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518dc859 | 1 | /* Interprocedural analyses. |
7adcbafe | 2 | Copyright (C) 2005-2022 Free Software Foundation, Inc. |
518dc859 RL |
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 | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
518dc859 RL |
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 | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
518dc859 RL |
19 | |
20 | #ifndef IPA_PROP_H | |
21 | #define IPA_PROP_H | |
22 | ||
518dc859 | 23 | /* The following definitions and interfaces are used by |
133f9369 MJ |
24 | interprocedural analyses or parameters. */ |
25 | ||
4502fe8d MJ |
26 | #define IPA_UNDESCRIBED_USE -1 |
27 | ||
e0403e95 MJ |
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 | ||
e53b6e56 | 33 | /* ipa-prop.cc stuff (ipa-cp, indirect inlining): */ |
518dc859 | 34 | |
be95e2b9 | 35 | /* A jump function for a callsite represents the values passed as actual |
310bc633 MJ |
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 : | |
685b0d13 MJ |
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 | ||
eb270950 FX |
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 | ||
b258210c MJ |
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 | |
026c3cfd | 59 | getting addresses of ancestor fields in C++ |
b258210c MJ |
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 | ||
e53b6e56 | 67 | Jump functions are computed in ipa-prop.cc by function |
b258210c MJ |
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. */ | |
685b0d13 | 71 | |
518dc859 RL |
72 | enum jump_func_type |
73 | { | |
133f9369 | 74 | IPA_JF_UNKNOWN = 0, /* newly allocated and zeroed jump functions default */ |
b258210c | 75 | IPA_JF_CONST, /* represented by field costant */ |
b258210c | 76 | IPA_JF_PASS_THROUGH, /* represented by field pass_through */ |
eb270950 | 77 | IPA_JF_LOAD_AGG, /* represented by field load_agg */ |
b258210c | 78 | IPA_JF_ANCESTOR /* represented by field ancestor */ |
518dc859 RL |
79 | }; |
80 | ||
4502fe8d MJ |
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 | { | |
e66236c6 | 86 | /* The value of the constant. */ |
4502fe8d MJ |
87 | tree value; |
88 | /* Pointer to the structure that describes the reference. */ | |
89 | struct ipa_cst_ref_desc GTY((skip)) *rdesc; | |
90 | }; | |
91 | ||
685b0d13 MJ |
92 | /* Structure holding data required to describe a pass-through jump function. */ |
93 | ||
fb3f88cc | 94 | struct GTY(()) ipa_pass_through_data |
685b0d13 MJ |
95 | { |
96 | /* If an operation is to be performed on the original parameter, this is the | |
97 | second (constant) operand. */ | |
98 | tree operand; | |
99 | /* Number of the caller's formal parameter being passed. */ | |
100 | int formal_id; | |
101 | /* Operation that is performed on the argument before it is passed on. | |
f38a33a2 MJ |
102 | Special values which have other meaning than in normal contexts: |
103 | - NOP_EXPR means no operation, not even type conversion. | |
104 | - ASSERT_EXPR means that only the value in operand is allowed to pass | |
105 | through (without any change), for all other values the result is | |
106 | unknown. | |
107 | Otherwise operation must be a simple binary or unary arithmetic operation | |
108 | where the caller's parameter is the first operand and (for binary | |
109 | operations) the operand field from this structure is the second one. */ | |
685b0d13 | 110 | enum tree_code operation; |
8b7773a4 MJ |
111 | /* When the passed value is a pointer, it is set to true only when we are |
112 | certain that no write to the object it points to has occurred since the | |
113 | caller functions started execution, except for changes noted in the | |
114 | aggregate part of the jump function (see description of | |
115 | ipa_agg_jump_function). The flag is used only when the operation is | |
116 | NOP_EXPR. */ | |
b8f6e610 | 117 | unsigned agg_preserved : 1; |
685b0d13 MJ |
118 | }; |
119 | ||
eb270950 FX |
120 | /* Structure holding data required to describe a load-value-from-aggregate |
121 | jump function. */ | |
122 | ||
123 | struct GTY(()) ipa_load_agg_data | |
124 | { | |
125 | /* Inherit from pass through jump function, describing unary/binary | |
126 | operation on the value loaded from aggregate that is represented or | |
127 | pointed to by the formal parameter, specified by formal_id in this | |
128 | pass_through jump function data structure. */ | |
129 | struct ipa_pass_through_data pass_through; | |
130 | /* Type of the value loaded from the aggregate. */ | |
131 | tree type; | |
132 | /* Offset at which the value is located within the aggregate. */ | |
133 | HOST_WIDE_INT offset; | |
134 | /* True if loaded by reference (the aggregate is pointed to by the formal | |
135 | parameter) or false if loaded by value (the aggregate is represented | |
136 | by the formal parameter). */ | |
137 | bool by_ref; | |
138 | }; | |
139 | ||
b258210c MJ |
140 | /* Structure holding data required to describe an ancestor pass-through |
141 | jump function. */ | |
685b0d13 | 142 | |
fb3f88cc | 143 | struct GTY(()) ipa_ancestor_jf_data |
685b0d13 MJ |
144 | { |
145 | /* Offset of the field representing the ancestor. */ | |
146 | HOST_WIDE_INT offset; | |
685b0d13 MJ |
147 | /* Number of the caller's formal parameter being passed. */ |
148 | int formal_id; | |
8b7773a4 | 149 | /* Flag with the same meaning like agg_preserve in ipa_pass_through_data. */ |
b8f6e610 | 150 | unsigned agg_preserved : 1; |
7ea3a73c MJ |
151 | /* When set, the operation should not have any effect on NULL pointers. */ |
152 | unsigned keep_null : 1; | |
685b0d13 MJ |
153 | }; |
154 | ||
eb270950 FX |
155 | /* A jump function for an aggregate part at a given offset, which describes how |
156 | it content value is generated. All unlisted positions are assumed to have a | |
157 | value defined in an unknown way. */ | |
8b7773a4 | 158 | |
84562394 | 159 | struct GTY(()) ipa_agg_jf_item |
8b7773a4 | 160 | { |
eb270950 | 161 | /* The offset for the aggregate part. */ |
8b7773a4 MJ |
162 | HOST_WIDE_INT offset; |
163 | ||
eb270950 FX |
164 | /* Data type of the aggregate part. */ |
165 | tree type; | |
ac6f2e59 | 166 | |
eb270950 FX |
167 | /* Jump function type. */ |
168 | enum jump_func_type jftype; | |
8b7773a4 | 169 | |
eb270950 FX |
170 | /* Represents a value of jump function. constant represents the actual constant |
171 | in constant jump function content. pass_through is used only in simple pass | |
