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Commit | Line | Data |
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d7f09764 DN |
1 | /* Write the GIMPLE representation to a file stream. |
2 | ||
85ec4feb | 3 | Copyright (C) 2009-2018 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" |
1ea85365 | 43 | #include "debug.h" |
60bf575c | 44 | #include "omp-offload.h" |
b4da704c | 45 | #include "print-tree.h" |
d7f09764 DN |
46 | |
47 | ||
5f673c6a TB |
48 | static void lto_write_tree (struct output_block*, tree, bool); |
49 | ||
d7f09764 DN |
50 | /* Clear the line info stored in DATA_IN. */ |
51 | ||
52 | static void | |
53 | clear_line_info (struct output_block *ob) | |
54 | { | |
55 | ob->current_file = NULL; | |
56 | ob->current_line = 0; | |
57 | ob->current_col = 0; | |
a9dfad6d | 58 | ob->current_sysp = false; |
d7f09764 DN |
59 | } |
60 | ||
61 | ||
62 | /* Create the output block and return it. SECTION_TYPE is | |
63 | LTO_section_function_body or LTO_static_initializer. */ | |
64 | ||
65 | struct output_block * | |
66 | create_output_block (enum lto_section_type section_type) | |
67 | { | |
68 | struct output_block *ob = XCNEW (struct output_block); | |
b4da704c JH |
69 | if (streamer_dump_file) |
70 | fprintf (streamer_dump_file, "Creating output block for %s\n", | |
71 | lto_section_name [section_type]); | |
d7f09764 DN |
72 | |
73 | ob->section_type = section_type; | |
74 | ob->decl_state = lto_get_out_decl_state (); | |
f0efc7aa DN |
75 | ob->main_stream = XCNEW (struct lto_output_stream); |
76 | ob->string_stream = XCNEW (struct lto_output_stream); | |
bdc67fd6 | 77 | ob->writer_cache = streamer_tree_cache_create (!flag_wpa, true, false); |
d7f09764 | 78 | |
f0efc7aa DN |
79 | if (section_type == LTO_section_function_body) |
80 | ob->cfg_stream = XCNEW (struct lto_output_stream); | |
d7f09764 | 81 | |
f0efc7aa | 82 | clear_line_info (ob); |
51545682 | 83 | |
c203e8a7 | 84 | ob->string_hash_table = new hash_table<string_slot_hasher> (37); |
f0efc7aa | 85 | gcc_obstack_init (&ob->obstack); |
d7f09764 | 86 | |
f0efc7aa DN |
87 | return ob; |
88 | } | |
d7f09764 | 89 | |
d7f09764 | 90 | |
f0efc7aa | 91 | /* Destroy the output block OB. */ |
d7f09764 | 92 | |
f0efc7aa DN |
93 | void |
94 | destroy_output_block (struct output_block *ob) | |
95 | { | |
96 | enum lto_section_type section_type = ob->section_type; | |
d7f09764 | 97 | |
c203e8a7 TS |
98 | delete ob->string_hash_table; |
99 | ob->string_hash_table = NULL; | |
d7f09764 | 100 | |
f0efc7aa DN |
101 | free (ob->main_stream); |
102 | free (ob->string_stream); | |
103 | if (section_type == LTO_section_function_body) | |
104 | free (ob->cfg_stream); | |
d7f09764 | 105 | |
412288f1 | 106 | streamer_tree_cache_delete (ob->writer_cache); |
f0efc7aa | 107 | obstack_free (&ob->obstack, NULL); |
6be14c0e | 108 | |
f0efc7aa | 109 | free (ob); |
d7f09764 DN |
110 | } |
111 | ||
112 | ||
f0efc7aa | 113 | /* Look up NODE in the type table and write the index for it to OB. */ |
d7f09764 DN |
114 | |
115 | static void | |
f0efc7aa | 116 | output_type_ref (struct output_block *ob, tree node) |
d7f09764 | 117 | { |
412288f1 | 118 | streamer_write_record_start (ob, LTO_type_ref); |
f0efc7aa | 119 | lto_output_type_ref_index (ob->decl_state, ob->main_stream, node); |
d7f09764 DN |
120 | } |
121 | ||
122 | ||
f0efc7aa DN |
123 | /* Return true if tree node T is written to various tables. For these |
124 | nodes, we sometimes want to write their phyiscal representation | |
125 | (via lto_output_tree), and sometimes we need to emit an index | |
126 | reference into a table (via lto_output_tree_ref). */ | |
d7f09764 | 127 | |
f0efc7aa DN |
128 | static bool |
129 | tree_is_indexable (tree t) | |
d7f09764 | 130 | { |
61a74079 JH |
131 | /* Parameters and return values of functions of variably modified types |
132 | must go to global stream, because they may be used in the type | |
133 | definition. */ | |
e0ffb247 RB |
134 | if ((TREE_CODE (t) == PARM_DECL || TREE_CODE (t) == RESULT_DECL) |
135 | && DECL_CONTEXT (t)) | |
61a74079 | 136 | return variably_modified_type_p (TREE_TYPE (DECL_CONTEXT (t)), NULL_TREE); |
6b0917f4 JH |
137 | /* IMPORTED_DECL is put into BLOCK and thus it never can be shared. |
138 | We should no longer need to stream it. */ | |
52d8a590 | 139 | else if (TREE_CODE (t) == IMPORTED_DECL) |
6b0917f4 JH |
140 | gcc_unreachable (); |
141 | else if (TREE_CODE (t) == LABEL_DECL) | |
142 | return FORCED_LABEL (t) || DECL_NONLOCAL (t); | |
8813a647 | 143 | else if (((VAR_P (t) && !TREE_STATIC (t)) |
53a5717e | 144 | || TREE_CODE (t) == TYPE_DECL |
c39276b8 RB |
145 | || TREE_CODE (t) == CONST_DECL |
146 | || TREE_CODE (t) == NAMELIST_DECL) | |
53a5717e | 147 | && decl_function_context (t)) |
f0efc7aa | 148 | return false; |
ee03e71d RB |
149 | else if (TREE_CODE (t) == DEBUG_EXPR_DECL) |
150 | return false; | |
befa62e7 RG |
151 | /* Variably modified types need to be streamed alongside function |
152 | bodies because they can refer to local entities. Together with | |
153 | them we have to localize their members as well. | |
154 | ??? In theory that includes non-FIELD_DECLs as well. */ | |
155 | else if (TYPE_P (t) | |
156 | && variably_modified_type_p (t, NULL_TREE)) | |
157 | return false; | |
158 | else if (TREE_CODE (t) == FIELD_DECL | |
159 | && variably_modified_type_p (DECL_CONTEXT (t), NULL_TREE)) | |
160 | return false; | |
d7f09764 | 161 | else |
f0efc7aa | 162 | return (TYPE_P (t) || DECL_P (t) || TREE_CODE (t) == SSA_NAME); |
d7f09764 DN |
163 | } |
164 | ||
165 | ||
f0efc7aa DN |
166 | /* Output info about new location into bitpack BP. |
167 | After outputting bitpack, lto_output_location_data has | |
168 | to be done to output actual data. */ | |
d7f09764 | 169 | |
7cb7d208 RB |
170 | void |
171 | lto_output_location (struct output_block *ob, struct bitpack_d *bp, | |
172 | location_t loc) | |
d7f09764 | 173 | { |
f0efc7aa | 174 | expanded_location xloc; |
d7f09764 | 175 | |
5368224f | 176 | loc = LOCATION_LOCUS (loc); |
44433db0 JH |
177 | bp_pack_int_in_range (bp, 0, RESERVED_LOCATION_COUNT, |
178 | loc < RESERVED_LOCATION_COUNT | |
179 | ? loc : RESERVED_LOCATION_COUNT); | |
180 | if (loc < RESERVED_LOCATION_COUNT) | |
f0efc7aa | 181 | return; |
d7f09764 | 182 | |
f0efc7aa | 183 | xloc = expand_location (loc); |
d7f09764 | 184 | |
f0efc7aa | 185 | bp_pack_value (bp, ob->current_file != xloc.file, 1); |
e45cde98 RB |
186 | bp_pack_value (bp, ob->current_line != xloc.line, 1); |
187 | bp_pack_value (bp, ob->current_col != xloc.column, 1); | |
188 | ||
f0efc7aa | 189 | if (ob->current_file != xloc.file) |
6c1bc27c RB |
190 | { |
191 | bp_pack_string (ob, bp, xloc.file, true); | |
192 | bp_pack_value (bp, xloc.sysp, 1); | |
193 | } | |
f0efc7aa | 194 | ob->current_file = xloc.file; |
6c1bc27c | 195 | ob->current_sysp = xloc.sysp; |
d7f09764 | 196 | |
f0efc7aa DN |
197 | if (ob->current_line != xloc.line) |
198 | bp_pack_var_len_unsigned (bp, xloc.line); | |
199 | ob->current_line = xloc.line; | |
47c79d56 | 200 | |
f0efc7aa DN |
201 | if (ob->current_col != xloc.column) |
202 | bp_pack_var_len_unsigned (bp, xloc.column); | |
203 | ob->current_col = xloc.column; | |
d7f09764 DN |
204 | } |
205 | ||
206 | ||
f0efc7aa DN |
207 | /* If EXPR is an indexable tree node, output a reference to it to |
208 | output block OB. Otherwise, output the physical representation of | |
209 | EXPR to OB. */ | |
d7f09764 | 210 | |
b9393656 | 211 | static void |
f0efc7aa | 212 | lto_output_tree_ref (struct output_block *ob, tree expr) |
d7f09764 | 213 | { |
f0efc7aa | 214 | enum tree_code code; |
d7f09764 | 215 | |
f0efc7aa | 216 | if (TYPE_P (expr)) |
d7f09764 | 217 | { |
f0efc7aa DN |
218 | output_type_ref (ob, expr); |
219 | return; | |
d7f09764 | 220 | } |
f0efc7aa DN |
221 | |
222 | code = TREE_CODE (expr); | |
223 | switch (code) | |
d7f09764 | 224 | { |
f0efc7aa | 225 | case SSA_NAME: |
412288f1 DN |
226 | streamer_write_record_start (ob, LTO_ssa_name_ref); |
227 | streamer_write_uhwi (ob, SSA_NAME_VERSION (expr)); | |
f0efc7aa DN |
228 | break; |
229 | ||
230 | case FIELD_DECL: | |
412288f1 | 231 | streamer_write_record_start (ob, LTO_field_decl_ref); |
f0efc7aa DN |
232 | lto_output_field_decl_index (ob->decl_state, ob->main_stream, expr); |
233 | break; | |
234 | ||
235 | case FUNCTION_DECL: | |
412288f1 | 236 | streamer_write_record_start (ob, LTO_function_decl_ref); |
f0efc7aa DN |
237 | lto_output_fn_decl_index (ob->decl_state, ob->main_stream, expr); |
238 | break; | |
239 | ||
240 | case VAR_DECL: | |
241 | case DEBUG_EXPR_DECL: | |
b9393656 | 242 | gcc_assert (decl_function_context (expr) == NULL || TREE_STATIC (expr)); |
191816a3 | 243 | /* FALLTHRU */ |
9aef8e95 | 244 | case PARM_DECL: |
412288f1 | 245 | streamer_write_record_start (ob, LTO_global_decl_ref); |
f0efc7aa DN |
246 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
247 | break; | |
248 | ||
249 | case CONST_DECL: | |
412288f1 | 250 | streamer_write_record_start (ob, LTO_const_decl_ref); |
f0efc7aa DN |
251 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
252 | break; | |
253 | ||
254 | case IMPORTED_DECL: | |
255 | gcc_assert (decl_function_context (expr) == NULL); | |
412288f1 | 256 | streamer_write_record_start (ob, LTO_imported_decl_ref); |
f0efc7aa DN |
257 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
258 | break; | |
259 | ||
260 | case TYPE_DECL: | |
412288f1 | 261 | streamer_write_record_start (ob, LTO_type_decl_ref); |
f0efc7aa DN |
262 | lto_output_type_decl_index (ob->decl_state, ob->main_stream, expr); |
263 | break; | |
264 | ||
5f673c6a | 265 | case NAMELIST_DECL: |
c39276b8 RB |
266 | streamer_write_record_start (ob, LTO_namelist_decl_ref); |
267 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); | |
268 | break; | |
5f673c6a | 269 | |
f0efc7aa | 270 | case NAMESPACE_DECL: |
412288f1 | 271 | streamer_write_record_start (ob, LTO_namespace_decl_ref); |
f0efc7aa DN |
272 | lto_output_namespace_decl_index (ob->decl_state, ob->main_stream, expr); |
273 | break; | |
274 | ||
275 | case LABEL_DECL: | |
412288f1 | 276 | streamer_write_record_start (ob, LTO_label_decl_ref); |
f0efc7aa DN |
277 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
278 | break; | |
279 | ||
280 | case RESULT_DECL: | |
412288f1 | 281 | streamer_write_record_start (ob, LTO_result_decl_ref); |
f0efc7aa DN |
282 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
283 | break; | |
284 | ||
285 | case TRANSLATION_UNIT_DECL: | |
412288f1 | 286 | streamer_write_record_start (ob, LTO_translation_unit_decl_ref); |
f0efc7aa DN |
287 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr); |
288 | break; | |
289 | ||
290 | default: | |
b9393656 DN |
291 | /* No other node is indexable, so it should have been handled by |
292 | lto_output_tree. */ | |
293 | gcc_unreachable (); | |
294 | } | |
295 | } | |
296 | ||
297 | ||
298 | /* Return true if EXPR is a tree node that can be written to disk. */ | |
299 | ||
300 | static inline bool | |
301 | lto_is_streamable (tree expr) | |
302 | { | |
303 | enum tree_code code = TREE_CODE (expr); | |
304 | ||
305 | /* Notice that we reject SSA_NAMEs as well. We only emit the SSA | |
306 | name version in lto_output_tree_ref (see output_ssa_names). */ | |
307 | return !is_lang_specific (expr) | |
308 | && code != SSA_NAME | |
309 | && code != CALL_EXPR | |
310 | && code != LANG_TYPE | |
311 | && code != MODIFY_EXPR | |
312 | && code != INIT_EXPR | |
313 | && code != TARGET_EXPR | |
314 | && code != BIND_EXPR | |
315 | && code != WITH_CLEANUP_EXPR | |
316 | && code != STATEMENT_LIST | |
b9393656 DN |
317 | && (code == CASE_LABEL_EXPR |
318 | || code == DECL_EXPR | |
319 | || TREE_CODE_CLASS (code) != tcc_statement); | |
320 | } | |
321 | ||
155768d6 JH |
322 | /* Very rough estimate of streaming size of the initializer. If we ignored |
323 | presence of strings, we could simply just count number of non-indexable | |
324 | tree nodes and number of references to indexable nodes. Strings however | |
325 | may be very large and we do not want to dump them int othe global stream. | |
326 | ||
327 | Count the size of initializer until the size in DATA is positive. */ | |
328 | ||
329 | static tree | |
330 | subtract_estimated_size (tree *tp, int *ws, void *data) | |
331 | { | |
332 | long *sum = (long *)data; | |
333 | if (tree_is_indexable (*tp)) | |
334 | { | |
335 | /* Indexable tree is one reference to global stream. | |
336 | Guess it may be about 4 bytes. */ | |
337 | *sum -= 4; | |
338 | *ws = 0; | |
339 | } | |
340 | /* String table entry + base of tree node needs to be streamed. */ | |
341 | if (TREE_CODE (*tp) == STRING_CST) | |
342 | *sum -= TREE_STRING_LENGTH (*tp) + 8; | |
343 | else | |
344 | { | |
345 | /* Identifiers are also variable length but should not appear | |
346 | naked in constructor. */ | |
347 | gcc_checking_assert (TREE_CODE (*tp) != IDENTIFIER_NODE); | |
348 | /* We do not really make attempt to work out size of pickled tree, as | |
349 | it is very variable. Make it bigger than the reference. */ | |
350 | *sum -= 16; | |
351 | } | |
352 | if (*sum < 0) | |
353 | return *tp; | |
354 | return NULL_TREE; | |
355 | } | |
356 | ||
b9393656 | 357 | |
ee03e71d RB |
358 | /* For EXPR lookup and return what we want to stream to OB as DECL_INITIAL. */ |
359 | ||
360 | static tree | |
0b83e688 | 361 | get_symbol_initial_value (lto_symtab_encoder_t encoder, tree expr) |
ee03e71d RB |
362 | { |
363 | gcc_checking_assert (DECL_P (expr) | |
364 | && TREE_CODE (expr) != FUNCTION_DECL | |
365 | && TREE_CODE (expr) != TRANSLATION_UNIT_DECL); | |
366 | ||
367 | /* Handle DECL_INITIAL for symbols. */ | |
368 | tree initial = DECL_INITIAL (expr); | |
8813a647 | 369 | if (VAR_P (expr) |
ee03e71d RB |
370 | && (TREE_STATIC (expr) || DECL_EXTERNAL (expr)) |
371 | && !DECL_IN_CONSTANT_POOL (expr) | |
372 | && initial) | |
373 | { | |
2c8326a5 | 374 | varpool_node *vnode; |
0b83e688 JH |
375 | /* Extra section needs about 30 bytes; do not produce it for simple |
376 | scalar values. */ | |
155768d6 | 377 | if (!(vnode = varpool_node::get (expr)) |
0b83e688 JH |
378 | || !lto_symtab_encoder_encode_initializer_p (encoder, vnode)) |
379 | initial = error_mark_node; | |
155768d6 JH |
380 | if (initial != error_mark_node) |
381 | { | |
382 | long max_size = 30; | |
383 | if (walk_tree (&initial, subtract_estimated_size, (void *)&max_size, | |
384 | NULL)) | |
385 | initial = error_mark_node; | |
386 | } | |
ee03e71d RB |
387 | } |
388 | ||
389 | return initial; | |
390 | } | |
391 | ||
392 | ||
b9393656 DN |
393 | /* Write a physical representation of tree node EXPR to output block |
394 | OB. If REF_P is true, the leaves of EXPR are emitted as references | |
395 | via lto_output_tree_ref. IX is the index into the streamer cache | |
396 | where EXPR is stored. */ | |
397 | ||
398 | static void | |
ee03e71d | 399 | lto_write_tree_1 (struct output_block *ob, tree expr, bool ref_p) |
b9393656 | 400 | { |
b9393656 DN |
401 | /* Pack all the non-pointer fields in EXPR into a bitpack and write |
402 | the resulting bitpack. */ | |
