1 | /* Data structures and declarations used for reading and writing |
2 | GIMPLE to a file stream. |
3 | |
4 | Copyright (C) 2009-2023 Free Software Foundation, Inc. |
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" |
27 | #include "gcov-io.h" |
28 | #include "diagnostic.h" |
29 | #include "version.h" |
30 | |
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 | |
53 | 7) THE LABEL NAMES. |
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 | |
62 | 9) THE CFG. |
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 |
66 | properly restore them. |
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 |
73 | |
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 |
82 | defined in except.cc. |
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 | |
124 | #define LTO_major_version GCC_major_version |
125 | #define LTO_minor_version 0 |
126 | |
127 | typedef unsigned char lto_decl_flags_t; |
128 | |
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; |
132 | |
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. */ |
137 | enum LTO_tags |
138 | { |
139 | LTO_null = 0, |
140 | |
141 | /* Reference to previously-streamed node. */ |
142 | LTO_tree_pickle_reference, |
143 | |
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, |
152 | |
153 | LTO_ssa_name_ref, |
154 | |
155 | /* Special for global streamer. A blob of unnamed tree nodes. */ |
156 | LTO_tree_scc, |
157 | |
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, |
173 | LTO_bb1, |
174 | |
175 | /* EH region holding the previous statement. */ |
176 | LTO_eh_region, |
177 | |
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 | |
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 |
206 | LTO_SECTION_NAME array in lto-section-in.cc. */ |
207 | enum lto_section_type |
208 | { |
209 | LTO_section_decls = 0, |
210 | LTO_section_function_body, |
211 | LTO_section_static_initializer, |
212 | LTO_section_symtab, |
213 | LTO_section_symtab_extension, |
214 | LTO_section_refs, |
215 | LTO_section_asm, |
216 | LTO_section_jump_functions, |
217 | LTO_section_ipa_pure_const, |
218 | LTO_section_ipa_reference, |
219 | LTO_section_ipa_profile, |
220 | LTO_section_symtab_nodes, |
221 | LTO_section_opts, |
222 | LTO_section_cgraph_opt_sum, |
223 | LTO_section_ipa_fn_summary, |
224 | LTO_section_ipcp_transform, |
225 | LTO_section_ipa_icf, |
226 | LTO_section_offload_table, |
227 | LTO_section_mode_table, |
228 | LTO_section_lto, |
229 | LTO_section_ipa_sra, |
230 | LTO_section_odr_types, |
231 | LTO_section_ipa_modref, |
232 | LTO_N_SECTION_TYPES /* Must be last. */ |
233 | }; |
234 | |
235 | /* Indices to the various function, type and symbol streams. */ |
236 | enum lto_decl_stream_e_t |
237 | { |
238 | LTO_DECL_STREAM = 0, /* Must be first. */ |
239 | LTO_N_DECL_STREAMS |
240 | }; |
241 | |
242 | typedef enum ld_plugin_symbol_resolution ld_plugin_symbol_resolution_t; |
243 | |
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 |
248 | and is only used when finding a function body; otherwise it is |
249 | NULL. The fourth parameter is the length of the data returned. */ |
250 | typedef const char* (lto_get_section_data_f) (struct lto_file_decl_data *, |
251 | enum lto_section_type, |
252 | const char *, |
253 | int, |
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 |
258 | itself and the fifth is the length of the data. */ |
259 | typedef void (lto_free_section_data_f) (struct lto_file_decl_data *, |
260 | enum lto_section_type, |
261 | const char *, |
262 | const char *, |
263 | size_t); |
264 | |
265 | /* The location cache holds expanded locations for streamed in trees. |
266 | This is done to reduce memory usage of libcpp linemap that strongly prefers |
267 | locations to be inserted in the source order. */ |
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, |
280 | class data_in *data_in); |
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); |
284 | lto_location_cache () |
285 | : loc_cache (), accepted_length (0), current_file (NULL), current_line (0), |
