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d7f09764 DN |
1 | /* Data structures and declarations used for reading and writing |
2 | GIMPLE to a file stream. | |
3 | ||
d1e082c2 | 4 | Copyright (C) 2009-2013 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" | |
4a8fb1a1 | 27 | #include "hash-table.h" |
d7f09764 DN |
28 | #include "tree.h" |
29 | #include "gimple.h" | |
30 | #include "target.h" | |
31 | #include "cgraph.h" | |
32 | #include "vec.h" | |
5c4f225f | 33 | #include "alloc-pool.h" |
db0bf14f | 34 | #include "gcov-io.h" |
f0efc7aa | 35 | #include "diagnostic.h" |
47c79d56 | 36 | |
d7f09764 DN |
37 | /* Define when debugging the LTO streamer. This causes the writer |
38 | to output the numeric value for the memory address of the tree node | |
39 | being emitted. When debugging a problem in the reader, check the | |
40 | original address that the writer was emitting using lto_orig_address_get. | |
41 | With this value, set a breakpoint in the writer (e.g., lto_output_tree) | |
42 | to trace how the faulty node is being emitted. */ | |
43 | /* #define LTO_STREAMER_DEBUG 1 */ | |
44 | ||
45 | /* The encoding for a function consists of the following sections: | |
46 | ||
47 | 1) The header. | |
48 | 2) FIELD_DECLS. | |
49 | 3) FUNCTION_DECLS. | |
50 | 4) global VAR_DECLS. | |
51 | 5) type_decls | |
52 | 6) types. | |
53 | 7) Names for the labels that have names | |
54 | 8) The SSA names. | |
55 | 9) The control flow graph. | |
56 | 10-11)Gimple for local decls. | |
57 | 12) Gimple for the function. | |
58 | 13) Strings. | |
59 | ||
60 | 1) THE HEADER. | |
61 | 2-6) THE GLOBAL DECLS AND TYPES. | |
62 | ||
63 | The global decls and types are encoded in the same way. For each | |
64 | entry, there is word with the offset within the section to the | |
65 | entry. | |
66 | ||
b8698a0f | 67 | 7) THE LABEL NAMES. |
d7f09764 DN |
68 | |
69 | Since most labels do not have names, this section my be of zero | |
70 | length. It consists of an array of string table references, one | |
71 | per label. In the lto code, the labels are given either | |
72 | positive or negative indexes. the positive ones have names and | |
73 | the negative ones do not. The positive index can be used to | |
74 | find the name in this array. | |
75 | ||
b8698a0f | 76 | 9) THE CFG. |
d7f09764 DN |
77 | |
78 | 10) Index into the local decls. Since local decls can have local | |
79 | decls inside them, they must be read in randomly in order to | |
b8698a0f | 80 | properly restore them. |
d7f09764 DN |
81 | |
82 | 11-12) GIMPLE FOR THE LOCAL DECLS AND THE FUNCTION BODY. | |
83 | ||
84 | The gimple consists of a set of records. | |
85 | ||
86 | THE FUNCTION | |
b8698a0f | 87 | |
d7f09764 DN |
88 | At the top level of (8) is the function. It consists of five |
89 | pieces: | |
90 | ||
91 | LTO_function - The tag. | |
92 | eh tree - This is all of the exception handling regions | |
93 | put out in a post order traversial of the | |
94 | tree. Siblings are output as lists terminated | |
95 | by a 0. The set of fields matches the fields | |
96 | defined in except.c. | |
97 | ||
98 | last_basic_block - in uleb128 form. | |
99 | ||
100 | basic blocks - This is the set of basic blocks. | |
101 | ||
102 | zero - The termination of the basic blocks. | |
103 | ||
104 | BASIC BLOCKS | |
105 | ||
106 | There are two forms of basic blocks depending on if they are | |
107 | empty or not. | |
108 | ||
109 | The basic block consists of: | |
110 | ||
111 | LTO_bb1 or LTO_bb0 - The tag. | |
112 | ||
113 | bb->index - the index in uleb128 form. | |
114 | ||
115 | #succs - The number of successors un uleb128 form. | |
116 | ||
117 | the successors - For each edge, a pair. The first of the | |
118 | pair is the index of the successor in | |
119 | uleb128 form and the second are the flags in | |
120 | uleb128 form. | |
121 | ||
122 | the statements - A gimple tree, as described above. | |
123 | These are only present for LTO_BB1. | |
124 | Following each statement is an optional | |
125 | exception handling record LTO_eh_region | |
126 | which contains the region number (for | |
127 | regions >= 0). | |
128 | ||
129 | zero - This is only present for LTO_BB1 and is used | |
130 | to terminate the statements and exception | |
131 | regions within this block. | |
132 | ||
133 | 12) STRINGS | |
134 | ||
135 | String are represented in the table as pairs, a length in ULEB128 | |
136 | form followed by the data for the string. */ | |
137 | ||
138 | /* The string that is the prefix on the section names we make for lto. | |
139 | For decls the DECL_ASSEMBLER_NAME is appended to make the section | |
140 | name for the functions and static_initializers. For other types of | |
141 | sections a '.' and the section type are appended. */ | |
142 | #define LTO_SECTION_NAME_PREFIX ".gnu.lto_" | |
143 | ||
8529e24b | 144 | #define LTO_major_version 2 |
9713d329 | 145 | #define LTO_minor_version 2 |
d7f09764 DN |
146 | |
147 | typedef unsigned char lto_decl_flags_t; | |
148 | ||
149 | ||
d7f09764 DN |
150 | /* Tags representing the various IL objects written to the bytecode file |
151 | (GIMPLE statements, basic blocks, EH regions, tree nodes, etc). | |
152 | ||
153 | NOTE, when adding new LTO tags, also update lto_tag_name. */ | |
b8698a0f | 154 | enum LTO_tags |
d7f09764 DN |
155 | { |
156 | LTO_null = 0, | |
157 | ||
15d16c8a RB |
158 | /* Special for streamer. Reference to previously-streamed node. */ |
159 | LTO_tree_pickle_reference, | |
160 | ||
d7f09764 DN |
161 | /* Reserve enough entries to fit all the tree and gimple codes handled |
162 | by the streamer. This guarantees that: | |
163 | ||
164 | 1- Given a tree code C: | |
165 | enum LTO_tags tag == C + 1 | |
166 | ||
167 | 2- Given a gimple code C: | |
168 | enum LTO_tags tag == C + NUM_TREE_CODES + 1 | |
169 | ||
170 | Conversely, to map between LTO tags and tree/gimple codes, the | |
171 | reverse operation must be applied. */ | |
07233947 | 172 | LTO_bb0 = 1 + MAX_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE, |
d7f09764 DN |
173 | LTO_bb1, |
174 | ||