b6bf201e | 403 | streamer_write_tree_bitfields (ob, expr); |
b9393656 DN |
404 | |
405 | /* Write all the pointer fields in EXPR. */ | |
412288f1 | 406 | streamer_write_tree_body (ob, expr, ref_p); |
b9393656 DN |
407 | |
408 | /* Write any LTO-specific data to OB. */ | |
409 | if (DECL_P (expr) | |
410 | && TREE_CODE (expr) != FUNCTION_DECL | |
411 | && TREE_CODE (expr) != TRANSLATION_UNIT_DECL) | |
412 | { | |
413 | /* Handle DECL_INITIAL for symbols. */ | |
0b83e688 JH |
414 | tree initial = get_symbol_initial_value |
415 | (ob->decl_state->symtab_node_encoder, expr); | |
b9393656 DN |
416 | stream_write_tree (ob, initial, ref_p); |
417 | } | |
1ea85365 RB |
418 | |
419 | /* Stream references to early generated DIEs. Keep in sync with the | |
420 | trees handled in dwarf2out_die_ref_for_decl. */ | |
421 | if ((DECL_P (expr) | |
422 | && TREE_CODE (expr) != FIELD_DECL | |
423 | && TREE_CODE (expr) != DEBUG_EXPR_DECL | |
424 | && TREE_CODE (expr) != TYPE_DECL) | |
425 | || TREE_CODE (expr) == BLOCK) | |
426 | { | |
427 | const char *sym; | |
428 | unsigned HOST_WIDE_INT off; | |
429 | if (debug_info_level > DINFO_LEVEL_NONE | |
430 | && debug_hooks->die_ref_for_decl (expr, &sym, &off)) | |
431 | { | |
432 | streamer_write_string (ob, ob->main_stream, sym, true); | |
433 | streamer_write_uhwi (ob, off); | |
434 | } | |
435 | else | |
436 | streamer_write_string (ob, ob->main_stream, NULL, true); | |
437 | } | |
ee03e71d RB |
438 | } |
439 | ||
440 | /* Write a physical representation of tree node EXPR to output block | |
441 | OB. If REF_P is true, the leaves of EXPR are emitted as references | |
442 | via lto_output_tree_ref. IX is the index into the streamer cache | |
443 | where EXPR is stored. */ | |
444 | ||
445 | static void | |
446 | lto_write_tree (struct output_block *ob, tree expr, bool ref_p) | |
447 | { | |
448 | if (!lto_is_streamable (expr)) | |
449 | internal_error ("tree code %qs is not supported in LTO streams", | |
5806f481 | 450 | get_tree_code_name (TREE_CODE (expr))); |
ee03e71d RB |
451 | |
452 | /* Write the header, containing everything needed to materialize | |
453 | EXPR on the reading side. */ | |
454 | streamer_write_tree_header (ob, expr); | |
455 | ||
456 | lto_write_tree_1 (ob, expr, ref_p); | |
b9393656 DN |
457 | |
458 | /* Mark the end of EXPR. */ | |
412288f1 | 459 | streamer_write_zero (ob); |
b9393656 DN |
460 | } |
461 | ||
cec34ee5 EB |
462 | /* Emit the physical representation of tree node EXPR to output block OB, |
463 | If THIS_REF_P is true, the leaves of EXPR are emitted as references via | |
464 | lto_output_tree_ref. REF_P is used for streaming siblings of EXPR. */ | |
ee03e71d RB |
465 | |
466 | static void | |
467 | lto_output_tree_1 (struct output_block *ob, tree expr, hashval_t hash, | |
468 | bool ref_p, bool this_ref_p) | |
469 | { | |
470 | unsigned ix; | |
471 | ||
472 | gcc_checking_assert (expr != NULL_TREE | |
473 | && !(this_ref_p && tree_is_indexable (expr))); | |
474 | ||
475 | bool exists_p = streamer_tree_cache_insert (ob->writer_cache, | |
476 | expr, hash, &ix); | |
477 | gcc_assert (!exists_p); | |
ea6e17d5 RB |
478 | if (TREE_CODE (expr) == INTEGER_CST |
479 | && !TREE_OVERFLOW (expr)) | |
ee03e71d RB |
480 | { |
481 | /* Shared INTEGER_CST nodes are special because they need their | |
482 | original type to be materialized by the reader (to implement | |
483 | TYPE_CACHED_VALUES). */ | |
484 | streamer_write_integer_cst (ob, expr, ref_p); | |
485 | } | |
486 | else | |
487 | { | |
488 | /* This is the first time we see EXPR, write its fields | |
489 | to OB. */ | |
490 | lto_write_tree (ob, expr, ref_p); | |
491 | } | |
492 | } | |
493 | ||
a4b0388b | 494 | class DFS |
ee03e71d | 495 | { |
a4b0388b JH |
496 | public: |
497 | DFS (struct output_block *ob, tree expr, bool ref_p, bool this_ref_p, | |
498 | bool single_p); | |
499 | ~DFS (); | |
500 | ||
501 | struct scc_entry | |
502 | { | |
503 | tree t; | |
504 | hashval_t hash; | |
505 | }; | |
506 | vec<scc_entry> sccstack; | |
507 | ||
508 | private: | |
509 | struct sccs | |
510 | { | |
511 | unsigned int dfsnum; | |
512 | unsigned int low; | |
513 | }; | |
bbf043c2 JJ |
514 | struct worklist |
515 | { | |
516 | tree expr; | |
517 | sccs *from_state; | |
518 | sccs *cstate; | |
519 | bool ref_p; | |
520 | bool this_ref_p; | |
521 | }; | |
a4b0388b JH |
522 | |
523 | static int scc_entry_compare (const void *, const void *); | |
524 | ||
525 | void DFS_write_tree_body (struct output_block *ob, | |
bbf043c2 | 526 | tree expr, sccs *expr_state, bool ref_p); |
a4b0388b JH |
527 | |
528 | void DFS_write_tree (struct output_block *ob, sccs *from_state, | |
bbf043c2 JJ |
529 | tree expr, bool ref_p, bool this_ref_p); |
530 | ||
a4b0388b | 531 | hashval_t |
cec34ee5 EB |
532 | hash_scc (struct output_block *ob, unsigned first, unsigned size, |
533 | bool ref_p, bool this_ref_p); | |
a4b0388b | 534 | |
39c8aaa4 | 535 | hash_map<tree, sccs *> sccstate; |
bbf043c2 | 536 | vec<worklist> worklist_vec; |
a4b0388b | 537 | struct obstack sccstate_obstack; |
ee03e71d RB |
538 | }; |
539 | ||
cec34ee5 EB |
540 | /* Emit the physical representation of tree node EXPR to output block OB, |
541 | using depth-first search on the subgraph. If THIS_REF_P is true, the | |
542 | leaves of EXPR are emitted as references via lto_output_tree_ref. | |
543 | REF_P is used for streaming siblings of EXPR. If SINGLE_P is true, | |
544 | this is for a rewalk of a single leaf SCC. */ | |
545 | ||
a4b0388b JH |
546 | DFS::DFS (struct output_block *ob, tree expr, bool ref_p, bool this_ref_p, |
547 | bool single_p) | |
ee03e71d | 548 | { |
bbf043c2 | 549 | unsigned int next_dfs_num = 1; |
a4b0388b | 550 | sccstack.create (0); |
a4b0388b | 551 | gcc_obstack_init (&sccstate_obstack); |
bbf043c2 JJ |
552 | worklist_vec = vNULL; |
553 | DFS_write_tree (ob, NULL, expr, ref_p, this_ref_p); | |
554 | while (!worklist_vec.is_empty ()) | |
555 | { | |
556 | worklist &w = worklist_vec.last (); | |
557 | expr = w.expr; | |
558 | sccs *from_state = w.from_state; | |
559 | sccs *cstate = w.cstate; | |
560 | ref_p = w.ref_p; | |
561 | this_ref_p = w.this_ref_p; | |
562 | if (cstate == NULL) | |
563 | { | |
564 | sccs **slot = &sccstate.get_or_insert (expr); | |
565 | cstate = *slot; | |
566 | if (cstate) | |
567 | { | |
568 | gcc_checking_assert (from_state); | |
569 | if (cstate->dfsnum < from_state->dfsnum) | |
570 | from_state->low = MIN (cstate->dfsnum, from_state->low); | |
571 | worklist_vec.pop (); | |
572 | continue; | |
573 | } | |
574 | ||
575 | scc_entry e = { expr, 0 }; | |
576 | /* Not yet visited. DFS recurse and push it onto the stack. */ | |
577 | *slot = cstate = XOBNEW (&sccstate_obstack, struct sccs); | |
578 | sccstack.safe_push (e); | |
579 | cstate->dfsnum = next_dfs_num++; | |
580 | cstate->low = cstate->dfsnum; | |
581 | w.cstate = cstate; | |
582 | ||
ea6e17d5 RB |
583 | if (TREE_CODE (expr) == INTEGER_CST |
584 | && !TREE_OVERFLOW (expr)) | |
bbf043c2 JJ |
585 | DFS_write_tree (ob, cstate, TREE_TYPE (expr), ref_p, ref_p); |
586 | else | |
587 | { | |
588 | DFS_write_tree_body (ob, expr, cstate, ref_p); | |
589 | ||
590 | /* Walk any LTO-specific edges. */ | |
591 | if (DECL_P (expr) | |
592 | && TREE_CODE (expr) != FUNCTION_DECL | |
593 | && TREE_CODE (expr) != TRANSLATION_UNIT_DECL) | |
594 | { | |
595 | /* Handle DECL_INITIAL for symbols. */ | |
596 | tree initial | |
597 | = get_symbol_initial_value (ob->decl_state->symtab_node_encoder, | |
598 | expr); | |
599 | DFS_write_tree (ob, cstate, initial, ref_p, ref_p); | |
600 | } | |
601 | } | |
602 | continue; | |
603 | } | |
604 | ||
605 | /* See if we found an SCC. */ | |
606 | if (cstate->low == cstate->dfsnum) | |
607 | { | |
608 | unsigned first, size; | |
609 | tree x; | |
610 | ||
cec34ee5 | 611 | /* If we are re-walking a single leaf SCC just pop it, |
bbf043c2 JJ |
612 | let earlier worklist item access the sccstack. */ |
613 | if (single_p) | |
614 | { | |
615 | worklist_vec.pop (); | |
616 | continue; | |
617 | } | |
618 | ||
619 | /* Pop the SCC and compute its size. */ | |
620 | first = sccstack.length (); | |
621 | do | |
622 | { | |
623 | x = sccstack[--first].t; | |
624 | } | |
625 | while (x != expr); | |
626 | size = sccstack.length () - first; | |
627 | ||
628 | /* No need to compute hashes for LTRANS units, we don't perform | |
629 | any merging there. */ | |
630 | hashval_t scc_hash = 0; | |
631 | unsigned scc_entry_len = 0; | |
632 | if (!flag_wpa) | |
633 | { | |
cec34ee5 | 634 | scc_hash = hash_scc (ob, first, size, ref_p, this_ref_p); |
bbf043c2 JJ |
635 | |
636 | /* Put the entries with the least number of collisions first. */ | |
637 | unsigned entry_start = 0; | |
638 | scc_entry_len = size + 1; | |
639 | for (unsigned i = 0; i < size;) | |
640 | { | |
641 | unsigned from = i; | |
642 | for (i = i + 1; i < size | |
643 | && (sccstack[first + i].hash | |
644 | == sccstack[first + from].hash); ++i) | |
645 | ; | |
646 | if (i - from < scc_entry_len) | |
647 | { | |
648 | scc_entry_len = i - from; | |
649 | entry_start = from; | |
650 | } | |
651 | } | |
652 | for (unsigned i = 0; i < scc_entry_len; ++i) | |
6b4db501 MM |
653 | std::swap (sccstack[first + i], |
654 | sccstack[first + entry_start + i]); | |
bbf043c2 | 655 | |
b2b29377 MM |
656 | /* We already sorted SCC deterministically in hash_scc. */ |
657 | ||
658 | /* Check that we have only one SCC. | |
659 | Naturally we may have conflicts if hash function is not | |
660 | strong enough. Lets see how far this gets. */ | |
661 | gcc_checking_assert (scc_entry_len == 1); | |
bbf043c2 JJ |
662 | } |
663 | ||
664 | /* Write LTO_tree_scc. */ | |
665 | streamer_write_record_start (ob, LTO_tree_scc); | |
666 | streamer_write_uhwi (ob, size); | |
667 | streamer_write_uhwi (ob, scc_hash); | |
668 | ||
669 | /* Write size-1 SCCs without wrapping them inside SCC bundles. | |
670 | All INTEGER_CSTs need to be handled this way as we need | |
671 | their type to materialize them. Also builtins are handled | |
672 | this way. | |
673 | ??? We still wrap these in LTO_tree_scc so at the | |
674 | input side we can properly identify the tree we want | |
675 | to ultimatively return. */ | |
676 | if (size == 1) | |
677 | lto_output_tree_1 (ob, expr, scc_hash, ref_p, this_ref_p); | |
678 | else | |
679 | { | |
680 | /* Write the size of the SCC entry candidates. */ | |
681 | streamer_write_uhwi (ob, scc_entry_len); | |
682 | ||
683 | /* Write all headers and populate the streamer cache. */ | |
684 | for (unsigned i = 0; i < size; ++i) | |
685 | { | |
686 | hashval_t hash = sccstack[first+i].hash; | |
687 | tree t = sccstack[first+i].t; | |
688 | bool exists_p = streamer_tree_cache_insert (ob->writer_cache, | |
689 | t, hash, NULL); | |
690 | gcc_assert (!exists_p); | |
691 | ||
692 | if (!lto_is_streamable (t)) | |
693 | internal_error ("tree code %qs is not supported " | |
694 | "in LTO streams", | |
695 | get_tree_code_name (TREE_CODE (t))); | |
696 | ||
bbf043c2 JJ |
697 | /* Write the header, containing everything needed to |
698 | materialize EXPR on the reading side. */ | |
699 | streamer_write_tree_header (ob, t); | |
700 | } | |
701 | ||
702 | /* Write the bitpacks and tree references. */ | |
703 | for (unsigned i = 0; i < size; ++i) | |
704 | { | |
705 | lto_write_tree_1 (ob, sccstack[first+i].t, ref_p); | |
706 | ||
707 | /* Mark the end of the tree. */ | |
708 | streamer_write_zero (ob); | |
709 | } | |
710 | } | |
711 | ||
712 | /* Finally truncate the vector. */ | |
713 | sccstack.truncate (first); | |
714 | ||
715 | if (from_state) | |
716 | from_state->low = MIN (from_state->low, cstate->low); | |
717 | worklist_vec.pop (); | |
718 | continue; | |
719 | } | |
720 | ||
721 | gcc_checking_assert (from_state); | |
722 | from_state->low = MIN (from_state->low, cstate->low); | |
723 | if (cstate->dfsnum < from_state->dfsnum) | |
724 | from_state->low = MIN (cstate->dfsnum, from_state->low); | |
725 | worklist_vec.pop (); | |
726 | } | |
727 | worklist_vec.release (); | |
a4b0388b | 728 | } |
ee03e71d | 729 | |
a4b0388b JH |
730 | DFS::~DFS () |
731 | { | |
732 | sccstack.release (); | |
a4b0388b JH |
733 | obstack_free (&sccstate_obstack, NULL); |
734 | } | |
ee03e71d RB |
735 | |
736 | /* Handle the tree EXPR in the DFS walk with SCC state EXPR_STATE and | |
737 | DFS recurse for all tree edges originating from it. */ | |
738 | ||
a4b0388b JH |
739 | void |
740 | DFS::DFS_write_tree_body (struct output_block *ob, | |
bbf043c2 | 741 | tree expr, sccs *expr_state, bool ref_p) |
ee03e71d RB |
742 | { |
743 | #define DFS_follow_tree_edge(DEST) \ | |
bbf043c2 | 744 | DFS_write_tree (ob, expr_state, DEST, ref_p, ref_p) |
ee03e71d RB |
745 | |
746 | enum tree_code code; | |
747 | ||
b4da704c JH |
748 | if (streamer_dump_file) |
749 | { | |
750 | print_node_brief (streamer_dump_file, " Streaming ", | |
751 | expr, 4); | |
752 | fprintf (streamer_dump_file, " to %s\n", | |
753 | lto_section_name [ob->section_type]); | |
754 | } | |
755 | ||
ee03e71d RB |
756 | code = TREE_CODE (expr); |
757 | ||
758 | if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) | |
759 | { | |
760 | if (TREE_CODE (expr) != IDENTIFIER_NODE) | |
761 | DFS_follow_tree_edge (TREE_TYPE (expr)); | |
762 | } | |
763 | ||
764 | if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) | |
765 | { | |
734914b6 RS |
766 | unsigned int count = vector_cst_encoded_nelts (expr); |
767 | for (unsigned int i = 0; i < count; ++i) | |
768 | DFS_follow_tree_edge (VECTOR_CST_ENCODED_ELT (expr, i)); | |
ee03e71d RB |
769 | } |
770 | ||
36fd6408 RS |
771 | if (CODE_CONTAINS_STRUCT (code, TS_POLY_INT_CST)) |
772 | for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i) | |
773 | DFS_follow_tree_edge (POLY_INT_CST_COEFF (expr, i)); | |
774 | ||
ee03e71d RB |
775 | if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) |
776 | { | |
777 | DFS_follow_tree_edge (TREE_REALPART (expr)); | |
778 | DFS_follow_tree_edge (TREE_IMAGPART (expr)); | |
779 | } | |
780 | ||
781 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) | |
782 | { | |
783 | /* Drop names that were created for anonymous entities. */ | |
784 | if (DECL_NAME (expr) | |
785 | && TREE_CODE (DECL_NAME (expr)) == IDENTIFIER_NODE | |
ee47f74e | 786 | && anon_aggrname_p (DECL_NAME (expr))) |
ee03e71d RB |
787 | ; |
788 | else | |
789 | DFS_follow_tree_edge (DECL_NAME (expr)); | |
1ea85365 RB |
790 | if (TREE_CODE (expr) != TRANSLATION_UNIT_DECL |
791 | && ! DECL_CONTEXT (expr)) | |
792 | DFS_follow_tree_edge ((*all_translation_units)[0]); | |
793 | else | |
794 | DFS_follow_tree_edge (DECL_CONTEXT (expr)); | |
ee03e71d RB |
795 | } |
796 | ||
797 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
798 | { | |
799 | DFS_follow_tree_edge (DECL_SIZE (expr)); | |
800 | DFS_follow_tree_edge (DECL_SIZE_UNIT (expr)); | |
801 | ||
802 | /* Note, DECL_INITIAL is not handled here. Since DECL_INITIAL needs | |
803 | special handling in LTO, it must be handled by streamer hooks. */ | |
804 | ||
805 | DFS_follow_tree_edge (DECL_ATTRIBUTES (expr)); | |
