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d7f09764 DN |
1 | /* Data structures and declarations used for reading and writing |
2 | GIMPLE to a file stream. | |
3 | ||
a5544970 | 4 | Copyright (C) 2009-2019 Free Software Foundation, Inc. |
d7f09764 DN |
5 | Contributed by Doug Kwan <dougkwan@google.com> |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 3, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #ifndef GCC_LTO_STREAMER_H | |
24 | #define GCC_LTO_STREAMER_H | |
25 | ||
26 | #include "plugin-api.h" | |
db0bf14f | 27 | #include "gcov-io.h" |
f0efc7aa | 28 | #include "diagnostic.h" |
47c79d56 | 29 | |
d7f09764 DN |
30 | /* The encoding for a function consists of the following sections: |
31 | ||
32 | 1) The header. | |
33 | 2) FIELD_DECLS. | |
34 | 3) FUNCTION_DECLS. | |
35 | 4) global VAR_DECLS. | |
36 | 5) type_decls | |
37 | 6) types. | |
38 | 7) Names for the labels that have names | |
39 | 8) The SSA names. | |
40 | 9) The control flow graph. | |
41 | 10-11)Gimple for local decls. | |
42 | 12) Gimple for the function. | |
43 | 13) Strings. | |
44 | ||
45 | 1) THE HEADER. | |
46 | 2-6) THE GLOBAL DECLS AND TYPES. | |
47 | ||
48 | The global decls and types are encoded in the same way. For each | |
49 | entry, there is word with the offset within the section to the | |
50 | entry. | |
51 | ||
b8698a0f | 52 | 7) THE LABEL NAMES. |
d7f09764 DN |
53 | |
54 | Since most labels do not have names, this section my be of zero | |
55 | length. It consists of an array of string table references, one | |
56 | per label. In the lto code, the labels are given either | |
57 | positive or negative indexes. the positive ones have names and | |
58 | the negative ones do not. The positive index can be used to | |
59 | find the name in this array. | |
60 | ||
b8698a0f | 61 | 9) THE CFG. |
d7f09764 DN |
62 | |
63 | 10) Index into the local decls. Since local decls can have local | |
64 | decls inside them, they must be read in randomly in order to | |
b8698a0f | 65 | properly restore them. |
d7f09764 DN |
66 | |
67 | 11-12) GIMPLE FOR THE LOCAL DECLS AND THE FUNCTION BODY. | |
68 | ||
69 | The gimple consists of a set of records. | |
70 | ||
71 | THE FUNCTION | |
b8698a0f | 72 | |
d7f09764 DN |
73 | At the top level of (8) is the function. It consists of five |
74 | pieces: | |
75 | ||
76 | LTO_function - The tag. | |
77 | eh tree - This is all of the exception handling regions | |
78 | put out in a post order traversial of the | |
79 | tree. Siblings are output as lists terminated | |
80 | by a 0. The set of fields matches the fields | |
81 | defined in except.c. | |
82 | ||
83 | last_basic_block - in uleb128 form. | |
84 | ||
85 | basic blocks - This is the set of basic blocks. | |
86 | ||
87 | zero - The termination of the basic blocks. | |
88 | ||
89 | BASIC BLOCKS | |
90 | ||
91 | There are two forms of basic blocks depending on if they are | |
92 | empty or not. | |
93 | ||
94 | The basic block consists of: | |
95 | ||
96 | LTO_bb1 or LTO_bb0 - The tag. | |
97 | ||
98 | bb->index - the index in uleb128 form. | |
99 | ||
100 | #succs - The number of successors un uleb128 form. | |
101 | ||
102 | the successors - For each edge, a pair. The first of the | |
103 | pair is the index of the successor in | |
104 | uleb128 form and the second are the flags in | |
105 | uleb128 form. | |
106 | ||
107 | the statements - A gimple tree, as described above. | |
108 | These are only present for LTO_BB1. | |
109 | Following each statement is an optional | |
110 | exception handling record LTO_eh_region | |
111 | which contains the region number (for | |
112 | regions >= 0). | |
113 | ||
114 | zero - This is only present for LTO_BB1 and is used | |
115 | to terminate the statements and exception | |
116 | regions within this block. | |
117 | ||
118 | 12) STRINGS | |
119 | ||
120 | String are represented in the table as pairs, a length in ULEB128 | |
121 | form followed by the data for the string. */ | |
122 | ||
86c23d93 | 123 | #define LTO_major_version 9 |
15b25b24 | 124 | #define LTO_minor_version 0 |
d7f09764 DN |
125 | |
126 | typedef unsigned char lto_decl_flags_t; | |
127 | ||
128 | ||
d7f09764 DN |
129 | /* Tags representing the various IL objects written to the bytecode file |
130 | (GIMPLE statements, basic blocks, EH regions, tree nodes, etc). | |
131 | ||
132 | NOTE, when adding new LTO tags, also update lto_tag_name. */ | |
b8698a0f | 133 | enum LTO_tags |
d7f09764 DN |
134 | { |
135 | LTO_null = 0, | |
136 | ||
15d16c8a RB |
137 | /* Special for streamer. Reference to previously-streamed node. */ |
138 | LTO_tree_pickle_reference, | |
139 | ||
d7f09764 DN |
140 | /* Reserve enough entries to fit all the tree and gimple codes handled |
141 | by the streamer. This guarantees that: | |
142 | ||
143 | 1- Given a tree code C: | |
144 | enum LTO_tags tag == C + 1 | |
145 | ||
146 | 2- Given a gimple code C: | |
147 | enum LTO_tags tag == C + NUM_TREE_CODES + 1 | |
148 | ||
149 | Conversely, to map between LTO tags and tree/gimple codes, the | |
150 | reverse operation must be applied. */ | |
07233947 | 151 | LTO_bb0 = 1 + MAX_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE, |
d7f09764 DN |
152 | LTO_bb1, |
153 | ||
154 | /* EH region holding the previous statement. */ | |
155 | LTO_eh_region, | |
156 | ||
c61f8c3b RG |
157 | /* Shared INTEGER_CST node. */ |
158 | LTO_integer_cst, | |
159 | ||
d7f09764 DN |
160 | /* Function body. */ |
161 | LTO_function, | |
162 | ||
163 | /* EH table. */ | |
164 | LTO_eh_table, | |
165 | ||
166 | /* EH region types. These mirror enum eh_region_type. */ | |
167 | LTO_ert_cleanup, | |
168 | LTO_ert_try, | |
169 | LTO_ert_allowed_exceptions, | |
170 | LTO_ert_must_not_throw, | |
171 | ||
172 | /* EH landing pad. */ | |
173 | LTO_eh_landing_pad, | |
174 | ||
175 | /* EH try/catch node. */ | |
176 | LTO_eh_catch, | |
177 | ||
ee03e71d RB |
178 | /* Special for global streamer. A blob of unnamed tree nodes. */ |
179 | LTO_tree_scc, | |
180 | ||
d7f09764 DN |
181 | /* References to indexable tree nodes. These objects are stored in |
182 | tables that are written separately from the function bodies that | |
