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27d020cf | 1 | /* Function summary pass. |
8d9254fc | 2 | Copyright (C) 2003-2020 Free Software Foundation, Inc. |
27d020cf JH |
3 | Contributed by Jan Hubicka |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* Analysis of function bodies used by inter-procedural passes | |
22 | ||
23 | We estimate for each function | |
24 | - function body size and size after specializing into given context | |
25 | - average function execution time in a given context | |
26 | - function frame size | |
27 | For each call | |
28 | - call statement size, time and how often the parameters change | |
29 | ||
0bceb671 | 30 | ipa_fn_summary data structures store above information locally (i.e. |
27d020cf JH |
31 | parameters of the function itself) and globally (i.e. parameters of |
32 | the function created by applying all the inline decisions already | |
33 | present in the callgraph). | |
34 | ||
0bceb671 | 35 | We provide access to the ipa_fn_summary data structure and |
27d020cf JH |
36 | basic logic updating the parameters when inlining is performed. |
37 | ||
38 | The summaries are context sensitive. Context means | |
39 | 1) partial assignment of known constant values of operands | |
40 | 2) whether function is inlined into the call or not. | |
41 | It is easy to add more variants. To represent function size and time | |
42 | that depends on context (i.e. it is known to be optimized away when | |
43 | context is known either by inlining or from IP-CP and cloning), | |
44 | we use predicates. | |
45 | ||
46 | estimate_edge_size_and_time can be used to query | |
0bceb671 | 47 | function size/time in the given context. ipa_merge_fn_summary_after_inlining merges |
27d020cf JH |
48 | properties of caller and callee after inlining. |
49 | ||
50 | Finally pass_inline_parameters is exported. This is used to drive | |
51 | computation of function parameters used by the early inliner. IPA | |
52 | inlined performs analysis via its analyze_function method. */ | |
53 | ||
54 | #include "config.h" | |
85245bda | 55 | #define INCLUDE_VECTOR |
27d020cf JH |
56 | #include "system.h" |
57 | #include "coretypes.h" | |
58 | #include "backend.h" | |
59 | #include "tree.h" | |
60 | #include "gimple.h" | |
61 | #include "alloc-pool.h" | |
62 | #include "tree-pass.h" | |
63 | #include "ssa.h" | |
64 | #include "tree-streamer.h" | |
65 | #include "cgraph.h" | |
66 | #include "diagnostic.h" | |
67 | #include "fold-const.h" | |
68 | #include "print-tree.h" | |
69 | #include "tree-inline.h" | |
70 | #include "gimple-pretty-print.h" | |
27d020cf JH |
71 | #include "cfganal.h" |
72 | #include "gimple-iterator.h" | |
73 | #include "tree-cfg.h" | |
74 | #include "tree-ssa-loop-niter.h" | |
75 | #include "tree-ssa-loop.h" | |
76 | #include "symbol-summary.h" | |
77 | #include "ipa-prop.h" | |
78 | #include "ipa-fnsummary.h" | |
79 | #include "cfgloop.h" | |
80 | #include "tree-scalar-evolution.h" | |
81 | #include "ipa-utils.h" | |
27d020cf JH |
82 | #include "cfgexpand.h" |
83 | #include "gimplify.h" | |
314e6352 ML |
84 | #include "stringpool.h" |
85 | #include "attribs.h" | |
ac0573de | 86 | #include "tree-into-ssa.h" |
27d020cf JH |
87 | |
88 | /* Summaries. */ | |
db30281f | 89 | fast_function_summary <ipa_fn_summary *, va_gc> *ipa_fn_summaries; |
f658ad30 | 90 | fast_function_summary <ipa_size_summary *, va_heap> *ipa_size_summaries; |
db30281f | 91 | fast_call_summary <ipa_call_summary *, va_heap> *ipa_call_summaries; |
27d020cf JH |
92 | |
93 | /* Edge predicates goes here. */ | |
94 | static object_allocator<predicate> edge_predicate_pool ("edge predicates"); | |
95 | ||
96 | ||
0bceb671 | 97 | /* Dump IPA hints. */ |
27d020cf | 98 | void |
0bceb671 | 99 | ipa_dump_hints (FILE *f, ipa_hints hints) |
27d020cf JH |
100 | { |
101 | if (!hints) | |
102 | return; | |
0bceb671 | 103 | fprintf (f, "IPA hints:"); |
27d020cf JH |
104 | if (hints & INLINE_HINT_indirect_call) |
105 | { | |
106 | hints &= ~INLINE_HINT_indirect_call; | |
107 | fprintf (f, " indirect_call"); | |
108 | } | |
109 | if (hints & INLINE_HINT_loop_iterations) | |
110 | { | |
111 | hints &= ~INLINE_HINT_loop_iterations; | |
112 | fprintf (f, " loop_iterations"); | |
113 | } | |
114 | if (hints & INLINE_HINT_loop_stride) | |
115 | { | |
116 | hints &= ~INLINE_HINT_loop_stride; | |
117 | fprintf (f, " loop_stride"); | |
118 | } | |
119 | if (hints & INLINE_HINT_same_scc) | |
120 | { | |
121 | hints &= ~INLINE_HINT_same_scc; | |
122 | fprintf (f, " same_scc"); | |
123 | } | |
124 | if (hints & INLINE_HINT_in_scc) | |
125 | { | |
126 | hints &= ~INLINE_HINT_in_scc; | |
127 | fprintf (f, " in_scc"); | |
128 | } | |
129 | if (hints & INLINE_HINT_cross_module) | |
130 | { | |
131 | hints &= ~INLINE_HINT_cross_module; | |
132 | fprintf (f, " cross_module"); | |
133 | } | |
134 | if (hints & INLINE_HINT_declared_inline) | |
135 | { | |
136 | hints &= ~INLINE_HINT_declared_inline; | |
137 | fprintf (f, " declared_inline"); | |
138 | } | |
27d020cf JH |
139 | if (hints & INLINE_HINT_known_hot) |
140 | { | |
141 | hints &= ~INLINE_HINT_known_hot; | |
142 | fprintf (f, " known_hot"); | |
143 | } | |
144 | gcc_assert (!hints); | |
145 | } | |
146 | ||
147 | ||
148 | /* Record SIZE and TIME to SUMMARY. | |
149 | The accounted code will be executed when EXEC_PRED is true. | |
956d615d | 150 | When NONCONST_PRED is false the code will evaluate to constant and |
070e3489 JH |
151 | will get optimized out in specialized clones of the function. |
152 | If CALL is true account to call_size_time_table rather than | |
153 | size_time_table. */ | |
27d020cf JH |
154 | |
155 | void | |
0bceb671 | 156 | ipa_fn_summary::account_size_time (int size, sreal time, |
27d020cf | 157 | const predicate &exec_pred, |
070e3489 JH |
158 | const predicate &nonconst_pred_in, |
159 | bool call) | |
27d020cf JH |
160 | { |
161 | size_time_entry *e; | |
162 | bool found = false; | |
163 | int i; | |
164 | predicate nonconst_pred; | |
070e3489 JH |
165 | vec<size_time_entry, va_gc> *table = call |
166 | ? call_size_time_table : size_time_table; | |
27d020cf JH |
167 | |
168 | if (exec_pred == false) | |
169 | return; | |
170 | ||
171 | nonconst_pred = nonconst_pred_in & exec_pred; | |
172 | ||
173 | if (nonconst_pred == false) | |
174 | return; | |
175 | ||
956d615d | 176 | /* We need to create initial empty unconditional clause, but otherwise |
27d020cf | 177 | we don't need to account empty times and sizes. */ |
070e3489 | 178 | if (!size && time == 0 && table) |
27d020cf JH |
179 | return; |
180 | ||
956d615d | 181 | /* Only for calls we are unaccounting what we previously recorded. */ |
d2bcf46c | 182 | gcc_checking_assert (time >= 0 || call); |
27d020cf | 183 | |
070e3489 | 184 | for (i = 0; vec_safe_iterate (table, i, &e); i++) |
27d020cf JH |
185 | if (e->exec_predicate == exec_pred |
186 | && e->nonconst_predicate == nonconst_pred) | |
187 | { | |
188 | found = true; | |
189 | break; | |
190 | } | |
070e3489 | 191 | if (i == max_size_time_table_size) |
27d020cf JH |
192 | { |
193 | i = 0; | |
194 | found = true; | |
070e3489 | 195 | e = &(*table)[0]; |
27d020cf JH |
196 | if (dump_file && (dump_flags & TDF_DETAILS)) |
197 | fprintf (dump_file, | |
198 | "\t\tReached limit on number of entries, " | |
199 | "ignoring the predicate."); | |
200 | } | |
201 | if (dump_file && (dump_flags & TDF_DETAILS) && (time != 0 || size)) | |
202 | { | |
203 | fprintf (dump_file, | |
204 | "\t\tAccounting size:%3.2f, time:%3.2f on %spredicate exec:", | |
0bceb671 | 205 | ((double) size) / ipa_fn_summary::size_scale, |
27d020cf JH |
206 | (time.to_double ()), found ? "" : "new "); |
207 | exec_pred.dump (dump_file, conds, 0); | |
208 | if (exec_pred != nonconst_pred) | |
209 | { | |
210 | fprintf (dump_file, " nonconst:"); | |
211 | nonconst_pred.dump (dump_file, conds); | |
212 | } | |
213 | else | |
214 | fprintf (dump_file, "\n"); | |
215 | } | |
216 | if (!found) | |
217 | { | |
99b1c316 | 218 | class size_time_entry new_entry; |
27d020cf JH |
219 | new_entry.size = size; |
220 | new_entry.time = time; | |
221 | new_entry.exec_predicate = exec_pred; | |
222 | new_entry.nonconst_predicate = nonconst_pred; | |
070e3489 JH |
223 | if (call) |
224 | vec_safe_push (call_size_time_table, new_entry); | |
225 | else | |
226 | vec_safe_push (size_time_table, new_entry); | |
27d020cf JH |
227 | } |
228 | else | |
229 | { | |
230 | e->size += size; | |
231 | e->time += time; | |
dd86c8da | 232 | /* FIXME: PR bootstrap/92653 gcc_checking_assert (e->time >= -1); */ |
d2bcf46c JH |
233 | /* Tolerate small roundoff issues. */ |
234 | if (e->time < 0) | |
235 | e->time = 0; | |
27d020cf JH |
236 | } |
237 | } | |
238 | ||
956d615d | 239 | /* We proved E to be unreachable, redirect it to __builtin_unreachable. */ |
27d020cf JH |
240 | |
241 | static struct cgraph_edge * | |
242 | redirect_to_unreachable (struct cgraph_edge *e) | |
243 | { | |
244 | struct cgraph_node *callee = !e->inline_failed ? e->callee : NULL; | |
245 | struct cgraph_node *target = cgraph_node::get_create | |
246 | (builtin_decl_implicit (BUILT_IN_UNREACHABLE)); | |
247 | ||
248 | if (e->speculative) | |
27c5a177 | 249 | e = cgraph_edge::resolve_speculation (e, target->decl); |
27d020cf | 250 | else if (!e->callee) |
27c5a177 | 251 | e = cgraph_edge::make_direct (e, target); |
27d020cf JH |
252 | else |
253 | e->redirect_callee (target); | |
99b1c316 | 254 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf | 255 | e->inline_failed = CIF_UNREACHABLE; |
3995f3a2 | 256 | e->count = profile_count::zero (); |
27d020cf JH |
257 | es->call_stmt_size = 0; |
258 | es->call_stmt_time = 0; | |
259 | if (callee) | |
260 | callee->remove_symbol_and_inline_clones (); | |
261 | return e; | |
262 | } | |
263 | ||
264 | /* Set predicate for edge E. */ | |
265 | ||
266 | static void | |
267 | edge_set_predicate (struct cgraph_edge *e, predicate *predicate) | |
268 | { | |
269 | /* If the edge is determined to be never executed, redirect it | |
0bceb671 JH |
270 | to BUILTIN_UNREACHABLE to make it clear to IPA passes the call will |
271 | be optimized out. */ | |
27d020cf JH |
272 | if (predicate && *predicate == false |
273 | /* When handling speculative edges, we need to do the redirection | |
274 | just once. Do it always on the direct edge, so we do not | |
275 | attempt to resolve speculation while duplicating the edge. */ | |
276 | && (!e->speculative || e->callee)) | |
277 | e = redirect_to_unreachable (e); | |
278 | ||
99b1c316 | 279 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
280 | if (predicate && *predicate != true) |
281 | { | |
282 | if (!es->predicate) | |
283 | es->predicate = edge_predicate_pool.allocate (); | |
284 | *es->predicate = *predicate; | |
285 | } | |
286 | else | |
287 | { | |
288 | if (es->predicate) | |
289 | edge_predicate_pool.remove (es->predicate); | |
290 | es->predicate = NULL; | |
291 | } | |
292 | } | |
293 | ||
294 | /* Set predicate for hint *P. */ | |
295 | ||
296 | static void | |
297 | set_hint_predicate (predicate **p, predicate new_predicate) | |
298 | { | |
299 | if (new_predicate == false || new_predicate == true) | |
300 | { | |
301 | if (*p) | |
302 | edge_predicate_pool.remove (*p); | |
303 | *p = NULL; | |
304 | } | |
305 | else | |
306 | { | |
307 | if (!*p) | |
308 | *p = edge_predicate_pool.allocate (); | |
309 | **p = new_predicate; | |
310 | } | |
311 | } | |
312 | ||
67ce9099 MJ |
313 | /* Find if NEW_PREDICATE is already in V and if so, increment its freq. |
314 | Otherwise add a new item to the vector with this predicate and frerq equal | |
315 | to add_freq, unless the number of predicates would exceed MAX_NUM_PREDICATES | |
316 | in which case the function does nothing. */ | |
317 | ||
318 | static void | |
319 | add_freqcounting_predicate (vec<ipa_freqcounting_predicate, va_gc> **v, | |
320 | const predicate &new_predicate, sreal add_freq, | |
321 | unsigned max_num_predicates) | |
322 | { | |
323 | if (new_predicate == false || new_predicate == true) | |
324 | return; | |
325 | ipa_freqcounting_predicate *f; | |
326 | for (int i = 0; vec_safe_iterate (*v, i, &f); i++) | |
327 | if (new_predicate == f->predicate) | |
328 | { | |
329 | f->freq += add_freq; | |
330 | return; | |
331 | } | |
332 | if (vec_safe_length (*v) >= max_num_predicates) | |
333 | /* Too many different predicates to account for. */ | |
334 | return; | |
335 | ||
336 | ipa_freqcounting_predicate fcp; | |
337 | fcp.predicate = NULL; | |
338 | set_hint_predicate (&fcp.predicate, new_predicate); | |
339 | fcp.freq = add_freq; | |
340 | vec_safe_push (*v, fcp); | |
341 | return; | |
342 | } | |
27d020cf | 343 | |
956d615d | 344 | /* Compute what conditions may or may not hold given information about |
27d020cf | 345 | parameters. RET_CLAUSE returns truths that may hold in a specialized copy, |
956d615d | 346 | while RET_NONSPEC_CLAUSE returns truths that may hold in an nonspecialized |
27d020cf JH |
347 | copy when called in a given context. It is a bitmask of conditions. Bit |
348 | 0 means that condition is known to be false, while bit 1 means that condition | |
349 | may or may not be true. These differs - for example NOT_INLINED condition | |
67914693 | 350 | is always false in the second and also builtin_constant_p tests cannot use |
27d020cf JH |
351 | the fact that parameter is indeed a constant. |
352 | ||
9d5af1db MJ |
353 | When INLINE_P is true, assume that we are inlining. AVAL contains known |
354 | information about argument values. The function does not modify its content | |
355 | and so AVALs could also be of type ipa_call_arg_values but so far all | |
356 | callers work with the auto version and so we avoid the conversion for | |
357 | convenience. | |
27d020cf | 358 | |
9d5af1db | 359 | ERROR_MARK value of an argument means compile time invariant. */ |
27d020cf JH |
360 | |
361 | static void | |
362 | evaluate_conditions_for_known_args (struct cgraph_node *node, | |
363 | bool inline_p, | |
9d5af1db | 364 | ipa_auto_call_arg_values *avals, |
27d020cf JH |
365 | clause_t *ret_clause, |
366 | clause_t *ret_nonspec_clause) | |
367 | { | |
368 | clause_t clause = inline_p ? 0 : 1 << predicate::not_inlined_condition; | |
369 | clause_t nonspec_clause = 1 << predicate::not_inlined_condition; | |
99b1c316 | 370 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
27d020cf JH |
371 | int i; |
372 | struct condition *c; | |
373 | ||
374 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
375 | { | |
b0d55476 | 376 | tree val = NULL; |
27d020cf | 377 | tree res; |
4307a485 FX |
378 | int j; |
379 | struct expr_eval_op *op; | |
27d020cf JH |
380 | |
381 | /* We allow call stmt to have fewer arguments than the callee function | |
382 | (especially for K&R style programs). So bound check here (we assume | |
9d5af1db MJ |
383 | m_known_aggs vector is either empty or has the same length as |
384 | m_known_vals). */ | |
385 | gcc_checking_assert (!avals->m_known_aggs.length () | |
386 | || !avals->m_known_vals.length () | |
387 | || (avals->m_known_vals.length () | |
388 | == avals->m_known_aggs.length ())); | |
27d020cf JH |
389 | |
390 | if (c->agg_contents) | |
391 | { | |
27d020cf JH |
392 | if (c->code == predicate::changed |
393 | && !c->by_ref | |
9d5af1db | 394 | && (avals->safe_sval_at(c->operand_num) == error_mark_node)) |
27d020cf JH |
395 | continue; |
396 | ||
9d5af1db | 397 | if (ipa_agg_value_set *agg = avals->safe_aggval_at (c->operand_num)) |
27d020cf | 398 | { |
9d5af1db MJ |
399 | tree sval = avals->safe_sval_at (c->operand_num); |
400 | val = ipa_find_agg_cst_for_param (agg, sval, c->offset, | |
401 | c->by_ref); | |
27d020cf JH |
402 | } |
403 | else | |
404 | val = NULL_TREE; | |
405 | } | |
9d5af1db | 406 | else |
27d020cf | 407 | { |
9d5af1db MJ |
408 | val = avals->safe_sval_at (c->operand_num); |
409 | if (val && val == error_mark_node && c->code != predicate::changed) | |
27d020cf JH |
410 | val = NULL_TREE; |
411 | } | |
412 | ||
68718e8e JH |
413 | if (!val |
414 | && (c->code == predicate::changed | |
415 | || c->code == predicate::is_not_constant)) | |
27d020cf JH |
416 | { |
417 | clause |= 1 << (i + predicate::first_dynamic_condition); | |
418 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
419 | continue; | |
420 | } | |
421 | if (c->code == predicate::changed) | |
422 | { | |
423 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
424 | continue; | |
425 | } | |
426 | ||
27d020cf JH |
427 | if (c->code == predicate::is_not_constant) |
428 | { | |
429 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
430 | continue; | |
431 | } | |
432 | ||
68718e8e | 433 | if (val && TYPE_SIZE (c->type) == TYPE_SIZE (TREE_TYPE (val))) |
4307a485 | 434 | { |
68718e8e JH |
435 | if (c->type != TREE_TYPE (val)) |
436 | val = fold_unary (VIEW_CONVERT_EXPR, c->type, val); | |
437 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
438 | { | |
439 | if (!val) | |
440 | break; | |
441 | if (!op->val[0]) | |
442 | val = fold_unary (op->code, op->type, val); | |
443 | else if (!op->val[1]) | |
444 | val = fold_binary (op->code, op->type, | |
445 | op->index ? op->val[0] : val, | |
446 | op->index ? val : op->val[0]); | |
447 | else if (op->index == 0) | |
448 | val = fold_ternary (op->code, op->type, | |
449 | val, op->val[0], op->val[1]); | |
450 | else if (op->index == 1) | |
451 | val = fold_ternary (op->code, op->type, | |
452 | op->val[0], val, op->val[1]); | |
453 | else if (op->index == 2) | |
454 | val = fold_ternary (op->code, op->type, | |
455 | op->val[0], op->val[1], val); | |
456 | else | |
457 | val = NULL_TREE; | |
458 | } | |
459 | ||
460 | res = val | |
461 | ? fold_binary_to_constant (c->code, boolean_type_node, val, c->val) | |
462 | : NULL; | |
463 | ||
464 | if (res && integer_zerop (res)) | |
465 | continue; | |
466 | if (res && integer_onep (res)) | |
467 | { | |
468 | clause |= 1 << (i + predicate::first_dynamic_condition); | |
469 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
470 | continue; | |
471 | } | |
4307a485 | 472 | } |
9d5af1db | 473 | if (c->operand_num < (int) avals->m_known_value_ranges.length () |
68718e8e | 474 | && !c->agg_contents |
68718e8e JH |
475 | && (!val || TREE_CODE (val) != INTEGER_CST)) |
476 | { | |
9d5af1db MJ |
477 | value_range vr = avals->m_known_value_ranges[c->operand_num]; |
478 | if (!vr.undefined_p () | |
479 | && !vr.varying_p () | |
480 | && (TYPE_SIZE (c->type) == TYPE_SIZE (vr.type ()))) | |
68718e8e | 481 | { |
9d5af1db MJ |
482 | if (!useless_type_conversion_p (c->type, vr.type ())) |
483 | { | |
484 | value_range res; | |
485 | range_fold_unary_expr (&res, NOP_EXPR, | |
68718e8e | 486 | c->type, &vr, vr.type ()); |
9d5af1db MJ |
487 | vr = res; |
488 | } | |
489 | tree type = c->type; | |
4307a485 | 490 | |
9d5af1db MJ |
491 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) |
492 | { | |
493 | if (vr.varying_p () || vr.undefined_p ()) | |
494 | break; | |
27d020cf | 495 | |
9d5af1db MJ |
496 | value_range res; |
497 | if (!op->val[0]) | |
498 | range_fold_unary_expr (&res, op->code, op->type, &vr, type); | |
499 | else if (!op->val[1]) | |
500 | { | |
501 | value_range op0 (op->val[0], op->val[0]); | |
502 | range_fold_binary_expr (&res, op->code, op->type, | |
503 | op->index ? &op0 : &vr, | |
504 | op->index ? &vr : &op0); | |
505 | } | |
506 | else | |
507 | gcc_unreachable (); | |
508 | type = op->type; | |
509 | vr = res; | |
510 | } | |
511 | if (!vr.varying_p () && !vr.undefined_p ()) | |
68718e8e | 512 | { |
9d5af1db MJ |
513 | value_range res; |
514 | value_range val_vr (c->val, c->val); | |
515 | range_fold_binary_expr (&res, c->code, boolean_type_node, | |
516 | &vr, | |
517 | &val_vr); | |
518 | if (res.zero_p ()) | |
519 | continue; | |
68718e8e | 520 | } |
68718e8e JH |
521 | } |
522 | } | |
27d020cf JH |
523 | |
524 | clause |= 1 << (i + predicate::first_dynamic_condition); | |
525 | nonspec_clause |= 1 << (i + predicate::first_dynamic_condition); | |
526 | } | |
527 | *ret_clause = clause; | |
528 | if (ret_nonspec_clause) | |
529 | *ret_nonspec_clause = nonspec_clause; | |
530 | } | |
531 | ||
2523d721 JH |
532 | /* Return true if VRP will be exectued on the function. |
533 | We do not want to anticipate optimizations that will not happen. | |
534 | ||
535 | FIXME: This can be confused with -fdisable and debug counters and thus | |
536 | it should not be used for correctness (only to make heuristics work). | |
537 | This means that inliner should do its own optimizations of expressions | |
538 | that it predicts to be constant so wrong code can not be triggered by | |
539 | builtin_constant_p. */ | |
540 | ||
541 | static bool | |
542 | vrp_will_run_p (struct cgraph_node *node) | |
543 | { | |
544 | return (opt_for_fn (node->decl, optimize) | |
545 | && !opt_for_fn (node->decl, optimize_debug) | |
546 | && opt_for_fn (node->decl, flag_tree_vrp)); | |
547 | } | |
548 | ||
549 | /* Similarly about FRE. */ | |
550 | ||
551 | static bool | |
552 | fre_will_run_p (struct cgraph_node *node) | |
553 | { | |
554 | return (opt_for_fn (node->decl, optimize) | |
555 | && !opt_for_fn (node->decl, optimize_debug) | |
556 | && opt_for_fn (node->decl, flag_tree_fre)); | |
557 | } | |
27d020cf | 558 | |
b0d55476 JH |
559 | /* Work out what conditions might be true at invocation of E. |
560 | Compute costs for inlined edge if INLINE_P is true. | |
561 | ||
956d615d | 562 | Return in CLAUSE_PTR the evaluated conditions and in NONSPEC_CLAUSE_PTR |
b0d55476 JH |
563 | (if non-NULL) conditions evaluated for nonspecialized clone called |
564 | in a given context. | |
565 | ||
9d5af1db MJ |
566 | Vectors in AVALS will be populated with useful known information about |
567 | argument values - information not known to have any uses will be omitted - | |
568 | except for m_known_contexts which will only be calculated if | |
569 | COMPUTE_CONTEXTS is true. */ | |
27d020cf JH |
570 | |
571 | void | |
572 | evaluate_properties_for_edge (struct cgraph_edge *e, bool inline_p, | |
573 | clause_t *clause_ptr, | |
574 | clause_t *nonspec_clause_ptr, | |
9d5af1db MJ |
575 | ipa_auto_call_arg_values *avals, |
576 | bool compute_contexts) | |
27d020cf JH |
577 | { |
578 | struct cgraph_node *callee = e->callee->ultimate_alias_target (); | |
99b1c316 | 579 | class ipa_fn_summary *info = ipa_fn_summaries->get (callee); |
a33c028e | 580 | class ipa_edge_args *args; |
27d020cf JH |
581 | |
582 | if (clause_ptr) | |
583 | *clause_ptr = inline_p ? 0 : 1 << predicate::not_inlined_condition; | |
27d020cf JH |
584 | |
585 | if (ipa_node_params_sum | |
586 | && !e->call_stmt_cannot_inline_p | |
9d5af1db | 587 | && (info->conds || compute_contexts) |
a33c028e | 588 | && (args = IPA_EDGE_REF (e)) != NULL) |
27d020cf | 589 | { |
eb270950 | 590 | struct cgraph_node *caller; |
b0d55476 | 591 | class ipa_node_params *caller_parms_info, *callee_pi = NULL; |
99b1c316 | 592 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
593 | int i, count = ipa_get_cs_argument_count (args); |
594 | ||
b0d55476 JH |
595 | if (count) |
596 | { | |
597 | if (e->caller->inlined_to) | |
598 | caller = e->caller->inlined_to; | |
599 | else | |
600 | caller = e->caller; | |
601 | caller_parms_info = IPA_NODE_REF (caller); | |
602 | callee_pi = IPA_NODE_REF (callee); | |
603 | ||
604 | /* Watch for thunks. */ | |
605 | if (callee_pi) | |
606 | /* Watch for variadic functions. */ | |
607 | count = MIN (count, ipa_get_param_count (callee_pi)); | |
608 | } | |
27d020cf | 609 | |
6cf67b62 JH |
610 | if (callee_pi) |
611 | for (i = 0; i < count; i++) | |
612 | { | |
613 | struct ipa_jump_func *jf = ipa_get_ith_jump_func (args, i); | |
6cf67b62 | 614 | |
b0d55476 JH |
615 | if (ipa_is_param_used_by_indirect_call (callee_pi, i) |
