); | |
1044 | if (s->scc_no) | |
1045 | fprintf (f, " In SCC: %i\n", (int) s->scc_no); | |
1046 | for (i = 0; vec_safe_iterate (s->size_time_table, i, &e); i++) | |
1047 | { | |
1048 | fprintf (f, " size:%f, time:%f", | |
1049 | (double) e->size / ipa_fn_summary::size_scale, | |
1050 | e->time.to_double ()); | |
1051 | if (e->exec_predicate != true) | |
1052 | { | |
1053 | fprintf (f, ", executed if:"); | |
1054 | e->exec_predicate.dump (f, s->conds, 0); | |
1055 | } | |
1056 | if (e->exec_predicate != e->nonconst_predicate) | |
1057 | { | |
1058 | fprintf (f, ", nonconst if:"); | |
1059 | e->nonconst_predicate.dump (f, s->conds, 0); | |
1060 | } | |
1061 | fprintf (f, "\n"); | |
1062 | } | |
1063 | if (s->loop_iterations) | |
27d020cf | 1064 | { |
56f62793 ML |
1065 | fprintf (f, " loop iterations:"); |
1066 | s->loop_iterations->dump (f, s->conds); | |
27d020cf | 1067 | } |
56f62793 | 1068 | if (s->loop_stride) |
27d020cf | 1069 | { |
56f62793 ML |
1070 | fprintf (f, " loop stride:"); |
1071 | s->loop_stride->dump (f, s->conds); | |
27d020cf | 1072 | } |
56f62793 ML |
1073 | fprintf (f, " calls:\n"); |
1074 | dump_ipa_call_summary (f, 4, node, s); | |
27d020cf JH |
1075 | fprintf (f, "\n"); |
1076 | } | |
56f62793 ML |
1077 | else |
1078 | fprintf (f, "IPA summary for %s is missing.\n", node->dump_name ()); | |
27d020cf JH |
1079 | } |
1080 | } | |
1081 | ||
1082 | DEBUG_FUNCTION void | |
0bceb671 | 1083 | ipa_debug_fn_summary (struct cgraph_node *node) |
27d020cf | 1084 | { |
0bceb671 | 1085 | ipa_dump_fn_summary (stderr, node); |
27d020cf JH |
1086 | } |
1087 | ||
1088 | void | |
0bceb671 | 1089 | ipa_dump_fn_summaries (FILE *f) |
27d020cf JH |
1090 | { |
1091 | struct cgraph_node *node; | |
1092 | ||
1093 | FOR_EACH_DEFINED_FUNCTION (node) | |
a62bfab5 | 1094 | if (!node->inlined_to) |
0bceb671 | 1095 | ipa_dump_fn_summary (f, node); |
27d020cf JH |
1096 | } |
1097 | ||
1098 | /* Callback of walk_aliased_vdefs. Flags that it has been invoked to the | |
1099 | boolean variable pointed to by DATA. */ | |
1100 | ||
1101 | static bool | |
1102 | mark_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef ATTRIBUTE_UNUSED, | |
1103 | void *data) | |
1104 | { | |
1105 | bool *b = (bool *) data; | |
1106 | *b = true; | |
1107 | return true; | |
1108 | } | |
1109 | ||
1110 | /* If OP refers to value of function parameter, return the corresponding | |
1111 | parameter. If non-NULL, the size of the memory load (or the SSA_NAME of the | |
1112 | PARM_DECL) will be stored to *SIZE_P in that case too. */ | |
1113 | ||
1114 | static tree | |
c628d1c3 | 1115 | unmodified_parm_1 (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1116 | poly_int64 *size_p) |
27d020cf JH |
1117 | { |
1118 | /* SSA_NAME referring to parm default def? */ | |
1119 | if (TREE_CODE (op) == SSA_NAME | |
1120 | && SSA_NAME_IS_DEFAULT_DEF (op) | |
1121 | && TREE_CODE (SSA_NAME_VAR (op)) == PARM_DECL) | |
1122 | { | |
1123 | if (size_p) | |
86003645 | 1124 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1125 | return SSA_NAME_VAR (op); |
1126 | } | |
1127 | /* Non-SSA parm reference? */ | |
1128 | if (TREE_CODE (op) == PARM_DECL) | |
1129 | { | |
1130 | bool modified = false; | |
1131 | ||
1132 | ao_ref refd; | |
1133 | ao_ref_init (&refd, op); | |
c628d1c3 MJ |
1134 | int walked = walk_aliased_vdefs (&refd, gimple_vuse (stmt), |
1135 | mark_modified, &modified, NULL, NULL, | |
1136 | fbi->aa_walk_budget + 1); | |
1137 | if (walked < 0) | |
1138 | { | |
1139 | fbi->aa_walk_budget = 0; | |
1140 | return NULL_TREE; | |
1141 | } | |
27d020cf JH |
1142 | if (!modified) |
1143 | { | |
1144 | if (size_p) | |
86003645 | 1145 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1146 | return op; |
1147 | } | |
1148 | } | |
1149 | return NULL_TREE; | |
1150 | } | |
1151 | ||
1152 | /* If OP refers to value of function parameter, return the corresponding | |
1153 | parameter. Also traverse chains of SSA register assignments. If non-NULL, | |
1154 | the size of the memory load (or the SSA_NAME of the PARM_DECL) will be | |
1155 | stored to *SIZE_P in that case too. */ | |
1156 | ||
1157 | static tree | |
c628d1c3 | 1158 | unmodified_parm (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1159 | poly_int64 *size_p) |
27d020cf | 1160 | { |
c628d1c3 | 1161 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1162 | if (res) |
1163 | return res; | |
1164 | ||
1165 | if (TREE_CODE (op) == SSA_NAME | |
1166 | && !SSA_NAME_IS_DEFAULT_DEF (op) | |
1167 | && gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
c628d1c3 | 1168 | return unmodified_parm (fbi, SSA_NAME_DEF_STMT (op), |
27d020cf JH |
1169 | gimple_assign_rhs1 (SSA_NAME_DEF_STMT (op)), |
1170 | size_p); | |
1171 | return NULL_TREE; | |
1172 | } | |
1173 | ||
1174 | /* If OP refers to a value of a function parameter or value loaded from an | |
1175 | aggregate passed to a parameter (either by value or reference), return TRUE | |
1176 | and store the number of the parameter to *INDEX_P, the access size into | |
1177 | *SIZE_P, and information whether and how it has been loaded from an | |
1178 | aggregate into *AGGPOS. INFO describes the function parameters, STMT is the | |
1179 | statement in which OP is used or loaded. */ | |
1180 | ||
1181 | static bool | |
1182 | unmodified_parm_or_parm_agg_item (struct ipa_func_body_info *fbi, | |
1183 | gimple *stmt, tree op, int *index_p, | |
86003645 | 1184 | poly_int64 *size_p, |
27d020cf JH |
1185 | struct agg_position_info *aggpos) |
1186 | { | |
c628d1c3 | 1187 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1188 | |
1189 | gcc_checking_assert (aggpos); | |
1190 | if (res) | |
1191 | { | |
1192 | *index_p = ipa_get_param_decl_index (fbi->info, res); | |
1193 | if (*index_p < 0) | |
1194 | return false; | |
1195 | aggpos->agg_contents = false; | |
1196 | aggpos->by_ref = false; | |
1197 | return true; | |
1198 | } | |
1199 | ||
1200 | if (TREE_CODE (op) == SSA_NAME) | |
1201 | { | |
1202 | if (SSA_NAME_IS_DEFAULT_DEF (op) | |
1203 | || !gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
1204 | return false; | |
1205 | stmt = SSA_NAME_DEF_STMT (op); | |
1206 | op = gimple_assign_rhs1 (stmt); | |
1207 | if (!REFERENCE_CLASS_P (op)) | |
1208 | return unmodified_parm_or_parm_agg_item (fbi, stmt, op, index_p, size_p, | |
1209 | aggpos); | |
1210 | } | |
1211 | ||
1212 | aggpos->agg_contents = true; | |
1213 | return ipa_load_from_parm_agg (fbi, fbi->info->descriptors, | |
1214 | stmt, op, index_p, &aggpos->offset, | |
1215 | size_p, &aggpos->by_ref); | |
1216 | } | |
1217 | ||
1218 | /* See if statement might disappear after inlining. | |
1219 | 0 - means not eliminated | |
1220 | 1 - half of statements goes away | |
1221 | 2 - for sure it is eliminated. | |
1222 | We are not terribly sophisticated, basically looking for simple abstraction | |
1223 | penalty wrappers. */ | |
1224 | ||
1225 | static int | |
c628d1c3 | 1226 | eliminated_by_inlining_prob (ipa_func_body_info *fbi, gimple *stmt) |
27d020cf JH |
1227 | { |
1228 | enum gimple_code code = gimple_code (stmt); | |
1229 | enum tree_code rhs_code; | |
1230 | ||
1231 | if (!optimize) | |
1232 | return 0; | |
1233 | ||
1234 | switch (code) | |
1235 | { | |
1236 | case GIMPLE_RETURN: | |
1237 | return 2; | |
1238 | case GIMPLE_ASSIGN: | |
1239 | if (gimple_num_ops (stmt) != 2) | |
1240 | return 0; | |
1241 | ||
1242 | rhs_code = gimple_assign_rhs_code (stmt); | |
1243 | ||
1244 | /* Casts of parameters, loads from parameters passed by reference | |
1245 | and stores to return value or parameters are often free after | |
956d615d | 1246 | inlining due to SRA and further combining. |
27d020cf JH |
1247 | Assume that half of statements goes away. */ |
1248 | if (CONVERT_EXPR_CODE_P (rhs_code) | |
1249 | || rhs_code == VIEW_CONVERT_EXPR | |
1250 | || rhs_code == ADDR_EXPR | |
1251 | || gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS) | |
1252 | { | |
1253 | tree rhs = gimple_assign_rhs1 (stmt); | |
1254 | tree lhs = gimple_assign_lhs (stmt); | |
1255 | tree inner_rhs = get_base_address (rhs); | |
1256 | tree inner_lhs = get_base_address (lhs); | |
1257 | bool rhs_free = false; | |
1258 | bool lhs_free = false; | |
1259 | ||
1260 | if (!inner_rhs) | |
1261 | inner_rhs = rhs; | |
1262 | if (!inner_lhs) | |
1263 | inner_lhs = lhs; | |
1264 | ||
1265 | /* Reads of parameter are expected to be free. */ | |
c628d1c3 | 1266 | if (unmodified_parm (fbi, stmt, inner_rhs, NULL)) |
27d020cf JH |
1267 | rhs_free = true; |
1268 | /* Match expressions of form &this->field. Those will most likely | |
1269 | combine with something upstream after inlining. */ | |
1270 | else if (TREE_CODE (inner_rhs) == ADDR_EXPR) | |
1271 | { | |
1272 | tree op = get_base_address (TREE_OPERAND (inner_rhs, 0)); | |
1273 | if (TREE_CODE (op) == PARM_DECL) | |
1274 | rhs_free = true; | |
1275 | else if (TREE_CODE (op) == MEM_REF | |
c628d1c3 MJ |
1276 | && unmodified_parm (fbi, stmt, TREE_OPERAND (op, 0), |
1277 | NULL)) | |
27d020cf JH |
1278 | rhs_free = true; |
1279 | } | |
1280 | ||
1281 | /* When parameter is not SSA register because its address is taken | |
1282 | and it is just copied into one, the statement will be completely | |
1283 | free after inlining (we will copy propagate backward). */ | |
1284 | if (rhs_free && is_gimple_reg (lhs)) | |
1285 | return 2; | |
1286 | ||
1287 | /* Reads of parameters passed by reference | |
1288 | expected to be free (i.e. optimized out after inlining). */ | |
1289 | if (TREE_CODE (inner_rhs) == MEM_REF | |
c628d1c3 | 1290 | && unmodified_parm (fbi, stmt, TREE_OPERAND (inner_rhs, 0), NULL)) |
27d020cf JH |
1291 | rhs_free = true; |
1292 | ||
1293 | /* Copying parameter passed by reference into gimple register is | |
1294 | probably also going to copy propagate, but we can't be quite | |
1295 | sure. */ | |
1296 | if (rhs_free && is_gimple_reg (lhs)) | |
1297 | lhs_free = true; | |
1298 | ||
1299 | /* Writes to parameters, parameters passed by value and return value | |
956d615d | 1300 | (either directly or passed via invisible reference) are free. |
27d020cf JH |
1301 | |
1302 | TODO: We ought to handle testcase like | |
1303 | struct a {int a,b;}; | |
1304 | struct a | |
956d615d | 1305 | returnstruct (void) |
27d020cf JH |
1306 | { |
1307 | struct a a ={1,2}; | |
1308 | return a; | |
1309 | } | |
1310 | ||
1311 | This translate into: | |
1312 | ||
956d615d | 1313 | returnstruct () |
27d020cf JH |
1314 | { |
1315 | int a$b; | |
1316 | int a$a; | |
1317 | struct a a; | |
1318 | struct a D.2739; | |
1319 | ||
1320 | <bb 2>: | |
1321 | D.2739.a = 1; | |
1322 | D.2739.b = 2; | |
1323 | return D.2739; | |
1324 | ||
1325 | } | |
1326 | For that we either need to copy ipa-split logic detecting writes | |
1327 | to return value. */ | |
1328 | if (TREE_CODE (inner_lhs) == PARM_DECL | |
1329 | || TREE_CODE (inner_lhs) == RESULT_DECL | |
1330 | || (TREE_CODE (inner_lhs) == MEM_REF | |
c628d1c3 MJ |
1331 | && (unmodified_parm (fbi, stmt, TREE_OPERAND (inner_lhs, 0), |
1332 | NULL) | |
27d020cf JH |
1333 | || (TREE_CODE (TREE_OPERAND (inner_lhs, 0)) == SSA_NAME |
1334 | && SSA_NAME_VAR (TREE_OPERAND (inner_lhs, 0)) | |
1335 | && TREE_CODE (SSA_NAME_VAR (TREE_OPERAND | |
1336 | (inner_lhs, | |
1337 | 0))) == RESULT_DECL)))) | |
1338 | lhs_free = true; | |
1339 | if (lhs_free | |
1340 | && (is_gimple_reg (rhs) || is_gimple_min_invariant (rhs))) | |
1341 | rhs_free = true; | |
1342 | if (lhs_free && rhs_free) | |
1343 | return 1; | |
1344 | } | |
1345 | return 0; | |
1346 | default: | |
1347 | return 0; | |
1348 | } | |
1349 | } | |
1350 | ||
4307a485 FX |
1351 | /* Analyze EXPR if it represents a series of simple operations performed on |
1352 | a function parameter and return true if so. FBI, STMT, EXPR, INDEX_P and | |
1353 | AGGPOS have the same meaning like in unmodified_parm_or_parm_agg_item. | |
1354 | Type of the parameter or load from an aggregate via the parameter is | |
1355 | stored in *TYPE_P. Operations on the parameter are recorded to | |
1356 | PARAM_OPS_P if it is not NULL. */ | |
1357 | ||
1358 | static bool | |
1359 | decompose_param_expr (struct ipa_func_body_info *fbi, | |
1360 | gimple *stmt, tree expr, | |
1361 | int *index_p, tree *type_p, | |
1362 | struct agg_position_info *aggpos, | |
1363 | expr_eval_ops *param_ops_p = NULL) | |
1364 | { | |
fdfd7f53 | 1365 | int op_limit = opt_for_fn (fbi->node->decl, param_ipa_max_param_expr_ops); |
4307a485 FX |
1366 | int op_count = 0; |
1367 | ||
1368 | if (param_ops_p) | |
1369 | *param_ops_p = NULL; | |
1370 | ||
1371 | while (true) | |
1372 | { | |
1373 | expr_eval_op eval_op; | |
1374 | unsigned rhs_count; | |
1375 | unsigned cst_count = 0; | |
1376 | ||
1377 | if (unmodified_parm_or_parm_agg_item (fbi, stmt, expr, index_p, NULL, | |
1378 | aggpos)) | |
1379 | { | |
1380 | tree type = TREE_TYPE (expr); | |
1381 | ||
1382 | if (aggpos->agg_contents) | |
1383 | { | |
1384 | /* Stop if containing bit-field. */ | |
1385 | if (TREE_CODE (expr) == BIT_FIELD_REF | |
1386 | || contains_bitfld_component_ref_p (expr)) | |
1387 | break; | |
1388 | } | |
1389 | ||
1390 | *type_p = type; | |
1391 | return true; | |
1392 | } | |
1393 | ||
1394 | if (TREE_CODE (expr) != SSA_NAME || SSA_NAME_IS_DEFAULT_DEF (expr)) | |
1395 | break; | |
1396 | ||
1397 | if (!is_gimple_assign (stmt = SSA_NAME_DEF_STMT (expr))) | |
1398 | break; | |
1399 | ||
1400 | switch (gimple_assign_rhs_class (stmt)) | |
1401 | { | |
1402 | case GIMPLE_SINGLE_RHS: | |
1403 | expr = gimple_assign_rhs1 (stmt); | |
1404 | continue; | |
1405 | ||
1406 | case GIMPLE_UNARY_RHS: | |
1407 | rhs_count = 1; | |
1408 | break; | |
1409 | ||
1410 | case GIMPLE_BINARY_RHS: | |
1411 | rhs_count = 2; | |
1412 | break; | |
1413 | ||
1414 | case GIMPLE_TERNARY_RHS: | |
1415 | rhs_count = 3; | |
1416 | break; | |
1417 | ||
1418 | default: | |
1419 | goto fail; | |
1420 | } | |
1421 | ||
1422 | /* Stop if expression is too complex. */ | |
1423 | if (op_count++ == op_limit) | |
1424 | break; | |
1425 | ||
1426 | if (param_ops_p) | |
1427 | { | |
1428 | eval_op.code = gimple_assign_rhs_code (stmt); | |
1429 | eval_op.type = TREE_TYPE (gimple_assign_lhs (stmt)); | |
1430 | eval_op.val[0] = NULL_TREE; | |
1431 | eval_op.val[1] = NULL_TREE; | |
1432 | } | |
1433 | ||
1434 | expr = NULL_TREE; | |
1435 | for (unsigned i = 0; i < rhs_count; i++) | |
1436 | { | |
1437 | tree op = gimple_op (stmt, i + 1); | |
1438 | ||
1439 | gcc_assert (op && !TYPE_P (op)); | |
1440 | if (is_gimple_ip_invariant (op)) | |
1441 | { | |
1442 | if (++cst_count == rhs_count) | |
1443 | goto fail; | |
1444 | ||
1445 | eval_op.val[cst_count - 1] = op; | |
1446 | } | |
1447 | else if (!expr) | |
1448 | { | |
1449 | /* Found a non-constant operand, and record its index in rhs | |
1450 | operands. */ | |
1451 | eval_op.index = i; | |
1452 | expr = op; | |
1453 | } | |
1454 | else | |
1455 | { | |
1456 | /* Found more than one non-constant operands. */ | |
1457 | goto fail; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | if (param_ops_p) | |
1462 | vec_safe_insert (*param_ops_p, 0, eval_op); | |
1463 | } | |
1464 | ||
1465 | /* Failed to decompose, free resource and return. */ | |
1466 | fail: | |
1467 | if (param_ops_p) | |
1468 | vec_free (*param_ops_p); | |
1469 | ||
1470 | return false; | |
1471 | } | |
27d020cf JH |
1472 | |
1473 | /* If BB ends by a conditional we can turn into predicates, attach corresponding | |
1474 | predicates to the CFG edges. */ | |
1475 | ||
1476 | static void | |
1477 | set_cond_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1478 | class ipa_fn_summary *summary, |
40a777e8 | 1479 | class ipa_node_params *params_summary, |
27d020cf JH |
1480 | basic_block bb) |
1481 | { | |
1482 | gimple *last; | |
4307a485 | 1483 | tree op, op2; |
27d020cf | 1484 | int index; |
27d020cf JH |
1485 | struct agg_position_info aggpos; |
1486 | enum tree_code code, inverted_code; | |
1487 | edge e; | |
1488 | edge_iterator ei; | |
1489 | gimple *set_stmt; | |
4307a485 FX |
1490 | tree param_type; |
1491 | expr_eval_ops param_ops; | |
27d020cf JH |
1492 | |
1493 | last = last_stmt (bb); | |
1494 | if (!last || gimple_code (last) != GIMPLE_COND) | |
1495 | return; | |
1496 | if (!is_gimple_ip_invariant (gimple_cond_rhs (last))) | |
1497 | return; | |
1498 | op = gimple_cond_lhs (last); | |
4307a485 FX |
1499 | |
1500 | if (decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, | |
1501 | ¶m_ops)) | |
27d020cf JH |
1502 | { |
1503 | code = gimple_cond_code (last); | |
1504 | inverted_code = invert_tree_comparison (code, HONOR_NANS (op)); | |
1505 | ||
1506 | FOR_EACH_EDGE (e, ei, bb->succs) | |
1507 | { | |
1508 | enum tree_code this_code = (e->flags & EDGE_TRUE_VALUE | |
1509 | ? code : inverted_code); | |
1510 | /* invert_tree_comparison will return ERROR_MARK on FP | |
956d615d | 1511 | comparisons that are not EQ/NE instead of returning proper |
efe12656 FX |
1512 | unordered one. Be sure it is not confused with NON_CONSTANT. |
1513 | ||
1514 | And if the edge's target is the final block of diamond CFG graph | |
1515 | of this conditional statement, we do not need to compute | |
1516 | predicate for the edge because the final block's predicate must | |
1517 | be at least as that of the first block of the statement. */ | |
1518 | if (this_code != ERROR_MARK | |
1519 | && !dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
27d020cf JH |
1520 | { |
1521 | predicate p | |
40a777e8 JH |
1522 | = add_condition (summary, params_summary, index, |
1523 | param_type, &aggpos, | |
4307a485 | 1524 | this_code, gimple_cond_rhs (last), param_ops); |
27d020cf JH |
1525 | e->aux = edge_predicate_pool.allocate (); |
1526 | *(predicate *) e->aux = p; | |
1527 | } | |
1528 | } | |
4307a485 | 1529 | vec_free (param_ops); |
27d020cf JH |
1530 | } |
1531 | ||
1532 | if (TREE_CODE (op) != SSA_NAME) | |
1533 | return; | |
1534 | /* Special case | |
1535 | if (builtin_constant_p (op)) | |
1536 | constant_code | |
1537 | else | |
1538 | nonconstant_code. | |
1539 | Here we can predicate nonconstant_code. We can't | |
