1 /* Write the GIMPLE representation to a file stream.
3 Copyright 2009, 2010 Free Software Foundation, Inc.
4 Contributed by Kenneth Zadeck <zadeck@naturalbridge.com>
5 Re-implemented by Diego Novillo <dnovillo@google.com>
7 This file is part of GCC.
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
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
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/>. */
25 #include "coretypes.h"
34 #include "basic-block.h"
35 #include "tree-flow.h"
36 #include "tree-pass.h"
40 #include "diagnostic.h"
43 #include "lto-symtab.h"
44 #include "lto-streamer.h"
51 unsigned int slot_num;
55 /* Returns a hash code for P. */
58 hash_string_slot_node (const void *p)
60 const struct string_slot *ds = (const struct string_slot *) p;
61 return (hashval_t) htab_hash_string (ds->s);
65 /* Returns nonzero if P1 and P2 are equal. */
68 eq_string_slot_node (const void *p1, const void *p2)
70 const struct string_slot *ds1 = (const struct string_slot *) p1;
71 const struct string_slot *ds2 = (const struct string_slot *) p2;
73 if (ds1->len == ds2->len)
76 for (i = 0; i < ds1->len; i++)
77 if (ds1->s[i] != ds2->s[i])
86 /* Free the string slot pointed-to by P. */
89 string_slot_free (void *p)
91 struct string_slot *slot = (struct string_slot *) p;
92 free (CONST_CAST (void *, (const void *) slot->s));
97 /* Clear the line info stored in DATA_IN. */
100 clear_line_info (struct output_block *ob)
102 ob->current_file = NULL;
103 ob->current_line = 0;
108 /* Create the output block and return it. SECTION_TYPE is
109 LTO_section_function_body or LTO_static_initializer. */
111 struct output_block *
112 create_output_block (enum lto_section_type section_type)
114 struct output_block *ob = XCNEW (struct output_block);
116 ob->section_type = section_type;
117 ob->decl_state = lto_get_out_decl_state ();
118 ob->main_stream = XCNEW (struct lto_output_stream);
119 ob->string_stream = XCNEW (struct lto_output_stream);
120 ob->writer_cache = lto_streamer_cache_create ();
122 if (section_type == LTO_section_function_body)
123 ob->cfg_stream = XCNEW (struct lto_output_stream);
125 clear_line_info (ob);
127 ob->string_hash_table = htab_create (37, hash_string_slot_node,
128 eq_string_slot_node, string_slot_free);
134 /* Destroy the output block OB. */
137 destroy_output_block (struct output_block *ob)
139 enum lto_section_type section_type = ob->section_type;
141 htab_delete (ob->string_hash_table);
143 free (ob->main_stream);
144 free (ob->string_stream);
145 if (section_type == LTO_section_function_body)
146 free (ob->cfg_stream);
148 lto_streamer_cache_delete (ob->writer_cache);
154 /* Output bitpack BP to output stream S. */
157 lto_output_bitpack (struct lto_output_stream *s, struct bitpack_d *bp)
162 lto_output_uleb128_stream (s, VEC_length (bitpack_word_t, bp->values));
163 for (i = 0; VEC_iterate (bitpack_word_t, bp->values, i, v); i++)
164 lto_output_uleb128_stream (s, v);
168 /* Output STRING of LEN characters to the string
169 table in OB. The string might or might not include a trailing '\0'.
170 Then put the index onto the INDEX_STREAM. */
173 output_string_with_length (struct output_block *ob,
174 struct lto_output_stream *index_stream,
178 struct string_slot **slot;
179 struct string_slot s_slot;
180 char *string = (char *) xmalloc (len + 1);
181 memcpy (string, s, len);
188 slot = (struct string_slot **) htab_find_slot (ob->string_hash_table,
192 struct lto_output_stream *string_stream = ob->string_stream;
193 unsigned int start = string_stream->total_size;
194 struct string_slot *new_slot
195 = (struct string_slot *) xmalloc (sizeof (struct string_slot));
198 new_slot->s = string;
200 new_slot->slot_num = start;
202 lto_output_uleb128_stream (index_stream, start);
203 lto_output_uleb128_stream (string_stream, len);
204 for (i = 0; i < len; i++)
205 lto_output_1_stream (string_stream, string[i]);
209 struct string_slot *old_slot = (struct string_slot *)*slot;
210 lto_output_uleb128_stream (index_stream, old_slot->slot_num);
215 /* Output the '\0' terminated STRING to the string
216 table in OB. Then put the index onto the INDEX_STREAM. */
219 output_string (struct output_block *ob,
220 struct lto_output_stream *index_stream,
225 lto_output_uleb128_stream (index_stream, 0);
226 output_string_with_length (ob, index_stream, string, strlen (string) + 1);
229 lto_output_uleb128_stream (index_stream, 1);
233 /* Output the STRING constant to the string
234 table in OB. Then put the index onto the INDEX_STREAM. */
237 output_string_cst (struct output_block *ob,
238 struct lto_output_stream *index_stream,
243 lto_output_uleb128_stream (index_stream, 0);
244 output_string_with_length (ob, index_stream,
245 TREE_STRING_POINTER (string),
246 TREE_STRING_LENGTH (string));
249 lto_output_uleb128_stream (index_stream, 1);
253 /* Output the identifier ID to the string
254 table in OB. Then put the index onto the INDEX_STREAM. */
257 output_identifier (struct output_block *ob,
258 struct lto_output_stream *index_stream,
263 lto_output_uleb128_stream (index_stream, 0);
264 output_string_with_length (ob, index_stream,
265 IDENTIFIER_POINTER (id),
266 IDENTIFIER_LENGTH (id));
269 lto_output_uleb128_stream (index_stream, 1);
272 /* Write a zero to the output stream. */
275 output_zero (struct output_block *ob)
277 lto_output_1_stream (ob->main_stream, 0);
281 /* Output an unsigned LEB128 quantity to OB->main_stream. */
284 output_uleb128 (struct output_block *ob, unsigned HOST_WIDE_INT work)
286 lto_output_uleb128_stream (ob->main_stream, work);
290 /* Output a signed LEB128 quantity to OB->main_stream. */
293 output_sleb128 (struct output_block *ob, HOST_WIDE_INT work)
295 lto_output_sleb128_stream (ob->main_stream, work);
299 /* Output the start of a record with TAG to output block OB. */
302 output_record_start (struct output_block *ob, enum LTO_tags tag)
304 /* Make sure TAG fits inside an unsigned int. */
305 gcc_assert (tag == (enum LTO_tags) (unsigned) tag);
306 output_uleb128 (ob, tag);
310 /* Look up NODE in the type table and write the index for it to OB. */
313 output_type_ref (struct output_block *ob, tree node)
315 output_record_start (ob, LTO_type_ref);
316 lto_output_type_ref_index (ob->decl_state, ob->main_stream, node);
320 /* Pack all the non-pointer fields of the TS_BASE structure of
321 expression EXPR into bitpack BP. */
324 pack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
326 bp_pack_value (bp, TREE_CODE (expr), 16);
329 bp_pack_value (bp, TREE_SIDE_EFFECTS (expr), 1);
330 bp_pack_value (bp, TREE_CONSTANT (expr), 1);
331 bp_pack_value (bp, TREE_READONLY (expr), 1);
333 /* TREE_PUBLIC is used on types to indicate that the type
334 has a TYPE_CACHED_VALUES vector. This is not streamed out,
335 so we skip it here. */
336 bp_pack_value (bp, TREE_PUBLIC (expr), 1);
338 bp_pack_value (bp, TREE_ADDRESSABLE (expr), 1);
339 bp_pack_value (bp, TREE_THIS_VOLATILE (expr), 1);
341 bp_pack_value (bp, DECL_UNSIGNED (expr), 1);
342 else if (TYPE_P (expr))
343 bp_pack_value (bp, TYPE_UNSIGNED (expr), 1);
344 /* We write debug info two times, do not confuse the second one. */
345 bp_pack_value (bp, TYPE_P (expr) ? 0 : TREE_ASM_WRITTEN (expr), 1);
346 bp_pack_value (bp, TREE_NO_WARNING (expr), 1);
347 bp_pack_value (bp, TREE_USED (expr), 1);
348 bp_pack_value (bp, TREE_NOTHROW (expr), 1);
349 bp_pack_value (bp, TREE_STATIC (expr), 1);
350 bp_pack_value (bp, TREE_PRIVATE (expr), 1);
351 bp_pack_value (bp, TREE_PROTECTED (expr), 1);
352 bp_pack_value (bp, TREE_DEPRECATED (expr), 1);
354 bp_pack_value (bp, TYPE_SATURATING (expr), 1);
355 if (TREE_CODE (expr) == SSA_NAME)
356 bp_pack_value (bp, SSA_NAME_IS_DEFAULT_DEF (expr), 1);
360 /* Pack all the non-pointer fields of the TS_REAL_CST structure of
361 expression EXPR into bitpack BP. */
364 pack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
369 r = TREE_REAL_CST (expr);
370 bp_pack_value (bp, r.cl, 2);
371 bp_pack_value (bp, r.decimal, 1);
372 bp_pack_value (bp, r.sign, 1);
373 bp_pack_value (bp, r.signalling, 1);
374 bp_pack_value (bp, r.canonical, 1);
375 bp_pack_value (bp, r.uexp, EXP_BITS);
376 for (i = 0; i < SIGSZ; i++)
377 bp_pack_value (bp, r.sig[i], HOST_BITS_PER_LONG);
381 /* Pack all the non-pointer fields of the TS_FIXED_CST structure of
382 expression EXPR into bitpack BP. */
385 pack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
387 struct fixed_value fv = TREE_FIXED_CST (expr);
388 bp_pack_value (bp, fv.data.low, HOST_BITS_PER_WIDE_INT);
389 bp_pack_value (bp, fv.data.high, HOST_BITS_PER_WIDE_INT);
393 /* Pack all the non-pointer fields of the TS_DECL_COMMON structure