616 | || ipa_is_param_used_by_ipa_predicates (callee_pi, i)) | |
6cf67b62 | 617 | { |
b0d55476 JH |
618 | /* Determine if we know constant value of the parameter. */ |
619 | tree cst = ipa_value_from_jfunc (caller_parms_info, jf, | |
620 | ipa_get_type (callee_pi, i)); | |
621 | ||
622 | if (!cst && e->call_stmt | |
623 | && i < (int)gimple_call_num_args (e->call_stmt)) | |
624 | { | |
625 | cst = gimple_call_arg (e->call_stmt, i); | |
626 | if (!is_gimple_min_invariant (cst)) | |
627 | cst = NULL; | |
628 | } | |
629 | if (cst) | |
630 | { | |
631 | gcc_checking_assert (TREE_CODE (cst) != TREE_BINFO); | |
9d5af1db MJ |
632 | if (!avals->m_known_vals.length ()) |
633 | avals->m_known_vals.safe_grow_cleared (count, true); | |
634 | avals->m_known_vals[i] = cst; | |
b0d55476 JH |
635 | } |
636 | else if (inline_p && !es->param[i].change_prob) | |
637 | { | |
9d5af1db MJ |
638 | if (!avals->m_known_vals.length ()) |
639 | avals->m_known_vals.safe_grow_cleared (count, true); | |
640 | avals->m_known_vals[i] = error_mark_node; | |
b0d55476 JH |
641 | } |
642 | ||
643 | /* If we failed to get simple constant, try value range. */ | |
644 | if ((!cst || TREE_CODE (cst) != INTEGER_CST) | |
2523d721 | 645 | && vrp_will_run_p (caller) |
b0d55476 JH |
646 | && ipa_is_param_used_by_ipa_predicates (callee_pi, i)) |
647 | { | |
9d5af1db | 648 | value_range vr |
b0d55476 JH |
649 | = ipa_value_range_from_jfunc (caller_parms_info, e, jf, |
650 | ipa_get_type (callee_pi, | |
651 | i)); | |
652 | if (!vr.undefined_p () && !vr.varying_p ()) | |
653 | { | |
9d5af1db | 654 | if (!avals->m_known_value_ranges.length ()) |
4ba9fb0a | 655 | { |
9d5af1db | 656 | avals->m_known_value_ranges.safe_grow (count, true); |
4ba9fb0a | 657 | for (int i = 0; i < count; ++i) |
9d5af1db MJ |
658 | new (&avals->m_known_value_ranges[i]) |
659 | value_range (); | |
4ba9fb0a | 660 | } |
9d5af1db | 661 | avals->m_known_value_ranges[i] = vr; |
b0d55476 JH |
662 | } |
663 | } | |
664 | ||
665 | /* Determine known aggregate values. */ | |
21e28527 | 666 | if (fre_will_run_p (caller)) |
b0d55476 | 667 | { |
2523d721 JH |
668 | ipa_agg_value_set agg |
669 | = ipa_agg_value_set_from_jfunc (caller_parms_info, | |
670 | caller, &jf->agg); | |
671 | if (agg.items.length ()) | |
672 | { | |
9d5af1db MJ |
673 | if (!avals->m_known_aggs.length ()) |
674 | avals->m_known_aggs.safe_grow_cleared (count, true); | |
675 | avals->m_known_aggs[i] = agg; | |
2523d721 | 676 | } |
b0d55476 | 677 | } |
6cf67b62 | 678 | } |
b0d55476 JH |
679 | |
680 | /* For calls used in polymorphic calls we further determine | |
681 | polymorphic call context. */ | |
9d5af1db | 682 | if (compute_contexts |
b0d55476 | 683 | && ipa_is_param_used_by_polymorphic_call (callee_pi, i)) |
6cf67b62 | 684 | { |
b0d55476 JH |
685 | ipa_polymorphic_call_context |
686 | ctx = ipa_context_from_jfunc (caller_parms_info, e, i, jf); | |
687 | if (!ctx.useless_p ()) | |
688 | { | |
9d5af1db MJ |
689 | if (!avals->m_known_contexts.length ()) |
690 | avals->m_known_contexts.safe_grow_cleared (count, true); | |
691 | avals->m_known_contexts[i] | |
b0d55476 JH |
692 | = ipa_context_from_jfunc (caller_parms_info, e, i, jf); |
693 | } | |
694 | } | |
6cf67b62 JH |
695 | } |
696 | else | |
b0d55476 | 697 | gcc_assert (!count || callee->thunk.thunk_p); |
27d020cf | 698 | } |
b0d55476 | 699 | else if (e->call_stmt && !e->call_stmt_cannot_inline_p && info->conds) |
27d020cf JH |
700 | { |
701 | int i, count = (int)gimple_call_num_args (e->call_stmt); | |
702 | ||
27d020cf JH |
703 | for (i = 0; i < count; i++) |
704 | { | |
705 | tree cst = gimple_call_arg (e->call_stmt, i); | |
706 | if (!is_gimple_min_invariant (cst)) | |
707 | cst = NULL; | |
708 | if (cst) | |
b0d55476 | 709 | { |
9d5af1db MJ |
710 | if (!avals->m_known_vals.length ()) |
711 | avals->m_known_vals.safe_grow_cleared (count, true); | |
712 | avals->m_known_vals[i] = cst; | |
b0d55476 | 713 | } |
27d020cf JH |
714 | } |
715 | } | |
716 | ||
9d5af1db | 717 | evaluate_conditions_for_known_args (callee, inline_p, avals, clause_ptr, |
27d020cf | 718 | nonspec_clause_ptr); |
27d020cf JH |
719 | } |
720 | ||
721 | ||
0bceb671 | 722 | /* Allocate the function summary. */ |
27d020cf JH |
723 | |
724 | static void | |
0bceb671 | 725 | ipa_fn_summary_alloc (void) |
27d020cf | 726 | { |
0bceb671 | 727 | gcc_checking_assert (!ipa_fn_summaries); |
44fca832 | 728 | ipa_size_summaries = new ipa_size_summary_t (symtab); |
7237f93e | 729 | ipa_fn_summaries = ipa_fn_summary_t::create_ggc (symtab); |
db30281f | 730 | ipa_call_summaries = new ipa_call_summary_t (symtab); |
27d020cf JH |
731 | } |
732 | ||
56f62793 | 733 | ipa_call_summary::~ipa_call_summary () |
27d020cf | 734 | { |
27d020cf JH |
735 | if (predicate) |
736 | edge_predicate_pool.remove (predicate); | |
56f62793 | 737 | |
27d020cf JH |
738 | param.release (); |
739 | } | |
740 | ||
56f62793 | 741 | ipa_fn_summary::~ipa_fn_summary () |
27d020cf | 742 | { |
67ce9099 MJ |
743 | unsigned len = vec_safe_length (loop_iterations); |
744 | for (unsigned i = 0; i < len; i++) | |
745 | edge_predicate_pool.remove ((*loop_iterations)[i].predicate); | |
746 | len = vec_safe_length (loop_strides); | |
747 | for (unsigned i = 0; i < len; i++) | |
748 | edge_predicate_pool.remove ((*loop_strides)[i].predicate); | |
27d020cf JH |
749 | vec_free (conds); |
750 | vec_free (size_time_table); | |
070e3489 | 751 | vec_free (call_size_time_table); |
67ce9099 MJ |
752 | vec_free (loop_iterations); |
753 | vec_free (loop_strides); | |
27d020cf JH |
754 | } |
755 | ||
27d020cf | 756 | void |
56f62793 | 757 | ipa_fn_summary_t::remove_callees (cgraph_node *node) |
27d020cf | 758 | { |
56f62793 ML |
759 | cgraph_edge *e; |
760 | for (e = node->callees; e; e = e->next_callee) | |
761 | ipa_call_summaries->remove (e); | |
762 | for (e = node->indirect_calls; e; e = e->next_callee) | |
763 | ipa_call_summaries->remove (e); | |
27d020cf JH |
764 | } |
765 | ||
67ce9099 MJ |
766 | /* Duplicate predicates in loop hint vector, allocating memory for them and |
767 | remove and deallocate any uninteresting (true or false) ones. Return the | |
768 | result. */ | |
27d020cf | 769 | |
67ce9099 MJ |
770 | static vec<ipa_freqcounting_predicate, va_gc> * |
771 | remap_freqcounting_preds_after_dup (vec<ipa_freqcounting_predicate, va_gc> *v, | |
772 | clause_t possible_truths) | |
27d020cf | 773 | { |
67ce9099 MJ |
774 | if (vec_safe_length (v) == 0) |
775 | return NULL; | |
27d020cf | 776 | |
67ce9099 MJ |
777 | vec<ipa_freqcounting_predicate, va_gc> *res = v->copy (); |
778 | int len = res->length(); | |
779 | for (int i = len - 1; i >= 0; i--) | |
780 | { | |
781 | predicate new_predicate | |
782 | = (*res)[i].predicate->remap_after_duplication (possible_truths); | |
783 | /* We do not want to free previous predicate; it is used by node | |
784 | origin. */ | |
785 | (*res)[i].predicate = NULL; | |
786 | set_hint_predicate (&(*res)[i].predicate, new_predicate); | |
787 | ||
788 | if (!(*res)[i].predicate) | |
789 | res->unordered_remove (i); | |
790 | } | |
27d020cf | 791 | |
67ce9099 | 792 | return res; |
27d020cf JH |
793 | } |
794 | ||
795 | ||
796 | /* Hook that is called by cgraph.c when a node is duplicated. */ | |
797 | void | |
0bceb671 | 798 | ipa_fn_summary_t::duplicate (cgraph_node *src, |
27d020cf | 799 | cgraph_node *dst, |
0bceb671 JH |
800 | ipa_fn_summary *, |
801 | ipa_fn_summary *info) | |
27d020cf | 802 | { |
56f62793 | 803 | new (info) ipa_fn_summary (*ipa_fn_summaries->get (src)); |
27d020cf JH |
804 | /* TODO: as an optimization, we may avoid copying conditions |
805 | that are known to be false or true. */ | |
806 | info->conds = vec_safe_copy (info->conds); | |
807 | ||
808 | /* When there are any replacements in the function body, see if we can figure | |
809 | out that something was optimized out. */ | |
810 | if (ipa_node_params_sum && dst->clone.tree_map) | |
811 | { | |
812 | vec<size_time_entry, va_gc> *entry = info->size_time_table; | |
813 | /* Use SRC parm info since it may not be copied yet. */ | |
99b1c316 | 814 | class ipa_node_params *parms_info = IPA_NODE_REF (src); |
9d5af1db | 815 | ipa_auto_call_arg_values avals; |
27d020cf JH |
816 | int count = ipa_get_param_count (parms_info); |
817 | int i, j; | |
818 | clause_t possible_truths; | |
819 | predicate true_pred = true; | |
820 | size_time_entry *e; | |
821 | int optimized_out_size = 0; | |
822 | bool inlined_to_p = false; | |
823 | struct cgraph_edge *edge, *next; | |
824 | ||
825 | info->size_time_table = 0; | |
9d5af1db | 826 | avals.m_known_vals.safe_grow_cleared (count, true); |
27d020cf JH |
827 | for (i = 0; i < count; i++) |
828 | { | |
829 | struct ipa_replace_map *r; | |
830 | ||
831 | for (j = 0; vec_safe_iterate (dst->clone.tree_map, j, &r); j++) | |
832 | { | |
ff6686d2 | 833 | if (r->parm_num == i) |
27d020cf | 834 | { |
9d5af1db | 835 | avals.m_known_vals[i] = r->new_tree; |
27d020cf JH |
836 | break; |
837 | } | |
838 | } | |
839 | } | |
840 | evaluate_conditions_for_known_args (dst, false, | |
9d5af1db | 841 | &avals, |
27d020cf JH |
842 | &possible_truths, |
843 | /* We are going to specialize, | |
844 | so ignore nonspec truths. */ | |
845 | NULL); | |
27d020cf JH |
846 | |
847 | info->account_size_time (0, 0, true_pred, true_pred); | |
848 | ||
849 | /* Remap size_time vectors. | |
956d615d | 850 | Simplify the predicate by pruning out alternatives that are known |
27d020cf JH |
851 | to be false. |
852 | TODO: as on optimization, we can also eliminate conditions known | |
853 | to be true. */ | |
854 | for (i = 0; vec_safe_iterate (entry, i, &e); i++) | |
855 | { | |
856 | predicate new_exec_pred; | |
857 | predicate new_nonconst_pred; | |
858 | new_exec_pred = e->exec_predicate.remap_after_duplication | |
859 | (possible_truths); | |
860 | new_nonconst_pred = e->nonconst_predicate.remap_after_duplication | |
861 | (possible_truths); | |
862 | if (new_exec_pred == false || new_nonconst_pred == false) | |
863 | optimized_out_size += e->size; | |
864 | else | |
865 | info->account_size_time (e->size, e->time, new_exec_pred, | |
866 | new_nonconst_pred); | |
867 | } | |
868 | ||
869 | /* Remap edge predicates with the same simplification as above. | |
870 | Also copy constantness arrays. */ | |
871 | for (edge = dst->callees; edge; edge = next) | |
872 | { | |
873 | predicate new_predicate; | |
7237f93e | 874 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
875 | next = edge->next_callee; |
876 | ||
877 | if (!edge->inline_failed) | |
878 | inlined_to_p = true; | |
879 | if (!es->predicate) | |
880 | continue; | |
881 | new_predicate = es->predicate->remap_after_duplication | |
882 | (possible_truths); | |
883 | if (new_predicate == false && *es->predicate != false) | |
0bceb671 | 884 | optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale; |
27d020cf JH |
885 | edge_set_predicate (edge, &new_predicate); |
886 | } | |
887 | ||
956d615d | 888 | /* Remap indirect edge predicates with the same simplification as above. |
27d020cf JH |
889 | Also copy constantness arrays. */ |
890 | for (edge = dst->indirect_calls; edge; edge = next) | |
891 | { | |
892 | predicate new_predicate; | |
7237f93e | 893 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
894 | next = edge->next_callee; |
895 | ||
896 | gcc_checking_assert (edge->inline_failed); | |
897 | if (!es->predicate) | |
898 | continue; | |
899 | new_predicate = es->predicate->remap_after_duplication | |
900 | (possible_truths); | |
901 | if (new_predicate == false && *es->predicate != false) | |
0bceb671 | 902 | optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale; |
27d020cf JH |
903 | edge_set_predicate (edge, &new_predicate); |
904 | } | |
67ce9099 MJ |
905 | info->loop_iterations |
906 | = remap_freqcounting_preds_after_dup (info->loop_iterations, | |
27d020cf | 907 | possible_truths); |
67ce9099 MJ |
908 | info->loop_strides |
909 | = remap_freqcounting_preds_after_dup (info->loop_strides, | |
27d020cf | 910 | possible_truths); |
27d020cf JH |
911 | |
912 | /* If inliner or someone after inliner will ever start producing | |
913 | non-trivial clones, we will get trouble with lack of information | |
914 | about updating self sizes, because size vectors already contains | |
956d615d | 915 | sizes of the callees. */ |
27d020cf JH |
916 | gcc_assert (!inlined_to_p || !optimized_out_size); |
917 | } | |
918 | else | |
919 | { | |
920 | info->size_time_table = vec_safe_copy (info->size_time_table); | |
67ce9099 MJ |
921 | info->loop_iterations = vec_safe_copy (info->loop_iterations); |
922 | info->loop_strides = vec_safe_copy (info->loop_strides); | |
923 | ||
924 | ipa_freqcounting_predicate *f; | |
925 | for (int i = 0; vec_safe_iterate (info->loop_iterations, i, &f); i++) | |
27d020cf | 926 | { |
67ce9099 MJ |
927 | predicate p = *f->predicate; |
928 | f->predicate = NULL; | |
929 | set_hint_predicate (&f->predicate, p); | |
27d020cf | 930 | } |
67ce9099 | 931 | for (int i = 0; vec_safe_iterate (info->loop_strides, i, &f); i++) |
27d020cf | 932 | { |
67ce9099 MJ |
933 | predicate p = *f->predicate; |
934 | f->predicate = NULL; | |
935 | set_hint_predicate (&f->predicate, p); | |
27d020cf | 936 | } |
27d020cf | 937 | } |
a62bfab5 | 938 | if (!dst->inlined_to) |
0bceb671 | 939 | ipa_update_overall_fn_summary (dst); |
27d020cf JH |
940 | } |
941 | ||
942 | ||
943 | /* Hook that is called by cgraph.c when a node is duplicated. */ | |
944 | ||
945 | void | |
946 | ipa_call_summary_t::duplicate (struct cgraph_edge *src, | |
947 | struct cgraph_edge *dst, | |
99b1c316 MS |
948 | class ipa_call_summary *srcinfo, |
949 | class ipa_call_summary *info) | |
27d020cf | 950 | { |
56f62793 | 951 | new (info) ipa_call_summary (*srcinfo); |
27d020cf JH |
952 | info->predicate = NULL; |
953 | edge_set_predicate (dst, srcinfo->predicate); | |
954 | info->param = srcinfo->param.copy (); | |
955 | if (!dst->indirect_unknown_callee && src->indirect_unknown_callee) | |
956 | { | |
957 | info->call_stmt_size -= (eni_size_weights.indirect_call_cost | |
958 | - eni_size_weights.call_cost); | |
959 | info->call_stmt_time -= (eni_time_weights.indirect_call_cost | |
960 | - eni_time_weights.call_cost); | |
961 | } | |
962 | } | |
963 | ||
27d020cf JH |
964 | /* Dump edge summaries associated to NODE and recursively to all clones. |
965 | Indent by INDENT. */ | |
966 | ||
967 | static void | |
968 | dump_ipa_call_summary (FILE *f, int indent, struct cgraph_node *node, | |
99b1c316 | 969 | class ipa_fn_summary *info) |
27d020cf JH |
970 | { |
971 | struct cgraph_edge *edge; | |
972 | for (edge = node->callees; edge; edge = edge->next_callee) | |
973 | { | |
99b1c316 | 974 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
975 | struct cgraph_node *callee = edge->callee->ultimate_alias_target (); |
976 | int i; | |
977 | ||
978 | fprintf (f, | |
d597b944 ML |
979 | "%*s%s %s\n%*s freq:%4.2f", |
980 | indent, "", callee->dump_name (), | |
27d020cf JH |
981 | !edge->inline_failed |
982 | ? "inlined" : cgraph_inline_failed_string (edge-> inline_failed), | |
7237f93e JH |
983 | indent, "", edge->sreal_frequency ().to_double ()); |
984 | ||
b74d8dc4 JH |
985 | if (cross_module_call_p (edge)) |
986 | fprintf (f, " cross module"); | |
987 | ||
7237f93e JH |
988 | if (es) |
989 | fprintf (f, " loop depth:%2i size:%2i time: %2i", | |
990 | es->loop_depth, es->call_stmt_size, es->call_stmt_time); | |
56f62793 ML |
991 | |
992 | ipa_fn_summary *s = ipa_fn_summaries->get (callee); | |
f658ad30 | 993 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
56f62793 | 994 | if (s != NULL) |
f658ad30 JH |
995 | fprintf (f, " callee size:%2i stack:%2i", |
996 | (int) (ss->size / ipa_fn_summary::size_scale), | |
56f62793 | 997 | (int) s->estimated_stack_size); |
27d020cf | 998 | |
7237f93e | 999 | if (es && es->predicate) |
27d020cf JH |
1000 | { |
1001 | fprintf (f, " predicate: "); | |
1002 | es->predicate->dump (f, info->conds); | |
1003 | } | |
1004 | else | |
1005 | fprintf (f, "\n"); | |
7237f93e | 1006 | if (es && es->param.exists ()) |
27d020cf JH |
1007 | for (i = 0; i < (int) es->param.length (); i++) |
1008 | { | |
1009 | int prob = es->param[i].change_prob; | |
1010 | ||
1011 | if (!prob) | |
1012 | fprintf (f, "%*s op%i is compile time invariant\n", | |
1013 | indent + 2, "", i); | |
1014 | else if (prob != REG_BR_PROB_BASE) | |
1015 | fprintf (f, "%*s op%i change %f%% of time\n", indent + 2, "", i, | |
1016 | prob * 100.0 / REG_BR_PROB_BASE); | |
b89e4559 JH |
1017 | if (es->param[i].points_to_local_or_readonly_memory) |
1018 | fprintf (f, "%*s op%i points to local or readonly memory\n", | |
1019 | indent + 2, "", i); | |
27d020cf JH |
1020 | } |
1021 | if (!edge->inline_failed) | |
1022 | { | |
f658ad30 JH |
1023 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
1024 | fprintf (f, "%*sStack frame offset %i, callee self size %i\n", | |
27d020cf | 1025 | indent + 2, "", |
f658ad30 JH |
1026 | (int) ipa_get_stack_frame_offset (callee), |
1027 | (int) ss->estimated_self_stack_size); | |
27d020cf JH |
1028 | dump_ipa_call_summary (f, indent + 2, callee, info); |
1029 | } | |
1030 | } | |
1031 | for (edge = node->indirect_calls; edge; edge = edge->next_callee) | |
1032 | { | |
99b1c316 | 1033 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
41f0e819 | 1034 | fprintf (f, "%*sindirect call loop depth:%2i freq:%4.2f size:%2i" |
27d020cf JH |
1035 | " time: %2i", |
1036 | indent, "", | |
1037 | es->loop_depth, | |
41f0e819 JH |
1038 | edge->sreal_frequency ().to_double (), es->call_stmt_size, |
1039 | es->call_stmt_time); | |
27d020cf JH |
1040 | if (es->predicate) |
1041 | { | |
1042 | fprintf (f, "predicate: "); | |
1043 | es->predicate->dump (f, info->conds); | |
1044 | } | |
1045 | else | |
1046 | fprintf (f, "\n"); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | ||
1051 | void | |
0bceb671 | 1052 | ipa_dump_fn_summary (FILE *f, struct cgraph_node *node) |
27d020cf JH |
1053 | { |
1054 | if (node->definition) | |
1055 | { | |
99b1c316 | 1056 | class ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 1057 | class ipa_size_summary *ss = ipa_size_summaries->get (node); |
56f62793 | 1058 | if (s != NULL) |
27d020cf | 1059 | { |
56f62793 ML |
1060 | size_time_entry *e; |
1061 | int i; | |
1062 | fprintf (f, "IPA function summary for %s", node->dump_name ()); | |
1063 | if (DECL_DISREGARD_INLINE_LIMITS (node->decl)) | |
1064 | fprintf (f, " always_inline"); | |
1065 | if (s->inlinable) | |
1066 | fprintf (f, " inlinable"); | |
1067 | if (s->fp_expressions) | |
1068 | fprintf (f, " fp_expression"); | |
1069 | fprintf (f, "\n global time: %f\n", s->time.to_double ()); | |
f658ad30 JH |
1070 | fprintf (f, " self size: %i\n", ss->self_size); |
1071 | fprintf (f, " global size: %i\n", ss->size); | |
56f62793 ML |
1072 | fprintf (f, " min size: %i\n", s->min_size); |
1073 | fprintf (f, " self stack: %i\n", | |
f658ad30 | 1074 | (int) ss->estimated_self_stack_size); |
56f62793 ML |
1075 | fprintf (f, " global stack: %i\n", (int) s->estimated_stack_size); |
1076 | if (s->growth) | |
1077 | fprintf (f, " estimated growth:%i\n", (int) s->growth); | |
1078 | if (s->scc_no) | |
1079 | fprintf (f, " In SCC: %i\n", (int) s->scc_no); | |
1080 | for (i = 0; vec_safe_iterate (s->size_time_table, i, &e); i++) | |
1081 | { | |
1082 | fprintf (f, " size:%f, time:%f", | |
1083 | (double) e->size / ipa_fn_summary::size_scale, | |
1084 | e->time.to_double ()); | |
1085 | if (e->exec_predicate != true) | |
1086 | { | |
1087 | fprintf (f, ", executed if:"); | |
1088 | e->exec_predicate.dump (f, s->conds, 0); | |
1089 | } | |
1090 | if (e->exec_predicate != e->nonconst_predicate) | |
1091 | { | |
1092 | fprintf (f, ", nonconst if:"); | |
1093 | e->nonconst_predicate.dump (f, s->conds, 0); | |
1094 | } | |
1095 | fprintf (f, "\n"); | |
1096 | } | |
67ce9099 MJ |
1097 | ipa_freqcounting_predicate *fcp; |
1098 | bool first_fcp = true; | |
1099 | for (int i = 0; vec_safe_iterate (s->loop_iterations, i, &fcp); i++) | |
27d020cf | 1100 | { |
67ce9099 MJ |
1101 | if (first_fcp) |
1102 | { | |
1103 | fprintf (f, " loop iterations:"); | |
1104 | first_fcp = false; | |
1105 | } | |
1106 | fprintf (f, " %3.2f for ", fcp->freq.to_double ()); | |
1107 | fcp->predicate->dump (f, s->conds); | |
27d020cf | 1108 | } |
67ce9099 MJ |
1109 | first_fcp = true; |
1110 | for (int i = 0; vec_safe_iterate (s->loop_strides, i, &fcp); i++) | |
27d020cf | 1111 | { |
67ce9099 MJ |
1112 | if (first_fcp) |
1113 | { | |
1114 | fprintf (f, " loop strides:"); | |
1115 | first_fcp = false; | |
1116 | } | |
1117 | fprintf (f, " %3.2f for :", fcp->freq.to_double ()); | |
1118 | fcp->predicate->dump (f, s->conds); | |
27d020cf | 1119 | } |
56f62793 ML |
1120 | fprintf (f, " calls:\n"); |
1121 | dump_ipa_call_summary (f, 4, node, s); | |
27d020cf JH |
1122 | fprintf (f, "\n"); |
1123 | } | |
56f62793 ML |
1124 | else |
1125 | fprintf (f, "IPA summary for %s is missing.\n", node->dump_name ()); | |
27d020cf JH |
1126 | } |
1127 | } | |
1128 | ||
1129 | DEBUG_FUNCTION void | |
0bceb671 | 1130 | ipa_debug_fn_summary (struct cgraph_node *node) |
27d020cf | 1131 | { |
0bceb671 | 1132 | ipa_dump_fn_summary (stderr, node); |
27d020cf JH |
1133 | } |
1134 | ||
1135 | void | |
0bceb671 | 1136 | ipa_dump_fn_summaries (FILE *f) |
27d020cf JH |
1137 | { |
1138 | struct cgraph_node *node; | |
1139 | ||
1140 | FOR_EACH_DEFINED_FUNCTION (node) | |
a62bfab5 | 1141 | if (!node->inlined_to) |
0bceb671 | 1142 | ipa_dump_fn_summary (f, node); |
27d020cf JH |
1143 | } |
1144 | ||
1145 | /* Callback of walk_aliased_vdefs. Flags that it has been invoked to the | |
1146 | boolean variable pointed to by DATA. */ | |
1147 | ||
1148 | static bool | |
1149 | mark_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef ATTRIBUTE_UNUSED, | |
1150 | void *data) | |
1151 | { | |
1152 | bool *b = (bool *) data; | |
1153 | *b = true; | |
1154 | return true; | |
1155 | } | |
1156 | ||
1157 | /* If OP refers to value of function parameter, return the corresponding | |
1158 | parameter. If non-NULL, the size of the memory load (or the SSA_NAME of the | |
1159 | PARM_DECL) will be stored to *SIZE_P in that case too. */ | |
1160 | ||
1161 | static tree | |
c628d1c3 | 1162 | unmodified_parm_1 (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1163 | poly_int64 *size_p) |
27d020cf JH |
1164 | { |
1165 | /* SSA_NAME referring to parm default def? */ | |
1166 | if (TREE_CODE (op) == SSA_NAME | |
1167 | && SSA_NAME_IS_DEFAULT_DEF (op) | |
1168 | && TREE_CODE (SSA_NAME_VAR (op)) == PARM_DECL) | |
1169 | { | |
1170 | if (size_p) | |
86003645 | 1171 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1172 | return SSA_NAME_VAR (op); |
1173 | } | |
1174 | /* Non-SSA parm reference? */ | |
1175 | if (TREE_CODE (op) == PARM_DECL) | |
1176 | { | |
1177 | bool modified = false; | |
1178 | ||
1179 | ao_ref refd; | |
1180 | ao_ref_init (&refd, op); | |
c628d1c3 MJ |
1181 | int walked = walk_aliased_vdefs (&refd, gimple_vuse (stmt), |
1182 | mark_modified, &modified, NULL, NULL, | |
1183 | fbi->aa_walk_budget + 1); | |
1184 | if (walked < 0) | |
1185 | { | |
1186 | fbi->aa_walk_budget = 0; | |
1187 | return NULL_TREE; | |
1188 | } | |
27d020cf JH |
1189 | if (!modified) |
1190 | { | |
1191 | if (size_p) | |
86003645 | 1192 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1193 | return op; |
1194 | } | |
1195 | } | |
1196 | return NULL_TREE; | |
1197 | } | |
1198 | ||
1199 | /* If OP refers to value of function parameter, return the corresponding | |
1200 | parameter. Also traverse chains of SSA register assignments. If non-NULL, | |
1201 | the size of the memory load (or the SSA_NAME of the PARM_DECL) will be | |
1202 | stored to *SIZE_P in that case too. */ | |
1203 | ||
1204 | static tree | |
