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d7f09764 DN |
1 | /* Data structures and declarations used for reading and writing |
2 | GIMPLE to a file stream. | |
3 | ||
5624e564 | 4 | Copyright (C) 2009-2015 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" | |
d7f09764 | 27 | #include "target.h" |
5c4f225f | 28 | #include "alloc-pool.h" |
db0bf14f | 29 | #include "gcov-io.h" |
f0efc7aa | 30 | #include "diagnostic.h" |
47c79d56 | 31 | |
d7f09764 DN |
32 | /* Define when debugging the LTO streamer. This causes the writer |
33 | to output the numeric value for the memory address of the tree node | |
34 | being emitted. When debugging a problem in the reader, check the | |
35 | original address that the writer was emitting using lto_orig_address_get. | |
36 | With this value, set a breakpoint in the writer (e.g., lto_output_tree) | |
37 | to trace how the faulty node is being emitted. */ | |
38 | /* #define LTO_STREAMER_DEBUG 1 */ | |
39 | ||
40 | /* The encoding for a function consists of the following sections: | |
41 | ||
42 | 1) The header. | |
43 | 2) FIELD_DECLS. | |
44 | 3) FUNCTION_DECLS. | |
45 | 4) global VAR_DECLS. | |
46 | 5) type_decls | |
47 | 6) types. | |
48 | 7) Names for the labels that have names | |
49 | 8) The SSA names. | |
50 | 9) The control flow graph. | |
51 | 10-11)Gimple for local decls. | |
52 | 12) Gimple for the function. | |
53 | 13) Strings. | |
54 | ||
55 | 1) THE HEADER. | |
56 | 2-6) THE GLOBAL DECLS AND TYPES. | |
57 | ||
58 | The global decls and types are encoded in the same way. For each | |
59 | entry, there is word with the offset within the section to the | |
60 | entry. | |
61 | ||
b8698a0f | 62 | 7) THE LABEL NAMES. |
d7f09764 DN |
63 | |
64 | Since most labels do not have names, this section my be of zero | |
65 | length. It consists of an array of string table references, one | |
66 | per label. In the lto code, the labels are given either | |
67 | positive or negative indexes. the positive ones have names and | |
68 | the negative ones do not. The positive index can be used to | |
69 | find the name in this array. | |
70 | ||
b8698a0f | 71 | 9) THE CFG. |
d7f09764 DN |
72 | |
73 | 10) Index into the local decls. Since local decls can have local | |
74 | decls inside them, they must be read in randomly in order to | |
b8698a0f | 75 | properly restore them. |
d7f09764 DN |
76 | |
77 | 11-12) GIMPLE FOR THE LOCAL DECLS AND THE FUNCTION BODY. | |
78 | ||
79 | The gimple consists of a set of records. | |
80 | ||
81 | THE FUNCTION | |
b8698a0f | 82 | |
d7f09764 DN |
83 | At the top level of (8) is the function. It consists of five |
84 | pieces: | |
85 | ||
86 | LTO_function - The tag. | |
87 | eh tree - This is all of the exception handling regions | |
88 | put out in a post order traversial of the | |
89 | tree. Siblings are output as lists terminated | |
90 | by a 0. The set of fields matches the fields | |
91 | defined in except.c. | |
92 | ||
93 | last_basic_block - in uleb128 form. | |
94 | ||
95 | basic blocks - This is the set of basic blocks. | |
96 | ||
97 | zero - The termination of the basic blocks. | |
98 | ||
99 | BASIC BLOCKS | |
100 | ||
101 | There are two forms of basic blocks depending on if they are | |
102 | empty or not. | |
103 | ||
104 | The basic block consists of: | |
105 | ||
106 | LTO_bb1 or LTO_bb0 - The tag. | |
107 | ||
108 | bb->index - the index in uleb128 form. | |
109 | ||
110 | #succs - The number of successors un uleb128 form. | |
111 | ||
112 | the successors - For each edge, a pair. The first of the | |
113 | pair is the index of the successor in | |
114 | uleb128 form and the second are the flags in | |
115 | uleb128 form. | |
116 | ||
117 | the statements - A gimple tree, as described above. | |
118 | These are only present for LTO_BB1. | |
119 | Following each statement is an optional | |
120 | exception handling record LTO_eh_region | |
121 | which contains the region number (for | |
122 | regions >= 0). | |
123 | ||
124 | zero - This is only present for LTO_BB1 and is used | |
125 | to terminate the statements and exception | |
126 | regions within this block. | |
127 | ||
128 | 12) STRINGS | |
129 | ||
130 | String are represented in the table as pairs, a length in ULEB128 | |
131 | form followed by the data for the string. */ | |
132 | ||
b9ed2c2c | 133 | #define LTO_major_version 4 |
15b25b24 | 134 | #define LTO_minor_version 0 |
d7f09764 DN |
135 | |
136 | typedef unsigned char lto_decl_flags_t; | |
137 | ||
138 | ||
d7f09764 DN |
139 | /* Tags representing the various IL objects written to the bytecode file |
140 | (GIMPLE statements, basic blocks, EH regions, tree nodes, etc). | |
141 | ||
142 | NOTE, when adding new LTO tags, also update lto_tag_name. */ | |
b8698a0f | 143 | enum LTO_tags |
d7f09764 DN |
144 | { |
145 | LTO_null = 0, | |
146 | ||
15d16c8a RB |
147 | /* Special for streamer. Reference to previously-streamed node. */ |
148 | LTO_tree_pickle_reference, | |
149 | ||
d7f09764 DN |
150 | /* Reserve enough entries to fit all the tree and gimple codes handled |
151 | by the streamer. This guarantees that: | |
152 | ||
153 | 1- Given a tree code C: | |
154 | enum LTO_tags tag == C + 1 | |
155 | ||
156 | 2- Given a gimple code C: | |
157 | enum LTO_tags tag == C + NUM_TREE_CODES + 1 | |
158 | ||
159 | Conversely, to map between LTO tags and tree/gimple codes, the | |
160 | reverse operation must be applied. */ | |
07233947 | 161 | LTO_bb0 = 1 + MAX_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE, |
d7f09764 DN |
162 | LTO_bb1, |
163 | ||
164 | /* EH region holding the previous statement. */ | |
165 | LTO_eh_region, | |
166 | ||
167 | /* An MD or NORMAL builtin. Only the code and class are streamed out. */ | |
168 | LTO_builtin_decl, | |
169 | ||
c61f8c3b RG |
170 | /* Shared INTEGER_CST node. */ |
171 | LTO_integer_cst, | |
172 | ||
d7f09764 DN |
173 | /* Function body. */ |
174 | LTO_function, | |
175 | ||
176 | /* EH table. */ | |
177 | LTO_eh_table, | |
178 | ||
179 | /* EH region types. These mirror enum eh_region_type. */ | |
180 | LTO_ert_cleanup, | |
181 | LTO_ert_try, | |
182 | LTO_ert_allowed_exceptions, | |
183 | LTO_ert_must_not_throw, | |
184 | ||
185 | /* EH landing pad. */ | |
186 | LTO_eh_landing_pad, | |
187 | ||
188 | /* EH try/catch node. */ | |
189 | LTO_eh_catch, | |
190 | ||
ee03e71d RB |
