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d7f09764 DN |
1 | /* Data structures and declarations used for reading and writing |
2 | GIMPLE to a file stream. | |
3 | ||
a945c346 | 4 | Copyright (C) 2009-2024 Free Software Foundation, Inc. |
d7f09764 DN |
5 | Contributed by Doug Kwan <dougkwan@google.com> |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 3, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #ifndef GCC_LTO_STREAMER_H | |
24 | #define GCC_LTO_STREAMER_H | |
25 | ||
26 | #include "plugin-api.h" | |
db0bf14f | 27 | #include "gcov-io.h" |
f0efc7aa | 28 | #include "diagnostic.h" |
e3a682f4 | 29 | #include "version.h" |
47c79d56 | 30 | |
d7f09764 DN |
31 | /* The encoding for a function consists of the following sections: |
32 | ||
33 | 1) The header. | |
34 | 2) FIELD_DECLS. | |
35 | 3) FUNCTION_DECLS. | |
36 | 4) global VAR_DECLS. | |
37 | 5) type_decls | |
38 | 6) types. | |
39 | 7) Names for the labels that have names | |
40 | 8) The SSA names. | |
41 | 9) The control flow graph. | |
42 | 10-11)Gimple for local decls. | |
43 | 12) Gimple for the function. | |
44 | 13) Strings. | |
45 | ||
46 | 1) THE HEADER. | |
47 | 2-6) THE GLOBAL DECLS AND TYPES. | |
48 | ||
49 | The global decls and types are encoded in the same way. For each | |
50 | entry, there is word with the offset within the section to the | |
51 | entry. | |
52 | ||
b8698a0f | 53 | 7) THE LABEL NAMES. |
d7f09764 DN |
54 | |
55 | Since most labels do not have names, this section my be of zero | |
56 | length. It consists of an array of string table references, one | |
57 | per label. In the lto code, the labels are given either | |
58 | positive or negative indexes. the positive ones have names and | |
59 | the negative ones do not. The positive index can be used to | |
60 | find the name in this array. | |
61 | ||
b8698a0f | 62 | 9) THE CFG. |
d7f09764 DN |
63 | |
64 | 10) Index into the local decls. Since local decls can have local | |
65 | decls inside them, they must be read in randomly in order to | |
b8698a0f | 66 | properly restore them. |
d7f09764 DN |
67 | |
68 | 11-12) GIMPLE FOR THE LOCAL DECLS AND THE FUNCTION BODY. | |
69 | ||
70 | The gimple consists of a set of records. | |
71 | ||
72 | THE FUNCTION | |
b8698a0f | 73 | |
d7f09764 DN |
74 | At the top level of (8) is the function. It consists of five |
75 | pieces: | |
76 | ||
77 | LTO_function - The tag. | |
78 | eh tree - This is all of the exception handling regions | |
79 | put out in a post order traversial of the | |
80 | tree. Siblings are output as lists terminated | |
81 | by a 0. The set of fields matches the fields | |
e53b6e56 | 82 | defined in except.cc. |
d7f09764 DN |
83 | |
84 | last_basic_block - in uleb128 form. | |
85 | ||
86 | basic blocks - This is the set of basic blocks. | |
87 | ||
88 | zero - The termination of the basic blocks. | |
89 | ||
90 | BASIC BLOCKS | |
91 | ||
92 | There are two forms of basic blocks depending on if they are | |
93 | empty or not. | |
94 | ||
95 | The basic block consists of: | |
96 | ||
97 | LTO_bb1 or LTO_bb0 - The tag. | |
98 | ||
99 | bb->index - the index in uleb128 form. | |
100 | ||
101 | #succs - The number of successors un uleb128 form. | |
102 | ||
103 | the successors - For each edge, a pair. The first of the | |
104 | pair is the index of the successor in | |
105 | uleb128 form and the second are the flags in | |
106 | uleb128 form. | |
107 | ||
108 | the statements - A gimple tree, as described above. | |
109 | These are only present for LTO_BB1. | |
110 | Following each statement is an optional | |
111 | exception handling record LTO_eh_region | |
112 | which contains the region number (for | |
113 | regions >= 0). | |
114 | ||
115 | zero - This is only present for LTO_BB1 and is used | |
116 | to terminate the statements and exception | |
117 | regions within this block. | |
118 | ||
119 | 12) STRINGS | |
120 | ||
121 | String are represented in the table as pairs, a length in ULEB128 | |
122 | form followed by the data for the string. */ | |
123 | ||
e3a682f4 | 124 | #define LTO_major_version GCC_major_version |
15b25b24 | 125 | #define LTO_minor_version 0 |
d7f09764 DN |
126 | |
127 | typedef unsigned char lto_decl_flags_t; | |
128 | ||
a746f952 JH |
129 | /* Stream additional data to LTO object files to make it easier to debug |
130 | streaming code. This changes object files. */ | |
131 | static const bool streamer_debugging = false; | |
d7f09764 | 132 | |
d7f09764 DN |
133 | /* Tags representing the various IL objects written to the bytecode file |
134 | (GIMPLE statements, basic blocks, EH regions, tree nodes, etc). | |
135 | ||
136 | NOTE, when adding new LTO tags, also update lto_tag_name. */ | |
b8698a0f | 137 | enum LTO_tags |
d7f09764 DN |
138 | { |
139 | LTO_null = 0, | |
140 | ||
dda71670 | 141 | /* Reference to previously-streamed node. */ |
15d16c8a RB |
142 | LTO_tree_pickle_reference, |
143 | ||
dda71670 JH |
144 | /* References to indexable tree nodes. These objects are stored in |
145 | tables that are written separately from the function bodies | |
146 | and variable constructors that reference them. This way they can be | |
147 | instantiated even when the referencing functions aren't (e.g., during WPA) | |
148 | and it also allows functions to be copied from one file to another without | |
149 | having to unpickle the body first (the references are location | |
150 | independent). */ | |
151 | LTO_global_stream_ref, | |
d7f09764 | 152 | |
dda71670 | 153 | LTO_ssa_name_ref, |
d7f09764 | 154 | |
dda71670 JH |
155 | /* Special for global streamer. A blob of unnamed tree nodes. */ |
156 | LTO_tree_scc, | |
d7f09764 | 157 | |
dda71670 JH |
158 | /* Sequence of trees. */ |
159 | LTO_trees, | |
160 | ||
161 | /* Shared INTEGER_CST node. */ | |
162 | LTO_integer_cst, | |
163 | ||
164 | /* Tags of trees are encoded as | |
165 | LTO_first_tree_tag + TREE_CODE. */ | |
166 | LTO_first_tree_tag, | |
167 | /* Tags of gimple typles are encoded as | |
168 | LTO_first_gimple_tag + gimple_code. */ | |
169 | LTO_first_gimple_tag = LTO_first_tree_tag + MAX_TREE_CODES, | |
170 | ||
171 | /* Entry and exit basic blocks. */ | |
172 | LTO_bb0 = LTO_first_gimple_tag + LAST_AND_UNUSED_GIMPLE_CODE, | |
d7f09764 DN |
173 | LTO_bb1, |
174 | ||
175 | /* EH region holding the previous statement. */ | |
176 | LTO_eh_region, | |
177 | ||
d7f09764 DN |
178 | /* Function body. */ |
179 | LTO_function, | |
180 | ||
181 | /* EH table. */ | |
182 | LTO_eh_table, | |
183 | ||
184 | /* EH region types. These mirror enum eh_region_type. */ | |