c628d1c3 | 1205 | unmodified_parm (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1206 | poly_int64 *size_p) |
27d020cf | 1207 | { |
c628d1c3 | 1208 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1209 | if (res) |
1210 | return res; | |
1211 | ||
1212 | if (TREE_CODE (op) == SSA_NAME | |
1213 | && !SSA_NAME_IS_DEFAULT_DEF (op) | |
1214 | && gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
c628d1c3 | 1215 | return unmodified_parm (fbi, SSA_NAME_DEF_STMT (op), |
27d020cf JH |
1216 | gimple_assign_rhs1 (SSA_NAME_DEF_STMT (op)), |
1217 | size_p); | |
1218 | return NULL_TREE; | |
1219 | } | |
1220 | ||
1221 | /* If OP refers to a value of a function parameter or value loaded from an | |
1222 | aggregate passed to a parameter (either by value or reference), return TRUE | |
1223 | and store the number of the parameter to *INDEX_P, the access size into | |
1224 | *SIZE_P, and information whether and how it has been loaded from an | |
1225 | aggregate into *AGGPOS. INFO describes the function parameters, STMT is the | |
1226 | statement in which OP is used or loaded. */ | |
1227 | ||
1228 | static bool | |
1229 | unmodified_parm_or_parm_agg_item (struct ipa_func_body_info *fbi, | |
1230 | gimple *stmt, tree op, int *index_p, | |
86003645 | 1231 | poly_int64 *size_p, |
27d020cf JH |
1232 | struct agg_position_info *aggpos) |
1233 | { | |
c628d1c3 | 1234 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1235 | |
1236 | gcc_checking_assert (aggpos); | |
1237 | if (res) | |
1238 | { | |
1239 | *index_p = ipa_get_param_decl_index (fbi->info, res); | |
1240 | if (*index_p < 0) | |
1241 | return false; | |
1242 | aggpos->agg_contents = false; | |
1243 | aggpos->by_ref = false; | |
1244 | return true; | |
1245 | } | |
1246 | ||
1247 | if (TREE_CODE (op) == SSA_NAME) | |
1248 | { | |
1249 | if (SSA_NAME_IS_DEFAULT_DEF (op) | |
1250 | || !gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
1251 | return false; | |
1252 | stmt = SSA_NAME_DEF_STMT (op); | |
1253 | op = gimple_assign_rhs1 (stmt); | |
1254 | if (!REFERENCE_CLASS_P (op)) | |
1255 | return unmodified_parm_or_parm_agg_item (fbi, stmt, op, index_p, size_p, | |
1256 | aggpos); | |
1257 | } | |
1258 | ||
1259 | aggpos->agg_contents = true; | |
1260 | return ipa_load_from_parm_agg (fbi, fbi->info->descriptors, | |
1261 | stmt, op, index_p, &aggpos->offset, | |
1262 | size_p, &aggpos->by_ref); | |
1263 | } | |
1264 | ||
1265 | /* See if statement might disappear after inlining. | |
1266 | 0 - means not eliminated | |
1267 | 1 - half of statements goes away | |
1268 | 2 - for sure it is eliminated. | |
1269 | We are not terribly sophisticated, basically looking for simple abstraction | |
1270 | penalty wrappers. */ | |
1271 | ||
1272 | static int | |
c628d1c3 | 1273 | eliminated_by_inlining_prob (ipa_func_body_info *fbi, gimple *stmt) |
27d020cf JH |
1274 | { |
1275 | enum gimple_code code = gimple_code (stmt); | |
1276 | enum tree_code rhs_code; | |
1277 | ||
1278 | if (!optimize) | |
1279 | return 0; | |
1280 | ||
1281 | switch (code) | |
1282 | { | |
1283 | case GIMPLE_RETURN: | |
1284 | return 2; | |
1285 | case GIMPLE_ASSIGN: | |
1286 | if (gimple_num_ops (stmt) != 2) | |
1287 | return 0; | |
1288 | ||
1289 | rhs_code = gimple_assign_rhs_code (stmt); | |
1290 | ||
1291 | /* Casts of parameters, loads from parameters passed by reference | |
1292 | and stores to return value or parameters are often free after | |
956d615d | 1293 | inlining due to SRA and further combining. |
27d020cf JH |
1294 | Assume that half of statements goes away. */ |
1295 | if (CONVERT_EXPR_CODE_P (rhs_code) | |
1296 | || rhs_code == VIEW_CONVERT_EXPR | |
1297 | || rhs_code == ADDR_EXPR | |
1298 | || gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS) | |
1299 | { | |
1300 | tree rhs = gimple_assign_rhs1 (stmt); | |
1301 | tree lhs = gimple_assign_lhs (stmt); | |
1302 | tree inner_rhs = get_base_address (rhs); | |
1303 | tree inner_lhs = get_base_address (lhs); | |
1304 | bool rhs_free = false; | |
1305 | bool lhs_free = false; | |
1306 | ||
1307 | if (!inner_rhs) | |
1308 | inner_rhs = rhs; | |
1309 | if (!inner_lhs) | |
1310 | inner_lhs = lhs; | |
1311 | ||
1312 | /* Reads of parameter are expected to be free. */ | |
c628d1c3 | 1313 | if (unmodified_parm (fbi, stmt, inner_rhs, NULL)) |
27d020cf JH |
1314 | rhs_free = true; |
1315 | /* Match expressions of form &this->field. Those will most likely | |
1316 | combine with something upstream after inlining. */ | |
1317 | else if (TREE_CODE (inner_rhs) == ADDR_EXPR) | |
1318 | { | |
1319 | tree op = get_base_address (TREE_OPERAND (inner_rhs, 0)); | |
1320 | if (TREE_CODE (op) == PARM_DECL) | |
1321 | rhs_free = true; | |
1322 | else if (TREE_CODE (op) == MEM_REF | |
c628d1c3 MJ |
1323 | && unmodified_parm (fbi, stmt, TREE_OPERAND (op, 0), |
1324 | NULL)) | |
27d020cf JH |
1325 | rhs_free = true; |
1326 | } | |
1327 | ||
1328 | /* When parameter is not SSA register because its address is taken | |
1329 | and it is just copied into one, the statement will be completely | |
1330 | free after inlining (we will copy propagate backward). */ | |
1331 | if (rhs_free && is_gimple_reg (lhs)) | |
1332 | return 2; | |
1333 | ||
1334 | /* Reads of parameters passed by reference | |
1335 | expected to be free (i.e. optimized out after inlining). */ | |
1336 | if (TREE_CODE (inner_rhs) == MEM_REF | |
c628d1c3 | 1337 | && unmodified_parm (fbi, stmt, TREE_OPERAND (inner_rhs, 0), NULL)) |
27d020cf JH |
1338 | rhs_free = true; |
1339 | ||
1340 | /* Copying parameter passed by reference into gimple register is | |
1341 | probably also going to copy propagate, but we can't be quite | |
1342 | sure. */ | |
1343 | if (rhs_free && is_gimple_reg (lhs)) | |
1344 | lhs_free = true; | |
1345 | ||
1346 | /* Writes to parameters, parameters passed by value and return value | |
956d615d | 1347 | (either directly or passed via invisible reference) are free. |
27d020cf JH |
1348 | |
1349 | TODO: We ought to handle testcase like | |
1350 | struct a {int a,b;}; | |
1351 | struct a | |
956d615d | 1352 | returnstruct (void) |
27d020cf JH |
1353 | { |
1354 | struct a a ={1,2}; | |
1355 | return a; | |
1356 | } | |
1357 | ||
1358 | This translate into: | |
1359 | ||
956d615d | 1360 | returnstruct () |
27d020cf JH |
1361 | { |
1362 | int a$b; | |
1363 | int a$a; | |
1364 | struct a a; | |
1365 | struct a D.2739; | |
1366 | ||
1367 | <bb 2>: | |
1368 | D.2739.a = 1; | |
1369 | D.2739.b = 2; | |
1370 | return D.2739; | |
1371 | ||
1372 | } | |
1373 | For that we either need to copy ipa-split logic detecting writes | |
1374 | to return value. */ | |
1375 | if (TREE_CODE (inner_lhs) == PARM_DECL | |
1376 | || TREE_CODE (inner_lhs) == RESULT_DECL | |
1377 | || (TREE_CODE (inner_lhs) == MEM_REF | |
c628d1c3 MJ |
1378 | && (unmodified_parm (fbi, stmt, TREE_OPERAND (inner_lhs, 0), |
1379 | NULL) | |
27d020cf JH |
1380 | || (TREE_CODE (TREE_OPERAND (inner_lhs, 0)) == SSA_NAME |
1381 | && SSA_NAME_VAR (TREE_OPERAND (inner_lhs, 0)) | |
1382 | && TREE_CODE (SSA_NAME_VAR (TREE_OPERAND | |
1383 | (inner_lhs, | |
1384 | 0))) == RESULT_DECL)))) | |
1385 | lhs_free = true; | |
1386 | if (lhs_free | |
1387 | && (is_gimple_reg (rhs) || is_gimple_min_invariant (rhs))) | |
1388 | rhs_free = true; | |
1389 | if (lhs_free && rhs_free) | |
1390 | return 1; | |
1391 | } | |
1392 | return 0; | |
1393 | default: | |
1394 | return 0; | |
1395 | } | |
1396 | } | |
1397 | ||
4307a485 FX |
1398 | /* Analyze EXPR if it represents a series of simple operations performed on |
1399 | a function parameter and return true if so. FBI, STMT, EXPR, INDEX_P and | |
1400 | AGGPOS have the same meaning like in unmodified_parm_or_parm_agg_item. | |
1401 | Type of the parameter or load from an aggregate via the parameter is | |
1402 | stored in *TYPE_P. Operations on the parameter are recorded to | |
1403 | PARAM_OPS_P if it is not NULL. */ | |
1404 | ||
1405 | static bool | |
1406 | decompose_param_expr (struct ipa_func_body_info *fbi, | |
1407 | gimple *stmt, tree expr, | |
1408 | int *index_p, tree *type_p, | |
1409 | struct agg_position_info *aggpos, | |
1410 | expr_eval_ops *param_ops_p = NULL) | |
1411 | { | |
fdfd7f53 | 1412 | int op_limit = opt_for_fn (fbi->node->decl, param_ipa_max_param_expr_ops); |
4307a485 FX |
1413 | int op_count = 0; |
1414 | ||
1415 | if (param_ops_p) | |
1416 | *param_ops_p = NULL; | |
1417 | ||
1418 | while (true) | |
1419 | { | |
1420 | expr_eval_op eval_op; | |
1421 | unsigned rhs_count; | |
1422 | unsigned cst_count = 0; | |
1423 | ||
1424 | if (unmodified_parm_or_parm_agg_item (fbi, stmt, expr, index_p, NULL, | |
1425 | aggpos)) | |
1426 | { | |
1427 | tree type = TREE_TYPE (expr); | |
1428 | ||
1429 | if (aggpos->agg_contents) | |
1430 | { | |
1431 | /* Stop if containing bit-field. */ | |
1432 | if (TREE_CODE (expr) == BIT_FIELD_REF | |
1433 | || contains_bitfld_component_ref_p (expr)) | |
1434 | break; | |
1435 | } | |
1436 | ||
1437 | *type_p = type; | |
1438 | return true; | |
1439 | } | |
1440 | ||
1441 | if (TREE_CODE (expr) != SSA_NAME || SSA_NAME_IS_DEFAULT_DEF (expr)) | |
1442 | break; | |
1443 | ||
1444 | if (!is_gimple_assign (stmt = SSA_NAME_DEF_STMT (expr))) | |
1445 | break; | |
1446 | ||
1447 | switch (gimple_assign_rhs_class (stmt)) | |
1448 | { | |
1449 | case GIMPLE_SINGLE_RHS: | |
1450 | expr = gimple_assign_rhs1 (stmt); | |
1451 | continue; | |
1452 | ||
1453 | case GIMPLE_UNARY_RHS: | |
1454 | rhs_count = 1; | |
1455 | break; | |
1456 | ||
1457 | case GIMPLE_BINARY_RHS: | |
1458 | rhs_count = 2; | |
1459 | break; | |
1460 | ||
1461 | case GIMPLE_TERNARY_RHS: | |
1462 | rhs_count = 3; | |
1463 | break; | |
1464 | ||
1465 | default: | |
1466 | goto fail; | |
1467 | } | |
1468 | ||
1469 | /* Stop if expression is too complex. */ | |
1470 | if (op_count++ == op_limit) | |
1471 | break; | |
1472 | ||
1473 | if (param_ops_p) | |
1474 | { | |
1475 | eval_op.code = gimple_assign_rhs_code (stmt); | |
1476 | eval_op.type = TREE_TYPE (gimple_assign_lhs (stmt)); | |
1477 | eval_op.val[0] = NULL_TREE; | |
1478 | eval_op.val[1] = NULL_TREE; | |
1479 | } | |
1480 | ||
1481 | expr = NULL_TREE; | |
1482 | for (unsigned i = 0; i < rhs_count; i++) | |
1483 | { | |
1484 | tree op = gimple_op (stmt, i + 1); | |
1485 | ||
1486 | gcc_assert (op && !TYPE_P (op)); | |
1487 | if (is_gimple_ip_invariant (op)) | |
1488 | { | |
1489 | if (++cst_count == rhs_count) | |
1490 | goto fail; | |
1491 | ||
1492 | eval_op.val[cst_count - 1] = op; | |
1493 | } | |
1494 | else if (!expr) | |
1495 | { | |
1496 | /* Found a non-constant operand, and record its index in rhs | |
1497 | operands. */ | |
1498 | eval_op.index = i; | |
1499 | expr = op; | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | /* Found more than one non-constant operands. */ | |
1504 | goto fail; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | if (param_ops_p) | |
1509 | vec_safe_insert (*param_ops_p, 0, eval_op); | |
1510 | } | |
1511 | ||
1512 | /* Failed to decompose, free resource and return. */ | |
1513 | fail: | |
1514 | if (param_ops_p) | |
1515 | vec_free (*param_ops_p); | |
1516 | ||
1517 | return false; | |
1518 | } | |
27d020cf JH |
1519 | |
1520 | /* If BB ends by a conditional we can turn into predicates, attach corresponding | |
1521 | predicates to the CFG edges. */ | |
1522 | ||
1523 | static void | |
1524 | set_cond_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1525 | class ipa_fn_summary *summary, |
40a777e8 | 1526 | class ipa_node_params *params_summary, |
27d020cf JH |
1527 | basic_block bb) |
1528 | { | |
1529 | gimple *last; | |
4307a485 | 1530 | tree op, op2; |
27d020cf | 1531 | int index; |
27d020cf JH |
1532 | struct agg_position_info aggpos; |
1533 | enum tree_code code, inverted_code; | |
1534 | edge e; | |
1535 | edge_iterator ei; | |
1536 | gimple *set_stmt; | |
4307a485 FX |
1537 | tree param_type; |
1538 | expr_eval_ops param_ops; | |
27d020cf JH |
1539 | |
1540 | last = last_stmt (bb); | |
1541 | if (!last || gimple_code (last) != GIMPLE_COND) | |
1542 | return; | |
1543 | if (!is_gimple_ip_invariant (gimple_cond_rhs (last))) | |
1544 | return; | |
1545 | op = gimple_cond_lhs (last); | |
4307a485 FX |
1546 | |
1547 | if (decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, | |
1548 | ¶m_ops)) | |
27d020cf JH |
1549 | { |
1550 | code = gimple_cond_code (last); | |
1551 | inverted_code = invert_tree_comparison (code, HONOR_NANS (op)); | |
1552 | ||
1553 | FOR_EACH_EDGE (e, ei, bb->succs) | |
1554 | { | |
1555 | enum tree_code this_code = (e->flags & EDGE_TRUE_VALUE | |
1556 | ? code : inverted_code); | |
1557 | /* invert_tree_comparison will return ERROR_MARK on FP | |
956d615d | 1558 | comparisons that are not EQ/NE instead of returning proper |
efe12656 FX |
1559 | unordered one. Be sure it is not confused with NON_CONSTANT. |
1560 | ||
1561 | And if the edge's target is the final block of diamond CFG graph | |
1562 | of this conditional statement, we do not need to compute | |
1563 | predicate for the edge because the final block's predicate must | |
1564 | be at least as that of the first block of the statement. */ | |
1565 | if (this_code != ERROR_MARK | |
1566 | && !dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
27d020cf JH |
1567 | { |
1568 | predicate p | |
40a777e8 JH |
1569 | = add_condition (summary, params_summary, index, |
1570 | param_type, &aggpos, | |
4307a485 | 1571 | this_code, gimple_cond_rhs (last), param_ops); |
27d020cf JH |
1572 | e->aux = edge_predicate_pool.allocate (); |
1573 | *(predicate *) e->aux = p; | |
1574 | } | |
1575 | } | |
4307a485 | 1576 | vec_free (param_ops); |
27d020cf JH |
1577 | } |
1578 | ||
1579 | if (TREE_CODE (op) != SSA_NAME) | |
1580 | return; | |
1581 | /* Special case | |
1582 | if (builtin_constant_p (op)) | |
1583 | constant_code | |
1584 | else | |
1585 | nonconstant_code. | |
1586 | Here we can predicate nonconstant_code. We can't | |
1587 | really handle constant_code since we have no predicate | |
1588 | for this and also the constant code is not known to be | |
956d615d | 1589 | optimized away when inliner doesn't see operand is constant. |
27d020cf JH |
1590 | Other optimizers might think otherwise. */ |
1591 | if (gimple_cond_code (last) != NE_EXPR | |
1592 | || !integer_zerop (gimple_cond_rhs (last))) | |
1593 | return; | |
1594 | set_stmt = SSA_NAME_DEF_STMT (op); | |
1595 | if (!gimple_call_builtin_p (set_stmt, BUILT_IN_CONSTANT_P) | |
1596 | || gimple_call_num_args (set_stmt) != 1) | |
1597 | return; | |
1598 | op2 = gimple_call_arg (set_stmt, 0); | |
4307a485 | 1599 | if (!decompose_param_expr (fbi, set_stmt, op2, &index, ¶m_type, &aggpos)) |
27d020cf JH |
1600 | return; |
1601 | FOR_EACH_EDGE (e, ei, bb->succs) if (e->flags & EDGE_FALSE_VALUE) | |
1602 | { | |
40a777e8 JH |
1603 | predicate p = add_condition (summary, params_summary, index, |
1604 | param_type, &aggpos, | |
27d020cf JH |
1605 | predicate::is_not_constant, NULL_TREE); |
1606 | e->aux = edge_predicate_pool.allocate (); | |
1607 | *(predicate *) e->aux = p; | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | ||
1612 | /* If BB ends by a switch we can turn into predicates, attach corresponding | |
1613 | predicates to the CFG edges. */ | |
1614 | ||
1615 | static void | |
1616 | set_switch_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1617 | class ipa_fn_summary *summary, |
40a777e8 | 1618 | class ipa_node_params *params_summary, |
27d020cf JH |
1619 | basic_block bb) |
1620 | { | |
1621 | gimple *lastg; | |
1622 | tree op; | |
1623 | int index; | |
27d020cf JH |
1624 | struct agg_position_info aggpos; |
1625 | edge e; | |
1626 | edge_iterator ei; | |
1627 | size_t n; | |
1628 | size_t case_idx; | |
4307a485 FX |
1629 | tree param_type; |
1630 | expr_eval_ops param_ops; | |
27d020cf JH |
1631 | |
1632 | lastg = last_stmt (bb); | |
1633 | if (!lastg || gimple_code (lastg) != GIMPLE_SWITCH) | |
1634 | return; | |
1635 | gswitch *last = as_a <gswitch *> (lastg); | |
1636 | op = gimple_switch_index (last); | |
4307a485 FX |
1637 | if (!decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, |
1638 | ¶m_ops)) | |
27d020cf JH |
1639 | return; |
1640 | ||
351e7c3b FX |
1641 | auto_vec<std::pair<tree, tree> > ranges; |
1642 | tree type = TREE_TYPE (op); | |
fdfd7f53 ML |
1643 | int bound_limit = opt_for_fn (fbi->node->decl, |
1644 | param_ipa_max_switch_predicate_bounds); | |
351e7c3b FX |
1645 | int bound_count = 0; |
1646 | wide_int vr_wmin, vr_wmax; | |
1647 | value_range_kind vr_type = get_range_info (op, &vr_wmin, &vr_wmax); | |
1648 | ||
27d020cf JH |
1649 | FOR_EACH_EDGE (e, ei, bb->succs) |
1650 | { | |
1651 | e->aux = edge_predicate_pool.allocate (); | |
1652 | *(predicate *) e->aux = false; | |
1653 | } | |
351e7c3b | 1654 | |
efe12656 FX |
1655 | e = gimple_switch_edge (cfun, last, 0); |
1656 | /* Set BOUND_COUNT to maximum count to bypass computing predicate for | |
1657 | default case if its target basic block is in convergence point of all | |
1658 | switch cases, which can be determined by checking whether it | |
1659 | post-dominates the switch statement. */ | |
1660 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1661 | bound_count = INT_MAX; | |
1662 | ||
27d020cf | 1663 | n = gimple_switch_num_labels (last); |
351e7c3b | 1664 | for (case_idx = 1; case_idx < n; ++case_idx) |
27d020cf JH |
1665 | { |
1666 | tree cl = gimple_switch_label (last, case_idx); | |
efe12656 FX |
1667 | tree min = CASE_LOW (cl); |
1668 | tree max = CASE_HIGH (cl); | |
27d020cf JH |
1669 | predicate p; |
1670 | ||
4307a485 FX |
1671 | e = gimple_switch_edge (cfun, last, case_idx); |
1672 | ||
efe12656 FX |
1673 | /* The case value might not have same type as switch expression, |
1674 | extend the value based on the expression type. */ | |
1675 | if (TREE_TYPE (min) != type) | |
1676 | min = wide_int_to_tree (type, wi::to_wide (min)); | |
27d020cf | 1677 | |
351e7c3b | 1678 | if (!max) |
efe12656 FX |
1679 | max = min; |
1680 | else if (TREE_TYPE (max) != type) | |
1681 | max = wide_int_to_tree (type, wi::to_wide (max)); | |
1682 | ||
1683 | /* The case's target basic block is in convergence point of all switch | |
1684 | cases, its predicate should be at least as that of the switch | |
1685 | statement. */ | |
1686 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1687 | p = true; | |
1688 | else if (min == max) | |
40a777e8 JH |
1689 | p = add_condition (summary, params_summary, index, param_type, |
1690 | &aggpos, EQ_EXPR, min, param_ops); | |
27d020cf JH |
1691 | else |
1692 | { | |
1693 | predicate p1, p2; | |
40a777e8 JH |
1694 | p1 = add_condition (summary, params_summary, index, param_type, |
1695 | &aggpos, GE_EXPR, min, param_ops); | |
1696 | p2 = add_condition (summary, params_summary,index, param_type, | |
1697 | &aggpos, LE_EXPR, max, param_ops); | |
27d020cf JH |
1698 | p = p1 & p2; |
1699 | } | |
99b1c316 MS |
1700 | *(class predicate *) e->aux |
1701 | = p.or_with (summary->conds, *(class predicate *) e->aux); | |
351e7c3b FX |
1702 | |
1703 | /* If there are too many disjoint case ranges, predicate for default | |
1704 | case might become too complicated. So add a limit here. */ | |
1705 | if (bound_count > bound_limit) | |
1706 | continue; | |
1707 | ||
1708 | bool new_range = true; | |
1709 | ||
1710 | if (!ranges.is_empty ()) | |
1711 | { | |
1712 | wide_int curr_wmin = wi::to_wide (min); | |
1713 | wide_int last_wmax = wi::to_wide (ranges.last ().second); | |
1714 | ||
1715 | /* Merge case ranges if they are continuous. */ | |
1716 | if (curr_wmin == last_wmax + 1) | |
1717 | new_range = false; | |
1718 | else if (vr_type == VR_ANTI_RANGE) | |
1719 | { | |
1720 | /* If two disjoint case ranges can be connected by anti-range | |
1721 | of switch index, combine them to one range. */ | |
1722 | if (wi::lt_p (vr_wmax, curr_wmin - 1, TYPE_SIGN (type))) | |
1723 | vr_type = VR_UNDEFINED; | |
1724 | else if (wi::le_p (vr_wmin, last_wmax + 1, TYPE_SIGN (type))) | |
1725 | new_range = false; | |
1726 | } | |
1727 | } | |
1728 | ||
351e7c3b FX |
1729 | /* Create/extend a case range. And we count endpoints of range set, |
1730 | this number nearly equals to number of conditions that we will create | |
1731 | for predicate of default case. */ | |
1732 | if (new_range) | |
1733 | { | |
1734 | bound_count += (min == max) ? 1 : 2; | |
1735 | ranges.safe_push (std::make_pair (min, max)); | |
1736 | } | |
1737 | else | |
1738 | { | |
1739 | bound_count += (ranges.last ().first == ranges.last ().second); | |
1740 | ranges.last ().second = max; | |
1741 | } | |
1742 | } | |
1743 | ||
1744 | e = gimple_switch_edge (cfun, last, 0); | |
1745 | if (bound_count > bound_limit) | |
1746 | { | |
1747 | *(class predicate *) e->aux = true; | |
4307a485 | 1748 | vec_free (param_ops); |
351e7c3b | 1749 | return; |
27d020cf | 1750 | } |
351e7c3b FX |
1751 | |
1752 | predicate p_seg = true; | |
1753 | predicate p_all = false; | |
1754 | ||
1755 | if (vr_type != VR_RANGE) | |
1756 | { | |
1757 | vr_wmin = wi::to_wide (TYPE_MIN_VALUE (type)); | |
1758 | vr_wmax = wi::to_wide (TYPE_MAX_VALUE (type)); | |
1759 | } | |
1760 | ||
1761 | /* Construct predicate to represent default range set that is negation of | |
1762 | all case ranges. Case range is classified as containing single/non-single | |
1763 | values. Suppose a piece of case ranges in the following. | |
1764 | ||
1765 | [D1...D2] [S1] ... [Sn] [D3...D4] | |
1766 | ||
1767 | To represent default case's range sets between two non-single value | |
1768 | case ranges (From D2 to D3), we construct predicate as: | |
1769 | ||
1770 | D2 < x < D3 && x != S1 && ... && x != Sn | |
1771 | */ | |
1772 | for (size_t i = 0; i < ranges.length (); i++) | |
1773 | { | |
1774 | tree min = ranges[i].first; | |
1775 | tree max = ranges[i].second; | |
1776 | ||
1777 | if (min == max) | |
40a777e8 JH |
1778 | p_seg &= add_condition (summary, params_summary, index, |
1779 | param_type, &aggpos, NE_EXPR, | |
4307a485 | 1780 | min, param_ops); |
351e7c3b FX |
1781 | else |
1782 | { | |
1783 | /* Do not create sub-predicate for range that is beyond low bound | |
1784 | of switch index. */ | |
1785 | if (wi::lt_p (vr_wmin, wi::to_wide (min), TYPE_SIGN (type))) | |
1786 | { | |
40a777e8 JH |
1787 | p_seg &= add_condition (summary, params_summary, index, |
1788 | param_type, &aggpos, | |
4307a485 | 1789 | LT_EXPR, min, param_ops); |
351e7c3b FX |
1790 | p_all = p_all.or_with (summary->conds, p_seg); |
1791 | } | |
1792 | ||
1793 | /* Do not create sub-predicate for range that is beyond up bound | |
1794 | of switch index. */ | |
1795 | if (wi::le_p (vr_wmax, wi::to_wide (max), TYPE_SIGN (type))) | |
1796 | { | |
1797 | p_seg = false; | |
1798 | break; | |
1799 | } | |
1800 | ||
40a777e8 JH |
1801 | p_seg = add_condition (summary, params_summary, index, |
1802 | param_type, &aggpos, GT_EXPR, | |
4307a485 | 1803 | max, param_ops); |
351e7c3b FX |
1804 | } |
1805 | } | |
1806 | ||
1807 | p_all = p_all.or_with (summary->conds, p_seg); | |
1808 | *(class predicate *) e->aux | |
1809 | = p_all.or_with (summary->conds, *(class predicate *) e->aux); | |
4307a485 FX |
1810 | |
1811 | vec_free (param_ops); | |
27d020cf JH |
1812 | } |
1813 | ||
1814 | ||
1815 | /* For each BB in NODE attach to its AUX pointer predicate under | |
1816 | which it is executable. */ | |
1817 | ||
1818 | static void | |
1819 | compute_bb_predicates (struct ipa_func_body_info *fbi, | |
1820 | struct cgraph_node *node, | |
40a777e8 JH |
1821 | class ipa_fn_summary *summary, |
1822 | class ipa_node_params *params_summary) | |
27d020cf JH |
1823 | { |
1824 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
1825 | bool done = false; | |
1826 | basic_block bb; | |
1827 | ||
1828 | FOR_EACH_BB_FN (bb, my_function) | |
1829 | { | |
40a777e8 JH |