191 | /* Special for global streamer. A blob of unnamed tree nodes. */ |
192 | LTO_tree_scc, | |
193 | ||
d7f09764 DN |
194 | /* References to indexable tree nodes. These objects are stored in |
195 | tables that are written separately from the function bodies that | |
196 | reference them. This way they can be instantiated even when the | |
197 | referencing functions aren't (e.g., during WPA) and it also allows | |
198 | functions to be copied from one file to another without having | |
199 | to unpickle the body first (the references are location | |
200 | independent). | |
201 | ||
202 | NOTE, do not regroup these values as the grouping is exposed | |
203 | in the range checks done in lto_input_tree. */ | |
204 | LTO_field_decl_ref, /* Do not change. */ | |
205 | LTO_function_decl_ref, | |
206 | LTO_label_decl_ref, | |
207 | LTO_namespace_decl_ref, | |
208 | LTO_result_decl_ref, | |
209 | LTO_ssa_name_ref, | |
210 | LTO_type_decl_ref, | |
211 | LTO_type_ref, | |
212 | LTO_const_decl_ref, | |
213 | LTO_imported_decl_ref, | |
6be14c0e | 214 | LTO_translation_unit_decl_ref, |
5f673c6a TB |
215 | LTO_global_decl_ref, |
216 | LTO_namelist_decl_ref, /* Do not change. */ | |
d7f09764 DN |
217 | |
218 | /* This tag must always be last. */ | |
219 | LTO_NUM_TAGS | |
220 | }; | |
221 | ||
222 | ||
223 | /* Set of section types that are in an LTO file. This list will grow | |
224 | as the number of IPA passes grows since each IPA pass will need its | |
225 | own section type to store its summary information. | |
226 | ||
227 | When adding a new section type, you must also extend the | |
228 | LTO_SECTION_NAME array in lto-section-in.c. */ | |
229 | enum lto_section_type | |
230 | { | |
231 | LTO_section_decls = 0, | |
232 | LTO_section_function_body, | |
233 | LTO_section_static_initializer, | |
ab96cc5b | 234 | LTO_section_symtab, |
369451ec | 235 | LTO_section_refs, |
49f836ba | 236 | LTO_section_asm, |
fb3f88cc | 237 | LTO_section_jump_functions, |
d7f09764 DN |
238 | LTO_section_ipa_pure_const, |
239 | LTO_section_ipa_reference, | |
0208f7da | 240 | LTO_section_ipa_profile, |
ab96cc5b | 241 | LTO_section_symtab_nodes, |
d7f09764 | 242 | LTO_section_opts, |
922f15c2 | 243 | LTO_section_cgraph_opt_sum, |
10a5dd5d | 244 | LTO_section_inline_summary, |
2c9561b5 | 245 | LTO_section_ipcp_transform, |
b84d4347 | 246 | LTO_section_ipa_icf, |
ec6fe917 | 247 | LTO_section_offload_table, |
db847fa8 | 248 | LTO_section_mode_table, |
d7f09764 DN |
249 | LTO_N_SECTION_TYPES /* Must be last. */ |
250 | }; | |
251 | ||
252 | /* Indices to the various function, type and symbol streams. */ | |
84562394 | 253 | enum lto_decl_stream_e_t |
d7f09764 DN |
254 | { |
255 | LTO_DECL_STREAM_TYPE = 0, /* Must be first. */ | |
256 | LTO_DECL_STREAM_FIELD_DECL, | |
257 | LTO_DECL_STREAM_FN_DECL, | |
258 | LTO_DECL_STREAM_VAR_DECL, | |
259 | LTO_DECL_STREAM_TYPE_DECL, | |
260 | LTO_DECL_STREAM_NAMESPACE_DECL, | |
261 | LTO_DECL_STREAM_LABEL_DECL, | |
262 | LTO_N_DECL_STREAMS | |
84562394 | 263 | }; |
d7f09764 DN |
264 | |
265 | typedef enum ld_plugin_symbol_resolution ld_plugin_symbol_resolution_t; | |
d7f09764 DN |
266 | |
267 | ||
268 | /* Macro to define convenience functions for type and decl streams | |
b8698a0f | 269 | in lto_file_decl_data. */ |
d7f09764 DN |
270 | #define DEFINE_DECL_STREAM_FUNCS(UPPER_NAME, name) \ |
271 | static inline tree \ | |
272 | lto_file_decl_data_get_ ## name (struct lto_file_decl_data *data, \ | |
273 | unsigned int idx) \ | |
274 | { \ | |
275 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
9c71e9df | 276 | return (*state->streams[LTO_DECL_STREAM_## UPPER_NAME])[idx]; \ |
d7f09764 DN |
277 | } \ |
278 | \ | |
279 | static inline unsigned int \ | |
280 | lto_file_decl_data_num_ ## name ## s (struct lto_file_decl_data *data) \ | |
281 | { \ | |
282 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
9c71e9df | 283 | return vec_safe_length (state->streams[LTO_DECL_STREAM_## UPPER_NAME]); \ |
d7f09764 DN |
284 | } |
285 | ||
286 | ||
287 | /* Return a char pointer to the start of a data stream for an lto pass | |
288 | or function. The first parameter is the file data that contains | |
289 | the information. The second parameter is the type of information | |
290 | to be obtained. The third parameter is the name of the function | |
b8698a0f | 291 | and is only used when finding a function body; otherwise it is |
d7f09764 | 292 | NULL. The fourth parameter is the length of the data returned. */ |
b8698a0f | 293 | typedef const char* (lto_get_section_data_f) (struct lto_file_decl_data *, |
d7f09764 | 294 | enum lto_section_type, |
b8698a0f | 295 | const char *, |
d7f09764 DN |
296 | size_t *); |
297 | ||
298 | /* Return the data found from the above call. The first three | |
299 | parameters are the same as above. The fourth parameter is the data | |
073a8998 | 300 | itself and the fifth is the length of the data. */ |
b8698a0f | 301 | typedef void (lto_free_section_data_f) (struct lto_file_decl_data *, |
d7f09764 DN |
302 | enum lto_section_type, |
303 | const char *, | |
304 | const char *, | |
305 | size_t); | |
306 | ||
eaeec5ec JH |
307 | /* The location cache holds expanded locations for streamed in trees. |
308 | This is done to reduce memory usage of libcpp linemap that strongly preffers | |
309 | locations to be inserted in the soruce order. */ | |
310 | ||
311 | class lto_location_cache | |
312 | { | |
313 | public: | |
314 | /* Apply all changes in location cache. Add locations into linemap and patch | |
315 | trees. */ | |
316 | bool apply_location_cache (); | |
317 | /* Tree merging did not suceed; mark all changes in the cache as accepted. */ | |
318 | void accept_location_cache (); | |
319 | /* Tree merging did suceed; throw away recent changes. */ | |
320 | void revert_location_cache (); | |
321 | void input_location (location_t *loc, struct bitpack_d *bp, | |
322 | struct data_in *data_in); | |
323 | lto_location_cache () | |
324 | : loc_cache (), accepted_length (0), current_file (NULL), current_line (0), | |
325 | current_col (0), current_loc (UNKNOWN_LOCATION) | |
326 | { | |
327 | gcc_assert (!current_cache); | |
328 | current_cache = this; | |
329 | } | |
330 | ~lto_location_cache () | |
331 | { | |
332 | apply_location_cache (); | |
333 | gcc_assert (current_cache == this); | |
334 | current_cache = NULL; | |