1540 | really handle constant_code since we have no predicate | |
1541 | for this and also the constant code is not known to be | |
956d615d | 1542 | optimized away when inliner doesn't see operand is constant. |
27d020cf JH |
1543 | Other optimizers might think otherwise. */ |
1544 | if (gimple_cond_code (last) != NE_EXPR | |
1545 | || !integer_zerop (gimple_cond_rhs (last))) | |
1546 | return; | |
1547 | set_stmt = SSA_NAME_DEF_STMT (op); | |
1548 | if (!gimple_call_builtin_p (set_stmt, BUILT_IN_CONSTANT_P) | |
1549 | || gimple_call_num_args (set_stmt) != 1) | |
1550 | return; | |
1551 | op2 = gimple_call_arg (set_stmt, 0); | |
4307a485 | 1552 | if (!decompose_param_expr (fbi, set_stmt, op2, &index, ¶m_type, &aggpos)) |
27d020cf JH |
1553 | return; |
1554 | FOR_EACH_EDGE (e, ei, bb->succs) if (e->flags & EDGE_FALSE_VALUE) | |
1555 | { | |
40a777e8 JH |
1556 | predicate p = add_condition (summary, params_summary, index, |
1557 | param_type, &aggpos, | |
27d020cf JH |
1558 | predicate::is_not_constant, NULL_TREE); |
1559 | e->aux = edge_predicate_pool.allocate (); | |
1560 | *(predicate *) e->aux = p; | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | ||
1565 | /* If BB ends by a switch we can turn into predicates, attach corresponding | |
1566 | predicates to the CFG edges. */ | |
1567 | ||
1568 | static void | |
1569 | set_switch_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1570 | class ipa_fn_summary *summary, |
40a777e8 | 1571 | class ipa_node_params *params_summary, |
27d020cf JH |
1572 | basic_block bb) |
1573 | { | |
1574 | gimple *lastg; | |
1575 | tree op; | |
1576 | int index; | |
27d020cf JH |
1577 | struct agg_position_info aggpos; |
1578 | edge e; | |
1579 | edge_iterator ei; | |
1580 | size_t n; | |
1581 | size_t case_idx; | |
4307a485 FX |
1582 | tree param_type; |
1583 | expr_eval_ops param_ops; | |
27d020cf JH |
1584 | |
1585 | lastg = last_stmt (bb); | |
1586 | if (!lastg || gimple_code (lastg) != GIMPLE_SWITCH) | |
1587 | return; | |
1588 | gswitch *last = as_a <gswitch *> (lastg); | |
1589 | op = gimple_switch_index (last); | |
4307a485 FX |
1590 | if (!decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, |
1591 | ¶m_ops)) | |
27d020cf JH |
1592 | return; |
1593 | ||
351e7c3b FX |
1594 | auto_vec<std::pair<tree, tree> > ranges; |
1595 | tree type = TREE_TYPE (op); | |
fdfd7f53 ML |
1596 | int bound_limit = opt_for_fn (fbi->node->decl, |
1597 | param_ipa_max_switch_predicate_bounds); | |
351e7c3b FX |
1598 | int bound_count = 0; |
1599 | wide_int vr_wmin, vr_wmax; | |
1600 | value_range_kind vr_type = get_range_info (op, &vr_wmin, &vr_wmax); | |
1601 | ||
27d020cf JH |
1602 | FOR_EACH_EDGE (e, ei, bb->succs) |
1603 | { | |
1604 | e->aux = edge_predicate_pool.allocate (); | |
1605 | *(predicate *) e->aux = false; | |
1606 | } | |
351e7c3b | 1607 | |
efe12656 FX |
1608 | e = gimple_switch_edge (cfun, last, 0); |
1609 | /* Set BOUND_COUNT to maximum count to bypass computing predicate for | |
1610 | default case if its target basic block is in convergence point of all | |
1611 | switch cases, which can be determined by checking whether it | |
1612 | post-dominates the switch statement. */ | |
1613 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1614 | bound_count = INT_MAX; | |
1615 | ||
27d020cf | 1616 | n = gimple_switch_num_labels (last); |
351e7c3b | 1617 | for (case_idx = 1; case_idx < n; ++case_idx) |
27d020cf JH |
1618 | { |
1619 | tree cl = gimple_switch_label (last, case_idx); | |
efe12656 FX |
1620 | tree min = CASE_LOW (cl); |
1621 | tree max = CASE_HIGH (cl); | |
27d020cf JH |
1622 | predicate p; |
1623 | ||
4307a485 FX |
1624 | e = gimple_switch_edge (cfun, last, case_idx); |
1625 | ||
efe12656 FX |
1626 | /* The case value might not have same type as switch expression, |
1627 | extend the value based on the expression type. */ | |
1628 | if (TREE_TYPE (min) != type) | |
1629 | min = wide_int_to_tree (type, wi::to_wide (min)); | |
27d020cf | 1630 | |
351e7c3b | 1631 | if (!max) |
efe12656 FX |
1632 | max = min; |
1633 | else if (TREE_TYPE (max) != type) | |
1634 | max = wide_int_to_tree (type, wi::to_wide (max)); | |
1635 | ||
1636 | /* The case's target basic block is in convergence point of all switch | |
1637 | cases, its predicate should be at least as that of the switch | |
1638 | statement. */ | |
1639 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1640 | p = true; | |
1641 | else if (min == max) | |
40a777e8 JH |
1642 | p = add_condition (summary, params_summary, index, param_type, |
1643 | &aggpos, EQ_EXPR, min, param_ops); | |
27d020cf JH |
1644 | else |
1645 | { | |
1646 | predicate p1, p2; | |
40a777e8 JH |
1647 | p1 = add_condition (summary, params_summary, index, param_type, |
1648 | &aggpos, GE_EXPR, min, param_ops); | |
1649 | p2 = add_condition (summary, params_summary,index, param_type, | |
1650 | &aggpos, LE_EXPR, max, param_ops); | |
27d020cf JH |
1651 | p = p1 & p2; |
1652 | } | |
99b1c316 MS |
1653 | *(class predicate *) e->aux |
1654 | = p.or_with (summary->conds, *(class predicate *) e->aux); | |
351e7c3b FX |
1655 | |
1656 | /* If there are too many disjoint case ranges, predicate for default | |
1657 | case might become too complicated. So add a limit here. */ | |
1658 | if (bound_count > bound_limit) | |
1659 | continue; | |
1660 | ||
1661 | bool new_range = true; | |
1662 | ||
1663 | if (!ranges.is_empty ()) | |
1664 | { | |
1665 | wide_int curr_wmin = wi::to_wide (min); | |
1666 | wide_int last_wmax = wi::to_wide (ranges.last ().second); | |
1667 | ||
1668 | /* Merge case ranges if they are continuous. */ | |
1669 | if (curr_wmin == last_wmax + 1) | |
1670 | new_range = false; | |
1671 | else if (vr_type == VR_ANTI_RANGE) | |
1672 | { | |
1673 | /* If two disjoint case ranges can be connected by anti-range | |
1674 | of switch index, combine them to one range. */ | |
1675 | if (wi::lt_p (vr_wmax, curr_wmin - 1, TYPE_SIGN (type))) | |
1676 | vr_type = VR_UNDEFINED; | |
1677 | else if (wi::le_p (vr_wmin, last_wmax + 1, TYPE_SIGN (type))) | |
1678 | new_range = false; | |
1679 | } | |
1680 | } | |
1681 | ||
351e7c3b FX |
1682 | /* Create/extend a case range. And we count endpoints of range set, |
1683 | this number nearly equals to number of conditions that we will create | |
1684 | for predicate of default case. */ | |
1685 | if (new_range) | |
1686 | { | |
1687 | bound_count += (min == max) ? 1 : 2; | |
1688 | ranges.safe_push (std::make_pair (min, max)); | |
1689 | } | |
1690 | else | |
1691 | { | |
1692 | bound_count += (ranges.last ().first == ranges.last ().second); | |
1693 | ranges.last ().second = max; | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | e = gimple_switch_edge (cfun, last, 0); | |
1698 | if (bound_count > bound_limit) | |
1699 | { | |
1700 | *(class predicate *) e->aux = true; | |
4307a485 | 1701 | vec_free (param_ops); |
351e7c3b | 1702 | return; |
27d020cf | 1703 | } |
351e7c3b FX |
1704 | |
1705 | predicate p_seg = true; | |
1706 | predicate p_all = false; | |
1707 | ||
1708 | if (vr_type != VR_RANGE) | |
1709 | { | |
1710 | vr_wmin = wi::to_wide (TYPE_MIN_VALUE (type)); | |
1711 | vr_wmax = wi::to_wide (TYPE_MAX_VALUE (type)); | |
1712 | } | |
1713 | ||
1714 | /* Construct predicate to represent default range set that is negation of | |
1715 | all case ranges. Case range is classified as containing single/non-single | |
1716 | values. Suppose a piece of case ranges in the following. | |
1717 | ||
1718 | [D1...D2] [S1] ... [Sn] [D3...D4] | |
1719 | ||
1720 | To represent default case's range sets between two non-single value | |
1721 | case ranges (From D2 to D3), we construct predicate as: | |
1722 | ||
1723 | D2 < x < D3 && x != S1 && ... && x != Sn | |
1724 | */ | |
1725 | for (size_t i = 0; i < ranges.length (); i++) | |
1726 | { | |
1727 | tree min = ranges[i].first; | |
1728 | tree max = ranges[i].second; | |
1729 | ||
1730 | if (min == max) | |
40a777e8 JH |
1731 | p_seg &= add_condition (summary, params_summary, index, |
1732 | param_type, &aggpos, NE_EXPR, | |
4307a485 | 1733 | min, param_ops); |
351e7c3b FX |
1734 | else |
1735 | { | |
1736 | /* Do not create sub-predicate for range that is beyond low bound | |
1737 | of switch index. */ | |
1738 | if (wi::lt_p (vr_wmin, wi::to_wide (min), TYPE_SIGN (type))) | |
1739 | { | |
40a777e8 JH |
1740 | p_seg &= add_condition (summary, params_summary, index, |
1741 | param_type, &aggpos, | |
4307a485 | 1742 | LT_EXPR, min, param_ops); |
351e7c3b FX |
1743 | p_all = p_all.or_with (summary->conds, p_seg); |
1744 | } | |
1745 | ||
1746 | /* Do not create sub-predicate for range that is beyond up bound | |
1747 | of switch index. */ | |
1748 | if (wi::le_p (vr_wmax, wi::to_wide (max), TYPE_SIGN (type))) | |
1749 | { | |
1750 | p_seg = false; | |
1751 | break; | |
1752 | } | |
1753 | ||
40a777e8 JH |
1754 | p_seg = add_condition (summary, params_summary, index, |
1755 | param_type, &aggpos, GT_EXPR, | |
4307a485 | 1756 | max, param_ops); |
351e7c3b FX |
1757 | } |
1758 | } | |
1759 | ||
1760 | p_all = p_all.or_with (summary->conds, p_seg); | |
1761 | *(class predicate *) e->aux | |
1762 | = p_all.or_with (summary->conds, *(class predicate *) e->aux); | |
4307a485 FX |
1763 | |
1764 | vec_free (param_ops); | |
27d020cf JH |
1765 | } |
1766 | ||
1767 | ||
1768 | /* For each BB in NODE attach to its AUX pointer predicate under | |
1769 | which it is executable. */ | |
1770 | ||
1771 | static void | |
1772 | compute_bb_predicates (struct ipa_func_body_info *fbi, | |
1773 | struct cgraph_node *node, | |
40a777e8 JH |
1774 | class ipa_fn_summary *summary, |
1775 | class ipa_node_params *params_summary) | |
27d020cf JH |
1776 | { |
1777 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
1778 | bool done = false; | |
1779 | basic_block bb; | |
1780 | ||
1781 | FOR_EACH_BB_FN (bb, my_function) | |
1782 | { | |
40a777e8 JH |
1783 | set_cond_stmt_execution_predicate (fbi, summary, params_summary, bb); |
1784 | set_switch_stmt_execution_predicate (fbi, summary, params_summary, bb); | |
27d020cf JH |
1785 | } |
1786 | ||
1787 | /* Entry block is always executable. */ | |
1788 | ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux | |
1789 | = edge_predicate_pool.allocate (); | |
1790 | *(predicate *) ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux = true; | |
1791 | ||
1792 | /* A simple dataflow propagation of predicates forward in the CFG. | |
1793 | TODO: work in reverse postorder. */ | |
1794 | while (!done) | |
1795 | { | |
1796 | done = true; | |
1797 | FOR_EACH_BB_FN (bb, my_function) | |
1798 | { | |
1799 | predicate p = false; | |
1800 | edge e; | |
1801 | edge_iterator ei; | |
1802 | FOR_EACH_EDGE (e, ei, bb->preds) | |
1803 | { | |
1804 | if (e->src->aux) | |
1805 | { | |
1806 | predicate this_bb_predicate | |
1807 | = *(predicate *) e->src->aux; | |
1808 | if (e->aux) | |
99b1c316 | 1809 | this_bb_predicate &= (*(class predicate *) e->aux); |
27d020cf JH |
1810 | p = p.or_with (summary->conds, this_bb_predicate); |
1811 | if (p == true) | |
1812 | break; | |
1813 | } | |
1814 | } | |
efe12656 | 1815 | if (p != false) |
27d020cf | 1816 | { |
efe12656 FX |
1817 | basic_block pdom_bb; |
1818 | ||
27d020cf JH |
1819 | if (!bb->aux) |
1820 | { | |
1821 | done = false; | |
1822 | bb->aux = edge_predicate_pool.allocate (); | |
1823 | *((predicate *) bb->aux) = p; | |
1824 | } | |
1825 | else if (p != *(predicate *) bb->aux) | |
1826 | { | |
1827 | /* This OR operation is needed to ensure monotonous data flow | |
1828 | in the case we hit the limit on number of clauses and the | |
1829 | and/or operations above give approximate answers. */ | |
1830 | p = p.or_with (summary->conds, *(predicate *)bb->aux); | |
1831 | if (p != *(predicate *) bb->aux) | |
1832 | { | |
1833 | done = false; | |
1834 | *((predicate *) bb->aux) = p; | |
1835 | } | |
1836 | } | |
efe12656 FX |
1837 | |
1838 | /* For switch/if statement, we can OR-combine predicates of all | |
1839 | its cases/branches to get predicate for basic block in their | |
1840 | convergence point, but sometimes this will generate very | |
1841 | complicated predicate. Actually, we can get simplified | |
1842 | predicate in another way by using the fact that predicate | |
1843 | for a basic block must also hold true for its post dominators. | |
1844 | To be specific, basic block in convergence point of | |
1845 | conditional statement should include predicate of the | |
1846 | statement. */ | |
1847 | pdom_bb = get_immediate_dominator (CDI_POST_DOMINATORS, bb); | |
1848 | if (pdom_bb == EXIT_BLOCK_PTR_FOR_FN (my_function) || !pdom_bb) | |
1849 | ; | |
1850 | else if (!pdom_bb->aux) | |
1851 | { | |
1852 | done = false; | |
1853 | pdom_bb->aux = edge_predicate_pool.allocate (); | |
1854 | *((predicate *) pdom_bb->aux) = p; | |
1855 | } | |
1856 | else if (p != *(predicate *) pdom_bb->aux) | |
1857 | { | |
1858 | p = p.or_with (summary->conds, *(predicate *)pdom_bb->aux); | |
1859 | if (p != *(predicate *) pdom_bb->aux) | |
1860 | { | |
1861 | done = false; | |
1862 | *((predicate *) pdom_bb->aux) = p; | |
1863 | } | |
1864 | } | |
27d020cf JH |
1865 | } |
1866 | } | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | ||
1871 | /* Return predicate specifying when the STMT might have result that is not | |
1872 | a compile time constant. */ | |
1873 | ||
1874 | static predicate | |
c628d1c3 | 1875 | will_be_nonconstant_expr_predicate (ipa_func_body_info *fbi, |
99b1c316 | 1876 | class ipa_fn_summary *summary, |
40a777e8 | 1877 | class ipa_node_params *params_summary, |
27d020cf JH |
1878 | tree expr, |
1879 | vec<predicate> nonconstant_names) | |
1880 | { | |
1881 | tree parm; | |
1882 | int index; | |
27d020cf JH |
1883 | |
1884 | while (UNARY_CLASS_P (expr)) | |
1885 | expr = TREE_OPERAND (expr, 0); | |
1886 | ||
4307a485 | 1887 | parm = unmodified_parm (fbi, NULL, expr, NULL); |
c628d1c3 | 1888 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) |
40a777e8 | 1889 | return add_condition (summary, params_summary, index, TREE_TYPE (parm), NULL, |
4307a485 | 1890 | predicate::changed, NULL_TREE); |
27d020cf JH |
1891 | if (is_gimple_min_invariant (expr)) |
1892 | return false; | |
1893 | if (TREE_CODE (expr) == SSA_NAME) | |
1894 | return nonconstant_names[SSA_NAME_VERSION (expr)]; | |
1895 | if (BINARY_CLASS_P (expr) || COMPARISON_CLASS_P (expr)) | |
1896 | { | |
c628d1c3 MJ |
1897 | predicate p1 |
1898 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1899 | params_summary, |
c628d1c3 MJ |
1900 | TREE_OPERAND (expr, 0), |
1901 | nonconstant_names); | |
27d020cf JH |
1902 | if (p1 == true) |
1903 | return p1; | |
1904 | ||
c628d1c3 MJ |
1905 | predicate p2 |
1906 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1907 | params_summary, |
c628d1c3 MJ |
1908 | TREE_OPERAND (expr, 1), |
1909 | nonconstant_names); | |
27d020cf JH |
1910 | return p1.or_with (summary->conds, p2); |
1911 | } | |
1912 | else if (TREE_CODE (expr) == COND_EXPR) | |
1913 | { | |
c628d1c3 MJ |
1914 | predicate p1 |
1915 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1916 | params_summary, |
c628d1c3 MJ |
1917 | TREE_OPERAND (expr, 0), |
1918 | nonconstant_names); | |
27d020cf JH |
1919 | if (p1 == true) |
1920 | return p1; | |
1921 | ||
c628d1c3 MJ |
1922 | predicate p2 |
1923 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1924 | params_summary, |
c628d1c3 MJ |
1925 | TREE_OPERAND (expr, 1), |
1926 | nonconstant_names); | |
27d020cf JH |
1927 | if (p2 == true) |
1928 | return p2; | |
1929 | p1 = p1.or_with (summary->conds, p2); | |
c628d1c3 | 1930 | p2 = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 1931 | params_summary, |
27d020cf JH |
1932 | TREE_OPERAND (expr, 2), |
1933 | nonconstant_names); | |
1934 | return p2.or_with (summary->conds, p1); | |
1935 | } | |
5126ae0c KV |
1936 | else if (TREE_CODE (expr) == CALL_EXPR) |
1937 | return true; | |
27d020cf JH |
1938 | else |
1939 | { | |
1940 | debug_tree (expr); | |
1941 | gcc_unreachable (); | |
1942 | } | |
1943 | return false; | |
1944 | } | |
1945 | ||
1946 | ||
1947 | /* Return predicate specifying when the STMT might have result that is not | |
1948 | a compile time constant. */ | |
1949 | ||
1950 | static predicate | |
1951 | will_be_nonconstant_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1952 | class ipa_fn_summary *summary, |
40a777e8 | 1953 | class ipa_node_params *params_summary, |
27d020cf JH |
1954 | gimple *stmt, |
1955 | vec<predicate> nonconstant_names) | |
1956 | { | |
1957 | predicate p = true; | |
1958 | ssa_op_iter iter; | |
1959 | tree use; | |
4307a485 | 1960 | tree param_type = NULL_TREE; |
27d020cf JH |
1961 | predicate op_non_const; |
1962 | bool is_load; | |
1963 | int base_index; | |
27d020cf JH |
1964 | struct agg_position_info aggpos; |
1965 | ||
956d615d | 1966 | /* What statements might be optimized away |
27d020cf JH |
1967 | when their arguments are constant. */ |
1968 | if (gimple_code (stmt) != GIMPLE_ASSIGN | |
1969 | && gimple_code (stmt) != GIMPLE_COND | |
1970 | && gimple_code (stmt) != GIMPLE_SWITCH | |
1971 | && (gimple_code (stmt) != GIMPLE_CALL | |
1972 | || !(gimple_call_flags (stmt) & ECF_CONST))) | |
1973 | return p; | |
1974 | ||
1975 | /* Stores will stay anyway. */ | |
1976 | if (gimple_store_p (stmt)) | |
1977 | return p; | |
1978 | ||
1979 | is_load = gimple_assign_load_p (stmt); | |
1980 | ||
1981 | /* Loads can be optimized when the value is known. */ | |
1982 | if (is_load) | |
1983 | { | |
4307a485 FX |
1984 | tree op = gimple_assign_rhs1 (stmt); |
1985 | if (!decompose_param_expr (fbi, stmt, op, &base_index, ¶m_type, | |
1986 | &aggpos)) | |
27d020cf JH |
1987 | return p; |
1988 | } | |
1989 | else | |
1990 | base_index = -1; | |
1991 | ||
1992 | /* See if we understand all operands before we start | |
1993 | adding conditionals. */ | |
1994 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
1995 | { | |
c628d1c3 | 1996 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
1997 | /* For arguments we can build a condition. */ |
1998 | if (parm && ipa_get_param_decl_index (fbi->info, parm) >= 0) | |
1999 | continue; | |