1830 | set_cond_stmt_execution_predicate (fbi, summary, params_summary, bb); |
1831 | set_switch_stmt_execution_predicate (fbi, summary, params_summary, bb); | |
27d020cf JH |
1832 | } |
1833 | ||
1834 | /* Entry block is always executable. */ | |
1835 | ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux | |
1836 | = edge_predicate_pool.allocate (); | |
1837 | *(predicate *) ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux = true; | |
1838 | ||
1839 | /* A simple dataflow propagation of predicates forward in the CFG. | |
1840 | TODO: work in reverse postorder. */ | |
1841 | while (!done) | |
1842 | { | |
1843 | done = true; | |
1844 | FOR_EACH_BB_FN (bb, my_function) | |
1845 | { | |
1846 | predicate p = false; | |
1847 | edge e; | |
1848 | edge_iterator ei; | |
1849 | FOR_EACH_EDGE (e, ei, bb->preds) | |
1850 | { | |
1851 | if (e->src->aux) | |
1852 | { | |
1853 | predicate this_bb_predicate | |
1854 | = *(predicate *) e->src->aux; | |
1855 | if (e->aux) | |
99b1c316 | 1856 | this_bb_predicate &= (*(class predicate *) e->aux); |
27d020cf JH |
1857 | p = p.or_with (summary->conds, this_bb_predicate); |
1858 | if (p == true) | |
1859 | break; | |
1860 | } | |
1861 | } | |
efe12656 | 1862 | if (p != false) |
27d020cf | 1863 | { |
efe12656 FX |
1864 | basic_block pdom_bb; |
1865 | ||
27d020cf JH |
1866 | if (!bb->aux) |
1867 | { | |
1868 | done = false; | |
1869 | bb->aux = edge_predicate_pool.allocate (); | |
1870 | *((predicate *) bb->aux) = p; | |
1871 | } | |
1872 | else if (p != *(predicate *) bb->aux) | |
1873 | { | |
1874 | /* This OR operation is needed to ensure monotonous data flow | |
1875 | in the case we hit the limit on number of clauses and the | |
1876 | and/or operations above give approximate answers. */ | |
1877 | p = p.or_with (summary->conds, *(predicate *)bb->aux); | |
1878 | if (p != *(predicate *) bb->aux) | |
1879 | { | |
1880 | done = false; | |
1881 | *((predicate *) bb->aux) = p; | |
1882 | } | |
1883 | } | |
efe12656 FX |
1884 | |
1885 | /* For switch/if statement, we can OR-combine predicates of all | |
1886 | its cases/branches to get predicate for basic block in their | |
1887 | convergence point, but sometimes this will generate very | |
1888 | complicated predicate. Actually, we can get simplified | |
1889 | predicate in another way by using the fact that predicate | |
1890 | for a basic block must also hold true for its post dominators. | |
1891 | To be specific, basic block in convergence point of | |
1892 | conditional statement should include predicate of the | |
1893 | statement. */ | |
1894 | pdom_bb = get_immediate_dominator (CDI_POST_DOMINATORS, bb); | |
1895 | if (pdom_bb == EXIT_BLOCK_PTR_FOR_FN (my_function) || !pdom_bb) | |
1896 | ; | |
1897 | else if (!pdom_bb->aux) | |
1898 | { | |
1899 | done = false; | |
1900 | pdom_bb->aux = edge_predicate_pool.allocate (); | |
1901 | *((predicate *) pdom_bb->aux) = p; | |
1902 | } | |
1903 | else if (p != *(predicate *) pdom_bb->aux) | |
1904 | { | |
1905 | p = p.or_with (summary->conds, *(predicate *)pdom_bb->aux); | |
1906 | if (p != *(predicate *) pdom_bb->aux) | |
1907 | { | |
1908 | done = false; | |
1909 | *((predicate *) pdom_bb->aux) = p; | |
1910 | } | |
1911 | } | |
27d020cf JH |
1912 | } |
1913 | } | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | ||
1918 | /* Return predicate specifying when the STMT might have result that is not | |
1919 | a compile time constant. */ | |
1920 | ||
1921 | static predicate | |
c628d1c3 | 1922 | will_be_nonconstant_expr_predicate (ipa_func_body_info *fbi, |
99b1c316 | 1923 | class ipa_fn_summary *summary, |
40a777e8 | 1924 | class ipa_node_params *params_summary, |
27d020cf JH |
1925 | tree expr, |
1926 | vec<predicate> nonconstant_names) | |
1927 | { | |
1928 | tree parm; | |
1929 | int index; | |
27d020cf JH |
1930 | |
1931 | while (UNARY_CLASS_P (expr)) | |
1932 | expr = TREE_OPERAND (expr, 0); | |
1933 | ||
4307a485 | 1934 | parm = unmodified_parm (fbi, NULL, expr, NULL); |
c628d1c3 | 1935 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) |
40a777e8 | 1936 | return add_condition (summary, params_summary, index, TREE_TYPE (parm), NULL, |
4307a485 | 1937 | predicate::changed, NULL_TREE); |
27d020cf JH |
1938 | if (is_gimple_min_invariant (expr)) |
1939 | return false; | |
1940 | if (TREE_CODE (expr) == SSA_NAME) | |
1941 | return nonconstant_names[SSA_NAME_VERSION (expr)]; | |
1942 | if (BINARY_CLASS_P (expr) || COMPARISON_CLASS_P (expr)) | |
1943 | { | |
c628d1c3 MJ |
1944 | predicate p1 |
1945 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1946 | params_summary, |
c628d1c3 MJ |
1947 | TREE_OPERAND (expr, 0), |
1948 | nonconstant_names); | |
27d020cf JH |
1949 | if (p1 == true) |
1950 | return p1; | |
1951 | ||
c628d1c3 MJ |
1952 | predicate p2 |
1953 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1954 | params_summary, |
c628d1c3 MJ |
1955 | TREE_OPERAND (expr, 1), |
1956 | nonconstant_names); | |
27d020cf JH |
1957 | return p1.or_with (summary->conds, p2); |
1958 | } | |
1959 | else if (TREE_CODE (expr) == COND_EXPR) | |
1960 | { | |
c628d1c3 MJ |
1961 | predicate p1 |
1962 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1963 | params_summary, |
c628d1c3 MJ |
1964 | TREE_OPERAND (expr, 0), |
1965 | nonconstant_names); | |
27d020cf JH |
1966 | if (p1 == true) |
1967 | return p1; | |
1968 | ||
c628d1c3 MJ |
1969 | predicate p2 |
1970 | = will_be_nonconstant_expr_predicate (fbi, summary, | |
40a777e8 | 1971 | params_summary, |
c628d1c3 MJ |
1972 | TREE_OPERAND (expr, 1), |
1973 | nonconstant_names); | |
27d020cf JH |
1974 | if (p2 == true) |
1975 | return p2; | |
1976 | p1 = p1.or_with (summary->conds, p2); | |
c628d1c3 | 1977 | p2 = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 1978 | params_summary, |
27d020cf JH |
1979 | TREE_OPERAND (expr, 2), |
1980 | nonconstant_names); | |
1981 | return p2.or_with (summary->conds, p1); | |
1982 | } | |
5126ae0c KV |
1983 | else if (TREE_CODE (expr) == CALL_EXPR) |
1984 | return true; | |
27d020cf JH |
1985 | else |
1986 | { | |
1987 | debug_tree (expr); | |
1988 | gcc_unreachable (); | |
1989 | } | |
1990 | return false; | |
1991 | } | |
1992 | ||
1993 | ||
1994 | /* Return predicate specifying when the STMT might have result that is not | |
1995 | a compile time constant. */ | |
1996 | ||
1997 | static predicate | |
1998 | will_be_nonconstant_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1999 | class ipa_fn_summary *summary, |
40a777e8 | 2000 | class ipa_node_params *params_summary, |
27d020cf JH |
2001 | gimple *stmt, |
2002 | vec<predicate> nonconstant_names) | |
2003 | { | |
2004 | predicate p = true; | |
2005 | ssa_op_iter iter; | |
2006 | tree use; | |
4307a485 | 2007 | tree param_type = NULL_TREE; |
27d020cf JH |
2008 | predicate op_non_const; |
2009 | bool is_load; | |
2010 | int base_index; | |
27d020cf JH |
2011 | struct agg_position_info aggpos; |
2012 | ||
956d615d | 2013 | /* What statements might be optimized away |
27d020cf JH |
2014 | when their arguments are constant. */ |
2015 | if (gimple_code (stmt) != GIMPLE_ASSIGN | |
2016 | && gimple_code (stmt) != GIMPLE_COND | |
2017 | && gimple_code (stmt) != GIMPLE_SWITCH | |
2018 | && (gimple_code (stmt) != GIMPLE_CALL | |
2019 | || !(gimple_call_flags (stmt) & ECF_CONST))) | |
2020 | return p; | |
2021 | ||
2022 | /* Stores will stay anyway. */ | |
2023 | if (gimple_store_p (stmt)) | |
2024 | return p; | |
2025 | ||
2026 | is_load = gimple_assign_load_p (stmt); | |
2027 | ||
2028 | /* Loads can be optimized when the value is known. */ | |
2029 | if (is_load) | |
2030 | { | |
4307a485 FX |
2031 | tree op = gimple_assign_rhs1 (stmt); |
2032 | if (!decompose_param_expr (fbi, stmt, op, &base_index, ¶m_type, | |
2033 | &aggpos)) | |
27d020cf JH |
2034 | return p; |
2035 | } | |
2036 | else | |
2037 | base_index = -1; | |
2038 | ||
2039 | /* See if we understand all operands before we start | |
2040 | adding conditionals. */ | |
2041 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
2042 | { | |
c628d1c3 | 2043 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
2044 | /* For arguments we can build a condition. */ |
2045 | if (parm && ipa_get_param_decl_index (fbi->info, parm) >= 0) | |
2046 | continue; | |
2047 | if (TREE_CODE (use) != SSA_NAME) | |
2048 | return p; | |
2049 | /* If we know when operand is constant, | |
2050 | we still can say something useful. */ | |
2051 | if (nonconstant_names[SSA_NAME_VERSION (use)] != true) | |
2052 | continue; | |
2053 | return p; | |
2054 | } | |
2055 | ||
2056 | if (is_load) | |
2057 | op_non_const = | |
40a777e8 JH |
2058 | add_condition (summary, params_summary, |
2059 | base_index, param_type, &aggpos, | |
4307a485 | 2060 | predicate::changed, NULL_TREE); |
27d020cf JH |
2061 | else |
2062 | op_non_const = false; | |
2063 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
2064 | { | |
4307a485 | 2065 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
2066 | int index; |
2067 | ||
2068 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) | |
2069 | { | |
2070 | if (index != base_index) | |
40a777e8 JH |
2071 | p = add_condition (summary, params_summary, index, |
2072 | TREE_TYPE (parm), NULL, | |
4307a485 | 2073 | predicate::changed, NULL_TREE); |
27d020cf JH |
2074 | else |
2075 | continue; | |
2076 | } | |
2077 | else | |
2078 | p = nonconstant_names[SSA_NAME_VERSION (use)]; | |
2079 | op_non_const = p.or_with (summary->conds, op_non_const); | |
2080 | } | |
2081 | if ((gimple_code (stmt) == GIMPLE_ASSIGN || gimple_code (stmt) == GIMPLE_CALL) | |
2082 | && gimple_op (stmt, 0) | |
2083 | && TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME) | |
2084 | nonconstant_names[SSA_NAME_VERSION (gimple_op (stmt, 0))] | |
2085 | = op_non_const; | |
2086 | return op_non_const; | |
2087 | } | |
2088 | ||
2089 | struct record_modified_bb_info | |
2090 | { | |
3b2a6901 | 2091 | tree op; |
27d020cf JH |
2092 | bitmap bb_set; |
2093 | gimple *stmt; | |
2094 | }; | |
2095 | ||
956d615d | 2096 | /* Value is initialized in INIT_BB and used in USE_BB. We want to compute |
27d020cf | 2097 | probability how often it changes between USE_BB. |
3b2a6901 | 2098 | INIT_BB->count/USE_BB->count is an estimate, but if INIT_BB |
27d020cf JH |
2099 | is in different loop nest, we can do better. |
2100 | This is all just estimate. In theory we look for minimal cut separating | |
2101 | INIT_BB and USE_BB, but we only want to anticipate loop invariant motion | |
2102 | anyway. */ | |
2103 | ||
2104 | static basic_block | |
2105 | get_minimal_bb (basic_block init_bb, basic_block use_bb) | |
2106 | { | |
99b1c316 | 2107 | class loop *l = find_common_loop (init_bb->loop_father, use_bb->loop_father); |
e7a74006 | 2108 | if (l && l->header->count < init_bb->count) |
27d020cf JH |
2109 | return l->header; |
2110 | return init_bb; | |
2111 | } | |
2112 | ||
2113 | /* Callback of walk_aliased_vdefs. Records basic blocks where the value may be | |
2114 | set except for info->stmt. */ | |
2115 | ||
2116 | static bool | |
2117 | record_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef, void *data) | |
2118 | { | |
2119 | struct record_modified_bb_info *info = | |
2120 | (struct record_modified_bb_info *) data; | |
2121 | if (SSA_NAME_DEF_STMT (vdef) == info->stmt) | |
2122 | return false; | |
3b2a6901 JH |
2123 | if (gimple_clobber_p (SSA_NAME_DEF_STMT (vdef))) |
2124 | return false; | |
27d020cf JH |
2125 | bitmap_set_bit (info->bb_set, |
2126 | SSA_NAME_IS_DEFAULT_DEF (vdef) | |
2127 | ? ENTRY_BLOCK_PTR_FOR_FN (cfun)->index | |
2128 | : get_minimal_bb | |
2129 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2130 | gimple_bb (info->stmt))->index); | |
3b2a6901 JH |
2131 | if (dump_file) |
2132 | { | |
2133 | fprintf (dump_file, " Param "); | |
2134 | print_generic_expr (dump_file, info->op, TDF_SLIM); | |
2135 | fprintf (dump_file, " changed at bb %i, minimal: %i stmt: ", | |
2136 | gimple_bb (SSA_NAME_DEF_STMT (vdef))->index, | |
2137 | get_minimal_bb | |
2138 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2139 | gimple_bb (info->stmt))->index); | |
2140 | print_gimple_stmt (dump_file, SSA_NAME_DEF_STMT (vdef), 0); | |
2141 | } | |
27d020cf JH |
2142 | return false; |
2143 | } | |
2144 | ||
2145 | /* Return probability (based on REG_BR_PROB_BASE) that I-th parameter of STMT | |
2146 | will change since last invocation of STMT. | |
2147 | ||
2148 | Value 0 is reserved for compile time invariants. | |
2149 | For common parameters it is REG_BR_PROB_BASE. For loop invariants it | |
2150 | ought to be REG_BR_PROB_BASE / estimated_iters. */ | |
2151 | ||
2152 | static int | |
c628d1c3 | 2153 | param_change_prob (ipa_func_body_info *fbi, gimple *stmt, int i) |
27d020cf JH |
2154 | { |
2155 | tree op = gimple_call_arg (stmt, i); | |
2156 | basic_block bb = gimple_bb (stmt); | |
2157 | ||
2158 | if (TREE_CODE (op) == WITH_SIZE_EXPR) | |
2159 | op = TREE_OPERAND (op, 0); | |
2160 | ||
2161 | tree base = get_base_address (op); | |
2162 | ||
2163 | /* Global invariants never change. */ | |
2164 | if (is_gimple_min_invariant (base)) | |
2165 | return 0; | |
2166 | ||
2167 | /* We would have to do non-trivial analysis to really work out what | |
2168 | is the probability of value to change (i.e. when init statement | |
2169 | is in a sibling loop of the call). | |
2170 | ||
2171 | We do an conservative estimate: when call is executed N times more often | |
2172 | than the statement defining value, we take the frequency 1/N. */ | |
2173 | if (TREE_CODE (base) == SSA_NAME) | |
2174 | { | |
3b2a6901 | 2175 | profile_count init_count; |
27d020cf | 2176 | |
3b2a6901 | 2177 | if (!bb->count.nonzero_p ()) |
27d020cf JH |
2178 | return REG_BR_PROB_BASE; |
2179 | ||
2180 | if (SSA_NAME_IS_DEFAULT_DEF (base)) | |
3b2a6901 | 2181 | init_count = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2182 | else |
3b2a6901 | 2183 | init_count = get_minimal_bb |
27d020cf | 2184 | (gimple_bb (SSA_NAME_DEF_STMT (base)), |
3b2a6901 | 2185 | gimple_bb (stmt))->count; |
27d020cf | 2186 | |
3b2a6901 JH |
2187 | if (init_count < bb->count) |
2188 | return MAX ((init_count.to_sreal_scale (bb->count) | |
2189 | * REG_BR_PROB_BASE).to_int (), 1); | |
2190 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2191 | } |
2192 | else | |
2193 | { | |
2194 | ao_ref refd; | |
3b2a6901 | 2195 | profile_count max = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2196 | struct record_modified_bb_info info; |
27d020cf JH |
2197 | tree init = ctor_for_folding (base); |
2198 | ||
2199 | if (init != error_mark_node) | |
2200 | return 0; | |
3b2a6901 | 2201 | if (!bb->count.nonzero_p ()) |
27d020cf | 2202 | return REG_BR_PROB_BASE; |
3b2a6901 JH |
2203 | if (dump_file) |
2204 | { | |
4307a485 | 2205 | fprintf (dump_file, " Analyzing param change probability of "); |
3b2a6901 JH |
2206 | print_generic_expr (dump_file, op, TDF_SLIM); |
2207 | fprintf (dump_file, "\n"); | |
2208 | } | |
27d020cf | 2209 | ao_ref_init (&refd, op); |
3b2a6901 | 2210 | info.op = op; |
27d020cf JH |
2211 | info.stmt = stmt; |
2212 | info.bb_set = BITMAP_ALLOC (NULL); | |
c628d1c3 MJ |
2213 | int walked |
2214 | = walk_aliased_vdefs (&refd, gimple_vuse (stmt), record_modified, &info, | |
2215 | NULL, NULL, fbi->aa_walk_budget); | |
2216 | if (walked < 0 || bitmap_bit_p (info.bb_set, bb->index)) | |
27d020cf | 2217 | { |
3b2a6901 | 2218 | if (dump_file) |
c628d1c3 MJ |
2219 | { |
2220 | if (walked < 0) | |
2221 | fprintf (dump_file, " Ran out of AA walking budget.\n"); | |
2222 | else | |
2223 | fprintf (dump_file, " Set in same BB as used.\n"); | |
2224 | } | |
27d020cf JH |
2225 | BITMAP_FREE (info.bb_set); |
2226 | return REG_BR_PROB_BASE; | |
2227 | } | |
2228 | ||
3b2a6901 JH |
2229 | bitmap_iterator bi; |
2230 | unsigned index; | |
2231 | /* Lookup the most frequent update of the value and believe that | |
2232 | it dominates all the other; precise analysis here is difficult. */ | |
27d020cf | 2233 | EXECUTE_IF_SET_IN_BITMAP (info.bb_set, 0, index, bi) |
3b2a6901 JH |
2234 | max = max.max (BASIC_BLOCK_FOR_FN (cfun, index)->count); |
2235 | if (dump_file) | |
2236 | { | |
2237 | fprintf (dump_file, " Set with count "); | |
2238 | max.dump (dump_file); | |
2239 | fprintf (dump_file, " and used with count "); | |
2240 | bb->count.dump (dump_file); | |
2241 | fprintf (dump_file, " freq %f\n", | |
2242 | max.to_sreal_scale (bb->count).to_double ()); | |
2243 | } | |
27d020cf JH |
2244 | |
2245 | BITMAP_FREE (info.bb_set); | |
3b2a6901 JH |
2246 | if (max < bb->count) |
2247 | return MAX ((max.to_sreal_scale (bb->count) | |
2248 | * REG_BR_PROB_BASE).to_int (), 1); | |
2249 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2250 | } |
2251 | } | |
2252 | ||
2253 | /* Find whether a basic block BB is the final block of a (half) diamond CFG | |
2254 | sub-graph and if the predicate the condition depends on is known. If so, | |
2255 | return true and store the pointer the predicate in *P. */ | |
2256 | ||
2257 | static bool | |
c628d1c3 | 2258 | phi_result_unknown_predicate (ipa_func_body_info *fbi, |
40a777e8 JH |
2259 | ipa_fn_summary *summary, |
2260 | class ipa_node_params *params_summary, | |
2261 | basic_block bb, | |
27d020cf JH |
2262 | predicate *p, |
2263 | vec<predicate> nonconstant_names) | |
2264 | { | |
2265 | edge e; | |
2266 | edge_iterator ei; | |
2267 | basic_block first_bb = NULL; | |
2268 | gimple *stmt; | |
2269 | ||
2270 | if (single_pred_p (bb)) | |
2271 | { | |
2272 | *p = false; | |
2273 | return true; | |
2274 | } | |
2275 | ||
2276 | FOR_EACH_EDGE (e, ei, bb->preds) | |
2277 | { | |
2278 | if (single_succ_p (e->src)) | |
2279 | { | |
2280 | if (!single_pred_p (e->src)) | |
2281 | return false; | |
2282 | if (!first_bb) | |
2283 | first_bb = single_pred (e->src); | |
2284 | else if (single_pred (e->src) != first_bb) | |
2285 | return false; | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | if (!first_bb) | |
2290 | first_bb = e->src; | |
2291 | else if (e->src != first_bb) | |
2292 | return false; | |
2293 | } | |
2294 | } | |
2295 | ||
2296 | if (!first_bb) | |
2297 | return false; | |
2298 | ||
2299 | stmt = last_stmt (first_bb); | |
2300 | if (!stmt | |
2301 | || gimple_code (stmt) != GIMPLE_COND | |
2302 | || !is_gimple_ip_invariant (gimple_cond_rhs (stmt))) | |
2303 | return false; | |
2304 | ||
40a777e8 | 2305 | *p = will_be_nonconstant_expr_predicate (fbi, summary, params_summary, |
27d020cf JH |
2306 | gimple_cond_lhs (stmt), |
2307 | nonconstant_names); | |
2308 | if (*p == true) | |
2309 | return false; | |
2310 | else | |
2311 | return true; | |
2312 | } | |
2313 | ||
2314 | /* Given a PHI statement in a function described by inline properties SUMMARY | |
2315 | and *P being the predicate describing whether the selected PHI argument is | |
2316 | known, store a predicate for the result of the PHI statement into | |
2317 | NONCONSTANT_NAMES, if possible. */ | |
2318 | ||
2319 | static void | |
99b1c316 | 2320 | predicate_for_phi_result (class ipa_fn_summary *summary, gphi *phi, |
27d020cf JH |
2321 | predicate *p, |
2322 | vec<predicate> nonconstant_names) | |
2323 | { | |
2324 | unsigned i; | |
2325 | ||
2326 | for (i = 0; i < gimple_phi_num_args (phi); i++) | |
2327 | { | |
2328 | tree arg = gimple_phi_arg (phi, i)->def; | |
2329 | if (!is_gimple_min_invariant (arg)) | |
2330 | { | |
2331 | gcc_assert (TREE_CODE (arg) == SSA_NAME); | |
2332 | *p = p->or_with (summary->conds, | |
2333 | nonconstant_names[SSA_NAME_VERSION (arg)]); | |
2334 | if (*p == true) | |
2335 | return; | |
2336 | } | |
2337 | } | |
2338 | ||
2339 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2340 | { | |
2341 | fprintf (dump_file, "\t\tphi predicate: "); | |
2342 | p->dump (dump_file, summary->conds); | |
2343 | } | |
2344 | nonconstant_names[SSA_NAME_VERSION (gimple_phi_result (phi))] = *p; | |
2345 | } | |
2346 | ||
27d020cf JH |
2347 | /* For a typical usage of __builtin_expect (a<b, 1), we |
2348 | may introduce an extra relation stmt: | |
2349 | With the builtin, we have | |
2350 | t1 = a <= b; | |
2351 | t2 = (long int) t1; | |
2352 | t3 = __builtin_expect (t2, 1); | |
2353 | if (t3 != 0) | |
2354 | goto ... | |
2355 | Without the builtin, we have | |
2356 | if (a<=b) | |
2357 | goto... | |
2358 | This affects the size/time estimation and may have | |
2359 | an impact on the earlier inlining. | |
2360 | Here find this pattern and fix it up later. */ | |
2361 | ||
2362 | static gimple * | |
2363 | find_foldable_builtin_expect (basic_block bb) | |
2364 | { | |
2365 | gimple_stmt_iterator bsi; | |
2366 | ||
2367 | for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
2368 | { | |
2369 | gimple *stmt = gsi_stmt (bsi); | |
2370 | if (gimple_call_builtin_p (stmt, BUILT_IN_EXPECT) | |
1e9168b2 | 2371 | || gimple_call_builtin_p (stmt, BUILT_IN_EXPECT_WITH_PROBABILITY) |
27d020cf JH |
2372 | || gimple_call_internal_p (stmt, IFN_BUILTIN_EXPECT)) |
2373 | { | |
2374 | tree var = gimple_call_lhs (stmt); | |
2375 | tree arg = gimple_call_arg (stmt, 0); | |
2376 | use_operand_p use_p; | |
2377 | gimple *use_stmt; | |
2378 | bool match = false; | |
2379 | bool done = false; | |
2380 | ||
2381 | if (!var || !arg) | |
2382 | continue; | |
2383 | gcc_assert (TREE_CODE (var) == SSA_NAME); | |
2384 | ||
2385 | while (TREE_CODE (arg) == SSA_NAME) | |
2386 | { | |
2387 | gimple *stmt_tmp = SSA_NAME_DEF_STMT (arg); | |
2388 | if (!is_gimple_assign (stmt_tmp)) | |
2389 | break; | |
2390 | switch (gimple_assign_rhs_code (stmt_tmp)) | |
2391 | { | |
2392 | case LT_EXPR: | |
2393 | case LE_EXPR: | |
2394 | case GT_EXPR: | |
2395 | case GE_EXPR: | |
2396 | case EQ_EXPR: | |
2397 | case NE_EXPR: | |
2398 | match = true; | |
2399 | done = true; | |
2400 | break; | |
2401 | CASE_CONVERT: | |
2402 | break; | |
2403 | default: | |
2404 | done = true; | |
2405 | break; | |
2406 | } | |
2407 | if (done) | |
2408 | break; | |
2409 | arg = gimple_assign_rhs1 (stmt_tmp); | |
2410 | } | |
2411 | ||
2412 | if (match && single_imm_use (var, &use_p, &use_stmt) | |
2413 | && gimple_code (use_stmt) == GIMPLE_COND) | |
2414 | return use_stmt; | |
2415 | } | |
2416 | } | |
2417 | return NULL; | |
2418 | } | |
2419 | ||
2420 | /* Return true when the basic blocks contains only clobbers followed by RESX. | |
2421 | Such BBs are kept around to make removal of dead stores possible with | |
2422 | presence of EH and will be optimized out by optimize_clobbers later in the | |
2423 | game. | |
2424 | ||
956d615d | 2425 | NEED_EH is used to recurse in case the clobber has non-EH predecessors |
27d020cf JH |
2426 | that can be clobber only, too.. When it is false, the RESX is not necessary |
2427 | on the end of basic block. */ | |
2428 | ||
2429 | static bool | |
2430 | clobber_only_eh_bb_p (basic_block bb, bool need_eh = true) | |
2431 | { | |
2432 | gimple_stmt_iterator gsi = gsi_last_bb (bb); | |
2433 | edge_iterator ei; | |
2434 | edge e; | |
2435 | ||
2436 | if (need_eh) | |
2437 | { | |
2438 | if (gsi_end_p (gsi)) | |
2439 | return false; | |
2440 | if (gimple_code (gsi_stmt (gsi)) != GIMPLE_RESX) | |
2441 | return false; | |
2442 | gsi_prev (&gsi); | |
2443 | } | |
2444 | else if (!single_succ_p (bb)) | |
2445 | return false; | |
2446 | ||
2447 | for (; !gsi_end_p (gsi); gsi_prev (&gsi)) | |
2448 | { | |
2449 | gimple *stmt = gsi_stmt (gsi); | |
2450 | if (is_gimple_debug (stmt)) | |
2451 | continue; | |
2452 | if (gimple_clobber_p (stmt)) | |
2453 | continue; | |
2454 | if (gimple_code (stmt) == GIMPLE_LABEL) | |
2455 | break; | |
2456 | return false; | |
2457 | } | |
2458 | ||
956d615d | 2459 | /* See if all predecessors are either throws or clobber only BBs. */ |
27d020cf JH |
2460 | FOR_EACH_EDGE (e, ei, bb->preds) |
2461 | if (!(e->flags & EDGE_EH) | |
2462 | && !clobber_only_eh_bb_p (e->src, false)) | |
