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d7f09764 DN |
1 | /* Write the GIMPLE representation to a file stream. |
2 | ||
818ab71a | 3 | Copyright (C) 2009-2016 Free Software Foundation, Inc. |
d7f09764 DN |
4 | Contributed by Kenneth Zadeck <zadeck@naturalbridge.com> |
5 | Re-implemented by Diego Novillo <dnovillo@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 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
c7131fb2 | 26 | #include "backend.h" |
957060b5 AM |
27 | #include "target.h" |
28 | #include "rtl.h" | |
d7f09764 | 29 | #include "tree.h" |
c7131fb2 | 30 | #include "gimple.h" |
957060b5 | 31 | #include "tree-pass.h" |
c7131fb2 | 32 | #include "ssa.h" |
957060b5 | 33 | #include "gimple-streamer.h" |
c7131fb2 | 34 | #include "alias.h" |
d8a2d370 | 35 | #include "stor-layout.h" |
5be5c238 | 36 | #include "gimple-iterator.h" |
d7f09764 | 37 | #include "except.h" |
d7f09764 | 38 | #include "lto-symtab.h" |
c582198b | 39 | #include "cgraph.h" |
dd366ec3 | 40 | #include "cfgloop.h" |
9b2b7279 | 41 | #include "builtins.h" |
41dbbb37 | 42 | #include "gomp-constants.h" |
d7f09764 DN |
43 | |
44 | ||
5f673c6a TB |
45 | static void lto_write_tree (struct output_block*, tree, bool); |
46 | ||
d7f09764 DN |
47 | /* Clear the line info stored in DATA_IN. */ |
48 | ||
49 | static void | |
50 | clear_line_info (struct output_block *ob) | |
51 | { | |
52 | ob->current_file = NULL; | |
53 | ob->current_line = 0; | |
54 | ob->current_col = 0; | |
a9dfad6d | 55 | ob->current_sysp = false; |
d7f09764 DN |
56 | } |
57 | ||
58 | ||
59 | /* Create the output block and return it. SECTION_TYPE is | |
60 | LTO_section_function_body or LTO_static_initializer. */ | |
61 | ||
62 | struct output_block * | |
63 | create_output_block (enum lto_section_type section_type) | |
64 | { | |
65 | struct output_block *ob = XCNEW (struct output_block); | |
66 | ||
67 | ob->section_type = section_type; | |
68 | ob->decl_state = lto_get_out_decl_state (); | |
f0efc7aa DN |
69 | ob->main_stream = XCNEW (struct lto_output_stream); |
70 | ob->string_stream = XCNEW (struct lto_output_stream); | |
bdc67fd6 | 71 | ob->writer_cache = streamer_tree_cache_create (!flag_wpa, true, false); |
d7f09764 | 72 | |
f0efc7aa DN |
73 | if (section_type == LTO_section_function_body) |
74 | ob->cfg_stream = XCNEW (struct lto_output_stream); | |
d7f09764 | 75 | |
f0efc7aa | 76 | clear_line_info (ob); |
51545682 | 77 | |
c203e8a7 | 78 | ob->string_hash_table = new hash_table<string_slot_hasher> (37); |
f0efc7aa | 79 | gcc_obstack_init (&ob->obstack); |
d7f09764 | 80 | |
f0efc7aa DN |
81 | return ob; |
82 | } | |
d7f09764 | 83 | |
d7f09764 | 84 | |
f0efc7aa | 85 | /* Destroy the output block OB. */ |
d7f09764 | 86 | |
f0efc7aa DN |
87 | void |
88 | destroy_output_block (struct output_block *ob) | |
89 | { | |
90 | enum lto_section_type section_type = ob->section_type; | |
d7f09764 | 91 | |
c203e8a7 TS |
92 | delete ob->string_hash_table; |
93 | ob->string_hash_table = NULL; | |
d7f09764 | 94 | |
f0efc7aa DN |
95 | free (ob->main_stream); |
96 | free (ob->string_stream); | |
97 | if (section_type == LTO_section_function_body) | |
98 | free (ob->cfg_stream); | |
d7f09764 | 99 | |
412288f1 | 100 | streamer_tree_cache_delete (ob->writer_cache); |
f0efc7aa | 101 | obstack_free (&ob->obstack, NULL); |
6be14c0e | 102 | |
f0efc7aa | 103 | free (ob); |
d7f09764 DN |
104 | } |
105 | ||
106 | ||
f0efc7aa | 107 | /* Look up NODE in the type table and write the index for it to OB. */ |
d7f09764 DN |
108 | |
109 | static void | |
f0efc7aa | 110 | output_type_ref (struct output_block *ob, tree node) |
d7f09764 | 111 | { |
412288f1 | 112 | streamer_write_record_start (ob, LTO_type_ref); |
f0efc7aa | 113 | lto_output_type_ref_index (ob->decl_state, ob->main_stream, node); |
d7f09764 DN |
114 | } |
115 | ||
116 | ||
f0efc7aa DN |
117 | /* Return true if tree node T is written to various tables. For these |
118 | nodes, we sometimes want to write their phyiscal representation | |
119 | (via lto_output_tree), and sometimes we need to emit an index | |
120 | reference into a table (via lto_output_tree_ref). */ | |
d7f09764 | 121 | |
f0efc7aa DN |
122 | static bool |
123 | tree_is_indexable (tree t) | |
d7f09764 | 124 | { |
61a74079 JH |
125 | /* Parameters and return values of functions of variably modified types |
126 | must go to global stream, because they may be used in the type | |
127 | definition. */ | |
e0ffb247 RB |
128 | if ((TREE_CODE (t) == PARM_DECL || TREE_CODE (t) == RESULT_DECL) |
129 | && DECL_CONTEXT (t)) | |
61a74079 | 130 | return variably_modified_type_p (TREE_TYPE (DECL_CONTEXT (t)), NULL_TREE); |
52d8a590 JH |
131 | /* IMPORTED_DECL is put into BLOCK and thus it never can be shared. */ |
132 | else if (TREE_CODE (t) == IMPORTED_DECL) | |
133 | return false; | |
53a5717e RB |
134 | else if (((TREE_CODE (t) == VAR_DECL && !TREE_STATIC (t)) |
135 | || TREE_CODE (t) == TYPE_DECL | |
c39276b8 RB |
136 | || TREE_CODE (t) == CONST_DECL |
137 | || TREE_CODE (t) == NAMELIST_DECL) | |
53a5717e | 138 | && decl_function_context (t)) |
f0efc7aa | 139 | return false; |
ee03e71d RB |
140 | else if (TREE_CODE (t) == DEBUG_EXPR_DECL) |
141 | return false; | |
befa62e7 RG |
142 | /* Variably modified types need to be streamed alongside function |
143 | bodies because they can refer to local entities. Together with | |
144 | them we have to localize their members as well. | |
145 | ??? In theory that includes non-FIELD_DECLs as well. */ | |
146 | else if (TYPE_P (t) | |
147 | && variably_modified_type_p (t, NULL_TREE)) | |
148 | return false; | |
149 | else if (TREE_CODE (t) == FIELD_DECL | |
150 | && variably_modified_type_p (DECL_CONTEXT (t), NULL_TREE)) | |
151 | return false; | |
d7f09764 | 152 | else |
f0efc7aa | 153 | return (TYPE_P (t) || DECL_P (t) || TREE_CODE (t) == SSA_NAME); |
d7f09764 DN |
154 | } |
155 | ||
156 | ||
f0efc7aa DN |
157 | /* Output info about new location into bitpack BP. |
158 | After outputting bitpack, lto_output_location_data has | |
159 | to be done to output actual data. */ | |
d7f09764 | 160 | |
7cb7d208 RB |
161 | void |
162 | lto_output_location (struct output_block *ob, struct bitpack_d *bp, | |
163 | location_t loc) | |
d7f09764 | 164 | { |
f0efc7aa | 165 | expanded_location xloc; |
d7f09764 | 166 | |
5368224f | 167 | loc = LOCATION_LOCUS (loc); |
44433db0 JH |
168 | bp_pack_int_in_range (bp, 0, RESERVED_LOCATION_COUNT, |
169 | loc < RESERVED_LOCATION_COUNT | |
170 | ? loc : RESERVED_LOCATION_COUNT); | |
171 | if (loc < RESERVED_LOCATION_COUNT) | |
f0efc7aa | 172 | return; |
d7f09764 | 173 | |
f0efc7aa | 174 | xloc = expand_location (loc); |
d7f09764 | 175 | |
f0efc7aa | 176 | bp_pack_value (bp, ob->current_file != xloc.file, 1); |
e45cde98 RB |
177 | bp_pack_value (bp, ob->current_line != xloc.line, 1); |
178 | bp_pack_value (bp, ob->current_col != xloc.column, 1); | |
179 | ||
f0efc7aa | 180 | if (ob->current_file != xloc.file) |
6c1bc27c RB |
181 | { |
182 | bp_pack_string (ob, bp, xloc.file, true); | |
183 | bp_pack_value (bp, xloc.sysp, 1); | |
184 | } | |
f0efc7aa | 185 | ob->current_file = xloc.file; |
6c1bc27c | 186 | ob->current_sysp = xloc.sysp; |
d7f09764 | 187 | |
f0efc7aa DN |
188 | if (ob->current_line != xloc.line) |
189 | bp_pack_var_len_unsigned (bp, xloc.line); | |
190 | ob->current_line = xloc.line; | |
47c79d56 | 191 | |
f0efc7aa DN |
192 | if (ob->current_col != xloc.column) |
193 | bp_pack_var_len_unsigned (bp, xloc.column); | |
194 | ob->current_col = xloc.column; | |
d7f09764 DN |
195 | } |
196 | ||
197 | ||
f0efc7aa DN |
198 | /* If EXPR is an indexable tree node, output a reference to it to |
199 | output block OB. Otherwise, output the physical representation of | |
200 | EXPR to OB. */ | |
d7f09764 | 201 | |
b9393656 | 202 | static void |
f0efc7aa | 203 | lto_output_tree_ref (struct output_block *ob, tree expr) |
d7f09764 | 204 | { |
f0efc7aa | 205 | enum tree_code code; |
d7f09764 | 206 | |
f0efc7aa | 207 | if (TYPE_P (expr)) |
d7f09764 | 208 | { |
f0efc7aa DN |
209 | output_type_ref (ob, expr); |
210 | return; | |
d7f09764 | 211 | } |
f0efc7aa DN |
212 | |
213 | code = TREE_CODE (expr); | |
214 | switch (code) | |
d7f09764 | 215 | { |
f0efc7aa | 216 | case SSA_NAME: |
412288f1 DN |
217 | streamer_write_record_start (ob, LTO_ssa_name_ref); |
218 | streamer_write_uhwi (ob, SSA_NAME_VERSION (expr)); | |
f0efc7aa DN |
219 | break; |
220 | ||
221 | case FIELD_DECL: | |
412288f1 | 222 | streamer_write_record_start (ob, LTO_field_decl_ref); |
f0efc7aa DN |
223 | lto_output_field_decl_index (ob->decl_state, ob->main_stream, expr); |
224 | break; | |
225 | ||
226 | case FUNCTION_DECL: | |
412288f1 | 227 | streamer_write_record_start (ob, LTO_function_decl_ref); |
f0efc7aa DN |
228 | lto_output_fn_decl_index (ob->decl_state, ob->main_stream, expr); |
229 | break; | |
230 | ||
231 | case VAR_DECL: | |
232 | case DEBUG_EXPR_DECL: | |
b9393656 | 233 | gcc_assert (decl_function_context (expr) == NULL || TREE_STATIC (expr)); |
9aef8e95 | 234 | case PARM_DECL: |
412288f1 | 235 | streamer_write_record_start (ob, LTO_global_decl_ref); |
f0efc7aa DN |
236 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
237 | break; | |
238 | ||
239 | case CONST_DECL: | |
412288f1 | 240 | streamer_write_record_start (ob, LTO_const_decl_ref); |
f0efc7aa DN |
241 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
242 | break; | |
243 | ||
244 | case IMPORTED_DECL: | |
245 | gcc_assert (decl_function_context (expr) == NULL); | |
412288f1 | 246 | streamer_write_record_start (ob, LTO_imported_decl_ref); |
f0efc7aa DN |
247 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
248 | break; | |
249 | ||
250 | case TYPE_DECL: | |
412288f1 | 251 | streamer_write_record_start (ob, LTO_type_decl_ref); |
f0efc7aa DN |
252 | lto_output_type_decl_index (ob->decl_state, ob->main_stream, expr); |
253 | break; | |
254 | ||
5f673c6a | 255 | case NAMELIST_DECL: |
c39276b8 RB |
256 | streamer_write_record_start (ob, LTO_namelist_decl_ref); |
257 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); | |
258 | break; | |
5f673c6a | 259 | |
f0efc7aa | 260 | case NAMESPACE_DECL: |
412288f1 | 261 | streamer_write_record_start (ob, LTO_namespace_decl_ref); |
f0efc7aa DN |
262 | lto_output_namespace_decl_index (ob->decl_state, ob->main_stream, expr); |
263 | break; | |
264 | ||
265 | case LABEL_DECL: | |
412288f1 | 266 | streamer_write_record_start (ob, LTO_label_decl_ref); |
f0efc7aa DN |
267 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
268 | break; | |
269 | ||
270 | case RESULT_DECL: | |
412288f1 | 271 | streamer_write_record_start (ob, LTO_result_decl_ref); |
f0efc7aa DN |
272 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
273 | break; | |
274 | ||
275 | case TRANSLATION_UNIT_DECL: | |
412288f1 | 276 | streamer_write_record_start (ob, LTO_translation_unit_decl_ref); |
f0efc7aa DN |
277 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
278 | break; | |
279 | ||
280 | default: | |
b9393656 DN |
281 | /* No other node is indexable, so it should have been handled by |
282 | lto_output_tree. */ | |
283 | gcc_unreachable (); | |
284 | } | |
285 | } | |
286 | ||
287 | ||
288 | /* Return true if EXPR is a tree node that can be written to disk. */ | |
289 | ||
290 | static inline bool | |
291 | lto_is_streamable (tree expr) | |
292 | { | |
293 | enum tree_code code = TREE_CODE (expr); | |
294 | ||
295 | /* Notice that we reject SSA_NAMEs as well. We only emit the SSA | |
296 | name version in lto_output_tree_ref (see output_ssa_names). */ | |
297 | return !is_lang_specific (expr) | |
298 | && code != SSA_NAME | |
299 | && code != CALL_EXPR | |
300 | && code != LANG_TYPE | |
301 | && code != MODIFY_EXPR | |
302 | && code != INIT_EXPR | |
303 | && code != TARGET_EXPR | |
304 | && code != BIND_EXPR | |
305 | && code != WITH_CLEANUP_EXPR | |
306 | && code != STATEMENT_LIST | |
b9393656 DN |
307 | && (code == CASE_LABEL_EXPR |
308 | || code == DECL_EXPR | |
309 | || TREE_CODE_CLASS (code) != tcc_statement); | |
310 | } | |
311 | ||
155768d6 JH |
312 | /* Very rough estimate of streaming size of the initializer. If we ignored |
313 | presence of strings, we could simply just count number of non-indexable | |
314 | tree nodes and number of references to indexable nodes. Strings however | |
315 | may be very large and we do not want to dump them int othe global stream. | |
316 | ||
317 | Count the size of initializer until the size in DATA is positive. */ | |
318 | ||
319 | static tree | |
320 | subtract_estimated_size (tree *tp, int *ws, void *data) | |
321 | { | |
322 | long *sum = (long *)data; | |
323 | if (tree_is_indexable (*tp)) | |
324 | { | |
325 | /* Indexable tree is one reference to global stream. | |
326 | Guess it may be about 4 bytes. */ | |
327 | *sum -= 4; | |
328 | *ws = 0; | |
329 | } | |
330 | /* String table entry + base of tree node needs to be streamed. */ | |
331 | if (TREE_CODE (*tp) == STRING_CST) | |
332 | *sum -= TREE_STRING_LENGTH (*tp) + 8; | |
333 | else | |
334 | { | |
335 | /* Identifiers are also variable length but should not appear | |
336 | naked in constructor. */ | |
337 | gcc_checking_assert (TREE_CODE (*tp) != IDENTIFIER_NODE); | |
338 | /* We do not really make attempt to work out size of pickled tree, as | |
339 | it is very variable. Make it bigger than the reference. */ | |
340 | *sum -= 16; | |
341 | } | |
342 | if (*sum < 0) | |
343 | return *tp; | |
344 | return NULL_TREE; | |
345 | } | |
346 | ||
b9393656 | 347 | |
ee03e71d RB |
348 | /* For EXPR lookup and return what we want to stream to OB as DECL_INITIAL. */ |
349 | ||
350 | static tree | |
0b83e688 | 351 | get_symbol_initial_value (lto_symtab_encoder_t encoder, tree expr) |
ee03e71d RB |
352 | { |
353 | gcc_checking_assert (DECL_P (expr) | |
354 | && TREE_CODE (expr) != FUNCTION_DECL | |
355 | && TREE_CODE (expr) != TRANSLATION_UNIT_DECL); | |
356 | ||
357 | /* Handle DECL_INITIAL for symbols. */ | |
358 | tree initial = DECL_INITIAL (expr); | |
359 | if (TREE_CODE (expr) == VAR_DECL | |
360 | && (TREE_STATIC (expr) || DECL_EXTERNAL (expr)) | |
361 | && !DECL_IN_CONSTANT_POOL (expr) | |
362 | && initial) | |
363 | { | |
2c8326a5 | 364 | varpool_node *vnode; |
0b83e688 JH |
365 | /* Extra section needs about 30 bytes; do not produce it for simple |
366 | scalar values. */ | |
155768d6 | 367 | if (!(vnode = varpool_node::get (expr)) |
0b83e688 JH |
368 | || !lto_symtab_encoder_encode_initializer_p (encoder, vnode)) |
369 | initial = error_mark_node; | |
155768d6 JH |
370 | if (initial != error_mark_node) |
371 | { | |
372 | long max_size = 30; | |
373 | if (walk_tree (&initial, subtract_estimated_size, (void *)&max_size, | |
374 | NULL)) | |
375 | initial = error_mark_node; | |
