Line data Source code
1 : /* Interprocedural analyses.
2 : Copyright (C) 2005-2026 Free Software Foundation, Inc.
3 :
4 : This file is part of GCC.
5 :
6 : GCC is free software; you can redistribute it and/or modify it under
7 : the terms of the GNU General Public License as published by the Free
8 : Software Foundation; either version 3, or (at your option) any later
9 : version.
10 :
11 : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 : WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 : for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with GCC; see the file COPYING3. If not see
18 : <http://www.gnu.org/licenses/>. */
19 :
20 : #ifndef IPA_PROP_H
21 : #define IPA_PROP_H
22 :
23 : /* The following definitions and interfaces are used by
24 : interprocedural analyses or parameters. */
25 :
26 : #define IPA_UNDESCRIBED_USE -1
27 :
28 : /* Index identifying an actualargument or a formal parameter may have only this
29 : many bits. */
30 :
31 : #define IPA_PROP_ARG_INDEX_LIMIT_BITS 16
32 :
33 : /* ipa-prop.cc stuff (ipa-cp, indirect inlining): */
34 :
35 : /* A jump function for a callsite represents the values passed as actual
36 : arguments of the callsite. They were originally proposed in a paper called
37 : "Interprocedural Constant Propagation", by David Callahan, Keith D Cooper,
38 : Ken Kennedy, Linda Torczon in Comp86, pg 152-161. There are three main
39 : types of values :
40 :
41 : Pass-through - the caller's formal parameter is passed as an actual
42 : argument, possibly one simple operation performed on it.
43 : Constant - a constant (is_gimple_ip_invariant)is passed as an actual
44 : argument.
45 : Unknown - neither of the above.
46 :
47 : IPA_JF_LOAD_AGG is a compound pass-through jump function, in which primary
48 : operation on formal parameter is memory dereference that loads a value from
49 : a part of an aggregate, which is represented or pointed to by the formal
50 : parameter. Moreover, an additional unary/binary operation can be applied on
51 : the loaded value, and final result is passed as actual argument of callee
52 : (e.g. *(param_1(D) + 4) op 24 ). It is meant to describe usage of aggregate
53 : parameter or by-reference parameter referenced in argument passing, commonly
54 : found in C++ and Fortran.
55 :
56 : IPA_JF_ANCESTOR is a special pass-through jump function, which means that
57 : the result is an address of a part of the object pointed to by the formal
58 : parameter to which the function refers. It is mainly intended to represent
59 : getting addresses of ancestor fields in C++
60 : (e.g. &this_1(D)->D.1766.D.1756). Note that if the original pointer is
61 : NULL, ancestor jump function must behave like a simple pass-through.
62 :
63 : Other pass-through functions can either simply pass on an unchanged formal
64 : parameter or can apply one simple binary operation to it (such jump
65 : functions are called polynomial).
66 :
67 : Jump functions are computed in ipa-prop.cc by function
68 : update_call_notes_after_inlining. Some information can be lost and jump
69 : functions degraded accordingly when inlining, see
70 : update_call_notes_after_inlining in the same file. */
71 :
72 : enum jump_func_type
73 : {
74 : IPA_JF_UNKNOWN = 0, /* newly allocated and zeroed jump functions default */
75 : IPA_JF_CONST, /* represented by field constant */
76 : IPA_JF_PASS_THROUGH, /* represented by field pass_through */
77 : IPA_JF_LOAD_AGG, /* represented by field load_agg */
78 : IPA_JF_ANCESTOR /* represented by field ancestor */
79 : };
80 :
81 : struct ipa_cst_ref_desc;
82 :
83 : /* Structure holding data required to describe a constant jump function. */
84 : struct GTY(()) ipa_constant_data
85 : {
86 : /* The value of the constant. */
87 : tree value;
88 : /* Pointer to the structure that describes the reference. */
89 : struct ipa_cst_ref_desc GTY((skip)) *rdesc;
90 : };
91 :
92 : /* Structure holding data required to describe a pass-through jump function. */
93 :
94 : struct GTY(()) ipa_pass_through_data
95 : {
96 : /* If an operation is to be performed on the original parameter, this is the
97 : second (constant) operand. */
98 : tree operand;
99 : /* The result type of the operation. In case of no operation (represented by
100 : NOP_EXPR) it should be NULL_TREE. */
101 : tree op_type;
102 : /* Number of the caller's formal parameter being passed. */
103 : int formal_id;
104 : /* Operation that is performed on the argument before it is passed on.
105 : Special values which have other meaning than in normal contexts:
106 : - NOP_EXPR means no operation, not even type conversion.
107 : - ASSERT_EXPR means that only the value in operand is allowed to pass
108 : through (without any change), for all other values the result is
109 : unknown.
110 : Otherwise operation must be a simple binary or unary arithmetic operation
111 : where the caller's parameter is the first operand and (for binary
112 : operations) the operand field from this structure is the second one. */
113 : enum tree_code operation;
114 : /* When the passed value is a pointer, it is set to true only when we are
115 : certain that no write to the object it points to has occurred since the
116 : caller functions started execution, except for changes noted in the
117 : aggregate part of the jump function (see description of
118 : ipa_agg_jump_function). The flag is used only when the operation is
119 : NOP_EXPR. */
120 : unsigned agg_preserved : 1;
121 : /* Set when the edge has already been used to decrement an appropriate
122 : reference description counter and should not be decremented again. */
123 : unsigned refdesc_decremented : 1;
124 : };
125 :
126 : /* Structure holding data required to describe a load-value-from-aggregate
127 : jump function. */
128 :
129 : struct GTY(()) ipa_load_agg_data
130 : {
131 : /* Inherit from pass through jump function, describing unary/binary
132 : operation on the value loaded from aggregate that is represented or
133 : pointed to by the formal parameter, specified by formal_id in this
134 : pass_through jump function data structure. */
135 : struct ipa_pass_through_data pass_through;
136 : /* Type of the value loaded from the aggregate. */
137 : tree type;
138 : /* Offset at which the value is located within the aggregate. */
139 : HOST_WIDE_INT offset;
140 : /* True if loaded by reference (the aggregate is pointed to by the formal
