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