286 | current_col (0), current_sysp (false), current_loc (UNKNOWN_LOCATION), |
287 | current_block (NULL_TREE) |
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; |
312 | bool sysp; |
313 | tree block; |
314 | unsigned discr; |
315 | }; |
316 | |
317 | /* The location cache. */ |
318 | |
319 | auto_vec<cached_location> loc_cache; |
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; |
334 | bool current_sysp; |
335 | location_t current_loc; |
336 | tree current_block; |
337 | unsigned current_discr; |
338 | }; |
339 | |
340 | /* Structure used as buffer for reading an LTO file. */ |
341 | class lto_input_block |
342 | { |
343 | public: |
344 | /* Special constructor for the string table, it abuses this to |
345 | do random access but use the uhwi decoder. */ |
346 | lto_input_block (const char *data_, unsigned int p_, unsigned int len_, |
347 | const lto_file_decl_data *file_data_) |
348 | : data (data_), file_data (file_data_), p (p_), len (len_) {} |
349 | lto_input_block (const char *data_, unsigned int len_, |
350 | const lto_file_decl_data *file_data_) |
351 | : data (data_), file_data (file_data_), p (0), len (len_) {} |
352 | |
353 | const char *data; |
354 | const lto_file_decl_data *file_data; |
355 | unsigned int p; |
356 | unsigned int len; |
357 | }; |
358 | |
359 | /* Compression algorithm used for compression of LTO bytecode. */ |
360 | |
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 |
371 | { |
372 | int16_t major_version; |
373 | int16_t minor_version; |
374 | unsigned char slim_object; |
375 | unsigned char _padding; |
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 | } |
391 | }; |
392 | |
393 | STATIC_ASSERT (sizeof (lto_section) == 8); |
394 | |
395 | /* The is the first part of the record in an LTO file for many of the |
396 | IPA passes. */ |
397 | struct |
398 | { |
399 | /* Size of main gimple body of function. */ |
400 | int32_t main_size; |
401 | }; |
402 | |
403 | struct : lto_simple_header |
404 | { |
405 | /* Size of the string table. */ |
406 | int32_t ; |
407 | }; |
408 | |
409 | /* The header for a function body. */ |
410 | struct : lto_simple_header_with_strings |
411 | { |
412 | /* Size of the cfg. */ |
413 | int32_t ; |
414 | }; |
415 | |
416 | |
417 | /* Structure describing a symbol section. */ |
418 | struct : lto_simple_header_with_strings |
419 | { |
420 | /* Size of region for decl state. */ |
421 | int32_t ; |
422 | |
423 | /* Number of nodes in globals stream. */ |
424 | int32_t ; |
425 | }; |
426 | |
427 | |
428 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
429 | struct lto_stats_d |
430 | { |
431 | unsigned HOST_WIDE_INT num_input_cgraph_nodes; |
432 | unsigned HOST_WIDE_INT num_output_symtab_nodes; |
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; |
443 | unsigned HOST_WIDE_INT num_tree_bodies_output; |
444 | unsigned HOST_WIDE_INT num_pickle_refs_output; |
445 | }; |
446 | |
447 | /* Entry of LTO symtab encoder. */ |
448 | struct lto_encoder_entry |
449 | { |
450 | symtab_node *node; |
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; |
460 | }; |
461 | |
462 | |
463 | /* Encoder data structure used to stream callgraph nodes. */ |
464 | struct lto_symtab_encoder_d |
465 | { |
466 | vec<lto_encoder_entry> nodes; |
467 | hash_map<symtab_node *, size_t> *map; |
468 | }; |
469 | |
470 | typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t; |
471 | |
472 | /* Iterator structure for cgraph node sets. */ |
473 | struct lto_symtab_encoder_iterator |
474 | { |
475 | lto_symtab_encoder_t encoder; |
476 | unsigned index; |
477 | }; |
478 | |
479 | |
480 | |
481 | /* The lto_tree_ref_encoder struct is used to encode trees into indices. */ |
482 | |
483 | struct lto_tree_ref_encoder |
484 | { |
485 | hash_map<tree, unsigned> *tree_hash_table; /* Maps pointers to indices. */ |
486 | vec<tree> trees; /* Maps indices to pointers. */ |
487 | }; |
488 | |
489 | |
490 | /* Structure to hold states of input scope. */ |
491 | struct GTY((for_user)) lto_in_decl_state |
