1 /* Routines for emitting trees to a file stream.
3 Copyright 2011 Free Software Foundation, Inc.
4 Contributed by Diego Novillo <dnovillo@google.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
24 #include "coretypes.h"
25 #include "diagnostic.h"
27 #include "tree-streamer.h"
28 #include "data-streamer.h"
29 #include "streamer-hooks.h"
31 /* Output the STRING constant to the string
32 table in OB. Then put the index onto the INDEX_STREAM. */
35 streamer_write_string_cst (struct output_block *ob,
36 struct lto_output_stream *index_stream,
39 streamer_write_string_with_length (ob, index_stream,
40 string ? TREE_STRING_POINTER (string)
42 string ? TREE_STRING_LENGTH (string) : 0,
47 /* Output the identifier ID to the string
48 table in OB. Then put the index onto the INDEX_STREAM. */
51 write_identifier (struct output_block *ob,
52 struct lto_output_stream *index_stream,
55 streamer_write_string_with_length (ob, index_stream,
56 IDENTIFIER_POINTER (id),
57 IDENTIFIER_LENGTH (id),
62 /* Pack all the non-pointer fields of the TS_BASE structure of
63 expression EXPR into bitpack BP. */
66 pack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
68 bp_pack_value (bp, TREE_CODE (expr), 16);
71 bp_pack_value (bp, TREE_SIDE_EFFECTS (expr), 1);
72 bp_pack_value (bp, TREE_CONSTANT (expr), 1);
73 bp_pack_value (bp, TREE_READONLY (expr), 1);
75 /* TREE_PUBLIC is used on types to indicate that the type
76 has a TYPE_CACHED_VALUES vector. This is not streamed out,
77 so we skip it here. */
78 bp_pack_value (bp, TREE_PUBLIC (expr), 1);
81 bp_pack_value (bp, 0, 4);
82 bp_pack_value (bp, TREE_ADDRESSABLE (expr), 1);
83 bp_pack_value (bp, TREE_THIS_VOLATILE (expr), 1);
85 bp_pack_value (bp, DECL_UNSIGNED (expr), 1);
86 else if (TYPE_P (expr))
87 bp_pack_value (bp, TYPE_UNSIGNED (expr), 1);
89 bp_pack_value (bp, 0, 1);
90 /* We write debug info two times, do not confuse the second one. */
91 bp_pack_value (bp, ((TYPE_P (expr) || TREE_CODE (expr) == TYPE_DECL)
92 ? 0 : TREE_ASM_WRITTEN (expr)), 1);
94 bp_pack_value (bp, TYPE_ARTIFICIAL (expr), 1);
96 bp_pack_value (bp, TREE_NO_WARNING (expr), 1);
97 bp_pack_value (bp, TREE_USED (expr), 1);
98 bp_pack_value (bp, TREE_NOTHROW (expr), 1);
99 bp_pack_value (bp, TREE_STATIC (expr), 1);
100 bp_pack_value (bp, TREE_PRIVATE (expr), 1);
101 bp_pack_value (bp, TREE_PROTECTED (expr), 1);
102 bp_pack_value (bp, TREE_DEPRECATED (expr), 1);
105 bp_pack_value (bp, TYPE_SATURATING (expr), 1);
106 bp_pack_value (bp, TYPE_ADDR_SPACE (expr), 8);
108 else if (TREE_CODE (expr) == SSA_NAME)
109 bp_pack_value (bp, SSA_NAME_IS_DEFAULT_DEF (expr), 1);
111 bp_pack_value (bp, 0, 1);
115 /* Pack all the non-pointer fields of the TS_REAL_CST structure of
116 expression EXPR into bitpack BP. */
119 pack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
124 r = TREE_REAL_CST (expr);
125 bp_pack_value (bp, r.cl, 2);
126 bp_pack_value (bp, r.decimal, 1);
127 bp_pack_value (bp, r.sign, 1);
128 bp_pack_value (bp, r.signalling, 1);
129 bp_pack_value (bp, r.canonical, 1);
130 bp_pack_value (bp, r.uexp, EXP_BITS);
131 for (i = 0; i < SIGSZ; i++)
132 bp_pack_value (bp, r.sig[i], HOST_BITS_PER_LONG);
136 /* Pack all the non-pointer fields of the TS_FIXED_CST structure of
137 expression EXPR into bitpack BP. */
140 pack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
142 struct fixed_value fv = TREE_FIXED_CST (expr);
143 bp_pack_enum (bp, machine_mode, MAX_MACHINE_MODE, fv.mode);
144 bp_pack_var_len_int (bp, fv.data.low);
145 bp_pack_var_len_int (bp, fv.data.high);
