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1 : : /* Interprocedural analyses.
2 : : Copyright (C) 2005-2025 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 costant */
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 : 2976 : ipa_argagg_value_list (const vec<ipa_argagg_value, va_gc> *values)
234 : 5890 : : m_elts (values)
235 : : {}
236 : 3825 : ipa_argagg_value_list (const vec<ipa_argagg_value> *values)
237 : 7650 : : 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 : 137191 : bool value_for_index_p (int index) const
272 : : {
273 : 137191 : 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 : 9633659 : bool known_p () const { return m_storage != NULL; }
311 : 9184823 : 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 : 4624140 : ipa_get_jf_constant (struct ipa_jump_func *jfunc)
363 : : {
364 : 4624140 : gcc_checking_assert (jfunc->type == IPA_JF_CONST);
365 : 4624140 : return jfunc->value.constant.value;
366 : : }
367 : :
368 : : inline struct ipa_cst_ref_desc *
369 : 1498358 : ipa_get_jf_constant_rdesc (struct ipa_jump_func *jfunc)
370 : : {
371 : 1498358 : gcc_checking_assert (jfunc->type == IPA_JF_CONST);
372 : 1498358 : return jfunc->value.constant.rdesc;
373 : : }
374 : :
375 : : /* Make JFUNC not participate in any further reference counting. */
376 : :
377 : : inline void
378 : 387 : ipa_zap_jf_refdesc (ipa_jump_func *jfunc)
379 : : {
380 : 387 : gcc_checking_assert (jfunc->type == IPA_JF_CONST);
381 : 387 : jfunc->value.constant.rdesc = NULL;
382 : 387 : }
383 : :
384 : : /* Return the operand of a pass through jmp function JFUNC. */
385 : :
386 : : inline tree
387 : 87741 : ipa_get_jf_pass_through_operand (struct ipa_jump_func *jfunc)
388 : : {
389 : 87741 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
390 : 87741 : 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 : 7066 : ipa_get_jf_pass_through_op_type (struct ipa_jump_func *jfunc)
398 : : {
399 : 7066 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH
400 : : && jfunc->value.pass_through.operation != NOP_EXPR);
401 : :
402 : 7066 : 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 : 6271931 : ipa_get_jf_pass_through_formal_id (struct ipa_jump_func *jfunc)
410 : : {
411 : 6271931 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
412 : 6271931 : 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 : 2356646 : ipa_get_jf_pass_through_operation (struct ipa_jump_func *jfunc)
419 : : {
420 : 2356646 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
421 : 2356646 : 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 : 2237244 : ipa_get_jf_pass_through_agg_preserved (struct ipa_jump_func *jfunc)
428 : : {
429 : 2237244 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
430 : 2237244 : 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 : 471748 : ipa_get_jf_pass_through_refdesc_decremented (struct ipa_jump_func *jfunc)
438 : : {
439 : 471748 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
440 : 471748 : 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 : 16 : ipa_set_jf_pass_through_refdesc_decremented (ipa_jump_func *jfunc, bool value)
448 : : {
449 : 16 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
450 : 16 : jfunc->value.pass_through.refdesc_decremented = value;
451 : 16 : }
452 : :
453 : : /* Return true if pass through jump function JFUNC preserves type
454 : : information. */
455 : :
456 : : inline bool
457 : 259675 : ipa_get_jf_pass_through_type_preserved (struct ipa_jump_func *jfunc)
458 : : {
459 : 259675 : gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
460 : 259675 : 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 : 236742 : ipa_get_jf_ancestor_offset (struct ipa_jump_func *jfunc)
467 : : {
468 : 236742 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
469 : 236742 : 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 : 1158295 : ipa_get_jf_ancestor_formal_id (struct ipa_jump_func *jfunc)