185 | LTO_ert_cleanup, | |
186 | LTO_ert_try, | |
187 | LTO_ert_allowed_exceptions, | |
188 | LTO_ert_must_not_throw, | |
189 | ||
190 | /* EH landing pad. */ | |
191 | LTO_eh_landing_pad, | |
192 | ||
193 | /* EH try/catch node. */ | |
194 | LTO_eh_catch, | |
195 | ||
d7f09764 DN |
196 | /* This tag must always be last. */ |
197 | LTO_NUM_TAGS | |
198 | }; | |
199 | ||
200 | ||
201 | /* Set of section types that are in an LTO file. This list will grow | |
202 | as the number of IPA passes grows since each IPA pass will need its | |
203 | own section type to store its summary information. | |
204 | ||
205 | When adding a new section type, you must also extend the | |
e53b6e56 | 206 | LTO_SECTION_NAME array in lto-section-in.cc. */ |
d7f09764 DN |
207 | enum lto_section_type |
208 | { | |
209 | LTO_section_decls = 0, | |
210 | LTO_section_function_body, | |
211 | LTO_section_static_initializer, | |
ab96cc5b | 212 | LTO_section_symtab, |
c8429c2a | 213 | LTO_section_symtab_extension, |
369451ec | 214 | LTO_section_refs, |
49f836ba | 215 | LTO_section_asm, |
fb3f88cc | 216 | LTO_section_jump_functions, |
d7f09764 DN |
217 | LTO_section_ipa_pure_const, |
218 | LTO_section_ipa_reference, | |
0208f7da | 219 | LTO_section_ipa_profile, |
ab96cc5b | 220 | LTO_section_symtab_nodes, |
d7f09764 | 221 | LTO_section_opts, |
922f15c2 | 222 | LTO_section_cgraph_opt_sum, |
0bceb671 | 223 | LTO_section_ipa_fn_summary, |
2c9561b5 | 224 | LTO_section_ipcp_transform, |
b84d4347 | 225 | LTO_section_ipa_icf, |
ec6fe917 | 226 | LTO_section_offload_table, |
db847fa8 | 227 | LTO_section_mode_table, |
88614dfa | 228 | LTO_section_lto, |
ff6686d2 | 229 | LTO_section_ipa_sra, |
3fb68f2e | 230 | LTO_section_odr_types, |
d119f34c | 231 | LTO_section_ipa_modref, |
d7f09764 DN |
232 | LTO_N_SECTION_TYPES /* Must be last. */ |
233 | }; | |
234 | ||
235 | /* Indices to the various function, type and symbol streams. */ | |
84562394 | 236 | enum lto_decl_stream_e_t |
d7f09764 | 237 | { |
ff7da2b5 | 238 | LTO_DECL_STREAM = 0, /* Must be first. */ |
d7f09764 | 239 | LTO_N_DECL_STREAMS |
84562394 | 240 | }; |
d7f09764 DN |
241 | |
242 | typedef enum ld_plugin_symbol_resolution ld_plugin_symbol_resolution_t; | |
d7f09764 | 243 | |
d7f09764 DN |
244 | /* Return a char pointer to the start of a data stream for an lto pass |
245 | or function. The first parameter is the file data that contains | |
246 | the information. The second parameter is the type of information | |
247 | to be obtained. The third parameter is the name of the function | |
b8698a0f | 248 | and is only used when finding a function body; otherwise it is |
d7f09764 | 249 | NULL. The fourth parameter is the length of the data returned. */ |
b8698a0f | 250 | typedef const char* (lto_get_section_data_f) (struct lto_file_decl_data *, |
d7f09764 | 251 | enum lto_section_type, |
b8698a0f | 252 | const char *, |
3c56d8d8 | 253 | int, |
d7f09764 DN |
254 | size_t *); |
255 | ||
256 | /* Return the data found from the above call. The first three | |
257 | parameters are the same as above. The fourth parameter is the data | |
073a8998 | 258 | itself and the fifth is the length of the data. */ |
b8698a0f | 259 | typedef void (lto_free_section_data_f) (struct lto_file_decl_data *, |
d7f09764 DN |
260 | enum lto_section_type, |
261 | const char *, | |
262 | const char *, | |
263 | size_t); | |
264 | ||
eaeec5ec | 265 | /* The location cache holds expanded locations for streamed in trees. |
e4112065 | 266 | This is done to reduce memory usage of libcpp linemap that strongly prefers |
3536ff2d | 267 | locations to be inserted in the source order. */ |
eaeec5ec JH |
268 | |
269 | class lto_location_cache | |
270 | { | |
271 | public: | |
272 | /* Apply all changes in location cache. Add locations into linemap and patch | |
273 | trees. */ | |
274 | bool apply_location_cache (); | |
275 | /* Tree merging did not suceed; mark all changes in the cache as accepted. */ | |
276 | void accept_location_cache (); | |
277 | /* Tree merging did suceed; throw away recent changes. */ | |
278 | void revert_location_cache (); | |
279 | void input_location (location_t *loc, struct bitpack_d *bp, | |
99b1c316 | 280 | class data_in *data_in); |
3536ff2d JJ |
281 | void input_location_and_block (location_t *loc, struct bitpack_d *bp, |
282 | class lto_input_block *ib, | |
283 | class data_in *data_in); | |
eaeec5ec JH |
284 | lto_location_cache () |
285 | : loc_cache (), accepted_length (0), current_file (NULL), current_line (0), | |
3536ff2d JJ |
286 | current_col (0), current_sysp (false), current_loc (UNKNOWN_LOCATION), |
287 | current_block (NULL_TREE) | |
eaeec5ec JH |
288 | { |
289 | gcc_assert (!current_cache); | |
290 | current_cache = this; | |
291 | } | |
292 | ~lto_location_cache () | |
293 | { | |
294 | apply_location_cache (); | |
295 | gcc_assert (current_cache == this); | |
296 | current_cache = NULL; | |
297 | } | |
298 | ||
299 | /* There can be at most one instance of location cache (combining multiple | |
300 | would bring it out of sync with libcpp linemap); point to current | |
301 | one. */ | |
302 | static lto_location_cache *current_cache; | |
303 | ||
304 | private: | |
305 | static int cmp_loc (const void *pa, const void *pb); | |
306 | ||
307 | struct cached_location | |
308 | { | |
309 | const char *file; | |
310 | location_t *loc; | |
311 | int line, col; | |
6c1bc27c | 312 | bool sysp; |
3536ff2d | 313 | tree block; |
f1adf45b | 314 | unsigned discr; |
eaeec5ec JH |
315 | }; |
316 | ||
317 | /* The location cache. */ | |
318 | ||
50cfd44e | 319 | auto_vec<cached_location> loc_cache; |
eaeec5ec JH |
320 | |
321 | /* Accepted entries are ones used by trees that are known to be not unified | |
322 | by tree merging. */ | |
323 | ||
324 | int accepted_length; | |
325 | ||
326 | /* Bookkeeping to remember state in between calls to lto_apply_location_cache | |
327 | When streaming gimple, the location cache is not used and thus | |
328 | lto_apply_location_cache happens per location basis. It is then | |
329 | useful to avoid redundant calls of linemap API. */ | |
330 | ||
331 | const char *current_file; | |
332 | int current_line; | |
333 | int current_col; | |
6c1bc27c | 334 | bool current_sysp; |
eaeec5ec | 335 | location_t current_loc; |
3536ff2d | 336 | tree current_block; |
f1adf45b | 337 | unsigned current_discr; |
eaeec5ec JH |
338 | }; |
339 | ||
d7f09764 | 340 | /* Structure used as buffer for reading an LTO file. */ |
207c68cd | 341 | class lto_input_block |