149 /* Pack all the non-pointer fields of the TS_DECL_COMMON structure
150 of expression EXPR into bitpack BP. */
153 pack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
155 bp_pack_enum (bp, machine_mode, MAX_MACHINE_MODE, DECL_MODE (expr));
156 bp_pack_value (bp, DECL_NONLOCAL (expr), 1);
157 bp_pack_value (bp, DECL_VIRTUAL_P (expr), 1);
158 bp_pack_value (bp, DECL_IGNORED_P (expr), 1);
159 bp_pack_value (bp, DECL_ABSTRACT (expr), 1);
160 bp_pack_value (bp, DECL_ARTIFICIAL (expr), 1);
161 bp_pack_value (bp, DECL_USER_ALIGN (expr), 1);
162 bp_pack_value (bp, DECL_PRESERVE_P (expr), 1);
163 bp_pack_value (bp, DECL_DEBUG_EXPR_IS_FROM (expr), 1);
164 bp_pack_value (bp, DECL_EXTERNAL (expr), 1);
165 bp_pack_value (bp, DECL_GIMPLE_REG_P (expr), 1);
166 bp_pack_var_len_unsigned (bp, DECL_ALIGN (expr));
168 if (TREE_CODE (expr) == LABEL_DECL)
170 /* Note that we do not write LABEL_DECL_UID. The reader will
171 always assume an initial value of -1 so that the
172 label_to_block_map is recreated by gimple_set_bb. */
173 bp_pack_value (bp, DECL_ERROR_ISSUED (expr), 1);
174 bp_pack_var_len_unsigned (bp, EH_LANDING_PAD_NR (expr));
177 if (TREE_CODE (expr) == FIELD_DECL)
179 bp_pack_value (bp, DECL_PACKED (expr), 1);
180 bp_pack_value (bp, DECL_NONADDRESSABLE_P (expr), 1);
181 bp_pack_value (bp, expr->decl_common.off_align, 8);
184 if (TREE_CODE (expr) == RESULT_DECL
185 || TREE_CODE (expr) == PARM_DECL
186 || TREE_CODE (expr) == VAR_DECL)
188 bp_pack_value (bp, DECL_BY_REFERENCE (expr), 1);
189 if (TREE_CODE (expr) == VAR_DECL
190 || TREE_CODE (expr) == PARM_DECL)
191 bp_pack_value (bp, DECL_HAS_VALUE_EXPR_P (expr), 1);
192 bp_pack_value (bp, DECL_RESTRICTED_P (expr), 1);
197 /* Pack all the non-pointer fields of the TS_DECL_WRTL structure
198 of expression EXPR into bitpack BP. */
201 pack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
203 bp_pack_value (bp, DECL_REGISTER (expr), 1);
207 /* Pack all the non-pointer fields of the TS_DECL_WITH_VIS structure
208 of expression EXPR into bitpack BP. */
211 pack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
213 bp_pack_value (bp, DECL_DEFER_OUTPUT (expr), 1);
214 bp_pack_value (bp, DECL_COMMON (expr), 1);
215 bp_pack_value (bp, DECL_DLLIMPORT_P (expr), 1);
216 bp_pack_value (bp, DECL_WEAK (expr), 1);
217 bp_pack_value (bp, DECL_SEEN_IN_BIND_EXPR_P (expr), 1);
218 bp_pack_value (bp, DECL_COMDAT (expr), 1);
219 bp_pack_value (bp, DECL_VISIBILITY (expr), 2);
220 bp_pack_value (bp, DECL_VISIBILITY_SPECIFIED (expr), 1);
222 if (TREE_CODE (expr) == VAR_DECL)
224 bp_pack_value (bp, DECL_HARD_REGISTER (expr), 1);
225 bp_pack_value (bp, DECL_IN_TEXT_SECTION (expr), 1);
226 bp_pack_value (bp, DECL_IN_CONSTANT_POOL (expr), 1);
227 bp_pack_value (bp, DECL_TLS_MODEL (expr), 3);
230 if (VAR_OR_FUNCTION_DECL_P (expr))
231 bp_pack_var_len_unsigned (bp, DECL_INIT_PRIORITY (expr));
235 /* Pack all the non-pointer fields of the TS_FUNCTION_DECL structure
236 of expression EXPR into bitpack BP. */
239 pack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
241 /* For normal/md builtins we only write the class and code, so they
242 should never be handled here. */
243 gcc_assert (!streamer_handle_as_builtin_p (expr));
245 bp_pack_enum (bp, built_in_class, BUILT_IN_LAST,
246 DECL_BUILT_IN_CLASS (expr));
247 bp_pack_value (bp, DECL_STATIC_CONSTRUCTOR (expr), 1);
248 bp_pack_value (bp, DECL_STATIC_DESTRUCTOR (expr), 1);
249 bp_pack_value (bp, DECL_UNINLINABLE (expr), 1);
250 bp_pack_value (bp, DECL_POSSIBLY_INLINED (expr), 1);
251 bp_pack_value (bp, DECL_IS_NOVOPS (expr), 1);