183 | reference them. This way they can be instantiated even when the | |
184 | referencing functions aren't (e.g., during WPA) and it also allows | |
185 | functions to be copied from one file to another without having | |
186 | to unpickle the body first (the references are location | |
187 | independent). | |
188 | ||
189 | NOTE, do not regroup these values as the grouping is exposed | |
190 | in the range checks done in lto_input_tree. */ | |
191 | LTO_field_decl_ref, /* Do not change. */ | |
192 | LTO_function_decl_ref, | |
193 | LTO_label_decl_ref, | |
194 | LTO_namespace_decl_ref, | |
195 | LTO_result_decl_ref, | |
196 | LTO_ssa_name_ref, | |
197 | LTO_type_decl_ref, | |
198 | LTO_type_ref, | |
199 | LTO_const_decl_ref, | |
200 | LTO_imported_decl_ref, | |
6be14c0e | 201 | LTO_translation_unit_decl_ref, |
5f673c6a TB |
202 | LTO_global_decl_ref, |
203 | LTO_namelist_decl_ref, /* Do not change. */ | |
d7f09764 DN |
204 | |
205 | /* This tag must always be last. */ | |
206 | LTO_NUM_TAGS | |
207 | }; | |
208 | ||
209 | ||
210 | /* Set of section types that are in an LTO file. This list will grow | |
211 | as the number of IPA passes grows since each IPA pass will need its | |
212 | own section type to store its summary information. | |
213 | ||
214 | When adding a new section type, you must also extend the | |
215 | LTO_SECTION_NAME array in lto-section-in.c. */ | |
216 | enum lto_section_type | |
217 | { | |
218 | LTO_section_decls = 0, | |
219 | LTO_section_function_body, | |
220 | LTO_section_static_initializer, | |
ab96cc5b | 221 | LTO_section_symtab, |
369451ec | 222 | LTO_section_refs, |
49f836ba | 223 | LTO_section_asm, |
fb3f88cc | 224 | LTO_section_jump_functions, |
d7f09764 DN |
225 | LTO_section_ipa_pure_const, |
226 | LTO_section_ipa_reference, | |
0208f7da | 227 | LTO_section_ipa_profile, |
ab96cc5b | 228 | LTO_section_symtab_nodes, |
d7f09764 | 229 | LTO_section_opts, |
922f15c2 | 230 | LTO_section_cgraph_opt_sum, |
0bceb671 | 231 | LTO_section_ipa_fn_summary, |
2c9561b5 | 232 | LTO_section_ipcp_transform, |
b84d4347 | 233 | LTO_section_ipa_icf, |
ec6fe917 | 234 | LTO_section_offload_table, |
db847fa8 | 235 | LTO_section_mode_table, |
b2b40051 | 236 | LTO_section_ipa_hsa, |
d7f09764 DN |
237 | LTO_N_SECTION_TYPES /* Must be last. */ |
238 | }; | |
239 | ||
240 | /* Indices to the various function, type and symbol streams. */ | |
84562394 | 241 | enum lto_decl_stream_e_t |
d7f09764 DN |
242 | { |
243 | LTO_DECL_STREAM_TYPE = 0, /* Must be first. */ | |
244 | LTO_DECL_STREAM_FIELD_DECL, | |
245 | LTO_DECL_STREAM_FN_DECL, | |
246 | LTO_DECL_STREAM_VAR_DECL, | |
247 | LTO_DECL_STREAM_TYPE_DECL, | |
248 | LTO_DECL_STREAM_NAMESPACE_DECL, | |
249 | LTO_DECL_STREAM_LABEL_DECL, | |
250 | LTO_N_DECL_STREAMS | |
84562394 | 251 | }; |
d7f09764 DN |
252 | |
253 | typedef enum ld_plugin_symbol_resolution ld_plugin_symbol_resolution_t; | |
d7f09764 DN |
254 | |
255 | ||
256 | /* Macro to define convenience functions for type and decl streams | |
b8698a0f | 257 | in lto_file_decl_data. */ |
d7f09764 DN |
258 | #define DEFINE_DECL_STREAM_FUNCS(UPPER_NAME, name) \ |
259 | static inline tree \ | |
260 | lto_file_decl_data_get_ ## name (struct lto_file_decl_data *data, \ | |
261 | unsigned int idx) \ | |
262 | { \ | |
263 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
9c71e9df | 264 | return (*state->streams[LTO_DECL_STREAM_## UPPER_NAME])[idx]; \ |
d7f09764 DN |
265 | } \ |
266 | \ | |
267 | static inline unsigned int \ | |
268 | lto_file_decl_data_num_ ## name ## s (struct lto_file_decl_data *data) \ | |
269 | { \ | |
270 | struct lto_in_decl_state *state = data->current_decl_state; \ | |
9c71e9df | 271 | return vec_safe_length (state->streams[LTO_DECL_STREAM_## UPPER_NAME]); \ |
d7f09764 DN |
272 | } |
273 | ||
274 | ||
275 | /* Return a char pointer to the start of a data stream for an lto pass | |
276 | or function. The first parameter is the file data that contains | |
277 | the information. The second parameter is the type of information | |
278 | to be obtained. The third parameter is the name of the function | |
b8698a0f | 279 | and is only used when finding a function body; otherwise it is |
d7f09764 | 280 | NULL. The fourth parameter is the length of the data returned. */ |
b8698a0f | 281 | typedef const char* (lto_get_section_data_f) (struct lto_file_decl_data *, |
d7f09764 | 282 | enum lto_section_type, |
b8698a0f | 283 | const char *, |
d7f09764 DN |
284 | size_t *); |
285 | ||
286 | /* Return the data found from the above call. The first three | |
287 | parameters are the same as above. The fourth parameter is the data | |
073a8998 | 288 | itself and the fifth is the length of the data. */ |
b8698a0f | 289 | typedef void (lto_free_section_data_f) (struct lto_file_decl_data *, |
d7f09764 DN |
290 | enum lto_section_type, |
291 | const char *, | |
292 | const char *, | |
293 | size_t); | |
294 | ||
eaeec5ec JH |
295 | /* The location cache holds expanded locations for streamed in trees. |
296 | This is done to reduce memory usage of libcpp linemap that strongly preffers | |
297 | locations to be inserted in the soruce order. */ | |
298 | ||
299 | class lto_location_cache | |
300 | { | |
301 | public: | |
302 | /* Apply all changes in location cache. Add locations into linemap and patch | |
303 | trees. */ | |
304 | bool apply_location_cache (); | |
305 | /* Tree merging did not suceed; mark all changes in the cache as accepted. */ | |
306 | void accept_location_cache (); | |
307 | /* Tree merging did suceed; throw away recent changes. */ | |
308 | void revert_location_cache (); | |
309 | void input_location (location_t *loc, struct bitpack_d *bp, | |
310 | struct data_in *data_in); | |
311 | lto_location_cache () | |
312 | : loc_cache (), accepted_length (0), current_file (NULL), current_line (0), | |
a9dfad6d | 313 | current_col (0), current_sysp (false), current_loc (UNKNOWN_LOCATION) |
eaeec5ec JH |
314 | { |
315 | gcc_assert (!current_cache); | |
316 | current_cache = this; | |
317 | } | |
318 | ~lto_location_cache () | |
319 | { | |
320 | apply_location_cache (); | |
321 | gcc_assert (current_cache == this); | |
322 | current_cache = NULL; | |
323 | } | |
324 | ||