2463 | return false; | |
2464 | ||
2465 | return true; | |
2466 | } | |
2467 | ||
2468 | /* Return true if STMT compute a floating point expression that may be affected | |
2469 | by -ffast-math and similar flags. */ | |
2470 | ||
2471 | static bool | |
2472 | fp_expression_p (gimple *stmt) | |
2473 | { | |
2474 | ssa_op_iter i; | |
2475 | tree op; | |
2476 | ||
2477 | FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_DEF|SSA_OP_USE) | |
2478 | if (FLOAT_TYPE_P (TREE_TYPE (op))) | |
2479 | return true; | |
2480 | return false; | |
2481 | } | |
2482 | ||
e977dd5e JH |
2483 | /* Return true if T references memory location that is local |
2484 | for the function (that means, dead after return) or read-only. */ | |
2485 | ||
2486 | bool | |
2487 | refs_local_or_readonly_memory_p (tree t) | |
2488 | { | |
2489 | /* Non-escaping memory is fine. */ | |
2490 | t = get_base_address (t); | |
2491 | if ((TREE_CODE (t) == MEM_REF | |
2492 | || TREE_CODE (t) == TARGET_MEM_REF)) | |
2493 | return points_to_local_or_readonly_memory_p (TREE_OPERAND (t, 0)); | |
2494 | ||
2495 | /* Automatic variables are fine. */ | |
2496 | if (DECL_P (t) | |
2497 | && auto_var_in_fn_p (t, current_function_decl)) | |
2498 | return true; | |
2499 | ||
2500 | /* Read-only variables are fine. */ | |
2501 | if (DECL_P (t) && TREE_READONLY (t)) | |
2502 | return true; | |
2503 | ||
2504 | return false; | |
2505 | } | |
2506 | ||
2507 | /* Return true if T is a pointer pointing to memory location that is local | |
2508 | for the function (that means, dead after return) or read-only. */ | |
2509 | ||
2510 | bool | |
2511 | points_to_local_or_readonly_memory_p (tree t) | |
2512 | { | |
2513 | /* See if memory location is clearly invalid. */ | |
2514 | if (integer_zerop (t)) | |
2515 | return flag_delete_null_pointer_checks; | |
2516 | if (TREE_CODE (t) == SSA_NAME) | |
2517 | return !ptr_deref_may_alias_global_p (t); | |
2518 | if (TREE_CODE (t) == ADDR_EXPR) | |
2519 | return refs_local_or_readonly_memory_p (TREE_OPERAND (t, 0)); | |
2520 | return false; | |
2521 | } | |
2522 | ||
2523 | ||
0bceb671 JH |
2524 | /* Analyze function body for NODE. |
2525 | EARLY indicates run from early optimization pipeline. */ | |
27d020cf JH |
2526 | |
2527 | static void | |
0bceb671 | 2528 | analyze_function_body (struct cgraph_node *node, bool early) |
27d020cf | 2529 | { |
9340d345 | 2530 | sreal time = opt_for_fn (node->decl, param_uninlined_function_time); |
27d020cf | 2531 | /* Estimate static overhead for function prologue/epilogue and alignment. */ |
9340d345 | 2532 | int size = opt_for_fn (node->decl, param_uninlined_function_insns); |
27d020cf JH |
2533 | /* Benefits are scaled by probability of elimination that is in range |
2534 | <0,2>. */ | |
2535 | basic_block bb; | |
2536 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
b71289b1 | 2537 | sreal freq; |
99b1c316 | 2538 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
40a777e8 | 2539 | class ipa_node_params *params_summary = early ? NULL : IPA_NODE_REF (node); |
27d020cf JH |
2540 | predicate bb_predicate; |
2541 | struct ipa_func_body_info fbi; | |
2542 | vec<predicate> nonconstant_names = vNULL; | |
2543 | int nblocks, n; | |
2544 | int *order; | |
27d020cf JH |
2545 | gimple *fix_builtin_expect_stmt; |
2546 | ||
2547 | gcc_assert (my_function && my_function->cfg); | |
2548 | gcc_assert (cfun == my_function); | |
2549 | ||
2550 | memset(&fbi, 0, sizeof(fbi)); | |
ddfb1317 | 2551 | vec_free (info->conds); |
27d020cf | 2552 | info->conds = NULL; |
ddfb1317 | 2553 | vec_free (info->size_time_table); |
27d020cf JH |
2554 | info->size_time_table = NULL; |
2555 | ||
2556 | /* When optimizing and analyzing for IPA inliner, initialize loop optimizer | |
2557 | so we can produce proper inline hints. | |
2558 | ||
2559 | When optimizing and analyzing for early inliner, initialize node params | |
2560 | so we can produce correct BB predicates. */ | |
2561 | ||
2562 | if (opt_for_fn (node->decl, optimize)) | |
2563 | { | |
2564 | calculate_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2565 | calculate_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2566 | if (!early) |
2567 | loop_optimizer_init (LOOPS_NORMAL | LOOPS_HAVE_RECORDED_EXITS); | |
2568 | else | |
2569 | { | |
2570 | ipa_check_create_node_params (); | |
2571 | ipa_initialize_node_params (node); | |
2572 | } | |
2573 | ||
2574 | if (ipa_node_params_sum) | |
2575 | { | |
2576 | fbi.node = node; | |
2577 | fbi.info = IPA_NODE_REF (node); | |
2578 | fbi.bb_infos = vNULL; | |
cb3874dc | 2579 | fbi.bb_infos.safe_grow_cleared (last_basic_block_for_fn (cfun), true); |
c628d1c3 | 2580 | fbi.param_count = count_formal_params (node->decl); |
fdfd7f53 | 2581 | fbi.aa_walk_budget = opt_for_fn (node->decl, param_ipa_max_aa_steps); |
c628d1c3 | 2582 | |
27d020cf | 2583 | nonconstant_names.safe_grow_cleared |
cb3874dc | 2584 | (SSANAMES (my_function)->length (), true); |
27d020cf JH |
2585 | } |
2586 | } | |
2587 | ||
2588 | if (dump_file) | |
2589 | fprintf (dump_file, "\nAnalyzing function body size: %s\n", | |
3629ff8a | 2590 | node->dump_name ()); |
27d020cf JH |
2591 | |
2592 | /* When we run into maximal number of entries, we assign everything to the | |
2593 | constant truth case. Be sure to have it in list. */ | |
2594 | bb_predicate = true; | |
2595 | info->account_size_time (0, 0, bb_predicate, bb_predicate); | |
2596 | ||
2597 | bb_predicate = predicate::not_inlined (); | |
9340d345 JH |
2598 | info->account_size_time (opt_for_fn (node->decl, |
2599 | param_uninlined_function_insns) | |
d06f73a3 | 2600 | * ipa_fn_summary::size_scale, |
9340d345 JH |
2601 | opt_for_fn (node->decl, |
2602 | param_uninlined_function_time), | |
d06f73a3 | 2603 | bb_predicate, |
27d020cf JH |
2604 | bb_predicate); |
2605 | ||
2606 | if (fbi.info) | |
40a777e8 | 2607 | compute_bb_predicates (&fbi, node, info, params_summary); |
67ce9099 | 2608 | const profile_count entry_count = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf JH |
2609 | order = XNEWVEC (int, n_basic_blocks_for_fn (cfun)); |
2610 | nblocks = pre_and_rev_post_order_compute (NULL, order, false); | |
2611 | for (n = 0; n < nblocks; n++) | |
2612 | { | |
2613 | bb = BASIC_BLOCK_FOR_FN (cfun, order[n]); | |
67ce9099 | 2614 | freq = bb->count.to_sreal_scale (entry_count); |
27d020cf JH |
2615 | if (clobber_only_eh_bb_p (bb)) |
2616 | { | |
2617 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2618 | fprintf (dump_file, "\n Ignoring BB %i;" | |
2619 | " it will be optimized away by cleanup_clobbers\n", | |
2620 | bb->index); | |
2621 | continue; | |
2622 | } | |
2623 | ||
2624 | /* TODO: Obviously predicates can be propagated down across CFG. */ | |
2625 | if (fbi.info) | |
2626 | { | |
2627 | if (bb->aux) | |
2628 | bb_predicate = *(predicate *) bb->aux; | |
2629 | else | |
2630 | bb_predicate = false; | |
2631 | } | |
2632 | else | |
2633 | bb_predicate = true; | |
2634 | ||
2635 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2636 | { | |
2637 | fprintf (dump_file, "\n BB %i predicate:", bb->index); | |
2638 | bb_predicate.dump (dump_file, info->conds); | |
2639 | } | |
2640 | ||
2641 | if (fbi.info && nonconstant_names.exists ()) | |
2642 | { | |
2643 | predicate phi_predicate; | |
2644 | bool first_phi = true; | |
2645 | ||
2646 | for (gphi_iterator bsi = gsi_start_phis (bb); !gsi_end_p (bsi); | |
2647 | gsi_next (&bsi)) | |
2648 | { | |
2649 | if (first_phi | |
40a777e8 JH |
2650 | && !phi_result_unknown_predicate (&fbi, info, |
2651 | params_summary, | |
2652 | bb, | |
27d020cf JH |
2653 | &phi_predicate, |
2654 | nonconstant_names)) | |
2655 | break; | |
2656 | first_phi = false; | |
2657 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2658 | { | |
2659 | fprintf (dump_file, " "); | |
2660 | print_gimple_stmt (dump_file, gsi_stmt (bsi), 0); | |
2661 | } | |
2662 | predicate_for_phi_result (info, bsi.phi (), &phi_predicate, | |
2663 | nonconstant_names); | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | fix_builtin_expect_stmt = find_foldable_builtin_expect (bb); | |
2668 | ||
d3ed5b56 JH |
2669 | for (gimple_stmt_iterator bsi = gsi_start_nondebug_bb (bb); |
2670 | !gsi_end_p (bsi); gsi_next_nondebug (&bsi)) | |
27d020cf JH |
2671 | { |
2672 | gimple *stmt = gsi_stmt (bsi); | |
2673 | int this_size = estimate_num_insns (stmt, &eni_size_weights); | |
2674 | int this_time = estimate_num_insns (stmt, &eni_time_weights); | |
2675 | int prob; | |
2676 | predicate will_be_nonconstant; | |
2677 | ||
2678 | /* This relation stmt should be folded after we remove | |
956d615d | 2679 | __builtin_expect call. Adjust the cost here. */ |
27d020cf JH |
2680 | if (stmt == fix_builtin_expect_stmt) |
2681 | { | |
2682 | this_size--; | |
2683 | this_time--; | |
2684 | } | |
2685 | ||
2686 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2687 | { | |
2688 | fprintf (dump_file, " "); | |
2689 | print_gimple_stmt (dump_file, stmt, 0); | |
2690 | fprintf (dump_file, "\t\tfreq:%3.2f size:%3i time:%3i\n", | |
b71289b1 | 2691 | freq.to_double (), this_size, |
27d020cf JH |
2692 | this_time); |
2693 | } | |
2694 | ||
27d020cf JH |
2695 | if (is_gimple_call (stmt) |
2696 | && !gimple_call_internal_p (stmt)) | |
2697 | { | |
2698 | struct cgraph_edge *edge = node->get_edge (stmt); | |
99353fcf | 2699 | ipa_call_summary *es = ipa_call_summaries->get_create (edge); |
27d020cf JH |
2700 | |
2701 | /* Special case: results of BUILT_IN_CONSTANT_P will be always | |
2702 | resolved as constant. We however don't want to optimize | |
2703 | out the cgraph edges. */ | |
2704 | if (nonconstant_names.exists () | |
2705 | && gimple_call_builtin_p (stmt, BUILT_IN_CONSTANT_P) | |
2706 | && gimple_call_lhs (stmt) | |
2707 | && TREE_CODE (gimple_call_lhs (stmt)) == SSA_NAME) | |
2708 | { | |
2709 | predicate false_p = false; | |
2710 | nonconstant_names[SSA_NAME_VERSION (gimple_call_lhs (stmt))] | |
2711 | = false_p; | |
2712 | } | |
2713 | if (ipa_node_params_sum) | |
2714 | { | |
2715 | int count = gimple_call_num_args (stmt); | |
2716 | int i; | |
2717 | ||
2718 | if (count) | |
cb3874dc | 2719 | es->param.safe_grow_cleared (count, true); |
27d020cf JH |
2720 | for (i = 0; i < count; i++) |
2721 | { | |
c628d1c3 | 2722 | int prob = param_change_prob (&fbi, stmt, i); |
27d020cf JH |
2723 | gcc_assert (prob >= 0 && prob <= REG_BR_PROB_BASE); |
2724 | es->param[i].change_prob = prob; | |
b89e4559 JH |
2725 | es->param[i].points_to_local_or_readonly_memory |
2726 | = points_to_local_or_readonly_memory_p | |
2727 | (gimple_call_arg (stmt, i)); | |
27d020cf JH |
2728 | } |
2729 | } | |
2730 | ||
2731 | es->call_stmt_size = this_size; | |
2732 | es->call_stmt_time = this_time; | |
2733 | es->loop_depth = bb_loop_depth (bb); | |
2734 | edge_set_predicate (edge, &bb_predicate); | |
959b8c82 JH |
2735 | if (edge->speculative) |
2736 | { | |
845bb366 JH |
2737 | cgraph_edge *indirect |
2738 | = edge->speculative_call_indirect_edge (); | |
959b8c82 | 2739 | ipa_call_summary *es2 |
d380e329 | 2740 | = ipa_call_summaries->get_create (indirect); |
959b8c82 JH |
2741 | ipa_call_summaries->duplicate (edge, indirect, |
2742 | es, es2); | |
f1ba88b1 | 2743 | |
845bb366 JH |
2744 | /* Edge is the first direct call. |
2745 | create and duplicate call summaries for multiple | |
f1ba88b1 | 2746 | speculative call targets. */ |
845bb366 JH |
2747 | for (cgraph_edge *direct |
2748 | = edge->next_speculative_call_target (); | |
2749 | direct; | |
2750 | direct = direct->next_speculative_call_target ()) | |
2751 | { | |
2752 | ipa_call_summary *es3 | |
2753 | = ipa_call_summaries->get_create (direct); | |
2754 | ipa_call_summaries->duplicate (edge, direct, | |
2755 | es, es3); | |
2756 | } | |
959b8c82 | 2757 | } |
27d020cf JH |
2758 | } |
2759 | ||
956d615d | 2760 | /* TODO: When conditional jump or switch is known to be constant, but |
27d020cf JH |
2761 | we did not translate it into the predicates, we really can account |
2762 | just maximum of the possible paths. */ | |
2763 | if (fbi.info) | |
2764 | will_be_nonconstant | |
40a777e8 | 2765 | = will_be_nonconstant_predicate (&fbi, info, params_summary, |
27d020cf JH |
2766 | stmt, nonconstant_names); |
2767 | else | |
2768 | will_be_nonconstant = true; | |
2769 | if (this_time || this_size) | |
2770 | { | |
b71289b1 | 2771 | sreal final_time = (sreal)this_time * freq; |
27d020cf | 2772 | |
c628d1c3 | 2773 | prob = eliminated_by_inlining_prob (&fbi, stmt); |
27d020cf JH |
2774 | if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS)) |
2775 | fprintf (dump_file, | |
2776 | "\t\t50%% will be eliminated by inlining\n"); | |
2777 | if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS)) | |
2778 | fprintf (dump_file, "\t\tWill be eliminated by inlining\n"); | |
2779 | ||
99b1c316 | 2780 | class predicate p = bb_predicate & will_be_nonconstant; |
27d020cf JH |
2781 | |
2782 | /* We can ignore statement when we proved it is never going | |
67914693 | 2783 | to happen, but we cannot do that for call statements |
27d020cf JH |
2784 | because edges are accounted specially. */ |
2785 | ||
2786 | if (*(is_gimple_call (stmt) ? &bb_predicate : &p) != false) | |
2787 | { | |
b71289b1 | 2788 | time += final_time; |
27d020cf JH |
2789 | size += this_size; |
2790 | } | |
2791 | ||
2792 | /* We account everything but the calls. Calls have their own | |
2793 | size/time info attached to cgraph edges. This is necessary | |
2794 | in order to make the cost disappear after inlining. */ | |
2795 | if (!is_gimple_call (stmt)) | |
2796 | { | |
2797 | if (prob) | |
2798 | { | |
2799 | predicate ip = bb_predicate & predicate::not_inlined (); | |
2800 | info->account_size_time (this_size * prob, | |
121356b0 | 2801 | (final_time * prob) / 2, ip, |
27d020cf JH |
2802 | p); |
2803 | } | |
2804 | if (prob != 2) | |
2805 | info->account_size_time (this_size * (2 - prob), | |
121356b0 | 2806 | (final_time * (2 - prob) / 2), |
27d020cf JH |
2807 | bb_predicate, |
2808 | p); | |
2809 | } | |
2810 | ||
2811 | if (!info->fp_expressions && fp_expression_p (stmt)) | |
2812 | { | |
2813 | info->fp_expressions = true; | |
2814 | if (dump_file) | |
2815 | fprintf (dump_file, " fp_expression set\n"); | |
2816 | } | |
a20f263b | 2817 | } |
27d020cf | 2818 | |
a20f263b JH |
2819 | /* Account cost of address calculations in the statements. */ |
2820 | for (unsigned int i = 0; i < gimple_num_ops (stmt); i++) | |
2821 | { | |
2822 | for (tree op = gimple_op (stmt, i); | |
2823 | op && handled_component_p (op); | |
2824 | op = TREE_OPERAND (op, 0)) | |
2825 | if ((TREE_CODE (op) == ARRAY_REF | |
2826 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
2827 | && TREE_CODE (TREE_OPERAND (op, 1)) == SSA_NAME) | |
2828 | { | |
2829 | predicate p = bb_predicate; | |
2830 | if (fbi.info) | |
2831 | p = p & will_be_nonconstant_expr_predicate | |
40a777e8 JH |
2832 | (&fbi, info, params_summary, |
2833 | TREE_OPERAND (op, 1), | |
a20f263b JH |
2834 | nonconstant_names); |
2835 | if (p != false) | |
2836 | { | |
2837 | time += freq; | |
2838 | size += 1; | |
2839 | if (dump_file) | |
2840 | fprintf (dump_file, | |
2841 | "\t\tAccounting address calculation.\n"); | |
2842 | info->account_size_time (ipa_fn_summary::size_scale, | |
2843 | freq, | |
2844 | bb_predicate, | |
2845 | p); | |
2846 | } | |
2847 | } | |
27d020cf | 2848 | } |
a20f263b | 2849 | |
27d020cf JH |
2850 | } |
2851 | } | |
27d020cf JH |
2852 | free (order); |
2853 | ||
2854 | if (nonconstant_names.exists () && !early) | |
2855 | { | |
67ce9099 | 2856 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
99b1c316 | 2857 | class loop *loop; |
67ce9099 MJ |
2858 | unsigned max_loop_predicates = opt_for_fn (node->decl, |
2859 | param_ipa_max_loop_predicates); | |
27d020cf JH |
2860 | |
2861 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2862 | flow_loops_dump (dump_file, NULL, 0); | |
2863 | scev_initialize (); | |
2864 | FOR_EACH_LOOP (loop, 0) | |
2865 | { | |
67ce9099 MJ |
2866 | predicate loop_iterations = true; |
2867 | sreal header_freq; | |
27d020cf JH |
2868 | edge ex; |
2869 | unsigned int j; | |
99b1c316 | 2870 | class tree_niter_desc niter_desc; |
67ce9099 MJ |
2871 | if (!loop->header->aux) |
2872 | continue; | |
27d020cf | 2873 | |
67ce9099 MJ |
2874 | profile_count phdr_count = loop_preheader_edge (loop)->count (); |
2875 | sreal phdr_freq = phdr_count.to_sreal_scale (entry_count); | |
2876 | ||
2877 | bb_predicate = *(predicate *) loop->header->aux; | |
4b9d61f7 | 2878 | auto_vec<edge> exits = get_loop_exit_edges (loop); |
27d020cf JH |
2879 | FOR_EACH_VEC_ELT (exits, j, ex) |
2880 | if (number_of_iterations_exit (loop, ex, &niter_desc, false) | |
2881 | && !is_gimple_min_invariant (niter_desc.niter)) | |
2882 | { | |
2883 | predicate will_be_nonconstant | |
c628d1c3 | 2884 | = will_be_nonconstant_expr_predicate (&fbi, info, |
40a777e8 | 2885 | params_summary, |
27d020cf JH |
2886 | niter_desc.niter, |
2887 | nonconstant_names); | |
2888 | if (will_be_nonconstant != true) | |
2889 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
2890 | if (will_be_nonconstant != true | |
2891 | && will_be_nonconstant != false) | |
27d020cf JH |
2892 | loop_iterations &= will_be_nonconstant; |
2893 | } | |
67ce9099 MJ |
2894 | add_freqcounting_predicate (&s->loop_iterations, loop_iterations, |
2895 | phdr_freq, max_loop_predicates); | |
27d020cf JH |
2896 | } |
2897 | ||
2898 | /* To avoid quadratic behavior we analyze stride predicates only | |
2899 | with respect to the containing loop. Thus we simply iterate | |
2900 | over all defs in the outermost loop body. */ | |
2901 | for (loop = loops_for_fn (cfun)->tree_root->inner; | |
2902 | loop != NULL; loop = loop->next) | |
2903 | { | |
67ce9099 | 2904 | predicate loop_stride = true; |
27d020cf | 2905 | basic_block *body = get_loop_body (loop); |
67ce9099 MJ |
2906 | profile_count phdr_count = loop_preheader_edge (loop)->count (); |
2907 | sreal phdr_freq = phdr_count.to_sreal_scale (entry_count); | |
27d020cf JH |
2908 | for (unsigned i = 0; i < loop->num_nodes; i++) |
2909 | { | |
2910 | gimple_stmt_iterator gsi; | |
67ce9099 MJ |
2911 | if (!body[i]->aux) |
2912 | continue; | |
2913 | ||
2914 | bb_predicate = *(predicate *) body[i]->aux; | |
27d020cf JH |
2915 | for (gsi = gsi_start_bb (body[i]); !gsi_end_p (gsi); |
2916 | gsi_next (&gsi)) | |
2917 | { | |
2918 | gimple *stmt = gsi_stmt (gsi); | |
2919 | ||
2920 | if (!is_gimple_assign (stmt)) | |
2921 | continue; | |
2922 | ||
2923 | tree def = gimple_assign_lhs (stmt); | |
2924 | if (TREE_CODE (def) != SSA_NAME) | |
2925 | continue; | |
2926 | ||
2927 | affine_iv iv; | |
2928 | if (!simple_iv (loop_containing_stmt (stmt), | |
2929 | loop_containing_stmt (stmt), | |
2930 | def, &iv, true) | |
2931 | || is_gimple_min_invariant (iv.step)) | |
2932 | continue; | |
2933 | ||
2934 | predicate will_be_nonconstant | |
40a777e8 JH |
2935 | = will_be_nonconstant_expr_predicate (&fbi, info, |
2936 | params_summary, | |
2937 | iv.step, | |
27d020cf JH |
2938 | nonconstant_names); |
2939 | if (will_be_nonconstant != true) | |
2940 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
2941 | if (will_be_nonconstant != true | |
2942 | && will_be_nonconstant != false) | |
27d020cf JH |
2943 | loop_stride = loop_stride & will_be_nonconstant; |
2944 | } | |
2945 | } | |
67ce9099 MJ |
2946 | add_freqcounting_predicate (&s->loop_strides, loop_stride, |
2947 | phdr_freq, max_loop_predicates); | |
27d020cf JH |
2948 | free (body); |
2949 | } | |
27d020cf JH |
2950 | scev_finalize (); |
2951 | } | |
2952 | FOR_ALL_BB_FN (bb, my_function) | |
2953 | { | |
2954 | edge e; | |
2955 | edge_iterator ei; | |
2956 | ||
2957 | if (bb->aux) | |
2958 | edge_predicate_pool.remove ((predicate *)bb->aux); | |
2959 | bb->aux = NULL; | |
2960 | FOR_EACH_EDGE (e, ei, bb->succs) | |
2961 | { | |
2962 | if (e->aux) | |
2963 | edge_predicate_pool.remove ((predicate *) e->aux); | |
2964 | e->aux = NULL; | |
2965 | } | |
2966 | } | |
56f62793 | 2967 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 2968 | ipa_size_summary *ss = ipa_size_summaries->get (node); |
cf9b0b5f | 2969 | s->time = time; |
f658ad30 | 2970 | ss->self_size = size; |
27d020cf JH |
2971 | nonconstant_names.release (); |
2972 | ipa_release_body_info (&fbi); | |
2973 | if (opt_for_fn (node->decl, optimize)) | |
2974 | { | |
2975 | if (!early) | |
2976 | loop_optimizer_finalize (); | |
2977 | else if (!ipa_edge_args_sum) | |
2978 | ipa_free_all_node_params (); | |
2979 | free_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2980 | free_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2981 | } |
2982 | if (dump_file) | |
2983 | { | |
2984 | fprintf (dump_file, "\n"); | |
0bceb671 | 2985 | ipa_dump_fn_summary (dump_file, node); |
27d020cf JH |
2986 | } |
2987 | } | |
2988 | ||
2989 | ||
0bceb671 JH |
2990 | /* Compute function summary. |
2991 | EARLY is true when we compute parameters during early opts. */ | |
27d020cf JH |
2992 | |
2993 | void | |
0bceb671 | 2994 | compute_fn_summary (struct cgraph_node *node, bool early) |
27d020cf JH |
2995 | { |
2996 | HOST_WIDE_INT self_stack_size; | |
2997 | struct cgraph_edge *e; | |
27d020cf | 2998 | |
a62bfab5 | 2999 | gcc_assert (!node->inlined_to); |
27d020cf | 3000 | |
0bceb671 JH |
3001 | if (!ipa_fn_summaries) |
3002 | ipa_fn_summary_alloc (); | |
27d020cf | 3003 | |
56f62793 ML |
3004 | /* Create a new ipa_fn_summary. */ |
3005 | ((ipa_fn_summary_t *)ipa_fn_summaries)->remove_callees (node); | |
3006 | ipa_fn_summaries->remove (node); | |
f658ad30 JH |
3007 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
3008 | class ipa_size_summary *size_info = ipa_size_summaries->get_create (node); | |
27d020cf JH |
3009 | |
3010 | /* Estimate the stack size for the function if we're optimizing. */ | |
3011 | self_stack_size = optimize && !node->thunk.thunk_p | |
3012 | ? estimated_stack_frame_size (node) : 0; | |
f658ad30 | 3013 | size_info->estimated_self_stack_size = self_stack_size; |
27d020cf | 3014 | info->estimated_stack_size = self_stack_size; |
27d020cf JH |
3015 | |
3016 | if (node->thunk.thunk_p) | |
3017 | { | |
99353fcf | 3018 | ipa_call_summary *es = ipa_call_summaries->get_create (node->callees); |
27d020cf JH |
3019 | predicate t = true; |
3020 | ||
87f94429 | 3021 | node->can_change_signature = false; |
27d020cf JH |
3022 | es->call_stmt_size = eni_size_weights.call_cost; |
3023 | es->call_stmt_time = eni_time_weights.call_cost; | |
d06f73a3 | 3024 | info->account_size_time (ipa_fn_summary::size_scale |
9340d345 JH |
3025 | * opt_for_fn (node->decl, |
3026 | param_uninlined_function_thunk_insns), | |
3027 | opt_for_fn (node->decl, | |
3028 | param_uninlined_function_thunk_time), t, t); | |
27d020cf | 3029 | t = predicate::not_inlined (); |
0bceb671 JH |
3030 | info->account_size_time (2 * ipa_fn_summary::size_scale, 0, t, t); |
3031 | ipa_update_overall_fn_summary (node); | |
f658ad30 | 3032 | size_info->self_size = size_info->size; |
dbcdd561 | 3033 | if (stdarg_p (TREE_TYPE (node->decl))) |
ca04a532 ML |
3034 | { |
3035 | info->inlinable = false; | |
3036 | node->callees->inline_failed = CIF_VARIADIC_THUNK; | |
3037 | } | |
27d020cf JH |
3038 | else |
3039 | info->inlinable = true; | |
3040 | } | |
3041 | else | |
3042 | { | |
3043 | /* Even is_gimple_min_invariant rely on current_function_decl. */ | |
3044 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
3045 | ||
ac0573de JH |
3046 | /* During IPA profile merging we may be called w/o virtual SSA form |
3047 | built. */ | |
3048 | update_ssa (TODO_update_ssa_only_virtuals); | |
3049 | ||
27d020cf JH |
3050 | /* Can this function be inlined at all? */ |
3051 | if (!opt_for_fn (node->decl, optimize) | |
3052 | && !lookup_attribute ("always_inline", | |
3053 | DECL_ATTRIBUTES (node->decl))) | |