172 | through jump function context. load_agg is for load-value-from-aggregate | |
173 | jump function context. */ | |
174 | union jump_func_agg_value | |
175 | { | |
176 | tree GTY ((tag ("IPA_JF_CONST"))) constant; | |
177 | struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through; | |
178 | struct ipa_load_agg_data GTY ((tag ("IPA_JF_LOAD_AGG"))) load_agg; | |
179 | } GTY ((desc ("%1.jftype"))) value; | |
180 | }; | |
8b7773a4 | 181 | |
eb270950 | 182 | /* Jump functions describing a set of aggregate contents. */ |
8b7773a4 MJ |
183 | |
184 | struct GTY(()) ipa_agg_jump_function | |
3e293154 | 185 | { |
eb270950 | 186 | /* Description of the individual jump function item. */ |
84562394 | 187 | vec<ipa_agg_jf_item, va_gc> *items; |
eb270950 | 188 | /* True if the data was passed by reference (as opposed to by value). */ |
8b7773a4 | 189 | bool by_ref; |
eb270950 FX |
190 | }; |
191 | ||
e0403e95 | 192 | class ipcp_transformation; |
656b2338 MJ |
193 | class ipa_auto_call_arg_values; |
194 | class ipa_call_arg_values; | |
e0403e95 MJ |
195 | |
196 | /* Element of a vector describing aggregate values for a number of arguments in | |
197 | a particular context, be it a call or the aggregate constants that a node is | |
198 | specialized for. */ | |
199 | ||
200 | struct GTY(()) ipa_argagg_value | |
201 | { | |
202 | /* The constant value. In the contexts where the list of known values is | |
203 | being pruned, NULL means a variable value. */ | |
204 | tree value; | |
205 | /* Unit offset within the aggregate. */ | |
206 | unsigned unit_offset; | |
207 | /* Index of the parameter, as it was in the original function (i.e. needs | |
208 | remapping after parameter modification is carried out as part of clone | |
209 | materialization). */ | |
210 | unsigned index : IPA_PROP_ARG_INDEX_LIMIT_BITS; | |
211 | /* Whether the value was passed by reference. */ | |
212 | unsigned by_ref : 1; | |
213 | }; | |
214 | ||
215 | /* A view into a sorted list of aggregate values in a particular context, be it | |
216 | a call or the aggregate constants that a node is specialized for. The | |
217 | actual data is stored in the vector this has been constructed from. */ | |
218 | ||
219 | class ipa_argagg_value_list | |
220 | { | |
221 | public: | |
222 | ipa_argagg_value_list () = delete; | |
223 | ipa_argagg_value_list (const vec<ipa_argagg_value, va_gc> *values) | |
224 | : m_elts (values) | |
225 | {} | |
226 | ipa_argagg_value_list (const vec<ipa_argagg_value> *values) | |
227 | : m_elts (*values) | |
228 | {} | |
656b2338 MJ |
229 | ipa_argagg_value_list (const ipa_auto_call_arg_values *aavals); |
230 | ipa_argagg_value_list (const ipa_call_arg_values *gavals); | |
e0403e95 MJ |
231 | ipa_argagg_value_list (const ipcp_transformation *tinfo); |
232 | ||
233 | /* Return the aggregate constant stored for INDEX at UNIT_OFFSET, if it is | |
234 | passed by reference or not according to BY_REF, or NULL_TREE | |
235 | otherwise. */ | |
236 | ||
237 | tree get_value (int index, unsigned unit_offset, bool by_ref) const; | |
238 | ||
239 | /* Return the aggregate constant stored for INDEX at UNIT_OFFSET, not | |
240 | performing any check of whether value is passed by reference. Return | |
241 | NULL_TREE if there is no such constant. */ | |
242 | ||
243 | tree get_value (int index, unsigned unit_offset) const; | |
244 | ||
245 | /* Return the item describing a constant stored for INDEX at UNIT_OFFSET or | |
246 | NULL if there is no such constant. */ | |
247 | ||
248 | const ipa_argagg_value *get_elt (int index, unsigned unit_offset) const; | |
249 | ||
656b2338 | 250 | |
e0403e95 MJ |
251 | /* Return the first item describing a constant stored for parameter with |
252 | INDEX, regardless of offset or reference, or NULL if there is no such | |
253 | constant. */ | |
254 | ||
255 | const ipa_argagg_value *get_elt_for_index (int index) const; | |
256 | ||
656b2338 MJ |
257 | /* Return true if there is an aggregate constant referring to a value passed |
258 | in or by parameter with INDEX (at any offset, whether by reference or | |
259 | not). */ | |
260 | ||
261 | bool value_for_index_p (int index) const | |
262 | { | |
263 | return !!get_elt_for_index (index); | |
264 | } | |
265 | ||
e0403e95 MJ |
266 | /* Return true if all elements present in OTHER are also present in this |
267 | list. */ | |
268 | ||
269 | bool superset_of_p (const ipa_argagg_value_list &other) const; | |
270 | ||
271 | /* Push all items in this list that describe parameter SRC_INDEX into RES as | |
272 | ones describing DST_INDEX while subtracting UNIT_DELTA from their unit | |
273 | offsets but skip those which would end up with a negative offset. */ | |
274 | ||
275 | void push_adjusted_values (unsigned src_index, unsigned dest_index, | |
276 | unsigned unit_delta, | |
277 | vec<ipa_argagg_value> *res) const; | |
278 | ||
279 | /* Dump aggregate constants to FILE. */ | |
280 | ||
281 | void dump (FILE *f); | |
282 | ||
283 | /* Dump aggregate constants to stderr. */ | |
284 | ||
285 | void DEBUG_FUNCTION debug (); | |
286 | ||
287 | /* Array slice pointing to the actual storage. */ | |
288 | ||
289 | array_slice<const ipa_argagg_value> m_elts; | |
290 | }; | |
291 | ||
209ca542 | 292 | /* Information about zero/non-zero bits. */ |
6c1dae73 | 293 | class GTY(()) ipa_bits |
209ca542 | 294 | { |
6c1dae73 | 295 | public: |
209ca542 PK |
296 | /* The propagated value. */ |
297 | widest_int value; | |
298 | /* Mask corresponding to the value. | |
299 | Similar to ccp_lattice_t, if xth bit of mask is 0, | |
300 | implies xth bit of value is constant. */ | |
301 | widest_int mask; | |
209ca542 PK |
302 | }; |
303 | ||
8bc5448f | 304 | /* Info about value ranges. */ |
86cd0334 | 305 | |
6c1dae73 | 306 | class GTY(()) ipa_vr |
8bc5448f | 307 | { |
6c1dae73 | 308 | public: |
8bc5448f KV |
309 | /* The data fields below are valid only if known is true. */ |
310 | bool known; | |
54994253 | 311 | enum value_range_kind type; |
8bc5448f KV |
312 | wide_int min; |
313 | wide_int max; | |
523fe5b6 | 314 | bool nonzero_p (tree) const; |
8bc5448f KV |
315 | }; |
316 | ||
be95e2b9 MJ |
317 | /* A jump function for a callsite represents the values passed as actual |
318 | arguments of the callsite. See enum jump_func_type for the various | |
518dc859 | 319 | types of jump functions supported. */ |
84562394 | 320 | struct GTY (()) ipa_jump_func |
518dc859 | 321 | { |
eb270950 FX |