325 | /* There can be at most one instance of location cache (combining multiple | |
326 | would bring it out of sync with libcpp linemap); point to current | |
327 | one. */ | |
328 | static lto_location_cache *current_cache; | |
329 | ||
330 | private: | |
331 | static int cmp_loc (const void *pa, const void *pb); | |
332 | ||
333 | struct cached_location | |
334 | { | |
335 | const char *file; | |
336 | location_t *loc; | |
337 | int line, col; | |
6c1bc27c | 338 | bool sysp; |
eaeec5ec JH |
339 | }; |
340 | ||
341 | /* The location cache. */ | |
342 | ||
50cfd44e | 343 | auto_vec<cached_location> loc_cache; |
eaeec5ec JH |
344 | |
345 | /* Accepted entries are ones used by trees that are known to be not unified | |
346 | by tree merging. */ | |
347 | ||
348 | int accepted_length; | |
349 | ||
350 | /* Bookkeeping to remember state in between calls to lto_apply_location_cache | |
351 | When streaming gimple, the location cache is not used and thus | |
352 | lto_apply_location_cache happens per location basis. It is then | |
353 | useful to avoid redundant calls of linemap API. */ | |
354 | ||
355 | const char *current_file; | |
356 | int current_line; | |
357 | int current_col; | |
6c1bc27c | 358 | bool current_sysp; |
eaeec5ec JH |
359 | location_t current_loc; |
360 | }; | |
361 | ||
d7f09764 | 362 | /* Structure used as buffer for reading an LTO file. */ |
207c68cd | 363 | class lto_input_block |
d7f09764 | 364 | { |
207c68cd RB |
365 | public: |
366 | /* Special constructor for the string table, it abuses this to | |
367 | do random access but use the uhwi decoder. */ | |
db847fa8 JJ |
368 | lto_input_block (const char *data_, unsigned int p_, unsigned int len_, |
369 | const unsigned char *mode_table_) | |
370 | : data (data_), mode_table (mode_table_), p (p_), len (len_) {} | |
371 | lto_input_block (const char *data_, unsigned int len_, | |
372 | const unsigned char *mode_table_) | |
373 | : data (data_), mode_table (mode_table_), p (0), len (len_) {} | |
207c68cd | 374 | |
d7f09764 | 375 | const char *data; |
db847fa8 | 376 | const unsigned char *mode_table; |
d7f09764 DN |
377 | unsigned int p; |
378 | unsigned int len; | |
379 | }; | |
380 | ||
d7f09764 DN |
381 | |
382 | /* The is the first part of the record for a function or constructor | |
383 | in the .o file. */ | |
384 | struct lto_header | |
385 | { | |
386 | int16_t major_version; | |
387 | int16_t minor_version; | |
d7f09764 DN |
388 | }; |
389 | ||
207c68cd RB |
390 | /* The is the first part of the record in an LTO file for many of the |
391 | IPA passes. */ | |
392 | struct lto_simple_header : lto_header | |
d7f09764 | 393 | { |
207c68cd RB |
394 | /* Size of main gimple body of function. */ |
395 | int32_t main_size; | |
396 | }; | |
d7f09764 | 397 | |
207c68cd RB |
398 | struct lto_simple_header_with_strings : lto_simple_header |
399 | { | |
d7f09764 DN |
400 | /* Size of the string table. */ |
401 | int32_t string_size; | |
402 | }; | |
403 | ||
207c68cd RB |
404 | /* The header for a function body. */ |
405 | struct lto_function_header : lto_simple_header_with_strings | |
406 | { | |
407 | /* Size of the cfg. */ | |
408 | int32_t cfg_size; | |
409 | }; | |
410 | ||
d7f09764 DN |
411 | |
412 | /* Structure describing a symbol section. */ | |
207c68cd | 413 | struct lto_decl_header : lto_simple_header_with_strings |
d7f09764 | 414 | { |
d7f09764 DN |
415 | /* Size of region for decl state. */ |
416 | int32_t decl_state_size; | |
417 | ||
418 | /* Number of nodes in globals stream. */ | |
419 | int32_t num_nodes; | |
49f836ba JB |
420 | }; |
421 | ||
422 | ||
d7f09764 DN |
423 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
424 | struct lto_stats_d | |
425 | { | |
426 | unsigned HOST_WIDE_INT num_input_cgraph_nodes; | |
7b99cca4 | 427 | unsigned HOST_WIDE_INT num_output_symtab_nodes; |
d7f09764 DN |
428 | unsigned HOST_WIDE_INT num_input_files; |
429 | unsigned HOST_WIDE_INT num_output_files; | |
430 | unsigned HOST_WIDE_INT num_cgraph_partitions; | |
431 | unsigned HOST_WIDE_INT section_size[LTO_N_SECTION_TYPES]; | |
432 | unsigned HOST_WIDE_INT num_function_bodies; | |
433 | unsigned HOST_WIDE_INT num_trees[NUM_TREE_CODES]; | |
434 | unsigned HOST_WIDE_INT num_output_il_bytes; | |
435 | unsigned HOST_WIDE_INT num_compressed_il_bytes; | |
436 | unsigned HOST_WIDE_INT num_input_il_bytes; | |
437 | unsigned HOST_WIDE_INT num_uncompressed_il_bytes; | |
ee03e71d RB |
438 | unsigned HOST_WIDE_INT num_tree_bodies_output; |
439 | unsigned HOST_WIDE_INT num_pickle_refs_output; | |
d7f09764 DN |
440 | }; |
441 | ||
7b99cca4 | 442 | /* Entry of LTO symtab encoder. */ |
84562394 | 443 | struct lto_encoder_entry |
7b99cca4 | 444 | { |
5e20cdc9 | 445 | symtab_node *node; |
7b99cca4 JH |
446 | /* Is the node in this partition (i.e. ltrans of this partition will |
447 | be responsible for outputting it)? */ | |
448 | unsigned int in_partition:1; | |
449 | /* Do we encode body in this partition? */ | |
450 | unsigned int body:1; | |
451 | /* Do we encode initializer in this partition? | |
452 | For example the readonly variable initializers are encoded to aid | |
453 | constant folding even if they are not in the partition. */ | |
454 | unsigned int initializer:1; | |
84562394 | 455 | }; |
7b99cca4 | 456 | |
7b99cca4 | 457 | |
d7f09764 | 458 | /* Encoder data structure used to stream callgraph nodes. */ |
7380e6ef | 459 | struct lto_symtab_encoder_d |
d7f09764 | 460 | { |
9771b263 | 461 | vec<lto_encoder_entry> nodes; |
b787e7a2 | 462 | hash_map<symtab_node *, size_t> *map; |
2f41ecf5 | 463 | }; |
7380e6ef JH |
464 | |
465 | typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t; | |
2f41ecf5 | 466 | |
f27c1867 | 467 | /* Iterator structure for cgraph node sets. */ |
84562394 | 468 | struct lto_symtab_encoder_iterator |
703e95cf | 469 | { |
f27c1867 JH |
470 | lto_symtab_encoder_t encoder; |
471 | unsigned index; | |
84562394 | 472 | }; |
f27c1867 JH |
473 | |
474 | ||
475 | ||
d7f09764 DN |
476 | /* The lto_tree_ref_encoder struct is used to encode trees into indices. */ |
477 | ||
478 | struct lto_tree_ref_encoder | |
479 | { | |
1eb68d2d | 480 | hash_map<tree, unsigned> *tree_hash_table; /* Maps pointers to indices. */ |
