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d7f09764 DN |
1 | /* Data structures and declarations used for reading and writing |
2 | GIMPLE to a file stream. | |
3 | ||
23a5b65a | 4 | Copyright (C) 2009-2014 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 "target.h" |
29 | #include "cgraph.h" | |
30 | #include "vec.h" | |
5c4f225f | 31 | #include "alloc-pool.h" |
db0bf14f | 32 | #include "gcov-io.h" |
f0efc7aa | 33 | #include "diagnostic.h" |
d579fcda | 34 | #include "pointer-set.h" |
47c79d56 | 35 | |
d7f09764 DN |
36 | /* Define when debugging the LTO streamer. This causes the writer |
37 | to output the numeric value for the memory address of the tree node | |
38 | being emitted. When debugging a problem in the reader, check the | |
39 | original address that the writer was emitting using lto_orig_address_get. | |
40 | With this value, set a breakpoint in the writer (e.g., lto_output_tree) | |
41 | to trace how the faulty node is being emitted. */ | |
42 | /* #define LTO_STREAMER_DEBUG 1 */ | |
43 | ||
44 | /* The encoding for a function consists of the following sections: | |
45 | ||
46 | 1) The header. | |
47 | 2) FIELD_DECLS. | |
48 | 3) FUNCTION_DECLS. | |
49 | 4) global VAR_DECLS. | |
50 | 5) type_decls | |
51 | 6) types. | |
52 | 7) Names for the labels that have names | |
53 | 8) The SSA names. | |
54 | 9) The control flow graph. | |
55 | 10-11)Gimple for local decls. | |
56 | 12) Gimple for the function. | |
57 | 13) Strings. | |
58 | ||
59 | 1) THE HEADER. | |
60 | 2-6) THE GLOBAL DECLS AND TYPES. | |
61 | ||
62 | The global decls and types are encoded in the same way. For each | |
63 | entry, there is word with the offset within the section to the | |
64 | entry. | |
65 | ||
b8698a0f | 66 | 7) THE LABEL NAMES. |
d7f09764 DN |
67 | |
68 | Since most labels do not have names, this section my be of zero | |
69 | length. It consists of an array of string table references, one | |
70 | per label. In the lto code, the labels are given either | |
71 | positive or negative indexes. the positive ones have names and | |
72 | the negative ones do not. The positive index can be used to | |
73 | find the name in this array. | |
74 | ||
b8698a0f | 75 | 9) THE CFG. |
d7f09764 DN |
76 | |
77 | 10) Index into the local decls. Since local decls can have local | |
78 | decls inside them, they must be read in randomly in order to | |
b8698a0f | 79 | properly restore them. |
d7f09764 DN |
80 | |
81 | 11-12) GIMPLE FOR THE LOCAL DECLS AND THE FUNCTION BODY. | |
82 | ||
83 | The gimple consists of a set of records. | |
84 | ||
85 | THE FUNCTION | |
b8698a0f | 86 | |
d7f09764 DN |
87 | At the top level of (8) is the function. It consists of five |
88 | pieces: | |
89 | ||
90 | LTO_function - The tag. | |
91 | eh tree - This is all of the exception handling regions | |
92 | put out in a post order traversial of the | |
93 | tree. Siblings are output as lists terminated | |
94 | by a 0. The set of fields matches the fields | |
95 | defined in except.c. | |
96 | ||
97 | last_basic_block - in uleb128 form. | |
98 | ||
99 | basic blocks - This is the set of basic blocks. | |
100 | ||
101 | zero - The termination of the basic blocks. | |
102 | ||
103 | BASIC BLOCKS | |
104 | ||
105 | There are two forms of basic blocks depending on if they are | |
106 | empty or not. | |
107 | ||
108 | The basic block consists of: | |
109 | ||
110 | LTO_bb1 or LTO_bb0 - The tag. | |
111 | ||
112 | bb->index - the index in uleb128 form. | |
113 | ||
114 | #succs - The number of successors un uleb128 form. | |
115 | ||
116 | the successors - For each edge, a pair. The first of the | |
117 | pair is the index of the successor in | |
118 | uleb128 form and the second are the flags in | |
119 | uleb128 form. | |
120 | ||
121 | the statements - A gimple tree, as described above. | |
122 | These are only present for LTO_BB1. | |
123 | Following each statement is an optional | |
124 | exception handling record LTO_eh_region | |
125 | which contains the region number (for | |
126 | regions >= 0). | |
127 | ||
128 | zero - This is only present for LTO_BB1 and is used | |
129 | to terminate the statements and exception | |
130 | regions within this block. | |
131 | ||
132 | 12) STRINGS | |
133 | ||
134 | String are represented in the table as pairs, a length in ULEB128 | |
135 | form followed by the data for the string. */ | |
136 | ||
b9ed2c2c | 137 | #define LTO_major_version 4 |
15b25b24 | 138 | #define LTO_minor_version 0 |
d7f09764 DN |
139 | |
140 | typedef unsigned char lto_decl_flags_t; | |
141 | ||
142 | ||
d7f09764 DN |
143 | /* Tags representing the various IL objects written to the bytecode file |
144 | (GIMPLE statements, basic blocks, EH regions, tree nodes, etc). | |
145 | ||
146 | NOTE, when adding new LTO tags, also update lto_tag_name. */ | |
b8698a0f | 147 | enum LTO_tags |
d7f09764 DN |
148 | { |
149 | LTO_null = 0, | |
150 | ||
15d16c8a RB |
151 | /* Special for streamer. Reference to previously-streamed node. */ |
152 | LTO_tree_pickle_reference, | |
153 | ||
d7f09764 DN |
154 | /* Reserve enough entries to fit all the tree and gimple codes handled |
155 | by the streamer. This guarantees that: | |
156 | ||
157 | 1- Given a tree code C: | |
158 | enum LTO_tags tag == C + 1 | |
159 | ||
160 | 2- Given a gimple code C: | |
161 | enum LTO_tags tag == C + NUM_TREE_CODES + 1 | |
162 | ||
163 | Conversely, to map between LTO tags and tree/gimple codes, the | |
164 | reverse operation must be applied. */ | |
07233947 | 165 | LTO_bb0 = 1 + MAX_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE, |
d7f09764 DN |
166 | LTO_bb1, |
167 | ||
168 | /* EH region holding the previous statement. */ | |
169 | LTO_eh_region, | |
170 | ||
171 | /* An MD or NORMAL builtin. Only the code and class are streamed out. */ | |
172 | LTO_builtin_decl, | |
173 | ||
c61f8c3b RG |
174 | /* Shared INTEGER_CST node. */ |
175 | LTO_integer_cst, | |
176 | ||
d7f09764 DN |