322 | /* Aggregate jump function description. See struct ipa_agg_jump_function |
323 | and its description. */ | |
8b7773a4 MJ |
324 | struct ipa_agg_jump_function agg; |
325 | ||
86cd0334 MJ |
326 | /* Information about zero/non-zero bits. The pointed to structure is shared |
327 | betweed different jump functions. Use ipa_set_jfunc_bits to set this | |
328 | field. */ | |
99b1c316 | 329 | class ipa_bits *bits; |
209ca542 | 330 | |
a5e14a42 | 331 | /* Information about value range, containing valid data only when vr_known is |
86cd0334 MJ |
332 | true. The pointed to structure is shared betweed different jump |
333 | functions. Use ipa_set_jfunc_vr to set this field. */ | |
4ba9fb0a | 334 | value_range *m_vr; |
8bc5448f | 335 | |
518dc859 | 336 | enum jump_func_type type; |
fb3f88cc JH |
337 | /* Represents a value of a jump function. pass_through is used only in jump |
338 | function context. constant represents the actual constant in constant jump | |
339 | functions and member_cst holds constant c++ member functions. */ | |
340 | union jump_func_value | |
341 | { | |
4502fe8d | 342 | struct ipa_constant_data GTY ((tag ("IPA_JF_CONST"))) constant; |
fb3f88cc JH |
343 | struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through; |
344 | struct ipa_ancestor_jf_data GTY ((tag ("IPA_JF_ANCESTOR"))) ancestor; | |
fb3f88cc | 345 | } GTY ((desc ("%1.type"))) value; |
84562394 | 346 | }; |
606d9a09 | 347 | |
518dc859 | 348 | |
7b872d9e MJ |
349 | /* Return the constant stored in a constant jump functin JFUNC. */ |
350 | ||
351 | static inline tree | |
352 | ipa_get_jf_constant (struct ipa_jump_func *jfunc) | |
353 | { | |
354 | gcc_checking_assert (jfunc->type == IPA_JF_CONST); | |
4502fe8d MJ |
355 | return jfunc->value.constant.value; |
356 | } | |
357 | ||
358 | static inline struct ipa_cst_ref_desc * | |
359 | ipa_get_jf_constant_rdesc (struct ipa_jump_func *jfunc) | |
360 | { | |
361 | gcc_checking_assert (jfunc->type == IPA_JF_CONST); | |
362 | return jfunc->value.constant.rdesc; | |
7b872d9e MJ |
363 | } |
364 | ||
365 | /* Return the operand of a pass through jmp function JFUNC. */ | |
366 | ||
367 | static inline tree | |
368 | ipa_get_jf_pass_through_operand (struct ipa_jump_func *jfunc) | |
369 | { | |
370 | gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); | |
371 | return jfunc->value.pass_through.operand; | |
372 | } | |
373 | ||
374 | /* Return the number of the caller's formal parameter that a pass through jump | |
375 | function JFUNC refers to. */ | |
376 | ||
377 | static inline int | |
378 | ipa_get_jf_pass_through_formal_id (struct ipa_jump_func *jfunc) | |
379 | { | |
380 | gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); | |
381 | return jfunc->value.pass_through.formal_id; | |
382 | } | |
383 | ||
384 | /* Return operation of a pass through jump function JFUNC. */ | |
385 | ||
386 | static inline enum tree_code | |
387 | ipa_get_jf_pass_through_operation (struct ipa_jump_func *jfunc) | |
388 | { | |
389 | gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); | |
390 | return jfunc->value.pass_through.operation; | |
391 | } | |
392 | ||
b8f6e610 | 393 | /* Return the agg_preserved flag of a pass through jump function JFUNC. */ |
8b7773a4 MJ |
394 | |
395 | static inline bool | |
396 | ipa_get_jf_pass_through_agg_preserved (struct ipa_jump_func *jfunc) | |
397 | { | |
398 | gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); | |
399 | return jfunc->value.pass_through.agg_preserved; | |
400 | } | |
401 | ||
44210a96 MJ |
402 | /* Return true if pass through jump function JFUNC preserves type |
403 | information. */ | |
b8f6e610 MJ |
404 | |
405 | static inline bool | |
406 | ipa_get_jf_pass_through_type_preserved (struct ipa_jump_func *jfunc) | |
407 | { | |
408 | gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); | |
44210a96 | 409 | return jfunc->value.pass_through.agg_preserved; |
b8f6e610 MJ |
410 | } |
411 | ||
7b872d9e MJ |
412 | /* Return the offset of an ancestor jump function JFUNC. */ |
413 | ||
414 | static inline HOST_WIDE_INT | |
415 | ipa_get_jf_ancestor_offset (struct ipa_jump_func *jfunc) | |
416 | { | |
417 | gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); | |
418 | return jfunc->value.ancestor.offset; | |
419 | } | |
420 | ||
7b872d9e MJ |
421 | /* Return the number of the caller's formal parameter that an ancestor jump |
422 | function JFUNC refers to. */ | |
423 | ||
424 | static inline int | |
425 | ipa_get_jf_ancestor_formal_id (struct ipa_jump_func *jfunc) | |
426 | { | |
427 | gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); | |
428 | return jfunc->value.ancestor.formal_id; | |
429 | } | |
430 | ||
b8f6e610 | 431 | /* Return the agg_preserved flag of an ancestor jump function JFUNC. */ |
7b872d9e | 432 | |
8b7773a4 MJ |
433 | static inline bool |
434 | ipa_get_jf_ancestor_agg_preserved (struct ipa_jump_func *jfunc) | |
7b872d9e | 435 | { |
8b7773a4 MJ |
436 | gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); |
437 | return jfunc->value.ancestor.agg_preserved; | |
7b872d9e MJ |
438 | } |
439 | ||
44210a96 | 440 | /* Return true if ancestor jump function JFUNC presrves type information. */ |
b8f6e610 MJ |
441 | |
442 | static inline bool | |
443 | ipa_get_jf_ancestor_type_preserved (struct ipa_jump_func *jfunc) | |
444 | { | |
445 | gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); | |
44210a96 | 446 | return jfunc->value.ancestor.agg_preserved; |
b8f6e610 MJ |
447 | } |
448 | ||
7ea3a73c MJ |
449 | /* Return if jfunc represents an operation whether we first check the formal |
450 | parameter for non-NULLness unless it does not matter because the offset is | |
451 | zero anyway. */ | |
452 | ||
453 | static inline bool | |
454 | ipa_get_jf_ancestor_keep_null (struct ipa_jump_func *jfunc) | |
455 | { | |
456 | gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); | |
457 | return jfunc->value.ancestor.keep_null; | |
458 | } | |
459 | ||
9d5af1db MJ |
460 | /* Class for allocating a bundle of various potentially known properties about |
461 | actual arguments of a particular call on stack for the usual case and on | |
462 | heap only if there are unusually many arguments. The data is deallocated | |
463 | when the instance of this class goes out of scope or is otherwise | |
464 | destructed. */ | |
465 | ||
466 | class ipa_auto_call_arg_values | |
467 | { | |
468 | public: | |
9d5af1db MJ |
469 | /* If m_known_vals (vector of known "scalar" values) is sufficiantly long, |