d579fcda | 481 | vec<tree> trees; /* Maps indices to pointers. */ |
d7f09764 DN |
482 | }; |
483 | ||
484 | ||
485 | /* Structure to hold states of input scope. */ | |
907dadbd | 486 | struct GTY((for_user)) lto_in_decl_state |
d7f09764 DN |
487 | { |
488 | /* Array of lto_in_decl_buffers to store type and decls streams. */ | |
9c71e9df | 489 | vec<tree, va_gc> *streams[LTO_N_DECL_STREAMS]; |
d7f09764 DN |
490 | |
491 | /* If this in-decl state is associated with a function. FN_DECL | |
492 | point to the FUNCTION_DECL. */ | |
493 | tree fn_decl; | |
ca834876 JH |
494 | |
495 | /* True if decl state is compressed. */ | |
496 | bool compressed; | |
d7f09764 DN |
497 | }; |
498 | ||
499 | typedef struct lto_in_decl_state *lto_in_decl_state_ptr; | |
500 | ||
ca752f39 | 501 | struct decl_state_hasher : ggc_ptr_hash<lto_in_decl_state> |
907dadbd TS |
502 | { |
503 | static hashval_t | |
504 | hash (lto_in_decl_state *s) | |
505 | { | |
506 | return htab_hash_pointer (s->fn_decl); | |
507 | } | |
508 | ||
509 | static bool | |
510 | equal (lto_in_decl_state *a, lto_in_decl_state *b) | |
511 | { | |
512 | return a->fn_decl == b->fn_decl; | |
513 | } | |
514 | }; | |
d7f09764 DN |
515 | |
516 | /* The structure that holds all of the vectors of global types, | |
517 | decls and cgraph nodes used in the serialization of this file. */ | |
518 | struct lto_out_decl_state | |
519 | { | |
520 | /* The buffers contain the sets of decls of various kinds and types we have | |
521 | seen so far and the indexes assigned to them. */ | |
522 | struct lto_tree_ref_encoder streams[LTO_N_DECL_STREAMS]; | |
523 | ||
524 | /* Encoder for cgraph nodes. */ | |
7380e6ef | 525 | lto_symtab_encoder_t symtab_node_encoder; |
2f41ecf5 | 526 | |
d7f09764 DN |
527 | /* If this out-decl state belongs to a function, fn_decl points to that |
528 | function. Otherwise, it is NULL. */ | |
529 | tree fn_decl; | |
ca834876 JH |
530 | |
531 | /* True if decl state is compressed. */ | |
532 | bool compressed; | |
d7f09764 DN |
533 | }; |
534 | ||
535 | typedef struct lto_out_decl_state *lto_out_decl_state_ptr; | |
536 | ||
d7f09764 | 537 | |
aed7d7cf AK |
538 | /* Compact representation of a index <-> resolution pair. Unpacked to an |
539 | vector later. */ | |
540 | struct res_pair | |
541 | { | |
542 | ld_plugin_symbol_resolution_t res; | |
543 | unsigned index; | |
544 | }; | |
aed7d7cf | 545 | |
aed7d7cf | 546 | |
d7f09764 DN |
547 | /* One of these is allocated for each object file that being compiled |
548 | by lto. This structure contains the tables that are needed by the | |
549 | serialized functions and ipa passes to connect themselves to the | |
550 | global types and decls as they are reconstituted. */ | |
49ba8180 | 551 | struct GTY(()) lto_file_decl_data |
d7f09764 DN |
552 | { |
553 | /* Decl state currently used. */ | |
554 | struct lto_in_decl_state *current_decl_state; | |
555 | ||
556 | /* Decl state corresponding to regions outside of any functions | |
557 | in the compilation unit. */ | |
558 | struct lto_in_decl_state *global_decl_state; | |
559 | ||
560 | /* Table of cgraph nodes present in this file. */ | |
7380e6ef | 561 | lto_symtab_encoder_t GTY((skip)) symtab_node_encoder; |
2f41ecf5 | 562 | |
d7f09764 | 563 | /* Hash table maps lto-related section names to location in file. */ |
907dadbd | 564 | hash_table<decl_state_hasher> *function_decl_states; |
d7f09764 DN |
565 | |
566 | /* The .o file that these offsets relate to. */ | |
49ba8180 | 567 | const char *GTY((skip)) file_name; |
d7f09764 | 568 | |
d7f09764 | 569 | /* Hash table maps lto-related section names to location in file. */ |
49ba8180 | 570 | htab_t GTY((skip)) section_hash_table; |
d7f09764 DN |
571 | |
572 | /* Hash new name of renamed global declaration to its original name. */ | |
49ba8180 | 573 | htab_t GTY((skip)) renaming_hash_table; |
73ce4d1e AK |
574 | |
575 | /* Linked list used temporarily in reader */ | |
576 | struct lto_file_decl_data *next; | |
577 | ||
578 | /* Sub ID for merged objects. */ | |
dde8b360 | 579 | unsigned HOST_WIDE_INT id; |
73ce4d1e AK |
580 | |
581 | /* Symbol resolutions for this file */ | |
9771b263 | 582 | vec<res_pair> GTY((skip)) respairs; |
aed7d7cf | 583 | unsigned max_index; |
db0bf14f | 584 | |
7f3577f5 | 585 | gcov_summary GTY((skip)) profile_info; |
bbf9ad07 JH |
586 | |
587 | /* Map assigning declarations their resolutions. */ | |
39c8aaa4 | 588 | hash_map<tree, ld_plugin_symbol_resolution> * GTY((skip)) resolution_map; |
db847fa8 JJ |
589 | |
590 | /* Mode translation table. */ | |
591 | const unsigned char *mode_table; | |
d7f09764 DN |
592 | }; |
593 | ||
a9429e29 LB |
594 | typedef struct lto_file_decl_data *lto_file_decl_data_ptr; |
595 | ||
d7f09764 DN |
596 | struct lto_char_ptr_base |
597 | { | |
598 | char *ptr; | |
599 | }; | |
600 | ||
601 | /* An incore byte stream to buffer the various parts of the function. | |
602 | The entire structure should be zeroed when created. The record | |
603 | consists of a set of blocks. The first sizeof (ptr) bytes are used | |
604 | as a chain, and the rest store the bytes to be written. */ | |
605 | struct lto_output_stream | |
606 | { | |
607 | /* The pointer to the first block in the stream. */ | |
608 | struct lto_char_ptr_base * first_block; | |
609 | ||
610 | /* The pointer to the last and current block in the stream. */ | |
611 | struct lto_char_ptr_base * current_block; | |
612 | ||
613 | /* The pointer to where the next char should be written. */ | |
614 | char * current_pointer; | |
615 | ||
616 | /* The number of characters left in the current block. */ | |
617 | unsigned int left_in_block; | |
618 | ||
619 | /* The block size of the last block allocated. */ | |
620 | unsigned int block_size; | |
621 | ||
622 | /* The total number of characters written. */ | |
623 | unsigned int total_size; | |
624 | }; | |
625 | ||
d7f09764 DN |
626 | /* A simple output block. This can be used for simple IPA passes that |
627 | do not need more than one stream. */ | |
628 | struct lto_simple_output_block | |
629 | { | |
630 | enum lto_section_type section_type; | |
631 | struct lto_out_decl_state *decl_state; | |
632 | ||