d7f09764 | 342 | { |
207c68cd RB |
343 | public: |
344 | /* Special constructor for the string table, it abuses this to | |
345 | do random access but use the uhwi decoder. */ | |
db847fa8 | 346 | lto_input_block (const char *data_, unsigned int p_, unsigned int len_, |
d7faf7a5 TS |
347 | const lto_file_decl_data *file_data_) |
348 | : data (data_), file_data (file_data_), p (p_), len (len_) {} | |
db847fa8 | 349 | lto_input_block (const char *data_, unsigned int len_, |
d7faf7a5 TS |
350 | const lto_file_decl_data *file_data_) |
351 | : data (data_), file_data (file_data_), p (0), len (len_) {} | |
207c68cd | 352 | |
d7f09764 | 353 | const char *data; |
d7faf7a5 | 354 | const lto_file_decl_data *file_data; |
d7f09764 DN |
355 | unsigned int p; |
356 | unsigned int len; | |
357 | }; | |
358 | ||
88614dfa | 359 | /* Compression algorithm used for compression of LTO bytecode. */ |
d7f09764 | 360 | |
88614dfa ML |
361 | enum lto_compression |
362 | { | |
363 | ZLIB, | |
364 | ZSTD | |
365 | }; | |
366 | ||
367 | /* Structure that represents LTO ELF section with information | |
368 | about the format. */ | |
369 | ||
370 | struct lto_section | |
d7f09764 DN |
371 | { |
372 | int16_t major_version; | |
373 | int16_t minor_version; | |
d1caf05a | 374 | unsigned char slim_object; |
84110515 | 375 | unsigned char _padding; |
d1caf05a ML |
376 | |
377 | /* Flags is a private field that is not defined publicly. */ | |
378 | uint16_t flags; | |
379 | ||
380 | /* Set compression to FLAGS. */ | |
381 | inline void set_compression (lto_compression c) | |
382 | { | |
383 | flags = c; | |
384 | } | |
385 | ||
386 | /* Get compression from FLAGS. */ | |
387 | inline lto_compression get_compression () | |
388 | { | |
389 | return (lto_compression) flags; | |
390 | } | |
d7f09764 DN |
391 | }; |
392 | ||
88614dfa ML |
393 | STATIC_ASSERT (sizeof (lto_section) == 8); |
394 | ||
207c68cd RB |
395 | /* The is the first part of the record in an LTO file for many of the |
396 | IPA passes. */ | |
88614dfa | 397 | struct lto_simple_header |
d7f09764 | 398 | { |
207c68cd RB |
399 | /* Size of main gimple body of function. */ |
400 | int32_t main_size; | |
401 | }; | |
d7f09764 | 402 | |
207c68cd RB |
403 | struct lto_simple_header_with_strings : lto_simple_header |
404 | { | |
d7f09764 DN |
405 | /* Size of the string table. */ |
406 | int32_t string_size; | |
407 | }; | |
408 | ||
207c68cd RB |
409 | /* The header for a function body. */ |
410 | struct lto_function_header : lto_simple_header_with_strings | |
411 | { | |
412 | /* Size of the cfg. */ | |
413 | int32_t cfg_size; | |
414 | }; | |
415 | ||
d7f09764 DN |
416 | |
417 | /* Structure describing a symbol section. */ | |
207c68cd | 418 | struct lto_decl_header : lto_simple_header_with_strings |
d7f09764 | 419 | { |
d7f09764 DN |
420 | /* Size of region for decl state. */ |
421 | int32_t decl_state_size; | |
422 | ||
423 | /* Number of nodes in globals stream. */ | |
424 | int32_t num_nodes; | |
49f836ba JB |
425 | }; |
426 | ||
427 | ||
d7f09764 DN |
428 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
429 | struct lto_stats_d | |
430 | { | |
431 | unsigned HOST_WIDE_INT num_input_cgraph_nodes; | |
7b99cca4 | 432 | unsigned HOST_WIDE_INT num_output_symtab_nodes; |
d7f09764 DN |
433 | unsigned HOST_WIDE_INT num_input_files; |
434 | unsigned HOST_WIDE_INT num_output_files; | |
435 | unsigned HOST_WIDE_INT num_cgraph_partitions; | |
436 | unsigned HOST_WIDE_INT section_size[LTO_N_SECTION_TYPES]; | |
437 | unsigned HOST_WIDE_INT num_function_bodies; | |
438 | unsigned HOST_WIDE_INT num_trees[NUM_TREE_CODES]; | |
439 | unsigned HOST_WIDE_INT num_output_il_bytes; | |
440 | unsigned HOST_WIDE_INT num_compressed_il_bytes; | |
441 | unsigned HOST_WIDE_INT num_input_il_bytes; | |
442 | unsigned HOST_WIDE_INT num_uncompressed_il_bytes; | |
ee03e71d RB |
443 | unsigned HOST_WIDE_INT num_tree_bodies_output; |
444 | unsigned HOST_WIDE_INT num_pickle_refs_output; | |
d7f09764 DN |
445 | }; |
446 | ||
7b99cca4 | 447 | /* Entry of LTO symtab encoder. */ |
84562394 | 448 | struct lto_encoder_entry |
7b99cca4 | 449 | { |
5e20cdc9 | 450 | symtab_node *node; |
7b99cca4 JH |
451 | /* Is the node in this partition (i.e. ltrans of this partition will |
452 | be responsible for outputting it)? */ | |
453 | unsigned int in_partition:1; | |
454 | /* Do we encode body in this partition? */ | |
455 | unsigned int body:1; | |
456 | /* Do we encode initializer in this partition? | |
457 | For example the readonly variable initializers are encoded to aid | |
458 | constant folding even if they are not in the partition. */ | |
459 | unsigned int initializer:1; | |
84562394 | 460 | }; |
7b99cca4 | 461 | |
7b99cca4 | 462 | |
d7f09764 | 463 | /* Encoder data structure used to stream callgraph nodes. */ |
7380e6ef | 464 | struct lto_symtab_encoder_d |
d7f09764 | 465 | { |
9771b263 | 466 | vec<lto_encoder_entry> nodes; |
b787e7a2 | 467 | hash_map<symtab_node *, size_t> *map; |
2f41ecf5 | 468 | }; |
7380e6ef JH |
469 | |
470 | typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t; | |
2f41ecf5 | 471 | |
f27c1867 | 472 | /* Iterator structure for cgraph node sets. */ |
84562394 | 473 | struct lto_symtab_encoder_iterator |
703e95cf | 474 | { |
f27c1867 JH |
475 | lto_symtab_encoder_t encoder; |
476 | unsigned index; | |
84562394 | 477 | }; |
f27c1867 JH |
478 | |
479 | ||
480 | ||
d7f09764 DN |
481 | /* The lto_tree_ref_encoder struct is used to encode trees into indices. */ |
482 | ||
483 | struct lto_tree_ref_encoder | |
484 | { | |
1eb68d2d | 485 | hash_map<tree, unsigned> *tree_hash_table; /* Maps pointers to indices. */ |
d579fcda | 486 | vec<tree> trees; /* Maps indices to pointers. */ |
d7f09764 DN |
487 | }; |
488 | ||
489 | ||
490 | /* Structure to hold states of input scope. */ | |
907dadbd | 491 | struct GTY((for_user)) lto_in_decl_state |
d7f09764 DN |
492 | { |
493 | /* Array of lto_in_decl_buffers to store type and decls streams. */ | |
9c71e9df | 494 | vec<tree, va_gc> *streams[LTO_N_DECL_STREAMS]; |
d7f09764 DN |
495 | |
496 | /* If this in-decl state is associated with a function. FN_DECL | |
497 | point to the FUNCTION_DECL. */ | |
498 | tree fn_decl; | |
ca834876 JH |
499 | |
500 | /* True if decl state is compressed. */ | |
501 | bool compressed; | |
d7f09764 DN |
502 | }; |
503 | ||
504 | typedef struct lto_in_decl_state *lto_in_decl_state_ptr; | |
505 | ||
ca752f39 | 506 | struct decl_state_hasher : ggc_ptr_hash<lto_in_decl_state> |
907dadbd TS |
507 | { |
508 | static hashval_t | |