806 | ||
f5fe239e | 807 | /* We use DECL_ABSTRACT_ORIGIN == error_mark_node to mark |
6b9ac179 JH |
808 | declarations which should be eliminated by decl merging. Be sure none |
809 | leaks to this point. */ | |
810 | gcc_assert (DECL_ABSTRACT_ORIGIN (expr) != error_mark_node); | |
1ea85365 | 811 | DFS_follow_tree_edge (DECL_ABSTRACT_ORIGIN (expr)); |
ee03e71d | 812 | |
8813a647 | 813 | if ((VAR_P (expr) |
ee03e71d RB |
814 | || TREE_CODE (expr) == PARM_DECL) |
815 | && DECL_HAS_VALUE_EXPR_P (expr)) | |
816 | DFS_follow_tree_edge (DECL_VALUE_EXPR (expr)); | |
c1a7ca7c RB |
817 | if (VAR_P (expr) |
818 | && DECL_HAS_DEBUG_EXPR_P (expr)) | |
ee03e71d RB |
819 | DFS_follow_tree_edge (DECL_DEBUG_EXPR (expr)); |
820 | } | |
821 | ||
ee03e71d RB |
822 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) |
823 | { | |
824 | /* Make sure we don't inadvertently set the assembler name. */ | |
825 | if (DECL_ASSEMBLER_NAME_SET_P (expr)) | |
826 | DFS_follow_tree_edge (DECL_ASSEMBLER_NAME (expr)); | |
ee03e71d RB |
827 | } |
828 | ||
829 | if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) | |
830 | { | |
831 | DFS_follow_tree_edge (DECL_FIELD_OFFSET (expr)); | |
832 | DFS_follow_tree_edge (DECL_BIT_FIELD_TYPE (expr)); | |
833 | DFS_follow_tree_edge (DECL_BIT_FIELD_REPRESENTATIVE (expr)); | |
834 | DFS_follow_tree_edge (DECL_FIELD_BIT_OFFSET (expr)); | |
d5cbbf87 | 835 | gcc_checking_assert (!DECL_FCONTEXT (expr)); |
ee03e71d RB |
836 | } |
837 | ||
838 | if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
839 | { | |
28428506 | 840 | gcc_checking_assert (DECL_VINDEX (expr) == NULL); |
ee03e71d | 841 | DFS_follow_tree_edge (DECL_FUNCTION_PERSONALITY (expr)); |
325fe981 | 842 | DFS_follow_tree_edge (DECL_FUNCTION_SPECIFIC_TARGET (expr)); |
ee03e71d RB |
843 | DFS_follow_tree_edge (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr)); |
844 | } | |
845 | ||
846 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
847 | { | |
848 | DFS_follow_tree_edge (TYPE_SIZE (expr)); | |
849 | DFS_follow_tree_edge (TYPE_SIZE_UNIT (expr)); | |
850 | DFS_follow_tree_edge (TYPE_ATTRIBUTES (expr)); | |
851 | DFS_follow_tree_edge (TYPE_NAME (expr)); | |
852 | /* Do not follow TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be | |
853 | reconstructed during fixup. */ | |
854 | /* Do not follow TYPE_NEXT_VARIANT, we reconstruct the variant lists | |
855 | during fixup. */ | |
856 | DFS_follow_tree_edge (TYPE_MAIN_VARIANT (expr)); | |
857 | DFS_follow_tree_edge (TYPE_CONTEXT (expr)); | |
858 | /* TYPE_CANONICAL is re-computed during type merging, so no need | |
859 | to follow it here. */ | |
2ebbdb6c JH |
860 | /* Do not stream TYPE_STUB_DECL; it is not needed by LTO but currently |
861 | it can not be freed by free_lang_data without triggering ICEs in | |
862 | langhooks. */ | |
ee03e71d RB |
863 | } |
864 | ||
865 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) | |
866 | { | |
867 | if (TREE_CODE (expr) == ENUMERAL_TYPE) | |
868 | DFS_follow_tree_edge (TYPE_VALUES (expr)); | |
869 | else if (TREE_CODE (expr) == ARRAY_TYPE) | |
870 | DFS_follow_tree_edge (TYPE_DOMAIN (expr)); | |
871 | else if (RECORD_OR_UNION_TYPE_P (expr)) | |
872 | for (tree t = TYPE_FIELDS (expr); t; t = TREE_CHAIN (t)) | |
873 | DFS_follow_tree_edge (t); | |
874 | else if (TREE_CODE (expr) == FUNCTION_TYPE | |
875 | || TREE_CODE (expr) == METHOD_TYPE) | |
876 | DFS_follow_tree_edge (TYPE_ARG_TYPES (expr)); | |
877 | ||
878 | if (!POINTER_TYPE_P (expr)) | |
20deef65 NS |
879 | DFS_follow_tree_edge (TYPE_MIN_VALUE_RAW (expr)); |
880 | DFS_follow_tree_edge (TYPE_MAX_VALUE_RAW (expr)); | |
ee03e71d RB |
881 | } |
882 | ||
883 | if (CODE_CONTAINS_STRUCT (code, TS_LIST)) | |
884 | { | |
885 | DFS_follow_tree_edge (TREE_PURPOSE (expr)); | |
886 | DFS_follow_tree_edge (TREE_VALUE (expr)); | |
887 | DFS_follow_tree_edge (TREE_CHAIN (expr)); | |
888 | } | |
889 | ||
890 | if (CODE_CONTAINS_STRUCT (code, TS_VEC)) | |
891 | { | |
892 | for (int i = 0; i < TREE_VEC_LENGTH (expr); i++) | |
893 | DFS_follow_tree_edge (TREE_VEC_ELT (expr, i)); | |
894 | } | |
895 | ||
896 | if (CODE_CONTAINS_STRUCT (code, TS_EXP)) | |
897 | { | |
898 | for (int i = 0; i < TREE_OPERAND_LENGTH (expr); i++) | |
899 | DFS_follow_tree_edge (TREE_OPERAND (expr, i)); | |
900 | DFS_follow_tree_edge (TREE_BLOCK (expr)); | |
901 | } | |
902 | ||
903 | if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) | |
904 | { | |
905 | for (tree t = BLOCK_VARS (expr); t; t = TREE_CHAIN (t)) | |
69e02b35 JH |
906 | { |
907 | /* We would have to stream externals in the block chain as | |
908 | non-references but we should have dropped them in | |
909 | free-lang-data. */ | |
910 | gcc_assert (!VAR_OR_FUNCTION_DECL_P (t) || !DECL_EXTERNAL (t)); | |
ee03e71d | 911 | DFS_follow_tree_edge (t); |
69e02b35 | 912 | } |
ee03e71d RB |
913 | |
914 | DFS_follow_tree_edge (BLOCK_SUPERCONTEXT (expr)); | |
f5fe239e | 915 | DFS_follow_tree_edge (BLOCK_ABSTRACT_ORIGIN (expr)); |
ee03e71d | 916 | |
ee03e71d RB |
917 | /* Do not follow BLOCK_NONLOCALIZED_VARS. We cannot handle debug |
918 | information for early inlined BLOCKs so drop it on the floor instead | |
919 | of ICEing in dwarf2out.c. */ | |
920 | ||
921 | /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO | |
922 | streaming time. */ | |
923 | ||
924 | /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this | |
925 | list is re-constructed from BLOCK_SUPERCONTEXT. */ | |
926 | } | |
927 | ||
928 | if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) | |
929 | { | |
930 | unsigned i; | |
931 | tree t; | |
932 | ||
933 | /* Note that the number of BINFO slots has already been emitted in | |
934 | EXPR's header (see streamer_write_tree_header) because this length | |
935 | is needed to build the empty BINFO node on the reader side. */ | |
936 | FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (expr), i, t) | |
937 | DFS_follow_tree_edge (t); | |
938 | DFS_follow_tree_edge (BINFO_OFFSET (expr)); | |
939 | DFS_follow_tree_edge (BINFO_VTABLE (expr)); | |
ee03e71d | 940 | |
0c172706 JH |
941 | /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX, |
942 | BINFO_BASE_ACCESSES and BINFO_VPTR_INDEX; these are used | |
943 | by C++ FE only. */ | |
ee03e71d RB |
944 | } |
945 | ||
946 | if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) | |
947 | { | |
948 | unsigned i; | |
949 | tree index, value; | |
950 | ||
951 | FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value) | |
952 | { | |
953 | DFS_follow_tree_edge (index); | |
954 | DFS_follow_tree_edge (value); | |
955 | } | |
956 | } | |
957 | ||
c193f58b JJ |
958 | if (code == OMP_CLAUSE) |
959 | { | |
960 | int i; | |
961 | for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++) | |
962 | DFS_follow_tree_edge (OMP_CLAUSE_OPERAND (expr, i)); | |
963 | DFS_follow_tree_edge (OMP_CLAUSE_CHAIN (expr)); | |
964 | } | |
965 | ||
ee03e71d RB |
966 | #undef DFS_follow_tree_edge |
967 | } | |
968 | ||
a4b0388b JH |
969 | /* Return a hash value for the tree T. |
970 | CACHE holds hash values of trees outside current SCC. MAP, if non-NULL, | |
971 | may hold hash values if trees inside current SCC. */ | |
ee03e71d RB |
972 | |
973 | static hashval_t | |
a4b0388b | 974 | hash_tree (struct streamer_tree_cache_d *cache, hash_map<tree, hashval_t> *map, tree t) |
ee03e71d | 975 | { |
50de5793 | 976 | inchash::hash hstate; |
e8326772 | 977 | |
ee03e71d RB |
978 | #define visit(SIBLING) \ |
979 | do { \ | |
980 | unsigned ix; \ | |
a4b0388b JH |
981 | if (!SIBLING) \ |
982 | hstate.add_int (0); \ | |
983 | else if (streamer_tree_cache_lookup (cache, SIBLING, &ix)) \ | |
e8326772 | 984 | hstate.add_int (streamer_tree_cache_get_hash (cache, ix)); \ |
a4b0388b JH |
985 | else if (map) \ |
986 | hstate.add_int (*map->get (SIBLING)); \ | |
987 | else \ | |
988 | hstate.add_int (1); \ | |
ee03e71d RB |
989 | } while (0) |
990 | ||
991 | /* Hash TS_BASE. */ | |
992 | enum tree_code code = TREE_CODE (t); | |
e8326772 | 993 | hstate.add_int (code); |
ee03e71d RB |
994 | if (!TYPE_P (t)) |
995 | { | |
e8326772 AK |
996 | hstate.add_flag (TREE_SIDE_EFFECTS (t)); |
997 | hstate.add_flag (TREE_CONSTANT (t)); | |
998 | hstate.add_flag (TREE_READONLY (t)); | |
999 | hstate.add_flag (TREE_PUBLIC (t)); | |
ee03e71d | 1000 | } |
e8326772 AK |
1001 | hstate.add_flag (TREE_ADDRESSABLE (t)); |
1002 | hstate.add_flag (TREE_THIS_VOLATILE (t)); | |
ee03e71d | 1003 | if (DECL_P (t)) |
e8326772 | 1004 | hstate.add_flag (DECL_UNSIGNED (t)); |
ee03e71d | 1005 | else if (TYPE_P (t)) |
e8326772 | 1006 | hstate.add_flag (TYPE_UNSIGNED (t)); |
ee03e71d | 1007 | if (TYPE_P (t)) |
e8326772 | 1008 | hstate.add_flag (TYPE_ARTIFICIAL (t)); |
ee03e71d | 1009 | else |
e8326772 AK |
1010 | hstate.add_flag (TREE_NO_WARNING (t)); |
1011 | hstate.add_flag (TREE_NOTHROW (t)); | |
1012 | hstate.add_flag (TREE_STATIC (t)); | |
1013 | hstate.add_flag (TREE_PROTECTED (t)); | |
1014 | hstate.add_flag (TREE_DEPRECATED (t)); | |
ee03e71d | 1015 | if (code != TREE_BINFO) |
e8326772 | 1016 | hstate.add_flag (TREE_PRIVATE (t)); |
ee03e71d | 1017 | if (TYPE_P (t)) |
e8326772 | 1018 | { |
ee45a32d EB |
1019 | hstate.add_flag (AGGREGATE_TYPE_P (t) |
1020 | ? TYPE_REVERSE_STORAGE_ORDER (t) : TYPE_SATURATING (t)); | |
e8326772 AK |
1021 | hstate.add_flag (TYPE_ADDR_SPACE (t)); |
1022 | } | |
ee03e71d | 1023 | else if (code == SSA_NAME) |
e8326772 AK |
1024 | hstate.add_flag (SSA_NAME_IS_DEFAULT_DEF (t)); |
1025 | hstate.commit_flag (); | |
ee03e71d RB |
1026 | |
1027 | if (CODE_CONTAINS_STRUCT (code, TS_INT_CST)) | |
cae115d6 | 1028 | hstate.add_wide_int (wi::to_widest (t)); |
ee03e71d RB |
1029 | |
1030 | if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST)) | |
1031 | { | |
1032 | REAL_VALUE_TYPE r = TREE_REAL_CST (t); | |
e8326772 AK |
1033 | hstate.add_flag (r.cl); |
1034 | hstate.add_flag (r.sign); | |
1035 | hstate.add_flag (r.signalling); | |
1036 | hstate.add_flag (r.canonical); | |
1037 | hstate.commit_flag (); | |
1038 | hstate.add_int (r.uexp); | |
1039 | hstate.add (r.sig, sizeof (r.sig)); | |
ee03e71d RB |
1040 | } |
1041 | ||
1042 | if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST)) | |
1043 | { | |
1044 | FIXED_VALUE_TYPE f = TREE_FIXED_CST (t); | |
e8326772 AK |
1045 | hstate.add_int (f.mode); |
1046 | hstate.add_int (f.data.low); | |
1047 | hstate.add_int (f.data.high); | |
ee03e71d RB |
1048 | } |
1049 | ||
1050 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
1051 | { | |
449e9a33 | 1052 | hstate.add_hwi (DECL_MODE (t)); |
e8326772 AK |
1053 | hstate.add_flag (DECL_NONLOCAL (t)); |
1054 | hstate.add_flag (DECL_VIRTUAL_P (t)); | |
1055 | hstate.add_flag (DECL_IGNORED_P (t)); | |
00de328a | 1056 | hstate.add_flag (DECL_ABSTRACT_P (t)); |
e8326772 AK |
1057 | hstate.add_flag (DECL_ARTIFICIAL (t)); |
1058 | hstate.add_flag (DECL_USER_ALIGN (t)); | |
1059 | hstate.add_flag (DECL_PRESERVE_P (t)); | |
1060 | hstate.add_flag (DECL_EXTERNAL (t)); | |
1061 | hstate.add_flag (DECL_GIMPLE_REG_P (t)); | |
1062 | hstate.commit_flag (); | |
1063 | hstate.add_int (DECL_ALIGN (t)); | |
ee03e71d RB |
1064 | if (code == LABEL_DECL) |
1065 | { | |
e8326772 AK |
1066 | hstate.add_int (EH_LANDING_PAD_NR (t)); |
1067 | hstate.add_int (LABEL_DECL_UID (t)); | |
ee03e71d RB |
1068 | } |
1069 | else if (code == FIELD_DECL) | |
1070 | { | |
e8326772 AK |
1071 | hstate.add_flag (DECL_PACKED (t)); |
1072 | hstate.add_flag (DECL_NONADDRESSABLE_P (t)); | |
974aedcc | 1073 | hstate.add_flag (DECL_PADDING_P (t)); |
e8326772 | 1074 | hstate.add_int (DECL_OFFSET_ALIGN (t)); |
ee03e71d RB |
1075 | } |
1076 | else if (code == VAR_DECL) | |
1077 | { | |
e8326772 AK |
1078 | hstate.add_flag (DECL_HAS_DEBUG_EXPR_P (t)); |
1079 | hstate.add_flag (DECL_NONLOCAL_FRAME (t)); | |
ee03e71d RB |
1080 | } |
1081 | if (code == RESULT_DECL | |
1082 | || code == PARM_DECL | |
1083 | || code == VAR_DECL) | |
1084 | { | |
e8326772 | 1085 | hstate.add_flag (DECL_BY_REFERENCE (t)); |
ee03e71d RB |
1086 | if (code == VAR_DECL |
1087 | || code == PARM_DECL) | |
e8326772 | 1088 | hstate.add_flag (DECL_HAS_VALUE_EXPR_P (t)); |
ee03e71d | 1089 | } |
e8326772 | 1090 | hstate.commit_flag (); |
ee03e71d RB |
1091 | } |
1092 | ||
1093 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL)) | |
e8326772 | 1094 | hstate.add_int (DECL_REGISTER (t)); |
ee03e71d RB |
1095 | |
1096 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
1097 | { | |
e8326772 AK |
1098 | hstate.add_flag (DECL_COMMON (t)); |
1099 | hstate.add_flag (DECL_DLLIMPORT_P (t)); | |
1100 | hstate.add_flag (DECL_WEAK (t)); | |
1101 | hstate.add_flag (DECL_SEEN_IN_BIND_EXPR_P (t)); | |
1102 | hstate.add_flag (DECL_COMDAT (t)); | |
1103 | hstate.add_flag (DECL_VISIBILITY_SPECIFIED (t)); | |
1104 | hstate.add_int (DECL_VISIBILITY (t)); | |
ee03e71d RB |
1105 | if (code == VAR_DECL) |
1106 | { | |
c01c111b | 1107 | /* DECL_IN_TEXT_SECTION is set during final asm output only. */ |
e8326772 AK |
1108 | hstate.add_flag (DECL_HARD_REGISTER (t)); |
1109 | hstate.add_flag (DECL_IN_CONSTANT_POOL (t)); | |
ee03e71d | 1110 | } |
0170f33c | 1111 | if (TREE_CODE (t) == FUNCTION_DECL) |
e8326772 AK |
1112 | { |
1113 | hstate.add_flag (DECL_FINAL_P (t)); | |
1114 | hstate.add_flag (DECL_CXX_CONSTRUCTOR_P (t)); | |
1115 | hstate.add_flag (DECL_CXX_DESTRUCTOR_P (t)); | |
1116 | } | |
1117 | hstate.commit_flag (); | |
ee03e71d RB |
1118 | } |
1119 | ||
1120 | if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
1121 | { | |
e8326772 AK |
1122 | hstate.add_int (DECL_BUILT_IN_CLASS (t)); |
1123 | hstate.add_flag (DECL_STATIC_CONSTRUCTOR (t)); | |
1124 | hstate.add_flag (DECL_STATIC_DESTRUCTOR (t)); | |
1125 | hstate.add_flag (DECL_UNINLINABLE (t)); | |
1126 | hstate.add_flag (DECL_POSSIBLY_INLINED (t)); | |
1127 | hstate.add_flag (DECL_IS_NOVOPS (t)); | |
1128 | hstate.add_flag (DECL_IS_RETURNS_TWICE (t)); | |
1129 | hstate.add_flag (DECL_IS_MALLOC (t)); | |
1130 | hstate.add_flag (DECL_IS_OPERATOR_NEW (t)); | |
1131 | hstate.add_flag (DECL_DECLARED_INLINE_P (t)); | |
1132 | hstate.add_flag (DECL_STATIC_CHAIN (t)); | |
1133 | hstate.add_flag (DECL_NO_INLINE_WARNING_P (t)); | |
1134 | hstate.add_flag (DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (t)); | |
1135 | hstate.add_flag (DECL_NO_LIMIT_STACK (t)); | |
1136 | hstate.add_flag (DECL_DISREGARD_INLINE_LIMITS (t)); | |
1137 | hstate.add_flag (DECL_PURE_P (t)); | |
1138 | hstate.add_flag (DECL_LOOPING_CONST_OR_PURE_P (t)); | |
1139 | hstate.commit_flag (); | |
ee03e71d | 1140 | if (DECL_BUILT_IN_CLASS (t) != NOT_BUILT_IN) |
e8326772 | 1141 | hstate.add_int (DECL_FUNCTION_CODE (t)); |
ee03e71d RB |
1142 | } |
1143 | ||
1144 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
1145 | { | |
449e9a33 | 1146 | hstate.add_hwi (TYPE_MODE (t)); |
e8326772 | 1147 | hstate.add_flag (TYPE_STRING_FLAG (t)); |
351d90f4 JH |
1148 | /* TYPE_NO_FORCE_BLK is private to stor-layout and need |
1149 | no streaming. */ | |
e8326772 AK |
1150 | hstate.add_flag (TYPE_NEEDS_CONSTRUCTING (t)); |
1151 | hstate.add_flag (TYPE_PACKED (t)); | |