3054 | info->inlinable = false; | |
3055 | else | |
3056 | info->inlinable = tree_inlinable_function_p (node->decl); | |
3057 | ||
27d020cf | 3058 | /* Type attributes can use parameter indices to describe them. */ |
3d8fb311 JJ |
3059 | if (TYPE_ATTRIBUTES (TREE_TYPE (node->decl)) |
3060 | /* Likewise for #pragma omp declare simd functions or functions | |
3061 | with simd attribute. */ | |
3062 | || lookup_attribute ("omp declare simd", | |
3063 | DECL_ATTRIBUTES (node->decl))) | |
87f94429 | 3064 | node->can_change_signature = false; |
27d020cf JH |
3065 | else |
3066 | { | |
3067 | /* Otherwise, inlinable functions always can change signature. */ | |
3068 | if (info->inlinable) | |
87f94429 | 3069 | node->can_change_signature = true; |
27d020cf JH |
3070 | else |
3071 | { | |
67914693 | 3072 | /* Functions calling builtin_apply cannot change signature. */ |
27d020cf JH |
3073 | for (e = node->callees; e; e = e->next_callee) |
3074 | { | |
3075 | tree cdecl = e->callee->decl; | |
3d78e008 ML |
3076 | if (fndecl_built_in_p (cdecl, BUILT_IN_APPLY_ARGS) |
3077 | || fndecl_built_in_p (cdecl, BUILT_IN_VA_START)) | |
27d020cf JH |
3078 | break; |
3079 | } | |
87f94429 | 3080 | node->can_change_signature = !e; |
27d020cf JH |
3081 | } |
3082 | } | |
0bceb671 | 3083 | analyze_function_body (node, early); |
27d020cf JH |
3084 | pop_cfun (); |
3085 | } | |
27d020cf JH |
3086 | |
3087 | /* Inlining characteristics are maintained by the cgraph_mark_inline. */ | |
f658ad30 JH |
3088 | size_info->size = size_info->self_size; |
3089 | info->estimated_stack_size = size_info->estimated_self_stack_size; | |
27d020cf JH |
3090 | |
3091 | /* Code above should compute exactly the same result as | |
0bceb671 | 3092 | ipa_update_overall_fn_summary but because computation happens in |
27d020cf | 3093 | different order the roundoff errors result in slight changes. */ |
0bceb671 | 3094 | ipa_update_overall_fn_summary (node); |
959b8c82 | 3095 | /* In LTO mode we may have speculative edges set. */ |
f658ad30 | 3096 | gcc_assert (in_lto_p || size_info->size == size_info->self_size); |
27d020cf JH |
3097 | } |
3098 | ||
3099 | ||
3100 | /* Compute parameters of functions used by inliner using | |
3101 | current_function_decl. */ | |
3102 | ||
3103 | static unsigned int | |
0bceb671 | 3104 | compute_fn_summary_for_current (void) |
27d020cf | 3105 | { |
0bceb671 | 3106 | compute_fn_summary (cgraph_node::get (current_function_decl), true); |
27d020cf JH |
3107 | return 0; |
3108 | } | |
3109 | ||
9d5af1db MJ |
3110 | /* Estimate benefit devirtualizing indirect edge IE and return true if it can |
3111 | be devirtualized and inlined, provided m_known_vals, m_known_contexts and | |
3112 | m_known_aggs in AVALS. Return false straight away if AVALS is NULL. */ | |
27d020cf JH |
3113 | |
3114 | static bool | |
3115 | estimate_edge_devirt_benefit (struct cgraph_edge *ie, | |
3116 | int *size, int *time, | |
9d5af1db | 3117 | ipa_call_arg_values *avals) |
27d020cf JH |
3118 | { |
3119 | tree target; | |
3120 | struct cgraph_node *callee; | |
99b1c316 | 3121 | class ipa_fn_summary *isummary; |
27d020cf JH |
3122 | enum availability avail; |
3123 | bool speculative; | |
3124 | ||
9d5af1db MJ |
3125 | if (!avals |
3126 | || (!avals->m_known_vals.length() && !avals->m_known_contexts.length ())) | |
27d020cf JH |
3127 | return false; |
3128 | if (!opt_for_fn (ie->caller->decl, flag_indirect_inlining)) | |
3129 | return false; | |
3130 | ||
9d5af1db | 3131 | target = ipa_get_indirect_edge_target (ie, avals, &speculative); |
27d020cf JH |
3132 | if (!target || speculative) |
3133 | return false; | |
3134 | ||
3135 | /* Account for difference in cost between indirect and direct calls. */ | |
3136 | *size -= (eni_size_weights.indirect_call_cost - eni_size_weights.call_cost); | |
3137 | *time -= (eni_time_weights.indirect_call_cost - eni_time_weights.call_cost); | |
3138 | gcc_checking_assert (*time >= 0); | |
3139 | gcc_checking_assert (*size >= 0); | |
3140 | ||
3141 | callee = cgraph_node::get (target); | |
3142 | if (!callee || !callee->definition) | |
3143 | return false; | |
3144 | callee = callee->function_symbol (&avail); | |
3145 | if (avail < AVAIL_AVAILABLE) | |
3146 | return false; | |
56f62793 | 3147 | isummary = ipa_fn_summaries->get (callee); |
1d546c60 ML |
3148 | if (isummary == NULL) |
3149 | return false; | |
3150 | ||
27d020cf JH |
3151 | return isummary->inlinable; |
3152 | } | |
3153 | ||
3154 | /* Increase SIZE, MIN_SIZE (if non-NULL) and TIME for size and time needed to | |
9d5af1db MJ |
3155 | handle edge E with probability PROB. Set HINTS accordingly if edge may be |
3156 | devirtualized. AVALS, if non-NULL, describes the context of the call site | |
3157 | as far as values of parameters are concerened. */ | |
27d020cf JH |
3158 | |
3159 | static inline void | |
3160 | estimate_edge_size_and_time (struct cgraph_edge *e, int *size, int *min_size, | |
9d5af1db | 3161 | sreal *time, ipa_call_arg_values *avals, |
0bceb671 | 3162 | ipa_hints *hints) |
27d020cf | 3163 | { |
99b1c316 | 3164 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3165 | int call_size = es->call_stmt_size; |
3166 | int call_time = es->call_stmt_time; | |
3167 | int cur_size; | |
98450d19 | 3168 | |
83263ef5 | 3169 | if (!e->callee && hints && e->maybe_hot_p () |
9d5af1db | 3170 | && estimate_edge_devirt_benefit (e, &call_size, &call_time, avals)) |
27d020cf | 3171 | *hints |= INLINE_HINT_indirect_call; |
0bceb671 | 3172 | cur_size = call_size * ipa_fn_summary::size_scale; |
27d020cf JH |
3173 | *size += cur_size; |
3174 | if (min_size) | |
3175 | *min_size += cur_size; | |
98450d19 | 3176 | if (time) |
41f0e819 | 3177 | *time += ((sreal)call_time) * e->sreal_frequency (); |
27d020cf JH |
3178 | } |
3179 | ||
3180 | ||
27d020cf | 3181 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all |
9d5af1db MJ |
3182 | calls in NODE. POSSIBLE_TRUTHS and AVALS describe the context of the call |
3183 | site. | |
3184 | ||
070e3489 JH |
3185 | Helper for estimate_calls_size_and_time which does the same but |
3186 | (in most cases) faster. */ | |
27d020cf JH |
3187 | |
3188 | static void | |
070e3489 JH |
3189 | estimate_calls_size_and_time_1 (struct cgraph_node *node, int *size, |
3190 | int *min_size, sreal *time, | |
3191 | ipa_hints *hints, | |
3192 | clause_t possible_truths, | |
9d5af1db | 3193 | ipa_call_arg_values *avals) |
27d020cf JH |
3194 | { |
3195 | struct cgraph_edge *e; | |
3196 | for (e = node->callees; e; e = e->next_callee) | |
3197 | { | |
7237f93e JH |
3198 | if (!e->inline_failed) |
3199 | { | |
3200 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
070e3489 | 3201 | estimate_calls_size_and_time_1 (e->callee, size, min_size, time, |
9d5af1db MJ |
3202 | hints, possible_truths, avals); |
3203 | ||
7237f93e JH |
3204 | continue; |
3205 | } | |
3206 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
27d020cf JH |
3207 | |
3208 | /* Do not care about zero sized builtins. */ | |
7237f93e | 3209 | if (!es->call_stmt_size) |
27d020cf JH |
3210 | { |
3211 | gcc_checking_assert (!es->call_stmt_time); | |
3212 | continue; | |
3213 | } | |
3214 | if (!es->predicate | |
3215 | || es->predicate->evaluate (possible_truths)) | |
3216 | { | |
7237f93e | 3217 | /* Predicates of calls shall not use NOT_CHANGED codes, |
956d615d | 3218 | so we do not need to compute probabilities. */ |
7237f93e JH |
3219 | estimate_edge_size_and_time (e, size, |
3220 | es->predicate ? NULL : min_size, | |
9d5af1db | 3221 | time, avals, hints); |
27d020cf JH |
3222 | } |
3223 | } | |
3224 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3225 | { | |
7237f93e | 3226 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3227 | if (!es->predicate |
3228 | || es->predicate->evaluate (possible_truths)) | |
3229 | estimate_edge_size_and_time (e, size, | |
3230 | es->predicate ? NULL : min_size, | |
9d5af1db | 3231 | time, avals, hints); |
27d020cf JH |
3232 | } |
3233 | } | |
3234 | ||
070e3489 JH |
3235 | /* Populate sum->call_size_time_table for edges from NODE. */ |
3236 | ||
3237 | static void | |
3238 | summarize_calls_size_and_time (struct cgraph_node *node, | |
3239 | ipa_fn_summary *sum) | |
3240 | { | |
3241 | struct cgraph_edge *e; | |
3242 | for (e = node->callees; e; e = e->next_callee) | |
3243 | { | |
3244 | if (!e->inline_failed) | |
3245 | { | |
3246 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
3247 | summarize_calls_size_and_time (e->callee, sum); | |
3248 | continue; | |
3249 | } | |
3250 | int size = 0; | |
3251 | sreal time = 0; | |
3252 | ||
9d5af1db | 3253 | estimate_edge_size_and_time (e, &size, NULL, &time, NULL, NULL); |
070e3489 JH |
3254 | |
3255 | struct predicate pred = true; | |
3256 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
3257 | ||
3258 | if (es->predicate) | |
3259 | pred = *es->predicate; | |
3260 | sum->account_size_time (size, time, pred, pred, true); | |
3261 | } | |
3262 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3263 | { | |
3264 | int size = 0; | |
3265 | sreal time = 0; | |
3266 | ||
9d5af1db | 3267 | estimate_edge_size_and_time (e, &size, NULL, &time, NULL, NULL); |
070e3489 JH |
3268 | struct predicate pred = true; |
3269 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
3270 | ||
3271 | if (es->predicate) | |
3272 | pred = *es->predicate; | |
3273 | sum->account_size_time (size, time, pred, pred, true); | |
3274 | } | |
3275 | } | |
3276 | ||
3277 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all | |
9d5af1db MJ |
3278 | calls in NODE. POSSIBLE_TRUTHS and AVALS (the latter if non-NULL) describe |
3279 | context of the call site. */ | |
070e3489 JH |
3280 | |
3281 | static void | |
3282 | estimate_calls_size_and_time (struct cgraph_node *node, int *size, | |
3283 | int *min_size, sreal *time, | |
3284 | ipa_hints *hints, | |
3285 | clause_t possible_truths, | |
9d5af1db | 3286 | ipa_call_arg_values *avals) |
070e3489 JH |
3287 | { |
3288 | class ipa_fn_summary *sum = ipa_fn_summaries->get (node); | |
3289 | bool use_table = true; | |
3290 | ||
3291 | gcc_assert (node->callees || node->indirect_calls); | |
3292 | ||
3293 | /* During early inlining we do not calculate info for very | |
3294 | large functions and thus there is no need for producing | |
3295 | summaries. */ | |
3296 | if (!ipa_node_params_sum) | |
3297 | use_table = false; | |
3298 | /* Do not calculate summaries for simple wrappers; it is waste | |
3299 | of memory. */ | |
3300 | else if (node->callees && node->indirect_calls | |
3301 | && node->callees->inline_failed && !node->callees->next_callee) | |
3302 | use_table = false; | |
3303 | /* If there is an indirect edge that may be optimized, we need | |
3304 | to go the slow way. */ | |
9d5af1db MJ |
3305 | else if (avals && hints |
3306 | && (avals->m_known_vals.length () | |
3307 | || avals->m_known_contexts.length () | |
3308 | || avals->m_known_aggs.length ())) | |
070e3489 JH |
3309 | { |
3310 | class ipa_node_params *params_summary = IPA_NODE_REF (node); | |
3311 | unsigned int nargs = params_summary | |
3312 | ? ipa_get_param_count (params_summary) : 0; | |
3313 | ||
3314 | for (unsigned int i = 0; i < nargs && use_table; i++) | |
3315 | { | |
3316 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
9d5af1db MJ |
3317 | && (avals->safe_sval_at (i) |
3318 | || (avals->m_known_aggs.length () > i | |
3319 | && avals->m_known_aggs[i].items.length ()))) | |
070e3489 JH |
3320 | use_table = false; |
3321 | else if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
9d5af1db MJ |
3322 | && (avals->m_known_contexts.length () > i |
3323 | && !avals->m_known_contexts[i].useless_p ())) | |
070e3489 JH |
3324 | use_table = false; |
3325 | } | |
3326 | } | |
3327 | ||
3328 | /* Fast path is via the call size time table. */ | |
3329 | if (use_table) | |
3330 | { | |
3331 | /* Build summary if it is absent. */ | |
3332 | if (!sum->call_size_time_table) | |
3333 | { | |
3334 | predicate true_pred = true; | |
3335 | sum->account_size_time (0, 0, true_pred, true_pred, true); | |
3336 | summarize_calls_size_and_time (node, sum); | |
3337 | } | |
3338 | ||
3339 | int old_size = *size; | |
3340 | sreal old_time = time ? *time : 0; | |
3341 | ||
3342 | if (min_size) | |
3343 | *min_size += (*sum->call_size_time_table)[0].size; | |
3344 | ||
3345 | unsigned int i; | |
3346 | size_time_entry *e; | |
3347 | ||
3348 | /* Walk the table and account sizes and times. */ | |
3349 | for (i = 0; vec_safe_iterate (sum->call_size_time_table, i, &e); | |
3350 | i++) | |
3351 | if (e->exec_predicate.evaluate (possible_truths)) | |
3352 | { | |
3353 | *size += e->size; | |
3354 | if (time) | |
3355 | *time += e->time; | |
3356 | } | |
3357 | ||
3358 | /* Be careful and see if both methods agree. */ | |
3359 | if ((flag_checking || dump_file) | |
3360 | /* Do not try to sanity check when we know we lost some | |
3361 | precision. */ | |
3362 | && sum->call_size_time_table->length () | |
3363 | < ipa_fn_summary::max_size_time_table_size) | |
3364 | { | |
3365 | estimate_calls_size_and_time_1 (node, &old_size, NULL, &old_time, NULL, | |
9d5af1db | 3366 | possible_truths, avals); |
070e3489 JH |
3367 | gcc_assert (*size == old_size); |
3368 | if (time && (*time - old_time > 1 || *time - old_time < -1) | |
3369 | && dump_file) | |
f5b25e15 | 3370 | fprintf (dump_file, "Time mismatch in call summary %f!=%f\n", |
070e3489 JH |
3371 | old_time.to_double (), |
3372 | time->to_double ()); | |
3373 | } | |
3374 | } | |
3375 | /* Slow path by walking all edges. */ | |
3376 | else | |
3377 | estimate_calls_size_and_time_1 (node, size, min_size, time, hints, | |
9d5af1db | 3378 | possible_truths, avals); |
070e3489 JH |
3379 | } |
3380 | ||
9d5af1db MJ |
3381 | /* Main constructor for ipa call context. Memory allocation of ARG_VALUES |
3382 | is owned by the caller. INLINE_PARAM_SUMMARY is also owned by the | |
3383 | caller. */ | |
3384 | ||
3385 | ipa_call_context::ipa_call_context (cgraph_node *node, clause_t possible_truths, | |
1532500e | 3386 | clause_t nonspec_possible_truths, |
1532500e | 3387 | vec<inline_param_summary> |
9d5af1db MJ |
3388 | inline_param_summary, |
3389 | ipa_auto_call_arg_values *arg_values) | |
1532500e JH |
3390 | : m_node (node), m_possible_truths (possible_truths), |
3391 | m_nonspec_possible_truths (nonspec_possible_truths), | |
3392 | m_inline_param_summary (inline_param_summary), | |
9d5af1db | 3393 | m_avals (arg_values) |
1532500e JH |
3394 | { |
3395 | } | |
3396 | ||
40a777e8 JH |
3397 | /* Set THIS to be a duplicate of CTX. Copy all relevant info. */ |
3398 | ||
ac6f2e59 | 3399 | void |
7d2cb275 | 3400 | ipa_cached_call_context::duplicate_from (const ipa_call_context &ctx) |
ac6f2e59 JH |
3401 | { |
3402 | m_node = ctx.m_node; | |
3403 | m_possible_truths = ctx.m_possible_truths; | |
3404 | m_nonspec_possible_truths = ctx.m_nonspec_possible_truths; | |
40a777e8 | 3405 | class ipa_node_params *params_summary = IPA_NODE_REF (m_node); |
6cf67b62 JH |
3406 | unsigned int nargs = params_summary |
3407 | ? ipa_get_param_count (params_summary) : 0; | |
ac6f2e59 | 3408 | |
40a777e8 JH |
3409 | m_inline_param_summary = vNULL; |
3410 | /* Copy the info only if there is at least one useful entry. */ | |
ac6f2e59 | 3411 | if (ctx.m_inline_param_summary.exists ()) |
40a777e8 JH |
3412 | { |
3413 | unsigned int n = MIN (ctx.m_inline_param_summary.length (), nargs); | |
3414 | ||
3415 | for (unsigned int i = 0; i < n; i++) | |
3416 | if (ipa_is_param_used_by_ipa_predicates (params_summary, i) | |
3417 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3418 | { | |
3419 | m_inline_param_summary | |
3420 | = ctx.m_inline_param_summary.copy (); | |
3421 | break; | |
3422 | } | |
3423 | } | |
9d5af1db MJ |
3424 | m_avals.m_known_vals = vNULL; |
3425 | if (ctx.m_avals.m_known_vals.exists ()) | |
40a777e8 | 3426 | { |
9d5af1db | 3427 | unsigned int n = MIN (ctx.m_avals.m_known_vals.length (), nargs); |
40a777e8 JH |
3428 | |
3429 | for (unsigned int i = 0; i < n; i++) | |
3430 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
9d5af1db | 3431 | && ctx.m_avals.m_known_vals[i]) |
40a777e8 | 3432 | { |
9d5af1db | 3433 | m_avals.m_known_vals = ctx.m_avals.m_known_vals.copy (); |
40a777e8 JH |
3434 | break; |
3435 | } | |
3436 | } | |
3437 | ||
9d5af1db MJ |
3438 | m_avals.m_known_contexts = vNULL; |
3439 | if (ctx.m_avals.m_known_contexts.exists ()) | |
40a777e8 | 3440 | { |
9d5af1db | 3441 | unsigned int n = MIN (ctx.m_avals.m_known_contexts.length (), nargs); |
40a777e8 JH |
3442 | |
3443 | for (unsigned int i = 0; i < n; i++) | |
3444 | if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
9d5af1db | 3445 | && !ctx.m_avals.m_known_contexts[i].useless_p ()) |
40a777e8 | 3446 | { |
9d5af1db | 3447 | m_avals.m_known_contexts = ctx.m_avals.m_known_contexts.copy (); |
40a777e8 JH |
3448 | break; |
3449 | } | |
3450 | } | |
3451 | ||
9d5af1db MJ |
3452 | m_avals.m_known_aggs = vNULL; |
3453 | if (ctx.m_avals.m_known_aggs.exists ()) | |
40a777e8 | 3454 | { |
9d5af1db | 3455 | unsigned int n = MIN (ctx.m_avals.m_known_aggs.length (), nargs); |
40a777e8 JH |
3456 | |
3457 | for (unsigned int i = 0; i < n; i++) | |
3458 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
9d5af1db | 3459 | && !ctx.m_avals.m_known_aggs[i].is_empty ()) |
40a777e8 | 3460 | { |
9d5af1db MJ |
3461 | m_avals.m_known_aggs |
3462 | = ipa_copy_agg_values (ctx.m_avals.m_known_aggs); | |
40a777e8 JH |
3463 | break; |
3464 | } | |
3465 | } | |
9d5af1db MJ |
3466 | |
3467 | m_avals.m_known_value_ranges = vNULL; | |
ac6f2e59 JH |
3468 | } |
3469 | ||
7d2cb275 MJ |
3470 | /* Release memory used by known_vals/contexts/aggs vectors. and |
3471 | inline_param_summary. */ | |
1532500e JH |
3472 | |
3473 | void | |
7d2cb275 | 3474 | ipa_cached_call_context::release () |
1532500e | 3475 | { |
ac6f2e59 JH |
3476 | /* See if context is initialized at first place. */ |
3477 | if (!m_node) | |
3478 | return; | |
7d2cb275 MJ |
3479 | ipa_release_agg_values (m_avals.m_known_aggs, true); |
3480 | m_avals.m_known_vals.release (); | |
3481 | m_avals.m_known_contexts.release (); | |
3482 | m_inline_param_summary.release (); | |
ac6f2e59 JH |
3483 | } |
3484 | ||
3485 | /* Return true if CTX describes the same call context as THIS. */ | |
3486 | ||
3487 | bool | |
3488 | ipa_call_context::equal_to (const ipa_call_context &ctx) | |
3489 | { | |
3490 | if (m_node != ctx.m_node | |
3491 | || m_possible_truths != ctx.m_possible_truths | |
3492 | || m_nonspec_possible_truths != ctx.m_nonspec_possible_truths) | |
3493 | return false; | |
40a777e8 JH |
3494 | |
3495 | class ipa_node_params *params_summary = IPA_NODE_REF (m_node); | |
6cf67b62 JH |
3496 | unsigned int nargs = params_summary |
3497 | ? ipa_get_param_count (params_summary) : 0; | |
40a777e8 JH |
3498 | |
3499 | if (m_inline_param_summary.exists () || ctx.m_inline_param_summary.exists ()) | |
ac6f2e59 | 3500 | { |
40a777e8 JH |
3501 | for (unsigned int i = 0; i < nargs; i++) |
3502 | { | |
3503 | if (!ipa_is_param_used_by_ipa_predicates (params_summary, i)) | |
3504 | continue; | |
3505 | if (i >= m_inline_param_summary.length () | |
3506 | || m_inline_param_summary[i].useless_p ()) | |
3507 | { | |
3508 | if (i < ctx.m_inline_param_summary.length () | |
3509 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3510 | return false; | |
3511 | continue; | |
3512 | } | |
3513 | if (i >= ctx.m_inline_param_summary.length () | |
3514 | || ctx.m_inline_param_summary[i].useless_p ()) | |
3515 | { | |
3516 | if (i < m_inline_param_summary.length () | |
3517 | && !m_inline_param_summary[i].useless_p ()) | |
3518 | return false; | |
3519 | continue; | |
3520 | } | |
3521 | if (!m_inline_param_summary[i].equal_to | |
3522 | (ctx.m_inline_param_summary[i])) | |
3523 | return false; | |
3524 | } | |
ac6f2e59 | 3525 | } |
9d5af1db | 3526 | if (m_avals.m_known_vals.exists () || ctx.m_avals.m_known_vals.exists ()) |
ac6f2e59 | 3527 | { |
40a777e8 | 3528 | for (unsigned int i = 0; i < nargs; i++) |
ac6f2e59 | 3529 | { |
40a777e8 JH |
3530 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) |
3531 | continue; | |
9d5af1db | 3532 | if (i >= m_avals.m_known_vals.length () || !m_avals.m_known_vals[i]) |
40a777e8 | 3533 | { |
9d5af1db MJ |
3534 | if (i < ctx.m_avals.m_known_vals.length () |
3535 | && ctx.m_avals.m_known_vals[i]) | |
40a777e8 JH |
3536 | return false; |
3537 | continue; | |
3538 | } | |
9d5af1db MJ |
3539 | if (i >= ctx.m_avals.m_known_vals.length () |
3540 | || !ctx.m_avals.m_known_vals[i]) | |
40a777e8 | 3541 | { |
9d5af1db | 3542 | if (i < m_avals.m_known_vals.length () && m_avals.m_known_vals[i]) |
40a777e8 JH |
3543 | return false; |
3544 | continue; | |
3545 | } | |
9d5af1db | 3546 | if (m_avals.m_known_vals[i] != ctx.m_avals.m_known_vals[i]) |
ac6f2e59 JH |
3547 | return false; |
3548 | } | |
3549 | } | |
9d5af1db MJ |
3550 | if (m_avals.m_known_contexts.exists () |
3551 | || ctx.m_avals.m_known_contexts.exists ()) | |
ac6f2e59 | 3552 | { |
40a777e8 JH |
3553 | for (unsigned int i = 0; i < nargs; i++) |
3554 | { | |
3555 | if (!ipa_is_param_used_by_polymorphic_call (params_summary, i)) | |
3556 | continue; | |
9d5af1db MJ |
3557 | if (i >= m_avals.m_known_contexts.length () |
3558 | || m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 | 3559 | { |
9d5af1db MJ |
3560 | if (i < ctx.m_avals.m_known_contexts.length () |
3561 | && !ctx.m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 JH |
3562 | return false; |
3563 | continue; | |
3564 | } | |
9d5af1db MJ |
3565 | if (i >= ctx.m_avals.m_known_contexts.length () |
3566 | || ctx.m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 | 3567 | { |
9d5af1db MJ |
3568 | if (i < m_avals.m_known_contexts.length () |
3569 | && !m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 JH |
3570 | return false; |
3571 | continue; | |
3572 | } | |
9d5af1db MJ |
3573 | if (!m_avals.m_known_contexts[i].equal_to |
3574 | (ctx.m_avals.m_known_contexts[i])) | |
40a777e8 JH |
3575 | return false; |
3576 | } | |
ac6f2e59 | 3577 | } |
9d5af1db | 3578 | if (m_avals.m_known_aggs.exists () || ctx.m_avals.m_known_aggs.exists ()) |
ac6f2e59 | 3579 | { |
40a777e8 JH |
3580 | for (unsigned int i = 0; i < nargs; i++) |
3581 | { | |
3582 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) | |
3583 | continue; | |
9d5af1db MJ |
3584 | if (i >= m_avals.m_known_aggs.length () |
3585 | || m_avals.m_known_aggs[i].is_empty ()) | |
40a777e8 | 3586 | { |
9d5af1db MJ |
3587 | if (i < ctx.m_avals.m_known_aggs.length () |
3588 | && !ctx.m_avals.m_known_aggs[i].is_empty ()) | |
40a777e8 JH |
3589 | return false; |
3590 | continue; | |
3591 | } | |
9d5af1db MJ |
3592 | if (i >= ctx.m_avals.m_known_aggs.length () |
3593 | || ctx.m_avals.m_known_aggs[i].is_empty ()) | |
40a777e8 | 3594 | { |
9d5af1db MJ |
3595 | if (i < m_avals.m_known_aggs.length () |
3596 | && !m_avals.m_known_aggs[i].is_empty ()) | |
40a777e8 JH |
3597 | return false; |
3598 | continue; | |
3599 | } | |
9d5af1db | 3600 | if (!m_avals.m_known_aggs[i].equal_to (ctx.m_avals.m_known_aggs[i])) |
40a777e8 JH |
3601 | return false; |
3602 | } | |
ac6f2e59 JH |
3603 | } |
3604 | return true; | |
1532500e | 3605 | } |
27d020cf | 3606 | |
1e7fdc02 MJ |
3607 | /* Fill in the selected fields in ESTIMATES with value estimated for call in |
3608 | this context. Always compute size and min_size. Only compute time and | |
3609 | nonspecialized_time if EST_TIMES is true. Only compute hints if EST_HINTS | |
3610 | is true. */ | |
27d020cf JH |
3611 | |
3612 | void | |
1e7fdc02 MJ |
3613 | ipa_call_context::estimate_size_and_time (ipa_call_estimates *estimates, |
3614 | bool est_times, bool est_hints) | |
27d020cf | 3615 | { |
7237f93e | 3616 | class ipa_fn_summary *info = ipa_fn_summaries->get (m_node); |
