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27d020cf | 1 | /* Function summary pass. |
a945c346 | 2 | Copyright (C) 2003-2024 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" | |
0fc60c18 | 59 | #include "target.h" |
27d020cf JH |
60 | #include "tree.h" |
61 | #include "gimple.h" | |
62 | #include "alloc-pool.h" | |
63 | #include "tree-pass.h" | |
64 | #include "ssa.h" | |
65 | #include "tree-streamer.h" | |
66 | #include "cgraph.h" | |
67 | #include "diagnostic.h" | |
68 | #include "fold-const.h" | |
69 | #include "print-tree.h" | |
70 | #include "tree-inline.h" | |
71 | #include "gimple-pretty-print.h" | |
27d020cf JH |
72 | #include "cfganal.h" |
73 | #include "gimple-iterator.h" | |
74 | #include "tree-cfg.h" | |
75 | #include "tree-ssa-loop-niter.h" | |
76 | #include "tree-ssa-loop.h" | |
77 | #include "symbol-summary.h" | |
78 | #include "ipa-prop.h" | |
79 | #include "ipa-fnsummary.h" | |
80 | #include "cfgloop.h" | |
81 | #include "tree-scalar-evolution.h" | |
82 | #include "ipa-utils.h" | |
27d020cf JH |
83 | #include "cfgexpand.h" |
84 | #include "gimplify.h" | |
314e6352 ML |
85 | #include "stringpool.h" |
86 | #include "attribs.h" | |
ac0573de | 87 | #include "tree-into-ssa.h" |
ae7a23a3 | 88 | #include "symtab-clones.h" |
45f4e2b0 | 89 | #include "gimple-range.h" |
ca84f393 | 90 | #include "tree-dfa.h" |
27d020cf JH |
91 | |
92 | /* Summaries. */ | |
db30281f | 93 | fast_function_summary <ipa_fn_summary *, va_gc> *ipa_fn_summaries; |
f658ad30 | 94 | fast_function_summary <ipa_size_summary *, va_heap> *ipa_size_summaries; |
db30281f | 95 | fast_call_summary <ipa_call_summary *, va_heap> *ipa_call_summaries; |
27d020cf JH |
96 | |
97 | /* Edge predicates goes here. */ | |
2d01bef2 | 98 | static object_allocator<ipa_predicate> edge_predicate_pool ("edge predicates"); |
27d020cf JH |
99 | |
100 | ||
0bceb671 | 101 | /* Dump IPA hints. */ |
27d020cf | 102 | void |
0bceb671 | 103 | ipa_dump_hints (FILE *f, ipa_hints hints) |
27d020cf JH |
104 | { |
105 | if (!hints) | |
106 | return; | |
0bceb671 | 107 | fprintf (f, "IPA hints:"); |
27d020cf JH |
108 | if (hints & INLINE_HINT_indirect_call) |
109 | { | |
110 | hints &= ~INLINE_HINT_indirect_call; | |
111 | fprintf (f, " indirect_call"); | |
112 | } | |
113 | if (hints & INLINE_HINT_loop_iterations) | |
114 | { | |
115 | hints &= ~INLINE_HINT_loop_iterations; | |
116 | fprintf (f, " loop_iterations"); | |
117 | } | |
118 | if (hints & INLINE_HINT_loop_stride) | |
119 | { | |
120 | hints &= ~INLINE_HINT_loop_stride; | |
121 | fprintf (f, " loop_stride"); | |
122 | } | |
123 | if (hints & INLINE_HINT_same_scc) | |
124 | { | |
125 | hints &= ~INLINE_HINT_same_scc; | |
126 | fprintf (f, " same_scc"); | |
127 | } | |
128 | if (hints & INLINE_HINT_in_scc) | |
129 | { | |
130 | hints &= ~INLINE_HINT_in_scc; | |
131 | fprintf (f, " in_scc"); | |
132 | } | |
133 | if (hints & INLINE_HINT_cross_module) | |
134 | { | |
135 | hints &= ~INLINE_HINT_cross_module; | |
136 | fprintf (f, " cross_module"); | |
137 | } | |
138 | if (hints & INLINE_HINT_declared_inline) | |
139 | { | |
140 | hints &= ~INLINE_HINT_declared_inline; | |
141 | fprintf (f, " declared_inline"); | |
142 | } | |
27d020cf JH |
143 | if (hints & INLINE_HINT_known_hot) |
144 | { | |
145 | hints &= ~INLINE_HINT_known_hot; | |
146 | fprintf (f, " known_hot"); | |
147 | } | |
caaa218f JH |
148 | if (hints & INLINE_HINT_builtin_constant_p) |
149 | { | |
150 | hints &= ~INLINE_HINT_builtin_constant_p; | |
151 | fprintf (f, " builtin_constant_p"); | |
152 | } | |
27d020cf JH |
153 | gcc_assert (!hints); |
154 | } | |
155 | ||
156 | ||
157 | /* Record SIZE and TIME to SUMMARY. | |
158 | The accounted code will be executed when EXEC_PRED is true. | |
956d615d | 159 | When NONCONST_PRED is false the code will evaluate to constant and |
070e3489 JH |
160 | will get optimized out in specialized clones of the function. |
161 | If CALL is true account to call_size_time_table rather than | |
162 | size_time_table. */ | |
27d020cf JH |
163 | |
164 | void | |
0bceb671 | 165 | ipa_fn_summary::account_size_time (int size, sreal time, |
2d01bef2 ML |
166 | const ipa_predicate &exec_pred, |
167 | const ipa_predicate &nonconst_pred_in, | |
070e3489 | 168 | bool call) |
27d020cf JH |
169 | { |
170 | size_time_entry *e; | |
171 | bool found = false; | |
172 | int i; | |
2d01bef2 | 173 | ipa_predicate nonconst_pred; |
366099ff | 174 | vec<size_time_entry> *table = call ? &call_size_time_table : &size_time_table; |
27d020cf JH |
175 | |
176 | if (exec_pred == false) | |
177 | return; | |
178 | ||
179 | nonconst_pred = nonconst_pred_in & exec_pred; | |
180 | ||
181 | if (nonconst_pred == false) | |
182 | return; | |
183 | ||
956d615d | 184 | /* We need to create initial empty unconditional clause, but otherwise |
27d020cf | 185 | we don't need to account empty times and sizes. */ |
366099ff | 186 | if (!size && time == 0 && table->length ()) |
27d020cf JH |
187 | return; |
188 | ||
956d615d | 189 | /* Only for calls we are unaccounting what we previously recorded. */ |
d2bcf46c | 190 | gcc_checking_assert (time >= 0 || call); |
27d020cf | 191 | |
366099ff | 192 | for (i = 0; table->iterate (i, &e); i++) |
27d020cf JH |
193 | if (e->exec_predicate == exec_pred |
194 | && e->nonconst_predicate == nonconst_pred) | |
195 | { | |
196 | found = true; | |
197 | break; | |
198 | } | |
070e3489 | 199 | if (i == max_size_time_table_size) |
27d020cf JH |
200 | { |
201 | i = 0; | |
202 | found = true; | |
070e3489 | 203 | e = &(*table)[0]; |
27d020cf JH |
204 | if (dump_file && (dump_flags & TDF_DETAILS)) |
205 | fprintf (dump_file, | |
206 | "\t\tReached limit on number of entries, " | |
207 | "ignoring the predicate."); | |
208 | } | |
209 | if (dump_file && (dump_flags & TDF_DETAILS) && (time != 0 || size)) | |
210 | { | |
211 | fprintf (dump_file, | |
212 | "\t\tAccounting size:%3.2f, time:%3.2f on %spredicate exec:", | |
0bceb671 | 213 | ((double) size) / ipa_fn_summary::size_scale, |
27d020cf JH |
214 | (time.to_double ()), found ? "" : "new "); |
215 | exec_pred.dump (dump_file, conds, 0); | |
216 | if (exec_pred != nonconst_pred) | |
217 | { | |
218 | fprintf (dump_file, " nonconst:"); | |
219 | nonconst_pred.dump (dump_file, conds); | |
220 | } | |
221 | else | |
222 | fprintf (dump_file, "\n"); | |
223 | } | |
224 | if (!found) | |
225 | { | |
99b1c316 | 226 | class size_time_entry new_entry; |
27d020cf JH |
227 | new_entry.size = size; |
228 | new_entry.time = time; | |
229 | new_entry.exec_predicate = exec_pred; | |
230 | new_entry.nonconst_predicate = nonconst_pred; | |
070e3489 | 231 | if (call) |
366099ff | 232 | call_size_time_table.safe_push (new_entry); |
070e3489 | 233 | else |
366099ff | 234 | size_time_table.safe_push (new_entry); |
27d020cf JH |
235 | } |
236 | else | |
237 | { | |
238 | e->size += size; | |
239 | e->time += time; | |
dd86c8da | 240 | /* FIXME: PR bootstrap/92653 gcc_checking_assert (e->time >= -1); */ |
d2bcf46c JH |
241 | /* Tolerate small roundoff issues. */ |
242 | if (e->time < 0) | |
243 | e->time = 0; | |
27d020cf JH |
244 | } |
245 | } | |
246 | ||
956d615d | 247 | /* We proved E to be unreachable, redirect it to __builtin_unreachable. */ |
27d020cf JH |
248 | |
249 | static struct cgraph_edge * | |
250 | redirect_to_unreachable (struct cgraph_edge *e) | |
251 | { | |
252 | struct cgraph_node *callee = !e->inline_failed ? e->callee : NULL; | |
d68d3664 JM |
253 | struct cgraph_node *target |
254 | = cgraph_node::get_create (builtin_decl_unreachable ()); | |
27d020cf JH |
255 | |
256 | if (e->speculative) | |
27c5a177 | 257 | e = cgraph_edge::resolve_speculation (e, target->decl); |
27d020cf | 258 | else if (!e->callee) |
27c5a177 | 259 | e = cgraph_edge::make_direct (e, target); |
27d020cf JH |
260 | else |
261 | e->redirect_callee (target); | |
99b1c316 | 262 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf | 263 | e->inline_failed = CIF_UNREACHABLE; |
3995f3a2 | 264 | e->count = profile_count::zero (); |
27d020cf JH |
265 | es->call_stmt_size = 0; |
266 | es->call_stmt_time = 0; | |
267 | if (callee) | |
268 | callee->remove_symbol_and_inline_clones (); | |
269 | return e; | |
270 | } | |
271 | ||
272 | /* Set predicate for edge E. */ | |
273 | ||
274 | static void | |
2d01bef2 | 275 | edge_set_predicate (struct cgraph_edge *e, ipa_predicate *predicate) |
27d020cf JH |
276 | { |
277 | /* If the edge is determined to be never executed, redirect it | |
0bceb671 JH |
278 | to BUILTIN_UNREACHABLE to make it clear to IPA passes the call will |
279 | be optimized out. */ | |
27d020cf JH |
280 | if (predicate && *predicate == false |
281 | /* When handling speculative edges, we need to do the redirection | |
282 | just once. Do it always on the direct edge, so we do not | |
283 | attempt to resolve speculation while duplicating the edge. */ | |
284 | && (!e->speculative || e->callee)) | |
285 | e = redirect_to_unreachable (e); | |
286 | ||
99b1c316 | 287 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
288 | if (predicate && *predicate != true) |
289 | { | |
290 | if (!es->predicate) | |
291 | es->predicate = edge_predicate_pool.allocate (); | |
292 | *es->predicate = *predicate; | |
293 | } | |
294 | else | |
295 | { | |
296 | if (es->predicate) | |
297 | edge_predicate_pool.remove (es->predicate); | |
298 | es->predicate = NULL; | |
299 | } | |
300 | } | |
301 | ||
302 | /* Set predicate for hint *P. */ | |
303 | ||
304 | static void | |
2d01bef2 | 305 | set_hint_predicate (ipa_predicate **p, ipa_predicate new_predicate) |
27d020cf JH |
306 | { |
307 | if (new_predicate == false || new_predicate == true) | |
308 | { | |
309 | if (*p) | |
310 | edge_predicate_pool.remove (*p); | |
311 | *p = NULL; | |
312 | } | |
313 | else | |
314 | { | |
315 | if (!*p) | |
316 | *p = edge_predicate_pool.allocate (); | |
317 | **p = new_predicate; | |
318 | } | |
319 | } | |
320 | ||
67ce9099 MJ |
321 | /* Find if NEW_PREDICATE is already in V and if so, increment its freq. |
322 | Otherwise add a new item to the vector with this predicate and frerq equal | |
323 | to add_freq, unless the number of predicates would exceed MAX_NUM_PREDICATES | |
324 | in which case the function does nothing. */ | |
325 | ||
326 | static void | |
327 | add_freqcounting_predicate (vec<ipa_freqcounting_predicate, va_gc> **v, | |
2d01bef2 | 328 | const ipa_predicate &new_predicate, sreal add_freq, |
67ce9099 MJ |
329 | unsigned max_num_predicates) |
330 | { | |
331 | if (new_predicate == false || new_predicate == true) | |
332 | return; | |
333 | ipa_freqcounting_predicate *f; | |
334 | for (int i = 0; vec_safe_iterate (*v, i, &f); i++) | |
335 | if (new_predicate == f->predicate) | |
336 | { | |
337 | f->freq += add_freq; | |
338 | return; | |
339 | } | |
340 | if (vec_safe_length (*v) >= max_num_predicates) | |
341 | /* Too many different predicates to account for. */ | |
342 | return; | |
343 | ||
344 | ipa_freqcounting_predicate fcp; | |
345 | fcp.predicate = NULL; | |
346 | set_hint_predicate (&fcp.predicate, new_predicate); | |
347 | fcp.freq = add_freq; | |
348 | vec_safe_push (*v, fcp); | |
349 | return; | |
350 | } | |
27d020cf | 351 | |
956d615d | 352 | /* Compute what conditions may or may not hold given information about |
27d020cf | 353 | parameters. RET_CLAUSE returns truths that may hold in a specialized copy, |
956d615d | 354 | while RET_NONSPEC_CLAUSE returns truths that may hold in an nonspecialized |
27d020cf JH |
355 | copy when called in a given context. It is a bitmask of conditions. Bit |
356 | 0 means that condition is known to be false, while bit 1 means that condition | |
357 | may or may not be true. These differs - for example NOT_INLINED condition | |
67914693 | 358 | is always false in the second and also builtin_constant_p tests cannot use |
27d020cf JH |
359 | the fact that parameter is indeed a constant. |
360 | ||
9d5af1db MJ |
361 | When INLINE_P is true, assume that we are inlining. AVAL contains known |
362 | information about argument values. The function does not modify its content | |
363 | and so AVALs could also be of type ipa_call_arg_values but so far all | |
364 | callers work with the auto version and so we avoid the conversion for | |
365 | convenience. | |
27d020cf | 366 | |
9d5af1db | 367 | ERROR_MARK value of an argument means compile time invariant. */ |
27d020cf JH |
368 | |
369 | static void | |
370 | evaluate_conditions_for_known_args (struct cgraph_node *node, | |
371 | bool inline_p, | |
9d5af1db | 372 | ipa_auto_call_arg_values *avals, |
27d020cf | 373 | clause_t *ret_clause, |
5a1ef1cf H |
374 | clause_t *ret_nonspec_clause, |
375 | ipa_call_summary *es) | |
27d020cf | 376 | { |
2d01bef2 ML |
377 | clause_t clause = inline_p ? 0 : 1 << ipa_predicate::not_inlined_condition; |
378 | clause_t nonspec_clause = 1 << ipa_predicate::not_inlined_condition; | |
99b1c316 | 379 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
27d020cf JH |
380 | int i; |
381 | struct condition *c; | |
382 | ||
383 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
384 | { | |
b0d55476 | 385 | tree val = NULL; |
27d020cf | 386 | tree res; |
4307a485 FX |
387 | int j; |
388 | struct expr_eval_op *op; | |
27d020cf | 389 | |
5a1ef1cf H |
390 | if (c->code == ipa_predicate::not_sra_candidate) |
391 | { | |
392 | if (!inline_p | |
393 | || !es | |
394 | || (int)es->param.length () <= c->operand_num | |
395 | || !es->param[c->operand_num].points_to_possible_sra_candidate) | |
396 | clause |= 1 << (i + ipa_predicate::first_dynamic_condition); | |
397 | nonspec_clause |= 1 << (i + ipa_predicate::first_dynamic_condition); | |
398 | continue; | |
399 | } | |
400 | ||
27d020cf JH |
401 | if (c->agg_contents) |
402 | { | |
2d01bef2 | 403 | if (c->code == ipa_predicate::changed |
27d020cf | 404 | && !c->by_ref |
9d5af1db | 405 | && (avals->safe_sval_at(c->operand_num) == error_mark_node)) |
27d020cf JH |
406 | continue; |
407 | ||
656b2338 MJ |
408 | if (tree sval = avals->safe_sval_at (c->operand_num)) |
409 | val = ipa_find_agg_cst_from_init (sval, c->offset, c->by_ref); | |
410 | if (!val) | |
27d020cf | 411 | { |
656b2338 MJ |
412 | ipa_argagg_value_list avs (avals); |
413 | val = avs.get_value (c->operand_num, c->offset / BITS_PER_UNIT, | |
414 | c->by_ref); | |
27d020cf | 415 | } |
27d020cf | 416 | } |
9d5af1db | 417 | else |
27d020cf | 418 | { |
9d5af1db | 419 | val = avals->safe_sval_at (c->operand_num); |
2d01bef2 ML |
420 | if (val && val == error_mark_node |
421 | && c->code != ipa_predicate::changed) | |
27d020cf JH |
422 | val = NULL_TREE; |
423 | } | |
424 | ||
68718e8e | 425 | if (!val |
2d01bef2 ML |
426 | && (c->code == ipa_predicate::changed |
427 | || c->code == ipa_predicate::is_not_constant)) | |
27d020cf | 428 | { |
2d01bef2 ML |
429 | clause |= 1 << (i + ipa_predicate::first_dynamic_condition); |
430 | nonspec_clause |= 1 << (i + ipa_predicate::first_dynamic_condition); | |
27d020cf JH |
431 | continue; |
432 | } | |
2d01bef2 | 433 | if (c->code == ipa_predicate::changed) |
27d020cf | 434 | { |
2d01bef2 | 435 | nonspec_clause |= 1 << (i + ipa_predicate::first_dynamic_condition); |
27d020cf JH |
436 | continue; |
437 | } | |
438 | ||
2d01bef2 | 439 | if (c->code == ipa_predicate::is_not_constant) |
27d020cf | 440 | { |
2d01bef2 | 441 | nonspec_clause |= 1 << (i + ipa_predicate::first_dynamic_condition); |
27d020cf JH |
442 | continue; |
443 | } | |
444 | ||
68718e8e | 445 | if (val && TYPE_SIZE (c->type) == TYPE_SIZE (TREE_TYPE (val))) |
4307a485 | 446 | { |
68718e8e JH |
447 | if (c->type != TREE_TYPE (val)) |
448 | val = fold_unary (VIEW_CONVERT_EXPR, c->type, val); | |
449 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
450 | { | |
451 | if (!val) | |
452 | break; | |
453 | if (!op->val[0]) | |
454 | val = fold_unary (op->code, op->type, val); | |
455 | else if (!op->val[1]) | |
456 | val = fold_binary (op->code, op->type, | |
457 | op->index ? op->val[0] : val, | |
458 | op->index ? val : op->val[0]); | |
459 | else if (op->index == 0) | |
460 | val = fold_ternary (op->code, op->type, | |
461 | val, op->val[0], op->val[1]); | |
462 | else if (op->index == 1) | |
463 | val = fold_ternary (op->code, op->type, | |
464 | op->val[0], val, op->val[1]); | |
465 | else if (op->index == 2) | |
466 | val = fold_ternary (op->code, op->type, | |
467 | op->val[0], op->val[1], val); | |
468 | else | |
469 | val = NULL_TREE; | |
470 | } | |
471 | ||
472 | res = val | |
473 | ? fold_binary_to_constant (c->code, boolean_type_node, val, c->val) | |
474 | : NULL; | |
475 | ||
476 | if (res && integer_zerop (res)) | |
477 | continue; | |
478 | if (res && integer_onep (res)) | |
479 | { | |
2d01bef2 ML |
480 | clause |= 1 << (i + ipa_predicate::first_dynamic_condition); |
481 | nonspec_clause | |
482 | |= 1 << (i + ipa_predicate::first_dynamic_condition); | |
68718e8e JH |
483 | continue; |
484 | } | |
4307a485 | 485 | } |
9d5af1db | 486 | if (c->operand_num < (int) avals->m_known_value_ranges.length () |
68718e8e | 487 | && !c->agg_contents |
68718e8e JH |
488 | && (!val || TREE_CODE (val) != INTEGER_CST)) |
489 | { | |
bc5a2c2e | 490 | Value_Range vr (avals->m_known_value_ranges[c->operand_num]); |
9d5af1db MJ |
491 | if (!vr.undefined_p () |
492 | && !vr.varying_p () | |
493 | && (TYPE_SIZE (c->type) == TYPE_SIZE (vr.type ()))) | |
68718e8e | 494 | { |
9d5af1db | 495 | if (!useless_type_conversion_p (c->type, vr.type ())) |
3c9372df | 496 | range_cast (vr, c->type); |
4307a485 | 497 | |
9d5af1db MJ |
498 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) |
499 | { | |
500 | if (vr.varying_p () || vr.undefined_p ()) | |
501 | break; | |
27d020cf | 502 | |
3c52dff7 | 503 | Value_Range res (op->type); |
9d5af1db | 504 | if (!op->val[0]) |
3c9372df | 505 | { |
3c52dff7 AH |
506 | Value_Range varying (op->type); |
507 | varying.set_varying (op->type); | |
2eb50117 | 508 | range_op_handler handler (op->code); |
3c9372df AH |
509 | if (!handler |
510 | || !res.supports_type_p (op->type) | |
3c52dff7 | 511 | || !handler.fold_range (res, op->type, vr, varying)) |
3c9372df AH |
512 | res.set_varying (op->type); |
513 | } | |
9d5af1db MJ |
514 | else if (!op->val[1]) |
515 | { | |
3c52dff7 | 516 | Value_Range op0 (op->type); |
2eb50117 | 517 | range_op_handler handler (op->code); |
3c9372df | 518 | |
2b8ac1df AH |
519 | ipa_range_set_and_normalize (op0, op->val[0]); |
520 | ||
3c9372df AH |
521 | if (!handler |
522 | || !res.supports_type_p (op->type) | |
523 | || !handler.fold_range (res, op->type, | |
524 | op->index ? op0 : vr, | |
525 | op->index ? vr : op0)) | |
526 | res.set_varying (op->type); | |
9d5af1db MJ |
527 | } |
528 | else | |
3b61f06b | 529 | res.set_varying (op->type); |
9d5af1db MJ |
530 | vr = res; |
531 | } | |
532 | if (!vr.varying_p () && !vr.undefined_p ()) | |
68718e8e | 533 | { |
3c52dff7 AH |
534 | int_range<2> res; |
535 | Value_Range val_vr (TREE_TYPE (c->val)); | |
2eb50117 | 536 | range_op_handler handler (c->code); |
3c9372df | 537 | |
2b8ac1df AH |
538 | ipa_range_set_and_normalize (val_vr, c->val); |
539 | ||
3c9372df | 540 | if (!handler |
3c52dff7 | 541 | || !val_vr.supports_type_p (TREE_TYPE (c->val)) |
3c9372df AH |
542 | || !handler.fold_range (res, boolean_type_node, vr, val_vr)) |
543 | res.set_varying (boolean_type_node); | |
544 | ||
9d5af1db MJ |
545 | if (res.zero_p ()) |
546 | continue; | |
68718e8e | 547 | } |
68718e8e JH |
548 | } |
549 | } | |
27d020cf | 550 | |
2d01bef2 ML |
551 | clause |= 1 << (i + ipa_predicate::first_dynamic_condition); |
552 | nonspec_clause |= 1 << (i + ipa_predicate::first_dynamic_condition); | |
27d020cf JH |
553 | } |
554 | *ret_clause = clause; | |
555 | if (ret_nonspec_clause) | |
556 | *ret_nonspec_clause = nonspec_clause; | |
557 | } | |
558 | ||
2523d721 JH |
559 | /* Return true if VRP will be exectued on the function. |
560 | We do not want to anticipate optimizations that will not happen. | |
561 | ||
562 | FIXME: This can be confused with -fdisable and debug counters and thus | |
563 | it should not be used for correctness (only to make heuristics work). | |
564 | This means that inliner should do its own optimizations of expressions | |
565 | that it predicts to be constant so wrong code can not be triggered by | |
566 | builtin_constant_p. */ | |
567 | ||
568 | static bool | |
569 | vrp_will_run_p (struct cgraph_node *node) | |
570 | { | |
571 | return (opt_for_fn (node->decl, optimize) | |
572 | && !opt_for_fn (node->decl, optimize_debug) | |
573 | && opt_for_fn (node->decl, flag_tree_vrp)); | |
574 | } | |
575 | ||
576 | /* Similarly about FRE. */ | |
577 | ||
578 | static bool | |
579 | fre_will_run_p (struct cgraph_node *node) | |
580 | { | |
581 | return (opt_for_fn (node->decl, optimize) | |
582 | && !opt_for_fn (node->decl, optimize_debug) | |
583 | && opt_for_fn (node->decl, flag_tree_fre)); | |
584 | } | |
27d020cf | 585 | |
b0d55476 JH |
586 | /* Work out what conditions might be true at invocation of E. |
587 | Compute costs for inlined edge if INLINE_P is true. | |
588 | ||
956d615d | 589 | Return in CLAUSE_PTR the evaluated conditions and in NONSPEC_CLAUSE_PTR |
b0d55476 JH |
590 | (if non-NULL) conditions evaluated for nonspecialized clone called |
591 | in a given context. | |
592 | ||
9d5af1db MJ |
593 | Vectors in AVALS will be populated with useful known information about |
594 | argument values - information not known to have any uses will be omitted - | |
595 | except for m_known_contexts which will only be calculated if | |
596 | COMPUTE_CONTEXTS is true. */ | |
27d020cf JH |
597 | |
598 | void | |
599 | evaluate_properties_for_edge (struct cgraph_edge *e, bool inline_p, | |
600 | clause_t *clause_ptr, | |
601 | clause_t *nonspec_clause_ptr, | |
9d5af1db MJ |
602 | ipa_auto_call_arg_values *avals, |
603 | bool compute_contexts) | |
27d020cf JH |
604 | { |
605 | struct cgraph_node *callee = e->callee->ultimate_alias_target (); | |
99b1c316 | 606 | class ipa_fn_summary *info = ipa_fn_summaries->get (callee); |
a33c028e | 607 | class ipa_edge_args *args; |
5a1ef1cf | 608 | class ipa_call_summary *es = NULL; |
27d020cf JH |
609 | |
610 | if (clause_ptr) | |
2d01bef2 | 611 | *clause_ptr = inline_p ? 0 : 1 << ipa_predicate::not_inlined_condition; |
27d020cf JH |
612 | |
613 | if (ipa_node_params_sum | |
614 | && !e->call_stmt_cannot_inline_p | |
9d5af1db | 615 | && (info->conds || compute_contexts) |
a4a3cdd0 | 616 | && (args = ipa_edge_args_sum->get (e)) != NULL) |
27d020cf | 617 | { |
eb270950 | 618 | struct cgraph_node *caller; |
b0d55476 | 619 | class ipa_node_params *caller_parms_info, *callee_pi = NULL; |
27d020cf | 620 | int i, count = ipa_get_cs_argument_count (args); |
5a1ef1cf | 621 | es = ipa_call_summaries->get (e); |
27d020cf | 622 | |
b0d55476 JH |
623 | if (count) |
624 | { | |
625 | if (e->caller->inlined_to) | |
626 | caller = e->caller->inlined_to; | |
627 | else | |
628 | caller = e->caller; | |
a4a3cdd0 MJ |
629 | caller_parms_info = ipa_node_params_sum->get (caller); |
630 | callee_pi = ipa_node_params_sum->get (callee); | |
b0d55476 JH |
631 | |
632 | /* Watch for thunks. */ | |
633 | if (callee_pi) | |
634 | /* Watch for variadic functions. */ | |
635 | count = MIN (count, ipa_get_param_count (callee_pi)); | |
636 | } | |
27d020cf | 637 | |
6cf67b62 JH |
638 | if (callee_pi) |
639 | for (i = 0; i < count; i++) | |
640 | { | |
641 | struct ipa_jump_func *jf = ipa_get_ith_jump_func (args, i); | |
6cf67b62 | 642 | |
b0d55476 JH |
643 | if (ipa_is_param_used_by_indirect_call (callee_pi, i) |
644 | || ipa_is_param_used_by_ipa_predicates (callee_pi, i)) | |
6cf67b62 | 645 | { |
b0d55476 | 646 | /* Determine if we know constant value of the parameter. */ |
bc5a2c2e AH |
647 | tree type = ipa_get_type (callee_pi, i); |
648 | tree cst = ipa_value_from_jfunc (caller_parms_info, jf, type); | |
b0d55476 JH |
649 | |
650 | if (!cst && e->call_stmt | |
651 | && i < (int)gimple_call_num_args (e->call_stmt)) | |
652 | { | |
653 | cst = gimple_call_arg (e->call_stmt, i); | |
654 | if (!is_gimple_min_invariant (cst)) | |
655 | cst = NULL; | |
656 | } | |
657 | if (cst) | |
658 | { | |
659 | gcc_checking_assert (TREE_CODE (cst) != TREE_BINFO); | |
9d5af1db MJ |
660 | if (!avals->m_known_vals.length ()) |
661 | avals->m_known_vals.safe_grow_cleared (count, true); | |
662 | avals->m_known_vals[i] = cst; | |
b0d55476 JH |
663 | } |
664 | else if (inline_p && !es->param[i].change_prob) | |
665 | { | |
9d5af1db MJ |
666 | if (!avals->m_known_vals.length ()) |
667 | avals->m_known_vals.safe_grow_cleared (count, true); | |
668 | avals->m_known_vals[i] = error_mark_node; | |
b0d55476 JH |
669 | } |
670 | ||
671 | /* If we failed to get simple constant, try value range. */ | |
672 | if ((!cst || TREE_CODE (cst) != INTEGER_CST) | |
2523d721 | 673 | && vrp_will_run_p (caller) |
b0d55476 JH |
674 | && ipa_is_param_used_by_ipa_predicates (callee_pi, i)) |
675 | { | |
bc5a2c2e AH |
676 | Value_Range vr (type); |
677 | ||
678 | ipa_value_range_from_jfunc (vr, caller_parms_info, e, jf, type); | |
b0d55476 JH |
679 | if (!vr.undefined_p () && !vr.varying_p ()) |
680 | { | |
9d5af1db | 681 | if (!avals->m_known_value_ranges.length ()) |
73cd319b JJ |
682 | avals->m_known_value_ranges.safe_grow_cleared (count, |
683 | true); | |
9d5af1db | 684 | avals->m_known_value_ranges[i] = vr; |
b0d55476 JH |
685 | } |
686 | } | |
687 | ||
688 | /* Determine known aggregate values. */ | |
21e28527 | 689 | if (fre_will_run_p (caller)) |