477 : : {
478 : 1158295 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
479 : 1158295 : 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 : 274263 : ipa_get_jf_ancestor_agg_preserved (struct ipa_jump_func *jfunc)
486 : : {
487 : 274263 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
488 : 274263 : return jfunc->value.ancestor.agg_preserved;
489 : : }
490 : :
491 : : /* Return true if ancestor jump function JFUNC presrves type information. */
492 : :
493 : : inline bool
494 : 55699 : ipa_get_jf_ancestor_type_preserved (struct ipa_jump_func *jfunc)
495 : : {
496 : 55699 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
497 : 55699 : 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 : 26334 : ipa_get_jf_ancestor_keep_null (struct ipa_jump_func *jfunc)
506 : : {
507 : 26334 : gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
508 : 26334 : 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 : 23478238 : 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 : 52835938 : tree safe_sval_at (int index)
523 : : {
524 : 52835938 : if ((unsigned) index < m_known_vals.length ())
525 : 32865783 : 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 : 26797339 : ipa_argagg_value_list
544 : 26797339 : ::ipa_argagg_value_list (const ipa_auto_call_arg_values *aavals)
545 : 53594678 : : 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 : 1176984 : 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 : 18991843 : ipa_call_arg_values (ipa_auto_call_arg_values *aavals)
566 : 18991843 : : m_known_vals (aavals->m_known_vals.to_vec_legacy ()),
567 : 18991843 : m_known_contexts (aavals->m_known_contexts.to_vec_legacy ()),
568 : 18991843 : m_known_aggs (aavals->m_known_aggs.to_vec_legacy ()),
569 : 18991843 : 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 : 154245 : tree safe_sval_at (int index)
575 : : {
576 : 154245 : if ((unsigned) index < m_known_vals.length ())
577 : 93776 : 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 : 2487769 : ipa_argagg_value_list
596 : 2487769 : ::ipa_argagg_value_list (const ipa_call_arg_values *gavals)
597 : 3102207 : : 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 : : /* Whether we should create a specialized version based on values that are
662 : : known to be constant in all contexts. */
663 : : unsigned do_clone_for_all_contexts : 1;
664 : : /* Set if this is an IPA-CP clone for all contexts. */
665 : : unsigned is_all_contexts_clone : 1;
666 : : /* Node has been completely replaced by clones and will be removed after
667 : : ipa-cp is finished. */
668 : : unsigned node_dead : 1;
669 : : /* Node is involved in a recursion, potentionally indirect. */
670 : : unsigned node_within_scc : 1;
671 : : /* Node contains only direct recursion. */
672 : : unsigned node_is_self_scc : 1;
673 : : /* Node is calling a private function called only once. */
674 : : unsigned node_calling_single_call : 1;
675 : : /* False when there is something makes versioning impossible. */
676 : : unsigned versionable : 1;
677 : : };
678 : :
679 : : inline
680 : 7084081 : ipa_node_params::ipa_node_params ()
681 : 7084081 : : descriptors (NULL), lattices (vNULL), ipcp_orig_node (NULL),
682 : 7084081 : known_csts (vNULL), known_contexts (vNULL), analysis_done (0),
683 : 7084081 : node_enqueued (0), do_clone_for_all_contexts (0), is_all_contexts_clone (0),
684 : 7084081 : node_dead (0), node_within_scc (0), node_is_self_scc (0),
685 : 7084081 : node_calling_single_call (0), versionable (0)
686 : : {
687 : : }
688 : :
689 : : inline
690 : 7084080 : ipa_node_params::~ipa_node_params ()
691 : : {
692 : 7084080 : vec_free (descriptors);
693 : 7084080 : lattices.release ();
694 : 7084080 : known_csts.release ();
695 : 7084080 : known_contexts.release ();
696 : 7084080 : }
697 : :
698 : : /* Intermediate information that we get from alias analysis about a particular