509 | hash (lto_in_decl_state *s) | |
510 | { | |
511 | return htab_hash_pointer (s->fn_decl); | |
512 | } | |
513 | ||
514 | static bool | |
515 | equal (lto_in_decl_state *a, lto_in_decl_state *b) | |
516 | { | |
517 | return a->fn_decl == b->fn_decl; | |
518 | } | |
519 | }; | |
d7f09764 DN |
520 | |
521 | /* The structure that holds all of the vectors of global types, | |
522 | decls and cgraph nodes used in the serialization of this file. */ | |
523 | struct lto_out_decl_state | |
524 | { | |
525 | /* The buffers contain the sets of decls of various kinds and types we have | |
526 | seen so far and the indexes assigned to them. */ | |
527 | struct lto_tree_ref_encoder streams[LTO_N_DECL_STREAMS]; | |
528 | ||
529 | /* Encoder for cgraph nodes. */ | |
7380e6ef | 530 | lto_symtab_encoder_t symtab_node_encoder; |
2f41ecf5 | 531 | |
d7f09764 DN |
532 | /* If this out-decl state belongs to a function, fn_decl points to that |
533 | function. Otherwise, it is NULL. */ | |
534 | tree fn_decl; | |
ca834876 JH |
535 | |
536 | /* True if decl state is compressed. */ | |
537 | bool compressed; | |
d7f09764 DN |
538 | }; |
539 | ||
540 | typedef struct lto_out_decl_state *lto_out_decl_state_ptr; | |
541 | ||
d7f09764 | 542 | |
aed7d7cf AK |
543 | /* Compact representation of a index <-> resolution pair. Unpacked to an |
544 | vector later. */ | |
545 | struct res_pair | |
546 | { | |
547 | ld_plugin_symbol_resolution_t res; | |
548 | unsigned index; | |
549 | }; | |
aed7d7cf | 550 | |
aed7d7cf | 551 | |
d7f09764 DN |
552 | /* One of these is allocated for each object file that being compiled |
553 | by lto. This structure contains the tables that are needed by the | |
554 | serialized functions and ipa passes to connect themselves to the | |
555 | global types and decls as they are reconstituted. */ | |
49ba8180 | 556 | struct GTY(()) lto_file_decl_data |
d7f09764 DN |
557 | { |
558 | /* Decl state currently used. */ | |
559 | struct lto_in_decl_state *current_decl_state; | |
560 | ||
561 | /* Decl state corresponding to regions outside of any functions | |
562 | in the compilation unit. */ | |
563 | struct lto_in_decl_state *global_decl_state; | |
564 | ||
565 | /* Table of cgraph nodes present in this file. */ | |
7380e6ef | 566 | lto_symtab_encoder_t GTY((skip)) symtab_node_encoder; |
2f41ecf5 | 567 | |
d7f09764 | 568 | /* Hash table maps lto-related section names to location in file. */ |
907dadbd | 569 | hash_table<decl_state_hasher> *function_decl_states; |
d7f09764 DN |
570 | |
571 | /* The .o file that these offsets relate to. */ | |
49ba8180 | 572 | const char *GTY((skip)) file_name; |
d7f09764 | 573 | |
d7f09764 | 574 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 575 | htab_t GTY((skip)) section_hash_table; |
d7f09764 DN |
576 | |
577 | /* Hash new name of renamed global declaration to its original name. */ | |
49ba8180 | 578 | htab_t GTY((skip)) renaming_hash_table; |
73ce4d1e AK |
579 | |
580 | /* Linked list used temporarily in reader */ | |
581 | struct lto_file_decl_data *next; | |
582 | ||
ebad2eee JH |
583 | /* Order in which the file appears on the command line. */ |
584 | int order; | |
585 | ||
73ce4d1e | 586 | /* Sub ID for merged objects. */ |
dde8b360 | 587 | unsigned HOST_WIDE_INT id; |
73ce4d1e AK |
588 | |
589 | /* Symbol resolutions for this file */ | |
9771b263 | 590 | vec<res_pair> GTY((skip)) respairs; |
aed7d7cf | 591 | unsigned max_index; |
db0bf14f | 592 | |
7f3577f5 | 593 | gcov_summary GTY((skip)) profile_info; |
bbf9ad07 JH |
594 | |
595 | /* Map assigning declarations their resolutions. */ | |
39c8aaa4 | 596 | hash_map<tree, ld_plugin_symbol_resolution> * GTY((skip)) resolution_map; |
db847fa8 JJ |
597 | |
598 | /* Mode translation table. */ | |
599 | const unsigned char *mode_table; | |
88614dfa ML |
600 | |
601 | /* Read LTO section. */ | |
602 | lto_section lto_section_header; | |
3c56d8d8 ML |
603 | |
604 | int order_base; | |
b74d8dc4 JH |
605 | |
606 | int unit_base; | |
86ff0533 PL |
607 | |
608 | unsigned mode_bits; | |
d7f09764 DN |
609 | }; |
610 | ||
a9429e29 LB |
611 | typedef struct lto_file_decl_data *lto_file_decl_data_ptr; |
612 | ||
d7f09764 DN |
613 | struct lto_char_ptr_base |
614 | { | |
615 | char *ptr; | |
616 | }; | |
617 | ||
618 | /* An incore byte stream to buffer the various parts of the function. | |
619 | The entire structure should be zeroed when created. The record | |
620 | consists of a set of blocks. The first sizeof (ptr) bytes are used | |
621 | as a chain, and the rest store the bytes to be written. */ | |
622 | struct lto_output_stream | |
623 | { | |
624 | /* The pointer to the first block in the stream. */ | |
625 | struct lto_char_ptr_base * first_block; | |
626 | ||
627 | /* The pointer to the last and current block in the stream. */ | |
628 | struct lto_char_ptr_base * current_block; | |
629 | ||
630 | /* The pointer to where the next char should be written. */ | |
631 | char * current_pointer; | |
632 | ||
633 | /* The number of characters left in the current block. */ | |
634 | unsigned int left_in_block; | |
635 | ||
636 | /* The block size of the last block allocated. */ | |
637 | unsigned int block_size; | |
638 | ||
639 | /* The total number of characters written. */ | |
640 | unsigned int total_size; | |
641 | }; | |
642 | ||
d7f09764 DN |
643 | /* A simple output block. This can be used for simple IPA passes that |
644 | do not need more than one stream. */ | |
645 | struct lto_simple_output_block | |
646 | { | |
647 | enum lto_section_type section_type; | |
648 | struct lto_out_decl_state *decl_state; | |
649 | ||
650 | /* The stream that the main tree codes are written to. */ | |
651 | struct lto_output_stream *main_stream; | |
652 | }; | |
653 | ||
4a8fb1a1 LC |
654 | /* String hashing. */ |
655 | ||
656 | struct string_slot | |
657 | { | |
658 | const char *s; | |
659 | int len; | |
660 | unsigned int slot_num; | |
661 | }; | |
662 | ||
663 | /* Hashtable helpers. */ | |
664 | ||
8d67ee55 | 665 | struct string_slot_hasher : nofree_ptr_hash <string_slot> |
4a8fb1a1 | 666 | { |
67f58944 TS |
667 | static inline hashval_t hash (const string_slot *); |
668 | static inline bool equal (const string_slot *, const string_slot *); | |
4a8fb1a1 LC |
669 | }; |
670 | ||
671 | /* Returns a hash code for DS. Adapted from libiberty's htab_hash_string | |
672 | to support strings that may not end in '\0'. */ | |
673 | ||
674 | inline hashval_t | |
67f58944 | 675 | string_slot_hasher::hash (const string_slot *ds) |
4a8fb1a1 LC |
676 | { |