2000 | if (TREE_CODE (use) != SSA_NAME) | |
2001 | return p; | |
2002 | /* If we know when operand is constant, | |
2003 | we still can say something useful. */ | |
2004 | if (nonconstant_names[SSA_NAME_VERSION (use)] != true) | |
2005 | continue; | |
2006 | return p; | |
2007 | } | |
2008 | ||
2009 | if (is_load) | |
2010 | op_non_const = | |
40a777e8 JH |
2011 | add_condition (summary, params_summary, |
2012 | base_index, param_type, &aggpos, | |
4307a485 | 2013 | predicate::changed, NULL_TREE); |
27d020cf JH |
2014 | else |
2015 | op_non_const = false; | |
2016 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
2017 | { | |
4307a485 | 2018 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
2019 | int index; |
2020 | ||
2021 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) | |
2022 | { | |
2023 | if (index != base_index) | |
40a777e8 JH |
2024 | p = add_condition (summary, params_summary, index, |
2025 | TREE_TYPE (parm), NULL, | |
4307a485 | 2026 | predicate::changed, NULL_TREE); |
27d020cf JH |
2027 | else |
2028 | continue; | |
2029 | } | |
2030 | else | |
2031 | p = nonconstant_names[SSA_NAME_VERSION (use)]; | |
2032 | op_non_const = p.or_with (summary->conds, op_non_const); | |
2033 | } | |
2034 | if ((gimple_code (stmt) == GIMPLE_ASSIGN || gimple_code (stmt) == GIMPLE_CALL) | |
2035 | && gimple_op (stmt, 0) | |
2036 | && TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME) | |
2037 | nonconstant_names[SSA_NAME_VERSION (gimple_op (stmt, 0))] | |
2038 | = op_non_const; | |
2039 | return op_non_const; | |
2040 | } | |
2041 | ||
2042 | struct record_modified_bb_info | |
2043 | { | |
3b2a6901 | 2044 | tree op; |
27d020cf JH |
2045 | bitmap bb_set; |
2046 | gimple *stmt; | |
2047 | }; | |
2048 | ||
956d615d | 2049 | /* Value is initialized in INIT_BB and used in USE_BB. We want to compute |
27d020cf | 2050 | probability how often it changes between USE_BB. |
3b2a6901 | 2051 | INIT_BB->count/USE_BB->count is an estimate, but if INIT_BB |
27d020cf JH |
2052 | is in different loop nest, we can do better. |
2053 | This is all just estimate. In theory we look for minimal cut separating | |
2054 | INIT_BB and USE_BB, but we only want to anticipate loop invariant motion | |
2055 | anyway. */ | |
2056 | ||
2057 | static basic_block | |
2058 | get_minimal_bb (basic_block init_bb, basic_block use_bb) | |
2059 | { | |
99b1c316 | 2060 | class loop *l = find_common_loop (init_bb->loop_father, use_bb->loop_father); |
e7a74006 | 2061 | if (l && l->header->count < init_bb->count) |
27d020cf JH |
2062 | return l->header; |
2063 | return init_bb; | |
2064 | } | |
2065 | ||
2066 | /* Callback of walk_aliased_vdefs. Records basic blocks where the value may be | |
2067 | set except for info->stmt. */ | |
2068 | ||
2069 | static bool | |
2070 | record_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef, void *data) | |
2071 | { | |
2072 | struct record_modified_bb_info *info = | |
2073 | (struct record_modified_bb_info *) data; | |
2074 | if (SSA_NAME_DEF_STMT (vdef) == info->stmt) | |
2075 | return false; | |
3b2a6901 JH |
2076 | if (gimple_clobber_p (SSA_NAME_DEF_STMT (vdef))) |
2077 | return false; | |
27d020cf JH |
2078 | bitmap_set_bit (info->bb_set, |
2079 | SSA_NAME_IS_DEFAULT_DEF (vdef) | |
2080 | ? ENTRY_BLOCK_PTR_FOR_FN (cfun)->index | |
2081 | : get_minimal_bb | |
2082 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2083 | gimple_bb (info->stmt))->index); | |
3b2a6901 JH |
2084 | if (dump_file) |
2085 | { | |
2086 | fprintf (dump_file, " Param "); | |
2087 | print_generic_expr (dump_file, info->op, TDF_SLIM); | |
2088 | fprintf (dump_file, " changed at bb %i, minimal: %i stmt: ", | |
2089 | gimple_bb (SSA_NAME_DEF_STMT (vdef))->index, | |
2090 | get_minimal_bb | |
2091 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2092 | gimple_bb (info->stmt))->index); | |
2093 | print_gimple_stmt (dump_file, SSA_NAME_DEF_STMT (vdef), 0); | |
2094 | } | |
27d020cf JH |
2095 | return false; |
2096 | } | |
2097 | ||
2098 | /* Return probability (based on REG_BR_PROB_BASE) that I-th parameter of STMT | |
2099 | will change since last invocation of STMT. | |
2100 | ||
2101 | Value 0 is reserved for compile time invariants. | |
2102 | For common parameters it is REG_BR_PROB_BASE. For loop invariants it | |
2103 | ought to be REG_BR_PROB_BASE / estimated_iters. */ | |
2104 | ||
2105 | static int | |
c628d1c3 | 2106 | param_change_prob (ipa_func_body_info *fbi, gimple *stmt, int i) |
27d020cf JH |
2107 | { |
2108 | tree op = gimple_call_arg (stmt, i); | |
2109 | basic_block bb = gimple_bb (stmt); | |
2110 | ||
2111 | if (TREE_CODE (op) == WITH_SIZE_EXPR) | |
2112 | op = TREE_OPERAND (op, 0); | |
2113 | ||
2114 | tree base = get_base_address (op); | |
2115 | ||
2116 | /* Global invariants never change. */ | |
2117 | if (is_gimple_min_invariant (base)) | |
2118 | return 0; | |
2119 | ||
2120 | /* We would have to do non-trivial analysis to really work out what | |
2121 | is the probability of value to change (i.e. when init statement | |
2122 | is in a sibling loop of the call). | |
2123 | ||
2124 | We do an conservative estimate: when call is executed N times more often | |
2125 | than the statement defining value, we take the frequency 1/N. */ | |
2126 | if (TREE_CODE (base) == SSA_NAME) | |
2127 | { | |
3b2a6901 | 2128 | profile_count init_count; |
27d020cf | 2129 | |
3b2a6901 | 2130 | if (!bb->count.nonzero_p ()) |
27d020cf JH |
2131 | return REG_BR_PROB_BASE; |
2132 | ||
2133 | if (SSA_NAME_IS_DEFAULT_DEF (base)) | |
3b2a6901 | 2134 | init_count = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2135 | else |
3b2a6901 | 2136 | init_count = get_minimal_bb |
27d020cf | 2137 | (gimple_bb (SSA_NAME_DEF_STMT (base)), |
3b2a6901 | 2138 | gimple_bb (stmt))->count; |
27d020cf | 2139 | |
3b2a6901 JH |
2140 | if (init_count < bb->count) |
2141 | return MAX ((init_count.to_sreal_scale (bb->count) | |
2142 | * REG_BR_PROB_BASE).to_int (), 1); | |
2143 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2144 | } |
2145 | else | |
2146 | { | |
2147 | ao_ref refd; | |
3b2a6901 | 2148 | profile_count max = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2149 | struct record_modified_bb_info info; |
27d020cf JH |
2150 | tree init = ctor_for_folding (base); |
2151 | ||
2152 | if (init != error_mark_node) | |
2153 | return 0; | |
3b2a6901 | 2154 | if (!bb->count.nonzero_p ()) |
27d020cf | 2155 | return REG_BR_PROB_BASE; |
3b2a6901 JH |
2156 | if (dump_file) |
2157 | { | |
4307a485 | 2158 | fprintf (dump_file, " Analyzing param change probability of "); |
3b2a6901 JH |
2159 | print_generic_expr (dump_file, op, TDF_SLIM); |
2160 | fprintf (dump_file, "\n"); | |
2161 | } | |
27d020cf | 2162 | ao_ref_init (&refd, op); |
3b2a6901 | 2163 | info.op = op; |
27d020cf JH |
2164 | info.stmt = stmt; |
2165 | info.bb_set = BITMAP_ALLOC (NULL); | |
c628d1c3 MJ |
2166 | int walked |
2167 | = walk_aliased_vdefs (&refd, gimple_vuse (stmt), record_modified, &info, | |
2168 | NULL, NULL, fbi->aa_walk_budget); | |
2169 | if (walked < 0 || bitmap_bit_p (info.bb_set, bb->index)) | |
27d020cf | 2170 | { |
3b2a6901 | 2171 | if (dump_file) |
c628d1c3 MJ |
2172 | { |
2173 | if (walked < 0) | |
2174 | fprintf (dump_file, " Ran out of AA walking budget.\n"); | |
2175 | else | |
2176 | fprintf (dump_file, " Set in same BB as used.\n"); | |
2177 | } | |
27d020cf JH |
2178 | BITMAP_FREE (info.bb_set); |
2179 | return REG_BR_PROB_BASE; | |
2180 | } | |
2181 | ||
3b2a6901 JH |
2182 | bitmap_iterator bi; |
2183 | unsigned index; | |
2184 | /* Lookup the most frequent update of the value and believe that | |
2185 | it dominates all the other; precise analysis here is difficult. */ | |
27d020cf | 2186 | EXECUTE_IF_SET_IN_BITMAP (info.bb_set, 0, index, bi) |
3b2a6901 JH |
2187 | max = max.max (BASIC_BLOCK_FOR_FN (cfun, index)->count); |
2188 | if (dump_file) | |
2189 | { | |
2190 | fprintf (dump_file, " Set with count "); | |
2191 | max.dump (dump_file); | |
2192 | fprintf (dump_file, " and used with count "); | |
2193 | bb->count.dump (dump_file); | |
2194 | fprintf (dump_file, " freq %f\n", | |
2195 | max.to_sreal_scale (bb->count).to_double ()); | |
2196 | } | |
27d020cf JH |
2197 | |
2198 | BITMAP_FREE (info.bb_set); | |
3b2a6901 JH |
2199 | if (max < bb->count) |
2200 | return MAX ((max.to_sreal_scale (bb->count) | |
2201 | * REG_BR_PROB_BASE).to_int (), 1); | |
2202 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2203 | } |
2204 | } | |
2205 | ||
2206 | /* Find whether a basic block BB is the final block of a (half) diamond CFG | |
2207 | sub-graph and if the predicate the condition depends on is known. If so, | |
2208 | return true and store the pointer the predicate in *P. */ | |
2209 | ||
2210 | static bool | |
c628d1c3 | 2211 | phi_result_unknown_predicate (ipa_func_body_info *fbi, |
40a777e8 JH |
2212 | ipa_fn_summary *summary, |
2213 | class ipa_node_params *params_summary, | |
2214 | basic_block bb, | |
27d020cf JH |
2215 | predicate *p, |
2216 | vec<predicate> nonconstant_names) | |
2217 | { | |
2218 | edge e; | |
2219 | edge_iterator ei; | |
2220 | basic_block first_bb = NULL; | |
2221 | gimple *stmt; | |
2222 | ||
2223 | if (single_pred_p (bb)) | |
2224 | { | |
2225 | *p = false; | |
2226 | return true; | |
2227 | } | |
2228 | ||
2229 | FOR_EACH_EDGE (e, ei, bb->preds) | |
2230 | { | |
2231 | if (single_succ_p (e->src)) | |
2232 | { | |
2233 | if (!single_pred_p (e->src)) | |
2234 | return false; | |
2235 | if (!first_bb) | |
2236 | first_bb = single_pred (e->src); | |
2237 | else if (single_pred (e->src) != first_bb) | |
2238 | return false; | |
2239 | } | |
2240 | else | |
2241 | { | |
2242 | if (!first_bb) | |
2243 | first_bb = e->src; | |
2244 | else if (e->src != first_bb) | |
2245 | return false; | |
2246 | } | |
2247 | } | |
2248 | ||
2249 | if (!first_bb) | |
2250 | return false; | |
2251 | ||
2252 | stmt = last_stmt (first_bb); | |
2253 | if (!stmt | |
2254 | || gimple_code (stmt) != GIMPLE_COND | |
2255 | || !is_gimple_ip_invariant (gimple_cond_rhs (stmt))) | |
2256 | return false; | |
2257 | ||
40a777e8 | 2258 | *p = will_be_nonconstant_expr_predicate (fbi, summary, params_summary, |
27d020cf JH |
2259 | gimple_cond_lhs (stmt), |
2260 | nonconstant_names); | |
2261 | if (*p == true) | |
2262 | return false; | |
2263 | else | |
2264 | return true; | |
2265 | } | |
2266 | ||
2267 | /* Given a PHI statement in a function described by inline properties SUMMARY | |
2268 | and *P being the predicate describing whether the selected PHI argument is | |
2269 | known, store a predicate for the result of the PHI statement into | |
2270 | NONCONSTANT_NAMES, if possible. */ | |
2271 | ||
2272 | static void | |
99b1c316 | 2273 | predicate_for_phi_result (class ipa_fn_summary *summary, gphi *phi, |
27d020cf JH |
2274 | predicate *p, |
2275 | vec<predicate> nonconstant_names) | |
2276 | { | |
2277 | unsigned i; | |
2278 | ||
2279 | for (i = 0; i < gimple_phi_num_args (phi); i++) | |
2280 | { | |
2281 | tree arg = gimple_phi_arg (phi, i)->def; | |
2282 | if (!is_gimple_min_invariant (arg)) | |
2283 | { | |
2284 | gcc_assert (TREE_CODE (arg) == SSA_NAME); | |
2285 | *p = p->or_with (summary->conds, | |
2286 | nonconstant_names[SSA_NAME_VERSION (arg)]); | |
2287 | if (*p == true) | |
2288 | return; | |
2289 | } | |
2290 | } | |
2291 | ||
2292 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2293 | { | |
2294 | fprintf (dump_file, "\t\tphi predicate: "); | |
2295 | p->dump (dump_file, summary->conds); | |
2296 | } | |
2297 | nonconstant_names[SSA_NAME_VERSION (gimple_phi_result (phi))] = *p; | |
2298 | } | |
2299 | ||
27d020cf JH |
2300 | /* For a typical usage of __builtin_expect (a<b, 1), we |
2301 | may introduce an extra relation stmt: | |
2302 | With the builtin, we have | |
2303 | t1 = a <= b; | |
2304 | t2 = (long int) t1; | |
2305 | t3 = __builtin_expect (t2, 1); | |
2306 | if (t3 != 0) | |
2307 | goto ... | |
2308 | Without the builtin, we have | |
2309 | if (a<=b) | |
2310 | goto... | |
2311 | This affects the size/time estimation and may have | |
2312 | an impact on the earlier inlining. | |
2313 | Here find this pattern and fix it up later. */ | |
2314 | ||
2315 | static gimple * | |
2316 | find_foldable_builtin_expect (basic_block bb) | |
2317 | { | |
2318 | gimple_stmt_iterator bsi; | |
2319 | ||
2320 | for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
2321 | { | |
2322 | gimple *stmt = gsi_stmt (bsi); | |
2323 | if (gimple_call_builtin_p (stmt, BUILT_IN_EXPECT) | |
1e9168b2 | 2324 | || gimple_call_builtin_p (stmt, BUILT_IN_EXPECT_WITH_PROBABILITY) |
27d020cf JH |
2325 | || gimple_call_internal_p (stmt, IFN_BUILTIN_EXPECT)) |
2326 | { | |
2327 | tree var = gimple_call_lhs (stmt); | |
2328 | tree arg = gimple_call_arg (stmt, 0); | |
2329 | use_operand_p use_p; | |
2330 | gimple *use_stmt; | |
2331 | bool match = false; | |
2332 | bool done = false; | |
2333 | ||
2334 | if (!var || !arg) | |
2335 | continue; | |
2336 | gcc_assert (TREE_CODE (var) == SSA_NAME); | |
2337 | ||
2338 | while (TREE_CODE (arg) == SSA_NAME) | |
2339 | { | |
2340 | gimple *stmt_tmp = SSA_NAME_DEF_STMT (arg); | |
2341 | if (!is_gimple_assign (stmt_tmp)) | |
2342 | break; | |
2343 | switch (gimple_assign_rhs_code (stmt_tmp)) | |
2344 | { | |
2345 | case LT_EXPR: | |
2346 | case LE_EXPR: | |
2347 | case GT_EXPR: | |
2348 | case GE_EXPR: | |
2349 | case EQ_EXPR: | |
2350 | case NE_EXPR: | |
2351 | match = true; | |
2352 | done = true; | |
2353 | break; | |
2354 | CASE_CONVERT: | |
2355 | break; | |
2356 | default: | |
2357 | done = true; | |
2358 | break; | |
2359 | } | |
2360 | if (done) | |
2361 | break; | |
2362 | arg = gimple_assign_rhs1 (stmt_tmp); | |
2363 | } | |
2364 | ||
2365 | if (match && single_imm_use (var, &use_p, &use_stmt) | |
2366 | && gimple_code (use_stmt) == GIMPLE_COND) | |
2367 | return use_stmt; | |
2368 | } | |
2369 | } | |
2370 | return NULL; | |
2371 | } | |
2372 | ||
2373 | /* Return true when the basic blocks contains only clobbers followed by RESX. | |
2374 | Such BBs are kept around to make removal of dead stores possible with | |
2375 | presence of EH and will be optimized out by optimize_clobbers later in the | |
2376 | game. | |
2377 | ||
956d615d | 2378 | NEED_EH is used to recurse in case the clobber has non-EH predecessors |
27d020cf JH |
2379 | that can be clobber only, too.. When it is false, the RESX is not necessary |
2380 | on the end of basic block. */ | |
2381 | ||
2382 | static bool | |
2383 | clobber_only_eh_bb_p (basic_block bb, bool need_eh = true) | |
2384 | { | |
2385 | gimple_stmt_iterator gsi = gsi_last_bb (bb); | |
2386 | edge_iterator ei; | |
2387 | edge e; | |
2388 | ||
2389 | if (need_eh) | |
2390 | { | |
2391 | if (gsi_end_p (gsi)) | |
2392 | return false; | |
2393 | if (gimple_code (gsi_stmt (gsi)) != GIMPLE_RESX) | |
2394 | return false; | |
2395 | gsi_prev (&gsi); | |
2396 | } | |
2397 | else if (!single_succ_p (bb)) | |
2398 | return false; | |
2399 | ||
2400 | for (; !gsi_end_p (gsi); gsi_prev (&gsi)) | |
2401 | { | |
2402 | gimple *stmt = gsi_stmt (gsi); | |
2403 | if (is_gimple_debug (stmt)) | |
2404 | continue; | |
2405 | if (gimple_clobber_p (stmt)) | |
2406 | continue; | |
2407 | if (gimple_code (stmt) == GIMPLE_LABEL) | |
2408 | break; | |
2409 | return false; | |
2410 | } | |
2411 | ||
956d615d | 2412 | /* See if all predecessors are either throws or clobber only BBs. */ |
27d020cf JH |
2413 | FOR_EACH_EDGE (e, ei, bb->preds) |
2414 | if (!(e->flags & EDGE_EH) | |
2415 | && !clobber_only_eh_bb_p (e->src, false)) | |
2416 | return false; | |
2417 | ||
2418 | return true; | |
2419 | } | |
2420 | ||
2421 | /* Return true if STMT compute a floating point expression that may be affected | |
2422 | by -ffast-math and similar flags. */ | |
2423 | ||
2424 | static bool | |
2425 | fp_expression_p (gimple *stmt) | |
2426 | { | |
2427 | ssa_op_iter i; | |
2428 | tree op; | |
2429 | ||
2430 | FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_DEF|SSA_OP_USE) | |
2431 | if (FLOAT_TYPE_P (TREE_TYPE (op))) | |
2432 | return true; | |
2433 | return false; | |
2434 | } | |
2435 | ||
e977dd5e JH |
2436 | /* Return true if T references memory location that is local |
2437 | for the function (that means, dead after return) or read-only. */ | |
2438 | ||
2439 | bool | |
2440 | refs_local_or_readonly_memory_p (tree t) | |
2441 | { | |
2442 | /* Non-escaping memory is fine. */ | |
2443 | t = get_base_address (t); | |
2444 | if ((TREE_CODE (t) == MEM_REF | |
2445 | || TREE_CODE (t) == TARGET_MEM_REF)) | |
2446 | return points_to_local_or_readonly_memory_p (TREE_OPERAND (t, 0)); | |
2447 | ||
2448 | /* Automatic variables are fine. */ | |
2449 | if (DECL_P (t) | |
2450 | && auto_var_in_fn_p (t, current_function_decl)) | |
2451 | return true; | |
2452 | ||
2453 | /* Read-only variables are fine. */ | |
2454 | if (DECL_P (t) && TREE_READONLY (t)) | |
2455 | return true; | |
2456 | ||
2457 | return false; | |
2458 | } | |
2459 | ||
2460 | /* Return true if T is a pointer pointing to memory location that is local | |
2461 | for the function (that means, dead after return) or read-only. */ | |
2462 | ||
2463 | bool | |
2464 | points_to_local_or_readonly_memory_p (tree t) | |
2465 | { | |
2466 | /* See if memory location is clearly invalid. */ | |
2467 | if (integer_zerop (t)) | |
2468 | return flag_delete_null_pointer_checks; | |
2469 | if (TREE_CODE (t) == SSA_NAME) | |
2470 | return !ptr_deref_may_alias_global_p (t); | |
2471 | if (TREE_CODE (t) == ADDR_EXPR) | |
2472 | return refs_local_or_readonly_memory_p (TREE_OPERAND (t, 0)); | |
2473 | return false; | |
2474 | } | |
2475 | ||
2476 | ||
0bceb671 JH |
2477 | /* Analyze function body for NODE. |
2478 | EARLY indicates run from early optimization pipeline. */ | |
27d020cf JH |
2479 | |
2480 | static void | |
0bceb671 | 2481 | analyze_function_body (struct cgraph_node *node, bool early) |
27d020cf | 2482 | { |
9340d345 | 2483 | sreal time = opt_for_fn (node->decl, param_uninlined_function_time); |
27d020cf | 2484 | /* Estimate static overhead for function prologue/epilogue and alignment. */ |