699 : : parameter in a particular basic_block. When a parameter or the memory it
700 : : references is marked modified, we use that information in all dominated
701 : : blocks without consulting alias analysis oracle. */
702 : :
703 : : struct ipa_param_aa_status
704 : : {
705 : : /* Set when this structure contains meaningful information. If not, the
706 : : structure describing a dominating BB should be used instead. */
707 : : bool valid;
708 : :
709 : : /* Whether we have seen something which might have modified the data in
710 : : question. PARM is for the parameter itself, REF is for data it points to
711 : : but using the alias type of individual accesses and PT is the same thing
712 : : but for computing aggregate pass-through functions using a very inclusive
713 : : ao_ref. */
714 : : bool parm_modified, ref_modified, pt_modified;
715 : : };
716 : :
717 : : /* Information related to a given BB that used only when looking at function
718 : : body. */
719 : :
720 : : struct ipa_bb_info
721 : : {
722 : : /* Call graph edges going out of this BB. */
723 : : vec<cgraph_edge *> cg_edges;
724 : : /* Alias analysis statuses of each formal parameter at this bb. */
725 : : vec<ipa_param_aa_status> param_aa_statuses;
726 : : };
727 : :
728 : : /* Structure with global information that is only used when looking at function
729 : : body. */
730 : :
731 : : struct ipa_func_body_info
732 : : {
733 : : /* The node that is being analyzed. */
734 : : cgraph_node *node;
735 : :
736 : : /* Its info. */
737 : : class ipa_node_params *info;
738 : :
739 : : /* Information about individual BBs. */
740 : : vec<ipa_bb_info> bb_infos;
741 : :
742 : : /* Number of parameters. */
743 : : int param_count;
744 : :
745 : : /* Number of statements we are still allowed to walked by when analyzing this
746 : : function. */
747 : : unsigned int aa_walk_budget;
748 : : };
749 : :
750 : : /* ipa_node_params access functions. Please use these to access fields that
751 : : are or will be shared among various passes. */
752 : :
753 : : /* Return the number of formal parameters. */
754 : :
755 : : inline int
756 : 77468066 : ipa_get_param_count (class ipa_node_params *info)
757 : : {
758 : 149865363 : return vec_safe_length (info->descriptors);
759 : : }
760 : :
761 : : /* Return the parameter declaration in DESCRIPTORS at index I and assert it is
762 : : indeed a PARM_DECL. */
763 : :
764 : : inline tree
765 : 2469025 : ipa_get_param (const vec<ipa_param_descriptor, va_gc> &descriptors, int i)
766 : : {
767 : 2469025 : tree t = descriptors[i].decl_or_type;
768 : 2469025 : gcc_checking_assert (TREE_CODE (t) == PARM_DECL);
769 : 2469025 : return t;
770 : : }
771 : :
772 : : /* Return the declaration of Ith formal parameter of the function corresponding
773 : : to INFO. Note there is no setter function as this array is built just once
774 : : using ipa_initialize_node_params. This function should not be called in
775 : : WPA. */
776 : :
777 : : inline tree
778 : 2469025 : ipa_get_param (class ipa_node_params *info, int i)
779 : : {
780 : 2469025 : gcc_checking_assert (info->descriptors);
781 : 2469025 : return ipa_get_param (*info->descriptors, i);
782 : : }
783 : :
784 : : /* Return the type of Ith formal parameter of the function corresponding
785 : : to INFO if it is known or NULL if not. */
786 : :
787 : : inline tree
788 : 24629544 : ipa_get_type (class ipa_node_params *info, int i)
789 : : {
790 : 24629544 : if (vec_safe_length (info->descriptors) <= (unsigned) i)
791 : : return NULL;
792 : 24392452 : tree t = (*info->descriptors)[i].decl_or_type;
793 : 24392452 : if (!t)
794 : : return NULL;
795 : 24392452 : if (TYPE_P (t))
796 : : return t;
797 : 22946286 : gcc_checking_assert (TREE_CODE (t) == PARM_DECL);
798 : 22946286 : return TREE_TYPE (t);
799 : : }
800 : :
801 : : /* Return the move cost of Ith formal parameter of the function corresponding
802 : : to INFO. */
803 : :
804 : : inline int