394 of expression EXPR into bitpack BP. */
397 pack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
399 bp_pack_value (bp, DECL_MODE (expr), 8);
400 bp_pack_value (bp, DECL_NONLOCAL (expr), 1);
401 bp_pack_value (bp, DECL_VIRTUAL_P (expr), 1);
402 bp_pack_value (bp, DECL_IGNORED_P (expr), 1);
403 bp_pack_value (bp, DECL_ABSTRACT (expr), 1);
404 bp_pack_value (bp, DECL_ARTIFICIAL (expr), 1);
405 bp_pack_value (bp, DECL_USER_ALIGN (expr), 1);
406 bp_pack_value (bp, DECL_PRESERVE_P (expr), 1);
407 bp_pack_value (bp, DECL_DEBUG_EXPR_IS_FROM (expr), 1);
408 bp_pack_value (bp, DECL_EXTERNAL (expr), 1);
409 bp_pack_value (bp, DECL_GIMPLE_REG_P (expr), 1);
410 bp_pack_value (bp, DECL_ALIGN (expr), HOST_BITS_PER_INT);
412 if (TREE_CODE (expr) == LABEL_DECL)
414 /* Note that we do not write LABEL_DECL_UID. The reader will
415 always assume an initial value of -1 so that the
416 label_to_block_map is recreated by gimple_set_bb. */
417 bp_pack_value (bp, DECL_ERROR_ISSUED (expr), 1);
418 bp_pack_value (bp, EH_LANDING_PAD_NR (expr), HOST_BITS_PER_INT);
421 if (TREE_CODE (expr) == FIELD_DECL)
423 bp_pack_value (bp, DECL_PACKED (expr), 1);
424 bp_pack_value (bp, DECL_NONADDRESSABLE_P (expr), 1);
425 bp_pack_value (bp, DECL_OFFSET_ALIGN (expr), 8);
428 if (TREE_CODE (expr) == RESULT_DECL
429 || TREE_CODE (expr) == PARM_DECL
430 || TREE_CODE (expr) == VAR_DECL)
432 bp_pack_value (bp, DECL_BY_REFERENCE (expr), 1);
433 if (TREE_CODE (expr) == VAR_DECL
434 || TREE_CODE (expr) == PARM_DECL)
435 bp_pack_value (bp, DECL_HAS_VALUE_EXPR_P (expr), 1);
436 bp_pack_value (bp, DECL_RESTRICTED_P (expr), 1);
441 /* Pack all the non-pointer fields of the TS_DECL_WRTL structure
442 of expression EXPR into bitpack BP. */
445 pack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
447 bp_pack_value (bp, DECL_REGISTER (expr), 1);
451 /* Pack all the non-pointer fields of the TS_DECL_WITH_VIS structure
452 of expression EXPR into bitpack BP. */
455 pack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
457 bp_pack_value (bp, DECL_DEFER_OUTPUT (expr), 1);
458 bp_pack_value (bp, DECL_COMMON (expr), 1);
459 bp_pack_value (bp, DECL_DLLIMPORT_P (expr), 1);
460 bp_pack_value (bp, DECL_WEAK (expr), 1);
461 bp_pack_value (bp, DECL_SEEN_IN_BIND_EXPR_P (expr), 1);
462 bp_pack_value (bp, DECL_COMDAT (expr), 1);
463 bp_pack_value (bp, DECL_VISIBILITY (expr), 2);
464 bp_pack_value (bp, DECL_VISIBILITY_SPECIFIED (expr), 1);
466 if (TREE_CODE (expr) == VAR_DECL)
468 bp_pack_value (bp, DECL_HARD_REGISTER (expr), 1);
469 bp_pack_value (bp, DECL_IN_TEXT_SECTION (expr), 1);
470 bp_pack_value (bp, DECL_IN_CONSTANT_POOL (expr), 1);
471 bp_pack_value (bp, DECL_TLS_MODEL (expr), 3);
474 if (VAR_OR_FUNCTION_DECL_P (expr))
475 bp_pack_value (bp, DECL_INIT_PRIORITY (expr), HOST_BITS_PER_SHORT);
479 /* Pack all the non-pointer fields of the TS_FUNCTION_DECL structure
480 of expression EXPR into bitpack BP. */
483 pack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
485 /* For normal/md builtins we only write the class and code, so they
486 should never be handled here. */
487 gcc_assert (!lto_stream_as_builtin_p (expr));
489 bp_pack_value (bp, DECL_FUNCTION_CODE (expr), 11);
490 bp_pack_value (bp, DECL_BUILT_IN_CLASS (expr), 2);
491 bp_pack_value (bp, DECL_STATIC_CONSTRUCTOR (expr), 1);
492 bp_pack_value (bp, DECL_STATIC_DESTRUCTOR (expr), 1);
493 bp_pack_value (bp, DECL_UNINLINABLE (expr), 1);
494 bp_pack_value (bp, DECL_POSSIBLY_INLINED (expr), 1);
495 bp_pack_value (bp, DECL_IS_NOVOPS (expr), 1);
496 bp_pack_value (bp, DECL_IS_RETURNS_TWICE (expr), 1);
497 bp_pack_value (bp, DECL_IS_MALLOC (expr), 1);
498 bp_pack_value (bp, DECL_IS_OPERATOR_NEW (expr), 1);
499 bp_pack_value (bp, DECL_DECLARED_INLINE_P (expr), 1);
500 bp_pack_value (bp, DECL_STATIC_CHAIN (expr), 1);
501 bp_pack_value (bp, DECL_NO_INLINE_WARNING_P (expr), 1);
502 bp_pack_value (bp, DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr), 1);
503 bp_pack_value (bp, DECL_NO_LIMIT_STACK (expr), 1);
504 bp_pack_value (bp, DECL_DISREGARD_INLINE_LIMITS (expr), 1);
505 bp_pack_value (bp, DECL_PURE_P (expr), 1);
506 bp_pack_value (bp, DECL_LOOPING_CONST_OR_PURE_P (expr), 1);
510 /* Pack all the non-pointer fields of the TS_TYPE structure
511 of expression EXPR into bitpack BP. */
514 pack_ts_type_value_fields (struct bitpack_d *bp, tree expr)
516 bp_pack_value (bp, TYPE_PRECISION (expr), 9);
517 bp_pack_value (bp, TYPE_MODE (expr), 7);
518 bp_pack_value (bp, TYPE_STRING_FLAG (expr), 1);
519 bp_pack_value (bp, TYPE_NO_FORCE_BLK (expr), 1);
520 bp_pack_value (bp, TYPE_NEEDS_CONSTRUCTING (expr), 1);
521 if (RECORD_OR_UNION_TYPE_P (expr))
522 bp_pack_value (bp, TYPE_TRANSPARENT_AGGR (expr), 1);
523 bp_pack_value (bp, TYPE_PACKED (expr), 1);
524 bp_pack_value (bp, TYPE_RESTRICT (expr), 1);
525 bp_pack_value (bp, TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr), 2);
526 bp_pack_value (bp, TYPE_USER_ALIGN (expr), 1);
527 bp_pack_value (bp, TYPE_READONLY (expr), 1);
528 bp_pack_value (bp, TYPE_ALIGN (expr), HOST_BITS_PER_INT);
529 bp_pack_value (bp, TYPE_ALIAS_SET (expr) == 0 ? 0 : -1, HOST_BITS_PER_INT);
533 /* Pack all the non-pointer fields of the TS_BLOCK structure
534 of expression EXPR into bitpack BP. */
537 pack_ts_block_value_fields (struct bitpack_d *bp, tree expr)
539 bp_pack_value (bp, BLOCK_ABSTRACT (expr), 1);
540 bp_pack_value (bp, BLOCK_NUMBER (expr), 31);
544 /* Pack all the non-pointer fields in EXPR into a bit pack. */
546 static struct bitpack_d *
547 pack_value_fields (tree expr)
550 struct bitpack_d *bp;
552 code = TREE_CODE (expr);
553 bp = bitpack_create ();
555 /* Note that all these functions are highly sensitive to changes in
556 the types and sizes of each of the fields being packed. */
557 pack_ts_base_value_fields (bp, expr);
559 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
560 pack_ts_real_cst_value_fields (bp, expr);
562 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
563 pack_ts_fixed_cst_value_fields (bp, expr);
565 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
566 pack_ts_decl_common_value_fields (bp, expr);
568 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
569 pack_ts_decl_wrtl_value_fields (bp, expr);
571 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
572 pack_ts_decl_with_vis_value_fields (bp, expr);
574 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
575 pack_ts_function_decl_value_fields (bp, expr);
577 if (CODE_CONTAINS_STRUCT (code, TS_TYPE))
578 pack_ts_type_value_fields (bp, expr);
580 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
581 pack_ts_block_value_fields (bp, expr);
583 if (CODE_CONTAINS_STRUCT (code, TS_SSA_NAME))
585 /* We only stream the version number of SSA names. */
589 if (CODE_CONTAINS_STRUCT (code, TS_STATEMENT_LIST))
591 /* This is only used by GENERIC. */
595 if (CODE_CONTAINS_STRUCT (code, TS_OMP_CLAUSE))
597 /* This is only used by High GIMPLE. */
605 /* Emit location LOC to output block OB. */
608 lto_output_location (struct output_block *ob, location_t loc)
610 expanded_location xloc;
612 if (loc == UNKNOWN_LOCATION)
614 output_string (ob, ob->main_stream, NULL);
618 xloc = expand_location (loc);
620 output_string (ob, ob->main_stream, xloc.file);
621 output_sleb128 (ob, xloc.line);
622 output_sleb128 (ob, xloc.column);
623 output_sleb128 (ob, xloc.sysp);
625 ob->current_file = xloc.file;
626 ob->current_line = xloc.line;
627 ob->current_col = xloc.column;
631 /* Return true if tree node T is written to various tables. For these
632 nodes, we sometimes want to write their phyiscal representation
633 (via lto_output_tree), and sometimes we need to emit an index
634 reference into a table (via lto_output_tree_ref). */
637 tree_is_indexable (tree t)
639 if (TREE_CODE (t) == PARM_DECL)
641 else if (TREE_CODE (t) == VAR_DECL && decl_function_context (t)
645 return (TYPE_P (t) || DECL_P (t) || TREE_CODE (t) == SSA_NAME);
649 /* If EXPR is an indexable tree node, output a reference to it to
650 output block OB. Otherwise, output the physical representation of
654 lto_output_tree_ref (struct output_block *ob, tree expr)
658 if (expr == NULL_TREE)
664 if (!tree_is_indexable (expr))
666 /* Even though we are emitting the physical representation of
667 EXPR, its leaves must be emitted as references. */
668 lto_output_tree (ob, expr, true);
674 output_type_ref (ob, expr);
678 code = TREE_CODE (expr);
682 output_record_start (ob, LTO_ssa_name_ref);
683 output_uleb128 (ob, SSA_NAME_VERSION (expr));
687 output_record_start (ob, LTO_field_decl_ref);
688 lto_output_field_decl_index (ob->decl_state, ob->main_stream, expr);