27d020cf JH |
3617 | size_time_entry *e; |
3618 | int size = 0; | |
3619 | sreal time = 0; | |
3620 | int min_size = 0; | |
0bceb671 | 3621 | ipa_hints hints = 0; |
67ce9099 MJ |
3622 | sreal loops_with_known_iterations = 0; |
3623 | sreal loops_with_known_strides = 0; | |
27d020cf JH |
3624 | int i; |
3625 | ||
3626 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3627 | { | |
3628 | bool found = false; | |
d597b944 ML |
3629 | fprintf (dump_file, " Estimating body: %s\n" |
3630 | " Known to be false: ", m_node->dump_name ()); | |
27d020cf JH |
3631 | |
3632 | for (i = predicate::not_inlined_condition; | |
3633 | i < (predicate::first_dynamic_condition | |
3634 | + (int) vec_safe_length (info->conds)); i++) | |
1532500e | 3635 | if (!(m_possible_truths & (1 << i))) |
27d020cf JH |
3636 | { |
3637 | if (found) | |
3638 | fprintf (dump_file, ", "); | |
3639 | found = true; | |
3640 | dump_condition (dump_file, info->conds, i); | |
3641 | } | |
3642 | } | |
3643 | ||
070e3489 JH |
3644 | if (m_node->callees || m_node->indirect_calls) |
3645 | estimate_calls_size_and_time (m_node, &size, &min_size, | |
1e7fdc02 MJ |
3646 | est_times ? &time : NULL, |
3647 | est_hints ? &hints : NULL, m_possible_truths, | |
9d5af1db | 3648 | &m_avals); |
83263ef5 | 3649 | |
27d020cf JH |
3650 | sreal nonspecialized_time = time; |
3651 | ||
e3bd08dd | 3652 | min_size += (*info->size_time_table)[0].size; |
27d020cf JH |
3653 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) |
3654 | { | |
1532500e | 3655 | bool exec = e->exec_predicate.evaluate (m_nonspec_possible_truths); |
3494e738 JH |
3656 | |
3657 | /* Because predicates are conservative, it can happen that nonconst is 1 | |
3658 | but exec is 0. */ | |
27d020cf JH |
3659 | if (exec) |
3660 | { | |
1532500e | 3661 | bool nonconst = e->nonconst_predicate.evaluate (m_possible_truths); |
3494e738 | 3662 | |
27d020cf JH |
3663 | gcc_checking_assert (e->time >= 0); |
3664 | gcc_checking_assert (time >= 0); | |
3665 | ||
3666 | /* We compute specialized size only because size of nonspecialized | |
3667 | copy is context independent. | |
3668 | ||
3669 | The difference between nonspecialized execution and specialized is | |
3670 | that nonspecialized is not going to have optimized out computations | |
3671 | known to be constant in a specialized setting. */ | |
3672 | if (nonconst) | |
3673 | size += e->size; | |
1e7fdc02 | 3674 | if (!est_times) |
83263ef5 | 3675 | continue; |
27d020cf JH |
3676 | nonspecialized_time += e->time; |
3677 | if (!nonconst) | |
3678 | ; | |
1532500e | 3679 | else if (!m_inline_param_summary.exists ()) |
27d020cf JH |
3680 | { |
3681 | if (nonconst) | |
3682 | time += e->time; | |
3683 | } | |
3684 | else | |
3685 | { | |
3686 | int prob = e->nonconst_predicate.probability | |
1532500e JH |
3687 | (info->conds, m_possible_truths, |
3688 | m_inline_param_summary); | |
27d020cf JH |
3689 | gcc_checking_assert (prob >= 0); |
3690 | gcc_checking_assert (prob <= REG_BR_PROB_BASE); | |
fd4656a2 JH |
3691 | if (prob == REG_BR_PROB_BASE) |
3692 | time += e->time; | |
3693 | else | |
3694 | time += e->time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
3695 | } |
3696 | gcc_checking_assert (time >= 0); | |
3697 | } | |
3698 | } | |
3699 | gcc_checking_assert ((*info->size_time_table)[0].exec_predicate == true); | |
3700 | gcc_checking_assert ((*info->size_time_table)[0].nonconst_predicate == true); | |
e3bd08dd | 3701 | gcc_checking_assert (min_size >= 0); |
27d020cf JH |
3702 | gcc_checking_assert (size >= 0); |
3703 | gcc_checking_assert (time >= 0); | |
3704 | /* nonspecialized_time should be always bigger than specialized time. | |
3705 | Roundoff issues however may get into the way. */ | |
59d27026 | 3706 | gcc_checking_assert ((nonspecialized_time - time * 99 / 100) >= -1); |
27d020cf JH |
3707 | |
3708 | /* Roundoff issues may make specialized time bigger than nonspecialized | |
956d615d | 3709 | time. We do not really want that to happen because some heuristics |
27d020cf JH |
3710 | may get confused by seeing negative speedups. */ |
3711 | if (time > nonspecialized_time) | |
3712 | time = nonspecialized_time; | |
3713 | ||
1e7fdc02 | 3714 | if (est_hints) |
83263ef5 | 3715 | { |
83263ef5 JH |
3716 | if (info->scc_no) |
3717 | hints |= INLINE_HINT_in_scc; | |
3718 | if (DECL_DECLARED_INLINE_P (m_node->decl)) | |
3719 | hints |= INLINE_HINT_declared_inline; | |
67ce9099 MJ |
3720 | |
3721 | ipa_freqcounting_predicate *fcp; | |
3722 | for (i = 0; vec_safe_iterate (info->loop_iterations, i, &fcp); i++) | |
3723 | if (!fcp->predicate->evaluate (m_possible_truths)) | |
3724 | { | |
3725 | hints |= INLINE_HINT_loop_iterations; | |
3726 | loops_with_known_iterations += fcp->freq; | |
3727 | } | |
3728 | estimates->loops_with_known_iterations = loops_with_known_iterations; | |
3729 | ||
3730 | for (i = 0; vec_safe_iterate (info->loop_strides, i, &fcp); i++) | |
3731 | if (!fcp->predicate->evaluate (m_possible_truths)) | |
3732 | { | |
3733 | hints |= INLINE_HINT_loop_stride; | |
3734 | loops_with_known_strides += fcp->freq; | |
3735 | } | |
3736 | estimates->loops_with_known_strides = loops_with_known_strides; | |
83263ef5 | 3737 | } |
27d020cf | 3738 | |
0bceb671 JH |
3739 | size = RDIV (size, ipa_fn_summary::size_scale); |
3740 | min_size = RDIV (min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
3741 | |
3742 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
1e7fdc02 | 3743 | { |
67ce9099 | 3744 | fprintf (dump_file, "\n size:%i", (int) size); |
1e7fdc02 | 3745 | if (est_times) |
67ce9099 MJ |
3746 | fprintf (dump_file, " time:%f nonspec time:%f", |
3747 | time.to_double (), nonspecialized_time.to_double ()); | |
3748 | if (est_hints) | |
3749 | fprintf (dump_file, " loops with known iterations:%f " | |
3750 | "known strides:%f", loops_with_known_iterations.to_double (), | |
3751 | loops_with_known_strides.to_double ()); | |
3752 | fprintf (dump_file, "\n"); | |
1e7fdc02 MJ |
3753 | } |
3754 | if (est_times) | |
3755 | { | |
3756 | estimates->time = time; | |
3757 | estimates->nonspecialized_time = nonspecialized_time; | |
3758 | } | |
3759 | estimates->size = size; | |
3760 | estimates->min_size = min_size; | |
3761 | if (est_hints) | |
3762 | estimates->hints = hints; | |
27d020cf JH |
3763 | return; |
3764 | } | |
3765 | ||
3766 | ||
3767 | /* Estimate size and time needed to execute callee of EDGE assuming that | |
3768 | parameters known to be constant at caller of EDGE are propagated. | |
3769 | KNOWN_VALS and KNOWN_CONTEXTS are vectors of assumed known constant values | |
3770 | and types for parameters. */ | |
3771 | ||
3772 | void | |
3773 | estimate_ipcp_clone_size_and_time (struct cgraph_node *node, | |
9d5af1db | 3774 | ipa_auto_call_arg_values *avals, |
1e7fdc02 | 3775 | ipa_call_estimates *estimates) |
27d020cf JH |
3776 | { |
3777 | clause_t clause, nonspec_clause; | |
3778 | ||
9d5af1db MJ |
3779 | evaluate_conditions_for_known_args (node, false, avals, &clause, |
3780 | &nonspec_clause); | |
3781 | ipa_call_context ctx (node, clause, nonspec_clause, vNULL, avals); | |
1e7fdc02 | 3782 | ctx.estimate_size_and_time (estimates); |
27d020cf JH |
3783 | } |
3784 | ||
f658ad30 JH |
3785 | /* Return stack frame offset where frame of NODE is supposed to start inside |
3786 | of the function it is inlined to. | |
3787 | Return 0 for functions that are not inlined. */ | |
3788 | ||
3789 | HOST_WIDE_INT | |
3790 | ipa_get_stack_frame_offset (struct cgraph_node *node) | |
3791 | { | |
3792 | HOST_WIDE_INT offset = 0; | |
a62bfab5 | 3793 | if (!node->inlined_to) |
f658ad30 JH |
3794 | return 0; |
3795 | node = node->callers->caller; | |
3796 | while (true) | |
3797 | { | |
3798 | offset += ipa_size_summaries->get (node)->estimated_self_stack_size; | |
a62bfab5 | 3799 | if (!node->inlined_to) |
f658ad30 JH |
3800 | return offset; |
3801 | node = node->callers->caller; | |
3802 | } | |
3803 | } | |
3804 | ||
27d020cf JH |
3805 | |
3806 | /* Update summary information of inline clones after inlining. | |
3807 | Compute peak stack usage. */ | |
3808 | ||
3809 | static void | |
3810 | inline_update_callee_summaries (struct cgraph_node *node, int depth) | |
3811 | { | |
3812 | struct cgraph_edge *e; | |
f658ad30 | 3813 | |
27d020cf JH |
3814 | ipa_propagate_frequency (node); |
3815 | for (e = node->callees; e; e = e->next_callee) | |
3816 | { | |
3817 | if (!e->inline_failed) | |
3818 | inline_update_callee_summaries (e->callee, depth); | |
7237f93e JH |
3819 | else |
3820 | ipa_call_summaries->get (e)->loop_depth += depth; | |
27d020cf JH |
3821 | } |
3822 | for (e = node->indirect_calls; e; e = e->next_callee) | |
56f62793 | 3823 | ipa_call_summaries->get (e)->loop_depth += depth; |
27d020cf JH |
3824 | } |
3825 | ||
b89e4559 JH |
3826 | /* Update change_prob and points_to_local_or_readonly_memory of EDGE after |
3827 | INLINED_EDGE has been inlined. | |
3828 | ||
6cf67b62 | 3829 | When function A is inlined in B and A calls C with parameter that |
956d615d | 3830 | changes with probability PROB1 and C is known to be passthrough |
27d020cf JH |
3831 | of argument if B that change with probability PROB2, the probability |
3832 | of change is now PROB1*PROB2. */ | |
3833 | ||
3834 | static void | |
b89e4559 JH |
3835 | remap_edge_params (struct cgraph_edge *inlined_edge, |
3836 | struct cgraph_edge *edge) | |
27d020cf JH |
3837 | { |
3838 | if (ipa_node_params_sum) | |
3839 | { | |
3840 | int i; | |
99b1c316 | 3841 | class ipa_edge_args *args = IPA_EDGE_REF (edge); |
a33c028e JH |
3842 | if (!args) |
3843 | return; | |
99b1c316 MS |
3844 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
3845 | class ipa_call_summary *inlined_es | |
56f62793 | 3846 | = ipa_call_summaries->get (inlined_edge); |
27d020cf | 3847 | |
8c02e054 JH |
3848 | if (es->param.length () == 0) |
3849 | return; | |
3850 | ||
27d020cf JH |
3851 | for (i = 0; i < ipa_get_cs_argument_count (args); i++) |
3852 | { | |
3853 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
3854 | if (jfunc->type == IPA_JF_PASS_THROUGH | |
3855 | || jfunc->type == IPA_JF_ANCESTOR) | |
3856 | { | |
3857 | int id = jfunc->type == IPA_JF_PASS_THROUGH | |
3858 | ? ipa_get_jf_pass_through_formal_id (jfunc) | |
3859 | : ipa_get_jf_ancestor_formal_id (jfunc); | |
3860 | if (id < (int) inlined_es->param.length ()) | |
3861 | { | |
3862 | int prob1 = es->param[i].change_prob; | |
3863 | int prob2 = inlined_es->param[id].change_prob; | |
3864 | int prob = combine_probabilities (prob1, prob2); | |
3865 | ||
3866 | if (prob1 && prob2 && !prob) | |
3867 | prob = 1; | |
3868 | ||
3869 | es->param[i].change_prob = prob; | |
b89e4559 JH |
3870 | |
3871 | if (inlined_es | |
3872 | ->param[id].points_to_local_or_readonly_memory) | |
3873 | es->param[i].points_to_local_or_readonly_memory = true; | |
27d020cf | 3874 | } |
b89e4559 JH |
3875 | if (!es->param[i].points_to_local_or_readonly_memory |
3876 | && jfunc->type == IPA_JF_CONST | |
3877 | && points_to_local_or_readonly_memory_p | |
3878 | (ipa_get_jf_constant (jfunc))) | |
3879 | es->param[i].points_to_local_or_readonly_memory = true; | |
27d020cf JH |
3880 | } |
3881 | } | |
3882 | } | |
3883 | } | |
3884 | ||
3885 | /* Update edge summaries of NODE after INLINED_EDGE has been inlined. | |
3886 | ||
3887 | Remap predicates of callees of NODE. Rest of arguments match | |
3888 | remap_predicate. | |
3889 | ||
3890 | Also update change probabilities. */ | |
3891 | ||
3892 | static void | |
3893 | remap_edge_summaries (struct cgraph_edge *inlined_edge, | |
3894 | struct cgraph_node *node, | |
99b1c316 | 3895 | class ipa_fn_summary *info, |
40a777e8 | 3896 | class ipa_node_params *params_summary, |
99b1c316 | 3897 | class ipa_fn_summary *callee_info, |
27d020cf | 3898 | vec<int> operand_map, |
14338468 | 3899 | vec<HOST_WIDE_INT> offset_map, |
27d020cf JH |
3900 | clause_t possible_truths, |
3901 | predicate *toplev_predicate) | |
3902 | { | |
3903 | struct cgraph_edge *e, *next; | |
3904 | for (e = node->callees; e; e = next) | |
3905 | { | |
27d020cf JH |
3906 | predicate p; |
3907 | next = e->next_callee; | |
3908 | ||
3909 | if (e->inline_failed) | |
3910 | { | |
6cf67b62 | 3911 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
b89e4559 | 3912 | remap_edge_params (inlined_edge, e); |
27d020cf JH |
3913 | |
3914 | if (es->predicate) | |
3915 | { | |
3916 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
3917 | (info, params_summary, |
3918 | callee_info, operand_map, | |
27d020cf JH |
3919 | offset_map, possible_truths, |
3920 | *toplev_predicate); | |
3921 | edge_set_predicate (e, &p); | |
3922 | } | |
3923 | else | |
3924 | edge_set_predicate (e, toplev_predicate); | |
3925 | } | |
3926 | else | |
40a777e8 JH |
3927 | remap_edge_summaries (inlined_edge, e->callee, info, |
3928 | params_summary, callee_info, | |
27d020cf JH |
3929 | operand_map, offset_map, possible_truths, |
3930 | toplev_predicate); | |
3931 | } | |
3932 | for (e = node->indirect_calls; e; e = next) | |
3933 | { | |
99b1c316 | 3934 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3935 | predicate p; |
3936 | next = e->next_callee; | |
3937 | ||
b89e4559 | 3938 | remap_edge_params (inlined_edge, e); |
27d020cf JH |
3939 | if (es->predicate) |
3940 | { | |
3941 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
3942 | (info, params_summary, |
3943 | callee_info, operand_map, offset_map, | |
27d020cf JH |
3944 | possible_truths, *toplev_predicate); |
3945 | edge_set_predicate (e, &p); | |
3946 | } | |
3947 | else | |
3948 | edge_set_predicate (e, toplev_predicate); | |
3949 | } | |
3950 | } | |
3951 | ||
67ce9099 | 3952 | /* Run remap_after_inlining on each predicate in V. */ |
27d020cf JH |
3953 | |
3954 | static void | |
67ce9099 MJ |
3955 | remap_freqcounting_predicate (class ipa_fn_summary *info, |
3956 | class ipa_node_params *params_summary, | |
3957 | class ipa_fn_summary *callee_info, | |
3958 | vec<ipa_freqcounting_predicate, va_gc> *v, | |
3959 | vec<int> operand_map, | |
14338468 | 3960 | vec<HOST_WIDE_INT> offset_map, |
67ce9099 MJ |
3961 | clause_t possible_truths, |
3962 | predicate *toplev_predicate) | |
27d020cf | 3963 | |
67ce9099 MJ |
3964 | { |
3965 | ipa_freqcounting_predicate *fcp; | |
3966 | for (int i = 0; vec_safe_iterate (v, i, &fcp); i++) | |
27d020cf | 3967 | { |
67ce9099 MJ |
3968 | predicate p |
3969 | = fcp->predicate->remap_after_inlining (info, params_summary, | |
3970 | callee_info, operand_map, | |
3971 | offset_map, possible_truths, | |
3972 | *toplev_predicate); | |
3973 | if (p != false && p != true) | |
3974 | *fcp->predicate &= p; | |
27d020cf JH |
3975 | } |
3976 | } | |
3977 | ||
3978 | /* We inlined EDGE. Update summary of the function we inlined into. */ | |
3979 | ||
3980 | void | |
0bceb671 | 3981 | ipa_merge_fn_summary_after_inlining (struct cgraph_edge *edge) |
27d020cf | 3982 | { |
56f62793 | 3983 | ipa_fn_summary *callee_info = ipa_fn_summaries->get (edge->callee); |
a62bfab5 ML |
3984 | struct cgraph_node *to = (edge->caller->inlined_to |
3985 | ? edge->caller->inlined_to : edge->caller); | |
99b1c316 | 3986 | class ipa_fn_summary *info = ipa_fn_summaries->get (to); |
27d020cf JH |
3987 | clause_t clause = 0; /* not_inline is known to be false. */ |
3988 | size_time_entry *e; | |
f658ad30 | 3989 | auto_vec<int, 8> operand_map; |
14338468 | 3990 | auto_vec<HOST_WIDE_INT, 8> offset_map; |
27d020cf JH |
3991 | int i; |
3992 | predicate toplev_predicate; | |
99b1c316 | 3993 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
40a777e8 JH |
3994 | class ipa_node_params *params_summary = (ipa_node_params_sum |
3995 | ? IPA_NODE_REF (to) : NULL); | |
27d020cf JH |
3996 | |
3997 | if (es->predicate) | |
3998 | toplev_predicate = *es->predicate; | |
3999 | else | |
4000 | toplev_predicate = true; | |
4001 | ||
4002 | info->fp_expressions |= callee_info->fp_expressions; | |
4003 | ||
4004 | if (callee_info->conds) | |
b0d55476 | 4005 | { |
9d5af1db MJ |
4006 | ipa_auto_call_arg_values avals; |
4007 | evaluate_properties_for_edge (edge, true, &clause, NULL, &avals, false); | |
b0d55476 | 4008 | } |
27d020cf JH |
4009 | if (ipa_node_params_sum && callee_info->conds) |
4010 | { | |
99b1c316 | 4011 | class ipa_edge_args *args = IPA_EDGE_REF (edge); |
5a0236f8 | 4012 | int count = args ? ipa_get_cs_argument_count (args) : 0; |
27d020cf JH |
4013 | int i; |
4014 | ||
4015 | if (count) | |
4016 | { | |
cb3874dc ML |
4017 | operand_map.safe_grow_cleared (count, true); |
4018 | offset_map.safe_grow_cleared (count, true); | |
27d020cf JH |
4019 | } |
4020 | for (i = 0; i < count; i++) | |
4021 | { | |
4022 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
4023 | int map = -1; | |
4024 | ||
4025 | /* TODO: handle non-NOPs when merging. */ | |
4026 | if (jfunc->type == IPA_JF_PASS_THROUGH) | |
4027 | { | |
4028 | if (ipa_get_jf_pass_through_operation (jfunc) == NOP_EXPR) | |
4029 | map = ipa_get_jf_pass_through_formal_id (jfunc); | |
4030 | if (!ipa_get_jf_pass_through_agg_preserved (jfunc)) | |
4031 | offset_map[i] = -1; | |
4032 | } | |
4033 | else if (jfunc->type == IPA_JF_ANCESTOR) | |
4034 | { | |
4035 | HOST_WIDE_INT offset = ipa_get_jf_ancestor_offset (jfunc); | |
4036 | if (offset >= 0 && offset < INT_MAX) | |
4037 | { | |
4038 | map = ipa_get_jf_ancestor_formal_id (jfunc); | |
4039 | if (!ipa_get_jf_ancestor_agg_preserved (jfunc)) | |
4040 | offset = -1; | |
4041 | offset_map[i] = offset; | |
4042 | } | |
4043 | } | |
4044 | operand_map[i] = map; | |
40a777e8 | 4045 | gcc_assert (map < ipa_get_param_count (params_summary)); |
27d020cf JH |
4046 | } |
4047 | } | |
83263ef5 | 4048 | sreal freq = edge->sreal_frequency (); |
27d020cf JH |
4049 | for (i = 0; vec_safe_iterate (callee_info->size_time_table, i, &e); i++) |
4050 | { | |
4051 | predicate p; | |
4052 | p = e->exec_predicate.remap_after_inlining | |
40a777e8 JH |
4053 | (info, params_summary, |
4054 | callee_info, operand_map, | |
27d020cf JH |
4055 | offset_map, clause, |
4056 | toplev_predicate); | |
4057 | predicate nonconstp; | |
4058 | nonconstp = e->nonconst_predicate.remap_after_inlining | |
40a777e8 JH |
4059 | (info, params_summary, |
4060 | callee_info, operand_map, | |
27d020cf JH |
4061 | offset_map, clause, |
4062 | toplev_predicate); | |
4063 | if (p != false && nonconstp != false) | |
4064 | { | |
83263ef5 | 4065 | sreal add_time = ((sreal)e->time * freq); |
27d020cf JH |
4066 | int prob = e->nonconst_predicate.probability (callee_info->conds, |
4067 | clause, es->param); | |
fd4656a2 JH |
4068 | if (prob != REG_BR_PROB_BASE) |
4069 | add_time = add_time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
4070 | if (prob != REG_BR_PROB_BASE |
4071 | && dump_file && (dump_flags & TDF_DETAILS)) | |
4072 | { | |
4073 | fprintf (dump_file, "\t\tScaling time by probability:%f\n", | |
4074 | (double) prob / REG_BR_PROB_BASE); | |
4075 | } | |
4076 | info->account_size_time (e->size, add_time, p, nonconstp); | |
4077 | } | |
4078 | } | |
40a777e8 JH |
4079 | remap_edge_summaries (edge, edge->callee, info, params_summary, |
4080 | callee_info, operand_map, | |
27d020cf | 4081 | offset_map, clause, &toplev_predicate); |
67ce9099 MJ |
4082 | remap_freqcounting_predicate (info, params_summary, callee_info, |
4083 | info->loop_iterations, operand_map, | |
4084 | offset_map, clause, &toplev_predicate); | |
4085 | remap_freqcounting_predicate (info, params_summary, callee_info, | |
4086 | info->loop_strides, operand_map, | |
4087 | offset_map, clause, &toplev_predicate); | |
27d020cf | 4088 | |
f658ad30 JH |
4089 | HOST_WIDE_INT stack_frame_offset = ipa_get_stack_frame_offset (edge->callee); |
4090 | HOST_WIDE_INT peak = stack_frame_offset + callee_info->estimated_stack_size; | |
27d020cf | 4091 | |
f658ad30 JH |
4092 | if (info->estimated_stack_size < peak) |
4093 | info->estimated_stack_size = peak; | |
4094 | ||
4095 | inline_update_callee_summaries (edge->callee, es->loop_depth); | |
d2bcf46c JH |
4096 | if (info->call_size_time_table) |
4097 | { | |
4098 | int edge_size = 0; | |
4099 | sreal edge_time = 0; | |
4100 | ||
9d5af1db | 4101 | estimate_edge_size_and_time (edge, &edge_size, NULL, &edge_time, NULL, 0); |
d2bcf46c JH |
4102 | /* Unaccount size and time of the optimized out call. */ |
4103 | info->account_size_time (-edge_size, -edge_time, | |
4104 | es->predicate ? *es->predicate : true, | |
4105 | es->predicate ? *es->predicate : true, | |
4106 | true); | |
4107 | /* Account new calls. */ | |
4108 | summarize_calls_size_and_time (edge->callee, info); | |
4109 | } | |
f658ad30 JH |
4110 | |
4111 | /* Free summaries that are not maintained for inline clones/edges. */ | |
4112 | ipa_call_summaries->remove (edge); | |
4113 | ipa_fn_summaries->remove (edge->callee); | |
7237f93e | 4114 | ipa_remove_from_growth_caches (edge); |
27d020cf JH |
4115 | } |
4116 | ||
f658ad30 | 4117 | /* For performance reasons ipa_merge_fn_summary_after_inlining is not updating |
d2bcf46c JH |
4118 | overall size and time. Recompute it. |
4119 | If RESET is true also recompute call_time_size_table. */ | |
27d020cf JH |
4120 | |
4121 | void | |
d2bcf46c | 4122 | ipa_update_overall_fn_summary (struct cgraph_node *node, bool reset) |
27d020cf | 4123 | { |
7237f93e JH |
4124 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
4125 | class ipa_size_summary *size_info = ipa_size_summaries->get (node); | |
27d020cf JH |
4126 | size_time_entry *e; |
4127 | int i; | |
4128 | ||
f658ad30 | 4129 | size_info->size = 0; |
27d020cf JH |
4130 | info->time = 0; |
4131 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) | |
4132 | { | |
f658ad30 | 4133 | size_info->size += e->size; |
27d020cf JH |
4134 | info->time += e->time; |
4135 | } | |
e3bd08dd | 4136 | info->min_size = (*info->size_time_table)[0].size; |
d2bcf46c JH |
4137 | if (reset) |
4138 | vec_free (info->call_size_time_table); | |
070e3489 JH |
4139 | if (node->callees || node->indirect_calls) |
4140 | estimate_calls_size_and_time (node, &size_info->size, &info->min_size, | |
4141 | &info->time, NULL, | |
4142 | ~(clause_t) (1 << predicate::false_condition), | |
9d5af1db | 4143 | NULL); |
e3bd08dd JH |
4144 | size_info->size = RDIV (size_info->size, ipa_fn_summary::size_scale); |
4145 | info->min_size = RDIV (info->min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
4146 | } |
4147 | ||
4148 | ||
4149 | /* This function performs intraprocedural analysis in NODE that is required to | |
4150 | inline indirect calls. */ | |
4151 | ||
4152 | static void | |
4153 | inline_indirect_intraprocedural_analysis (struct cgraph_node *node) | |
4154 | { | |
4155 | ipa_analyze_node (node); | |
4156 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
4157 | { | |
4158 | ipa_print_node_params (dump_file, node); | |
4159 | ipa_print_node_jump_functions (dump_file, node); | |
4160 | } | |
4161 | } | |
4162 | ||
4163 | ||
4164 | /* Note function body size. */ | |
4165 | ||
4166 | void | |
4167 | inline_analyze_function (struct cgraph_node *node) | |
4168 | { | |
4169 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
4170 | ||
4171 | if (dump_file) | |
d597b944 | 4172 | fprintf (dump_file, "\nAnalyzing function: %s\n", node->dump_name ()); |
27d020cf JH |
4173 | if (opt_for_fn (node->decl, optimize) && !node->thunk.thunk_p) |
4174 | inline_indirect_intraprocedural_analysis (node); | |
0bceb671 | 4175 | compute_fn_summary (node, false); |
27d020cf JH |
4176 | if (!optimize) |
4177 | { | |
4178 | struct cgraph_edge *e; | |
4179 | for (e = node->callees; e; e = e->next_callee) | |
4180 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4181 | for (e = node->indirect_calls; e; e = e->next_callee) | |
4182 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4183 | } | |
4184 | ||
4185 | pop_cfun (); | |
4186 | } | |
4187 | ||
4188 | ||