141 : parameter) or false if loaded by value (the aggregate is represented
142 : by the formal parameter). */
143 : bool by_ref;
144 : };
145 :
146 : /* Structure holding data required to describe an ancestor pass-through
147 : jump function. */
148 :
149 : struct GTY(()) ipa_ancestor_jf_data
150 : {
151 : /* Offset of the field representing the ancestor. */
152 : HOST_WIDE_INT offset;
153 : /* Number of the caller's formal parameter being passed. */
154 : int formal_id;
155 : /* Flag with the same meaning like agg_preserve in ipa_pass_through_data. */
156 : unsigned agg_preserved : 1;
157 : /* When set, the operation should not have any effect on NULL pointers. */
158 : unsigned keep_null : 1;
159 : };
160 :
161 : /* A jump function for an aggregate part at a given offset, which describes how
162 : it content value is generated. All unlisted positions are assumed to have a
163 : value defined in an unknown way. */
164 :
165 : struct GTY(()) ipa_agg_jf_item
166 : {
167 : /* The offset for the aggregate part. */
168 : HOST_WIDE_INT offset;
169 :
170 : /* Data type of the aggregate part. */
171 : tree type;
172 :
173 : /* Jump function type. */
174 : enum jump_func_type jftype;
175 :
176 : /* Represents a value of jump function. constant represents the actual constant
177 : in constant jump function content. pass_through is used only in simple pass
178 : through jump function context. load_agg is for load-value-from-aggregate
179 : jump function context. */
180 : union jump_func_agg_value
181 : {
182 : tree GTY ((tag ("IPA_JF_CONST"))) constant;
183 : struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through;
184 : struct ipa_load_agg_data GTY ((tag ("IPA_JF_LOAD_AGG"))) load_agg;
185 : } GTY ((desc ("%1.jftype"))) value;
186 : };
187 :
188 : /* Jump functions describing a set of aggregate contents. */
189 :
190 : struct GTY(()) ipa_agg_jump_function
191 : {
192 : /* Description of the individual jump function item. */
193 : vec<ipa_agg_jf_item, va_gc> *items;
194 : /* True if the data was passed by reference (as opposed to by value). */
195 : bool by_ref;
196 : };
197 :
198 : class ipcp_transformation;
199 : class ipa_auto_call_arg_values;
200 : class ipa_call_arg_values;
201 :
202 : /* Element of a vector describing aggregate values for a number of arguments in
203 : a particular context, be it a call or the aggregate constants that a node is
204 : specialized for. */
205 :
206 : struct GTY(()) ipa_argagg_value
207 : {
208 : /* The constant value. In the contexts where the list of known values is
209 : being pruned, NULL means a variable value. */
210 : tree value;
211 : /* Unit offset within the aggregate. */
212 : unsigned unit_offset;
213 : /* Index of the parameter, as it was in the original function (i.e. needs
214 : remapping after parameter modification is carried out as part of clone
215 : materialization). */
216 : unsigned index : IPA_PROP_ARG_INDEX_LIMIT_BITS;
217 : /* Whether the value was passed by reference. */
218 : unsigned by_ref : 1;
219 : /* Set if the value should not be used after materialization in
220 : value_numbering. It is kept around just so that clone materialization can
221 : distinguish a combined IPA-CP and IPA-SRA from a deleted argument. */
222 : unsigned killed : 1;
223 : };
224 :
225 : /* A view into a sorted list of aggregate values in a particular context, be it
226 : a call or the aggregate constants that a node is specialized for. The
227 : actual data is stored in the vector this has been constructed from. */
228 :
229 : class ipa_argagg_value_list
230 : {
231 : public:
232 : ipa_argagg_value_list () = delete;
233 3455 : ipa_argagg_value_list (const vec<ipa_argagg_value, va_gc> *values)
234 6813 : : m_elts (values)
235 : {}
236 53194 : ipa_argagg_value_list (const vec<ipa_argagg_value> *values)
237 106388 : : m_elts (*values)
238 : {}
239 : ipa_argagg_value_list (const ipa_auto_call_arg_values *aavals);
240 : ipa_argagg_value_list (const ipa_call_arg_values *gavals);
241 : ipa_argagg_value_list (const ipcp_transformation *tinfo);
242 :
243 : /* Return the aggregate constant stored for INDEX at UNIT_OFFSET, if it is
244 : passed by reference or not according to BY_REF, or NULL_TREE
245 : otherwise. */
246 :
247 : tree get_value (int index, unsigned unit_offset, bool by_ref) const;
248 :
249 : /* Return the aggregate constant stored for INDEX at UNIT_OFFSET, not
250 : performing any check of whether value is passed by reference. Return
251 : NULL_TREE if there is no such constant. */
252 :
253 : tree get_value (int index, unsigned unit_offset) const;
254 :
255 : /* Return the item describing a constant stored for INDEX at UNIT_OFFSET or
256 : NULL if there is no such constant. */
257 :
258 : const ipa_argagg_value *get_elt (int index, unsigned unit_offset) const;
259 :
260 :
261 : /* Return the first item describing a constant stored for parameter with
262 : INDEX, regardless of offset or reference, or NULL if there is no such
263 : constant. */
264 :
265 : const ipa_argagg_value *get_elt_for_index (int index) const;
266 :
267 : /* Return true if there is an aggregate constant referring to a value passed
268 : in or by parameter with INDEX (at any offset, whether by reference or
269 : not). */
270 :
271 216281 : bool value_for_index_p (int index) const
272 : {
273 216281 : return !!get_elt_for_index (index);
274 : }
275 :
276 : /* Return true if all elements present in OTHER are also present in this
277 : list. */
278 :
279 : bool superset_of_p (const ipa_argagg_value_list &other) const;
280 :
281 : /* Push all items in this list that describe parameter SRC_INDEX into RES as
282 : ones describing DST_INDEX while subtracting UNIT_DELTA from their unit
283 : offsets but skip those which would end up with a negative offset. */
284 :
285 : void push_adjusted_values (unsigned src_index, unsigned dest_index,
286 : unsigned unit_delta,
287 : vec<ipa_argagg_value> *res) const;
288 :
289 : /* Dump aggregate constants to FILE. */
290 :
291 : void dump (FILE *f);
292 :
293 : /* Dump aggregate constants to stderr. */
294 :
295 : void DEBUG_FUNCTION debug ();
296 :
297 : /* Array slice pointing to the actual storage. */
298 :
299 : array_slice<const ipa_argagg_value> m_elts;
300 : };
301 :
302 : /* Info about value ranges. */
303 :
304 : class GTY(()) ipa_vr
305 : {
306 : public:
307 : ipa_vr ();
308 : ipa_vr (const vrange &);