175 | /* EH region holding the previous statement. */ | |
176 | LTO_eh_region, | |
177 | ||
178 | /* An MD or NORMAL builtin. Only the code and class are streamed out. */ | |
179 | LTO_builtin_decl, | |
180 | ||
c61f8c3b RG |
181 | /* Shared INTEGER_CST node. */ |
182 | LTO_integer_cst, | |
183 | ||
d7f09764 DN |
184 | /* Function body. */ |
185 | LTO_function, | |
186 | ||
187 | /* EH table. */ | |
188 | LTO_eh_table, | |
189 | ||
190 | /* EH region types. These mirror enum eh_region_type. */ | |
191 | LTO_ert_cleanup, | |
192 | LTO_ert_try, | |
193 | LTO_ert_allowed_exceptions, | |
194 | LTO_ert_must_not_throw, | |
195 | ||
196 | /* EH landing pad. */ | |
197 | LTO_eh_landing_pad, | |
198 | ||
199 | /* EH try/catch node. */ | |
200 | LTO_eh_catch, | |
201 | ||
ee03e71d RB |
202 | /* Special for global streamer. A blob of unnamed tree nodes. */ |
203 | LTO_tree_scc, | |
204 | ||
d7f09764 DN |
205 | /* References to indexable tree nodes. These objects are stored in |
206 | tables that are written separately from the function bodies that | |
207 | reference them. This way they can be instantiated even when the | |
208 | referencing functions aren't (e.g., during WPA) and it also allows | |
209 | functions to be copied from one file to another without having | |
210 | to unpickle the body first (the references are location | |
211 | independent). | |
212 | ||
213 | NOTE, do not regroup these values as the grouping is exposed | |
214 | in the range checks done in lto_input_tree. */ | |
215 | LTO_field_decl_ref, /* Do not change. */ | |
216 | LTO_function_decl_ref, | |
217 | LTO_label_decl_ref, | |
218 | LTO_namespace_decl_ref, | |
219 | LTO_result_decl_ref, | |
220 | LTO_ssa_name_ref, | |
221 | LTO_type_decl_ref, | |
222 | LTO_type_ref, | |
223 | LTO_const_decl_ref, | |
224 | LTO_imported_decl_ref, | |
6be14c0e | 225 | LTO_translation_unit_decl_ref, |
d7f09764 DN |
226 | LTO_global_decl_ref, /* Do not change. */ |
227 | ||
228 | /* This tag must always be last. */ | |
229 | LTO_NUM_TAGS | |
230 | }; | |
231 | ||
232 | ||
233 | /* Set of section types that are in an LTO file. This list will grow | |
234 | as the number of IPA passes grows since each IPA pass will need its | |
235 | own section type to store its summary information. | |
236 | ||
237 | When adding a new section type, you must also extend the | |
238 | LTO_SECTION_NAME array in lto-section-in.c. */ | |
239 | enum lto_section_type | |
240 | { | |
241 | LTO_section_decls = 0, | |
242 | LTO_section_function_body, | |
243 | LTO_section_static_initializer, | |
ab96cc5b | 244 | LTO_section_symtab, |
369451ec | 245 | LTO_section_refs, |
49f836ba | 246 | LTO_section_asm, |
fb3f88cc | 247 | LTO_section_jump_functions, |
d7f09764 DN |
248 | LTO_section_ipa_pure_const, |
249 | LTO_section_ipa_reference, | |
0208f7da | 250 | LTO_section_ipa_profile, |
ab96cc5b | 251 | LTO_section_symtab_nodes, |
d7f09764 | 252 | LTO_section_opts, |
922f15c2 | 253 | LTO_section_cgraph_opt_sum, |
10a5dd5d | 254 | LTO_section_inline_summary, |
2c9561b5 | 255 | LTO_section_ipcp_transform, |
d7f09764 DN |
256 | LTO_N_SECTION_TYPES /* Must be last. */ |
257 | }; | |
258 | ||
259 | /* Indices to the various function, type and symbol streams. */ | |
260 | typedef enum | |
261 | { | |
262 | LTO_DECL_STREAM_TYPE = 0, /* Must be first. */ | |
263 | LTO_DECL_STREAM_FIELD_DECL, | |
264 | LTO_DECL_STREAM_FN_DECL, | |
265 | LTO_DECL_STREAM_VAR_DECL, | |
266 | LTO_DECL_STREAM_TYPE_DECL, | |
267 | LTO_DECL_STREAM_NAMESPACE_DECL, | |
268 | LTO_DECL_STREAM_LABEL_DECL, | |
269 | LTO_N_DECL_STREAMS | |
270 | } lto_decl_stream_e_t; | |
271 | ||
272 | typedef enum ld_plugin_symbol_resolution ld_plugin_symbol_resolution_t; | |
d7f09764 DN |
273 | |
274 | ||
275 | /* Macro to define convenience functions for type and decl streams | |
b8698a0f | 276 | in lto_file_decl_data. */ |
d7f09764 DN |
277 | #define DEFINE_DECL_STREAM_FUNCS(UPPER_NAME, name) \ |
278 | static inline tree \ | |
279 | lto_file_decl_data_get_ ## name (struct lto_file_decl_data *data, \ | |
280 | unsigned int idx) \ | |
281 | { \ | |
282 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
283 | gcc_assert (idx < state->streams[LTO_DECL_STREAM_## UPPER_NAME].size); \ | |
284 | return state->streams[LTO_DECL_STREAM_## UPPER_NAME].trees[idx]; \ | |
285 | } \ | |
286 | \ | |
287 | static inline unsigned int \ | |
288 | lto_file_decl_data_num_ ## name ## s (struct lto_file_decl_data *data) \ | |
289 | { \ | |
290 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
291 | return state->streams[LTO_DECL_STREAM_## UPPER_NAME].size; \ | |
292 | } | |
293 | ||
294 | ||
295 | /* Return a char pointer to the start of a data stream for an lto pass | |
296 | or function. The first parameter is the file data that contains | |
297 | the information. The second parameter is the type of information | |
298 | to be obtained. The third parameter is the name of the function | |
b8698a0f | 299 | and is only used when finding a function body; otherwise it is |
d7f09764 | 300 | NULL. The fourth parameter is the length of the data returned. */ |
b8698a0f | 301 | typedef const char* (lto_get_section_data_f) (struct lto_file_decl_data *, |
d7f09764 | 302 | enum lto_section_type, |
b8698a0f | 303 | const char *, |
d7f09764 DN |
304 | size_t *); |
305 | ||
306 | /* Return the data found from the above call. The first three | |
307 | parameters are the same as above. The fourth parameter is the data | |
073a8998 | 308 | itself and the fifth is the length of the data. */ |
b8698a0f | 309 | typedef void (lto_free_section_data_f) (struct lto_file_decl_data *, |
d7f09764 DN |
310 | enum lto_section_type, |
311 | const char *, | |
312 | const char *, | |
313 | size_t); | |
314 | ||
d7f09764 | 315 | /* Structure used as buffer for reading an LTO file. */ |
b8698a0f | 316 | struct lto_input_block |
d7f09764 DN |
317 | { |
318 | const char *data; | |
319 | unsigned int p; | |
320 | unsigned int len; | |
321 | }; | |
322 | ||
323 | #define LTO_INIT_INPUT_BLOCK(BASE,D,P,L) \ | |
324 | do { \ | |
325 | BASE.data = D; \ | |
326 | BASE.p = P; \ | |