376 | } | |
ee03e71d RB |
377 | } |
378 | ||
379 | return initial; | |
380 | } | |
381 | ||
382 | ||
b9393656 DN |
383 | /* Write a physical representation of tree node EXPR to output block |
384 | OB. If REF_P is true, the leaves of EXPR are emitted as references | |
385 | via lto_output_tree_ref. IX is the index into the streamer cache | |
386 | where EXPR is stored. */ | |
387 | ||
388 | static void | |
ee03e71d | 389 | lto_write_tree_1 (struct output_block *ob, tree expr, bool ref_p) |
b9393656 | 390 | { |
b9393656 DN |
391 | /* Pack all the non-pointer fields in EXPR into a bitpack and write |
392 | the resulting bitpack. */ | |
b6bf201e | 393 | streamer_write_tree_bitfields (ob, expr); |
b9393656 DN |
394 | |
395 | /* Write all the pointer fields in EXPR. */ | |
412288f1 | 396 | streamer_write_tree_body (ob, expr, ref_p); |
b9393656 DN |
397 | |
398 | /* Write any LTO-specific data to OB. */ | |
399 | if (DECL_P (expr) | |
400 | && TREE_CODE (expr) != FUNCTION_DECL | |
401 | && TREE_CODE (expr) != TRANSLATION_UNIT_DECL) | |
402 | { | |
403 | /* Handle DECL_INITIAL for symbols. */ | |
0b83e688 JH |
404 | tree initial = get_symbol_initial_value |
405 | (ob->decl_state->symtab_node_encoder, expr); | |
b9393656 DN |
406 | stream_write_tree (ob, initial, ref_p); |
407 | } | |
ee03e71d RB |
408 | } |
409 | ||
410 | /* Write a physical representation of tree node EXPR to output block | |
411 | OB. If REF_P is true, the leaves of EXPR are emitted as references | |
412 | via lto_output_tree_ref. IX is the index into the streamer cache | |
413 | where EXPR is stored. */ | |
414 | ||
415 | static void | |
416 | lto_write_tree (struct output_block *ob, tree expr, bool ref_p) | |
417 | { | |
418 | if (!lto_is_streamable (expr)) | |
419 | internal_error ("tree code %qs is not supported in LTO streams", | |
5806f481 | 420 | get_tree_code_name (TREE_CODE (expr))); |
ee03e71d RB |
421 | |
422 | /* Write the header, containing everything needed to materialize | |
423 | EXPR on the reading side. */ | |
424 | streamer_write_tree_header (ob, expr); | |
425 | ||
426 | lto_write_tree_1 (ob, expr, ref_p); | |
b9393656 DN |
427 | |
428 | /* Mark the end of EXPR. */ | |
412288f1 | 429 | streamer_write_zero (ob); |
b9393656 DN |
430 | } |
431 | ||
cec34ee5 EB |
432 | /* Emit the physical representation of tree node EXPR to output block OB, |
433 | If THIS_REF_P is true, the leaves of EXPR are emitted as references via | |
434 | lto_output_tree_ref. REF_P is used for streaming siblings of EXPR. */ | |
ee03e71d RB |
435 | |
436 | static void | |
437 | lto_output_tree_1 (struct output_block *ob, tree expr, hashval_t hash, | |
438 | bool ref_p, bool this_ref_p) | |
439 | { | |
440 | unsigned ix; | |
441 | ||
442 | gcc_checking_assert (expr != NULL_TREE | |
443 | && !(this_ref_p && tree_is_indexable (expr))); | |
444 | ||
445 | bool exists_p = streamer_tree_cache_insert (ob->writer_cache, | |
446 | expr, hash, &ix); | |
447 | gcc_assert (!exists_p); | |
448 | if (streamer_handle_as_builtin_p (expr)) | |
449 | { | |
450 | /* MD and NORMAL builtins do not need to be written out | |
451 | completely as they are always instantiated by the | |
452 | compiler on startup. The only builtins that need to | |
453 | be written out are BUILT_IN_FRONTEND. For all other | |
454 | builtins, we simply write the class and code. */ | |
455 | streamer_write_builtin (ob, expr); | |
456 | } | |
457 | else if (TREE_CODE (expr) == INTEGER_CST | |
458 | && !TREE_OVERFLOW (expr)) | |
459 | { | |
460 | /* Shared INTEGER_CST nodes are special because they need their | |
461 | original type to be materialized by the reader (to implement | |
462 | TYPE_CACHED_VALUES). */ | |
463 | streamer_write_integer_cst (ob, expr, ref_p); | |
464 | } | |
465 | else | |
466 | { | |
467 | /* This is the first time we see EXPR, write its fields | |
468 | to OB. */ | |
469 | lto_write_tree (ob, expr, ref_p); | |
470 | } | |
471 | } | |
472 | ||
a4b0388b | 473 | class DFS |
ee03e71d | 474 | { |
a4b0388b JH |
475 | public: |
476 | DFS (struct output_block *ob, tree expr, bool ref_p, bool this_ref_p, | |
477 | bool single_p); | |
478 | ~DFS (); | |
479 | ||
480 | struct scc_entry | |
481 | { | |
482 | tree t; | |
483 | hashval_t hash; | |
484 | }; | |
485 | vec<scc_entry> sccstack; | |
486 | ||
487 | private: | |
488 | struct sccs | |
489 | { | |
490 | unsigned int dfsnum; | |
491 | unsigned int low; | |
492 | }; | |
bbf043c2 JJ |
493 | struct worklist |
494 | { | |
495 | tree expr; | |
496 | sccs *from_state; | |
497 | sccs *cstate; | |
498 | bool ref_p; | |
499 | bool this_ref_p; | |
500 | }; | |
a4b0388b JH |
501 | |
502 | static int scc_entry_compare (const void *, const void *); | |
503 | ||
504 | void DFS_write_tree_body (struct output_block *ob, | |
bbf043c2 | 505 | tree expr, sccs *expr_state, bool ref_p); |
a4b0388b JH |
506 | |
507 | void DFS_write_tree (struct output_block *ob, sccs *from_state, | |
bbf043c2 JJ |
508 | tree expr, bool ref_p, bool this_ref_p); |
509 | ||
a4b0388b | 510 | hashval_t |
cec34ee5 EB |
511 | hash_scc (struct output_block *ob, unsigned first, unsigned size, |
512 | bool ref_p, bool this_ref_p); | |
a4b0388b | 513 | |
39c8aaa4 | 514 | hash_map<tree, sccs *> sccstate; |
bbf043c2 | 515 | vec<worklist> worklist_vec; |
a4b0388b | 516 | struct obstack sccstate_obstack; |
ee03e71d RB |
517 | }; |
518 | ||
cec34ee5 EB |
519 | /* Emit the physical representation of tree node EXPR to output block OB, |
520 | using depth-first search on the subgraph. If THIS_REF_P is true, the | |
521 | leaves of EXPR are emitted as references via lto_output_tree_ref. | |
522 | REF_P is used for streaming siblings of EXPR. If SINGLE_P is true, | |
523 | this is for a rewalk of a single leaf SCC. */ | |
524 | ||
a4b0388b JH |
525 | DFS::DFS (struct output_block *ob, tree expr, bool ref_p, bool this_ref_p, |
526 | bool single_p) | |
ee03e71d | 527 | { |
bbf043c2 | 528 | unsigned int next_dfs_num = 1; |
a4b0388b | 529 | sccstack.create (0); |
a4b0388b | 530 | gcc_obstack_init (&sccstate_obstack); |
bbf043c2 JJ |
531 | worklist_vec = vNULL; |
532 | DFS_write_tree (ob, NULL, expr, ref_p, this_ref_p); | |
533 | while (!worklist_vec.is_empty ()) | |
534 | { | |
535 | worklist &w = worklist_vec.last (); | |
536 | expr = w.expr; | |
537 | sccs *from_state = w.from_state; | |
538 | sccs *cstate = w.cstate; | |
539 | ref_p = w.ref_p; | |
540 | this_ref_p = w.this_ref_p; | |
541 | if (cstate == NULL) | |
542 | { | |
543 | sccs **slot = &sccstate.get_or_insert (expr); | |
544 | cstate = *slot; | |
545 | if (cstate) | |
546 | { | |
547 | gcc_checking_assert (from_state); | |
548 | if (cstate->dfsnum < from_state->dfsnum) | |
549 | from_state->low = MIN (cstate->dfsnum, from_state->low); | |
550 | worklist_vec.pop (); | |
551 | continue; | |
552 | } | |
553 | ||
554 | scc_entry e = { expr, 0 }; | |
555 | /* Not yet visited. DFS recurse and push it onto the stack. */ | |
556 | *slot = cstate = XOBNEW (&sccstate_obstack, struct sccs); | |
557 | sccstack.safe_push (e); | |
558 | cstate->dfsnum = next_dfs_num++; | |
559 | cstate->low = cstate->dfsnum; | |
560 | w.cstate = cstate; | |
561 | ||
562 | if (streamer_handle_as_builtin_p (expr)) | |
563 | ; | |
564 | else if (TREE_CODE (expr) == INTEGER_CST | |
565 | && !TREE_OVERFLOW (expr)) | |
566 | DFS_write_tree (ob, cstate, TREE_TYPE (expr), ref_p, ref_p); | |
567 | else | |
568 | { | |
569 | DFS_write_tree_body (ob, expr, cstate, ref_p); | |
570 | ||
571 | /* Walk any LTO-specific edges. */ | |
572 | if (DECL_P (expr) | |
573 | && TREE_CODE (expr) != FUNCTION_DECL | |
574 | && TREE_CODE (expr) != TRANSLATION_UNIT_DECL) | |
575 | { | |
576 | /* Handle DECL_INITIAL for symbols. */ | |
577 | tree initial | |
578 | = get_symbol_initial_value (ob->decl_state->symtab_node_encoder, | |
579 | expr); | |
580 | DFS_write_tree (ob, cstate, initial, ref_p, ref_p); | |
581 | } | |
582 | } | |
583 | continue; | |
584 | } | |
585 | ||
586 | /* See if we found an SCC. */ | |
587 | if (cstate->low == cstate->dfsnum) | |
588 | { | |
589 | unsigned first, size; | |
590 | tree x; | |
591 | ||
cec34ee5 | 592 | /* If we are re-walking a single leaf SCC just pop it, |
bbf043c2 JJ |
593 | let earlier worklist item access the sccstack. */ |
594 | if (single_p) | |
595 | { | |
596 | worklist_vec.pop (); | |
597 | continue; | |
598 | } | |
599 | ||
600 | /* Pop the SCC and compute its size. */ | |
601 | first = sccstack.length (); | |
602 | do | |
603 | { | |
604 | x = sccstack[--first].t; | |
605 | } | |
606 | while (x != expr); | |
607 | size = sccstack.length () - first; | |
608 | ||
609 | /* No need to compute hashes for LTRANS units, we don't perform | |
610 | any merging there. */ | |
611 | hashval_t scc_hash = 0; | |
612 | unsigned scc_entry_len = 0; | |
613 | if (!flag_wpa) | |
614 | { | |
cec34ee5 | 615 | scc_hash = hash_scc (ob, first, size, ref_p, this_ref_p); |
bbf043c2 JJ |
616 | |
617 | /* Put the entries with the least number of collisions first. */ | |
618 | unsigned entry_start = 0; | |
619 | scc_entry_len = size + 1; | |
620 | for (unsigned i = 0; i < size;) | |
621 | { | |
622 | unsigned from = i; | |
623 | for (i = i + 1; i < size | |
624 | && (sccstack[first + i].hash | |
625 | == sccstack[first + from].hash); ++i) | |
626 | ; | |
627 | if (i - from < scc_entry_len) | |
628 | { | |
629 | scc_entry_len = i - from; | |
630 | entry_start = from; | |
631 | } | |
632 | } | |
633 | for (unsigned i = 0; i < scc_entry_len; ++i) | |
6b4db501 MM |
634 | std::swap (sccstack[first + i], |
635 | sccstack[first + entry_start + i]); | |
bbf043c2 | 636 | |
b2b29377 MM |
637 | /* We already sorted SCC deterministically in hash_scc. */ |
638 | ||
639 | /* Check that we have only one SCC. | |
640 | Naturally we may have conflicts if hash function is not | |
641 | strong enough. Lets see how far this gets. */ | |
642 | gcc_checking_assert (scc_entry_len == 1); | |
bbf043c2 JJ |
643 | } |
644 | ||
645 | /* Write LTO_tree_scc. */ | |
646 | streamer_write_record_start (ob, LTO_tree_scc); | |
647 | streamer_write_uhwi (ob, size); | |
648 | streamer_write_uhwi (ob, scc_hash); | |
649 | ||
650 | /* Write size-1 SCCs without wrapping them inside SCC bundles. | |
651 | All INTEGER_CSTs need to be handled this way as we need | |
652 | their type to materialize them. Also builtins are handled | |
653 | this way. | |
654 | ??? We still wrap these in LTO_tree_scc so at the | |
655 | input side we can properly identify the tree we want | |
656 | to ultimatively return. */ | |
657 | if (size == 1) | |
658 | lto_output_tree_1 (ob, expr, scc_hash, ref_p, this_ref_p); | |
659 | else | |
660 | { | |
661 | /* Write the size of the SCC entry candidates. */ | |
662 | streamer_write_uhwi (ob, scc_entry_len); | |
663 | ||
664 | /* Write all headers and populate the streamer cache. */ | |
665 | for (unsigned i = 0; i < size; ++i) | |
666 | { | |
667 | hashval_t hash = sccstack[first+i].hash; | |
668 | tree t = sccstack[first+i].t; | |
669 | bool exists_p = streamer_tree_cache_insert (ob->writer_cache, | |
670 | t, hash, NULL); | |
671 | gcc_assert (!exists_p); | |
672 | ||
673 | if (!lto_is_streamable (t)) | |
674 | internal_error ("tree code %qs is not supported " | |
675 | "in LTO streams", | |
676 | get_tree_code_name (TREE_CODE (t))); | |
677 | ||
678 | gcc_checking_assert (!streamer_handle_as_builtin_p (t)); | |
679 | ||
680 | /* Write the header, containing everything needed to | |
681 | materialize EXPR on the reading side. */ | |
682 | streamer_write_tree_header (ob, t); | |
683 | } | |
684 | ||
685 | /* Write the bitpacks and tree references. */ | |
686 | for (unsigned i = 0; i < size; ++i) | |
687 | { | |
688 | lto_write_tree_1 (ob, sccstack[first+i].t, ref_p); | |
689 | ||
690 | /* Mark the end of the tree. */ | |
691 | streamer_write_zero (ob); | |
692 | } | |
693 | } | |
694 | ||
695 | /* Finally truncate the vector. */ | |
696 | sccstack.truncate (first); | |
697 | ||
698 | if (from_state) | |
699 | from_state->low = MIN (from_state->low, cstate->low); | |
700 | worklist_vec.pop (); | |
701 | continue; | |
702 | } | |
703 | ||
704 | gcc_checking_assert (from_state); | |
705 | from_state->low = MIN (from_state->low, cstate->low); | |
706 | if (cstate->dfsnum < from_state->dfsnum) | |
707 | from_state->low = MIN (cstate->dfsnum, from_state->low); | |
708 | worklist_vec.pop (); | |
709 | } | |
710 | worklist_vec.release (); | |
a4b0388b | 711 | } |
ee03e71d | 712 | |
a4b0388b JH |
713 | DFS::~DFS () |
714 | { | |
715 | sccstack.release (); | |
a4b0388b JH |
716 | obstack_free (&sccstate_obstack, NULL); |
717 | } | |
ee03e71d RB |
718 | |
719 | /* Handle the tree EXPR in the DFS walk with SCC state EXPR_STATE and | |
720 | DFS recurse for all tree edges originating from it. */ | |
721 | ||
a4b0388b JH |
722 | void |
723 | DFS::DFS_write_tree_body (struct output_block *ob, | |
bbf043c2 | 724 | tree expr, sccs *expr_state, bool ref_p) |
ee03e71d RB |
725 | { |
726 | #define DFS_follow_tree_edge(DEST) \ | |
bbf043c2 | 727 | DFS_write_tree (ob, expr_state, DEST, ref_p, ref_p) |
ee03e71d RB |
728 | |
729 | enum tree_code code; | |
730 | ||
731 | code = TREE_CODE (expr); | |
732 | ||
733 | if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) | |
734 | { | |
735 | if (TREE_CODE (expr) != IDENTIFIER_NODE) | |
736 | DFS_follow_tree_edge (TREE_TYPE (expr)); | |
737 | } | |
738 | ||
739 | if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) | |
740 | { | |
741 | for (unsigned i = 0; i < VECTOR_CST_NELTS (expr); ++i) | |
742 | DFS_follow_tree_edge (VECTOR_CST_ELT (expr, i)); | |
743 | } | |
744 | ||
745 | if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) | |
746 | { | |
747 | DFS_follow_tree_edge (TREE_REALPART (expr)); | |
748 | DFS_follow_tree_edge (TREE_IMAGPART (expr)); | |
749 | } | |
750 | ||
751 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) | |
752 | { | |
753 | /* Drop names that were created for anonymous entities. */ | |
754 | if (DECL_NAME (expr) | |
755 | && TREE_CODE (DECL_NAME (expr)) == IDENTIFIER_NODE | |
ee47f74e | 756 | && anon_aggrname_p (DECL_NAME (expr))) |
ee03e71d RB |
757 | ; |
758 | else | |
759 | DFS_follow_tree_edge (DECL_NAME (expr)); | |
760 | DFS_follow_tree_edge (DECL_CONTEXT (expr)); | |
761 | } | |
762 | ||
763 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
764 | { | |
765 | DFS_follow_tree_edge (DECL_SIZE (expr)); | |
766 | DFS_follow_tree_edge (DECL_SIZE_UNIT (expr)); | |
767 | ||
768 | /* Note, DECL_INITIAL is not handled here. Since DECL_INITIAL needs | |
769 | special handling in LTO, it must be handled by streamer hooks. */ | |
770 | ||
771 | DFS_follow_tree_edge (DECL_ATTRIBUTES (expr)); | |
772 | ||