252 bp_pack_value (bp, DECL_IS_RETURNS_TWICE (expr), 1);
253 bp_pack_value (bp, DECL_IS_MALLOC (expr), 1);
254 bp_pack_value (bp, DECL_IS_OPERATOR_NEW (expr), 1);
255 bp_pack_value (bp, DECL_DECLARED_INLINE_P (expr), 1);
256 bp_pack_value (bp, DECL_STATIC_CHAIN (expr), 1);
257 bp_pack_value (bp, DECL_NO_INLINE_WARNING_P (expr), 1);
258 bp_pack_value (bp, DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr), 1);
259 bp_pack_value (bp, DECL_NO_LIMIT_STACK (expr), 1);
260 bp_pack_value (bp, DECL_DISREGARD_INLINE_LIMITS (expr), 1);
261 bp_pack_value (bp, DECL_PURE_P (expr), 1);
262 bp_pack_value (bp, DECL_LOOPING_CONST_OR_PURE_P (expr), 1);
263 if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
264 bp_pack_value (bp, DECL_FUNCTION_CODE (expr), 11);
265 if (DECL_STATIC_DESTRUCTOR (expr))
266 bp_pack_var_len_unsigned (bp, DECL_FINI_PRIORITY (expr));
270 /* Pack all the non-pointer fields of the TS_TYPE_COMMON structure
271 of expression EXPR into bitpack BP. */
274 pack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
276 bp_pack_enum (bp, machine_mode, MAX_MACHINE_MODE, TYPE_MODE (expr));
277 bp_pack_value (bp, TYPE_STRING_FLAG (expr), 1);
278 bp_pack_value (bp, TYPE_NO_FORCE_BLK (expr), 1);
279 bp_pack_value (bp, TYPE_NEEDS_CONSTRUCTING (expr), 1);
280 if (RECORD_OR_UNION_TYPE_P (expr))
281 bp_pack_value (bp, TYPE_TRANSPARENT_AGGR (expr), 1);
282 bp_pack_value (bp, TYPE_PACKED (expr), 1);
283 bp_pack_value (bp, TYPE_RESTRICT (expr), 1);
284 bp_pack_value (bp, TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr), 2);
285 bp_pack_value (bp, TYPE_USER_ALIGN (expr), 1);
286 bp_pack_value (bp, TYPE_READONLY (expr), 1);
287 bp_pack_var_len_unsigned (bp, TYPE_PRECISION (expr));
288 bp_pack_var_len_unsigned (bp, TYPE_ALIGN (expr));
289 bp_pack_var_len_int (bp, TYPE_ALIAS_SET (expr) == 0 ? 0 : -1);
293 /* Pack all the non-pointer fields of the TS_BLOCK structure
294 of expression EXPR into bitpack BP. */
297 pack_ts_block_value_fields (struct bitpack_d *bp, tree expr)
299 bp_pack_value (bp, BLOCK_ABSTRACT (expr), 1);
300 /* BLOCK_NUMBER is recomputed. */
303 /* Pack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL structure
304 of expression EXPR into bitpack BP. */
307 pack_ts_translation_unit_decl_value_fields (struct bitpack_d *bp ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
312 /* Pack all the bitfields in EXPR into a bit pack. */
315 streamer_pack_tree_bitfields (struct bitpack_d *bp, tree expr)
319 code = TREE_CODE (expr);
321 /* Note that all these functions are highly sensitive to changes in
322 the types and sizes of each of the fields being packed. */
323 pack_ts_base_value_fields (bp, expr);
325 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
326 pack_ts_real_cst_value_fields (bp, expr);
328 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
329 pack_ts_fixed_cst_value_fields (bp, expr);
331 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
332 pack_ts_decl_common_value_fields (bp, expr);
334 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
335 pack_ts_decl_wrtl_value_fields (bp, expr);
337 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
338 pack_ts_decl_with_vis_value_fields (bp, expr);
340 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
341 pack_ts_function_decl_value_fields (bp, expr);
343 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
344 pack_ts_type_common_value_fields (bp, expr);
346 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
347 pack_ts_block_value_fields (bp, expr);
349 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