327 | BASE.len = L; \ | |
328 | } while (0) | |
329 | ||
330 | #define LTO_INIT_INPUT_BLOCK_PTR(BASE,D,P,L) \ | |
331 | do { \ | |
332 | BASE->data = D; \ | |
333 | BASE->p = P; \ | |
334 | BASE->len = L; \ | |
335 | } while (0) | |
336 | ||
337 | ||
338 | /* The is the first part of the record for a function or constructor | |
339 | in the .o file. */ | |
340 | struct lto_header | |
341 | { | |
342 | int16_t major_version; | |
343 | int16_t minor_version; | |
d7f09764 DN |
344 | }; |
345 | ||
346 | /* The header for a function body. */ | |
347 | struct lto_function_header | |
348 | { | |
349 | /* The header for all types of sections. */ | |
350 | struct lto_header lto_header; | |
351 | ||
352 | /* Number of labels with names. */ | |
353 | int32_t num_named_labels; | |
354 | ||
355 | /* Number of labels without names. */ | |
356 | int32_t num_unnamed_labels; | |
357 | ||
358 | /* Size compressed or 0 if not compressed. */ | |
359 | int32_t compressed_size; | |
360 | ||
361 | /* Size of names for named labels. */ | |
362 | int32_t named_label_size; | |
363 | ||
364 | /* Size of the cfg. */ | |
365 | int32_t cfg_size; | |
366 | ||
367 | /* Size of main gimple body of function. */ | |
368 | int32_t main_size; | |
369 | ||
370 | /* Size of the string table. */ | |
371 | int32_t string_size; | |
372 | }; | |
373 | ||
374 | ||
375 | /* Structure describing a symbol section. */ | |
376 | struct lto_decl_header | |
377 | { | |
378 | /* The header for all types of sections. */ | |
379 | struct lto_header lto_header; | |
380 | ||
381 | /* Size of region for decl state. */ | |
382 | int32_t decl_state_size; | |
383 | ||
384 | /* Number of nodes in globals stream. */ | |
385 | int32_t num_nodes; | |
386 | ||
387 | /* Size of region for expressions, decls, types, etc. */ | |
388 | int32_t main_size; | |
389 | ||
390 | /* Size of the string table. */ | |
391 | int32_t string_size; | |
392 | }; | |
393 | ||
394 | ||
49f836ba JB |
395 | /* Structure describing top level asm()s. */ |
396 | struct lto_asm_header | |
397 | { | |
398 | /* The header for all types of sections. */ | |
399 | struct lto_header lto_header; | |
400 | ||
401 | /* Size compressed or 0 if not compressed. */ | |
402 | int32_t compressed_size; | |
403 | ||
404 | /* Size of region for expressions, decls, types, etc. */ | |
405 | int32_t main_size; | |
406 | ||
407 | /* Size of the string table. */ | |
408 | int32_t string_size; | |
409 | }; | |
410 | ||
411 | ||
d7f09764 DN |
412 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
413 | struct lto_stats_d | |
414 | { | |
415 | unsigned HOST_WIDE_INT num_input_cgraph_nodes; | |
7b99cca4 | 416 | unsigned HOST_WIDE_INT num_output_symtab_nodes; |
d7f09764 DN |
417 | unsigned HOST_WIDE_INT num_input_files; |
418 | unsigned HOST_WIDE_INT num_output_files; | |
419 | unsigned HOST_WIDE_INT num_cgraph_partitions; | |
420 | unsigned HOST_WIDE_INT section_size[LTO_N_SECTION_TYPES]; | |
421 | unsigned HOST_WIDE_INT num_function_bodies; | |
422 | unsigned HOST_WIDE_INT num_trees[NUM_TREE_CODES]; | |
423 | unsigned HOST_WIDE_INT num_output_il_bytes; | |
424 | unsigned HOST_WIDE_INT num_compressed_il_bytes; | |
425 | unsigned HOST_WIDE_INT num_input_il_bytes; | |
426 | unsigned HOST_WIDE_INT num_uncompressed_il_bytes; | |
ee03e71d RB |
427 | unsigned HOST_WIDE_INT num_tree_bodies_output; |
428 | unsigned HOST_WIDE_INT num_pickle_refs_output; | |
d7f09764 DN |
429 | }; |
430 | ||
7b99cca4 JH |
431 | /* Entry of LTO symtab encoder. */ |
432 | typedef struct | |
433 | { | |
434 | symtab_node node; | |
435 | /* Is the node in this partition (i.e. ltrans of this partition will | |
436 | be responsible for outputting it)? */ | |
437 | unsigned int in_partition:1; | |
438 | /* Do we encode body in this partition? */ | |
439 | unsigned int body:1; | |
440 | /* Do we encode initializer in this partition? | |
441 | For example the readonly variable initializers are encoded to aid | |
442 | constant folding even if they are not in the partition. */ | |
443 | unsigned int initializer:1; | |
444 | } lto_encoder_entry; | |
445 | ||
7b99cca4 | 446 | |
d7f09764 | 447 | /* Encoder data structure used to stream callgraph nodes. */ |
7380e6ef | 448 | struct lto_symtab_encoder_d |
d7f09764 | 449 | { |
9771b263 | 450 | vec<lto_encoder_entry> nodes; |
7b99cca4 | 451 | pointer_map_t *map; |
2f41ecf5 | 452 | }; |
7380e6ef JH |
453 | |
454 | typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t; | |
2f41ecf5 | 455 | |
f27c1867 JH |
456 | /* Iterator structure for cgraph node sets. */ |
457 | typedef struct | |
703e95cf | 458 | { |
f27c1867 JH |
459 | lto_symtab_encoder_t encoder; |
460 | unsigned index; | |
461 | } lto_symtab_encoder_iterator; | |
462 | ||
463 | ||
464 | ||
703e95cf | 465 | |
d7f09764 | 466 | /* Mapping from indices to trees. */ |
49ba8180 | 467 | struct GTY(()) lto_tree_ref_table |
d7f09764 DN |
468 | { |
469 | /* Array of referenced trees . */ | |
49ba8180 | 470 | tree * GTY((length ("%h.size"))) trees; |
d7f09764 DN |
471 | |
472 | /* Size of array. */ | |
473 | unsigned int size; | |
474 | }; | |
475 | ||
476 | ||
477 | /* Mapping between trees and slots in an array. */ | |
478 | struct lto_decl_slot | |
479 | { | |
480 | tree t; | |
481 | int slot_num; | |
482 | }; | |
483 | ||
484 | ||
485 | /* The lto_tree_ref_encoder struct is used to encode trees into indices. */ | |
486 | ||
487 | struct lto_tree_ref_encoder | |
488 | { | |
489 | htab_t tree_hash_table; /* Maps pointers to indices. */ | |
490 | unsigned int next_index; /* Next available index. */ | |
9771b263 | 491 | vec<tree> trees; /* Maps indices to pointers. */ |
d7f09764 DN |
492 | }; |
493 | ||
494 | ||
495 | /* Structure to hold states of input scope. */ | |
49ba8180 | 496 | struct GTY(()) lto_in_decl_state |
d7f09764 DN |
497 | { |
498 | /* Array of lto_in_decl_buffers to store type and decls streams. */ | |
499 | struct lto_tree_ref_table streams[LTO_N_DECL_STREAMS]; | |
500 | ||
501 | /* If this in-decl state is associated with a function. FN_DECL | |
502 | point to the FUNCTION_DECL. */ | |
503 | tree fn_decl; | |