470 | return its element at INDEX, otherwise return NULL. */ | |
471 | tree safe_sval_at (int index) | |
472 | { | |
9d5af1db MJ |
473 | if ((unsigned) index < m_known_vals.length ()) |
474 | return m_known_vals[index]; | |
475 | return NULL; | |
476 | } | |
477 | ||
9d5af1db MJ |
478 | /* Vector describing known values of parameters. */ |
479 | auto_vec<tree, 32> m_known_vals; | |
480 | ||
481 | /* Vector describing known polymorphic call contexts. */ | |
482 | auto_vec<ipa_polymorphic_call_context, 32> m_known_contexts; | |
483 | ||
484 | /* Vector describing known aggregate values. */ | |
656b2338 | 485 | auto_vec<ipa_argagg_value, 32> m_known_aggs; |
9d5af1db MJ |
486 | |
487 | /* Vector describing known value ranges of arguments. */ | |
488 | auto_vec<value_range, 32> m_known_value_ranges; | |
489 | }; | |
490 | ||
656b2338 MJ |
491 | inline |
492 | ipa_argagg_value_list | |
493 | ::ipa_argagg_value_list (const ipa_auto_call_arg_values *aavals) | |
494 | : m_elts (aavals->m_known_aggs) | |
495 | {} | |
496 | ||
9d5af1db MJ |
497 | /* Class bundling the various potentially known properties about actual |
498 | arguments of a particular call. This variant does not deallocate the | |
656b2338 MJ |
499 | bundled data in any way as the vectors can either be pointing to vectors in |
500 | ipa_auto_call_arg_values or be allocated independently. */ | |
9d5af1db MJ |
501 | |
502 | class ipa_call_arg_values | |
503 | { | |
504 | public: | |
505 | /* Default constructor, setting the vectors to empty ones. */ | |
506 | ipa_call_arg_values () | |
507 | {} | |
508 | ||
509 | /* Construct this general variant of the bundle from the variant which uses | |
510 | auto_vecs to hold the vectors. This means that vectors of objects | |
511 | constructed with this constructor should not be changed because if they | |
512 | get reallocated, the member vectors and the underlying auto_vecs would get | |
513 | out of sync. */ | |
514 | ipa_call_arg_values (ipa_auto_call_arg_values *aavals) | |
a3d3e8c3 MS |
515 | : m_known_vals (aavals->m_known_vals.to_vec_legacy ()), |
516 | m_known_contexts (aavals->m_known_contexts.to_vec_legacy ()), | |
517 | m_known_aggs (aavals->m_known_aggs.to_vec_legacy ()), | |
518 | m_known_value_ranges (aavals->m_known_value_ranges.to_vec_legacy ()) | |
9d5af1db MJ |
519 | {} |
520 | ||
521 | /* If m_known_vals (vector of known "scalar" values) is sufficiantly long, | |
522 | return its element at INDEX, otherwise return NULL. */ | |
523 | tree safe_sval_at (int index) | |
524 | { | |
9d5af1db MJ |
525 | if ((unsigned) index < m_known_vals.length ()) |
526 | return m_known_vals[index]; | |
527 | return NULL; | |
528 | } | |
529 | ||
9d5af1db MJ |
530 | /* Vector describing known values of parameters. */ |
531 | vec<tree> m_known_vals = vNULL; | |
532 | ||
533 | /* Vector describing known polymorphic call contexts. */ | |
534 | vec<ipa_polymorphic_call_context> m_known_contexts = vNULL; | |
535 | ||
536 | /* Vector describing known aggregate values. */ | |
656b2338 | 537 | vec<ipa_argagg_value> m_known_aggs = vNULL; |
9d5af1db MJ |
538 | |
539 | /* Vector describing known value ranges of arguments. */ | |
540 | vec<value_range> m_known_value_ranges = vNULL; | |
541 | }; | |
542 | ||
656b2338 MJ |
543 | inline |
544 | ipa_argagg_value_list | |
545 | ::ipa_argagg_value_list (const ipa_call_arg_values *gavals) | |
546 | : m_elts (gavals->m_known_aggs) | |
547 | {} | |
9d5af1db | 548 | |
310bc633 | 549 | /* Summary describing a single formal parameter. */ |
b258210c | 550 | |
f65f1ae3 | 551 | struct GTY(()) ipa_param_descriptor |
f8e2a1ed | 552 | { |
209ca542 | 553 | /* In analysis and modification phase, this is the PARAM_DECL of this |
700d4cb0 | 554 | parameter, in IPA LTO phase, this is the type of the described |
209ca542 PK |
555 | parameter or NULL if not known. Do not read this field directly but |
556 | through ipa_get_param and ipa_get_type as appropriate. */ | |
557 | tree decl_or_type; | |
4502fe8d MJ |
558 | /* If all uses of the parameter are described by ipa-prop structures, this |
559 | says how many there are. If any use could not be described by means of | |
13586172 MJ |
560 | ipa-prop structures (which include flag dereferenced below), this is |
561 | IPA_UNDESCRIBED_USE. */ | |
4502fe8d | 562 | int controlled_uses; |
13586172 | 563 | unsigned int move_cost : 27; |
339f49ec JH |
564 | /* The parameter is used. */ |
565 | unsigned used : 1; | |
40a777e8 JH |
566 | unsigned used_by_ipa_predicates : 1; |
567 | unsigned used_by_indirect_call : 1; | |
568 | unsigned used_by_polymorphic_call : 1; | |
13586172 MJ |
569 | /* Set to true when in addition to being used in call statements, the |
570 | parameter has also been used for loads (but not for writes, does not | |
571 | escape, etc.). This allows us to identify parameters p which are only | |
572 | used as *p, and so when we propagate a constant to them, we can generate a | |
573 | LOAD and not ADDR reference to them. */ | |
574 | unsigned load_dereferenced : 1; | |
f8e2a1ed MJ |
575 | }; |
576 | ||
dcd416e3 MJ |
577 | /* ipa_node_params stores information related to formal parameters of functions |
578 | and some other information for interprocedural passes that operate on | |
579 | parameters (such as ipa-cp). */ | |
310bc633 | 580 | |
6c1dae73 | 581 | class GTY((for_user)) ipa_node_params |
518dc859 | 582 | { |
6c1dae73 | 583 | public: |
e806796d ML |
584 | /* Default constructor. */ |
585 | ipa_node_params (); | |
586 | ||
587 | /* Default destructor. */ | |
588 | ~ipa_node_params (); | |
589 | ||
310bc633 MJ |
590 | /* Information about individual formal parameters that are gathered when |
591 | summaries are generated. */ | |
f65f1ae3 | 592 | vec<ipa_param_descriptor, va_gc> *descriptors; |
310bc633 MJ |
593 | /* Pointer to an array of structures describing individual formal |
594 | parameters. */ | |
99b1c316 | 595 | class ipcp_param_lattices * GTY((skip)) lattices; |
310bc633 MJ |
596 | /* Only for versioned nodes this field would not be NULL, |
597 | it points to the node that IPA cp cloned from. */ | |
f65f1ae3 | 598 | struct cgraph_node * GTY((skip)) ipcp_orig_node; |
44210a96 MJ |
599 | /* If this node is an ipa-cp clone, these are the known constants that |
600 | describe what it has been specialized for. */ | |
f65f1ae3 | 601 | vec<tree> GTY((skip)) known_csts; |
44210a96 MJ |
602 | /* If this node is an ipa-cp clone, these are the known polymorphic contexts |
603 | that describe what it has been specialized for. */ | |