350 pack_ts_translation_unit_decl_value_fields (bp, expr);
354 /* Write the code and class of builtin EXPR to output block OB. IX is
355 the index into the streamer cache where EXPR is stored.*/
358 streamer_write_builtin (struct output_block *ob, tree expr)
360 gcc_assert (streamer_handle_as_builtin_p (expr));
362 if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD
363 && !targetm.builtin_decl)
364 sorry ("tree bytecode streams do not support machine specific builtin "
365 "functions on this target");
367 streamer_write_record_start (ob, LTO_builtin_decl);
368 streamer_write_enum (ob->main_stream, built_in_class, BUILT_IN_LAST,
369 DECL_BUILT_IN_CLASS (expr));
370 streamer_write_uhwi (ob, DECL_FUNCTION_CODE (expr));
372 if (DECL_ASSEMBLER_NAME_SET_P (expr))
374 /* When the assembler name of a builtin gets a user name,
375 the new name is always prefixed with '*' by
376 set_builtin_user_assembler_name. So, to prevent the
377 reader side from adding a second '*', we omit it here. */
378 const char *str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (expr));
379 if (strlen (str) > 1 && str[0] == '*')
380 streamer_write_string (ob, ob->main_stream, &str[1], true);
382 streamer_write_string (ob, ob->main_stream, NULL, true);
385 streamer_write_string (ob, ob->main_stream, NULL, true);
389 /* Emit the chain of tree nodes starting at T. OB is the output block
390 to write to. REF_P is true if chain elements should be emitted
394 streamer_write_chain (struct output_block *ob, tree t, bool ref_p)
398 count = list_length (t);
399 streamer_write_hwi (ob, count);
400 for (i = 0; i < count; i++)
404 /* Clear TREE_CHAIN to avoid blindly recursing into the rest
406 saved_chain = TREE_CHAIN (t);
407 TREE_CHAIN (t) = NULL_TREE;
409 /* We avoid outputting external vars or functions by reference
410 to the global decls section as we do not want to have them
411 enter decl merging. This is, of course, only for the call
412 for streaming BLOCK_VARS, but other callers are safe. */
413 stream_write_tree (ob, t,
414 ref_p && !(VAR_OR_FUNCTION_DECL_P (t)
415 && DECL_EXTERNAL (t)));
417 TREE_CHAIN (t) = saved_chain;
423 /* Write all pointer fields in the TS_COMMON structure of EXPR to output
424 block OB. If REF_P is true, write a reference to EXPR's pointer
428 write_ts_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
430 if (TREE_CODE (expr) != IDENTIFIER_NODE)
431 stream_write_tree (ob, TREE_TYPE (expr), ref_p);
435 /* Write all pointer fields in the TS_VECTOR structure of EXPR to output
436 block OB. If REF_P is true, write a reference to EXPR's pointer
440 write_ts_vector_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
442 streamer_write_chain (ob, TREE_VECTOR_CST_ELTS (expr), ref_p);
446 /* Write all pointer fields in the TS_COMPLEX structure of EXPR to output
447 block OB. If REF_P is true, write a reference to EXPR's pointer
451 write_ts_complex_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
453 stream_write_tree (ob, TREE_REALPART (expr), ref_p);
454 stream_write_tree (ob, TREE_IMAGPART (expr), ref_p);
458 /* Write all pointer fields in the TS_DECL_MINIMAL structure of EXPR
459 to output block OB. If REF_P is true, write a reference to EXPR's
463 write_ts_decl_minimal_tree_pointers (struct output_block *ob, tree expr,
466 stream_write_tree (ob, DECL_NAME (expr), ref_p);
467 stream_write_tree (ob, DECL_CONTEXT (expr), ref_p);
468 lto_output_location (ob, DECL_SOURCE_LOCATION (expr));
472 /* Write all pointer fields in the TS_DECL_COMMON structure of EXPR to
473 output block OB. If REF_P is true, write a reference to EXPR's