692 output_record_start (ob, LTO_function_decl_ref);
693 lto_output_fn_decl_index (ob->decl_state, ob->main_stream, expr);
697 case DEBUG_EXPR_DECL:
698 gcc_assert (decl_function_context (expr) == NULL
699 || TREE_STATIC (expr));
700 output_record_start (ob, LTO_global_decl_ref);
701 lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
705 output_record_start (ob, LTO_const_decl_ref);
706 lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
710 gcc_assert (decl_function_context (expr) == NULL);
711 output_record_start (ob, LTO_imported_decl_ref);
712 lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
716 output_record_start (ob, LTO_type_decl_ref);
717 lto_output_type_decl_index (ob->decl_state, ob->main_stream, expr);
721 output_record_start (ob, LTO_namespace_decl_ref);
722 lto_output_namespace_decl_index (ob->decl_state, ob->main_stream, expr);
726 output_record_start (ob, LTO_label_decl_ref);
727 lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
731 output_record_start (ob, LTO_result_decl_ref);
732 lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
736 /* No other node is indexable, so it should have been handled
737 by lto_output_tree. */
743 /* If REF_P is true, emit a reference to EXPR in output block OB,
744 otherwise emit the physical representation of EXPR in OB. */
747 lto_output_tree_or_ref (struct output_block *ob, tree expr, bool ref_p)
750 lto_output_tree_ref (ob, expr);
752 lto_output_tree (ob, expr, false);
756 /* Emit the chain of tree nodes starting at T. OB is the output block
757 to write to. REF_P is true if chain elements should be emitted
761 lto_output_chain (struct output_block *ob, tree t, bool ref_p)
765 count = list_length (t);
766 output_sleb128 (ob, count);
767 for (i = 0; i < count; i++)
771 /* Clear TREE_CHAIN to avoid blindly recursing into the rest
773 saved_chain = TREE_CHAIN (t);
774 TREE_CHAIN (t) = NULL_TREE;
776 lto_output_tree_or_ref (ob, t, ref_p);
778 TREE_CHAIN (t) = saved_chain;
784 /* Write all pointer fields in the TS_COMMON structure of EXPR to output
785 block OB. If REF_P is true, write a reference to EXPR's pointer
789 lto_output_ts_common_tree_pointers (struct output_block *ob, tree expr,
792 lto_output_tree_or_ref (ob, TREE_TYPE (expr), ref_p);
796 /* Write all pointer fields in the TS_VECTOR structure of EXPR to output
797 block OB. If REF_P is true, write a reference to EXPR's pointer
801 lto_output_ts_vector_tree_pointers (struct output_block *ob, tree expr,
804 lto_output_chain (ob, TREE_VECTOR_CST_ELTS (expr), ref_p);
808 /* Write all pointer fields in the TS_COMPLEX structure of EXPR to output
809 block OB. If REF_P is true, write a reference to EXPR's pointer
813 lto_output_ts_complex_tree_pointers (struct output_block *ob, tree expr,
816 lto_output_tree_or_ref (ob, TREE_REALPART (expr), ref_p);
817 lto_output_tree_or_ref (ob, TREE_IMAGPART (expr), ref_p);
821 /* Write all pointer fields in the TS_DECL_MINIMAL structure of EXPR
822 to output block OB. If REF_P is true, write a reference to EXPR's
826 lto_output_ts_decl_minimal_tree_pointers (struct output_block *ob, tree expr,
829 lto_output_tree_or_ref (ob, DECL_NAME (expr), ref_p);
830 lto_output_tree_or_ref (ob, DECL_CONTEXT (expr), ref_p);
831 lto_output_location (ob, DECL_SOURCE_LOCATION (expr));
835 /* Write all pointer fields in the TS_DECL_COMMON structure of EXPR to
836 output block OB. If REF_P is true, write a reference to EXPR's
840 lto_output_ts_decl_common_tree_pointers (struct output_block *ob, tree expr,
843 lto_output_tree_or_ref (ob, DECL_SIZE (expr), ref_p);
844 lto_output_tree_or_ref (ob, DECL_SIZE_UNIT (expr), ref_p);
846 if (TREE_CODE (expr) != FUNCTION_DECL)
847 lto_output_tree_or_ref (ob, DECL_INITIAL (expr), ref_p);
849 lto_output_tree_or_ref (ob, DECL_ATTRIBUTES (expr), ref_p);
850 lto_output_tree_or_ref (ob, DECL_ABSTRACT_ORIGIN (expr), ref_p);
852 if (TREE_CODE (expr) == PARM_DECL)
853 lto_output_chain (ob, TREE_CHAIN (expr), ref_p);
855 if ((TREE_CODE (expr) == VAR_DECL
856 || TREE_CODE (expr) == PARM_DECL)
857 && DECL_HAS_VALUE_EXPR_P (expr))
858 lto_output_tree_or_ref (ob, DECL_VALUE_EXPR (expr), ref_p);
862 /* Write all pointer fields in the TS_DECL_NON_COMMON structure of
863 EXPR to output block OB. If REF_P is true, write a reference to EXPR's
867 lto_output_ts_decl_non_common_tree_pointers (struct output_block *ob,
868 tree expr, bool ref_p)
870 if (TREE_CODE (expr) == FUNCTION_DECL)
872 /* DECL_SAVED_TREE holds the GENERIC representation for DECL.
873 At this point, it should not exist. Either because it was
874 converted to gimple or because DECL didn't have a GENERIC
875 representation in this TU. */
876 gcc_assert (DECL_SAVED_TREE (expr) == NULL_TREE);
877 lto_output_tree_or_ref (ob, DECL_ARGUMENTS (expr), ref_p);
878 lto_output_tree_or_ref (ob, DECL_RESULT (expr), ref_p);
880 lto_output_tree_or_ref (ob, DECL_VINDEX (expr), ref_p);
884 /* Write all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
885 to output block OB. If REF_P is true, write a reference to EXPR's
889 lto_output_ts_decl_with_vis_tree_pointers (struct output_block *ob, tree expr,
892 /* Make sure we don't inadvertently set the assembler name. */
893 if (DECL_ASSEMBLER_NAME_SET_P (expr))
894 lto_output_tree_or_ref (ob, DECL_ASSEMBLER_NAME (expr), ref_p);
898 lto_output_tree_or_ref (ob, DECL_SECTION_NAME (expr), ref_p);
899 lto_output_tree_or_ref (ob, DECL_COMDAT_GROUP (expr), ref_p);
903 /* Write all pointer fields in the TS_FIELD_DECL structure of EXPR to
904 output block OB. If REF_P is true, write a reference to EXPR's
908 lto_output_ts_field_decl_tree_pointers (struct output_block *ob, tree expr,
911 lto_output_tree_or_ref (ob, DECL_FIELD_OFFSET (expr), ref_p);
912 lto_output_tree_or_ref (ob, DECL_BIT_FIELD_TYPE (expr), ref_p);
913 lto_output_tree_or_ref (ob, DECL_QUALIFIER (expr), ref_p);
914 lto_output_tree_or_ref (ob, DECL_FIELD_BIT_OFFSET (expr), ref_p);
915 lto_output_tree_or_ref (ob, DECL_FCONTEXT (expr), ref_p);
916 lto_output_chain (ob, TREE_CHAIN (expr), ref_p);
920 /* Write all pointer fields in the TS_FUNCTION_DECL structure of EXPR
921 to output block OB. If REF_P is true, write a reference to EXPR's
925 lto_output_ts_function_decl_tree_pointers (struct output_block *ob, tree expr,
928 /* DECL_STRUCT_FUNCTION is handled by lto_output_function. FIXME lto,
929 maybe it should be handled here? */
930 lto_output_tree_or_ref (ob, DECL_FUNCTION_PERSONALITY (expr), ref_p);
931 lto_output_tree_or_ref (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p);
932 lto_output_tree_or_ref (ob, DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr),
937 /* Write all pointer fields in the TS_TYPE structure of EXPR to output
938 block OB. If REF_P is true, write a reference to EXPR's pointer
942 lto_output_ts_type_tree_pointers (struct output_block *ob, tree expr,
945 if (TREE_CODE (expr) == ENUMERAL_TYPE)
946 lto_output_tree_or_ref (ob, TYPE_VALUES (expr), ref_p);
947 else if (TREE_CODE (expr) == ARRAY_TYPE)
948 lto_output_tree_or_ref (ob, TYPE_DOMAIN (expr), ref_p);
949 else if (RECORD_OR_UNION_TYPE_P (expr))
950 lto_output_tree_or_ref (ob, TYPE_FIELDS (expr), ref_p);
951 else if (TREE_CODE (expr) == FUNCTION_TYPE
952 || TREE_CODE (expr) == METHOD_TYPE)
953 lto_output_tree_or_ref (ob, TYPE_ARG_TYPES (expr), ref_p);
954 else if (TREE_CODE (expr) == VECTOR_TYPE)
955 lto_output_tree_or_ref (ob, TYPE_DEBUG_REPRESENTATION_TYPE (expr), ref_p);
957 lto_output_tree_or_ref (ob, TYPE_SIZE (expr), ref_p);
958 lto_output_tree_or_ref (ob, TYPE_SIZE_UNIT (expr), ref_p);
959 lto_output_tree_or_ref (ob, TYPE_ATTRIBUTES (expr), ref_p);
960 lto_output_tree_or_ref (ob, TYPE_NAME (expr), ref_p);
961 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO nor
962 TYPE_NEXT_PTR_TO or TYPE_NEXT_REF_TO. */
963 if (!POINTER_TYPE_P (expr))
964 lto_output_tree_or_ref (ob, TYPE_MINVAL (expr), ref_p);
965 lto_output_tree_or_ref (ob, TYPE_MAXVAL (expr), ref_p);
966 lto_output_tree_or_ref (ob, TYPE_MAIN_VARIANT (expr), ref_p);
967 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
969 if (RECORD_OR_UNION_TYPE_P (expr))
970 lto_output_tree_or_ref (ob, TYPE_BINFO (expr), ref_p);
971 lto_output_tree_or_ref (ob, TYPE_CONTEXT (expr), ref_p);
972 lto_output_tree_or_ref (ob, TYPE_CANONICAL (expr), ref_p);
973 lto_output_tree_or_ref (ob, TYPE_STUB_DECL (expr), ref_p);
977 /* Write all pointer fields in the TS_LIST structure of EXPR to output
978 block OB. If REF_P is true, write a reference to EXPR's pointer
982 lto_output_ts_list_tree_pointers (struct output_block *ob, tree expr,
985 lto_output_tree_or_ref (ob, TREE_PURPOSE (expr), ref_p);