177 | /* Function body. */ |
178 | LTO_function, | |
179 | ||
180 | /* EH table. */ | |
181 | LTO_eh_table, | |
182 | ||
183 | /* EH region types. These mirror enum eh_region_type. */ | |
184 | LTO_ert_cleanup, | |
185 | LTO_ert_try, | |
186 | LTO_ert_allowed_exceptions, | |
187 | LTO_ert_must_not_throw, | |
188 | ||
189 | /* EH landing pad. */ | |
190 | LTO_eh_landing_pad, | |
191 | ||
192 | /* EH try/catch node. */ | |
193 | LTO_eh_catch, | |
194 | ||
ee03e71d RB |
195 | /* Special for global streamer. A blob of unnamed tree nodes. */ |
196 | LTO_tree_scc, | |
197 | ||
d7f09764 DN |
198 | /* References to indexable tree nodes. These objects are stored in |
199 | tables that are written separately from the function bodies that | |
200 | reference them. This way they can be instantiated even when the | |
201 | referencing functions aren't (e.g., during WPA) and it also allows | |
202 | functions to be copied from one file to another without having | |
203 | to unpickle the body first (the references are location | |
204 | independent). | |
205 | ||
206 | NOTE, do not regroup these values as the grouping is exposed | |
207 | in the range checks done in lto_input_tree. */ | |
208 | LTO_field_decl_ref, /* Do not change. */ | |
209 | LTO_function_decl_ref, | |
210 | LTO_label_decl_ref, | |
211 | LTO_namespace_decl_ref, | |
212 | LTO_result_decl_ref, | |
213 | LTO_ssa_name_ref, | |
214 | LTO_type_decl_ref, | |
215 | LTO_type_ref, | |
216 | LTO_const_decl_ref, | |
217 | LTO_imported_decl_ref, | |
6be14c0e | 218 | LTO_translation_unit_decl_ref, |
5f673c6a TB |
219 | LTO_global_decl_ref, |
220 | LTO_namelist_decl_ref, /* Do not change. */ | |
d7f09764 DN |
221 | |
222 | /* This tag must always be last. */ | |
223 | LTO_NUM_TAGS | |
224 | }; | |
225 | ||
226 | ||
227 | /* Set of section types that are in an LTO file. This list will grow | |
228 | as the number of IPA passes grows since each IPA pass will need its | |
229 | own section type to store its summary information. | |
230 | ||
231 | When adding a new section type, you must also extend the | |
232 | LTO_SECTION_NAME array in lto-section-in.c. */ | |
233 | enum lto_section_type | |
234 | { | |
235 | LTO_section_decls = 0, | |
236 | LTO_section_function_body, | |
237 | LTO_section_static_initializer, | |
ab96cc5b | 238 | LTO_section_symtab, |
369451ec | 239 | LTO_section_refs, |
49f836ba | 240 | LTO_section_asm, |
fb3f88cc | 241 | LTO_section_jump_functions, |
d7f09764 DN |
242 | LTO_section_ipa_pure_const, |
243 | LTO_section_ipa_reference, | |
0208f7da | 244 | LTO_section_ipa_profile, |
ab96cc5b | 245 | LTO_section_symtab_nodes, |
d7f09764 | 246 | LTO_section_opts, |
922f15c2 | 247 | LTO_section_cgraph_opt_sum, |
10a5dd5d | 248 | LTO_section_inline_summary, |
2c9561b5 | 249 | LTO_section_ipcp_transform, |
d7f09764 DN |
250 | LTO_N_SECTION_TYPES /* Must be last. */ |
251 | }; | |
252 | ||
253 | /* Indices to the various function, type and symbol streams. */ | |
84562394 | 254 | enum lto_decl_stream_e_t |
d7f09764 DN |
255 | { |
256 | LTO_DECL_STREAM_TYPE = 0, /* Must be first. */ | |
257 | LTO_DECL_STREAM_FIELD_DECL, | |
258 | LTO_DECL_STREAM_FN_DECL, | |
259 | LTO_DECL_STREAM_VAR_DECL, | |
260 | LTO_DECL_STREAM_TYPE_DECL, | |
261 | LTO_DECL_STREAM_NAMESPACE_DECL, | |
262 | LTO_DECL_STREAM_LABEL_DECL, | |
263 | LTO_N_DECL_STREAMS | |
84562394 | 264 | }; |
d7f09764 DN |
265 | |
266 | typedef enum ld_plugin_symbol_resolution ld_plugin_symbol_resolution_t; | |
d7f09764 DN |
267 | |
268 | ||
269 | /* Macro to define convenience functions for type and decl streams | |
b8698a0f | 270 | in lto_file_decl_data. */ |
d7f09764 DN |
271 | #define DEFINE_DECL_STREAM_FUNCS(UPPER_NAME, name) \ |
272 | static inline tree \ | |
273 | lto_file_decl_data_get_ ## name (struct lto_file_decl_data *data, \ | |
274 | unsigned int idx) \ | |
275 | { \ | |
276 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
277 | gcc_assert (idx < state->streams[LTO_DECL_STREAM_## UPPER_NAME].size); \ | |
278 | return state->streams[LTO_DECL_STREAM_## UPPER_NAME].trees[idx]; \ | |
279 | } \ | |
280 | \ | |
281 | static inline unsigned int \ | |
282 | lto_file_decl_data_num_ ## name ## s (struct lto_file_decl_data *data) \ | |
283 | { \ | |
284 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
285 | return state->streams[LTO_DECL_STREAM_## UPPER_NAME].size; \ | |
286 | } | |
287 | ||
288 | ||
289 | /* Return a char pointer to the start of a data stream for an lto pass | |
290 | or function. The first parameter is the file data that contains | |
291 | the information. The second parameter is the type of information | |
292 | to be obtained. The third parameter is the name of the function | |
b8698a0f | 293 | and is only used when finding a function body; otherwise it is |
d7f09764 | 294 | NULL. The fourth parameter is the length of the data returned. */ |
b8698a0f | 295 | typedef const char* (lto_get_section_data_f) (struct lto_file_decl_data *, |
d7f09764 | 296 | enum lto_section_type, |
b8698a0f | 297 | const char *, |
d7f09764 DN |
298 | size_t *); |
299 | ||
300 | /* Return the data found from the above call. The first three | |
301 | parameters are the same as above. The fourth parameter is the data | |
073a8998 | 302 | itself and the fifth is the length of the data. */ |
b8698a0f | 303 | typedef void (lto_free_section_data_f) (struct lto_file_decl_data *, |
d7f09764 DN |
304 | enum lto_section_type, |
305 | const char *, | |
306 | const char *, | |
307 | size_t); | |
308 | ||
d7f09764 | 309 | /* Structure used as buffer for reading an LTO file. */ |
b8698a0f | 310 | struct lto_input_block |
d7f09764 DN |
311 | { |
312 | const char *data; | |
313 | unsigned int p; | |
314 | unsigned int len; | |
315 | }; | |
316 | ||
317 | #define LTO_INIT_INPUT_BLOCK(BASE,D,P,L) \ | |
318 | do { \ | |
319 | BASE.data = D; \ | |
320 | BASE.p = P; \ | |
321 | BASE.len = L; \ | |
322 | } while (0) | |
323 | ||
324 | #define LTO_INIT_INPUT_BLOCK_PTR(BASE,D,P,L) \ | |