9340d345 | 2485 | int size = opt_for_fn (node->decl, param_uninlined_function_insns); |
27d020cf JH |
2486 | /* Benefits are scaled by probability of elimination that is in range |
2487 | <0,2>. */ | |
2488 | basic_block bb; | |
2489 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
b71289b1 | 2490 | sreal freq; |
99b1c316 | 2491 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
40a777e8 | 2492 | class ipa_node_params *params_summary = early ? NULL : IPA_NODE_REF (node); |
27d020cf JH |
2493 | predicate bb_predicate; |
2494 | struct ipa_func_body_info fbi; | |
2495 | vec<predicate> nonconstant_names = vNULL; | |
2496 | int nblocks, n; | |
2497 | int *order; | |
27d020cf JH |
2498 | gimple *fix_builtin_expect_stmt; |
2499 | ||
2500 | gcc_assert (my_function && my_function->cfg); | |
2501 | gcc_assert (cfun == my_function); | |
2502 | ||
2503 | memset(&fbi, 0, sizeof(fbi)); | |
ddfb1317 | 2504 | vec_free (info->conds); |
27d020cf | 2505 | info->conds = NULL; |
ddfb1317 | 2506 | vec_free (info->size_time_table); |
27d020cf JH |
2507 | info->size_time_table = NULL; |
2508 | ||
2509 | /* When optimizing and analyzing for IPA inliner, initialize loop optimizer | |
2510 | so we can produce proper inline hints. | |
2511 | ||
2512 | When optimizing and analyzing for early inliner, initialize node params | |
2513 | so we can produce correct BB predicates. */ | |
2514 | ||
2515 | if (opt_for_fn (node->decl, optimize)) | |
2516 | { | |
2517 | calculate_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2518 | calculate_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2519 | if (!early) |
2520 | loop_optimizer_init (LOOPS_NORMAL | LOOPS_HAVE_RECORDED_EXITS); | |
2521 | else | |
2522 | { | |
2523 | ipa_check_create_node_params (); | |
2524 | ipa_initialize_node_params (node); | |
2525 | } | |
2526 | ||
2527 | if (ipa_node_params_sum) | |
2528 | { | |
2529 | fbi.node = node; | |
2530 | fbi.info = IPA_NODE_REF (node); | |
2531 | fbi.bb_infos = vNULL; | |
cb3874dc | 2532 | fbi.bb_infos.safe_grow_cleared (last_basic_block_for_fn (cfun), true); |
c628d1c3 | 2533 | fbi.param_count = count_formal_params (node->decl); |
fdfd7f53 | 2534 | fbi.aa_walk_budget = opt_for_fn (node->decl, param_ipa_max_aa_steps); |
c628d1c3 | 2535 | |
27d020cf | 2536 | nonconstant_names.safe_grow_cleared |
cb3874dc | 2537 | (SSANAMES (my_function)->length (), true); |
27d020cf JH |
2538 | } |
2539 | } | |
2540 | ||
2541 | if (dump_file) | |
2542 | fprintf (dump_file, "\nAnalyzing function body size: %s\n", | |
3629ff8a | 2543 | node->dump_name ()); |
27d020cf JH |
2544 | |
2545 | /* When we run into maximal number of entries, we assign everything to the | |
2546 | constant truth case. Be sure to have it in list. */ | |
2547 | bb_predicate = true; | |
2548 | info->account_size_time (0, 0, bb_predicate, bb_predicate); | |
2549 | ||
2550 | bb_predicate = predicate::not_inlined (); | |
9340d345 JH |
2551 | info->account_size_time (opt_for_fn (node->decl, |
2552 | param_uninlined_function_insns) | |
d06f73a3 | 2553 | * ipa_fn_summary::size_scale, |
9340d345 JH |
2554 | opt_for_fn (node->decl, |
2555 | param_uninlined_function_time), | |
d06f73a3 | 2556 | bb_predicate, |
27d020cf JH |
2557 | bb_predicate); |
2558 | ||
2559 | if (fbi.info) | |
40a777e8 | 2560 | compute_bb_predicates (&fbi, node, info, params_summary); |
27d020cf JH |
2561 | order = XNEWVEC (int, n_basic_blocks_for_fn (cfun)); |
2562 | nblocks = pre_and_rev_post_order_compute (NULL, order, false); | |
2563 | for (n = 0; n < nblocks; n++) | |
2564 | { | |
2565 | bb = BASIC_BLOCK_FOR_FN (cfun, order[n]); | |
b71289b1 | 2566 | freq = bb->count.to_sreal_scale (ENTRY_BLOCK_PTR_FOR_FN (cfun)->count); |
27d020cf JH |
2567 | if (clobber_only_eh_bb_p (bb)) |
2568 | { | |
2569 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2570 | fprintf (dump_file, "\n Ignoring BB %i;" | |
2571 | " it will be optimized away by cleanup_clobbers\n", | |
2572 | bb->index); | |
2573 | continue; | |
2574 | } | |
2575 | ||
2576 | /* TODO: Obviously predicates can be propagated down across CFG. */ | |
2577 | if (fbi.info) | |
2578 | { | |
2579 | if (bb->aux) | |
2580 | bb_predicate = *(predicate *) bb->aux; | |
2581 | else | |
2582 | bb_predicate = false; | |
2583 | } | |
2584 | else | |
2585 | bb_predicate = true; | |
2586 | ||
2587 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2588 | { | |
2589 | fprintf (dump_file, "\n BB %i predicate:", bb->index); | |
2590 | bb_predicate.dump (dump_file, info->conds); | |
2591 | } | |
2592 | ||
2593 | if (fbi.info && nonconstant_names.exists ()) | |
2594 | { | |
2595 | predicate phi_predicate; | |
2596 | bool first_phi = true; | |
2597 | ||
2598 | for (gphi_iterator bsi = gsi_start_phis (bb); !gsi_end_p (bsi); | |
2599 | gsi_next (&bsi)) | |
2600 | { | |
2601 | if (first_phi | |
40a777e8 JH |
2602 | && !phi_result_unknown_predicate (&fbi, info, |
2603 | params_summary, | |
2604 | bb, | |
27d020cf JH |
2605 | &phi_predicate, |
2606 | nonconstant_names)) | |
2607 | break; | |
2608 | first_phi = false; | |
2609 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2610 | { | |
2611 | fprintf (dump_file, " "); | |
2612 | print_gimple_stmt (dump_file, gsi_stmt (bsi), 0); | |
2613 | } | |
2614 | predicate_for_phi_result (info, bsi.phi (), &phi_predicate, | |
2615 | nonconstant_names); | |
2616 | } | |
2617 | } | |
2618 | ||
2619 | fix_builtin_expect_stmt = find_foldable_builtin_expect (bb); | |
2620 | ||
d3ed5b56 JH |
2621 | for (gimple_stmt_iterator bsi = gsi_start_nondebug_bb (bb); |
2622 | !gsi_end_p (bsi); gsi_next_nondebug (&bsi)) | |
27d020cf JH |
2623 | { |
2624 | gimple *stmt = gsi_stmt (bsi); | |
2625 | int this_size = estimate_num_insns (stmt, &eni_size_weights); | |
2626 | int this_time = estimate_num_insns (stmt, &eni_time_weights); | |
2627 | int prob; | |
2628 | predicate will_be_nonconstant; | |
2629 | ||
2630 | /* This relation stmt should be folded after we remove | |
956d615d | 2631 | __builtin_expect call. Adjust the cost here. */ |
27d020cf JH |
2632 | if (stmt == fix_builtin_expect_stmt) |
2633 | { | |
2634 | this_size--; | |
2635 | this_time--; | |
2636 | } | |
2637 | ||
2638 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2639 | { | |
2640 | fprintf (dump_file, " "); | |
2641 | print_gimple_stmt (dump_file, stmt, 0); | |
2642 | fprintf (dump_file, "\t\tfreq:%3.2f size:%3i time:%3i\n", | |
b71289b1 | 2643 | freq.to_double (), this_size, |
27d020cf JH |
2644 | this_time); |
2645 | } | |
2646 | ||
27d020cf JH |
2647 | if (is_gimple_call (stmt) |
2648 | && !gimple_call_internal_p (stmt)) | |
2649 | { | |
2650 | struct cgraph_edge *edge = node->get_edge (stmt); | |
99353fcf | 2651 | ipa_call_summary *es = ipa_call_summaries->get_create (edge); |
27d020cf JH |
2652 | |
2653 | /* Special case: results of BUILT_IN_CONSTANT_P will be always | |
2654 | resolved as constant. We however don't want to optimize | |
2655 | out the cgraph edges. */ | |
2656 | if (nonconstant_names.exists () | |
2657 | && gimple_call_builtin_p (stmt, BUILT_IN_CONSTANT_P) | |
2658 | && gimple_call_lhs (stmt) | |
2659 | && TREE_CODE (gimple_call_lhs (stmt)) == SSA_NAME) | |
2660 | { | |
2661 | predicate false_p = false; | |
2662 | nonconstant_names[SSA_NAME_VERSION (gimple_call_lhs (stmt))] | |
2663 | = false_p; | |
2664 | } | |
2665 | if (ipa_node_params_sum) | |
2666 | { | |
2667 | int count = gimple_call_num_args (stmt); | |
2668 | int i; | |
2669 | ||
2670 | if (count) | |
cb3874dc | 2671 | es->param.safe_grow_cleared (count, true); |
27d020cf JH |
2672 | for (i = 0; i < count; i++) |
2673 | { | |
c628d1c3 | 2674 | int prob = param_change_prob (&fbi, stmt, i); |
27d020cf JH |
2675 | gcc_assert (prob >= 0 && prob <= REG_BR_PROB_BASE); |
2676 | es->param[i].change_prob = prob; | |
b89e4559 JH |
2677 | es->param[i].points_to_local_or_readonly_memory |
2678 | = points_to_local_or_readonly_memory_p | |
2679 | (gimple_call_arg (stmt, i)); | |
27d020cf JH |
2680 | } |
2681 | } | |
2682 | ||
2683 | es->call_stmt_size = this_size; | |
2684 | es->call_stmt_time = this_time; | |
2685 | es->loop_depth = bb_loop_depth (bb); | |
2686 | edge_set_predicate (edge, &bb_predicate); | |
959b8c82 JH |
2687 | if (edge->speculative) |
2688 | { | |
845bb366 JH |
2689 | cgraph_edge *indirect |
2690 | = edge->speculative_call_indirect_edge (); | |
959b8c82 | 2691 | ipa_call_summary *es2 |
d380e329 | 2692 | = ipa_call_summaries->get_create (indirect); |
959b8c82 JH |
2693 | ipa_call_summaries->duplicate (edge, indirect, |
2694 | es, es2); | |
f1ba88b1 | 2695 | |
845bb366 JH |
2696 | /* Edge is the first direct call. |
2697 | create and duplicate call summaries for multiple | |
f1ba88b1 | 2698 | speculative call targets. */ |
845bb366 JH |
2699 | for (cgraph_edge *direct |
2700 | = edge->next_speculative_call_target (); | |
2701 | direct; | |
2702 | direct = direct->next_speculative_call_target ()) | |
2703 | { | |
2704 | ipa_call_summary *es3 | |
2705 | = ipa_call_summaries->get_create (direct); | |
2706 | ipa_call_summaries->duplicate (edge, direct, | |
2707 | es, es3); | |
2708 | } | |
959b8c82 | 2709 | } |
27d020cf JH |
2710 | } |
2711 | ||
956d615d | 2712 | /* TODO: When conditional jump or switch is known to be constant, but |
27d020cf JH |
2713 | we did not translate it into the predicates, we really can account |
2714 | just maximum of the possible paths. */ | |
2715 | if (fbi.info) | |
2716 | will_be_nonconstant | |
40a777e8 | 2717 | = will_be_nonconstant_predicate (&fbi, info, params_summary, |
27d020cf JH |
2718 | stmt, nonconstant_names); |
2719 | else | |
2720 | will_be_nonconstant = true; | |
2721 | if (this_time || this_size) | |
2722 | { | |
b71289b1 | 2723 | sreal final_time = (sreal)this_time * freq; |
27d020cf | 2724 | |
c628d1c3 | 2725 | prob = eliminated_by_inlining_prob (&fbi, stmt); |
27d020cf JH |
2726 | if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS)) |
2727 | fprintf (dump_file, | |
2728 | "\t\t50%% will be eliminated by inlining\n"); | |
2729 | if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS)) | |
2730 | fprintf (dump_file, "\t\tWill be eliminated by inlining\n"); | |
2731 | ||
99b1c316 | 2732 | class predicate p = bb_predicate & will_be_nonconstant; |
27d020cf JH |
2733 | |
2734 | /* We can ignore statement when we proved it is never going | |
67914693 | 2735 | to happen, but we cannot do that for call statements |
27d020cf JH |
2736 | because edges are accounted specially. */ |
2737 | ||
2738 | if (*(is_gimple_call (stmt) ? &bb_predicate : &p) != false) | |
2739 | { | |
b71289b1 | 2740 | time += final_time; |
27d020cf JH |
2741 | size += this_size; |
2742 | } | |
2743 | ||
2744 | /* We account everything but the calls. Calls have their own | |
2745 | size/time info attached to cgraph edges. This is necessary | |
2746 | in order to make the cost disappear after inlining. */ | |
2747 | if (!is_gimple_call (stmt)) | |
2748 | { | |
2749 | if (prob) | |
2750 | { | |
2751 | predicate ip = bb_predicate & predicate::not_inlined (); | |
2752 | info->account_size_time (this_size * prob, | |
121356b0 | 2753 | (final_time * prob) / 2, ip, |
27d020cf JH |
2754 | p); |
2755 | } | |
2756 | if (prob != 2) | |
2757 | info->account_size_time (this_size * (2 - prob), | |
121356b0 | 2758 | (final_time * (2 - prob) / 2), |
27d020cf JH |
2759 | bb_predicate, |
2760 | p); | |
2761 | } | |
2762 | ||
2763 | if (!info->fp_expressions && fp_expression_p (stmt)) | |
2764 | { | |
2765 | info->fp_expressions = true; | |
2766 | if (dump_file) | |
2767 | fprintf (dump_file, " fp_expression set\n"); | |
2768 | } | |
a20f263b | 2769 | } |
27d020cf | 2770 | |
a20f263b JH |
2771 | /* Account cost of address calculations in the statements. */ |
2772 | for (unsigned int i = 0; i < gimple_num_ops (stmt); i++) | |
2773 | { | |
2774 | for (tree op = gimple_op (stmt, i); | |
2775 | op && handled_component_p (op); | |
2776 | op = TREE_OPERAND (op, 0)) | |
2777 | if ((TREE_CODE (op) == ARRAY_REF | |
2778 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
2779 | && TREE_CODE (TREE_OPERAND (op, 1)) == SSA_NAME) | |
2780 | { | |
2781 | predicate p = bb_predicate; | |
2782 | if (fbi.info) | |
2783 | p = p & will_be_nonconstant_expr_predicate | |
40a777e8 JH |
2784 | (&fbi, info, params_summary, |
2785 | TREE_OPERAND (op, 1), | |
a20f263b JH |
2786 | nonconstant_names); |
2787 | if (p != false) | |
2788 | { | |
2789 | time += freq; | |
2790 | size += 1; | |
2791 | if (dump_file) | |
2792 | fprintf (dump_file, | |
2793 | "\t\tAccounting address calculation.\n"); | |
2794 | info->account_size_time (ipa_fn_summary::size_scale, | |
2795 | freq, | |
2796 | bb_predicate, | |
2797 | p); | |
2798 | } | |
2799 | } | |
27d020cf | 2800 | } |
a20f263b | 2801 | |
27d020cf JH |
2802 | } |
2803 | } | |
27d020cf JH |
2804 | free (order); |
2805 | ||
2806 | if (nonconstant_names.exists () && !early) | |
2807 | { | |
99b1c316 | 2808 | class loop *loop; |
27d020cf JH |
2809 | predicate loop_iterations = true; |
2810 | predicate loop_stride = true; | |
2811 | ||
2812 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2813 | flow_loops_dump (dump_file, NULL, 0); | |
2814 | scev_initialize (); | |
2815 | FOR_EACH_LOOP (loop, 0) | |
2816 | { | |
27d020cf JH |
2817 | edge ex; |
2818 | unsigned int j; | |
99b1c316 | 2819 | class tree_niter_desc niter_desc; |
776e48e0 JJ |
2820 | if (loop->header->aux) |
2821 | bb_predicate = *(predicate *) loop->header->aux; | |
2822 | else | |
2823 | bb_predicate = false; | |
27d020cf | 2824 | |
4b9d61f7 | 2825 | auto_vec<edge> exits = get_loop_exit_edges (loop); |
27d020cf JH |
2826 | FOR_EACH_VEC_ELT (exits, j, ex) |
2827 | if (number_of_iterations_exit (loop, ex, &niter_desc, false) | |
2828 | && !is_gimple_min_invariant (niter_desc.niter)) | |
2829 | { | |
2830 | predicate will_be_nonconstant | |
c628d1c3 | 2831 | = will_be_nonconstant_expr_predicate (&fbi, info, |
40a777e8 | 2832 | params_summary, |
27d020cf JH |
2833 | niter_desc.niter, |
2834 | nonconstant_names); | |
2835 | if (will_be_nonconstant != true) | |
2836 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
2837 | if (will_be_nonconstant != true | |
2838 | && will_be_nonconstant != false) | |
2839 | /* This is slightly inprecise. We may want to represent each | |
2840 | loop with independent predicate. */ | |
2841 | loop_iterations &= will_be_nonconstant; | |
2842 | } | |
27d020cf JH |
2843 | } |
2844 | ||
2845 | /* To avoid quadratic behavior we analyze stride predicates only | |
2846 | with respect to the containing loop. Thus we simply iterate | |
2847 | over all defs in the outermost loop body. */ | |
2848 | for (loop = loops_for_fn (cfun)->tree_root->inner; | |
2849 | loop != NULL; loop = loop->next) | |
2850 | { | |
2851 | basic_block *body = get_loop_body (loop); | |
2852 | for (unsigned i = 0; i < loop->num_nodes; i++) | |
2853 | { | |
2854 | gimple_stmt_iterator gsi; | |
776e48e0 JJ |
2855 | if (body[i]->aux) |
2856 | bb_predicate = *(predicate *) body[i]->aux; | |
2857 | else | |
2858 | bb_predicate = false; | |
27d020cf JH |
2859 | for (gsi = gsi_start_bb (body[i]); !gsi_end_p (gsi); |
2860 | gsi_next (&gsi)) | |
2861 | { | |
2862 | gimple *stmt = gsi_stmt (gsi); | |
2863 | ||
2864 | if (!is_gimple_assign (stmt)) | |
2865 | continue; | |
2866 | ||
2867 | tree def = gimple_assign_lhs (stmt); | |
2868 | if (TREE_CODE (def) != SSA_NAME) | |
2869 | continue; | |
2870 | ||
2871 | affine_iv iv; | |
2872 | if (!simple_iv (loop_containing_stmt (stmt), | |
2873 | loop_containing_stmt (stmt), | |
2874 | def, &iv, true) | |
2875 | || is_gimple_min_invariant (iv.step)) | |
2876 | continue; | |
2877 | ||
2878 | predicate will_be_nonconstant | |
40a777e8 JH |
2879 | = will_be_nonconstant_expr_predicate (&fbi, info, |
2880 | params_summary, | |
2881 | iv.step, | |
27d020cf JH |
2882 | nonconstant_names); |
2883 | if (will_be_nonconstant != true) | |
2884 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
2885 | if (will_be_nonconstant != true | |
2886 | && will_be_nonconstant != false) | |
2887 | /* This is slightly inprecise. We may want to represent | |
2888 | each loop with independent predicate. */ | |
2889 | loop_stride = loop_stride & will_be_nonconstant; | |
2890 | } | |
2891 | } | |
2892 | free (body); | |
2893 | } | |
56f62793 | 2894 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
cf9b0b5f ML |
2895 | set_hint_predicate (&s->loop_iterations, loop_iterations); |
2896 | set_hint_predicate (&s->loop_stride, loop_stride); | |
27d020cf JH |
2897 | scev_finalize (); |
2898 | } | |
2899 | FOR_ALL_BB_FN (bb, my_function) | |
2900 | { | |
2901 | edge e; | |
2902 | edge_iterator ei; | |
2903 | ||
2904 | if (bb->aux) | |
2905 | edge_predicate_pool.remove ((predicate *)bb->aux); | |
2906 | bb->aux = NULL; | |
2907 | FOR_EACH_EDGE (e, ei, bb->succs) | |
2908 | { | |
2909 | if (e->aux) | |
2910 | edge_predicate_pool.remove ((predicate *) e->aux); | |
2911 | e->aux = NULL; | |
2912 | } | |
2913 | } | |
56f62793 | 2914 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 2915 | ipa_size_summary *ss = ipa_size_summaries->get (node); |
cf9b0b5f | 2916 | s->time = time; |
f658ad30 | 2917 | ss->self_size = size; |
27d020cf JH |
2918 | nonconstant_names.release (); |
2919 | ipa_release_body_info (&fbi); | |
2920 | if (opt_for_fn (node->decl, optimize)) | |
2921 | { | |
2922 | if (!early) | |
2923 | loop_optimizer_finalize (); | |
2924 | else if (!ipa_edge_args_sum) | |
2925 | ipa_free_all_node_params (); | |
2926 | free_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2927 | free_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2928 | } |
2929 | if (dump_file) | |
2930 | { | |
2931 | fprintf (dump_file, "\n"); | |
0bceb671 | 2932 | ipa_dump_fn_summary (dump_file, node); |
27d020cf JH |
2933 | } |
2934 | } | |
2935 | ||
2936 | ||
0bceb671 JH |
2937 | /* Compute function summary. |
2938 | EARLY is true when we compute parameters during early opts. */ | |
27d020cf JH |
2939 | |
2940 | void | |
0bceb671 | 2941 | compute_fn_summary (struct cgraph_node *node, bool early) |
27d020cf JH |
2942 | { |
2943 | HOST_WIDE_INT self_stack_size; | |