f65f1ae3 | 604 | vec<ipa_polymorphic_call_context> GTY((skip)) known_contexts; |
8aab5218 MJ |
605 | /* Whether the param uses analysis and jump function computation has already |
606 | been performed. */ | |
607 | unsigned analysis_done : 1; | |
310bc633 | 608 | /* Whether the function is enqueued in ipa-cp propagation stack. */ |
448f65db | 609 | unsigned node_enqueued : 1; |
310bc633 MJ |
610 | /* Whether we should create a specialized version based on values that are |
611 | known to be constant in all contexts. */ | |
eb20b778 MJ |
612 | unsigned do_clone_for_all_contexts : 1; |
613 | /* Set if this is an IPA-CP clone for all contexts. */ | |
614 | unsigned is_all_contexts_clone : 1; | |
310bc633 MJ |
615 | /* Node has been completely replaced by clones and will be removed after |
616 | ipa-cp is finished. */ | |
617 | unsigned node_dead : 1; | |
af21714c MJ |
618 | /* Node is involved in a recursion, potentionally indirect. */ |
619 | unsigned node_within_scc : 1; | |
9b14fc33 FX |
620 | /* Node contains only direct recursion. */ |
621 | unsigned node_is_self_scc : 1; | |
af21714c MJ |
622 | /* Node is calling a private function called only once. */ |
623 | unsigned node_calling_single_call : 1; | |
7e729474 ML |
624 | /* False when there is something makes versioning impossible. */ |
625 | unsigned versionable : 1; | |
518dc859 RL |
626 | }; |
627 | ||
e806796d ML |
628 | inline |
629 | ipa_node_params::ipa_node_params () | |
630 | : descriptors (NULL), lattices (NULL), ipcp_orig_node (NULL), | |
631 | known_csts (vNULL), known_contexts (vNULL), analysis_done (0), | |
632 | node_enqueued (0), do_clone_for_all_contexts (0), is_all_contexts_clone (0), | |
a2ae4e9a JH |
633 | node_dead (0), node_within_scc (0), node_is_self_scc (0), |
634 | node_calling_single_call (0), versionable (0) | |
e806796d ML |
635 | { |
636 | } | |
637 | ||
638 | inline | |
639 | ipa_node_params::~ipa_node_params () | |
640 | { | |
641 | free (lattices); | |
7ee0681e | 642 | vec_free (descriptors); |
e806796d ML |
643 | known_csts.release (); |
644 | known_contexts.release (); | |
645 | } | |
646 | ||
ff302741 PB |
647 | /* Intermediate information that we get from alias analysis about a particular |
648 | parameter in a particular basic_block. When a parameter or the memory it | |
56b40062 MJ |
649 | references is marked modified, we use that information in all dominated |
650 | blocks without consulting alias analysis oracle. */ | |
ff302741 | 651 | |
56b40062 | 652 | struct ipa_param_aa_status |
ff302741 PB |
653 | { |
654 | /* Set when this structure contains meaningful information. If not, the | |
655 | structure describing a dominating BB should be used instead. */ | |
656 | bool valid; | |
657 | ||
658 | /* Whether we have seen something which might have modified the data in | |
659 | question. PARM is for the parameter itself, REF is for data it points to | |
660 | but using the alias type of individual accesses and PT is the same thing | |
661 | but for computing aggregate pass-through functions using a very inclusive | |
662 | ao_ref. */ | |
663 | bool parm_modified, ref_modified, pt_modified; | |
664 | }; | |
665 | ||
666 | /* Information related to a given BB that used only when looking at function | |
667 | body. */ | |
668 | ||
669 | struct ipa_bb_info | |
670 | { | |
671 | /* Call graph edges going out of this BB. */ | |
672 | vec<cgraph_edge *> cg_edges; | |
673 | /* Alias analysis statuses of each formal parameter at this bb. */ | |
56b40062 | 674 | vec<ipa_param_aa_status> param_aa_statuses; |
ff302741 PB |
675 | }; |
676 | ||
677 | /* Structure with global information that is only used when looking at function | |
678 | body. */ | |
679 | ||
56b40062 | 680 | struct ipa_func_body_info |
ff302741 PB |
681 | { |
682 | /* The node that is being analyzed. */ | |
683 | cgraph_node *node; | |
684 | ||
685 | /* Its info. */ | |
99b1c316 | 686 | class ipa_node_params *info; |
ff302741 PB |
687 | |
688 | /* Information about individual BBs. */ | |
689 | vec<ipa_bb_info> bb_infos; | |
690 | ||
691 | /* Number of parameters. */ | |
692 | int param_count; | |
693 | ||
c628d1c3 MJ |
694 | /* Number of statements we are still allowed to walked by when analyzing this |
695 | function. */ | |
696 | unsigned int aa_walk_budget; | |
ff302741 PB |
697 | }; |
698 | ||
dcd416e3 MJ |
699 | /* ipa_node_params access functions. Please use these to access fields that |
700 | are or will be shared among various passes. */ | |
701 | ||
dcd416e3 | 702 | /* Return the number of formal parameters. */ |
be95e2b9 | 703 | |
dcd416e3 | 704 | static inline int |
99b1c316 | 705 | ipa_get_param_count (class ipa_node_params *info) |
dcd416e3 | 706 | { |
f65f1ae3 | 707 | return vec_safe_length (info->descriptors); |
dcd416e3 MJ |
708 | } |
709 | ||
5bc4cb04 MJ |
710 | /* Return the parameter declaration in DESCRIPTORS at index I and assert it is |
711 | indeed a PARM_DECL. */ | |
712 | ||
713 | static inline tree | |
714 | ipa_get_param (const vec<ipa_param_descriptor, va_gc> &descriptors, int i) | |
715 | { | |
716 | tree t = descriptors[i].decl_or_type; | |
717 | gcc_checking_assert (TREE_CODE (t) == PARM_DECL); | |
718 | return t; | |
719 | } | |
720 | ||
f8e2a1ed MJ |
721 | /* Return the declaration of Ith formal parameter of the function corresponding |
722 | to INFO. Note there is no setter function as this array is built just once | |
209ca542 PK |
723 | using ipa_initialize_node_params. This function should not be called in |
724 | WPA. */ | |
be95e2b9 | 725 | |
dcd416e3 | 726 | static inline tree |
99b1c316 | 727 | ipa_get_param (class ipa_node_params *info, int i) |
dcd416e3 | 728 | { |
f65f1ae3 | 729 | gcc_checking_assert (info->descriptors); |
5bc4cb04 | 730 | return ipa_get_param (*info->descriptors, i); |
209ca542 PK |
731 | } |
732 | ||
733 | /* Return the type of Ith formal parameter of the function corresponding | |
734 | to INFO if it is known or NULL if not. */ | |
735 | ||
736 | static inline tree | |
99b1c316 | 737 | ipa_get_type (class ipa_node_params *info, int i) |
209ca542 | 738 | { |
e5cf5e11 PK |
739 | if (vec_safe_length (info->descriptors) <= (unsigned) i) |
740 | return NULL; | |
f65f1ae3 | 741 | tree t = (*info->descriptors)[i].decl_or_type; |
209ca542 PK |
742 | if (!t) |
743 | return NULL; | |
744 | if (TYPE_P (t)) | |
745 | return t; | |
746 | gcc_checking_assert (TREE_CODE (t) == PARM_DECL); | |
747 | return TREE_TYPE (t); | |