656b2338 MJ |
690 | ipa_push_agg_values_from_jfunc (caller_parms_info, |
691 | caller, &jf->agg, i, | |
692 | &avals->m_known_aggs); | |
6cf67b62 | 693 | } |
b0d55476 JH |
694 | |
695 | /* For calls used in polymorphic calls we further determine | |
696 | polymorphic call context. */ | |
9d5af1db | 697 | if (compute_contexts |
b0d55476 | 698 | && ipa_is_param_used_by_polymorphic_call (callee_pi, i)) |
6cf67b62 | 699 | { |
b0d55476 JH |
700 | ipa_polymorphic_call_context |
701 | ctx = ipa_context_from_jfunc (caller_parms_info, e, i, jf); | |
702 | if (!ctx.useless_p ()) | |
703 | { | |
9d5af1db MJ |
704 | if (!avals->m_known_contexts.length ()) |
705 | avals->m_known_contexts.safe_grow_cleared (count, true); | |
706 | avals->m_known_contexts[i] | |
b0d55476 JH |
707 | = ipa_context_from_jfunc (caller_parms_info, e, i, jf); |
708 | } | |
709 | } | |
6cf67b62 JH |
710 | } |
711 | else | |
67f3791f | 712 | gcc_assert (!count || callee->thunk); |
27d020cf | 713 | } |
b0d55476 | 714 | else if (e->call_stmt && !e->call_stmt_cannot_inline_p && info->conds) |
27d020cf JH |
715 | { |
716 | int i, count = (int)gimple_call_num_args (e->call_stmt); | |
717 | ||
27d020cf JH |
718 | for (i = 0; i < count; i++) |
719 | { | |
720 | tree cst = gimple_call_arg (e->call_stmt, i); | |
721 | if (!is_gimple_min_invariant (cst)) | |
722 | cst = NULL; | |
723 | if (cst) | |
b0d55476 | 724 | { |
9d5af1db MJ |
725 | if (!avals->m_known_vals.length ()) |
726 | avals->m_known_vals.safe_grow_cleared (count, true); | |
727 | avals->m_known_vals[i] = cst; | |
b0d55476 | 728 | } |
27d020cf JH |
729 | } |
730 | } | |
731 | ||
9d5af1db | 732 | evaluate_conditions_for_known_args (callee, inline_p, avals, clause_ptr, |
5a1ef1cf | 733 | nonspec_clause_ptr, es); |
27d020cf JH |
734 | } |
735 | ||
736 | ||
0bceb671 | 737 | /* Allocate the function summary. */ |
27d020cf JH |
738 | |
739 | static void | |
0bceb671 | 740 | ipa_fn_summary_alloc (void) |
27d020cf | 741 | { |
0bceb671 | 742 | gcc_checking_assert (!ipa_fn_summaries); |
44fca832 | 743 | ipa_size_summaries = new ipa_size_summary_t (symtab); |
7237f93e | 744 | ipa_fn_summaries = ipa_fn_summary_t::create_ggc (symtab); |
db30281f | 745 | ipa_call_summaries = new ipa_call_summary_t (symtab); |
27d020cf JH |
746 | } |
747 | ||
56f62793 | 748 | ipa_call_summary::~ipa_call_summary () |
27d020cf | 749 | { |
27d020cf JH |
750 | if (predicate) |
751 | edge_predicate_pool.remove (predicate); | |
56f62793 | 752 | |
27d020cf JH |
753 | param.release (); |
754 | } | |
755 | ||
56f62793 | 756 | ipa_fn_summary::~ipa_fn_summary () |
27d020cf | 757 | { |
67ce9099 MJ |
758 | unsigned len = vec_safe_length (loop_iterations); |
759 | for (unsigned i = 0; i < len; i++) | |
760 | edge_predicate_pool.remove ((*loop_iterations)[i].predicate); | |
761 | len = vec_safe_length (loop_strides); | |
762 | for (unsigned i = 0; i < len; i++) | |
763 | edge_predicate_pool.remove ((*loop_strides)[i].predicate); | |
27d020cf | 764 | vec_free (conds); |
366099ff | 765 | call_size_time_table.release (); |
67ce9099 MJ |
766 | vec_free (loop_iterations); |
767 | vec_free (loop_strides); | |
caaa218f | 768 | builtin_constant_p_parms.release (); |
27d020cf JH |
769 | } |
770 | ||
27d020cf | 771 | void |
56f62793 | 772 | ipa_fn_summary_t::remove_callees (cgraph_node *node) |
27d020cf | 773 | { |
56f62793 ML |
774 | cgraph_edge *e; |
775 | for (e = node->callees; e; e = e->next_callee) | |
776 | ipa_call_summaries->remove (e); | |
777 | for (e = node->indirect_calls; e; e = e->next_callee) | |
778 | ipa_call_summaries->remove (e); | |
27d020cf JH |
779 | } |
780 | ||
67ce9099 MJ |
781 | /* Duplicate predicates in loop hint vector, allocating memory for them and |
782 | remove and deallocate any uninteresting (true or false) ones. Return the | |
783 | result. */ | |
27d020cf | 784 | |
67ce9099 MJ |
785 | static vec<ipa_freqcounting_predicate, va_gc> * |
786 | remap_freqcounting_preds_after_dup (vec<ipa_freqcounting_predicate, va_gc> *v, | |
787 | clause_t possible_truths) | |
27d020cf | 788 | { |
67ce9099 MJ |
789 | if (vec_safe_length (v) == 0) |
790 | return NULL; | |
27d020cf | 791 | |
67ce9099 MJ |
792 | vec<ipa_freqcounting_predicate, va_gc> *res = v->copy (); |
793 | int len = res->length(); | |
794 | for (int i = len - 1; i >= 0; i--) | |
795 | { | |
2d01bef2 | 796 | ipa_predicate new_predicate |
67ce9099 MJ |
797 | = (*res)[i].predicate->remap_after_duplication (possible_truths); |
798 | /* We do not want to free previous predicate; it is used by node | |
799 | origin. */ | |
800 | (*res)[i].predicate = NULL; | |
801 | set_hint_predicate (&(*res)[i].predicate, new_predicate); | |
802 | ||
803 | if (!(*res)[i].predicate) | |
804 | res->unordered_remove (i); | |
805 | } | |
27d020cf | 806 | |
67ce9099 | 807 | return res; |
27d020cf JH |
808 | } |
809 | ||
810 | ||
e53b6e56 | 811 | /* Hook that is called by cgraph.cc when a node is duplicated. */ |
27d020cf | 812 | void |
0bceb671 | 813 | ipa_fn_summary_t::duplicate (cgraph_node *src, |
27d020cf | 814 | cgraph_node *dst, |
366099ff | 815 | ipa_fn_summary *src_info, |
0bceb671 | 816 | ipa_fn_summary *info) |
27d020cf | 817 | { |
366099ff | 818 | new (info) ipa_fn_summary (*src_info); |
27d020cf JH |
819 | /* TODO: as an optimization, we may avoid copying conditions |
820 | that are known to be false or true. */ | |
821 | info->conds = vec_safe_copy (info->conds); | |
822 | ||
ae7a23a3 | 823 | clone_info *cinfo = clone_info::get (dst); |
27d020cf JH |
824 | /* When there are any replacements in the function body, see if we can figure |
825 | out that something was optimized out. */ | |
ae7a23a3 | 826 | if (ipa_node_params_sum && cinfo && cinfo->tree_map) |
27d020cf | 827 | { |
27d020cf | 828 | /* Use SRC parm info since it may not be copied yet. */ |
a4a3cdd0 | 829 | ipa_node_params *parms_info = ipa_node_params_sum->get (src); |
9d5af1db | 830 | ipa_auto_call_arg_values avals; |
27d020cf JH |
831 | int count = ipa_get_param_count (parms_info); |
832 | int i, j; | |
833 | clause_t possible_truths; | |
2d01bef2 | 834 | ipa_predicate true_pred = true; |
27d020cf JH |
835 | size_time_entry *e; |
836 | int optimized_out_size = 0; | |
837 | bool inlined_to_p = false; | |
838 | struct cgraph_edge *edge, *next; | |
839 | ||
366099ff | 840 | info->size_time_table.release (); |
9d5af1db | 841 | avals.m_known_vals.safe_grow_cleared (count, true); |
27d020cf JH |
842 | for (i = 0; i < count; i++) |
843 | { | |
844 | struct ipa_replace_map *r; | |
845 | ||
ae7a23a3 | 846 | for (j = 0; vec_safe_iterate (cinfo->tree_map, j, &r); j++) |
27d020cf | 847 | { |
ff6686d2 | 848 | if (r->parm_num == i) |
27d020cf | 849 | { |
9d5af1db | 850 | avals.m_known_vals[i] = r->new_tree; |
27d020cf JH |
851 | break; |
852 | } | |
853 | } | |
854 | } | |
855 | evaluate_conditions_for_known_args (dst, false, | |
9d5af1db | 856 | &avals, |
27d020cf JH |
857 | &possible_truths, |
858 | /* We are going to specialize, | |
859 | so ignore nonspec truths. */ | |
5a1ef1cf | 860 | NULL, |
27d020cf | 861 | NULL); |
27d020cf JH |
862 | |
863 | info->account_size_time (0, 0, true_pred, true_pred); | |
864 | ||
865 | /* Remap size_time vectors. | |
956d615d | 866 | Simplify the predicate by pruning out alternatives that are known |
27d020cf JH |
867 | to be false. |
868 | TODO: as on optimization, we can also eliminate conditions known | |
869 | to be true. */ | |
366099ff | 870 | for (i = 0; src_info->size_time_table.iterate (i, &e); i++) |
27d020cf | 871 | { |
2d01bef2 ML |
872 | ipa_predicate new_exec_pred; |
873 | ipa_predicate new_nonconst_pred; | |
27d020cf JH |
874 | new_exec_pred = e->exec_predicate.remap_after_duplication |
875 | (possible_truths); | |
876 | new_nonconst_pred = e->nonconst_predicate.remap_after_duplication | |
877 | (possible_truths); | |
878 | if (new_exec_pred == false || new_nonconst_pred == false) | |
879 | optimized_out_size += e->size; | |
880 | else | |
881 | info->account_size_time (e->size, e->time, new_exec_pred, | |
882 | new_nonconst_pred); | |
883 | } | |
884 | ||
885 | /* Remap edge predicates with the same simplification as above. | |
886 | Also copy constantness arrays. */ | |
887 | for (edge = dst->callees; edge; edge = next) | |
888 | { | |
2d01bef2 | 889 | ipa_predicate new_predicate; |
7237f93e | 890 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
891 | next = edge->next_callee; |
892 | ||
893 | if (!edge->inline_failed) | |
894 | inlined_to_p = true; | |
895 | if (!es->predicate) | |
896 | continue; | |
897 | new_predicate = es->predicate->remap_after_duplication | |
898 | (possible_truths); | |
899 | if (new_predicate == false && *es->predicate != false) | |
0bceb671 | 900 | optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale; |
27d020cf JH |
901 | edge_set_predicate (edge, &new_predicate); |
902 | } | |
903 | ||
956d615d | 904 | /* Remap indirect edge predicates with the same simplification as above. |
27d020cf JH |
905 | Also copy constantness arrays. */ |
906 | for (edge = dst->indirect_calls; edge; edge = next) | |
907 | { | |
2d01bef2 | 908 | ipa_predicate new_predicate; |
7237f93e | 909 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
910 | next = edge->next_callee; |
911 | ||
912 | gcc_checking_assert (edge->inline_failed); | |
913 | if (!es->predicate) | |
914 | continue; | |
915 | new_predicate = es->predicate->remap_after_duplication | |
916 | (possible_truths); | |
917 | if (new_predicate == false && *es->predicate != false) | |
caaa218f JH |
918 | optimized_out_size |
919 | += es->call_stmt_size * ipa_fn_summary::size_scale; | |
27d020cf JH |
920 | edge_set_predicate (edge, &new_predicate); |
921 | } | |
67ce9099 MJ |
922 | info->loop_iterations |
923 | = remap_freqcounting_preds_after_dup (info->loop_iterations, | |
27d020cf | 924 | possible_truths); |
67ce9099 MJ |
925 | info->loop_strides |
926 | = remap_freqcounting_preds_after_dup (info->loop_strides, | |
27d020cf | 927 | possible_truths); |
caaa218f JH |
928 | if (info->builtin_constant_p_parms.length()) |
929 | { | |
930 | vec <int, va_heap, vl_ptr> parms = info->builtin_constant_p_parms; | |
931 | int ip; | |
932 | info->builtin_constant_p_parms = vNULL; | |
933 | for (i = 0; parms.iterate (i, &ip); i++) | |
934 | if (!avals.m_known_vals[ip]) | |
935 | info->builtin_constant_p_parms.safe_push (ip); | |
936 | } | |
27d020cf JH |
937 | |
938 | /* If inliner or someone after inliner will ever start producing | |
939 | non-trivial clones, we will get trouble with lack of information | |
940 | about updating self sizes, because size vectors already contains | |
956d615d | 941 | sizes of the callees. */ |
27d020cf JH |
942 | gcc_assert (!inlined_to_p || !optimized_out_size); |
943 | } | |
944 | else | |
945 | { | |
366099ff JH |
946 | info->size_time_table = src_info->size_time_table.copy (); |
947 | info->loop_iterations = vec_safe_copy (src_info->loop_iterations); | |
67ce9099 MJ |
948 | info->loop_strides = vec_safe_copy (info->loop_strides); |
949 | ||
caaa218f JH |
950 | info->builtin_constant_p_parms |
951 | = info->builtin_constant_p_parms.copy (); | |
952 | ||
67ce9099 MJ |
953 | ipa_freqcounting_predicate *f; |
954 | for (int i = 0; vec_safe_iterate (info->loop_iterations, i, &f); i++) | |
27d020cf | 955 | { |
2d01bef2 | 956 | ipa_predicate p = *f->predicate; |
67ce9099 MJ |
957 | f->predicate = NULL; |
958 | set_hint_predicate (&f->predicate, p); | |
27d020cf | 959 | } |
67ce9099 | 960 | for (int i = 0; vec_safe_iterate (info->loop_strides, i, &f); i++) |
27d020cf | 961 | { |
2d01bef2 | 962 | ipa_predicate p = *f->predicate; |
67ce9099 MJ |
963 | f->predicate = NULL; |
964 | set_hint_predicate (&f->predicate, p); | |
27d020cf | 965 | } |
27d020cf | 966 | } |
a62bfab5 | 967 | if (!dst->inlined_to) |
0bceb671 | 968 | ipa_update_overall_fn_summary (dst); |
27d020cf JH |
969 | } |
970 | ||
971 | ||
e53b6e56 | 972 | /* Hook that is called by cgraph.cc when a node is duplicated. */ |
27d020cf JH |
973 | |
974 | void | |
975 | ipa_call_summary_t::duplicate (struct cgraph_edge *src, | |
976 | struct cgraph_edge *dst, | |
99b1c316 MS |
977 | class ipa_call_summary *srcinfo, |
978 | class ipa_call_summary *info) | |
27d020cf | 979 | { |
56f62793 | 980 | new (info) ipa_call_summary (*srcinfo); |
27d020cf JH |
981 | info->predicate = NULL; |
982 | edge_set_predicate (dst, srcinfo->predicate); | |
983 | info->param = srcinfo->param.copy (); | |
984 | if (!dst->indirect_unknown_callee && src->indirect_unknown_callee) | |
985 | { | |
986 | info->call_stmt_size -= (eni_size_weights.indirect_call_cost | |
987 | - eni_size_weights.call_cost); | |
988 | info->call_stmt_time -= (eni_time_weights.indirect_call_cost | |
989 | - eni_time_weights.call_cost); | |
990 | } | |
991 | } | |
992 | ||
27d020cf JH |
993 | /* Dump edge summaries associated to NODE and recursively to all clones. |
994 | Indent by INDENT. */ | |
995 | ||
996 | static void | |
997 | dump_ipa_call_summary (FILE *f, int indent, struct cgraph_node *node, | |
99b1c316 | 998 | class ipa_fn_summary *info) |
27d020cf JH |
999 | { |
1000 | struct cgraph_edge *edge; | |
1001 | for (edge = node->callees; edge; edge = edge->next_callee) | |
1002 | { | |
99b1c316 | 1003 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
27d020cf JH |
1004 | struct cgraph_node *callee = edge->callee->ultimate_alias_target (); |
1005 | int i; | |
1006 | ||
1007 | fprintf (f, | |
d597b944 ML |
1008 | "%*s%s %s\n%*s freq:%4.2f", |
1009 | indent, "", callee->dump_name (), | |
27d020cf JH |
1010 | !edge->inline_failed |
1011 | ? "inlined" : cgraph_inline_failed_string (edge-> inline_failed), | |
7237f93e JH |
1012 | indent, "", edge->sreal_frequency ().to_double ()); |
1013 | ||
b74d8dc4 JH |
1014 | if (cross_module_call_p (edge)) |
1015 | fprintf (f, " cross module"); | |
1016 | ||
7237f93e JH |
1017 | if (es) |
1018 | fprintf (f, " loop depth:%2i size:%2i time: %2i", | |
1019 | es->loop_depth, es->call_stmt_size, es->call_stmt_time); | |
56f62793 ML |
1020 | |
1021 | ipa_fn_summary *s = ipa_fn_summaries->get (callee); | |
f658ad30 | 1022 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
56f62793 | 1023 | if (s != NULL) |
f658ad30 JH |
1024 | fprintf (f, " callee size:%2i stack:%2i", |
1025 | (int) (ss->size / ipa_fn_summary::size_scale), | |
56f62793 | 1026 | (int) s->estimated_stack_size); |
27d020cf | 1027 | |
7237f93e | 1028 | if (es && es->predicate) |
27d020cf JH |
1029 | { |
1030 | fprintf (f, " predicate: "); | |
1031 | es->predicate->dump (f, info->conds); | |
1032 | } | |
1033 | else | |
1034 | fprintf (f, "\n"); | |
7237f93e | 1035 | if (es && es->param.exists ()) |
27d020cf JH |
1036 | for (i = 0; i < (int) es->param.length (); i++) |
1037 | { | |
1038 | int prob = es->param[i].change_prob; | |
1039 | ||
1040 | if (!prob) | |
1041 | fprintf (f, "%*s op%i is compile time invariant\n", | |
1042 | indent + 2, "", i); | |
1043 | else if (prob != REG_BR_PROB_BASE) | |
1044 | fprintf (f, "%*s op%i change %f%% of time\n", indent + 2, "", i, | |
1045 | prob * 100.0 / REG_BR_PROB_BASE); | |
b89e4559 JH |
1046 | if (es->param[i].points_to_local_or_readonly_memory) |
1047 | fprintf (f, "%*s op%i points to local or readonly memory\n", | |
1048 | indent + 2, "", i); | |
5a1ef1cf H |
1049 | if (es->param[i].points_to_possible_sra_candidate) |
1050 | fprintf (f, "%*s op%i points to possible sra candidate\n", | |
1051 | indent + 2, "", i); | |
27d020cf JH |
1052 | } |
1053 | if (!edge->inline_failed) | |
1054 | { | |
f658ad30 JH |
1055 | ipa_size_summary *ss = ipa_size_summaries->get (callee); |
1056 | fprintf (f, "%*sStack frame offset %i, callee self size %i\n", | |
27d020cf | 1057 | indent + 2, "", |
f658ad30 JH |
1058 | (int) ipa_get_stack_frame_offset (callee), |
1059 | (int) ss->estimated_self_stack_size); | |
27d020cf JH |
1060 | dump_ipa_call_summary (f, indent + 2, callee, info); |
1061 | } | |
1062 | } | |
1063 | for (edge = node->indirect_calls; edge; edge = edge->next_callee) | |
1064 | { | |
99b1c316 | 1065 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
41f0e819 | 1066 | fprintf (f, "%*sindirect call loop depth:%2i freq:%4.2f size:%2i" |
27d020cf JH |
1067 | " time: %2i", |
1068 | indent, "", | |
1069 | es->loop_depth, | |
41f0e819 JH |
1070 | edge->sreal_frequency ().to_double (), es->call_stmt_size, |
1071 | es->call_stmt_time); | |
27d020cf JH |
1072 | if (es->predicate) |
1073 | { | |
1074 | fprintf (f, "predicate: "); | |
1075 | es->predicate->dump (f, info->conds); | |
1076 | } | |
1077 | else | |
1078 | fprintf (f, "\n"); | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | ||
1083 | void | |
0bceb671 | 1084 | ipa_dump_fn_summary (FILE *f, struct cgraph_node *node) |
27d020cf JH |
1085 | { |
1086 | if (node->definition) | |
1087 | { | |
99b1c316 | 1088 | class ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 1089 | class ipa_size_summary *ss = ipa_size_summaries->get (node); |
56f62793 | 1090 | if (s != NULL) |
27d020cf | 1091 | { |
56f62793 ML |
1092 | size_time_entry *e; |
1093 | int i; | |
1094 | fprintf (f, "IPA function summary for %s", node->dump_name ()); | |
1095 | if (DECL_DISREGARD_INLINE_LIMITS (node->decl)) | |
1096 | fprintf (f, " always_inline"); | |
1097 | if (s->inlinable) | |
1098 | fprintf (f, " inlinable"); | |
1099 | if (s->fp_expressions) | |
1100 | fprintf (f, " fp_expression"); | |
caaa218f JH |
1101 | if (s->builtin_constant_p_parms.length ()) |
1102 | { | |
1103 | fprintf (f, " builtin_constant_p_parms"); | |
1104 | for (unsigned int i = 0; | |
1105 | i < s->builtin_constant_p_parms.length (); i++) | |
1106 | fprintf (f, " %i", s->builtin_constant_p_parms[i]); | |
1107 | } | |
56f62793 | 1108 | fprintf (f, "\n global time: %f\n", s->time.to_double ()); |
f658ad30 JH |
1109 | fprintf (f, " self size: %i\n", ss->self_size); |
1110 | fprintf (f, " global size: %i\n", ss->size); | |
56f62793 ML |
1111 | fprintf (f, " min size: %i\n", s->min_size); |
1112 | fprintf (f, " self stack: %i\n", | |
f658ad30 | 1113 | (int) ss->estimated_self_stack_size); |
56f62793 ML |
1114 | fprintf (f, " global stack: %i\n", (int) s->estimated_stack_size); |
1115 | if (s->growth) | |
1116 | fprintf (f, " estimated growth:%i\n", (int) s->growth); | |
1117 | if (s->scc_no) | |
1118 | fprintf (f, " In SCC: %i\n", (int) s->scc_no); | |
366099ff | 1119 | for (i = 0; s->size_time_table.iterate (i, &e); i++) |
56f62793 ML |
1120 | { |
1121 | fprintf (f, " size:%f, time:%f", | |
1122 | (double) e->size / ipa_fn_summary::size_scale, | |
1123 | e->time.to_double ()); | |
1124 | if (e->exec_predicate != true) | |
1125 | { | |
1126 | fprintf (f, ", executed if:"); | |
1127 | e->exec_predicate.dump (f, s->conds, 0); | |
1128 | } | |
1129 | if (e->exec_predicate != e->nonconst_predicate) | |
1130 | { | |
1131 | fprintf (f, ", nonconst if:"); | |
1132 | e->nonconst_predicate.dump (f, s->conds, 0); | |
1133 | } | |
1134 | fprintf (f, "\n"); | |
1135 | } | |
67ce9099 MJ |
1136 | ipa_freqcounting_predicate *fcp; |
1137 | bool first_fcp = true; | |
1138 | for (int i = 0; vec_safe_iterate (s->loop_iterations, i, &fcp); i++) | |
27d020cf | 1139 | { |
67ce9099 MJ |
1140 | if (first_fcp) |
1141 | { | |
1142 | fprintf (f, " loop iterations:"); | |
1143 | first_fcp = false; | |
1144 | } | |
1145 | fprintf (f, " %3.2f for ", fcp->freq.to_double ()); | |
1146 | fcp->predicate->dump (f, s->conds); | |
27d020cf | 1147 | } |
67ce9099 MJ |
1148 | first_fcp = true; |
1149 | for (int i = 0; vec_safe_iterate (s->loop_strides, i, &fcp); i++) | |
27d020cf | 1150 | { |
67ce9099 MJ |
1151 | if (first_fcp) |
1152 | { | |
1153 | fprintf (f, " loop strides:"); | |
1154 | first_fcp = false; | |
1155 | } | |
1156 | fprintf (f, " %3.2f for :", fcp->freq.to_double ()); | |
1157 | fcp->predicate->dump (f, s->conds); | |
27d020cf | 1158 | } |
56f62793 ML |
1159 | fprintf (f, " calls:\n"); |
1160 | dump_ipa_call_summary (f, 4, node, s); | |
27d020cf | 1161 | fprintf (f, "\n"); |
0fc60c18 KL |
1162 | if (s->target_info) |
1163 | fprintf (f, " target_info: %x\n", s->target_info); | |
27d020cf | 1164 | } |
56f62793 ML |
1165 | else |
1166 | fprintf (f, "IPA summary for %s is missing.\n", node->dump_name ()); | |
27d020cf JH |
1167 | } |
1168 | } | |
1169 | ||
1170 | DEBUG_FUNCTION void | |
0bceb671 | 1171 | ipa_debug_fn_summary (struct cgraph_node *node) |
27d020cf | 1172 | { |
0bceb671 | 1173 | ipa_dump_fn_summary (stderr, node); |
27d020cf JH |
1174 | } |
1175 | ||
1176 | void | |
0bceb671 | 1177 | ipa_dump_fn_summaries (FILE *f) |
27d020cf JH |
1178 | { |
1179 | struct cgraph_node *node; | |
1180 | ||
1181 | FOR_EACH_DEFINED_FUNCTION (node) | |
a62bfab5 | 1182 | if (!node->inlined_to) |
0bceb671 | 1183 | ipa_dump_fn_summary (f, node); |
27d020cf JH |
1184 | } |
1185 | ||
1186 | /* Callback of walk_aliased_vdefs. Flags that it has been invoked to the | |
1187 | boolean variable pointed to by DATA. */ | |
1188 | ||
1189 | static bool | |
1190 | mark_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef ATTRIBUTE_UNUSED, | |
1191 | void *data) | |
1192 | { | |
1193 | bool *b = (bool *) data; | |
1194 | *b = true; | |
1195 | return true; | |
1196 | } | |
1197 | ||
1198 | /* If OP refers to value of function parameter, return the corresponding | |
1199 | parameter. If non-NULL, the size of the memory load (or the SSA_NAME of the | |
1200 | PARM_DECL) will be stored to *SIZE_P in that case too. */ | |
1201 | ||
1202 | static tree | |
c628d1c3 | 1203 | unmodified_parm_1 (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1204 | poly_int64 *size_p) |
27d020cf JH |
1205 | { |
1206 | /* SSA_NAME referring to parm default def? */ | |
1207 | if (TREE_CODE (op) == SSA_NAME | |
1208 | && SSA_NAME_IS_DEFAULT_DEF (op) | |
1209 | && TREE_CODE (SSA_NAME_VAR (op)) == PARM_DECL) | |
1210 | { | |
1211 | if (size_p) | |
86003645 | 1212 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1213 | return SSA_NAME_VAR (op); |
1214 | } | |
1215 | /* Non-SSA parm reference? */ | |
6cc886bf RB |
1216 | if (TREE_CODE (op) == PARM_DECL |
1217 | && fbi->aa_walk_budget > 0) | |
27d020cf JH |
1218 | { |
1219 | bool modified = false; | |
1220 | ||
1221 | ao_ref refd; | |
1222 | ao_ref_init (&refd, op); | |
c628d1c3 MJ |
1223 | int walked = walk_aliased_vdefs (&refd, gimple_vuse (stmt), |
1224 | mark_modified, &modified, NULL, NULL, | |
6cc886bf | 1225 | fbi->aa_walk_budget); |
c628d1c3 MJ |
1226 | if (walked < 0) |
1227 | { | |
1228 | fbi->aa_walk_budget = 0; | |
1229 | return NULL_TREE; | |
1230 | } | |
6cc886bf | 1231 | fbi->aa_walk_budget -= walked; |
27d020cf JH |
1232 | if (!modified) |
1233 | { | |
1234 | if (size_p) | |
86003645 | 1235 | *size_p = tree_to_poly_int64 (TYPE_SIZE (TREE_TYPE (op))); |
27d020cf JH |
1236 | return op; |
1237 | } | |
1238 | } | |
1239 | return NULL_TREE; | |
1240 | } | |
1241 | ||
1242 | /* If OP refers to value of function parameter, return the corresponding | |
1243 | parameter. Also traverse chains of SSA register assignments. If non-NULL, | |
1244 | the size of the memory load (or the SSA_NAME of the PARM_DECL) will be | |
1245 | stored to *SIZE_P in that case too. */ | |
1246 | ||
1247 | static tree | |
c628d1c3 | 1248 | unmodified_parm (ipa_func_body_info *fbi, gimple *stmt, tree op, |
86003645 | 1249 | poly_int64 *size_p) |
27d020cf | 1250 | { |
c628d1c3 | 1251 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1252 | if (res) |
1253 | return res; | |
1254 | ||
1255 | if (TREE_CODE (op) == SSA_NAME | |
1256 | && !SSA_NAME_IS_DEFAULT_DEF (op) | |
1257 | && gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
c628d1c3 | 1258 | return unmodified_parm (fbi, SSA_NAME_DEF_STMT (op), |
27d020cf JH |
1259 | gimple_assign_rhs1 (SSA_NAME_DEF_STMT (op)), |
1260 | size_p); | |
1261 | return NULL_TREE; | |
1262 | } | |
1263 | ||
1264 | /* If OP refers to a value of a function parameter or value loaded from an | |
1265 | aggregate passed to a parameter (either by value or reference), return TRUE | |
1266 | and store the number of the parameter to *INDEX_P, the access size into | |
1267 | *SIZE_P, and information whether and how it has been loaded from an | |
1268 | aggregate into *AGGPOS. INFO describes the function parameters, STMT is the | |
1269 | statement in which OP is used or loaded. */ | |
1270 | ||
1271 | static bool | |
1272 | unmodified_parm_or_parm_agg_item (struct ipa_func_body_info *fbi, | |
1273 | gimple *stmt, tree op, int *index_p, | |
86003645 | 1274 | poly_int64 *size_p, |
27d020cf JH |
1275 | struct agg_position_info *aggpos) |
1276 | { | |
c628d1c3 | 1277 | tree res = unmodified_parm_1 (fbi, stmt, op, size_p); |
27d020cf JH |
1278 | |
1279 | gcc_checking_assert (aggpos); | |
1280 | if (res) | |
1281 | { | |
1282 | *index_p = ipa_get_param_decl_index (fbi->info, res); | |
1283 | if (*index_p < 0) | |
1284 | return false; | |
1285 | aggpos->agg_contents = false; | |
1286 | aggpos->by_ref = false; | |
1287 | return true; | |
1288 | } | |
1289 | ||
1290 | if (TREE_CODE (op) == SSA_NAME) | |
1291 | { | |
1292 | if (SSA_NAME_IS_DEFAULT_DEF (op) | |
1293 | || !gimple_assign_single_p (SSA_NAME_DEF_STMT (op))) | |
1294 | return false; | |
1295 | stmt = SSA_NAME_DEF_STMT (op); | |
1296 | op = gimple_assign_rhs1 (stmt); | |
1297 | if (!REFERENCE_CLASS_P (op)) | |
1298 | return unmodified_parm_or_parm_agg_item (fbi, stmt, op, index_p, size_p, | |
1299 | aggpos); | |
1300 | } | |
1301 | ||
1302 | aggpos->agg_contents = true; | |
1303 | return ipa_load_from_parm_agg (fbi, fbi->info->descriptors, | |