2944 | struct cgraph_edge *e; | |
27d020cf | 2945 | |
a62bfab5 | 2946 | gcc_assert (!node->inlined_to); |
27d020cf | 2947 | |
0bceb671 JH |
2948 | if (!ipa_fn_summaries) |
2949 | ipa_fn_summary_alloc (); | |
27d020cf | 2950 | |
56f62793 ML |
2951 | /* Create a new ipa_fn_summary. */ |
2952 | ((ipa_fn_summary_t *)ipa_fn_summaries)->remove_callees (node); | |
2953 | ipa_fn_summaries->remove (node); | |
f658ad30 JH |
2954 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
2955 | class ipa_size_summary *size_info = ipa_size_summaries->get_create (node); | |
27d020cf JH |
2956 | |
2957 | /* Estimate the stack size for the function if we're optimizing. */ | |
2958 | self_stack_size = optimize && !node->thunk.thunk_p | |
2959 | ? estimated_stack_frame_size (node) : 0; | |
f658ad30 | 2960 | size_info->estimated_self_stack_size = self_stack_size; |
27d020cf | 2961 | info->estimated_stack_size = self_stack_size; |
27d020cf JH |
2962 | |
2963 | if (node->thunk.thunk_p) | |
2964 | { | |
99353fcf | 2965 | ipa_call_summary *es = ipa_call_summaries->get_create (node->callees); |
27d020cf JH |
2966 | predicate t = true; |
2967 | ||
87f94429 | 2968 | node->can_change_signature = false; |
27d020cf JH |
2969 | es->call_stmt_size = eni_size_weights.call_cost; |
2970 | es->call_stmt_time = eni_time_weights.call_cost; | |
d06f73a3 | 2971 | info->account_size_time (ipa_fn_summary::size_scale |
9340d345 JH |
2972 | * opt_for_fn (node->decl, |
2973 | param_uninlined_function_thunk_insns), | |
2974 | opt_for_fn (node->decl, | |
2975 | param_uninlined_function_thunk_time), t, t); | |
27d020cf | 2976 | t = predicate::not_inlined (); |
0bceb671 JH |
2977 | info->account_size_time (2 * ipa_fn_summary::size_scale, 0, t, t); |
2978 | ipa_update_overall_fn_summary (node); | |
f658ad30 | 2979 | size_info->self_size = size_info->size; |
dbcdd561 | 2980 | if (stdarg_p (TREE_TYPE (node->decl))) |
ca04a532 ML |
2981 | { |
2982 | info->inlinable = false; | |
2983 | node->callees->inline_failed = CIF_VARIADIC_THUNK; | |
2984 | } | |
27d020cf JH |
2985 | else |
2986 | info->inlinable = true; | |
2987 | } | |
2988 | else | |
2989 | { | |
2990 | /* Even is_gimple_min_invariant rely on current_function_decl. */ | |
2991 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
2992 | ||
ac0573de JH |
2993 | /* During IPA profile merging we may be called w/o virtual SSA form |
2994 | built. */ | |
2995 | update_ssa (TODO_update_ssa_only_virtuals); | |
2996 | ||
27d020cf JH |
2997 | /* Can this function be inlined at all? */ |
2998 | if (!opt_for_fn (node->decl, optimize) | |
2999 | && !lookup_attribute ("always_inline", | |
3000 | DECL_ATTRIBUTES (node->decl))) | |
3001 | info->inlinable = false; | |
3002 | else | |
3003 | info->inlinable = tree_inlinable_function_p (node->decl); | |
3004 | ||
27d020cf | 3005 | /* Type attributes can use parameter indices to describe them. */ |
3d8fb311 JJ |
3006 | if (TYPE_ATTRIBUTES (TREE_TYPE (node->decl)) |
3007 | /* Likewise for #pragma omp declare simd functions or functions | |
3008 | with simd attribute. */ | |
3009 | || lookup_attribute ("omp declare simd", | |
3010 | DECL_ATTRIBUTES (node->decl))) | |
87f94429 | 3011 | node->can_change_signature = false; |
27d020cf JH |
3012 | else |
3013 | { | |
3014 | /* Otherwise, inlinable functions always can change signature. */ | |
3015 | if (info->inlinable) | |
87f94429 | 3016 | node->can_change_signature = true; |
27d020cf JH |
3017 | else |
3018 | { | |
67914693 | 3019 | /* Functions calling builtin_apply cannot change signature. */ |
27d020cf JH |
3020 | for (e = node->callees; e; e = e->next_callee) |
3021 | { | |
3022 | tree cdecl = e->callee->decl; | |
3d78e008 ML |
3023 | if (fndecl_built_in_p (cdecl, BUILT_IN_APPLY_ARGS) |
3024 | || fndecl_built_in_p (cdecl, BUILT_IN_VA_START)) | |
27d020cf JH |
3025 | break; |
3026 | } | |
87f94429 | 3027 | node->can_change_signature = !e; |
27d020cf JH |
3028 | } |
3029 | } | |
0bceb671 | 3030 | analyze_function_body (node, early); |
27d020cf JH |
3031 | pop_cfun (); |
3032 | } | |
27d020cf JH |
3033 | |
3034 | /* Inlining characteristics are maintained by the cgraph_mark_inline. */ | |
f658ad30 JH |
3035 | size_info->size = size_info->self_size; |
3036 | info->estimated_stack_size = size_info->estimated_self_stack_size; | |
27d020cf JH |
3037 | |
3038 | /* Code above should compute exactly the same result as | |
0bceb671 | 3039 | ipa_update_overall_fn_summary but because computation happens in |
27d020cf | 3040 | different order the roundoff errors result in slight changes. */ |
0bceb671 | 3041 | ipa_update_overall_fn_summary (node); |
959b8c82 | 3042 | /* In LTO mode we may have speculative edges set. */ |
f658ad30 | 3043 | gcc_assert (in_lto_p || size_info->size == size_info->self_size); |
27d020cf JH |
3044 | } |
3045 | ||
3046 | ||
3047 | /* Compute parameters of functions used by inliner using | |
3048 | current_function_decl. */ | |
3049 | ||
3050 | static unsigned int | |
0bceb671 | 3051 | compute_fn_summary_for_current (void) |
27d020cf | 3052 | { |
0bceb671 | 3053 | compute_fn_summary (cgraph_node::get (current_function_decl), true); |
27d020cf JH |
3054 | return 0; |
3055 | } | |
3056 | ||
27d020cf JH |
3057 | /* Estimate benefit devirtualizing indirect edge IE, provided KNOWN_VALS, |
3058 | KNOWN_CONTEXTS and KNOWN_AGGS. */ | |
3059 | ||
3060 | static bool | |
3061 | estimate_edge_devirt_benefit (struct cgraph_edge *ie, | |
3062 | int *size, int *time, | |
3063 | vec<tree> known_vals, | |
3064 | vec<ipa_polymorphic_call_context> known_contexts, | |
eb270950 | 3065 | vec<ipa_agg_value_set> known_aggs) |
27d020cf JH |
3066 | { |
3067 | tree target; | |
3068 | struct cgraph_node *callee; | |
99b1c316 | 3069 | class ipa_fn_summary *isummary; |
27d020cf JH |
3070 | enum availability avail; |
3071 | bool speculative; | |
3072 | ||
b0d55476 | 3073 | if (!known_vals.length () && !known_contexts.length ()) |
27d020cf JH |
3074 | return false; |
3075 | if (!opt_for_fn (ie->caller->decl, flag_indirect_inlining)) | |
3076 | return false; | |
3077 | ||
3078 | target = ipa_get_indirect_edge_target (ie, known_vals, known_contexts, | |
3079 | known_aggs, &speculative); | |
3080 | if (!target || speculative) | |
3081 | return false; | |
3082 | ||
3083 | /* Account for difference in cost between indirect and direct calls. */ | |
3084 | *size -= (eni_size_weights.indirect_call_cost - eni_size_weights.call_cost); | |
3085 | *time -= (eni_time_weights.indirect_call_cost - eni_time_weights.call_cost); | |
3086 | gcc_checking_assert (*time >= 0); | |
3087 | gcc_checking_assert (*size >= 0); | |
3088 | ||
3089 | callee = cgraph_node::get (target); | |
3090 | if (!callee || !callee->definition) | |
3091 | return false; | |
3092 | callee = callee->function_symbol (&avail); | |
3093 | if (avail < AVAIL_AVAILABLE) | |
3094 | return false; | |
56f62793 | 3095 | isummary = ipa_fn_summaries->get (callee); |
1d546c60 ML |
3096 | if (isummary == NULL) |
3097 | return false; | |
3098 | ||
27d020cf JH |
3099 | return isummary->inlinable; |
3100 | } | |
3101 | ||
3102 | /* Increase SIZE, MIN_SIZE (if non-NULL) and TIME for size and time needed to | |
3103 | handle edge E with probability PROB. | |
3104 | Set HINTS if edge may be devirtualized. | |
3105 | KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS describe context of the call | |
3106 | site. */ | |
3107 | ||
3108 | static inline void | |
3109 | estimate_edge_size_and_time (struct cgraph_edge *e, int *size, int *min_size, | |
3110 | sreal *time, | |
27d020cf JH |
3111 | vec<tree> known_vals, |
3112 | vec<ipa_polymorphic_call_context> known_contexts, | |
eb270950 | 3113 | vec<ipa_agg_value_set> known_aggs, |
0bceb671 | 3114 | ipa_hints *hints) |
27d020cf | 3115 | { |
99b1c316 | 3116 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3117 | int call_size = es->call_stmt_size; |
3118 | int call_time = es->call_stmt_time; | |
3119 | int cur_size; | |
98450d19 | 3120 | |
83263ef5 | 3121 | if (!e->callee && hints && e->maybe_hot_p () |
27d020cf | 3122 | && estimate_edge_devirt_benefit (e, &call_size, &call_time, |
83263ef5 | 3123 | known_vals, known_contexts, known_aggs)) |
27d020cf | 3124 | *hints |= INLINE_HINT_indirect_call; |
0bceb671 | 3125 | cur_size = call_size * ipa_fn_summary::size_scale; |
27d020cf JH |
3126 | *size += cur_size; |
3127 | if (min_size) | |
3128 | *min_size += cur_size; | |
98450d19 | 3129 | if (time) |
41f0e819 | 3130 | *time += ((sreal)call_time) * e->sreal_frequency (); |
27d020cf JH |
3131 | } |
3132 | ||
3133 | ||
27d020cf JH |
3134 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all |
3135 | calls in NODE. POSSIBLE_TRUTHS, KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS | |
070e3489 JH |
3136 | describe context of the call site. |
3137 | ||
3138 | Helper for estimate_calls_size_and_time which does the same but | |
3139 | (in most cases) faster. */ | |
27d020cf JH |
3140 | |
3141 | static void | |
070e3489 JH |
3142 | estimate_calls_size_and_time_1 (struct cgraph_node *node, int *size, |
3143 | int *min_size, sreal *time, | |
3144 | ipa_hints *hints, | |
3145 | clause_t possible_truths, | |
3146 | vec<tree> known_vals, | |
3147 | vec<ipa_polymorphic_call_context> known_contexts, | |
3148 | vec<ipa_agg_value_set> known_aggs) | |
27d020cf JH |
3149 | { |
3150 | struct cgraph_edge *e; | |
3151 | for (e = node->callees; e; e = e->next_callee) | |
3152 | { | |
7237f93e JH |
3153 | if (!e->inline_failed) |
3154 | { | |
3155 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
070e3489 JH |
3156 | estimate_calls_size_and_time_1 (e->callee, size, min_size, time, |
3157 | hints, | |
3158 | possible_truths, | |
3159 | known_vals, known_contexts, | |
3160 | known_aggs); | |
7237f93e JH |
3161 | continue; |
3162 | } | |
3163 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
27d020cf JH |
3164 | |
3165 | /* Do not care about zero sized builtins. */ | |
7237f93e | 3166 | if (!es->call_stmt_size) |
27d020cf JH |
3167 | { |
3168 | gcc_checking_assert (!es->call_stmt_time); | |
3169 | continue; | |
3170 | } | |
3171 | if (!es->predicate | |
3172 | || es->predicate->evaluate (possible_truths)) | |
3173 | { | |
7237f93e | 3174 | /* Predicates of calls shall not use NOT_CHANGED codes, |
956d615d | 3175 | so we do not need to compute probabilities. */ |
7237f93e JH |
3176 | estimate_edge_size_and_time (e, size, |
3177 | es->predicate ? NULL : min_size, | |
98450d19 | 3178 | time, |
7237f93e JH |
3179 | known_vals, known_contexts, |
3180 | known_aggs, hints); | |
27d020cf JH |
3181 | } |
3182 | } | |
3183 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3184 | { | |
7237f93e | 3185 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3186 | if (!es->predicate |
3187 | || es->predicate->evaluate (possible_truths)) | |
3188 | estimate_edge_size_and_time (e, size, | |
3189 | es->predicate ? NULL : min_size, | |
98450d19 | 3190 | time, |
27d020cf JH |
3191 | known_vals, known_contexts, known_aggs, |
3192 | hints); | |
3193 | } | |
3194 | } | |
3195 | ||
070e3489 JH |
3196 | /* Populate sum->call_size_time_table for edges from NODE. */ |
3197 | ||
3198 | static void | |
3199 | summarize_calls_size_and_time (struct cgraph_node *node, | |
3200 | ipa_fn_summary *sum) | |
3201 | { | |
3202 | struct cgraph_edge *e; | |
3203 | for (e = node->callees; e; e = e->next_callee) | |
3204 | { | |
3205 | if (!e->inline_failed) | |
3206 | { | |
3207 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
3208 | summarize_calls_size_and_time (e->callee, sum); | |
3209 | continue; | |
3210 | } | |
3211 | int size = 0; | |
3212 | sreal time = 0; | |
3213 | ||
3214 | estimate_edge_size_and_time (e, &size, NULL, &time, | |
3215 | vNULL, vNULL, vNULL, NULL); | |
3216 | ||
3217 | struct predicate pred = true; | |
3218 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
3219 | ||
3220 | if (es->predicate) | |
3221 | pred = *es->predicate; | |
3222 | sum->account_size_time (size, time, pred, pred, true); | |
3223 | } | |
3224 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3225 | { | |
3226 | int size = 0; | |
3227 | sreal time = 0; | |
3228 | ||
3229 | estimate_edge_size_and_time (e, &size, NULL, &time, | |
3230 | vNULL, vNULL, vNULL, NULL); | |
3231 | struct predicate pred = true; | |
3232 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
3233 | ||
3234 | if (es->predicate) | |
3235 | pred = *es->predicate; | |
3236 | sum->account_size_time (size, time, pred, pred, true); | |
3237 | } | |
3238 | } | |
3239 | ||
3240 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all | |
3241 | calls in NODE. POSSIBLE_TRUTHS, KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS | |
3242 | describe context of the call site. */ | |
3243 | ||
3244 | static void | |
3245 | estimate_calls_size_and_time (struct cgraph_node *node, int *size, | |
3246 | int *min_size, sreal *time, | |
3247 | ipa_hints *hints, | |
3248 | clause_t possible_truths, | |
3249 | vec<tree> known_vals, | |
3250 | vec<ipa_polymorphic_call_context> known_contexts, | |
3251 | vec<ipa_agg_value_set> known_aggs) | |
3252 | { | |
3253 | class ipa_fn_summary *sum = ipa_fn_summaries->get (node); | |
3254 | bool use_table = true; | |
3255 | ||
3256 | gcc_assert (node->callees || node->indirect_calls); | |
3257 | ||
3258 | /* During early inlining we do not calculate info for very | |
3259 | large functions and thus there is no need for producing | |
3260 | summaries. */ | |
3261 | if (!ipa_node_params_sum) | |
3262 | use_table = false; | |
3263 | /* Do not calculate summaries for simple wrappers; it is waste | |
3264 | of memory. */ | |
3265 | else if (node->callees && node->indirect_calls | |
3266 | && node->callees->inline_failed && !node->callees->next_callee) | |
3267 | use_table = false; | |
3268 | /* If there is an indirect edge that may be optimized, we need | |
3269 | to go the slow way. */ | |
3270 | else if ((known_vals.length () | |
3271 | || known_contexts.length () | |
3272 | || known_aggs.length ()) && hints) | |
3273 | { | |
3274 | class ipa_node_params *params_summary = IPA_NODE_REF (node); | |
3275 | unsigned int nargs = params_summary | |
3276 | ? ipa_get_param_count (params_summary) : 0; | |
3277 | ||
3278 | for (unsigned int i = 0; i < nargs && use_table; i++) | |
3279 | { | |
3280 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
3281 | && ((known_vals.length () > i && known_vals[i]) | |
3282 | || (known_aggs.length () > i | |
3283 | && known_aggs[i].items.length ()))) | |
3284 | use_table = false; | |
3285 | else if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
3286 | && (known_contexts.length () > i | |
3287 | && !known_contexts[i].useless_p ())) | |
3288 | use_table = false; | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | /* Fast path is via the call size time table. */ | |
3293 | if (use_table) | |
3294 | { | |
3295 | /* Build summary if it is absent. */ | |
3296 | if (!sum->call_size_time_table) | |
3297 | { | |
3298 | predicate true_pred = true; | |
3299 | sum->account_size_time (0, 0, true_pred, true_pred, true); | |
3300 | summarize_calls_size_and_time (node, sum); | |
3301 | } | |
3302 | ||
3303 | int old_size = *size; | |
3304 | sreal old_time = time ? *time : 0; | |
3305 | ||
3306 | if (min_size) | |
3307 | *min_size += (*sum->call_size_time_table)[0].size; | |
3308 | ||
3309 | unsigned int i; | |
3310 | size_time_entry *e; | |
3311 | ||
3312 | /* Walk the table and account sizes and times. */ | |
3313 | for (i = 0; vec_safe_iterate (sum->call_size_time_table, i, &e); | |
3314 | i++) | |
3315 | if (e->exec_predicate.evaluate (possible_truths)) | |
3316 | { | |
3317 | *size += e->size; | |
3318 | if (time) | |
3319 | *time += e->time; | |
3320 | } | |
3321 | ||
3322 | /* Be careful and see if both methods agree. */ | |
3323 | if ((flag_checking || dump_file) | |
3324 | /* Do not try to sanity check when we know we lost some | |
3325 | precision. */ | |
3326 | && sum->call_size_time_table->length () | |
3327 | < ipa_fn_summary::max_size_time_table_size) | |
3328 | { | |
3329 | estimate_calls_size_and_time_1 (node, &old_size, NULL, &old_time, NULL, | |
3330 | possible_truths, known_vals, | |
3331 | known_contexts, known_aggs); | |
3332 | gcc_assert (*size == old_size); | |
3333 | if (time && (*time - old_time > 1 || *time - old_time < -1) | |
3334 | && dump_file) | |
f5b25e15 | 3335 | fprintf (dump_file, "Time mismatch in call summary %f!=%f\n", |
070e3489 JH |
3336 | old_time.to_double (), |
3337 | time->to_double ()); | |
3338 | } | |
3339 | } | |
3340 | /* Slow path by walking all edges. */ | |
3341 | else | |
3342 | estimate_calls_size_and_time_1 (node, size, min_size, time, hints, | |
3343 | possible_truths, known_vals, known_contexts, | |
3344 | known_aggs); | |
3345 | } | |
3346 | ||
1532500e | 3347 | /* Default constructor for ipa call context. |
956d615d | 3348 | Memory allocation of known_vals, known_contexts |
1532500e JH |
3349 | and known_aggs vectors is owned by the caller, but can |
3350 | be release by ipa_call_context::release. | |
3351 | ||
3352 | inline_param_summary is owned by the caller. */ | |
3353 | ipa_call_context::ipa_call_context (cgraph_node *node, | |
3354 | clause_t possible_truths, | |
3355 | clause_t nonspec_possible_truths, | |
3356 | vec<tree> known_vals, | |
3357 | vec<ipa_polymorphic_call_context> | |
3358 | known_contexts, | |
eb270950 | 3359 | vec<ipa_agg_value_set> known_aggs, |
1532500e JH |
3360 | vec<inline_param_summary> |
3361 | inline_param_summary) | |
3362 | : m_node (node), m_possible_truths (possible_truths), | |
3363 | m_nonspec_possible_truths (nonspec_possible_truths), | |
3364 | m_inline_param_summary (inline_param_summary), | |
3365 | m_known_vals (known_vals), | |
3366 | m_known_contexts (known_contexts), | |
3367 | m_known_aggs (known_aggs) | |
3368 | { | |
3369 | } | |
3370 | ||
40a777e8 JH |
3371 | /* Set THIS to be a duplicate of CTX. Copy all relevant info. */ |
3372 | ||
ac6f2e59 JH |
3373 | void |
3374 | ipa_call_context::duplicate_from (const ipa_call_context &ctx) | |
3375 | { | |
3376 | m_node = ctx.m_node; | |
3377 | m_possible_truths = ctx.m_possible_truths; | |