477 write_ts_decl_common_tree_pointers (struct output_block *ob, tree expr,
480 stream_write_tree (ob, DECL_SIZE (expr), ref_p);
481 stream_write_tree (ob, DECL_SIZE_UNIT (expr), ref_p);
483 /* Note, DECL_INITIAL is not handled here. Since DECL_INITIAL needs
484 special handling in LTO, it must be handled by streamer hooks. */
486 stream_write_tree (ob, DECL_ATTRIBUTES (expr), ref_p);
488 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
489 for early inlining so drop it on the floor instead of ICEing in
492 if (TREE_CODE (expr) == PARM_DECL)
493 streamer_write_chain (ob, TREE_CHAIN (expr), ref_p);
495 if ((TREE_CODE (expr) == VAR_DECL
496 || TREE_CODE (expr) == PARM_DECL)
497 && DECL_HAS_VALUE_EXPR_P (expr))
498 stream_write_tree (ob, DECL_VALUE_EXPR (expr), ref_p);
500 if (TREE_CODE (expr) == VAR_DECL)
501 stream_write_tree (ob, DECL_DEBUG_EXPR (expr), ref_p);
505 /* Write all pointer fields in the TS_DECL_NON_COMMON structure of
506 EXPR to output block OB. If REF_P is true, write a reference to EXPR's
510 write_ts_decl_non_common_tree_pointers (struct output_block *ob, tree expr,
513 if (TREE_CODE (expr) == FUNCTION_DECL)
515 stream_write_tree (ob, DECL_ARGUMENTS (expr), ref_p);
516 stream_write_tree (ob, DECL_RESULT (expr), ref_p);
518 else if (TREE_CODE (expr) == TYPE_DECL)
519 stream_write_tree (ob, DECL_ORIGINAL_TYPE (expr), ref_p);
520 stream_write_tree (ob, DECL_VINDEX (expr), ref_p);
524 /* Write all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
525 to output block OB. If REF_P is true, write a reference to EXPR's
529 write_ts_decl_with_vis_tree_pointers (struct output_block *ob, tree expr,
532 /* Make sure we don't inadvertently set the assembler name. */
533 if (DECL_ASSEMBLER_NAME_SET_P (expr))
534 stream_write_tree (ob, DECL_ASSEMBLER_NAME (expr), ref_p);
536 stream_write_tree (ob, NULL_TREE, false);
538 stream_write_tree (ob, DECL_SECTION_NAME (expr), ref_p);
539 stream_write_tree (ob, DECL_COMDAT_GROUP (expr), ref_p);
543 /* Write all pointer fields in the TS_FIELD_DECL structure of EXPR to
544 output block OB. If REF_P is true, write a reference to EXPR's
548 write_ts_field_decl_tree_pointers (struct output_block *ob, tree expr,
551 stream_write_tree (ob, DECL_FIELD_OFFSET (expr), ref_p);
552 stream_write_tree (ob, DECL_BIT_FIELD_TYPE (expr), ref_p);
553 stream_write_tree (ob, DECL_QUALIFIER (expr), ref_p);
554 stream_write_tree (ob, DECL_FIELD_BIT_OFFSET (expr), ref_p);
555 stream_write_tree (ob, DECL_FCONTEXT (expr), ref_p);
556 streamer_write_chain (ob, TREE_CHAIN (expr), ref_p);
560 /* Write all pointer fields in the TS_FUNCTION_DECL structure of EXPR
561 to output block OB. If REF_P is true, write a reference to EXPR's
565 write_ts_function_decl_tree_pointers (struct output_block *ob, tree expr,
568 /* DECL_STRUCT_FUNCTION is handled by lto_output_function. FIXME lto,
569 maybe it should be handled here? */
570 stream_write_tree (ob, DECL_FUNCTION_PERSONALITY (expr), ref_p);
571 stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p);
572 stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr), ref_p);
576 /* Write all pointer fields in the TS_TYPE_COMMON structure of EXPR to
577 output block OB. If REF_P is true, write a reference to EXPR's
581 write_ts_type_common_tree_pointers (struct output_block *ob, tree expr,
584 stream_write_tree (ob, TYPE_SIZE (expr), ref_p);
585 stream_write_tree (ob, TYPE_SIZE_UNIT (expr), ref_p);
586 stream_write_tree (ob, TYPE_ATTRIBUTES (expr), ref_p);
587 stream_write_tree (ob, TYPE_NAME (expr), ref_p);