773 | /* Do not follow DECL_ABSTRACT_ORIGIN. We cannot handle debug information | |
774 | for early inlining so drop it on the floor instead of ICEing in | |
6b9ac179 JH |
775 | dwarf2out.c. |
776 | We however use DECL_ABSTRACT_ORIGIN == error_mark_node to mark | |
777 | declarations which should be eliminated by decl merging. Be sure none | |
778 | leaks to this point. */ | |
779 | gcc_assert (DECL_ABSTRACT_ORIGIN (expr) != error_mark_node); | |
ee03e71d RB |
780 | |
781 | if ((TREE_CODE (expr) == VAR_DECL | |
782 | || TREE_CODE (expr) == PARM_DECL) | |
783 | && DECL_HAS_VALUE_EXPR_P (expr)) | |
784 | DFS_follow_tree_edge (DECL_VALUE_EXPR (expr)); | |
785 | if (TREE_CODE (expr) == VAR_DECL) | |
786 | DFS_follow_tree_edge (DECL_DEBUG_EXPR (expr)); | |
787 | } | |
788 | ||
789 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) | |
790 | { | |
815effe1 | 791 | if (TREE_CODE (expr) == TYPE_DECL) |
ee03e71d | 792 | DFS_follow_tree_edge (DECL_ORIGINAL_TYPE (expr)); |
ee03e71d RB |
793 | } |
794 | ||
795 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
796 | { | |
797 | /* Make sure we don't inadvertently set the assembler name. */ | |
798 | if (DECL_ASSEMBLER_NAME_SET_P (expr)) | |
799 | DFS_follow_tree_edge (DECL_ASSEMBLER_NAME (expr)); | |
ee03e71d RB |
800 | } |
801 | ||
802 | if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) | |
803 | { | |
804 | DFS_follow_tree_edge (DECL_FIELD_OFFSET (expr)); | |
805 | DFS_follow_tree_edge (DECL_BIT_FIELD_TYPE (expr)); | |
806 | DFS_follow_tree_edge (DECL_BIT_FIELD_REPRESENTATIVE (expr)); | |
807 | DFS_follow_tree_edge (DECL_FIELD_BIT_OFFSET (expr)); | |
808 | DFS_follow_tree_edge (DECL_FCONTEXT (expr)); | |
809 | } | |
810 | ||
811 | if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
812 | { | |
aaf8a23e | 813 | DFS_follow_tree_edge (DECL_VINDEX (expr)); |
ee03e71d | 814 | DFS_follow_tree_edge (DECL_FUNCTION_PERSONALITY (expr)); |
325fe981 | 815 | DFS_follow_tree_edge (DECL_FUNCTION_SPECIFIC_TARGET (expr)); |
ee03e71d RB |
816 | DFS_follow_tree_edge (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr)); |
817 | } | |
818 | ||
819 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
820 | { | |
821 | DFS_follow_tree_edge (TYPE_SIZE (expr)); | |
822 | DFS_follow_tree_edge (TYPE_SIZE_UNIT (expr)); | |
823 | DFS_follow_tree_edge (TYPE_ATTRIBUTES (expr)); | |
824 | DFS_follow_tree_edge (TYPE_NAME (expr)); | |
825 | /* Do not follow TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be | |
826 | reconstructed during fixup. */ | |
827 | /* Do not follow TYPE_NEXT_VARIANT, we reconstruct the variant lists | |
828 | during fixup. */ | |
829 | DFS_follow_tree_edge (TYPE_MAIN_VARIANT (expr)); | |
830 | DFS_follow_tree_edge (TYPE_CONTEXT (expr)); | |
831 | /* TYPE_CANONICAL is re-computed during type merging, so no need | |
832 | to follow it here. */ | |
833 | DFS_follow_tree_edge (TYPE_STUB_DECL (expr)); | |
834 | } | |
835 | ||
836 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) | |
837 | { | |
838 | if (TREE_CODE (expr) == ENUMERAL_TYPE) | |
839 | DFS_follow_tree_edge (TYPE_VALUES (expr)); | |
840 | else if (TREE_CODE (expr) == ARRAY_TYPE) | |
841 | DFS_follow_tree_edge (TYPE_DOMAIN (expr)); | |
842 | else if (RECORD_OR_UNION_TYPE_P (expr)) | |
843 | for (tree t = TYPE_FIELDS (expr); t; t = TREE_CHAIN (t)) | |
844 | DFS_follow_tree_edge (t); | |
845 | else if (TREE_CODE (expr) == FUNCTION_TYPE | |
846 | || TREE_CODE (expr) == METHOD_TYPE) | |
847 | DFS_follow_tree_edge (TYPE_ARG_TYPES (expr)); | |
848 | ||
849 | if (!POINTER_TYPE_P (expr)) | |
850 | DFS_follow_tree_edge (TYPE_MINVAL (expr)); | |
851 | DFS_follow_tree_edge (TYPE_MAXVAL (expr)); | |
852 | if (RECORD_OR_UNION_TYPE_P (expr)) | |
853 | DFS_follow_tree_edge (TYPE_BINFO (expr)); | |
854 | } | |
855 | ||
856 | if (CODE_CONTAINS_STRUCT (code, TS_LIST)) | |
857 | { | |
858 | DFS_follow_tree_edge (TREE_PURPOSE (expr)); | |
859 | DFS_follow_tree_edge (TREE_VALUE (expr)); | |
860 | DFS_follow_tree_edge (TREE_CHAIN (expr)); | |
861 | } | |
862 | ||
863 | if (CODE_CONTAINS_STRUCT (code, TS_VEC)) | |
864 | { | |
865 | for (int i = 0; i < TREE_VEC_LENGTH (expr); i++) | |
866 | DFS_follow_tree_edge (TREE_VEC_ELT (expr, i)); | |
867 | } | |
868 | ||
869 | if (CODE_CONTAINS_STRUCT (code, TS_EXP)) | |
870 | { | |
871 | for (int i = 0; i < TREE_OPERAND_LENGTH (expr); i++) | |
872 | DFS_follow_tree_edge (TREE_OPERAND (expr, i)); | |
873 | DFS_follow_tree_edge (TREE_BLOCK (expr)); | |
874 | } | |
875 | ||
876 | if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) | |
877 | { | |
878 | for (tree t = BLOCK_VARS (expr); t; t = TREE_CHAIN (t)) | |
47503a49 RB |
879 | if (VAR_OR_FUNCTION_DECL_P (t) |
880 | && DECL_EXTERNAL (t)) | |
881 | /* We have to stream externals in the block chain as | |
882 | non-references. See also | |
883 | tree-streamer-out.c:streamer_write_chain. */ | |
bbf043c2 | 884 | DFS_write_tree (ob, expr_state, t, ref_p, false); |
47503a49 | 885 | else |
ee03e71d RB |
886 | DFS_follow_tree_edge (t); |
887 | ||
888 | DFS_follow_tree_edge (BLOCK_SUPERCONTEXT (expr)); | |
889 | ||
890 | /* Follow BLOCK_ABSTRACT_ORIGIN for the limited cases we can | |
891 | handle - those that represent inlined function scopes. | |
892 | For the drop rest them on the floor instead of ICEing | |
893 | in dwarf2out.c. */ | |
894 | if (inlined_function_outer_scope_p (expr)) | |
895 | { | |
896 | tree ultimate_origin = block_ultimate_origin (expr); | |
897 | DFS_follow_tree_edge (ultimate_origin); | |
898 | } | |
899 | /* Do not follow BLOCK_NONLOCALIZED_VARS. We cannot handle debug | |
900 | information for early inlined BLOCKs so drop it on the floor instead | |
901 | of ICEing in dwarf2out.c. */ | |
902 | ||
903 | /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO | |
904 | streaming time. */ | |
905 | ||
906 | /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this | |
907 | list is re-constructed from BLOCK_SUPERCONTEXT. */ | |
908 | } | |
909 | ||
910 | if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) | |
911 | { | |
912 | unsigned i; | |
913 | tree t; | |
914 | ||
915 | /* Note that the number of BINFO slots has already been emitted in | |
916 | EXPR's header (see streamer_write_tree_header) because this length | |
917 | is needed to build the empty BINFO node on the reader side. */ | |
918 | FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (expr), i, t) | |
919 | DFS_follow_tree_edge (t); | |
920 | DFS_follow_tree_edge (BINFO_OFFSET (expr)); | |
921 | DFS_follow_tree_edge (BINFO_VTABLE (expr)); | |
922 | DFS_follow_tree_edge (BINFO_VPTR_FIELD (expr)); | |
923 | ||
924 | /* The number of BINFO_BASE_ACCESSES has already been emitted in | |
925 | EXPR's bitfield section. */ | |
926 | FOR_EACH_VEC_SAFE_ELT (BINFO_BASE_ACCESSES (expr), i, t) | |
927 | DFS_follow_tree_edge (t); | |
928 | ||
c01c111b JH |
929 | /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX |
930 | and BINFO_VPTR_INDEX; these are used by C++ FE only. */ | |
ee03e71d RB |
931 | } |
932 | ||
933 | if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) | |
934 | { | |
935 | unsigned i; | |
936 | tree index, value; | |
937 | ||
938 | FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value) | |
939 | { | |
940 | DFS_follow_tree_edge (index); | |
941 | DFS_follow_tree_edge (value); | |
942 | } | |
943 | } | |
944 | ||
c193f58b JJ |
945 | if (code == OMP_CLAUSE) |
946 | { | |
947 | int i; | |
948 | for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++) | |
949 | DFS_follow_tree_edge (OMP_CLAUSE_OPERAND (expr, i)); | |
950 | DFS_follow_tree_edge (OMP_CLAUSE_CHAIN (expr)); | |
951 | } | |
952 | ||
ee03e71d RB |
953 | #undef DFS_follow_tree_edge |
954 | } | |
955 | ||
a4b0388b JH |
956 | /* Return a hash value for the tree T. |
957 | CACHE holds hash values of trees outside current SCC. MAP, if non-NULL, | |
958 | may hold hash values if trees inside current SCC. */ | |
ee03e71d RB |
959 | |
960 | static hashval_t | |
a4b0388b | 961 | hash_tree (struct streamer_tree_cache_d *cache, hash_map<tree, hashval_t> *map, tree t) |
ee03e71d | 962 | { |
50de5793 | 963 | inchash::hash hstate; |
e8326772 | 964 | |
ee03e71d RB |
965 | #define visit(SIBLING) \ |
966 | do { \ | |
967 | unsigned ix; \ | |
a4b0388b JH |
968 | if (!SIBLING) \ |
969 | hstate.add_int (0); \ | |
970 | else if (streamer_tree_cache_lookup (cache, SIBLING, &ix)) \ | |
e8326772 | 971 | hstate.add_int (streamer_tree_cache_get_hash (cache, ix)); \ |
a4b0388b JH |
972 | else if (map) \ |
973 | hstate.add_int (*map->get (SIBLING)); \ | |
974 | else \ | |
975 | hstate.add_int (1); \ | |
ee03e71d RB |
976 | } while (0) |
977 | ||
978 | /* Hash TS_BASE. */ | |
979 | enum tree_code code = TREE_CODE (t); | |
e8326772 | 980 | hstate.add_int (code); |
ee03e71d RB |
981 | if (!TYPE_P (t)) |
982 | { | |
e8326772 AK |
983 | hstate.add_flag (TREE_SIDE_EFFECTS (t)); |
984 | hstate.add_flag (TREE_CONSTANT (t)); | |
985 | hstate.add_flag (TREE_READONLY (t)); | |
986 | hstate.add_flag (TREE_PUBLIC (t)); | |
ee03e71d | 987 | } |
e8326772 AK |
988 | hstate.add_flag (TREE_ADDRESSABLE (t)); |
989 | hstate.add_flag (TREE_THIS_VOLATILE (t)); | |
ee03e71d | 990 | if (DECL_P (t)) |
e8326772 | 991 | hstate.add_flag (DECL_UNSIGNED (t)); |
ee03e71d | 992 | else if (TYPE_P (t)) |
e8326772 | 993 | hstate.add_flag (TYPE_UNSIGNED (t)); |
ee03e71d | 994 | if (TYPE_P (t)) |
e8326772 | 995 | hstate.add_flag (TYPE_ARTIFICIAL (t)); |
ee03e71d | 996 | else |
e8326772 AK |
997 | hstate.add_flag (TREE_NO_WARNING (t)); |
998 | hstate.add_flag (TREE_NOTHROW (t)); | |
999 | hstate.add_flag (TREE_STATIC (t)); | |
1000 | hstate.add_flag (TREE_PROTECTED (t)); | |
1001 | hstate.add_flag (TREE_DEPRECATED (t)); | |
ee03e71d | 1002 | if (code != TREE_BINFO) |
e8326772 | 1003 | hstate.add_flag (TREE_PRIVATE (t)); |
ee03e71d | 1004 | if (TYPE_P (t)) |
e8326772 | 1005 | { |
ee45a32d EB |
1006 | hstate.add_flag (AGGREGATE_TYPE_P (t) |
1007 | ? TYPE_REVERSE_STORAGE_ORDER (t) : TYPE_SATURATING (t)); | |
e8326772 AK |
1008 | hstate.add_flag (TYPE_ADDR_SPACE (t)); |
1009 | } | |
ee03e71d | 1010 | else if (code == SSA_NAME) |
e8326772 AK |
1011 | hstate.add_flag (SSA_NAME_IS_DEFAULT_DEF (t)); |
1012 | hstate.commit_flag (); | |
ee03e71d RB |
1013 | |
1014 | if (CODE_CONTAINS_STRUCT (code, TS_INT_CST)) | |
1015 | { | |
807e902e | 1016 | int i; |
e8326772 AK |
1017 | hstate.add_wide_int (TREE_INT_CST_NUNITS (t)); |
1018 | hstate.add_wide_int (TREE_INT_CST_EXT_NUNITS (t)); | |
807e902e | 1019 | for (i = 0; i < TREE_INT_CST_NUNITS (t); i++) |
e8326772 | 1020 | hstate.add_wide_int (TREE_INT_CST_ELT (t, i)); |
ee03e71d RB |
1021 | } |
1022 | ||
1023 | if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST)) | |
1024 | { | |
1025 | REAL_VALUE_TYPE r = TREE_REAL_CST (t); | |
e8326772 AK |
1026 | hstate.add_flag (r.cl); |
1027 | hstate.add_flag (r.sign); | |
1028 | hstate.add_flag (r.signalling); | |
1029 | hstate.add_flag (r.canonical); | |
1030 | hstate.commit_flag (); | |
1031 | hstate.add_int (r.uexp); | |
1032 | hstate.add (r.sig, sizeof (r.sig)); | |
ee03e71d RB |
1033 | } |
1034 | ||
1035 | if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST)) | |
1036 | { | |
1037 | FIXED_VALUE_TYPE f = TREE_FIXED_CST (t); | |
e8326772 AK |
1038 | hstate.add_int (f.mode); |
1039 | hstate.add_int (f.data.low); | |
1040 | hstate.add_int (f.data.high); | |
ee03e71d RB |
1041 | } |
1042 | ||
1043 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
1044 | { | |
e8326772 AK |
1045 | hstate.add_wide_int (DECL_MODE (t)); |
1046 | hstate.add_flag (DECL_NONLOCAL (t)); | |
1047 | hstate.add_flag (DECL_VIRTUAL_P (t)); | |
1048 | hstate.add_flag (DECL_IGNORED_P (t)); | |
00de328a | 1049 | hstate.add_flag (DECL_ABSTRACT_P (t)); |
e8326772 AK |
1050 | hstate.add_flag (DECL_ARTIFICIAL (t)); |
1051 | hstate.add_flag (DECL_USER_ALIGN (t)); | |
1052 | hstate.add_flag (DECL_PRESERVE_P (t)); | |
1053 | hstate.add_flag (DECL_EXTERNAL (t)); | |
1054 | hstate.add_flag (DECL_GIMPLE_REG_P (t)); | |
1055 | hstate.commit_flag (); | |
1056 | hstate.add_int (DECL_ALIGN (t)); | |
ee03e71d RB |
1057 | if (code == LABEL_DECL) |
1058 | { | |
e8326772 AK |
1059 | hstate.add_int (EH_LANDING_PAD_NR (t)); |
1060 | hstate.add_int (LABEL_DECL_UID (t)); | |
ee03e71d RB |
1061 | } |
1062 | else if (code == FIELD_DECL) | |
1063 | { | |
e8326772 AK |
1064 | hstate.add_flag (DECL_PACKED (t)); |
1065 | hstate.add_flag (DECL_NONADDRESSABLE_P (t)); | |
1066 | hstate.add_int (DECL_OFFSET_ALIGN (t)); | |
ee03e71d RB |
1067 | } |
1068 | else if (code == VAR_DECL) | |
1069 | { | |
e8326772 AK |
1070 | hstate.add_flag (DECL_HAS_DEBUG_EXPR_P (t)); |
1071 | hstate.add_flag (DECL_NONLOCAL_FRAME (t)); | |
ee03e71d RB |
1072 | } |
1073 | if (code == RESULT_DECL | |
1074 | || code == PARM_DECL | |
1075 | || code == VAR_DECL) | |
1076 | { | |
e8326772 | 1077 | hstate.add_flag (DECL_BY_REFERENCE (t)); |
ee03e71d RB |
1078 | if (code == VAR_DECL |
1079 | || code == PARM_DECL) | |
e8326772 | 1080 | hstate.add_flag (DECL_HAS_VALUE_EXPR_P (t)); |
ee03e71d | 1081 | } |
e8326772 | 1082 | hstate.commit_flag (); |
ee03e71d RB |
1083 | } |
1084 | ||
1085 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL)) | |
e8326772 | 1086 | hstate.add_int (DECL_REGISTER (t)); |
ee03e71d RB |
1087 | |
1088 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
1089 | { | |
e8326772 AK |
1090 | hstate.add_flag (DECL_COMMON (t)); |
1091 | hstate.add_flag (DECL_DLLIMPORT_P (t)); | |
1092 | hstate.add_flag (DECL_WEAK (t)); | |
1093 | hstate.add_flag (DECL_SEEN_IN_BIND_EXPR_P (t)); | |
1094 | hstate.add_flag (DECL_COMDAT (t)); | |
1095 | hstate.add_flag (DECL_VISIBILITY_SPECIFIED (t)); | |
1096 | hstate.add_int (DECL_VISIBILITY (t)); | |
ee03e71d RB |
1097 | if (code == VAR_DECL) |
1098 | { | |
c01c111b | 1099 | /* DECL_IN_TEXT_SECTION is set during final asm output only. */ |
e8326772 AK |
1100 | hstate.add_flag (DECL_HARD_REGISTER (t)); |
1101 | hstate.add_flag (DECL_IN_CONSTANT_POOL (t)); | |
ee03e71d | 1102 | } |
0170f33c | 1103 | if (TREE_CODE (t) == FUNCTION_DECL) |
e8326772 AK |
1104 | { |
1105 | hstate.add_flag (DECL_FINAL_P (t)); | |
1106 | hstate.add_flag (DECL_CXX_CONSTRUCTOR_P (t)); | |
1107 | hstate.add_flag (DECL_CXX_DESTRUCTOR_P (t)); | |
1108 | } | |
1109 | hstate.commit_flag (); | |
ee03e71d RB |
1110 | } |
1111 | ||
1112 | if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
1113 | { | |
e8326772 AK |
1114 | hstate.add_int (DECL_BUILT_IN_CLASS (t)); |
1115 | hstate.add_flag (DECL_STATIC_CONSTRUCTOR (t)); | |
1116 | hstate.add_flag (DECL_STATIC_DESTRUCTOR (t)); | |
1117 | hstate.add_flag (DECL_UNINLINABLE (t)); | |
1118 | hstate.add_flag (DECL_POSSIBLY_INLINED (t)); | |
1119 | hstate.add_flag (DECL_IS_NOVOPS (t)); | |
1120 | hstate.add_flag (DECL_IS_RETURNS_TWICE (t)); | |