3378 | m_nonspec_possible_truths = ctx.m_nonspec_possible_truths; | |
40a777e8 | 3379 | class ipa_node_params *params_summary = IPA_NODE_REF (m_node); |
6cf67b62 JH |
3380 | unsigned int nargs = params_summary |
3381 | ? ipa_get_param_count (params_summary) : 0; | |
ac6f2e59 | 3382 | |
40a777e8 JH |
3383 | m_inline_param_summary = vNULL; |
3384 | /* Copy the info only if there is at least one useful entry. */ | |
ac6f2e59 | 3385 | if (ctx.m_inline_param_summary.exists ()) |
40a777e8 JH |
3386 | { |
3387 | unsigned int n = MIN (ctx.m_inline_param_summary.length (), nargs); | |
3388 | ||
3389 | for (unsigned int i = 0; i < n; i++) | |
3390 | if (ipa_is_param_used_by_ipa_predicates (params_summary, i) | |
3391 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3392 | { | |
3393 | m_inline_param_summary | |
3394 | = ctx.m_inline_param_summary.copy (); | |
3395 | break; | |
3396 | } | |
3397 | } | |
3398 | m_known_vals = vNULL; | |
ac6f2e59 | 3399 | if (ctx.m_known_vals.exists ()) |
40a777e8 JH |
3400 | { |
3401 | unsigned int n = MIN (ctx.m_known_vals.length (), nargs); | |
3402 | ||
3403 | for (unsigned int i = 0; i < n; i++) | |
3404 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
3405 | && ctx.m_known_vals[i]) | |
3406 | { | |
3407 | m_known_vals = ctx.m_known_vals.copy (); | |
3408 | break; | |
3409 | } | |
3410 | } | |
3411 | ||
3412 | m_known_contexts = vNULL; | |
ac6f2e59 | 3413 | if (ctx.m_known_contexts.exists ()) |
40a777e8 JH |
3414 | { |
3415 | unsigned int n = MIN (ctx.m_known_contexts.length (), nargs); | |
3416 | ||
3417 | for (unsigned int i = 0; i < n; i++) | |
3418 | if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
3419 | && !ctx.m_known_contexts[i].useless_p ()) | |
3420 | { | |
3421 | m_known_contexts = ctx.m_known_contexts.copy (); | |
3422 | break; | |
3423 | } | |
3424 | } | |
3425 | ||
3426 | m_known_aggs = vNULL; | |
ac6f2e59 | 3427 | if (ctx.m_known_aggs.exists ()) |
40a777e8 JH |
3428 | { |
3429 | unsigned int n = MIN (ctx.m_known_aggs.length (), nargs); | |
3430 | ||
3431 | for (unsigned int i = 0; i < n; i++) | |
3432 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
eb270950 | 3433 | && !ctx.m_known_aggs[i].is_empty ()) |
40a777e8 | 3434 | { |
eb270950 | 3435 | m_known_aggs = ipa_copy_agg_values (ctx.m_known_aggs); |
40a777e8 JH |
3436 | break; |
3437 | } | |
3438 | } | |
ac6f2e59 JH |
3439 | } |
3440 | ||
3441 | /* Release memory used by known_vals/contexts/aggs vectors. | |
3442 | If ALL is true release also inline_param_summary. | |
956d615d | 3443 | This happens when context was previously duplicated to be stored |
ac6f2e59 | 3444 | into cache. */ |
1532500e JH |
3445 | |
3446 | void | |
ac6f2e59 | 3447 | ipa_call_context::release (bool all) |
1532500e | 3448 | { |
ac6f2e59 JH |
3449 | /* See if context is initialized at first place. */ |
3450 | if (!m_node) | |
3451 | return; | |
b0d55476 | 3452 | ipa_release_agg_values (m_known_aggs, all); |
ac6f2e59 | 3453 | if (all) |
b0d55476 JH |
3454 | { |
3455 | m_known_vals.release (); | |
3456 | m_known_contexts.release (); | |
3457 | m_inline_param_summary.release (); | |
3458 | } | |
ac6f2e59 JH |
3459 | } |
3460 | ||
3461 | /* Return true if CTX describes the same call context as THIS. */ | |
3462 | ||
3463 | bool | |
3464 | ipa_call_context::equal_to (const ipa_call_context &ctx) | |
3465 | { | |
3466 | if (m_node != ctx.m_node | |
3467 | || m_possible_truths != ctx.m_possible_truths | |
3468 | || m_nonspec_possible_truths != ctx.m_nonspec_possible_truths) | |
3469 | return false; | |
40a777e8 JH |
3470 | |
3471 | class ipa_node_params *params_summary = IPA_NODE_REF (m_node); | |
6cf67b62 JH |
3472 | unsigned int nargs = params_summary |
3473 | ? ipa_get_param_count (params_summary) : 0; | |
40a777e8 JH |
3474 | |
3475 | if (m_inline_param_summary.exists () || ctx.m_inline_param_summary.exists ()) | |
ac6f2e59 | 3476 | { |
40a777e8 JH |
3477 | for (unsigned int i = 0; i < nargs; i++) |
3478 | { | |
3479 | if (!ipa_is_param_used_by_ipa_predicates (params_summary, i)) | |
3480 | continue; | |
3481 | if (i >= m_inline_param_summary.length () | |
3482 | || m_inline_param_summary[i].useless_p ()) | |
3483 | { | |
3484 | if (i < ctx.m_inline_param_summary.length () | |
3485 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3486 | return false; | |
3487 | continue; | |
3488 | } | |
3489 | if (i >= ctx.m_inline_param_summary.length () | |
3490 | || ctx.m_inline_param_summary[i].useless_p ()) | |
3491 | { | |
3492 | if (i < m_inline_param_summary.length () | |
3493 | && !m_inline_param_summary[i].useless_p ()) | |
3494 | return false; | |
3495 | continue; | |
3496 | } | |
3497 | if (!m_inline_param_summary[i].equal_to | |
3498 | (ctx.m_inline_param_summary[i])) | |
3499 | return false; | |
3500 | } | |
ac6f2e59 | 3501 | } |
40a777e8 | 3502 | if (m_known_vals.exists () || ctx.m_known_vals.exists ()) |
ac6f2e59 | 3503 | { |
40a777e8 | 3504 | for (unsigned int i = 0; i < nargs; i++) |
ac6f2e59 | 3505 | { |
40a777e8 JH |
3506 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) |
3507 | continue; | |
3508 | if (i >= m_known_vals.length () || !m_known_vals[i]) | |
3509 | { | |
3510 | if (i < ctx.m_known_vals.length () && ctx.m_known_vals[i]) | |
3511 | return false; | |
3512 | continue; | |
3513 | } | |
3514 | if (i >= ctx.m_known_vals.length () || !ctx.m_known_vals[i]) | |
3515 | { | |
3516 | if (i < m_known_vals.length () && m_known_vals[i]) | |
3517 | return false; | |
3518 | continue; | |
3519 | } | |
3520 | if (m_known_vals[i] != ctx.m_known_vals[i]) | |
ac6f2e59 JH |
3521 | return false; |
3522 | } | |
3523 | } | |
40a777e8 | 3524 | if (m_known_contexts.exists () || ctx.m_known_contexts.exists ()) |
ac6f2e59 | 3525 | { |
40a777e8 JH |
3526 | for (unsigned int i = 0; i < nargs; i++) |
3527 | { | |
3528 | if (!ipa_is_param_used_by_polymorphic_call (params_summary, i)) | |
3529 | continue; | |
3530 | if (i >= m_known_contexts.length () | |
3531 | || m_known_contexts[i].useless_p ()) | |
3532 | { | |
3533 | if (i < ctx.m_known_contexts.length () | |
3534 | && !ctx.m_known_contexts[i].useless_p ()) | |
3535 | return false; | |
3536 | continue; | |
3537 | } | |
3538 | if (i >= ctx.m_known_contexts.length () | |
3539 | || ctx.m_known_contexts[i].useless_p ()) | |
3540 | { | |
3541 | if (i < m_known_contexts.length () | |
3542 | && !m_known_contexts[i].useless_p ()) | |
3543 | return false; | |
3544 | continue; | |
3545 | } | |
3546 | if (!m_known_contexts[i].equal_to | |
3547 | (ctx.m_known_contexts[i])) | |
3548 | return false; | |
3549 | } | |
ac6f2e59 | 3550 | } |
40a777e8 | 3551 | if (m_known_aggs.exists () || ctx.m_known_aggs.exists ()) |
ac6f2e59 | 3552 | { |
40a777e8 JH |
3553 | for (unsigned int i = 0; i < nargs; i++) |
3554 | { | |
3555 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) | |
3556 | continue; | |
eb270950 | 3557 | if (i >= m_known_aggs.length () || m_known_aggs[i].is_empty ()) |
40a777e8 | 3558 | { |
eb270950 FX |
3559 | if (i < ctx.m_known_aggs.length () |
3560 | && !ctx.m_known_aggs[i].is_empty ()) | |
40a777e8 JH |
3561 | return false; |
3562 | continue; | |
3563 | } | |
eb270950 FX |
3564 | if (i >= ctx.m_known_aggs.length () |
3565 | || ctx.m_known_aggs[i].is_empty ()) | |
40a777e8 | 3566 | { |
eb270950 FX |
3567 | if (i < m_known_aggs.length () |
3568 | && !m_known_aggs[i].is_empty ()) | |
40a777e8 JH |
3569 | return false; |
3570 | continue; | |
3571 | } | |
eb270950 | 3572 | if (!m_known_aggs[i].equal_to (ctx.m_known_aggs[i])) |
40a777e8 JH |
3573 | return false; |
3574 | } | |
ac6f2e59 JH |
3575 | } |
3576 | return true; | |
1532500e | 3577 | } |
27d020cf | 3578 | |
1532500e | 3579 | /* Estimate size and time needed to execute call in the given context. |
956d615d | 3580 | Additionally determine hints determined by the context. Finally compute |
27d020cf JH |
3581 | minimal size needed for the call that is independent on the call context and |
3582 | can be used for fast estimates. Return the values in RET_SIZE, | |
3583 | RET_MIN_SIZE, RET_TIME and RET_HINTS. */ | |
3584 | ||
3585 | void | |
1532500e JH |
3586 | ipa_call_context::estimate_size_and_time (int *ret_size, |
3587 | int *ret_min_size, | |
3588 | sreal *ret_time, | |
3589 | sreal *ret_nonspecialized_time, | |
3590 | ipa_hints *ret_hints) | |
27d020cf | 3591 | { |
7237f93e | 3592 | class ipa_fn_summary *info = ipa_fn_summaries->get (m_node); |
27d020cf JH |
3593 | size_time_entry *e; |
3594 | int size = 0; | |
3595 | sreal time = 0; | |
3596 | int min_size = 0; | |
0bceb671 | 3597 | ipa_hints hints = 0; |
27d020cf JH |
3598 | int i; |
3599 | ||
3600 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3601 | { | |
3602 | bool found = false; | |
d597b944 ML |
3603 | fprintf (dump_file, " Estimating body: %s\n" |
3604 | " Known to be false: ", m_node->dump_name ()); | |
27d020cf JH |
3605 | |
3606 | for (i = predicate::not_inlined_condition; | |
3607 | i < (predicate::first_dynamic_condition | |
3608 | + (int) vec_safe_length (info->conds)); i++) | |
1532500e | 3609 | if (!(m_possible_truths & (1 << i))) |
27d020cf JH |
3610 | { |
3611 | if (found) | |
3612 | fprintf (dump_file, ", "); | |
3613 | found = true; | |
3614 | dump_condition (dump_file, info->conds, i); | |
3615 | } | |
3616 | } | |
3617 | ||
070e3489 JH |
3618 | if (m_node->callees || m_node->indirect_calls) |
3619 | estimate_calls_size_and_time (m_node, &size, &min_size, | |
3620 | ret_time ? &time : NULL, | |
3621 | ret_hints ? &hints : NULL, m_possible_truths, | |
3622 | m_known_vals, m_known_contexts, m_known_aggs); | |
83263ef5 | 3623 | |
27d020cf JH |
3624 | sreal nonspecialized_time = time; |
3625 | ||
e3bd08dd | 3626 | min_size += (*info->size_time_table)[0].size; |
27d020cf JH |
3627 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) |
3628 | { | |
1532500e | 3629 | bool exec = e->exec_predicate.evaluate (m_nonspec_possible_truths); |
3494e738 JH |
3630 | |
3631 | /* Because predicates are conservative, it can happen that nonconst is 1 | |
3632 | but exec is 0. */ | |
27d020cf JH |
3633 | if (exec) |
3634 | { | |
1532500e | 3635 | bool nonconst = e->nonconst_predicate.evaluate (m_possible_truths); |
3494e738 | 3636 | |
27d020cf JH |
3637 | gcc_checking_assert (e->time >= 0); |
3638 | gcc_checking_assert (time >= 0); | |
3639 | ||
3640 | /* We compute specialized size only because size of nonspecialized | |
3641 | copy is context independent. | |
3642 | ||
3643 | The difference between nonspecialized execution and specialized is | |
3644 | that nonspecialized is not going to have optimized out computations | |
3645 | known to be constant in a specialized setting. */ | |
3646 | if (nonconst) | |
3647 | size += e->size; | |
83263ef5 JH |
3648 | if (!ret_time) |
3649 | continue; | |
27d020cf JH |
3650 | nonspecialized_time += e->time; |
3651 | if (!nonconst) | |
3652 | ; | |
1532500e | 3653 | else if (!m_inline_param_summary.exists ()) |
27d020cf JH |
3654 | { |
3655 | if (nonconst) | |
3656 | time += e->time; | |
3657 | } | |
3658 | else | |
3659 | { | |
3660 | int prob = e->nonconst_predicate.probability | |
1532500e JH |
3661 | (info->conds, m_possible_truths, |
3662 | m_inline_param_summary); | |
27d020cf JH |
3663 | gcc_checking_assert (prob >= 0); |
3664 | gcc_checking_assert (prob <= REG_BR_PROB_BASE); | |
fd4656a2 JH |
3665 | if (prob == REG_BR_PROB_BASE) |
3666 | time += e->time; | |
3667 | else | |
3668 | time += e->time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
3669 | } |
3670 | gcc_checking_assert (time >= 0); | |
3671 | } | |
3672 | } | |
3673 | gcc_checking_assert ((*info->size_time_table)[0].exec_predicate == true); | |
3674 | gcc_checking_assert ((*info->size_time_table)[0].nonconst_predicate == true); | |
e3bd08dd | 3675 | gcc_checking_assert (min_size >= 0); |
27d020cf JH |
3676 | gcc_checking_assert (size >= 0); |
3677 | gcc_checking_assert (time >= 0); | |
3678 | /* nonspecialized_time should be always bigger than specialized time. | |
3679 | Roundoff issues however may get into the way. */ | |
59d27026 | 3680 | gcc_checking_assert ((nonspecialized_time - time * 99 / 100) >= -1); |
27d020cf JH |
3681 | |
3682 | /* Roundoff issues may make specialized time bigger than nonspecialized | |
956d615d | 3683 | time. We do not really want that to happen because some heuristics |
27d020cf JH |
3684 | may get confused by seeing negative speedups. */ |
3685 | if (time > nonspecialized_time) | |
3686 | time = nonspecialized_time; | |
3687 | ||
83263ef5 JH |
3688 | if (ret_hints) |
3689 | { | |
3690 | if (info->loop_iterations | |
3691 | && !info->loop_iterations->evaluate (m_possible_truths)) | |
3692 | hints |= INLINE_HINT_loop_iterations; | |
3693 | if (info->loop_stride | |
3694 | && !info->loop_stride->evaluate (m_possible_truths)) | |
3695 | hints |= INLINE_HINT_loop_stride; | |
3696 | if (info->scc_no) | |
3697 | hints |= INLINE_HINT_in_scc; | |
3698 | if (DECL_DECLARED_INLINE_P (m_node->decl)) | |
3699 | hints |= INLINE_HINT_declared_inline; | |
3700 | } | |
27d020cf | 3701 | |
0bceb671 JH |
3702 | size = RDIV (size, ipa_fn_summary::size_scale); |
3703 | min_size = RDIV (min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
3704 | |
3705 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3706 | fprintf (dump_file, "\n size:%i time:%f nonspec time:%f\n", (int) size, | |
3707 | time.to_double (), nonspecialized_time.to_double ()); | |
3708 | if (ret_time) | |
3709 | *ret_time = time; | |
3710 | if (ret_nonspecialized_time) | |
3711 | *ret_nonspecialized_time = nonspecialized_time; | |
3712 | if (ret_size) | |
3713 | *ret_size = size; | |
3714 | if (ret_min_size) | |
3715 | *ret_min_size = min_size; | |
3716 | if (ret_hints) | |
3717 | *ret_hints = hints; | |
3718 | return; | |
3719 | } | |
3720 | ||
3721 | ||
3722 | /* Estimate size and time needed to execute callee of EDGE assuming that | |
3723 | parameters known to be constant at caller of EDGE are propagated. | |
3724 | KNOWN_VALS and KNOWN_CONTEXTS are vectors of assumed known constant values | |
3725 | and types for parameters. */ | |
3726 | ||
3727 | void | |
3728 | estimate_ipcp_clone_size_and_time (struct cgraph_node *node, | |
3729 | vec<tree> known_vals, | |
3730 | vec<ipa_polymorphic_call_context> | |
3731 | known_contexts, | |
eb270950 | 3732 | vec<ipa_agg_value_set> known_aggs, |
27d020cf JH |
3733 | int *ret_size, sreal *ret_time, |
3734 | sreal *ret_nonspec_time, | |
0bceb671 | 3735 | ipa_hints *hints) |
27d020cf JH |
3736 | { |
3737 | clause_t clause, nonspec_clause; | |
3738 | ||
68718e8e | 3739 | /* TODO: Also pass known value ranges. */ |
82c4b78d | 3740 | evaluate_conditions_for_known_args (node, false, known_vals, vNULL, |
68718e8e | 3741 | known_aggs, &clause, &nonspec_clause); |
1532500e JH |
3742 | ipa_call_context ctx (node, clause, nonspec_clause, |
3743 | known_vals, known_contexts, | |
3744 | known_aggs, vNULL); | |
3745 | ctx.estimate_size_and_time (ret_size, NULL, ret_time, | |
3746 | ret_nonspec_time, hints); | |
27d020cf JH |
3747 | } |
3748 | ||
f658ad30 JH |
3749 | /* Return stack frame offset where frame of NODE is supposed to start inside |
3750 | of the function it is inlined to. | |
3751 | Return 0 for functions that are not inlined. */ | |
3752 | ||
3753 | HOST_WIDE_INT | |
3754 | ipa_get_stack_frame_offset (struct cgraph_node *node) | |
3755 | { | |
3756 | HOST_WIDE_INT offset = 0; | |
a62bfab5 | 3757 | if (!node->inlined_to) |
f658ad30 JH |
3758 | return 0; |
3759 | node = node->callers->caller; | |
3760 | while (true) | |
3761 | { | |
3762 | offset += ipa_size_summaries->get (node)->estimated_self_stack_size; | |
a62bfab5 | 3763 | if (!node->inlined_to) |
f658ad30 JH |
3764 | return offset; |
3765 | node = node->callers->caller; | |
3766 | } | |
3767 | } | |
3768 | ||
27d020cf JH |
3769 | |
3770 | /* Update summary information of inline clones after inlining. | |
3771 | Compute peak stack usage. */ | |
3772 | ||
3773 | static void | |
3774 | inline_update_callee_summaries (struct cgraph_node *node, int depth) | |
3775 | { | |
3776 | struct cgraph_edge *e; | |
f658ad30 | 3777 | |
27d020cf JH |
3778 | ipa_propagate_frequency (node); |
3779 | for (e = node->callees; e; e = e->next_callee) | |
3780 | { | |
3781 | if (!e->inline_failed) | |
3782 | inline_update_callee_summaries (e->callee, depth); | |
7237f93e JH |
3783 | else |
3784 | ipa_call_summaries->get (e)->loop_depth += depth; | |
27d020cf JH |
3785 | } |
3786 | for (e = node->indirect_calls; e; e = e->next_callee) | |
56f62793 | 3787 | ipa_call_summaries->get (e)->loop_depth += depth; |
27d020cf JH |
3788 | } |
3789 | ||
b89e4559 JH |
3790 | /* Update change_prob and points_to_local_or_readonly_memory of EDGE after |
3791 | INLINED_EDGE has been inlined. | |
3792 | ||
6cf67b62 | 3793 | When function A is inlined in B and A calls C with parameter that |
956d615d | 3794 | changes with probability PROB1 and C is known to be passthrough |
27d020cf JH |
3795 | of argument if B that change with probability PROB2, the probability |
3796 | of change is now PROB1*PROB2. */ | |
3797 | ||
3798 | static void | |
b89e4559 JH |
3799 | remap_edge_params (struct cgraph_edge *inlined_edge, |
3800 | struct cgraph_edge *edge) | |
27d020cf JH |
3801 | { |
3802 | if (ipa_node_params_sum) | |
3803 | { | |
3804 | int i; | |
99b1c316 | 3805 | class ipa_edge_args *args = IPA_EDGE_REF (edge); |
a33c028e JH |
3806 | if (!args) |
3807 | return; | |
99b1c316 MS |
3808 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
3809 | class ipa_call_summary *inlined_es | |
56f62793 | 3810 | = ipa_call_summaries->get (inlined_edge); |
27d020cf | 3811 | |
8c02e054 JH |
3812 | if (es->param.length () == 0) |
3813 | return; | |
3814 | ||
27d020cf JH |
3815 | for (i = 0; i < ipa_get_cs_argument_count (args); i++) |
3816 | { | |
3817 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
3818 | if (jfunc->type == IPA_JF_PASS_THROUGH | |
3819 | || jfunc->type == IPA_JF_ANCESTOR) | |
3820 | { | |
3821 | int id = jfunc->type == IPA_JF_PASS_THROUGH | |
3822 | ? ipa_get_jf_pass_through_formal_id (jfunc) | |
3823 | : ipa_get_jf_ancestor_formal_id (jfunc); | |