504 | }; | |
505 | ||
506 | typedef struct lto_in_decl_state *lto_in_decl_state_ptr; | |
507 | ||
508 | ||
509 | /* The structure that holds all of the vectors of global types, | |
510 | decls and cgraph nodes used in the serialization of this file. */ | |
511 | struct lto_out_decl_state | |
512 | { | |
513 | /* The buffers contain the sets of decls of various kinds and types we have | |
514 | seen so far and the indexes assigned to them. */ | |
515 | struct lto_tree_ref_encoder streams[LTO_N_DECL_STREAMS]; | |
516 | ||
517 | /* Encoder for cgraph nodes. */ | |
7380e6ef | 518 | lto_symtab_encoder_t symtab_node_encoder; |
2f41ecf5 | 519 | |
d7f09764 DN |
520 | /* If this out-decl state belongs to a function, fn_decl points to that |
521 | function. Otherwise, it is NULL. */ | |
522 | tree fn_decl; | |
523 | }; | |
524 | ||
525 | typedef struct lto_out_decl_state *lto_out_decl_state_ptr; | |
526 | ||
d7f09764 | 527 | |
aed7d7cf AK |
528 | /* Compact representation of a index <-> resolution pair. Unpacked to an |
529 | vector later. */ | |
530 | struct res_pair | |
531 | { | |
532 | ld_plugin_symbol_resolution_t res; | |
533 | unsigned index; | |
534 | }; | |
535 | typedef struct res_pair res_pair; | |
536 | ||
aed7d7cf | 537 | |
d7f09764 DN |
538 | /* One of these is allocated for each object file that being compiled |
539 | by lto. This structure contains the tables that are needed by the | |
540 | serialized functions and ipa passes to connect themselves to the | |
541 | global types and decls as they are reconstituted. */ | |
49ba8180 | 542 | struct GTY(()) lto_file_decl_data |
d7f09764 DN |
543 | { |
544 | /* Decl state currently used. */ | |
545 | struct lto_in_decl_state *current_decl_state; | |
546 | ||
547 | /* Decl state corresponding to regions outside of any functions | |
548 | in the compilation unit. */ | |
549 | struct lto_in_decl_state *global_decl_state; | |
550 | ||
551 | /* Table of cgraph nodes present in this file. */ | |
7380e6ef | 552 | lto_symtab_encoder_t GTY((skip)) symtab_node_encoder; |
2f41ecf5 | 553 | |
d7f09764 | 554 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 555 | htab_t GTY((param_is (struct lto_in_decl_state))) function_decl_states; |
d7f09764 DN |
556 | |
557 | /* The .o file that these offsets relate to. */ | |
49ba8180 | 558 | const char *GTY((skip)) file_name; |
d7f09764 | 559 | |
d7f09764 | 560 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 561 | htab_t GTY((skip)) section_hash_table; |
d7f09764 DN |
562 | |
563 | /* Hash new name of renamed global declaration to its original name. */ | |
49ba8180 | 564 | htab_t GTY((skip)) renaming_hash_table; |
73ce4d1e AK |
565 | |
566 | /* Linked list used temporarily in reader */ | |
567 | struct lto_file_decl_data *next; | |
568 | ||
569 | /* Sub ID for merged objects. */ | |
dde8b360 | 570 | unsigned HOST_WIDE_INT id; |
73ce4d1e AK |
571 | |
572 | /* Symbol resolutions for this file */ | |
9771b263 | 573 | vec<res_pair> GTY((skip)) respairs; |
aed7d7cf | 574 | unsigned max_index; |
db0bf14f JH |
575 | |
576 | struct gcov_ctr_summary GTY((skip)) profile_info; | |
bbf9ad07 JH |
577 | |
578 | /* Map assigning declarations their resolutions. */ | |
579 | pointer_map_t * GTY((skip)) resolution_map; | |
d7f09764 DN |
580 | }; |
581 | ||
a9429e29 LB |
582 | typedef struct lto_file_decl_data *lto_file_decl_data_ptr; |
583 | ||
d7f09764 DN |
584 | struct lto_char_ptr_base |
585 | { | |
586 | char *ptr; | |
587 | }; | |
588 | ||
589 | /* An incore byte stream to buffer the various parts of the function. | |
590 | The entire structure should be zeroed when created. The record | |
591 | consists of a set of blocks. The first sizeof (ptr) bytes are used | |
592 | as a chain, and the rest store the bytes to be written. */ | |
593 | struct lto_output_stream | |
594 | { | |
595 | /* The pointer to the first block in the stream. */ | |
596 | struct lto_char_ptr_base * first_block; | |
597 | ||
598 | /* The pointer to the last and current block in the stream. */ | |
599 | struct lto_char_ptr_base * current_block; | |
600 | ||
601 | /* The pointer to where the next char should be written. */ | |
602 | char * current_pointer; | |
603 | ||
604 | /* The number of characters left in the current block. */ | |
605 | unsigned int left_in_block; | |
606 | ||
607 | /* The block size of the last block allocated. */ | |
608 | unsigned int block_size; | |
609 | ||
610 | /* The total number of characters written. */ | |
611 | unsigned int total_size; | |
612 | }; | |
613 | ||
614 | /* The is the first part of the record in an LTO file for many of the | |
615 | IPA passes. */ | |
616 | struct lto_simple_header | |
617 | { | |
618 | /* The header for all types of sections. */ | |
619 | struct lto_header lto_header; | |
620 | ||
621 | /* Size of main gimple body of function. */ | |
622 | int32_t main_size; | |
623 | ||
624 | /* Size of main stream when compressed. */ | |
625 | int32_t compressed_size; | |
626 | }; | |
627 | ||
628 | /* A simple output block. This can be used for simple IPA passes that | |
629 | do not need more than one stream. */ | |
630 | struct lto_simple_output_block | |
631 | { | |
632 | enum lto_section_type section_type; | |
633 | struct lto_out_decl_state *decl_state; | |
634 | ||
635 | /* The stream that the main tree codes are written to. */ | |
636 | struct lto_output_stream *main_stream; | |
637 | }; | |
638 | ||
4a8fb1a1 LC |
639 | /* String hashing. */ |
640 | ||
641 | struct string_slot | |
642 | { | |
643 | const char *s; | |
644 | int len; | |
645 | unsigned int slot_num; | |
646 | }; | |
647 | ||
648 | /* Hashtable helpers. */ | |
649 | ||
650 | struct string_slot_hasher : typed_noop_remove <string_slot> | |
651 | { | |
652 | typedef string_slot value_type; | |
653 | typedef string_slot compare_type; | |
654 | static inline hashval_t hash (const value_type *); | |
655 | static inline bool equal (const value_type *, const compare_type *); | |
656 | }; | |
657 | ||
658 | /* Returns a hash code for DS. Adapted from libiberty's htab_hash_string | |
659 | to support strings that may not end in '\0'. */ | |