335 | } | |
336 | ||
337 | /* There can be at most one instance of location cache (combining multiple | |
338 | would bring it out of sync with libcpp linemap); point to current | |
339 | one. */ | |
340 | static lto_location_cache *current_cache; | |
341 | ||
342 | private: | |
343 | static int cmp_loc (const void *pa, const void *pb); | |
344 | ||
345 | struct cached_location | |
346 | { | |
347 | const char *file; | |
348 | location_t *loc; | |
349 | int line, col; | |
350 | }; | |
351 | ||
352 | /* The location cache. */ | |
353 | ||
50cfd44e | 354 | auto_vec<cached_location> loc_cache; |
eaeec5ec JH |
355 | |
356 | /* Accepted entries are ones used by trees that are known to be not unified | |
357 | by tree merging. */ | |
358 | ||
359 | int accepted_length; | |
360 | ||
361 | /* Bookkeeping to remember state in between calls to lto_apply_location_cache | |
362 | When streaming gimple, the location cache is not used and thus | |
363 | lto_apply_location_cache happens per location basis. It is then | |
364 | useful to avoid redundant calls of linemap API. */ | |
365 | ||
366 | const char *current_file; | |
367 | int current_line; | |
368 | int current_col; | |
369 | location_t current_loc; | |
370 | }; | |
371 | ||
d7f09764 | 372 | /* Structure used as buffer for reading an LTO file. */ |
207c68cd | 373 | class lto_input_block |
d7f09764 | 374 | { |
207c68cd RB |
375 | public: |
376 | /* Special constructor for the string table, it abuses this to | |
377 | do random access but use the uhwi decoder. */ | |
db847fa8 JJ |
378 | lto_input_block (const char *data_, unsigned int p_, unsigned int len_, |
379 | const unsigned char *mode_table_) | |
380 | : data (data_), mode_table (mode_table_), p (p_), len (len_) {} | |
381 | lto_input_block (const char *data_, unsigned int len_, | |
382 | const unsigned char *mode_table_) | |
383 | : data (data_), mode_table (mode_table_), p (0), len (len_) {} | |
207c68cd | 384 | |
d7f09764 | 385 | const char *data; |
db847fa8 | 386 | const unsigned char *mode_table; |
d7f09764 DN |
387 | unsigned int p; |
388 | unsigned int len; | |
389 | }; | |
390 | ||
d7f09764 DN |
391 | |
392 | /* The is the first part of the record for a function or constructor | |
393 | in the .o file. */ | |
394 | struct lto_header | |
395 | { | |
396 | int16_t major_version; | |
397 | int16_t minor_version; | |
d7f09764 DN |
398 | }; |
399 | ||
207c68cd RB |
400 | /* The is the first part of the record in an LTO file for many of the |
401 | IPA passes. */ | |
402 | struct lto_simple_header : lto_header | |
d7f09764 | 403 | { |
207c68cd RB |
404 | /* Size of main gimple body of function. */ |
405 | int32_t main_size; | |
406 | }; | |
d7f09764 | 407 | |
207c68cd RB |
408 | struct lto_simple_header_with_strings : lto_simple_header |
409 | { | |
d7f09764 DN |
410 | /* Size of main gimple body of function. */ |
411 | int32_t main_size; | |
412 | ||
413 | /* Size of the string table. */ | |
414 | int32_t string_size; | |
415 | }; | |
416 | ||
207c68cd RB |
417 | /* The header for a function body. */ |
418 | struct lto_function_header : lto_simple_header_with_strings | |
419 | { | |
420 | /* Size of the cfg. */ | |
421 | int32_t cfg_size; | |
422 | }; | |
423 | ||
d7f09764 DN |
424 | |
425 | /* Structure describing a symbol section. */ | |
207c68cd | 426 | struct lto_decl_header : lto_simple_header_with_strings |
d7f09764 | 427 | { |
d7f09764 DN |
428 | /* Size of region for decl state. */ |
429 | int32_t decl_state_size; | |
430 | ||
431 | /* Number of nodes in globals stream. */ | |
432 | int32_t num_nodes; | |
49f836ba JB |
433 | }; |
434 | ||
435 | ||
d7f09764 DN |
436 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
437 | struct lto_stats_d | |
438 | { | |
439 | unsigned HOST_WIDE_INT num_input_cgraph_nodes; | |
7b99cca4 | 440 | unsigned HOST_WIDE_INT num_output_symtab_nodes; |
d7f09764 DN |
441 | unsigned HOST_WIDE_INT num_input_files; |
442 | unsigned HOST_WIDE_INT num_output_files; | |
443 | unsigned HOST_WIDE_INT num_cgraph_partitions; | |
444 | unsigned HOST_WIDE_INT section_size[LTO_N_SECTION_TYPES]; | |
445 | unsigned HOST_WIDE_INT num_function_bodies; | |
446 | unsigned HOST_WIDE_INT num_trees[NUM_TREE_CODES]; | |
447 | unsigned HOST_WIDE_INT num_output_il_bytes; | |
448 | unsigned HOST_WIDE_INT num_compressed_il_bytes; | |
449 | unsigned HOST_WIDE_INT num_input_il_bytes; | |
450 | unsigned HOST_WIDE_INT num_uncompressed_il_bytes; | |
ee03e71d RB |
451 | unsigned HOST_WIDE_INT num_tree_bodies_output; |
452 | unsigned HOST_WIDE_INT num_pickle_refs_output; | |
d7f09764 DN |
453 | }; |
454 | ||
7b99cca4 | 455 | /* Entry of LTO symtab encoder. */ |
84562394 | 456 | struct lto_encoder_entry |
7b99cca4 | 457 | { |
5e20cdc9 | 458 | symtab_node *node; |
7b99cca4 JH |
459 | /* Is the node in this partition (i.e. ltrans of this partition will |
460 | be responsible for outputting it)? */ | |
461 | unsigned int in_partition:1; | |
462 | /* Do we encode body in this partition? */ | |
463 | unsigned int body:1; | |
464 | /* Do we encode initializer in this partition? | |
465 | For example the readonly variable initializers are encoded to aid | |
466 | constant folding even if they are not in the partition. */ | |
467 | unsigned int initializer:1; | |
84562394 | 468 | }; |
7b99cca4 | 469 | |
7b99cca4 | 470 | |
d7f09764 | 471 | /* Encoder data structure used to stream callgraph nodes. */ |
7380e6ef | 472 | struct lto_symtab_encoder_d |
d7f09764 | 473 | { |
9771b263 | 474 | vec<lto_encoder_entry> nodes; |
b787e7a2 | 475 | hash_map<symtab_node *, size_t> *map; |
2f41ecf5 | 476 | }; |
7380e6ef JH |
477 | |
478 | typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t; | |
2f41ecf5 | 479 | |
f27c1867 | 480 | /* Iterator structure for cgraph node sets. */ |
84562394 | 481 | struct lto_symtab_encoder_iterator |
703e95cf | 482 | { |
f27c1867 JH |
483 | lto_symtab_encoder_t encoder; |
484 | unsigned index; | |
84562394 | 485 | }; |
f27c1867 JH |
486 | |
487 | ||
488 | ||
d7f09764 DN |
489 | /* The lto_tree_ref_encoder struct is used to encode trees into indices. */ |
490 | ||
491 | struct lto_tree_ref_encoder | |
492 | { | |
1eb68d2d | 493 | hash_map<tree, unsigned> *tree_hash_table; /* Maps pointers to indices. */ |
d579fcda | 494 | vec<tree> trees; /* Maps indices to pointers. */ |
d7f09764 DN |
495 | }; |
496 | ||