3824 | if (id < (int) inlined_es->param.length ()) | |
3825 | { | |
3826 | int prob1 = es->param[i].change_prob; | |
3827 | int prob2 = inlined_es->param[id].change_prob; | |
3828 | int prob = combine_probabilities (prob1, prob2); | |
3829 | ||
3830 | if (prob1 && prob2 && !prob) | |
3831 | prob = 1; | |
3832 | ||
3833 | es->param[i].change_prob = prob; | |
b89e4559 JH |
3834 | |
3835 | if (inlined_es | |
3836 | ->param[id].points_to_local_or_readonly_memory) | |
3837 | es->param[i].points_to_local_or_readonly_memory = true; | |
27d020cf | 3838 | } |
b89e4559 JH |
3839 | if (!es->param[i].points_to_local_or_readonly_memory |
3840 | && jfunc->type == IPA_JF_CONST | |
3841 | && points_to_local_or_readonly_memory_p | |
3842 | (ipa_get_jf_constant (jfunc))) | |
3843 | es->param[i].points_to_local_or_readonly_memory = true; | |
27d020cf JH |
3844 | } |
3845 | } | |
3846 | } | |
3847 | } | |
3848 | ||
3849 | /* Update edge summaries of NODE after INLINED_EDGE has been inlined. | |
3850 | ||
3851 | Remap predicates of callees of NODE. Rest of arguments match | |
3852 | remap_predicate. | |
3853 | ||
3854 | Also update change probabilities. */ | |
3855 | ||
3856 | static void | |
3857 | remap_edge_summaries (struct cgraph_edge *inlined_edge, | |
3858 | struct cgraph_node *node, | |
99b1c316 | 3859 | class ipa_fn_summary *info, |
40a777e8 | 3860 | class ipa_node_params *params_summary, |
99b1c316 | 3861 | class ipa_fn_summary *callee_info, |
27d020cf JH |
3862 | vec<int> operand_map, |
3863 | vec<int> offset_map, | |
3864 | clause_t possible_truths, | |
3865 | predicate *toplev_predicate) | |
3866 | { | |
3867 | struct cgraph_edge *e, *next; | |
3868 | for (e = node->callees; e; e = next) | |
3869 | { | |
27d020cf JH |
3870 | predicate p; |
3871 | next = e->next_callee; | |
3872 | ||
3873 | if (e->inline_failed) | |
3874 | { | |
6cf67b62 | 3875 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
b89e4559 | 3876 | remap_edge_params (inlined_edge, e); |
27d020cf JH |
3877 | |
3878 | if (es->predicate) | |
3879 | { | |
3880 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
3881 | (info, params_summary, |
3882 | callee_info, operand_map, | |
27d020cf JH |
3883 | offset_map, possible_truths, |
3884 | *toplev_predicate); | |
3885 | edge_set_predicate (e, &p); | |
3886 | } | |
3887 | else | |
3888 | edge_set_predicate (e, toplev_predicate); | |
3889 | } | |
3890 | else | |
40a777e8 JH |
3891 | remap_edge_summaries (inlined_edge, e->callee, info, |
3892 | params_summary, callee_info, | |
27d020cf JH |
3893 | operand_map, offset_map, possible_truths, |
3894 | toplev_predicate); | |
3895 | } | |
3896 | for (e = node->indirect_calls; e; e = next) | |
3897 | { | |
99b1c316 | 3898 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3899 | predicate p; |
3900 | next = e->next_callee; | |
3901 | ||
b89e4559 | 3902 | remap_edge_params (inlined_edge, e); |
27d020cf JH |
3903 | if (es->predicate) |
3904 | { | |
3905 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
3906 | (info, params_summary, |
3907 | callee_info, operand_map, offset_map, | |
27d020cf JH |
3908 | possible_truths, *toplev_predicate); |
3909 | edge_set_predicate (e, &p); | |
3910 | } | |
3911 | else | |
3912 | edge_set_predicate (e, toplev_predicate); | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | /* Same as remap_predicate, but set result into hint *HINT. */ | |
3917 | ||
3918 | static void | |
99b1c316 | 3919 | remap_hint_predicate (class ipa_fn_summary *info, |
40a777e8 | 3920 | class ipa_node_params *params_summary, |
99b1c316 | 3921 | class ipa_fn_summary *callee_info, |
27d020cf JH |
3922 | predicate **hint, |
3923 | vec<int> operand_map, | |
3924 | vec<int> offset_map, | |
3925 | clause_t possible_truths, | |
3926 | predicate *toplev_predicate) | |
3927 | { | |
3928 | predicate p; | |
3929 | ||
3930 | if (!*hint) | |
3931 | return; | |
3932 | p = (*hint)->remap_after_inlining | |
40a777e8 | 3933 | (info, params_summary, callee_info, |
27d020cf JH |
3934 | operand_map, offset_map, |
3935 | possible_truths, *toplev_predicate); | |
3936 | if (p != false && p != true) | |
3937 | { | |
3938 | if (!*hint) | |
3939 | set_hint_predicate (hint, p); | |
3940 | else | |
3941 | **hint &= p; | |
3942 | } | |
3943 | } | |
3944 | ||
3945 | /* We inlined EDGE. Update summary of the function we inlined into. */ | |
3946 | ||
3947 | void | |
0bceb671 | 3948 | ipa_merge_fn_summary_after_inlining (struct cgraph_edge *edge) |
27d020cf | 3949 | { |
56f62793 | 3950 | ipa_fn_summary *callee_info = ipa_fn_summaries->get (edge->callee); |
a62bfab5 ML |
3951 | struct cgraph_node *to = (edge->caller->inlined_to |
3952 | ? edge->caller->inlined_to : edge->caller); | |
99b1c316 | 3953 | class ipa_fn_summary *info = ipa_fn_summaries->get (to); |
27d020cf JH |
3954 | clause_t clause = 0; /* not_inline is known to be false. */ |
3955 | size_time_entry *e; | |
f658ad30 JH |
3956 | auto_vec<int, 8> operand_map; |
3957 | auto_vec<int, 8> offset_map; | |
27d020cf JH |
3958 | int i; |
3959 | predicate toplev_predicate; | |
99b1c316 | 3960 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
40a777e8 JH |
3961 | class ipa_node_params *params_summary = (ipa_node_params_sum |
3962 | ? IPA_NODE_REF (to) : NULL); | |
27d020cf JH |
3963 | |
3964 | if (es->predicate) | |
3965 | toplev_predicate = *es->predicate; | |
3966 | else | |
3967 | toplev_predicate = true; | |
3968 | ||
3969 | info->fp_expressions |= callee_info->fp_expressions; | |
3970 | ||
3971 | if (callee_info->conds) | |
b0d55476 JH |
3972 | { |
3973 | auto_vec<tree, 32> known_vals; | |
3974 | auto_vec<ipa_agg_value_set, 32> known_aggs; | |
3975 | evaluate_properties_for_edge (edge, true, &clause, NULL, | |
3976 | &known_vals, NULL, &known_aggs); | |
3977 | } | |
27d020cf JH |
3978 | if (ipa_node_params_sum && callee_info->conds) |
3979 | { | |
99b1c316 | 3980 | class ipa_edge_args *args = IPA_EDGE_REF (edge); |
5a0236f8 | 3981 | int count = args ? ipa_get_cs_argument_count (args) : 0; |
27d020cf JH |
3982 | int i; |
3983 | ||
3984 | if (count) | |
3985 | { | |
cb3874dc ML |
3986 | operand_map.safe_grow_cleared (count, true); |
3987 | offset_map.safe_grow_cleared (count, true); | |
27d020cf JH |
3988 | } |
3989 | for (i = 0; i < count; i++) | |
3990 | { | |
3991 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
3992 | int map = -1; | |
3993 | ||
3994 | /* TODO: handle non-NOPs when merging. */ | |
3995 | if (jfunc->type == IPA_JF_PASS_THROUGH) | |
3996 | { | |
3997 | if (ipa_get_jf_pass_through_operation (jfunc) == NOP_EXPR) | |
3998 | map = ipa_get_jf_pass_through_formal_id (jfunc); | |
3999 | if (!ipa_get_jf_pass_through_agg_preserved (jfunc)) | |
4000 | offset_map[i] = -1; | |
4001 | } | |
4002 | else if (jfunc->type == IPA_JF_ANCESTOR) | |
4003 | { | |
4004 | HOST_WIDE_INT offset = ipa_get_jf_ancestor_offset (jfunc); | |
4005 | if (offset >= 0 && offset < INT_MAX) | |
4006 | { | |
4007 | map = ipa_get_jf_ancestor_formal_id (jfunc); | |
4008 | if (!ipa_get_jf_ancestor_agg_preserved (jfunc)) | |
4009 | offset = -1; | |
4010 | offset_map[i] = offset; | |
4011 | } | |
4012 | } | |
4013 | operand_map[i] = map; | |
40a777e8 | 4014 | gcc_assert (map < ipa_get_param_count (params_summary)); |
27d020cf JH |
4015 | } |
4016 | } | |
83263ef5 | 4017 | sreal freq = edge->sreal_frequency (); |
27d020cf JH |
4018 | for (i = 0; vec_safe_iterate (callee_info->size_time_table, i, &e); i++) |
4019 | { | |
4020 | predicate p; | |
4021 | p = e->exec_predicate.remap_after_inlining | |
40a777e8 JH |
4022 | (info, params_summary, |
4023 | callee_info, operand_map, | |
27d020cf JH |
4024 | offset_map, clause, |
4025 | toplev_predicate); | |
4026 | predicate nonconstp; | |
4027 | nonconstp = e->nonconst_predicate.remap_after_inlining | |
40a777e8 JH |
4028 | (info, params_summary, |
4029 | callee_info, operand_map, | |
27d020cf JH |
4030 | offset_map, clause, |
4031 | toplev_predicate); | |
4032 | if (p != false && nonconstp != false) | |
4033 | { | |
83263ef5 | 4034 | sreal add_time = ((sreal)e->time * freq); |
27d020cf JH |
4035 | int prob = e->nonconst_predicate.probability (callee_info->conds, |
4036 | clause, es->param); | |
fd4656a2 JH |
4037 | if (prob != REG_BR_PROB_BASE) |
4038 | add_time = add_time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
4039 | if (prob != REG_BR_PROB_BASE |
4040 | && dump_file && (dump_flags & TDF_DETAILS)) | |
4041 | { | |
4042 | fprintf (dump_file, "\t\tScaling time by probability:%f\n", | |
4043 | (double) prob / REG_BR_PROB_BASE); | |
4044 | } | |
4045 | info->account_size_time (e->size, add_time, p, nonconstp); | |
4046 | } | |
4047 | } | |
40a777e8 JH |
4048 | remap_edge_summaries (edge, edge->callee, info, params_summary, |
4049 | callee_info, operand_map, | |
27d020cf | 4050 | offset_map, clause, &toplev_predicate); |
40a777e8 | 4051 | remap_hint_predicate (info, params_summary, callee_info, |
27d020cf JH |
4052 | &callee_info->loop_iterations, |
4053 | operand_map, offset_map, clause, &toplev_predicate); | |
40a777e8 | 4054 | remap_hint_predicate (info, params_summary, callee_info, |
27d020cf JH |
4055 | &callee_info->loop_stride, |
4056 | operand_map, offset_map, clause, &toplev_predicate); | |
27d020cf | 4057 | |
f658ad30 JH |
4058 | HOST_WIDE_INT stack_frame_offset = ipa_get_stack_frame_offset (edge->callee); |
4059 | HOST_WIDE_INT peak = stack_frame_offset + callee_info->estimated_stack_size; | |
27d020cf | 4060 | |
f658ad30 JH |
4061 | if (info->estimated_stack_size < peak) |
4062 | info->estimated_stack_size = peak; | |
4063 | ||
4064 | inline_update_callee_summaries (edge->callee, es->loop_depth); | |
d2bcf46c JH |
4065 | if (info->call_size_time_table) |
4066 | { | |
4067 | int edge_size = 0; | |
4068 | sreal edge_time = 0; | |
4069 | ||
4070 | estimate_edge_size_and_time (edge, &edge_size, NULL, &edge_time, vNULL, | |
4071 | vNULL, vNULL, 0); | |
4072 | /* Unaccount size and time of the optimized out call. */ | |
4073 | info->account_size_time (-edge_size, -edge_time, | |
4074 | es->predicate ? *es->predicate : true, | |
4075 | es->predicate ? *es->predicate : true, | |
4076 | true); | |
4077 | /* Account new calls. */ | |
4078 | summarize_calls_size_and_time (edge->callee, info); | |
4079 | } | |
f658ad30 JH |
4080 | |
4081 | /* Free summaries that are not maintained for inline clones/edges. */ | |
4082 | ipa_call_summaries->remove (edge); | |
4083 | ipa_fn_summaries->remove (edge->callee); | |
7237f93e | 4084 | ipa_remove_from_growth_caches (edge); |
27d020cf JH |
4085 | } |
4086 | ||
f658ad30 | 4087 | /* For performance reasons ipa_merge_fn_summary_after_inlining is not updating |
d2bcf46c JH |
4088 | overall size and time. Recompute it. |
4089 | If RESET is true also recompute call_time_size_table. */ | |
27d020cf JH |
4090 | |
4091 | void | |
d2bcf46c | 4092 | ipa_update_overall_fn_summary (struct cgraph_node *node, bool reset) |
27d020cf | 4093 | { |
7237f93e JH |
4094 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
4095 | class ipa_size_summary *size_info = ipa_size_summaries->get (node); | |
27d020cf JH |
4096 | size_time_entry *e; |
4097 | int i; | |
4098 | ||
f658ad30 | 4099 | size_info->size = 0; |
27d020cf JH |
4100 | info->time = 0; |
4101 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) | |
4102 | { | |
f658ad30 | 4103 | size_info->size += e->size; |
27d020cf JH |
4104 | info->time += e->time; |
4105 | } | |
e3bd08dd | 4106 | info->min_size = (*info->size_time_table)[0].size; |
d2bcf46c JH |
4107 | if (reset) |
4108 | vec_free (info->call_size_time_table); | |
070e3489 JH |
4109 | if (node->callees || node->indirect_calls) |
4110 | estimate_calls_size_and_time (node, &size_info->size, &info->min_size, | |
4111 | &info->time, NULL, | |
4112 | ~(clause_t) (1 << predicate::false_condition), | |
4113 | vNULL, vNULL, vNULL); | |
e3bd08dd JH |
4114 | size_info->size = RDIV (size_info->size, ipa_fn_summary::size_scale); |
4115 | info->min_size = RDIV (info->min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
4116 | } |
4117 | ||
4118 | ||
4119 | /* This function performs intraprocedural analysis in NODE that is required to | |
4120 | inline indirect calls. */ | |
4121 | ||
4122 | static void | |
4123 | inline_indirect_intraprocedural_analysis (struct cgraph_node *node) | |
4124 | { | |
4125 | ipa_analyze_node (node); | |
4126 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
4127 | { | |
4128 | ipa_print_node_params (dump_file, node); | |
4129 | ipa_print_node_jump_functions (dump_file, node); | |
4130 | } | |
4131 | } | |
4132 | ||
4133 | ||
4134 | /* Note function body size. */ | |
4135 | ||
4136 | void | |
4137 | inline_analyze_function (struct cgraph_node *node) | |
4138 | { | |
4139 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
4140 | ||
4141 | if (dump_file) | |
d597b944 | 4142 | fprintf (dump_file, "\nAnalyzing function: %s\n", node->dump_name ()); |
27d020cf JH |
4143 | if (opt_for_fn (node->decl, optimize) && !node->thunk.thunk_p) |
4144 | inline_indirect_intraprocedural_analysis (node); | |
0bceb671 | 4145 | compute_fn_summary (node, false); |
27d020cf JH |
4146 | if (!optimize) |
4147 | { | |
4148 | struct cgraph_edge *e; | |
4149 | for (e = node->callees; e; e = e->next_callee) | |
4150 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4151 | for (e = node->indirect_calls; e; e = e->next_callee) | |
4152 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4153 | } | |
4154 | ||
4155 | pop_cfun (); | |
4156 | } | |
4157 | ||
4158 | ||
4159 | /* Called when new function is inserted to callgraph late. */ | |
4160 | ||
4161 | void | |
0bceb671 | 4162 | ipa_fn_summary_t::insert (struct cgraph_node *node, ipa_fn_summary *) |
27d020cf JH |
4163 | { |
4164 | inline_analyze_function (node); | |
4165 | } | |
4166 | ||
4167 | /* Note function body size. */ | |
4168 | ||
d2db2e6b JH |
4169 | static void |
4170 | ipa_fn_summary_generate (void) | |
27d020cf JH |
4171 | { |
4172 | struct cgraph_node *node; | |
4173 | ||
4174 | FOR_EACH_DEFINED_FUNCTION (node) | |
4175 | if (DECL_STRUCT_FUNCTION (node->decl)) | |
87f94429 | 4176 | node->versionable = tree_versionable_function_p (node->decl); |
27d020cf | 4177 | |
0bceb671 | 4178 | ipa_fn_summary_alloc (); |
27d020cf | 4179 | |
0bceb671 | 4180 | ipa_fn_summaries->enable_insertion_hook (); |
27d020cf JH |
4181 | |
4182 | ipa_register_cgraph_hooks (); | |
27d020cf JH |
4183 | |
4184 | FOR_EACH_DEFINED_FUNCTION (node) | |
29f1e2b1 JH |
4185 | if (!node->alias |
4186 | && (flag_generate_lto || flag_generate_offload|| flag_wpa | |
4187 | || opt_for_fn (node->decl, optimize))) | |
27d020cf JH |
4188 | inline_analyze_function (node); |
4189 | } | |
4190 | ||
4191 | ||
4192 | /* Write inline summary for edge E to OB. */ | |
4193 | ||
4194 | static void | |
99b1c316 | 4195 | read_ipa_call_summary (class lto_input_block *ib, struct cgraph_edge *e, |
ddfb1317 | 4196 | bool prevails) |
27d020cf | 4197 | { |
99b1c316 | 4198 | class ipa_call_summary *es = prevails |
ddfb1317 | 4199 | ? ipa_call_summaries->get_create (e) : NULL; |
27d020cf JH |
4200 | predicate p; |
4201 | int length, i; | |
4202 | ||
ddfb1317 JH |
4203 | int size = streamer_read_uhwi (ib); |
4204 | int time = streamer_read_uhwi (ib); | |
4205 | int depth = streamer_read_uhwi (ib); | |
4206 | ||
4207 | if (es) | |
4208 | { | |
4209 | es->call_stmt_size = size; | |
4210 | es->call_stmt_time = time; | |
4211 | es->loop_depth = depth; | |
4212 | } | |
0fab169b PK |
4213 | |
4214 | bitpack_d bp = streamer_read_bitpack (ib); | |
ddfb1317 JH |
4215 | if (es) |
4216 | es->is_return_callee_uncaptured = bp_unpack_value (&bp, 1); | |
4217 | else | |
4218 | bp_unpack_value (&bp, 1); | |
0fab169b | 4219 | |
27d020cf | 4220 | p.stream_in (ib); |
ddfb1317 JH |
4221 | if (es) |
4222 | edge_set_predicate (e, &p); | |
27d020cf | 4223 | length = streamer_read_uhwi (ib); |
ddfb1317 | 4224 | if (length && es && e->possibly_call_in_translation_unit_p ()) |
27d020cf | 4225 | { |
cb3874dc | 4226 | es->param.safe_grow_cleared (length, true); |
27d020cf | 4227 | for (i = 0; i < length; i++) |
b89e4559 JH |
4228 | { |
4229 | es->param[i].change_prob = streamer_read_uhwi (ib); | |
4230 | es->param[i].points_to_local_or_readonly_memory | |
4231 | = streamer_read_uhwi (ib); | |
4232 | } | |
27d020cf | 4233 | } |
ddfb1317 JH |
4234 | else |
4235 | { | |
4236 | for (i = 0; i < length; i++) | |
b89e4559 JH |
4237 | { |
4238 | streamer_read_uhwi (ib); | |
4239 | streamer_read_uhwi (ib); | |
4240 | } | |
ddfb1317 | 4241 | } |
27d020cf JH |
4242 | } |
4243 | ||
4244 | ||
4245 | /* Stream in inline summaries from the section. */ | |
4246 | ||
4247 | static void | |
4248 | inline_read_section (struct lto_file_decl_data *file_data, const char *data, | |
4249 | size_t len) | |
4250 | { | |
4251 | const struct lto_function_header *header = | |
4252 | (const struct lto_function_header *) data; | |
4253 | const int cfg_offset = sizeof (struct lto_function_header); | |
4254 | const int main_offset = cfg_offset + header->cfg_size; | |
4255 | const int string_offset = main_offset + header->main_size; | |
99b1c316 | 4256 | class data_in *data_in; |
27d020cf JH |
4257 | unsigned int i, count2, j; |
4258 | unsigned int f_count; | |
4259 | ||
4260 | lto_input_block ib ((const char *) data + main_offset, header->main_size, | |
4261 | file_data->mode_table); | |
4262 | ||
4263 | data_in = | |
4264 | lto_data_in_create (file_data, (const char *) data + string_offset, | |
4265 | header->string_size, vNULL); | |
4266 | f_count = streamer_read_uhwi (&ib); | |
4267 | for (i = 0; i < f_count; i++) | |
4268 | { | |
4269 | unsigned int index; | |
4270 | struct cgraph_node *node; | |
99b1c316 | 4271 | class ipa_fn_summary *info; |
40a777e8 | 4272 | class ipa_node_params *params_summary; |
f658ad30 | 4273 | class ipa_size_summary *size_info; |
27d020cf JH |
4274 | lto_symtab_encoder_t encoder; |
4275 | struct bitpack_d bp; | |
4276 | struct cgraph_edge *e; | |
4277 | predicate p; | |
4278 | ||
4279 | index = streamer_read_uhwi (&ib); | |
4280 | encoder = file_data->symtab_node_encoder; | |