492 | { |
493 | /* Array of lto_in_decl_buffers to store type and decls streams. */ |
494 | vec<tree, va_gc> *streams[LTO_N_DECL_STREAMS]; |
495 | |
496 | /* If this in-decl state is associated with a function. FN_DECL |
497 | point to the FUNCTION_DECL. */ |
498 | tree fn_decl; |
499 | |
500 | /* True if decl state is compressed. */ |
501 | bool compressed; |
502 | }; |
503 | |
504 | typedef struct lto_in_decl_state *lto_in_decl_state_ptr; |
505 | |
506 | struct decl_state_hasher : ggc_ptr_hash<lto_in_decl_state> |
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 | }; |
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. */ |
530 | lto_symtab_encoder_t symtab_node_encoder; |
531 | |
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; |
535 | |
536 | /* True if decl state is compressed. */ |
537 | bool compressed; |
538 | }; |
539 | |
540 | typedef struct lto_out_decl_state *lto_out_decl_state_ptr; |
541 | |
542 | |
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 | }; |
550 | |
551 | |
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. */ |
556 | struct GTY(()) lto_file_decl_data |
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. */ |
566 | lto_symtab_encoder_t GTY((skip)) symtab_node_encoder; |
567 | |
568 | /* Hash table maps lto-related section names to location in file. */ |
569 | hash_table<decl_state_hasher> *function_decl_states; |
570 | |
571 | /* The .o file that these offsets relate to. */ |
572 | const char *GTY((skip)) file_name; |
573 | |
574 | /* Hash table maps lto-related section names to location in file. */ |
575 | htab_t GTY((skip)) section_hash_table; |
576 | |
577 | /* Hash new name of renamed global declaration to its original name. */ |
578 | htab_t GTY((skip)) renaming_hash_table; |
579 | |
580 | /* Linked list used temporarily in reader */ |
581 | struct lto_file_decl_data *next; |
582 | |
583 | /* Order in which the file appears on the command line. */ |
584 | int order; |
585 | |
586 | /* Sub ID for merged objects. */ |
587 | unsigned HOST_WIDE_INT id; |
588 | |
589 | /* Symbol resolutions for this file */ |
590 | vec<res_pair> GTY((skip)) respairs; |
591 | unsigned max_index; |
592 | |
593 | gcov_summary GTY((skip)) profile_info; |
594 | |
595 | /* Map assigning declarations their resolutions. */ |
596 | hash_map<tree, ld_plugin_symbol_resolution> * GTY((skip)) resolution_map; |
597 | |
598 | /* Mode translation table. */ |
599 | const unsigned char *mode_table; |
600 | |
601 | /* Read LTO section. */ |
602 | lto_section ; |
603 | |
604 | int order_base; |
605 | |
606 | int unit_base; |
607 | |
608 | unsigned mode_bits; |
609 | }; |
610 | |
611 | typedef struct lto_file_decl_data *lto_file_decl_data_ptr; |
612 | |
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 | |
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 | |
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 | |
665 | struct string_slot_hasher : nofree_ptr_hash <string_slot> |
666 | { |
667 | static inline hashval_t hash (const string_slot *); |
668 | static inline bool equal (const string_slot *, const string_slot *); |
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 |
675 | string_slot_hasher::hash (const string_slot *ds) |
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 |
688 | string_slot_hasher::equal (const string_slot *ds1, const string_slot *ds2) |
689 | { |
690 | if (ds1->len == ds2->len) |
691 | return memcmp (s1: ds1->s, s2: ds2->s, n: ds1->len) == 0; |
692 | |
693 | return 0; |
694 | } |
695 | |
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. */ |
714 | hash_table<string_slot_hasher> *string_hash_table; |
715 | |
716 | /* The current symbol that we are currently serializing. Null |
717 | if we are serializing something else. */ |
718 | symtab_node *symbol; |
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; |
726 | bool current_sysp; |
727 | bool reset_locus; |
728 | bool emit_pwd; |
729 | tree current_block; |
730 | unsigned current_discr; |
731 | |