805 : 315093 : ipa_get_param_move_cost (class ipa_node_params *info, int i)
806 : : {
807 : 315093 : gcc_checking_assert (info->descriptors);
808 : 315093 : return (*info->descriptors)[i].move_cost;
809 : : }
810 : :
811 : : /* Set the used flag corresponding to the Ith formal parameter of the function
812 : : associated with INFO to VAL. */
813 : :
814 : : inline void
815 : 2544678 : ipa_set_param_used (class ipa_node_params *info, int i, bool val)
816 : : {
817 : 2544678 : gcc_checking_assert (info->descriptors);
818 : 2544678 : (*info->descriptors)[i].used = val;
819 : 2544678 : }
820 : :
821 : : /* Set the used_by_ipa_predicates flag corresponding to the Ith formal
822 : : parameter of the function associated with INFO to VAL. */
823 : :
824 : : inline void
825 : 7771342 : ipa_set_param_used_by_ipa_predicates (class ipa_node_params *info, int i, bool val)
826 : : {
827 : 7771342 : gcc_checking_assert (info->descriptors);
828 : 7771342 : (*info->descriptors)[i].used_by_ipa_predicates = val;
829 : 7771342 : }
830 : :
831 : : /* Set the used_by_indirect_call flag corresponding to the Ith formal
832 : : parameter of the function associated with INFO to VAL. */
833 : :
834 : : inline void
835 : 21984 : ipa_set_param_used_by_indirect_call (class ipa_node_params *info, int i, bool val)
836 : : {
837 : 21984 : gcc_checking_assert (info->descriptors);
838 : 21984 : (*info->descriptors)[i].used_by_indirect_call = val;
839 : 21984 : }
840 : :
841 : : /* Set the .used_by_polymorphic_call flag corresponding to the Ith formal
842 : : parameter of the function associated with INFO to VAL. */
843 : :
844 : : inline void
845 : 13900 : ipa_set_param_used_by_polymorphic_call (class ipa_node_params *info, int i, bool val)
846 : : {
847 : 13900 : gcc_checking_assert (info->descriptors);
848 : 13900 : (*info->descriptors)[i].used_by_polymorphic_call = val;
849 : 13900 : }
850 : :
851 : : /* Return how many uses described by ipa-prop a parameter has or
852 : : IPA_UNDESCRIBED_USE if there is a use that is not described by these
853 : : structures. */
854 : : inline int
855 : 1177140 : ipa_get_controlled_uses (class ipa_node_params *info, int i)
856 : : {
857 : : /* FIXME: introducing speculation causes out of bounds access here. */
858 : 1177140 : if (vec_safe_length (info->descriptors) > (unsigned)i)
859 : 1177131 : return (*info->descriptors)[i].controlled_uses;
860 : : return IPA_UNDESCRIBED_USE;
861 : : }
862 : :
863 : : /* Set the controlled counter of a given parameter. */
864 : :
865 : : inline void
866 : 2892941 : ipa_set_controlled_uses (class ipa_node_params *info, int i, int val)
867 : : {
868 : 2892941 : gcc_checking_assert (info->descriptors);
869 : 2892941 : (*info->descriptors)[i].controlled_uses = val;
870 : 2892941 : }
871 : :
872 : : /* Assuming a parameter does not have IPA_UNDESCRIBED_USE controlled uses,
873 : : return flag which indicates it has been dereferenced but only in a load. */
874 : : inline int
875 : 224777 : ipa_get_param_load_dereferenced (class ipa_node_params *info, int i)
876 : : {
877 : 224777 : gcc_assert (ipa_get_controlled_uses (info, i) != IPA_UNDESCRIBED_USE);
878 : 224777 : return (*info->descriptors)[i].load_dereferenced;
879 : : }
880 : :
881 : : /* Set the load_dereferenced flag of a given parameter. */
882 : :
883 : : inline void
884 : 2657520 : ipa_set_param_load_dereferenced (class ipa_node_params *info, int i, bool val)
885 : : {
886 : 2657520 : gcc_checking_assert (info->descriptors);
887 : 2657520 : (*info->descriptors)[i].load_dereferenced = val;
888 : 2657520 : }
889 : :
890 : : /* Return the used flag corresponding to the Ith formal parameter of the
891 : : function associated with INFO. */
892 : :
893 : : inline bool
894 : 9544390 : ipa_is_param_used (class ipa_node_params *info, int i)
895 : : {
896 : 9544390 : gcc_checking_assert (info->descriptors);
897 : 9544390 : return (*info->descriptors)[i].used;