325 | do { \ | |
326 | BASE->data = D; \ | |
327 | BASE->p = P; \ | |
328 | BASE->len = L; \ | |
329 | } while (0) | |
330 | ||
331 | ||
332 | /* The is the first part of the record for a function or constructor | |
333 | in the .o file. */ | |
334 | struct lto_header | |
335 | { | |
336 | int16_t major_version; | |
337 | int16_t minor_version; | |
d7f09764 DN |
338 | }; |
339 | ||
340 | /* The header for a function body. */ | |
341 | struct lto_function_header | |
342 | { | |
343 | /* The header for all types of sections. */ | |
344 | struct lto_header lto_header; | |
345 | ||
346 | /* Number of labels with names. */ | |
347 | int32_t num_named_labels; | |
348 | ||
349 | /* Number of labels without names. */ | |
350 | int32_t num_unnamed_labels; | |
351 | ||
352 | /* Size compressed or 0 if not compressed. */ | |
353 | int32_t compressed_size; | |
354 | ||
355 | /* Size of names for named labels. */ | |
356 | int32_t named_label_size; | |
357 | ||
358 | /* Size of the cfg. */ | |
359 | int32_t cfg_size; | |
360 | ||
361 | /* Size of main gimple body of function. */ | |
362 | int32_t main_size; | |
363 | ||
364 | /* Size of the string table. */ | |
365 | int32_t string_size; | |
366 | }; | |
367 | ||
368 | ||
369 | /* Structure describing a symbol section. */ | |
370 | struct lto_decl_header | |
371 | { | |
372 | /* The header for all types of sections. */ | |
373 | struct lto_header lto_header; | |
374 | ||
375 | /* Size of region for decl state. */ | |
376 | int32_t decl_state_size; | |
377 | ||
378 | /* Number of nodes in globals stream. */ | |
379 | int32_t num_nodes; | |
380 | ||
381 | /* Size of region for expressions, decls, types, etc. */ | |
382 | int32_t main_size; | |
383 | ||
384 | /* Size of the string table. */ | |
385 | int32_t string_size; | |
386 | }; | |
387 | ||
388 | ||
49f836ba JB |
389 | /* Structure describing top level asm()s. */ |
390 | struct lto_asm_header | |
391 | { | |
392 | /* The header for all types of sections. */ | |
393 | struct lto_header lto_header; | |
394 | ||
395 | /* Size compressed or 0 if not compressed. */ | |
396 | int32_t compressed_size; | |
397 | ||
398 | /* Size of region for expressions, decls, types, etc. */ | |
399 | int32_t main_size; | |
400 | ||
401 | /* Size of the string table. */ | |
402 | int32_t string_size; | |
403 | }; | |
404 | ||
405 | ||
d7f09764 DN |
406 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
407 | struct lto_stats_d | |
408 | { | |
409 | unsigned HOST_WIDE_INT num_input_cgraph_nodes; | |
7b99cca4 | 410 | unsigned HOST_WIDE_INT num_output_symtab_nodes; |
d7f09764 DN |
411 | unsigned HOST_WIDE_INT num_input_files; |
412 | unsigned HOST_WIDE_INT num_output_files; | |
413 | unsigned HOST_WIDE_INT num_cgraph_partitions; | |
414 | unsigned HOST_WIDE_INT section_size[LTO_N_SECTION_TYPES]; | |
415 | unsigned HOST_WIDE_INT num_function_bodies; | |
416 | unsigned HOST_WIDE_INT num_trees[NUM_TREE_CODES]; | |
417 | unsigned HOST_WIDE_INT num_output_il_bytes; | |
418 | unsigned HOST_WIDE_INT num_compressed_il_bytes; | |
419 | unsigned HOST_WIDE_INT num_input_il_bytes; | |
420 | unsigned HOST_WIDE_INT num_uncompressed_il_bytes; | |
ee03e71d RB |
421 | unsigned HOST_WIDE_INT num_tree_bodies_output; |
422 | unsigned HOST_WIDE_INT num_pickle_refs_output; | |
d7f09764 DN |
423 | }; |
424 | ||
7b99cca4 | 425 | /* Entry of LTO symtab encoder. */ |
84562394 | 426 | struct lto_encoder_entry |
7b99cca4 | 427 | { |
5e20cdc9 | 428 | symtab_node *node; |
7b99cca4 JH |
429 | /* Is the node in this partition (i.e. ltrans of this partition will |
430 | be responsible for outputting it)? */ | |
431 | unsigned int in_partition:1; | |
432 | /* Do we encode body in this partition? */ | |
433 | unsigned int body:1; | |
434 | /* Do we encode initializer in this partition? | |
435 | For example the readonly variable initializers are encoded to aid | |
436 | constant folding even if they are not in the partition. */ | |
437 | unsigned int initializer:1; | |
84562394 | 438 | }; |
7b99cca4 | 439 | |
7b99cca4 | 440 | |
d7f09764 | 441 | /* Encoder data structure used to stream callgraph nodes. */ |
7380e6ef | 442 | struct lto_symtab_encoder_d |
d7f09764 | 443 | { |
9771b263 | 444 | vec<lto_encoder_entry> nodes; |
7b99cca4 | 445 | pointer_map_t *map; |
2f41ecf5 | 446 | }; |
7380e6ef JH |
447 | |
448 | typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t; | |
2f41ecf5 | 449 | |
f27c1867 | 450 | /* Iterator structure for cgraph node sets. */ |
84562394 | 451 | struct lto_symtab_encoder_iterator |
703e95cf | 452 | { |
f27c1867 JH |
453 | lto_symtab_encoder_t encoder; |
454 | unsigned index; | |
84562394 | 455 | }; |
f27c1867 JH |
456 | |
457 | ||
458 | ||
703e95cf | 459 | |
d7f09764 | 460 | /* Mapping from indices to trees. */ |
49ba8180 | 461 | struct GTY(()) lto_tree_ref_table |
d7f09764 DN |
462 | { |
463 | /* Array of referenced trees . */ | |
49ba8180 | 464 | tree * GTY((length ("%h.size"))) trees; |
d7f09764 DN |
465 | |
466 | /* Size of array. */ | |
467 | unsigned int size; | |
468 | }; | |
469 | ||
470 | ||
d7f09764 DN |
471 | /* The lto_tree_ref_encoder struct is used to encode trees into indices. */ |
472 | ||
473 | struct lto_tree_ref_encoder | |
474 | { | |
7c5848b8 | 475 | pointer_map<unsigned> *tree_hash_table; /* Maps pointers to indices. */ |
d579fcda | 476 | vec<tree> trees; /* Maps indices to pointers. */ |
d7f09764 DN |
477 | }; |
478 | ||
479 | ||
480 | /* Structure to hold states of input scope. */ | |
49ba8180 | 481 | struct GTY(()) lto_in_decl_state |
d7f09764 DN |
482 | { |
483 | /* Array of lto_in_decl_buffers to store type and decls streams. */ | |
484 | struct lto_tree_ref_table streams[LTO_N_DECL_STREAMS]; | |
485 | ||
486 | /* If this in-decl state is associated with a function. FN_DECL | |
487 | point to the FUNCTION_DECL. */ | |
488 | tree fn_decl; | |
489 | }; | |
490 | ||
491 | typedef struct lto_in_decl_state *lto_in_decl_state_ptr; | |
492 | ||
493 | ||