732 | /* Cache of nodes written in this section. */ |
733 | struct streamer_tree_cache_d *writer_cache; |
734 | |
735 | /* All trees identified as local to the unit streamed. */ |
736 | hash_set<tree> *local_trees; |
737 | |
738 | /* All data persistent across whole duration of output block |
739 | can go here. */ |
740 | struct obstack obstack; |
741 | }; |
742 | |
743 | |
744 | /* Data and descriptors used when reading from an LTO file. */ |
745 | class data_in |
746 | { |
747 | public: |
748 | /* The global decls and types. */ |
749 | struct lto_file_decl_data *file_data; |
750 | |
751 | /* The string table. */ |
752 | const char *strings; |
753 | |
754 | /* The length of the string table. */ |
755 | unsigned int strings_len; |
756 | |
757 | /* Maps each reference number to the resolution done by the linker. */ |
758 | vec<ld_plugin_symbol_resolution_t> globals_resolution; |
759 | |
760 | /* Cache of pickled nodes. */ |
761 | struct streamer_tree_cache_d *reader_cache; |
762 | |
763 | /* Cache of source code location. */ |
764 | lto_location_cache location_cache; |
765 | }; |
766 | |
767 | |
768 | /* In lto-section-in.cc */ |
769 | extern class lto_input_block * lto_create_simple_input_block ( |
770 | struct lto_file_decl_data *, |
771 | enum lto_section_type, const char **, size_t *); |
772 | extern void |
773 | lto_destroy_simple_input_block (struct lto_file_decl_data *, |
774 | enum lto_section_type, |
775 | class lto_input_block *, const char *, size_t); |
776 | extern void lto_set_in_hooks (struct lto_file_decl_data **, |
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, |
782 | const char *, int, size_t *, |
783 | bool decompress = false); |
784 | extern const char *lto_get_summary_section_data (struct lto_file_decl_data *, |
785 | enum lto_section_type, |
786 | size_t *); |
787 | extern const char *lto_get_raw_section_data (struct lto_file_decl_data *, |
788 | enum lto_section_type, |
789 | const char *, int, size_t *); |
790 | extern void lto_free_section_data (struct lto_file_decl_data *, |
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); |
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 *); |
804 | extern struct lto_in_decl_state *lto_get_function_in_decl_state ( |
805 | struct lto_file_decl_data *, tree); |
806 | extern void lto_free_function_in_decl_state (struct lto_in_decl_state *); |
807 | extern void lto_free_function_in_decl_state_for_node (symtab_node *); |
808 | extern void lto_section_overrun (class lto_input_block *) ATTRIBUTE_NORETURN; |
809 | extern void lto_value_range_error (const char *, |
810 | HOST_WIDE_INT, HOST_WIDE_INT, |
811 | HOST_WIDE_INT) ATTRIBUTE_NORETURN; |
812 | |
813 | /* In lto-section-out.cc */ |
814 | extern void lto_begin_section (const char *, bool); |
815 | extern void lto_end_section (void); |
816 | extern void lto_write_data (const void *, unsigned int); |
817 | extern void lto_write_raw_data (const void *, unsigned int); |
818 | extern void lto_write_stream (struct lto_output_stream *); |
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 *); |
829 | extern void lto_append_block (struct lto_output_stream *); |
830 | |
831 | |
832 | /* In lto-streamer.cc. */ |
833 | |
834 | /* Set when streaming LTO for offloading compiler. */ |
835 | extern bool lto_stream_offload_p; |
836 | |
837 | extern const char *lto_tag_name (enum LTO_tags); |
838 | extern char *lto_get_section_name (int, const char *, int, |
839 | struct lto_file_decl_data *); |
840 | extern void print_lto_report (const char *); |
841 | extern void lto_streamer_init (void); |
842 | extern bool gate_lto_out (void); |
843 | extern void lto_check_version (int, int, const char *); |
844 | extern void lto_streamer_hooks_init (void); |
845 | |
846 | /* In lto-streamer-in.cc */ |
847 | extern void lto_input_cgraph (struct lto_file_decl_data *, const char *); |
848 | extern void lto_reader_init (void); |
849 | extern void lto_free_file_name_hash (void); |
850 | extern void lto_input_function_body (struct lto_file_decl_data *, |
851 | struct cgraph_node *, |