588 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
589 reconstructed during fixup. */
590 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
592 stream_write_tree (ob, TYPE_MAIN_VARIANT (expr), ref_p);
593 stream_write_tree (ob, TYPE_CONTEXT (expr), ref_p);
594 /* TYPE_CANONICAL is re-computed during type merging, so no need
595 to stream it here. */
596 stream_write_tree (ob, TYPE_STUB_DECL (expr), ref_p);
599 /* Write all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
600 to output block OB. If REF_P is true, write a reference to EXPR's
604 write_ts_type_non_common_tree_pointers (struct output_block *ob, tree expr,
607 if (TREE_CODE (expr) == ENUMERAL_TYPE)
608 stream_write_tree (ob, TYPE_VALUES (expr), ref_p);
609 else if (TREE_CODE (expr) == ARRAY_TYPE)
610 stream_write_tree (ob, TYPE_DOMAIN (expr), ref_p);
611 else if (RECORD_OR_UNION_TYPE_P (expr))
612 stream_write_tree (ob, TYPE_FIELDS (expr), ref_p);
613 else if (TREE_CODE (expr) == FUNCTION_TYPE
614 || TREE_CODE (expr) == METHOD_TYPE)
615 stream_write_tree (ob, TYPE_ARG_TYPES (expr), ref_p);
617 if (!POINTER_TYPE_P (expr))
618 stream_write_tree (ob, TYPE_MINVAL (expr), ref_p);
619 stream_write_tree (ob, TYPE_MAXVAL (expr), ref_p);
620 if (RECORD_OR_UNION_TYPE_P (expr))
621 stream_write_tree (ob, TYPE_BINFO (expr), ref_p);
625 /* Write all pointer fields in the TS_LIST structure of EXPR to output
626 block OB. If REF_P is true, write a reference to EXPR's pointer
630 write_ts_list_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
632 stream_write_tree (ob, TREE_PURPOSE (expr), ref_p);
633 stream_write_tree (ob, TREE_VALUE (expr), ref_p);
634 streamer_write_chain (ob, TREE_CHAIN (expr), ref_p);
638 /* Write all pointer fields in the TS_VEC structure of EXPR to output
639 block OB. If REF_P is true, write a reference to EXPR's pointer
643 write_ts_vec_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
647 /* Note that the number of slots for EXPR has already been emitted
648 in EXPR's header (see streamer_write_tree_header). */
649 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
650 stream_write_tree (ob, TREE_VEC_ELT (expr, i), ref_p);
654 /* Write all pointer fields in the TS_EXP structure of EXPR to output
655 block OB. If REF_P is true, write a reference to EXPR's pointer
659 write_ts_exp_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
663 streamer_write_hwi (ob, TREE_OPERAND_LENGTH (expr));
664 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
665 stream_write_tree (ob, TREE_OPERAND (expr, i), ref_p);
666 lto_output_location (ob, EXPR_LOCATION (expr));
667 stream_write_tree (ob, TREE_BLOCK (expr), ref_p);
671 /* Write all pointer fields in the TS_BLOCK structure of EXPR to output
672 block OB. If REF_P is true, write a reference to EXPR's pointer
676 write_ts_block_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
678 /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information
679 for early inlining so drop it on the floor instead of ICEing in
681 streamer_write_chain (ob, BLOCK_VARS (expr), ref_p);
683 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
684 for early inlining so drop it on the floor instead of ICEing in
687 stream_write_tree (ob, BLOCK_SUPERCONTEXT (expr), ref_p);
688 /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information
689 for early inlining so drop it on the floor instead of ICEing in
691 stream_write_tree (ob, BLOCK_FRAGMENT_ORIGIN (expr), ref_p);
692 stream_write_tree (ob, BLOCK_FRAGMENT_CHAIN (expr), ref_p);
693 /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this