1121 | hstate.add_flag (DECL_IS_MALLOC (t)); | |
1122 | hstate.add_flag (DECL_IS_OPERATOR_NEW (t)); | |
1123 | hstate.add_flag (DECL_DECLARED_INLINE_P (t)); | |
1124 | hstate.add_flag (DECL_STATIC_CHAIN (t)); | |
1125 | hstate.add_flag (DECL_NO_INLINE_WARNING_P (t)); | |
1126 | hstate.add_flag (DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (t)); | |
1127 | hstate.add_flag (DECL_NO_LIMIT_STACK (t)); | |
1128 | hstate.add_flag (DECL_DISREGARD_INLINE_LIMITS (t)); | |
1129 | hstate.add_flag (DECL_PURE_P (t)); | |
1130 | hstate.add_flag (DECL_LOOPING_CONST_OR_PURE_P (t)); | |
1131 | hstate.commit_flag (); | |
ee03e71d | 1132 | if (DECL_BUILT_IN_CLASS (t) != NOT_BUILT_IN) |
e8326772 | 1133 | hstate.add_int (DECL_FUNCTION_CODE (t)); |
ee03e71d RB |
1134 | } |
1135 | ||
1136 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
1137 | { | |
e8326772 AK |
1138 | hstate.add_wide_int (TYPE_MODE (t)); |
1139 | hstate.add_flag (TYPE_STRING_FLAG (t)); | |
351d90f4 JH |
1140 | /* TYPE_NO_FORCE_BLK is private to stor-layout and need |
1141 | no streaming. */ | |
e8326772 AK |
1142 | hstate.add_flag (TYPE_NEEDS_CONSTRUCTING (t)); |
1143 | hstate.add_flag (TYPE_PACKED (t)); | |
1144 | hstate.add_flag (TYPE_RESTRICT (t)); | |
1145 | hstate.add_flag (TYPE_USER_ALIGN (t)); | |
1146 | hstate.add_flag (TYPE_READONLY (t)); | |
ee03e71d | 1147 | if (RECORD_OR_UNION_TYPE_P (t)) |
0170f33c | 1148 | { |
e8326772 AK |
1149 | hstate.add_flag (TYPE_TRANSPARENT_AGGR (t)); |
1150 | hstate.add_flag (TYPE_FINAL_P (t)); | |
0170f33c | 1151 | } |
ee03e71d | 1152 | else if (code == ARRAY_TYPE) |
e8326772 AK |
1153 | hstate.add_flag (TYPE_NONALIASED_COMPONENT (t)); |
1154 | hstate.commit_flag (); | |
1155 | hstate.add_int (TYPE_PRECISION (t)); | |
1156 | hstate.add_int (TYPE_ALIGN (t)); | |
ee03e71d RB |
1157 | } |
1158 | ||
1159 | if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) | |
e8326772 AK |
1160 | hstate.add (TRANSLATION_UNIT_LANGUAGE (t), |
1161 | strlen (TRANSLATION_UNIT_LANGUAGE (t))); | |
ee03e71d | 1162 | |
1b34e6e2 BS |
1163 | if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION) |
1164 | /* We don't stream these when passing things to a different target. */ | |
1165 | && !lto_stream_offload_p) | |
325fe981 | 1166 | hstate.add_wide_int (cl_target_option_hash (TREE_TARGET_OPTION (t))); |
ee03e71d RB |
1167 | |
1168 | if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION)) | |
ca9a04da | 1169 | hstate.add_wide_int (cl_optimization_hash (TREE_OPTIMIZATION (t))); |
ee03e71d RB |
1170 | |
1171 | if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER)) | |
e8326772 | 1172 | hstate.merge_hash (IDENTIFIER_HASH_VALUE (t)); |
ee03e71d RB |
1173 | |
1174 | if (CODE_CONTAINS_STRUCT (code, TS_STRING)) | |
e8326772 | 1175 | hstate.add (TREE_STRING_POINTER (t), TREE_STRING_LENGTH (t)); |
ee03e71d RB |
1176 | |
1177 | if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) | |
1178 | { | |
a4b0388b | 1179 | if (code != IDENTIFIER_NODE) |
ee03e71d RB |
1180 | visit (TREE_TYPE (t)); |
1181 | } | |
1182 | ||
1183 | if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) | |
1184 | for (unsigned i = 0; i < VECTOR_CST_NELTS (t); ++i) | |
1185 | visit (VECTOR_CST_ELT (t, i)); | |
1186 | ||
1187 | if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) | |
1188 | { | |
1189 | visit (TREE_REALPART (t)); | |
1190 | visit (TREE_IMAGPART (t)); | |
1191 | } | |
1192 | ||
1193 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) | |
1194 | { | |
1195 | /* Drop names that were created for anonymous entities. */ | |
1196 | if (DECL_NAME (t) | |
1197 | && TREE_CODE (DECL_NAME (t)) == IDENTIFIER_NODE | |
ee47f74e | 1198 | && anon_aggrname_p (DECL_NAME (t))) |
ee03e71d RB |
1199 | ; |
1200 | else | |
1201 | visit (DECL_NAME (t)); | |
1202 | if (DECL_FILE_SCOPE_P (t)) | |
1203 | ; | |
1204 | else | |
1205 | visit (DECL_CONTEXT (t)); | |
1206 | } | |
1207 | ||
1208 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
1209 | { | |
1210 | visit (DECL_SIZE (t)); | |
1211 | visit (DECL_SIZE_UNIT (t)); | |
1212 | visit (DECL_ATTRIBUTES (t)); | |
1213 | if ((code == VAR_DECL | |
1214 | || code == PARM_DECL) | |
1215 | && DECL_HAS_VALUE_EXPR_P (t)) | |
1216 | visit (DECL_VALUE_EXPR (t)); | |
1217 | if (code == VAR_DECL | |
1218 | && DECL_HAS_DEBUG_EXPR_P (t)) | |
1219 | visit (DECL_DEBUG_EXPR (t)); | |
1220 | /* ??? Hash DECL_INITIAL as streamed. Needs the output-block to | |
1221 | be able to call get_symbol_initial_value. */ | |
1222 | } | |
1223 | ||
1224 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) | |
1225 | { | |
815effe1 | 1226 | if (code == TYPE_DECL) |
ee03e71d | 1227 | visit (DECL_ORIGINAL_TYPE (t)); |
ee03e71d RB |
1228 | } |
1229 | ||
1230 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
1231 | { | |
1232 | if (DECL_ASSEMBLER_NAME_SET_P (t)) | |
1233 | visit (DECL_ASSEMBLER_NAME (t)); | |
ee03e71d RB |
1234 | } |
1235 | ||
1236 | if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) | |
1237 | { | |
1238 | visit (DECL_FIELD_OFFSET (t)); | |
1239 | visit (DECL_BIT_FIELD_TYPE (t)); | |
1240 | visit (DECL_BIT_FIELD_REPRESENTATIVE (t)); | |
1241 | visit (DECL_FIELD_BIT_OFFSET (t)); | |
1242 | visit (DECL_FCONTEXT (t)); | |
1243 | } | |
1244 | ||
1245 | if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
1246 | { | |
aaf8a23e | 1247 | visit (DECL_VINDEX (t)); |
ee03e71d | 1248 | visit (DECL_FUNCTION_PERSONALITY (t)); |
325fe981 | 1249 | visit (DECL_FUNCTION_SPECIFIC_TARGET (t)); |
ee03e71d RB |
1250 | visit (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (t)); |
1251 | } | |
1252 | ||
1253 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
1254 | { | |
1255 | visit (TYPE_SIZE (t)); | |
1256 | visit (TYPE_SIZE_UNIT (t)); | |
1257 | visit (TYPE_ATTRIBUTES (t)); | |
1258 | visit (TYPE_NAME (t)); | |
1259 | visit (TYPE_MAIN_VARIANT (t)); | |
1260 | if (TYPE_FILE_SCOPE_P (t)) | |
1261 | ; | |
1262 | else | |
1263 | visit (TYPE_CONTEXT (t)); | |
1264 | visit (TYPE_STUB_DECL (t)); | |
1265 | } | |
1266 | ||
1267 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) | |
1268 | { | |
1269 | if (code == ENUMERAL_TYPE) | |
1270 | visit (TYPE_VALUES (t)); | |
1271 | else if (code == ARRAY_TYPE) | |
1272 | visit (TYPE_DOMAIN (t)); | |
1273 | else if (RECORD_OR_UNION_TYPE_P (t)) | |
1274 | for (tree f = TYPE_FIELDS (t); f; f = TREE_CHAIN (f)) | |
1275 | visit (f); | |
1276 | else if (code == FUNCTION_TYPE | |
1277 | || code == METHOD_TYPE) | |
1278 | visit (TYPE_ARG_TYPES (t)); | |
1279 | if (!POINTER_TYPE_P (t)) | |
1280 | visit (TYPE_MINVAL (t)); | |
1281 | visit (TYPE_MAXVAL (t)); | |
1282 | if (RECORD_OR_UNION_TYPE_P (t)) | |
1283 | visit (TYPE_BINFO (t)); | |
1284 | } | |
1285 | ||
1286 | if (CODE_CONTAINS_STRUCT (code, TS_LIST)) | |
1287 | { | |
1288 | visit (TREE_PURPOSE (t)); | |
1289 | visit (TREE_VALUE (t)); | |
1290 | visit (TREE_CHAIN (t)); | |
1291 | } | |
1292 | ||
1293 | if (CODE_CONTAINS_STRUCT (code, TS_VEC)) | |
1294 | for (int i = 0; i < TREE_VEC_LENGTH (t); ++i) | |
1295 | visit (TREE_VEC_ELT (t, i)); | |
1296 | ||
1297 | if (CODE_CONTAINS_STRUCT (code, TS_EXP)) | |
1298 | { | |
e8326772 | 1299 | hstate.add_wide_int (TREE_OPERAND_LENGTH (t)); |
ee03e71d RB |
1300 | for (int i = 0; i < TREE_OPERAND_LENGTH (t); ++i) |
1301 | visit (TREE_OPERAND (t, i)); | |
1302 | } | |
1303 | ||
1304 | if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) | |
1305 | { | |
1306 | unsigned i; | |
1307 | tree b; | |
1308 | FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (t), i, b) | |
1309 | visit (b); | |
1310 | visit (BINFO_OFFSET (t)); | |
1311 | visit (BINFO_VTABLE (t)); | |
1312 | visit (BINFO_VPTR_FIELD (t)); | |
1313 | FOR_EACH_VEC_SAFE_ELT (BINFO_BASE_ACCESSES (t), i, b) | |
1314 | visit (b); | |
c01c111b JH |
1315 | /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX |
1316 | and BINFO_VPTR_INDEX; these are used by C++ FE only. */ | |
ee03e71d RB |
1317 | } |
1318 | ||
1319 | if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) | |
1320 | { | |
1321 | unsigned i; | |
1322 | tree index, value; | |
e8326772 | 1323 | hstate.add_wide_int (CONSTRUCTOR_NELTS (t)); |
ee03e71d RB |
1324 | FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t), i, index, value) |
1325 | { | |
1326 | visit (index); | |
1327 | visit (value); | |
1328 | } | |
1329 | } | |
1330 | ||
e06f9964 JJ |
1331 | if (code == OMP_CLAUSE) |
1332 | { | |
1333 | int i; | |
e8326772 | 1334 | HOST_WIDE_INT val; |
e06f9964 | 1335 | |
e8326772 | 1336 | hstate.add_wide_int (OMP_CLAUSE_CODE (t)); |
e06f9964 JJ |
1337 | switch (OMP_CLAUSE_CODE (t)) |
1338 | { | |
1339 | case OMP_CLAUSE_DEFAULT: | |
e8326772 | 1340 | val = OMP_CLAUSE_DEFAULT_KIND (t); |
e06f9964 JJ |
1341 | break; |
1342 | case OMP_CLAUSE_SCHEDULE: | |
e8326772 | 1343 | val = OMP_CLAUSE_SCHEDULE_KIND (t); |
e06f9964 JJ |
1344 | break; |
1345 | case OMP_CLAUSE_DEPEND: | |
e8326772 | 1346 | val = OMP_CLAUSE_DEPEND_KIND (t); |
e06f9964 JJ |
1347 | break; |
1348 | case OMP_CLAUSE_MAP: | |
e8326772 | 1349 | val = OMP_CLAUSE_MAP_KIND (t); |
e06f9964 JJ |
1350 | break; |
1351 | case OMP_CLAUSE_PROC_BIND: | |
e8326772 | 1352 | val = OMP_CLAUSE_PROC_BIND_KIND (t); |
e06f9964 JJ |
1353 | break; |
1354 | case OMP_CLAUSE_REDUCTION: | |
e8326772 | 1355 | val = OMP_CLAUSE_REDUCTION_CODE (t); |
e06f9964 JJ |
1356 | break; |
1357 | default: | |
e8326772 | 1358 | val = 0; |
e06f9964 JJ |
1359 | break; |
1360 | } | |
e8326772 | 1361 | hstate.add_wide_int (val); |
e06f9964 JJ |
1362 | for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (t)]; i++) |
1363 | visit (OMP_CLAUSE_OPERAND (t, i)); | |
1364 | visit (OMP_CLAUSE_CHAIN (t)); | |
1365 | } | |
1366 | ||
e8326772 | 1367 | return hstate.end (); |
ee03e71d RB |
1368 | |
1369 | #undef visit | |
1370 | } | |
1371 | ||
1372 | /* Compare two SCC entries by their hash value for qsorting them. */ | |
1373 | ||
a4b0388b JH |
1374 | int |
1375 | DFS::scc_entry_compare (const void *p1_, const void *p2_) | |
ee03e71d RB |
1376 | { |
1377 | const scc_entry *p1 = (const scc_entry *) p1_; | |
1378 | const scc_entry *p2 = (const scc_entry *) p2_; | |
1379 | if (p1->hash < p2->hash) | |
1380 | return -1; | |
1381 | else if (p1->hash > p2->hash) | |
1382 | return 1; | |
1383 | return 0; | |
1384 | } | |
1385 | ||
cec34ee5 EB |
1386 | /* Return a hash value for the SCC on the SCC stack from FIRST with SIZE. |
1387 | THIS_REF_P and REF_P are as passed to lto_output_tree for FIRST. */ | |
ee03e71d | 1388 | |
a4b0388b | 1389 | hashval_t |
cec34ee5 EB |
1390 | DFS::hash_scc (struct output_block *ob, unsigned first, unsigned size, |
1391 | bool ref_p, bool this_ref_p) | |
ee03e71d | 1392 | { |
a4b0388b JH |
1393 | unsigned int last_classes = 0, iterations = 0; |
1394 | ||
ee03e71d RB |
1395 | /* Compute hash values for the SCC members. */ |
1396 | for (unsigned i = 0; i < size; ++i) | |
0cf094c0 EB |
1397 | sccstack[first+i].hash |
1398 | = hash_tree (ob->writer_cache, NULL, sccstack[first+i].t); | |
ee03e71d RB |
1399 | |
1400 | if (size == 1) | |
1401 | return sccstack[first].hash; | |
1402 | ||
a4b0388b | 1403 | /* We aim to get unique hash for every tree within SCC and compute hash value |
0cf094c0 | 1404 | of the whole SCC by combining all values together in a stable (entry-point |
a4b0388b JH |
1405 | independent) order. This guarantees that the same SCC regions within |
1406 | different translation units will get the same hash values and therefore | |
1407 | will be merged at WPA time. | |
1408 | ||
0cf094c0 | 1409 | Often the hashes are already unique. In that case we compute the SCC hash |
a4b0388b JH |
1410 | by combining individual hash values in an increasing order. |
1411 | ||
0cf094c0 EB |
1412 | If there are duplicates, we seek at least one tree with unique hash (and |
1413 | pick one with minimal hash and this property). Then we obtain a stable | |
1414 | order by DFS walk starting from this unique tree and then use the index | |
a4b0388b JH |
1415 | within this order to make individual hash values unique. |
1416 | ||
1417 | If there is no tree with unique hash, we iteratively propagate the hash | |
1418 | values across the internal edges of SCC. This usually quickly leads | |
1419 | to unique hashes. Consider, for example, an SCC containing two pointers | |
0cf094c0 EB |
1420 | that are identical except for the types they point to and assume that |
1421 | these types are also part of the SCC. The propagation will add the | |
1422 | points-to type information into their hash values. */ | |
a4b0388b JH |
1423 | do |
1424 | { | |
0cf094c0 | 1425 | /* Sort the SCC so we can easily check for uniqueness. */ |
a4b0388b JH |
1426 | qsort (&sccstack[first], size, sizeof (scc_entry), scc_entry_compare); |
1427 | ||
1428 | unsigned int classes = 1; | |
1429 | int firstunique = -1; | |
1430 | ||
0cf094c0 EB |
1431 | /* Find the tree with lowest unique hash (if it exists) and compute |
1432 | the number of equivalence classes. */ | |
a4b0388b JH |
1433 | if (sccstack[first].hash != sccstack[first+1].hash) |
1434 | firstunique = 0; | |
1435 | for (unsigned i = 1; i < size; ++i) | |
1436 | if (sccstack[first+i-1].hash != sccstack[first+i].hash) | |
1437 | { | |
1438 | classes++; | |
1439 | if (firstunique == -1 | |
1440 | && (i == size - 1 | |
1441 | || sccstack[first+i+1].hash != sccstack[first+i].hash)) | |
1442 | firstunique = i; | |
1443 | } | |
1444 | ||
0cf094c0 | 1445 | /* If we found a tree with unique hash, stop the iteration. */ |
a4b0388b JH |
1446 | if (firstunique != -1 |
1447 | /* Also terminate if we run out of iterations or if the number of | |
1448 | equivalence classes is no longer increasing. | |
1449 | For example a cyclic list of trees that are all equivalent will | |
1450 | never have unique entry point; we however do not build such SCCs | |
1451 | in our IL. */ | |
1452 | || classes <= last_classes || iterations > 16) | |
1453 | { | |
1454 | hashval_t scc_hash; | |
1455 | ||
1456 | /* If some hashes are not unique (CLASSES != SIZE), use the DFS walk | |
0cf094c0 | 1457 | starting from FIRSTUNIQUE to obtain a stable order. */ |
a4b0388b JH |
1458 | if (classes != size && firstunique != -1) |
1459 | { | |
1460 | hash_map <tree, hashval_t> map(size*2); | |
1461 | ||
1462 | /* Store hash values into a map, so we can associate them with | |
0cf094c0 | 1463 | the reordered SCC. */ |
a4b0388b JH |
1464 | for (unsigned i = 0; i < size; ++i) |
1465 | map.put (sccstack[first+i].t, sccstack[first+i].hash); | |
1466 | ||
cec34ee5 EB |
1467 | DFS again (ob, sccstack[first+firstunique].t, ref_p, this_ref_p, |
1468 | true); | |
a4b0388b JH |
1469 | gcc_assert (again.sccstack.length () == size); |
1470 | ||
1471 | memcpy (sccstack.address () + first, | |