1304 | stmt, op, index_p, &aggpos->offset, | |
1305 | size_p, &aggpos->by_ref); | |
1306 | } | |
1307 | ||
5a1ef1cf H |
1308 | /* If stmt is simple load or store of value pointed to by a function parmaeter, |
1309 | return its index. */ | |
1310 | ||
1311 | static int | |
1312 | load_or_store_of_ptr_parameter (ipa_func_body_info *fbi, gimple *stmt) | |
1313 | { | |
1314 | if (!optimize) | |
1315 | return -1; | |
1316 | gassign *assign = dyn_cast <gassign *> (stmt); | |
1317 | if (!assign) | |
1318 | return -1; | |
1319 | tree param; | |
1320 | if (gimple_assign_load_p (stmt)) | |
1321 | param = gimple_assign_rhs1 (stmt); | |
1322 | else if (gimple_store_p (stmt)) | |
1323 | param = gimple_assign_lhs (stmt); | |
1324 | else | |
1325 | return -1; | |
1326 | tree base = get_base_address (param); | |
1327 | if (TREE_CODE (base) != MEM_REF | |
1328 | || TREE_CODE (TREE_OPERAND (base, 0)) != SSA_NAME | |
1329 | || !SSA_NAME_IS_DEFAULT_DEF (TREE_OPERAND (base, 0))) | |
1330 | return -1; | |
1331 | tree p = SSA_NAME_VAR (TREE_OPERAND (base, 0)); | |
1332 | if (TREE_CODE (p) != PARM_DECL) | |
1333 | return -1; | |
1334 | return ipa_get_param_decl_index (fbi->info, p); | |
1335 | } | |
1336 | ||
27d020cf JH |
1337 | /* See if statement might disappear after inlining. |
1338 | 0 - means not eliminated | |
1339 | 1 - half of statements goes away | |
1340 | 2 - for sure it is eliminated. | |
1341 | We are not terribly sophisticated, basically looking for simple abstraction | |
1342 | penalty wrappers. */ | |
1343 | ||
1344 | static int | |
c628d1c3 | 1345 | eliminated_by_inlining_prob (ipa_func_body_info *fbi, gimple *stmt) |
27d020cf JH |
1346 | { |
1347 | enum gimple_code code = gimple_code (stmt); | |
1348 | enum tree_code rhs_code; | |
1349 | ||
1350 | if (!optimize) | |
1351 | return 0; | |
1352 | ||
1353 | switch (code) | |
1354 | { | |
1355 | case GIMPLE_RETURN: | |
1356 | return 2; | |
1357 | case GIMPLE_ASSIGN: | |
1358 | if (gimple_num_ops (stmt) != 2) | |
1359 | return 0; | |
1360 | ||
1361 | rhs_code = gimple_assign_rhs_code (stmt); | |
1362 | ||
1363 | /* Casts of parameters, loads from parameters passed by reference | |
1364 | and stores to return value or parameters are often free after | |
956d615d | 1365 | inlining due to SRA and further combining. |
27d020cf JH |
1366 | Assume that half of statements goes away. */ |
1367 | if (CONVERT_EXPR_CODE_P (rhs_code) | |
1368 | || rhs_code == VIEW_CONVERT_EXPR | |
1369 | || rhs_code == ADDR_EXPR | |
1370 | || gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS) | |
1371 | { | |
1372 | tree rhs = gimple_assign_rhs1 (stmt); | |
1373 | tree lhs = gimple_assign_lhs (stmt); | |
1374 | tree inner_rhs = get_base_address (rhs); | |
1375 | tree inner_lhs = get_base_address (lhs); | |
1376 | bool rhs_free = false; | |
1377 | bool lhs_free = false; | |
1378 | ||
1379 | if (!inner_rhs) | |
1380 | inner_rhs = rhs; | |
1381 | if (!inner_lhs) | |
1382 | inner_lhs = lhs; | |
1383 | ||
1384 | /* Reads of parameter are expected to be free. */ | |
c628d1c3 | 1385 | if (unmodified_parm (fbi, stmt, inner_rhs, NULL)) |
27d020cf JH |
1386 | rhs_free = true; |
1387 | /* Match expressions of form &this->field. Those will most likely | |
1388 | combine with something upstream after inlining. */ | |
1389 | else if (TREE_CODE (inner_rhs) == ADDR_EXPR) | |
1390 | { | |
1391 | tree op = get_base_address (TREE_OPERAND (inner_rhs, 0)); | |
1392 | if (TREE_CODE (op) == PARM_DECL) | |
1393 | rhs_free = true; | |
1394 | else if (TREE_CODE (op) == MEM_REF | |
c628d1c3 MJ |
1395 | && unmodified_parm (fbi, stmt, TREE_OPERAND (op, 0), |
1396 | NULL)) | |
27d020cf JH |
1397 | rhs_free = true; |
1398 | } | |
1399 | ||
1400 | /* When parameter is not SSA register because its address is taken | |
1401 | and it is just copied into one, the statement will be completely | |
1402 | free after inlining (we will copy propagate backward). */ | |
1403 | if (rhs_free && is_gimple_reg (lhs)) | |
1404 | return 2; | |
1405 | ||
1406 | /* Reads of parameters passed by reference | |
1407 | expected to be free (i.e. optimized out after inlining). */ | |
1408 | if (TREE_CODE (inner_rhs) == MEM_REF | |
c628d1c3 | 1409 | && unmodified_parm (fbi, stmt, TREE_OPERAND (inner_rhs, 0), NULL)) |
27d020cf JH |
1410 | rhs_free = true; |
1411 | ||
1412 | /* Copying parameter passed by reference into gimple register is | |
1413 | probably also going to copy propagate, but we can't be quite | |
1414 | sure. */ | |
1415 | if (rhs_free && is_gimple_reg (lhs)) | |
1416 | lhs_free = true; | |
1417 | ||
1418 | /* Writes to parameters, parameters passed by value and return value | |
956d615d | 1419 | (either directly or passed via invisible reference) are free. |
27d020cf JH |
1420 | |
1421 | TODO: We ought to handle testcase like | |
1422 | struct a {int a,b;}; | |
1423 | struct a | |
956d615d | 1424 | returnstruct (void) |
27d020cf JH |
1425 | { |
1426 | struct a a ={1,2}; | |
1427 | return a; | |
1428 | } | |
1429 | ||
1430 | This translate into: | |
1431 | ||
956d615d | 1432 | returnstruct () |
27d020cf JH |
1433 | { |
1434 | int a$b; | |
1435 | int a$a; | |
1436 | struct a a; | |
1437 | struct a D.2739; | |
1438 | ||
1439 | <bb 2>: | |
1440 | D.2739.a = 1; | |
1441 | D.2739.b = 2; | |
1442 | return D.2739; | |
1443 | ||
1444 | } | |
1445 | For that we either need to copy ipa-split logic detecting writes | |
1446 | to return value. */ | |
1447 | if (TREE_CODE (inner_lhs) == PARM_DECL | |
1448 | || TREE_CODE (inner_lhs) == RESULT_DECL | |
1449 | || (TREE_CODE (inner_lhs) == MEM_REF | |
c628d1c3 MJ |
1450 | && (unmodified_parm (fbi, stmt, TREE_OPERAND (inner_lhs, 0), |
1451 | NULL) | |
27d020cf JH |
1452 | || (TREE_CODE (TREE_OPERAND (inner_lhs, 0)) == SSA_NAME |
1453 | && SSA_NAME_VAR (TREE_OPERAND (inner_lhs, 0)) | |
1454 | && TREE_CODE (SSA_NAME_VAR (TREE_OPERAND | |
1455 | (inner_lhs, | |
1456 | 0))) == RESULT_DECL)))) | |
1457 | lhs_free = true; | |
1458 | if (lhs_free | |
1459 | && (is_gimple_reg (rhs) || is_gimple_min_invariant (rhs))) | |
1460 | rhs_free = true; | |
1461 | if (lhs_free && rhs_free) | |
1462 | return 1; | |
1463 | } | |
1464 | return 0; | |
1465 | default: | |
1466 | return 0; | |
1467 | } | |
1468 | } | |
1469 | ||
4307a485 FX |
1470 | /* Analyze EXPR if it represents a series of simple operations performed on |
1471 | a function parameter and return true if so. FBI, STMT, EXPR, INDEX_P and | |
1472 | AGGPOS have the same meaning like in unmodified_parm_or_parm_agg_item. | |
1473 | Type of the parameter or load from an aggregate via the parameter is | |
1474 | stored in *TYPE_P. Operations on the parameter are recorded to | |
1475 | PARAM_OPS_P if it is not NULL. */ | |
1476 | ||
1477 | static bool | |
1478 | decompose_param_expr (struct ipa_func_body_info *fbi, | |
1479 | gimple *stmt, tree expr, | |
1480 | int *index_p, tree *type_p, | |
1481 | struct agg_position_info *aggpos, | |
1482 | expr_eval_ops *param_ops_p = NULL) | |
1483 | { | |
fdfd7f53 | 1484 | int op_limit = opt_for_fn (fbi->node->decl, param_ipa_max_param_expr_ops); |
4307a485 FX |
1485 | int op_count = 0; |
1486 | ||
1487 | if (param_ops_p) | |
1488 | *param_ops_p = NULL; | |
1489 | ||
1490 | while (true) | |
1491 | { | |
1492 | expr_eval_op eval_op; | |
1493 | unsigned rhs_count; | |
1494 | unsigned cst_count = 0; | |
1495 | ||
1496 | if (unmodified_parm_or_parm_agg_item (fbi, stmt, expr, index_p, NULL, | |
1497 | aggpos)) | |
1498 | { | |
1499 | tree type = TREE_TYPE (expr); | |
1500 | ||
1501 | if (aggpos->agg_contents) | |
1502 | { | |
1503 | /* Stop if containing bit-field. */ | |
1504 | if (TREE_CODE (expr) == BIT_FIELD_REF | |
1505 | || contains_bitfld_component_ref_p (expr)) | |
1506 | break; | |
1507 | } | |
1508 | ||
1509 | *type_p = type; | |
1510 | return true; | |
1511 | } | |
1512 | ||
1513 | if (TREE_CODE (expr) != SSA_NAME || SSA_NAME_IS_DEFAULT_DEF (expr)) | |
1514 | break; | |
9dc18fca JH |
1515 | stmt = SSA_NAME_DEF_STMT (expr); |
1516 | ||
1517 | if (gcall *call = dyn_cast <gcall *> (stmt)) | |
1518 | { | |
1519 | int flags = gimple_call_return_flags (call); | |
1520 | if (!(flags & ERF_RETURNS_ARG)) | |
1521 | goto fail; | |
1522 | int arg = flags & ERF_RETURN_ARG_MASK; | |
1523 | if (arg >= (int)gimple_call_num_args (call)) | |
1524 | goto fail; | |
1525 | expr = gimple_call_arg (stmt, arg); | |
1526 | continue; | |
1527 | } | |
4307a485 FX |
1528 | |
1529 | if (!is_gimple_assign (stmt = SSA_NAME_DEF_STMT (expr))) | |
1530 | break; | |
1531 | ||
1532 | switch (gimple_assign_rhs_class (stmt)) | |
1533 | { | |
1534 | case GIMPLE_SINGLE_RHS: | |
1535 | expr = gimple_assign_rhs1 (stmt); | |
1536 | continue; | |
1537 | ||
1538 | case GIMPLE_UNARY_RHS: | |
1539 | rhs_count = 1; | |
1540 | break; | |
1541 | ||
1542 | case GIMPLE_BINARY_RHS: | |
1543 | rhs_count = 2; | |
1544 | break; | |
1545 | ||
1546 | case GIMPLE_TERNARY_RHS: | |
1547 | rhs_count = 3; | |
1548 | break; | |
1549 | ||
1550 | default: | |
1551 | goto fail; | |
1552 | } | |
1553 | ||
1554 | /* Stop if expression is too complex. */ | |
1555 | if (op_count++ == op_limit) | |
1556 | break; | |
1557 | ||
1558 | if (param_ops_p) | |
1559 | { | |
1560 | eval_op.code = gimple_assign_rhs_code (stmt); | |
1561 | eval_op.type = TREE_TYPE (gimple_assign_lhs (stmt)); | |
1562 | eval_op.val[0] = NULL_TREE; | |
1563 | eval_op.val[1] = NULL_TREE; | |
1564 | } | |
1565 | ||
1566 | expr = NULL_TREE; | |
1567 | for (unsigned i = 0; i < rhs_count; i++) | |
1568 | { | |
1569 | tree op = gimple_op (stmt, i + 1); | |
1570 | ||
1571 | gcc_assert (op && !TYPE_P (op)); | |
1572 | if (is_gimple_ip_invariant (op)) | |
1573 | { | |
1574 | if (++cst_count == rhs_count) | |
1575 | goto fail; | |
1576 | ||
1577 | eval_op.val[cst_count - 1] = op; | |
1578 | } | |
1579 | else if (!expr) | |
1580 | { | |
1581 | /* Found a non-constant operand, and record its index in rhs | |
1582 | operands. */ | |
1583 | eval_op.index = i; | |
1584 | expr = op; | |
1585 | } | |
1586 | else | |
1587 | { | |
1588 | /* Found more than one non-constant operands. */ | |
1589 | goto fail; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | if (param_ops_p) | |
1594 | vec_safe_insert (*param_ops_p, 0, eval_op); | |
1595 | } | |
1596 | ||
1597 | /* Failed to decompose, free resource and return. */ | |
1598 | fail: | |
1599 | if (param_ops_p) | |
1600 | vec_free (*param_ops_p); | |
1601 | ||
1602 | return false; | |
1603 | } | |
27d020cf | 1604 | |
caaa218f JH |
1605 | /* Record to SUMMARY that PARM is used by builtin_constant_p. */ |
1606 | ||
1607 | static void | |
1608 | add_builtin_constant_p_parm (class ipa_fn_summary *summary, int parm) | |
1609 | { | |
1610 | int ip; | |
1611 | ||
1612 | /* Avoid duplicates. */ | |
1613 | for (unsigned int i = 0; | |
1614 | summary->builtin_constant_p_parms.iterate (i, &ip); i++) | |
1615 | if (ip == parm) | |
1616 | return; | |
1617 | summary->builtin_constant_p_parms.safe_push (parm); | |
1618 | } | |
1619 | ||
27d020cf JH |
1620 | /* If BB ends by a conditional we can turn into predicates, attach corresponding |
1621 | predicates to the CFG edges. */ | |
1622 | ||
1623 | static void | |
1624 | set_cond_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1625 | class ipa_fn_summary *summary, |
40a777e8 | 1626 | class ipa_node_params *params_summary, |
27d020cf JH |
1627 | basic_block bb) |
1628 | { | |
4307a485 | 1629 | tree op, op2; |
27d020cf | 1630 | int index; |
27d020cf JH |
1631 | struct agg_position_info aggpos; |
1632 | enum tree_code code, inverted_code; | |
1633 | edge e; | |
1634 | edge_iterator ei; | |
1635 | gimple *set_stmt; | |
4307a485 FX |
1636 | tree param_type; |
1637 | expr_eval_ops param_ops; | |
27d020cf | 1638 | |
60bf26a4 RB |
1639 | gcond *last = safe_dyn_cast <gcond *> (*gsi_last_bb (bb)); |
1640 | if (!last) | |
27d020cf JH |
1641 | return; |
1642 | if (!is_gimple_ip_invariant (gimple_cond_rhs (last))) | |
1643 | return; | |
1644 | op = gimple_cond_lhs (last); | |
4307a485 FX |
1645 | |
1646 | if (decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, | |
1647 | ¶m_ops)) | |
27d020cf JH |
1648 | { |
1649 | code = gimple_cond_code (last); | |
1650 | inverted_code = invert_tree_comparison (code, HONOR_NANS (op)); | |
1651 | ||
1652 | FOR_EACH_EDGE (e, ei, bb->succs) | |
1653 | { | |
1654 | enum tree_code this_code = (e->flags & EDGE_TRUE_VALUE | |
1655 | ? code : inverted_code); | |
1656 | /* invert_tree_comparison will return ERROR_MARK on FP | |
956d615d | 1657 | comparisons that are not EQ/NE instead of returning proper |
efe12656 FX |
1658 | unordered one. Be sure it is not confused with NON_CONSTANT. |
1659 | ||
1660 | And if the edge's target is the final block of diamond CFG graph | |
1661 | of this conditional statement, we do not need to compute | |
1662 | predicate for the edge because the final block's predicate must | |
1663 | be at least as that of the first block of the statement. */ | |
1664 | if (this_code != ERROR_MARK | |
1665 | && !dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
27d020cf | 1666 | { |
2d01bef2 | 1667 | ipa_predicate p |
40a777e8 JH |
1668 | = add_condition (summary, params_summary, index, |
1669 | param_type, &aggpos, | |
4307a485 | 1670 | this_code, gimple_cond_rhs (last), param_ops); |
27d020cf | 1671 | e->aux = edge_predicate_pool.allocate (); |
2d01bef2 | 1672 | *(ipa_predicate *) e->aux = p; |
27d020cf JH |
1673 | } |
1674 | } | |
4307a485 | 1675 | vec_free (param_ops); |
9dc18fca | 1676 | return; |
27d020cf JH |
1677 | } |
1678 | ||
1679 | if (TREE_CODE (op) != SSA_NAME) | |
1680 | return; | |
1681 | /* Special case | |
1682 | if (builtin_constant_p (op)) | |
1683 | constant_code | |
1684 | else | |
1685 | nonconstant_code. | |
1686 | Here we can predicate nonconstant_code. We can't | |
1687 | really handle constant_code since we have no predicate | |
1688 | for this and also the constant code is not known to be | |
956d615d | 1689 | optimized away when inliner doesn't see operand is constant. |
27d020cf JH |
1690 | Other optimizers might think otherwise. */ |
1691 | if (gimple_cond_code (last) != NE_EXPR | |
1692 | || !integer_zerop (gimple_cond_rhs (last))) | |
1693 | return; | |
1694 | set_stmt = SSA_NAME_DEF_STMT (op); | |
1695 | if (!gimple_call_builtin_p (set_stmt, BUILT_IN_CONSTANT_P) | |
1696 | || gimple_call_num_args (set_stmt) != 1) | |
1697 | return; | |
1698 | op2 = gimple_call_arg (set_stmt, 0); | |
4307a485 | 1699 | if (!decompose_param_expr (fbi, set_stmt, op2, &index, ¶m_type, &aggpos)) |
27d020cf | 1700 | return; |
caaa218f JH |
1701 | if (!aggpos.by_ref) |
1702 | add_builtin_constant_p_parm (summary, index); | |
27d020cf JH |
1703 | FOR_EACH_EDGE (e, ei, bb->succs) if (e->flags & EDGE_FALSE_VALUE) |
1704 | { | |
2d01bef2 | 1705 | ipa_predicate p = add_condition (summary, params_summary, index, |
40a777e8 | 1706 | param_type, &aggpos, |
2d01bef2 | 1707 | ipa_predicate::is_not_constant, NULL_TREE); |
27d020cf | 1708 | e->aux = edge_predicate_pool.allocate (); |
2d01bef2 | 1709 | *(ipa_predicate *) e->aux = p; |
27d020cf JH |
1710 | } |
1711 | } | |
1712 | ||
1713 | ||
1714 | /* If BB ends by a switch we can turn into predicates, attach corresponding | |
1715 | predicates to the CFG edges. */ | |
1716 | ||
1717 | static void | |
1718 | set_switch_stmt_execution_predicate (struct ipa_func_body_info *fbi, | |
99b1c316 | 1719 | class ipa_fn_summary *summary, |
40a777e8 | 1720 | class ipa_node_params *params_summary, |
27d020cf JH |
1721 | basic_block bb) |
1722 | { | |
27d020cf JH |
1723 | tree op; |
1724 | int index; | |
27d020cf JH |
1725 | struct agg_position_info aggpos; |
1726 | edge e; | |
1727 | edge_iterator ei; | |
1728 | size_t n; | |
1729 | size_t case_idx; | |
4307a485 FX |
1730 | tree param_type; |
1731 | expr_eval_ops param_ops; | |
27d020cf | 1732 | |
60bf26a4 RB |
1733 | gswitch *last = safe_dyn_cast <gswitch *> (*gsi_last_bb (bb)); |
1734 | if (!last) | |
27d020cf | 1735 | return; |
27d020cf | 1736 | op = gimple_switch_index (last); |
4307a485 FX |
1737 | if (!decompose_param_expr (fbi, last, op, &index, ¶m_type, &aggpos, |
1738 | ¶m_ops)) | |
27d020cf JH |
1739 | return; |
1740 | ||
351e7c3b FX |
1741 | auto_vec<std::pair<tree, tree> > ranges; |
1742 | tree type = TREE_TYPE (op); | |
fdfd7f53 ML |
1743 | int bound_limit = opt_for_fn (fbi->node->decl, |
1744 | param_ipa_max_switch_predicate_bounds); | |
351e7c3b | 1745 | int bound_count = 0; |
3c52dff7 AH |
1746 | // This can safely be an integer range, as switches can only hold |
1747 | // integers. | |
1748 | int_range<2> vr; | |
45f4e2b0 AH |
1749 | |
1750 | get_range_query (cfun)->range_of_expr (vr, op); | |
1751 | if (vr.undefined_p ()) | |
1752 | vr.set_varying (TREE_TYPE (op)); | |
5bdc5155 | 1753 | tree vr_min, vr_max; |
3c52dff7 AH |
1754 | // TODO: This entire function could use a rewrite to use the irange |
1755 | // API, instead of trying to recreate its intersection/union logic. | |
1756 | // Any use of get_legacy_range() is a serious code smell. | |
5bdc5155 AH |
1757 | value_range_kind vr_type = get_legacy_range (vr, vr_min, vr_max); |
1758 | wide_int vr_wmin = wi::to_wide (vr_min); | |
1759 | wide_int vr_wmax = wi::to_wide (vr_max); | |
351e7c3b | 1760 | |
27d020cf JH |
1761 | FOR_EACH_EDGE (e, ei, bb->succs) |
1762 | { | |
1763 | e->aux = edge_predicate_pool.allocate (); | |
2d01bef2 | 1764 | *(ipa_predicate *) e->aux = false; |
27d020cf | 1765 | } |
351e7c3b | 1766 | |
efe12656 FX |
1767 | e = gimple_switch_edge (cfun, last, 0); |
1768 | /* Set BOUND_COUNT to maximum count to bypass computing predicate for | |
1769 | default case if its target basic block is in convergence point of all | |
1770 | switch cases, which can be determined by checking whether it | |
1771 | post-dominates the switch statement. */ | |
1772 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1773 | bound_count = INT_MAX; | |
1774 | ||
27d020cf | 1775 | n = gimple_switch_num_labels (last); |
351e7c3b | 1776 | for (case_idx = 1; case_idx < n; ++case_idx) |
27d020cf JH |
1777 | { |
1778 | tree cl = gimple_switch_label (last, case_idx); | |
efe12656 FX |
1779 | tree min = CASE_LOW (cl); |
1780 | tree max = CASE_HIGH (cl); | |
2d01bef2 | 1781 | ipa_predicate p; |
27d020cf | 1782 | |
4307a485 FX |
1783 | e = gimple_switch_edge (cfun, last, case_idx); |
1784 | ||
efe12656 FX |
1785 | /* The case value might not have same type as switch expression, |
1786 | extend the value based on the expression type. */ | |
1787 | if (TREE_TYPE (min) != type) | |
1788 | min = wide_int_to_tree (type, wi::to_wide (min)); | |
27d020cf | 1789 | |
351e7c3b | 1790 | if (!max) |
efe12656 FX |
1791 | max = min; |
1792 | else if (TREE_TYPE (max) != type) | |
1793 | max = wide_int_to_tree (type, wi::to_wide (max)); | |
1794 | ||
1795 | /* The case's target basic block is in convergence point of all switch | |
1796 | cases, its predicate should be at least as that of the switch | |
1797 | statement. */ | |
1798 | if (dominated_by_p (CDI_POST_DOMINATORS, bb, e->dest)) | |
1799 | p = true; | |
1800 | else if (min == max) | |
40a777e8 JH |
1801 | p = add_condition (summary, params_summary, index, param_type, |
1802 | &aggpos, EQ_EXPR, min, param_ops); | |
27d020cf JH |
1803 | else |
1804 | { | |
2d01bef2 | 1805 | ipa_predicate p1, p2; |
40a777e8 JH |
1806 | p1 = add_condition (summary, params_summary, index, param_type, |
1807 | &aggpos, GE_EXPR, min, param_ops); | |
1808 | p2 = add_condition (summary, params_summary,index, param_type, | |
1809 | &aggpos, LE_EXPR, max, param_ops); | |
27d020cf JH |
1810 | p = p1 & p2; |
1811 | } | |
2d01bef2 ML |
1812 | *(ipa_predicate *) e->aux |
1813 | = p.or_with (summary->conds, *(ipa_predicate *) e->aux); | |
351e7c3b FX |
1814 | |
1815 | /* If there are too many disjoint case ranges, predicate for default | |
1816 | case might become too complicated. So add a limit here. */ | |
1817 | if (bound_count > bound_limit) | |
1818 | continue; | |
1819 | ||
1820 | bool new_range = true; | |
1821 | ||
1822 | if (!ranges.is_empty ()) | |
1823 | { | |
1824 | wide_int curr_wmin = wi::to_wide (min); | |
1825 | wide_int last_wmax = wi::to_wide (ranges.last ().second); | |
1826 | ||
1827 | /* Merge case ranges if they are continuous. */ | |
1828 | if (curr_wmin == last_wmax + 1) | |
1829 | new_range = false; | |
1830 | else if (vr_type == VR_ANTI_RANGE) | |
1831 | { | |
1832 | /* If two disjoint case ranges can be connected by anti-range | |
1833 | of switch index, combine them to one range. */ | |
1834 | if (wi::lt_p (vr_wmax, curr_wmin - 1, TYPE_SIGN (type))) | |
1835 | vr_type = VR_UNDEFINED; | |
1836 | else if (wi::le_p (vr_wmin, last_wmax + 1, TYPE_SIGN (type))) | |
1837 | new_range = false; | |
1838 | } | |
1839 | } | |
1840 | ||
351e7c3b FX |
1841 | /* Create/extend a case range. And we count endpoints of range set, |
1842 | this number nearly equals to number of conditions that we will create | |
1843 | for predicate of default case. */ | |
1844 | if (new_range) | |
1845 | { | |
1846 | bound_count += (min == max) ? 1 : 2; | |
1847 | ranges.safe_push (std::make_pair (min, max)); | |
1848 | } | |
1849 | else | |
1850 | { | |
1851 | bound_count += (ranges.last ().first == ranges.last ().second); | |
1852 | ranges.last ().second = max; | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | e = gimple_switch_edge (cfun, last, 0); | |
1857 | if (bound_count > bound_limit) | |
1858 | { | |
2d01bef2 | 1859 | *(ipa_predicate *) e->aux = true; |
4307a485 | 1860 | vec_free (param_ops); |
351e7c3b | 1861 | return; |
27d020cf | 1862 | } |
351e7c3b | 1863 | |
2d01bef2 ML |
1864 | ipa_predicate p_seg = true; |
1865 | ipa_predicate p_all = false; | |
351e7c3b FX |
1866 | |
1867 | if (vr_type != VR_RANGE) | |
1868 | { | |
1869 | vr_wmin = wi::to_wide (TYPE_MIN_VALUE (type)); | |
1870 | vr_wmax = wi::to_wide (TYPE_MAX_VALUE (type)); | |
1871 | } | |
1872 | ||
1873 | /* Construct predicate to represent default range set that is negation of | |
1874 | all case ranges. Case range is classified as containing single/non-single | |
1875 | values. Suppose a piece of case ranges in the following. | |
1876 | ||
1877 | [D1...D2] [S1] ... [Sn] [D3...D4] | |
1878 | ||
1879 | To represent default case's range sets between two non-single value | |
1880 | case ranges (From D2 to D3), we construct predicate as: | |
1881 | ||
1882 | D2 < x < D3 && x != S1 && ... && x != Sn | |
1883 | */ | |
1884 | for (size_t i = 0; i < ranges.length (); i++) | |
1885 | { | |
1886 | tree min = ranges[i].first; | |
1887 | tree max = ranges[i].second; | |
1888 | ||
1889 | if (min == max) | |
40a777e8 JH |
1890 | p_seg &= add_condition (summary, params_summary, index, |
1891 | param_type, &aggpos, NE_EXPR, | |
4307a485 | 1892 | min, param_ops); |
351e7c3b FX |
1893 | else |
1894 | { | |
1895 | /* Do not create sub-predicate for range that is beyond low bound | |
1896 | of switch index. */ | |
1897 | if (wi::lt_p (vr_wmin, wi::to_wide (min), TYPE_SIGN (type))) | |
1898 | { | |
40a777e8 JH |
1899 | p_seg &= add_condition (summary, params_summary, index, |
1900 | param_type, &aggpos, | |
4307a485 | 1901 | LT_EXPR, min, param_ops); |
351e7c3b FX |
1902 | p_all = p_all.or_with (summary->conds, p_seg); |
1903 | } | |
1904 | ||
1905 | /* Do not create sub-predicate for range that is beyond up bound | |
1906 | of switch index. */ | |
1907 | if (wi::le_p (vr_wmax, wi::to_wide (max), TYPE_SIGN (type))) | |
1908 | { | |
1909 | p_seg = false; | |
1910 | break; | |
1911 | } | |
1912 | ||
40a777e8 | 1913 | p_seg = add_condition (summary, params_summary, index, |
366099ff | 1914 | param_type, &aggpos, GT_EXPR, |
4307a485 | 1915 | max, param_ops); |
351e7c3b FX |
1916 | } |
1917 | } | |
1918 | ||
1919 | p_all = p_all.or_with (summary->conds, p_seg); | |
2d01bef2 ML |
1920 | *(ipa_predicate *) e->aux |
1921 | = p_all.or_with (summary->conds, *(ipa_predicate *) e->aux); | |
4307a485 FX |
1922 | |
1923 | vec_free (param_ops); | |
27d020cf JH |
1924 | } |
1925 | ||
1926 | ||
1927 | /* For each BB in NODE attach to its AUX pointer predicate under | |
1928 | which it is executable. */ | |
1929 | ||
1930 | static void | |
1931 | compute_bb_predicates (struct ipa_func_body_info *fbi, | |
1932 | struct cgraph_node *node, | |
40a777e8 JH |
1933 | class ipa_fn_summary *summary, |
1934 | class ipa_node_params *params_summary) | |
27d020cf JH |
1935 | { |
1936 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
1937 | bool done = false; | |
1938 | basic_block bb; | |
1939 | ||
1940 | FOR_EACH_BB_FN (bb, my_function) | |
1941 | { | |
40a777e8 JH |
1942 | set_cond_stmt_execution_predicate (fbi, summary, params_summary, bb); |
1943 | set_switch_stmt_execution_predicate (fbi, summary, params_summary, bb); | |
27d020cf JH |
1944 | } |
1945 | ||
1946 | /* Entry block is always executable. */ | |
1947 | ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux | |
1948 | = edge_predicate_pool.allocate (); | |
2d01bef2 | 1949 | *(ipa_predicate *) ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux = true; |
27d020cf JH |
1950 | |
1951 | /* A simple dataflow propagation of predicates forward in the CFG. | |
1952 | TODO: work in reverse postorder. */ | |
1953 | while (!done) | |
1954 | { | |
1955 | done = true; | |
1956 | FOR_EACH_BB_FN (bb, my_function) | |
1957 | { | |
2d01bef2 | 1958 | ipa_predicate p = false; |
27d020cf JH |
1959 | edge e; |
1960 | edge_iterator ei; | |
1961 | FOR_EACH_EDGE (e, ei, bb->preds) | |
1962 | { | |