497 | ||
498 | /* Structure to hold states of input scope. */ | |
907dadbd | 499 | struct GTY((for_user)) lto_in_decl_state |
d7f09764 DN |
500 | { |
501 | /* Array of lto_in_decl_buffers to store type and decls streams. */ | |
9c71e9df | 502 | vec<tree, va_gc> *streams[LTO_N_DECL_STREAMS]; |
d7f09764 DN |
503 | |
504 | /* If this in-decl state is associated with a function. FN_DECL | |
505 | point to the FUNCTION_DECL. */ | |
506 | tree fn_decl; | |
507 | }; | |
508 | ||
509 | typedef struct lto_in_decl_state *lto_in_decl_state_ptr; | |
510 | ||
907dadbd TS |
511 | struct decl_state_hasher : ggc_hasher<lto_in_decl_state *> |
512 | { | |
513 | static hashval_t | |
514 | hash (lto_in_decl_state *s) | |
515 | { | |
516 | return htab_hash_pointer (s->fn_decl); | |
517 | } | |
518 | ||
519 | static bool | |
520 | equal (lto_in_decl_state *a, lto_in_decl_state *b) | |
521 | { | |
522 | return a->fn_decl == b->fn_decl; | |
523 | } | |
524 | }; | |
d7f09764 DN |
525 | |
526 | /* The structure that holds all of the vectors of global types, | |
527 | decls and cgraph nodes used in the serialization of this file. */ | |
528 | struct lto_out_decl_state | |
529 | { | |
530 | /* The buffers contain the sets of decls of various kinds and types we have | |
531 | seen so far and the indexes assigned to them. */ | |
532 | struct lto_tree_ref_encoder streams[LTO_N_DECL_STREAMS]; | |
533 | ||
534 | /* Encoder for cgraph nodes. */ | |
7380e6ef | 535 | lto_symtab_encoder_t symtab_node_encoder; |
2f41ecf5 | 536 | |
d7f09764 DN |
537 | /* If this out-decl state belongs to a function, fn_decl points to that |
538 | function. Otherwise, it is NULL. */ | |
539 | tree fn_decl; | |
540 | }; | |
541 | ||
542 | typedef struct lto_out_decl_state *lto_out_decl_state_ptr; | |
543 | ||
d7f09764 | 544 | |
aed7d7cf AK |
545 | /* Compact representation of a index <-> resolution pair. Unpacked to an |
546 | vector later. */ | |
547 | struct res_pair | |
548 | { | |
549 | ld_plugin_symbol_resolution_t res; | |
550 | unsigned index; | |
551 | }; | |
aed7d7cf | 552 | |
aed7d7cf | 553 | |
d7f09764 DN |
554 | /* One of these is allocated for each object file that being compiled |
555 | by lto. This structure contains the tables that are needed by the | |
556 | serialized functions and ipa passes to connect themselves to the | |
557 | global types and decls as they are reconstituted. */ | |
49ba8180 | 558 | struct GTY(()) lto_file_decl_data |
d7f09764 DN |
559 | { |
560 | /* Decl state currently used. */ | |
561 | struct lto_in_decl_state *current_decl_state; | |
562 | ||
563 | /* Decl state corresponding to regions outside of any functions | |
564 | in the compilation unit. */ | |
565 | struct lto_in_decl_state *global_decl_state; | |
566 | ||
567 | /* Table of cgraph nodes present in this file. */ | |
7380e6ef | 568 | lto_symtab_encoder_t GTY((skip)) symtab_node_encoder; |
2f41ecf5 | 569 | |
d7f09764 | 570 | /* Hash table maps lto-related section names to location in file. */ |
907dadbd | 571 | hash_table<decl_state_hasher> *function_decl_states; |
d7f09764 DN |
572 | |
573 | /* The .o file that these offsets relate to. */ | |
49ba8180 | 574 | const char *GTY((skip)) file_name; |
d7f09764 | 575 | |
d7f09764 | 576 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 577 | htab_t GTY((skip)) section_hash_table; |
d7f09764 DN |
578 | |
579 | /* Hash new name of renamed global declaration to its original name. */ | |
49ba8180 | 580 | htab_t GTY((skip)) renaming_hash_table; |
73ce4d1e AK |
581 | |
582 | /* Linked list used temporarily in reader */ | |
583 | struct lto_file_decl_data *next; | |
584 | ||
585 | /* Sub ID for merged objects. */ | |
dde8b360 | 586 | unsigned HOST_WIDE_INT id; |
73ce4d1e AK |
587 | |
588 | /* Symbol resolutions for this file */ | |
9771b263 | 589 | vec<res_pair> GTY((skip)) respairs; |
aed7d7cf | 590 | unsigned max_index; |
db0bf14f JH |
591 | |
592 | struct gcov_ctr_summary GTY((skip)) profile_info; | |
bbf9ad07 JH |
593 | |
594 | /* Map assigning declarations their resolutions. */ | |
39c8aaa4 | 595 | hash_map<tree, ld_plugin_symbol_resolution> * GTY((skip)) resolution_map; |
db847fa8 JJ |
596 | |
597 | /* Mode translation table. */ | |
598 | const unsigned char *mode_table; | |
d7f09764 DN |
599 | }; |
600 | ||
a9429e29 LB |
601 | typedef struct lto_file_decl_data *lto_file_decl_data_ptr; |
602 | ||
d7f09764 DN |
603 | struct lto_char_ptr_base |
604 | { | |
605 | char *ptr; | |
606 | }; | |
607 | ||
608 | /* An incore byte stream to buffer the various parts of the function. | |
609 | The entire structure should be zeroed when created. The record | |
610 | consists of a set of blocks. The first sizeof (ptr) bytes are used | |
611 | as a chain, and the rest store the bytes to be written. */ | |
612 | struct lto_output_stream | |
613 | { | |
614 | /* The pointer to the first block in the stream. */ | |
615 | struct lto_char_ptr_base * first_block; | |
616 | ||
617 | /* The pointer to the last and current block in the stream. */ | |
618 | struct lto_char_ptr_base * current_block; | |
619 | ||
620 | /* The pointer to where the next char should be written. */ | |
621 | char * current_pointer; | |
622 | ||
623 | /* The number of characters left in the current block. */ | |
624 | unsigned int left_in_block; | |
625 | ||
626 | /* The block size of the last block allocated. */ | |
627 | unsigned int block_size; | |
628 | ||
629 | /* The total number of characters written. */ | |
630 | unsigned int total_size; | |
631 | }; | |
632 | ||
d7f09764 DN |
633 | /* A simple output block. This can be used for simple IPA passes that |
634 | do not need more than one stream. */ | |
635 | struct lto_simple_output_block | |
636 | { | |
637 | enum lto_section_type section_type; | |
638 | struct lto_out_decl_state *decl_state; | |
639 | ||
640 | /* The stream that the main tree codes are written to. */ | |
641 | struct lto_output_stream *main_stream; | |
642 | }; | |
643 | ||
4a8fb1a1 LC |
644 | /* String hashing. */ |
645 | ||
646 | struct string_slot | |
647 | { | |
648 | const char *s; | |
649 | int len; | |
650 | unsigned int slot_num; | |
651 | }; | |
652 | ||
653 | /* Hashtable helpers. */ | |
654 | ||
655 | struct string_slot_hasher : typed_noop_remove <string_slot> | |
656 | { | |
67f58944 TS |
657 | typedef string_slot *value_type; |
658 | typedef string_slot *compare_type; | |