694 list is re-constructed from BLOCK_SUPERCONTEXT. */
698 /* Write all pointer fields in the TS_BINFO structure of EXPR to output
699 block OB. If REF_P is true, write a reference to EXPR's pointer
703 write_ts_binfo_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
708 /* Note that the number of BINFO slots has already been emitted in
709 EXPR's header (see streamer_write_tree_header) because this length
710 is needed to build the empty BINFO node on the reader side. */
711 FOR_EACH_VEC_ELT (tree, BINFO_BASE_BINFOS (expr), i, t)
712 stream_write_tree (ob, t, ref_p);
713 stream_write_tree (ob, NULL_TREE, false);
715 stream_write_tree (ob, BINFO_OFFSET (expr), ref_p);
716 stream_write_tree (ob, BINFO_VTABLE (expr), ref_p);
717 stream_write_tree (ob, BINFO_VPTR_FIELD (expr), ref_p);
719 streamer_write_uhwi (ob, VEC_length (tree, BINFO_BASE_ACCESSES (expr)));
720 FOR_EACH_VEC_ELT (tree, BINFO_BASE_ACCESSES (expr), i, t)
721 stream_write_tree (ob, t, ref_p);
723 stream_write_tree (ob, BINFO_INHERITANCE_CHAIN (expr), ref_p);
724 stream_write_tree (ob, BINFO_SUBVTT_INDEX (expr), ref_p);
725 stream_write_tree (ob, BINFO_VPTR_INDEX (expr), ref_p);
729 /* Write all pointer fields in the TS_CONSTRUCTOR structure of EXPR to
730 output block OB. If REF_P is true, write a reference to EXPR's
734 write_ts_constructor_tree_pointers (struct output_block *ob, tree expr,
740 streamer_write_uhwi (ob, CONSTRUCTOR_NELTS (expr));
741 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value)
743 stream_write_tree (ob, index, ref_p);
744 stream_write_tree (ob, value, ref_p);
748 /* Write a TS_TARGET_OPTION tree in EXPR to OB. */
751 write_ts_target_option (struct output_block *ob, tree expr)
753 struct cl_target_option *t = TREE_TARGET_OPTION (expr);
757 /* The cl_target_option is target specific and generated by the options
758 awk script, so we just recreate a byte-by-byte copy here. */
760 bp = bitpack_create (ob->main_stream);
761 len = sizeof (struct cl_target_option);
762 for (i = 0; i < len; i++)
763 bp_pack_value (&bp, ((unsigned char *)t)[i], 8);
764 /* Catch struct size mismatches between reader and writer. */
765 bp_pack_value (&bp, 0x12345678, 32);
766 streamer_write_bitpack (&bp);
769 /* Write a TS_TRANSLATION_UNIT_DECL tree in EXPR to OB. */
772 write_ts_translation_unit_decl_tree_pointers (struct output_block *ob,
775 streamer_write_string (ob, ob->main_stream,
776 TRANSLATION_UNIT_LANGUAGE (expr), true);
779 /* Write all pointer fields in EXPR to output block OB. If REF_P is true,
780 the leaves of EXPR are emitted as references. */
783 streamer_write_tree_body (struct output_block *ob, tree expr, bool ref_p)
787 code = TREE_CODE (expr);
789 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
790 write_ts_common_tree_pointers (ob, expr, ref_p);
792 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
793 write_ts_vector_tree_pointers (ob, expr, ref_p);
795 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
796 write_ts_complex_tree_pointers (ob, expr, ref_p);
798 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
799 write_ts_decl_minimal_tree_pointers (ob, expr, ref_p);
801 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
802 write_ts_decl_common_tree_pointers (ob, expr, ref_p);
804 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
805 write_ts_decl_non_common_tree_pointers (ob, expr, ref_p);
807 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
808 write_ts_decl_with_vis_tree_pointers (ob, expr, ref_p);
810 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