339f49ec JH |
748 | } |
749 | ||
0e8853ee JH |
750 | /* Return the move cost of Ith formal parameter of the function corresponding |
751 | to INFO. */ | |
752 | ||
753 | static inline int | |
99b1c316 | 754 | ipa_get_param_move_cost (class ipa_node_params *info, int i) |
0e8853ee | 755 | { |
f65f1ae3 MJ |
756 | gcc_checking_assert (info->descriptors); |
757 | return (*info->descriptors)[i].move_cost; | |
0e8853ee JH |
758 | } |
759 | ||
310bc633 MJ |
760 | /* Set the used flag corresponding to the Ith formal parameter of the function |
761 | associated with INFO to VAL. */ | |
3949c4a7 | 762 | |
310bc633 | 763 | static inline void |
99b1c316 | 764 | ipa_set_param_used (class ipa_node_params *info, int i, bool val) |
3949c4a7 | 765 | { |
f65f1ae3 MJ |
766 | gcc_checking_assert (info->descriptors); |
767 | (*info->descriptors)[i].used = val; | |
3949c4a7 MJ |
768 | } |
769 | ||
40a777e8 JH |
770 | /* Set the used_by_ipa_predicates flag corresponding to the Ith formal |
771 | parameter of the function associated with INFO to VAL. */ | |
772 | ||
773 | static inline void | |
774 | ipa_set_param_used_by_ipa_predicates (class ipa_node_params *info, int i, bool val) | |
775 | { | |
776 | gcc_checking_assert (info->descriptors); | |
777 | (*info->descriptors)[i].used_by_ipa_predicates = val; | |
778 | } | |
779 | ||
780 | /* Set the used_by_indirect_call flag corresponding to the Ith formal | |
781 | parameter of the function associated with INFO to VAL. */ | |
782 | ||
783 | static inline void | |
784 | ipa_set_param_used_by_indirect_call (class ipa_node_params *info, int i, bool val) | |
785 | { | |
786 | gcc_checking_assert (info->descriptors); | |
787 | (*info->descriptors)[i].used_by_indirect_call = val; | |
788 | } | |
789 | ||
790 | /* Set the .used_by_polymorphic_call flag corresponding to the Ith formal | |
791 | parameter of the function associated with INFO to VAL. */ | |
792 | ||
793 | static inline void | |
794 | ipa_set_param_used_by_polymorphic_call (class ipa_node_params *info, int i, bool val) | |
795 | { | |
796 | gcc_checking_assert (info->descriptors); | |
797 | (*info->descriptors)[i].used_by_polymorphic_call = val; | |
798 | } | |
799 | ||
4502fe8d MJ |
800 | /* Return how many uses described by ipa-prop a parameter has or |
801 | IPA_UNDESCRIBED_USE if there is a use that is not described by these | |
802 | structures. */ | |
803 | static inline int | |
99b1c316 | 804 | ipa_get_controlled_uses (class ipa_node_params *info, int i) |
4502fe8d | 805 | { |
f65f1ae3 MJ |
806 | /* FIXME: introducing speculation causes out of bounds access here. */ |
807 | if (vec_safe_length (info->descriptors) > (unsigned)i) | |
808 | return (*info->descriptors)[i].controlled_uses; | |
5ce97055 | 809 | return IPA_UNDESCRIBED_USE; |
4502fe8d MJ |
810 | } |
811 | ||
812 | /* Set the controlled counter of a given parameter. */ | |
813 | ||
814 | static inline void | |
99b1c316 | 815 | ipa_set_controlled_uses (class ipa_node_params *info, int i, int val) |
4502fe8d | 816 | { |
f65f1ae3 MJ |
817 | gcc_checking_assert (info->descriptors); |
818 | (*info->descriptors)[i].controlled_uses = val; | |
4502fe8d MJ |
819 | } |
820 | ||
13586172 MJ |
821 | /* Assuming a parameter does not have IPA_UNDESCRIBED_USE controlled uses, |
822 | return flag which indicates it has been dereferenced but only in a load. */ | |
823 | static inline int | |
824 | ipa_get_param_load_dereferenced (class ipa_node_params *info, int i) | |
825 | { | |
826 | gcc_assert (ipa_get_controlled_uses (info, i) != IPA_UNDESCRIBED_USE); | |
827 | return (*info->descriptors)[i].load_dereferenced; | |
828 | } | |
829 | ||
830 | /* Set the load_dereferenced flag of a given parameter. */ | |
831 | ||
832 | static inline void | |
833 | ipa_set_param_load_dereferenced (class ipa_node_params *info, int i, bool val) | |
834 | { | |
835 | gcc_checking_assert (info->descriptors); | |
836 | (*info->descriptors)[i].load_dereferenced = val; | |
837 | } | |
838 | ||
310bc633 MJ |
839 | /* Return the used flag corresponding to the Ith formal parameter of the |
840 | function associated with INFO. */ | |
3949c4a7 MJ |
841 | |
842 | static inline bool | |
99b1c316 | 843 | ipa_is_param_used (class ipa_node_params *info, int i) |
3949c4a7 | 844 | { |
f65f1ae3 MJ |
845 | gcc_checking_assert (info->descriptors); |
846 | return (*info->descriptors)[i].used; | |
3949c4a7 MJ |
847 | } |
848 | ||
40a777e8 JH |
849 | /* Return the used_by_ipa_predicates flag corresponding to the Ith formal |
850 | parameter of the function associated with INFO. */ | |
851 | ||
852 | static inline bool | |
853 | ipa_is_param_used_by_ipa_predicates (class ipa_node_params *info, int i) | |
854 | { | |
855 | gcc_checking_assert (info->descriptors); | |
856 | return (*info->descriptors)[i].used_by_ipa_predicates; | |
857 | } | |
858 | ||
859 | /* Return the used_by_indirect_call flag corresponding to the Ith formal | |
860 | parameter of the function associated with INFO. */ | |
861 | ||
862 | static inline bool | |
863 | ipa_is_param_used_by_indirect_call (class ipa_node_params *info, int i) | |
864 | { | |
865 | gcc_checking_assert (info->descriptors); | |
866 | return (*info->descriptors)[i].used_by_indirect_call; | |
867 | } | |
868 | ||
869 | /* Return the used_by_polymorphic_call flag corresponding to the Ith formal | |
870 | parameter of the function associated with INFO. */ | |
871 | ||
872 | static inline bool | |
873 | ipa_is_param_used_by_polymorphic_call (class ipa_node_params *info, int i) | |
874 | { | |
875 | gcc_checking_assert (info->descriptors); | |
876 | return (*info->descriptors)[i].used_by_polymorphic_call; | |
877 | } | |
878 | ||
04be694e MJ |
879 | /* Structure holding information for the transformation phase of IPA-CP. */ |
880 | ||
9d3e0adc | 881 | struct GTY(()) ipcp_transformation |
04be694e | 882 | { |
e0403e95 MJ |
883 | /* Known aggregate values. */ |
884 | vec<ipa_argagg_value, va_gc> *m_agg_values; | |
209ca542 | 885 | /* Known bits information. */ |
86cd0334 | 886 | vec<ipa_bits *, va_gc> *bits; |
8bc5448f KV |
887 | /* Value range information. */ |
888 | vec<ipa_vr, va_gc> *m_vr; | |
98aad294 JH |
889 | |
890 | /* Default constructor. */ | |
891 | ipcp_transformation () | |
e0403e95 | 892 | : m_agg_values (NULL), bits (NULL), m_vr (NULL) |
98aad294 JH |
893 | { } |
894 | ||
895 | /* Default destructor. */ | |
896 | ~ipcp_transformation () | |
897 | { | |
e0403e95 | 898 | vec_free (m_agg_values); |
98aad294 JH |