986 lto_output_tree_or_ref (ob, TREE_VALUE (expr), ref_p);
987 lto_output_chain (ob, TREE_CHAIN (expr), ref_p);
991 /* Write all pointer fields in the TS_VEC structure of EXPR to output
992 block OB. If REF_P is true, write a reference to EXPR's pointer
996 lto_output_ts_vec_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
1000 /* Note that the number of slots for EXPR has already been emitted
1001 in EXPR's header (see lto_output_tree_header). */
1002 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
1003 lto_output_tree_or_ref (ob, TREE_VEC_ELT (expr, i), ref_p);
1007 /* Write all pointer fields in the TS_EXP structure of EXPR to output
1008 block OB. If REF_P is true, write a reference to EXPR's pointer
1012 lto_output_ts_exp_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
1016 output_sleb128 (ob, TREE_OPERAND_LENGTH (expr));
1017 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
1018 lto_output_tree_or_ref (ob, TREE_OPERAND (expr, i), ref_p);
1019 lto_output_location (ob, EXPR_LOCATION (expr));
1020 lto_output_tree_or_ref (ob, TREE_BLOCK (expr), ref_p);
1024 /* Write all pointer fields in the TS_BLOCK structure of EXPR to output
1025 block OB. If REF_P is true, write a reference to EXPR's pointer
1029 lto_output_ts_block_tree_pointers (struct output_block *ob, tree expr,
1035 lto_output_location (ob, BLOCK_SOURCE_LOCATION (expr));
1036 lto_output_chain (ob, BLOCK_VARS (expr), ref_p);
1038 output_uleb128 (ob, VEC_length (tree, BLOCK_NONLOCALIZED_VARS (expr)));
1039 for (i = 0; VEC_iterate (tree, BLOCK_NONLOCALIZED_VARS (expr), i, t); i++)
1040 lto_output_tree_or_ref (ob, t, ref_p);
1042 lto_output_tree_or_ref (ob, BLOCK_SUPERCONTEXT (expr), ref_p);
1043 lto_output_tree_or_ref (ob, BLOCK_ABSTRACT_ORIGIN (expr), ref_p);
1044 lto_output_tree_or_ref (ob, BLOCK_FRAGMENT_ORIGIN (expr), ref_p);
1045 lto_output_tree_or_ref (ob, BLOCK_FRAGMENT_CHAIN (expr), ref_p);
1046 lto_output_chain (ob, BLOCK_SUBBLOCKS (expr), ref_p);
1050 /* Write all pointer fields in the TS_BINFO structure of EXPR to output
1051 block OB. If REF_P is true, write a reference to EXPR's pointer
1055 lto_output_ts_binfo_tree_pointers (struct output_block *ob, tree expr,
1061 /* Note that the number of BINFO slots has already been emitted in
1062 EXPR's header (see lto_output_tree_header) because this length
1063 is needed to build the empty BINFO node on the reader side. */
1064 for (i = 0; VEC_iterate (tree, BINFO_BASE_BINFOS (expr), i, t); i++)
1065 lto_output_tree_or_ref (ob, t, ref_p);
1068 lto_output_tree_or_ref (ob, BINFO_OFFSET (expr), ref_p);
1069 lto_output_tree_or_ref (ob, BINFO_VTABLE (expr), ref_p);
1070 lto_output_tree_or_ref (ob, BINFO_VIRTUALS (expr), ref_p);
1071 lto_output_tree_or_ref (ob, BINFO_VPTR_FIELD (expr), ref_p);
1073 output_uleb128 (ob, VEC_length (tree, BINFO_BASE_ACCESSES (expr)));
1074 for (i = 0; VEC_iterate (tree, BINFO_BASE_ACCESSES (expr), i, t); i++)
1075 lto_output_tree_or_ref (ob, t, ref_p);
1077 lto_output_tree_or_ref (ob, BINFO_INHERITANCE_CHAIN (expr), ref_p);
1078 lto_output_tree_or_ref (ob, BINFO_SUBVTT_INDEX (expr), ref_p);
1079 lto_output_tree_or_ref (ob, BINFO_VPTR_INDEX (expr), ref_p);
1083 /* Write all pointer fields in the TS_CONSTRUCTOR structure of EXPR to
1084 output block OB. If REF_P is true, write a reference to EXPR's
1088 lto_output_ts_constructor_tree_pointers (struct output_block *ob, tree expr,
1094 output_uleb128 (ob, CONSTRUCTOR_NELTS (expr));
1095 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value)
1097 lto_output_tree_or_ref (ob, index, ref_p);
1098 lto_output_tree_or_ref (ob, value, ref_p);
1103 /* Helper for lto_output_tree. Write all pointer fields in EXPR to output
1104 block OB. If REF_P is true, the leaves of EXPR are emitted as
1108 lto_output_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
1110 enum tree_code code;
1112 code = TREE_CODE (expr);
1114 if (CODE_CONTAINS_STRUCT (code, TS_COMMON))
1115 lto_output_ts_common_tree_pointers (ob, expr, ref_p);
1117 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1118 lto_output_ts_vector_tree_pointers (ob, expr, ref_p);
1120 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1121 lto_output_ts_complex_tree_pointers (ob, expr, ref_p);
1123 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1124 lto_output_ts_decl_minimal_tree_pointers (ob, expr, ref_p);
1126 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1127 lto_output_ts_decl_common_tree_pointers (ob, expr, ref_p);
1129 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1130 lto_output_ts_decl_non_common_tree_pointers (ob, expr, ref_p);
1132 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1133 lto_output_ts_decl_with_vis_tree_pointers (ob, expr, ref_p);
1135 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1136 lto_output_ts_field_decl_tree_pointers (ob, expr, ref_p);
1138 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1139 lto_output_ts_function_decl_tree_pointers (ob, expr, ref_p);
1141 if (CODE_CONTAINS_STRUCT (code, TS_TYPE))
1142 lto_output_ts_type_tree_pointers (ob, expr, ref_p);
1144 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1145 lto_output_ts_list_tree_pointers (ob, expr, ref_p);
1147 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1148 lto_output_ts_vec_tree_pointers (ob, expr, ref_p);
1150 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1151 lto_output_ts_exp_tree_pointers (ob, expr, ref_p);
1153 if (CODE_CONTAINS_STRUCT (code, TS_SSA_NAME))
1155 /* We only stream the version number of SSA names. */
1159 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1160 lto_output_ts_block_tree_pointers (ob, expr, ref_p);
1162 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1163 lto_output_ts_binfo_tree_pointers (ob, expr, ref_p);
1165 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1166 lto_output_ts_constructor_tree_pointers (ob, expr, ref_p);
1168 if (CODE_CONTAINS_STRUCT (code, TS_STATEMENT_LIST))
1170 /* This should only appear in GENERIC. */
1174 if (CODE_CONTAINS_STRUCT (code, TS_OMP_CLAUSE))
1176 /* This should only appear in High GIMPLE. */
1180 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
1181 sorry ("gimple bytecode streams do not support the optimization attribute");
1183 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
1184 sorry ("gimple bytecode streams do not support the target attribute");
1188 /* Emit header information for tree EXPR to output block OB. The header
1189 contains everything needed to instantiate an empty skeleton for
1190 EXPR on the reading side. IX is the index into the streamer cache
1191 where EXPR is stored. REF_P is as in lto_output_tree. */
1194 lto_output_tree_header (struct output_block *ob, tree expr, int ix)
1197 enum tree_code code;
1199 /* We should not see any non-GIMPLE tree nodes here. */
1200 code = TREE_CODE (expr);
1201 if (!lto_is_streamable (expr))
1202 internal_error ("tree code %qs is not supported in gimple streams",
1203 tree_code_name[code]);
1205 /* The header of a tree node consists of its tag, the size of
1206 the node, and any other information needed to instantiate
1207 EXPR on the reading side (such as the number of slots in
1208 variable sized nodes). */
1209 tag = lto_tree_code_to_tag (code);
1210 output_record_start (ob, tag);
1211 output_sleb128 (ob, ix);
1213 /* The following will cause bootstrap miscomparisons. Enable with care. */
1214 #ifdef LTO_STREAMER_DEBUG
1215 /* This is used mainly for debugging purposes. When the reader
1216 and the writer do not agree on a streamed node, the pointer
1217 value for EXPR can be used to track down the differences in
1219 gcc_assert ((HOST_WIDEST_INT) (intptr_t) expr == (intptr_t) expr);
1220 output_sleb128 (ob, (HOST_WIDEST_INT) (intptr_t) expr);
1223 /* The text in strings and identifiers are completely emitted in
1225 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
1226 output_string_cst (ob, ob->main_stream, expr);
1227 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
1228 output_identifier (ob, ob->main_stream, expr);
1229 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1230 output_sleb128 (ob, TREE_VEC_LENGTH (expr));
1231 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1232 output_uleb128 (ob, BINFO_N_BASE_BINFOS (expr));
1236 /* Write the code and class of builtin EXPR to output block OB. IX is
1237 the index into the streamer cache where EXPR is stored.*/
1240 lto_output_builtin_tree (struct output_block *ob, tree expr, int ix)
1242 gcc_assert (lto_stream_as_builtin_p (expr));
1244 if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD
1245 && !targetm.builtin_decl)