677 | hashval_t r = ds->len; | |
678 | int i; | |
679 | ||
680 | for (i = 0; i < ds->len; i++) | |
681 | r = r * 67 + (unsigned)ds->s[i] - 113; | |
682 | return r; | |
683 | } | |
684 | ||
685 | /* Returns nonzero if DS1 and DS2 are equal. */ | |
686 | ||
687 | inline bool | |
67f58944 | 688 | string_slot_hasher::equal (const string_slot *ds1, const string_slot *ds2) |
4a8fb1a1 LC |
689 | { |
690 | if (ds1->len == ds2->len) | |
691 | return memcmp (ds1->s, ds2->s, ds1->len) == 0; | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
d7f09764 DN |
696 | /* Data structure holding all the data and descriptors used when writing |
697 | an LTO file. */ | |
698 | struct output_block | |
699 | { | |
700 | enum lto_section_type section_type; | |
701 | struct lto_out_decl_state *decl_state; | |
702 | ||
703 | /* The stream that the main tree codes are written to. */ | |
704 | struct lto_output_stream *main_stream; | |
705 | ||
706 | /* The stream that contains the string table. */ | |
707 | struct lto_output_stream *string_stream; | |
708 | ||
709 | /* The stream that contains the cfg. */ | |
710 | struct lto_output_stream *cfg_stream; | |
711 | ||
712 | /* The hash table that contains the set of strings we have seen so | |
713 | far and the indexes assigned to them. */ | |
c203e8a7 | 714 | hash_table<string_slot_hasher> *string_hash_table; |
d7f09764 | 715 | |
0b83e688 | 716 | /* The current symbol that we are currently serializing. Null |
d7f09764 | 717 | if we are serializing something else. */ |
f473c082 | 718 | symtab_node *symbol; |
d7f09764 DN |
719 | |
720 | /* These are the last file and line that were seen in the stream. | |
721 | If the current node differs from these, it needs to insert | |
722 | something into the stream and fix these up. */ | |
723 | const char *current_file; | |
724 | int current_line; | |
725 | int current_col; | |
6c1bc27c | 726 | bool current_sysp; |
70d8d9bd | 727 | bool reset_locus; |
3d0af0c9 | 728 | bool emit_pwd; |
3536ff2d | 729 | tree current_block; |
f1adf45b | 730 | unsigned current_discr; |
d7f09764 | 731 | |
d7f09764 | 732 | /* Cache of nodes written in this section. */ |
412288f1 | 733 | struct streamer_tree_cache_d *writer_cache; |
fac009a8 | 734 | |
03d90a20 JH |
735 | /* All trees identified as local to the unit streamed. */ |
736 | hash_set<tree> *local_trees; | |
737 | ||
fac009a8 JH |
738 | /* All data persistent across whole duration of output block |
739 | can go here. */ | |
740 | struct obstack obstack; | |
d7f09764 DN |
741 | }; |
742 | ||
743 | ||
744 | /* Data and descriptors used when reading from an LTO file. */ | |
6c1dae73 | 745 | class data_in |
d7f09764 | 746 | { |
6c1dae73 | 747 | public: |
d7f09764 DN |
748 | /* The global decls and types. */ |
749 | struct lto_file_decl_data *file_data; | |
750 | ||
d7f09764 DN |
751 | /* The string table. */ |
752 | const char *strings; | |
753 | ||
754 | /* The length of the string table. */ | |
755 | unsigned int strings_len; | |
756 | ||
d7f09764 | 757 | /* Maps each reference number to the resolution done by the linker. */ |
9771b263 | 758 | vec<ld_plugin_symbol_resolution_t> globals_resolution; |
d7f09764 DN |
759 | |
760 | /* Cache of pickled nodes. */ | |
412288f1 | 761 | struct streamer_tree_cache_d *reader_cache; |
eaeec5ec JH |
762 | |
763 | /* Cache of source code location. */ | |
764 | lto_location_cache location_cache; | |
d7f09764 DN |
765 | }; |
766 | ||
767 | ||
e53b6e56 | 768 | /* In lto-section-in.cc */ |
99b1c316 | 769 | extern class lto_input_block * lto_create_simple_input_block ( |
b8698a0f | 770 | struct lto_file_decl_data *, |
d7f09764 DN |
771 | enum lto_section_type, const char **, size_t *); |
772 | extern void | |
b8698a0f | 773 | lto_destroy_simple_input_block (struct lto_file_decl_data *, |
d7f09764 | 774 | enum lto_section_type, |
99b1c316 | 775 | class lto_input_block *, const char *, size_t); |
b8698a0f | 776 | extern void lto_set_in_hooks (struct lto_file_decl_data **, |
d7f09764 DN |
777 | lto_get_section_data_f *, |
778 | lto_free_section_data_f *); | |
779 | extern struct lto_file_decl_data **lto_get_file_decl_data (void); | |
780 | extern const char *lto_get_section_data (struct lto_file_decl_data *, | |
781 | enum lto_section_type, | |
3c56d8d8 | 782 | const char *, int, size_t *, |
ca834876 | 783 | bool decompress = false); |
3c56d8d8 ML |
784 | extern const char *lto_get_summary_section_data (struct lto_file_decl_data *, |
785 | enum lto_section_type, | |
786 | size_t *); | |
ca834876 JH |
787 | extern const char *lto_get_raw_section_data (struct lto_file_decl_data *, |
788 | enum lto_section_type, | |
3c56d8d8 | 789 | const char *, int, size_t *); |
d7f09764 | 790 | extern void lto_free_section_data (struct lto_file_decl_data *, |
ca834876 JH |
791 | enum lto_section_type, |
792 | const char *, const char *, size_t, | |
793 | bool decompress = false); | |
794 | extern void lto_free_raw_section_data (struct lto_file_decl_data *, | |
795 | enum lto_section_type, | |
796 | const char *, const char *, size_t); | |
d7f09764 DN |
797 | extern htab_t lto_create_renaming_table (void); |
798 | extern void lto_record_renamed_decl (struct lto_file_decl_data *, | |
799 | const char *, const char *); | |
800 | extern const char *lto_get_decl_name_mapping (struct lto_file_decl_data *, | |
801 | const char *); | |
802 | extern struct lto_in_decl_state *lto_new_in_decl_state (void); | |
803 | extern void lto_delete_in_decl_state (struct lto_in_decl_state *); | |
d7f09764 DN |
804 | extern struct lto_in_decl_state *lto_get_function_in_decl_state ( |
805 | struct lto_file_decl_data *, tree); | |
82e9d642 | 806 | extern void lto_free_function_in_decl_state (struct lto_in_decl_state *); |
5e20cdc9 | 807 | extern void lto_free_function_in_decl_state_for_node (symtab_node *); |
99b1c316 | 808 | extern void lto_section_overrun (class lto_input_block *) ATTRIBUTE_NORETURN; |
f242c0a5 JH |
809 | extern void lto_value_range_error (const char *, |
810 | HOST_WIDE_INT, HOST_WIDE_INT, | |
811 | HOST_WIDE_INT) ATTRIBUTE_NORETURN; | |
d7f09764 | 812 | |
e53b6e56 | 813 | /* In lto-section-out.cc */ |
d7f09764 DN |
814 | extern void lto_begin_section (const char *, bool); |
815 | extern void lto_end_section (void); | |
f6bcdb5e | 816 | extern void lto_write_data (const void *, unsigned int); |
ca834876 | 817 | extern void lto_write_raw_data (const void *, unsigned int); |
d7f09764 | 818 | extern void lto_write_stream (struct lto_output_stream *); |
d7f09764 DN |
819 | extern struct lto_simple_output_block *lto_create_simple_output_block ( |