633 | /* The stream that the main tree codes are written to. */ | |
634 | struct lto_output_stream *main_stream; | |
635 | }; | |
636 | ||
4a8fb1a1 LC |
637 | /* String hashing. */ |
638 | ||
639 | struct string_slot | |
640 | { | |
641 | const char *s; | |
642 | int len; | |
643 | unsigned int slot_num; | |
644 | }; | |
645 | ||
646 | /* Hashtable helpers. */ | |
647 | ||
8d67ee55 | 648 | struct string_slot_hasher : nofree_ptr_hash <string_slot> |
4a8fb1a1 | 649 | { |
67f58944 TS |
650 | static inline hashval_t hash (const string_slot *); |
651 | static inline bool equal (const string_slot *, const string_slot *); | |
4a8fb1a1 LC |
652 | }; |
653 | ||
654 | /* Returns a hash code for DS. Adapted from libiberty's htab_hash_string | |
655 | to support strings that may not end in '\0'. */ | |
656 | ||
657 | inline hashval_t | |
67f58944 | 658 | string_slot_hasher::hash (const string_slot *ds) |
4a8fb1a1 LC |
659 | { |
660 | hashval_t r = ds->len; | |
661 | int i; | |
662 | ||
663 | for (i = 0; i < ds->len; i++) | |
664 | r = r * 67 + (unsigned)ds->s[i] - 113; | |
665 | return r; | |
666 | } | |
667 | ||
668 | /* Returns nonzero if DS1 and DS2 are equal. */ | |
669 | ||
670 | inline bool | |
67f58944 | 671 | string_slot_hasher::equal (const string_slot *ds1, const string_slot *ds2) |
4a8fb1a1 LC |
672 | { |
673 | if (ds1->len == ds2->len) | |
674 | return memcmp (ds1->s, ds2->s, ds1->len) == 0; | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
d7f09764 DN |
679 | /* Data structure holding all the data and descriptors used when writing |
680 | an LTO file. */ | |
681 | struct output_block | |
682 | { | |
683 | enum lto_section_type section_type; | |
684 | struct lto_out_decl_state *decl_state; | |
685 | ||
686 | /* The stream that the main tree codes are written to. */ | |
687 | struct lto_output_stream *main_stream; | |
688 | ||
689 | /* The stream that contains the string table. */ | |
690 | struct lto_output_stream *string_stream; | |
691 | ||
692 | /* The stream that contains the cfg. */ | |
693 | struct lto_output_stream *cfg_stream; | |
694 | ||
695 | /* The hash table that contains the set of strings we have seen so | |
696 | far and the indexes assigned to them. */ | |
c203e8a7 | 697 | hash_table<string_slot_hasher> *string_hash_table; |
d7f09764 | 698 | |
0b83e688 | 699 | /* The current symbol that we are currently serializing. Null |
d7f09764 | 700 | if we are serializing something else. */ |
f473c082 | 701 | symtab_node *symbol; |
d7f09764 DN |
702 | |
703 | /* These are the last file and line that were seen in the stream. | |
704 | If the current node differs from these, it needs to insert | |
705 | something into the stream and fix these up. */ | |
706 | const char *current_file; | |
707 | int current_line; | |
708 | int current_col; | |
6c1bc27c | 709 | bool current_sysp; |
d7f09764 | 710 | |
d7f09764 | 711 | /* Cache of nodes written in this section. */ |
412288f1 | 712 | struct streamer_tree_cache_d *writer_cache; |
fac009a8 JH |
713 | |
714 | /* All data persistent across whole duration of output block | |
715 | can go here. */ | |
716 | struct obstack obstack; | |
d7f09764 DN |
717 | }; |
718 | ||
719 | ||
720 | /* Data and descriptors used when reading from an LTO file. */ | |
721 | struct data_in | |
722 | { | |
723 | /* The global decls and types. */ | |
724 | struct lto_file_decl_data *file_data; | |
725 | ||
d7f09764 DN |
726 | /* The string table. */ |
727 | const char *strings; | |
728 | ||
729 | /* The length of the string table. */ | |
730 | unsigned int strings_len; | |
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; |
eaeec5ec JH |
737 | |
738 | /* Cache of source code location. */ | |
739 | lto_location_cache location_cache; | |
d7f09764 DN |
740 | }; |
741 | ||
742 | ||
743 | /* In lto-section-in.c */ | |
744 | extern struct lto_input_block * lto_create_simple_input_block ( | |
b8698a0f | 745 | struct lto_file_decl_data *, |
d7f09764 DN |
746 | enum lto_section_type, const char **, size_t *); |
747 | extern void | |
b8698a0f | 748 | lto_destroy_simple_input_block (struct lto_file_decl_data *, |
d7f09764 DN |
749 | enum lto_section_type, |
750 | struct lto_input_block *, const char *, size_t); | |
b8698a0f | 751 | extern void lto_set_in_hooks (struct lto_file_decl_data **, |
d7f09764 DN |
752 | lto_get_section_data_f *, |
753 | lto_free_section_data_f *); | |
754 | extern struct lto_file_decl_data **lto_get_file_decl_data (void); | |
755 | extern const char *lto_get_section_data (struct lto_file_decl_data *, | |
756 | enum lto_section_type, | |
ca834876 JH |
757 | const char *, size_t *, |
758 | bool decompress = false); | |
759 | extern const char *lto_get_raw_section_data (struct lto_file_decl_data *, | |
760 | enum lto_section_type, | |
761 | const char *, size_t *); | |
d7f09764 | 762 | extern void lto_free_section_data (struct lto_file_decl_data *, |
ca834876 JH |
763 | enum lto_section_type, |
764 | const char *, const char *, size_t, | |
765 | bool decompress = false); | |
766 | extern void lto_free_raw_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); |
ca834876 | 789 | extern void lto_write_raw_data (const void *, unsigned int); |
d7f09764 | 790 | extern void lto_write_stream (struct lto_output_stream *); |
d7f09764 DN |
791 | extern bool lto_output_decl_index (struct lto_output_stream *, |
792 | struct lto_tree_ref_encoder *, | |
793 | tree, unsigned int *); | |
794 | extern void lto_output_field_decl_index (struct lto_out_decl_state *, | |
795 | struct lto_output_stream *, tree); | |
796 | extern void lto_output_fn_decl_index (struct lto_out_decl_state *, | |
797 | struct lto_output_stream *, tree); | |
798 | extern void lto_output_namespace_decl_index (struct lto_out_decl_state *, | |
799 | struct lto_output_stream *, tree); | |
800 | extern void lto_output_var_decl_index (struct lto_out_decl_state *, | |
801 | struct lto_output_stream *, tree); | |
802 | extern void lto_output_type_decl_index (struct lto_out_decl_state *, | |
803 | struct lto_output_stream *, tree); | |
804 | extern void lto_output_type_ref_index (struct lto_out_decl_state *, | |
805 | struct lto_output_stream *, tree); | |