1246 sorry ("gimple bytecode streams do not support machine specific builtin "
1247 "functions on this target");
1249 output_record_start (ob, LTO_builtin_decl);
1250 output_uleb128 (ob, DECL_BUILT_IN_CLASS (expr));
1251 output_uleb128 (ob, DECL_FUNCTION_CODE (expr));
1252 output_sleb128 (ob, ix);
1254 if (DECL_ASSEMBLER_NAME_SET_P (expr))
1256 /* When the assembler name of a builtin gets a user name,
1257 the new name is always prefixed with '*' by
1258 set_builtin_user_assembler_name. So, to prevent the
1259 reader side from adding a second '*', we omit it here. */
1260 const char *str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (expr));
1261 if (strlen (str) > 1 && str[0] == '*')
1262 output_string (ob, ob->main_stream, &str[1]);
1264 output_string (ob, ob->main_stream, NULL);
1267 output_string (ob, ob->main_stream, NULL);
1271 /* Write a physical representation of tree node EXPR to output block
1272 OB. If REF_P is true, the leaves of EXPR are emitted as references
1273 via lto_output_tree_ref. IX is the index into the streamer cache
1274 where EXPR is stored. */
1277 lto_write_tree (struct output_block *ob, tree expr, bool ref_p, int ix)
1279 struct bitpack_d *bp;
1281 /* Write the header, containing everything needed to materialize
1282 EXPR on the reading side. */
1283 lto_output_tree_header (ob, expr, ix);
1285 /* Pack all the non-pointer fields in EXPR into a bitpack and write
1286 the resulting bitpack. */
1287 bp = pack_value_fields (expr);
1288 lto_output_bitpack (ob->main_stream, bp);
1289 bitpack_delete (bp);
1291 /* Write all the pointer fields in EXPR. */
1292 lto_output_tree_pointers (ob, expr, ref_p);
1294 /* Mark the end of EXPR. */
1299 /* Emit the integer constant CST to output block OB. If REF_P is true,
1300 CST's type will be emitted as a reference. */
1303 lto_output_integer_cst (struct output_block *ob, tree cst, bool ref_p)
1305 output_record_start (ob, lto_tree_code_to_tag (INTEGER_CST));
1306 lto_output_tree_or_ref (ob, TREE_TYPE (cst), ref_p);
1307 lto_output_1_stream (ob->main_stream, TREE_OVERFLOW_P (cst));
1308 output_uleb128 (ob, TREE_INT_CST_LOW (cst));
1309 output_uleb128 (ob, TREE_INT_CST_HIGH (cst));
1313 /* Emit the physical representation of tree node EXPR to output block
1314 OB. If REF_P is true, the leaves of EXPR are emitted as references
1315 via lto_output_tree_ref. */
1318 lto_output_tree (struct output_block *ob, tree expr, bool ref_p)
1324 if (expr == NULL_TREE)
1330 /* INTEGER_CST nodes are special because they need their original type
1331 to be materialized by the reader (to implement TYPE_CACHED_VALUES). */
1332 if (TREE_CODE (expr) == INTEGER_CST)
1334 lto_output_integer_cst (ob, expr, ref_p);
1338 /* Determine the offset in the stream where EXPR will be written.
1339 This is used when emitting pickle references so the reader knows
1340 where to reconstruct the pickled object from. This allows
1341 circular and forward references within the same stream. */
1342 offset = ob->main_stream->total_size;
1344 existed_p = lto_streamer_cache_insert (ob->writer_cache, expr, &ix, &offset);
1347 /* If a node has already been streamed out, make sure that
1348 we don't write it more than once. Otherwise, the reader
1349 will instantiate two different nodes for the same object. */
1350 output_record_start (ob, LTO_tree_pickle_reference);
1351 output_sleb128 (ob, ix);
1352 output_uleb128 (ob, lto_tree_code_to_tag (TREE_CODE (expr)));
1353 output_uleb128 (ob, offset);
1355 else if (lto_stream_as_builtin_p (expr))
1357 /* MD and NORMAL builtins do not need to be written out
1358 completely as they are always instantiated by the
1359 compiler on startup. The only builtins that need to
1360 be written out are BUILT_IN_FRONTEND. For all other
1361 builtins, we simply write the class and code. */
1362 lto_output_builtin_tree (ob, expr, ix);
1366 /* This is the first time we see EXPR, write its fields
1368 lto_write_tree (ob, expr, ref_p, ix);
1373 /* Output to OB a list of try/catch handlers starting with FIRST. */
1376 output_eh_try_list (struct output_block *ob, eh_catch first)
1380 for (n = first; n; n = n->next_catch)
1382 output_record_start (ob, LTO_eh_catch);
1383 lto_output_tree_ref (ob, n->type_list);
1384 lto_output_tree_ref (ob, n->filter_list);
1385 lto_output_tree_ref (ob, n->label);
1392 /* Output EH region R in function FN to OB. CURR_RN is the slot index
1393 that is being emitted in FN->EH->REGION_ARRAY. This is used to
1394 detect EH region sharing. */
1397 output_eh_region (struct output_block *ob, eh_region r)
1407 if (r->type == ERT_CLEANUP)
1408 tag = LTO_ert_cleanup;
1409 else if (r->type == ERT_TRY)
1411 else if (r->type == ERT_ALLOWED_EXCEPTIONS)
1412 tag = LTO_ert_allowed_exceptions;
1413 else if (r->type == ERT_MUST_NOT_THROW)
1414 tag = LTO_ert_must_not_throw;
1418 output_record_start (ob, tag);
1419 output_sleb128 (ob, r->index);
1422 output_sleb128 (ob, r->outer->index);
1427 output_sleb128 (ob, r->inner->index);
1432 output_sleb128 (ob, r->next_peer->index);
1436 if (r->type == ERT_TRY)
1438 output_eh_try_list (ob, r->u.eh_try.first_catch);
1440 else if (r->type == ERT_ALLOWED_EXCEPTIONS)
1442 lto_output_tree_ref (ob, r->u.allowed.type_list);
1443 lto_output_tree_ref (ob, r->u.allowed.label);
1444 output_uleb128 (ob, r->u.allowed.filter);
1446 else if (r->type == ERT_MUST_NOT_THROW)
1448 lto_output_tree_ref (ob, r->u.must_not_throw.failure_decl);
1449 lto_output_location (ob, r->u.must_not_throw.failure_loc);
1452 if (r->landing_pads)
1453 output_sleb128 (ob, r->landing_pads->index);
1459 /* Output landing pad LP to OB. */
1462 output_eh_lp (struct output_block *ob, eh_landing_pad lp)
1470 output_record_start (ob, LTO_eh_landing_pad);
1471 output_sleb128 (ob, lp->index);
1473 output_sleb128 (ob, lp->next_lp->index);
1478 output_sleb128 (ob, lp->region->index);
1482 lto_output_tree_ref (ob, lp->post_landing_pad);
1486 /* Output the existing eh_table to OB. */
1489 output_eh_regions (struct output_block *ob, struct function *fn)
1491 if (fn->eh && fn->eh->region_tree)
1498 output_record_start (ob, LTO_eh_table);
1500 /* Emit the index of the root of the EH region tree. */
1501 output_sleb128 (ob, fn->eh->region_tree->index);
1503 /* Emit all the EH regions in the region array. */
1504 output_sleb128 (ob, VEC_length (eh_region, fn->eh->region_array));
1505 for (i = 0; VEC_iterate (eh_region, fn->eh->region_array, i, eh); i++)
1506 output_eh_region (ob, eh);
1508 /* Emit all landing pads. */
1509 output_sleb128 (ob, VEC_length (eh_landing_pad, fn->eh->lp_array));
1510 for (i = 0; VEC_iterate (eh_landing_pad, fn->eh->lp_array, i, lp); i++)
1511 output_eh_lp (ob, lp);
1513 /* Emit all the runtime type data. */
1514 output_sleb128 (ob, VEC_length (tree, fn->eh->ttype_data));
1515 for (i = 0; VEC_iterate (tree, fn->eh->ttype_data, i, ttype); i++)
1516 lto_output_tree_ref (ob, ttype);
1518 /* Emit the table of action chains. */
1519 if (targetm.arm_eabi_unwinder)
1522 output_sleb128 (ob, VEC_length (tree, fn->eh->ehspec_data.arm_eabi));
1524 VEC_iterate (tree, fn->eh->ehspec_data.arm_eabi, i, t);
1526 lto_output_tree_ref (ob, t);
1531 output_sleb128 (ob, VEC_length (uchar, fn->eh->ehspec_data.other));
1532 for (i = 0; VEC_iterate (uchar, fn->eh->ehspec_data.other, i, c); i++)
1533 lto_output_1_stream (ob->main_stream, c);
1537 /* The 0 either terminates the record or indicates that there are no
1538 eh_records at all. */
1543 /* Output all of the active ssa names to the ssa_names stream. */
1546 output_ssa_names (struct output_block *ob, struct function *fn)
1548 unsigned int i, len;
1550 len = VEC_length (tree, SSANAMES (fn));
1551 output_uleb128 (ob, len);
1553 for (i = 1; i < len; i++)
1555 tree ptr = VEC_index (tree, SSANAMES (fn), i);
1557 if (ptr == NULL_TREE
1558 || SSA_NAME_IN_FREE_LIST (ptr)
1559 || !is_gimple_reg (ptr))
1562 output_uleb128 (ob, i);
1563 lto_output_1_stream (ob->main_stream, SSA_NAME_IS_DEFAULT_DEF (ptr));
1564 lto_output_tree_ref (ob, SSA_NAME_VAR (ptr));
1571 /* Output the cfg. */
1574 output_cfg (struct output_block *ob, struct function *fn)
1576 struct lto_output_stream *tmp_stream = ob->main_stream;
1579 ob->main_stream = ob->cfg_stream;
1581 output_uleb128 (ob, profile_status_for_function (fn));
1583 /* Output the number of the highest basic block. */
1584 output_uleb128 (ob, last_basic_block_for_function (fn));
1586 FOR_ALL_BB_FN (bb, fn)
1591 output_sleb128 (ob, bb->index);
1593 /* Output the successors and the edge flags. */
1594 output_uleb128 (ob, EDGE_COUNT (bb->succs));
1595 FOR_EACH_EDGE (e, ei, bb->succs)
1597 output_uleb128 (ob, e->dest->index);