1472 | again.sccstack.address (), | |
1473 | sizeof (scc_entry) * size); | |
1474 | ||
1475 | /* Update hash values of individual members by hashing in the | |
1476 | index within the stable order. This ensures uniqueness. | |
0cf094c0 EB |
1477 | Also compute the SCC hash by mixing in all hash values in |
1478 | the stable order we obtained. */ | |
a4b0388b JH |
1479 | sccstack[first].hash = *map.get (sccstack[first].t); |
1480 | scc_hash = sccstack[first].hash; | |
1481 | for (unsigned i = 1; i < size; ++i) | |
1482 | { | |
1483 | sccstack[first+i].hash | |
1484 | = iterative_hash_hashval_t (i, | |
1485 | *map.get (sccstack[first+i].t)); | |
0cf094c0 EB |
1486 | scc_hash |
1487 | = iterative_hash_hashval_t (scc_hash, | |
1488 | sccstack[first+i].hash); | |
a4b0388b JH |
1489 | } |
1490 | } | |
0cf094c0 EB |
1491 | /* If we got a unique hash value for each tree, then sort already |
1492 | ensured entry-point independent order. Only compute the final | |
1493 | SCC hash. | |
a4b0388b JH |
1494 | |
1495 | If we failed to find the unique entry point, we go by the same | |
0cf094c0 | 1496 | route. We will eventually introduce unwanted hash conflicts. */ |
a4b0388b JH |
1497 | else |
1498 | { | |
1499 | scc_hash = sccstack[first].hash; | |
1500 | for (unsigned i = 1; i < size; ++i) | |
0cf094c0 EB |
1501 | scc_hash |
1502 | = iterative_hash_hashval_t (scc_hash, sccstack[first+i].hash); | |
1503 | ||
1504 | /* We cannot 100% guarantee that the hash won't conflict so as | |
1505 | to make it impossible to find a unique hash. This however | |
1506 | should be an extremely rare case. ICE for now so possible | |
1507 | issues are found and evaluated. */ | |
a4b0388b JH |
1508 | gcc_checking_assert (classes == size); |
1509 | } | |
1510 | ||
0cf094c0 EB |
1511 | /* To avoid conflicts across SCCs, iteratively hash the whole SCC |
1512 | hash into the hash of each element. */ | |
a4b0388b JH |
1513 | for (unsigned i = 0; i < size; ++i) |
1514 | sccstack[first+i].hash | |
1515 | = iterative_hash_hashval_t (sccstack[first+i].hash, scc_hash); | |
1516 | return scc_hash; | |
1517 | } | |
1518 | ||
1519 | last_classes = classes; | |
1520 | iterations++; | |
1521 | ||
1522 | /* We failed to identify the entry point; propagate hash values across | |
1523 | the edges. */ | |
0cf094c0 EB |
1524 | hash_map <tree, hashval_t> map(size*2); |
1525 | ||
1526 | for (unsigned i = 0; i < size; ++i) | |
1527 | map.put (sccstack[first+i].t, sccstack[first+i].hash); | |
1528 | ||
1529 | for (unsigned i = 0; i < size; i++) | |
1530 | sccstack[first+i].hash | |
1531 | = hash_tree (ob->writer_cache, &map, sccstack[first+i].t); | |
a4b0388b JH |
1532 | } |
1533 | while (true); | |
ee03e71d RB |
1534 | } |
1535 | ||
1536 | /* DFS walk EXPR and stream SCCs of tree bodies if they are not | |
1537 | already in the streamer cache. Main routine called for | |
1538 | each visit of EXPR. */ | |
1539 | ||
a4b0388b JH |
1540 | void |
1541 | DFS::DFS_write_tree (struct output_block *ob, sccs *from_state, | |
bbf043c2 | 1542 | tree expr, bool ref_p, bool this_ref_p) |
ee03e71d | 1543 | { |
ee03e71d RB |
1544 | /* Handle special cases. */ |
1545 | if (expr == NULL_TREE) | |
1546 | return; | |
1547 | ||
1548 | /* Do not DFS walk into indexable trees. */ | |
1549 | if (this_ref_p && tree_is_indexable (expr)) | |
1550 | return; | |
1551 | ||
1552 | /* Check if we already streamed EXPR. */ | |
bbf043c2 | 1553 | if (streamer_tree_cache_lookup (ob->writer_cache, expr, NULL)) |
ee03e71d RB |
1554 | return; |
1555 | ||
bbf043c2 JJ |
1556 | worklist w; |
1557 | w.expr = expr; | |
1558 | w.from_state = from_state; | |
1559 | w.cstate = NULL; | |
1560 | w.ref_p = ref_p; | |
1561 | w.this_ref_p = this_ref_p; | |
1562 | worklist_vec.safe_push (w); | |
ee03e71d RB |
1563 | } |
1564 | ||
b9393656 | 1565 | |
cec34ee5 EB |
1566 | /* Emit the physical representation of tree node EXPR to output block OB. |
1567 | If THIS_REF_P is true, the leaves of EXPR are emitted as references via | |
1568 | lto_output_tree_ref. REF_P is used for streaming siblings of EXPR. */ | |
b9393656 DN |
1569 | |
1570 | void | |
7e54c608 RG |
1571 | lto_output_tree (struct output_block *ob, tree expr, |
1572 | bool ref_p, bool this_ref_p) | |
b9393656 DN |
1573 | { |
1574 | unsigned ix; | |
1575 | bool existed_p; | |
1576 | ||
1577 | if (expr == NULL_TREE) | |
1578 | { | |
412288f1 | 1579 | streamer_write_record_start (ob, LTO_null); |
b9393656 DN |
1580 | return; |
1581 | } | |
1582 | ||
7e54c608 | 1583 | if (this_ref_p && tree_is_indexable (expr)) |
b9393656 DN |
1584 | { |
1585 | lto_output_tree_ref (ob, expr); | |
1586 | return; | |
1587 | } | |
1588 | ||
ee03e71d | 1589 | existed_p = streamer_tree_cache_lookup (ob->writer_cache, expr, &ix); |
b9393656 DN |
1590 | if (existed_p) |
1591 | { | |
1592 | /* If a node has already been streamed out, make sure that | |
1593 | we don't write it more than once. Otherwise, the reader | |
1594 | will instantiate two different nodes for the same object. */ | |
412288f1 DN |
1595 | streamer_write_record_start (ob, LTO_tree_pickle_reference); |
1596 | streamer_write_uhwi (ob, ix); | |
1597 | streamer_write_enum (ob->main_stream, LTO_tags, LTO_NUM_TAGS, | |
1598 | lto_tree_code_to_tag (TREE_CODE (expr))); | |
ee03e71d | 1599 | lto_stats.num_pickle_refs_output++; |
b9393656 DN |
1600 | } |
1601 | else | |
1602 | { | |
ee03e71d RB |
1603 | /* This is the first time we see EXPR, write all reachable |
1604 | trees to OB. */ | |
1605 | static bool in_dfs_walk; | |
1606 | ||
1607 | /* Protect against recursion which means disconnect between | |
1608 | what tree edges we walk in the DFS walk and what edges | |
1609 | we stream out. */ | |
1610 | gcc_assert (!in_dfs_walk); | |
1611 | ||
1612 | /* Start the DFS walk. */ | |
1613 | /* Save ob state ... */ | |
1614 | /* let's see ... */ | |
1615 | in_dfs_walk = true; | |
a4b0388b | 1616 | DFS (ob, expr, ref_p, this_ref_p, false); |
ee03e71d RB |
1617 | in_dfs_walk = false; |
1618 | ||
1619 | /* Finally append a reference to the tree we were writing. | |
1620 | ??? If expr ended up as a singleton we could have | |
1621 | inlined it here and avoid outputting a reference. */ | |
1622 | existed_p = streamer_tree_cache_lookup (ob->writer_cache, expr, &ix); | |
1623 | gcc_assert (existed_p); | |
1624 | streamer_write_record_start (ob, LTO_tree_pickle_reference); | |
1625 | streamer_write_uhwi (ob, ix); | |
1626 | streamer_write_enum (ob->main_stream, LTO_tags, LTO_NUM_TAGS, | |
1627 | lto_tree_code_to_tag (TREE_CODE (expr))); | |
1628 | lto_stats.num_pickle_refs_output++; | |
d7f09764 DN |
1629 | } |
1630 | } | |
1631 | ||
1632 | ||
1633 | /* Output to OB a list of try/catch handlers starting with FIRST. */ | |
1634 | ||
1635 | static void | |
1636 | output_eh_try_list (struct output_block *ob, eh_catch first) | |
1637 | { | |
1638 | eh_catch n; | |
1639 | ||
1640 | for (n = first; n; n = n->next_catch) | |
1641 | { | |
412288f1 | 1642 | streamer_write_record_start (ob, LTO_eh_catch); |
b9393656 DN |
1643 | stream_write_tree (ob, n->type_list, true); |
1644 | stream_write_tree (ob, n->filter_list, true); | |
1645 | stream_write_tree (ob, n->label, true); | |
d7f09764 DN |
1646 | } |
1647 | ||
412288f1 | 1648 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1649 | } |
1650 | ||
1651 | ||
1652 | /* Output EH region R in function FN to OB. CURR_RN is the slot index | |
1653 | that is being emitted in FN->EH->REGION_ARRAY. This is used to | |
1654 | detect EH region sharing. */ | |
1655 | ||
1656 | static void | |
1657 | output_eh_region (struct output_block *ob, eh_region r) | |
1658 | { | |
1659 | enum LTO_tags tag; | |
1660 | ||
1661 | if (r == NULL) | |
1662 | { | |
412288f1 | 1663 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1664 | return; |
1665 | } | |
1666 | ||
1667 | if (r->type == ERT_CLEANUP) | |
1668 | tag = LTO_ert_cleanup; | |
1669 | else if (r->type == ERT_TRY) | |
1670 | tag = LTO_ert_try; | |
1671 | else if (r->type == ERT_ALLOWED_EXCEPTIONS) | |
1672 | tag = LTO_ert_allowed_exceptions; | |
1673 | else if (r->type == ERT_MUST_NOT_THROW) | |
1674 | tag = LTO_ert_must_not_throw; | |
1675 | else | |
1676 | gcc_unreachable (); | |
1677 | ||
412288f1 DN |
1678 | streamer_write_record_start (ob, tag); |
1679 | streamer_write_hwi (ob, r->index); | |
d7f09764 DN |
1680 | |
1681 | if (r->outer) | |
412288f1 | 1682 | streamer_write_hwi (ob, r->outer->index); |
d7f09764 | 1683 | else |
412288f1 | 1684 | streamer_write_zero (ob); |
d7f09764 DN |
1685 | |
1686 | if (r->inner) | |
412288f1 | 1687 | streamer_write_hwi (ob, r->inner->index); |
d7f09764 | 1688 | else |
412288f1 | 1689 | streamer_write_zero (ob); |
d7f09764 DN |
1690 | |
1691 | if (r->next_peer) | |
412288f1 | 1692 | streamer_write_hwi (ob, r->next_peer->index); |
d7f09764 | 1693 | else |
412288f1 | 1694 | streamer_write_zero (ob); |
d7f09764 DN |
1695 | |
1696 | if (r->type == ERT_TRY) | |
1697 | { | |
1698 | output_eh_try_list (ob, r->u.eh_try.first_catch); | |
1699 | } | |
1700 | else if (r->type == ERT_ALLOWED_EXCEPTIONS) | |
1701 | { | |
b9393656 DN |
1702 | stream_write_tree (ob, r->u.allowed.type_list, true); |
1703 | stream_write_tree (ob, r->u.allowed.label, true); | |
412288f1 | 1704 | streamer_write_uhwi (ob, r->u.allowed.filter); |
d7f09764 DN |
1705 | } |
1706 | else if (r->type == ERT_MUST_NOT_THROW) | |
1707 | { | |
b9393656 | 1708 | stream_write_tree (ob, r->u.must_not_throw.failure_decl, true); |
7cb7d208 RB |
1709 | bitpack_d bp = bitpack_create (ob->main_stream); |
1710 | stream_output_location (ob, &bp, r->u.must_not_throw.failure_loc); | |
1711 | streamer_write_bitpack (&bp); | |
d7f09764 DN |
1712 | } |
1713 | ||
1714 | if (r->landing_pads) | |
412288f1 | 1715 | streamer_write_hwi (ob, r->landing_pads->index); |
d7f09764 | 1716 | else |
412288f1 | 1717 | streamer_write_zero (ob); |
d7f09764 DN |
1718 | } |
1719 | ||
1720 | ||
1721 | /* Output landing pad LP to OB. */ | |
1722 | ||
1723 | static void | |
1724 | output_eh_lp (struct output_block *ob, eh_landing_pad lp) | |
1725 | { | |
1726 | if (lp == NULL) | |
1727 | { | |
412288f1 | 1728 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1729 | return; |
1730 | } | |
1731 | ||
412288f1 DN |
1732 | streamer_write_record_start (ob, LTO_eh_landing_pad); |
1733 | streamer_write_hwi (ob, lp->index); | |
d7f09764 | 1734 | if (lp->next_lp) |
412288f1 | 1735 | streamer_write_hwi (ob, lp->next_lp->index); |
d7f09764 | 1736 | else |
412288f1 | 1737 | streamer_write_zero (ob); |
d7f09764 DN |
1738 | |
1739 | if (lp->region) | |
412288f1 | 1740 | streamer_write_hwi (ob, lp->region->index); |
d7f09764 | 1741 | else |
412288f1 | 1742 | streamer_write_zero (ob); |
d7f09764 | 1743 | |
b9393656 | 1744 | stream_write_tree (ob, lp->post_landing_pad, true); |
d7f09764 DN |
1745 | } |
1746 | ||
1747 | ||
1748 | /* Output the existing eh_table to OB. */ | |
1749 | ||
1750 | static void | |
1751 | output_eh_regions (struct output_block *ob, struct function *fn) | |
1752 | { | |
1753 | if (fn->eh && fn->eh->region_tree) | |
1754 | { | |
1755 | unsigned i; | |
1756 | eh_region eh; | |
1757 | eh_landing_pad lp; | |
1758 | tree ttype; | |
1759 | ||
412288f1 | 1760 | streamer_write_record_start (ob, LTO_eh_table); |
d7f09764 DN |
1761 | |
1762 | /* Emit the index of the root of the EH region tree. */ | |
412288f1 | 1763 | streamer_write_hwi (ob, fn->eh->region_tree->index); |
d7f09764 DN |
1764 | |
1765 | /* Emit all the EH regions in the region array. */ | |
9771b263 DN |
1766 | streamer_write_hwi (ob, vec_safe_length (fn->eh->region_array)); |
1767 | FOR_EACH_VEC_SAFE_ELT (fn->eh->region_array, i, eh) | |
d7f09764 DN |
1768 | output_eh_region (ob, eh); |
1769 | ||
1770 | /* Emit all landing pads. */ | |
9771b263 DN |
1771 | streamer_write_hwi (ob, vec_safe_length (fn->eh->lp_array)); |
1772 | FOR_EACH_VEC_SAFE_ELT (fn->eh->lp_array, i, lp) | |
d7f09764 DN |
1773 | output_eh_lp (ob, lp); |
1774 | ||
1775 | /* Emit all the runtime type data. */ | |
9771b263 DN |
1776 | streamer_write_hwi (ob, vec_safe_length (fn->eh->ttype_data)); |
1777 | FOR_EACH_VEC_SAFE_ELT (fn->eh->ttype_data, i, ttype) | |
b9393656 | 1778 | stream_write_tree (ob, ttype, true); |
d7f09764 DN |
1779 | |
1780 | /* Emit the table of action chains. */ | |
1781 | if (targetm.arm_eabi_unwinder) | |
1782 | { | |
1783 | tree t; | |
9771b263 DN |
1784 | streamer_write_hwi (ob, vec_safe_length (fn->eh->ehspec_data.arm_eabi)); |
1785 | FOR_EACH_VEC_SAFE_ELT (fn->eh->ehspec_data.arm_eabi, i, t) | |
b9393656 | 1786 | stream_write_tree (ob, t, true); |
d7f09764 DN |
1787 | } |
1788 | else | |
1789 | { | |
1790 | uchar c; | |
9771b263 DN |
1791 | streamer_write_hwi (ob, vec_safe_length (fn->eh->ehspec_data.other)); |
1792 | FOR_EACH_VEC_SAFE_ELT (fn->eh->ehspec_data.other, i, c) | |
412288f1 | 1793 | streamer_write_char_stream (ob->main_stream, c); |
d7f09764 DN |
1794 | } |
1795 | } | |
1796 | ||
07233947 DN |
1797 | /* The LTO_null either terminates the record or indicates that there |
1798 | are no eh_records at all. */ | |
412288f1 | 1799 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1800 | } |
1801 | ||
1802 | ||
1803 | /* Output all of the active ssa names to the ssa_names stream. */ | |
1804 | ||
1805 | static void | |
1806 | output_ssa_names (struct output_block *ob, struct function *fn) | |
1807 | { | |
1808 | unsigned int i, len; | |
1809 | ||
9771b263 | 1810 | len = vec_safe_length (SSANAMES (fn)); |
412288f1 | 1811 | streamer_write_uhwi (ob, len); |
d7f09764 DN |
1812 | |
1813 | for (i = 1; i < len; i++) | |
1814 | { | |
9771b263 | 1815 | tree ptr = (*SSANAMES (fn))[i]; |
d7f09764 DN |
1816 | |
1817 | if (ptr == NULL_TREE | |
1818 | || SSA_NAME_IN_FREE_LIST (ptr) | |
ea057359 | 1819 | || virtual_operand_p (ptr)) |
d7f09764 DN |
1820 | continue; |
1821 | ||
412288f1 DN |
1822 | streamer_write_uhwi (ob, i); |
1823 | streamer_write_char_stream (ob->main_stream, | |
1824 | SSA_NAME_IS_DEFAULT_DEF (ptr)); | |
70b5e7dc RG |
1825 | if (SSA_NAME_VAR (ptr)) |
1826 | stream_write_tree (ob, SSA_NAME_VAR (ptr), true); | |
1827 | else | |
1828 | /* ??? This drops SSA_NAME_IDENTIFIER on the floor. */ | |
1829 | stream_write_tree (ob, TREE_TYPE (ptr), true); | |
d7f09764 DN |
1830 | } |
1831 | ||
412288f1 | 1832 | streamer_write_zero (ob); |
d7f09764 DN |
1833 | } |
1834 | ||
1835 | ||
807e902e KZ |
1836 | /* Output a wide-int. */ |
1837 | ||
1838 | static void | |
1839 | streamer_write_wi (struct output_block *ob, | |
1840 | const widest_int &w) | |
1841 | { | |
1842 | int len = w.get_len (); | |
1843 | ||
1844 | streamer_write_uhwi (ob, w.get_precision ()); | |
1845 | streamer_write_uhwi (ob, len); | |
1846 | for (int i = 0; i < len; i++) | |
1847 | streamer_write_hwi (ob, w.elt (i)); | |