1152 | hstate.add_flag (TYPE_RESTRICT (t)); | |
1153 | hstate.add_flag (TYPE_USER_ALIGN (t)); | |
1154 | hstate.add_flag (TYPE_READONLY (t)); | |
ee03e71d | 1155 | if (RECORD_OR_UNION_TYPE_P (t)) |
0170f33c | 1156 | { |
e8326772 AK |
1157 | hstate.add_flag (TYPE_TRANSPARENT_AGGR (t)); |
1158 | hstate.add_flag (TYPE_FINAL_P (t)); | |
0170f33c | 1159 | } |
ee03e71d | 1160 | else if (code == ARRAY_TYPE) |
e8326772 | 1161 | hstate.add_flag (TYPE_NONALIASED_COMPONENT (t)); |
350792ff RB |
1162 | if (AGGREGATE_TYPE_P (t)) |
1163 | hstate.add_flag (TYPE_TYPELESS_STORAGE (t)); | |
e8326772 AK |
1164 | hstate.commit_flag (); |
1165 | hstate.add_int (TYPE_PRECISION (t)); | |
1166 | hstate.add_int (TYPE_ALIGN (t)); | |
974aedcc | 1167 | hstate.add_int (TYPE_EMPTY_P (t)); |
ee03e71d RB |
1168 | } |
1169 | ||
1170 | if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) | |
e8326772 AK |
1171 | hstate.add (TRANSLATION_UNIT_LANGUAGE (t), |
1172 | strlen (TRANSLATION_UNIT_LANGUAGE (t))); | |
ee03e71d | 1173 | |
1b34e6e2 BS |
1174 | if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION) |
1175 | /* We don't stream these when passing things to a different target. */ | |
1176 | && !lto_stream_offload_p) | |
449e9a33 | 1177 | hstate.add_hwi (cl_target_option_hash (TREE_TARGET_OPTION (t))); |
ee03e71d RB |
1178 | |
1179 | if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION)) | |
449e9a33 | 1180 | hstate.add_hwi (cl_optimization_hash (TREE_OPTIMIZATION (t))); |
ee03e71d RB |
1181 | |
1182 | if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER)) | |
e8326772 | 1183 | hstate.merge_hash (IDENTIFIER_HASH_VALUE (t)); |
ee03e71d RB |
1184 | |
1185 | if (CODE_CONTAINS_STRUCT (code, TS_STRING)) | |
e8326772 | 1186 | hstate.add (TREE_STRING_POINTER (t), TREE_STRING_LENGTH (t)); |
ee03e71d RB |
1187 | |
1188 | if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) | |
1189 | { | |
a4b0388b | 1190 | if (code != IDENTIFIER_NODE) |
ee03e71d RB |
1191 | visit (TREE_TYPE (t)); |
1192 | } | |
1193 | ||
1194 | if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) | |
734914b6 RS |
1195 | { |
1196 | unsigned int count = vector_cst_encoded_nelts (t); | |
1197 | for (unsigned int i = 0; i < count; ++i) | |
1198 | visit (VECTOR_CST_ENCODED_ELT (t, i)); | |
1199 | } | |
ee03e71d | 1200 | |
36fd6408 RS |
1201 | if (CODE_CONTAINS_STRUCT (code, TS_POLY_INT_CST)) |
1202 | for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i) | |
1203 | visit (POLY_INT_CST_COEFF (t, i)); | |
1204 | ||
ee03e71d RB |
1205 | if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) |
1206 | { | |
1207 | visit (TREE_REALPART (t)); | |
1208 | visit (TREE_IMAGPART (t)); | |
1209 | } | |
1210 | ||
1211 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) | |
1212 | { | |
1213 | /* Drop names that were created for anonymous entities. */ | |
1214 | if (DECL_NAME (t) | |
1215 | && TREE_CODE (DECL_NAME (t)) == IDENTIFIER_NODE | |
ee47f74e | 1216 | && anon_aggrname_p (DECL_NAME (t))) |
ee03e71d RB |
1217 | ; |
1218 | else | |
1219 | visit (DECL_NAME (t)); | |
1220 | if (DECL_FILE_SCOPE_P (t)) | |
1221 | ; | |
1222 | else | |
1223 | visit (DECL_CONTEXT (t)); | |
1224 | } | |
1225 | ||
1226 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
1227 | { | |
1228 | visit (DECL_SIZE (t)); | |
1229 | visit (DECL_SIZE_UNIT (t)); | |
1230 | visit (DECL_ATTRIBUTES (t)); | |
1231 | if ((code == VAR_DECL | |
1232 | || code == PARM_DECL) | |
1233 | && DECL_HAS_VALUE_EXPR_P (t)) | |
1234 | visit (DECL_VALUE_EXPR (t)); | |
1235 | if (code == VAR_DECL | |
1236 | && DECL_HAS_DEBUG_EXPR_P (t)) | |
1237 | visit (DECL_DEBUG_EXPR (t)); | |
1238 | /* ??? Hash DECL_INITIAL as streamed. Needs the output-block to | |
1239 | be able to call get_symbol_initial_value. */ | |
1240 | } | |
1241 | ||
ee03e71d RB |
1242 | if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) |
1243 | { | |
1244 | if (DECL_ASSEMBLER_NAME_SET_P (t)) | |
1245 | visit (DECL_ASSEMBLER_NAME (t)); | |
ee03e71d RB |
1246 | } |
1247 | ||
1248 | if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) | |
1249 | { | |
1250 | visit (DECL_FIELD_OFFSET (t)); | |
1251 | visit (DECL_BIT_FIELD_TYPE (t)); | |
1252 | visit (DECL_BIT_FIELD_REPRESENTATIVE (t)); | |
1253 | visit (DECL_FIELD_BIT_OFFSET (t)); | |
ee03e71d RB |
1254 | } |
1255 | ||
1256 | if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
1257 | { | |
1258 | visit (DECL_FUNCTION_PERSONALITY (t)); | |
325fe981 | 1259 | visit (DECL_FUNCTION_SPECIFIC_TARGET (t)); |
ee03e71d RB |
1260 | visit (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (t)); |
1261 | } | |
1262 | ||
1263 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
1264 | { | |
1265 | visit (TYPE_SIZE (t)); | |
1266 | visit (TYPE_SIZE_UNIT (t)); | |
1267 | visit (TYPE_ATTRIBUTES (t)); | |
1268 | visit (TYPE_NAME (t)); | |
1269 | visit (TYPE_MAIN_VARIANT (t)); | |
1270 | if (TYPE_FILE_SCOPE_P (t)) | |
1271 | ; | |
1272 | else | |
1273 | visit (TYPE_CONTEXT (t)); | |
ee03e71d RB |
1274 | } |
1275 | ||
1276 | if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) | |
1277 | { | |
1278 | if (code == ENUMERAL_TYPE) | |
1279 | visit (TYPE_VALUES (t)); | |
1280 | else if (code == ARRAY_TYPE) | |
1281 | visit (TYPE_DOMAIN (t)); | |
1282 | else if (RECORD_OR_UNION_TYPE_P (t)) | |
1283 | for (tree f = TYPE_FIELDS (t); f; f = TREE_CHAIN (f)) | |
1284 | visit (f); | |
1285 | else if (code == FUNCTION_TYPE | |
1286 | || code == METHOD_TYPE) | |
1287 | visit (TYPE_ARG_TYPES (t)); | |
1288 | if (!POINTER_TYPE_P (t)) | |
20deef65 NS |
1289 | visit (TYPE_MIN_VALUE_RAW (t)); |
1290 | visit (TYPE_MAX_VALUE_RAW (t)); | |
ee03e71d RB |
1291 | } |
1292 | ||
1293 | if (CODE_CONTAINS_STRUCT (code, TS_LIST)) | |
1294 | { | |
1295 | visit (TREE_PURPOSE (t)); | |
1296 | visit (TREE_VALUE (t)); | |
1297 | visit (TREE_CHAIN (t)); | |
1298 | } | |
1299 | ||
1300 | if (CODE_CONTAINS_STRUCT (code, TS_VEC)) | |
1301 | for (int i = 0; i < TREE_VEC_LENGTH (t); ++i) | |
1302 | visit (TREE_VEC_ELT (t, i)); | |
1303 | ||
1304 | if (CODE_CONTAINS_STRUCT (code, TS_EXP)) | |
1305 | { | |
449e9a33 | 1306 | hstate.add_hwi (TREE_OPERAND_LENGTH (t)); |
ee03e71d RB |
1307 | for (int i = 0; i < TREE_OPERAND_LENGTH (t); ++i) |
1308 | visit (TREE_OPERAND (t, i)); | |
1309 | } | |
1310 | ||
1311 | if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) | |
1312 | { | |
1313 | unsigned i; | |
1314 | tree b; | |
1315 | FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (t), i, b) | |
1316 | visit (b); | |
1317 | visit (BINFO_OFFSET (t)); | |
1318 | visit (BINFO_VTABLE (t)); | |
c01c111b | 1319 | /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX |
0c172706 JH |
1320 | BINFO_BASE_ACCESSES and BINFO_VPTR_INDEX; these are used |
1321 | by C++ FE only. */ | |
ee03e71d RB |
1322 | } |
1323 | ||
1324 | if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) | |
1325 | { | |
1326 | unsigned i; | |
1327 | tree index, value; | |
449e9a33 | 1328 | hstate.add_hwi (CONSTRUCTOR_NELTS (t)); |
ee03e71d RB |
1329 | FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t), i, index, value) |
1330 | { | |
1331 | visit (index); | |
1332 | visit (value); | |
1333 | } | |
1334 | } | |
1335 | ||
e06f9964 JJ |
1336 | if (code == OMP_CLAUSE) |
1337 | { | |
1338 | int i; | |
e8326772 | 1339 | HOST_WIDE_INT val; |
e06f9964 | 1340 | |
449e9a33 | 1341 | hstate.add_hwi (OMP_CLAUSE_CODE (t)); |
e06f9964 JJ |
1342 | switch (OMP_CLAUSE_CODE (t)) |
1343 | { | |
1344 | case OMP_CLAUSE_DEFAULT: | |
e8326772 | 1345 | val = OMP_CLAUSE_DEFAULT_KIND (t); |
e06f9964 JJ |
1346 | break; |
1347 | case OMP_CLAUSE_SCHEDULE: | |
e8326772 | 1348 | val = OMP_CLAUSE_SCHEDULE_KIND (t); |
e06f9964 JJ |
1349 | break; |
1350 | case OMP_CLAUSE_DEPEND: | |
e8326772 | 1351 | val = OMP_CLAUSE_DEPEND_KIND (t); |
e06f9964 JJ |
1352 | break; |
1353 | case OMP_CLAUSE_MAP: | |
e8326772 | 1354 | val = OMP_CLAUSE_MAP_KIND (t); |
e06f9964 JJ |
1355 | break; |
1356 | case OMP_CLAUSE_PROC_BIND: | |
e8326772 | 1357 | val = OMP_CLAUSE_PROC_BIND_KIND (t); |
e06f9964 JJ |
1358 | break; |
1359 | case OMP_CLAUSE_REDUCTION: | |
e8326772 | 1360 | val = OMP_CLAUSE_REDUCTION_CODE (t); |
e06f9964 JJ |
1361 | break; |
1362 | default: | |
e8326772 | 1363 | val = 0; |
e06f9964 JJ |
1364 | break; |
1365 | } | |
449e9a33 | 1366 | hstate.add_hwi (val); |
e06f9964 JJ |
1367 | for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (t)]; i++) |
1368 | visit (OMP_CLAUSE_OPERAND (t, i)); | |
1369 | visit (OMP_CLAUSE_CHAIN (t)); | |
1370 | } | |
1371 | ||
e8326772 | 1372 | return hstate.end (); |
ee03e71d RB |
1373 | |
1374 | #undef visit | |
1375 | } | |
1376 | ||
1377 | /* Compare two SCC entries by their hash value for qsorting them. */ | |
1378 | ||
a4b0388b JH |
1379 | int |
1380 | DFS::scc_entry_compare (const void *p1_, const void *p2_) | |
ee03e71d RB |
1381 | { |
1382 | const scc_entry *p1 = (const scc_entry *) p1_; | |
1383 | const scc_entry *p2 = (const scc_entry *) p2_; | |
1384 | if (p1->hash < p2->hash) | |
1385 | return -1; | |
1386 | else if (p1->hash > p2->hash) | |
1387 | return 1; | |
1388 | return 0; | |
1389 | } | |
1390 | ||
cec34ee5 EB |
1391 | /* Return a hash value for the SCC on the SCC stack from FIRST with SIZE. |
1392 | THIS_REF_P and REF_P are as passed to lto_output_tree for FIRST. */ | |
ee03e71d | 1393 | |
a4b0388b | 1394 | hashval_t |
cec34ee5 EB |
1395 | DFS::hash_scc (struct output_block *ob, unsigned first, unsigned size, |
1396 | bool ref_p, bool this_ref_p) | |
ee03e71d | 1397 | { |
a4b0388b JH |
1398 | unsigned int last_classes = 0, iterations = 0; |
1399 | ||
ee03e71d RB |
1400 | /* Compute hash values for the SCC members. */ |
1401 | for (unsigned i = 0; i < size; ++i) | |
0cf094c0 EB |
1402 | sccstack[first+i].hash |
1403 | = hash_tree (ob->writer_cache, NULL, sccstack[first+i].t); | |
ee03e71d RB |
1404 | |
1405 | if (size == 1) | |
1406 | return sccstack[first].hash; | |
1407 | ||
a4b0388b | 1408 | /* We aim to get unique hash for every tree within SCC and compute hash value |
0cf094c0 | 1409 | of the whole SCC by combining all values together in a stable (entry-point |
a4b0388b JH |
1410 | independent) order. This guarantees that the same SCC regions within |
1411 | different translation units will get the same hash values and therefore | |
1412 | will be merged at WPA time. | |
1413 | ||
0cf094c0 | 1414 | Often the hashes are already unique. In that case we compute the SCC hash |
a4b0388b JH |
1415 | by combining individual hash values in an increasing order. |
1416 | ||
0cf094c0 EB |
1417 | If there are duplicates, we seek at least one tree with unique hash (and |
1418 | pick one with minimal hash and this property). Then we obtain a stable | |
1419 | order by DFS walk starting from this unique tree and then use the index | |
a4b0388b JH |
1420 | within this order to make individual hash values unique. |
1421 | ||
1422 | If there is no tree with unique hash, we iteratively propagate the hash | |
1423 | values across the internal edges of SCC. This usually quickly leads | |
1424 | to unique hashes. Consider, for example, an SCC containing two pointers | |
0cf094c0 EB |
1425 | that are identical except for the types they point to and assume that |
1426 | these types are also part of the SCC. The propagation will add the | |
1427 | points-to type information into their hash values. */ | |
a4b0388b JH |
1428 | do |
1429 | { | |
0cf094c0 | 1430 | /* Sort the SCC so we can easily check for uniqueness. */ |
a4b0388b JH |
1431 | qsort (&sccstack[first], size, sizeof (scc_entry), scc_entry_compare); |
1432 | ||
1433 | unsigned int classes = 1; | |
1434 | int firstunique = -1; | |
1435 | ||
0cf094c0 EB |
1436 | /* Find the tree with lowest unique hash (if it exists) and compute |
1437 | the number of equivalence classes. */ | |
a4b0388b JH |
1438 | if (sccstack[first].hash != sccstack[first+1].hash) |
1439 | firstunique = 0; | |
1440 | for (unsigned i = 1; i < size; ++i) | |
1441 | if (sccstack[first+i-1].hash != sccstack[first+i].hash) | |
1442 | { | |
1443 | classes++; | |
1444 | if (firstunique == -1 | |
1445 | && (i == size - 1 | |
1446 | || sccstack[first+i+1].hash != sccstack[first+i].hash)) | |
1447 | firstunique = i; | |
1448 | } | |
1449 | ||
0cf094c0 | 1450 | /* If we found a tree with unique hash, stop the iteration. */ |
a4b0388b JH |
1451 | if (firstunique != -1 |
1452 | /* Also terminate if we run out of iterations or if the number of | |
1453 | equivalence classes is no longer increasing. | |
1454 | For example a cyclic list of trees that are all equivalent will | |
1455 | never have unique entry point; we however do not build such SCCs | |
1456 | in our IL. */ | |
1457 | || classes <= last_classes || iterations > 16) | |
1458 | { | |
1459 | hashval_t scc_hash; | |
1460 | ||
1461 | /* If some hashes are not unique (CLASSES != SIZE), use the DFS walk | |
0cf094c0 | 1462 | starting from FIRSTUNIQUE to obtain a stable order. */ |
a4b0388b JH |
1463 | if (classes != size && firstunique != -1) |
1464 | { | |
1465 | hash_map <tree, hashval_t> map(size*2); | |
1466 | ||
1467 | /* Store hash values into a map, so we can associate them with | |
0cf094c0 | 1468 | the reordered SCC. */ |
a4b0388b JH |
1469 | for (unsigned i = 0; i < size; ++i) |
1470 | map.put (sccstack[first+i].t, sccstack[first+i].hash); | |
1471 | ||
cec34ee5 EB |
1472 | DFS again (ob, sccstack[first+firstunique].t, ref_p, this_ref_p, |
1473 | true); | |
a4b0388b JH |
1474 | gcc_assert (again.sccstack.length () == size); |
1475 | ||
1476 | memcpy (sccstack.address () + first, | |
1477 | again.sccstack.address (), | |
1478 | sizeof (scc_entry) * size); | |
1479 | ||
1480 | /* Update hash values of individual members by hashing in the | |
1481 | index within the stable order. This ensures uniqueness. | |
0cf094c0 EB |
1482 | Also compute the SCC hash by mixing in all hash values in |
1483 | the stable order we obtained. */ | |
a4b0388b JH |
1484 | sccstack[first].hash = *map.get (sccstack[first].t); |
1485 | scc_hash = sccstack[first].hash; | |
1486 | for (unsigned i = 1; i < size; ++i) | |
1487 | { | |
1488 | sccstack[first+i].hash | |
1489 | = iterative_hash_hashval_t (i, | |
1490 | *map.get (sccstack[first+i].t)); | |
0cf094c0 EB |
1491 | scc_hash |
1492 | = iterative_hash_hashval_t (scc_hash, | |
1493 | sccstack[first+i].hash); | |
a4b0388b JH |
1494 | } |
1495 | } | |
0cf094c0 EB |
1496 | /* If we got a unique hash value for each tree, then sort already |
1497 | ensured entry-point independent order. Only compute the final | |
1498 | SCC hash. | |
a4b0388b JH |
1499 | |
1500 | If we failed to find the unique entry point, we go by the same | |
0cf094c0 | 1501 | route. We will eventually introduce unwanted hash conflicts. */ |
a4b0388b JH |
1502 | else |
1503 | { | |
1504 | scc_hash = sccstack[first].hash; | |
1505 | for (unsigned i = 1; i < size; ++i) | |
0cf094c0 EB |
1506 | scc_hash |
1507 | = iterative_hash_hashval_t (scc_hash, sccstack[first+i].hash); | |
1508 | ||
1509 | /* We cannot 100% guarantee that the hash won't conflict so as | |
1510 | to make it impossible to find a unique hash. This however | |