1598 output_sleb128 (ob, e->probability);
1599 output_sleb128 (ob, e->count);
1600 output_uleb128 (ob, e->flags);
1604 output_sleb128 (ob, -1);
1606 bb = ENTRY_BLOCK_PTR;
1609 output_sleb128 (ob, bb->next_bb->index);
1613 output_sleb128 (ob, -1);
1615 ob->main_stream = tmp_stream;
1619 /* Output PHI function PHI to the main stream in OB. */
1622 output_phi (struct output_block *ob, gimple phi)
1624 unsigned i, len = gimple_phi_num_args (phi);
1626 output_record_start (ob, lto_gimple_code_to_tag (GIMPLE_PHI));
1627 output_uleb128 (ob, SSA_NAME_VERSION (PHI_RESULT (phi)));
1629 for (i = 0; i < len; i++)
1631 lto_output_tree_ref (ob, gimple_phi_arg_def (phi, i));
1632 output_uleb128 (ob, gimple_phi_arg_edge (phi, i)->src->index);
1633 lto_output_location (ob, gimple_phi_arg_location (phi, i));
1638 /* Emit statement STMT on the main stream of output block OB. */
1641 output_gimple_stmt (struct output_block *ob, gimple stmt)
1644 enum gimple_code code;
1646 struct bitpack_d *bp;
1648 /* Emit identifying tag. */
1649 code = gimple_code (stmt);
1650 tag = lto_gimple_code_to_tag (code);
1651 output_record_start (ob, tag);
1653 /* Emit the tuple header. */
1654 bp = bitpack_create ();
1655 bp_pack_value (bp, gimple_num_ops (stmt), sizeof (unsigned) * 8);
1656 bp_pack_value (bp, gimple_no_warning_p (stmt), 1);
1657 if (is_gimple_assign (stmt))
1658 bp_pack_value (bp, gimple_assign_nontemporal_move_p (stmt), 1);
1659 bp_pack_value (bp, gimple_has_volatile_ops (stmt), 1);
1660 bp_pack_value (bp, stmt->gsbase.subcode, 16);
1661 lto_output_bitpack (ob->main_stream, bp);
1662 bitpack_delete (bp);
1664 /* Emit location information for the statement. */
1665 lto_output_location (ob, gimple_location (stmt));
1667 /* Emit the lexical block holding STMT. */
1668 lto_output_tree (ob, gimple_block (stmt), true);
1670 /* Emit the operands. */
1671 switch (gimple_code (stmt))
1674 output_sleb128 (ob, gimple_resx_region (stmt));
1677 case GIMPLE_EH_MUST_NOT_THROW:
1678 lto_output_tree_ref (ob, gimple_eh_must_not_throw_fndecl (stmt));
1681 case GIMPLE_EH_DISPATCH:
1682 output_sleb128 (ob, gimple_eh_dispatch_region (stmt));
1686 lto_output_uleb128_stream (ob->main_stream, gimple_asm_ninputs (stmt));
1687 lto_output_uleb128_stream (ob->main_stream, gimple_asm_noutputs (stmt));
1688 lto_output_uleb128_stream (ob->main_stream, gimple_asm_nclobbers (stmt));
1689 output_string (ob, ob->main_stream, gimple_asm_string (stmt));
1700 for (i = 0; i < gimple_num_ops (stmt); i++)
1702 tree op = gimple_op (stmt, i);
1703 lto_output_tree_ref (ob, op);
1708 case GIMPLE_PREDICT:
1717 /* Output a basic block BB to the main stream in OB for this FN. */
1720 output_bb (struct output_block *ob, basic_block bb, struct function *fn)
1722 gimple_stmt_iterator bsi = gsi_start_bb (bb);
1724 output_record_start (ob,
1725 (!gsi_end_p (bsi)) || phi_nodes (bb)
1729 output_uleb128 (ob, bb->index);
1730 output_sleb128 (ob, bb->count);
1731 output_sleb128 (ob, bb->loop_depth);
1732 output_sleb128 (ob, bb->frequency);
1733 output_sleb128 (ob, bb->flags);
1735 if (!gsi_end_p (bsi) || phi_nodes (bb))
1737 /* Output the statements. The list of statements is terminated
1739 for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi))
1742 gimple stmt = gsi_stmt (bsi);
1744 output_gimple_stmt (ob, stmt);
1746 /* Emit the EH region holding STMT. */
1747 region = lookup_stmt_eh_lp_fn (fn, stmt);
1750 output_record_start (ob, LTO_eh_region);
1751 output_sleb128 (ob, region);
1759 for (bsi = gsi_start_phis (bb); !gsi_end_p (bsi); gsi_next (&bsi))
1761 gimple phi = gsi_stmt (bsi);
1763 /* Only emit PHIs for gimple registers. PHI nodes for .MEM
1764 will be filled in on reading when the SSA form is
1766 if (is_gimple_reg (gimple_phi_result (phi)))
1767 output_phi (ob, phi);
1774 /* Create the header in the file using OB. If the section type is for
1775 a function, set FN to the decl for that function. */
1778 produce_asm (struct output_block *ob, tree fn)
1780 enum lto_section_type section_type = ob->section_type;
1781 struct lto_function_header header;
1783 struct lto_output_stream *header_stream;
1785 if (section_type == LTO_section_function_body)
1787 const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn));
1788 section_name = lto_get_section_name (section_type, name);
1791 section_name = lto_get_section_name (section_type, NULL);
1793 lto_begin_section (section_name, !flag_wpa);
1794 free (section_name);
1796 /* The entire header is stream computed here. */
1797 memset (&header, 0, sizeof (struct lto_function_header));
1799 /* Write the header. */
1800 header.lto_header.major_version = LTO_major_version;
1801 header.lto_header.minor_version = LTO_minor_version;
1802 header.lto_header.section_type = section_type;
1804 header.compressed_size = 0;
1806 if (section_type == LTO_section_function_body)
1807 header.cfg_size = ob->cfg_stream->total_size;
1808 header.main_size = ob->main_stream->total_size;
1809 header.string_size = ob->string_stream->total_size;
1811 header_stream = XCNEW (struct lto_output_stream);
1812 lto_output_data_stream (header_stream, &header, sizeof header);
1813 lto_write_stream (header_stream);
1814 free (header_stream);
1816 /* Put all of the gimple and the string table out the asm file as a
1818 if (section_type == LTO_section_function_body)
1819 lto_write_stream (ob->cfg_stream);
1820 lto_write_stream (ob->main_stream);
1821 lto_write_stream (ob->string_stream);
1827 /* Output the body of function NODE->DECL. */
1830 output_function (struct cgraph_node *node)
1832 struct bitpack_d *bp;
1834 struct function *fn;
1836 struct output_block *ob;
1838 function = node->decl;
1839 fn = DECL_STRUCT_FUNCTION (function);
1840 ob = create_output_block (LTO_section_function_body);
1842 clear_line_info (ob);
1843 ob->cgraph_node = node;
1845 gcc_assert (current_function_decl == NULL_TREE && cfun == NULL);
1847 /* Set current_function_decl and cfun. */
1848 current_function_decl = function;
1851 /* Make string 0 be a NULL string. */
1852 lto_output_1_stream (ob->string_stream, 0);
1854 output_record_start (ob, LTO_function);
1856 /* Write all the attributes for FN. */
1857 bp = bitpack_create ();
1858 bp_pack_value (bp, fn->is_thunk, 1);
1859 bp_pack_value (bp, fn->has_local_explicit_reg_vars, 1);
1860 bp_pack_value (bp, fn->after_tree_profile, 1);
1861 bp_pack_value (bp, fn->returns_pcc_struct, 1);
1862 bp_pack_value (bp, fn->returns_struct, 1);
1863 bp_pack_value (bp, fn->always_inline_functions_inlined, 1);
1864 bp_pack_value (bp, fn->after_inlining, 1);
1865 bp_pack_value (bp, fn->dont_save_pending_sizes_p, 1);
1866 bp_pack_value (bp, fn->stdarg, 1);
1867 bp_pack_value (bp, fn->has_nonlocal_label, 1);
1868 bp_pack_value (bp, fn->calls_alloca, 1);
1869 bp_pack_value (bp, fn->calls_setjmp, 1);
1870 bp_pack_value (bp, fn->va_list_fpr_size, 8);
1871 bp_pack_value (bp, fn->va_list_gpr_size, 8);
1872 lto_output_bitpack (ob->main_stream, bp);
1873 bitpack_delete (bp);
1875 /* Output current IL state of the function. */
1876 output_uleb128 (ob, fn->curr_properties);
1878 /* Output the static chain and non-local goto save area. */
1879 lto_output_tree_ref (ob, fn->static_chain_decl);
1880 lto_output_tree_ref (ob, fn->nonlocal_goto_save_area);
1882 /* Output all the local variables in the function. */
1883 lto_output_tree_ref (ob, fn->local_decls);
1885 /* Output the head of the arguments list. */
1886 lto_output_tree_ref (ob, DECL_ARGUMENTS (function));
1888 /* Output all the SSA names used in the function. */
1889 output_ssa_names (ob, fn);
1891 /* Output any exception handling regions. */
1892 output_eh_regions (ob, fn);
1894 /* Output DECL_INITIAL for the function, which contains the tree of
1896 lto_output_tree (ob, DECL_INITIAL (function), true);
1898 /* We will renumber the statements. The code that does this uses
1899 the same ordering that we use for serializing them so we can use
1900 the same code on the other end and not have to write out the
1901 statement numbers. */
1902 renumber_gimple_stmt_uids ();
1904 /* Output the code for the function. */
1905 FOR_ALL_BB_FN (bb, fn)
1906 output_bb (ob, bb, fn);
1908 /* The terminator for this function. */
1911 output_cfg (ob, fn);
1913 /* Create a section to hold the pickled output of this function. */
1914 produce_asm (ob, function);
1916 destroy_output_block (ob);
1918 current_function_decl = NULL;
1923 /* Return true if alias pair P belongs to the set of cgraph nodes in
1924 SET. If P is a an alias for a VAR_DECL, it can always be emitted.
1925 However, for FUNCTION_DECL aliases, we should only output the pair
1926 if it belongs to a function whose cgraph node is in SET.