1963 | if (e->src->aux) | |
1964 | { | |
2d01bef2 ML |
1965 | ipa_predicate this_bb_predicate |
1966 | = *(ipa_predicate *) e->src->aux; | |
27d020cf | 1967 | if (e->aux) |
2d01bef2 | 1968 | this_bb_predicate &= (*(ipa_predicate *) e->aux); |
27d020cf JH |
1969 | p = p.or_with (summary->conds, this_bb_predicate); |
1970 | if (p == true) | |
1971 | break; | |
1972 | } | |
1973 | } | |
efe12656 | 1974 | if (p != false) |
27d020cf | 1975 | { |
efe12656 FX |
1976 | basic_block pdom_bb; |
1977 | ||
27d020cf JH |
1978 | if (!bb->aux) |
1979 | { | |
1980 | done = false; | |
1981 | bb->aux = edge_predicate_pool.allocate (); | |
2d01bef2 | 1982 | *((ipa_predicate *) bb->aux) = p; |
27d020cf | 1983 | } |
2d01bef2 | 1984 | else if (p != *(ipa_predicate *) bb->aux) |
27d020cf JH |
1985 | { |
1986 | /* This OR operation is needed to ensure monotonous data flow | |
1987 | in the case we hit the limit on number of clauses and the | |
1988 | and/or operations above give approximate answers. */ | |
2d01bef2 ML |
1989 | p = p.or_with (summary->conds, *(ipa_predicate *)bb->aux); |
1990 | if (p != *(ipa_predicate *)bb->aux) | |
27d020cf JH |
1991 | { |
1992 | done = false; | |
2d01bef2 | 1993 | *((ipa_predicate *)bb->aux) = p; |
27d020cf JH |
1994 | } |
1995 | } | |
efe12656 FX |
1996 | |
1997 | /* For switch/if statement, we can OR-combine predicates of all | |
1998 | its cases/branches to get predicate for basic block in their | |
1999 | convergence point, but sometimes this will generate very | |
2000 | complicated predicate. Actually, we can get simplified | |
2001 | predicate in another way by using the fact that predicate | |
2002 | for a basic block must also hold true for its post dominators. | |
2003 | To be specific, basic block in convergence point of | |
2004 | conditional statement should include predicate of the | |
2005 | statement. */ | |
2006 | pdom_bb = get_immediate_dominator (CDI_POST_DOMINATORS, bb); | |
2007 | if (pdom_bb == EXIT_BLOCK_PTR_FOR_FN (my_function) || !pdom_bb) | |
2008 | ; | |
2009 | else if (!pdom_bb->aux) | |
2010 | { | |
2011 | done = false; | |
2012 | pdom_bb->aux = edge_predicate_pool.allocate (); | |
2d01bef2 | 2013 | *((ipa_predicate *)pdom_bb->aux) = p; |
efe12656 | 2014 | } |
2d01bef2 | 2015 | else if (p != *(ipa_predicate *)pdom_bb->aux) |
efe12656 | 2016 | { |
2d01bef2 ML |
2017 | p = p.or_with (summary->conds, |
2018 | *(ipa_predicate *)pdom_bb->aux); | |
2019 | if (p != *(ipa_predicate *)pdom_bb->aux) | |
efe12656 FX |
2020 | { |
2021 | done = false; | |
2d01bef2 | 2022 | *((ipa_predicate *)pdom_bb->aux) = p; |
efe12656 FX |
2023 | } |
2024 | } | |
27d020cf JH |
2025 | } |
2026 | } | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | ||
2031 | /* Return predicate specifying when the STMT might have result that is not | |
2032 | a compile time constant. */ | |
2033 | ||
2d01bef2 | 2034 | static ipa_predicate |
c628d1c3 | 2035 | will_be_nonconstant_expr_predicate (ipa_func_body_info *fbi, |
99b1c316 | 2036 | class ipa_fn_summary *summary, |
40a777e8 | 2037 | class ipa_node_params *params_summary, |
27d020cf | 2038 | tree expr, |
2d01bef2 | 2039 | vec<ipa_predicate> nonconstant_names) |
27d020cf JH |
2040 | { |
2041 | tree parm; | |
2042 | int index; | |
27d020cf JH |
2043 | |
2044 | while (UNARY_CLASS_P (expr)) | |
2045 | expr = TREE_OPERAND (expr, 0); | |
2046 | ||
4307a485 | 2047 | parm = unmodified_parm (fbi, NULL, expr, NULL); |
c628d1c3 | 2048 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) |
40a777e8 | 2049 | return add_condition (summary, params_summary, index, TREE_TYPE (parm), NULL, |
2d01bef2 | 2050 | ipa_predicate::changed, NULL_TREE); |
27d020cf JH |
2051 | if (is_gimple_min_invariant (expr)) |
2052 | return false; | |
2053 | if (TREE_CODE (expr) == SSA_NAME) | |
2054 | return nonconstant_names[SSA_NAME_VERSION (expr)]; | |
2055 | if (BINARY_CLASS_P (expr) || COMPARISON_CLASS_P (expr)) | |
2056 | { | |
2d01bef2 | 2057 | ipa_predicate p1 |
c628d1c3 | 2058 | = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 2059 | params_summary, |
c628d1c3 MJ |
2060 | TREE_OPERAND (expr, 0), |
2061 | nonconstant_names); | |
27d020cf JH |
2062 | if (p1 == true) |
2063 | return p1; | |
2064 | ||
2d01bef2 | 2065 | ipa_predicate p2 |
c628d1c3 | 2066 | = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 2067 | params_summary, |
c628d1c3 MJ |
2068 | TREE_OPERAND (expr, 1), |
2069 | nonconstant_names); | |
27d020cf JH |
2070 | return p1.or_with (summary->conds, p2); |
2071 | } | |
2072 | else if (TREE_CODE (expr) == COND_EXPR) | |
2073 | { | |
2d01bef2 | 2074 | ipa_predicate p1 |
c628d1c3 | 2075 | = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 2076 | params_summary, |
c628d1c3 MJ |
2077 | TREE_OPERAND (expr, 0), |
2078 | nonconstant_names); | |
27d020cf JH |
2079 | if (p1 == true) |
2080 | return p1; | |
2081 | ||
2d01bef2 | 2082 | ipa_predicate p2 |
c628d1c3 | 2083 | = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 2084 | params_summary, |
c628d1c3 MJ |
2085 | TREE_OPERAND (expr, 1), |
2086 | nonconstant_names); | |
27d020cf JH |
2087 | if (p2 == true) |
2088 | return p2; | |
2089 | p1 = p1.or_with (summary->conds, p2); | |
c628d1c3 | 2090 | p2 = will_be_nonconstant_expr_predicate (fbi, summary, |
40a777e8 | 2091 | params_summary, |
27d020cf JH |
2092 | TREE_OPERAND (expr, 2), |
2093 | nonconstant_names); | |
2094 | return p2.or_with (summary->conds, p1); | |
2095 | } | |
5126ae0c KV |
2096 | else if (TREE_CODE (expr) == CALL_EXPR) |
2097 | return true; | |
27d020cf JH |
2098 | else |
2099 | { | |
2100 | debug_tree (expr); | |
2101 | gcc_unreachable (); | |
2102 | } | |
27d020cf JH |
2103 | } |
2104 | ||
2105 | ||
2106 | /* Return predicate specifying when the STMT might have result that is not | |
2107 | a compile time constant. */ | |
2108 | ||
2d01bef2 | 2109 | static ipa_predicate |
27d020cf | 2110 | will_be_nonconstant_predicate (struct ipa_func_body_info *fbi, |
99b1c316 | 2111 | class ipa_fn_summary *summary, |
40a777e8 | 2112 | class ipa_node_params *params_summary, |
27d020cf | 2113 | gimple *stmt, |
2d01bef2 | 2114 | vec<ipa_predicate> nonconstant_names) |
27d020cf | 2115 | { |
2d01bef2 | 2116 | ipa_predicate p = true; |
27d020cf JH |
2117 | ssa_op_iter iter; |
2118 | tree use; | |
4307a485 | 2119 | tree param_type = NULL_TREE; |
2d01bef2 | 2120 | ipa_predicate op_non_const; |
27d020cf JH |
2121 | bool is_load; |
2122 | int base_index; | |
27d020cf JH |
2123 | struct agg_position_info aggpos; |
2124 | ||
956d615d | 2125 | /* What statements might be optimized away |
27d020cf JH |
2126 | when their arguments are constant. */ |
2127 | if (gimple_code (stmt) != GIMPLE_ASSIGN | |
2128 | && gimple_code (stmt) != GIMPLE_COND | |
2129 | && gimple_code (stmt) != GIMPLE_SWITCH | |
2130 | && (gimple_code (stmt) != GIMPLE_CALL | |
2131 | || !(gimple_call_flags (stmt) & ECF_CONST))) | |
2132 | return p; | |
2133 | ||
2134 | /* Stores will stay anyway. */ | |
2135 | if (gimple_store_p (stmt)) | |
2136 | return p; | |
2137 | ||
2138 | is_load = gimple_assign_load_p (stmt); | |
2139 | ||
2140 | /* Loads can be optimized when the value is known. */ | |
2141 | if (is_load) | |
2142 | { | |
4307a485 FX |
2143 | tree op = gimple_assign_rhs1 (stmt); |
2144 | if (!decompose_param_expr (fbi, stmt, op, &base_index, ¶m_type, | |
2145 | &aggpos)) | |
27d020cf JH |
2146 | return p; |
2147 | } | |
2148 | else | |
2149 | base_index = -1; | |
2150 | ||
2151 | /* See if we understand all operands before we start | |
2152 | adding conditionals. */ | |
2153 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
2154 | { | |
c628d1c3 | 2155 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
2156 | /* For arguments we can build a condition. */ |
2157 | if (parm && ipa_get_param_decl_index (fbi->info, parm) >= 0) | |
2158 | continue; | |
2159 | if (TREE_CODE (use) != SSA_NAME) | |
2160 | return p; | |
2161 | /* If we know when operand is constant, | |
2162 | we still can say something useful. */ | |
2163 | if (nonconstant_names[SSA_NAME_VERSION (use)] != true) | |
2164 | continue; | |
2165 | return p; | |
2166 | } | |
2167 | ||
2168 | if (is_load) | |
2169 | op_non_const = | |
40a777e8 JH |
2170 | add_condition (summary, params_summary, |
2171 | base_index, param_type, &aggpos, | |
2d01bef2 | 2172 | ipa_predicate::changed, NULL_TREE); |
27d020cf JH |
2173 | else |
2174 | op_non_const = false; | |
2175 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE) | |
2176 | { | |
4307a485 | 2177 | tree parm = unmodified_parm (fbi, stmt, use, NULL); |
27d020cf JH |
2178 | int index; |
2179 | ||
2180 | if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0) | |
2181 | { | |
2182 | if (index != base_index) | |
40a777e8 JH |
2183 | p = add_condition (summary, params_summary, index, |
2184 | TREE_TYPE (parm), NULL, | |
2d01bef2 | 2185 | ipa_predicate::changed, NULL_TREE); |
27d020cf JH |
2186 | else |
2187 | continue; | |
2188 | } | |
2189 | else | |
2190 | p = nonconstant_names[SSA_NAME_VERSION (use)]; | |
2191 | op_non_const = p.or_with (summary->conds, op_non_const); | |
2192 | } | |
2193 | if ((gimple_code (stmt) == GIMPLE_ASSIGN || gimple_code (stmt) == GIMPLE_CALL) | |
2194 | && gimple_op (stmt, 0) | |
2195 | && TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME) | |
2196 | nonconstant_names[SSA_NAME_VERSION (gimple_op (stmt, 0))] | |
2197 | = op_non_const; | |
2198 | return op_non_const; | |
2199 | } | |
2200 | ||
2201 | struct record_modified_bb_info | |
2202 | { | |
3b2a6901 | 2203 | tree op; |
27d020cf JH |
2204 | bitmap bb_set; |
2205 | gimple *stmt; | |
2206 | }; | |
2207 | ||
956d615d | 2208 | /* Value is initialized in INIT_BB and used in USE_BB. We want to compute |
27d020cf | 2209 | probability how often it changes between USE_BB. |
3b2a6901 | 2210 | INIT_BB->count/USE_BB->count is an estimate, but if INIT_BB |
27d020cf JH |
2211 | is in different loop nest, we can do better. |
2212 | This is all just estimate. In theory we look for minimal cut separating | |
2213 | INIT_BB and USE_BB, but we only want to anticipate loop invariant motion | |
2214 | anyway. */ | |
2215 | ||
2216 | static basic_block | |
2217 | get_minimal_bb (basic_block init_bb, basic_block use_bb) | |
2218 | { | |
99b1c316 | 2219 | class loop *l = find_common_loop (init_bb->loop_father, use_bb->loop_father); |
e7a74006 | 2220 | if (l && l->header->count < init_bb->count) |
27d020cf JH |
2221 | return l->header; |
2222 | return init_bb; | |
2223 | } | |
2224 | ||
2225 | /* Callback of walk_aliased_vdefs. Records basic blocks where the value may be | |
2226 | set except for info->stmt. */ | |
2227 | ||
2228 | static bool | |
2229 | record_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef, void *data) | |
2230 | { | |
2231 | struct record_modified_bb_info *info = | |
2232 | (struct record_modified_bb_info *) data; | |
2233 | if (SSA_NAME_DEF_STMT (vdef) == info->stmt) | |
2234 | return false; | |
3b2a6901 JH |
2235 | if (gimple_clobber_p (SSA_NAME_DEF_STMT (vdef))) |
2236 | return false; | |
27d020cf JH |
2237 | bitmap_set_bit (info->bb_set, |
2238 | SSA_NAME_IS_DEFAULT_DEF (vdef) | |
2239 | ? ENTRY_BLOCK_PTR_FOR_FN (cfun)->index | |
2240 | : get_minimal_bb | |
2241 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2242 | gimple_bb (info->stmt))->index); | |
3b2a6901 JH |
2243 | if (dump_file) |
2244 | { | |
2245 | fprintf (dump_file, " Param "); | |
2246 | print_generic_expr (dump_file, info->op, TDF_SLIM); | |
2247 | fprintf (dump_file, " changed at bb %i, minimal: %i stmt: ", | |
2248 | gimple_bb (SSA_NAME_DEF_STMT (vdef))->index, | |
2249 | get_minimal_bb | |
2250 | (gimple_bb (SSA_NAME_DEF_STMT (vdef)), | |
2251 | gimple_bb (info->stmt))->index); | |
2252 | print_gimple_stmt (dump_file, SSA_NAME_DEF_STMT (vdef), 0); | |
2253 | } | |
27d020cf JH |
2254 | return false; |
2255 | } | |
2256 | ||
2257 | /* Return probability (based on REG_BR_PROB_BASE) that I-th parameter of STMT | |
2258 | will change since last invocation of STMT. | |
2259 | ||
2260 | Value 0 is reserved for compile time invariants. | |
2261 | For common parameters it is REG_BR_PROB_BASE. For loop invariants it | |
2262 | ought to be REG_BR_PROB_BASE / estimated_iters. */ | |
2263 | ||
2264 | static int | |
c628d1c3 | 2265 | param_change_prob (ipa_func_body_info *fbi, gimple *stmt, int i) |
27d020cf JH |
2266 | { |
2267 | tree op = gimple_call_arg (stmt, i); | |
2268 | basic_block bb = gimple_bb (stmt); | |
2269 | ||
2270 | if (TREE_CODE (op) == WITH_SIZE_EXPR) | |
2271 | op = TREE_OPERAND (op, 0); | |
2272 | ||
2273 | tree base = get_base_address (op); | |
2274 | ||
2275 | /* Global invariants never change. */ | |
2276 | if (is_gimple_min_invariant (base)) | |
2277 | return 0; | |
2278 | ||
2279 | /* We would have to do non-trivial analysis to really work out what | |
2280 | is the probability of value to change (i.e. when init statement | |
2281 | is in a sibling loop of the call). | |
2282 | ||
2283 | We do an conservative estimate: when call is executed N times more often | |
2284 | than the statement defining value, we take the frequency 1/N. */ | |
2285 | if (TREE_CODE (base) == SSA_NAME) | |
2286 | { | |
3b2a6901 | 2287 | profile_count init_count; |
27d020cf | 2288 | |
3b2a6901 | 2289 | if (!bb->count.nonzero_p ()) |
27d020cf JH |
2290 | return REG_BR_PROB_BASE; |
2291 | ||
2292 | if (SSA_NAME_IS_DEFAULT_DEF (base)) | |
3b2a6901 | 2293 | init_count = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2294 | else |
3b2a6901 | 2295 | init_count = get_minimal_bb |
27d020cf | 2296 | (gimple_bb (SSA_NAME_DEF_STMT (base)), |
3b2a6901 | 2297 | gimple_bb (stmt))->count; |
27d020cf | 2298 | |
3b2a6901 JH |
2299 | if (init_count < bb->count) |
2300 | return MAX ((init_count.to_sreal_scale (bb->count) | |
2301 | * REG_BR_PROB_BASE).to_int (), 1); | |
2302 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2303 | } |
2304 | else | |
2305 | { | |
2306 | ao_ref refd; | |
3b2a6901 | 2307 | profile_count max = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf | 2308 | struct record_modified_bb_info info; |
27d020cf JH |
2309 | tree init = ctor_for_folding (base); |
2310 | ||
2311 | if (init != error_mark_node) | |
2312 | return 0; | |
6cc886bf | 2313 | if (!bb->count.nonzero_p () || fbi->aa_walk_budget == 0) |
27d020cf | 2314 | return REG_BR_PROB_BASE; |
3b2a6901 JH |
2315 | if (dump_file) |
2316 | { | |
4307a485 | 2317 | fprintf (dump_file, " Analyzing param change probability of "); |
3b2a6901 JH |
2318 | print_generic_expr (dump_file, op, TDF_SLIM); |
2319 | fprintf (dump_file, "\n"); | |
2320 | } | |
27d020cf | 2321 | ao_ref_init (&refd, op); |
3b2a6901 | 2322 | info.op = op; |
27d020cf JH |
2323 | info.stmt = stmt; |
2324 | info.bb_set = BITMAP_ALLOC (NULL); | |
c628d1c3 MJ |
2325 | int walked |
2326 | = walk_aliased_vdefs (&refd, gimple_vuse (stmt), record_modified, &info, | |
2327 | NULL, NULL, fbi->aa_walk_budget); | |
6cc886bf RB |
2328 | if (walked > 0) |
2329 | fbi->aa_walk_budget -= walked; | |
c628d1c3 | 2330 | if (walked < 0 || bitmap_bit_p (info.bb_set, bb->index)) |
27d020cf | 2331 | { |
6cc886bf RB |
2332 | if (walked < 0) |
2333 | fbi->aa_walk_budget = 0; | |
3b2a6901 | 2334 | if (dump_file) |
c628d1c3 MJ |
2335 | { |
2336 | if (walked < 0) | |
2337 | fprintf (dump_file, " Ran out of AA walking budget.\n"); | |
2338 | else | |
2339 | fprintf (dump_file, " Set in same BB as used.\n"); | |
2340 | } | |
27d020cf JH |
2341 | BITMAP_FREE (info.bb_set); |
2342 | return REG_BR_PROB_BASE; | |
2343 | } | |
2344 | ||
3b2a6901 JH |
2345 | bitmap_iterator bi; |
2346 | unsigned index; | |
2347 | /* Lookup the most frequent update of the value and believe that | |
2348 | it dominates all the other; precise analysis here is difficult. */ | |
27d020cf | 2349 | EXECUTE_IF_SET_IN_BITMAP (info.bb_set, 0, index, bi) |
3b2a6901 JH |
2350 | max = max.max (BASIC_BLOCK_FOR_FN (cfun, index)->count); |
2351 | if (dump_file) | |
2352 | { | |
2353 | fprintf (dump_file, " Set with count "); | |
2354 | max.dump (dump_file); | |
2355 | fprintf (dump_file, " and used with count "); | |
2356 | bb->count.dump (dump_file); | |
2357 | fprintf (dump_file, " freq %f\n", | |
2358 | max.to_sreal_scale (bb->count).to_double ()); | |
2359 | } | |
27d020cf JH |
2360 | |
2361 | BITMAP_FREE (info.bb_set); | |
3b2a6901 JH |
2362 | if (max < bb->count) |
2363 | return MAX ((max.to_sreal_scale (bb->count) | |
2364 | * REG_BR_PROB_BASE).to_int (), 1); | |
2365 | return REG_BR_PROB_BASE; | |
27d020cf JH |
2366 | } |
2367 | } | |
2368 | ||
2369 | /* Find whether a basic block BB is the final block of a (half) diamond CFG | |
2370 | sub-graph and if the predicate the condition depends on is known. If so, | |
2371 | return true and store the pointer the predicate in *P. */ | |
2372 | ||
2373 | static bool | |
c628d1c3 | 2374 | phi_result_unknown_predicate (ipa_func_body_info *fbi, |
40a777e8 JH |
2375 | ipa_fn_summary *summary, |
2376 | class ipa_node_params *params_summary, | |
2377 | basic_block bb, | |
2d01bef2 ML |
2378 | ipa_predicate *p, |
2379 | vec<ipa_predicate> nonconstant_names) | |
27d020cf JH |
2380 | { |
2381 | edge e; | |
2382 | edge_iterator ei; | |
2383 | basic_block first_bb = NULL; | |
27d020cf JH |
2384 | |
2385 | if (single_pred_p (bb)) | |
2386 | { | |
2387 | *p = false; | |
2388 | return true; | |
2389 | } | |
2390 | ||
2391 | FOR_EACH_EDGE (e, ei, bb->preds) | |
2392 | { | |
2393 | if (single_succ_p (e->src)) | |
2394 | { | |
2395 | if (!single_pred_p (e->src)) | |
2396 | return false; | |
2397 | if (!first_bb) | |
2398 | first_bb = single_pred (e->src); | |
2399 | else if (single_pred (e->src) != first_bb) | |
2400 | return false; | |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | if (!first_bb) | |
2405 | first_bb = e->src; | |
2406 | else if (e->src != first_bb) | |
2407 | return false; | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | if (!first_bb) | |
2412 | return false; | |
2413 | ||
60bf26a4 | 2414 | gcond *stmt = safe_dyn_cast <gcond *> (*gsi_last_bb (first_bb)); |
27d020cf | 2415 | if (!stmt |
27d020cf JH |
2416 | || !is_gimple_ip_invariant (gimple_cond_rhs (stmt))) |
2417 | return false; | |
2418 | ||
40a777e8 | 2419 | *p = will_be_nonconstant_expr_predicate (fbi, summary, params_summary, |
27d020cf JH |
2420 | gimple_cond_lhs (stmt), |
2421 | nonconstant_names); | |
2422 | if (*p == true) | |
2423 | return false; | |
2424 | else | |
2425 | return true; | |
2426 | } | |
2427 | ||
2428 | /* Given a PHI statement in a function described by inline properties SUMMARY | |
2429 | and *P being the predicate describing whether the selected PHI argument is | |
2430 | known, store a predicate for the result of the PHI statement into | |
2431 | NONCONSTANT_NAMES, if possible. */ | |
2432 | ||
2433 | static void | |
99b1c316 | 2434 | predicate_for_phi_result (class ipa_fn_summary *summary, gphi *phi, |
2d01bef2 ML |
2435 | ipa_predicate *p, |
2436 | vec<ipa_predicate> nonconstant_names) | |
27d020cf JH |
2437 | { |
2438 | unsigned i; | |
2439 | ||
2440 | for (i = 0; i < gimple_phi_num_args (phi); i++) | |
2441 | { | |
2442 | tree arg = gimple_phi_arg (phi, i)->def; | |
2443 | if (!is_gimple_min_invariant (arg)) | |
2444 | { | |
2445 | gcc_assert (TREE_CODE (arg) == SSA_NAME); | |
2446 | *p = p->or_with (summary->conds, | |
2447 | nonconstant_names[SSA_NAME_VERSION (arg)]); | |
2448 | if (*p == true) | |
2449 | return; | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2454 | { | |
2455 | fprintf (dump_file, "\t\tphi predicate: "); | |
2456 | p->dump (dump_file, summary->conds); | |
2457 | } | |
2458 | nonconstant_names[SSA_NAME_VERSION (gimple_phi_result (phi))] = *p; | |
2459 | } | |
2460 | ||
27d020cf JH |
2461 | /* For a typical usage of __builtin_expect (a<b, 1), we |
2462 | may introduce an extra relation stmt: | |
2463 | With the builtin, we have | |
2464 | t1 = a <= b; | |
2465 | t2 = (long int) t1; | |
2466 | t3 = __builtin_expect (t2, 1); | |
2467 | if (t3 != 0) | |
2468 | goto ... | |
2469 | Without the builtin, we have | |
2470 | if (a<=b) | |
2471 | goto... | |
2472 | This affects the size/time estimation and may have | |
2473 | an impact on the earlier inlining. | |
2474 | Here find this pattern and fix it up later. */ | |
2475 | ||
2476 | static gimple * | |
2477 | find_foldable_builtin_expect (basic_block bb) | |
2478 | { | |
2479 | gimple_stmt_iterator bsi; | |
2480 | ||
2481 | for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
2482 | { | |
2483 | gimple *stmt = gsi_stmt (bsi); | |
2484 | if (gimple_call_builtin_p (stmt, BUILT_IN_EXPECT) | |
1e9168b2 | 2485 | || gimple_call_builtin_p (stmt, BUILT_IN_EXPECT_WITH_PROBABILITY) |
27d020cf JH |
2486 | || gimple_call_internal_p (stmt, IFN_BUILTIN_EXPECT)) |
2487 | { | |
2488 | tree var = gimple_call_lhs (stmt); | |
2489 | tree arg = gimple_call_arg (stmt, 0); | |
2490 | use_operand_p use_p; | |
2491 | gimple *use_stmt; | |
2492 | bool match = false; | |
2493 | bool done = false; | |
2494 | ||
2495 | if (!var || !arg) | |
2496 | continue; | |
2497 | gcc_assert (TREE_CODE (var) == SSA_NAME); | |
2498 | ||
2499 | while (TREE_CODE (arg) == SSA_NAME) | |
2500 | { | |
2501 | gimple *stmt_tmp = SSA_NAME_DEF_STMT (arg); | |
2502 | if (!is_gimple_assign (stmt_tmp)) | |
2503 | break; | |
2504 | switch (gimple_assign_rhs_code (stmt_tmp)) | |
2505 | { | |
2506 | case LT_EXPR: | |
2507 | case LE_EXPR: | |
2508 | case GT_EXPR: | |
2509 | case GE_EXPR: | |
2510 | case EQ_EXPR: | |
2511 | case NE_EXPR: | |
2512 | match = true; | |
2513 | done = true; | |
2514 | break; | |
2515 | CASE_CONVERT: | |
2516 | break; | |
2517 | default: | |
2518 | done = true; | |
2519 | break; | |
2520 | } | |
2521 | if (done) | |
2522 | break; | |
2523 | arg = gimple_assign_rhs1 (stmt_tmp); | |
2524 | } | |
2525 | ||
2526 | if (match && single_imm_use (var, &use_p, &use_stmt) | |
2527 | && gimple_code (use_stmt) == GIMPLE_COND) | |
2528 | return use_stmt; | |
2529 | } | |
2530 | } | |
2531 | return NULL; | |
2532 | } | |
2533 | ||
2534 | /* Return true when the basic blocks contains only clobbers followed by RESX. | |
2535 | Such BBs are kept around to make removal of dead stores possible with | |
2536 | presence of EH and will be optimized out by optimize_clobbers later in the | |
2537 | game. | |
2538 | ||
956d615d | 2539 | NEED_EH is used to recurse in case the clobber has non-EH predecessors |
27d020cf JH |
2540 | that can be clobber only, too.. When it is false, the RESX is not necessary |
2541 | on the end of basic block. */ | |
2542 | ||
2543 | static bool | |
2544 | clobber_only_eh_bb_p (basic_block bb, bool need_eh = true) | |
2545 | { | |
2546 | gimple_stmt_iterator gsi = gsi_last_bb (bb); | |
2547 | edge_iterator ei; | |
2548 | edge e; | |
2549 | ||
2550 | if (need_eh) | |
2551 | { | |
2552 | if (gsi_end_p (gsi)) | |
2553 | return false; | |
2554 | if (gimple_code (gsi_stmt (gsi)) != GIMPLE_RESX) | |
2555 | return false; | |
2556 | gsi_prev (&gsi); | |
2557 | } | |
2558 | else if (!single_succ_p (bb)) | |
2559 | return false; | |
2560 | ||
2561 | for (; !gsi_end_p (gsi); gsi_prev (&gsi)) | |
2562 | { | |
2563 | gimple *stmt = gsi_stmt (gsi); | |
2564 | if (is_gimple_debug (stmt)) | |
2565 | continue; | |
2566 | if (gimple_clobber_p (stmt)) | |
2567 | continue; | |
2568 | if (gimple_code (stmt) == GIMPLE_LABEL) | |
2569 | break; | |
2570 | return false; | |
2571 | } | |
2572 | ||
956d615d | 2573 | /* See if all predecessors are either throws or clobber only BBs. */ |
27d020cf JH |
2574 | FOR_EACH_EDGE (e, ei, bb->preds) |
2575 | if (!(e->flags & EDGE_EH) | |
2576 | && !clobber_only_eh_bb_p (e->src, false)) | |
2577 | return false; | |
2578 | ||
2579 | return true; | |
2580 | } | |
2581 | ||
2582 | /* Return true if STMT compute a floating point expression that may be affected | |
2583 | by -ffast-math and similar flags. */ | |
2584 | ||
2585 | static bool | |
2586 | fp_expression_p (gimple *stmt) | |
2587 | { | |
2588 | ssa_op_iter i; | |
2589 | tree op; | |
2590 | ||
2591 | FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_DEF|SSA_OP_USE) | |
2592 | if (FLOAT_TYPE_P (TREE_TYPE (op))) | |
2593 | return true; | |
2594 | return false; | |
2595 | } | |
2596 | ||
e977dd5e JH |
2597 | /* Return true if T references memory location that is local |
2598 | for the function (that means, dead after return) or read-only. */ | |
2599 | ||
2600 | bool | |
2601 | refs_local_or_readonly_memory_p (tree t) | |
2602 | { | |
2603 | /* Non-escaping memory is fine. */ | |
2604 | t = get_base_address (t); | |
2605 | if ((TREE_CODE (t) == MEM_REF | |
2606 | || TREE_CODE (t) == TARGET_MEM_REF)) | |
2607 | return points_to_local_or_readonly_memory_p (TREE_OPERAND (t, 0)); | |
2608 | ||
2609 | /* Automatic variables are fine. */ | |
2610 | if (DECL_P (t) | |
2611 | && auto_var_in_fn_p (t, current_function_decl)) | |
2612 | return true; | |
2613 | ||
2614 | /* Read-only variables are fine. */ | |
2615 | if (DECL_P (t) && TREE_READONLY (t)) | |
2616 | return true; | |
2617 | ||
2618 | return false; | |
2619 | } | |
2620 | ||
2621 | /* Return true if T is a pointer pointing to memory location that is local | |
2622 | for the function (that means, dead after return) or read-only. */ | |
2623 | ||
2624 | bool | |
2625 | points_to_local_or_readonly_memory_p (tree t) | |
2626 | { | |
2627 | /* See if memory location is clearly invalid. */ | |
2628 | if (integer_zerop (t)) | |
2629 | return flag_delete_null_pointer_checks; | |