1848 | } | |
1849 | ||
1850 | ||
d7f09764 DN |
1851 | /* Output the cfg. */ |
1852 | ||
1853 | static void | |
1854 | output_cfg (struct output_block *ob, struct function *fn) | |
1855 | { | |
1856 | struct lto_output_stream *tmp_stream = ob->main_stream; | |
1857 | basic_block bb; | |
1858 | ||
1859 | ob->main_stream = ob->cfg_stream; | |
1860 | ||
412288f1 | 1861 | streamer_write_enum (ob->main_stream, profile_status_d, PROFILE_LAST, |
ea19eb9f | 1862 | profile_status_for_fn (fn)); |
d7f09764 DN |
1863 | |
1864 | /* Output the number of the highest basic block. */ | |
3986e690 | 1865 | streamer_write_uhwi (ob, last_basic_block_for_fn (fn)); |
d7f09764 DN |
1866 | |
1867 | FOR_ALL_BB_FN (bb, fn) | |
1868 | { | |
1869 | edge_iterator ei; | |
1870 | edge e; | |
1871 | ||
412288f1 | 1872 | streamer_write_hwi (ob, bb->index); |
d7f09764 DN |
1873 | |
1874 | /* Output the successors and the edge flags. */ | |
412288f1 | 1875 | streamer_write_uhwi (ob, EDGE_COUNT (bb->succs)); |
d7f09764 DN |
1876 | FOR_EACH_EDGE (e, ei, bb->succs) |
1877 | { | |
412288f1 DN |
1878 | streamer_write_uhwi (ob, e->dest->index); |
1879 | streamer_write_hwi (ob, e->probability); | |
89ab31c1 | 1880 | streamer_write_gcov_count (ob, e->count); |
412288f1 | 1881 | streamer_write_uhwi (ob, e->flags); |
d7f09764 DN |
1882 | } |
1883 | } | |
1884 | ||
412288f1 | 1885 | streamer_write_hwi (ob, -1); |
d7f09764 | 1886 | |
fefa31b5 | 1887 | bb = ENTRY_BLOCK_PTR_FOR_FN (cfun); |
d7f09764 DN |
1888 | while (bb->next_bb) |
1889 | { | |
412288f1 | 1890 | streamer_write_hwi (ob, bb->next_bb->index); |
d7f09764 DN |
1891 | bb = bb->next_bb; |
1892 | } | |
1893 | ||
412288f1 | 1894 | streamer_write_hwi (ob, -1); |
d7f09764 | 1895 | |
dd366ec3 RB |
1896 | /* ??? The cfgloop interface is tied to cfun. */ |
1897 | gcc_assert (cfun == fn); | |
1898 | ||
1899 | /* Output the number of loops. */ | |
0fc822d0 | 1900 | streamer_write_uhwi (ob, number_of_loops (fn)); |
dd366ec3 RB |
1901 | |
1902 | /* Output each loop, skipping the tree root which has number zero. */ | |
0fc822d0 | 1903 | for (unsigned i = 1; i < number_of_loops (fn); ++i) |
dd366ec3 | 1904 | { |
0fc822d0 | 1905 | struct loop *loop = get_loop (fn, i); |
dd366ec3 RB |
1906 | |
1907 | /* Write the index of the loop header. That's enough to rebuild | |
1908 | the loop tree on the reader side. Stream -1 for an unused | |
1909 | loop entry. */ | |
1910 | if (!loop) | |
1911 | { | |
1912 | streamer_write_hwi (ob, -1); | |
1913 | continue; | |
1914 | } | |
1915 | else | |
1916 | streamer_write_hwi (ob, loop->header->index); | |
1917 | ||
1918 | /* Write everything copy_loop_info copies. */ | |
1919 | streamer_write_enum (ob->main_stream, | |
1920 | loop_estimation, EST_LAST, loop->estimate_state); | |
1921 | streamer_write_hwi (ob, loop->any_upper_bound); | |
1922 | if (loop->any_upper_bound) | |
807e902e | 1923 | streamer_write_wi (ob, loop->nb_iterations_upper_bound); |
dd366ec3 RB |
1924 | streamer_write_hwi (ob, loop->any_estimate); |
1925 | if (loop->any_estimate) | |
807e902e | 1926 | streamer_write_wi (ob, loop->nb_iterations_estimate); |
e9287a41 RB |
1927 | |
1928 | /* Write OMP SIMD related info. */ | |
1929 | streamer_write_hwi (ob, loop->safelen); | |
718c4601 | 1930 | streamer_write_hwi (ob, loop->dont_vectorize); |
b15b5979 | 1931 | streamer_write_hwi (ob, loop->force_vectorize); |
e9287a41 | 1932 | stream_write_tree (ob, loop->simduid, true); |
dd366ec3 RB |
1933 | } |
1934 | ||
d7f09764 DN |
1935 | ob->main_stream = tmp_stream; |
1936 | } | |
1937 | ||
1938 | ||
d7f09764 DN |
1939 | /* Create the header in the file using OB. If the section type is for |
1940 | a function, set FN to the decl for that function. */ | |
1941 | ||
fb3f88cc | 1942 | void |
d7f09764 DN |
1943 | produce_asm (struct output_block *ob, tree fn) |
1944 | { | |
1945 | enum lto_section_type section_type = ob->section_type; | |
1946 | struct lto_function_header header; | |
1947 | char *section_name; | |
d7f09764 DN |
1948 | |
1949 | if (section_type == LTO_section_function_body) | |
1950 | { | |
1951 | const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn)); | |
73ce4d1e | 1952 | section_name = lto_get_section_name (section_type, name, NULL); |
d7f09764 DN |
1953 | } |
1954 | else | |
73ce4d1e | 1955 | section_name = lto_get_section_name (section_type, NULL, NULL); |
d7f09764 DN |
1956 | |
1957 | lto_begin_section (section_name, !flag_wpa); | |
1958 | free (section_name); | |
1959 | ||
1960 | /* The entire header is stream computed here. */ | |
1961 | memset (&header, 0, sizeof (struct lto_function_header)); | |
b8698a0f | 1962 | |
d7f09764 | 1963 | /* Write the header. */ |
207c68cd RB |
1964 | header.major_version = LTO_major_version; |
1965 | header.minor_version = LTO_minor_version; | |
b8698a0f | 1966 | |
d7f09764 DN |
1967 | if (section_type == LTO_section_function_body) |
1968 | header.cfg_size = ob->cfg_stream->total_size; | |
1969 | header.main_size = ob->main_stream->total_size; | |
1970 | header.string_size = ob->string_stream->total_size; | |
f6bcdb5e | 1971 | lto_write_data (&header, sizeof header); |
d7f09764 DN |
1972 | |
1973 | /* Put all of the gimple and the string table out the asm file as a | |
1974 | block of text. */ | |
1975 | if (section_type == LTO_section_function_body) | |
1976 | lto_write_stream (ob->cfg_stream); | |
1977 | lto_write_stream (ob->main_stream); | |
1978 | lto_write_stream (ob->string_stream); | |
1979 | ||
1980 | lto_end_section (); | |
1981 | } | |
1982 | ||
1983 | ||
35f5b1c1 | 1984 | /* Output the base body of struct function FN using output block OB. */ |
d7f09764 DN |
1985 | |
1986 | static void | |
35f5b1c1 | 1987 | output_struct_function_base (struct output_block *ob, struct function *fn) |
d7f09764 | 1988 | { |
2465dcc2 | 1989 | struct bitpack_d bp; |
c021f10b NF |
1990 | unsigned i; |
1991 | tree t; | |
d7f09764 | 1992 | |
35f5b1c1 LC |
1993 | /* Output the static chain and non-local goto save area. */ |
1994 | stream_write_tree (ob, fn->static_chain_decl, true); | |
1995 | stream_write_tree (ob, fn->nonlocal_goto_save_area, true); | |
d7f09764 | 1996 | |
35f5b1c1 | 1997 | /* Output all the local variables in the function. */ |
9771b263 DN |
1998 | streamer_write_hwi (ob, vec_safe_length (fn->local_decls)); |
1999 | FOR_EACH_VEC_SAFE_ELT (fn->local_decls, i, t) | |
35f5b1c1 | 2000 | stream_write_tree (ob, t, true); |
d7f09764 | 2001 | |
dd366ec3 RB |
2002 | /* Output current IL state of the function. */ |
2003 | streamer_write_uhwi (ob, fn->curr_properties); | |
d7f09764 DN |
2004 | |
2005 | /* Write all the attributes for FN. */ | |
2465dcc2 RG |
2006 | bp = bitpack_create (ob->main_stream); |
2007 | bp_pack_value (&bp, fn->is_thunk, 1); | |
2008 | bp_pack_value (&bp, fn->has_local_explicit_reg_vars, 1); | |
2465dcc2 RG |
2009 | bp_pack_value (&bp, fn->returns_pcc_struct, 1); |
2010 | bp_pack_value (&bp, fn->returns_struct, 1); | |
2011 | bp_pack_value (&bp, fn->can_throw_non_call_exceptions, 1); | |
2da02156 | 2012 | bp_pack_value (&bp, fn->can_delete_dead_exceptions, 1); |
2465dcc2 RG |
2013 | bp_pack_value (&bp, fn->always_inline_functions_inlined, 1); |
2014 | bp_pack_value (&bp, fn->after_inlining, 1); | |
2465dcc2 RG |
2015 | bp_pack_value (&bp, fn->stdarg, 1); |
2016 | bp_pack_value (&bp, fn->has_nonlocal_label, 1); | |
aa43616c | 2017 | bp_pack_value (&bp, fn->has_forced_label_in_static, 1); |
2465dcc2 RG |
2018 | bp_pack_value (&bp, fn->calls_alloca, 1); |
2019 | bp_pack_value (&bp, fn->calls_setjmp, 1); | |
b15b5979 | 2020 | bp_pack_value (&bp, fn->has_force_vectorize_loops, 1); |
e9287a41 | 2021 | bp_pack_value (&bp, fn->has_simduid_loops, 1); |
2465dcc2 RG |
2022 | bp_pack_value (&bp, fn->va_list_fpr_size, 8); |
2023 | bp_pack_value (&bp, fn->va_list_gpr_size, 8); | |
743c1134 | 2024 | bp_pack_value (&bp, fn->last_clique, sizeof (short) * 8); |
7cb7d208 RB |
2025 | |
2026 | /* Output the function start and end loci. */ | |
2027 | stream_output_location (ob, &bp, fn->function_start_locus); | |
2028 | stream_output_location (ob, &bp, fn->function_end_locus); | |
2029 | ||
412288f1 | 2030 | streamer_write_bitpack (&bp); |
35f5b1c1 | 2031 | } |
d7f09764 | 2032 | |
ac364a48 | 2033 | |
35f5b1c1 | 2034 | /* Output the body of function NODE->DECL. */ |
688a482d | 2035 | |
35f5b1c1 LC |
2036 | static void |
2037 | output_function (struct cgraph_node *node) | |
2038 | { | |
2039 | tree function; | |
2040 | struct function *fn; | |
2041 | basic_block bb; | |
2042 | struct output_block *ob; | |
d7f09764 | 2043 | |
67348ccc | 2044 | function = node->decl; |
35f5b1c1 LC |
2045 | fn = DECL_STRUCT_FUNCTION (function); |
2046 | ob = create_output_block (LTO_section_function_body); | |
2047 | ||
2048 | clear_line_info (ob); | |
0b83e688 | 2049 | ob->symbol = node; |
35f5b1c1 LC |
2050 | |
2051 | gcc_assert (current_function_decl == NULL_TREE && cfun == NULL); | |
2052 | ||
2053 | /* Set current_function_decl and cfun. */ | |
35f5b1c1 LC |
2054 | push_cfun (fn); |
2055 | ||
2056 | /* Make string 0 be a NULL string. */ | |
2057 | streamer_write_char_stream (ob->string_stream, 0); | |
2058 | ||
2059 | streamer_write_record_start (ob, LTO_function); | |
2060 | ||
815effe1 JH |
2061 | /* Output decls for parameters and args. */ |
2062 | stream_write_tree (ob, DECL_RESULT (function), true); | |
2063 | streamer_write_chain (ob, DECL_ARGUMENTS (function), true); | |
d7f09764 DN |
2064 | |
2065 | /* Output DECL_INITIAL for the function, which contains the tree of | |
2066 | lexical scopes. */ | |
b9393656 | 2067 | stream_write_tree (ob, DECL_INITIAL (function), true); |
d7f09764 | 2068 | |
815effe1 JH |
2069 | /* We also stream abstract functions where we stream only stuff needed for |
2070 | debug info. */ | |
2071 | if (gimple_has_body_p (function)) | |
2072 | { | |
2073 | streamer_write_uhwi (ob, 1); | |
2074 | output_struct_function_base (ob, fn); | |
2075 | ||
2076 | /* Output all the SSA names used in the function. */ | |
2077 | output_ssa_names (ob, fn); | |
2078 | ||
2079 | /* Output any exception handling regions. */ | |
2080 | output_eh_regions (ob, fn); | |
2081 | ||
2082 | ||
2083 | /* We will renumber the statements. The code that does this uses | |
2084 | the same ordering that we use for serializing them so we can use | |
2085 | the same code on the other end and not have to write out the | |
2086 | statement numbers. We do not assign UIDs to PHIs here because | |
2087 | virtual PHIs get re-computed on-the-fly which would make numbers | |
2088 | inconsistent. */ | |
2089 | set_gimple_stmt_max_uid (cfun, 0); | |
04a90bec | 2090 | FOR_ALL_BB_FN (bb, cfun) |
8f984534 | 2091 | { |
538dd0b7 DM |
2092 | for (gphi_iterator gsi = gsi_start_phis (bb); !gsi_end_p (gsi); |
2093 | gsi_next (&gsi)) | |
aa1e10cc | 2094 | { |
538dd0b7 | 2095 | gphi *stmt = gsi.phi (); |
aa1e10cc JH |
2096 | |
2097 | /* Virtual PHIs are not going to be streamed. */ | |
2098 | if (!virtual_operand_p (gimple_phi_result (stmt))) | |
2099 | gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); | |
2100 | } | |
538dd0b7 DM |
2101 | for (gimple_stmt_iterator gsi = gsi_start_bb (bb); !gsi_end_p (gsi); |
2102 | gsi_next (&gsi)) | |
815effe1 | 2103 | { |
355fe088 | 2104 | gimple *stmt = gsi_stmt (gsi); |
815effe1 JH |
2105 | gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); |
2106 | } | |
8f984534 | 2107 | } |
aa1e10cc JH |
2108 | /* To avoid keeping duplicate gimple IDs in the statements, renumber |
2109 | virtual phis now. */ | |
04a90bec | 2110 | FOR_ALL_BB_FN (bb, cfun) |
aa1e10cc | 2111 | { |
538dd0b7 DM |
2112 | for (gphi_iterator gsi = gsi_start_phis (bb); !gsi_end_p (gsi); |
2113 | gsi_next (&gsi)) | |
aa1e10cc | 2114 | { |
538dd0b7 | 2115 | gphi *stmt = gsi.phi (); |
aa1e10cc JH |
2116 | if (virtual_operand_p (gimple_phi_result (stmt))) |
2117 | gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); | |
2118 | } | |
2119 | } | |
d7f09764 | 2120 | |
815effe1 JH |
2121 | /* Output the code for the function. */ |
2122 | FOR_ALL_BB_FN (bb, fn) | |
2123 | output_bb (ob, bb, fn); | |
d7f09764 | 2124 | |
815effe1 JH |
2125 | /* The terminator for this function. */ |
2126 | streamer_write_record_start (ob, LTO_null); | |
d7f09764 | 2127 | |
815effe1 JH |
2128 | output_cfg (ob, fn); |
2129 | ||
2130 | pop_cfun (); | |
2131 | } | |
2132 | else | |
2133 | streamer_write_uhwi (ob, 0); | |
d7f09764 DN |
2134 | |
2135 | /* Create a section to hold the pickled output of this function. */ | |
2136 | produce_asm (ob, function); | |
2137 | ||
2138 | destroy_output_block (ob); | |
d7f09764 DN |
2139 | } |
2140 | ||
0b83e688 JH |
2141 | /* Output the body of function NODE->DECL. */ |
2142 | ||
2143 | static void | |
2144 | output_constructor (struct varpool_node *node) | |
2145 | { | |
2146 | tree var = node->decl; | |
2147 | struct output_block *ob; | |
2148 | ||
2149 | ob = create_output_block (LTO_section_function_body); | |
2150 | ||
2151 | clear_line_info (ob); | |
2152 | ob->symbol = node; | |
2153 | ||
2154 | /* Make string 0 be a NULL string. */ | |
2155 | streamer_write_char_stream (ob->string_stream, 0); | |
2156 | ||
2157 | /* Output DECL_INITIAL for the function, which contains the tree of | |
2158 | lexical scopes. */ | |
2159 | stream_write_tree (ob, DECL_INITIAL (var), true); | |
2160 | ||
2161 | /* Create a section to hold the pickled output of this function. */ | |
2162 | produce_asm (ob, var); | |
2163 | ||
2164 | destroy_output_block (ob); | |
2165 | } | |
2166 | ||
d7f09764 | 2167 | |
49f836ba JB |
2168 | /* Emit toplevel asms. */ |
2169 | ||
2170 | void | |
2171 | lto_output_toplevel_asms (void) | |
2172 | { | |
2173 | struct output_block *ob; | |
65d630d4 | 2174 | struct asm_node *can; |
49f836ba | 2175 | char *section_name; |
207c68cd | 2176 | struct lto_simple_header_with_strings header; |
49f836ba | 2177 | |
3dafb85c | 2178 | if (!symtab->first_asm_symbol ()) |
49f836ba JB |
2179 | return; |
2180 | ||
2181 | ob = create_output_block (LTO_section_asm); | |
2182 | ||
2183 | /* Make string 0 be a NULL string. */ | |
2184 | streamer_write_char_stream (ob->string_stream, 0); | |
2185 | ||
3dafb85c | 2186 | for (can = symtab->first_asm_symbol (); can; can = can->next) |
398f05da JH |
2187 | { |
2188 | streamer_write_string_cst (ob, ob->main_stream, can->asm_str); | |
2189 | streamer_write_hwi (ob, can->order); | |
2190 | } | |
49f836ba JB |
2191 | |
2192 | streamer_write_string_cst (ob, ob->main_stream, NULL_TREE); | |
2193 | ||
2194 | section_name = lto_get_section_name (LTO_section_asm, NULL, NULL); | |
2195 | lto_begin_section (section_name, !flag_wpa); | |
2196 | free (section_name); | |
2197 | ||
2198 | /* The entire header stream is computed here. */ | |
2199 | memset (&header, 0, sizeof (header)); | |