898 : : }
899 : :
900 : : /* Return the used_by_ipa_predicates flag corresponding to the Ith formal
901 : : parameter of the function associated with INFO. */
902 : :
903 : : inline bool
904 : 45698913 : ipa_is_param_used_by_ipa_predicates (class ipa_node_params *info, int i)
905 : : {
906 : 45698913 : gcc_checking_assert (info->descriptors);
907 : 45698913 : return (*info->descriptors)[i].used_by_ipa_predicates;
908 : : }
909 : :
910 : : /* Return the used_by_indirect_call flag corresponding to the Ith formal
911 : : parameter of the function associated with INFO. */
912 : :
913 : : inline bool
914 : 47793321 : ipa_is_param_used_by_indirect_call (class ipa_node_params *info, int i)
915 : : {
916 : 47793321 : gcc_checking_assert (info->descriptors);
917 : 47793321 : return (*info->descriptors)[i].used_by_indirect_call;
918 : : }
919 : :
920 : : /* Return the used_by_polymorphic_call flag corresponding to the Ith formal
921 : : parameter of the function associated with INFO. */
922 : :
923 : : inline bool
924 : 38195444 : ipa_is_param_used_by_polymorphic_call (class ipa_node_params *info, int i)
925 : : {
926 : 38195444 : gcc_checking_assert (info->descriptors);
927 : 38195444 : return (*info->descriptors)[i].used_by_polymorphic_call;
928 : : }
929 : :
930 : : /* GTY-marked structure used to map DECL_UIDs of APRAMs to their indices in
931 : : their DECL_ARGUMENTs chain. */
932 : : struct GTY(()) ipa_uid_to_idx_map_elt
933 : : {
934 : : /* DECL_UID of the PARAM. */
935 : : unsigned uid;
936 : : /* Its index in the DECL_ARGUMETs chain. */
937 : : unsigned index;
938 : : };
939 : :
940 : : /* Structure holding information for the transformation phase of IPA-CP. */
941 : :
942 : : struct GTY(()) ipcp_transformation
943 : : {
944 : : /* Default constructor. */
945 : 130739 : ipcp_transformation ()
946 : 130739 : : m_agg_values (nullptr), m_vr (nullptr), m_uid_to_idx (nullptr)
947 : : { }
948 : :
949 : : /* Default destructor. */
950 : 130719 : ~ipcp_transformation ()
951 : : {
952 : 130719 : vec_free (m_agg_values);
953 : 130719 : vec_free (m_vr);
954 : 130719 : }
955 : :
956 : : /* Given PARAM which must be a parameter of function FNDECL described by
957 : : THIS, return its index in the DECL_ARGUMENTS chain, using a pre-computed
958 : : DECL_UID-sorted vector if available (which is pre-computed only if there
959 : : are many parameters). Can return -1 if param is static chain not
960 : : represented among DECL_ARGUMENTS. */
961 : :
962 : : int get_param_index (const_tree fndecl, const_tree param) const;
963 : :
964 : : /* Assuming THIS describes FNDECL and it has sufficiently many parameters to
965 : : justify the overhead, create a DECL_UID-sorted vector to speed up mapping
966 : : from parameters to their indices in DECL_ARGUMENTS chain. */
967 : :
968 : : void maybe_create_parm_idx_map (tree fndecl);
969 : :
970 : : /* Remove all elements in m_agg_values on which PREDICATE returns true. */
971 : :
972 : : template<typename pred_function>
973 : 9268 : void remove_argaggs_if (pred_function &&predicate)
974 : : {
975 : 9268 : unsigned ts_len = vec_safe_length (m_agg_values);
976 : 3951 : if (ts_len == 0)
977 : : return;
978 : :
979 : : bool removed_item = false;
980 : : unsigned dst_index = 0;
981 : :
982 : 22683 : for (unsigned i = 0; i < ts_len; i++)
983 : : {
984 : 18732 : ipa_argagg_value *v = &(*m_agg_values)[i];
985 : 18732 : if (!predicate (*v))
986 : : {
987 : 18615 : if (removed_item)
988 : 22 : (*m_agg_values)[dst_index] = *v;
989 : 18615 : dst_index++;
990 : : }
991 : : else
992 : : removed_item = true;
993 : : }
994 : 3951 : if (dst_index == 0)
995 : : {
996 : 35 : ggc_free (m_agg_values);
997 : 35 : m_agg_values = NULL;
998 : : }
999 : 3916 : else if (removed_item)
1000 : 22 : m_agg_values->truncate (dst_index);
1001 : : }
1002 : :
1003 : : /* Known aggregate values. */
1004 : : vec<ipa_argagg_value, va_gc> *m_agg_values;