309 : void set_unknown ();
310 9831559 : bool known_p () const { return m_storage != NULL; }
311 9410524 : tree type () const { return m_type; }
312 : void get_vrange (value_range &) const;
313 : bool equal_p (const vrange &) const;
314 : bool equal_p (const ipa_vr &) const;
315 : const vrange_storage *storage () const { return m_storage; }
316 : void streamer_read (lto_input_block *, class data_in *);
317 : void streamer_write (output_block *) const;
318 : void dump (FILE *) const;
319 :
320 : private:
321 : friend void gt_pch_nx (struct ipa_vr &);
322 : friend void gt_ggc_mx (struct ipa_vr &);
323 : friend void gt_pch_nx (struct ipa_vr *, gt_pointer_operator, void *);
324 : friend void gt_ggc_mx_ipa_vr (void *);
325 : friend void gt_pch_nx_ipa_vr (void*);
326 : friend void gt_pch_p_6ipa_vr(void*, void*, gt_pointer_operator, void*);
327 :
328 : vrange_storage *m_storage;
329 : tree m_type;
330 : };
331 :
332 : /* A jump function for a callsite represents the values passed as actual
333 : arguments of the callsite. See enum jump_func_type for the various
334 : types of jump functions supported. */
335 : struct GTY (()) ipa_jump_func
336 : {
337 : /* Aggregate jump function description. See struct ipa_agg_jump_function
338 : and its description. */
339 : struct ipa_agg_jump_function agg;
340 :
341 : /* Information about value range, containing valid data only when vr_known is
342 : true. The pointed to structure is shared betweed different jump
343 : functions. Use ipa_set_jfunc_vr to set this field. */
344 : ipa_vr *m_vr;
345 :
346 : enum jump_func_type type;
347 : /* Represents a value of a jump function. pass_through is used only in jump
348 : function context. constant represents the actual constant in constant jump
349 : functions and member_cst holds constant c++ member functions. */
350 : union jump_func_value
351 : {
352 : struct ipa_constant_data GTY ((tag ("IPA_JF_CONST"))) constant;
353 : struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through;
354 : struct ipa_ancestor_jf_data GTY ((tag ("IPA_JF_ANCESTOR"))) ancestor;
355 : } GTY ((desc ("%1.type"))) value;
356 : };
357 :
358 :
359 : /* Return the constant stored in a constant jump functin JFUNC. */
360 :
361 : inline tree
362 5188713 : ipa_get_jf_constant (struct ipa_jump_func *jfunc)
363 : {
364 5188713 : gcc_checking_assert (jfunc->type == IPA_JF_CONST);
365 5188713 : return jfunc->value.constant.value;
366 : }
367 :
368 : inline struct ipa_cst_ref_desc *
369 1570580 : ipa_get_jf_constant_rdesc (struct ipa_jump_func *jfunc)
370 : {
371 1570580 : gcc_checking_assert (jfunc->type == IPA_JF_CONST);
372 1570580 : return jfunc->value.constant.rdesc;
373 : }
374 :
375 : /* Make JFUNC not participate in any further reference counting. */
376 :
377 : inline void
378 428 : ipa_zap_jf_refdesc (ipa_jump_func *jfunc)
379 : {
380 428 : gcc_checking_assert (jfunc->type == IPA_JF_CONST);
381 428 : jfunc->value.constant.rdesc = NULL;
382 428 : }
383 :
384 : /* Return the operand of a pass through jmp function JFUNC. */
385 :
386 : inline tree
387 116283 : ipa_get_jf_pass_through_operand (struct ipa_jump_func *jfunc)
388 : {
389 116283 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
390 116283 : return jfunc->value.pass_through.operand;
391 : }
392 :
393 : /* Return the type of the operation in a non-NOP pass through jmp function
394 : JFUNC. */
395 :
396 : inline tree
397 7675 : ipa_get_jf_pass_through_op_type (struct ipa_jump_func *jfunc)
398 : {
399 7675 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH
400 : && jfunc->value.pass_through.operation != NOP_EXPR);
401 :
402 7675 : return jfunc->value.pass_through.op_type;
403 : }
404 :
405 : /* Return the number of the caller's formal parameter that a pass through jump
406 : function JFUNC refers to. */
407 :
408 : inline int
409 6129786 : ipa_get_jf_pass_through_formal_id (struct ipa_jump_func *jfunc)
410 : {
411 6129786 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
412 6129786 : return jfunc->value.pass_through.formal_id;
413 : }
414 :
415 : /* Return operation of a pass through jump function JFUNC. */
416 :
417 : inline enum tree_code
418 2457442 : ipa_get_jf_pass_through_operation (struct ipa_jump_func *jfunc)
419 : {
420 2457442 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
421 2457442 : return jfunc->value.pass_through.operation;
422 : }
423 :
424 : /* Return the agg_preserved flag of a pass through jump function JFUNC. */
425 :
426 : inline bool
427 2273682 : ipa_get_jf_pass_through_agg_preserved (struct ipa_jump_func *jfunc)
428 : {
429 2273682 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
430 2273682 : return jfunc->value.pass_through.agg_preserved;
431 : }
432 :
433 : /* Return the refdesc_decremented flag of a pass through jump function
434 : JFUNC. */
435 :
436 : inline bool
437 488207 : ipa_get_jf_pass_through_refdesc_decremented (struct ipa_jump_func *jfunc)
438 : {
439 488207 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
440 488207 : return jfunc->value.pass_through.refdesc_decremented;
441 : }
442 :
443 : /* Set the refdesc_decremented flag of a pass through jump function JFUNC to
444 : VALUE. */
445 :
446 : inline void
447 18 : ipa_set_jf_pass_through_refdesc_decremented (ipa_jump_func *jfunc, bool value)
448 : {
449 18 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
450 18 : jfunc->value.pass_through.refdesc_decremented = value;
451 18 : }
452 :
453 : /* Return true if pass through jump function JFUNC preserves type
454 : information. */
455 :
456 : inline bool
457 324840 : ipa_get_jf_pass_through_type_preserved (struct ipa_jump_func *jfunc)
458 : {
459 324840 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
460 324840 : return jfunc->value.pass_through.agg_preserved;
461 : }
462 :
463 : /* Return the offset of an ancestor jump function JFUNC. */
464 :
465 : inline HOST_WIDE_INT
466 234427 : ipa_get_jf_ancestor_offset (struct ipa_jump_func *jfunc)
467 : {
468 234427 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
469 234427 : return jfunc->value.ancestor.offset;
470 : }
471 :
472 : /* Return the number of the caller's formal parameter that an ancestor jump
473 : function JFUNC refers to. */
474 :
475 : inline int
476 1148452 : ipa_get_jf_ancestor_formal_id (struct ipa_jump_func *jfunc)
477 : {
478 1148452 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
479 1148452 : return jfunc->value.ancestor.formal_id;