660 | ||
661 | inline hashval_t | |
662 | string_slot_hasher::hash (const value_type *ds) | |
663 | { | |
664 | hashval_t r = ds->len; | |
665 | int i; | |
666 | ||
667 | for (i = 0; i < ds->len; i++) | |
668 | r = r * 67 + (unsigned)ds->s[i] - 113; | |
669 | return r; | |
670 | } | |
671 | ||
672 | /* Returns nonzero if DS1 and DS2 are equal. */ | |
673 | ||
674 | inline bool | |
675 | string_slot_hasher::equal (const value_type *ds1, const compare_type *ds2) | |
676 | { | |
677 | if (ds1->len == ds2->len) | |
678 | return memcmp (ds1->s, ds2->s, ds1->len) == 0; | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
d7f09764 DN |
683 | /* Data structure holding all the data and descriptors used when writing |
684 | an LTO file. */ | |
685 | struct output_block | |
686 | { | |
687 | enum lto_section_type section_type; | |
688 | struct lto_out_decl_state *decl_state; | |
689 | ||
690 | /* The stream that the main tree codes are written to. */ | |
691 | struct lto_output_stream *main_stream; | |
692 | ||
693 | /* The stream that contains the string table. */ | |
694 | struct lto_output_stream *string_stream; | |
695 | ||
696 | /* The stream that contains the cfg. */ | |
697 | struct lto_output_stream *cfg_stream; | |
698 | ||
699 | /* The hash table that contains the set of strings we have seen so | |
700 | far and the indexes assigned to them. */ | |
4a8fb1a1 | 701 | hash_table <string_slot_hasher> string_hash_table; |
d7f09764 DN |
702 | |
703 | /* The current cgraph_node that we are currently serializing. Null | |
704 | if we are serializing something else. */ | |
705 | struct cgraph_node *cgraph_node; | |
706 | ||
707 | /* These are the last file and line that were seen in the stream. | |
708 | If the current node differs from these, it needs to insert | |
709 | something into the stream and fix these up. */ | |
710 | const char *current_file; | |
711 | int current_line; | |
712 | int current_col; | |
713 | ||
714 | /* True if writing globals and types. */ | |
715 | bool global; | |
716 | ||
717 | /* Cache of nodes written in this section. */ | |
412288f1 | 718 | struct streamer_tree_cache_d *writer_cache; |
fac009a8 JH |
719 | |
720 | /* All data persistent across whole duration of output block | |
721 | can go here. */ | |
722 | struct obstack obstack; | |
d7f09764 DN |
723 | }; |
724 | ||
725 | ||
726 | /* Data and descriptors used when reading from an LTO file. */ | |
727 | struct data_in | |
728 | { | |
729 | /* The global decls and types. */ | |
730 | struct lto_file_decl_data *file_data; | |
731 | ||
732 | /* All of the labels. */ | |
733 | tree *labels; | |
734 | ||
735 | /* The string table. */ | |
736 | const char *strings; | |
737 | ||
738 | /* The length of the string table. */ | |
739 | unsigned int strings_len; | |
740 | ||
741 | /* Number of named labels. Used to find the index of unnamed labels | |
742 | since they share space with the named labels. */ | |
b8698a0f | 743 | unsigned int num_named_labels; |
d7f09764 DN |
744 | |
745 | /* Number of unnamed labels. */ | |
746 | unsigned int num_unnamed_labels; | |
747 | ||
d7f09764 | 748 | /* Maps each reference number to the resolution done by the linker. */ |
9771b263 | 749 | vec<ld_plugin_symbol_resolution_t> globals_resolution; |
d7f09764 DN |
750 | |
751 | /* Cache of pickled nodes. */ | |
412288f1 | 752 | struct streamer_tree_cache_d *reader_cache; |
d7f09764 DN |
753 | }; |
754 | ||
755 | ||
756 | /* In lto-section-in.c */ | |
757 | extern struct lto_input_block * lto_create_simple_input_block ( | |
b8698a0f | 758 | struct lto_file_decl_data *, |
d7f09764 DN |
759 | enum lto_section_type, const char **, size_t *); |
760 | extern void | |
b8698a0f | 761 | lto_destroy_simple_input_block (struct lto_file_decl_data *, |
d7f09764 DN |
762 | enum lto_section_type, |
763 | struct lto_input_block *, const char *, size_t); | |
b8698a0f | 764 | extern void lto_set_in_hooks (struct lto_file_decl_data **, |
d7f09764 DN |
765 | lto_get_section_data_f *, |
766 | lto_free_section_data_f *); | |
767 | extern struct lto_file_decl_data **lto_get_file_decl_data (void); | |
768 | extern const char *lto_get_section_data (struct lto_file_decl_data *, | |
769 | enum lto_section_type, | |
770 | const char *, size_t *); | |
771 | extern void lto_free_section_data (struct lto_file_decl_data *, | |
772 | enum lto_section_type, | |
773 | const char *, const char *, size_t); | |
d7f09764 DN |
774 | extern htab_t lto_create_renaming_table (void); |
775 | extern void lto_record_renamed_decl (struct lto_file_decl_data *, | |
776 | const char *, const char *); | |
777 | extern const char *lto_get_decl_name_mapping (struct lto_file_decl_data *, | |
778 | const char *); | |
779 | extern struct lto_in_decl_state *lto_new_in_decl_state (void); | |
780 | extern void lto_delete_in_decl_state (struct lto_in_decl_state *); | |
781 | extern hashval_t lto_hash_in_decl_state (const void *); | |
782 | extern int lto_eq_in_decl_state (const void *, const void *); | |
783 | extern struct lto_in_decl_state *lto_get_function_in_decl_state ( | |
784 | struct lto_file_decl_data *, tree); | |
bc0fe8cb | 785 | extern void lto_section_overrun (struct lto_input_block *) ATTRIBUTE_NORETURN; |
f242c0a5 JH |
786 | extern void lto_value_range_error (const char *, |
787 | HOST_WIDE_INT, HOST_WIDE_INT, | |
788 | HOST_WIDE_INT) ATTRIBUTE_NORETURN; | |
d7f09764 DN |
789 | |
790 | /* In lto-section-out.c */ | |
791 | extern hashval_t lto_hash_decl_slot_node (const void *); | |
792 | extern int lto_eq_decl_slot_node (const void *, const void *); | |
793 | extern hashval_t lto_hash_type_slot_node (const void *); | |
794 | extern int lto_eq_type_slot_node (const void *, const void *); | |
795 | extern void lto_begin_section (const char *, bool); | |
796 | extern void lto_end_section (void); | |
797 | extern void lto_write_stream (struct lto_output_stream *); | |
d7f09764 DN |
798 | extern void lto_output_data_stream (struct lto_output_stream *, const void *, |
799 | size_t); | |
d7f09764 DN |
800 | extern bool lto_output_decl_index (struct lto_output_stream *, |