494 | /* The structure that holds all of the vectors of global types, | |
495 | decls and cgraph nodes used in the serialization of this file. */ | |
496 | struct lto_out_decl_state | |
497 | { | |
498 | /* The buffers contain the sets of decls of various kinds and types we have | |
499 | seen so far and the indexes assigned to them. */ | |
500 | struct lto_tree_ref_encoder streams[LTO_N_DECL_STREAMS]; | |
501 | ||
502 | /* Encoder for cgraph nodes. */ | |
7380e6ef | 503 | lto_symtab_encoder_t symtab_node_encoder; |
2f41ecf5 | 504 | |
d7f09764 DN |
505 | /* If this out-decl state belongs to a function, fn_decl points to that |
506 | function. Otherwise, it is NULL. */ | |
507 | tree fn_decl; | |
508 | }; | |
509 | ||
510 | typedef struct lto_out_decl_state *lto_out_decl_state_ptr; | |
511 | ||
d7f09764 | 512 | |
aed7d7cf AK |
513 | /* Compact representation of a index <-> resolution pair. Unpacked to an |
514 | vector later. */ | |
515 | struct res_pair | |
516 | { | |
517 | ld_plugin_symbol_resolution_t res; | |
518 | unsigned index; | |
519 | }; | |
aed7d7cf | 520 | |
aed7d7cf | 521 | |
d7f09764 DN |
522 | /* One of these is allocated for each object file that being compiled |
523 | by lto. This structure contains the tables that are needed by the | |
524 | serialized functions and ipa passes to connect themselves to the | |
525 | global types and decls as they are reconstituted. */ | |
49ba8180 | 526 | struct GTY(()) lto_file_decl_data |
d7f09764 DN |
527 | { |
528 | /* Decl state currently used. */ | |
529 | struct lto_in_decl_state *current_decl_state; | |
530 | ||
531 | /* Decl state corresponding to regions outside of any functions | |
532 | in the compilation unit. */ | |
533 | struct lto_in_decl_state *global_decl_state; | |
534 | ||
535 | /* Table of cgraph nodes present in this file. */ | |
7380e6ef | 536 | lto_symtab_encoder_t GTY((skip)) symtab_node_encoder; |
2f41ecf5 | 537 | |
d7f09764 | 538 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 539 | htab_t GTY((param_is (struct lto_in_decl_state))) function_decl_states; |
d7f09764 DN |
540 | |
541 | /* The .o file that these offsets relate to. */ | |
49ba8180 | 542 | const char *GTY((skip)) file_name; |
d7f09764 | 543 | |
d7f09764 | 544 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 545 | htab_t GTY((skip)) section_hash_table; |
d7f09764 DN |
546 | |
547 | /* Hash new name of renamed global declaration to its original name. */ | |
49ba8180 | 548 | htab_t GTY((skip)) renaming_hash_table; |
73ce4d1e AK |
549 | |
550 | /* Linked list used temporarily in reader */ | |
551 | struct lto_file_decl_data *next; | |
552 | ||
553 | /* Sub ID for merged objects. */ | |
dde8b360 | 554 | unsigned HOST_WIDE_INT id; |
73ce4d1e AK |
555 | |
556 | /* Symbol resolutions for this file */ | |
9771b263 | 557 | vec<res_pair> GTY((skip)) respairs; |
aed7d7cf | 558 | unsigned max_index; |
db0bf14f JH |
559 | |
560 | struct gcov_ctr_summary GTY((skip)) profile_info; | |
bbf9ad07 JH |
561 | |
562 | /* Map assigning declarations their resolutions. */ | |
563 | pointer_map_t * GTY((skip)) resolution_map; | |
d7f09764 DN |
564 | }; |
565 | ||
a9429e29 LB |
566 | typedef struct lto_file_decl_data *lto_file_decl_data_ptr; |
567 | ||
d7f09764 DN |
568 | struct lto_char_ptr_base |
569 | { | |
570 | char *ptr; | |
571 | }; | |
572 | ||
573 | /* An incore byte stream to buffer the various parts of the function. | |
574 | The entire structure should be zeroed when created. The record | |
575 | consists of a set of blocks. The first sizeof (ptr) bytes are used | |
576 | as a chain, and the rest store the bytes to be written. */ | |
577 | struct lto_output_stream | |
578 | { | |
579 | /* The pointer to the first block in the stream. */ | |
580 | struct lto_char_ptr_base * first_block; | |
581 | ||
582 | /* The pointer to the last and current block in the stream. */ | |
583 | struct lto_char_ptr_base * current_block; | |
584 | ||
585 | /* The pointer to where the next char should be written. */ | |
586 | char * current_pointer; | |
587 | ||
588 | /* The number of characters left in the current block. */ | |
589 | unsigned int left_in_block; | |
590 | ||
591 | /* The block size of the last block allocated. */ | |
592 | unsigned int block_size; | |
593 | ||
594 | /* The total number of characters written. */ | |
595 | unsigned int total_size; | |
596 | }; | |
597 | ||
598 | /* The is the first part of the record in an LTO file for many of the | |
599 | IPA passes. */ | |
600 | struct lto_simple_header | |
601 | { | |
602 | /* The header for all types of sections. */ | |
603 | struct lto_header lto_header; | |
604 | ||
605 | /* Size of main gimple body of function. */ | |
606 | int32_t main_size; | |
607 | ||
608 | /* Size of main stream when compressed. */ | |
609 | int32_t compressed_size; | |
610 | }; | |
611 | ||
612 | /* A simple output block. This can be used for simple IPA passes that | |
613 | do not need more than one stream. */ | |
614 | struct lto_simple_output_block | |
615 | { | |
616 | enum lto_section_type section_type; | |
617 | struct lto_out_decl_state *decl_state; | |
618 | ||
619 | /* The stream that the main tree codes are written to. */ | |
620 | struct lto_output_stream *main_stream; | |
621 | }; | |
622 | ||
4a8fb1a1 LC |
623 | /* String hashing. */ |
624 | ||
625 | struct string_slot | |
626 | { | |
627 | const char *s; | |
628 | int len; | |
629 | unsigned int slot_num; | |
630 | }; | |
631 | ||
632 | /* Hashtable helpers. */ | |
633 | ||
634 | struct string_slot_hasher : typed_noop_remove <string_slot> | |
635 | { | |
636 | typedef string_slot value_type; | |
637 | typedef string_slot compare_type; | |
638 | static inline hashval_t hash (const value_type *); | |
639 | static inline bool equal (const value_type *, const compare_type *); | |
640 | }; | |
641 | ||
642 | /* Returns a hash code for DS. Adapted from libiberty's htab_hash_string | |
643 | to support strings that may not end in '\0'. */ | |