1511 | should be an extremely rare case. ICE for now so possible | |
1512 | issues are found and evaluated. */ | |
a4b0388b JH |
1513 | gcc_checking_assert (classes == size); |
1514 | } | |
1515 | ||
0cf094c0 EB |
1516 | /* To avoid conflicts across SCCs, iteratively hash the whole SCC |
1517 | hash into the hash of each element. */ | |
a4b0388b JH |
1518 | for (unsigned i = 0; i < size; ++i) |
1519 | sccstack[first+i].hash | |
1520 | = iterative_hash_hashval_t (sccstack[first+i].hash, scc_hash); | |
1521 | return scc_hash; | |
1522 | } | |
1523 | ||
1524 | last_classes = classes; | |
1525 | iterations++; | |
1526 | ||
1527 | /* We failed to identify the entry point; propagate hash values across | |
1528 | the edges. */ | |
0cf094c0 EB |
1529 | hash_map <tree, hashval_t> map(size*2); |
1530 | ||
1531 | for (unsigned i = 0; i < size; ++i) | |
1532 | map.put (sccstack[first+i].t, sccstack[first+i].hash); | |
1533 | ||
1534 | for (unsigned i = 0; i < size; i++) | |
1535 | sccstack[first+i].hash | |
1536 | = hash_tree (ob->writer_cache, &map, sccstack[first+i].t); | |
a4b0388b JH |
1537 | } |
1538 | while (true); | |
ee03e71d RB |
1539 | } |
1540 | ||
1541 | /* DFS walk EXPR and stream SCCs of tree bodies if they are not | |
1542 | already in the streamer cache. Main routine called for | |
1543 | each visit of EXPR. */ | |
1544 | ||
a4b0388b JH |
1545 | void |
1546 | DFS::DFS_write_tree (struct output_block *ob, sccs *from_state, | |
bbf043c2 | 1547 | tree expr, bool ref_p, bool this_ref_p) |
ee03e71d | 1548 | { |
ee03e71d RB |
1549 | /* Handle special cases. */ |
1550 | if (expr == NULL_TREE) | |
1551 | return; | |
1552 | ||
1553 | /* Do not DFS walk into indexable trees. */ | |
1554 | if (this_ref_p && tree_is_indexable (expr)) | |
1555 | return; | |
1556 | ||
1557 | /* Check if we already streamed EXPR. */ | |
bbf043c2 | 1558 | if (streamer_tree_cache_lookup (ob->writer_cache, expr, NULL)) |
ee03e71d RB |
1559 | return; |
1560 | ||
bbf043c2 JJ |
1561 | worklist w; |
1562 | w.expr = expr; | |
1563 | w.from_state = from_state; | |
1564 | w.cstate = NULL; | |
1565 | w.ref_p = ref_p; | |
1566 | w.this_ref_p = this_ref_p; | |
1567 | worklist_vec.safe_push (w); | |
ee03e71d RB |
1568 | } |
1569 | ||
b9393656 | 1570 | |
cec34ee5 EB |
1571 | /* Emit the physical representation of tree node EXPR to output block OB. |
1572 | If THIS_REF_P is true, the leaves of EXPR are emitted as references via | |
1573 | lto_output_tree_ref. REF_P is used for streaming siblings of EXPR. */ | |
b9393656 DN |
1574 | |
1575 | void | |
7e54c608 RG |
1576 | lto_output_tree (struct output_block *ob, tree expr, |
1577 | bool ref_p, bool this_ref_p) | |
b9393656 DN |
1578 | { |
1579 | unsigned ix; | |
1580 | bool existed_p; | |
1581 | ||
1582 | if (expr == NULL_TREE) | |
1583 | { | |
412288f1 | 1584 | streamer_write_record_start (ob, LTO_null); |
b9393656 DN |
1585 | return; |
1586 | } | |
1587 | ||
7e54c608 | 1588 | if (this_ref_p && tree_is_indexable (expr)) |
b9393656 DN |
1589 | { |
1590 | lto_output_tree_ref (ob, expr); | |
1591 | return; | |
1592 | } | |
1593 | ||
ee03e71d | 1594 | existed_p = streamer_tree_cache_lookup (ob->writer_cache, expr, &ix); |
b9393656 DN |
1595 | if (existed_p) |
1596 | { | |
1597 | /* If a node has already been streamed out, make sure that | |
1598 | we don't write it more than once. Otherwise, the reader | |
1599 | will instantiate two different nodes for the same object. */ | |
412288f1 DN |
1600 | streamer_write_record_start (ob, LTO_tree_pickle_reference); |
1601 | streamer_write_uhwi (ob, ix); | |
1602 | streamer_write_enum (ob->main_stream, LTO_tags, LTO_NUM_TAGS, | |
1603 | lto_tree_code_to_tag (TREE_CODE (expr))); | |
ee03e71d | 1604 | lto_stats.num_pickle_refs_output++; |
b9393656 DN |
1605 | } |
1606 | else | |
1607 | { | |
ee03e71d RB |
1608 | /* This is the first time we see EXPR, write all reachable |
1609 | trees to OB. */ | |
1610 | static bool in_dfs_walk; | |
1611 | ||
1612 | /* Protect against recursion which means disconnect between | |
1613 | what tree edges we walk in the DFS walk and what edges | |
1614 | we stream out. */ | |
1615 | gcc_assert (!in_dfs_walk); | |
1616 | ||
b4da704c JH |
1617 | if (streamer_dump_file) |
1618 | { | |
1619 | print_node_brief (streamer_dump_file, " Streaming SCC of ", | |
1620 | expr, 4); | |
1621 | fprintf (streamer_dump_file, "\n"); | |
1622 | } | |
1623 | ||
ee03e71d RB |
1624 | /* Start the DFS walk. */ |
1625 | /* Save ob state ... */ | |
1626 | /* let's see ... */ | |
1627 | in_dfs_walk = true; | |
a4b0388b | 1628 | DFS (ob, expr, ref_p, this_ref_p, false); |
ee03e71d RB |
1629 | in_dfs_walk = false; |
1630 | ||
1631 | /* Finally append a reference to the tree we were writing. | |
1632 | ??? If expr ended up as a singleton we could have | |
1633 | inlined it here and avoid outputting a reference. */ | |
1634 | existed_p = streamer_tree_cache_lookup (ob->writer_cache, expr, &ix); | |
1635 | gcc_assert (existed_p); | |
1636 | streamer_write_record_start (ob, LTO_tree_pickle_reference); | |
1637 | streamer_write_uhwi (ob, ix); | |
1638 | streamer_write_enum (ob->main_stream, LTO_tags, LTO_NUM_TAGS, | |
1639 | lto_tree_code_to_tag (TREE_CODE (expr))); | |
b4da704c JH |
1640 | if (streamer_dump_file) |
1641 | { | |
1642 | print_node_brief (streamer_dump_file, " Finished SCC of ", | |
1643 | expr, 4); | |
1644 | fprintf (streamer_dump_file, "\n\n"); | |
1645 | } | |
ee03e71d | 1646 | lto_stats.num_pickle_refs_output++; |
d7f09764 DN |
1647 | } |
1648 | } | |
1649 | ||
1650 | ||
1651 | /* Output to OB a list of try/catch handlers starting with FIRST. */ | |
1652 | ||
1653 | static void | |
1654 | output_eh_try_list (struct output_block *ob, eh_catch first) | |
1655 | { | |
1656 | eh_catch n; | |
1657 | ||
1658 | for (n = first; n; n = n->next_catch) | |
1659 | { | |
412288f1 | 1660 | streamer_write_record_start (ob, LTO_eh_catch); |
b9393656 DN |
1661 | stream_write_tree (ob, n->type_list, true); |
1662 | stream_write_tree (ob, n->filter_list, true); | |
1663 | stream_write_tree (ob, n->label, true); | |
d7f09764 DN |
1664 | } |
1665 | ||
412288f1 | 1666 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1667 | } |
1668 | ||
1669 | ||
1670 | /* Output EH region R in function FN to OB. CURR_RN is the slot index | |
1671 | that is being emitted in FN->EH->REGION_ARRAY. This is used to | |
1672 | detect EH region sharing. */ | |
1673 | ||
1674 | static void | |
1675 | output_eh_region (struct output_block *ob, eh_region r) | |
1676 | { | |
1677 | enum LTO_tags tag; | |
1678 | ||
1679 | if (r == NULL) | |
1680 | { | |
412288f1 | 1681 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1682 | return; |
1683 | } | |
1684 | ||
1685 | if (r->type == ERT_CLEANUP) | |
1686 | tag = LTO_ert_cleanup; | |
1687 | else if (r->type == ERT_TRY) | |
1688 | tag = LTO_ert_try; | |
1689 | else if (r->type == ERT_ALLOWED_EXCEPTIONS) | |
1690 | tag = LTO_ert_allowed_exceptions; | |
1691 | else if (r->type == ERT_MUST_NOT_THROW) | |
1692 | tag = LTO_ert_must_not_throw; | |
1693 | else | |
1694 | gcc_unreachable (); | |
1695 | ||
412288f1 DN |
1696 | streamer_write_record_start (ob, tag); |
1697 | streamer_write_hwi (ob, r->index); | |
d7f09764 DN |
1698 | |
1699 | if (r->outer) | |
412288f1 | 1700 | streamer_write_hwi (ob, r->outer->index); |
d7f09764 | 1701 | else |
412288f1 | 1702 | streamer_write_zero (ob); |
d7f09764 DN |
1703 | |
1704 | if (r->inner) | |
412288f1 | 1705 | streamer_write_hwi (ob, r->inner->index); |
d7f09764 | 1706 | else |
412288f1 | 1707 | streamer_write_zero (ob); |
d7f09764 DN |
1708 | |
1709 | if (r->next_peer) | |
412288f1 | 1710 | streamer_write_hwi (ob, r->next_peer->index); |
d7f09764 | 1711 | else |
412288f1 | 1712 | streamer_write_zero (ob); |
d7f09764 DN |
1713 | |
1714 | if (r->type == ERT_TRY) | |
1715 | { | |
1716 | output_eh_try_list (ob, r->u.eh_try.first_catch); | |
1717 | } | |
1718 | else if (r->type == ERT_ALLOWED_EXCEPTIONS) | |
1719 | { | |
b9393656 DN |
1720 | stream_write_tree (ob, r->u.allowed.type_list, true); |
1721 | stream_write_tree (ob, r->u.allowed.label, true); | |
412288f1 | 1722 | streamer_write_uhwi (ob, r->u.allowed.filter); |
d7f09764 DN |
1723 | } |
1724 | else if (r->type == ERT_MUST_NOT_THROW) | |
1725 | { | |
b9393656 | 1726 | stream_write_tree (ob, r->u.must_not_throw.failure_decl, true); |
7cb7d208 RB |
1727 | bitpack_d bp = bitpack_create (ob->main_stream); |
1728 | stream_output_location (ob, &bp, r->u.must_not_throw.failure_loc); | |
1729 | streamer_write_bitpack (&bp); | |
d7f09764 DN |
1730 | } |
1731 | ||
1732 | if (r->landing_pads) | |
412288f1 | 1733 | streamer_write_hwi (ob, r->landing_pads->index); |
d7f09764 | 1734 | else |
412288f1 | 1735 | streamer_write_zero (ob); |
d7f09764 DN |
1736 | } |
1737 | ||
1738 | ||
1739 | /* Output landing pad LP to OB. */ | |
1740 | ||
1741 | static void | |
1742 | output_eh_lp (struct output_block *ob, eh_landing_pad lp) | |
1743 | { | |
1744 | if (lp == NULL) | |
1745 | { | |
412288f1 | 1746 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1747 | return; |
1748 | } | |
1749 | ||
412288f1 DN |
1750 | streamer_write_record_start (ob, LTO_eh_landing_pad); |
1751 | streamer_write_hwi (ob, lp->index); | |
d7f09764 | 1752 | if (lp->next_lp) |
412288f1 | 1753 | streamer_write_hwi (ob, lp->next_lp->index); |
d7f09764 | 1754 | else |
412288f1 | 1755 | streamer_write_zero (ob); |
d7f09764 DN |
1756 | |
1757 | if (lp->region) | |
412288f1 | 1758 | streamer_write_hwi (ob, lp->region->index); |
d7f09764 | 1759 | else |
412288f1 | 1760 | streamer_write_zero (ob); |
d7f09764 | 1761 | |
b9393656 | 1762 | stream_write_tree (ob, lp->post_landing_pad, true); |
d7f09764 DN |
1763 | } |
1764 | ||
1765 | ||
1766 | /* Output the existing eh_table to OB. */ | |
1767 | ||
1768 | static void | |
1769 | output_eh_regions (struct output_block *ob, struct function *fn) | |
1770 | { | |
1771 | if (fn->eh && fn->eh->region_tree) | |
1772 | { | |
1773 | unsigned i; | |
1774 | eh_region eh; | |
1775 | eh_landing_pad lp; | |
1776 | tree ttype; | |
1777 | ||
412288f1 | 1778 | streamer_write_record_start (ob, LTO_eh_table); |
d7f09764 DN |
1779 | |
1780 | /* Emit the index of the root of the EH region tree. */ | |
412288f1 | 1781 | streamer_write_hwi (ob, fn->eh->region_tree->index); |
d7f09764 DN |
1782 | |
1783 | /* Emit all the EH regions in the region array. */ | |
9771b263 DN |
1784 | streamer_write_hwi (ob, vec_safe_length (fn->eh->region_array)); |
1785 | FOR_EACH_VEC_SAFE_ELT (fn->eh->region_array, i, eh) | |
d7f09764 DN |
1786 | output_eh_region (ob, eh); |
1787 | ||
1788 | /* Emit all landing pads. */ | |
9771b263 DN |
1789 | streamer_write_hwi (ob, vec_safe_length (fn->eh->lp_array)); |
1790 | FOR_EACH_VEC_SAFE_ELT (fn->eh->lp_array, i, lp) | |
d7f09764 DN |
1791 | output_eh_lp (ob, lp); |
1792 | ||
1793 | /* Emit all the runtime type data. */ | |
9771b263 DN |
1794 | streamer_write_hwi (ob, vec_safe_length (fn->eh->ttype_data)); |
1795 | FOR_EACH_VEC_SAFE_ELT (fn->eh->ttype_data, i, ttype) | |
b9393656 | 1796 | stream_write_tree (ob, ttype, true); |
d7f09764 DN |
1797 | |
1798 | /* Emit the table of action chains. */ | |
1799 | if (targetm.arm_eabi_unwinder) | |
1800 | { | |
1801 | tree t; | |
9771b263 DN |
1802 | streamer_write_hwi (ob, vec_safe_length (fn->eh->ehspec_data.arm_eabi)); |
1803 | FOR_EACH_VEC_SAFE_ELT (fn->eh->ehspec_data.arm_eabi, i, t) | |
b9393656 | 1804 | stream_write_tree (ob, t, true); |
d7f09764 DN |
1805 | } |
1806 | else | |
1807 | { | |
1808 | uchar c; | |
9771b263 DN |
1809 | streamer_write_hwi (ob, vec_safe_length (fn->eh->ehspec_data.other)); |
1810 | FOR_EACH_VEC_SAFE_ELT (fn->eh->ehspec_data.other, i, c) | |
412288f1 | 1811 | streamer_write_char_stream (ob->main_stream, c); |
d7f09764 DN |
1812 | } |
1813 | } | |
1814 | ||
07233947 DN |
1815 | /* The LTO_null either terminates the record or indicates that there |
1816 | are no eh_records at all. */ | |
412288f1 | 1817 | streamer_write_record_start (ob, LTO_null); |
d7f09764 DN |
1818 | } |
1819 | ||
1820 | ||
1821 | /* Output all of the active ssa names to the ssa_names stream. */ | |
1822 | ||
1823 | static void | |
1824 | output_ssa_names (struct output_block *ob, struct function *fn) | |
1825 | { | |
1826 | unsigned int i, len; | |
1827 | ||
9771b263 | 1828 | len = vec_safe_length (SSANAMES (fn)); |
412288f1 | 1829 | streamer_write_uhwi (ob, len); |
d7f09764 DN |
1830 | |
1831 | for (i = 1; i < len; i++) | |
1832 | { | |
9771b263 | 1833 | tree ptr = (*SSANAMES (fn))[i]; |
d7f09764 DN |
1834 | |
1835 | if (ptr == NULL_TREE | |
1836 | || SSA_NAME_IN_FREE_LIST (ptr) | |
9a13d066 RB |
1837 | || virtual_operand_p (ptr) |
1838 | /* Simply skip unreleased SSA names. */ | |
1839 | || (! SSA_NAME_IS_DEFAULT_DEF (ptr) | |
1840 | && (! SSA_NAME_DEF_STMT (ptr) | |
1841 | || ! gimple_bb (SSA_NAME_DEF_STMT (ptr))))) | |
d7f09764 DN |
1842 | continue; |
1843 | ||
412288f1 DN |
1844 | streamer_write_uhwi (ob, i); |
1845 | streamer_write_char_stream (ob->main_stream, | |
1846 | SSA_NAME_IS_DEFAULT_DEF (ptr)); | |
70b5e7dc RG |
1847 | if (SSA_NAME_VAR (ptr)) |
1848 | stream_write_tree (ob, SSA_NAME_VAR (ptr), true); | |
1849 | else | |
1850 | /* ??? This drops SSA_NAME_IDENTIFIER on the floor. */ | |
1851 | stream_write_tree (ob, TREE_TYPE (ptr), true); | |
d7f09764 DN |
1852 | } |
1853 | ||
412288f1 | 1854 | streamer_write_zero (ob); |
d7f09764 DN |
1855 | } |
1856 | ||
1857 | ||
807e902e | 1858 | |
d7f09764 DN |
1859 | /* Output the cfg. */ |
1860 | ||
1861 | static void | |
1862 | output_cfg (struct output_block *ob, struct function *fn) | |
1863 | { | |
1864 | struct lto_output_stream *tmp_stream = ob->main_stream; | |
1865 | basic_block bb; | |
1866 | ||
1867 | ob->main_stream = ob->cfg_stream; | |
1868 | ||
412288f1 | 1869 | streamer_write_enum (ob->main_stream, profile_status_d, PROFILE_LAST, |
ea19eb9f | 1870 | profile_status_for_fn (fn)); |
d7f09764 DN |
1871 | |
1872 | /* Output the number of the highest basic block. */ | |
3986e690 | 1873 | streamer_write_uhwi (ob, last_basic_block_for_fn (fn)); |
d7f09764 DN |
1874 | |
1875 | FOR_ALL_BB_FN (bb, fn) | |
1876 | { | |
1877 | edge_iterator ei; | |
1878 | edge e; | |
1879 | ||
412288f1 | 1880 | streamer_write_hwi (ob, bb->index); |
d7f09764 DN |
1881 | |
1882 | /* Output the successors and the edge flags. */ | |
412288f1 | 1883 | streamer_write_uhwi (ob, EDGE_COUNT (bb->succs)); |
d7f09764 DN |
1884 | FOR_EACH_EDGE (e, ei, bb->succs) |
1885 | { | |
412288f1 | 1886 | streamer_write_uhwi (ob, e->dest->index); |
357067f2 | 1887 | e->probability.stream_out (ob); |
412288f1 | 1888 | streamer_write_uhwi (ob, e->flags); |
d7f09764 DN |
1889 | } |
1890 | } | |
1891 | ||
412288f1 | 1892 | streamer_write_hwi (ob, -1); |
d7f09764 | 1893 | |
fefa31b5 | 1894 | bb = ENTRY_BLOCK_PTR_FOR_FN (cfun); |
d7f09764 DN |
1895 | while (bb->next_bb) |
1896 | { | |
412288f1 | 1897 | streamer_write_hwi (ob, bb->next_bb->index); |
d7f09764 DN |
1898 | bb = bb->next_bb; |
1899 | } | |
1900 | ||
412288f1 | 1901 | streamer_write_hwi (ob, -1); |