820 | enum lto_section_type); | |
821 | extern void lto_destroy_simple_output_block (struct lto_simple_output_block *); | |
822 | extern struct lto_out_decl_state *lto_new_out_decl_state (void); | |
823 | extern void lto_delete_out_decl_state (struct lto_out_decl_state *); | |
824 | extern struct lto_out_decl_state *lto_get_out_decl_state (void); | |
825 | extern void lto_push_out_decl_state (struct lto_out_decl_state *); | |
826 | extern struct lto_out_decl_state *lto_pop_out_decl_state (void); | |
827 | extern void lto_record_function_out_decl_state (tree, | |
828 | struct lto_out_decl_state *); | |
bc0fe8cb | 829 | extern void lto_append_block (struct lto_output_stream *); |
d7f09764 DN |
830 | |
831 | ||
e53b6e56 | 832 | /* In lto-streamer.cc. */ |
1b34e6e2 BS |
833 | |
834 | /* Set when streaming LTO for offloading compiler. */ | |
835 | extern bool lto_stream_offload_p; | |
836 | ||
d7f09764 | 837 | extern const char *lto_tag_name (enum LTO_tags); |
3c56d8d8 ML |
838 | extern char *lto_get_section_name (int, const char *, int, |
839 | struct lto_file_decl_data *); | |
b8f4e58f | 840 | extern void print_lto_report (const char *); |
d7f09764 DN |
841 | extern void lto_streamer_init (void); |
842 | extern bool gate_lto_out (void); | |
b898d037 | 843 | extern void lto_check_version (int, int, const char *); |
47c79d56 | 844 | extern void lto_streamer_hooks_init (void); |
d7f09764 | 845 | |
e53b6e56 | 846 | /* In lto-streamer-in.cc */ |
d7f09764 | 847 | extern void lto_input_cgraph (struct lto_file_decl_data *, const char *); |
47c79d56 | 848 | extern void lto_reader_init (void); |
c38ee9a2 | 849 | extern void lto_free_file_name_hash (void); |
5e581212 JH |
850 | extern void lto_input_function_body (struct lto_file_decl_data *, |
851 | struct cgraph_node *, | |
d7f09764 | 852 | const char *); |
0b83e688 JH |
853 | extern void lto_input_variable_constructor (struct lto_file_decl_data *, |
854 | struct varpool_node *, | |
855 | const char *); | |
d7f09764 DN |
856 | extern void lto_input_constructors_and_inits (struct lto_file_decl_data *, |
857 | const char *); | |
398f05da | 858 | extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int); |
db847fa8 | 859 | extern void lto_input_mode_table (struct lto_file_decl_data *); |
99b1c316 | 860 | extern class data_in *lto_data_in_create (struct lto_file_decl_data *, |
d7f09764 | 861 | const char *, unsigned, |
9771b263 | 862 | vec<ld_plugin_symbol_resolution_t> ); |
99b1c316 MS |
863 | extern void lto_data_in_delete (class data_in *); |
864 | extern void lto_input_data_block (class lto_input_block *, void *, size_t); | |
865 | void lto_input_location (location_t *, struct bitpack_d *, class data_in *); | |
99b1c316 | 866 | tree lto_input_tree_ref (class lto_input_block *, class data_in *, |
f0efc7aa DN |
867 | struct function *, enum LTO_tags); |
868 | void lto_tag_check_set (enum LTO_tags, int, ...); | |
869 | void lto_init_eh (void); | |
99b1c316 | 870 | hashval_t lto_input_scc (class lto_input_block *, class data_in *, |
03d90a20 | 871 | unsigned *, unsigned *, bool); |
99b1c316 | 872 | tree lto_input_tree_1 (class lto_input_block *, class data_in *, |
ee03e71d | 873 | enum LTO_tags, hashval_t hash); |
99b1c316 | 874 | tree lto_input_tree (class lto_input_block *, class data_in *); |
33e23881 | 875 | tree stream_read_tree_ref (class lto_input_block *, class data_in *); |
d7f09764 DN |
876 | |
877 | ||
e53b6e56 | 878 | /* In lto-streamer-out.cc */ |
d7f09764 DN |
879 | extern void lto_register_decl_definition (tree, struct lto_file_decl_data *); |
880 | extern struct output_block *create_output_block (enum lto_section_type); | |
881 | extern void destroy_output_block (struct output_block *); | |
7e54c608 | 882 | extern void lto_output_tree (struct output_block *, tree, bool, bool); |
33e23881 | 883 | extern void stream_write_tree_ref (struct output_block *, tree); |
ff7da2b5 JH |
884 | extern void lto_output_var_decl_ref (struct lto_out_decl_state *, |
885 | struct lto_output_stream *, tree); | |
886 | extern void lto_output_fn_decl_ref (struct lto_out_decl_state *, | |
887 | struct lto_output_stream *, tree); | |
888 | extern tree lto_input_var_decl_ref (lto_input_block *, lto_file_decl_data *); | |
889 | extern tree lto_input_fn_decl_ref (lto_input_block *, lto_file_decl_data *); | |
49f836ba | 890 | extern void lto_output_toplevel_asms (void); |
fb3f88cc | 891 | extern void produce_asm (struct output_block *ob, tree fn); |
38f4f02f BS |
892 | extern void lto_output (); |
893 | extern void produce_asm_for_decls (); | |
a183b5c7 DN |
894 | void lto_output_decl_state_streams (struct output_block *, |
895 | struct lto_out_decl_state *); | |
896 | void lto_output_decl_state_refs (struct output_block *, | |
897 | struct lto_output_stream *, | |
898 | struct lto_out_decl_state *); | |
3536ff2d JJ |
899 | void lto_output_location (struct output_block *, struct bitpack_d *, |
900 | location_t); | |
901 | void lto_output_location_and_block (struct output_block *, struct bitpack_d *, | |
902 | location_t); | |
db847fa8 | 903 | void lto_output_init_mode_table (void); |
1fcf52a6 | 904 | void lto_prepare_function_for_streaming (cgraph_node *); |
d7f09764 DN |
905 | |
906 | ||
e53b6e56 | 907 | /* In lto-cgraph.cc */ |
9cf7975d | 908 | extern bool asm_nodes_output; |
e75f8f79 | 909 | lto_symtab_encoder_t lto_symtab_encoder_new (bool); |
5e20cdc9 | 910 | int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 911 | void lto_symtab_encoder_delete (lto_symtab_encoder_t); |
5e20cdc9 | 912 | bool lto_symtab_encoder_delete_node (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 913 | bool lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t, |
91fbf0c7 | 914 | struct cgraph_node *); |
f27c1867 | 915 | bool lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t, |
5e20cdc9 | 916 | symtab_node *); |
f27c1867 | 917 | void lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t, |
5e20cdc9 | 918 | symtab_node *); |
91fbf0c7 | 919 | |
7380e6ef | 920 | bool lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t, |
2c8326a5 | 921 | varpool_node *); |
f27c1867 | 922 | void output_symtab (void); |
ab96cc5b | 923 | void input_symtab (void); |
ec6fe917 | 924 | void output_offload_tables (void); |
ed5d948d | 925 | void input_offload_tables (bool); |
369451ec | 926 | bool referenced_from_other_partition_p (struct ipa_ref_list *, |
f27c1867 | 927 | lto_symtab_encoder_t); |
9a809897 | 928 | bool reachable_from_other_partition_p (struct cgraph_node *, |