644 | ||
645 | inline hashval_t | |
646 | string_slot_hasher::hash (const value_type *ds) | |
647 | { | |
648 | hashval_t r = ds->len; | |
649 | int i; | |
650 | ||
651 | for (i = 0; i < ds->len; i++) | |
652 | r = r * 67 + (unsigned)ds->s[i] - 113; | |
653 | return r; | |
654 | } | |
655 | ||
656 | /* Returns nonzero if DS1 and DS2 are equal. */ | |
657 | ||
658 | inline bool | |
659 | string_slot_hasher::equal (const value_type *ds1, const compare_type *ds2) | |
660 | { | |
661 | if (ds1->len == ds2->len) | |
662 | return memcmp (ds1->s, ds2->s, ds1->len) == 0; | |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
d7f09764 DN |
667 | /* Data structure holding all the data and descriptors used when writing |
668 | an LTO file. */ | |
669 | struct output_block | |
670 | { | |
671 | enum lto_section_type section_type; | |
672 | struct lto_out_decl_state *decl_state; | |
673 | ||
674 | /* The stream that the main tree codes are written to. */ | |
675 | struct lto_output_stream *main_stream; | |
676 | ||
677 | /* The stream that contains the string table. */ | |
678 | struct lto_output_stream *string_stream; | |
679 | ||
680 | /* The stream that contains the cfg. */ | |
681 | struct lto_output_stream *cfg_stream; | |
682 | ||
683 | /* The hash table that contains the set of strings we have seen so | |
684 | far and the indexes assigned to them. */ | |
4a8fb1a1 | 685 | hash_table <string_slot_hasher> string_hash_table; |
d7f09764 DN |
686 | |
687 | /* The current cgraph_node that we are currently serializing. Null | |
688 | if we are serializing something else. */ | |
689 | struct cgraph_node *cgraph_node; | |
690 | ||
691 | /* These are the last file and line that were seen in the stream. | |
692 | If the current node differs from these, it needs to insert | |
693 | something into the stream and fix these up. */ | |
694 | const char *current_file; | |
695 | int current_line; | |
696 | int current_col; | |
697 | ||
698 | /* True if writing globals and types. */ | |
699 | bool global; | |
700 | ||
701 | /* Cache of nodes written in this section. */ | |
412288f1 | 702 | struct streamer_tree_cache_d *writer_cache; |
fac009a8 JH |
703 | |
704 | /* All data persistent across whole duration of output block | |
705 | can go here. */ | |
706 | struct obstack obstack; | |
d7f09764 DN |
707 | }; |
708 | ||
709 | ||
710 | /* Data and descriptors used when reading from an LTO file. */ | |
711 | struct data_in | |
712 | { | |
713 | /* The global decls and types. */ | |
714 | struct lto_file_decl_data *file_data; | |
715 | ||
716 | /* All of the labels. */ | |
717 | tree *labels; | |
718 | ||
719 | /* The string table. */ | |
720 | const char *strings; | |
721 | ||
722 | /* The length of the string table. */ | |
723 | unsigned int strings_len; | |
724 | ||
725 | /* Number of named labels. Used to find the index of unnamed labels | |
726 | since they share space with the named labels. */ | |
b8698a0f | 727 | unsigned int num_named_labels; |
d7f09764 DN |
728 | |
729 | /* Number of unnamed labels. */ | |
730 | unsigned int num_unnamed_labels; | |
731 | ||
d7f09764 | 732 | /* Maps each reference number to the resolution done by the linker. */ |
9771b263 | 733 | vec<ld_plugin_symbol_resolution_t> globals_resolution; |
d7f09764 DN |
734 | |
735 | /* Cache of pickled nodes. */ | |
412288f1 | 736 | struct streamer_tree_cache_d *reader_cache; |
d7f09764 DN |
737 | }; |
738 | ||
739 | ||
740 | /* In lto-section-in.c */ | |
741 | extern struct lto_input_block * lto_create_simple_input_block ( | |
b8698a0f | 742 | struct lto_file_decl_data *, |
d7f09764 DN |
743 | enum lto_section_type, const char **, size_t *); |
744 | extern void | |
b8698a0f | 745 | lto_destroy_simple_input_block (struct lto_file_decl_data *, |
d7f09764 DN |
746 | enum lto_section_type, |
747 | struct lto_input_block *, const char *, size_t); | |
b8698a0f | 748 | extern void lto_set_in_hooks (struct lto_file_decl_data **, |
d7f09764 DN |
749 | lto_get_section_data_f *, |
750 | lto_free_section_data_f *); | |
751 | extern struct lto_file_decl_data **lto_get_file_decl_data (void); | |
752 | extern const char *lto_get_section_data (struct lto_file_decl_data *, | |
753 | enum lto_section_type, | |
754 | const char *, size_t *); | |
755 | extern void lto_free_section_data (struct lto_file_decl_data *, | |
756 | enum lto_section_type, | |
757 | const char *, const char *, size_t); | |
d7f09764 DN |
758 | extern htab_t lto_create_renaming_table (void); |
759 | extern void lto_record_renamed_decl (struct lto_file_decl_data *, | |
760 | const char *, const char *); | |
761 | extern const char *lto_get_decl_name_mapping (struct lto_file_decl_data *, | |
762 | const char *); | |
763 | extern struct lto_in_decl_state *lto_new_in_decl_state (void); | |
764 | extern void lto_delete_in_decl_state (struct lto_in_decl_state *); | |
765 | extern hashval_t lto_hash_in_decl_state (const void *); | |
766 | extern int lto_eq_in_decl_state (const void *, const void *); | |
767 | extern struct lto_in_decl_state *lto_get_function_in_decl_state ( | |
768 | struct lto_file_decl_data *, tree); | |
82e9d642 | 769 | extern void lto_free_function_in_decl_state (struct lto_in_decl_state *); |
5e20cdc9 | 770 | extern void lto_free_function_in_decl_state_for_node (symtab_node *); |
bc0fe8cb | 771 | extern void lto_section_overrun (struct lto_input_block *) ATTRIBUTE_NORETURN; |
f242c0a5 JH |
772 | extern void lto_value_range_error (const char *, |
773 | HOST_WIDE_INT, HOST_WIDE_INT, | |
774 | HOST_WIDE_INT) ATTRIBUTE_NORETURN; | |
d7f09764 DN |
775 | |
776 | /* In lto-section-out.c */ | |
d7f09764 DN |
777 | extern void lto_begin_section (const char *, bool); |
778 | extern void lto_end_section (void); | |
779 | extern void lto_write_stream (struct lto_output_stream *); | |
d7f09764 DN |
780 | extern void lto_output_data_stream (struct lto_output_stream *, const void *, |
781 | size_t); | |
d7f09764 DN |