480 : }
481 :
482 : /* Return the agg_preserved flag of an ancestor jump function JFUNC. */
483 :
484 : inline bool
485 271781 : ipa_get_jf_ancestor_agg_preserved (struct ipa_jump_func *jfunc)
486 : {
487 271781 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
488 271781 : return jfunc->value.ancestor.agg_preserved;
489 : }
490 :
491 : /* Return true if ancestor jump function JFUNC presrves type information. */
492 :
493 : inline bool
494 55657 : ipa_get_jf_ancestor_type_preserved (struct ipa_jump_func *jfunc)
495 : {
496 55657 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
497 55657 : return jfunc->value.ancestor.agg_preserved;
498 : }
499 :
500 : /* Return if jfunc represents an operation whether we first check the formal
501 : parameter for non-NULLness unless it does not matter because the offset is
502 : zero anyway. */
503 :
504 : inline bool
505 24301 : ipa_get_jf_ancestor_keep_null (struct ipa_jump_func *jfunc)
506 : {
507 24301 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
508 24301 : return jfunc->value.ancestor.keep_null;
509 : }
510 :
511 : /* Class for allocating a bundle of various potentially known properties about
512 : actual arguments of a particular call on stack for the usual case and on
513 : heap only if there are unusually many arguments. The data is deallocated
514 : when the instance of this class goes out of scope or is otherwise
515 : destructed. */
516 :
517 23765408 : class ipa_auto_call_arg_values
518 : {
519 : public:
520 : /* If m_known_vals (vector of known "scalar" values) is sufficiantly long,
521 : return its element at INDEX, otherwise return NULL. */
522 55160502 : tree safe_sval_at (int index)
523 : {
524 55160502 : if ((unsigned) index < m_known_vals.length ())
525 34974466 : return m_known_vals[index];
526 : return NULL;
527 : }
528 :
529 : /* Vector describing known values of parameters. */
530 : auto_vec<tree, 32> m_known_vals;
531 :
532 : /* Vector describing known polymorphic call contexts. */
533 : auto_vec<ipa_polymorphic_call_context, 32> m_known_contexts;
534 :
535 : /* Vector describing known aggregate values. */
536 : auto_vec<ipa_argagg_value, 32> m_known_aggs;
537 :
538 : /* Vector describing known value ranges of arguments. */
539 : auto_vec<value_range, 32> m_known_value_ranges;
540 : };
541 :
542 : inline
543 28554566 : ipa_argagg_value_list
544 28554566 : ::ipa_argagg_value_list (const ipa_auto_call_arg_values *aavals)
545 57109132 : : m_elts (aavals->m_known_aggs)
546 : {}
547 :
548 : /* Class bundling the various potentially known properties about actual
549 : arguments of a particular call. This variant does not deallocate the
550 : bundled data in any way as the vectors can either be pointing to vectors in
551 : ipa_auto_call_arg_values or be allocated independently. */
552 :
553 : class ipa_call_arg_values
554 : {
555 : public:
556 : /* Default constructor, setting the vectors to empty ones. */
557 1166590 : ipa_call_arg_values ()
558 0 : {}
559 :
560 : /* Construct this general variant of the bundle from the variant which uses
561 : auto_vecs to hold the vectors. This means that vectors of objects
562 : constructed with this constructor should not be changed because if they
563 : get reallocated, the member vectors and the underlying auto_vecs would get
564 : out of sync. */
565 18897251 : ipa_call_arg_values (ipa_auto_call_arg_values *aavals)
566 18897251 : : m_known_vals (aavals->m_known_vals.to_vec_legacy ()),
567 18897251 : m_known_contexts (aavals->m_known_contexts.to_vec_legacy ()),
568 18897251 : m_known_aggs (aavals->m_known_aggs.to_vec_legacy ()),
569 18897251 : m_known_value_ranges (aavals->m_known_value_ranges.to_vec_legacy ())
570 : {}
571 :
572 : /* If m_known_vals (vector of known "scalar" values) is sufficiantly long,
573 : return its element at INDEX, otherwise return NULL. */
574 252751 : tree safe_sval_at (int index)
575 : {
576 252751 : if ((unsigned) index < m_known_vals.length ())
577 117910 : return m_known_vals[index];
578 : return NULL;
579 : }
580 :
581 : /* Vector describing known values of parameters. */
582 : vec<tree> m_known_vals = vNULL;
583 :
584 : /* Vector describing known polymorphic call contexts. */
585 : vec<ipa_polymorphic_call_context> m_known_contexts = vNULL;
586 :
587 : /* Vector describing known aggregate values. */
588 : vec<ipa_argagg_value> m_known_aggs = vNULL;
589 :
590 : /* Vector describing known value ranges of arguments. */
591 : vec<value_range> m_known_value_ranges = vNULL;
592 : };
593 :
594 : inline
595 3425114 : ipa_argagg_value_list
596 3425114 : ::ipa_argagg_value_list (const ipa_call_arg_values *gavals)
597 4994605 : : m_elts (gavals->m_known_aggs)
598 : {}
599 :
600 : /* Summary describing a single formal parameter. */
601 :
602 : struct GTY(()) ipa_param_descriptor
603 : {
604 : /* In analysis and modification phase, this is the PARAM_DECL of this
605 : parameter, in IPA LTO phase, this is the type of the described
606 : parameter or NULL if not known. Do not read this field directly but
607 : through ipa_get_param and ipa_get_type as appropriate. */
608 : tree decl_or_type;
609 : /* If all uses of the parameter are described by ipa-prop structures, this
610 : says how many there are. If any use could not be described by means of
611 : ipa-prop structures (which include flag dereferenced below), this is
612 : IPA_UNDESCRIBED_USE. */
613 : int controlled_uses;
614 : unsigned int move_cost : 27;
615 : /* The parameter is used. */
616 : unsigned used : 1;
617 : unsigned used_by_ipa_predicates : 1;
618 : unsigned used_by_indirect_call : 1;
619 : unsigned used_by_polymorphic_call : 1;
620 : /* Set to true when in addition to being used in call statements, the
621 : parameter has also been used for loads (but not for writes, does not
622 : escape, etc.). This allows us to identify parameters p which are only
623 : used as *p, and so when we propagate a constant to them, we can generate a
624 : LOAD and not ADDR reference to them. */
625 : unsigned load_dereferenced : 1;
626 : };
627 :
628 : /* ipa_node_params stores information related to formal parameters of functions
629 : and some other information for interprocedural passes that operate on
630 : parameters (such as ipa-cp). */
631 :
632 : class GTY((for_user)) ipa_node_params
633 : {
634 : public:
635 : /* Default constructor. */
636 : ipa_node_params ();
637 :