852 | const char *); |
853 | extern void lto_input_variable_constructor (struct lto_file_decl_data *, |
854 | struct varpool_node *, |
855 | const char *); |
856 | extern void lto_input_constructors_and_inits (struct lto_file_decl_data *, |
857 | const char *); |
858 | extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int); |
859 | extern void lto_input_mode_table (struct lto_file_decl_data *); |
860 | extern class data_in *lto_data_in_create (struct lto_file_decl_data *, |
861 | const char *, unsigned, |
862 | vec<ld_plugin_symbol_resolution_t> ); |
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 *); |
866 | tree lto_input_tree_ref (class lto_input_block *, class data_in *, |
867 | struct function *, enum LTO_tags); |
868 | void lto_tag_check_set (enum LTO_tags, int, ...); |
869 | void lto_init_eh (void); |
870 | hashval_t lto_input_scc (class lto_input_block *, class data_in *, |
871 | unsigned *, unsigned *, bool); |
872 | tree lto_input_tree_1 (class lto_input_block *, class data_in *, |
873 | enum LTO_tags, hashval_t hash); |
874 | tree lto_input_tree (class lto_input_block *, class data_in *); |
875 | tree stream_read_tree_ref (class lto_input_block *, class data_in *); |
876 | |
877 | |
878 | /* In lto-streamer-out.cc */ |
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 *); |
882 | extern void lto_output_tree (struct output_block *, tree, bool, bool); |
883 | extern void stream_write_tree_ref (struct output_block *, tree); |
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 *); |
890 | extern void lto_output_toplevel_asms (void); |
891 | extern void produce_asm (struct output_block *ob, tree fn); |
892 | extern void lto_output (); |
893 | extern void produce_asm_for_decls (); |
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 *); |
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); |
903 | void lto_output_init_mode_table (void); |
904 | void lto_prepare_function_for_streaming (cgraph_node *); |
905 | |
906 | |
907 | /* In lto-cgraph.cc */ |
908 | extern bool asm_nodes_output; |
909 | lto_symtab_encoder_t lto_symtab_encoder_new (bool); |
910 | int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *); |
911 | void lto_symtab_encoder_delete (lto_symtab_encoder_t); |
912 | bool lto_symtab_encoder_delete_node (lto_symtab_encoder_t, symtab_node *); |
913 | bool lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t, |
914 | struct cgraph_node *); |
915 | bool lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t, |
916 | symtab_node *); |
917 | void lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t, |
918 | symtab_node *); |
919 | |
920 | bool lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t, |
921 | varpool_node *); |
922 | void output_symtab (void); |
923 | void input_symtab (void); |
924 | void output_offload_tables (void); |
925 | void input_offload_tables (bool); |
926 | bool referenced_from_other_partition_p (struct ipa_ref_list *, |
927 | lto_symtab_encoder_t); |
928 | bool reachable_from_other_partition_p (struct cgraph_node *, |
929 | lto_symtab_encoder_t); |
930 | bool referenced_from_this_partition_p (symtab_node *, |
931 | lto_symtab_encoder_t); |
932 | bool reachable_from_this_partition_p (struct cgraph_node *, |
933 | lto_symtab_encoder_t); |
934 | lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder); |
935 | void select_what_to_stream (void); |
936 | |
937 | /* In omp-general.cc. */ |
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 | |
943 | /* In options-save.cc. */ |
944 | void cl_target_option_stream_out (struct output_block *, struct bitpack_d *, |
945 | struct cl_target_option *); |
946 | |
947 | void cl_target_option_stream_in (class data_in *, |
948 | struct bitpack_d *, |
949 | struct cl_target_option *); |
950 | |
951 | void cl_optimization_stream_out (struct output_block *, |
952 | struct bitpack_d *, struct cl_optimization *); |
953 | |
954 | void cl_optimization_stream_in (class data_in *, |
955 | struct bitpack_d *, struct cl_optimization *); |