782 | extern bool lto_output_decl_index (struct lto_output_stream *, |
783 | struct lto_tree_ref_encoder *, | |
784 | tree, unsigned int *); | |
785 | extern void lto_output_field_decl_index (struct lto_out_decl_state *, | |
786 | struct lto_output_stream *, tree); | |
787 | extern void lto_output_fn_decl_index (struct lto_out_decl_state *, | |
788 | struct lto_output_stream *, tree); | |
789 | extern void lto_output_namespace_decl_index (struct lto_out_decl_state *, | |
790 | struct lto_output_stream *, tree); | |
791 | extern void lto_output_var_decl_index (struct lto_out_decl_state *, | |
792 | struct lto_output_stream *, tree); | |
793 | extern void lto_output_type_decl_index (struct lto_out_decl_state *, | |
794 | struct lto_output_stream *, tree); | |
795 | extern void lto_output_type_ref_index (struct lto_out_decl_state *, | |
796 | struct lto_output_stream *, tree); | |
797 | extern struct lto_simple_output_block *lto_create_simple_output_block ( | |
798 | enum lto_section_type); | |
799 | extern void lto_destroy_simple_output_block (struct lto_simple_output_block *); | |
800 | extern struct lto_out_decl_state *lto_new_out_decl_state (void); | |
801 | extern void lto_delete_out_decl_state (struct lto_out_decl_state *); | |
802 | extern struct lto_out_decl_state *lto_get_out_decl_state (void); | |
803 | extern void lto_push_out_decl_state (struct lto_out_decl_state *); | |
804 | extern struct lto_out_decl_state *lto_pop_out_decl_state (void); | |
805 | extern void lto_record_function_out_decl_state (tree, | |
806 | struct lto_out_decl_state *); | |
bc0fe8cb | 807 | extern void lto_append_block (struct lto_output_stream *); |
d7f09764 DN |
808 | |
809 | ||
810 | /* In lto-streamer.c. */ | |
811 | extern const char *lto_tag_name (enum LTO_tags); | |
812 | extern bitmap lto_bitmap_alloc (void); | |
813 | extern void lto_bitmap_free (bitmap); | |
73ce4d1e | 814 | extern char *lto_get_section_name (int, const char *, struct lto_file_decl_data *); |
b8f4e58f | 815 | extern void print_lto_report (const char *); |
d7f09764 DN |
816 | extern void lto_streamer_init (void); |
817 | extern bool gate_lto_out (void); | |
818 | #ifdef LTO_STREAMER_DEBUG | |
819 | extern void lto_orig_address_map (tree, intptr_t); | |
820 | extern intptr_t lto_orig_address_get (tree); | |
821 | extern void lto_orig_address_remove (tree); | |
822 | #endif | |
823 | extern void lto_check_version (int, int); | |
47c79d56 | 824 | extern void lto_streamer_hooks_init (void); |
d7f09764 DN |
825 | |
826 | /* In lto-streamer-in.c */ | |
d7f09764 | 827 | extern void lto_input_cgraph (struct lto_file_decl_data *, const char *); |
47c79d56 | 828 | extern void lto_reader_init (void); |
5e581212 JH |
829 | extern void lto_input_function_body (struct lto_file_decl_data *, |
830 | struct cgraph_node *, | |
d7f09764 DN |
831 | const char *); |
832 | extern void lto_input_constructors_and_inits (struct lto_file_decl_data *, | |
833 | const char *); | |
398f05da | 834 | extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int); |
d7f09764 DN |
835 | extern struct data_in *lto_data_in_create (struct lto_file_decl_data *, |
836 | const char *, unsigned, | |
9771b263 | 837 | vec<ld_plugin_symbol_resolution_t> ); |
d7f09764 | 838 | extern void lto_data_in_delete (struct data_in *); |
a183b5c7 | 839 | extern void lto_input_data_block (struct lto_input_block *, void *, size_t); |
7cb7d208 | 840 | location_t lto_input_location (struct bitpack_d *, struct data_in *); |
f0efc7aa DN |
841 | tree lto_input_tree_ref (struct lto_input_block *, struct data_in *, |
842 | struct function *, enum LTO_tags); | |
843 | void lto_tag_check_set (enum LTO_tags, int, ...); | |
844 | void lto_init_eh (void); | |
ee03e71d RB |
845 | hashval_t lto_input_scc (struct lto_input_block *, struct data_in *, |
846 | unsigned *, unsigned *); | |
847 | tree lto_input_tree_1 (struct lto_input_block *, struct data_in *, | |
848 | enum LTO_tags, hashval_t hash); | |
b9393656 | 849 | tree lto_input_tree (struct lto_input_block *, struct data_in *); |
d7f09764 DN |
850 | |
851 | ||
852 | /* In lto-streamer-out.c */ | |
853 | extern void lto_register_decl_definition (tree, struct lto_file_decl_data *); | |
854 | extern struct output_block *create_output_block (enum lto_section_type); | |
855 | extern void destroy_output_block (struct output_block *); | |
7e54c608 | 856 | extern void lto_output_tree (struct output_block *, tree, bool, bool); |
49f836ba | 857 | extern void lto_output_toplevel_asms (void); |
fb3f88cc | 858 | extern void produce_asm (struct output_block *ob, tree fn); |
38f4f02f BS |
859 | extern void lto_output (); |
860 | extern void produce_asm_for_decls (); | |
a183b5c7 DN |
861 | void lto_output_decl_state_streams (struct output_block *, |
862 | struct lto_out_decl_state *); | |
863 | void lto_output_decl_state_refs (struct output_block *, | |
864 | struct lto_output_stream *, | |
865 | struct lto_out_decl_state *); | |
7cb7d208 | 866 | void lto_output_location (struct output_block *, struct bitpack_d *, location_t); |
d7f09764 DN |
867 | |
868 | ||
869 | /* In lto-cgraph.c */ | |
9cf7975d | 870 | extern bool asm_nodes_output; |
e75f8f79 | 871 | lto_symtab_encoder_t lto_symtab_encoder_new (bool); |
5e20cdc9 | 872 | int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 873 | void lto_symtab_encoder_delete (lto_symtab_encoder_t); |
5e20cdc9 | 874 | bool lto_symtab_encoder_delete_node (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 875 | bool lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t, |
91fbf0c7 | 876 | struct cgraph_node *); |
f27c1867 | 877 | bool lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t, |
5e20cdc9 | 878 | symtab_node *); |
f27c1867 | 879 | void lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t, |
5e20cdc9 | 880 | symtab_node *); |
91fbf0c7 | 881 | |
7380e6ef | 882 | bool lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t, |
2c8326a5 | 883 | varpool_node *); |