899 | vec_free (bits); |
900 | vec_free (m_vr); | |
901 | } | |
04be694e | 902 | }; |
2c9561b5 | 903 | |
e0403e95 MJ |
904 | inline |
905 | ipa_argagg_value_list::ipa_argagg_value_list (const ipcp_transformation *tinfo) | |
906 | : m_elts (tinfo->m_agg_values) | |
907 | {} | |
908 | ||
2c9561b5 | 909 | void ipa_set_node_agg_value_chain (struct cgraph_node *node, |
e0403e95 | 910 | vec<ipa_argagg_value, va_gc> *aggs); |
9d3e0adc | 911 | void ipcp_transformation_initialize (void); |
12e088ba | 912 | void ipcp_free_transformation_sum (void); |
2c9561b5 | 913 | |
93c594a3 MJ |
914 | /* ipa_edge_args stores information related to a callsite and particularly its |
915 | arguments. It can be accessed by the IPA_EDGE_REF macro. */ | |
6fe906a3 MJ |
916 | |
917 | class GTY((for_user)) ipa_edge_args | |
518dc859 | 918 | { |
6fe906a3 MJ |
919 | public: |
920 | ||
921 | /* Default constructor. */ | |
922 | ipa_edge_args () : jump_functions (NULL), polymorphic_call_contexts (NULL) | |
923 | {} | |
924 | ||
925 | /* Destructor. */ | |
926 | ~ipa_edge_args () | |
927 | { | |
7ee0681e JH |
928 | unsigned int i; |
929 | ipa_jump_func *jf; | |
930 | FOR_EACH_VEC_SAFE_ELT (jump_functions, i, jf) | |
931 | vec_free (jf->agg.items); | |
6fe906a3 MJ |
932 | vec_free (jump_functions); |
933 | vec_free (polymorphic_call_contexts); | |
934 | } | |
935 | ||
936 | /* Vectors of the callsite's jump function and polymorphic context | |
937 | information of each parameter. */ | |
84562394 | 938 | vec<ipa_jump_func, va_gc> *jump_functions; |
5ce97055 | 939 | vec<ipa_polymorphic_call_context, va_gc> *polymorphic_call_contexts; |
84562394 | 940 | }; |
518dc859 | 941 | |
dcd416e3 MJ |
942 | /* ipa_edge_args access functions. Please use these to access fields that |
943 | are or will be shared among various passes. */ | |
944 | ||
dcd416e3 | 945 | /* Return the number of actual arguments. */ |
be95e2b9 | 946 | |
dcd416e3 | 947 | static inline int |
99b1c316 | 948 | ipa_get_cs_argument_count (class ipa_edge_args *args) |
dcd416e3 | 949 | { |
9771b263 | 950 | return vec_safe_length (args->jump_functions); |
dcd416e3 MJ |
951 | } |
952 | ||
953 | /* Returns a pointer to the jump function for the ith argument. Please note | |
954 | there is no setter function as jump functions are all set up in | |
955 | ipa_compute_jump_functions. */ | |
be95e2b9 | 956 | |
dcd416e3 | 957 | static inline struct ipa_jump_func * |
99b1c316 | 958 | ipa_get_ith_jump_func (class ipa_edge_args *args, int i) |
dcd416e3 | 959 | { |
9771b263 | 960 | return &(*args->jump_functions)[i]; |
dcd416e3 MJ |
961 | } |
962 | ||
5ce97055 JH |
963 | /* Returns a pointer to the polymorphic call context for the ith argument. |
964 | NULL if contexts are not computed. */ | |
99b1c316 MS |
965 | static inline class ipa_polymorphic_call_context * |
966 | ipa_get_ith_polymorhic_call_context (class ipa_edge_args *args, int i) | |
5ce97055 JH |
967 | { |
968 | if (!args->polymorphic_call_contexts) | |
969 | return NULL; | |
970 | return &(*args->polymorphic_call_contexts)[i]; | |
971 | } | |
972 | ||
9a1e784a | 973 | /* Function summary for ipa_node_params. */ |
f65f1ae3 | 974 | class GTY((user)) ipa_node_params_t: public function_summary <ipa_node_params *> |
dd912cb8 ML |
975 | { |
976 | public: | |
f65f1ae3 | 977 | ipa_node_params_t (symbol_table *table, bool ggc): |
40e67ab8 JH |
978 | function_summary<ipa_node_params *> (table, ggc) |
979 | { | |
980 | disable_insertion_hook (); | |
981 | } | |
771578a0 | 982 | |
dd912cb8 | 983 | /* Hook that is called by summary when a node is duplicated. */ |
f31ba116 DM |
984 | void duplicate (cgraph_node *node, |
985 | cgraph_node *node2, | |
986 | ipa_node_params *data, | |
987 | ipa_node_params *data2) final override; | |
dd912cb8 ML |
988 | }; |
989 | ||
6fe906a3 MJ |
990 | /* Summary to manange ipa_edge_args structures. */ |
991 | ||
992 | class GTY((user)) ipa_edge_args_sum_t : public call_summary <ipa_edge_args *> | |
993 | { | |
994 | public: | |
995 | ipa_edge_args_sum_t (symbol_table *table, bool ggc) | |
996 | : call_summary<ipa_edge_args *> (table, ggc) { } | |
997 | ||
a33c028e JH |
998 | void remove (cgraph_edge *edge) |
999 | { | |
1000 | call_summary <ipa_edge_args *>::remove (edge); | |
1001 | } | |
1002 | ||
f658ad30 | 1003 | /* Hook that is called by summary when an edge is removed. */ |
f31ba116 | 1004 | void remove (cgraph_edge *cs, ipa_edge_args *args) final override; |
6fe906a3 | 1005 | /* Hook that is called by summary when an edge is duplicated. */ |
f31ba116 DM |
1006 | void duplicate (cgraph_edge *src, |
1007 | cgraph_edge *dst, | |
1008 | ipa_edge_args *old_args, | |
1009 | ipa_edge_args *new_args) final override; | |
6fe906a3 MJ |
1010 | }; |
1011 | ||
dd912cb8 | 1012 | /* Function summary where the parameter infos are actually stored. */ |
f65f1ae3 | 1013 | extern GTY(()) ipa_node_params_t * ipa_node_params_sum; |
6fe906a3 MJ |
1014 | /* Call summary to store information about edges such as jump functions. */ |
1015 | extern GTY(()) ipa_edge_args_sum_t *ipa_edge_args_sum; | |
f65f1ae3 | 1016 | |
9d3e0adc ML |
1017 | /* Function summary for IPA-CP transformation. */ |
1018 | class ipcp_transformation_t | |
1019 | : public function_summary<ipcp_transformation *> | |
1020 | { | |
1021 | public: | |
1022 | ipcp_transformation_t (symbol_table *table, bool ggc): | |
1023 | function_summary<ipcp_transformation *> (table, ggc) {} | |
1024 | ||
1025 | ~ipcp_transformation_t () {} | |
1026 | ||
1027 | static ipcp_transformation_t *create_ggc (symbol_table *symtab) | |
1028 | { | |
1029 | ipcp_transformation_t *summary | |
78cd68c0 | 1030 | = new (ggc_alloc_no_dtor <ipcp_transformation_t> ()) |
9d3e0adc ML |
1031 | ipcp_transformation_t (symtab, true); |
1032 | return summary; | |
1033 | } | |
98aad294 | 1034 | /* Hook that is called by summary when a node is duplicated. */ |
f31ba116 DM |
1035 | void duplicate (cgraph_node *node, |
1036 | cgraph_node *node2, | |
1037 | ipcp_transformation *data, | |
1038 | ipcp_transformation *data2) final override; | |
9d3e0adc ML |
1039 | }; |
1040 | ||
1041 | /* Function summary where the IPA CP transformations are actually stored. */ | |
1042 | extern GTY(()) function_summary <ipcp_transformation *> *ipcp_transformation_sum; | |
f65f1ae3 | 1043 | |
771578a0 MJ |
1044 | /* Creating and freeing ipa_node_params and ipa_edge_args. */ |
1045 | void ipa_create_all_node_params (void); | |
1046 | void ipa_create_all_edge_args (void); | |