956 | |
957 | |
958 | |
959 | /* In lto-opts.cc. */ |
960 | extern void lto_write_options (void); |
961 | |
962 | |
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. */ |
971 | extern vec<lto_out_decl_state_ptr> lto_function_decl_states; |
972 | |
973 | /* Return true if LTO tag TAG corresponds to a tree code. */ |
974 | inline bool |
975 | lto_tag_is_tree_code_p (enum LTO_tags tag) |
976 | { |
977 | return tag > LTO_first_tree_tag && (unsigned) tag <= MAX_TREE_CODES; |
978 | } |
979 | |
980 | |
981 | /* Return true if LTO tag TAG corresponds to a gimple code. */ |
982 | inline bool |
983 | lto_tag_is_gimple_code_p (enum LTO_tags tag) |
984 | { |
985 | return (unsigned) tag >= LTO_first_gimple_tag |
986 | && (unsigned) tag |
987 | < LTO_first_gimple_tag + LAST_AND_UNUSED_GIMPLE_CODE; |
988 | } |
989 | |
990 | |
991 | /* Return the LTO tag corresponding to gimple code CODE. See enum |
992 | LTO_tags for details on the conversion. */ |
993 | inline enum LTO_tags |
994 | lto_gimple_code_to_tag (enum gimple_code code) |
995 | { |
996 | return (enum LTO_tags) ((unsigned) code + LTO_first_gimple_tag); |
997 | } |
998 | |
999 | |
1000 | /* Return the GIMPLE code corresponding to TAG. See enum LTO_tags for |
1001 | details on the conversion. */ |
1002 | inline enum gimple_code |
1003 | lto_tag_to_gimple_code (enum LTO_tags tag) |
1004 | { |
1005 | gcc_assert (lto_tag_is_gimple_code_p (tag)); |
1006 | return (enum gimple_code) ((unsigned) tag - LTO_first_gimple_tag); |
1007 | } |
1008 | |
1009 | |
1010 | /* Return the LTO tag corresponding to tree code CODE. See enum |
1011 | LTO_tags for details on the conversion. */ |
1012 | inline enum LTO_tags |
1013 | lto_tree_code_to_tag (enum tree_code code) |
1014 | { |
1015 | return (enum LTO_tags) ((unsigned) code + LTO_first_tree_tag); |
1016 | } |
1017 | |
1018 | |
1019 | /* Return the tree code corresponding to TAG. See enum LTO_tags for |
1020 | details on the conversion. */ |
1021 | inline enum tree_code |
1022 | lto_tag_to_tree_code (enum LTO_tags tag) |
1023 | { |
1024 | gcc_assert (lto_tag_is_tree_code_p (tag)); |
1025 | return (enum tree_code) ((unsigned) tag - LTO_first_tree_tag); |
1026 | } |
1027 | |
1028 | /* Check that tag ACTUAL == EXPECTED. */ |
1029 | inline void |
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]. */ |
1038 | inline void |
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 | |
1050 | /* Initialize an lto_out_decl_buffer ENCODER. */ |
1051 | inline void |
1052 | lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
1053 | { |
1054 | encoder->tree_hash_table = new hash_map<tree, unsigned> (251); |
1055 | encoder->trees.create (nelems: 0); |
1056 | } |
1057 | |
1058 | |
1059 | /* Destroy an lto_tree_ref_encoder ENCODER by freeing its contents. The |
1060 | memory used by ENCODER is not freed by this function. */ |
1061 | inline void |
1062 | lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
1063 | { |
1064 | /* Hash table may be delete already. */ |
1065 | delete encoder->tree_hash_table; |
1066 | encoder->tree_hash_table = NULL; |
1067 | encoder->trees.release (); |
1068 | } |
1069 | |
1070 | /* Return the number of trees encoded in ENCODER. */ |
1071 | inline unsigned int |
1072 | lto_tree_ref_encoder_size (struct lto_tree_ref_encoder *encoder) |
1073 | { |
1074 | return encoder->trees.length (); |
1075 | } |
1076 | |
1077 | /* Return the IDX-th tree in ENCODER. */ |
1078 | inline tree |
1079 | lto_tree_ref_encoder_get_tree (struct lto_tree_ref_encoder *encoder, |
1080 | unsigned int idx) |
1081 | { |
1082 | return encoder->trees[idx]; |
1083 | } |
1084 | |
1085 | /* Return number of encoded nodes in ENCODER. */ |
1086 | inline int |
1087 | lto_symtab_encoder_size (lto_symtab_encoder_t encoder) |
1088 | { |
1089 | return encoder->nodes.length (); |
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 | |
1098 | inline int |
1099 | lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder, |
1100 | symtab_node *node) |
1101 | { |