801 | struct lto_tree_ref_encoder *, | |
802 | tree, unsigned int *); | |
803 | extern void lto_output_field_decl_index (struct lto_out_decl_state *, | |
804 | struct lto_output_stream *, tree); | |
805 | extern void lto_output_fn_decl_index (struct lto_out_decl_state *, | |
806 | struct lto_output_stream *, tree); | |
807 | extern void lto_output_namespace_decl_index (struct lto_out_decl_state *, | |
808 | struct lto_output_stream *, tree); | |
809 | extern void lto_output_var_decl_index (struct lto_out_decl_state *, | |
810 | struct lto_output_stream *, tree); | |
811 | extern void lto_output_type_decl_index (struct lto_out_decl_state *, | |
812 | struct lto_output_stream *, tree); | |
813 | extern void lto_output_type_ref_index (struct lto_out_decl_state *, | |
814 | struct lto_output_stream *, tree); | |
815 | extern struct lto_simple_output_block *lto_create_simple_output_block ( | |
816 | enum lto_section_type); | |
817 | extern void lto_destroy_simple_output_block (struct lto_simple_output_block *); | |
818 | extern struct lto_out_decl_state *lto_new_out_decl_state (void); | |
819 | extern void lto_delete_out_decl_state (struct lto_out_decl_state *); | |
820 | extern struct lto_out_decl_state *lto_get_out_decl_state (void); | |
821 | extern void lto_push_out_decl_state (struct lto_out_decl_state *); | |
822 | extern struct lto_out_decl_state *lto_pop_out_decl_state (void); | |
823 | extern void lto_record_function_out_decl_state (tree, | |
824 | struct lto_out_decl_state *); | |
bc0fe8cb | 825 | extern void lto_append_block (struct lto_output_stream *); |
d7f09764 DN |
826 | |
827 | ||
828 | /* In lto-streamer.c. */ | |
829 | extern const char *lto_tag_name (enum LTO_tags); | |
830 | extern bitmap lto_bitmap_alloc (void); | |
831 | extern void lto_bitmap_free (bitmap); | |
73ce4d1e | 832 | extern char *lto_get_section_name (int, const char *, struct lto_file_decl_data *); |
b8f4e58f | 833 | extern void print_lto_report (const char *); |
d7f09764 DN |
834 | extern void lto_streamer_init (void); |
835 | extern bool gate_lto_out (void); | |
836 | #ifdef LTO_STREAMER_DEBUG | |
837 | extern void lto_orig_address_map (tree, intptr_t); | |
838 | extern intptr_t lto_orig_address_get (tree); | |
839 | extern void lto_orig_address_remove (tree); | |
840 | #endif | |
841 | extern void lto_check_version (int, int); | |
47c79d56 | 842 | extern void lto_streamer_hooks_init (void); |
d7f09764 DN |
843 | |
844 | /* In lto-streamer-in.c */ | |
d7f09764 | 845 | extern void lto_input_cgraph (struct lto_file_decl_data *, const char *); |
47c79d56 | 846 | extern void lto_reader_init (void); |
d7f09764 DN |
847 | extern void lto_input_function_body (struct lto_file_decl_data *, tree, |
848 | const char *); | |
849 | extern void lto_input_constructors_and_inits (struct lto_file_decl_data *, | |
850 | const char *); | |
398f05da | 851 | extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int); |
d7f09764 DN |
852 | extern struct data_in *lto_data_in_create (struct lto_file_decl_data *, |
853 | const char *, unsigned, | |
9771b263 | 854 | vec<ld_plugin_symbol_resolution_t> ); |
d7f09764 | 855 | extern void lto_data_in_delete (struct data_in *); |
a183b5c7 | 856 | extern void lto_input_data_block (struct lto_input_block *, void *, size_t); |
7cb7d208 | 857 | location_t lto_input_location (struct bitpack_d *, struct data_in *); |
f0efc7aa DN |
858 | tree lto_input_tree_ref (struct lto_input_block *, struct data_in *, |
859 | struct function *, enum LTO_tags); | |
860 | void lto_tag_check_set (enum LTO_tags, int, ...); | |
861 | void lto_init_eh (void); | |
ee03e71d RB |
862 | hashval_t lto_input_scc (struct lto_input_block *, struct data_in *, |
863 | unsigned *, unsigned *); | |
864 | tree lto_input_tree_1 (struct lto_input_block *, struct data_in *, | |
865 | enum LTO_tags, hashval_t hash); | |
b9393656 | 866 | tree lto_input_tree (struct lto_input_block *, struct data_in *); |
d7f09764 DN |
867 | |
868 | ||
869 | /* In lto-streamer-out.c */ | |
870 | extern void lto_register_decl_definition (tree, struct lto_file_decl_data *); | |
871 | extern struct output_block *create_output_block (enum lto_section_type); | |
872 | extern void destroy_output_block (struct output_block *); | |
7e54c608 | 873 | extern void lto_output_tree (struct output_block *, tree, bool, bool); |
49f836ba | 874 | extern void lto_output_toplevel_asms (void); |
fb3f88cc | 875 | extern void produce_asm (struct output_block *ob, tree fn); |
a183b5c7 DN |
876 | void lto_output_decl_state_streams (struct output_block *, |
877 | struct lto_out_decl_state *); | |
878 | void lto_output_decl_state_refs (struct output_block *, | |
879 | struct lto_output_stream *, | |
880 | struct lto_out_decl_state *); | |
7cb7d208 | 881 | void lto_output_location (struct output_block *, struct bitpack_d *, location_t); |
d7f09764 DN |
882 | |
883 | ||
884 | /* In lto-cgraph.c */ | |
e75f8f79 | 885 | lto_symtab_encoder_t lto_symtab_encoder_new (bool); |
7380e6ef JH |
886 | int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node); |
887 | void lto_symtab_encoder_delete (lto_symtab_encoder_t); | |
7b99cca4 | 888 | bool lto_symtab_encoder_delete_node (lto_symtab_encoder_t, symtab_node); |
7380e6ef | 889 | bool lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t, |
91fbf0c7 | 890 | struct cgraph_node *); |
f27c1867 JH |
891 | bool lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t, |
892 | symtab_node); | |
893 | void lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t, | |
894 | symtab_node); | |
91fbf0c7 | 895 | |
7380e6ef JH |
896 | bool lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t, |
897 | struct varpool_node *); | |
f27c1867 | 898 | void output_symtab (void); |
ab96cc5b | 899 | void input_symtab (void); |
369451ec | 900 | bool referenced_from_other_partition_p (struct ipa_ref_list *, |
f27c1867 | 901 | lto_symtab_encoder_t); |
9a809897 | 902 | bool reachable_from_other_partition_p (struct cgraph_node *, |
f27c1867 | 903 | lto_symtab_encoder_t); |
f3380641 | 904 | bool referenced_from_this_partition_p (struct ipa_ref_list *, |