4281 | node = dyn_cast<cgraph_node *> (lto_symtab_encoder_deref (encoder, | |
4282 | index)); | |
ddfb1317 | 4283 | info = node->prevailing_p () ? ipa_fn_summaries->get_create (node) : NULL; |
40a777e8 | 4284 | params_summary = node->prevailing_p () ? IPA_NODE_REF (node) : NULL; |
f658ad30 JH |
4285 | size_info = node->prevailing_p () |
4286 | ? ipa_size_summaries->get_create (node) : NULL; | |
27d020cf | 4287 | |
ddfb1317 JH |
4288 | int stack_size = streamer_read_uhwi (&ib); |
4289 | int size = streamer_read_uhwi (&ib); | |
4290 | sreal time = sreal::stream_in (&ib); | |
4291 | ||
4292 | if (info) | |
4293 | { | |
4294 | info->estimated_stack_size | |
f658ad30 JH |
4295 | = size_info->estimated_self_stack_size = stack_size; |
4296 | size_info->size = size_info->self_size = size; | |
ddfb1317 JH |
4297 | info->time = time; |
4298 | } | |
27d020cf JH |
4299 | |
4300 | bp = streamer_read_bitpack (&ib); | |
ddfb1317 JH |
4301 | if (info) |
4302 | { | |
4303 | info->inlinable = bp_unpack_value (&bp, 1); | |
4304 | info->fp_expressions = bp_unpack_value (&bp, 1); | |
4305 | } | |
4306 | else | |
4307 | { | |
4308 | bp_unpack_value (&bp, 1); | |
4309 | bp_unpack_value (&bp, 1); | |
4310 | } | |
27d020cf JH |
4311 | |
4312 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4313 | gcc_assert (!info || !info->conds); |
360386c7 JH |
4314 | if (info) |
4315 | vec_safe_reserve_exact (info->conds, count2); | |
27d020cf JH |
4316 | for (j = 0; j < count2; j++) |
4317 | { | |
4318 | struct condition c; | |
4307a485 | 4319 | unsigned int k, count3; |
27d020cf | 4320 | c.operand_num = streamer_read_uhwi (&ib); |
27d020cf | 4321 | c.code = (enum tree_code) streamer_read_uhwi (&ib); |
4307a485 | 4322 | c.type = stream_read_tree (&ib, data_in); |
27d020cf JH |
4323 | c.val = stream_read_tree (&ib, data_in); |
4324 | bp = streamer_read_bitpack (&ib); | |
4325 | c.agg_contents = bp_unpack_value (&bp, 1); | |
4326 | c.by_ref = bp_unpack_value (&bp, 1); | |
4327 | if (c.agg_contents) | |
4328 | c.offset = streamer_read_uhwi (&ib); | |
4307a485 | 4329 | count3 = streamer_read_uhwi (&ib); |
360386c7 JH |
4330 | c.param_ops = NULL; |
4331 | if (info) | |
4332 | vec_safe_reserve_exact (c.param_ops, count3); | |
40a777e8 JH |
4333 | if (params_summary) |
4334 | ipa_set_param_used_by_ipa_predicates | |
4335 | (params_summary, c.operand_num, true); | |
4307a485 FX |
4336 | for (k = 0; k < count3; k++) |
4337 | { | |
4338 | struct expr_eval_op op; | |
4339 | enum gimple_rhs_class rhs_class; | |
4340 | op.code = (enum tree_code) streamer_read_uhwi (&ib); | |
4341 | op.type = stream_read_tree (&ib, data_in); | |
4342 | switch (rhs_class = get_gimple_rhs_class (op.code)) | |
4343 | { | |
4344 | case GIMPLE_UNARY_RHS: | |
4345 | op.index = 0; | |
4346 | op.val[0] = NULL_TREE; | |
4347 | op.val[1] = NULL_TREE; | |
4348 | break; | |
4349 | ||
4350 | case GIMPLE_BINARY_RHS: | |
4351 | case GIMPLE_TERNARY_RHS: | |
4352 | bp = streamer_read_bitpack (&ib); | |
4353 | op.index = bp_unpack_value (&bp, 2); | |
4354 | op.val[0] = stream_read_tree (&ib, data_in); | |
4355 | if (rhs_class == GIMPLE_BINARY_RHS) | |
4356 | op.val[1] = NULL_TREE; | |
4357 | else | |
4358 | op.val[1] = stream_read_tree (&ib, data_in); | |
4359 | break; | |
4360 | ||
4361 | default: | |
4362 | fatal_error (UNKNOWN_LOCATION, | |
4363 | "invalid fnsummary in LTO stream"); | |
4364 | } | |
360386c7 JH |
4365 | if (info) |
4366 | c.param_ops->quick_push (op); | |
4307a485 | 4367 | } |
ddfb1317 | 4368 | if (info) |
360386c7 | 4369 | info->conds->quick_push (c); |
27d020cf JH |
4370 | } |
4371 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4372 | gcc_assert (!info || !info->size_time_table); |
360386c7 JH |
4373 | if (info && count2) |
4374 | vec_safe_reserve_exact (info->size_time_table, count2); | |
27d020cf JH |
4375 | for (j = 0; j < count2; j++) |
4376 | { | |
99b1c316 | 4377 | class size_time_entry e; |
27d020cf JH |
4378 | |
4379 | e.size = streamer_read_uhwi (&ib); | |
4380 | e.time = sreal::stream_in (&ib); | |
4381 | e.exec_predicate.stream_in (&ib); | |
4382 | e.nonconst_predicate.stream_in (&ib); | |
4383 | ||
ddfb1317 | 4384 | if (info) |
360386c7 | 4385 | info->size_time_table->quick_push (e); |
27d020cf JH |
4386 | } |
4387 | ||
4388 | p.stream_in (&ib); | |
ddfb1317 JH |
4389 | if (info) |
4390 | set_hint_predicate (&info->loop_iterations, p); | |
27d020cf | 4391 | p.stream_in (&ib); |
ddfb1317 JH |
4392 | if (info) |
4393 | set_hint_predicate (&info->loop_stride, p); | |
27d020cf | 4394 | for (e = node->callees; e; e = e->next_callee) |
ddfb1317 | 4395 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf | 4396 | for (e = node->indirect_calls; e; e = e->next_callee) |
ddfb1317 | 4397 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf JH |
4398 | } |
4399 | ||
0bceb671 | 4400 | lto_free_section_data (file_data, LTO_section_ipa_fn_summary, NULL, data, |
27d020cf JH |
4401 | len); |
4402 | lto_data_in_delete (data_in); | |
4403 | } | |
4404 | ||
4405 | ||
4406 | /* Read inline summary. Jump functions are shared among ipa-cp | |
4407 | and inliner, so when ipa-cp is active, we don't need to write them | |
4408 | twice. */ | |
4409 | ||
d2db2e6b JH |
4410 | static void |
4411 | ipa_fn_summary_read (void) | |
27d020cf JH |
4412 | { |
4413 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
4414 | struct lto_file_decl_data *file_data; | |
4415 | unsigned int j = 0; | |
4416 | ||
0bceb671 | 4417 | ipa_fn_summary_alloc (); |
27d020cf JH |
4418 | |
4419 | while ((file_data = file_data_vec[j++])) | |
4420 | { | |
4421 | size_t len; | |
3c56d8d8 ML |
4422 | const char *data |
4423 | = lto_get_summary_section_data (file_data, LTO_section_ipa_fn_summary, | |
4424 | &len); | |
27d020cf JH |
4425 | if (data) |
4426 | inline_read_section (file_data, data, len); | |
4427 | else | |
4428 | /* Fatal error here. We do not want to support compiling ltrans units | |
4429 | with different version of compiler or different flags than the WPA | |
4430 | unit, so this should never happen. */ | |
4431 | fatal_error (input_location, | |
4432 | "ipa inline summary is missing in input file"); | |
4433 | } | |
29f1e2b1 JH |
4434 | ipa_register_cgraph_hooks (); |
4435 | if (!flag_ipa_cp) | |
4436 | ipa_prop_read_jump_functions (); | |
27d020cf | 4437 | |
0bceb671 JH |
4438 | gcc_assert (ipa_fn_summaries); |
4439 | ipa_fn_summaries->enable_insertion_hook (); | |
27d020cf JH |
4440 | } |
4441 | ||
4442 | ||
4443 | /* Write inline summary for edge E to OB. */ | |
4444 | ||
4445 | static void | |
4446 | write_ipa_call_summary (struct output_block *ob, struct cgraph_edge *e) | |
4447 | { | |
99b1c316 | 4448 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
4449 | int i; |
4450 | ||
4451 | streamer_write_uhwi (ob, es->call_stmt_size); | |
4452 | streamer_write_uhwi (ob, es->call_stmt_time); | |
4453 | streamer_write_uhwi (ob, es->loop_depth); | |
0fab169b PK |
4454 | |
4455 | bitpack_d bp = bitpack_create (ob->main_stream); | |
4456 | bp_pack_value (&bp, es->is_return_callee_uncaptured, 1); | |
4457 | streamer_write_bitpack (&bp); | |
4458 | ||
27d020cf JH |
4459 | if (es->predicate) |
4460 | es->predicate->stream_out (ob); | |
4461 | else | |
4462 | streamer_write_uhwi (ob, 0); | |
4463 | streamer_write_uhwi (ob, es->param.length ()); | |
4464 | for (i = 0; i < (int) es->param.length (); i++) | |
b89e4559 JH |
4465 | { |
4466 | streamer_write_uhwi (ob, es->param[i].change_prob); | |
4467 | streamer_write_uhwi (ob, es->param[i].points_to_local_or_readonly_memory); | |
4468 | } | |
27d020cf JH |
4469 | } |
4470 | ||
4471 | ||
4472 | /* Write inline summary for node in SET. | |
4473 | Jump functions are shared among ipa-cp and inliner, so when ipa-cp is | |
4474 | active, we don't need to write them twice. */ | |
4475 | ||
d2db2e6b JH |
4476 | static void |
4477 | ipa_fn_summary_write (void) | |
27d020cf | 4478 | { |
0bceb671 | 4479 | struct output_block *ob = create_output_block (LTO_section_ipa_fn_summary); |
16570c12 | 4480 | lto_symtab_encoder_iterator lsei; |
27d020cf JH |
4481 | lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder; |
4482 | unsigned int count = 0; | |
27d020cf | 4483 | |
16570c12 JJ |
4484 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4485 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4486 | { |
16570c12 JJ |
4487 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4488 | if (cnode->definition && !cnode->alias) | |
27d020cf JH |
4489 | count++; |
4490 | } | |
4491 | streamer_write_uhwi (ob, count); | |
4492 | ||
16570c12 JJ |
4493 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4494 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4495 | { |
16570c12 JJ |
4496 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4497 | if (cnode->definition && !cnode->alias) | |
27d020cf | 4498 | { |
99b1c316 | 4499 | class ipa_fn_summary *info = ipa_fn_summaries->get (cnode); |
f658ad30 | 4500 | class ipa_size_summary *size_info = ipa_size_summaries->get (cnode); |
27d020cf JH |
4501 | struct bitpack_d bp; |
4502 | struct cgraph_edge *edge; | |
4503 | int i; | |
4504 | size_time_entry *e; | |
4505 | struct condition *c; | |
4506 | ||
4507 | streamer_write_uhwi (ob, lto_symtab_encoder_encode (encoder, cnode)); | |
f658ad30 JH |
4508 | streamer_write_hwi (ob, size_info->estimated_self_stack_size); |
4509 | streamer_write_hwi (ob, size_info->self_size); | |
27d020cf JH |
4510 | info->time.stream_out (ob); |
4511 | bp = bitpack_create (ob->main_stream); | |
4512 | bp_pack_value (&bp, info->inlinable, 1); | |
5e9d6aa4 | 4513 | bp_pack_value (&bp, false, 1); |
27d020cf JH |
4514 | bp_pack_value (&bp, info->fp_expressions, 1); |
4515 | streamer_write_bitpack (&bp); | |
4516 | streamer_write_uhwi (ob, vec_safe_length (info->conds)); | |
4517 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
4518 | { | |
4307a485 FX |
4519 | int j; |
4520 | struct expr_eval_op *op; | |
4521 | ||
27d020cf | 4522 | streamer_write_uhwi (ob, c->operand_num); |
27d020cf | 4523 | streamer_write_uhwi (ob, c->code); |
4307a485 | 4524 | stream_write_tree (ob, c->type, true); |
27d020cf JH |
4525 | stream_write_tree (ob, c->val, true); |
4526 | bp = bitpack_create (ob->main_stream); | |
4527 | bp_pack_value (&bp, c->agg_contents, 1); | |
4528 | bp_pack_value (&bp, c->by_ref, 1); | |
4529 | streamer_write_bitpack (&bp); | |
4530 | if (c->agg_contents) | |
4531 | streamer_write_uhwi (ob, c->offset); | |
4307a485 FX |
4532 | streamer_write_uhwi (ob, vec_safe_length (c->param_ops)); |
4533 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
4534 | { | |
4535 | streamer_write_uhwi (ob, op->code); | |
4536 | stream_write_tree (ob, op->type, true); | |
4537 | if (op->val[0]) | |
4538 | { | |
4539 | bp = bitpack_create (ob->main_stream); | |
4540 | bp_pack_value (&bp, op->index, 2); | |
4541 | streamer_write_bitpack (&bp); | |
4542 | stream_write_tree (ob, op->val[0], true); | |
4543 | if (op->val[1]) | |
4544 | stream_write_tree (ob, op->val[1], true); | |
4545 | } | |
4546 | } | |
27d020cf JH |
4547 | } |
4548 | streamer_write_uhwi (ob, vec_safe_length (info->size_time_table)); | |
4549 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) | |
4550 | { | |
4551 | streamer_write_uhwi (ob, e->size); | |
4552 | e->time.stream_out (ob); | |
4553 | e->exec_predicate.stream_out (ob); | |
4554 | e->nonconst_predicate.stream_out (ob); | |
4555 | } | |
4556 | if (info->loop_iterations) | |
4557 | info->loop_iterations->stream_out (ob); | |
4558 | else | |
4559 | streamer_write_uhwi (ob, 0); | |
4560 | if (info->loop_stride) | |
4561 | info->loop_stride->stream_out (ob); | |
4562 | else | |
4563 | streamer_write_uhwi (ob, 0); | |
27d020cf JH |
4564 | for (edge = cnode->callees; edge; edge = edge->next_callee) |
4565 | write_ipa_call_summary (ob, edge); | |
4566 | for (edge = cnode->indirect_calls; edge; edge = edge->next_callee) | |
4567 | write_ipa_call_summary (ob, edge); | |
4568 | } | |
4569 | } | |
4570 | streamer_write_char_stream (ob->main_stream, 0); | |
4571 | produce_asm (ob, NULL); | |
4572 | destroy_output_block (ob); | |
4573 | ||
29f1e2b1 | 4574 | if (!flag_ipa_cp) |
27d020cf JH |
4575 | ipa_prop_write_jump_functions (); |
4576 | } | |
4577 | ||
4578 | ||
f658ad30 | 4579 | /* Release function summary. */ |
27d020cf JH |
4580 | |
4581 | void | |
d2db2e6b | 4582 | ipa_free_fn_summary (void) |
27d020cf | 4583 | { |
27d020cf JH |
4584 | if (!ipa_call_summaries) |
4585 | return; | |
ddf628e4 | 4586 | ggc_delete (ipa_fn_summaries); |
0bceb671 | 4587 | ipa_fn_summaries = NULL; |
27d020cf JH |
4588 | delete ipa_call_summaries; |
4589 | ipa_call_summaries = NULL; | |
4590 | edge_predicate_pool.release (); | |
f658ad30 JH |
4591 | /* During IPA this is one of largest datastructures to release. */ |
4592 | if (flag_wpa) | |
4593 | ggc_trim (); | |
4594 | } | |
4595 | ||
4596 | /* Release function summary. */ | |
4597 | ||
4598 | void | |
4599 | ipa_free_size_summary (void) | |
4600 | { | |
4601 | if (!ipa_size_summaries) | |
4602 | return; | |
78cd68c0 | 4603 | delete ipa_size_summaries; |
f658ad30 | 4604 | ipa_size_summaries = NULL; |
27d020cf | 4605 | } |
d2db2e6b JH |
4606 | |
4607 | namespace { | |
4608 | ||
4609 | const pass_data pass_data_local_fn_summary = | |
4610 | { | |
4611 | GIMPLE_PASS, /* type */ | |
4612 | "local-fnsummary", /* name */ | |
4613 | OPTGROUP_INLINE, /* optinfo_flags */ | |
4614 | TV_INLINE_PARAMETERS, /* tv_id */ | |
4615 | 0, /* properties_required */ | |
4616 | 0, /* properties_provided */ | |
4617 | 0, /* properties_destroyed */ | |
4618 | 0, /* todo_flags_start */ | |
4619 | 0, /* todo_flags_finish */ | |
4620 | }; | |
4621 | ||
4622 | class pass_local_fn_summary : public gimple_opt_pass | |
4623 | { | |
4624 | public: | |
4625 | pass_local_fn_summary (gcc::context *ctxt) | |
4626 | : gimple_opt_pass (pass_data_local_fn_summary, ctxt) | |
4627 | {} | |
4628 | ||
4629 | /* opt_pass methods: */ | |
4630 | opt_pass * clone () { return new pass_local_fn_summary (m_ctxt); } | |
4631 | virtual unsigned int execute (function *) | |
4632 | { | |
4633 | return compute_fn_summary_for_current (); | |
4634 | } | |
4635 | ||
4636 | }; // class pass_local_fn_summary | |
4637 | ||
4638 | } // anon namespace | |
4639 | ||
4640 | gimple_opt_pass * | |
4641 | make_pass_local_fn_summary (gcc::context *ctxt) | |
4642 | { | |
4643 | return new pass_local_fn_summary (ctxt); | |
4644 | } | |
4645 | ||
4646 | ||
4647 | /* Free inline summary. */ | |
4648 | ||
4649 | namespace { | |
4650 | ||
4651 | const pass_data pass_data_ipa_free_fn_summary = | |
4652 | { | |
4653 | SIMPLE_IPA_PASS, /* type */ | |
4654 | "free-fnsummary", /* name */ | |
4655 | OPTGROUP_NONE, /* optinfo_flags */ | |
4656 | TV_IPA_FREE_INLINE_SUMMARY, /* tv_id */ | |
4657 | 0, /* properties_required */ | |
4658 | 0, /* properties_provided */ | |
4659 | 0, /* properties_destroyed */ | |
4660 | 0, /* todo_flags_start */ | |
442db276 | 4661 | 0, /* todo_flags_finish */ |
d2db2e6b JH |
4662 | }; |
4663 | ||
4664 | class pass_ipa_free_fn_summary : public simple_ipa_opt_pass | |
4665 | { | |
4666 | public: | |
4667 | pass_ipa_free_fn_summary (gcc::context *ctxt) | |
442db276 JJ |
4668 | : simple_ipa_opt_pass (pass_data_ipa_free_fn_summary, ctxt), |
4669 | small_p (false) | |
d2db2e6b JH |
4670 | {} |
4671 | ||
4672 | /* opt_pass methods: */ | |
442db276 JJ |
4673 | opt_pass *clone () { return new pass_ipa_free_fn_summary (m_ctxt); } |
4674 | void set_pass_param (unsigned int n, bool param) | |
4675 | { | |
4676 | gcc_assert (n == 0); | |
4677 | small_p = param; | |
4678 | } | |
f658ad30 | 4679 | virtual bool gate (function *) { return true; } |
d2db2e6b JH |
4680 | virtual unsigned int execute (function *) |
4681 | { | |
4682 | ipa_free_fn_summary (); | |
f658ad30 JH |
4683 | if (!flag_wpa) |
4684 | ipa_free_size_summary (); | |
12485662 | 4685 | return 0; |
d2db2e6b JH |
4686 | } |
4687 | ||
442db276 JJ |
4688 | private: |
4689 | bool small_p; | |
d2db2e6b JH |
4690 | }; // class pass_ipa_free_fn_summary |
4691 | ||
4692 | } // anon namespace | |
4693 | ||
4694 | simple_ipa_opt_pass * | |
4695 | make_pass_ipa_free_fn_summary (gcc::context *ctxt) | |
4696 | { | |
4697 | return new pass_ipa_free_fn_summary (ctxt); | |
4698 | } | |
4699 | ||
4700 | namespace { | |
4701 | ||
4702 | const pass_data pass_data_ipa_fn_summary = | |
4703 | { | |
4704 | IPA_PASS, /* type */ | |
4705 | "fnsummary", /* name */ | |
4706 | OPTGROUP_INLINE, /* optinfo_flags */ | |
66447ef0 | 4707 | TV_IPA_FNSUMMARY, /* tv_id */ |
d2db2e6b JH |
4708 | 0, /* properties_required */ |
4709 | 0, /* properties_provided */ | |
4710 | 0, /* properties_destroyed */ | |
4711 | 0, /* todo_flags_start */ | |
4712 | ( TODO_dump_symtab ), /* todo_flags_finish */ | |
4713 | }; | |
4714 | ||
4715 | class pass_ipa_fn_summary : public ipa_opt_pass_d | |
4716 | { | |
4717 | public: | |
4718 | pass_ipa_fn_summary (gcc::context *ctxt) | |
4719 | : ipa_opt_pass_d (pass_data_ipa_fn_summary, ctxt, | |
4720 | ipa_fn_summary_generate, /* generate_summary */ | |
4721 | ipa_fn_summary_write, /* write_summary */ | |
4722 | ipa_fn_summary_read, /* read_summary */ | |
4723 | NULL, /* write_optimization_summary */ | |
4724 | NULL, /* read_optimization_summary */ | |
4725 | NULL, /* stmt_fixup */ | |
4726 | 0, /* function_transform_todo_flags_start */ | |
4727 | NULL, /* function_transform */ | |
4728 | NULL) /* variable_transform */ | |
4729 | {} | |
4730 | ||
4731 | /* opt_pass methods: */ | |
4732 | virtual unsigned int execute (function *) { return 0; } | |
4733 | ||
4734 | }; // class pass_ipa_fn_summary | |
4735 | ||
4736 | } // anon namespace | |
4737 | ||
4738 | ipa_opt_pass_d * | |
4739 | make_pass_ipa_fn_summary (gcc::context *ctxt) | |
4740 | { | |
4741 | return new pass_ipa_fn_summary (ctxt); | |
4742 | } | |
de4381a4 DM |
4743 | |
4744 | /* Reset all state within ipa-fnsummary.c so that we can rerun the compiler | |
4745 | within the same process. For use by toplev::finalize. */ | |
4746 | ||
4747 | void | |
4748 | ipa_fnsummary_c_finalize (void) | |
4749 | { | |
4750 | ipa_free_fn_summary (); | |
4751 | } |