f27c1867 | 884 | void output_symtab (void); |
ab96cc5b | 885 | void input_symtab (void); |
369451ec | 886 | bool referenced_from_other_partition_p (struct ipa_ref_list *, |
f27c1867 | 887 | lto_symtab_encoder_t); |
9a809897 | 888 | bool reachable_from_other_partition_p (struct cgraph_node *, |
f27c1867 | 889 | lto_symtab_encoder_t); |
f3380641 | 890 | bool referenced_from_this_partition_p (struct ipa_ref_list *, |
f27c1867 | 891 | lto_symtab_encoder_t); |
f3380641 | 892 | bool reachable_from_this_partition_p (struct cgraph_node *, |
f27c1867 | 893 | lto_symtab_encoder_t); |
b4661bfe | 894 | lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder); |
d7f09764 DN |
895 | |
896 | ||
897 | /* In lto-symtab.c. */ | |
1a735925 | 898 | extern void lto_symtab_merge_decls (void); |
40a7fe1e | 899 | extern void lto_symtab_merge_symbols (void); |
d7f09764 | 900 | extern tree lto_symtab_prevailing_decl (tree decl); |
d7f09764 DN |
901 | |
902 | ||
903 | /* In lto-opts.c. */ | |
d7f09764 | 904 | extern void lto_write_options (void); |
d7f09764 DN |
905 | |
906 | ||
d7f09764 DN |
907 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
908 | extern struct lto_stats_d lto_stats; | |
909 | ||
910 | /* Section names corresponding to the values of enum lto_section_type. */ | |
911 | extern const char *lto_section_name[]; | |
912 | ||
913 | /* Holds all the out decl states of functions output so far in the | |
914 | current output file. */ | |
9771b263 | 915 | extern vec<lto_out_decl_state_ptr> lto_function_decl_states; |
d7f09764 DN |
916 | |
917 | /* Return true if LTO tag TAG corresponds to a tree code. */ | |
918 | static inline bool | |
919 | lto_tag_is_tree_code_p (enum LTO_tags tag) | |
920 | { | |
15d16c8a | 921 | return tag > LTO_tree_pickle_reference && (unsigned) tag <= MAX_TREE_CODES; |
d7f09764 DN |
922 | } |
923 | ||
924 | ||
925 | /* Return true if LTO tag TAG corresponds to a gimple code. */ | |
926 | static inline bool | |
927 | lto_tag_is_gimple_code_p (enum LTO_tags tag) | |
928 | { | |
15d16c8a RB |
929 | return (unsigned) tag >= NUM_TREE_CODES + 2 |
930 | && (unsigned) tag < 2 + NUM_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE; | |
d7f09764 DN |
931 | } |
932 | ||
933 | ||
934 | /* Return the LTO tag corresponding to gimple code CODE. See enum | |
935 | LTO_tags for details on the conversion. */ | |
936 | static inline enum LTO_tags | |
937 | lto_gimple_code_to_tag (enum gimple_code code) | |
938 | { | |
15d16c8a | 939 | return (enum LTO_tags) ((unsigned) code + NUM_TREE_CODES + 2); |
d7f09764 DN |
940 | } |
941 | ||
942 | ||
943 | /* Return the GIMPLE code corresponding to TAG. See enum LTO_tags for | |
944 | details on the conversion. */ | |
945 | static inline enum gimple_code | |
946 | lto_tag_to_gimple_code (enum LTO_tags tag) | |
947 | { | |
948 | gcc_assert (lto_tag_is_gimple_code_p (tag)); | |
15d16c8a | 949 | return (enum gimple_code) ((unsigned) tag - NUM_TREE_CODES - 2); |
d7f09764 DN |
950 | } |
951 | ||
952 | ||
953 | /* Return the LTO tag corresponding to tree code CODE. See enum | |
954 | LTO_tags for details on the conversion. */ | |
955 | static inline enum LTO_tags | |
956 | lto_tree_code_to_tag (enum tree_code code) | |
957 | { | |
15d16c8a | 958 | return (enum LTO_tags) ((unsigned) code + 2); |
d7f09764 DN |
959 | } |
960 | ||
961 | ||
962 | /* Return the tree code corresponding to TAG. See enum LTO_tags for | |
963 | details on the conversion. */ | |
964 | static inline enum tree_code | |
965 | lto_tag_to_tree_code (enum LTO_tags tag) | |
966 | { | |
967 | gcc_assert (lto_tag_is_tree_code_p (tag)); | |
15d16c8a | 968 | return (enum tree_code) ((unsigned) tag - 2); |
d7f09764 DN |
969 | } |
970 | ||
f0efc7aa DN |
971 | /* Check that tag ACTUAL == EXPECTED. */ |
972 | static inline void | |
973 | lto_tag_check (enum LTO_tags actual, enum LTO_tags expected) | |
974 | { | |
975 | if (actual != expected) | |
976 | internal_error ("bytecode stream: expected tag %s instead of %s", | |
977 | lto_tag_name (expected), lto_tag_name (actual)); | |
978 | } | |
979 | ||
980 | /* Check that tag ACTUAL is in the range [TAG1, TAG2]. */ | |
981 | static inline void | |
982 | lto_tag_check_range (enum LTO_tags actual, enum LTO_tags tag1, | |
983 | enum LTO_tags tag2) | |
984 | { | |
985 | if (actual < tag1 || actual > tag2) | |
986 | internal_error ("bytecode stream: tag %s is not in the expected range " | |
987 | "[%s, %s]", | |
988 | lto_tag_name (actual), | |
989 | lto_tag_name (tag1), | |
990 | lto_tag_name (tag2)); | |
991 | } | |
992 | ||
d7f09764 DN |
993 | /* Initialize an lto_out_decl_buffer ENCODER. */ |
994 | static inline void | |
d579fcda | 995 | lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
d7f09764 | 996 | { |
7c5848b8 | 997 | encoder->tree_hash_table = new pointer_map<unsigned>; |
9771b263 | 998 | encoder->trees.create (0); |
d7f09764 DN |
999 | } |
1000 | ||
1001 | ||
073a8998 | 1002 | /* Destroy an lto_tree_ref_encoder ENCODER by freeing its contents. The |
d7f09764 DN |
1003 | memory used by ENCODER is not freed by this function. */ |
1004 | static inline void | |
1005 | lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) | |
1006 | { | |
1007 | /* Hash table may be delete already. */ | |
1008 | if (encoder->tree_hash_table) | |
7c5848b8 | 1009 | delete encoder->tree_hash_table; |
9771b263 | 1010 | encoder->trees.release (); |
d7f09764 DN |
1011 | } |
1012 | ||
1013 | /* Return the number of trees encoded in ENCODER. */ | |
1014 | static inline unsigned int | |
1015 | lto_tree_ref_encoder_size (struct lto_tree_ref_encoder *encoder) | |
1016 | { | |
9771b263 | 1017 | return encoder->trees.length (); |
d7f09764 DN |
1018 | } |
1019 | ||
1020 | /* Return the IDX-th tree in ENCODER. */ | |
1021 | static inline tree | |
1022 | lto_tree_ref_encoder_get_tree (struct lto_tree_ref_encoder *encoder, | |
1023 | unsigned int idx) | |
1024 | { | |
9771b263 | 1025 | return encoder->trees[idx]; |
d7f09764 DN |
1026 | } |
1027 | ||