638 : /* Default destructor. */
639 : ~ipa_node_params ();
640 :
641 : /* Information about individual formal parameters that are gathered when
642 : summaries are generated. */
643 : vec<ipa_param_descriptor, va_gc> *descriptors;
644 : /* Pointer to an array of structures describing individual formal
645 : parameters. */
646 : vec<ipcp_param_lattices> GTY((skip)) lattices;
647 : /* Only for versioned nodes this field would not be NULL,
648 : it points to the node that IPA cp cloned from. */
649 : struct cgraph_node * GTY((skip)) ipcp_orig_node;
650 : /* If this node is an ipa-cp clone, these are the known constants that
651 : describe what it has been specialized for. */
652 : vec<tree> GTY((skip)) known_csts;
653 : /* If this node is an ipa-cp clone, these are the known polymorphic contexts
654 : that describe what it has been specialized for. */
655 : vec<ipa_polymorphic_call_context> GTY((skip)) known_contexts;
656 : /* Whether the param uses analysis and jump function computation has already
657 : been performed. */
658 : unsigned analysis_done : 1;
659 : /* Whether the function is enqueued in ipa-cp propagation stack. */
660 : unsigned node_enqueued : 1;
661 : /* Set if this is an IPA-CP clone for all contexts. */
662 : unsigned is_all_contexts_clone : 1;
663 : /* Node has been completely replaced by clones and will be removed after
664 : ipa-cp is finished. */
665 : unsigned node_dead : 1;
666 : /* Node is involved in a recursion, potentially indirect. */
667 : unsigned node_within_scc : 1;
668 : /* Node contains only direct recursion. */
669 : unsigned node_is_self_scc : 1;
670 : /* Node is calling a private function called only once. */
671 : unsigned node_calling_single_call : 1;
672 : /* False when there is something makes versioning impossible. */
673 : unsigned versionable : 1;
674 : };
675 :
676 : inline
677 7041875 : ipa_node_params::ipa_node_params ()
678 7041875 : : descriptors (NULL), lattices (vNULL), ipcp_orig_node (NULL),
679 7041875 : known_csts (vNULL), known_contexts (vNULL), analysis_done (0),
680 7041875 : node_enqueued (0), is_all_contexts_clone (0),
681 7041875 : node_dead (0), node_within_scc (0), node_is_self_scc (0),
682 7041875 : node_calling_single_call (0), versionable (0)
683 : {
684 : }
685 :
686 : inline
687 7041874 : ipa_node_params::~ipa_node_params ()
688 : {
689 7041874 : vec_free (descriptors);
690 7041874 : lattices.release ();
691 7041874 : known_csts.release ();
692 7041874 : known_contexts.release ();
693 7041874 : }
694 :
695 : /* Intermediate information that we get from alias analysis about a particular
696 : parameter in a particular basic_block. When a parameter or the memory it
697 : references is marked modified, we use that information in all dominated
698 : blocks without consulting alias analysis oracle. */
699 :
700 : struct ipa_param_aa_status
701 : {
702 : /* Set when this structure contains meaningful information. If not, the
703 : structure describing a dominating BB should be used instead. */
704 : bool valid;
705 :
706 : /* Whether we have seen something which might have modified the data in
707 : question. PARM is for the parameter itself, REF is for data it points to
708 : but using the alias type of individual accesses and PT is the same thing
709 : but for computing aggregate pass-through functions using a very inclusive
710 : ao_ref. */
711 : bool parm_modified, ref_modified, pt_modified;
712 : };
713 :
714 : /* Information related to a given BB that used only when looking at function
715 : body. */
716 :
717 : struct ipa_bb_info
718 : {
719 : /* Call graph edges going out of this BB. */
720 : vec<cgraph_edge *> cg_edges;
721 : /* Alias analysis statuses of each formal parameter at this bb. */
722 : vec<ipa_param_aa_status> param_aa_statuses;
723 : };
724 :
725 : /* Structure with global information that is only used when looking at function
726 : body. */
727 :
728 : struct ipa_func_body_info
729 : {
730 : /* The node that is being analyzed. */
731 : cgraph_node *node;
732 :
733 : /* Its info. */
734 : class ipa_node_params *info;
735 :
736 : /* Information about individual BBs. */
737 : vec<ipa_bb_info> bb_infos;
738 :
739 : /* Number of parameters. */
740 : int param_count;
741 :
742 : /* Number of statements we are still allowed to walked by when analyzing this
743 : function. */
744 : unsigned int aa_walk_budget;
745 : };
746 :
747 : /* ipa_node_params access functions. Please use these to access fields that
748 : are or will be shared among various passes. */
749 :
750 : /* Return the number of formal parameters. */
751 :
752 : inline int
753 83602306 : ipa_get_param_count (class ipa_node_params *info)
754 : {
755 162613184 : return vec_safe_length (info->descriptors);
756 : }
757 :
758 : /* Return the parameter declaration in DESCRIPTORS at index I and assert it is
759 : indeed a PARM_DECL. */
760 :
761 : inline tree
762 2475839 : ipa_get_param (const vec<ipa_param_descriptor, va_gc> &descriptors, int i)
763 : {
764 2475839 : tree t = descriptors[i].decl_or_type;
765 2475839 : gcc_checking_assert (TREE_CODE (t) == PARM_DECL);
766 2475839 : return t;
767 : }
768 :
769 : /* Return the declaration of Ith formal parameter of the function corresponding
770 : to INFO. Note there is no setter function as this array is built just once
771 : using ipa_initialize_node_params. This function should not be called in
772 : WPA. */
773 :
774 : inline tree
775 2475839 : ipa_get_param (class ipa_node_params *info, int i)
776 : {
777 2475839 : gcc_checking_assert (info->descriptors);
778 2475839 : return ipa_get_param (*info->descriptors, i);
779 : }
780 :
781 : /* Return the type of Ith formal parameter of the function corresponding
782 : to INFO if it is known or NULL if not. */
783 :
784 : inline tree
785 25095341 : ipa_get_type (class ipa_node_params *info, int i)
786 : {
787 25095341 : if (vec_safe_length (info->descriptors) <= (unsigned) i)
788 : return NULL;
789 24858199 : tree t = (*info->descriptors)[i].decl_or_type;
790 24858199 : if (!t)
791 : return NULL;
792 24858199 : if (TYPE_P (t))
793 : return t;
794 23478017 : gcc_checking_assert (TREE_CODE (t) == PARM_DECL);
795 23478017 : return TREE_TYPE (t);
796 : }
797 :
798 : /* Return the move cost of Ith formal parameter of the function corresponding
799 : to INFO. */
800 :
801 : inline int
802 576564 : ipa_get_param_move_cost (class ipa_node_params *info, int i)