86cd0334 | 1047 | void ipa_check_create_edge_args (void); |
771578a0 MJ |
1048 | void ipa_free_all_node_params (void); |
1049 | void ipa_free_all_edge_args (void); | |
e33c6cd6 MJ |
1050 | void ipa_free_all_structures_after_ipa_cp (void); |
1051 | void ipa_free_all_structures_after_iinln (void); | |
dd912cb8 | 1052 | |
771578a0 | 1053 | void ipa_register_cgraph_hooks (void); |
fd29c024 | 1054 | int count_formal_params (tree fndecl); |
771578a0 MJ |
1055 | |
1056 | /* This function ensures the array of node param infos is big enough to | |
be95e2b9 MJ |
1057 | accommodate a structure for all nodes and reallocates it if not. */ |
1058 | ||
771578a0 MJ |
1059 | static inline void |
1060 | ipa_check_create_node_params (void) | |
1061 | { | |
dd912cb8 | 1062 | if (!ipa_node_params_sum) |
f65f1ae3 | 1063 | ipa_node_params_sum |
78cd68c0 | 1064 | = (new (ggc_alloc_no_dtor <ipa_node_params_t> ()) |
f65f1ae3 | 1065 | ipa_node_params_t (symtab, true)); |
771578a0 MJ |
1066 | } |
1067 | ||
6fe906a3 MJ |
1068 | /* Returns true if edge summary contains a record for EDGE. The main purpose |
1069 | of this function is that debug dumping function can check info availability | |
1070 | without causing allocations. */ | |
be95e2b9 | 1071 | |
0eae6bab MJ |
1072 | static inline bool |
1073 | ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge) | |
1074 | { | |
6fe906a3 | 1075 | return ipa_edge_args_sum->exists (edge); |
0eae6bab MJ |
1076 | } |
1077 | ||
9d3e0adc | 1078 | static inline ipcp_transformation * |
04be694e MJ |
1079 | ipcp_get_transformation_summary (cgraph_node *node) |
1080 | { | |
9d3e0adc | 1081 | if (ipcp_transformation_sum == NULL) |
04be694e | 1082 | return NULL; |
9d3e0adc ML |
1083 | |
1084 | return ipcp_transformation_sum->get (node); | |
04be694e MJ |
1085 | } |
1086 | ||
f8e2a1ed MJ |
1087 | /* Function formal parameters related computations. */ |
1088 | void ipa_initialize_node_params (struct cgraph_node *node); | |
f8e2a1ed | 1089 | bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs, |
d52f5295 | 1090 | vec<cgraph_edge *> *new_edges); |
518dc859 | 1091 | |
9d5af1db MJ |
1092 | /* Indirect edge processing and target discovery. */ |
1093 | tree ipa_get_indirect_edge_target (struct cgraph_edge *ie, | |
1094 | ipa_call_arg_values *avals, | |
1095 | bool *speculative); | |
5ce97055 JH |
1096 | struct cgraph_edge *ipa_make_edge_direct_to_target (struct cgraph_edge *, tree, |
1097 | bool speculative = false); | |
72972c22 | 1098 | tree ipa_impossible_devirt_target (struct cgraph_edge *, tree); |
86cd0334 MJ |
1099 | ipa_bits *ipa_get_ipa_bits_for_value (const widest_int &value, |
1100 | const widest_int &mask); | |
1101 | ||
3949c4a7 | 1102 | |
310bc633 MJ |
1103 | /* Functions related to both. */ |
1104 | void ipa_analyze_node (struct cgraph_node *); | |
3949c4a7 | 1105 | |
8b7773a4 | 1106 | /* Aggregate jump function related functions. */ |
656b2338 MJ |
1107 | tree ipa_find_agg_cst_from_init (tree scalar, HOST_WIDE_INT offset, |
1108 | bool by_ref); | |
91bb9f80 | 1109 | bool ipa_load_from_parm_agg (struct ipa_func_body_info *fbi, |
f65f1ae3 | 1110 | vec<ipa_param_descriptor, va_gc> *descriptors, |
91bb9f80 | 1111 | gimple *stmt, tree op, int *index_p, |
86003645 | 1112 | HOST_WIDE_INT *offset_p, poly_int64 *size_p, |
91bb9f80 | 1113 | bool *by_ref, bool *guaranteed_unmodified = NULL); |
8b7773a4 | 1114 | |
518dc859 | 1115 | /* Debugging interface. */ |
ca30a539 JH |
1116 | void ipa_print_node_params (FILE *, struct cgraph_node *node); |
1117 | void ipa_print_all_params (FILE *); | |
3e293154 MJ |
1118 | void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node); |
1119 | void ipa_print_all_jump_functions (FILE * f); | |
310bc633 MJ |
1120 | void ipcp_verify_propagated_values (void); |
1121 | ||
2651e637 ML |
1122 | template <typename value> |
1123 | class ipcp_value; | |
1124 | ||
fb0b2914 ML |
1125 | extern object_allocator<ipcp_value<tree> > ipcp_cst_values_pool; |
1126 | extern object_allocator<ipcp_value<ipa_polymorphic_call_context> > | |
2651e637 ML |
1127 | ipcp_poly_ctx_values_pool; |
1128 | ||
1129 | template <typename valtype> | |
99b1c316 | 1130 | struct ipcp_value_source; |
2651e637 | 1131 | |
fb0b2914 | 1132 | extern object_allocator<ipcp_value_source<tree> > ipcp_sources_pool; |
2651e637 | 1133 | |
99b1c316 | 1134 | struct ipcp_agg_lattice; |
2651e637 | 1135 | |
fb0b2914 | 1136 | extern object_allocator<ipcp_agg_lattice> ipcp_agg_lattice_pool; |
518dc859 | 1137 | |
f27c1867 | 1138 | void ipa_prop_write_jump_functions (void); |
fb3f88cc | 1139 | void ipa_prop_read_jump_functions (void); |
04be694e MJ |
1140 | void ipcp_write_transformation_summaries (void); |
1141 | void ipcp_read_transformation_summaries (void); | |
99b1c316 MS |
1142 | int ipa_get_param_decl_index (class ipa_node_params *, tree); |
1143 | tree ipa_value_from_jfunc (class ipa_node_params *info, | |
e5cf5e11 | 1144 | struct ipa_jump_func *jfunc, tree type); |
656b2338 MJ |
1145 | tree ipa_agg_value_from_jfunc (ipa_node_params *info, cgraph_node *node, |
1146 | const ipa_agg_jf_item *item); | |
2c9561b5 | 1147 | unsigned int ipcp_transform_function (struct cgraph_node *node); |
44210a96 MJ |
1148 | ipa_polymorphic_call_context ipa_context_from_jfunc (ipa_node_params *, |
1149 | cgraph_edge *, | |
1150 | int, | |
1151 | ipa_jump_func *); | |
68718e8e JH |
1152 | value_range ipa_value_range_from_jfunc (ipa_node_params *, cgraph_edge *, |
1153 | ipa_jump_func *, tree); | |
656b2338 MJ |
1154 | void ipa_push_agg_values_from_jfunc (ipa_node_params *info, cgraph_node *node, |
1155 | ipa_agg_jump_function *agg_jfunc, | |
1156 | unsigned dst_index, | |
1157 | vec<ipa_argagg_value> *res); | |
99b1c316 | 1158 | void ipa_dump_param (FILE *, class ipa_node_params *info, int i); |
c3431191 | 1159 | void ipa_release_body_info (struct ipa_func_body_info *); |
5d5f1e95 | 1160 | tree ipa_get_callee_param_type (struct cgraph_edge *e, int i); |
c7ac9a0c | 1161 | bool ipcp_get_parm_bits (tree, tree *, widest_int *); |
c7b6a758 JH |
1162 | bool unadjusted_ptr_and_unit_offset (tree op, tree *ret, |
1163 | poly_int64 *offset_ret); | |
fb3f88cc | 1164 | |
e53b6e56 | 1165 | /* From tree-sra.cc: */ |
f7ed3195 | 1166 | tree build_ref_for_offset (location_t, tree, poly_int64, bool, tree, |
e4b5cace | 1167 | gimple_stmt_iterator *, bool); |
3f84bf08 | 1168 | |
e53b6e56 | 1169 | /* In ipa-cp.cc */ |
d5148d4f | 1170 | void ipa_cp_cc_finalize (void); |
3edf64aa | 1171 | |
518dc859 | 1172 | #endif /* IPA_PROP_H */ |