1005 : : /* Value range information. */
1006 : : vec<ipa_vr, va_gc> *m_vr;
1007 : : /* If there are many parameters, this is a vector sorted by their DECL_UIDs
1008 : : to map them to their indices in the DECL_ARGUMENT chain. */
1009 : : vec<ipa_uid_to_idx_map_elt, va_gc> *m_uid_to_idx;
1010 : : };
1011 : :
1012 : : inline
1013 : 54213 : ipa_argagg_value_list::ipa_argagg_value_list (const ipcp_transformation *tinfo)
1014 : 108426 : : m_elts (tinfo->m_agg_values)
1015 : : {}
1016 : :
1017 : : void ipa_set_node_agg_value_chain (struct cgraph_node *node,
1018 : : vec<ipa_argagg_value, va_gc> *aggs);
1019 : : void ipcp_transformation_initialize (void);
1020 : : void ipcp_free_transformation_sum (void);
1021 : :
1022 : : /* ipa_edge_args stores information related to a callsite and particularly its
1023 : : arguments. It can be accessed by the IPA_EDGE_REF macro. */
1024 : :
1025 : : class GTY((for_user)) ipa_edge_args
1026 : : {
1027 : : public:
1028 : :
1029 : : /* Default constructor. */
1030 : 4282530 : ipa_edge_args () : jump_functions (NULL), polymorphic_call_contexts (NULL)
1031 : : {}
1032 : :
1033 : : /* Destructor. */
1034 : 4282530 : ~ipa_edge_args ()
1035 : : {
1036 : 4282530 : unsigned int i;
1037 : 4282530 : ipa_jump_func *jf;
1038 : 13507508 : FOR_EACH_VEC_SAFE_ELT (jump_functions, i, jf)
1039 : 9645378 : vec_free (jf->agg.items);
1040 : 4282530 : vec_free (jump_functions);
1041 : 4282530 : vec_free (polymorphic_call_contexts);
1042 : 4282530 : }
1043 : :
1044 : : /* Vectors of the callsite's jump function and polymorphic context
1045 : : information of each parameter. */
1046 : : vec<ipa_jump_func, va_gc> *jump_functions;
1047 : : vec<ipa_polymorphic_call_context, va_gc> *polymorphic_call_contexts;
1048 : : };
1049 : :
1050 : : /* ipa_edge_args access functions. Please use these to access fields that
1051 : : are or will be shared among various passes. */
1052 : :
1053 : : /* Return the number of actual arguments. */
1054 : :
1055 : : inline int
1056 : 23740053 : ipa_get_cs_argument_count (class ipa_edge_args *args)
1057 : : {
1058 : 46272421 : return vec_safe_length (args->jump_functions);
1059 : : }
1060 : :
1061 : : /* Returns a pointer to the jump function for the ith argument. Please note
1062 : : there is no setter function as jump functions are all set up in
1063 : : ipa_compute_jump_functions. */
1064 : :
1065 : : inline struct ipa_jump_func *
1066 : 51100420 : ipa_get_ith_jump_func (class ipa_edge_args *args, int i)
1067 : : {
1068 : 48496129 : return &(*args->jump_functions)[i];
1069 : : }
1070 : :
1071 : : /* Returns a pointer to the polymorphic call context for the ith argument.
1072 : : NULL if contexts are not computed. */
1073 : : inline class ipa_polymorphic_call_context *
1074 : 7819776 : ipa_get_ith_polymorhic_call_context (class ipa_edge_args *args, int i)
1075 : : {
1076 : 7817148 : if (!args->polymorphic_call_contexts)
1077 : : return NULL;
1078 : 3841793 : return &(*args->polymorphic_call_contexts)[i];
1079 : : }
1080 : :
1081 : : /* Function summary for ipa_node_params. */
1082 : : class GTY((user)) ipa_node_params_t: public function_summary <ipa_node_params *>
1083 : : {
1084 : : public:
1085 : 5172748 : ipa_node_params_t (symbol_table *table, bool ggc):
1086 : 5172748 : function_summary<ipa_node_params *> (table, ggc)
1087 : : {
1088 : 5172748 : disable_insertion_hook ();
1089 : 5172748 : }
1090 : :
1091 : : /* Hook that is called by summary when a node is duplicated. */
1092 : : void duplicate (cgraph_node *node,
1093 : : cgraph_node *node2,
1094 : : ipa_node_params *data,
1095 : : ipa_node_params *data2) final override;
1096 : : };
1097 : :
1098 : : /* Summary to manange ipa_edge_args structures. */
1099 : :
1100 : : class GTY((user)) ipa_edge_args_sum_t : public call_summary <ipa_edge_args *>
1101 : : {
1102 : : public:
1103 : 241829 : ipa_edge_args_sum_t (symbol_table *table, bool ggc)