806 | extern struct lto_simple_output_block *lto_create_simple_output_block ( | |
807 | enum lto_section_type); | |
808 | extern void lto_destroy_simple_output_block (struct lto_simple_output_block *); | |
809 | extern struct lto_out_decl_state *lto_new_out_decl_state (void); | |
810 | extern void lto_delete_out_decl_state (struct lto_out_decl_state *); | |
811 | extern struct lto_out_decl_state *lto_get_out_decl_state (void); | |
812 | extern void lto_push_out_decl_state (struct lto_out_decl_state *); | |
813 | extern struct lto_out_decl_state *lto_pop_out_decl_state (void); | |
814 | extern void lto_record_function_out_decl_state (tree, | |
815 | struct lto_out_decl_state *); | |
bc0fe8cb | 816 | extern void lto_append_block (struct lto_output_stream *); |
d7f09764 DN |
817 | |
818 | ||
819 | /* In lto-streamer.c. */ | |
1b34e6e2 BS |
820 | |
821 | /* Set when streaming LTO for offloading compiler. */ | |
822 | extern bool lto_stream_offload_p; | |
823 | ||
d7f09764 | 824 | extern const char *lto_tag_name (enum LTO_tags); |
73ce4d1e | 825 | extern char *lto_get_section_name (int, const char *, struct lto_file_decl_data *); |
b8f4e58f | 826 | extern void print_lto_report (const char *); |
d7f09764 DN |
827 | extern void lto_streamer_init (void); |
828 | extern bool gate_lto_out (void); | |
b898d037 | 829 | extern void lto_check_version (int, int, const char *); |
47c79d56 | 830 | extern void lto_streamer_hooks_init (void); |
d7f09764 DN |
831 | |
832 | /* In lto-streamer-in.c */ | |
d7f09764 | 833 | extern void lto_input_cgraph (struct lto_file_decl_data *, const char *); |
47c79d56 | 834 | extern void lto_reader_init (void); |
5e581212 JH |
835 | extern void lto_input_function_body (struct lto_file_decl_data *, |
836 | struct cgraph_node *, | |
d7f09764 | 837 | const char *); |
0b83e688 JH |
838 | extern void lto_input_variable_constructor (struct lto_file_decl_data *, |
839 | struct varpool_node *, | |
840 | const char *); | |
d7f09764 DN |
841 | extern void lto_input_constructors_and_inits (struct lto_file_decl_data *, |
842 | const char *); | |
398f05da | 843 | extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int); |
db847fa8 | 844 | extern void lto_input_mode_table (struct lto_file_decl_data *); |
d7f09764 DN |
845 | extern struct data_in *lto_data_in_create (struct lto_file_decl_data *, |
846 | const char *, unsigned, | |
9771b263 | 847 | vec<ld_plugin_symbol_resolution_t> ); |
d7f09764 | 848 | extern void lto_data_in_delete (struct data_in *); |
a183b5c7 | 849 | extern void lto_input_data_block (struct lto_input_block *, void *, size_t); |
eaeec5ec JH |
850 | void lto_input_location (location_t *, struct bitpack_d *, struct data_in *); |
851 | location_t stream_input_location_now (struct bitpack_d *bp, | |
852 | struct data_in *data); | |
f0efc7aa DN |
853 | tree lto_input_tree_ref (struct lto_input_block *, struct data_in *, |
854 | struct function *, enum LTO_tags); | |
855 | void lto_tag_check_set (enum LTO_tags, int, ...); | |
856 | void lto_init_eh (void); | |
ee03e71d RB |
857 | hashval_t lto_input_scc (struct lto_input_block *, struct data_in *, |
858 | unsigned *, unsigned *); | |
859 | tree lto_input_tree_1 (struct lto_input_block *, struct data_in *, | |
860 | enum LTO_tags, hashval_t hash); | |
b9393656 | 861 | tree lto_input_tree (struct lto_input_block *, struct data_in *); |
d7f09764 DN |
862 | |
863 | ||
864 | /* In lto-streamer-out.c */ | |
865 | extern void lto_register_decl_definition (tree, struct lto_file_decl_data *); | |
866 | extern struct output_block *create_output_block (enum lto_section_type); | |
867 | extern void destroy_output_block (struct output_block *); | |
7e54c608 | 868 | extern void lto_output_tree (struct output_block *, tree, bool, bool); |
49f836ba | 869 | extern void lto_output_toplevel_asms (void); |
fb3f88cc | 870 | extern void produce_asm (struct output_block *ob, tree fn); |
38f4f02f BS |
871 | extern void lto_output (); |
872 | extern void produce_asm_for_decls (); | |
a183b5c7 DN |
873 | void lto_output_decl_state_streams (struct output_block *, |
874 | struct lto_out_decl_state *); | |
875 | void lto_output_decl_state_refs (struct output_block *, | |
876 | struct lto_output_stream *, | |
877 | struct lto_out_decl_state *); | |
7cb7d208 | 878 | void lto_output_location (struct output_block *, struct bitpack_d *, location_t); |
db847fa8 | 879 | void lto_output_init_mode_table (void); |
d7f09764 DN |
880 | |
881 | ||
882 | /* In lto-cgraph.c */ | |
9cf7975d | 883 | extern bool asm_nodes_output; |
e75f8f79 | 884 | lto_symtab_encoder_t lto_symtab_encoder_new (bool); |
5e20cdc9 | 885 | int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 886 | void lto_symtab_encoder_delete (lto_symtab_encoder_t); |
5e20cdc9 | 887 | bool lto_symtab_encoder_delete_node (lto_symtab_encoder_t, symtab_node *); |
7380e6ef | 888 | bool lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t, |
91fbf0c7 | 889 | struct cgraph_node *); |
f27c1867 | 890 | bool lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t, |
5e20cdc9 | 891 | symtab_node *); |
f27c1867 | 892 | void lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t, |
5e20cdc9 | 893 | symtab_node *); |
91fbf0c7 | 894 | |
7380e6ef | 895 | bool lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t, |
2c8326a5 | 896 | varpool_node *); |
f27c1867 | 897 | void output_symtab (void); |
ab96cc5b | 898 | void input_symtab (void); |
ec6fe917 | 899 | void output_offload_tables (void); |
ed5d948d | 900 | void input_offload_tables (bool); |
369451ec | 901 | bool referenced_from_other_partition_p (struct ipa_ref_list *, |
f27c1867 | 902 | lto_symtab_encoder_t); |
9a809897 | 903 | bool reachable_from_other_partition_p (struct cgraph_node *, |
f27c1867 | 904 | lto_symtab_encoder_t); |
f473c082 | 905 | bool referenced_from_this_partition_p (symtab_node *, |
f27c1867 | 906 | lto_symtab_encoder_t); |
f3380641 | 907 | bool reachable_from_this_partition_p (struct cgraph_node *, |
f27c1867 | 908 | lto_symtab_encoder_t); |
b4661bfe | 909 | lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder); |
837bac8c | 910 | void select_what_to_stream (void); |
d7f09764 | 911 | |
325fe981 JH |
912 | /* In options-save.c. */ |