2630 | if (TREE_CODE (t) == SSA_NAME) | |
ca84f393 JH |
2631 | { |
2632 | /* For IPA passes we can consinder accesses to return slot local | |
2633 | even if it is not local in the sense that memory is dead by | |
2634 | the end of founction. | |
2635 | The outer function will see a store in the call assignment | |
2636 | and thus this will do right thing for all uses of this | |
2637 | function in the current IPA passes (modref, pure/const discovery | |
2638 | and inlining heuristics). */ | |
2639 | if (DECL_RESULT (current_function_decl) | |
2640 | && DECL_BY_REFERENCE (DECL_RESULT (current_function_decl)) | |
2641 | && t == ssa_default_def (cfun, DECL_RESULT (current_function_decl))) | |
2642 | return true; | |
8c0ebaf9 | 2643 | return !ptr_deref_may_alias_global_p (t, false); |
ca84f393 | 2644 | } |
e977dd5e JH |
2645 | if (TREE_CODE (t) == ADDR_EXPR) |
2646 | return refs_local_or_readonly_memory_p (TREE_OPERAND (t, 0)); | |
2647 | return false; | |
2648 | } | |
2649 | ||
5a1ef1cf H |
2650 | /* Return true if T is a pointer pointing to memory location that is possible |
2651 | sra candidate if all functions it is passed to are inlined. */ | |
2652 | ||
2653 | static bool | |
2654 | points_to_possible_sra_candidate_p (tree t) | |
2655 | { | |
2656 | if (TREE_CODE (t) != ADDR_EXPR) | |
2657 | return false; | |
2658 | ||
2659 | t = get_base_address (TREE_OPERAND (t, 0)); | |
2660 | ||
2661 | /* Automatic variables are fine. */ | |
2662 | if (DECL_P (t) | |
2663 | && auto_var_in_fn_p (t, current_function_decl)) | |
2664 | return true; | |
2665 | return false; | |
2666 | } | |
e977dd5e | 2667 | |
0bceb671 JH |
2668 | /* Analyze function body for NODE. |
2669 | EARLY indicates run from early optimization pipeline. */ | |
27d020cf JH |
2670 | |
2671 | static void | |
0bceb671 | 2672 | analyze_function_body (struct cgraph_node *node, bool early) |
27d020cf | 2673 | { |
9340d345 | 2674 | sreal time = opt_for_fn (node->decl, param_uninlined_function_time); |
27d020cf | 2675 | /* Estimate static overhead for function prologue/epilogue and alignment. */ |
9340d345 | 2676 | int size = opt_for_fn (node->decl, param_uninlined_function_insns); |
27d020cf JH |
2677 | /* Benefits are scaled by probability of elimination that is in range |
2678 | <0,2>. */ | |
2679 | basic_block bb; | |
2680 | struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); | |
b71289b1 | 2681 | sreal freq; |
99b1c316 | 2682 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
a4a3cdd0 MJ |
2683 | ipa_node_params *params_summary |
2684 | = early ? NULL : ipa_node_params_sum->get (node); | |
2d01bef2 | 2685 | ipa_predicate bb_predicate; |
27d020cf | 2686 | struct ipa_func_body_info fbi; |
2d01bef2 | 2687 | vec<ipa_predicate> nonconstant_names = vNULL; |
27d020cf JH |
2688 | int nblocks, n; |
2689 | int *order; | |
27d020cf JH |
2690 | gimple *fix_builtin_expect_stmt; |
2691 | ||
2692 | gcc_assert (my_function && my_function->cfg); | |
2693 | gcc_assert (cfun == my_function); | |
2694 | ||
2695 | memset(&fbi, 0, sizeof(fbi)); | |
ddfb1317 | 2696 | vec_free (info->conds); |
27d020cf | 2697 | info->conds = NULL; |
366099ff JH |
2698 | info->size_time_table.release (); |
2699 | info->call_size_time_table.release (); | |
27d020cf JH |
2700 | |
2701 | /* When optimizing and analyzing for IPA inliner, initialize loop optimizer | |
2702 | so we can produce proper inline hints. | |
2703 | ||
2704 | When optimizing and analyzing for early inliner, initialize node params | |
2705 | so we can produce correct BB predicates. */ | |
2706 | ||
2707 | if (opt_for_fn (node->decl, optimize)) | |
2708 | { | |
2709 | calculate_dominance_info (CDI_DOMINATORS); | |
efe12656 | 2710 | calculate_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
2711 | if (!early) |
2712 | loop_optimizer_init (LOOPS_NORMAL | LOOPS_HAVE_RECORDED_EXITS); | |
2713 | else | |
2714 | { | |
2715 | ipa_check_create_node_params (); | |
2716 | ipa_initialize_node_params (node); | |
2717 | } | |
2718 | ||
2719 | if (ipa_node_params_sum) | |
2720 | { | |
2721 | fbi.node = node; | |
a4a3cdd0 | 2722 | fbi.info = ipa_node_params_sum->get (node); |
27d020cf | 2723 | fbi.bb_infos = vNULL; |
cb3874dc | 2724 | fbi.bb_infos.safe_grow_cleared (last_basic_block_for_fn (cfun), true); |
c628d1c3 | 2725 | fbi.param_count = count_formal_params (node->decl); |
fdfd7f53 | 2726 | fbi.aa_walk_budget = opt_for_fn (node->decl, param_ipa_max_aa_steps); |
c628d1c3 | 2727 | |
27d020cf | 2728 | nonconstant_names.safe_grow_cleared |
cb3874dc | 2729 | (SSANAMES (my_function)->length (), true); |
27d020cf JH |
2730 | } |
2731 | } | |
2732 | ||
2733 | if (dump_file) | |
2734 | fprintf (dump_file, "\nAnalyzing function body size: %s\n", | |
3629ff8a | 2735 | node->dump_name ()); |
27d020cf JH |
2736 | |
2737 | /* When we run into maximal number of entries, we assign everything to the | |
2738 | constant truth case. Be sure to have it in list. */ | |
2739 | bb_predicate = true; | |
2740 | info->account_size_time (0, 0, bb_predicate, bb_predicate); | |
2741 | ||
2d01bef2 | 2742 | bb_predicate = ipa_predicate::not_inlined (); |
9340d345 JH |
2743 | info->account_size_time (opt_for_fn (node->decl, |
2744 | param_uninlined_function_insns) | |
d06f73a3 | 2745 | * ipa_fn_summary::size_scale, |
9340d345 JH |
2746 | opt_for_fn (node->decl, |
2747 | param_uninlined_function_time), | |
d06f73a3 | 2748 | bb_predicate, |
27d020cf JH |
2749 | bb_predicate); |
2750 | ||
0fc60c18 KL |
2751 | /* Only look for target information for inlinable functions. */ |
2752 | bool scan_for_target_info = | |
2753 | info->inlinable | |
2754 | && targetm.target_option.need_ipa_fn_target_info (node->decl, | |
2755 | info->target_info); | |
2756 | ||
27d020cf | 2757 | if (fbi.info) |
40a777e8 | 2758 | compute_bb_predicates (&fbi, node, info, params_summary); |
67ce9099 | 2759 | const profile_count entry_count = ENTRY_BLOCK_PTR_FOR_FN (cfun)->count; |
27d020cf JH |
2760 | order = XNEWVEC (int, n_basic_blocks_for_fn (cfun)); |
2761 | nblocks = pre_and_rev_post_order_compute (NULL, order, false); | |
2762 | for (n = 0; n < nblocks; n++) | |
2763 | { | |
2764 | bb = BASIC_BLOCK_FOR_FN (cfun, order[n]); | |
67ce9099 | 2765 | freq = bb->count.to_sreal_scale (entry_count); |
27d020cf JH |
2766 | if (clobber_only_eh_bb_p (bb)) |
2767 | { | |
2768 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2769 | fprintf (dump_file, "\n Ignoring BB %i;" | |
2770 | " it will be optimized away by cleanup_clobbers\n", | |
2771 | bb->index); | |
2772 | continue; | |
2773 | } | |
2774 | ||
2775 | /* TODO: Obviously predicates can be propagated down across CFG. */ | |
2776 | if (fbi.info) | |
2777 | { | |
2778 | if (bb->aux) | |
2d01bef2 | 2779 | bb_predicate = *(ipa_predicate *)bb->aux; |
27d020cf JH |
2780 | else |
2781 | bb_predicate = false; | |
2782 | } | |
2783 | else | |
2784 | bb_predicate = true; | |
2785 | ||
2786 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2787 | { | |
2788 | fprintf (dump_file, "\n BB %i predicate:", bb->index); | |
2789 | bb_predicate.dump (dump_file, info->conds); | |
2790 | } | |
2791 | ||
2792 | if (fbi.info && nonconstant_names.exists ()) | |
2793 | { | |
2d01bef2 | 2794 | ipa_predicate phi_predicate; |
27d020cf JH |
2795 | bool first_phi = true; |
2796 | ||
2797 | for (gphi_iterator bsi = gsi_start_phis (bb); !gsi_end_p (bsi); | |
2798 | gsi_next (&bsi)) | |
2799 | { | |
2800 | if (first_phi | |
40a777e8 JH |
2801 | && !phi_result_unknown_predicate (&fbi, info, |
2802 | params_summary, | |
2803 | bb, | |
27d020cf JH |
2804 | &phi_predicate, |
2805 | nonconstant_names)) | |
2806 | break; | |
2807 | first_phi = false; | |
2808 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2809 | { | |
2810 | fprintf (dump_file, " "); | |
2811 | print_gimple_stmt (dump_file, gsi_stmt (bsi), 0); | |
2812 | } | |
2813 | predicate_for_phi_result (info, bsi.phi (), &phi_predicate, | |
2814 | nonconstant_names); | |
2815 | } | |
2816 | } | |
2817 | ||
2818 | fix_builtin_expect_stmt = find_foldable_builtin_expect (bb); | |
2819 | ||
d3ed5b56 JH |
2820 | for (gimple_stmt_iterator bsi = gsi_start_nondebug_bb (bb); |
2821 | !gsi_end_p (bsi); gsi_next_nondebug (&bsi)) | |
27d020cf JH |
2822 | { |
2823 | gimple *stmt = gsi_stmt (bsi); | |
2824 | int this_size = estimate_num_insns (stmt, &eni_size_weights); | |
2825 | int this_time = estimate_num_insns (stmt, &eni_time_weights); | |
2826 | int prob; | |
2d01bef2 | 2827 | ipa_predicate will_be_nonconstant; |
27d020cf JH |
2828 | |
2829 | /* This relation stmt should be folded after we remove | |
956d615d | 2830 | __builtin_expect call. Adjust the cost here. */ |
27d020cf JH |
2831 | if (stmt == fix_builtin_expect_stmt) |
2832 | { | |
2833 | this_size--; | |
2834 | this_time--; | |
2835 | } | |
2836 | ||
2837 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
2838 | { | |
2839 | fprintf (dump_file, " "); | |
2840 | print_gimple_stmt (dump_file, stmt, 0); | |
2841 | fprintf (dump_file, "\t\tfreq:%3.2f size:%3i time:%3i\n", | |
b71289b1 | 2842 | freq.to_double (), this_size, |
27d020cf JH |
2843 | this_time); |
2844 | } | |
2845 | ||
27d020cf JH |
2846 | if (is_gimple_call (stmt) |
2847 | && !gimple_call_internal_p (stmt)) | |
2848 | { | |
2849 | struct cgraph_edge *edge = node->get_edge (stmt); | |
99353fcf | 2850 | ipa_call_summary *es = ipa_call_summaries->get_create (edge); |
27d020cf JH |
2851 | |
2852 | /* Special case: results of BUILT_IN_CONSTANT_P will be always | |
2853 | resolved as constant. We however don't want to optimize | |
2854 | out the cgraph edges. */ | |
2855 | if (nonconstant_names.exists () | |
2856 | && gimple_call_builtin_p (stmt, BUILT_IN_CONSTANT_P) | |
2857 | && gimple_call_lhs (stmt) | |
2858 | && TREE_CODE (gimple_call_lhs (stmt)) == SSA_NAME) | |
2859 | { | |
2d01bef2 | 2860 | ipa_predicate false_p = false; |
27d020cf JH |
2861 | nonconstant_names[SSA_NAME_VERSION (gimple_call_lhs (stmt))] |
2862 | = false_p; | |
2863 | } | |
2864 | if (ipa_node_params_sum) | |
2865 | { | |
2866 | int count = gimple_call_num_args (stmt); | |
2867 | int i; | |
2868 | ||
2869 | if (count) | |
cb3874dc | 2870 | es->param.safe_grow_cleared (count, true); |
27d020cf JH |
2871 | for (i = 0; i < count; i++) |
2872 | { | |
c628d1c3 | 2873 | int prob = param_change_prob (&fbi, stmt, i); |
27d020cf JH |
2874 | gcc_assert (prob >= 0 && prob <= REG_BR_PROB_BASE); |
2875 | es->param[i].change_prob = prob; | |
b89e4559 JH |
2876 | es->param[i].points_to_local_or_readonly_memory |
2877 | = points_to_local_or_readonly_memory_p | |
2878 | (gimple_call_arg (stmt, i)); | |
5a1ef1cf H |
2879 | es->param[i].points_to_possible_sra_candidate |
2880 | = points_to_possible_sra_candidate_p | |
2881 | (gimple_call_arg (stmt, i)); | |
27d020cf JH |
2882 | } |
2883 | } | |
7ee164dc RB |
2884 | /* We cannot setup VLA parameters during inlining. */ |
2885 | for (unsigned int i = 0; i < gimple_call_num_args (stmt); ++i) | |
2886 | if (TREE_CODE (gimple_call_arg (stmt, i)) == WITH_SIZE_EXPR) | |
2887 | { | |
2888 | edge->inline_failed = CIF_FUNCTION_NOT_INLINABLE; | |
2889 | break; | |
2890 | } | |
27d020cf JH |
2891 | es->call_stmt_size = this_size; |
2892 | es->call_stmt_time = this_time; | |
2893 | es->loop_depth = bb_loop_depth (bb); | |
2894 | edge_set_predicate (edge, &bb_predicate); | |
959b8c82 JH |
2895 | if (edge->speculative) |
2896 | { | |
845bb366 JH |
2897 | cgraph_edge *indirect |
2898 | = edge->speculative_call_indirect_edge (); | |
959b8c82 | 2899 | ipa_call_summary *es2 |
d380e329 | 2900 | = ipa_call_summaries->get_create (indirect); |
959b8c82 JH |
2901 | ipa_call_summaries->duplicate (edge, indirect, |
2902 | es, es2); | |
f1ba88b1 | 2903 | |
845bb366 JH |
2904 | /* Edge is the first direct call. |
2905 | create and duplicate call summaries for multiple | |
f1ba88b1 | 2906 | speculative call targets. */ |
845bb366 JH |
2907 | for (cgraph_edge *direct |
2908 | = edge->next_speculative_call_target (); | |
2909 | direct; | |
2910 | direct = direct->next_speculative_call_target ()) | |
2911 | { | |
2912 | ipa_call_summary *es3 | |
2913 | = ipa_call_summaries->get_create (direct); | |
2914 | ipa_call_summaries->duplicate (edge, direct, | |
2915 | es, es3); | |
2916 | } | |
959b8c82 | 2917 | } |
27d020cf JH |
2918 | } |
2919 | ||
956d615d | 2920 | /* TODO: When conditional jump or switch is known to be constant, but |
27d020cf JH |
2921 | we did not translate it into the predicates, we really can account |
2922 | just maximum of the possible paths. */ | |
2923 | if (fbi.info) | |
2924 | will_be_nonconstant | |
40a777e8 | 2925 | = will_be_nonconstant_predicate (&fbi, info, params_summary, |
27d020cf JH |
2926 | stmt, nonconstant_names); |
2927 | else | |
2928 | will_be_nonconstant = true; | |
2929 | if (this_time || this_size) | |
2930 | { | |
b71289b1 | 2931 | sreal final_time = (sreal)this_time * freq; |
c628d1c3 | 2932 | prob = eliminated_by_inlining_prob (&fbi, stmt); |
27d020cf JH |
2933 | if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS)) |
2934 | fprintf (dump_file, | |
2935 | "\t\t50%% will be eliminated by inlining\n"); | |
2936 | if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS)) | |
2937 | fprintf (dump_file, "\t\tWill be eliminated by inlining\n"); | |
2938 | ||
2d01bef2 | 2939 | ipa_predicate p = bb_predicate & will_be_nonconstant; |
5a1ef1cf H |
2940 | int parm = load_or_store_of_ptr_parameter (&fbi, stmt); |
2941 | ipa_predicate sra_predicate = true; | |
2942 | if (parm != -1) | |
2943 | sra_predicate &= add_condition (info, params_summary, parm, | |
2944 | ptr_type_node, NULL, | |
2945 | ipa_predicate::not_sra_candidate, NULL, 0); | |
27d020cf JH |
2946 | |
2947 | /* We can ignore statement when we proved it is never going | |
67914693 | 2948 | to happen, but we cannot do that for call statements |
27d020cf JH |
2949 | because edges are accounted specially. */ |
2950 | ||
2951 | if (*(is_gimple_call (stmt) ? &bb_predicate : &p) != false) | |
2952 | { | |
b71289b1 | 2953 | time += final_time; |
27d020cf JH |
2954 | size += this_size; |
2955 | } | |
2956 | ||
2957 | /* We account everything but the calls. Calls have their own | |
2958 | size/time info attached to cgraph edges. This is necessary | |
2959 | in order to make the cost disappear after inlining. */ | |
2960 | if (!is_gimple_call (stmt)) | |
2961 | { | |
2962 | if (prob) | |
2963 | { | |
2d01bef2 | 2964 | ipa_predicate ip |
5a1ef1cf | 2965 | = bb_predicate & ipa_predicate::not_inlined () & sra_predicate; |
27d020cf | 2966 | info->account_size_time (this_size * prob, |
121356b0 | 2967 | (final_time * prob) / 2, ip, |
27d020cf JH |
2968 | p); |
2969 | } | |
2970 | if (prob != 2) | |
2971 | info->account_size_time (this_size * (2 - prob), | |
121356b0 | 2972 | (final_time * (2 - prob) / 2), |
5a1ef1cf | 2973 | bb_predicate & sra_predicate, |
27d020cf JH |
2974 | p); |
2975 | } | |
2976 | ||
2977 | if (!info->fp_expressions && fp_expression_p (stmt)) | |
2978 | { | |
2979 | info->fp_expressions = true; | |
2980 | if (dump_file) | |
2981 | fprintf (dump_file, " fp_expression set\n"); | |
2982 | } | |
a20f263b | 2983 | } |
27d020cf | 2984 | |
0fc60c18 KL |
2985 | /* For target specific information, we want to scan all statements |
2986 | rather than those statements with non-zero weights, to avoid | |
2987 | missing to scan something interesting for target information, | |
2988 | such as: internal function calls. */ | |
2989 | if (scan_for_target_info) | |
2990 | scan_for_target_info = | |
2991 | targetm.target_option.update_ipa_fn_target_info | |
2992 | (info->target_info, stmt); | |
2993 | ||
a20f263b JH |
2994 | /* Account cost of address calculations in the statements. */ |
2995 | for (unsigned int i = 0; i < gimple_num_ops (stmt); i++) | |
2996 | { | |
2997 | for (tree op = gimple_op (stmt, i); | |
2998 | op && handled_component_p (op); | |
2999 | op = TREE_OPERAND (op, 0)) | |
3000 | if ((TREE_CODE (op) == ARRAY_REF | |
3001 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
3002 | && TREE_CODE (TREE_OPERAND (op, 1)) == SSA_NAME) | |
3003 | { | |
2d01bef2 | 3004 | ipa_predicate p = bb_predicate; |
a20f263b JH |
3005 | if (fbi.info) |
3006 | p = p & will_be_nonconstant_expr_predicate | |
40a777e8 JH |
3007 | (&fbi, info, params_summary, |
3008 | TREE_OPERAND (op, 1), | |
a20f263b JH |
3009 | nonconstant_names); |
3010 | if (p != false) | |
3011 | { | |
3012 | time += freq; | |
3013 | size += 1; | |
3014 | if (dump_file) | |
3015 | fprintf (dump_file, | |
3016 | "\t\tAccounting address calculation.\n"); | |
3017 | info->account_size_time (ipa_fn_summary::size_scale, | |
3018 | freq, | |
3019 | bb_predicate, | |
3020 | p); | |
3021 | } | |
3022 | } | |
27d020cf | 3023 | } |
a20f263b | 3024 | |
27d020cf JH |
3025 | } |
3026 | } | |
27d020cf JH |
3027 | free (order); |
3028 | ||
3029 | if (nonconstant_names.exists () && !early) | |
3030 | { | |
67ce9099 | 3031 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
67ce9099 MJ |
3032 | unsigned max_loop_predicates = opt_for_fn (node->decl, |
3033 | param_ipa_max_loop_predicates); | |
27d020cf JH |
3034 | |
3035 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3036 | flow_loops_dump (dump_file, NULL, 0); | |
3037 | scev_initialize (); | |
e41ba804 | 3038 | for (auto loop : loops_list (cfun, 0)) |
27d020cf | 3039 | { |
2d01bef2 | 3040 | ipa_predicate loop_iterations = true; |
67ce9099 | 3041 | sreal header_freq; |
27d020cf JH |
3042 | edge ex; |
3043 | unsigned int j; | |
99b1c316 | 3044 | class tree_niter_desc niter_desc; |
67ce9099 MJ |
3045 | if (!loop->header->aux) |
3046 | continue; | |
27d020cf | 3047 | |
67ce9099 MJ |
3048 | profile_count phdr_count = loop_preheader_edge (loop)->count (); |
3049 | sreal phdr_freq = phdr_count.to_sreal_scale (entry_count); | |
3050 | ||
2d01bef2 | 3051 | bb_predicate = *(ipa_predicate *)loop->header->aux; |
4b9d61f7 | 3052 | auto_vec<edge> exits = get_loop_exit_edges (loop); |
27d020cf JH |
3053 | FOR_EACH_VEC_ELT (exits, j, ex) |
3054 | if (number_of_iterations_exit (loop, ex, &niter_desc, false) | |
3055 | && !is_gimple_min_invariant (niter_desc.niter)) | |
3056 | { | |
2d01bef2 | 3057 | ipa_predicate will_be_nonconstant |
c628d1c3 | 3058 | = will_be_nonconstant_expr_predicate (&fbi, info, |
40a777e8 | 3059 | params_summary, |
27d020cf JH |
3060 | niter_desc.niter, |
3061 | nonconstant_names); | |
3062 | if (will_be_nonconstant != true) | |
3063 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
3064 | if (will_be_nonconstant != true | |
3065 | && will_be_nonconstant != false) | |
27d020cf JH |
3066 | loop_iterations &= will_be_nonconstant; |
3067 | } | |
67ce9099 MJ |
3068 | add_freqcounting_predicate (&s->loop_iterations, loop_iterations, |
3069 | phdr_freq, max_loop_predicates); | |
27d020cf JH |
3070 | } |
3071 | ||
3072 | /* To avoid quadratic behavior we analyze stride predicates only | |
3073 | with respect to the containing loop. Thus we simply iterate | |
3074 | over all defs in the outermost loop body. */ | |
9e026da7 | 3075 | for (class loop *loop = loops_for_fn (cfun)->tree_root->inner; |
27d020cf JH |
3076 | loop != NULL; loop = loop->next) |
3077 | { | |
2d01bef2 | 3078 | ipa_predicate loop_stride = true; |
27d020cf | 3079 | basic_block *body = get_loop_body (loop); |
67ce9099 MJ |
3080 | profile_count phdr_count = loop_preheader_edge (loop)->count (); |
3081 | sreal phdr_freq = phdr_count.to_sreal_scale (entry_count); | |
27d020cf JH |
3082 | for (unsigned i = 0; i < loop->num_nodes; i++) |
3083 | { | |
3084 | gimple_stmt_iterator gsi; | |
67ce9099 MJ |
3085 | if (!body[i]->aux) |
3086 | continue; | |
3087 | ||
2d01bef2 | 3088 | bb_predicate = *(ipa_predicate *)body[i]->aux; |
27d020cf JH |
3089 | for (gsi = gsi_start_bb (body[i]); !gsi_end_p (gsi); |
3090 | gsi_next (&gsi)) | |
3091 | { | |
3092 | gimple *stmt = gsi_stmt (gsi); | |
3093 | ||
3094 | if (!is_gimple_assign (stmt)) | |
3095 | continue; | |
3096 | ||
3097 | tree def = gimple_assign_lhs (stmt); | |
3098 | if (TREE_CODE (def) != SSA_NAME) | |
3099 | continue; | |
3100 | ||
3101 | affine_iv iv; | |
3102 | if (!simple_iv (loop_containing_stmt (stmt), | |
3103 | loop_containing_stmt (stmt), | |
3104 | def, &iv, true) | |
3105 | || is_gimple_min_invariant (iv.step)) | |
3106 | continue; | |
3107 | ||
2d01bef2 | 3108 | ipa_predicate will_be_nonconstant |
40a777e8 JH |
3109 | = will_be_nonconstant_expr_predicate (&fbi, info, |
3110 | params_summary, | |
3111 | iv.step, | |
27d020cf JH |
3112 | nonconstant_names); |
3113 | if (will_be_nonconstant != true) | |
3114 | will_be_nonconstant = bb_predicate & will_be_nonconstant; | |
3115 | if (will_be_nonconstant != true | |
3116 | && will_be_nonconstant != false) | |
27d020cf JH |
3117 | loop_stride = loop_stride & will_be_nonconstant; |
3118 | } | |
3119 | } | |
67ce9099 MJ |
3120 | add_freqcounting_predicate (&s->loop_strides, loop_stride, |
3121 | phdr_freq, max_loop_predicates); | |
27d020cf JH |
3122 | free (body); |
3123 | } | |
27d020cf JH |
3124 | scev_finalize (); |
3125 | } | |
3126 | FOR_ALL_BB_FN (bb, my_function) | |
3127 | { | |
3128 | edge e; | |
3129 | edge_iterator ei; | |
3130 | ||
3131 | if (bb->aux) | |
2d01bef2 | 3132 | edge_predicate_pool.remove ((ipa_predicate *)bb->aux); |
27d020cf JH |
3133 | bb->aux = NULL; |
3134 | FOR_EACH_EDGE (e, ei, bb->succs) | |
3135 | { | |
3136 | if (e->aux) | |
2d01bef2 | 3137 | edge_predicate_pool.remove ((ipa_predicate *)e->aux); |
27d020cf JH |
3138 | e->aux = NULL; |
3139 | } | |
3140 | } | |
56f62793 | 3141 | ipa_fn_summary *s = ipa_fn_summaries->get (node); |
f658ad30 | 3142 | ipa_size_summary *ss = ipa_size_summaries->get (node); |
cf9b0b5f | 3143 | s->time = time; |
f658ad30 | 3144 | ss->self_size = size; |
27d020cf JH |
3145 | nonconstant_names.release (); |
3146 | ipa_release_body_info (&fbi); | |
3147 | if (opt_for_fn (node->decl, optimize)) | |
3148 | { | |
3149 | if (!early) | |
3150 | loop_optimizer_finalize (); | |
3151 | else if (!ipa_edge_args_sum) | |
3152 | ipa_free_all_node_params (); | |
3153 | free_dominance_info (CDI_DOMINATORS); | |
efe12656 | 3154 | free_dominance_info (CDI_POST_DOMINATORS); |
27d020cf JH |
3155 | } |
3156 | if (dump_file) | |
3157 | { | |
3158 | fprintf (dump_file, "\n"); | |
0bceb671 | 3159 | ipa_dump_fn_summary (dump_file, node); |
27d020cf JH |
3160 | } |
3161 | } | |
3162 | ||
3163 | ||
0bceb671 JH |
3164 | /* Compute function summary. |
3165 | EARLY is true when we compute parameters during early opts. */ | |
27d020cf JH |
3166 | |
3167 | void | |
0bceb671 | 3168 | compute_fn_summary (struct cgraph_node *node, bool early) |
27d020cf JH |
3169 | { |
3170 | HOST_WIDE_INT self_stack_size; | |
3171 | struct cgraph_edge *e; | |
27d020cf | 3172 | |
a62bfab5 | 3173 | gcc_assert (!node->inlined_to); |
27d020cf | 3174 | |
0bceb671 JH |
3175 | if (!ipa_fn_summaries) |
3176 | ipa_fn_summary_alloc (); | |
27d020cf | 3177 | |
56f62793 ML |
3178 | /* Create a new ipa_fn_summary. */ |
3179 | ((ipa_fn_summary_t *)ipa_fn_summaries)->remove_callees (node); | |
3180 | ipa_fn_summaries->remove (node); | |
f658ad30 JH |
3181 | class ipa_fn_summary *info = ipa_fn_summaries->get_create (node); |
3182 | class ipa_size_summary *size_info = ipa_size_summaries->get_create (node); | |
27d020cf JH |
3183 | |
3184 | /* Estimate the stack size for the function if we're optimizing. */ | |
67f3791f | 3185 | self_stack_size = optimize && !node->thunk |
27d020cf | 3186 | ? estimated_stack_frame_size (node) : 0; |
f658ad30 | 3187 | size_info->estimated_self_stack_size = self_stack_size; |
27d020cf | 3188 | info->estimated_stack_size = self_stack_size; |
27d020cf | 3189 | |
67f3791f | 3190 | if (node->thunk) |
27d020cf | 3191 | { |
99353fcf | 3192 | ipa_call_summary *es = ipa_call_summaries->get_create (node->callees); |
2d01bef2 | 3193 | ipa_predicate t = true; |
27d020cf | 3194 | |
87f94429 | 3195 | node->can_change_signature = false; |
27d020cf JH |
3196 | es->call_stmt_size = eni_size_weights.call_cost; |
3197 | es->call_stmt_time = eni_time_weights.call_cost; | |
d06f73a3 | 3198 | info->account_size_time (ipa_fn_summary::size_scale |
9340d345 JH |
3199 | * opt_for_fn (node->decl, |
3200 | param_uninlined_function_thunk_insns), | |
3201 | opt_for_fn (node->decl, | |
3202 | param_uninlined_function_thunk_time), t, t); | |
2d01bef2 | 3203 | t = ipa_predicate::not_inlined (); |
0bceb671 JH |
3204 | info->account_size_time (2 * ipa_fn_summary::size_scale, 0, t, t); |
3205 | ipa_update_overall_fn_summary (node); | |
f658ad30 | 3206 | size_info->self_size = size_info->size; |
dbcdd561 | 3207 | if (stdarg_p (TREE_TYPE (node->decl))) |
ca04a532 ML |
3208 | { |
3209 | info->inlinable = false; | |
3210 | node->callees->inline_failed = CIF_VARIADIC_THUNK; | |
3211 | } | |
27d020cf JH |
3212 | else |
3213 | info->inlinable = true; | |
3214 | } | |
3215 | else | |
3216 | { | |
3217 | /* Even is_gimple_min_invariant rely on current_function_decl. */ | |
3218 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
3219 | ||
ac0573de JH |
3220 | /* During IPA profile merging we may be called w/o virtual SSA form |
3221 | built. */ | |
3222 | update_ssa (TODO_update_ssa_only_virtuals); | |
3223 | ||
27d020cf JH |
3224 | /* Can this function be inlined at all? */ |
3225 | if (!opt_for_fn (node->decl, optimize) | |
3226 | && !lookup_attribute ("always_inline", | |
3227 | DECL_ATTRIBUTES (node->decl))) | |
3228 | info->inlinable = false; | |
3229 | else | |
3230 | info->inlinable = tree_inlinable_function_p (node->decl); | |