4189 | /* Called when new function is inserted to callgraph late. */ | |
4190 | ||
4191 | void | |
0bceb671 | 4192 | ipa_fn_summary_t::insert (struct cgraph_node *node, ipa_fn_summary *) |
27d020cf JH |
4193 | { |
4194 | inline_analyze_function (node); | |
4195 | } | |
4196 | ||
4197 | /* Note function body size. */ | |
4198 | ||
d2db2e6b JH |
4199 | static void |
4200 | ipa_fn_summary_generate (void) | |
27d020cf JH |
4201 | { |
4202 | struct cgraph_node *node; | |
4203 | ||
4204 | FOR_EACH_DEFINED_FUNCTION (node) | |
4205 | if (DECL_STRUCT_FUNCTION (node->decl)) | |
87f94429 | 4206 | node->versionable = tree_versionable_function_p (node->decl); |
27d020cf | 4207 | |
0bceb671 | 4208 | ipa_fn_summary_alloc (); |
27d020cf | 4209 | |
0bceb671 | 4210 | ipa_fn_summaries->enable_insertion_hook (); |
27d020cf JH |
4211 | |
4212 | ipa_register_cgraph_hooks (); | |
27d020cf JH |
4213 | |
4214 | FOR_EACH_DEFINED_FUNCTION (node) | |
29f1e2b1 JH |
4215 | if (!node->alias |
4216 | && (flag_generate_lto || flag_generate_offload|| flag_wpa | |
4217 | || opt_for_fn (node->decl, optimize))) | |
27d020cf JH |
4218 | inline_analyze_function (node); |
4219 | } | |
4220 | ||
4221 | ||
4222 | /* Write inline summary for edge E to OB. */ | |
4223 | ||
4224 | static void | |
99b1c316 | 4225 | read_ipa_call_summary (class lto_input_block *ib, struct cgraph_edge *e, |
ddfb1317 | 4226 | bool prevails) |
27d020cf | 4227 | { |
99b1c316 | 4228 | class ipa_call_summary *es = prevails |
ddfb1317 | 4229 | ? ipa_call_summaries->get_create (e) : NULL; |
27d020cf JH |
4230 | predicate p; |
4231 | int length, i; | |
4232 | ||
ddfb1317 JH |
4233 | int size = streamer_read_uhwi (ib); |
4234 | int time = streamer_read_uhwi (ib); | |
4235 | int depth = streamer_read_uhwi (ib); | |
4236 | ||
4237 | if (es) | |
4238 | { | |
4239 | es->call_stmt_size = size; | |
4240 | es->call_stmt_time = time; | |
4241 | es->loop_depth = depth; | |
4242 | } | |
0fab169b PK |
4243 | |
4244 | bitpack_d bp = streamer_read_bitpack (ib); | |
ddfb1317 JH |
4245 | if (es) |
4246 | es->is_return_callee_uncaptured = bp_unpack_value (&bp, 1); | |
4247 | else | |
4248 | bp_unpack_value (&bp, 1); | |
0fab169b | 4249 | |
27d020cf | 4250 | p.stream_in (ib); |
ddfb1317 JH |
4251 | if (es) |
4252 | edge_set_predicate (e, &p); | |
27d020cf | 4253 | length = streamer_read_uhwi (ib); |
ddfb1317 | 4254 | if (length && es && e->possibly_call_in_translation_unit_p ()) |
27d020cf | 4255 | { |
cb3874dc | 4256 | es->param.safe_grow_cleared (length, true); |
27d020cf | 4257 | for (i = 0; i < length; i++) |
b89e4559 JH |
4258 | { |
4259 | es->param[i].change_prob = streamer_read_uhwi (ib); | |
4260 | es->param[i].points_to_local_or_readonly_memory | |
4261 | = streamer_read_uhwi (ib); | |
4262 | } | |
27d020cf | 4263 | } |
ddfb1317 JH |
4264 | else |
4265 | { | |
4266 | for (i = 0; i < length; i++) | |
b89e4559 JH |
4267 | { |
4268 | streamer_read_uhwi (ib); | |
4269 | streamer_read_uhwi (ib); | |
4270 | } | |
ddfb1317 | 4271 | } |
27d020cf JH |
4272 | } |
4273 | ||
4274 | ||
4275 | /* Stream in inline summaries from the section. */ | |
4276 | ||
4277 | static void | |
4278 | inline_read_section (struct lto_file_decl_data *file_data, const char *data, | |
4279 | size_t len) | |
4280 | { | |
4281 | const struct lto_function_header *header = | |
4282 | (const struct lto_function_header *) data; | |
4283 | const int cfg_offset = sizeof (struct lto_function_header); | |
4284 | const int main_offset = cfg_offset + header->cfg_size; | |
4285 | const int string_offset = main_offset + header->main_size; | |
99b1c316 | 4286 | class data_in *data_in; |
27d020cf JH |
4287 | unsigned int i, count2, j; |
4288 | unsigned int f_count; | |
4289 | ||
4290 | lto_input_block ib ((const char *) data + main_offset, header->main_size, | |
4291 | file_data->mode_table); | |
4292 | ||
4293 | data_in = | |
4294 | lto_data_in_create (file_data, (const char *) data + string_offset, | |
4295 | header->string_size, vNULL); | |
4296 | f_count = streamer_read_uhwi (&ib); | |
4297 | for (i = 0; i < f_count; i++) | |
4298 | { | |
4299 | unsigned int index; | |
4300 | struct cgraph_node *node; | |
99b1c316 | 4301 | class ipa_fn_summary *info; |
40a777e8 | 4302 | class ipa_node_params *params_summary; |
f658ad30 | 4303 | class ipa_size_summary *size_info; |
27d020cf JH |
4304 | lto_symtab_encoder_t encoder; |
4305 | struct bitpack_d bp; | |
4306 | struct cgraph_edge *e; | |
4307 | predicate p; | |
4308 | ||
4309 | index = streamer_read_uhwi (&ib); | |
4310 | encoder = file_data->symtab_node_encoder; | |
4311 | node = dyn_cast<cgraph_node *> (lto_symtab_encoder_deref (encoder, | |
4312 | index)); | |
ddfb1317 | 4313 | info = node->prevailing_p () ? ipa_fn_summaries->get_create (node) : NULL; |
40a777e8 | 4314 | params_summary = node->prevailing_p () ? IPA_NODE_REF (node) : NULL; |
f658ad30 JH |
4315 | size_info = node->prevailing_p () |
4316 | ? ipa_size_summaries->get_create (node) : NULL; | |
27d020cf | 4317 | |
ddfb1317 JH |
4318 | int stack_size = streamer_read_uhwi (&ib); |
4319 | int size = streamer_read_uhwi (&ib); | |
4320 | sreal time = sreal::stream_in (&ib); | |
4321 | ||
4322 | if (info) | |
4323 | { | |
4324 | info->estimated_stack_size | |
f658ad30 JH |
4325 | = size_info->estimated_self_stack_size = stack_size; |
4326 | size_info->size = size_info->self_size = size; | |
ddfb1317 JH |
4327 | info->time = time; |
4328 | } | |
27d020cf JH |
4329 | |
4330 | bp = streamer_read_bitpack (&ib); | |
ddfb1317 JH |
4331 | if (info) |
4332 | { | |
4333 | info->inlinable = bp_unpack_value (&bp, 1); | |
4334 | info->fp_expressions = bp_unpack_value (&bp, 1); | |
4335 | } | |
4336 | else | |
4337 | { | |
4338 | bp_unpack_value (&bp, 1); | |
4339 | bp_unpack_value (&bp, 1); | |
4340 | } | |
27d020cf JH |
4341 | |
4342 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4343 | gcc_assert (!info || !info->conds); |
360386c7 JH |
4344 | if (info) |
4345 | vec_safe_reserve_exact (info->conds, count2); | |
27d020cf JH |
4346 | for (j = 0; j < count2; j++) |
4347 | { | |
4348 | struct condition c; | |
4307a485 | 4349 | unsigned int k, count3; |
27d020cf | 4350 | c.operand_num = streamer_read_uhwi (&ib); |
27d020cf | 4351 | c.code = (enum tree_code) streamer_read_uhwi (&ib); |
4307a485 | 4352 | c.type = stream_read_tree (&ib, data_in); |
27d020cf JH |
4353 | c.val = stream_read_tree (&ib, data_in); |
4354 | bp = streamer_read_bitpack (&ib); | |
4355 | c.agg_contents = bp_unpack_value (&bp, 1); | |
4356 | c.by_ref = bp_unpack_value (&bp, 1); | |
4357 | if (c.agg_contents) | |
4358 | c.offset = streamer_read_uhwi (&ib); | |
4307a485 | 4359 | count3 = streamer_read_uhwi (&ib); |
360386c7 JH |
4360 | c.param_ops = NULL; |
4361 | if (info) | |
4362 | vec_safe_reserve_exact (c.param_ops, count3); | |
40a777e8 JH |
4363 | if (params_summary) |
4364 | ipa_set_param_used_by_ipa_predicates | |
4365 | (params_summary, c.operand_num, true); | |
4307a485 FX |
4366 | for (k = 0; k < count3; k++) |
4367 | { | |
4368 | struct expr_eval_op op; | |
4369 | enum gimple_rhs_class rhs_class; | |
4370 | op.code = (enum tree_code) streamer_read_uhwi (&ib); | |
4371 | op.type = stream_read_tree (&ib, data_in); | |
4372 | switch (rhs_class = get_gimple_rhs_class (op.code)) | |
4373 | { | |
4374 | case GIMPLE_UNARY_RHS: | |
4375 | op.index = 0; | |
4376 | op.val[0] = NULL_TREE; | |
4377 | op.val[1] = NULL_TREE; | |
4378 | break; | |
4379 | ||
4380 | case GIMPLE_BINARY_RHS: | |
4381 | case GIMPLE_TERNARY_RHS: | |
4382 | bp = streamer_read_bitpack (&ib); | |
4383 | op.index = bp_unpack_value (&bp, 2); | |
4384 | op.val[0] = stream_read_tree (&ib, data_in); | |
4385 | if (rhs_class == GIMPLE_BINARY_RHS) | |
4386 | op.val[1] = NULL_TREE; | |
4387 | else | |
4388 | op.val[1] = stream_read_tree (&ib, data_in); | |
4389 | break; | |
4390 | ||
4391 | default: | |
4392 | fatal_error (UNKNOWN_LOCATION, | |
4393 | "invalid fnsummary in LTO stream"); | |
4394 | } | |
360386c7 JH |
4395 | if (info) |
4396 | c.param_ops->quick_push (op); | |
4307a485 | 4397 | } |
ddfb1317 | 4398 | if (info) |
360386c7 | 4399 | info->conds->quick_push (c); |
27d020cf JH |
4400 | } |
4401 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4402 | gcc_assert (!info || !info->size_time_table); |
360386c7 JH |
4403 | if (info && count2) |
4404 | vec_safe_reserve_exact (info->size_time_table, count2); | |
27d020cf JH |
4405 | for (j = 0; j < count2; j++) |
4406 | { | |
99b1c316 | 4407 | class size_time_entry e; |
27d020cf JH |
4408 | |
4409 | e.size = streamer_read_uhwi (&ib); | |
4410 | e.time = sreal::stream_in (&ib); | |
4411 | e.exec_predicate.stream_in (&ib); | |
4412 | e.nonconst_predicate.stream_in (&ib); | |
4413 | ||
ddfb1317 | 4414 | if (info) |
360386c7 | 4415 | info->size_time_table->quick_push (e); |
27d020cf JH |
4416 | } |
4417 | ||
67ce9099 MJ |
4418 | count2 = streamer_read_uhwi (&ib); |
4419 | for (j = 0; j < count2; j++) | |
4420 | { | |
4421 | p.stream_in (&ib); | |
4422 | sreal fcp_freq = sreal::stream_in (&ib); | |
4423 | if (info) | |
4424 | { | |
4425 | ipa_freqcounting_predicate fcp; | |
4426 | fcp.predicate = NULL; | |
4427 | set_hint_predicate (&fcp.predicate, p); | |
4428 | fcp.freq = fcp_freq; | |
4429 | vec_safe_push (info->loop_iterations, fcp); | |
4430 | } | |
4431 | } | |
4432 | count2 = streamer_read_uhwi (&ib); | |
4433 | for (j = 0; j < count2; j++) | |
4434 | { | |
4435 | p.stream_in (&ib); | |
4436 | sreal fcp_freq = sreal::stream_in (&ib); | |
4437 | if (info) | |
4438 | { | |
4439 | ipa_freqcounting_predicate fcp; | |
4440 | fcp.predicate = NULL; | |
4441 | set_hint_predicate (&fcp.predicate, p); | |
4442 | fcp.freq = fcp_freq; | |
4443 | vec_safe_push (info->loop_strides, fcp); | |
4444 | } | |
4445 | } | |
27d020cf | 4446 | for (e = node->callees; e; e = e->next_callee) |
ddfb1317 | 4447 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf | 4448 | for (e = node->indirect_calls; e; e = e->next_callee) |
ddfb1317 | 4449 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf JH |
4450 | } |
4451 | ||
0bceb671 | 4452 | lto_free_section_data (file_data, LTO_section_ipa_fn_summary, NULL, data, |
27d020cf JH |
4453 | len); |
4454 | lto_data_in_delete (data_in); | |
4455 | } | |
4456 | ||
4457 | ||
4458 | /* Read inline summary. Jump functions are shared among ipa-cp | |
4459 | and inliner, so when ipa-cp is active, we don't need to write them | |
4460 | twice. */ | |
4461 | ||
d2db2e6b JH |
4462 | static void |
4463 | ipa_fn_summary_read (void) | |
27d020cf JH |
4464 | { |
4465 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
4466 | struct lto_file_decl_data *file_data; | |
4467 | unsigned int j = 0; | |
4468 | ||
0bceb671 | 4469 | ipa_fn_summary_alloc (); |
27d020cf JH |
4470 | |
4471 | while ((file_data = file_data_vec[j++])) | |
4472 | { | |
4473 | size_t len; | |
3c56d8d8 ML |
4474 | const char *data |
4475 | = lto_get_summary_section_data (file_data, LTO_section_ipa_fn_summary, | |
4476 | &len); | |
27d020cf JH |
4477 | if (data) |
4478 | inline_read_section (file_data, data, len); | |
4479 | else | |
4480 | /* Fatal error here. We do not want to support compiling ltrans units | |
4481 | with different version of compiler or different flags than the WPA | |
4482 | unit, so this should never happen. */ | |
4483 | fatal_error (input_location, | |
4484 | "ipa inline summary is missing in input file"); | |
4485 | } | |
29f1e2b1 JH |
4486 | ipa_register_cgraph_hooks (); |
4487 | if (!flag_ipa_cp) | |
4488 | ipa_prop_read_jump_functions (); | |
27d020cf | 4489 | |
0bceb671 JH |
4490 | gcc_assert (ipa_fn_summaries); |
4491 | ipa_fn_summaries->enable_insertion_hook (); | |
27d020cf JH |
4492 | } |
4493 | ||
4494 | ||
4495 | /* Write inline summary for edge E to OB. */ | |
4496 | ||
4497 | static void | |
4498 | write_ipa_call_summary (struct output_block *ob, struct cgraph_edge *e) | |
4499 | { | |
99b1c316 | 4500 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
4501 | int i; |
4502 | ||
4503 | streamer_write_uhwi (ob, es->call_stmt_size); | |
4504 | streamer_write_uhwi (ob, es->call_stmt_time); | |
4505 | streamer_write_uhwi (ob, es->loop_depth); | |
0fab169b PK |
4506 | |
4507 | bitpack_d bp = bitpack_create (ob->main_stream); | |
4508 | bp_pack_value (&bp, es->is_return_callee_uncaptured, 1); | |
4509 | streamer_write_bitpack (&bp); | |
4510 | ||
27d020cf JH |
4511 | if (es->predicate) |
4512 | es->predicate->stream_out (ob); | |
4513 | else | |
4514 | streamer_write_uhwi (ob, 0); | |
4515 | streamer_write_uhwi (ob, es->param.length ()); | |
4516 | for (i = 0; i < (int) es->param.length (); i++) | |
b89e4559 JH |
4517 | { |
4518 | streamer_write_uhwi (ob, es->param[i].change_prob); | |
4519 | streamer_write_uhwi (ob, es->param[i].points_to_local_or_readonly_memory); | |
4520 | } | |
27d020cf JH |
4521 | } |
4522 | ||
4523 | ||
4524 | /* Write inline summary for node in SET. | |
4525 | Jump functions are shared among ipa-cp and inliner, so when ipa-cp is | |
4526 | active, we don't need to write them twice. */ | |
4527 | ||
d2db2e6b JH |
4528 | static void |
4529 | ipa_fn_summary_write (void) | |
27d020cf | 4530 | { |
0bceb671 | 4531 | struct output_block *ob = create_output_block (LTO_section_ipa_fn_summary); |
16570c12 | 4532 | lto_symtab_encoder_iterator lsei; |
27d020cf JH |
4533 | lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder; |
4534 | unsigned int count = 0; | |
27d020cf | 4535 | |
16570c12 JJ |
4536 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4537 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4538 | { |
16570c12 JJ |
4539 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4540 | if (cnode->definition && !cnode->alias) | |
27d020cf JH |
4541 | count++; |
4542 | } | |
4543 | streamer_write_uhwi (ob, count); | |
4544 | ||
16570c12 JJ |
4545 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4546 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4547 | { |
16570c12 JJ |
4548 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4549 | if (cnode->definition && !cnode->alias) | |
27d020cf | 4550 | { |
99b1c316 | 4551 | class ipa_fn_summary *info = ipa_fn_summaries->get (cnode); |
f658ad30 | 4552 | class ipa_size_summary *size_info = ipa_size_summaries->get (cnode); |
27d020cf JH |
4553 | struct bitpack_d bp; |
4554 | struct cgraph_edge *edge; | |
4555 | int i; | |
4556 | size_time_entry *e; | |
4557 | struct condition *c; | |
4558 | ||
4559 | streamer_write_uhwi (ob, lto_symtab_encoder_encode (encoder, cnode)); | |
f658ad30 JH |
4560 | streamer_write_hwi (ob, size_info->estimated_self_stack_size); |
4561 | streamer_write_hwi (ob, size_info->self_size); | |
27d020cf JH |
4562 | info->time.stream_out (ob); |
4563 | bp = bitpack_create (ob->main_stream); | |
4564 | bp_pack_value (&bp, info->inlinable, 1); | |
5e9d6aa4 | 4565 | bp_pack_value (&bp, false, 1); |
27d020cf JH |
4566 | bp_pack_value (&bp, info->fp_expressions, 1); |
4567 | streamer_write_bitpack (&bp); | |
4568 | streamer_write_uhwi (ob, vec_safe_length (info->conds)); | |
4569 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
4570 | { | |
4307a485 FX |
4571 | int j; |
4572 | struct expr_eval_op *op; | |
4573 | ||
27d020cf | 4574 | streamer_write_uhwi (ob, c->operand_num); |
27d020cf | 4575 | streamer_write_uhwi (ob, c->code); |
4307a485 | 4576 | stream_write_tree (ob, c->type, true); |
27d020cf JH |
4577 | stream_write_tree (ob, c->val, true); |
4578 | bp = bitpack_create (ob->main_stream); | |
4579 | bp_pack_value (&bp, c->agg_contents, 1); | |
4580 | bp_pack_value (&bp, c->by_ref, 1); | |
4581 | streamer_write_bitpack (&bp); | |
4582 | if (c->agg_contents) | |
4583 | streamer_write_uhwi (ob, c->offset); | |
4307a485 FX |
4584 | streamer_write_uhwi (ob, vec_safe_length (c->param_ops)); |
4585 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
4586 | { | |
4587 | streamer_write_uhwi (ob, op->code); | |
4588 | stream_write_tree (ob, op->type, true); | |
4589 | if (op->val[0]) | |
4590 | { | |
4591 | bp = bitpack_create (ob->main_stream); | |
4592 | bp_pack_value (&bp, op->index, 2); | |
4593 | streamer_write_bitpack (&bp); | |
4594 | stream_write_tree (ob, op->val[0], true); | |
4595 | if (op->val[1]) | |
4596 | stream_write_tree (ob, op->val[1], true); | |
4597 | } | |
4598 | } | |
27d020cf JH |
4599 | } |
4600 | streamer_write_uhwi (ob, vec_safe_length (info->size_time_table)); | |
4601 | for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++) | |
4602 | { | |
4603 | streamer_write_uhwi (ob, e->size); | |
4604 | e->time.stream_out (ob); | |
4605 | e->exec_predicate.stream_out (ob); | |
4606 | e->nonconst_predicate.stream_out (ob); | |
4607 | } | |
67ce9099 MJ |
4608 | ipa_freqcounting_predicate *fcp; |
4609 | streamer_write_uhwi (ob, vec_safe_length (info->loop_iterations)); | |
4610 | for (i = 0; vec_safe_iterate (info->loop_iterations, i, &fcp); i++) | |
4611 | { | |
4612 | fcp->predicate->stream_out (ob); | |
4613 | fcp->freq.stream_out (ob); | |
4614 | } | |
4615 | streamer_write_uhwi (ob, vec_safe_length (info->loop_strides)); | |
4616 | for (i = 0; vec_safe_iterate (info->loop_strides, i, &fcp); i++) | |
4617 | { | |
4618 | fcp->predicate->stream_out (ob); | |
4619 | fcp->freq.stream_out (ob); | |
4620 | } | |
27d020cf JH |
4621 | for (edge = cnode->callees; edge; edge = edge->next_callee) |
4622 | write_ipa_call_summary (ob, edge); | |
4623 | for (edge = cnode->indirect_calls; edge; edge = edge->next_callee) | |
4624 | write_ipa_call_summary (ob, edge); | |
4625 | } | |
4626 | } | |
4627 | streamer_write_char_stream (ob->main_stream, 0); | |
4628 | produce_asm (ob, NULL); | |
4629 | destroy_output_block (ob); | |
4630 | ||
29f1e2b1 | 4631 | if (!flag_ipa_cp) |
27d020cf JH |
4632 | ipa_prop_write_jump_functions (); |
4633 | } | |
4634 | ||
4635 | ||
f658ad30 | 4636 | /* Release function summary. */ |
27d020cf JH |
4637 | |
4638 | void | |
d2db2e6b | 4639 | ipa_free_fn_summary (void) |
27d020cf | 4640 | { |
27d020cf JH |
4641 | if (!ipa_call_summaries) |
4642 | return; | |
ddf628e4 | 4643 | ggc_delete (ipa_fn_summaries); |
0bceb671 | 4644 | ipa_fn_summaries = NULL; |
27d020cf JH |
4645 | delete ipa_call_summaries; |
4646 | ipa_call_summaries = NULL; | |
4647 | edge_predicate_pool.release (); | |
f658ad30 JH |
4648 | /* During IPA this is one of largest datastructures to release. */ |
4649 | if (flag_wpa) | |
4650 | ggc_trim (); | |
4651 | } | |
4652 | ||
4653 | /* Release function summary. */ | |
4654 | ||
4655 | void | |
4656 | ipa_free_size_summary (void) | |
4657 | { | |
4658 | if (!ipa_size_summaries) | |
4659 | return; | |
78cd68c0 | 4660 | delete ipa_size_summaries; |
f658ad30 | 4661 | ipa_size_summaries = NULL; |
27d020cf | 4662 | } |
d2db2e6b JH |
4663 | |
4664 | namespace { | |
4665 | ||
4666 | const pass_data pass_data_local_fn_summary = | |
4667 | { | |
4668 | GIMPLE_PASS, /* type */ | |
4669 | "local-fnsummary", /* name */ | |
4670 | OPTGROUP_INLINE, /* optinfo_flags */ | |
4671 | TV_INLINE_PARAMETERS, /* tv_id */ | |
4672 | 0, /* properties_required */ | |
4673 | 0, /* properties_provided */ | |
4674 | 0, /* properties_destroyed */ | |
4675 | 0, /* todo_flags_start */ | |
4676 | 0, /* todo_flags_finish */ | |
4677 | }; | |
4678 | ||
4679 | class pass_local_fn_summary : public gimple_opt_pass | |
4680 | { | |
4681 | public: | |
4682 | pass_local_fn_summary (gcc::context *ctxt) | |
4683 | : gimple_opt_pass (pass_data_local_fn_summary, ctxt) | |
4684 | {} | |
4685 | ||
4686 | /* opt_pass methods: */ | |
4687 | opt_pass * clone () { return new pass_local_fn_summary (m_ctxt); } | |
4688 | virtual unsigned int execute (function *) | |
4689 | { | |
4690 | return compute_fn_summary_for_current (); | |
4691 | } | |
4692 | ||
4693 | }; // class pass_local_fn_summary | |
4694 | ||
4695 | } // anon namespace | |
4696 | ||
4697 | gimple_opt_pass * | |
4698 | make_pass_local_fn_summary (gcc::context *ctxt) | |
4699 | { | |
4700 | return new pass_local_fn_summary (ctxt); | |
4701 | } | |
4702 | ||
4703 | ||
4704 | /* Free inline summary. */ | |
4705 | ||
4706 | namespace { | |
4707 | ||
4708 | const pass_data pass_data_ipa_free_fn_summary = | |
4709 | { | |
4710 | SIMPLE_IPA_PASS, /* type */ | |
4711 | "free-fnsummary", /* name */ | |
4712 | OPTGROUP_NONE, /* optinfo_flags */ | |
4713 | TV_IPA_FREE_INLINE_SUMMARY, /* tv_id */ | |
4714 | 0, /* properties_required */ | |
4715 | 0, /* properties_provided */ | |
4716 | 0, /* properties_destroyed */ | |
4717 | 0, /* todo_flags_start */ | |
442db276 | 4718 | 0, /* todo_flags_finish */ |
d2db2e6b JH |
4719 | }; |
4720 | ||
4721 | class pass_ipa_free_fn_summary : public simple_ipa_opt_pass | |
4722 | { | |
4723 | public: | |
4724 | pass_ipa_free_fn_summary (gcc::context *ctxt) | |
442db276 JJ |
4725 | : simple_ipa_opt_pass (pass_data_ipa_free_fn_summary, ctxt), |
4726 | small_p (false) | |
d2db2e6b JH |
4727 | {} |
4728 | ||
4729 | /* opt_pass methods: */ | |
442db276 JJ |
4730 | opt_pass *clone () { return new pass_ipa_free_fn_summary (m_ctxt); } |
4731 | void set_pass_param (unsigned int n, bool param) | |
4732 | { | |
4733 | gcc_assert (n == 0); | |
4734 | small_p = param; | |
4735 | } | |
f658ad30 | 4736 | virtual bool gate (function *) { return true; } |
d2db2e6b JH |
4737 | virtual unsigned int execute (function *) |
4738 | { | |
4739 | ipa_free_fn_summary (); | |
bc2fcccd JH |
4740 | /* Free ipa-prop structures if they are no longer needed. */ |
4741 | ipa_free_all_structures_after_iinln (); | |
f658ad30 JH |
4742 | if (!flag_wpa) |
4743 | ipa_free_size_summary (); | |
12485662 | 4744 | return 0; |
d2db2e6b JH |
4745 | } |
4746 | ||
442db276 JJ |
4747 | private: |
4748 | bool small_p; | |
d2db2e6b JH |
4749 | }; // class pass_ipa_free_fn_summary |
4750 | ||
4751 | } // anon namespace | |
4752 | ||
4753 | simple_ipa_opt_pass * | |
4754 | make_pass_ipa_free_fn_summary (gcc::context *ctxt) | |
4755 | { | |
4756 | return new pass_ipa_free_fn_summary (ctxt); | |
4757 | } | |
4758 | ||
4759 | namespace { | |
4760 | ||
4761 | const pass_data pass_data_ipa_fn_summary = | |
4762 | { | |
4763 | IPA_PASS, /* type */ | |
4764 | "fnsummary", /* name */ | |
4765 | OPTGROUP_INLINE, /* optinfo_flags */ | |
66447ef0 | 4766 | TV_IPA_FNSUMMARY, /* tv_id */ |
d2db2e6b JH |
4767 | 0, /* properties_required */ |
4768 | 0, /* properties_provided */ | |
4769 | 0, /* properties_destroyed */ | |
4770 | 0, /* todo_flags_start */ | |
4771 | ( TODO_dump_symtab ), /* todo_flags_finish */ | |
4772 | }; | |
4773 | ||
4774 | class pass_ipa_fn_summary : public ipa_opt_pass_d | |
4775 | { | |
4776 | public: | |
4777 | pass_ipa_fn_summary (gcc::context *ctxt) | |
4778 | : ipa_opt_pass_d (pass_data_ipa_fn_summary, ctxt, | |
4779 | ipa_fn_summary_generate, /* generate_summary */ | |
4780 | ipa_fn_summary_write, /* write_summary */ | |
4781 | ipa_fn_summary_read, /* read_summary */ | |
4782 | NULL, /* write_optimization_summary */ | |
4783 | NULL, /* read_optimization_summary */ | |
4784 | NULL, /* stmt_fixup */ | |
4785 | 0, /* function_transform_todo_flags_start */ | |
4786 | NULL, /* function_transform */ | |
4787 | NULL) /* variable_transform */ | |
4788 | {} | |
4789 | ||
4790 | /* opt_pass methods: */ | |
4791 | virtual unsigned int execute (function *) { return 0; } | |
4792 | ||
4793 | }; // class pass_ipa_fn_summary | |
4794 | ||
4795 | } // anon namespace | |
4796 | ||
4797 | ipa_opt_pass_d * | |
4798 | make_pass_ipa_fn_summary (gcc::context *ctxt) | |
4799 | { | |
4800 | return new pass_ipa_fn_summary (ctxt); | |
4801 | } | |
de4381a4 DM |
4802 | |
4803 | /* Reset all state within ipa-fnsummary.c so that we can rerun the compiler | |
4804 | within the same process. For use by toplev::finalize. */ | |
4805 | ||
4806 | void | |
4807 | ipa_fnsummary_c_finalize (void) | |
4808 | { | |
4809 | ipa_free_fn_summary (); | |
4810 | } |