1102 | size_t *slot = encoder->map->get (k: node); |
1103 | return (slot && *slot ? *(slot) - 1 : LCC_NOT_FOUND); |
1104 | } |
1105 | |
1106 | /* Return true if iterator LSE points to nothing. */ |
1107 | inline bool |
1108 | lsei_end_p (lto_symtab_encoder_iterator lsei) |
1109 | { |
1110 | return lsei.index >= (unsigned)lto_symtab_encoder_size (encoder: lsei.encoder); |
1111 | } |
1112 | |
1113 | /* Advance iterator LSE. */ |
1114 | inline void |
1115 | lsei_next (lto_symtab_encoder_iterator *lsei) |
1116 | { |
1117 | lsei->index++; |
1118 | } |
1119 | |
1120 | /* Return the node pointed to by LSI. */ |
1121 | inline symtab_node * |
1122 | lsei_node (lto_symtab_encoder_iterator lsei) |
1123 | { |
1124 | return lsei.encoder->nodes[lsei.index].node; |
1125 | } |
1126 | |
1127 | /* Return the node pointed to by LSI. */ |
1128 | inline struct cgraph_node * |
1129 | lsei_cgraph_node (lto_symtab_encoder_iterator lsei) |
1130 | { |
1131 | return dyn_cast<cgraph_node *> (p: lsei.encoder->nodes[lsei.index].node); |
1132 | } |
1133 | |
1134 | /* Return the node pointed to by LSI. */ |
1135 | inline varpool_node * |
1136 | lsei_varpool_node (lto_symtab_encoder_iterator lsei) |
1137 | { |
1138 | return dyn_cast<varpool_node *> (p: lsei.encoder->nodes[lsei.index].node); |
1139 | } |
1140 | |
1141 | /* Return the cgraph node corresponding to REF using ENCODER. */ |
1142 | |
1143 | inline symtab_node * |
1144 | lto_symtab_encoder_deref (lto_symtab_encoder_t encoder, int ref) |
1145 | { |
1146 | if (ref == LCC_NOT_FOUND) |
1147 | return NULL; |
1148 | |
1149 | return encoder->nodes[ref].node; |
1150 | } |
1151 | |
1152 | /* Return an iterator to the first node in LSI. */ |
1153 | inline lto_symtab_encoder_iterator |
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. */ |
1164 | inline void |
1165 | lsei_next_in_partition (lto_symtab_encoder_iterator *lsei) |
1166 | { |
1167 | lsei_next (lsei); |
1168 | while (!lsei_end_p (lsei: *lsei) |
1169 | && !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (lsei: *lsei))) |
1170 | lsei_next (lsei); |
1171 | } |
1172 | |
1173 | /* Return an iterator to the first node in LSI. */ |
1174 | inline lto_symtab_encoder_iterator |
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: &lsei); |
1183 | |
1184 | return lsei; |
1185 | } |
1186 | |
1187 | /* Advance iterator LSE. */ |
1188 | inline void |
1189 | lsei_next_function_in_partition (lto_symtab_encoder_iterator *lsei) |
1190 | { |
1191 | lsei_next (lsei); |
1192 | while (!lsei_end_p (lsei: *lsei) |
1193 | && (!is_a <cgraph_node *> (p: lsei_node (lsei: *lsei)) |
1194 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (lsei: *lsei)))) |
1195 | lsei_next (lsei); |
1196 | } |
1197 | |
1198 | /* Return an iterator to the first node in LSI. */ |
1199 | inline lto_symtab_encoder_iterator |
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; |
1206 | if (!is_a <cgraph_node *> (p: lsei_node (lsei)) |
1207 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1208 | lsei_next_function_in_partition (lsei: &lsei); |
1209 | |
1210 | return lsei; |
1211 | } |
1212 | |
1213 | /* Advance iterator LSE. */ |
1214 | inline void |
1215 | lsei_next_variable_in_partition (lto_symtab_encoder_iterator *lsei) |
1216 | { |
1217 | lsei_next (lsei); |
1218 | while (!lsei_end_p (lsei: *lsei) |
1219 | && (!is_a <varpool_node *> (p: lsei_node (lsei: *lsei)) |
1220 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (lsei: *lsei)))) |
1221 | lsei_next (lsei); |
1222 | } |
1223 | |
1224 | /* Return an iterator to the first node in LSI. */ |
1225 | inline lto_symtab_encoder_iterator |
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; |
1232 | if (!is_a <varpool_node *> (p: lsei_node (lsei)) |
1233 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1234 | lsei_next_variable_in_partition (lsei: &lsei); |
1235 | |
1236 | return lsei; |
1237 | } |
1238 | |
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 | |
1248 | extern FILE *streamer_dump_file; |
1249 | |
1250 | #endif /* GCC_LTO_STREAMER_H */ |
1251 | |