3231 | ||
ecdf414b JH |
3232 | bool no_signature = false; |
3233 | /* Type attributes can use parameter indices to describe them. | |
3234 | Special case fn spec since we can safely preserve them in | |
3235 | modref summaries. */ | |
3236 | for (tree list = TYPE_ATTRIBUTES (TREE_TYPE (node->decl)); | |
3237 | list && !no_signature; list = TREE_CHAIN (list)) | |
2af63f0f JH |
3238 | if (!ipa_param_adjustments::type_attribute_allowed_p |
3239 | (get_attribute_name (list))) | |
ecdf414b JH |
3240 | { |
3241 | if (dump_file) | |
3242 | { | |
3243 | fprintf (dump_file, "No signature change:" | |
3244 | " function type has unhandled attribute %s.\n", | |
3245 | IDENTIFIER_POINTER (get_attribute_name (list))); | |
3246 | } | |
3247 | no_signature = true; | |
3248 | } | |
3249 | for (tree parm = DECL_ARGUMENTS (node->decl); | |
3250 | parm && !no_signature; parm = DECL_CHAIN (parm)) | |
3251 | if (variably_modified_type_p (TREE_TYPE (parm), node->decl)) | |
3252 | { | |
3253 | if (dump_file) | |
3254 | { | |
3255 | fprintf (dump_file, "No signature change:" | |
3256 | " has parameter with variably modified type.\n"); | |
3257 | } | |
3258 | no_signature = true; | |
3259 | } | |
3260 | ||
3261 | /* Likewise for #pragma omp declare simd functions or functions | |
3262 | with simd attribute. */ | |
3263 | if (no_signature | |
3d8fb311 JJ |
3264 | || lookup_attribute ("omp declare simd", |
3265 | DECL_ATTRIBUTES (node->decl))) | |
87f94429 | 3266 | node->can_change_signature = false; |
27d020cf JH |
3267 | else |
3268 | { | |
3269 | /* Otherwise, inlinable functions always can change signature. */ | |
3270 | if (info->inlinable) | |
87f94429 | 3271 | node->can_change_signature = true; |
27d020cf JH |
3272 | else |
3273 | { | |
67914693 | 3274 | /* Functions calling builtin_apply cannot change signature. */ |
27d020cf JH |
3275 | for (e = node->callees; e; e = e->next_callee) |
3276 | { | |
3277 | tree cdecl = e->callee->decl; | |
1edcb2ea JJ |
3278 | if (fndecl_built_in_p (cdecl, BUILT_IN_APPLY_ARGS, |
3279 | BUILT_IN_VA_START)) | |
27d020cf JH |
3280 | break; |
3281 | } | |
87f94429 | 3282 | node->can_change_signature = !e; |
27d020cf JH |
3283 | } |
3284 | } | |
0bceb671 | 3285 | analyze_function_body (node, early); |
27d020cf JH |
3286 | pop_cfun (); |
3287 | } | |
27d020cf JH |
3288 | |
3289 | /* Inlining characteristics are maintained by the cgraph_mark_inline. */ | |
f658ad30 JH |
3290 | size_info->size = size_info->self_size; |
3291 | info->estimated_stack_size = size_info->estimated_self_stack_size; | |
27d020cf JH |
3292 | |
3293 | /* Code above should compute exactly the same result as | |
150bde36 JH |
3294 | ipa_update_overall_fn_summary except for case when speculative |
3295 | edges are present since these are accounted to size but not | |
3296 | self_size. Do not compare time since different order the roundoff | |
3297 | errors result in slight changes. */ | |
0bceb671 | 3298 | ipa_update_overall_fn_summary (node); |
150bde36 JH |
3299 | if (flag_checking) |
3300 | { | |
3301 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3302 | if (e->speculative) | |
3303 | break; | |
3304 | gcc_assert (e || size_info->size == size_info->self_size); | |
3305 | } | |
27d020cf JH |
3306 | } |
3307 | ||
3308 | ||
3309 | /* Compute parameters of functions used by inliner using | |
3310 | current_function_decl. */ | |
3311 | ||
3312 | static unsigned int | |
0bceb671 | 3313 | compute_fn_summary_for_current (void) |
27d020cf | 3314 | { |
0bceb671 | 3315 | compute_fn_summary (cgraph_node::get (current_function_decl), true); |
27d020cf JH |
3316 | return 0; |
3317 | } | |
3318 | ||
9d5af1db MJ |
3319 | /* Estimate benefit devirtualizing indirect edge IE and return true if it can |
3320 | be devirtualized and inlined, provided m_known_vals, m_known_contexts and | |
3321 | m_known_aggs in AVALS. Return false straight away if AVALS is NULL. */ | |
27d020cf JH |
3322 | |
3323 | static bool | |
3324 | estimate_edge_devirt_benefit (struct cgraph_edge *ie, | |
3325 | int *size, int *time, | |
9d5af1db | 3326 | ipa_call_arg_values *avals) |
27d020cf JH |
3327 | { |
3328 | tree target; | |
3329 | struct cgraph_node *callee; | |
99b1c316 | 3330 | class ipa_fn_summary *isummary; |
27d020cf JH |
3331 | enum availability avail; |
3332 | bool speculative; | |
3333 | ||
9d5af1db MJ |
3334 | if (!avals |
3335 | || (!avals->m_known_vals.length() && !avals->m_known_contexts.length ())) | |
27d020cf JH |
3336 | return false; |
3337 | if (!opt_for_fn (ie->caller->decl, flag_indirect_inlining)) | |
3338 | return false; | |
3339 | ||
9d5af1db | 3340 | target = ipa_get_indirect_edge_target (ie, avals, &speculative); |
27d020cf JH |
3341 | if (!target || speculative) |
3342 | return false; | |
3343 | ||
3344 | /* Account for difference in cost between indirect and direct calls. */ | |
3345 | *size -= (eni_size_weights.indirect_call_cost - eni_size_weights.call_cost); | |
3346 | *time -= (eni_time_weights.indirect_call_cost - eni_time_weights.call_cost); | |
3347 | gcc_checking_assert (*time >= 0); | |
3348 | gcc_checking_assert (*size >= 0); | |
3349 | ||
3350 | callee = cgraph_node::get (target); | |
3351 | if (!callee || !callee->definition) | |
3352 | return false; | |
3353 | callee = callee->function_symbol (&avail); | |
3354 | if (avail < AVAIL_AVAILABLE) | |
3355 | return false; | |
56f62793 | 3356 | isummary = ipa_fn_summaries->get (callee); |
1d546c60 ML |
3357 | if (isummary == NULL) |
3358 | return false; | |
3359 | ||
27d020cf JH |
3360 | return isummary->inlinable; |
3361 | } | |
3362 | ||
3363 | /* Increase SIZE, MIN_SIZE (if non-NULL) and TIME for size and time needed to | |
9d5af1db MJ |
3364 | handle edge E with probability PROB. Set HINTS accordingly if edge may be |
3365 | devirtualized. AVALS, if non-NULL, describes the context of the call site | |
3366 | as far as values of parameters are concerened. */ | |
27d020cf JH |
3367 | |
3368 | static inline void | |
3369 | estimate_edge_size_and_time (struct cgraph_edge *e, int *size, int *min_size, | |
9d5af1db | 3370 | sreal *time, ipa_call_arg_values *avals, |
0bceb671 | 3371 | ipa_hints *hints) |
27d020cf | 3372 | { |
99b1c316 | 3373 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3374 | int call_size = es->call_stmt_size; |
3375 | int call_time = es->call_stmt_time; | |
3376 | int cur_size; | |
98450d19 | 3377 | |
83263ef5 | 3378 | if (!e->callee && hints && e->maybe_hot_p () |
9d5af1db | 3379 | && estimate_edge_devirt_benefit (e, &call_size, &call_time, avals)) |
27d020cf | 3380 | *hints |= INLINE_HINT_indirect_call; |
0bceb671 | 3381 | cur_size = call_size * ipa_fn_summary::size_scale; |
27d020cf JH |
3382 | *size += cur_size; |
3383 | if (min_size) | |
3384 | *min_size += cur_size; | |
98450d19 | 3385 | if (time) |
41f0e819 | 3386 | *time += ((sreal)call_time) * e->sreal_frequency (); |
27d020cf JH |
3387 | } |
3388 | ||
3389 | ||
27d020cf | 3390 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all |
9d5af1db MJ |
3391 | calls in NODE. POSSIBLE_TRUTHS and AVALS describe the context of the call |
3392 | site. | |
3393 | ||
070e3489 JH |
3394 | Helper for estimate_calls_size_and_time which does the same but |
3395 | (in most cases) faster. */ | |
27d020cf JH |
3396 | |
3397 | static void | |
070e3489 JH |
3398 | estimate_calls_size_and_time_1 (struct cgraph_node *node, int *size, |
3399 | int *min_size, sreal *time, | |
3400 | ipa_hints *hints, | |
3401 | clause_t possible_truths, | |
9d5af1db | 3402 | ipa_call_arg_values *avals) |
27d020cf JH |
3403 | { |
3404 | struct cgraph_edge *e; | |
3405 | for (e = node->callees; e; e = e->next_callee) | |
3406 | { | |
7237f93e JH |
3407 | if (!e->inline_failed) |
3408 | { | |
3409 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
070e3489 | 3410 | estimate_calls_size_and_time_1 (e->callee, size, min_size, time, |
9d5af1db MJ |
3411 | hints, possible_truths, avals); |
3412 | ||
7237f93e JH |
3413 | continue; |
3414 | } | |
3415 | class ipa_call_summary *es = ipa_call_summaries->get (e); | |
27d020cf JH |
3416 | |
3417 | /* Do not care about zero sized builtins. */ | |
7237f93e | 3418 | if (!es->call_stmt_size) |
27d020cf JH |
3419 | { |
3420 | gcc_checking_assert (!es->call_stmt_time); | |
3421 | continue; | |
3422 | } | |
3423 | if (!es->predicate | |
3424 | || es->predicate->evaluate (possible_truths)) | |
3425 | { | |
7237f93e | 3426 | /* Predicates of calls shall not use NOT_CHANGED codes, |
956d615d | 3427 | so we do not need to compute probabilities. */ |
7237f93e JH |
3428 | estimate_edge_size_and_time (e, size, |
3429 | es->predicate ? NULL : min_size, | |
9d5af1db | 3430 | time, avals, hints); |
27d020cf JH |
3431 | } |
3432 | } | |
3433 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3434 | { | |
7237f93e | 3435 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
3436 | if (!es->predicate |
3437 | || es->predicate->evaluate (possible_truths)) | |
3438 | estimate_edge_size_and_time (e, size, | |
3439 | es->predicate ? NULL : min_size, | |
9d5af1db | 3440 | time, avals, hints); |
27d020cf JH |
3441 | } |
3442 | } | |
3443 | ||
070e3489 JH |
3444 | /* Populate sum->call_size_time_table for edges from NODE. */ |
3445 | ||
3446 | static void | |
3447 | summarize_calls_size_and_time (struct cgraph_node *node, | |
3448 | ipa_fn_summary *sum) | |
3449 | { | |
3450 | struct cgraph_edge *e; | |
3451 | for (e = node->callees; e; e = e->next_callee) | |
3452 | { | |
3453 | if (!e->inline_failed) | |
3454 | { | |
3455 | gcc_checking_assert (!ipa_call_summaries->get (e)); | |
3456 | summarize_calls_size_and_time (e->callee, sum); | |
3457 | continue; | |
3458 | } | |
3459 | int size = 0; | |
3460 | sreal time = 0; | |
3461 | ||
9d5af1db | 3462 | estimate_edge_size_and_time (e, &size, NULL, &time, NULL, NULL); |
070e3489 | 3463 | |
2d01bef2 | 3464 | ipa_predicate pred = true; |
070e3489 JH |
3465 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
3466 | ||
3467 | if (es->predicate) | |
3468 | pred = *es->predicate; | |
3469 | sum->account_size_time (size, time, pred, pred, true); | |
3470 | } | |
3471 | for (e = node->indirect_calls; e; e = e->next_callee) | |
3472 | { | |
3473 | int size = 0; | |
3474 | sreal time = 0; | |
3475 | ||
9d5af1db | 3476 | estimate_edge_size_and_time (e, &size, NULL, &time, NULL, NULL); |
2d01bef2 | 3477 | ipa_predicate pred = true; |
070e3489 JH |
3478 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
3479 | ||
3480 | if (es->predicate) | |
3481 | pred = *es->predicate; | |
3482 | sum->account_size_time (size, time, pred, pred, true); | |
3483 | } | |
3484 | } | |
3485 | ||
3486 | /* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all | |
9d5af1db MJ |
3487 | calls in NODE. POSSIBLE_TRUTHS and AVALS (the latter if non-NULL) describe |
3488 | context of the call site. */ | |
070e3489 JH |
3489 | |
3490 | static void | |
3491 | estimate_calls_size_and_time (struct cgraph_node *node, int *size, | |
3492 | int *min_size, sreal *time, | |
3493 | ipa_hints *hints, | |
3494 | clause_t possible_truths, | |
9d5af1db | 3495 | ipa_call_arg_values *avals) |
070e3489 JH |
3496 | { |
3497 | class ipa_fn_summary *sum = ipa_fn_summaries->get (node); | |
3498 | bool use_table = true; | |
3499 | ||
3500 | gcc_assert (node->callees || node->indirect_calls); | |
3501 | ||
3502 | /* During early inlining we do not calculate info for very | |
3503 | large functions and thus there is no need for producing | |
3504 | summaries. */ | |
3505 | if (!ipa_node_params_sum) | |
3506 | use_table = false; | |
3507 | /* Do not calculate summaries for simple wrappers; it is waste | |
3508 | of memory. */ | |
3509 | else if (node->callees && node->indirect_calls | |
3510 | && node->callees->inline_failed && !node->callees->next_callee) | |
3511 | use_table = false; | |
3512 | /* If there is an indirect edge that may be optimized, we need | |
3513 | to go the slow way. */ | |
9d5af1db MJ |
3514 | else if (avals && hints |
3515 | && (avals->m_known_vals.length () | |
3516 | || avals->m_known_contexts.length () | |
3517 | || avals->m_known_aggs.length ())) | |
070e3489 | 3518 | { |
a4a3cdd0 | 3519 | ipa_node_params *params_summary = ipa_node_params_sum->get (node); |
070e3489 JH |
3520 | unsigned int nargs = params_summary |
3521 | ? ipa_get_param_count (params_summary) : 0; | |
3522 | ||
3523 | for (unsigned int i = 0; i < nargs && use_table; i++) | |
3524 | { | |
3525 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
9d5af1db | 3526 | && (avals->safe_sval_at (i) |
656b2338 | 3527 | || (ipa_argagg_value_list (avals).value_for_index_p (i)))) |
070e3489 JH |
3528 | use_table = false; |
3529 | else if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
9d5af1db MJ |
3530 | && (avals->m_known_contexts.length () > i |
3531 | && !avals->m_known_contexts[i].useless_p ())) | |
070e3489 JH |
3532 | use_table = false; |
3533 | } | |
3534 | } | |
3535 | ||
3536 | /* Fast path is via the call size time table. */ | |
3537 | if (use_table) | |
3538 | { | |
3539 | /* Build summary if it is absent. */ | |
366099ff | 3540 | if (!sum->call_size_time_table.length ()) |
070e3489 | 3541 | { |
2d01bef2 | 3542 | ipa_predicate true_pred = true; |
070e3489 JH |
3543 | sum->account_size_time (0, 0, true_pred, true_pred, true); |
3544 | summarize_calls_size_and_time (node, sum); | |
3545 | } | |
3546 | ||
3547 | int old_size = *size; | |
3548 | sreal old_time = time ? *time : 0; | |
3549 | ||
3550 | if (min_size) | |
366099ff | 3551 | *min_size += sum->call_size_time_table[0].size; |
070e3489 JH |
3552 | |
3553 | unsigned int i; | |
3554 | size_time_entry *e; | |
3555 | ||
3556 | /* Walk the table and account sizes and times. */ | |
366099ff | 3557 | for (i = 0; sum->call_size_time_table.iterate (i, &e); |
070e3489 JH |
3558 | i++) |
3559 | if (e->exec_predicate.evaluate (possible_truths)) | |
3560 | { | |
3561 | *size += e->size; | |
3562 | if (time) | |
3563 | *time += e->time; | |
3564 | } | |
3565 | ||
3566 | /* Be careful and see if both methods agree. */ | |
3567 | if ((flag_checking || dump_file) | |
3568 | /* Do not try to sanity check when we know we lost some | |
3569 | precision. */ | |
366099ff | 3570 | && sum->call_size_time_table.length () |
070e3489 JH |
3571 | < ipa_fn_summary::max_size_time_table_size) |
3572 | { | |
3573 | estimate_calls_size_and_time_1 (node, &old_size, NULL, &old_time, NULL, | |
9d5af1db | 3574 | possible_truths, avals); |
070e3489 JH |
3575 | gcc_assert (*size == old_size); |
3576 | if (time && (*time - old_time > 1 || *time - old_time < -1) | |
3577 | && dump_file) | |
f5b25e15 | 3578 | fprintf (dump_file, "Time mismatch in call summary %f!=%f\n", |
070e3489 JH |
3579 | old_time.to_double (), |
3580 | time->to_double ()); | |
3581 | } | |
3582 | } | |
3583 | /* Slow path by walking all edges. */ | |
3584 | else | |
3585 | estimate_calls_size_and_time_1 (node, size, min_size, time, hints, | |
9d5af1db | 3586 | possible_truths, avals); |
070e3489 JH |
3587 | } |
3588 | ||
9d5af1db MJ |
3589 | /* Main constructor for ipa call context. Memory allocation of ARG_VALUES |
3590 | is owned by the caller. INLINE_PARAM_SUMMARY is also owned by the | |
3591 | caller. */ | |
3592 | ||
3593 | ipa_call_context::ipa_call_context (cgraph_node *node, clause_t possible_truths, | |
1532500e | 3594 | clause_t nonspec_possible_truths, |
1532500e | 3595 | vec<inline_param_summary> |
9d5af1db MJ |
3596 | inline_param_summary, |
3597 | ipa_auto_call_arg_values *arg_values) | |
1532500e JH |
3598 | : m_node (node), m_possible_truths (possible_truths), |
3599 | m_nonspec_possible_truths (nonspec_possible_truths), | |
3600 | m_inline_param_summary (inline_param_summary), | |
9d5af1db | 3601 | m_avals (arg_values) |
1532500e JH |
3602 | { |
3603 | } | |
3604 | ||
40a777e8 JH |
3605 | /* Set THIS to be a duplicate of CTX. Copy all relevant info. */ |
3606 | ||
ac6f2e59 | 3607 | void |
7d2cb275 | 3608 | ipa_cached_call_context::duplicate_from (const ipa_call_context &ctx) |
ac6f2e59 JH |
3609 | { |
3610 | m_node = ctx.m_node; | |
3611 | m_possible_truths = ctx.m_possible_truths; | |
3612 | m_nonspec_possible_truths = ctx.m_nonspec_possible_truths; | |
a4a3cdd0 | 3613 | ipa_node_params *params_summary = ipa_node_params_sum->get (m_node); |
6cf67b62 JH |
3614 | unsigned int nargs = params_summary |
3615 | ? ipa_get_param_count (params_summary) : 0; | |
ac6f2e59 | 3616 | |
40a777e8 JH |
3617 | m_inline_param_summary = vNULL; |
3618 | /* Copy the info only if there is at least one useful entry. */ | |
ac6f2e59 | 3619 | if (ctx.m_inline_param_summary.exists ()) |
40a777e8 JH |
3620 | { |
3621 | unsigned int n = MIN (ctx.m_inline_param_summary.length (), nargs); | |
3622 | ||
3623 | for (unsigned int i = 0; i < n; i++) | |
3624 | if (ipa_is_param_used_by_ipa_predicates (params_summary, i) | |
3625 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3626 | { | |
3627 | m_inline_param_summary | |
3628 | = ctx.m_inline_param_summary.copy (); | |
3629 | break; | |
3630 | } | |
3631 | } | |
9d5af1db MJ |
3632 | m_avals.m_known_vals = vNULL; |
3633 | if (ctx.m_avals.m_known_vals.exists ()) | |
40a777e8 | 3634 | { |
9d5af1db | 3635 | unsigned int n = MIN (ctx.m_avals.m_known_vals.length (), nargs); |
40a777e8 JH |
3636 | |
3637 | for (unsigned int i = 0; i < n; i++) | |
3638 | if (ipa_is_param_used_by_indirect_call (params_summary, i) | |
9d5af1db | 3639 | && ctx.m_avals.m_known_vals[i]) |
40a777e8 | 3640 | { |
9d5af1db | 3641 | m_avals.m_known_vals = ctx.m_avals.m_known_vals.copy (); |
40a777e8 JH |
3642 | break; |
3643 | } | |
3644 | } | |
3645 | ||
9d5af1db MJ |
3646 | m_avals.m_known_contexts = vNULL; |
3647 | if (ctx.m_avals.m_known_contexts.exists ()) | |
40a777e8 | 3648 | { |
9d5af1db | 3649 | unsigned int n = MIN (ctx.m_avals.m_known_contexts.length (), nargs); |
40a777e8 JH |
3650 | |
3651 | for (unsigned int i = 0; i < n; i++) | |
3652 | if (ipa_is_param_used_by_polymorphic_call (params_summary, i) | |
9d5af1db | 3653 | && !ctx.m_avals.m_known_contexts[i].useless_p ()) |
40a777e8 | 3654 | { |
9d5af1db | 3655 | m_avals.m_known_contexts = ctx.m_avals.m_known_contexts.copy (); |
40a777e8 JH |
3656 | break; |
3657 | } | |
3658 | } | |
3659 | ||
9d5af1db MJ |
3660 | m_avals.m_known_aggs = vNULL; |
3661 | if (ctx.m_avals.m_known_aggs.exists ()) | |
40a777e8 | 3662 | { |
656b2338 MJ |
3663 | const ipa_argagg_value_list avl (&ctx.m_avals); |
3664 | for (unsigned int i = 0; i < nargs; i++) | |
40a777e8 | 3665 | if (ipa_is_param_used_by_indirect_call (params_summary, i) |
656b2338 | 3666 | && avl.value_for_index_p (i)) |
40a777e8 | 3667 | { |
656b2338 | 3668 | m_avals.m_known_aggs = ctx.m_avals.m_known_aggs.copy (); |
40a777e8 JH |
3669 | break; |
3670 | } | |
3671 | } | |
9d5af1db MJ |
3672 | |
3673 | m_avals.m_known_value_ranges = vNULL; | |
ac6f2e59 JH |
3674 | } |
3675 | ||
7d2cb275 MJ |
3676 | /* Release memory used by known_vals/contexts/aggs vectors. and |
3677 | inline_param_summary. */ | |
1532500e JH |
3678 | |
3679 | void | |
7d2cb275 | 3680 | ipa_cached_call_context::release () |
1532500e | 3681 | { |
ac6f2e59 JH |
3682 | /* See if context is initialized at first place. */ |
3683 | if (!m_node) | |
3684 | return; | |
656b2338 | 3685 | m_avals.m_known_aggs.release (); |
7d2cb275 MJ |
3686 | m_avals.m_known_vals.release (); |
3687 | m_avals.m_known_contexts.release (); | |
3688 | m_inline_param_summary.release (); | |
ac6f2e59 JH |
3689 | } |
3690 | ||
3691 | /* Return true if CTX describes the same call context as THIS. */ | |
3692 | ||
3693 | bool | |
3694 | ipa_call_context::equal_to (const ipa_call_context &ctx) | |
3695 | { | |
3696 | if (m_node != ctx.m_node | |
3697 | || m_possible_truths != ctx.m_possible_truths | |
3698 | || m_nonspec_possible_truths != ctx.m_nonspec_possible_truths) | |
3699 | return false; | |
40a777e8 | 3700 | |
a4a3cdd0 | 3701 | ipa_node_params *params_summary = ipa_node_params_sum->get (m_node); |
6cf67b62 JH |
3702 | unsigned int nargs = params_summary |
3703 | ? ipa_get_param_count (params_summary) : 0; | |
40a777e8 JH |
3704 | |
3705 | if (m_inline_param_summary.exists () || ctx.m_inline_param_summary.exists ()) | |
ac6f2e59 | 3706 | { |
40a777e8 JH |
3707 | for (unsigned int i = 0; i < nargs; i++) |
3708 | { | |
3709 | if (!ipa_is_param_used_by_ipa_predicates (params_summary, i)) | |
3710 | continue; | |
3711 | if (i >= m_inline_param_summary.length () | |
3712 | || m_inline_param_summary[i].useless_p ()) | |
3713 | { | |
3714 | if (i < ctx.m_inline_param_summary.length () | |
3715 | && !ctx.m_inline_param_summary[i].useless_p ()) | |
3716 | return false; | |
3717 | continue; | |
3718 | } | |
3719 | if (i >= ctx.m_inline_param_summary.length () | |
3720 | || ctx.m_inline_param_summary[i].useless_p ()) | |
3721 | { | |
3722 | if (i < m_inline_param_summary.length () | |
3723 | && !m_inline_param_summary[i].useless_p ()) | |
3724 | return false; | |
3725 | continue; | |
3726 | } | |
3727 | if (!m_inline_param_summary[i].equal_to | |
3728 | (ctx.m_inline_param_summary[i])) | |
3729 | return false; | |
3730 | } | |
ac6f2e59 | 3731 | } |
9d5af1db | 3732 | if (m_avals.m_known_vals.exists () || ctx.m_avals.m_known_vals.exists ()) |
ac6f2e59 | 3733 | { |
40a777e8 | 3734 | for (unsigned int i = 0; i < nargs; i++) |
ac6f2e59 | 3735 | { |
40a777e8 JH |
3736 | if (!ipa_is_param_used_by_indirect_call (params_summary, i)) |
3737 | continue; | |
9d5af1db | 3738 | if (i >= m_avals.m_known_vals.length () || !m_avals.m_known_vals[i]) |
40a777e8 | 3739 | { |
9d5af1db MJ |
3740 | if (i < ctx.m_avals.m_known_vals.length () |
3741 | && ctx.m_avals.m_known_vals[i]) | |
40a777e8 JH |
3742 | return false; |
3743 | continue; | |
3744 | } | |
9d5af1db MJ |
3745 | if (i >= ctx.m_avals.m_known_vals.length () |
3746 | || !ctx.m_avals.m_known_vals[i]) | |
40a777e8 | 3747 | { |
9d5af1db | 3748 | if (i < m_avals.m_known_vals.length () && m_avals.m_known_vals[i]) |
40a777e8 JH |
3749 | return false; |
3750 | continue; | |
3751 | } | |
9d5af1db | 3752 | if (m_avals.m_known_vals[i] != ctx.m_avals.m_known_vals[i]) |
ac6f2e59 JH |
3753 | return false; |
3754 | } | |
3755 | } | |
9d5af1db MJ |
3756 | if (m_avals.m_known_contexts.exists () |
3757 | || ctx.m_avals.m_known_contexts.exists ()) | |
ac6f2e59 | 3758 | { |
40a777e8 JH |
3759 | for (unsigned int i = 0; i < nargs; i++) |
3760 | { | |
3761 | if (!ipa_is_param_used_by_polymorphic_call (params_summary, i)) | |
3762 | continue; | |
9d5af1db MJ |
3763 | if (i >= m_avals.m_known_contexts.length () |
3764 | || m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 | 3765 | { |
9d5af1db MJ |
3766 | if (i < ctx.m_avals.m_known_contexts.length () |
3767 | && !ctx.m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 JH |
3768 | return false; |
3769 | continue; | |
3770 | } | |
9d5af1db MJ |
3771 | if (i >= ctx.m_avals.m_known_contexts.length () |
3772 | || ctx.m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 | 3773 | { |
9d5af1db MJ |
3774 | if (i < m_avals.m_known_contexts.length () |
3775 | && !m_avals.m_known_contexts[i].useless_p ()) | |
40a777e8 JH |
3776 | return false; |
3777 | continue; | |
3778 | } | |
9d5af1db MJ |
3779 | if (!m_avals.m_known_contexts[i].equal_to |
3780 | (ctx.m_avals.m_known_contexts[i])) | |
40a777e8 JH |
3781 | return false; |
3782 | } | |
ac6f2e59 | 3783 | } |
9d5af1db | 3784 | if (m_avals.m_known_aggs.exists () || ctx.m_avals.m_known_aggs.exists ()) |
ac6f2e59 | 3785 | { |
656b2338 MJ |
3786 | unsigned i = 0, j = 0; |
3787 | while (i < m_avals.m_known_aggs.length () | |
3788 | || j < ctx.m_avals.m_known_aggs.length ()) | |
40a777e8 | 3789 | { |
656b2338 | 3790 | if (i >= m_avals.m_known_aggs.length ()) |
40a777e8 | 3791 | { |
656b2338 MJ |
3792 | int idx2 = ctx.m_avals.m_known_aggs[j].index; |
3793 | if (ipa_is_param_used_by_indirect_call (params_summary, idx2)) | |
40a777e8 | 3794 | return false; |
656b2338 | 3795 | j++; |
40a777e8 JH |
3796 | continue; |
3797 | } | |
656b2338 | 3798 | if (j >= ctx.m_avals.m_known_aggs.length ()) |
40a777e8 | 3799 | { |
656b2338 MJ |
3800 | int idx1 = m_avals.m_known_aggs[i].index; |
3801 | if (ipa_is_param_used_by_indirect_call (params_summary, idx1)) | |
40a777e8 | 3802 | return false; |
656b2338 | 3803 | i++; |
40a777e8 JH |
3804 | continue; |
3805 | } | |
656b2338 MJ |
3806 | |
3807 | int idx1 = m_avals.m_known_aggs[i].index; | |
3808 | int idx2 = ctx.m_avals.m_known_aggs[j].index; | |
3809 | if (idx1 < idx2) | |
3810 | { | |
3811 | if (ipa_is_param_used_by_indirect_call (params_summary, idx1)) | |
3812 | return false; | |
3813 | i++; | |
3814 | continue; | |
3815 | } | |
3816 | if (idx1 > idx2) | |
3817 | { | |
3818 | if (ipa_is_param_used_by_indirect_call (params_summary, idx2)) | |
3819 | return false; | |
3820 | j++; | |
3821 | continue; | |
3822 | } | |
3823 | if (!ipa_is_param_used_by_indirect_call (params_summary, idx1)) | |
3824 | { | |
3825 | i++; | |
3826 | j++; | |
3827 | continue; | |
3828 | } | |
3829 | ||
3830 | if ((m_avals.m_known_aggs[i].unit_offset | |
3831 | != ctx.m_avals.m_known_aggs[j].unit_offset) | |
3832 | || (m_avals.m_known_aggs[i].by_ref | |
3833 | != ctx.m_avals.m_known_aggs[j].by_ref) | |
3834 | || !operand_equal_p (m_avals.m_known_aggs[i].value, | |
3835 | ctx.m_avals.m_known_aggs[j].value)) | |
40a777e8 | 3836 | return false; |
656b2338 MJ |
3837 | i++; |
3838 | j++; | |
40a777e8 | 3839 | } |
ac6f2e59 JH |
3840 | } |
3841 | return true; | |
1532500e | 3842 | } |
27d020cf | 3843 | |
1e7fdc02 MJ |