803 : {
804 576564 : gcc_checking_assert (info->descriptors);
805 576564 : return (*info->descriptors)[i].move_cost;
806 : }
807 :
808 : /* Set the used flag corresponding to the Ith formal parameter of the function
809 : associated with INFO to VAL. */
810 :
811 : inline void
812 2510680 : ipa_set_param_used (class ipa_node_params *info, int i, bool val)
813 : {
814 2510680 : gcc_checking_assert (info->descriptors);
815 2510680 : (*info->descriptors)[i].used = val;
816 2510680 : }
817 :
818 : /* Set the used_by_ipa_predicates flag corresponding to the Ith formal
819 : parameter of the function associated with INFO to VAL. */
820 :
821 : inline void
822 8389934 : ipa_set_param_used_by_ipa_predicates (class ipa_node_params *info, int i, bool val)
823 : {
824 8389934 : gcc_checking_assert (info->descriptors);
825 8389934 : (*info->descriptors)[i].used_by_ipa_predicates = val;
826 8389934 : }
827 :
828 : /* Set the used_by_indirect_call flag corresponding to the Ith formal
829 : parameter of the function associated with INFO to VAL. */
830 :
831 : inline void
832 22007 : ipa_set_param_used_by_indirect_call (class ipa_node_params *info, int i, bool val)
833 : {
834 22007 : gcc_checking_assert (info->descriptors);
835 22007 : (*info->descriptors)[i].used_by_indirect_call = val;
836 22007 : }
837 :
838 : /* Set the .used_by_polymorphic_call flag corresponding to the Ith formal
839 : parameter of the function associated with INFO to VAL. */
840 :
841 : inline void
842 13563 : ipa_set_param_used_by_polymorphic_call (class ipa_node_params *info, int i, bool val)
843 : {
844 13563 : gcc_checking_assert (info->descriptors);
845 13563 : (*info->descriptors)[i].used_by_polymorphic_call = val;
846 13563 : }
847 :
848 : /* Return how many uses described by ipa-prop a parameter has or
849 : IPA_UNDESCRIBED_USE if there is a use that is not described by these
850 : structures. */
851 : inline int
852 1146343 : ipa_get_controlled_uses (class ipa_node_params *info, int i)
853 : {
854 : /* FIXME: introducing speculation causes out of bounds access here. */
855 1146343 : if (vec_safe_length (info->descriptors) > (unsigned)i)
856 1146334 : return (*info->descriptors)[i].controlled_uses;
857 : return IPA_UNDESCRIBED_USE;
858 : }
859 :
860 : /* Set the controlled counter of a given parameter. */
861 :
862 : inline void
863 2894702 : ipa_set_controlled_uses (class ipa_node_params *info, int i, int val)
864 : {
865 2894702 : gcc_checking_assert (info->descriptors);
866 2894702 : (*info->descriptors)[i].controlled_uses = val;
867 2894702 : }
868 :
869 : /* Assuming a parameter does not have IPA_UNDESCRIBED_USE controlled uses,
870 : return flag which indicates it has been dereferenced but only in a load. */
871 : inline int
872 200472 : ipa_get_param_load_dereferenced (class ipa_node_params *info, int i)
873 : {
874 200472 : gcc_assert (ipa_get_controlled_uses (info, i) != IPA_UNDESCRIBED_USE);
875 200472 : return (*info->descriptors)[i].load_dereferenced;
876 : }
877 :
878 : /* Set the load_dereferenced flag of a given parameter. */
879 :
880 : inline void
881 2646883 : ipa_set_param_load_dereferenced (class ipa_node_params *info, int i, bool val)
882 : {
883 2646883 : gcc_checking_assert (info->descriptors);
884 2646883 : (*info->descriptors)[i].load_dereferenced = val;
885 2646883 : }
886 :
887 : /* Return the used flag corresponding to the Ith formal parameter of the
888 : function associated with INFO. */
889 :
890 : inline bool
891 18432828 : ipa_is_param_used (class ipa_node_params *info, int i)
892 : {
893 18432828 : gcc_checking_assert (info->descriptors);
894 18432828 : return (*info->descriptors)[i].used;
895 : }
896 :
897 : /* Return the used_by_ipa_predicates flag corresponding to the Ith formal
898 : parameter of the function associated with INFO. */
899 :
900 : inline bool
901 45347453 : ipa_is_param_used_by_ipa_predicates (class ipa_node_params *info, int i)
902 : {
903 45347453 : gcc_checking_assert (info->descriptors);
904 45347453 : return (*info->descriptors)[i].used_by_ipa_predicates;
905 : }
906 :
907 : /* Return the used_by_indirect_call flag corresponding to the Ith formal
908 : parameter of the function associated with INFO. */
909 :
910 : inline bool
911 47929986 : ipa_is_param_used_by_indirect_call (class ipa_node_params *info, int i)
912 : {
913 47929986 : gcc_checking_assert (info->descriptors);
914 47929986 : return (*info->descriptors)[i].used_by_indirect_call;
915 : }
916 :
917 : /* Return the used_by_polymorphic_call flag corresponding to the Ith formal
918 : parameter of the function associated with INFO. */
919 :
920 : inline bool
921 38519448 : ipa_is_param_used_by_polymorphic_call (class ipa_node_params *info, int i)
922 : {
923 38519448 : gcc_checking_assert (info->descriptors);
924 38519448 : return (*info->descriptors)[i].used_by_polymorphic_call;
925 : }
926 :
927 : /* GTY-marked structure used to map DECL_UIDs of APRAMs to their indices in
928 : their DECL_ARGUMENTs chain. */
929 : struct GTY(()) ipa_uid_to_idx_map_elt
930 : {
931 : /* DECL_UID of the PARAM. */
932 : unsigned uid;
933 : /* Its index in the DECL_ARGUMETs chain. */
934 : unsigned index;
935 : };
936 :
937 : /* Structure holding information for the transformation phase of IPA-CP. */
938 :
939 : struct GTY(()) ipcp_transformation
940 : {
941 : /* Default constructor. */
942 137608 : ipcp_transformation ()
943 137608 : : m_agg_values (nullptr), m_vr (nullptr), m_uid_to_idx (nullptr)
944 : { }
945 :
946 : /* Default destructor. */
947 137588 : ~ipcp_transformation ()
948 : {
949 137588 : vec_free (m_agg_values);
950 137588 : vec_free (m_vr);
951 137588 : }
952 :
953 : /* Given PARAM which must be a parameter of function FNDECL described by
954 : THIS, return its index in the DECL_ARGUMENTS chain, using a pre-computed
955 : DECL_UID-sorted vector if available (which is pre-computed only if there
956 : are many parameters). Can return -1 if param is static chain not
957 : represented among DECL_ARGUMENTS. */
958 :
959 : int get_param_index (const_tree fndecl, const_tree param) const;
960 :
961 : /* Assuming THIS describes FNDECL and it has sufficiently many parameters to
962 : justify the overhead, create a DECL_UID-sorted vector to speed up mapping
963 : from parameters to their indices in DECL_ARGUMENTS chain. */
964 :
965 : void maybe_create_parm_idx_map (tree fndecl);
966 :