811 write_ts_field_decl_tree_pointers (ob, expr, ref_p);
813 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
814 write_ts_function_decl_tree_pointers (ob, expr, ref_p);
816 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
817 write_ts_type_common_tree_pointers (ob, expr, ref_p);
819 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
820 write_ts_type_non_common_tree_pointers (ob, expr, ref_p);
822 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
823 write_ts_list_tree_pointers (ob, expr, ref_p);
825 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
826 write_ts_vec_tree_pointers (ob, expr, ref_p);
828 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
829 write_ts_exp_tree_pointers (ob, expr, ref_p);
831 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
832 write_ts_block_tree_pointers (ob, expr, ref_p);
834 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
835 write_ts_binfo_tree_pointers (ob, expr, ref_p);
837 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
838 write_ts_constructor_tree_pointers (ob, expr, ref_p);
840 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
841 write_ts_target_option (ob, expr);
843 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
844 write_ts_translation_unit_decl_tree_pointers (ob, expr);
848 /* Emit header information for tree EXPR to output block OB. The header
849 contains everything needed to instantiate an empty skeleton for
850 EXPR on the reading side. IX is the index into the streamer cache
851 where EXPR is stored. */
854 streamer_write_tree_header (struct output_block *ob, tree expr)
859 /* We should not see any tree nodes not handled by the streamer. */
860 code = TREE_CODE (expr);
862 /* The header of a tree node consists of its tag, the size of
863 the node, and any other information needed to instantiate
864 EXPR on the reading side (such as the number of slots in
865 variable sized nodes). */
866 tag = lto_tree_code_to_tag (code);
867 streamer_write_record_start (ob, tag);
869 /* The following will cause bootstrap miscomparisons. Enable with care. */
870 #ifdef LTO_STREAMER_DEBUG
871 /* This is used mainly for debugging purposes. When the reader
872 and the writer do not agree on a streamed node, the pointer
873 value for EXPR can be used to track down the differences in
875 gcc_assert ((HOST_WIDEST_INT) (intptr_t) expr == (intptr_t) expr);
876 streamer_write_hwi (ob, (HOST_WIDEST_INT) (intptr_t) expr);
879 /* The text in strings and identifiers are completely emitted in
881 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
882 streamer_write_string_cst (ob, ob->main_stream, expr);
883 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
884 write_identifier (ob, ob->main_stream, expr);
885 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
886 streamer_write_hwi (ob, TREE_VEC_LENGTH (expr));
887 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
888 streamer_write_uhwi (ob, BINFO_N_BASE_BINFOS (expr));
889 else if (TREE_CODE (expr) == CALL_EXPR)
890 streamer_write_uhwi (ob, call_expr_nargs (expr));
894 /* Emit the integer constant CST to output block OB. If REF_P is true,
895 CST's type will be emitted as a reference. */
898 streamer_write_integer_cst (struct output_block *ob, tree cst, bool ref_p)
900 streamer_write_record_start (ob, lto_tree_code_to_tag (INTEGER_CST));
901 stream_write_tree (ob, TREE_TYPE (cst), ref_p);
902 streamer_write_char_stream (ob->main_stream, TREE_OVERFLOW_P (cst));
903 streamer_write_uhwi (ob, TREE_INT_CST_LOW (cst));
904 streamer_write_uhwi (ob, TREE_INT_CST_HIGH (cst));