f27c1867 | 905 | lto_symtab_encoder_t); |
f3380641 | 906 | bool reachable_from_this_partition_p (struct cgraph_node *, |
f27c1867 | 907 | lto_symtab_encoder_t); |
b4661bfe | 908 | lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder); |
d7f09764 DN |
909 | |
910 | ||
911 | /* In lto-symtab.c. */ | |
1a735925 | 912 | extern void lto_symtab_merge_decls (void); |
40a7fe1e | 913 | extern void lto_symtab_merge_symbols (void); |
d7f09764 | 914 | extern tree lto_symtab_prevailing_decl (tree decl); |
9771b263 | 915 | extern GTY(()) vec<tree, va_gc> *lto_global_var_decls; |
d7f09764 DN |
916 | |
917 | ||
918 | /* In lto-opts.c. */ | |
d7f09764 | 919 | extern void lto_write_options (void); |
d7f09764 DN |
920 | |
921 | ||
d7f09764 DN |
922 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
923 | extern struct lto_stats_d lto_stats; | |
924 | ||
925 | /* Section names corresponding to the values of enum lto_section_type. */ | |
926 | extern const char *lto_section_name[]; | |
927 | ||
928 | /* Holds all the out decl states of functions output so far in the | |
929 | current output file. */ | |
9771b263 | 930 | extern vec<lto_out_decl_state_ptr> lto_function_decl_states; |
d7f09764 DN |
931 | |
932 | /* Return true if LTO tag TAG corresponds to a tree code. */ | |
933 | static inline bool | |
934 | lto_tag_is_tree_code_p (enum LTO_tags tag) | |
935 | { | |
15d16c8a | 936 | return tag > LTO_tree_pickle_reference && (unsigned) tag <= MAX_TREE_CODES; |
d7f09764 DN |
937 | } |
938 | ||
939 | ||
940 | /* Return true if LTO tag TAG corresponds to a gimple code. */ | |
941 | static inline bool | |
942 | lto_tag_is_gimple_code_p (enum LTO_tags tag) | |
943 | { | |
15d16c8a RB |
944 | return (unsigned) tag >= NUM_TREE_CODES + 2 |
945 | && (unsigned) tag < 2 + NUM_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE; | |
d7f09764 DN |
946 | } |
947 | ||
948 | ||
949 | /* Return the LTO tag corresponding to gimple code CODE. See enum | |
950 | LTO_tags for details on the conversion. */ | |
951 | static inline enum LTO_tags | |
952 | lto_gimple_code_to_tag (enum gimple_code code) | |
953 | { | |
15d16c8a | 954 | return (enum LTO_tags) ((unsigned) code + NUM_TREE_CODES + 2); |
d7f09764 DN |
955 | } |
956 | ||
957 | ||
958 | /* Return the GIMPLE code corresponding to TAG. See enum LTO_tags for | |
959 | details on the conversion. */ | |
960 | static inline enum gimple_code | |
961 | lto_tag_to_gimple_code (enum LTO_tags tag) | |
962 | { | |
963 | gcc_assert (lto_tag_is_gimple_code_p (tag)); | |
15d16c8a | 964 | return (enum gimple_code) ((unsigned) tag - NUM_TREE_CODES - 2); |
d7f09764 DN |
965 | } |
966 | ||
967 | ||
968 | /* Return the LTO tag corresponding to tree code CODE. See enum | |
969 | LTO_tags for details on the conversion. */ | |
970 | static inline enum LTO_tags | |
971 | lto_tree_code_to_tag (enum tree_code code) | |
972 | { | |
15d16c8a | 973 | return (enum LTO_tags) ((unsigned) code + 2); |
d7f09764 DN |
974 | } |
975 | ||
976 | ||
977 | /* Return the tree code corresponding to TAG. See enum LTO_tags for | |
978 | details on the conversion. */ | |
979 | static inline enum tree_code | |
980 | lto_tag_to_tree_code (enum LTO_tags tag) | |
981 | { | |
982 | gcc_assert (lto_tag_is_tree_code_p (tag)); | |
15d16c8a | 983 | return (enum tree_code) ((unsigned) tag - 2); |
d7f09764 DN |
984 | } |
985 | ||
f0efc7aa DN |
986 | /* Check that tag ACTUAL == EXPECTED. */ |
987 | static inline void | |
988 | lto_tag_check (enum LTO_tags actual, enum LTO_tags expected) | |
989 | { | |
990 | if (actual != expected) | |
991 | internal_error ("bytecode stream: expected tag %s instead of %s", | |
992 | lto_tag_name (expected), lto_tag_name (actual)); | |
993 | } | |
994 | ||
995 | /* Check that tag ACTUAL is in the range [TAG1, TAG2]. */ | |
996 | static inline void | |
997 | lto_tag_check_range (enum LTO_tags actual, enum LTO_tags tag1, | |
998 | enum LTO_tags tag2) | |
999 | { | |
1000 | if (actual < tag1 || actual > tag2) | |
1001 | internal_error ("bytecode stream: tag %s is not in the expected range " | |
1002 | "[%s, %s]", | |
1003 | lto_tag_name (actual), | |
1004 | lto_tag_name (tag1), | |
1005 | lto_tag_name (tag2)); | |
1006 | } | |
1007 | ||
d7f09764 DN |
1008 | /* Initialize an lto_out_decl_buffer ENCODER. */ |
1009 | static inline void | |
1010 | lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder, | |
1011 | htab_hash hash_fn, htab_eq eq_fn) | |
1012 | { | |
1013 | encoder->tree_hash_table = htab_create (37, hash_fn, eq_fn, free); | |
1014 | encoder->next_index = 0; | |
9771b263 | 1015 | encoder->trees.create (0); |
d7f09764 DN |
1016 | } |
1017 | ||
1018 | ||
073a8998 | 1019 | /* Destroy an lto_tree_ref_encoder ENCODER by freeing its contents. The |
d7f09764 DN |
1020 | memory used by ENCODER is not freed by this function. */ |
1021 | static inline void | |
1022 | lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) | |
1023 | { | |
1024 | /* Hash table may be delete already. */ | |
1025 | if (encoder->tree_hash_table) | |
1026 | htab_delete (encoder->tree_hash_table); | |
9771b263 | 1027 | encoder->trees.release (); |
d7f09764 DN |
1028 | } |
1029 | ||
1030 | /* Return the number of trees encoded in ENCODER. */ | |
1031 | static inline unsigned int | |
1032 | lto_tree_ref_encoder_size (struct lto_tree_ref_encoder *encoder) | |
1033 | { | |
9771b263 | 1034 | return encoder->trees.length (); |
d7f09764 DN |
1035 | } |
1036 | ||
1037 | /* Return the IDX-th tree in ENCODER. */ | |
1038 | static inline tree | |
1039 | lto_tree_ref_encoder_get_tree (struct lto_tree_ref_encoder *encoder, | |
1040 | unsigned int idx) | |
1041 | { | |
9771b263 | 1042 | return encoder->trees[idx]; |
d7f09764 DN |
1043 | } |
1044 | ||
1045 | ||
1046 | /* Return true if LABEL should be emitted in the global context. */ | |
1047 | static inline bool | |
1048 | emit_label_in_global_context_p (tree label) | |
1049 | { | |
1050 | return DECL_NONLOCAL (label) || FORCED_LABEL (label); | |
1051 | } | |
1052 | ||
f27c1867 JH |
1053 | /* Return number of encoded nodes in ENCODER. */ |