659 | static inline hashval_t hash (const string_slot *); | |
660 | static inline bool equal (const string_slot *, const string_slot *); | |
4a8fb1a1 LC |
661 | }; |
662 | ||
663 | /* Returns a hash code for DS. Adapted from libiberty's htab_hash_string | |
664 | to support strings that may not end in '\0'. */ | |
665 | ||
666 | inline hashval_t | |
67f58944 | 667 | string_slot_hasher::hash (const string_slot *ds) |
4a8fb1a1 LC |
668 | { |
669 | hashval_t r = ds->len; | |
670 | int i; | |
671 | ||
672 | for (i = 0; i < ds->len; i++) | |
673 | r = r * 67 + (unsigned)ds->s[i] - 113; | |
674 | return r; | |
675 | } | |
676 | ||
677 | /* Returns nonzero if DS1 and DS2 are equal. */ | |
678 | ||
679 | inline bool | |
67f58944 | 680 | string_slot_hasher::equal (const string_slot *ds1, const string_slot *ds2) |
4a8fb1a1 LC |
681 | { |
682 | if (ds1->len == ds2->len) | |
683 | return memcmp (ds1->s, ds2->s, ds1->len) == 0; | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
d7f09764 DN |
688 | /* Data structure holding all the data and descriptors used when writing |
689 | an LTO file. */ | |
690 | struct output_block | |
691 | { | |
692 | enum lto_section_type section_type; | |
693 | struct lto_out_decl_state *decl_state; | |
694 | ||
695 | /* The stream that the main tree codes are written to. */ | |
696 | struct lto_output_stream *main_stream; | |
697 | ||
698 | /* The stream that contains the string table. */ | |
699 | struct lto_output_stream *string_stream; | |
700 | ||
701 | /* The stream that contains the cfg. */ | |
702 | struct lto_output_stream *cfg_stream; | |
703 | ||
704 | /* The hash table that contains the set of strings we have seen so | |
705 | far and the indexes assigned to them. */ | |
c203e8a7 | 706 | hash_table<string_slot_hasher> *string_hash_table; |
d7f09764 | 707 | |
0b83e688 | 708 | /* The current symbol that we are currently serializing. Null |
d7f09764 | 709 | if we are serializing something else. */ |
f473c082 | 710 | symtab_node *symbol; |
d7f09764 DN |
711 | |
712 | /* These are the last file and line that were seen in the stream. | |
713 | If the current node differs from these, it needs to insert | |
714 | something into the stream and fix these up. */ | |
715 | const char *current_file; | |
716 | int current_line; | |
717 | int current_col; | |
718 | ||
d7f09764 | 719 | /* Cache of nodes written in this section. */ |
412288f1 | 720 | struct streamer_tree_cache_d *writer_cache; |
fac009a8 JH |
721 | |
722 | /* All data persistent across whole duration of output block | |
723 | can go here. */ | |
724 | struct obstack obstack; | |
d7f09764 DN |
725 | }; |
726 | ||
727 | ||
728 | /* Data and descriptors used when reading from an LTO file. */ | |
729 | struct data_in | |
730 | { | |
731 | /* The global decls and types. */ | |
732 | struct lto_file_decl_data *file_data; | |
733 | ||
d7f09764 DN |
734 | /* The string table. */ |
735 | const char *strings; | |
736 | ||
737 | /* The length of the string table. */ | |
738 | unsigned int strings_len; | |
739 | ||
d7f09764 | 740 | /* Maps each reference number to the resolution done by the linker. */ |
9771b263 | 741 | vec<ld_plugin_symbol_resolution_t> globals_resolution; |
d7f09764 DN |
742 | |
743 | /* Cache of pickled nodes. */ | |
412288f1 | 744 | struct streamer_tree_cache_d *reader_cache; |
eaeec5ec JH |
745 | |
746 | /* Cache of source code location. */ | |
747 | lto_location_cache location_cache; | |
d7f09764 DN |
748 | }; |
749 | ||
750 | ||
751 | /* In lto-section-in.c */ | |
752 | extern struct lto_input_block * lto_create_simple_input_block ( | |
b8698a0f | 753 | struct lto_file_decl_data *, |
d7f09764 DN |
754 | enum lto_section_type, const char **, size_t *); |
755 | extern void | |
b8698a0f | 756 | lto_destroy_simple_input_block (struct lto_file_decl_data *, |
d7f09764 DN |
757 | enum lto_section_type, |
758 | struct lto_input_block *, const char *, size_t); | |
b8698a0f | 759 | extern void lto_set_in_hooks (struct lto_file_decl_data **, |
d7f09764 DN |
760 | lto_get_section_data_f *, |
761 | lto_free_section_data_f *); | |
762 | extern struct lto_file_decl_data **lto_get_file_decl_data (void); | |
763 | extern const char *lto_get_section_data (struct lto_file_decl_data *, | |
764 | enum lto_section_type, | |
765 | const char *, size_t *); | |
766 | extern void lto_free_section_data (struct lto_file_decl_data *, | |
767 | enum lto_section_type, | |
768 | const char *, const char *, size_t); | |
d7f09764 DN |
769 | extern htab_t lto_create_renaming_table (void); |
770 | extern void lto_record_renamed_decl (struct lto_file_decl_data *, | |
771 | const char *, const char *); | |
772 | extern const char *lto_get_decl_name_mapping (struct lto_file_decl_data *, | |
773 | const char *); | |
774 | extern struct lto_in_decl_state *lto_new_in_decl_state (void); | |
775 | extern void lto_delete_in_decl_state (struct lto_in_decl_state *); | |
d7f09764 DN |
776 | extern struct lto_in_decl_state *lto_get_function_in_decl_state ( |
777 | struct lto_file_decl_data *, tree); | |
82e9d642 | 778 | extern void lto_free_function_in_decl_state (struct lto_in_decl_state *); |
5e20cdc9 | 779 | extern void lto_free_function_in_decl_state_for_node (symtab_node *); |
bc0fe8cb | 780 | extern void lto_section_overrun (struct lto_input_block *) ATTRIBUTE_NORETURN; |
f242c0a5 JH |
781 | extern void lto_value_range_error (const char *, |
782 | HOST_WIDE_INT, HOST_WIDE_INT, | |
783 | HOST_WIDE_INT) ATTRIBUTE_NORETURN; | |
d7f09764 DN |
784 | |
785 | /* In lto-section-out.c */ | |
d7f09764 DN |
786 | extern void lto_begin_section (const char *, bool); |
787 | extern void lto_end_section (void); | |
f6bcdb5e | 788 | extern void lto_write_data (const void *, unsigned int); |
d7f09764 | 789 | extern void lto_write_stream (struct lto_output_stream *); |
d7f09764 DN |
790 | extern bool lto_output_decl_index (struct lto_output_stream *, |
791 | struct lto_tree_ref_encoder *, | |
792 | tree, unsigned int *); | |
793 | extern void lto_output_field_decl_index (struct lto_out_decl_state *, | |
794 | struct lto_output_stream *, tree); | |
795 | extern void lto_output_fn_decl_index (struct lto_out_decl_state *, | |
796 | struct lto_output_stream *, tree); | |
797 | extern void lto_output_namespace_decl_index (struct lto_out_decl_state *, | |
798 | struct lto_output_stream *, tree); | |