1104 : 241829 : : call_summary<ipa_edge_args *> (table, ggc) { }
1105 : :
1106 : 848755 : void remove (cgraph_edge *edge)
1107 : : {
1108 : 848755 : call_summary <ipa_edge_args *>::remove (edge);
1109 : 848755 : }
1110 : :
1111 : : /* Hook that is called by summary when an edge is removed. */
1112 : : void remove (cgraph_edge *cs, ipa_edge_args *args) final override;
1113 : : /* Hook that is called by summary when an edge is duplicated. */
1114 : : void duplicate (cgraph_edge *src,
1115 : : cgraph_edge *dst,
1116 : : ipa_edge_args *old_args,
1117 : : ipa_edge_args *new_args) final override;
1118 : : };
1119 : :
1120 : : /* Function summary where the parameter infos are actually stored. */
1121 : : extern GTY(()) ipa_node_params_t * ipa_node_params_sum;
1122 : : /* Call summary to store information about edges such as jump functions. */
1123 : : extern GTY(()) ipa_edge_args_sum_t *ipa_edge_args_sum;
1124 : :
1125 : : /* Function summary for IPA-CP transformation. */
1126 : : class ipcp_transformation_t
1127 : : : public function_summary<ipcp_transformation *>
1128 : : {
1129 : : public:
1130 : 18957 : ipcp_transformation_t (symbol_table *table, bool ggc):
1131 : 37914 : function_summary<ipcp_transformation *> (table, ggc) {}
1132 : :
1133 : 18948 : ~ipcp_transformation_t () {}
1134 : :
1135 : 18957 : static ipcp_transformation_t *create_ggc (symbol_table *symtab)
1136 : : {
1137 : 18957 : ipcp_transformation_t *summary
1138 : 18957 : = new (ggc_alloc_no_dtor <ipcp_transformation_t> ())
1139 : 18957 : ipcp_transformation_t (symtab, true);
1140 : 18957 : return summary;
1141 : : }
1142 : : /* Hook that is called by summary when a node is duplicated. */
1143 : : void duplicate (cgraph_node *node,
1144 : : cgraph_node *node2,
1145 : : ipcp_transformation *data,
1146 : : ipcp_transformation *data2) final override;
1147 : : };
1148 : :
1149 : : /* Function summary where the IPA CP transformations are actually stored. */
1150 : : extern GTY(()) function_summary <ipcp_transformation *> *ipcp_transformation_sum;
1151 : :
1152 : : /* Creating and freeing ipa_node_params and ipa_edge_args. */
1153 : : void ipa_create_all_node_params (void);
1154 : : void ipa_create_all_edge_args (void);
1155 : : void ipa_check_create_edge_args (void);
1156 : : void ipa_free_all_node_params (void);
1157 : : void ipa_free_all_edge_args (void);
1158 : : void ipa_free_all_structures_after_ipa_cp (void);
1159 : : void ipa_free_all_structures_after_iinln (void);
1160 : :
1161 : : void ipa_register_cgraph_hooks (void);
1162 : : int count_formal_params (tree fndecl);
1163 : :
1164 : : /* This function ensures the array of node param infos is big enough to
1165 : : accommodate a structure for all nodes and reallocates it if not. */
1166 : :
1167 : : inline void
1168 : 8093138 : ipa_check_create_node_params (void)
1169 : : {
1170 : 8093138 : if (!ipa_node_params_sum)
1171 : 5172748 : ipa_node_params_sum
1172 : 10345496 : = (new (ggc_alloc_no_dtor <ipa_node_params_t> ())
1173 : 5172748 : ipa_node_params_t (symtab, true));
1174 : 8093138 : }
1175 : :
1176 : : /* Returns true if edge summary contains a record for EDGE. The main purpose
1177 : : of this function is that debug dumping function can check info availability
1178 : : without causing allocations. */
1179 : :
1180 : : inline bool
1181 : 1156 : ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge)
1182 : : {
1183 : 1156 : return ipa_edge_args_sum->exists (edge);
1184 : : }
1185 : :
1186 : : inline ipcp_transformation *
1187 : 18067505 : ipcp_get_transformation_summary (cgraph_node *node)
1188 : : {
1189 : 18067505 : if (ipcp_transformation_sum == NULL)
1190 : : return NULL;
1191 : :
1192 : 6541214 : return ipcp_transformation_sum->get (node);
1193 : : }
1194 : :
1195 : : /* Function formal parameters related computations. */
1196 : : void ipa_initialize_node_params (struct cgraph_node *node);
1197 : : void ipa_print_constant_value (FILE *f, tree val);