1927 Otherwise, the LTRANS phase will get into trouble when finalizing
1928 aliases because the alias will refer to a function not defined in
1929 the file processed by LTRANS. */
1932 output_alias_pair_p (alias_pair *p, cgraph_node_set set, varpool_node_set vset)
1934 if (TREE_CODE (p->decl) == VAR_DECL)
1935 return varpool_node_in_set_p (varpool_node_for_asm (p->target), vset);
1937 /* Check if the assembler name for P->TARGET has its cgraph node in SET. */
1938 gcc_assert (TREE_CODE (p->decl) == FUNCTION_DECL);
1939 return cgraph_node_in_set_p (cgraph_node_for_asm (p->target), set);
1943 /* Output any unreferenced global symbol defined in SET, alias pairs
1947 output_unreferenced_globals (cgraph_node_set set, varpool_node_set vset)
1949 struct output_block *ob;
1952 struct varpool_node *vnode;
1954 ob = create_output_block (LTO_section_static_initializer);
1955 ob->cgraph_node = NULL;
1957 clear_line_info (ob);
1959 /* Make string 0 be a NULL string. */
1960 lto_output_1_stream (ob->string_stream, 0);
1962 /* Emit references for all the global symbols. If a global symbol
1963 was never referenced in any of the functions of this file, it
1964 would not be emitted otherwise. This will result in unreferenced
1965 symbols at link time if a file defines a global symbol but
1966 never references it. */
1967 FOR_EACH_STATIC_VARIABLE (vnode)
1968 if (vnode->needed && varpool_node_in_set_p (vnode, vset))
1970 tree var = vnode->decl;
1972 if (TREE_CODE (var) == VAR_DECL)
1974 /* Output the object in order to output references used in the
1976 lto_output_tree (ob, var, true);
1978 /* If it is public we also need a reference to the object itself. */
1979 if (TREE_PUBLIC (var))
1980 lto_output_tree_ref (ob, var);
1986 /* Emit the alias pairs for the nodes in SET. */
1987 for (i = 0; VEC_iterate (alias_pair, alias_pairs, i, p); i++)
1989 if (output_alias_pair_p (p, set, vset))
1991 lto_output_tree_ref (ob, p->decl);
1992 lto_output_tree_ref (ob, p->target);
1998 produce_asm (ob, NULL);
1999 destroy_output_block (ob);
2003 /* Copy the function body of NODE without deserializing. */
2006 copy_function (struct cgraph_node *node)
2008 tree function = node->decl;
2009 struct lto_file_decl_data *file_data = node->local.lto_file_data;
2010 struct lto_output_stream *output_stream = XCNEW (struct lto_output_stream);
2013 const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (function));
2014 char *section_name =
2015 lto_get_section_name (LTO_section_function_body, name);
2017 struct lto_in_decl_state *in_state;
2018 struct lto_out_decl_state *out_state = lto_get_out_decl_state ();
2020 lto_begin_section (section_name, !flag_wpa);
2021 free (section_name);
2023 /* We may have renamed the declaration, e.g., a static function. */
2024 name = lto_get_decl_name_mapping (file_data, name);
2026 data = lto_get_section_data (file_data, LTO_section_function_body,
2030 /* Do a bit copy of the function body. */
2031 lto_output_data_stream (output_stream, data, len);
2032 lto_write_stream (output_stream);
2036 lto_get_function_in_decl_state (node->local.lto_file_data, function);
2037 gcc_assert (in_state);
2039 for (i = 0; i < LTO_N_DECL_STREAMS; i++)
2041 size_t n = in_state->streams[i].size;
2042 tree *trees = in_state->streams[i].trees;
2043 struct lto_tree_ref_encoder *encoder = &(out_state->streams[i]);
2045 /* The out state must have the same indices and the in state.
2046 So just copy the vector. All the encoders in the in state
2047 must be empty where we reach here. */
2048 gcc_assert (lto_tree_ref_encoder_size (encoder) == 0);
2049 for (j = 0; j < n; j++)
2050 VEC_safe_push (tree, heap, encoder->trees, trees[j]);
2051 encoder->next_index = n;
2054 lto_free_section_data (file_data, LTO_section_function_body, name,
2056 free (output_stream);
2061 /* Initialize the LTO writer. */
2064 lto_writer_init (void)
2066 lto_streamer_init ();
2070 /* Main entry point from the pass manager. */
2073 lto_output (cgraph_node_set set, varpool_node_set vset)
2075 struct cgraph_node *node;
2076 struct lto_out_decl_state *decl_state;
2077 cgraph_node_set_iterator csi;
2078 bitmap output = lto_bitmap_alloc ();
2082 /* Process only the functions with bodies. */
2083 for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
2085 node = csi_node (csi);
2086 if (node->analyzed && !bitmap_bit_p (output, DECL_UID (node->decl)))
2088 bitmap_set_bit (output, DECL_UID (node->decl));
2089 decl_state = lto_new_out_decl_state ();
2090 lto_push_out_decl_state (decl_state);
2092 output_function (node);
2094 copy_function (node);
2095 gcc_assert (lto_get_out_decl_state () == decl_state);
2096 lto_pop_out_decl_state ();
2097 lto_record_function_out_decl_state (node->decl, decl_state);
2101 /* Emit the callgraph after emitting function bodies. This needs to
2102 be done now to make sure that all the statements in every function
2103 have been renumbered so that edges can be associated with call
2104 statements using the statement UIDs. */
2105 output_cgraph (set);
2106 output_varpool (vset);
2108 lto_bitmap_free (output);
2111 struct ipa_opt_pass_d pass_ipa_lto_gimple_out =
2115 "lto_gimple_out", /* name */
2116 gate_lto_out, /* gate */
2120 0, /* static_pass_number */
2121 TV_IPA_LTO_GIMPLE_IO, /* tv_id */
2122 0, /* properties_required */
2123 0, /* properties_provided */
2124 0, /* properties_destroyed */
2125 0, /* todo_flags_start */
2126 TODO_dump_func /* todo_flags_finish */
2128 NULL, /* generate_summary */
2129 lto_output, /* write_summary */
2130 NULL, /* read_summary */
2131 lto_output, /* write_optimization_summary */
2132 NULL, /* read_optimization_summary */
2133 NULL, /* stmt_fixup */
2135 NULL, /* function_transform */
2136 NULL /* variable_transform */
2140 /* Write each node in encoded by ENCODER to OB, as well as those reachable
2141 from it and required for correct representation of its semantics.