799 | extern void lto_output_var_decl_index (struct lto_out_decl_state *, | |
800 | struct lto_output_stream *, tree); | |
801 | extern void lto_output_type_decl_index (struct lto_out_decl_state *, | |
802 | struct lto_output_stream *, tree); | |
803 | extern void lto_output_type_ref_index (struct lto_out_decl_state *, | |
804 | struct lto_output_stream *, tree); | |
805 | extern struct lto_simple_output_block *lto_create_simple_output_block ( | |
806 | enum lto_section_type); | |
807 | extern void lto_destroy_simple_output_block (struct lto_simple_output_block *); | |
808 | extern struct lto_out_decl_state *lto_new_out_decl_state (void); | |
809 | extern void lto_delete_out_decl_state (struct lto_out_decl_state *); | |
810 | extern struct lto_out_decl_state *lto_get_out_decl_state (void); | |
811 | extern void lto_push_out_decl_state (struct lto_out_decl_state *); | |
812 | extern struct lto_out_decl_state *lto_pop_out_decl_state (void); | |
813 | extern void lto_record_function_out_decl_state (tree, | |
814 | struct lto_out_decl_state *); | |
bc0fe8cb | 815 | extern void lto_append_block (struct lto_output_stream *); |
d7f09764 DN |
816 | |
817 | ||
818 | /* In lto-streamer.c. */ | |
1b34e6e2 BS |
819 | |
820 | /* Set when streaming LTO for offloading compiler. */ | |
821 | extern bool lto_stream_offload_p; | |
822 | ||
d7f09764 DN |
823 | extern const char *lto_tag_name (enum LTO_tags); |
824 | extern bitmap lto_bitmap_alloc (void); | |
825 | extern void lto_bitmap_free (bitmap); | |
73ce4d1e | 826 | extern char *lto_get_section_name (int, const char *, struct lto_file_decl_data *); |
b8f4e58f | 827 | extern void print_lto_report (const char *); |
d7f09764 DN |
828 | extern void lto_streamer_init (void); |
829 | extern bool gate_lto_out (void); | |
830 | #ifdef LTO_STREAMER_DEBUG | |
831 | extern void lto_orig_address_map (tree, intptr_t); | |
832 | extern intptr_t lto_orig_address_get (tree); | |
833 | extern void lto_orig_address_remove (tree); | |
834 | #endif | |
835 | extern void lto_check_version (int, int); | |
47c79d56 | 836 | extern void lto_streamer_hooks_init (void); |
d7f09764 DN |
837 | |
838 | /* In lto-streamer-in.c */ | |
d7f09764 | 839 | extern void lto_input_cgraph (struct lto_file_decl_data *, const char *); |
47c79d56 | 840 | extern void lto_reader_init (void); |
5e581212 JH |
841 | extern void lto_input_function_body (struct lto_file_decl_data *, |
842 | struct cgraph_node *, | |
d7f09764 | 843 | const char *); |
0b83e688 JH |
844 | extern void lto_input_variable_constructor (struct lto_file_decl_data *, |
845 | struct varpool_node *, | |
846 | const char *); | |
d7f09764 DN |
847 | extern void lto_input_constructors_and_inits (struct lto_file_decl_data *, |
848 | const char *); | |
398f05da | 849 | extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int); |
db847fa8 | 850 | extern void lto_input_mode_table (struct lto_file_decl_data *); |
d7f09764 DN |
851 | extern struct data_in *lto_data_in_create (struct lto_file_decl_data *, |
852 | const char *, unsigned, | |
9771b263 | 853 | vec<ld_plugin_symbol_resolution_t> ); |
d7f09764 | 854 | extern void lto_data_in_delete (struct data_in *); |
a183b5c7 | 855 | extern void lto_input_data_block (struct lto_input_block *, void *, size_t); |
eaeec5ec JH |
856 | void lto_input_location (location_t *, struct bitpack_d *, struct data_in *); |
857 | location_t stream_input_location_now (struct bitpack_d *bp, | |
858 | struct data_in *data); | |
f0efc7aa DN |
859 | tree lto_input_tree_ref (struct lto_input_block *, struct data_in *, |
860 | struct function *, enum LTO_tags); | |
861 | void lto_tag_check_set (enum LTO_tags, int, ...); | |
862 | void lto_init_eh (void); | |
ee03e71d RB |
863 | hashval_t lto_input_scc (struct lto_input_block *, struct data_in *, |
864 | unsigned *, unsigned *); | |
865 | tree lto_input_tree_1 (struct lto_input_block *, struct data_in *, | |
866 | enum LTO_tags, hashval_t hash); | |
b9393656 | 867 | tree lto_input_tree (struct lto_input_block *, struct data_in *); |
d7f09764 DN |
868 | |
869 | ||
870 | /* In lto-streamer-out.c */ | |
871 | extern void lto_register_decl_definition (tree, struct lto_file_decl_data *); | |
872 | extern struct output_block *create_output_block (enum lto_section_type); | |
873 | extern void destroy_output_block (struct output_block *); | |
7e54c608 | 874 | extern void lto_output_tree (struct output_block *, tree, bool, bool); |
49f836ba | 875 | extern void lto_output_toplevel_asms (void); |
fb3f88cc | 876 | extern void produce_asm (struct output_block *ob, tree fn); |
38f4f02f BS |
877 | extern void lto_output (); |
878 | extern void produce_asm_for_decls (); | |
a183b5c7 DN |
879 | void lto_output_decl_state_streams (struct output_block *, |
880 | struct lto_out_decl_state *); | |
881 | void lto_output_decl_state_refs (struct output_block *, | |
882 | struct lto_output_stream *, | |
883 | struct lto_out_decl_state *); | |
7cb7d208 | 884 | void lto_output_location (struct output_block *, struct bitpack_d *, location_t); |
db847fa8 | 885 | void lto_output_init_mode_table (void); |
d7f09764 DN |
886 | |
887 | ||
888 | /* In lto-cgraph.c */ | |
9cf7975d | 889 | extern bool asm_nodes_output; |
e75f8f79 | 890 | lto_symtab_encoder_t lto_symtab_encoder_new (bool); |
5e20cdc9 | 891 | int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 892 | void lto_symtab_encoder_delete (lto_symtab_encoder_t); |
5e20cdc9 | 893 | bool lto_symtab_encoder_delete_node (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 894 | bool lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t, |
91fbf0c7 | 895 | struct cgraph_node *); |
f27c1867 | 896 | bool lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t, |
5e20cdc9 | 897 | symtab_node *); |
f27c1867 | 898 | void lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t, |
5e20cdc9 | 899 | symtab_node *); |
91fbf0c7 | 900 | |
7380e6ef | 901 | bool lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t, |
2c8326a5 | 902 | varpool_node *); |
f27c1867 | 903 | void output_symtab (void); |
ab96cc5b | 904 | void input_symtab (void); |
ec6fe917 IV |
905 | void output_offload_tables (void); |
906 | void input_offload_tables (void); | |
369451ec | 907 | bool referenced_from_other_partition_p (struct ipa_ref_list *, |
f27c1867 | 908 | lto_symtab_encoder_t); |