967 : /* Remove all elements in m_agg_values on which PREDICATE returns true. */
968 :
969 : template<typename pred_function>
970 9732 : void remove_argaggs_if (pred_function &&predicate)
971 : {
972 9732 : unsigned ts_len = vec_safe_length (m_agg_values);
973 4290 : if (ts_len == 0)
974 : return;
975 :
976 : bool removed_item = false;
977 : unsigned dst_index = 0;
978 :
979 24708 : for (unsigned i = 0; i < ts_len; i++)
980 : {
981 20418 : ipa_argagg_value *v = &(*m_agg_values)[i];
982 20418 : if (!predicate (*v))
983 : {
984 20293 : if (removed_item)
985 22 : (*m_agg_values)[dst_index] = *v;
986 20293 : dst_index++;
987 : }
988 : else
989 : removed_item = true;
990 : }
991 4290 : if (dst_index == 0)
992 : {
993 38 : ggc_free (m_agg_values);
994 38 : m_agg_values = NULL;
995 : }
996 4252 : else if (removed_item)
997 22 : m_agg_values->truncate (dst_index);
998 : }
999 :
1000 : /* Known aggregate values. */
1001 : vec<ipa_argagg_value, va_gc> *m_agg_values;
1002 : /* Value range information. */
1003 : vec<ipa_vr, va_gc> *m_vr;
1004 : /* If there are many parameters, this is a vector sorted by their DECL_UIDs
1005 : to map them to their indices in the DECL_ARGUMENT chain. */
1006 : vec<ipa_uid_to_idx_map_elt, va_gc> *m_uid_to_idx;
1007 : };
1008 :
1009 : inline
1010 72961 : ipa_argagg_value_list::ipa_argagg_value_list (const ipcp_transformation *tinfo)
1011 145922 : : m_elts (tinfo->m_agg_values)
1012 : {}
1013 :
1014 : void ipa_set_node_agg_value_chain (struct cgraph_node *node,
1015 : vec<ipa_argagg_value, va_gc> *aggs);
1016 : void ipcp_transformation_initialize (void);
1017 : void ipcp_free_transformation_sum (void);
1018 :
1019 : /* ipa_edge_args stores information related to a callsite and particularly its
1020 : arguments. It can be accessed by the IPA_EDGE_REF macro. */
1021 :
1022 : class GTY((for_user)) ipa_edge_args
1023 : {
1024 : public:
1025 :
1026 : /* Default constructor. */
1027 4403301 : ipa_edge_args () : jump_functions (NULL), polymorphic_call_contexts (NULL)
1028 : {}
1029 :
1030 : /* Destructor. */
1031 4403301 : ~ipa_edge_args ()
1032 : {
1033 4403301 : unsigned int i;
1034 4403301 : ipa_jump_func *jf;
1035 13881885 : FOR_EACH_VEC_SAFE_ELT (jump_functions, i, jf)
1036 9907392 : vec_free (jf->agg.items);
1037 4403301 : vec_free (jump_functions);
1038 4403301 : vec_free (polymorphic_call_contexts);
1039 4403301 : }
1040 :
1041 : /* Vectors of the callsite's jump function and polymorphic context
1042 : information of each parameter. */
1043 : vec<ipa_jump_func, va_gc> *jump_functions;
1044 : vec<ipa_polymorphic_call_context, va_gc> *polymorphic_call_contexts;
1045 : };
1046 :
1047 : /* ipa_edge_args access functions. Please use these to access fields that
1048 : are or will be shared among various passes. */
1049 :
1050 : /* Return the number of actual arguments. */
1051 :
1052 : inline int
1053 25617848 : ipa_get_cs_argument_count (class ipa_edge_args *args)
1054 : {
1055 50020137 : return vec_safe_length (args->jump_functions);
1056 : }
1057 :
1058 : /* Returns a pointer to the jump function for the ith argument. Please note
1059 : there is no setter function as jump functions are all set up in
1060 : ipa_compute_jump_functions. */
1061 :
1062 : inline struct ipa_jump_func *
1063 53450663 : ipa_get_ith_jump_func (class ipa_edge_args *args, int i)
1064 : {
1065 50636138 : return &(*args->jump_functions)[i];
1066 : }
1067 :
1068 : /* Returns a pointer to the polymorphic call context for the ith argument.
1069 : NULL if contexts are not computed. */
1070 : inline class ipa_polymorphic_call_context *
1071 8674169 : ipa_get_ith_polymorhic_call_context (class ipa_edge_args *args, int i)
1072 : {
1073 8670566 : if (!args->polymorphic_call_contexts)
1074 : return NULL;
1075 4007042 : return &(*args->polymorphic_call_contexts)[i];
1076 : }
1077 :
1078 : /* Function summary for ipa_node_params. */
1079 : class GTY((user)) ipa_node_params_t: public function_summary <ipa_node_params *>
1080 : {
1081 : public:
1082 5114013 : ipa_node_params_t (symbol_table *table, bool ggc):
1083 5114013 : function_summary<ipa_node_params *> (table, ggc)
1084 : {
1085 5114013 : disable_insertion_hook ();
1086 5114013 : }
1087 :
1088 : /* Hook that is called by summary when a node is duplicated. */
1089 : void duplicate (cgraph_node *node,
1090 : cgraph_node *node2,
1091 : ipa_node_params *data,
1092 : ipa_node_params *data2) final override;
1093 : };
1094 :
1095 : /* Summary to manange ipa_edge_args structures. */
1096 :
1097 : class GTY((user)) ipa_edge_args_sum_t : public call_summary <ipa_edge_args *>
1098 : {
1099 : public:
1100 242334 : ipa_edge_args_sum_t (symbol_table *table, bool ggc)
1101 242334 : : call_summary<ipa_edge_args *> (table, ggc) { }
1102 :
1103 848323 : void remove (cgraph_edge *edge)
1104 : {
1105 848323 : call_summary <ipa_edge_args *>::remove (edge);
1106 848323 : }
1107 :
1108 : /* Hook that is called by summary when an edge is removed. */
1109 : void remove (cgraph_edge *cs, ipa_edge_args *args) final override;
1110 : /* Hook that is called by summary when an edge is duplicated. */
1111 : void duplicate (cgraph_edge *src,
1112 : cgraph_edge *dst,
1113 : ipa_edge_args *old_args,
1114 : ipa_edge_args *new_args) final override;
1115 : };
1116 :
1117 : /* Function summary where the parameter infos are actually stored. */
1118 : extern GTY(()) ipa_node_params_t * ipa_node_params_sum;
1119 : /* Call summary to store information about edges such as jump functions. */
1120 : extern GTY(()) ipa_edge_args_sum_t *ipa_edge_args_sum;
1121 :
1122 : /* Function summary for IPA-CP transformation. */
1123 : class ipcp_transformation_t
1124 : : public function_summary<ipcp_transformation *>
1125 : {
1126 : public:
1127 19810 : ipcp_transformation_t (symbol_table *table, bool ggc):
1128 39620 : function_summary<ipcp_transformation *> (table, ggc) {}
1129 :
1130 19801 : ~ipcp_transformation_t () {}
1131 :
1132 19810 : static ipcp_transformation_t *create_ggc (symbol_table *symtab)
1133 : {
1134 19810 : ipcp_transformation_t *summary
1135 19810 : = new (ggc_alloc_no_dtor <ipcp_transformation_t> ())
1136 19810 : ipcp_transformation_t (symtab, true);
1137 19810 : return summary;
1138 : }
1139 : /* Hook that is called by summary when a node is duplicated. */
1140 : void duplicate (cgraph_node *node,
1141 : cgraph_node *node2,
1142 : ipcp_transformation *data,