913 | void cl_target_option_stream_out (struct output_block *, struct bitpack_d *, | |
914 | struct cl_target_option *); | |
915 | ||
916 | void cl_target_option_stream_in (struct data_in *, | |
917 | struct bitpack_d *, | |
918 | struct cl_target_option *); | |
919 | ||
c518c102 ML |
920 | void cl_optimization_stream_out (struct output_block *, |
921 | struct bitpack_d *, struct cl_optimization *); | |
ca9a04da | 922 | |
c518c102 ML |
923 | void cl_optimization_stream_in (struct data_in *, |
924 | struct bitpack_d *, struct cl_optimization *); | |
ca9a04da | 925 | |
d7f09764 | 926 | |
d7f09764 DN |
927 | |
928 | /* In lto-opts.c. */ | |
d7f09764 | 929 | extern void lto_write_options (void); |
d7f09764 DN |
930 | |
931 | ||
d7f09764 DN |
932 | /* Statistics gathered during LTO, WPA and LTRANS. */ |
933 | extern struct lto_stats_d lto_stats; | |
934 | ||
935 | /* Section names corresponding to the values of enum lto_section_type. */ | |
936 | extern const char *lto_section_name[]; | |
937 | ||
938 | /* Holds all the out decl states of functions output so far in the | |
939 | current output file. */ | |
9771b263 | 940 | extern vec<lto_out_decl_state_ptr> lto_function_decl_states; |
d7f09764 DN |
941 | |
942 | /* Return true if LTO tag TAG corresponds to a tree code. */ | |
943 | static inline bool | |
944 | lto_tag_is_tree_code_p (enum LTO_tags tag) | |
945 | { | |
15d16c8a | 946 | return tag > LTO_tree_pickle_reference && (unsigned) tag <= MAX_TREE_CODES; |
d7f09764 DN |
947 | } |
948 | ||
949 | ||
950 | /* Return true if LTO tag TAG corresponds to a gimple code. */ | |
951 | static inline bool | |
952 | lto_tag_is_gimple_code_p (enum LTO_tags tag) | |
953 | { | |
15d16c8a RB |
954 | return (unsigned) tag >= NUM_TREE_CODES + 2 |
955 | && (unsigned) tag < 2 + NUM_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE; | |
d7f09764 DN |
956 | } |
957 | ||
958 | ||
959 | /* Return the LTO tag corresponding to gimple code CODE. See enum | |
960 | LTO_tags for details on the conversion. */ | |
961 | static inline enum LTO_tags | |
962 | lto_gimple_code_to_tag (enum gimple_code code) | |
963 | { | |
15d16c8a | 964 | return (enum LTO_tags) ((unsigned) code + NUM_TREE_CODES + 2); |
d7f09764 DN |
965 | } |
966 | ||
967 | ||
968 | /* Return the GIMPLE code corresponding to TAG. See enum LTO_tags for | |
969 | details on the conversion. */ | |
970 | static inline enum gimple_code | |
971 | lto_tag_to_gimple_code (enum LTO_tags tag) | |
972 | { | |
973 | gcc_assert (lto_tag_is_gimple_code_p (tag)); | |
15d16c8a | 974 | return (enum gimple_code) ((unsigned) tag - NUM_TREE_CODES - 2); |
d7f09764 DN |
975 | } |
976 | ||
977 | ||
978 | /* Return the LTO tag corresponding to tree code CODE. See enum | |
979 | LTO_tags for details on the conversion. */ | |
980 | static inline enum LTO_tags | |
981 | lto_tree_code_to_tag (enum tree_code code) | |
982 | { | |
15d16c8a | 983 | return (enum LTO_tags) ((unsigned) code + 2); |
d7f09764 DN |
984 | } |
985 | ||
986 | ||
987 | /* Return the tree code corresponding to TAG. See enum LTO_tags for | |
988 | details on the conversion. */ | |
989 | static inline enum tree_code | |
990 | lto_tag_to_tree_code (enum LTO_tags tag) | |
991 | { | |
992 | gcc_assert (lto_tag_is_tree_code_p (tag)); | |
15d16c8a | 993 | return (enum tree_code) ((unsigned) tag - 2); |
d7f09764 DN |
994 | } |
995 | ||
f0efc7aa DN |
996 | /* Check that tag ACTUAL == EXPECTED. */ |
997 | static inline void | |
998 | lto_tag_check (enum LTO_tags actual, enum LTO_tags expected) | |
999 | { | |
1000 | if (actual != expected) | |
1001 | internal_error ("bytecode stream: expected tag %s instead of %s", | |
1002 | lto_tag_name (expected), lto_tag_name (actual)); | |
1003 | } | |
1004 | ||
1005 | /* Check that tag ACTUAL is in the range [TAG1, TAG2]. */ | |
1006 | static inline void | |
1007 | lto_tag_check_range (enum LTO_tags actual, enum LTO_tags tag1, | |
1008 | enum LTO_tags tag2) | |
1009 | { | |
1010 | if (actual < tag1 || actual > tag2) | |
1011 | internal_error ("bytecode stream: tag %s is not in the expected range " | |
1012 | "[%s, %s]", | |
1013 | lto_tag_name (actual), | |
1014 | lto_tag_name (tag1), | |
1015 | lto_tag_name (tag2)); | |
1016 | } | |
1017 | ||
d7f09764 DN |
1018 | /* Initialize an lto_out_decl_buffer ENCODER. */ |
1019 | static inline void | |
d579fcda | 1020 | lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) |
d7f09764 | 1021 | { |
1eb68d2d | 1022 | encoder->tree_hash_table = new hash_map<tree, unsigned> (251); |
9771b263 | 1023 | encoder->trees.create (0); |
d7f09764 DN |
1024 | } |
1025 | ||
1026 | ||
073a8998 | 1027 | /* Destroy an lto_tree_ref_encoder ENCODER by freeing its contents. The |
d7f09764 DN |
1028 | memory used by ENCODER is not freed by this function. */ |
1029 | static inline void | |
1030 | lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder) | |
1031 | { | |
1032 | /* Hash table may be delete already. */ | |
1eb68d2d TS |
1033 | delete encoder->tree_hash_table; |
1034 | encoder->tree_hash_table = NULL; | |
9771b263 | 1035 | encoder->trees.release (); |
d7f09764 DN |
1036 | } |
1037 | ||
1038 | /* Return the number of trees encoded in ENCODER. */ | |
1039 | static inline unsigned int | |
1040 | lto_tree_ref_encoder_size (struct lto_tree_ref_encoder *encoder) | |
1041 | { | |
9771b263 | 1042 | return encoder->trees.length (); |
d7f09764 DN |
1043 | } |
1044 | ||
1045 | /* Return the IDX-th tree in ENCODER. */ | |
1046 | static inline tree | |
1047 | lto_tree_ref_encoder_get_tree (struct lto_tree_ref_encoder *encoder, | |
1048 | unsigned int idx) | |
1049 | { | |
9771b263 | 1050 | return encoder->trees[idx]; |
d7f09764 DN |
1051 | } |
1052 | ||
f27c1867 JH |
1053 | /* Return number of encoded nodes in ENCODER. */ |
1054 | static inline int | |
1055 | lto_symtab_encoder_size (lto_symtab_encoder_t encoder) | |
1056 | { | |
9771b263 | 1057 | return encoder->nodes.length (); |
7b99cca4 JH |
1058 | } |
1059 | ||
1060 | /* Value used to represent failure of lto_symtab_encoder_lookup. */ | |
1061 | #define LCC_NOT_FOUND (-1) | |
1062 | ||
1063 | /* Look up NODE in encoder. Return NODE's reference if it has been encoded | |
1064 | or LCC_NOT_FOUND if it is not there. */ | |