3844 | /* Fill in the selected fields in ESTIMATES with value estimated for call in |
3845 | this context. Always compute size and min_size. Only compute time and | |
3846 | nonspecialized_time if EST_TIMES is true. Only compute hints if EST_HINTS | |
3847 | is true. */ | |
27d020cf JH |
3848 | |
3849 | void | |
1e7fdc02 MJ |
3850 | ipa_call_context::estimate_size_and_time (ipa_call_estimates *estimates, |
3851 | bool est_times, bool est_hints) | |
27d020cf | 3852 | { |
7237f93e | 3853 | class ipa_fn_summary *info = ipa_fn_summaries->get (m_node); |
27d020cf JH |
3854 | size_time_entry *e; |
3855 | int size = 0; | |
3856 | sreal time = 0; | |
3857 | int min_size = 0; | |
0bceb671 | 3858 | ipa_hints hints = 0; |
67ce9099 MJ |
3859 | sreal loops_with_known_iterations = 0; |
3860 | sreal loops_with_known_strides = 0; | |
27d020cf JH |
3861 | int i; |
3862 | ||
3863 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
3864 | { | |
3865 | bool found = false; | |
d597b944 ML |
3866 | fprintf (dump_file, " Estimating body: %s\n" |
3867 | " Known to be false: ", m_node->dump_name ()); | |
27d020cf | 3868 | |
2d01bef2 ML |
3869 | for (i = ipa_predicate::not_inlined_condition; |
3870 | i < (ipa_predicate::first_dynamic_condition | |
27d020cf | 3871 | + (int) vec_safe_length (info->conds)); i++) |
1532500e | 3872 | if (!(m_possible_truths & (1 << i))) |
27d020cf JH |
3873 | { |
3874 | if (found) | |
3875 | fprintf (dump_file, ", "); | |
3876 | found = true; | |
3877 | dump_condition (dump_file, info->conds, i); | |
3878 | } | |
3879 | } | |
3880 | ||
070e3489 JH |
3881 | if (m_node->callees || m_node->indirect_calls) |
3882 | estimate_calls_size_and_time (m_node, &size, &min_size, | |
1e7fdc02 MJ |
3883 | est_times ? &time : NULL, |
3884 | est_hints ? &hints : NULL, m_possible_truths, | |
9d5af1db | 3885 | &m_avals); |
83263ef5 | 3886 | |
27d020cf JH |
3887 | sreal nonspecialized_time = time; |
3888 | ||
366099ff JH |
3889 | min_size += info->size_time_table[0].size; |
3890 | for (i = 0; info->size_time_table.iterate (i, &e); i++) | |
27d020cf | 3891 | { |
1532500e | 3892 | bool exec = e->exec_predicate.evaluate (m_nonspec_possible_truths); |
3494e738 JH |
3893 | |
3894 | /* Because predicates are conservative, it can happen that nonconst is 1 | |
3895 | but exec is 0. */ | |
27d020cf JH |
3896 | if (exec) |
3897 | { | |
1532500e | 3898 | bool nonconst = e->nonconst_predicate.evaluate (m_possible_truths); |
3494e738 | 3899 | |
27d020cf JH |
3900 | gcc_checking_assert (e->time >= 0); |
3901 | gcc_checking_assert (time >= 0); | |
3902 | ||
3903 | /* We compute specialized size only because size of nonspecialized | |
3904 | copy is context independent. | |
3905 | ||
3906 | The difference between nonspecialized execution and specialized is | |
3907 | that nonspecialized is not going to have optimized out computations | |
3908 | known to be constant in a specialized setting. */ | |
3909 | if (nonconst) | |
3910 | size += e->size; | |
1e7fdc02 | 3911 | if (!est_times) |
83263ef5 | 3912 | continue; |
27d020cf JH |
3913 | nonspecialized_time += e->time; |
3914 | if (!nonconst) | |
3915 | ; | |
1532500e | 3916 | else if (!m_inline_param_summary.exists ()) |
27d020cf JH |
3917 | { |
3918 | if (nonconst) | |
3919 | time += e->time; | |
3920 | } | |
3921 | else | |
3922 | { | |
3923 | int prob = e->nonconst_predicate.probability | |
1532500e JH |
3924 | (info->conds, m_possible_truths, |
3925 | m_inline_param_summary); | |
27d020cf JH |
3926 | gcc_checking_assert (prob >= 0); |
3927 | gcc_checking_assert (prob <= REG_BR_PROB_BASE); | |
fd4656a2 JH |
3928 | if (prob == REG_BR_PROB_BASE) |
3929 | time += e->time; | |
3930 | else | |
3931 | time += e->time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
3932 | } |
3933 | gcc_checking_assert (time >= 0); | |
3934 | } | |
3935 | } | |
366099ff JH |
3936 | gcc_checking_assert (info->size_time_table[0].exec_predicate == true); |
3937 | gcc_checking_assert (info->size_time_table[0].nonconst_predicate == true); | |
e3bd08dd | 3938 | gcc_checking_assert (min_size >= 0); |
27d020cf JH |
3939 | gcc_checking_assert (size >= 0); |
3940 | gcc_checking_assert (time >= 0); | |
3941 | /* nonspecialized_time should be always bigger than specialized time. | |
3942 | Roundoff issues however may get into the way. */ | |
59d27026 | 3943 | gcc_checking_assert ((nonspecialized_time - time * 99 / 100) >= -1); |
27d020cf JH |
3944 | |
3945 | /* Roundoff issues may make specialized time bigger than nonspecialized | |
956d615d | 3946 | time. We do not really want that to happen because some heuristics |
27d020cf JH |
3947 | may get confused by seeing negative speedups. */ |
3948 | if (time > nonspecialized_time) | |
3949 | time = nonspecialized_time; | |
3950 | ||
1e7fdc02 | 3951 | if (est_hints) |
83263ef5 | 3952 | { |
83263ef5 JH |
3953 | if (info->scc_no) |
3954 | hints |= INLINE_HINT_in_scc; | |
3955 | if (DECL_DECLARED_INLINE_P (m_node->decl)) | |
3956 | hints |= INLINE_HINT_declared_inline; | |
caaa218f JH |
3957 | if (info->builtin_constant_p_parms.length () |
3958 | && DECL_DECLARED_INLINE_P (m_node->decl)) | |
3959 | hints |= INLINE_HINT_builtin_constant_p; | |
67ce9099 MJ |
3960 | |
3961 | ipa_freqcounting_predicate *fcp; | |
3962 | for (i = 0; vec_safe_iterate (info->loop_iterations, i, &fcp); i++) | |
3963 | if (!fcp->predicate->evaluate (m_possible_truths)) | |
3964 | { | |
3965 | hints |= INLINE_HINT_loop_iterations; | |
3966 | loops_with_known_iterations += fcp->freq; | |
3967 | } | |
3968 | estimates->loops_with_known_iterations = loops_with_known_iterations; | |
3969 | ||
3970 | for (i = 0; vec_safe_iterate (info->loop_strides, i, &fcp); i++) | |
3971 | if (!fcp->predicate->evaluate (m_possible_truths)) | |
3972 | { | |
3973 | hints |= INLINE_HINT_loop_stride; | |
3974 | loops_with_known_strides += fcp->freq; | |
3975 | } | |
3976 | estimates->loops_with_known_strides = loops_with_known_strides; | |
83263ef5 | 3977 | } |
27d020cf | 3978 | |
0bceb671 JH |
3979 | size = RDIV (size, ipa_fn_summary::size_scale); |
3980 | min_size = RDIV (min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
3981 | |
3982 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
1e7fdc02 | 3983 | { |
67ce9099 | 3984 | fprintf (dump_file, "\n size:%i", (int) size); |
1e7fdc02 | 3985 | if (est_times) |
67ce9099 MJ |
3986 | fprintf (dump_file, " time:%f nonspec time:%f", |
3987 | time.to_double (), nonspecialized_time.to_double ()); | |
3988 | if (est_hints) | |
3989 | fprintf (dump_file, " loops with known iterations:%f " | |
3990 | "known strides:%f", loops_with_known_iterations.to_double (), | |
3991 | loops_with_known_strides.to_double ()); | |
3992 | fprintf (dump_file, "\n"); | |
1e7fdc02 MJ |
3993 | } |
3994 | if (est_times) | |
3995 | { | |
3996 | estimates->time = time; | |
3997 | estimates->nonspecialized_time = nonspecialized_time; | |
3998 | } | |
3999 | estimates->size = size; | |
4000 | estimates->min_size = min_size; | |
4001 | if (est_hints) | |
4002 | estimates->hints = hints; | |
27d020cf JH |
4003 | return; |
4004 | } | |
4005 | ||
4006 | ||
4007 | /* Estimate size and time needed to execute callee of EDGE assuming that | |
4008 | parameters known to be constant at caller of EDGE are propagated. | |
4009 | KNOWN_VALS and KNOWN_CONTEXTS are vectors of assumed known constant values | |
4010 | and types for parameters. */ | |
4011 | ||
4012 | void | |
4013 | estimate_ipcp_clone_size_and_time (struct cgraph_node *node, | |
9d5af1db | 4014 | ipa_auto_call_arg_values *avals, |
1e7fdc02 | 4015 | ipa_call_estimates *estimates) |
27d020cf JH |
4016 | { |
4017 | clause_t clause, nonspec_clause; | |
4018 | ||
9d5af1db | 4019 | evaluate_conditions_for_known_args (node, false, avals, &clause, |
5a1ef1cf | 4020 | &nonspec_clause, NULL); |
9d5af1db | 4021 | ipa_call_context ctx (node, clause, nonspec_clause, vNULL, avals); |
1e7fdc02 | 4022 | ctx.estimate_size_and_time (estimates); |
27d020cf JH |
4023 | } |
4024 | ||
f658ad30 JH |
4025 | /* Return stack frame offset where frame of NODE is supposed to start inside |
4026 | of the function it is inlined to. | |
4027 | Return 0 for functions that are not inlined. */ | |
4028 | ||
4029 | HOST_WIDE_INT | |
4030 | ipa_get_stack_frame_offset (struct cgraph_node *node) | |
4031 | { | |
4032 | HOST_WIDE_INT offset = 0; | |
a62bfab5 | 4033 | if (!node->inlined_to) |
f658ad30 JH |
4034 | return 0; |
4035 | node = node->callers->caller; | |
4036 | while (true) | |
4037 | { | |
4038 | offset += ipa_size_summaries->get (node)->estimated_self_stack_size; | |
a62bfab5 | 4039 | if (!node->inlined_to) |
f658ad30 JH |
4040 | return offset; |
4041 | node = node->callers->caller; | |
4042 | } | |
4043 | } | |
4044 | ||
27d020cf JH |
4045 | |
4046 | /* Update summary information of inline clones after inlining. | |
4047 | Compute peak stack usage. */ | |
4048 | ||
4049 | static void | |
4050 | inline_update_callee_summaries (struct cgraph_node *node, int depth) | |
4051 | { | |
4052 | struct cgraph_edge *e; | |
f658ad30 | 4053 | |
27d020cf JH |
4054 | ipa_propagate_frequency (node); |
4055 | for (e = node->callees; e; e = e->next_callee) | |
4056 | { | |
4057 | if (!e->inline_failed) | |
4058 | inline_update_callee_summaries (e->callee, depth); | |
7237f93e JH |
4059 | else |
4060 | ipa_call_summaries->get (e)->loop_depth += depth; | |
27d020cf JH |
4061 | } |
4062 | for (e = node->indirect_calls; e; e = e->next_callee) | |
56f62793 | 4063 | ipa_call_summaries->get (e)->loop_depth += depth; |
27d020cf JH |
4064 | } |
4065 | ||
b89e4559 JH |
4066 | /* Update change_prob and points_to_local_or_readonly_memory of EDGE after |
4067 | INLINED_EDGE has been inlined. | |
4068 | ||
6cf67b62 | 4069 | When function A is inlined in B and A calls C with parameter that |
956d615d | 4070 | changes with probability PROB1 and C is known to be passthrough |
27d020cf JH |
4071 | of argument if B that change with probability PROB2, the probability |
4072 | of change is now PROB1*PROB2. */ | |
4073 | ||
4074 | static void | |
b89e4559 JH |
4075 | remap_edge_params (struct cgraph_edge *inlined_edge, |
4076 | struct cgraph_edge *edge) | |
27d020cf JH |
4077 | { |
4078 | if (ipa_node_params_sum) | |
4079 | { | |
4080 | int i; | |
a4a3cdd0 | 4081 | ipa_edge_args *args = ipa_edge_args_sum->get (edge); |
a33c028e JH |
4082 | if (!args) |
4083 | return; | |
99b1c316 MS |
4084 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
4085 | class ipa_call_summary *inlined_es | |
56f62793 | 4086 | = ipa_call_summaries->get (inlined_edge); |
27d020cf | 4087 | |
8c02e054 JH |
4088 | if (es->param.length () == 0) |
4089 | return; | |
4090 | ||
27d020cf JH |
4091 | for (i = 0; i < ipa_get_cs_argument_count (args); i++) |
4092 | { | |
4093 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
4094 | if (jfunc->type == IPA_JF_PASS_THROUGH | |
4095 | || jfunc->type == IPA_JF_ANCESTOR) | |
4096 | { | |
4097 | int id = jfunc->type == IPA_JF_PASS_THROUGH | |
4098 | ? ipa_get_jf_pass_through_formal_id (jfunc) | |
4099 | : ipa_get_jf_ancestor_formal_id (jfunc); | |
4100 | if (id < (int) inlined_es->param.length ()) | |
4101 | { | |
4102 | int prob1 = es->param[i].change_prob; | |
4103 | int prob2 = inlined_es->param[id].change_prob; | |
4104 | int prob = combine_probabilities (prob1, prob2); | |
4105 | ||
4106 | if (prob1 && prob2 && !prob) | |
4107 | prob = 1; | |
4108 | ||
4109 | es->param[i].change_prob = prob; | |
b89e4559 JH |
4110 | |
4111 | if (inlined_es | |
4112 | ->param[id].points_to_local_or_readonly_memory) | |
4113 | es->param[i].points_to_local_or_readonly_memory = true; | |
5a1ef1cf H |
4114 | if (inlined_es |
4115 | ->param[id].points_to_possible_sra_candidate) | |
4116 | es->param[i].points_to_possible_sra_candidate = true; | |
27d020cf | 4117 | } |
b89e4559 JH |
4118 | if (!es->param[i].points_to_local_or_readonly_memory |
4119 | && jfunc->type == IPA_JF_CONST | |
4120 | && points_to_local_or_readonly_memory_p | |
4121 | (ipa_get_jf_constant (jfunc))) | |
4122 | es->param[i].points_to_local_or_readonly_memory = true; | |
27d020cf JH |
4123 | } |
4124 | } | |
4125 | } | |
4126 | } | |
4127 | ||
4128 | /* Update edge summaries of NODE after INLINED_EDGE has been inlined. | |
4129 | ||
4130 | Remap predicates of callees of NODE. Rest of arguments match | |
4131 | remap_predicate. | |
4132 | ||
4133 | Also update change probabilities. */ | |
4134 | ||
4135 | static void | |
4136 | remap_edge_summaries (struct cgraph_edge *inlined_edge, | |
4137 | struct cgraph_node *node, | |
99b1c316 | 4138 | class ipa_fn_summary *info, |
40a777e8 | 4139 | class ipa_node_params *params_summary, |
99b1c316 | 4140 | class ipa_fn_summary *callee_info, |
00dcc88a MS |
4141 | const vec<int> &operand_map, |
4142 | const vec<HOST_WIDE_INT> &offset_map, | |
27d020cf | 4143 | clause_t possible_truths, |
2d01bef2 | 4144 | ipa_predicate *toplev_predicate) |
27d020cf JH |
4145 | { |
4146 | struct cgraph_edge *e, *next; | |
4147 | for (e = node->callees; e; e = next) | |
4148 | { | |
2d01bef2 | 4149 | ipa_predicate p; |
27d020cf JH |
4150 | next = e->next_callee; |
4151 | ||
4152 | if (e->inline_failed) | |
4153 | { | |
6cf67b62 | 4154 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
b89e4559 | 4155 | remap_edge_params (inlined_edge, e); |
27d020cf JH |
4156 | |
4157 | if (es->predicate) | |
4158 | { | |
4159 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
4160 | (info, params_summary, |
4161 | callee_info, operand_map, | |
27d020cf JH |
4162 | offset_map, possible_truths, |
4163 | *toplev_predicate); | |
4164 | edge_set_predicate (e, &p); | |
4165 | } | |
4166 | else | |
4167 | edge_set_predicate (e, toplev_predicate); | |
4168 | } | |
4169 | else | |
40a777e8 JH |
4170 | remap_edge_summaries (inlined_edge, e->callee, info, |
4171 | params_summary, callee_info, | |
27d020cf JH |
4172 | operand_map, offset_map, possible_truths, |
4173 | toplev_predicate); | |
4174 | } | |
4175 | for (e = node->indirect_calls; e; e = next) | |
4176 | { | |
99b1c316 | 4177 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
2d01bef2 | 4178 | ipa_predicate p; |
27d020cf JH |
4179 | next = e->next_callee; |
4180 | ||
b89e4559 | 4181 | remap_edge_params (inlined_edge, e); |
27d020cf JH |
4182 | if (es->predicate) |
4183 | { | |
4184 | p = es->predicate->remap_after_inlining | |
40a777e8 JH |
4185 | (info, params_summary, |
4186 | callee_info, operand_map, offset_map, | |
27d020cf JH |
4187 | possible_truths, *toplev_predicate); |
4188 | edge_set_predicate (e, &p); | |
4189 | } | |
4190 | else | |
4191 | edge_set_predicate (e, toplev_predicate); | |
4192 | } | |
4193 | } | |
4194 | ||
67ce9099 | 4195 | /* Run remap_after_inlining on each predicate in V. */ |
27d020cf JH |
4196 | |
4197 | static void | |
67ce9099 MJ |
4198 | remap_freqcounting_predicate (class ipa_fn_summary *info, |
4199 | class ipa_node_params *params_summary, | |
4200 | class ipa_fn_summary *callee_info, | |
4201 | vec<ipa_freqcounting_predicate, va_gc> *v, | |
00dcc88a MS |
4202 | const vec<int> &operand_map, |
4203 | const vec<HOST_WIDE_INT> &offset_map, | |
67ce9099 | 4204 | clause_t possible_truths, |
2d01bef2 | 4205 | ipa_predicate *toplev_predicate) |
27d020cf | 4206 | |
67ce9099 MJ |
4207 | { |
4208 | ipa_freqcounting_predicate *fcp; | |
4209 | for (int i = 0; vec_safe_iterate (v, i, &fcp); i++) | |
27d020cf | 4210 | { |
2d01bef2 | 4211 | ipa_predicate p |
67ce9099 MJ |
4212 | = fcp->predicate->remap_after_inlining (info, params_summary, |
4213 | callee_info, operand_map, | |
4214 | offset_map, possible_truths, | |
4215 | *toplev_predicate); | |
4216 | if (p != false && p != true) | |
4217 | *fcp->predicate &= p; | |
27d020cf JH |
4218 | } |
4219 | } | |
4220 | ||
4221 | /* We inlined EDGE. Update summary of the function we inlined into. */ | |
4222 | ||
4223 | void | |
0bceb671 | 4224 | ipa_merge_fn_summary_after_inlining (struct cgraph_edge *edge) |
27d020cf | 4225 | { |
56f62793 | 4226 | ipa_fn_summary *callee_info = ipa_fn_summaries->get (edge->callee); |
a62bfab5 ML |
4227 | struct cgraph_node *to = (edge->caller->inlined_to |
4228 | ? edge->caller->inlined_to : edge->caller); | |
99b1c316 | 4229 | class ipa_fn_summary *info = ipa_fn_summaries->get (to); |
27d020cf JH |
4230 | clause_t clause = 0; /* not_inline is known to be false. */ |
4231 | size_time_entry *e; | |
f658ad30 | 4232 | auto_vec<int, 8> operand_map; |
14338468 | 4233 | auto_vec<HOST_WIDE_INT, 8> offset_map; |
27d020cf | 4234 | int i; |
2d01bef2 | 4235 | ipa_predicate toplev_predicate; |
99b1c316 | 4236 | class ipa_call_summary *es = ipa_call_summaries->get (edge); |
a4a3cdd0 MJ |
4237 | ipa_node_params *params_summary = (ipa_node_params_sum |
4238 | ? ipa_node_params_sum->get (to) : NULL); | |
27d020cf JH |
4239 | |
4240 | if (es->predicate) | |
4241 | toplev_predicate = *es->predicate; | |
4242 | else | |
4243 | toplev_predicate = true; | |
4244 | ||
4245 | info->fp_expressions |= callee_info->fp_expressions; | |
0fc60c18 | 4246 | info->target_info |= callee_info->target_info; |
27d020cf JH |
4247 | |
4248 | if (callee_info->conds) | |
b0d55476 | 4249 | { |
9d5af1db MJ |
4250 | ipa_auto_call_arg_values avals; |
4251 | evaluate_properties_for_edge (edge, true, &clause, NULL, &avals, false); | |
b0d55476 | 4252 | } |
27d020cf JH |
4253 | if (ipa_node_params_sum && callee_info->conds) |
4254 | { | |
a4a3cdd0 | 4255 | ipa_edge_args *args = ipa_edge_args_sum->get (edge); |
5a0236f8 | 4256 | int count = args ? ipa_get_cs_argument_count (args) : 0; |
27d020cf JH |
4257 | int i; |
4258 | ||
4259 | if (count) | |
4260 | { | |
cb3874dc ML |
4261 | operand_map.safe_grow_cleared (count, true); |
4262 | offset_map.safe_grow_cleared (count, true); | |
27d020cf JH |
4263 | } |
4264 | for (i = 0; i < count; i++) | |
4265 | { | |
4266 | struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i); | |
4267 | int map = -1; | |
4268 | ||
4269 | /* TODO: handle non-NOPs when merging. */ | |
4270 | if (jfunc->type == IPA_JF_PASS_THROUGH) | |
4271 | { | |
4272 | if (ipa_get_jf_pass_through_operation (jfunc) == NOP_EXPR) | |
4273 | map = ipa_get_jf_pass_through_formal_id (jfunc); | |
4274 | if (!ipa_get_jf_pass_through_agg_preserved (jfunc)) | |
4275 | offset_map[i] = -1; | |
4276 | } | |
4277 | else if (jfunc->type == IPA_JF_ANCESTOR) | |
4278 | { | |
4279 | HOST_WIDE_INT offset = ipa_get_jf_ancestor_offset (jfunc); | |
4280 | if (offset >= 0 && offset < INT_MAX) | |
4281 | { | |
4282 | map = ipa_get_jf_ancestor_formal_id (jfunc); | |
4283 | if (!ipa_get_jf_ancestor_agg_preserved (jfunc)) | |
4284 | offset = -1; | |
4285 | offset_map[i] = offset; | |
4286 | } | |
4287 | } | |
4288 | operand_map[i] = map; | |
40a777e8 | 4289 | gcc_assert (map < ipa_get_param_count (params_summary)); |
27d020cf | 4290 | } |
caaa218f JH |
4291 | |
4292 | int ip; | |
4293 | for (i = 0; callee_info->builtin_constant_p_parms.iterate (i, &ip); i++) | |
4294 | if (ip < count && operand_map[ip] >= 0) | |
4295 | add_builtin_constant_p_parm (info, operand_map[ip]); | |
27d020cf | 4296 | } |
caaa218f | 4297 | sreal freq = edge->sreal_frequency (); |
366099ff | 4298 | for (i = 0; callee_info->size_time_table.iterate (i, &e); i++) |
27d020cf | 4299 | { |
2d01bef2 | 4300 | ipa_predicate p; |
27d020cf | 4301 | p = e->exec_predicate.remap_after_inlining |
40a777e8 JH |
4302 | (info, params_summary, |
4303 | callee_info, operand_map, | |
27d020cf JH |
4304 | offset_map, clause, |
4305 | toplev_predicate); | |
2d01bef2 | 4306 | ipa_predicate nonconstp; |
27d020cf | 4307 | nonconstp = e->nonconst_predicate.remap_after_inlining |
40a777e8 JH |
4308 | (info, params_summary, |
4309 | callee_info, operand_map, | |
27d020cf JH |
4310 | offset_map, clause, |
4311 | toplev_predicate); | |
4312 | if (p != false && nonconstp != false) | |
4313 | { | |
83263ef5 | 4314 | sreal add_time = ((sreal)e->time * freq); |
27d020cf JH |
4315 | int prob = e->nonconst_predicate.probability (callee_info->conds, |
4316 | clause, es->param); | |
fd4656a2 JH |
4317 | if (prob != REG_BR_PROB_BASE) |
4318 | add_time = add_time * prob / REG_BR_PROB_BASE; | |
27d020cf JH |
4319 | if (prob != REG_BR_PROB_BASE |
4320 | && dump_file && (dump_flags & TDF_DETAILS)) | |
4321 | { | |
4322 | fprintf (dump_file, "\t\tScaling time by probability:%f\n", | |
4323 | (double) prob / REG_BR_PROB_BASE); | |
4324 | } | |
4325 | info->account_size_time (e->size, add_time, p, nonconstp); | |
4326 | } | |
4327 | } | |
40a777e8 JH |
4328 | remap_edge_summaries (edge, edge->callee, info, params_summary, |
4329 | callee_info, operand_map, | |
27d020cf | 4330 | offset_map, clause, &toplev_predicate); |
67ce9099 MJ |
4331 | remap_freqcounting_predicate (info, params_summary, callee_info, |
4332 | info->loop_iterations, operand_map, | |
4333 | offset_map, clause, &toplev_predicate); | |
4334 | remap_freqcounting_predicate (info, params_summary, callee_info, | |
4335 | info->loop_strides, operand_map, | |
4336 | offset_map, clause, &toplev_predicate); | |
27d020cf | 4337 | |
f658ad30 JH |
4338 | HOST_WIDE_INT stack_frame_offset = ipa_get_stack_frame_offset (edge->callee); |
4339 | HOST_WIDE_INT peak = stack_frame_offset + callee_info->estimated_stack_size; | |
27d020cf | 4340 | |
f658ad30 JH |
4341 | if (info->estimated_stack_size < peak) |
4342 | info->estimated_stack_size = peak; | |
4343 | ||
4344 | inline_update_callee_summaries (edge->callee, es->loop_depth); | |
366099ff | 4345 | if (info->call_size_time_table.length ()) |
d2bcf46c JH |
4346 | { |
4347 | int edge_size = 0; | |
4348 | sreal edge_time = 0; | |
4349 | ||
9d5af1db | 4350 | estimate_edge_size_and_time (edge, &edge_size, NULL, &edge_time, NULL, 0); |
d2bcf46c JH |
4351 | /* Unaccount size and time of the optimized out call. */ |
4352 | info->account_size_time (-edge_size, -edge_time, | |
4353 | es->predicate ? *es->predicate : true, | |
4354 | es->predicate ? *es->predicate : true, | |
4355 | true); | |
4356 | /* Account new calls. */ | |
4357 | summarize_calls_size_and_time (edge->callee, info); | |
4358 | } | |
f658ad30 JH |
4359 | |
4360 | /* Free summaries that are not maintained for inline clones/edges. */ | |
4361 | ipa_call_summaries->remove (edge); | |
4362 | ipa_fn_summaries->remove (edge->callee); | |
7237f93e | 4363 | ipa_remove_from_growth_caches (edge); |
27d020cf JH |
4364 | } |
4365 | ||
f658ad30 | 4366 | /* For performance reasons ipa_merge_fn_summary_after_inlining is not updating |
d2bcf46c JH |
4367 | overall size and time. Recompute it. |
4368 | If RESET is true also recompute call_time_size_table. */ | |
27d020cf JH |
4369 | |
4370 | void | |
d2bcf46c | 4371 | ipa_update_overall_fn_summary (struct cgraph_node *node, bool reset) |
27d020cf | 4372 | { |
7237f93e JH |
4373 | class ipa_fn_summary *info = ipa_fn_summaries->get (node); |
4374 | class ipa_size_summary *size_info = ipa_size_summaries->get (node); | |
27d020cf JH |
4375 | size_time_entry *e; |
4376 | int i; | |
4377 | ||
f658ad30 | 4378 | size_info->size = 0; |
27d020cf | 4379 | info->time = 0; |
366099ff | 4380 | for (i = 0; info->size_time_table.iterate (i, &e); i++) |
27d020cf | 4381 | { |
f658ad30 | 4382 | size_info->size += e->size; |
27d020cf JH |
4383 | info->time += e->time; |
4384 | } | |
366099ff | 4385 | info->min_size = info->size_time_table[0].size; |
d2bcf46c | 4386 | if (reset) |
366099ff | 4387 | info->call_size_time_table.release (); |
070e3489 JH |
4388 | if (node->callees || node->indirect_calls) |
4389 | estimate_calls_size_and_time (node, &size_info->size, &info->min_size, | |
4390 | &info->time, NULL, | |
2d01bef2 | 4391 | ~(clause_t) (1 << ipa_predicate::false_condition), |
9d5af1db | 4392 | NULL); |
e3bd08dd JH |
4393 | size_info->size = RDIV (size_info->size, ipa_fn_summary::size_scale); |
4394 | info->min_size = RDIV (info->min_size, ipa_fn_summary::size_scale); | |
27d020cf JH |
4395 | } |
4396 | ||
4397 | ||
4398 | /* This function performs intraprocedural analysis in NODE that is required to | |
4399 | inline indirect calls. */ | |
4400 | ||
4401 | static void | |
4402 | inline_indirect_intraprocedural_analysis (struct cgraph_node *node) | |
4403 | { | |
4404 | ipa_analyze_node (node); | |
4405 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
4406 | { | |
4407 | ipa_print_node_params (dump_file, node); | |
4408 | ipa_print_node_jump_functions (dump_file, node); | |
4409 | } | |
4410 | } | |
4411 | ||
4412 | ||
4413 | /* Note function body size. */ | |
4414 | ||
4415 | void | |
4416 | inline_analyze_function (struct cgraph_node *node) | |
4417 | { | |
4418 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
4419 | ||
4420 | if (dump_file) | |
d597b944 | 4421 | fprintf (dump_file, "\nAnalyzing function: %s\n", node->dump_name ()); |
67f3791f | 4422 | if (opt_for_fn (node->decl, optimize) && !node->thunk) |
27d020cf | 4423 | inline_indirect_intraprocedural_analysis (node); |
0bceb671 | 4424 | compute_fn_summary (node, false); |
27d020cf JH |
4425 | if (!optimize) |
4426 | { | |
4427 | struct cgraph_edge *e; | |
4428 | for (e = node->callees; e; e = e->next_callee) | |
4429 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4430 | for (e = node->indirect_calls; e; e = e->next_callee) | |
4431 | e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED; | |
4432 | } | |
4433 | ||
4434 | pop_cfun (); | |
4435 | } | |
4436 | ||
4437 | ||
4438 | /* Called when new function is inserted to callgraph late. */ | |
4439 | ||
4440 | void | |