1143 : ipcp_transformation *data2) final override;
1144 : };
1145 :
1146 : /* Function summary where the IPA CP transformations are actually stored. */
1147 : extern GTY(()) function_summary <ipcp_transformation *> *ipcp_transformation_sum;
1148 :
1149 : /* Creating and freeing ipa_node_params and ipa_edge_args. */
1150 : void ipa_create_all_node_params (void);
1151 : void ipa_create_all_edge_args (void);
1152 : void ipa_check_create_edge_args (void);
1153 : void ipa_free_all_node_params (void);
1154 : void ipa_free_all_edge_args (void);
1155 : void ipa_free_all_structures_after_ipa_cp (void);
1156 : void ipa_free_all_structures_after_iinln (void);
1157 :
1158 : void ipa_register_cgraph_hooks (void);
1159 : int count_formal_params (tree fndecl);
1160 :
1161 : /* This function ensures the array of node param infos is big enough to
1162 : accommodate a structure for all nodes and reallocates it if not. */
1163 :
1164 : inline void
1165 8053500 : ipa_check_create_node_params (void)
1166 : {
1167 8053500 : if (!ipa_node_params_sum)
1168 5114013 : ipa_node_params_sum
1169 10228026 : = (new (ggc_alloc_no_dtor <ipa_node_params_t> ())
1170 5114013 : ipa_node_params_t (symtab, true));
1171 8053500 : }
1172 :
1173 : /* Returns true if edge summary contains a record for EDGE. The main purpose
1174 : of this function is that debug dumping function can check info availability
1175 : without causing allocations. */
1176 :
1177 : inline bool
1178 1212 : ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge)
1179 : {
1180 1212 : return ipa_edge_args_sum->exists (edge);
1181 : }
1182 :
1183 : inline ipcp_transformation *
1184 18121530 : ipcp_get_transformation_summary (cgraph_node *node)
1185 : {
1186 18121530 : if (ipcp_transformation_sum == NULL)
1187 : return NULL;
1188 :
1189 6175641 : return ipcp_transformation_sum->get (node);
1190 : }
1191 :
1192 : /* Function formal parameters related computations. */
1193 : void ipa_initialize_node_params (struct cgraph_node *node);
1194 : void ipa_print_constant_value (FILE *f, tree val);
1195 : bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs,
1196 : vec<cgraph_edge *> *new_edges);
1197 :
1198 : /* Indirect edge processing and target discovery. */
1199 : tree ipa_get_indirect_edge_target (struct cgraph_edge *ie,
1200 : ipa_call_arg_values *avals,
1201 : bool *speculative);
1202 : struct cgraph_edge *ipa_make_edge_direct_to_target (struct cgraph_edge *, tree,
1203 : bool speculative = false);
1204 : tree ipa_impossible_devirt_target (struct cgraph_edge *, tree);
1205 :
1206 :
1207 : /* Functions related to both. */
1208 : void ipa_analyze_node (struct cgraph_node *);
1209 : void ipa_analyze_var_static_initializer (varpool_node *node);
1210 :
1211 : /* Aggregate jump function related functions. */
1212 : tree ipa_find_agg_cst_from_init (tree scalar, HOST_WIDE_INT offset,
1213 : bool by_ref);
1214 : bool ipa_load_from_parm_agg (struct ipa_func_body_info *fbi,
1215 : vec<ipa_param_descriptor, va_gc> *descriptors,
1216 : gimple *stmt, tree op, int *index_p,
1217 : HOST_WIDE_INT *offset_p, poly_int64 *size_p,
1218 : bool *by_ref, bool *guaranteed_unmodified = NULL);
1219 :
1220 : /* Debugging interface. */
1221 : void ipa_print_node_params (FILE *, struct cgraph_node *node);
1222 : void ipa_print_all_params (FILE *);
1223 : void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node);
1224 : void ipa_print_all_jump_functions (FILE * f);
1225 : void ipcp_verify_propagated_values (void);
1226 :
1227 : template <typename value>
1228 : class ipcp_value;
1229 :
1230 : extern object_allocator<ipcp_value<tree> > ipcp_cst_values_pool;
1231 : extern object_allocator<ipcp_value<ipa_polymorphic_call_context> >
1232 : ipcp_poly_ctx_values_pool;
1233 :
1234 : template <typename valtype>
1235 : struct ipcp_value_source;
1236 :
1237 : extern object_allocator<ipcp_value_source<tree> > ipcp_sources_pool;
1238 :
1239 : struct ipcp_agg_lattice;
1240 :
1241 : extern object_allocator<ipcp_agg_lattice> ipcp_agg_lattice_pool;
1242 :
1243 : void ipa_prop_write_jump_functions (void);
1244 : void ipa_prop_read_jump_functions (void);
1245 : void ipcp_write_transformation_summaries (void);
1246 : void ipcp_read_transformation_summaries (void);
1247 : int ipa_get_param_decl_index (class ipa_node_params *, tree);
1248 : tree ipa_value_from_jfunc (class ipa_node_params *info,
1249 : struct ipa_jump_func *jfunc, tree type);
1250 : tree ipa_agg_value_from_jfunc (ipa_node_params *info, cgraph_node *node,
1251 : const ipa_agg_jf_item *item);
1252 : unsigned int ipcp_transform_function (struct cgraph_node *node);
1253 : ipa_polymorphic_call_context ipa_context_from_jfunc (ipa_node_params *,
1254 : cgraph_edge *,
1255 : int,
1256 : ipa_jump_func *);
1257 : void ipa_value_range_from_jfunc (vrange &, ipa_node_params *, cgraph_edge *,
1258 : ipa_jump_func *, tree);
1259 : void ipa_push_agg_values_from_jfunc (ipa_node_params *info, cgraph_node *node,
1260 : ipa_agg_jump_function *agg_jfunc,
1261 : unsigned dst_index,
1262 : vec<ipa_argagg_value> *res);
1263 : void ipa_dump_param (FILE *, class ipa_node_params *info, int i);
1264 : void ipa_dump_jump_function (FILE *f, ipa_jump_func *jfunc,
1265 : class ipa_polymorphic_call_context *ctx = NULL);
1266 : void ipa_dump_noted_record_fnptrs (FILE *f);
1267 : void ipa_debug_noted_record_fnptrs (void);
1268 : void ipa_release_body_info (struct ipa_func_body_info *);
1269 : tree ipa_get_callee_param_type (struct cgraph_edge *e, int i);
1270 : bool ipcp_get_parm_bits (tree, tree *, widest_int *);
1271 : tree ipcp_get_aggregate_const (struct function *func, tree parm, bool by_ref,
1272 : HOST_WIDE_INT bit_offset,
1273 : HOST_WIDE_INT bit_size);
1274 : bool unadjusted_ptr_and_unit_offset (tree op, tree *ret,
1275 : poly_int64 *offset_ret);
1276 : void ipa_get_range_from_ip_invariant (vrange &r, tree val, cgraph_node *node);
1277 : tree ipa_single_noted_fnptr_in_record (tree rectype, unsigned offset);
1278 : void ipa_prop_cc_finalize (void);
1279 : void ipa_free_noted_fnptr_calls ();
1280 :
1281 : /* In ipa-cp.cc */
1282 : void ipa_cp_cc_finalize (void);
1283 : bool ipa_return_value_range (value_range &range, tree decl);
1284 : void ipa_record_return_value_range (value_range val);
1285 : bool ipa_jump_functions_equivalent_p (ipa_jump_func *jf1, ipa_jump_func *jf2);
1286 :
1287 :
1288 : #endif /* IPA_PROP_H */
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