2200 | ||
2201 | /* Write the header. */ | |
207c68cd RB |
2202 | header.major_version = LTO_major_version; |
2203 | header.minor_version = LTO_minor_version; | |
49f836ba JB |
2204 | |
2205 | header.main_size = ob->main_stream->total_size; | |
2206 | header.string_size = ob->string_stream->total_size; | |
f6bcdb5e | 2207 | lto_write_data (&header, sizeof header); |
49f836ba JB |
2208 | |
2209 | /* Put all of the gimple and the string table out the asm file as a | |
2210 | block of text. */ | |
2211 | lto_write_stream (ob->main_stream); | |
2212 | lto_write_stream (ob->string_stream); | |
2213 | ||
2214 | lto_end_section (); | |
2215 | ||
2216 | destroy_output_block (ob); | |
2217 | } | |
2218 | ||
2219 | ||
0b83e688 | 2220 | /* Copy the function body or variable constructor of NODE without deserializing. */ |
d7f09764 DN |
2221 | |
2222 | static void | |
0b83e688 | 2223 | copy_function_or_variable (struct symtab_node *node) |
d7f09764 | 2224 | { |
67348ccc DM |
2225 | tree function = node->decl; |
2226 | struct lto_file_decl_data *file_data = node->lto_file_data; | |
d7f09764 DN |
2227 | const char *data; |
2228 | size_t len; | |
2229 | const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (function)); | |
91539475 | 2230 | char *section_name = |
73ce4d1e | 2231 | lto_get_section_name (LTO_section_function_body, name, NULL); |
d7f09764 DN |
2232 | size_t i, j; |
2233 | struct lto_in_decl_state *in_state; | |
91539475 | 2234 | struct lto_out_decl_state *out_state = lto_get_out_decl_state (); |
d7f09764 | 2235 | |
7fa658c2 | 2236 | lto_begin_section (section_name, false); |
d7f09764 DN |
2237 | free (section_name); |
2238 | ||
2239 | /* We may have renamed the declaration, e.g., a static function. */ | |
2240 | name = lto_get_decl_name_mapping (file_data, name); | |
2241 | ||
7fa658c2 JH |
2242 | data = lto_get_raw_section_data (file_data, LTO_section_function_body, |
2243 | name, &len); | |
d7f09764 DN |
2244 | gcc_assert (data); |
2245 | ||
2246 | /* Do a bit copy of the function body. */ | |
7fa658c2 | 2247 | lto_write_raw_data (data, len); |
d7f09764 DN |
2248 | |
2249 | /* Copy decls. */ | |
2250 | in_state = | |
67348ccc | 2251 | lto_get_function_in_decl_state (node->lto_file_data, function); |
7fa658c2 | 2252 | out_state->compressed = in_state->compressed; |
d7f09764 DN |
2253 | gcc_assert (in_state); |
2254 | ||
2255 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
2256 | { | |
9c71e9df TS |
2257 | size_t n = vec_safe_length (in_state->streams[i]); |
2258 | vec<tree, va_gc> *trees = in_state->streams[i]; | |
d7f09764 DN |
2259 | struct lto_tree_ref_encoder *encoder = &(out_state->streams[i]); |
2260 | ||
2261 | /* The out state must have the same indices and the in state. | |
2262 | So just copy the vector. All the encoders in the in state | |
2263 | must be empty where we reach here. */ | |
2264 | gcc_assert (lto_tree_ref_encoder_size (encoder) == 0); | |
d579fcda | 2265 | encoder->trees.reserve_exact (n); |
d7f09764 | 2266 | for (j = 0; j < n; j++) |
9c71e9df | 2267 | encoder->trees.safe_push ((*trees)[j]); |
d7f09764 | 2268 | } |
b8698a0f | 2269 | |
7fa658c2 JH |
2270 | lto_free_raw_section_data (file_data, LTO_section_function_body, name, |
2271 | data, len); | |
d7f09764 DN |
2272 | lto_end_section (); |
2273 | } | |
2274 | ||
8359c87e RB |
2275 | /* Wrap symbol references in *TP inside a type-preserving MEM_REF. */ |
2276 | ||
2277 | static tree | |
2278 | wrap_refs (tree *tp, int *ws, void *) | |
2279 | { | |
2280 | tree t = *tp; | |
2281 | if (handled_component_p (t) | |
35bd8e8f JH |
2282 | && TREE_CODE (TREE_OPERAND (t, 0)) == VAR_DECL |
2283 | && TREE_PUBLIC (TREE_OPERAND (t, 0))) | |
8359c87e RB |
2284 | { |
2285 | tree decl = TREE_OPERAND (t, 0); | |
2286 | tree ptrtype = build_pointer_type (TREE_TYPE (decl)); | |
2287 | TREE_OPERAND (t, 0) = build2 (MEM_REF, TREE_TYPE (decl), | |
2288 | build1 (ADDR_EXPR, ptrtype, decl), | |
2289 | build_int_cst (ptrtype, 0)); | |
2290 | TREE_THIS_VOLATILE (TREE_OPERAND (t, 0)) = TREE_THIS_VOLATILE (decl); | |
2291 | *ws = 0; | |
2292 | } | |
2293 | else if (TREE_CODE (t) == CONSTRUCTOR) | |
2294 | ; | |
2295 | else if (!EXPR_P (t)) | |
2296 | *ws = 0; | |
2297 | return NULL_TREE; | |
2298 | } | |
d7f09764 | 2299 | |
d7f09764 DN |
2300 | /* Main entry point from the pass manager. */ |
2301 | ||
38f4f02f | 2302 | void |
f27c1867 | 2303 | lto_output (void) |
d7f09764 | 2304 | { |
d7f09764 | 2305 | struct lto_out_decl_state *decl_state; |
b2b29377 | 2306 | bitmap output = NULL; |
91fbf0c7 | 2307 | int i, n_nodes; |
7380e6ef | 2308 | lto_symtab_encoder_t encoder = lto_get_out_decl_state ()->symtab_node_encoder; |
d7f09764 | 2309 | |
b2b29377 MM |
2310 | if (flag_checking) |
2311 | output = lto_bitmap_alloc (); | |
2312 | ||
47c79d56 DN |
2313 | /* Initialize the streamer. */ |
2314 | lto_streamer_init (); | |
d7f09764 | 2315 | |
7380e6ef | 2316 | n_nodes = lto_symtab_encoder_size (encoder); |
d7f09764 | 2317 | /* Process only the functions with bodies. */ |
91fbf0c7 | 2318 | for (i = 0; i < n_nodes; i++) |
d7f09764 | 2319 | { |
5e20cdc9 | 2320 | symtab_node *snode = lto_symtab_encoder_deref (encoder, i); |
7de90a6c | 2321 | if (cgraph_node *node = dyn_cast <cgraph_node *> (snode)) |
d7f09764 | 2322 | { |
8359c87e | 2323 | if (lto_symtab_encoder_encode_body_p (encoder, node) |
150be262 | 2324 | && !node->alias |
199fb02a | 2325 | && (!node->thunk.thunk_p || !node->thunk.add_pointer_bounds_args)) |
8359c87e | 2326 | { |
b2b29377 MM |
2327 | if (flag_checking) |
2328 | { | |
2329 | gcc_assert (!bitmap_bit_p (output, DECL_UID (node->decl))); | |
2330 | bitmap_set_bit (output, DECL_UID (node->decl)); | |
2331 | } | |
8359c87e RB |
2332 | decl_state = lto_new_out_decl_state (); |
2333 | lto_push_out_decl_state (decl_state); | |
48fb6d40 JH |
2334 | if (gimple_has_body_p (node->decl) || !flag_wpa |
2335 | /* Thunks have no body but they may be synthetized | |
2336 | at WPA time. */ | |
2337 | || DECL_ARGUMENTS (node->decl)) | |
8359c87e RB |
2338 | output_function (node); |
2339 | else | |
0b83e688 | 2340 | copy_function_or_variable (node); |
8359c87e RB |
2341 | gcc_assert (lto_get_out_decl_state () == decl_state); |
2342 | lto_pop_out_decl_state (); | |
2343 | lto_record_function_out_decl_state (node->decl, decl_state); | |
2344 | } | |
2345 | } | |
7de90a6c | 2346 | else if (varpool_node *node = dyn_cast <varpool_node *> (snode)) |
8359c87e RB |
2347 | { |
2348 | /* Wrap symbol references inside the ctor in a type | |
2349 | preserving MEM_REF. */ | |
2350 | tree ctor = DECL_INITIAL (node->decl); | |
2351 | if (ctor && !in_lto_p) | |
2352 | walk_tree (&ctor, wrap_refs, NULL, NULL); | |
0b83e688 JH |
2353 | if (get_symbol_initial_value (encoder, node->decl) == error_mark_node |
2354 | && lto_symtab_encoder_encode_initializer_p (encoder, node) | |
2355 | && !node->alias) | |
2356 | { | |
917dd9bf | 2357 | timevar_push (TV_IPA_LTO_CTORS_OUT); |
b2b29377 MM |
2358 | if (flag_checking) |
2359 | { | |
2360 | gcc_assert (!bitmap_bit_p (output, DECL_UID (node->decl))); | |
2361 | bitmap_set_bit (output, DECL_UID (node->decl)); | |
2362 | } | |
0b83e688 JH |
2363 | decl_state = lto_new_out_decl_state (); |
2364 | lto_push_out_decl_state (decl_state); | |
2365 | if (DECL_INITIAL (node->decl) != error_mark_node | |
2366 | || !flag_wpa) | |
2367 | output_constructor (node); | |
2368 | else | |
2369 | copy_function_or_variable (node); | |
2370 | gcc_assert (lto_get_out_decl_state () == decl_state); | |
2371 | lto_pop_out_decl_state (); | |
2372 | lto_record_function_out_decl_state (node->decl, decl_state); | |
917dd9bf | 2373 | timevar_pop (TV_IPA_LTO_CTORS_OUT); |
0b83e688 | 2374 | } |
d7f09764 DN |
2375 | } |
2376 | } | |
2377 | ||
2378 | /* Emit the callgraph after emitting function bodies. This needs to | |
2379 | be done now to make sure that all the statements in every function | |
2380 | have been renumbered so that edges can be associated with call | |
2381 | statements using the statement UIDs. */ | |
f27c1867 | 2382 | output_symtab (); |
d7f09764 | 2383 | |
ec6fe917 IV |
2384 | output_offload_tables (); |
2385 | ||
b2b29377 | 2386 | #if CHECKING_P |
d7f09764 | 2387 | lto_bitmap_free (output); |
18252dcf | 2388 | #endif |
d7f09764 DN |
2389 | } |
2390 | ||
b8698a0f | 2391 | /* Write each node in encoded by ENCODER to OB, as well as those reachable |
d7f09764 DN |
2392 | from it and required for correct representation of its semantics. |
2393 | Each node in ENCODER must be a global declaration or a type. A node | |
2394 | is written only once, even if it appears multiple times in the | |
2395 | vector. Certain transitively-reachable nodes, such as those | |
2396 | representing expressions, may be duplicated, but such nodes | |
2397 | must not appear in ENCODER itself. */ | |
2398 | ||
2399 | static void | |
2400 | write_global_stream (struct output_block *ob, | |
2401 | struct lto_tree_ref_encoder *encoder) | |
2402 | { | |
2403 | tree t; | |
2404 | size_t index; | |
2405 | const size_t size = lto_tree_ref_encoder_size (encoder); | |
2406 | ||
2407 | for (index = 0; index < size; index++) | |
2408 | { | |
2409 | t = lto_tree_ref_encoder_get_tree (encoder, index); | |
412288f1 | 2410 | if (!streamer_tree_cache_lookup (ob->writer_cache, t, NULL)) |
b9393656 | 2411 | stream_write_tree (ob, t, false); |
d7f09764 DN |
2412 | } |
2413 | } | |
2414 | ||
2415 | ||
2416 | /* Write a sequence of indices into the globals vector corresponding | |
2417 | to the trees in ENCODER. These are used by the reader to map the | |
2418 | indices used to refer to global entities within function bodies to | |
2419 | their referents. */ | |
2420 | ||
2421 | static void | |
2422 | write_global_references (struct output_block *ob, | |
d7f09764 DN |
2423 | struct lto_tree_ref_encoder *encoder) |
2424 | { | |
2425 | tree t; | |
e89964e3 MM |
2426 | uint32_t index; |
2427 | const uint32_t size = lto_tree_ref_encoder_size (encoder); | |
d7f09764 | 2428 | |
f6bcdb5e RB |
2429 | /* Write size and slot indexes as 32-bit unsigned numbers. */ |
2430 | uint32_t *data = XNEWVEC (uint32_t, size + 1); | |
2431 | data[0] = size; | |
d7f09764 DN |
2432 | |
2433 | for (index = 0; index < size; index++) | |
2434 | { | |
83b4db6d | 2435 | unsigned slot_num; |
d7f09764 DN |
2436 | |
2437 | t = lto_tree_ref_encoder_get_tree (encoder, index); | |
412288f1 | 2438 | streamer_tree_cache_lookup (ob->writer_cache, t, &slot_num); |
e89964e3 | 2439 | gcc_assert (slot_num != (unsigned)-1); |
f6bcdb5e | 2440 | data[index + 1] = slot_num; |
d7f09764 | 2441 | } |
f6bcdb5e RB |
2442 | |
2443 | lto_write_data (data, sizeof (int32_t) * (size + 1)); | |
2444 | free (data); | |
d7f09764 DN |
2445 | } |
2446 | ||
2447 | ||
2448 | /* Write all the streams in an lto_out_decl_state STATE using | |
2449 | output block OB and output stream OUT_STREAM. */ | |
2450 | ||
a183b5c7 | 2451 | void |
d7f09764 DN |
2452 | lto_output_decl_state_streams (struct output_block *ob, |
2453 | struct lto_out_decl_state *state) | |
2454 | { | |
2455 | int i; | |
2456 | ||
2457 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
2458 | write_global_stream (ob, &state->streams[i]); | |
2459 | } | |
2460 | ||
2461 | ||
2462 | /* Write all the references in an lto_out_decl_state STATE using | |
2463 | output block OB and output stream OUT_STREAM. */ | |
2464 | ||
a183b5c7 | 2465 | void |
d7f09764 | 2466 | lto_output_decl_state_refs (struct output_block *ob, |
d7f09764 DN |
2467 | struct lto_out_decl_state *state) |
2468 | { | |
2469 | unsigned i; | |
83b4db6d | 2470 | unsigned ref; |
d7f09764 | 2471 | tree decl; |
b8698a0f | 2472 | |
d7f09764 DN |
2473 | /* Write reference to FUNCTION_DECL. If there is not function, |
2474 | write reference to void_type_node. */ | |
2475 | decl = (state->fn_decl) ? state->fn_decl : void_type_node; | |
412288f1 | 2476 | streamer_tree_cache_lookup (ob->writer_cache, decl, &ref); |
e89964e3 | 2477 | gcc_assert (ref != (unsigned)-1); |
7fa658c2 | 2478 | ref = ref * 2 + (state->compressed ? 1 : 0); |
f6bcdb5e | 2479 | lto_write_data (&ref, sizeof (uint32_t)); |
d7f09764 DN |
2480 | |
2481 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
f6bcdb5e | 2482 | write_global_references (ob, &state->streams[i]); |
d7f09764 DN |
2483 | } |
2484 | ||
2485 | ||
2486 | /* Return the written size of STATE. */ | |
2487 | ||
2488 | static size_t | |
2489 | lto_out_decl_state_written_size (struct lto_out_decl_state *state) | |
2490 | { | |
2491 | int i; | |
2492 | size_t size; | |
2493 | ||
2494 | size = sizeof (int32_t); /* fn_ref. */ | |
2495 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
2496 | { | |
2497 | size += sizeof (int32_t); /* vector size. */ | |
2498 | size += (lto_tree_ref_encoder_size (&state->streams[i]) | |
2499 | * sizeof (int32_t)); | |
2500 | } | |
2501 | return size; | |
2502 | } | |
2503 | ||
2504 | ||
695c3817 JH |
2505 | /* Write symbol T into STREAM in CACHE. SEEN specifies symbols we wrote |
2506 | so far. */ | |
c5d1f058 JH |
2507 | |
2508 | static void | |
412288f1 | 2509 | write_symbol (struct streamer_tree_cache_d *cache, |
6e2830c3 | 2510 | tree t, hash_set<const char *> *seen, bool alias) |
c5d1f058 JH |
2511 | { |
2512 | const char *name; | |
2513 | enum gcc_plugin_symbol_kind kind; | |
083e891e | 2514 | enum gcc_plugin_symbol_visibility visibility = GCCPV_DEFAULT; |
e89964e3 | 2515 | unsigned slot_num; |
a9243bfc | 2516 | uint64_t size; |
c5d1f058 | 2517 | const char *comdat; |
7d58701c | 2518 | unsigned char c; |
c5d1f058 JH |
2519 | |
2520 | /* None of the following kinds of symbols are needed in the | |
2521 | symbol table. */ | |
2522 | if (!TREE_PUBLIC (t) | |
2523 | || is_builtin_fn (t) | |
00de328a | 2524 | || DECL_ABSTRACT_P (t) |
7cbda518 | 2525 | || (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t))) |
c5d1f058 | 2526 | return; |
815effe1 | 2527 | gcc_assert (TREE_CODE (t) != RESULT_DECL); |
c5d1f058 JH |
2528 | |
2529 | gcc_assert (TREE_CODE (t) == VAR_DECL | |
2530 | || TREE_CODE (t) == FUNCTION_DECL); | |
2531 | ||
2532 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (t)); | |
2533 | ||
77754180 DK |
2534 | /* This behaves like assemble_name_raw in varasm.c, performing the |
2535 | same name manipulations that ASM_OUTPUT_LABELREF does. */ | |
2536 | name = IDENTIFIER_POINTER ((*targetm.asm_out.mangle_assembler_name) (name)); | |
2537 | ||
6e2830c3 | 2538 | if (seen->add (name)) |
695c3817 | 2539 | return; |
695c3817 | 2540 | |
412288f1 | 2541 | streamer_tree_cache_lookup (cache, t, &slot_num); |
e89964e3 | 2542 | gcc_assert (slot_num != (unsigned)-1); |
c5d1f058 | 2543 | |
c5d1f058 | 2544 | if (DECL_EXTERNAL (t)) |
d7f09764 | 2545 | { |
c5d1f058 JH |
2546 | if (DECL_WEAK (t)) |