1065 | ||
1066 | static inline int | |
1067 | lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder, | |
5e20cdc9 | 1068 | symtab_node *node) |
7b99cca4 | 1069 | { |
b787e7a2 TS |
1070 | size_t *slot = encoder->map->get (node); |
1071 | return (slot && *slot ? *(slot) - 1 : LCC_NOT_FOUND); | |
f27c1867 JH |
1072 | } |
1073 | ||
1074 | /* Return true if iterator LSE points to nothing. */ | |
1075 | static inline bool | |
1076 | lsei_end_p (lto_symtab_encoder_iterator lsei) | |
1077 | { | |
1078 | return lsei.index >= (unsigned)lto_symtab_encoder_size (lsei.encoder); | |
1079 | } | |
1080 | ||
1081 | /* Advance iterator LSE. */ | |
1082 | static inline void | |
1083 | lsei_next (lto_symtab_encoder_iterator *lsei) | |
1084 | { | |
1085 | lsei->index++; | |
1086 | } | |
1087 | ||
1088 | /* Return the node pointed to by LSI. */ | |
5e20cdc9 | 1089 | static inline symtab_node * |
f27c1867 JH |
1090 | lsei_node (lto_symtab_encoder_iterator lsei) |
1091 | { | |
9771b263 | 1092 | return lsei.encoder->nodes[lsei.index].node; |
f27c1867 JH |
1093 | } |
1094 | ||
1095 | /* Return the node pointed to by LSI. */ | |
1096 | static inline struct cgraph_node * | |
1097 | lsei_cgraph_node (lto_symtab_encoder_iterator lsei) | |
1098 | { | |
d52f5295 | 1099 | return dyn_cast<cgraph_node *> (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1100 | } |
1101 | ||
1102 | /* Return the node pointed to by LSI. */ | |
2c8326a5 | 1103 | static inline varpool_node * |
f27c1867 JH |
1104 | lsei_varpool_node (lto_symtab_encoder_iterator lsei) |
1105 | { | |
d52f5295 | 1106 | return dyn_cast<varpool_node *> (lsei.encoder->nodes[lsei.index].node); |
f27c1867 JH |
1107 | } |
1108 | ||
f27c1867 JH |
1109 | /* Return the cgraph node corresponding to REF using ENCODER. */ |
1110 | ||
5e20cdc9 | 1111 | static inline symtab_node * |
f27c1867 JH |
1112 | lto_symtab_encoder_deref (lto_symtab_encoder_t encoder, int ref) |
1113 | { | |
1114 | if (ref == LCC_NOT_FOUND) | |
1115 | return NULL; | |
1116 | ||
9771b263 | 1117 | return encoder->nodes[ref].node; |
f27c1867 JH |
1118 | } |
1119 | ||
1120 | /* Return an iterator to the first node in LSI. */ | |
1121 | static inline lto_symtab_encoder_iterator | |
1122 | lsei_start (lto_symtab_encoder_t encoder) | |
1123 | { | |
1124 | lto_symtab_encoder_iterator lsei; | |
1125 | ||
1126 | lsei.encoder = encoder; | |
1127 | lsei.index = 0; | |
1128 | return lsei; | |
1129 | } | |
1130 | ||
1131 | /* Advance iterator LSE. */ | |
1132 | static inline void | |
1133 | lsei_next_in_partition (lto_symtab_encoder_iterator *lsei) | |
1134 | { | |
1135 | lsei_next (lsei); | |
1136 | while (!lsei_end_p (*lsei) | |
1137 | && !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))) | |
1138 | lsei_next (lsei); | |
1139 | } | |
1140 | ||
1141 | /* Return an iterator to the first node in LSI. */ | |
1142 | static inline lto_symtab_encoder_iterator | |
1143 | lsei_start_in_partition (lto_symtab_encoder_t encoder) | |
1144 | { | |
1145 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1146 | ||
1147 | if (lsei_end_p (lsei)) | |
1148 | return lsei; | |
1149 | if (!lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) | |
1150 | lsei_next_in_partition (&lsei); | |
1151 | ||
1152 | return lsei; | |
1153 | } | |
1154 | ||
1155 | /* Advance iterator LSE. */ | |
1156 | static inline void | |
1157 | lsei_next_function_in_partition (lto_symtab_encoder_iterator *lsei) | |
1158 | { | |
1159 | lsei_next (lsei); | |
1160 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1161 | && (!is_a <cgraph_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1162 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1163 | lsei_next (lsei); | |
1164 | } | |
1165 | ||
1166 | /* Return an iterator to the first node in LSI. */ | |
1167 | static inline lto_symtab_encoder_iterator | |
1168 | lsei_start_function_in_partition (lto_symtab_encoder_t encoder) | |
1169 | { | |
1170 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1171 | ||
1172 | if (lsei_end_p (lsei)) | |
1173 | return lsei; | |
7de90a6c | 1174 | if (!is_a <cgraph_node *> (lsei_node (lsei)) |
f27c1867 JH |
1175 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1176 | lsei_next_function_in_partition (&lsei); | |
1177 | ||
1178 | return lsei; | |
1179 | } | |
1180 | ||
1181 | /* Advance iterator LSE. */ | |
1182 | static inline void | |
1183 | lsei_next_variable_in_partition (lto_symtab_encoder_iterator *lsei) | |
1184 | { | |
1185 | lsei_next (lsei); | |
1186 | while (!lsei_end_p (*lsei) | |
7de90a6c | 1187 | && (!is_a <varpool_node *> (lsei_node (*lsei)) |
f27c1867 JH |
1188 | || !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei)))) |
1189 | lsei_next (lsei); | |
1190 | } | |
1191 | ||
1192 | /* Return an iterator to the first node in LSI. */ | |
1193 | static inline lto_symtab_encoder_iterator | |
1194 | lsei_start_variable_in_partition (lto_symtab_encoder_t encoder) | |
1195 | { | |
1196 | lto_symtab_encoder_iterator lsei = lsei_start (encoder); | |
1197 | ||
1198 | if (lsei_end_p (lsei)) | |
1199 | return lsei; | |
7de90a6c | 1200 | if (!is_a <varpool_node *> (lsei_node (lsei)) |
f27c1867 JH |
1201 | || !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei))) |
1202 | lsei_next_variable_in_partition (&lsei); | |
1203 | ||
1204 | return lsei; | |
1205 | } | |
1206 | ||
d7f09764 DN |
1207 | DEFINE_DECL_STREAM_FUNCS (TYPE, type) |
1208 | DEFINE_DECL_STREAM_FUNCS (FIELD_DECL, field_decl) | |
1209 | DEFINE_DECL_STREAM_FUNCS (FN_DECL, fn_decl) | |
1210 | DEFINE_DECL_STREAM_FUNCS (VAR_DECL, var_decl) | |
1211 | DEFINE_DECL_STREAM_FUNCS (TYPE_DECL, type_decl) | |
1212 | DEFINE_DECL_STREAM_FUNCS (NAMESPACE_DECL, namespace_decl) | |
1213 | DEFINE_DECL_STREAM_FUNCS (LABEL_DECL, label_decl) | |
1214 | ||
1ea85365 RB |
1215 | /* Entry for the delayed registering of decl -> DIE references. */ |
1216 | struct dref_entry { | |
1217 | tree decl; | |
1218 | const char *sym; | |
1219 | unsigned HOST_WIDE_INT off; | |
1220 | }; | |
1221 | ||
1222 | extern vec<dref_entry> dref_queue; | |
1223 | ||
b4da704c | 1224 | extern FILE *streamer_dump_file; |
1ea85365 | 1225 | |
d7f09764 | 1226 | #endif /* GCC_LTO_STREAMER_H */ |