d7f09764 | 1902 | |
dd366ec3 RB |
1903 | /* ??? The cfgloop interface is tied to cfun. */ |
1904 | gcc_assert (cfun == fn); | |
1905 | ||
1906 | /* Output the number of loops. */ | |
0fc822d0 | 1907 | streamer_write_uhwi (ob, number_of_loops (fn)); |
dd366ec3 RB |
1908 | |
1909 | /* Output each loop, skipping the tree root which has number zero. */ | |
0fc822d0 | 1910 | for (unsigned i = 1; i < number_of_loops (fn); ++i) |
dd366ec3 | 1911 | { |
0fc822d0 | 1912 | struct loop *loop = get_loop (fn, i); |
dd366ec3 RB |
1913 | |
1914 | /* Write the index of the loop header. That's enough to rebuild | |
1915 | the loop tree on the reader side. Stream -1 for an unused | |
1916 | loop entry. */ | |
1917 | if (!loop) | |
1918 | { | |
1919 | streamer_write_hwi (ob, -1); | |
1920 | continue; | |
1921 | } | |
1922 | else | |
1923 | streamer_write_hwi (ob, loop->header->index); | |
1924 | ||
1925 | /* Write everything copy_loop_info copies. */ | |
1926 | streamer_write_enum (ob->main_stream, | |
1927 | loop_estimation, EST_LAST, loop->estimate_state); | |
1928 | streamer_write_hwi (ob, loop->any_upper_bound); | |
1929 | if (loop->any_upper_bound) | |
a73f34c2 | 1930 | streamer_write_widest_int (ob, loop->nb_iterations_upper_bound); |
105e29c5 JH |
1931 | streamer_write_hwi (ob, loop->any_likely_upper_bound); |
1932 | if (loop->any_likely_upper_bound) | |
a73f34c2 | 1933 | streamer_write_widest_int (ob, loop->nb_iterations_likely_upper_bound); |
dd366ec3 RB |
1934 | streamer_write_hwi (ob, loop->any_estimate); |
1935 | if (loop->any_estimate) | |
a73f34c2 | 1936 | streamer_write_widest_int (ob, loop->nb_iterations_estimate); |
e9287a41 RB |
1937 | |
1938 | /* Write OMP SIMD related info. */ | |
1939 | streamer_write_hwi (ob, loop->safelen); | |
ac9effed | 1940 | streamer_write_hwi (ob, loop->unroll); |
718c4601 | 1941 | streamer_write_hwi (ob, loop->dont_vectorize); |
b15b5979 | 1942 | streamer_write_hwi (ob, loop->force_vectorize); |
e9287a41 | 1943 | stream_write_tree (ob, loop->simduid, true); |
dd366ec3 RB |
1944 | } |
1945 | ||
d7f09764 DN |
1946 | ob->main_stream = tmp_stream; |
1947 | } | |
1948 | ||
1949 | ||
d7f09764 DN |
1950 | /* Create the header in the file using OB. If the section type is for |
1951 | a function, set FN to the decl for that function. */ | |
1952 | ||
fb3f88cc | 1953 | void |
d7f09764 DN |
1954 | produce_asm (struct output_block *ob, tree fn) |
1955 | { | |
1956 | enum lto_section_type section_type = ob->section_type; | |
1957 | struct lto_function_header header; | |
1958 | char *section_name; | |
d7f09764 DN |
1959 | |
1960 | if (section_type == LTO_section_function_body) | |
1961 | { | |
1962 | const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn)); | |
73ce4d1e | 1963 | section_name = lto_get_section_name (section_type, name, NULL); |
d7f09764 DN |
1964 | } |
1965 | else | |
73ce4d1e | 1966 | section_name = lto_get_section_name (section_type, NULL, NULL); |
d7f09764 DN |
1967 | |
1968 | lto_begin_section (section_name, !flag_wpa); | |
1969 | free (section_name); | |
1970 | ||
1971 | /* The entire header is stream computed here. */ | |
1972 | memset (&header, 0, sizeof (struct lto_function_header)); | |
b8698a0f | 1973 | |
d7f09764 | 1974 | /* Write the header. */ |
207c68cd RB |
1975 | header.major_version = LTO_major_version; |
1976 | header.minor_version = LTO_minor_version; | |
b8698a0f | 1977 | |
d7f09764 DN |
1978 | if (section_type == LTO_section_function_body) |
1979 | header.cfg_size = ob->cfg_stream->total_size; | |
1980 | header.main_size = ob->main_stream->total_size; | |
1981 | header.string_size = ob->string_stream->total_size; | |
f6bcdb5e | 1982 | lto_write_data (&header, sizeof header); |
d7f09764 DN |
1983 | |
1984 | /* Put all of the gimple and the string table out the asm file as a | |
1985 | block of text. */ | |
1986 | if (section_type == LTO_section_function_body) | |
1987 | lto_write_stream (ob->cfg_stream); | |
1988 | lto_write_stream (ob->main_stream); | |
1989 | lto_write_stream (ob->string_stream); | |
1990 | ||
1991 | lto_end_section (); | |
1992 | } | |
1993 | ||
1994 | ||
35f5b1c1 | 1995 | /* Output the base body of struct function FN using output block OB. */ |
d7f09764 DN |
1996 | |
1997 | static void | |
35f5b1c1 | 1998 | output_struct_function_base (struct output_block *ob, struct function *fn) |
d7f09764 | 1999 | { |
2465dcc2 | 2000 | struct bitpack_d bp; |
c021f10b NF |
2001 | unsigned i; |
2002 | tree t; | |
d7f09764 | 2003 | |
35f5b1c1 LC |
2004 | /* Output the static chain and non-local goto save area. */ |
2005 | stream_write_tree (ob, fn->static_chain_decl, true); | |
2006 | stream_write_tree (ob, fn->nonlocal_goto_save_area, true); | |
d7f09764 | 2007 | |
35f5b1c1 | 2008 | /* Output all the local variables in the function. */ |
9771b263 DN |
2009 | streamer_write_hwi (ob, vec_safe_length (fn->local_decls)); |
2010 | FOR_EACH_VEC_SAFE_ELT (fn->local_decls, i, t) | |
35f5b1c1 | 2011 | stream_write_tree (ob, t, true); |
d7f09764 | 2012 | |
dd366ec3 RB |
2013 | /* Output current IL state of the function. */ |
2014 | streamer_write_uhwi (ob, fn->curr_properties); | |
d7f09764 DN |
2015 | |
2016 | /* Write all the attributes for FN. */ | |
2465dcc2 RG |
2017 | bp = bitpack_create (ob->main_stream); |
2018 | bp_pack_value (&bp, fn->is_thunk, 1); | |
2019 | bp_pack_value (&bp, fn->has_local_explicit_reg_vars, 1); | |
2465dcc2 RG |
2020 | bp_pack_value (&bp, fn->returns_pcc_struct, 1); |
2021 | bp_pack_value (&bp, fn->returns_struct, 1); | |
2022 | bp_pack_value (&bp, fn->can_throw_non_call_exceptions, 1); | |
2da02156 | 2023 | bp_pack_value (&bp, fn->can_delete_dead_exceptions, 1); |
2465dcc2 RG |
2024 | bp_pack_value (&bp, fn->always_inline_functions_inlined, 1); |
2025 | bp_pack_value (&bp, fn->after_inlining, 1); | |
2465dcc2 RG |
2026 | bp_pack_value (&bp, fn->stdarg, 1); |
2027 | bp_pack_value (&bp, fn->has_nonlocal_label, 1); | |
aa43616c | 2028 | bp_pack_value (&bp, fn->has_forced_label_in_static, 1); |
2465dcc2 RG |
2029 | bp_pack_value (&bp, fn->calls_alloca, 1); |
2030 | bp_pack_value (&bp, fn->calls_setjmp, 1); | |
b15b5979 | 2031 | bp_pack_value (&bp, fn->has_force_vectorize_loops, 1); |
e9287a41 | 2032 | bp_pack_value (&bp, fn->has_simduid_loops, 1); |
2465dcc2 RG |
2033 | bp_pack_value (&bp, fn->va_list_fpr_size, 8); |
2034 | bp_pack_value (&bp, fn->va_list_gpr_size, 8); | |
743c1134 | 2035 | bp_pack_value (&bp, fn->last_clique, sizeof (short) * 8); |
7cb7d208 RB |
2036 | |
2037 | /* Output the function start and end loci. */ | |
2038 | stream_output_location (ob, &bp, fn->function_start_locus); | |
2039 | stream_output_location (ob, &bp, fn->function_end_locus); | |
2040 | ||
b348c78a AO |
2041 | /* Save the instance discriminator if present. */ |
2042 | int *instance_number_p = NULL; | |
2043 | if (decl_to_instance_map) | |
2044 | instance_number_p = decl_to_instance_map->get (fn->decl); | |
2045 | bp_pack_value (&bp, !!instance_number_p, 1); | |
2046 | if (instance_number_p) | |
2047 | bp_pack_value (&bp, *instance_number_p, sizeof (int) * CHAR_BIT); | |
2048 | ||
412288f1 | 2049 | streamer_write_bitpack (&bp); |
35f5b1c1 | 2050 | } |
d7f09764 | 2051 | |
ac364a48 | 2052 | |
ec1db2a9 RB |
2053 | /* Collect all leaf BLOCKs beyond ROOT into LEAFS. */ |
2054 | ||
2055 | static void | |
2056 | collect_block_tree_leafs (tree root, vec<tree> &leafs) | |
2057 | { | |
2058 | for (root = BLOCK_SUBBLOCKS (root); root; root = BLOCK_CHAIN (root)) | |
2059 | if (! BLOCK_SUBBLOCKS (root)) | |
2060 | leafs.safe_push (root); | |
2061 | else | |
2062 | collect_block_tree_leafs (BLOCK_SUBBLOCKS (root), leafs); | |
2063 | } | |
2064 | ||
35f5b1c1 | 2065 | /* Output the body of function NODE->DECL. */ |
688a482d | 2066 | |
35f5b1c1 LC |
2067 | static void |
2068 | output_function (struct cgraph_node *node) | |
2069 | { | |
2070 | tree function; | |
2071 | struct function *fn; | |
2072 | basic_block bb; | |
2073 | struct output_block *ob; | |
d7f09764 | 2074 | |
b4da704c JH |
2075 | if (streamer_dump_file) |
2076 | fprintf (streamer_dump_file, "\nStreaming body of %s\n", | |
2077 | node->name ()); | |
2078 | ||
67348ccc | 2079 | function = node->decl; |
35f5b1c1 LC |
2080 | fn = DECL_STRUCT_FUNCTION (function); |
2081 | ob = create_output_block (LTO_section_function_body); | |
2082 | ||
2083 | clear_line_info (ob); | |
0b83e688 | 2084 | ob->symbol = node; |
35f5b1c1 LC |
2085 | |
2086 | gcc_assert (current_function_decl == NULL_TREE && cfun == NULL); | |
2087 | ||
2088 | /* Set current_function_decl and cfun. */ | |
35f5b1c1 LC |
2089 | push_cfun (fn); |
2090 | ||
2091 | /* Make string 0 be a NULL string. */ | |
2092 | streamer_write_char_stream (ob->string_stream, 0); | |
2093 | ||
2094 | streamer_write_record_start (ob, LTO_function); | |
2095 | ||
815effe1 JH |
2096 | /* Output decls for parameters and args. */ |
2097 | stream_write_tree (ob, DECL_RESULT (function), true); | |
2098 | streamer_write_chain (ob, DECL_ARGUMENTS (function), true); | |
d7f09764 | 2099 | |
1ea85365 RB |
2100 | /* Output debug args if available. */ |
2101 | vec<tree, va_gc> **debugargs = decl_debug_args_lookup (function); | |
2102 | if (! debugargs) | |
2103 | streamer_write_uhwi (ob, 0); | |
2104 | else | |
2105 | { | |
2106 | streamer_write_uhwi (ob, (*debugargs)->length ()); | |
2107 | for (unsigned i = 0; i < (*debugargs)->length (); ++i) | |
2108 | stream_write_tree (ob, (**debugargs)[i], true); | |
2109 | } | |
2110 | ||
d7f09764 | 2111 | /* Output DECL_INITIAL for the function, which contains the tree of |
ec1db2a9 | 2112 | lexical scopes. */ |
b9393656 | 2113 | stream_write_tree (ob, DECL_INITIAL (function), true); |
ec1db2a9 RB |
2114 | /* As we do not recurse into BLOCK_SUBBLOCKS but only BLOCK_SUPERCONTEXT |
2115 | collect block tree leafs and stream those. */ | |
2116 | auto_vec<tree> block_tree_leafs; | |
2117 | if (DECL_INITIAL (function)) | |
2118 | collect_block_tree_leafs (DECL_INITIAL (function), block_tree_leafs); | |
2119 | streamer_write_uhwi (ob, block_tree_leafs.length ()); | |
2120 | for (unsigned i = 0; i < block_tree_leafs.length (); ++i) | |
2121 | stream_write_tree (ob, block_tree_leafs[i], true); | |
d7f09764 | 2122 | |
815effe1 JH |
2123 | /* We also stream abstract functions where we stream only stuff needed for |
2124 | debug info. */ | |
2125 | if (gimple_has_body_p (function)) | |
2126 | { | |
d160ae78 RB |
2127 | /* Fixup loops if required to match discovery done in the reader. */ |
2128 | loop_optimizer_init (AVOID_CFG_MODIFICATIONS); | |
2129 | ||
815effe1 JH |
2130 | streamer_write_uhwi (ob, 1); |
2131 | output_struct_function_base (ob, fn); | |
2132 | ||
2133 | /* Output all the SSA names used in the function. */ | |
2134 | output_ssa_names (ob, fn); | |
2135 | ||
2136 | /* Output any exception handling regions. */ | |
2137 | output_eh_regions (ob, fn); | |
2138 | ||
2139 | ||
2140 | /* We will renumber the statements. The code that does this uses | |
2141 | the same ordering that we use for serializing them so we can use | |
2142 | the same code on the other end and not have to write out the | |
2143 | statement numbers. We do not assign UIDs to PHIs here because | |
2144 | virtual PHIs get re-computed on-the-fly which would make numbers | |
2145 | inconsistent. */ | |
2146 | set_gimple_stmt_max_uid (cfun, 0); | |
04a90bec | 2147 | FOR_ALL_BB_FN (bb, cfun) |
8f984534 | 2148 | { |
538dd0b7 DM |
2149 | for (gphi_iterator gsi = gsi_start_phis (bb); !gsi_end_p (gsi); |
2150 | gsi_next (&gsi)) | |
aa1e10cc | 2151 | { |
538dd0b7 | 2152 | gphi *stmt = gsi.phi (); |
aa1e10cc JH |
2153 | |
2154 | /* Virtual PHIs are not going to be streamed. */ | |
2155 | if (!virtual_operand_p (gimple_phi_result (stmt))) | |
2156 | gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); | |
2157 | } | |
538dd0b7 DM |
2158 | for (gimple_stmt_iterator gsi = gsi_start_bb (bb); !gsi_end_p (gsi); |
2159 | gsi_next (&gsi)) | |
815effe1 | 2160 | { |
355fe088 | 2161 | gimple *stmt = gsi_stmt (gsi); |
815effe1 JH |
2162 | gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); |
2163 | } | |
8f984534 | 2164 | } |
aa1e10cc JH |
2165 | /* To avoid keeping duplicate gimple IDs in the statements, renumber |
2166 | virtual phis now. */ | |
04a90bec | 2167 | FOR_ALL_BB_FN (bb, cfun) |
aa1e10cc | 2168 | { |
538dd0b7 DM |
2169 | for (gphi_iterator gsi = gsi_start_phis (bb); !gsi_end_p (gsi); |
2170 | gsi_next (&gsi)) | |
aa1e10cc | 2171 | { |
538dd0b7 | 2172 | gphi *stmt = gsi.phi (); |
aa1e10cc JH |
2173 | if (virtual_operand_p (gimple_phi_result (stmt))) |
2174 | gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); | |
2175 | } | |
2176 | } | |
d7f09764 | 2177 | |
815effe1 JH |
2178 | /* Output the code for the function. */ |
2179 | FOR_ALL_BB_FN (bb, fn) | |
2180 | output_bb (ob, bb, fn); | |
d7f09764 | 2181 | |
815effe1 JH |
2182 | /* The terminator for this function. */ |
2183 | streamer_write_record_start (ob, LTO_null); | |
d7f09764 | 2184 | |
815effe1 | 2185 | output_cfg (ob, fn); |
6b95d1af | 2186 | |
d160ae78 | 2187 | loop_optimizer_finalize (); |
6b95d1af | 2188 | pop_cfun (); |
815effe1 JH |
2189 | } |
2190 | else | |
2191 | streamer_write_uhwi (ob, 0); | |
d7f09764 DN |
2192 | |
2193 | /* Create a section to hold the pickled output of this function. */ | |
2194 | produce_asm (ob, function); | |
2195 | ||
2196 | destroy_output_block (ob); | |
b4da704c JH |
2197 | if (streamer_dump_file) |
2198 | fprintf (streamer_dump_file, "Finished streaming %s\n", | |
2199 | node->name ()); | |
d7f09764 DN |
2200 | } |
2201 | ||
0b83e688 JH |
2202 | /* Output the body of function NODE->DECL. */ |
2203 | ||
2204 | static void | |
2205 | output_constructor (struct varpool_node *node) | |
2206 | { | |
2207 | tree var = node->decl; | |
2208 | struct output_block *ob; | |
2209 | ||
b4da704c JH |
2210 | if (streamer_dump_file) |
2211 | fprintf (streamer_dump_file, "\nStreaming constructor of %s\n", | |
2212 | node->name ()); | |
2213 | ||
0b83e688 JH |
2214 | ob = create_output_block (LTO_section_function_body); |
2215 | ||
2216 | clear_line_info (ob); | |
2217 | ob->symbol = node; | |
2218 | ||
2219 | /* Make string 0 be a NULL string. */ | |
2220 | streamer_write_char_stream (ob->string_stream, 0); | |
2221 | ||
2222 | /* Output DECL_INITIAL for the function, which contains the tree of | |
2223 | lexical scopes. */ | |
2224 | stream_write_tree (ob, DECL_INITIAL (var), true); | |
2225 | ||
2226 | /* Create a section to hold the pickled output of this function. */ | |
2227 | produce_asm (ob, var); | |
2228 | ||
2229 | destroy_output_block (ob); | |
b4da704c JH |
2230 | if (streamer_dump_file) |
2231 | fprintf (streamer_dump_file, "Finished streaming %s\n", | |
2232 | node->name ()); | |
0b83e688 JH |
2233 | } |
2234 | ||
d7f09764 | 2235 | |
49f836ba JB |
2236 | /* Emit toplevel asms. */ |
2237 | ||
2238 | void | |
2239 | lto_output_toplevel_asms (void) | |
2240 | { | |
2241 | struct output_block *ob; | |
65d630d4 | 2242 | struct asm_node *can; |
49f836ba | 2243 | char *section_name; |
207c68cd | 2244 | struct lto_simple_header_with_strings header; |