9a809897 | 909 | bool reachable_from_other_partition_p (struct cgraph_node *, |
f27c1867 | 910 | lto_symtab_encoder_t); |
f473c082 | 911 | bool referenced_from_this_partition_p (symtab_node *, |
f27c1867 | 912 | lto_symtab_encoder_t); |
f3380641 | 913 | bool reachable_from_this_partition_p (struct cgraph_node *, |
f27c1867 | 914 | lto_symtab_encoder_t); |
b4661bfe | 915 | lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder); |
837bac8c | 916 | void select_what_to_stream (void); |
d7f09764 | 917 | |
325fe981 JH |
918 | /* In options-save.c. */ |
919 | void cl_target_option_stream_out (struct output_block *, struct bitpack_d *, | |
920 | struct cl_target_option *); | |
921 | ||
922 | void cl_target_option_stream_in (struct data_in *, | |
923 | struct bitpack_d *, | |
924 | struct cl_target_option *); | |
925 | ||
ca9a04da JH |
926 | void cl_optimization_stream_out (struct bitpack_d *, struct cl_optimization *); |
927 | ||
928 | void cl_optimization_stream_in (struct bitpack_d *, struct cl_optimization *); | |
929 | ||
d7f09764 DN |
930 | |
931 | /* In lto-symtab.c. */ | |
1a735925 | 932 | extern void lto_symtab_merge_decls (void); |
40a7fe1e | 933 | extern void lto_symtab_merge_symbols (void); |
d7f09764 | 934 | extern tree lto_symtab_prevailing_decl (tree decl); |
d7f09764 DN |
935 | |
936 | ||
937 | /* In lto-opts.c. */ | |
d7f09764 | 938 | extern void lto_write_options (void); |
d7f09764 DN |
939 | |
940 | ||
d7f09764 DN |
941 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
942 | extern struct lto_stats_d lto_stats; | |
943 | ||
944 | /* Section names corresponding to the values of enum lto_section_type. */ | |
945 | extern const char *lto_section_name[]; | |
946 | ||
947 | /* Holds all the out decl states of functions output so far in the | |
948 | current output file. */ | |
9771b263 | 949 | extern vec<lto_out_decl_state_ptr> lto_function_decl_states; |
d7f09764 DN |
950 | |
951 | /* Return true if LTO tag TAG corresponds to a tree code. */ | |
952 | static inline bool | |
953 | lto_tag_is_tree_code_p (enum LTO_tags tag) | |
954 | { | |
15d16c8a | 955 | return tag > LTO_tree_pickle_reference && (unsigned) tag <= MAX_TREE_CODES; |
d7f09764 DN |
956 | } |
957 | ||
958 | ||
959 | /* Return true if LTO tag TAG corresponds to a gimple code. */ | |
960 | static inline bool | |
961 | lto_tag_is_gimple_code_p (enum LTO_tags tag) | |
962 | { | |
15d16c8a RB |
963 | return (unsigned) tag >= NUM_TREE_CODES + 2 |
964 | && (unsigned) tag < 2 + NUM_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE; | |
d7f09764 DN |
965 | } |
966 | ||
967 | ||
968 | /* Return the LTO tag corresponding to gimple code CODE. See enum | |
969 | LTO_tags for details on the conversion. */ | |
970 | static inline enum LTO_tags | |
971 | lto_gimple_code_to_tag (enum gimple_code code) | |
972 | { | |
15d16c8a | 973 | return (enum LTO_tags) ((unsigned) code + NUM_TREE_CODES + 2); |
d7f09764 DN |
974 | } |
975 | ||
976 | ||
977 | /* Return the GIMPLE code corresponding to TAG. See enum LTO_tags for | |
978 | details on the conversion. */ | |
979 | static inline enum gimple_code | |
980 | lto_tag_to_gimple_code (enum LTO_tags tag) | |
981 | { | |
982 | gcc_assert (lto_tag_is_gimple_code_p (tag)); | |
15d16c8a | 983 | return (enum gimple_code) ((unsigned) tag - NUM_TREE_CODES - 2); |
d7f09764 DN |
984 | } |
985 | ||
986 | ||
987 | /* Return the LTO tag corresponding to tree code CODE. See enum | |
988 | LTO_tags for details on the conversion. */ | |
989 | static inline enum LTO_tags | |
990 | lto_tree_code_to_tag (enum tree_code code) | |
991 | { | |
15d16c8a | 992 | return (enum LTO_tags) ((unsigned) code + 2); |
d7f09764 DN |
993 | } |
994 | ||
995 | ||
996 | /* Return the tree code corresponding to TAG. See enum LTO_tags for | |
997 | details on the conversion. */ | |
998 | static inline enum tree_code | |
999 | lto_tag_to_tree_code (enum LTO_tags tag) | |
1000 | { | |
1001 | gcc_assert (lto_tag_is_tree_code_p (tag)); | |
15d16c8a | 1002 | return (enum tree_code) ((unsigned) tag - 2); |
d7f09764 DN |
1003 | } |
1004 | ||
f0efc7aa DN |
1005 | /* Check that tag ACTUAL == EXPECTED. */ |
1006 | static inline void | |
1007 | lto_tag_check (enum LTO_tags actual, enum LTO_tags expected) | |
1008 | { | |
1009 | if (actual != expected) | |
1010 | internal_error ("bytecode stream: expected tag %s instead of %s", | |
1011 | lto_tag_name (expected), lto_tag_name (actual)); | |
1012 | } | |
1013 | ||
1014 | /* Check that tag ACTUAL is in the range [TAG1, TAG2]. */ | |
1015 | static inline void | |
1016 | lto_tag_check_range (enum LTO_tags actual, enum LTO_tags tag1, | |
1017 | enum LTO_tags tag2) | |
1018 | { | |
1019 | if (actual < tag1 || actual > tag2) | |
1020 | internal_error ("bytecode stream: tag %s is not in the expected range " | |
1021 | "[%s, %s]", | |
1022 | lto_tag_name (actual), | |
1023 | lto_tag_name (tag1), | |
1024 | lto_tag_name (tag2)); | |
1025 | } | |
1026 | ||
d7f09764 DN |
1027 | /* Initialize an lto_out_decl_buffer ENCODER. */ |
1028 | static inline void | |
d579fcda | 1029 | lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
d7f09764 | 1030 | { |
1eb68d2d | 1031 | encoder->tree_hash_table = new hash_map<tree, unsigned> (251); |
9771b263 | 1032 | encoder->trees.create (0); |
d7f09764 DN |
1033 | } |
1034 | ||
1035 | ||
073a8998 | 1036 | /* Destroy an lto_tree_ref_encoder ENCODER by freeing its contents. The |
d7f09764 DN |
1037 | memory used by ENCODER is not freed by this function. */ |
1038 | static inline void | |
1039 | lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) | |
1040 | { | |
1041 | /* Hash table may be delete already. */ | |
1eb68d2d TS |
1042 | delete encoder->tree_hash_table; |
1043 | encoder->tree_hash_table = NULL; | |
9771b263 | 1044 | encoder->trees.release (); |
d7f09764 DN |
1045 | } |
1046 | ||
1047 | /* Return the number of trees encoded in ENCODER. */ | |
1048 | static inline unsigned int | |
1049 | lto_tree_ref_encoder_size (struct lto_tree_ref_encoder *encoder) | |
1050 | { | |
9771b263 | 1051 | return encoder->trees.length (); |
d7f09764 DN |
1052 | } |
1053 | ||
1054 | /* Return the IDX-th tree in ENCODER. */ | |
1055 | static inline tree | |
1056 | lto_tree_ref_encoder_get_tree (struct lto_tree_ref_encoder *encoder, | |
1057 | unsigned int idx) | |
1058 | { | |
9771b263 | 1059 | return encoder->trees[idx]; |