0bceb671 | 4441 | ipa_fn_summary_t::insert (struct cgraph_node *node, ipa_fn_summary *) |
27d020cf JH |
4442 | { |
4443 | inline_analyze_function (node); | |
4444 | } | |
4445 | ||
4446 | /* Note function body size. */ | |
4447 | ||
d2db2e6b JH |
4448 | static void |
4449 | ipa_fn_summary_generate (void) | |
27d020cf JH |
4450 | { |
4451 | struct cgraph_node *node; | |
4452 | ||
4453 | FOR_EACH_DEFINED_FUNCTION (node) | |
4454 | if (DECL_STRUCT_FUNCTION (node->decl)) | |
87f94429 | 4455 | node->versionable = tree_versionable_function_p (node->decl); |
27d020cf | 4456 | |
0bceb671 | 4457 | ipa_fn_summary_alloc (); |
27d020cf | 4458 | |
0bceb671 | 4459 | ipa_fn_summaries->enable_insertion_hook (); |
27d020cf JH |
4460 | |
4461 | ipa_register_cgraph_hooks (); | |
27d020cf JH |
4462 | |
4463 | FOR_EACH_DEFINED_FUNCTION (node) | |
29f1e2b1 JH |
4464 | if (!node->alias |
4465 | && (flag_generate_lto || flag_generate_offload|| flag_wpa | |
4466 | || opt_for_fn (node->decl, optimize))) | |
27d020cf JH |
4467 | inline_analyze_function (node); |
4468 | } | |
4469 | ||
4470 | ||
4471 | /* Write inline summary for edge E to OB. */ | |
4472 | ||
4473 | static void | |
99b1c316 | 4474 | read_ipa_call_summary (class lto_input_block *ib, struct cgraph_edge *e, |
ddfb1317 | 4475 | bool prevails) |
27d020cf | 4476 | { |
99b1c316 | 4477 | class ipa_call_summary *es = prevails |
ddfb1317 | 4478 | ? ipa_call_summaries->get_create (e) : NULL; |
2d01bef2 | 4479 | ipa_predicate p; |
27d020cf JH |
4480 | int length, i; |
4481 | ||
ddfb1317 JH |
4482 | int size = streamer_read_uhwi (ib); |
4483 | int time = streamer_read_uhwi (ib); | |
4484 | int depth = streamer_read_uhwi (ib); | |
4485 | ||
4486 | if (es) | |
4487 | { | |
4488 | es->call_stmt_size = size; | |
4489 | es->call_stmt_time = time; | |
4490 | es->loop_depth = depth; | |
4491 | } | |
0fab169b PK |
4492 | |
4493 | bitpack_d bp = streamer_read_bitpack (ib); | |
ddfb1317 JH |
4494 | if (es) |
4495 | es->is_return_callee_uncaptured = bp_unpack_value (&bp, 1); | |
4496 | else | |
4497 | bp_unpack_value (&bp, 1); | |
0fab169b | 4498 | |
27d020cf | 4499 | p.stream_in (ib); |
ddfb1317 JH |
4500 | if (es) |
4501 | edge_set_predicate (e, &p); | |
27d020cf | 4502 | length = streamer_read_uhwi (ib); |
6cef01c3 JH |
4503 | if (length && es |
4504 | && (e->possibly_call_in_translation_unit_p () | |
4505 | /* Also stream in jump functions to builtins in hope that they | |
4506 | will get fnspecs. */ | |
4507 | || fndecl_built_in_p (e->callee->decl, BUILT_IN_NORMAL))) | |
27d020cf | 4508 | { |
cb3874dc | 4509 | es->param.safe_grow_cleared (length, true); |
27d020cf | 4510 | for (i = 0; i < length; i++) |
b89e4559 JH |
4511 | { |
4512 | es->param[i].change_prob = streamer_read_uhwi (ib); | |
5a1ef1cf | 4513 | bitpack_d bp = streamer_read_bitpack (ib); |
b89e4559 | 4514 | es->param[i].points_to_local_or_readonly_memory |
5a1ef1cf H |
4515 | = bp_unpack_value (&bp, 1); |
4516 | es->param[i].points_to_possible_sra_candidate | |
4517 | = bp_unpack_value (&bp, 1); | |
b89e4559 | 4518 | } |
27d020cf | 4519 | } |
ddfb1317 JH |
4520 | else |
4521 | { | |
4522 | for (i = 0; i < length; i++) | |
b89e4559 JH |
4523 | { |
4524 | streamer_read_uhwi (ib); | |
4525 | streamer_read_uhwi (ib); | |
4526 | } | |
ddfb1317 | 4527 | } |
27d020cf JH |
4528 | } |
4529 | ||
4530 | ||
4531 | /* Stream in inline summaries from the section. */ | |
4532 | ||
4533 | static void | |
4534 | inline_read_section (struct lto_file_decl_data *file_data, const char *data, | |
4535 | size_t len) | |
4536 | { | |
4537 | const struct lto_function_header *header = | |
4538 | (const struct lto_function_header *) data; | |
4539 | const int cfg_offset = sizeof (struct lto_function_header); | |
4540 | const int main_offset = cfg_offset + header->cfg_size; | |
4541 | const int string_offset = main_offset + header->main_size; | |
99b1c316 | 4542 | class data_in *data_in; |
27d020cf JH |
4543 | unsigned int i, count2, j; |
4544 | unsigned int f_count; | |
4545 | ||
4546 | lto_input_block ib ((const char *) data + main_offset, header->main_size, | |
d7faf7a5 | 4547 | file_data); |
27d020cf JH |
4548 | |
4549 | data_in = | |
4550 | lto_data_in_create (file_data, (const char *) data + string_offset, | |
4551 | header->string_size, vNULL); | |
4552 | f_count = streamer_read_uhwi (&ib); | |
4553 | for (i = 0; i < f_count; i++) | |
4554 | { | |
4555 | unsigned int index; | |
4556 | struct cgraph_node *node; | |
99b1c316 | 4557 | class ipa_fn_summary *info; |
40a777e8 | 4558 | class ipa_node_params *params_summary; |
f658ad30 | 4559 | class ipa_size_summary *size_info; |
27d020cf JH |
4560 | lto_symtab_encoder_t encoder; |
4561 | struct bitpack_d bp; | |
4562 | struct cgraph_edge *e; | |
2d01bef2 | 4563 | ipa_predicate p; |
27d020cf JH |
4564 | |
4565 | index = streamer_read_uhwi (&ib); | |
4566 | encoder = file_data->symtab_node_encoder; | |
4567 | node = dyn_cast<cgraph_node *> (lto_symtab_encoder_deref (encoder, | |
4568 | index)); | |
ddfb1317 | 4569 | info = node->prevailing_p () ? ipa_fn_summaries->get_create (node) : NULL; |
a4a3cdd0 MJ |
4570 | params_summary = node->prevailing_p () |
4571 | ? ipa_node_params_sum->get (node) : NULL; | |
f658ad30 JH |
4572 | size_info = node->prevailing_p () |
4573 | ? ipa_size_summaries->get_create (node) : NULL; | |
27d020cf | 4574 | |
ddfb1317 JH |
4575 | int stack_size = streamer_read_uhwi (&ib); |
4576 | int size = streamer_read_uhwi (&ib); | |
4577 | sreal time = sreal::stream_in (&ib); | |
4578 | ||
4579 | if (info) | |
4580 | { | |
4581 | info->estimated_stack_size | |
f658ad30 JH |
4582 | = size_info->estimated_self_stack_size = stack_size; |
4583 | size_info->size = size_info->self_size = size; | |
ddfb1317 JH |
4584 | info->time = time; |
4585 | } | |
27d020cf JH |
4586 | |
4587 | bp = streamer_read_bitpack (&ib); | |
ddfb1317 JH |
4588 | if (info) |
4589 | { | |
0fc60c18 KL |
4590 | info->inlinable = bp_unpack_value (&bp, 1); |
4591 | info->fp_expressions = bp_unpack_value (&bp, 1); | |
4592 | if (!lto_stream_offload_p) | |
4593 | info->target_info = streamer_read_uhwi (&ib); | |
ddfb1317 JH |
4594 | } |
4595 | else | |
4596 | { | |
0fc60c18 KL |
4597 | bp_unpack_value (&bp, 1); |
4598 | bp_unpack_value (&bp, 1); | |
4599 | if (!lto_stream_offload_p) | |
4600 | streamer_read_uhwi (&ib); | |
ddfb1317 | 4601 | } |
27d020cf JH |
4602 | |
4603 | count2 = streamer_read_uhwi (&ib); | |
ddfb1317 | 4604 | gcc_assert (!info || !info->conds); |
360386c7 JH |
4605 | if (info) |
4606 | vec_safe_reserve_exact (info->conds, count2); | |
27d020cf JH |
4607 | for (j = 0; j < count2; j++) |
4608 | { | |
4609 | struct condition c; | |
4307a485 | 4610 | unsigned int k, count3; |
27d020cf | 4611 | c.operand_num = streamer_read_uhwi (&ib); |
27d020cf | 4612 | c.code = (enum tree_code) streamer_read_uhwi (&ib); |
4307a485 | 4613 | c.type = stream_read_tree (&ib, data_in); |
27d020cf JH |
4614 | c.val = stream_read_tree (&ib, data_in); |
4615 | bp = streamer_read_bitpack (&ib); | |
4616 | c.agg_contents = bp_unpack_value (&bp, 1); | |
4617 | c.by_ref = bp_unpack_value (&bp, 1); | |
4618 | if (c.agg_contents) | |
4619 | c.offset = streamer_read_uhwi (&ib); | |
4307a485 | 4620 | count3 = streamer_read_uhwi (&ib); |
360386c7 JH |
4621 | c.param_ops = NULL; |
4622 | if (info) | |
4623 | vec_safe_reserve_exact (c.param_ops, count3); | |
40a777e8 JH |
4624 | if (params_summary) |
4625 | ipa_set_param_used_by_ipa_predicates | |
4626 | (params_summary, c.operand_num, true); | |
4307a485 FX |
4627 | for (k = 0; k < count3; k++) |
4628 | { | |
4629 | struct expr_eval_op op; | |
4630 | enum gimple_rhs_class rhs_class; | |
4631 | op.code = (enum tree_code) streamer_read_uhwi (&ib); | |
4632 | op.type = stream_read_tree (&ib, data_in); | |
4633 | switch (rhs_class = get_gimple_rhs_class (op.code)) | |
4634 | { | |
4635 | case GIMPLE_UNARY_RHS: | |
4636 | op.index = 0; | |
4637 | op.val[0] = NULL_TREE; | |
4638 | op.val[1] = NULL_TREE; | |
4639 | break; | |
4640 | ||
4641 | case GIMPLE_BINARY_RHS: | |
4642 | case GIMPLE_TERNARY_RHS: | |
4643 | bp = streamer_read_bitpack (&ib); | |
4644 | op.index = bp_unpack_value (&bp, 2); | |
4645 | op.val[0] = stream_read_tree (&ib, data_in); | |
4646 | if (rhs_class == GIMPLE_BINARY_RHS) | |
4647 | op.val[1] = NULL_TREE; | |
4648 | else | |
4649 | op.val[1] = stream_read_tree (&ib, data_in); | |
4650 | break; | |
4651 | ||
4652 | default: | |
4653 | fatal_error (UNKNOWN_LOCATION, | |
4654 | "invalid fnsummary in LTO stream"); | |
4655 | } | |
360386c7 JH |
4656 | if (info) |
4657 | c.param_ops->quick_push (op); | |
4307a485 | 4658 | } |
ddfb1317 | 4659 | if (info) |
360386c7 | 4660 | info->conds->quick_push (c); |
27d020cf JH |
4661 | } |
4662 | count2 = streamer_read_uhwi (&ib); | |
366099ff | 4663 | gcc_assert (!info || !info->size_time_table.length ()); |
360386c7 | 4664 | if (info && count2) |
366099ff | 4665 | info->size_time_table.reserve_exact (count2); |
27d020cf JH |
4666 | for (j = 0; j < count2; j++) |
4667 | { | |
99b1c316 | 4668 | class size_time_entry e; |
27d020cf JH |
4669 | |
4670 | e.size = streamer_read_uhwi (&ib); | |
4671 | e.time = sreal::stream_in (&ib); | |
4672 | e.exec_predicate.stream_in (&ib); | |
4673 | e.nonconst_predicate.stream_in (&ib); | |
4674 | ||
ddfb1317 | 4675 | if (info) |
366099ff | 4676 | info->size_time_table.quick_push (e); |
27d020cf JH |
4677 | } |
4678 | ||
67ce9099 MJ |
4679 | count2 = streamer_read_uhwi (&ib); |
4680 | for (j = 0; j < count2; j++) | |
4681 | { | |
4682 | p.stream_in (&ib); | |
4683 | sreal fcp_freq = sreal::stream_in (&ib); | |
4684 | if (info) | |
4685 | { | |
4686 | ipa_freqcounting_predicate fcp; | |
4687 | fcp.predicate = NULL; | |
4688 | set_hint_predicate (&fcp.predicate, p); | |
4689 | fcp.freq = fcp_freq; | |
4690 | vec_safe_push (info->loop_iterations, fcp); | |
4691 | } | |
4692 | } | |
4693 | count2 = streamer_read_uhwi (&ib); | |
4694 | for (j = 0; j < count2; j++) | |
4695 | { | |
4696 | p.stream_in (&ib); | |
4697 | sreal fcp_freq = sreal::stream_in (&ib); | |
4698 | if (info) | |
4699 | { | |
4700 | ipa_freqcounting_predicate fcp; | |
4701 | fcp.predicate = NULL; | |
4702 | set_hint_predicate (&fcp.predicate, p); | |
4703 | fcp.freq = fcp_freq; | |
4704 | vec_safe_push (info->loop_strides, fcp); | |
4705 | } | |
4706 | } | |
caaa218f JH |
4707 | count2 = streamer_read_uhwi (&ib); |
4708 | if (info && count2) | |
4709 | info->builtin_constant_p_parms.reserve_exact (count2); | |
4710 | for (j = 0; j < count2; j++) | |
4711 | { | |
4712 | int parm = streamer_read_uhwi (&ib); | |
4713 | if (info) | |
4714 | info->builtin_constant_p_parms.quick_push (parm); | |
4715 | } | |
27d020cf | 4716 | for (e = node->callees; e; e = e->next_callee) |
ddfb1317 | 4717 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf | 4718 | for (e = node->indirect_calls; e; e = e->next_callee) |
ddfb1317 | 4719 | read_ipa_call_summary (&ib, e, info != NULL); |
27d020cf JH |
4720 | } |
4721 | ||
0bceb671 | 4722 | lto_free_section_data (file_data, LTO_section_ipa_fn_summary, NULL, data, |
27d020cf JH |
4723 | len); |
4724 | lto_data_in_delete (data_in); | |
4725 | } | |
4726 | ||
4727 | ||
4728 | /* Read inline summary. Jump functions are shared among ipa-cp | |
4729 | and inliner, so when ipa-cp is active, we don't need to write them | |
4730 | twice. */ | |
4731 | ||
d2db2e6b JH |
4732 | static void |
4733 | ipa_fn_summary_read (void) | |
27d020cf JH |
4734 | { |
4735 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
4736 | struct lto_file_decl_data *file_data; | |
4737 | unsigned int j = 0; | |
4738 | ||
568de14d | 4739 | ipa_prop_read_jump_functions (); |
0bceb671 | 4740 | ipa_fn_summary_alloc (); |
27d020cf JH |
4741 | |
4742 | while ((file_data = file_data_vec[j++])) | |
4743 | { | |
4744 | size_t len; | |
3c56d8d8 ML |
4745 | const char *data |
4746 | = lto_get_summary_section_data (file_data, LTO_section_ipa_fn_summary, | |
4747 | &len); | |
27d020cf JH |
4748 | if (data) |
4749 | inline_read_section (file_data, data, len); | |
4750 | else | |
4751 | /* Fatal error here. We do not want to support compiling ltrans units | |
4752 | with different version of compiler or different flags than the WPA | |
4753 | unit, so this should never happen. */ | |
4754 | fatal_error (input_location, | |
4755 | "ipa inline summary is missing in input file"); | |
4756 | } | |
29f1e2b1 | 4757 | ipa_register_cgraph_hooks (); |
27d020cf | 4758 | |
0bceb671 JH |
4759 | gcc_assert (ipa_fn_summaries); |
4760 | ipa_fn_summaries->enable_insertion_hook (); | |
27d020cf JH |
4761 | } |
4762 | ||
4763 | ||
4764 | /* Write inline summary for edge E to OB. */ | |
4765 | ||
4766 | static void | |
4767 | write_ipa_call_summary (struct output_block *ob, struct cgraph_edge *e) | |
4768 | { | |
99b1c316 | 4769 | class ipa_call_summary *es = ipa_call_summaries->get (e); |
27d020cf JH |
4770 | int i; |
4771 | ||
4772 | streamer_write_uhwi (ob, es->call_stmt_size); | |
4773 | streamer_write_uhwi (ob, es->call_stmt_time); | |
4774 | streamer_write_uhwi (ob, es->loop_depth); | |
0fab169b PK |
4775 | |
4776 | bitpack_d bp = bitpack_create (ob->main_stream); | |
4777 | bp_pack_value (&bp, es->is_return_callee_uncaptured, 1); | |
4778 | streamer_write_bitpack (&bp); | |
4779 | ||
27d020cf JH |
4780 | if (es->predicate) |
4781 | es->predicate->stream_out (ob); | |
4782 | else | |
4783 | streamer_write_uhwi (ob, 0); | |
4784 | streamer_write_uhwi (ob, es->param.length ()); | |
4785 | for (i = 0; i < (int) es->param.length (); i++) | |
b89e4559 JH |
4786 | { |
4787 | streamer_write_uhwi (ob, es->param[i].change_prob); | |
5a1ef1cf H |
4788 | bp = bitpack_create (ob->main_stream); |
4789 | bp_pack_value (&bp, es->param[i].points_to_local_or_readonly_memory, 1); | |
4790 | bp_pack_value (&bp, es->param[i].points_to_possible_sra_candidate, 1); | |
4791 | streamer_write_bitpack (&bp); | |
b89e4559 | 4792 | } |
27d020cf JH |
4793 | } |
4794 | ||
4795 | ||
4796 | /* Write inline summary for node in SET. | |
4797 | Jump functions are shared among ipa-cp and inliner, so when ipa-cp is | |
4798 | active, we don't need to write them twice. */ | |
4799 | ||
d2db2e6b JH |
4800 | static void |
4801 | ipa_fn_summary_write (void) | |
27d020cf | 4802 | { |
0bceb671 | 4803 | struct output_block *ob = create_output_block (LTO_section_ipa_fn_summary); |
16570c12 | 4804 | lto_symtab_encoder_iterator lsei; |
27d020cf JH |
4805 | lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder; |
4806 | unsigned int count = 0; | |
27d020cf | 4807 | |
16570c12 JJ |
4808 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4809 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4810 | { |
16570c12 JJ |
4811 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4812 | if (cnode->definition && !cnode->alias) | |
27d020cf JH |
4813 | count++; |
4814 | } | |
4815 | streamer_write_uhwi (ob, count); | |
4816 | ||
16570c12 JJ |
4817 | for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); |
4818 | lsei_next_function_in_partition (&lsei)) | |
27d020cf | 4819 | { |
16570c12 JJ |
4820 | cgraph_node *cnode = lsei_cgraph_node (lsei); |
4821 | if (cnode->definition && !cnode->alias) | |
27d020cf | 4822 | { |
99b1c316 | 4823 | class ipa_fn_summary *info = ipa_fn_summaries->get (cnode); |
f658ad30 | 4824 | class ipa_size_summary *size_info = ipa_size_summaries->get (cnode); |
27d020cf JH |
4825 | struct bitpack_d bp; |
4826 | struct cgraph_edge *edge; | |
4827 | int i; | |
4828 | size_time_entry *e; | |
4829 | struct condition *c; | |
4830 | ||
4831 | streamer_write_uhwi (ob, lto_symtab_encoder_encode (encoder, cnode)); | |
f658ad30 JH |
4832 | streamer_write_hwi (ob, size_info->estimated_self_stack_size); |
4833 | streamer_write_hwi (ob, size_info->self_size); | |
27d020cf JH |
4834 | info->time.stream_out (ob); |
4835 | bp = bitpack_create (ob->main_stream); | |
4836 | bp_pack_value (&bp, info->inlinable, 1); | |
27d020cf JH |
4837 | bp_pack_value (&bp, info->fp_expressions, 1); |
4838 | streamer_write_bitpack (&bp); | |
0fc60c18 KL |
4839 | if (!lto_stream_offload_p) |
4840 | streamer_write_uhwi (ob, info->target_info); | |
27d020cf JH |
4841 | streamer_write_uhwi (ob, vec_safe_length (info->conds)); |
4842 | for (i = 0; vec_safe_iterate (info->conds, i, &c); i++) | |
4843 | { | |
4307a485 FX |
4844 | int j; |
4845 | struct expr_eval_op *op; | |
4846 | ||
27d020cf | 4847 | streamer_write_uhwi (ob, c->operand_num); |
27d020cf | 4848 | streamer_write_uhwi (ob, c->code); |
4307a485 | 4849 | stream_write_tree (ob, c->type, true); |
27d020cf JH |
4850 | stream_write_tree (ob, c->val, true); |
4851 | bp = bitpack_create (ob->main_stream); | |
4852 | bp_pack_value (&bp, c->agg_contents, 1); | |
4853 | bp_pack_value (&bp, c->by_ref, 1); | |
4854 | streamer_write_bitpack (&bp); | |
4855 | if (c->agg_contents) | |
4856 | streamer_write_uhwi (ob, c->offset); | |
4307a485 FX |
4857 | streamer_write_uhwi (ob, vec_safe_length (c->param_ops)); |
4858 | for (j = 0; vec_safe_iterate (c->param_ops, j, &op); j++) | |
4859 | { | |
4860 | streamer_write_uhwi (ob, op->code); | |
4861 | stream_write_tree (ob, op->type, true); | |
4862 | if (op->val[0]) | |
4863 | { | |
4864 | bp = bitpack_create (ob->main_stream); | |
4865 | bp_pack_value (&bp, op->index, 2); | |
4866 | streamer_write_bitpack (&bp); | |
4867 | stream_write_tree (ob, op->val[0], true); | |
4868 | if (op->val[1]) | |
4869 | stream_write_tree (ob, op->val[1], true); | |
4870 | } | |
4871 | } | |
27d020cf | 4872 | } |
366099ff JH |
4873 | streamer_write_uhwi (ob, info->size_time_table.length ()); |
4874 | for (i = 0; info->size_time_table.iterate (i, &e); i++) | |
27d020cf JH |
4875 | { |
4876 | streamer_write_uhwi (ob, e->size); | |
4877 | e->time.stream_out (ob); | |
4878 | e->exec_predicate.stream_out (ob); | |
4879 | e->nonconst_predicate.stream_out (ob); | |
4880 | } | |
67ce9099 MJ |
4881 | ipa_freqcounting_predicate *fcp; |
4882 | streamer_write_uhwi (ob, vec_safe_length (info->loop_iterations)); | |
4883 | for (i = 0; vec_safe_iterate (info->loop_iterations, i, &fcp); i++) | |
4884 | { | |
4885 | fcp->predicate->stream_out (ob); | |
4886 | fcp->freq.stream_out (ob); | |
4887 | } | |
4888 | streamer_write_uhwi (ob, vec_safe_length (info->loop_strides)); | |
4889 | for (i = 0; vec_safe_iterate (info->loop_strides, i, &fcp); i++) | |
4890 | { | |
4891 | fcp->predicate->stream_out (ob); | |
4892 | fcp->freq.stream_out (ob); | |
4893 | } | |
caaa218f JH |
4894 | streamer_write_uhwi (ob, info->builtin_constant_p_parms.length ()); |
4895 | int ip; | |
4896 | for (i = 0; info->builtin_constant_p_parms.iterate (i, &ip); | |
4897 | i++) | |
4898 | streamer_write_uhwi (ob, ip); | |
27d020cf JH |
4899 | for (edge = cnode->callees; edge; edge = edge->next_callee) |
4900 | write_ipa_call_summary (ob, edge); | |
4901 | for (edge = cnode->indirect_calls; edge; edge = edge->next_callee) | |
4902 | write_ipa_call_summary (ob, edge); | |
4903 | } | |
4904 | } | |
4905 | streamer_write_char_stream (ob->main_stream, 0); | |
4906 | produce_asm (ob, NULL); | |
4907 | destroy_output_block (ob); | |
4908 | ||
568de14d | 4909 | ipa_prop_write_jump_functions (); |
27d020cf JH |
4910 | } |
4911 | ||
4912 | ||
f658ad30 | 4913 | /* Release function summary. */ |
27d020cf JH |
4914 | |
4915 | void | |
d2db2e6b | 4916 | ipa_free_fn_summary (void) |
27d020cf | 4917 | { |
27d020cf JH |
4918 | if (!ipa_call_summaries) |
4919 | return; | |
ddf628e4 | 4920 | ggc_delete (ipa_fn_summaries); |
0bceb671 | 4921 | ipa_fn_summaries = NULL; |
27d020cf JH |
4922 | delete ipa_call_summaries; |
4923 | ipa_call_summaries = NULL; | |
4924 | edge_predicate_pool.release (); | |
f658ad30 JH |
4925 | /* During IPA this is one of largest datastructures to release. */ |
4926 | if (flag_wpa) | |
4927 | ggc_trim (); | |
4928 | } | |
4929 | ||
4930 | /* Release function summary. */ | |
4931 | ||
4932 | void | |
4933 | ipa_free_size_summary (void) | |
4934 | { | |
4935 | if (!ipa_size_summaries) | |
4936 | return; | |
78cd68c0 | 4937 | delete ipa_size_summaries; |
f658ad30 | 4938 | ipa_size_summaries = NULL; |
27d020cf | 4939 | } |
d2db2e6b JH |
4940 | |
4941 | namespace { | |
4942 | ||
4943 | const pass_data pass_data_local_fn_summary = | |
4944 | { | |
4945 | GIMPLE_PASS, /* type */ | |
4946 | "local-fnsummary", /* name */ | |
4947 | OPTGROUP_INLINE, /* optinfo_flags */ | |
4948 | TV_INLINE_PARAMETERS, /* tv_id */ | |
4949 | 0, /* properties_required */ | |
4950 | 0, /* properties_provided */ | |
4951 | 0, /* properties_destroyed */ | |
4952 | 0, /* todo_flags_start */ | |
4953 | 0, /* todo_flags_finish */ | |
4954 | }; | |
4955 | ||
4956 | class pass_local_fn_summary : public gimple_opt_pass | |
4957 | { | |
4958 | public: | |
4959 | pass_local_fn_summary (gcc::context *ctxt) | |
4960 | : gimple_opt_pass (pass_data_local_fn_summary, ctxt) | |
4961 | {} | |
4962 | ||
4963 | /* opt_pass methods: */ | |
725793af DM |
4964 | opt_pass * clone () final override |
4965 | { | |
4966 | return new pass_local_fn_summary (m_ctxt); | |
4967 | } | |
4968 | unsigned int execute (function *) final override | |
d2db2e6b JH |
4969 | { |
4970 | return compute_fn_summary_for_current (); | |
4971 | } | |
4972 | ||
4973 | }; // class pass_local_fn_summary | |
4974 | ||
4975 | } // anon namespace | |
4976 | ||
4977 | gimple_opt_pass * | |
4978 | make_pass_local_fn_summary (gcc::context *ctxt) | |
4979 | { | |
4980 | return new pass_local_fn_summary (ctxt); | |
4981 | } | |
4982 | ||
4983 | ||
4984 | /* Free inline summary. */ | |
4985 | ||
4986 | namespace { | |
4987 | ||
4988 | const pass_data pass_data_ipa_free_fn_summary = | |
4989 | { | |
4990 | SIMPLE_IPA_PASS, /* type */ | |
4991 | "free-fnsummary", /* name */ | |
4992 | OPTGROUP_NONE, /* optinfo_flags */ | |
4993 | TV_IPA_FREE_INLINE_SUMMARY, /* tv_id */ | |
4994 | 0, /* properties_required */ | |
4995 | 0, /* properties_provided */ | |
4996 | 0, /* properties_destroyed */ | |
4997 | 0, /* todo_flags_start */ | |
442db276 | 4998 | 0, /* todo_flags_finish */ |
d2db2e6b JH |
4999 | }; |
5000 | ||
5001 | class pass_ipa_free_fn_summary : public simple_ipa_opt_pass | |
5002 | { | |
5003 | public: | |
5004 | pass_ipa_free_fn_summary (gcc::context *ctxt) | |
442db276 JJ |
5005 | : simple_ipa_opt_pass (pass_data_ipa_free_fn_summary, ctxt), |
5006 | small_p (false) | |
d2db2e6b JH |
5007 | {} |
5008 | ||
5009 | /* opt_pass methods: */ | |
725793af DM |
5010 | opt_pass *clone () final override |
5011 | { | |
5012 | return new pass_ipa_free_fn_summary (m_ctxt); | |
5013 | } | |
5014 | void set_pass_param (unsigned int n, bool param) final override | |
442db276 JJ |
5015 | { |
5016 | gcc_assert (n == 0); | |
5017 | small_p = param; | |
5018 | } | |
725793af DM |
5019 | bool gate (function *) final override { return true; } |
5020 | unsigned int execute (function *) final override | |
d2db2e6b JH |
5021 | { |
5022 | ipa_free_fn_summary (); | |
bc2fcccd JH |
5023 | /* Free ipa-prop structures if they are no longer needed. */ |
5024 | ipa_free_all_structures_after_iinln (); | |
f658ad30 JH |
5025 | if (!flag_wpa) |
5026 | ipa_free_size_summary (); | |
12485662 | 5027 | return 0; |
d2db2e6b JH |
5028 | } |
5029 | ||
442db276 JJ |
5030 | private: |
5031 | bool small_p; | |
d2db2e6b JH |
5032 | }; // class pass_ipa_free_fn_summary |
5033 | ||
5034 | } // anon namespace | |
5035 | ||
5036 | simple_ipa_opt_pass * | |
5037 | make_pass_ipa_free_fn_summary (gcc::context *ctxt) | |
5038 | { | |
5039 | return new pass_ipa_free_fn_summary (ctxt); | |
5040 | } | |
5041 | ||
5042 | namespace { | |
5043 | ||
5044 | const pass_data pass_data_ipa_fn_summary = | |
5045 | { | |
5046 | IPA_PASS, /* type */ | |
5047 | "fnsummary", /* name */ | |
5048 | OPTGROUP_INLINE, /* optinfo_flags */ | |
66447ef0 | 5049 | TV_IPA_FNSUMMARY, /* tv_id */ |
d2db2e6b JH |
5050 | 0, /* properties_required */ |
5051 | 0, /* properties_provided */ | |
5052 | 0, /* properties_destroyed */ | |
5053 | 0, /* todo_flags_start */ | |
5054 | ( TODO_dump_symtab ), /* todo_flags_finish */ | |
5055 | }; | |
5056 | ||
5057 | class pass_ipa_fn_summary : public ipa_opt_pass_d | |
5058 | { | |
5059 | public: | |
5060 | pass_ipa_fn_summary (gcc::context *ctxt) | |
5061 | : ipa_opt_pass_d (pass_data_ipa_fn_summary, ctxt, | |
5062 | ipa_fn_summary_generate, /* generate_summary */ | |
5063 | ipa_fn_summary_write, /* write_summary */ | |
5064 | ipa_fn_summary_read, /* read_summary */ | |
5065 | NULL, /* write_optimization_summary */ | |
5066 | NULL, /* read_optimization_summary */ | |
5067 | NULL, /* stmt_fixup */ | |
5068 | 0, /* function_transform_todo_flags_start */ | |
5069 | NULL, /* function_transform */ | |
5070 | NULL) /* variable_transform */ | |
5071 | {} | |
5072 | ||
5073 | /* opt_pass methods: */ | |
725793af | 5074 | unsigned int execute (function *) final override { return 0; } |
d2db2e6b JH |
5075 | |
5076 | }; // class pass_ipa_fn_summary | |
5077 | ||
5078 | } // anon namespace | |
5079 | ||
5080 | ipa_opt_pass_d * | |
5081 | make_pass_ipa_fn_summary (gcc::context *ctxt) | |
5082 | { | |
5083 | return new pass_ipa_fn_summary (ctxt); | |
5084 | } | |
de4381a4 | 5085 | |
e53b6e56 | 5086 | /* Reset all state within ipa-fnsummary.cc so that we can rerun the compiler |
de4381a4 DM |
5087 | within the same process. For use by toplev::finalize. */ |
5088 | ||
5089 | void | |
d5148d4f | 5090 | ipa_fnsummary_cc_finalize (void) |
de4381a4 DM |
5091 | { |
5092 | ipa_free_fn_summary (); | |
5093 | } |