2142 Each node in ENCODER must be a global declaration or a type. A node
2143 is written only once, even if it appears multiple times in the
2144 vector. Certain transitively-reachable nodes, such as those
2145 representing expressions, may be duplicated, but such nodes
2146 must not appear in ENCODER itself. */
2149 write_global_stream (struct output_block *ob,
2150 struct lto_tree_ref_encoder *encoder)
2154 const size_t size = lto_tree_ref_encoder_size (encoder);
2156 for (index = 0; index < size; index++)
2158 t = lto_tree_ref_encoder_get_tree (encoder, index);
2159 if (!lto_streamer_cache_lookup (ob->writer_cache, t, NULL))
2160 lto_output_tree (ob, t, false);
2165 /* Write a sequence of indices into the globals vector corresponding
2166 to the trees in ENCODER. These are used by the reader to map the
2167 indices used to refer to global entities within function bodies to
2171 write_global_references (struct output_block *ob,
2172 struct lto_output_stream *ref_stream,
2173 struct lto_tree_ref_encoder *encoder)
2177 const int32_t size = lto_tree_ref_encoder_size (encoder);
2179 /* Write size as 32-bit unsigned. */
2180 lto_output_data_stream (ref_stream, &size, sizeof (int32_t));
2182 for (index = 0; index < size; index++)
2186 t = lto_tree_ref_encoder_get_tree (encoder, index);
2187 lto_streamer_cache_lookup (ob->writer_cache, t, &slot_num);
2188 gcc_assert (slot_num >= 0);
2189 lto_output_data_stream (ref_stream, &slot_num, sizeof slot_num);
2194 /* Write all the streams in an lto_out_decl_state STATE using
2195 output block OB and output stream OUT_STREAM. */
2198 lto_output_decl_state_streams (struct output_block *ob,
2199 struct lto_out_decl_state *state)
2203 for (i = 0; i < LTO_N_DECL_STREAMS; i++)
2204 write_global_stream (ob, &state->streams[i]);
2208 /* Write all the references in an lto_out_decl_state STATE using
2209 output block OB and output stream OUT_STREAM. */
2212 lto_output_decl_state_refs (struct output_block *ob,
2213 struct lto_output_stream *out_stream,
2214 struct lto_out_decl_state *state)
2220 /* Write reference to FUNCTION_DECL. If there is not function,
2221 write reference to void_type_node. */
2222 decl = (state->fn_decl) ? state->fn_decl : void_type_node;
2223 lto_streamer_cache_lookup (ob->writer_cache, decl, &ref);
2224 gcc_assert (ref >= 0);
2225 lto_output_data_stream (out_stream, &ref, sizeof (int32_t));
2227 for (i = 0; i < LTO_N_DECL_STREAMS; i++)
2228 write_global_references (ob, out_stream, &state->streams[i]);
2232 /* Return the written size of STATE. */
2235 lto_out_decl_state_written_size (struct lto_out_decl_state *state)
2240 size = sizeof (int32_t); /* fn_ref. */
2241 for (i = 0; i < LTO_N_DECL_STREAMS; i++)
2243 size += sizeof (int32_t); /* vector size. */
2244 size += (lto_tree_ref_encoder_size (&state->streams[i])
2245 * sizeof (int32_t));
2251 /* Helper function of write_symbols_of_kind. CACHE is the streamer
2252 cache with all the pickled nodes. STREAM is the stream where to
2253 write the table. V is a vector with the DECLs that should be on
2254 the table. SEEN is a bitmap of symbols written so far. */
2257 write_symbol_vec (struct lto_streamer_cache_d *cache,
2258 struct lto_output_stream *stream,
2259 VEC(tree,heap) *v, bitmap seen)
2264 for (index = 0; VEC_iterate(tree, v, index, t); index++)
2267 enum gcc_plugin_symbol_kind kind;
2268 enum gcc_plugin_symbol_visibility visibility;
2273 /* None of the following kinds of symbols are needed in the
2275 if (!TREE_PUBLIC (t)
2276 || is_builtin_fn (t)
2277 || DECL_ABSTRACT (t)
2278 || TREE_CODE (t) == RESULT_DECL)
2281 gcc_assert (TREE_CODE (t) == VAR_DECL
2282 || TREE_CODE (t) == FUNCTION_DECL);
2284 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (t));
2286 /* FIXME lto: this is from assemble_name_raw in varasm.c. For some
2287 architectures we might have to do the same name manipulations that
2288 ASM_OUTPUT_LABELREF does. */
2292 lto_streamer_cache_lookup (cache, t, &slot_num);
2293 gcc_assert (slot_num >= 0);
2295 /* Avoid duplicate symbols. */
2296 if (bitmap_bit_p (seen, slot_num))
2299 bitmap_set_bit (seen, slot_num);
2301 if (DECL_EXTERNAL (t))
2304 kind = GCCPK_WEAKUNDEF;
2311 kind = GCCPK_WEAKDEF;
2312 else if (DECL_COMMON (t))
2313 kind = GCCPK_COMMON;
2318 switch (DECL_VISIBILITY(t))
2320 case VISIBILITY_DEFAULT:
2321 visibility = GCCPV_DEFAULT;
2323 case VISIBILITY_PROTECTED:
2324 visibility = GCCPV_PROTECTED;
2326 case VISIBILITY_HIDDEN:
2327 visibility = GCCPV_HIDDEN;
2329 case VISIBILITY_INTERNAL:
2330 visibility = GCCPV_INTERNAL;
2334 if (kind == GCCPK_COMMON
2336 && TREE_CODE (DECL_SIZE (t)) == INTEGER_CST)
2337 size = (((uint64_t) TREE_INT_CST_HIGH (DECL_SIZE (t))) << 32)
2338 | TREE_INT_CST_LOW (DECL_SIZE (t));
2342 if (DECL_ONE_ONLY (t))
2343 comdat = IDENTIFIER_POINTER (DECL_COMDAT_GROUP (t));
2347 lto_output_data_stream (stream, name, strlen (name) + 1);
2348 lto_output_data_stream (stream, comdat, strlen (comdat) + 1);
2349 lto_output_data_stream (stream, &kind, 1);
2350 lto_output_data_stream (stream, &visibility, 1);
2351 lto_output_data_stream (stream, &size, 8);
2352 lto_output_data_stream (stream, &slot_num, 4);
2357 /* Write IL symbols of KIND. CACHE is the streamer cache with all the
2358 pickled nodes. SEEN is a bitmap of symbols written so far. */
2361 write_symbols_of_kind (lto_decl_stream_e_t kind,
2362 struct lto_streamer_cache_d *cache, bitmap seen)
2364 struct lto_out_decl_state *out_state;
2365 struct lto_output_stream stream;
2367 VEC_length (lto_out_decl_state_ptr, lto_function_decl_states);
2370 memset (&stream, 0, sizeof (stream));
2371 out_state = lto_get_out_decl_state ();
2372 write_symbol_vec (cache, &stream, out_state->streams[kind].trees, seen);
2374 for (idx = 0; idx < num_fns; idx++)
2377 VEC_index (lto_out_decl_state_ptr, lto_function_decl_states, idx);
2378 write_symbol_vec (cache, &stream, out_state->streams[kind].trees, seen);
2381 lto_write_stream (&stream);
2385 /* Write an IL symbol table. CACHE is the streamer cache with all the
2389 produce_symtab (struct lto_streamer_cache_d *cache)
2391 char *section_name = lto_get_section_name (LTO_section_symtab, NULL);
2394 lto_begin_section (section_name, false);
2395 free (section_name);
2397 seen = lto_bitmap_alloc ();
2398 write_symbols_of_kind (LTO_DECL_STREAM_FN_DECL, cache, seen);
2399 write_symbols_of_kind (LTO_DECL_STREAM_VAR_DECL, cache, seen);
2400 lto_bitmap_free (seen);
2406 /* This pass is run after all of the functions are serialized and all
2407 of the IPA passes have written their serialized forms. This pass
2408 causes the vector of all of the global decls and types used from
2409 this file to be written in to a section that can then be read in to
2410 recover these on other side. */
2413 produce_asm_for_decls (cgraph_node_set set, varpool_node_set vset)
2415 struct lto_out_decl_state *out_state;
2416 struct lto_out_decl_state *fn_out_state;
2417 struct lto_decl_header header;
2419 struct output_block *ob;
2420 struct lto_output_stream *header_stream, *decl_state_stream;
2421 unsigned idx, num_fns;
2422 size_t decl_state_size;
2423 int32_t num_decl_states;
2425 ob = create_output_block (LTO_section_decls);
2428 /* Write out unreferenced globals, alias pairs and labels. We defer
2429 doing this until now so that we can write out only what is
2431 output_unreferenced_globals (set, vset);
2433 memset (&header, 0, sizeof (struct lto_decl_header));
2435 section_name = lto_get_section_name (LTO_section_decls, NULL);
2436 lto_begin_section (section_name, !flag_wpa);
2437 free (section_name);
2439 /* Make string 0 be a NULL string. */
2440 lto_output_1_stream (ob->string_stream, 0);
2442 /* Write the global symbols. */
2443 out_state = lto_get_out_decl_state ();
2444 num_fns = VEC_length (lto_out_decl_state_ptr, lto_function_decl_states);
2445 lto_output_decl_state_streams (ob, out_state);
2446 for (idx = 0; idx < num_fns; idx++)
2449 VEC_index (lto_out_decl_state_ptr, lto_function_decl_states, idx);
2450 lto_output_decl_state_streams (ob, fn_out_state);
2453 header.lto_header.major_version = LTO_major_version;
2454 header.lto_header.minor_version = LTO_minor_version;
2455 header.lto_header.section_type = LTO_section_decls;
2457 /* Currently not used. This field would allow us to preallocate
2458 the globals vector, so that it need not be resized as it is extended. */
2459 header.num_nodes = -1;
2461 /* Compute the total size of all decl out states. */
2462 decl_state_size = sizeof (int32_t);
2463 decl_state_size += lto_out_decl_state_written_size (out_state);
2464 for (idx = 0; idx < num_fns; idx++)
2467 VEC_index (lto_out_decl_state_ptr, lto_function_decl_states, idx);
2468 decl_state_size += lto_out_decl_state_written_size (fn_out_state);
2470 header.decl_state_size = decl_state_size;
2472 header.main_size = ob->main_stream->total_size;
2473 header.string_size = ob->string_stream->total_size;
2475 header_stream = XCNEW (struct lto_output_stream);
2476 lto_output_data_stream (header_stream, &header, sizeof header);
2477 lto_write_stream (header_stream);
2478 free (header_stream);
2480 /* Write the main out-decl state, followed by out-decl states of
2482 decl_state_stream = ((struct lto_output_stream *)
2483 xcalloc (1, sizeof (struct lto_output_stream)));
2484 num_decl_states = num_fns + 1;
2485 lto_output_data_stream (decl_state_stream, &num_decl_states,
2486 sizeof (num_decl_states));
2487 lto_output_decl_state_refs (ob, decl_state_stream, out_state);
2488 for (idx = 0; idx < num_fns; idx++)
2491 VEC_index (lto_out_decl_state_ptr, lto_function_decl_states, idx);
2492 lto_output_decl_state_refs (ob, decl_state_stream, fn_out_state);
2494 lto_write_stream (decl_state_stream);
2495 free(decl_state_stream);
2497 lto_write_stream (ob->main_stream);
2498 lto_write_stream (ob->string_stream);
2502 /* Write the symbol table. */
2503 produce_symtab (ob->writer_cache);
2505 /* Write command line opts. */
2506 lto_write_options ();
2508 /* Deallocate memory and clean up. */
2509 lto_cgraph_encoder_delete (ob->decl_state->cgraph_node_encoder);
2510 VEC_free (lto_out_decl_state_ptr, heap, lto_function_decl_states);
2511 lto_function_decl_states = NULL;
2512 destroy_output_block (ob);
2516 struct ipa_opt_pass_d pass_ipa_lto_finish_out =
2520 "lto_decls_out", /* name */
2521 gate_lto_out, /* gate */
2525 0, /* static_pass_number */
2526 TV_IPA_LTO_DECL_IO, /* tv_id */
2527 0, /* properties_required */
2528 0, /* properties_provided */
2529 0, /* properties_destroyed */
2530 0, /* todo_flags_start */
2531 0 /* todo_flags_finish */
2533 NULL, /* generate_summary */
2534 produce_asm_for_decls, /* write_summary */
2535 NULL, /* read_summary */
2536 produce_asm_for_decls, /* write_optimization_summary */
2537 NULL, /* read_optimization_summary */
2538 NULL, /* stmt_fixup */
2540 NULL, /* function_transform */
2541 NULL /* variable_transform */