1054 | static inline int | |
1055 | lto_symtab_encoder_size (lto_symtab_encoder_t encoder) | |
1056 | { | |
9771b263 | 1057 | return encoder->nodes.length (); |
7b99cca4 JH |
1058 | } |
1059 | ||
1060 | /* Value used to represent failure of lto_symtab_encoder_lookup. */ | |
1061 | #define LCC_NOT_FOUND (-1) | |
1062 | ||
1063 | /* Look up NODE in encoder. Return NODE's reference if it has been encoded | |
1064 | or LCC_NOT_FOUND if it is not there. */ | |
1065 | ||
1066 | static inline int | |
1067 | lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder, | |
1068 | symtab_node node) | |
1069 | { | |
1070 | void **slot = pointer_map_contains (encoder->map, node); | |
1071 | return (slot && *slot ? (size_t) *(slot) - 1 : LCC_NOT_FOUND); | |
f27c1867 JH |
1072 | } |
1073 | ||
1074 | /* Return true if iterator LSE points to nothing. */ | |
1075 | static inline bool | |
1076 | lsei_end_p (lto_symtab_encoder_iterator lsei) | |
1077 | { | |
1078 | return lsei.index >= (unsigned)lto_symtab_encoder_size (lsei.encoder); | |
1079 | } | |
1080 | ||
1081 | /* Advance iterator LSE. */ | |
1082 | static inline void | |
1083 | lsei_next (lto_symtab_encoder_iterator *lsei) | |
1084 | { | |
1085 | lsei->index++; | |
1086 | } | |
1087 | ||
1088 | /* Return the node pointed to by LSI. */ | |
1089 | static inline symtab_node | |
1090 | lsei_node (lto_symtab_encoder_iterator lsei) | |
1091 | { | |
9771b263 | 1092 | return lsei.encoder->nodes[lsei.index].node; |
f27c1867 JH |
1093 | } |
1094 | ||
1095 | /* Return the node pointed to by LSI. */ | |
1096 | static inline struct cgraph_node * | |
1097 | lsei_cgraph_node (lto_symtab_encoder_iterator lsei) | |
1098 | { | |
9771b263 | 1099 | return cgraph (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1100 | } |
1101 | ||
1102 | /* Return the node pointed to by LSI. */ | |
1103 | static inline struct varpool_node * | |
1104 | lsei_varpool_node (lto_symtab_encoder_iterator lsei) | |
1105 | { | |
9771b263 | 1106 | return varpool (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1107 | } |
1108 | ||
f27c1867 JH |
1109 | /* Return the cgraph node corresponding to REF using ENCODER. */ |
1110 | ||
1111 | static inline symtab_node | |
1112 | lto_symtab_encoder_deref (lto_symtab_encoder_t encoder, int ref) | |
1113 | { | |
1114 | if (ref == LCC_NOT_FOUND) | |
1115 | return NULL; | |
1116 | ||
9771b263 | 1117 | return encoder->nodes[ref].node; |
f27c1867 JH |
1118 | } |
1119 | ||
1120 | /* Return an iterator to the first node in LSI. */ | |
1121 | static inline lto_symtab_encoder_iterator | |
1122 | lsei_start (lto_symtab_encoder_t encoder) | |
1123 | { | |
1124 | lto_symtab_encoder_iterator lsei; | |
1125 | ||
1126 | lsei.encoder = encoder; | |
1127 | lsei.index = 0; | |
1128 | return lsei; | |
1129 | } | |
1130 | ||
1131 | /* Advance iterator LSE. */ | |
1132 | static inline void | |
1133 | lsei_next_in_partition (lto_symtab_encoder_iterator *lsei) | |
1134 | { | |
1135 | lsei_next (lsei); | |
1136 | while (!lsei_end_p (*lsei) | |
1137 | && !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))) | |
1138 | lsei_next (lsei); | |
1139 | } | |
1140 | ||
1141 | /* Return an iterator to the first node in LSI. */ | |
1142 | static inline lto_symtab_encoder_iterator | |
1143 | lsei_start_in_partition (lto_symtab_encoder_t encoder) | |
1144 | { | |
1145 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1146 | ||
1147 | if (lsei_end_p (lsei)) | |
1148 | return lsei; | |
1149 | if (!lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) | |
1150 | lsei_next_in_partition (&lsei); | |
1151 | ||
1152 | return lsei; | |
1153 | } | |
1154 | ||
1155 | /* Advance iterator LSE. */ | |
1156 | static inline void | |
1157 | lsei_next_function_in_partition (lto_symtab_encoder_iterator *lsei) | |
1158 | { | |
1159 | lsei_next (lsei); | |
1160 | while (!lsei_end_p (*lsei) | |
5d59b5e1 | 1161 | && (!is_a <cgraph_node> (lsei_node (*lsei)) |
f27c1867 JH |
1162 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1163 | lsei_next (lsei); | |
1164 | } | |
1165 | ||
1166 | /* Return an iterator to the first node in LSI. */ | |
1167 | static inline lto_symtab_encoder_iterator | |
1168 | lsei_start_function_in_partition (lto_symtab_encoder_t encoder) | |
1169 | { | |
1170 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1171 | ||
1172 | if (lsei_end_p (lsei)) | |
1173 | return lsei; | |
5d59b5e1 | 1174 | if (!is_a <cgraph_node> (lsei_node (lsei)) |
f27c1867 JH |
1175 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1176 | lsei_next_function_in_partition (&lsei); | |
1177 | ||
1178 | return lsei; | |
1179 | } | |
1180 | ||
1181 | /* Advance iterator LSE. */ | |
1182 | static inline void | |
1183 | lsei_next_variable_in_partition (lto_symtab_encoder_iterator *lsei) | |
1184 | { | |
1185 | lsei_next (lsei); | |
1186 | while (!lsei_end_p (*lsei) | |
5d59b5e1 | 1187 | && (!is_a <varpool_node> (lsei_node (*lsei)) |
f27c1867 JH |
1188 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1189 | lsei_next (lsei); | |
1190 | } | |
1191 | ||
1192 | /* Return an iterator to the first node in LSI. */ | |
1193 | static inline lto_symtab_encoder_iterator | |
1194 | lsei_start_variable_in_partition (lto_symtab_encoder_t encoder) | |
1195 | { | |
1196 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1197 | ||
1198 | if (lsei_end_p (lsei)) | |
1199 | return lsei; | |
5d59b5e1 | 1200 | if (!is_a <varpool_node> (lsei_node (lsei)) |
f27c1867 JH |
1201 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1202 | lsei_next_variable_in_partition (&lsei); | |
1203 | ||
1204 | return lsei; | |
1205 | } | |
1206 | ||
d7f09764 DN |
1207 | DEFINE_DECL_STREAM_FUNCS (TYPE, type) |
1208 | DEFINE_DECL_STREAM_FUNCS (FIELD_DECL, field_decl) | |
1209 | DEFINE_DECL_STREAM_FUNCS (FN_DECL, fn_decl) | |
1210 | DEFINE_DECL_STREAM_FUNCS (VAR_DECL, var_decl) | |
1211 | DEFINE_DECL_STREAM_FUNCS (TYPE_DECL, type_decl) | |
1212 | DEFINE_DECL_STREAM_FUNCS (NAMESPACE_DECL, namespace_decl) | |
1213 | DEFINE_DECL_STREAM_FUNCS (LABEL_DECL, label_decl) | |
1214 | ||
1215 | #endif /* GCC_LTO_STREAMER_H */ |