2547 | kind = GCCPK_WEAKUNDEF; | |
d7f09764 | 2548 | else |
c5d1f058 JH |
2549 | kind = GCCPK_UNDEF; |
2550 | } | |
2551 | else | |
2552 | { | |
2553 | if (DECL_WEAK (t)) | |
2554 | kind = GCCPK_WEAKDEF; | |
2555 | else if (DECL_COMMON (t)) | |
2556 | kind = GCCPK_COMMON; | |
d7f09764 | 2557 | else |
c5d1f058 JH |
2558 | kind = GCCPK_DEF; |
2559 | ||
695c3817 JH |
2560 | /* When something is defined, it should have node attached. */ |
2561 | gcc_assert (alias || TREE_CODE (t) != VAR_DECL | |
9041d2e6 | 2562 | || varpool_node::get (t)->definition); |
c5d1f058 | 2563 | gcc_assert (alias || TREE_CODE (t) != FUNCTION_DECL |
d52f5295 ML |
2564 | || (cgraph_node::get (t) |
2565 | && cgraph_node::get (t)->definition)); | |
d7f09764 | 2566 | } |
d7f09764 | 2567 | |
5d7f4d9c JH |
2568 | /* Imitate what default_elf_asm_output_external do. |
2569 | When symbol is external, we need to output it with DEFAULT visibility | |
2570 | when compiling with -fvisibility=default, while with HIDDEN visibility | |
2571 | when symbol has attribute (visibility("hidden")) specified. | |
2572 | targetm.binds_local_p check DECL_VISIBILITY_SPECIFIED and gets this | |
2573 | right. */ | |
4ad9a9de | 2574 | |
5d7f4d9c JH |
2575 | if (DECL_EXTERNAL (t) |
2576 | && !targetm.binds_local_p (t)) | |
2577 | visibility = GCCPV_DEFAULT; | |
2578 | else | |
c3284718 | 2579 | switch (DECL_VISIBILITY (t)) |
5d7f4d9c JH |
2580 | { |
2581 | case VISIBILITY_DEFAULT: | |
2582 | visibility = GCCPV_DEFAULT; | |
2583 | break; | |
2584 | case VISIBILITY_PROTECTED: | |
2585 | visibility = GCCPV_PROTECTED; | |
2586 | break; | |
2587 | case VISIBILITY_HIDDEN: | |
2588 | visibility = GCCPV_HIDDEN; | |
2589 | break; | |
2590 | case VISIBILITY_INTERNAL: | |
2591 | visibility = GCCPV_INTERNAL; | |
2592 | break; | |
2593 | } | |
d7f09764 | 2594 | |
c5d1f058 | 2595 | if (kind == GCCPK_COMMON |
4ad9a9de EB |
2596 | && DECL_SIZE_UNIT (t) |
2597 | && TREE_CODE (DECL_SIZE_UNIT (t)) == INTEGER_CST) | |
2598 | size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (t)); | |
c5d1f058 JH |
2599 | else |
2600 | size = 0; | |
2601 | ||
2602 | if (DECL_ONE_ONLY (t)) | |
d67ff7b7 | 2603 | comdat = IDENTIFIER_POINTER (decl_comdat_group_id (t)); |
c5d1f058 JH |
2604 | else |
2605 | comdat = ""; | |
2606 | ||
f6bcdb5e RB |
2607 | lto_write_data (name, strlen (name) + 1); |
2608 | lto_write_data (comdat, strlen (comdat) + 1); | |
7d58701c | 2609 | c = (unsigned char) kind; |
f6bcdb5e | 2610 | lto_write_data (&c, 1); |
7d58701c | 2611 | c = (unsigned char) visibility; |
f6bcdb5e RB |
2612 | lto_write_data (&c, 1); |
2613 | lto_write_data (&size, 8); | |
2614 | lto_write_data (&slot_num, 4); | |
d7f09764 DN |
2615 | } |
2616 | ||
2c2c4b29 JH |
2617 | /* Return true if NODE should appear in the plugin symbol table. */ |
2618 | ||
2619 | bool | |
5e20cdc9 | 2620 | output_symbol_p (symtab_node *node) |
2c2c4b29 JH |
2621 | { |
2622 | struct cgraph_node *cnode; | |
d52f5295 | 2623 | if (!node->real_symbol_p ()) |
2c2c4b29 JH |
2624 | return false; |
2625 | /* We keep external functions in symtab for sake of inlining | |
2626 | and devirtualization. We do not want to see them in symbol table as | |
4f38fa8c | 2627 | references unless they are really used. */ |
7de90a6c | 2628 | cnode = dyn_cast <cgraph_node *> (node); |
67348ccc | 2629 | if (cnode && (!node->definition || DECL_EXTERNAL (cnode->decl)) |
4f38fa8c JH |
2630 | && cnode->callers) |
2631 | return true; | |
2632 | ||
2633 | /* Ignore all references from external vars initializers - they are not really | |
2634 | part of the compilation unit until they are used by folding. Some symbols, | |
2635 | like references to external construction vtables can not be referred to at all. | |
2636 | We decide this at can_refer_decl_in_current_unit_p. */ | |
67348ccc | 2637 | if (!node->definition || DECL_EXTERNAL (node->decl)) |
4f38fa8c JH |
2638 | { |
2639 | int i; | |
2640 | struct ipa_ref *ref; | |
d122681a | 2641 | for (i = 0; node->iterate_referring (i, ref); i++) |
4f38fa8c JH |
2642 | { |
2643 | if (ref->use == IPA_REF_ALIAS) | |
2644 | continue; | |
7de90a6c | 2645 | if (is_a <cgraph_node *> (ref->referring)) |
4f38fa8c | 2646 | return true; |
67348ccc | 2647 | if (!DECL_EXTERNAL (ref->referring->decl)) |
4f38fa8c JH |
2648 | return true; |
2649 | } | |
2650 | return false; | |
2651 | } | |
2c2c4b29 JH |
2652 | return true; |
2653 | } | |
2654 | ||
d7f09764 | 2655 | |
c5d1f058 JH |
2656 | /* Write an IL symbol table to OB. |
2657 | SET and VSET are cgraph/varpool node sets we are outputting. */ | |
d7f09764 DN |
2658 | |
2659 | static void | |
877ab5e9 | 2660 | produce_symtab (struct output_block *ob) |
d7f09764 | 2661 | { |
412288f1 | 2662 | struct streamer_tree_cache_d *cache = ob->writer_cache; |
73ce4d1e | 2663 | char *section_name = lto_get_section_name (LTO_section_symtab, NULL, NULL); |
7380e6ef | 2664 | lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder; |
c2954538 | 2665 | lto_symtab_encoder_iterator lsei; |
d7f09764 DN |
2666 | |
2667 | lto_begin_section (section_name, false); | |
2668 | free (section_name); | |
2669 | ||
6e2830c3 | 2670 | hash_set<const char *> seen; |
c5d1f058 | 2671 | |
c2954538 JH |
2672 | /* Write the symbol table. |
2673 | First write everything defined and then all declarations. | |
1aa95df7 | 2674 | This is necessary to handle cases where we have duplicated symbols. */ |
c2954538 JH |
2675 | for (lsei = lsei_start (encoder); |
2676 | !lsei_end_p (lsei); lsei_next (&lsei)) | |
c5d1f058 | 2677 | { |
5e20cdc9 | 2678 | symtab_node *node = lsei_node (lsei); |
c2954538 | 2679 | |
67348ccc | 2680 | if (!output_symbol_p (node) || DECL_EXTERNAL (node->decl)) |
695c3817 | 2681 | continue; |
6e2830c3 | 2682 | write_symbol (cache, node->decl, &seen, false); |
695c3817 | 2683 | } |
c2954538 JH |
2684 | for (lsei = lsei_start (encoder); |
2685 | !lsei_end_p (lsei); lsei_next (&lsei)) | |
695c3817 | 2686 | { |
5e20cdc9 | 2687 | symtab_node *node = lsei_node (lsei); |
c5d1f058 | 2688 | |
67348ccc | 2689 | if (!output_symbol_p (node) || !DECL_EXTERNAL (node->decl)) |
695c3817 | 2690 | continue; |
6e2830c3 | 2691 | write_symbol (cache, node->decl, &seen, false); |
c5d1f058 JH |
2692 | } |
2693 | ||
d7f09764 DN |
2694 | lto_end_section (); |
2695 | } | |
2696 | ||
2697 | ||
db847fa8 JJ |
2698 | /* Init the streamer_mode_table for output, where we collect info on what |
2699 | machine_mode values have been streamed. */ | |
2700 | void | |
2701 | lto_output_init_mode_table (void) | |
2702 | { | |
2703 | memset (streamer_mode_table, '\0', MAX_MACHINE_MODE); | |
2704 | } | |
2705 | ||
2706 | ||
2707 | /* Write the mode table. */ | |
2708 | static void | |
2709 | lto_write_mode_table (void) | |
2710 | { | |
2711 | struct output_block *ob; | |
2712 | ob = create_output_block (LTO_section_mode_table); | |
2713 | bitpack_d bp = bitpack_create (ob->main_stream); | |
2714 | ||
96a2d174 | 2715 | /* Ensure that for GET_MODE_INNER (m) != m we have |
db847fa8 JJ |
2716 | also the inner mode marked. */ |
2717 | for (int i = 0; i < (int) MAX_MACHINE_MODE; i++) | |
2718 | if (streamer_mode_table[i]) | |
2719 | { | |
2720 | machine_mode m = (machine_mode) i; | |
1c0e448f | 2721 | if (GET_MODE_INNER (m) != m) |
db847fa8 JJ |
2722 | streamer_mode_table[(int) GET_MODE_INNER (m)] = 1; |
2723 | } | |
96a2d174 | 2724 | /* First stream modes that have GET_MODE_INNER (m) == m, |
db847fa8 JJ |
2725 | so that we can refer to them afterwards. */ |
2726 | for (int pass = 0; pass < 2; pass++) | |
2727 | for (int i = 0; i < (int) MAX_MACHINE_MODE; i++) | |
2728 | if (streamer_mode_table[i] && i != (int) VOIDmode && i != (int) BLKmode) | |
2729 | { | |
2730 | machine_mode m = (machine_mode) i; | |
1c0e448f | 2731 | if ((GET_MODE_INNER (m) == m) ^ (pass == 0)) |
db847fa8 JJ |
2732 | continue; |
2733 | bp_pack_value (&bp, m, 8); | |
2734 | bp_pack_enum (&bp, mode_class, MAX_MODE_CLASS, GET_MODE_CLASS (m)); | |
2735 | bp_pack_value (&bp, GET_MODE_SIZE (m), 8); | |
2736 | bp_pack_value (&bp, GET_MODE_PRECISION (m), 16); | |
2737 | bp_pack_value (&bp, GET_MODE_INNER (m), 8); | |
2738 | bp_pack_value (&bp, GET_MODE_NUNITS (m), 8); | |
2739 | switch (GET_MODE_CLASS (m)) | |
2740 | { | |
2741 | case MODE_FRACT: | |
2742 | case MODE_UFRACT: | |
2743 | case MODE_ACCUM: | |
2744 | case MODE_UACCUM: | |
2745 | bp_pack_value (&bp, GET_MODE_IBIT (m), 8); | |
2746 | bp_pack_value (&bp, GET_MODE_FBIT (m), 8); | |
2747 | break; | |
2748 | case MODE_FLOAT: | |
2749 | case MODE_DECIMAL_FLOAT: | |
2750 | bp_pack_string (ob, &bp, REAL_MODE_FORMAT (m)->name, true); | |
2751 | break; | |
2752 | default: | |
2753 | break; | |
2754 | } | |
2755 | bp_pack_string (ob, &bp, GET_MODE_NAME (m), true); | |
2756 | } | |
2757 | bp_pack_value (&bp, VOIDmode, 8); | |
2758 | ||
2759 | streamer_write_bitpack (&bp); | |
2760 | ||
2761 | char *section_name | |
2762 | = lto_get_section_name (LTO_section_mode_table, NULL, NULL); | |
2763 | lto_begin_section (section_name, !flag_wpa); | |
2764 | free (section_name); | |
2765 | ||
2766 | /* The entire header stream is computed here. */ | |
2767 | struct lto_simple_header_with_strings header; | |
2768 | memset (&header, 0, sizeof (header)); | |
2769 | ||
2770 | /* Write the header. */ | |
2771 | header.major_version = LTO_major_version; | |
2772 | header.minor_version = LTO_minor_version; | |
2773 | ||
2774 | header.main_size = ob->main_stream->total_size; | |
2775 | header.string_size = ob->string_stream->total_size; | |
2776 | lto_write_data (&header, sizeof header); | |
2777 | ||
2778 | /* Put all of the gimple and the string table out the asm file as a | |
2779 | block of text. */ | |
2780 | lto_write_stream (ob->main_stream); | |
2781 | lto_write_stream (ob->string_stream); | |
2782 | ||
2783 | lto_end_section (); | |
2784 | destroy_output_block (ob); | |
2785 | } | |
2786 | ||
2787 | ||
d7f09764 DN |
2788 | /* This pass is run after all of the functions are serialized and all |
2789 | of the IPA passes have written their serialized forms. This pass | |
2790 | causes the vector of all of the global decls and types used from | |
2791 | this file to be written in to a section that can then be read in to | |
2792 | recover these on other side. */ | |
2793 | ||
38f4f02f | 2794 | void |
f27c1867 | 2795 | produce_asm_for_decls (void) |
d7f09764 DN |
2796 | { |
2797 | struct lto_out_decl_state *out_state; | |
2798 | struct lto_out_decl_state *fn_out_state; | |
2799 | struct lto_decl_header header; | |
2800 | char *section_name; | |
2801 | struct output_block *ob; | |
d7f09764 DN |
2802 | unsigned idx, num_fns; |
2803 | size_t decl_state_size; | |
2804 | int32_t num_decl_states; | |
2805 | ||
2806 | ob = create_output_block (LTO_section_decls); | |
d7f09764 | 2807 | |
b8698a0f | 2808 | memset (&header, 0, sizeof (struct lto_decl_header)); |
d7f09764 | 2809 | |
73ce4d1e | 2810 | section_name = lto_get_section_name (LTO_section_decls, NULL, NULL); |
d7f09764 DN |
2811 | lto_begin_section (section_name, !flag_wpa); |
2812 | free (section_name); | |
2813 | ||
2814 | /* Make string 0 be a NULL string. */ | |
412288f1 | 2815 | streamer_write_char_stream (ob->string_stream, 0); |
d7f09764 | 2816 | |
877ab5e9 JH |
2817 | gcc_assert (!alias_pairs); |
2818 | ||
bdc67fd6 | 2819 | /* Get rid of the global decl state hash tables to save some memory. */ |
d7f09764 | 2820 | out_state = lto_get_out_decl_state (); |
bdc67fd6 RB |
2821 | for (int i = 0; i < LTO_N_DECL_STREAMS; i++) |
2822 | if (out_state->streams[i].tree_hash_table) | |
2823 | { | |
2824 | delete out_state->streams[i].tree_hash_table; | |
2825 | out_state->streams[i].tree_hash_table = NULL; | |
2826 | } | |
2827 | ||
2828 | /* Write the global symbols. */ | |
d7f09764 | 2829 | lto_output_decl_state_streams (ob, out_state); |
bdc67fd6 | 2830 | num_fns = lto_function_decl_states.length (); |
d7f09764 DN |
2831 | for (idx = 0; idx < num_fns; idx++) |
2832 | { | |
2833 | fn_out_state = | |
9771b263 | 2834 | lto_function_decl_states[idx]; |
d7f09764 DN |
2835 | lto_output_decl_state_streams (ob, fn_out_state); |
2836 | } | |
2837 | ||
207c68cd RB |
2838 | header.major_version = LTO_major_version; |
2839 | header.minor_version = LTO_minor_version; | |
d7f09764 DN |
2840 | |
2841 | /* Currently not used. This field would allow us to preallocate | |
2842 | the globals vector, so that it need not be resized as it is extended. */ | |
2843 | header.num_nodes = -1; | |
2844 | ||
2845 | /* Compute the total size of all decl out states. */ | |
2846 | decl_state_size = sizeof (int32_t); | |
2847 | decl_state_size += lto_out_decl_state_written_size (out_state); | |
2848 | for (idx = 0; idx < num_fns; idx++) | |
2849 | { | |
2850 | fn_out_state = | |
9771b263 | 2851 | lto_function_decl_states[idx]; |
d7f09764 DN |
2852 | decl_state_size += lto_out_decl_state_written_size (fn_out_state); |
2853 | } | |
2854 | header.decl_state_size = decl_state_size; | |
2855 | ||
2856 | header.main_size = ob->main_stream->total_size; | |
2857 | header.string_size = ob->string_stream->total_size; | |
2858 | ||
f6bcdb5e | 2859 | lto_write_data (&header, sizeof header); |
b8698a0f | 2860 | |
d7f09764 DN |
2861 | /* Write the main out-decl state, followed by out-decl states of |
2862 | functions. */ | |
d7f09764 | 2863 | num_decl_states = num_fns + 1; |
f6bcdb5e RB |
2864 | lto_write_data (&num_decl_states, sizeof (num_decl_states)); |
2865 | lto_output_decl_state_refs (ob, out_state); | |
d7f09764 DN |
2866 | for (idx = 0; idx < num_fns; idx++) |
2867 | { | |
f6bcdb5e RB |
2868 | fn_out_state = lto_function_decl_states[idx]; |
2869 | lto_output_decl_state_refs (ob, fn_out_state); | |
d7f09764 | 2870 | } |
d7f09764 DN |
2871 | |
2872 | lto_write_stream (ob->main_stream); | |
2873 | lto_write_stream (ob->string_stream); | |
2874 | ||
2875 | lto_end_section (); | |
2876 | ||
c5d1f058 JH |
2877 | /* Write the symbol table. It is used by linker to determine dependencies |
2878 | and thus we can skip it for WPA. */ | |
2879 | if (!flag_wpa) | |
877ab5e9 | 2880 | produce_symtab (ob); |
d7f09764 DN |
2881 | |
2882 | /* Write command line opts. */ | |
2883 | lto_write_options (); | |
2884 | ||
2885 | /* Deallocate memory and clean up. */ | |
6cd174f6 JH |
2886 | for (idx = 0; idx < num_fns; idx++) |
2887 | { | |
2888 | fn_out_state = | |
9771b263 | 2889 | lto_function_decl_states[idx]; |
6cd174f6 JH |
2890 | lto_delete_out_decl_state (fn_out_state); |
2891 | } | |
7380e6ef | 2892 | lto_symtab_encoder_delete (ob->decl_state->symtab_node_encoder); |
9771b263 | 2893 | lto_function_decl_states.release (); |
d7f09764 | 2894 | destroy_output_block (ob); |
db847fa8 JJ |
2895 | if (lto_stream_offload_p) |
2896 | lto_write_mode_table (); | |
d7f09764 | 2897 | } |