f27c1867 | 929 | lto_symtab_encoder_t); |
f473c082 | 930 | bool referenced_from_this_partition_p (symtab_node *, |
f27c1867 | 931 | lto_symtab_encoder_t); |
f3380641 | 932 | bool reachable_from_this_partition_p (struct cgraph_node *, |
f27c1867 | 933 | lto_symtab_encoder_t); |
b4661bfe | 934 | lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder); |
837bac8c | 935 | void select_what_to_stream (void); |
d7f09764 | 936 | |
e53b6e56 | 937 | /* In omp-general.cc. */ |
f165ef89 JJ |
938 | void omp_lto_output_declare_variant_alt (lto_simple_output_block *, |
939 | cgraph_node *, lto_symtab_encoder_t); | |
940 | void omp_lto_input_declare_variant_alt (lto_input_block *, cgraph_node *, | |
941 | vec<symtab_node *>); | |
942 | ||
e53b6e56 | 943 | /* In options-save.cc. */ |
325fe981 JH |
944 | void cl_target_option_stream_out (struct output_block *, struct bitpack_d *, |
945 | struct cl_target_option *); | |
946 | ||
99b1c316 | 947 | void cl_target_option_stream_in (class data_in *, |
325fe981 JH |
948 | struct bitpack_d *, |
949 | struct cl_target_option *); | |
950 | ||
c518c102 ML |
951 | void cl_optimization_stream_out (struct output_block *, |
952 | struct bitpack_d *, struct cl_optimization *); | |
ca9a04da | 953 | |
99b1c316 | 954 | void cl_optimization_stream_in (class data_in *, |
c518c102 | 955 | struct bitpack_d *, struct cl_optimization *); |
ca9a04da | 956 | |
d7f09764 | 957 | |
d7f09764 | 958 | |
e53b6e56 | 959 | /* In lto-opts.cc. */ |
d7f09764 | 960 | extern void lto_write_options (void); |
d7f09764 DN |
961 | |
962 | ||
d7f09764 DN |
963 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
964 | extern struct lto_stats_d lto_stats; | |
965 | ||
966 | /* Section names corresponding to the values of enum lto_section_type. */ | |
967 | extern const char *lto_section_name[]; | |
968 | ||
969 | /* Holds all the out decl states of functions output so far in the | |
970 | current output file. */ | |
9771b263 | 971 | extern vec<lto_out_decl_state_ptr> lto_function_decl_states; |
d7f09764 DN |
972 | |
973 | /* Return true if LTO tag TAG corresponds to a tree code. */ | |
cb3e0eac | 974 | inline bool |
d7f09764 DN |
975 | lto_tag_is_tree_code_p (enum LTO_tags tag) |
976 | { | |
dda71670 | 977 | return tag > LTO_first_tree_tag && (unsigned) tag <= MAX_TREE_CODES; |
d7f09764 DN |
978 | } |
979 | ||
980 | ||
981 | /* Return true if LTO tag TAG corresponds to a gimple code. */ | |
cb3e0eac | 982 | inline bool |
d7f09764 DN |
983 | lto_tag_is_gimple_code_p (enum LTO_tags tag) |
984 | { | |
dda71670 JH |
985 | return (unsigned) tag >= LTO_first_gimple_tag |
986 | && (unsigned) tag | |
987 | < LTO_first_gimple_tag + LAST_AND_UNUSED_GIMPLE_CODE; | |
d7f09764 DN |
988 | } |
989 | ||
990 | ||
991 | /* Return the LTO tag corresponding to gimple code CODE. See enum | |
992 | LTO_tags for details on the conversion. */ | |
cb3e0eac | 993 | inline enum LTO_tags |
d7f09764 DN |
994 | lto_gimple_code_to_tag (enum gimple_code code) |
995 | { | |
dda71670 | 996 | return (enum LTO_tags) ((unsigned) code + LTO_first_gimple_tag); |
d7f09764 DN |
997 | } |
998 | ||
999 | ||
1000 | /* Return the GIMPLE code corresponding to TAG. See enum LTO_tags for | |
1001 | details on the conversion. */ | |
cb3e0eac | 1002 | inline enum gimple_code |
d7f09764 DN |
1003 | lto_tag_to_gimple_code (enum LTO_tags tag) |
1004 | { | |
1005 | gcc_assert (lto_tag_is_gimple_code_p (tag)); | |
dda71670 | 1006 | return (enum gimple_code) ((unsigned) tag - LTO_first_gimple_tag); |
d7f09764 DN |
1007 | } |
1008 | ||
1009 | ||
1010 | /* Return the LTO tag corresponding to tree code CODE. See enum | |
1011 | LTO_tags for details on the conversion. */ | |
cb3e0eac | 1012 | inline enum LTO_tags |
d7f09764 DN |
1013 | lto_tree_code_to_tag (enum tree_code code) |
1014 | { | |
dda71670 | 1015 | return (enum LTO_tags) ((unsigned) code + LTO_first_tree_tag); |
d7f09764 DN |
1016 | } |
1017 | ||
1018 | ||
1019 | /* Return the tree code corresponding to TAG. See enum LTO_tags for | |
1020 | details on the conversion. */ | |
cb3e0eac | 1021 | inline enum tree_code |
d7f09764 DN |
1022 | lto_tag_to_tree_code (enum LTO_tags tag) |
1023 | { | |
1024 | gcc_assert (lto_tag_is_tree_code_p (tag)); | |
dda71670 | 1025 | return (enum tree_code) ((unsigned) tag - LTO_first_tree_tag); |
d7f09764 DN |
1026 | } |
1027 | ||
f0efc7aa | 1028 | /* Check that tag ACTUAL == EXPECTED. */ |
cb3e0eac | 1029 | inline void |
f0efc7aa DN |
1030 | lto_tag_check (enum LTO_tags actual, enum LTO_tags expected) |
1031 | { | |
1032 | if (actual != expected) | |
1033 | internal_error ("bytecode stream: expected tag %s instead of %s", | |
1034 | lto_tag_name (expected), lto_tag_name (actual)); | |
1035 | } | |
1036 | ||
1037 | /* Check that tag ACTUAL is in the range [TAG1, TAG2]. */ | |
cb3e0eac | 1038 | inline void |
f0efc7aa DN |
1039 | lto_tag_check_range (enum LTO_tags actual, enum LTO_tags tag1, |
1040 | enum LTO_tags tag2) | |
1041 | { | |
1042 | if (actual < tag1 || actual > tag2) | |
1043 | internal_error ("bytecode stream: tag %s is not in the expected range " | |
1044 | "[%s, %s]", | |
1045 | lto_tag_name (actual), | |
1046 | lto_tag_name (tag1), | |
1047 | lto_tag_name (tag2)); | |
1048 | } | |
1049 | ||
d7f09764 | 1050 | /* Initialize an lto_out_decl_buffer ENCODER. */ |
cb3e0eac | 1051 | inline void |
d579fcda | 1052 | lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
d7f09764 | 1053 | { |
1eb68d2d | 1054 | encoder->tree_hash_table = new hash_map<tree, unsigned> (251); |
9771b263 | 1055 | encoder->trees.create (0); |
d7f09764 DN |
1056 | } |
1057 | ||
1058 | ||
073a8998 | 1059 | /* Destroy an lto_tree_ref_encoder ENCODER by freeing its contents. The |
d7f09764 | 1060 | memory used by ENCODER is not freed by this function. */ |
cb3e0eac | 1061 | inline void |
d7f09764 DN |
1062 | lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
1063 | { | |
1064 | /* Hash table may be delete already. */ | |
1eb68d2d TS |
1065 | delete encoder->tree_hash_table; |
1066 | encoder->tree_hash_table = NULL; | |
9771b263 | 1067 | encoder->trees.release (); |
d7f09764 DN |
1068 | } |
1069 | ||
1070 | /* Return the number of trees encoded in ENCODER. */ | |
cb3e0eac | 1071 | inline unsigned int |
d7f09764 DN |
1072 | lto_tree_ref_encoder_size (struct lto_tree_ref_encoder *encoder) |
1073 | { | |
9771b263 | 1074 | return encoder->trees.length (); |
d7f09764 DN |
1075 | } |
1076 | ||
1077 | /* Return the IDX-th tree in ENCODER. */ | |
cb3e0eac | 1078 | inline tree |
d7f09764 DN |
1079 | lto_tree_ref_encoder_get_tree (struct lto_tree_ref_encoder *encoder, |