49f836ba | 2245 | |
3dafb85c | 2246 | if (!symtab->first_asm_symbol ()) |
49f836ba JB |
2247 | return; |
2248 | ||
2249 | ob = create_output_block (LTO_section_asm); | |
2250 | ||
2251 | /* Make string 0 be a NULL string. */ | |
2252 | streamer_write_char_stream (ob->string_stream, 0); | |
2253 | ||
3dafb85c | 2254 | for (can = symtab->first_asm_symbol (); can; can = can->next) |
398f05da JH |
2255 | { |
2256 | streamer_write_string_cst (ob, ob->main_stream, can->asm_str); | |
2257 | streamer_write_hwi (ob, can->order); | |
2258 | } | |
49f836ba JB |
2259 | |
2260 | streamer_write_string_cst (ob, ob->main_stream, NULL_TREE); | |
2261 | ||
2262 | section_name = lto_get_section_name (LTO_section_asm, NULL, NULL); | |
2263 | lto_begin_section (section_name, !flag_wpa); | |
2264 | free (section_name); | |
2265 | ||
2266 | /* The entire header stream is computed here. */ | |
2267 | memset (&header, 0, sizeof (header)); | |
2268 | ||
2269 | /* Write the header. */ | |
207c68cd RB |
2270 | header.major_version = LTO_major_version; |
2271 | header.minor_version = LTO_minor_version; | |
49f836ba JB |
2272 | |
2273 | header.main_size = ob->main_stream->total_size; | |
2274 | header.string_size = ob->string_stream->total_size; | |
f6bcdb5e | 2275 | lto_write_data (&header, sizeof header); |
49f836ba JB |
2276 | |
2277 | /* Put all of the gimple and the string table out the asm file as a | |
2278 | block of text. */ | |
2279 | lto_write_stream (ob->main_stream); | |
2280 | lto_write_stream (ob->string_stream); | |
2281 | ||
2282 | lto_end_section (); | |
2283 | ||
2284 | destroy_output_block (ob); | |
2285 | } | |
2286 | ||
2287 | ||
0b83e688 | 2288 | /* Copy the function body or variable constructor of NODE without deserializing. */ |
d7f09764 DN |
2289 | |
2290 | static void | |
0b83e688 | 2291 | copy_function_or_variable (struct symtab_node *node) |
d7f09764 | 2292 | { |
67348ccc DM |
2293 | tree function = node->decl; |
2294 | struct lto_file_decl_data *file_data = node->lto_file_data; | |
d7f09764 DN |
2295 | const char *data; |
2296 | size_t len; | |
2297 | const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (function)); | |
91539475 | 2298 | char *section_name = |
73ce4d1e | 2299 | lto_get_section_name (LTO_section_function_body, name, NULL); |
d7f09764 DN |
2300 | size_t i, j; |
2301 | struct lto_in_decl_state *in_state; | |
91539475 | 2302 | struct lto_out_decl_state *out_state = lto_get_out_decl_state (); |
d7f09764 | 2303 | |
814f3331 JH |
2304 | if (streamer_dump_file) |
2305 | fprintf (streamer_dump_file, "Copying section for %s\n", name); | |
7fa658c2 | 2306 | lto_begin_section (section_name, false); |
d7f09764 DN |
2307 | free (section_name); |
2308 | ||
2309 | /* We may have renamed the declaration, e.g., a static function. */ | |
2310 | name = lto_get_decl_name_mapping (file_data, name); | |
2311 | ||
7fa658c2 JH |
2312 | data = lto_get_raw_section_data (file_data, LTO_section_function_body, |
2313 | name, &len); | |
d7f09764 DN |
2314 | gcc_assert (data); |
2315 | ||
2316 | /* Do a bit copy of the function body. */ | |
7fa658c2 | 2317 | lto_write_raw_data (data, len); |
d7f09764 DN |
2318 | |
2319 | /* Copy decls. */ | |
2320 | in_state = | |
67348ccc | 2321 | lto_get_function_in_decl_state (node->lto_file_data, function); |
7fa658c2 | 2322 | out_state->compressed = in_state->compressed; |
d7f09764 DN |
2323 | gcc_assert (in_state); |
2324 | ||
2325 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
2326 | { | |
9c71e9df TS |
2327 | size_t n = vec_safe_length (in_state->streams[i]); |
2328 | vec<tree, va_gc> *trees = in_state->streams[i]; | |
d7f09764 DN |
2329 | struct lto_tree_ref_encoder *encoder = &(out_state->streams[i]); |
2330 | ||
2331 | /* The out state must have the same indices and the in state. | |
2332 | So just copy the vector. All the encoders in the in state | |
2333 | must be empty where we reach here. */ | |
2334 | gcc_assert (lto_tree_ref_encoder_size (encoder) == 0); | |
d579fcda | 2335 | encoder->trees.reserve_exact (n); |
d7f09764 | 2336 | for (j = 0; j < n; j++) |
9c71e9df | 2337 | encoder->trees.safe_push ((*trees)[j]); |
d7f09764 | 2338 | } |
b8698a0f | 2339 | |
7fa658c2 JH |
2340 | lto_free_raw_section_data (file_data, LTO_section_function_body, name, |
2341 | data, len); | |
d7f09764 DN |
2342 | lto_end_section (); |
2343 | } | |
2344 | ||
8359c87e RB |
2345 | /* Wrap symbol references in *TP inside a type-preserving MEM_REF. */ |
2346 | ||
2347 | static tree | |
2348 | wrap_refs (tree *tp, int *ws, void *) | |
2349 | { | |
2350 | tree t = *tp; | |
2351 | if (handled_component_p (t) | |
35bd8e8f JH |
2352 | && TREE_CODE (TREE_OPERAND (t, 0)) == VAR_DECL |
2353 | && TREE_PUBLIC (TREE_OPERAND (t, 0))) | |
8359c87e RB |
2354 | { |
2355 | tree decl = TREE_OPERAND (t, 0); | |
2356 | tree ptrtype = build_pointer_type (TREE_TYPE (decl)); | |
2357 | TREE_OPERAND (t, 0) = build2 (MEM_REF, TREE_TYPE (decl), | |
2358 | build1 (ADDR_EXPR, ptrtype, decl), | |
2359 | build_int_cst (ptrtype, 0)); | |
2360 | TREE_THIS_VOLATILE (TREE_OPERAND (t, 0)) = TREE_THIS_VOLATILE (decl); | |
2361 | *ws = 0; | |
2362 | } | |
2363 | else if (TREE_CODE (t) == CONSTRUCTOR) | |
2364 | ; | |
2365 | else if (!EXPR_P (t)) | |
2366 | *ws = 0; | |
2367 | return NULL_TREE; | |
2368 | } | |
d7f09764 | 2369 | |
60bf575c TV |
2370 | /* Remove functions that are no longer used from offload_funcs, and mark the |
2371 | remaining ones with DECL_PRESERVE_P. */ | |
2372 | ||
2373 | static void | |
2374 | prune_offload_funcs (void) | |
2375 | { | |
2376 | if (!offload_funcs) | |
2377 | return; | |
2378 | ||
b94c2dc1 TV |
2379 | unsigned ix, ix2; |
2380 | tree *elem_ptr; | |
2381 | VEC_ORDERED_REMOVE_IF (*offload_funcs, ix, ix2, elem_ptr, | |
2382 | cgraph_node::get (*elem_ptr) == NULL); | |
2383 | ||
2384 | tree fn_decl; | |
2385 | FOR_EACH_VEC_ELT (*offload_funcs, ix, fn_decl) | |
2386 | DECL_PRESERVE_P (fn_decl) = 1; | |
60bf575c TV |
2387 | } |
2388 | ||
d7f09764 DN |
2389 | /* Main entry point from the pass manager. */ |
2390 | ||
38f4f02f | 2391 | void |
f27c1867 | 2392 | lto_output (void) |
d7f09764 | 2393 | { |
d7f09764 | 2394 | struct lto_out_decl_state *decl_state; |
b2b29377 | 2395 | bitmap output = NULL; |
91fbf0c7 | 2396 | int i, n_nodes; |
7380e6ef | 2397 | lto_symtab_encoder_t encoder = lto_get_out_decl_state ()->symtab_node_encoder; |
d7f09764 | 2398 | |
60bf575c TV |
2399 | prune_offload_funcs (); |
2400 | ||
b2b29377 MM |
2401 | if (flag_checking) |
2402 | output = lto_bitmap_alloc (); | |
2403 | ||
47c79d56 DN |
2404 | /* Initialize the streamer. */ |
2405 | lto_streamer_init (); | |
d7f09764 | 2406 | |
7380e6ef | 2407 | n_nodes = lto_symtab_encoder_size (encoder); |
d7f09764 | 2408 | /* Process only the functions with bodies. */ |
91fbf0c7 | 2409 | for (i = 0; i < n_nodes; i++) |
d7f09764 | 2410 | { |
5e20cdc9 | 2411 | symtab_node *snode = lto_symtab_encoder_deref (encoder, i); |
7de90a6c | 2412 | if (cgraph_node *node = dyn_cast <cgraph_node *> (snode)) |
d7f09764 | 2413 | { |
8359c87e | 2414 | if (lto_symtab_encoder_encode_body_p (encoder, node) |
150be262 | 2415 | && !node->alias |
199fb02a | 2416 | && (!node->thunk.thunk_p || !node->thunk.add_pointer_bounds_args)) |
8359c87e | 2417 | { |
b2b29377 MM |
2418 | if (flag_checking) |
2419 | { | |
2420 | gcc_assert (!bitmap_bit_p (output, DECL_UID (node->decl))); | |
2421 | bitmap_set_bit (output, DECL_UID (node->decl)); | |
2422 | } | |
8359c87e RB |
2423 | decl_state = lto_new_out_decl_state (); |
2424 | lto_push_out_decl_state (decl_state); | |
2a58bcf2 JH |
2425 | if (gimple_has_body_p (node->decl) |
2426 | || (!flag_wpa | |
2427 | && flag_incremental_link != INCREMENTAL_LINK_LTO) | |
48fb6d40 JH |
2428 | /* Thunks have no body but they may be synthetized |
2429 | at WPA time. */ | |
2430 | || DECL_ARGUMENTS (node->decl)) | |
8359c87e RB |
2431 | output_function (node); |
2432 | else | |
0b83e688 | 2433 | copy_function_or_variable (node); |
8359c87e RB |
2434 | gcc_assert (lto_get_out_decl_state () == decl_state); |
2435 | lto_pop_out_decl_state (); | |
2436 | lto_record_function_out_decl_state (node->decl, decl_state); | |
2437 | } | |
2438 | } | |
7de90a6c | 2439 | else if (varpool_node *node = dyn_cast <varpool_node *> (snode)) |
8359c87e RB |
2440 | { |
2441 | /* Wrap symbol references inside the ctor in a type | |
2442 | preserving MEM_REF. */ | |
2443 | tree ctor = DECL_INITIAL (node->decl); | |
2444 | if (ctor && !in_lto_p) | |
2445 | walk_tree (&ctor, wrap_refs, NULL, NULL); | |
0b83e688 JH |
2446 | if (get_symbol_initial_value (encoder, node->decl) == error_mark_node |
2447 | && lto_symtab_encoder_encode_initializer_p (encoder, node) | |
2448 | && !node->alias) | |
2449 | { | |
917dd9bf | 2450 | timevar_push (TV_IPA_LTO_CTORS_OUT); |
b2b29377 MM |
2451 | if (flag_checking) |
2452 | { | |
2453 | gcc_assert (!bitmap_bit_p (output, DECL_UID (node->decl))); | |
2454 | bitmap_set_bit (output, DECL_UID (node->decl)); | |
2455 | } | |
0b83e688 JH |
2456 | decl_state = lto_new_out_decl_state (); |
2457 | lto_push_out_decl_state (decl_state); | |
2458 | if (DECL_INITIAL (node->decl) != error_mark_node | |
2a58bcf2 JH |
2459 | || (!flag_wpa |
2460 | && flag_incremental_link != INCREMENTAL_LINK_LTO)) | |
0b83e688 JH |
2461 | output_constructor (node); |
2462 | else | |
2463 | copy_function_or_variable (node); | |
2464 | gcc_assert (lto_get_out_decl_state () == decl_state); | |
2465 | lto_pop_out_decl_state (); | |
2466 | lto_record_function_out_decl_state (node->decl, decl_state); | |
917dd9bf | 2467 | timevar_pop (TV_IPA_LTO_CTORS_OUT); |
0b83e688 | 2468 | } |
d7f09764 DN |
2469 | } |
2470 | } | |
2471 | ||
2472 | /* Emit the callgraph after emitting function bodies. This needs to | |
2473 | be done now to make sure that all the statements in every function | |
2474 | have been renumbered so that edges can be associated with call | |
2475 | statements using the statement UIDs. */ | |
f27c1867 | 2476 | output_symtab (); |
d7f09764 | 2477 | |
ec6fe917 IV |
2478 | output_offload_tables (); |
2479 | ||
b2b29377 | 2480 | #if CHECKING_P |
d7f09764 | 2481 | lto_bitmap_free (output); |
18252dcf | 2482 | #endif |
d7f09764 DN |
2483 | } |
2484 | ||
b8698a0f | 2485 | /* Write each node in encoded by ENCODER to OB, as well as those reachable |
d7f09764 DN |
2486 | from it and required for correct representation of its semantics. |
2487 | Each node in ENCODER must be a global declaration or a type. A node | |
2488 | is written only once, even if it appears multiple times in the | |
2489 | vector. Certain transitively-reachable nodes, such as those | |
2490 | representing expressions, may be duplicated, but such nodes | |
2491 | must not appear in ENCODER itself. */ | |
2492 | ||
2493 | static void | |
2494 | write_global_stream (struct output_block *ob, | |
2495 | struct lto_tree_ref_encoder *encoder) | |
2496 | { | |
2497 | tree t; | |
2498 | size_t index; | |
2499 | const size_t size = lto_tree_ref_encoder_size (encoder); | |
2500 | ||
2501 | for (index = 0; index < size; index++) | |
2502 | { | |
2503 | t = lto_tree_ref_encoder_get_tree (encoder, index); | |
b4da704c JH |
2504 | if (streamer_dump_file) |
2505 | { | |
2506 | fprintf (streamer_dump_file, " %i:", (int)index); | |
2507 | print_node_brief (streamer_dump_file, "", t, 4); | |
2508 | fprintf (streamer_dump_file, "\n"); | |
2509 | } | |
412288f1 | 2510 | if (!streamer_tree_cache_lookup (ob->writer_cache, t, NULL)) |
b9393656 | 2511 | stream_write_tree (ob, t, false); |
d7f09764 DN |
2512 | } |
2513 | } | |
2514 | ||
2515 | ||
2516 | /* Write a sequence of indices into the globals vector corresponding | |
2517 | to the trees in ENCODER. These are used by the reader to map the | |
2518 | indices used to refer to global entities within function bodies to | |
2519 | their referents. */ | |
2520 | ||
2521 | static void | |
2522 | write_global_references (struct output_block *ob, | |
d7f09764 DN |
2523 | struct lto_tree_ref_encoder *encoder) |
2524 | { | |
2525 | tree t; | |
e89964e3 MM |
2526 | uint32_t index; |
2527 | const uint32_t size = lto_tree_ref_encoder_size (encoder); | |
d7f09764 | 2528 | |
f6bcdb5e RB |
2529 | /* Write size and slot indexes as 32-bit unsigned numbers. */ |
2530 | uint32_t *data = XNEWVEC (uint32_t, size + 1); | |
2531 | data[0] = size; | |
d7f09764 DN |
2532 | |
2533 | for (index = 0; index < size; index++) | |
2534 | { | |
83b4db6d | 2535 | unsigned slot_num; |
d7f09764 DN |
2536 | |
2537 | t = lto_tree_ref_encoder_get_tree (encoder, index); | |
412288f1 | 2538 | streamer_tree_cache_lookup (ob->writer_cache, t, &slot_num); |
e89964e3 | 2539 | gcc_assert (slot_num != (unsigned)-1); |
f6bcdb5e | 2540 | data[index + 1] = slot_num; |
d7f09764 | 2541 | } |
f6bcdb5e RB |
2542 | |
2543 | lto_write_data (data, sizeof (int32_t) * (size + 1)); | |
2544 | free (data); | |
d7f09764 DN |
2545 | } |
2546 | ||
2547 | ||
2548 | /* Write all the streams in an lto_out_decl_state STATE using | |
2549 | output block OB and output stream OUT_STREAM. */ | |
2550 | ||
a183b5c7 | 2551 | void |
d7f09764 DN |
2552 | lto_output_decl_state_streams (struct output_block *ob, |
2553 | struct lto_out_decl_state *state) | |
2554 | { | |
2555 | int i; | |
2556 | ||
2557 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
2558 | write_global_stream (ob, &state->streams[i]); | |
2559 | } | |
2560 | ||
2561 | ||
2562 | /* Write all the references in an lto_out_decl_state STATE using | |
2563 | output block OB and output stream OUT_STREAM. */ | |
2564 | ||
a183b5c7 | 2565 | void |
d7f09764 | 2566 | lto_output_decl_state_refs (struct output_block *ob, |
d7f09764 DN |
2567 | struct lto_out_decl_state *state) |
2568 | { | |
2569 | unsigned i; | |
83b4db6d | 2570 | unsigned ref; |
d7f09764 | 2571 | tree decl; |
b8698a0f | 2572 | |
d7f09764 DN |
2573 | /* Write reference to FUNCTION_DECL. If there is not function, |
2574 | write reference to void_type_node. */ | |
2575 | decl = (state->fn_decl) ? state->fn_decl : void_type_node; | |
412288f1 | 2576 | streamer_tree_cache_lookup (ob->writer_cache, decl, &ref); |
e89964e3 | 2577 | gcc_assert (ref != (unsigned)-1); |
7fa658c2 | 2578 | ref = ref * 2 + (state->compressed ? 1 : 0); |
f6bcdb5e | 2579 | lto_write_data (&ref, sizeof (uint32_t)); |
d7f09764 DN |
2580 | |
2581 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
f6bcdb5e | 2582 | write_global_references (ob, &state->streams[i]); |
d7f09764 DN |
2583 | } |
2584 | ||
2585 | ||
2586 | /* Return the written size of STATE. */ | |
2587 | ||
2588 | static size_t | |
2589 | lto_out_decl_state_written_size (struct lto_out_decl_state *state) | |
2590 | { | |
2591 | int i; | |
2592 | size_t size; | |
2593 | ||
2594 | size = sizeof (int32_t); /* fn_ref. */ | |
2595 | for (i = 0; i < LTO_N_DECL_STREAMS; i++) | |
2596 | { | |
2597 | size += sizeof (int32_t); /* vector size. */ | |
2598 | size += (lto_tree_ref_encoder_size (&state->streams[i]) | |
2599 | * sizeof (int32_t)); | |
2600 | } | |
2601 | return size; | |
2602 | } | |
2603 | ||
2604 | ||
695c3817 JH |