d7f09764 DN |
1060 | } |
1061 | ||
f27c1867 JH |
1062 | /* Return number of encoded nodes in ENCODER. */ |
1063 | static inline int | |
1064 | lto_symtab_encoder_size (lto_symtab_encoder_t encoder) | |
1065 | { | |
9771b263 | 1066 | return encoder->nodes.length (); |
7b99cca4 JH |
1067 | } |
1068 | ||
1069 | /* Value used to represent failure of lto_symtab_encoder_lookup. */ | |
1070 | #define LCC_NOT_FOUND (-1) | |
1071 | ||
1072 | /* Look up NODE in encoder. Return NODE's reference if it has been encoded | |
1073 | or LCC_NOT_FOUND if it is not there. */ | |
1074 | ||
1075 | static inline int | |
1076 | lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder, | |
5e20cdc9 | 1077 | symtab_node *node) |
7b99cca4 | 1078 | { |
b787e7a2 TS |
1079 | size_t *slot = encoder->map->get (node); |
1080 | return (slot && *slot ? *(slot) - 1 : LCC_NOT_FOUND); | |
f27c1867 JH |
1081 | } |
1082 | ||
1083 | /* Return true if iterator LSE points to nothing. */ | |
1084 | static inline bool | |
1085 | lsei_end_p (lto_symtab_encoder_iterator lsei) | |
1086 | { | |
1087 | return lsei.index >= (unsigned)lto_symtab_encoder_size (lsei.encoder); | |
1088 | } | |
1089 | ||
1090 | /* Advance iterator LSE. */ | |
1091 | static inline void | |
1092 | lsei_next (lto_symtab_encoder_iterator *lsei) | |
1093 | { | |
1094 | lsei->index++; | |
1095 | } | |
1096 | ||
1097 | /* Return the node pointed to by LSI. */ | |
5e20cdc9 | 1098 | static inline symtab_node * |
f27c1867 JH |
1099 | lsei_node (lto_symtab_encoder_iterator lsei) |
1100 | { | |
9771b263 | 1101 | return lsei.encoder->nodes[lsei.index].node; |
f27c1867 JH |
1102 | } |
1103 | ||
1104 | /* Return the node pointed to by LSI. */ | |
1105 | static inline struct cgraph_node * | |
1106 | lsei_cgraph_node (lto_symtab_encoder_iterator lsei) | |
1107 | { | |
d52f5295 | 1108 | return dyn_cast<cgraph_node *> (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1109 | } |
1110 | ||
1111 | /* Return the node pointed to by LSI. */ | |
2c8326a5 | 1112 | static inline varpool_node * |
f27c1867 JH |
1113 | lsei_varpool_node (lto_symtab_encoder_iterator lsei) |
1114 | { | |
d52f5295 | 1115 | return dyn_cast<varpool_node *> (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1116 | } |
1117 | ||
f27c1867 JH |
1118 | /* Return the cgraph node corresponding to REF using ENCODER. */ |
1119 | ||
5e20cdc9 | 1120 | static inline symtab_node * |
f27c1867 JH |
1121 | lto_symtab_encoder_deref (lto_symtab_encoder_t encoder, int ref) |
1122 | { | |
1123 | if (ref == LCC_NOT_FOUND) | |
1124 | return NULL; | |
1125 | ||
9771b263 | 1126 | return encoder->nodes[ref].node; |
f27c1867 JH |
1127 | } |
1128 | ||
1129 | /* Return an iterator to the first node in LSI. */ | |
1130 | static inline lto_symtab_encoder_iterator | |
1131 | lsei_start (lto_symtab_encoder_t encoder) | |
1132 | { | |
1133 | lto_symtab_encoder_iterator lsei; | |
1134 | ||
1135 | lsei.encoder = encoder; | |
1136 | lsei.index = 0; | |
1137 | return lsei; | |
1138 | } | |
1139 | ||
1140 | /* Advance iterator LSE. */ | |
1141 | static inline void | |
1142 | lsei_next_in_partition (lto_symtab_encoder_iterator *lsei) | |
1143 | { | |
1144 | lsei_next (lsei); | |
1145 | while (!lsei_end_p (*lsei) | |
1146 | && !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))) | |
1147 | lsei_next (lsei); | |
1148 | } | |
1149 | ||
1150 | /* Return an iterator to the first node in LSI. */ | |
1151 | static inline lto_symtab_encoder_iterator | |
1152 | lsei_start_in_partition (lto_symtab_encoder_t encoder) | |
1153 | { | |
1154 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1155 | ||
1156 | if (lsei_end_p (lsei)) | |
1157 | return lsei; | |
1158 | if (!lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) | |
1159 | lsei_next_in_partition (&lsei); | |
1160 | ||
1161 | return lsei; | |
1162 | } | |
1163 | ||
1164 | /* Advance iterator LSE. */ | |
1165 | static inline void | |
1166 | lsei_next_function_in_partition (lto_symtab_encoder_iterator *lsei) | |
1167 | { | |
1168 | lsei_next (lsei); | |
1169 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1170 | && (!is_a <cgraph_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1171 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1172 | lsei_next (lsei); | |
1173 | } | |
1174 | ||
1175 | /* Return an iterator to the first node in LSI. */ | |
1176 | static inline lto_symtab_encoder_iterator | |
1177 | lsei_start_function_in_partition (lto_symtab_encoder_t encoder) | |
1178 | { | |
1179 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1180 | ||
1181 | if (lsei_end_p (lsei)) | |
1182 | return lsei; | |
7de90a6c | 1183 | if (!is_a <cgraph_node *> (lsei_node (lsei)) |
f27c1867 JH |
1184 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1185 | lsei_next_function_in_partition (&lsei); | |
1186 | ||
1187 | return lsei; | |
1188 | } | |
1189 | ||
1190 | /* Advance iterator LSE. */ | |
1191 | static inline void | |
1192 | lsei_next_variable_in_partition (lto_symtab_encoder_iterator *lsei) | |
1193 | { | |
1194 | lsei_next (lsei); | |
1195 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1196 | && (!is_a <varpool_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1197 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1198 | lsei_next (lsei); | |
1199 | } | |
1200 | ||
1201 | /* Return an iterator to the first node in LSI. */ | |
1202 | static inline lto_symtab_encoder_iterator | |
1203 | lsei_start_variable_in_partition (lto_symtab_encoder_t encoder) | |
1204 | { | |
1205 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1206 | ||
1207 | if (lsei_end_p (lsei)) | |
1208 | return lsei; | |
7de90a6c | 1209 | if (!is_a <varpool_node *> (lsei_node (lsei)) |
f27c1867 JH |
1210 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1211 | lsei_next_variable_in_partition (&lsei); | |
1212 | ||
1213 | return lsei; | |
1214 | } | |
1215 | ||
d7f09764 DN |
1216 | DEFINE_DECL_STREAM_FUNCS (TYPE, type) |
1217 | DEFINE_DECL_STREAM_FUNCS (FIELD_DECL, field_decl) | |
1218 | DEFINE_DECL_STREAM_FUNCS (FN_DECL, fn_decl) | |
1219 | DEFINE_DECL_STREAM_FUNCS (VAR_DECL, var_decl) | |
1220 | DEFINE_DECL_STREAM_FUNCS (TYPE_DECL, type_decl) | |
1221 | DEFINE_DECL_STREAM_FUNCS (NAMESPACE_DECL, namespace_decl) | |
1222 | DEFINE_DECL_STREAM_FUNCS (LABEL_DECL, label_decl) | |
1223 | ||
1224 | #endif /* GCC_LTO_STREAMER_H */ |