1080 | unsigned int idx) | |
1081 | { | |
9771b263 | 1082 | return encoder->trees[idx]; |
d7f09764 DN |
1083 | } |
1084 | ||
f27c1867 | 1085 | /* Return number of encoded nodes in ENCODER. */ |
cb3e0eac | 1086 | inline int |
f27c1867 JH |
1087 | lto_symtab_encoder_size (lto_symtab_encoder_t encoder) |
1088 | { | |
9771b263 | 1089 | return encoder->nodes.length (); |
7b99cca4 JH |
1090 | } |
1091 | ||
1092 | /* Value used to represent failure of lto_symtab_encoder_lookup. */ | |
1093 | #define LCC_NOT_FOUND (-1) | |
1094 | ||
1095 | /* Look up NODE in encoder. Return NODE's reference if it has been encoded | |
1096 | or LCC_NOT_FOUND if it is not there. */ | |
1097 | ||
cb3e0eac | 1098 | inline int |
7b99cca4 | 1099 | lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder, |
5e20cdc9 | 1100 | symtab_node *node) |
7b99cca4 | 1101 | { |
b787e7a2 TS |
1102 | size_t *slot = encoder->map->get (node); |
1103 | return (slot && *slot ? *(slot) - 1 : LCC_NOT_FOUND); | |
f27c1867 JH |
1104 | } |
1105 | ||
1106 | /* Return true if iterator LSE points to nothing. */ | |
cb3e0eac | 1107 | inline bool |
f27c1867 JH |
1108 | lsei_end_p (lto_symtab_encoder_iterator lsei) |
1109 | { | |
1110 | return lsei.index >= (unsigned)lto_symtab_encoder_size (lsei.encoder); | |
1111 | } | |
1112 | ||
1113 | /* Advance iterator LSE. */ | |
cb3e0eac | 1114 | inline void |
f27c1867 JH |
1115 | lsei_next (lto_symtab_encoder_iterator *lsei) |
1116 | { | |
1117 | lsei->index++; | |
1118 | } | |
1119 | ||
1120 | /* Return the node pointed to by LSI. */ | |
cb3e0eac | 1121 | inline symtab_node * |
f27c1867 JH |
1122 | lsei_node (lto_symtab_encoder_iterator lsei) |
1123 | { | |
9771b263 | 1124 | return lsei.encoder->nodes[lsei.index].node; |
f27c1867 JH |
1125 | } |
1126 | ||
1127 | /* Return the node pointed to by LSI. */ | |
cb3e0eac | 1128 | inline struct cgraph_node * |
f27c1867 JH |
1129 | lsei_cgraph_node (lto_symtab_encoder_iterator lsei) |
1130 | { | |
d52f5295 | 1131 | return dyn_cast<cgraph_node *> (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1132 | } |
1133 | ||
1134 | /* Return the node pointed to by LSI. */ | |
cb3e0eac | 1135 | inline varpool_node * |
f27c1867 JH |
1136 | lsei_varpool_node (lto_symtab_encoder_iterator lsei) |
1137 | { | |
d52f5295 | 1138 | return dyn_cast<varpool_node *> (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1139 | } |
1140 | ||
f27c1867 JH |
1141 | /* Return the cgraph node corresponding to REF using ENCODER. */ |
1142 | ||
cb3e0eac | 1143 | inline symtab_node * |
f27c1867 JH |
1144 | lto_symtab_encoder_deref (lto_symtab_encoder_t encoder, int ref) |
1145 | { | |
1146 | if (ref == LCC_NOT_FOUND) | |
1147 | return NULL; | |
1148 | ||
9771b263 | 1149 | return encoder->nodes[ref].node; |
f27c1867 JH |
1150 | } |
1151 | ||
1152 | /* Return an iterator to the first node in LSI. */ | |
cb3e0eac | 1153 | inline lto_symtab_encoder_iterator |
f27c1867 JH |
1154 | lsei_start (lto_symtab_encoder_t encoder) |
1155 | { | |
1156 | lto_symtab_encoder_iterator lsei; | |
1157 | ||
1158 | lsei.encoder = encoder; | |
1159 | lsei.index = 0; | |
1160 | return lsei; | |
1161 | } | |
1162 | ||
1163 | /* Advance iterator LSE. */ | |
cb3e0eac | 1164 | inline void |
f27c1867 JH |
1165 | lsei_next_in_partition (lto_symtab_encoder_iterator *lsei) |
1166 | { | |
1167 | lsei_next (lsei); | |
1168 | while (!lsei_end_p (*lsei) | |
1169 | && !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))) | |
1170 | lsei_next (lsei); | |
1171 | } | |
1172 | ||
1173 | /* Return an iterator to the first node in LSI. */ | |
cb3e0eac | 1174 | inline lto_symtab_encoder_iterator |
f27c1867 JH |
1175 | lsei_start_in_partition (lto_symtab_encoder_t encoder) |
1176 | { | |
1177 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1178 | ||
1179 | if (lsei_end_p (lsei)) | |
1180 | return lsei; | |
1181 | if (!lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) | |
1182 | lsei_next_in_partition (&lsei); | |
1183 | ||
1184 | return lsei; | |
1185 | } | |
1186 | ||
1187 | /* Advance iterator LSE. */ | |
cb3e0eac | 1188 | inline void |
f27c1867 JH |
1189 | lsei_next_function_in_partition (lto_symtab_encoder_iterator *lsei) |
1190 | { | |
1191 | lsei_next (lsei); | |
1192 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1193 | && (!is_a <cgraph_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1194 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1195 | lsei_next (lsei); | |
1196 | } | |
1197 | ||
1198 | /* Return an iterator to the first node in LSI. */ | |
cb3e0eac | 1199 | inline lto_symtab_encoder_iterator |
f27c1867 JH |
1200 | lsei_start_function_in_partition (lto_symtab_encoder_t encoder) |
1201 | { | |
1202 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1203 | ||
1204 | if (lsei_end_p (lsei)) | |
1205 | return lsei; | |
7de90a6c | 1206 | if (!is_a <cgraph_node *> (lsei_node (lsei)) |
f27c1867 JH |
1207 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1208 | lsei_next_function_in_partition (&lsei); | |
1209 | ||
1210 | return lsei; | |
1211 | } | |
1212 | ||
1213 | /* Advance iterator LSE. */ | |
cb3e0eac | 1214 | inline void |
f27c1867 JH |
1215 | lsei_next_variable_in_partition (lto_symtab_encoder_iterator *lsei) |
1216 | { | |
1217 | lsei_next (lsei); | |
1218 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1219 | && (!is_a <varpool_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1220 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1221 | lsei_next (lsei); | |
1222 | } | |
1223 | ||
1224 | /* Return an iterator to the first node in LSI. */ | |
cb3e0eac | 1225 | inline lto_symtab_encoder_iterator |
f27c1867 JH |
1226 | lsei_start_variable_in_partition (lto_symtab_encoder_t encoder) |
1227 | { | |
1228 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1229 | ||
1230 | if (lsei_end_p (lsei)) | |
1231 | return lsei; | |
7de90a6c | 1232 | if (!is_a <varpool_node *> (lsei_node (lsei)) |
f27c1867 JH |
1233 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1234 | lsei_next_variable_in_partition (&lsei); | |
1235 | ||
1236 | return lsei; | |
1237 | } | |
1238 | ||
1ea85365 RB |
1239 | /* Entry for the delayed registering of decl -> DIE references. */ |
1240 | struct dref_entry { | |
1241 | tree decl; | |
1242 | const char *sym; | |
1243 | unsigned HOST_WIDE_INT off; | |
1244 | }; | |
1245 | ||
1246 | extern vec<dref_entry> dref_queue; | |
1247 | ||
b4da704c | 1248 | extern FILE *streamer_dump_file; |
1ea85365 | 1249 | |
d7f09764 | 1250 | #endif /* GCC_LTO_STREAMER_H */ |