2605 | /* Write symbol T into STREAM in CACHE. SEEN specifies symbols we wrote |
2606 | so far. */ | |
c5d1f058 JH |
2607 | |
2608 | static void | |
412288f1 | 2609 | write_symbol (struct streamer_tree_cache_d *cache, |
6e2830c3 | 2610 | tree t, hash_set<const char *> *seen, bool alias) |
c5d1f058 JH |
2611 | { |
2612 | const char *name; | |
2613 | enum gcc_plugin_symbol_kind kind; | |
083e891e | 2614 | enum gcc_plugin_symbol_visibility visibility = GCCPV_DEFAULT; |
e89964e3 | 2615 | unsigned slot_num; |
a9243bfc | 2616 | uint64_t size; |
c5d1f058 | 2617 | const char *comdat; |
7d58701c | 2618 | unsigned char c; |
c5d1f058 | 2619 | |
39aa9b23 | 2620 | gcc_checking_assert (TREE_PUBLIC (t) |
3d78e008 ML |
2621 | && (TREE_CODE (t) != FUNCTION_DECL |
2622 | || !fndecl_built_in_p (t)) | |
39aa9b23 JH |
2623 | && !DECL_ABSTRACT_P (t) |
2624 | && (!VAR_P (t) || !DECL_HARD_REGISTER (t))); | |
c5d1f058 | 2625 | |
8813a647 | 2626 | gcc_assert (VAR_OR_FUNCTION_DECL_P (t)); |
c5d1f058 JH |
2627 | |
2628 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (t)); | |
2629 | ||
77754180 DK |
2630 | /* This behaves like assemble_name_raw in varasm.c, performing the |
2631 | same name manipulations that ASM_OUTPUT_LABELREF does. */ | |
2632 | name = IDENTIFIER_POINTER ((*targetm.asm_out.mangle_assembler_name) (name)); | |
2633 | ||
6e2830c3 | 2634 | if (seen->add (name)) |
695c3817 | 2635 | return; |
695c3817 | 2636 | |
412288f1 | 2637 | streamer_tree_cache_lookup (cache, t, &slot_num); |
e89964e3 | 2638 | gcc_assert (slot_num != (unsigned)-1); |
c5d1f058 | 2639 | |
c5d1f058 | 2640 | if (DECL_EXTERNAL (t)) |
d7f09764 | 2641 | { |
c5d1f058 JH |
2642 | if (DECL_WEAK (t)) |
2643 | kind = GCCPK_WEAKUNDEF; | |
d7f09764 | 2644 | else |
c5d1f058 JH |
2645 | kind = GCCPK_UNDEF; |
2646 | } | |
2647 | else | |
2648 | { | |
2649 | if (DECL_WEAK (t)) | |
2650 | kind = GCCPK_WEAKDEF; | |
2651 | else if (DECL_COMMON (t)) | |
2652 | kind = GCCPK_COMMON; | |
d7f09764 | 2653 | else |
c5d1f058 JH |
2654 | kind = GCCPK_DEF; |
2655 | ||
695c3817 | 2656 | /* When something is defined, it should have node attached. */ |
8813a647 | 2657 | gcc_assert (alias || !VAR_P (t) || varpool_node::get (t)->definition); |
c5d1f058 | 2658 | gcc_assert (alias || TREE_CODE (t) != FUNCTION_DECL |
d52f5295 ML |
2659 | || (cgraph_node::get (t) |
2660 | && cgraph_node::get (t)->definition)); | |
d7f09764 | 2661 | } |
d7f09764 | 2662 | |
5d7f4d9c JH |
2663 | /* Imitate what default_elf_asm_output_external do. |
2664 | When symbol is external, we need to output it with DEFAULT visibility | |
2665 | when compiling with -fvisibility=default, while with HIDDEN visibility | |
2666 | when symbol has attribute (visibility("hidden")) specified. | |
2667 | targetm.binds_local_p check DECL_VISIBILITY_SPECIFIED and gets this | |
2668 | right. */ | |
4ad9a9de | 2669 | |
5d7f4d9c JH |
2670 | if (DECL_EXTERNAL (t) |
2671 | && !targetm.binds_local_p (t)) | |
2672 | visibility = GCCPV_DEFAULT; | |
2673 | else | |
c3284718 | 2674 | switch (DECL_VISIBILITY (t)) |
5d7f4d9c JH |
2675 | { |
2676 | case VISIBILITY_DEFAULT: | |
2677 | visibility = GCCPV_DEFAULT; | |
2678 | break; | |
2679 | case VISIBILITY_PROTECTED: | |
2680 | visibility = GCCPV_PROTECTED; | |
2681 | break; | |
2682 | case VISIBILITY_HIDDEN: | |
2683 | visibility = GCCPV_HIDDEN; | |
2684 | break; | |
2685 | case VISIBILITY_INTERNAL: | |
2686 | visibility = GCCPV_INTERNAL; | |
2687 | break; | |
2688 | } | |
d7f09764 | 2689 | |
c5d1f058 | 2690 | if (kind == GCCPK_COMMON |
4ad9a9de EB |
2691 | && DECL_SIZE_UNIT (t) |
2692 | && TREE_CODE (DECL_SIZE_UNIT (t)) == INTEGER_CST) | |
2693 | size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (t)); | |
c5d1f058 JH |
2694 | else |
2695 | size = 0; | |
2696 | ||
2697 | if (DECL_ONE_ONLY (t)) | |
d67ff7b7 | 2698 | comdat = IDENTIFIER_POINTER (decl_comdat_group_id (t)); |
c5d1f058 JH |
2699 | else |
2700 | comdat = ""; | |
2701 | ||
f6bcdb5e RB |
2702 | lto_write_data (name, strlen (name) + 1); |
2703 | lto_write_data (comdat, strlen (comdat) + 1); | |
7d58701c | 2704 | c = (unsigned char) kind; |
f6bcdb5e | 2705 | lto_write_data (&c, 1); |
7d58701c | 2706 | c = (unsigned char) visibility; |
f6bcdb5e RB |
2707 | lto_write_data (&c, 1); |
2708 | lto_write_data (&size, 8); | |
2709 | lto_write_data (&slot_num, 4); | |
d7f09764 DN |
2710 | } |
2711 | ||
c5d1f058 JH |
2712 | /* Write an IL symbol table to OB. |
2713 | SET and VSET are cgraph/varpool node sets we are outputting. */ | |
d7f09764 DN |
2714 | |
2715 | static void | |
877ab5e9 | 2716 | produce_symtab (struct output_block *ob) |
d7f09764 | 2717 | { |
412288f1 | 2718 | struct streamer_tree_cache_d *cache = ob->writer_cache; |
73ce4d1e | 2719 | char *section_name = lto_get_section_name (LTO_section_symtab, NULL, NULL); |
7380e6ef | 2720 | lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder; |
c2954538 | 2721 | lto_symtab_encoder_iterator lsei; |
d7f09764 DN |
2722 | |
2723 | lto_begin_section (section_name, false); | |
2724 | free (section_name); | |
2725 | ||
6e2830c3 | 2726 | hash_set<const char *> seen; |
c5d1f058 | 2727 | |
c2954538 JH |
2728 | /* Write the symbol table. |
2729 | First write everything defined and then all declarations. | |
1aa95df7 | 2730 | This is necessary to handle cases where we have duplicated symbols. */ |
c2954538 JH |
2731 | for (lsei = lsei_start (encoder); |
2732 | !lsei_end_p (lsei); lsei_next (&lsei)) | |
c5d1f058 | 2733 | { |
5e20cdc9 | 2734 | symtab_node *node = lsei_node (lsei); |
c2954538 | 2735 | |
39aa9b23 | 2736 | if (DECL_EXTERNAL (node->decl) || !node->output_to_lto_symbol_table_p ()) |
695c3817 | 2737 | continue; |
6e2830c3 | 2738 | write_symbol (cache, node->decl, &seen, false); |
695c3817 | 2739 | } |
c2954538 JH |
2740 | for (lsei = lsei_start (encoder); |
2741 | !lsei_end_p (lsei); lsei_next (&lsei)) | |
695c3817 | 2742 | { |
5e20cdc9 | 2743 | symtab_node *node = lsei_node (lsei); |
c5d1f058 | 2744 | |
39aa9b23 | 2745 | if (!DECL_EXTERNAL (node->decl) || !node->output_to_lto_symbol_table_p ()) |
695c3817 | 2746 | continue; |
6e2830c3 | 2747 | write_symbol (cache, node->decl, &seen, false); |
c5d1f058 JH |
2748 | } |
2749 | ||
d7f09764 DN |
2750 | lto_end_section (); |
2751 | } | |
2752 | ||
2753 | ||
db847fa8 JJ |
2754 | /* Init the streamer_mode_table for output, where we collect info on what |
2755 | machine_mode values have been streamed. */ | |
2756 | void | |
2757 | lto_output_init_mode_table (void) | |
2758 | { | |
2759 | memset (streamer_mode_table, '\0', MAX_MACHINE_MODE); | |
2760 | } | |
2761 | ||
2762 | ||
2763 | /* Write the mode table. */ | |
2764 | static void | |
2765 | lto_write_mode_table (void) | |
2766 | { | |
2767 | struct output_block *ob; | |
2768 | ob = create_output_block (LTO_section_mode_table); | |
2769 | bitpack_d bp = bitpack_create (ob->main_stream); | |
2770 | ||
96a2d174 | 2771 | /* Ensure that for GET_MODE_INNER (m) != m we have |
db847fa8 JJ |
2772 | also the inner mode marked. */ |
2773 | for (int i = 0; i < (int) MAX_MACHINE_MODE; i++) | |
2774 | if (streamer_mode_table[i]) | |
2775 | { | |
2776 | machine_mode m = (machine_mode) i; | |
40f683e8 RB |
2777 | machine_mode inner_m = GET_MODE_INNER (m); |
2778 | if (inner_m != m) | |
2779 | streamer_mode_table[(int) inner_m] = 1; | |
db847fa8 | 2780 | } |
96a2d174 | 2781 | /* First stream modes that have GET_MODE_INNER (m) == m, |
db847fa8 JJ |
2782 | so that we can refer to them afterwards. */ |
2783 | for (int pass = 0; pass < 2; pass++) | |
2784 | for (int i = 0; i < (int) MAX_MACHINE_MODE; i++) | |
2785 | if (streamer_mode_table[i] && i != (int) VOIDmode && i != (int) BLKmode) | |
2786 | { | |
2787 | machine_mode m = (machine_mode) i; | |
1c0e448f | 2788 | if ((GET_MODE_INNER (m) == m) ^ (pass == 0)) |
db847fa8 JJ |
2789 | continue; |
2790 | bp_pack_value (&bp, m, 8); | |
2791 | bp_pack_enum (&bp, mode_class, MAX_MODE_CLASS, GET_MODE_CLASS (m)); | |
cf098191 | 2792 | bp_pack_poly_value (&bp, GET_MODE_SIZE (m), 16); |
bb94ec76 | 2793 | bp_pack_poly_value (&bp, GET_MODE_PRECISION (m), 16); |
db847fa8 | 2794 | bp_pack_value (&bp, GET_MODE_INNER (m), 8); |
7b777afa | 2795 | bp_pack_poly_value (&bp, GET_MODE_NUNITS (m), 16); |
db847fa8 JJ |
2796 | switch (GET_MODE_CLASS (m)) |
2797 | { | |
2798 | case MODE_FRACT: | |
2799 | case MODE_UFRACT: | |
2800 | case MODE_ACCUM: | |
2801 | case MODE_UACCUM: | |
2802 | bp_pack_value (&bp, GET_MODE_IBIT (m), 8); | |
2803 | bp_pack_value (&bp, GET_MODE_FBIT (m), 8); | |
2804 | break; | |
2805 | case MODE_FLOAT: | |
2806 | case MODE_DECIMAL_FLOAT: | |
2807 | bp_pack_string (ob, &bp, REAL_MODE_FORMAT (m)->name, true); | |
2808 | break; | |
2809 | default: | |
2810 | break; | |
2811 | } | |
2812 | bp_pack_string (ob, &bp, GET_MODE_NAME (m), true); | |
2813 | } | |
2814 | bp_pack_value (&bp, VOIDmode, 8); | |
2815 | ||
2816 | streamer_write_bitpack (&bp); | |
2817 | ||
2818 | char *section_name | |
2819 | = lto_get_section_name (LTO_section_mode_table, NULL, NULL); | |
2820 | lto_begin_section (section_name, !flag_wpa); | |
2821 | free (section_name); | |
2822 | ||
2823 | /* The entire header stream is computed here. */ | |
2824 | struct lto_simple_header_with_strings header; | |
2825 | memset (&header, 0, sizeof (header)); | |
2826 | ||
2827 | /* Write the header. */ | |
2828 | header.major_version = LTO_major_version; | |
2829 | header.minor_version = LTO_minor_version; | |
2830 | ||
2831 | header.main_size = ob->main_stream->total_size; | |
2832 | header.string_size = ob->string_stream->total_size; | |
2833 | lto_write_data (&header, sizeof header); | |
2834 | ||
2835 | /* Put all of the gimple and the string table out the asm file as a | |
2836 | block of text. */ | |
2837 | lto_write_stream (ob->main_stream); | |
2838 | lto_write_stream (ob->string_stream); | |
2839 | ||
2840 | lto_end_section (); | |
2841 | destroy_output_block (ob); | |
2842 | } | |
2843 | ||
2844 | ||
d7f09764 DN |
2845 | /* This pass is run after all of the functions are serialized and all |
2846 | of the IPA passes have written their serialized forms. This pass | |
2847 | causes the vector of all of the global decls and types used from | |
2848 | this file to be written in to a section that can then be read in to | |
2849 | recover these on other side. */ | |
2850 | ||
38f4f02f | 2851 | void |
f27c1867 | 2852 | produce_asm_for_decls (void) |
d7f09764 DN |
2853 | { |
2854 | struct lto_out_decl_state *out_state; | |
2855 | struct lto_out_decl_state *fn_out_state; | |
2856 | struct lto_decl_header header; | |
2857 | char *section_name; | |
2858 | struct output_block *ob; | |
d7f09764 DN |
2859 | unsigned idx, num_fns; |
2860 | size_t decl_state_size; | |
2861 | int32_t num_decl_states; | |
2862 | ||
2863 | ob = create_output_block (LTO_section_decls); | |
d7f09764 | 2864 | |
b8698a0f | 2865 | memset (&header, 0, sizeof (struct lto_decl_header)); |
d7f09764 | 2866 | |
73ce4d1e | 2867 | section_name = lto_get_section_name (LTO_section_decls, NULL, NULL); |
d7f09764 DN |
2868 | lto_begin_section (section_name, !flag_wpa); |
2869 | free (section_name); | |
2870 | ||
2871 | /* Make string 0 be a NULL string. */ | |
412288f1 | 2872 | streamer_write_char_stream (ob->string_stream, 0); |
d7f09764 | 2873 | |
877ab5e9 JH |
2874 | gcc_assert (!alias_pairs); |
2875 | ||
bdc67fd6 | 2876 | /* Get rid of the global decl state hash tables to save some memory. */ |
d7f09764 | 2877 | out_state = lto_get_out_decl_state (); |
bdc67fd6 RB |
2878 | for (int i = 0; i < LTO_N_DECL_STREAMS; i++) |
2879 | if (out_state->streams[i].tree_hash_table) | |
2880 | { | |
2881 | delete out_state->streams[i].tree_hash_table; | |
2882 | out_state->streams[i].tree_hash_table = NULL; | |
2883 | } | |
2884 | ||
2885 | /* Write the global symbols. */ | |
b4da704c JH |
2886 | if (streamer_dump_file) |
2887 | fprintf (streamer_dump_file, "Outputting global stream\n"); | |
d7f09764 | 2888 | lto_output_decl_state_streams (ob, out_state); |
bdc67fd6 | 2889 | num_fns = lto_function_decl_states.length (); |
d7f09764 DN |
2890 | for (idx = 0; idx < num_fns; idx++) |
2891 | { | |
2892 | fn_out_state = | |
9771b263 | 2893 | lto_function_decl_states[idx]; |
b4da704c JH |
2894 | if (streamer_dump_file) |
2895 | fprintf (streamer_dump_file, "Outputting stream for %s\n", | |
2896 | IDENTIFIER_POINTER | |
2897 | (DECL_ASSEMBLER_NAME (fn_out_state->fn_decl))); | |
d7f09764 DN |
2898 | lto_output_decl_state_streams (ob, fn_out_state); |
2899 | } | |
2900 | ||
207c68cd RB |
2901 | header.major_version = LTO_major_version; |
2902 | header.minor_version = LTO_minor_version; | |
d7f09764 DN |
2903 | |
2904 | /* Currently not used. This field would allow us to preallocate | |
2905 | the globals vector, so that it need not be resized as it is extended. */ | |
2906 | header.num_nodes = -1; | |
2907 | ||
2908 | /* Compute the total size of all decl out states. */ | |
2909 | decl_state_size = sizeof (int32_t); | |
2910 | decl_state_size += lto_out_decl_state_written_size (out_state); | |
2911 | for (idx = 0; idx < num_fns; idx++) | |
2912 | { | |
2913 | fn_out_state = | |
9771b263 | 2914 | lto_function_decl_states[idx]; |
d7f09764 DN |
2915 | decl_state_size += lto_out_decl_state_written_size (fn_out_state); |
2916 | } | |
2917 | header.decl_state_size = decl_state_size; | |
2918 | ||
2919 | header.main_size = ob->main_stream->total_size; | |
2920 | header.string_size = ob->string_stream->total_size; | |
2921 | ||
f6bcdb5e | 2922 | lto_write_data (&header, sizeof header); |
b8698a0f | 2923 | |
d7f09764 DN |
2924 | /* Write the main out-decl state, followed by out-decl states of |
2925 | functions. */ | |
d7f09764 | 2926 | num_decl_states = num_fns + 1; |
f6bcdb5e RB |
2927 | lto_write_data (&num_decl_states, sizeof (num_decl_states)); |
2928 | lto_output_decl_state_refs (ob, out_state); | |
d7f09764 DN |
2929 | for (idx = 0; idx < num_fns; idx++) |
2930 | { | |
f6bcdb5e RB |
2931 | fn_out_state = lto_function_decl_states[idx]; |
2932 | lto_output_decl_state_refs (ob, fn_out_state); | |
d7f09764 | 2933 | } |
d7f09764 DN |
2934 | |
2935 | lto_write_stream (ob->main_stream); | |
2936 | lto_write_stream (ob->string_stream); | |
2937 | ||
2938 | lto_end_section (); | |
2939 | ||
c5d1f058 JH |
2940 | /* Write the symbol table. It is used by linker to determine dependencies |
2941 | and thus we can skip it for WPA. */ | |
2942 | if (!flag_wpa) | |
877ab5e9 | 2943 | produce_symtab (ob); |
d7f09764 DN |
2944 | |
2945 | /* Write command line opts. */ | |
2946 | lto_write_options (); | |
2947 | ||
2948 | /* Deallocate memory and clean up. */ | |
6cd174f6 JH |
2949 | for (idx = 0; idx < num_fns; idx++) |
2950 | { | |
2951 | fn_out_state = | |
9771b263 | 2952 | lto_function_decl_states[idx]; |
6cd174f6 JH |
2953 | lto_delete_out_decl_state (fn_out_state); |
2954 | } | |
7380e6ef | 2955 | lto_symtab_encoder_delete (ob->decl_state->symtab_node_encoder); |
9771b263 | 2956 | lto_function_decl_states.release (); |
d7f09764 | 2957 | destroy_output_block (ob); |
db847fa8 JJ |
2958 | if (lto_stream_offload_p) |
2959 | lto_write_mode_table (); | |
d7f09764 | 2960 | } |