1198 : : bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs,
1199 : : vec<cgraph_edge *> *new_edges);
1200 : :
1201 : : /* Indirect edge processing and target discovery. */
1202 : : tree ipa_get_indirect_edge_target (struct cgraph_edge *ie,
1203 : : ipa_call_arg_values *avals,
1204 : : bool *speculative);
1205 : : struct cgraph_edge *ipa_make_edge_direct_to_target (struct cgraph_edge *, tree,
1206 : : bool speculative = false);
1207 : : tree ipa_impossible_devirt_target (struct cgraph_edge *, tree);
1208 : :
1209 : :
1210 : : /* Functions related to both. */
1211 : : void ipa_analyze_node (struct cgraph_node *);
1212 : :
1213 : : /* Aggregate jump function related functions. */
1214 : : tree ipa_find_agg_cst_from_init (tree scalar, HOST_WIDE_INT offset,
1215 : : bool by_ref);
1216 : : bool ipa_load_from_parm_agg (struct ipa_func_body_info *fbi,
1217 : : vec<ipa_param_descriptor, va_gc> *descriptors,
1218 : : gimple *stmt, tree op, int *index_p,
1219 : : HOST_WIDE_INT *offset_p, poly_int64 *size_p,
1220 : : bool *by_ref, bool *guaranteed_unmodified = NULL);
1221 : :
1222 : : /* Debugging interface. */
1223 : : void ipa_print_node_params (FILE *, struct cgraph_node *node);
1224 : : void ipa_print_all_params (FILE *);
1225 : : void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node);
1226 : : void ipa_print_all_jump_functions (FILE * f);
1227 : : void ipcp_verify_propagated_values (void);
1228 : :
1229 : : template <typename value>
1230 : : class ipcp_value;
1231 : :
1232 : : extern object_allocator<ipcp_value<tree> > ipcp_cst_values_pool;
1233 : : extern object_allocator<ipcp_value<ipa_polymorphic_call_context> >
1234 : : ipcp_poly_ctx_values_pool;
1235 : :
1236 : : template <typename valtype>
1237 : : struct ipcp_value_source;
1238 : :
1239 : : extern object_allocator<ipcp_value_source<tree> > ipcp_sources_pool;
1240 : :
1241 : : struct ipcp_agg_lattice;
1242 : :
1243 : : extern object_allocator<ipcp_agg_lattice> ipcp_agg_lattice_pool;
1244 : :
1245 : : void ipa_prop_write_jump_functions (void);
1246 : : void ipa_prop_read_jump_functions (void);
1247 : : void ipcp_write_transformation_summaries (void);
1248 : : void ipcp_read_transformation_summaries (void);
1249 : : int ipa_get_param_decl_index (class ipa_node_params *, tree);
1250 : : tree ipa_value_from_jfunc (class ipa_node_params *info,
1251 : : struct ipa_jump_func *jfunc, tree type);
1252 : : tree ipa_agg_value_from_jfunc (ipa_node_params *info, cgraph_node *node,
1253 : : const ipa_agg_jf_item *item);
1254 : : unsigned int ipcp_transform_function (struct cgraph_node *node);
1255 : : ipa_polymorphic_call_context ipa_context_from_jfunc (ipa_node_params *,
1256 : : cgraph_edge *,
1257 : : int,
1258 : : ipa_jump_func *);
1259 : : void ipa_value_range_from_jfunc (vrange &, ipa_node_params *, cgraph_edge *,
1260 : : ipa_jump_func *, tree);
1261 : : void ipa_push_agg_values_from_jfunc (ipa_node_params *info, cgraph_node *node,
1262 : : ipa_agg_jump_function *agg_jfunc,
1263 : : unsigned dst_index,
1264 : : vec<ipa_argagg_value> *res);
1265 : : void ipa_dump_param (FILE *, class ipa_node_params *info, int i);
1266 : : void ipa_dump_jump_function (FILE *f, ipa_jump_func *jfunc,
1267 : : class ipa_polymorphic_call_context *ctx = NULL);
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 : : void ipa_prop_cc_finalize (void);
1278 : :
1279 : : /* From tree-sra.cc: */
1280 : : tree build_ref_for_offset (location_t, tree, poly_int64, bool, tree,
1281 : : gimple_stmt_iterator *, bool);
1282 : :
1283 : : /* In ipa-cp.cc */
1284 : : void ipa_cp_cc_finalize (void);
1285 : : bool ipa_return_value_range (value_range &range, tree decl);
1286 : : void ipa_record_return_value_range (value_range val);
1287 : : bool ipa_jump_functions_equivalent_p (ipa_jump_func *jf1, ipa_jump_func *jf2);
1288 : :
1289 : :
1290 : : #endif /* IPA_PROP_H */
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