f27c1867 JH |
1028 | /* Return number of encoded nodes in ENCODER. */ |
1029 | static inline int | |
1030 | lto_symtab_encoder_size (lto_symtab_encoder_t encoder) | |
1031 | { | |
9771b263 | 1032 | return encoder->nodes.length (); |
7b99cca4 JH |
1033 | } |
1034 | ||
1035 | /* Value used to represent failure of lto_symtab_encoder_lookup. */ | |
1036 | #define LCC_NOT_FOUND (-1) | |
1037 | ||
1038 | /* Look up NODE in encoder. Return NODE's reference if it has been encoded | |
1039 | or LCC_NOT_FOUND if it is not there. */ | |
1040 | ||
1041 | static inline int | |
1042 | lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder, | |
5e20cdc9 | 1043 | symtab_node *node) |
7b99cca4 JH |
1044 | { |
1045 | void **slot = pointer_map_contains (encoder->map, node); | |
1046 | return (slot && *slot ? (size_t) *(slot) - 1 : LCC_NOT_FOUND); | |
f27c1867 JH |
1047 | } |
1048 | ||
1049 | /* Return true if iterator LSE points to nothing. */ | |
1050 | static inline bool | |
1051 | lsei_end_p (lto_symtab_encoder_iterator lsei) | |
1052 | { | |
1053 | return lsei.index >= (unsigned)lto_symtab_encoder_size (lsei.encoder); | |
1054 | } | |
1055 | ||
1056 | /* Advance iterator LSE. */ | |
1057 | static inline void | |
1058 | lsei_next (lto_symtab_encoder_iterator *lsei) | |
1059 | { | |
1060 | lsei->index++; | |
1061 | } | |
1062 | ||
1063 | /* Return the node pointed to by LSI. */ | |
5e20cdc9 | 1064 | static inline symtab_node * |
f27c1867 JH |
1065 | lsei_node (lto_symtab_encoder_iterator lsei) |
1066 | { | |
9771b263 | 1067 | return lsei.encoder->nodes[lsei.index].node; |
f27c1867 JH |
1068 | } |
1069 | ||
1070 | /* Return the node pointed to by LSI. */ | |
1071 | static inline struct cgraph_node * | |
1072 | lsei_cgraph_node (lto_symtab_encoder_iterator lsei) | |
1073 | { | |
9771b263 | 1074 | return cgraph (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1075 | } |
1076 | ||
1077 | /* Return the node pointed to by LSI. */ | |
2c8326a5 | 1078 | static inline varpool_node * |
f27c1867 JH |
1079 | lsei_varpool_node (lto_symtab_encoder_iterator lsei) |
1080 | { | |
9771b263 | 1081 | return varpool (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1082 | } |
1083 | ||
f27c1867 JH |
1084 | /* Return the cgraph node corresponding to REF using ENCODER. */ |
1085 | ||
5e20cdc9 | 1086 | static inline symtab_node * |
f27c1867 JH |
1087 | lto_symtab_encoder_deref (lto_symtab_encoder_t encoder, int ref) |
1088 | { | |
1089 | if (ref == LCC_NOT_FOUND) | |
1090 | return NULL; | |
1091 | ||
9771b263 | 1092 | return encoder->nodes[ref].node; |
f27c1867 JH |
1093 | } |
1094 | ||
1095 | /* Return an iterator to the first node in LSI. */ | |
1096 | static inline lto_symtab_encoder_iterator | |
1097 | lsei_start (lto_symtab_encoder_t encoder) | |
1098 | { | |
1099 | lto_symtab_encoder_iterator lsei; | |
1100 | ||
1101 | lsei.encoder = encoder; | |
1102 | lsei.index = 0; | |
1103 | return lsei; | |
1104 | } | |
1105 | ||
1106 | /* Advance iterator LSE. */ | |
1107 | static inline void | |
1108 | lsei_next_in_partition (lto_symtab_encoder_iterator *lsei) | |
1109 | { | |
1110 | lsei_next (lsei); | |
1111 | while (!lsei_end_p (*lsei) | |
1112 | && !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))) | |
1113 | lsei_next (lsei); | |
1114 | } | |
1115 | ||
1116 | /* Return an iterator to the first node in LSI. */ | |
1117 | static inline lto_symtab_encoder_iterator | |
1118 | lsei_start_in_partition (lto_symtab_encoder_t encoder) | |
1119 | { | |
1120 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1121 | ||
1122 | if (lsei_end_p (lsei)) | |
1123 | return lsei; | |
1124 | if (!lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) | |
1125 | lsei_next_in_partition (&lsei); | |
1126 | ||
1127 | return lsei; | |
1128 | } | |
1129 | ||
1130 | /* Advance iterator LSE. */ | |
1131 | static inline void | |
1132 | lsei_next_function_in_partition (lto_symtab_encoder_iterator *lsei) | |
1133 | { | |
1134 | lsei_next (lsei); | |
1135 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1136 | && (!is_a <cgraph_node *> (lsei_node (*lsei)) |
f27c1867 JH |
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_function_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; | |
7de90a6c | 1149 | if (!is_a <cgraph_node *> (lsei_node (lsei)) |
f27c1867 JH |
1150 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1151 | lsei_next_function_in_partition (&lsei); | |
1152 | ||
1153 | return lsei; | |
1154 | } | |
1155 | ||
1156 | /* Advance iterator LSE. */ | |
1157 | static inline void | |
1158 | lsei_next_variable_in_partition (lto_symtab_encoder_iterator *lsei) | |
1159 | { | |
1160 | lsei_next (lsei); | |
1161 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1162 | && (!is_a <varpool_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1163 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1164 | lsei_next (lsei); | |
1165 | } | |
1166 | ||
1167 | /* Return an iterator to the first node in LSI. */ | |
1168 | static inline lto_symtab_encoder_iterator | |
1169 | lsei_start_variable_in_partition (lto_symtab_encoder_t encoder) | |
1170 | { | |
1171 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1172 | ||
1173 | if (lsei_end_p (lsei)) | |
1174 | return lsei; | |
7de90a6c | 1175 | if (!is_a <varpool_node *> (lsei_node (lsei)) |
f27c1867 JH |
1176 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1177 | lsei_next_variable_in_partition (&lsei); | |
1178 | ||
1179 | return lsei; | |
1180 | } | |
1181 | ||
d7f09764 DN |
1182 | DEFINE_DECL_STREAM_FUNCS (TYPE, type) |
1183 | DEFINE_DECL_STREAM_FUNCS (FIELD_DECL, field_decl) | |
1184 | DEFINE_DECL_STREAM_FUNCS (FN_DECL, fn_decl) | |
1185 | DEFINE_DECL_STREAM_FUNCS (VAR_DECL, var_decl) | |
1186 | DEFINE_DECL_STREAM_FUNCS (TYPE_DECL, type_decl) | |
1187 | DEFINE_DECL_STREAM_FUNCS (NAMESPACE_DECL, namespace_decl) | |
1188 | DEFINE_DECL_STREAM_FUNCS (LABEL_DECL, label_decl) | |
1189 | ||
1190 | #endif /* GCC_LTO_STREAMER_H */ |