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 if (VAR_OR_FUNCTION_DECL_P (t)
414 && DECL_EXTERNAL (t))
415 stream_write_tree_shallow_non_ref (ob, t, ref_p);
417 stream_write_tree (ob, t, ref_p);
419 TREE_CHAIN (t) = saved_chain;
425 /* Write all pointer fields in the TS_COMMON structure of EXPR to output
426 block OB. If REF_P is true, write a reference to EXPR's pointer
430 write_ts_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
432 if (TREE_CODE (expr) != IDENTIFIER_NODE)
433 stream_write_tree (ob, TREE_TYPE (expr), ref_p);
437 /* Write all pointer fields in the TS_VECTOR structure of EXPR to output
438 block OB. If REF_P is true, write a reference to EXPR's pointer
442 write_ts_vector_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
444 streamer_write_chain (ob, TREE_VECTOR_CST_ELTS (expr), ref_p);
448 /* Write all pointer fields in the TS_COMPLEX structure of EXPR to output
449 block OB. If REF_P is true, write a reference to EXPR's pointer
453 write_ts_complex_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
455 stream_write_tree (ob, TREE_REALPART (expr), ref_p);
456 stream_write_tree (ob, TREE_IMAGPART (expr), ref_p);
460 /* Write all pointer fields in the TS_DECL_MINIMAL structure of EXPR
461 to output block OB. If REF_P is true, write a reference to EXPR's
465 write_ts_decl_minimal_tree_pointers (struct output_block *ob, tree expr,
468 stream_write_tree (ob, DECL_NAME (expr), ref_p);
469 stream_write_tree (ob, DECL_CONTEXT (expr), ref_p);
470 lto_output_location (ob, DECL_SOURCE_LOCATION (expr));
474 /* Write all pointer fields in the TS_DECL_COMMON structure of EXPR to
475 output block OB. If REF_P is true, write a reference to EXPR's
479 write_ts_decl_common_tree_pointers (struct output_block *ob, tree expr,
482 stream_write_tree (ob, DECL_SIZE (expr), ref_p);
483 stream_write_tree (ob, DECL_SIZE_UNIT (expr), ref_p);
485 /* Note, DECL_INITIAL is not handled here. Since DECL_INITIAL needs
486 special handling in LTO, it must be handled by streamer hooks. */
488 stream_write_tree (ob, DECL_ATTRIBUTES (expr), ref_p);
490 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
491 for early inlining so drop it on the floor instead of ICEing in
494 if (TREE_CODE (expr) == PARM_DECL)
495 streamer_write_chain (ob, TREE_CHAIN (expr), ref_p);
497 if ((TREE_CODE (expr) == VAR_DECL
498 || TREE_CODE (expr) == PARM_DECL)
499 && DECL_HAS_VALUE_EXPR_P (expr))
500 stream_write_tree (ob, DECL_VALUE_EXPR (expr), ref_p);
502 if (TREE_CODE (expr) == VAR_DECL)
503 stream_write_tree (ob, DECL_DEBUG_EXPR (expr), ref_p);
507 /* Write all pointer fields in the TS_DECL_NON_COMMON structure of
508 EXPR to output block OB. If REF_P is true, write a reference to EXPR's
512 write_ts_decl_non_common_tree_pointers (struct output_block *ob, tree expr,
515 if (TREE_CODE (expr) == FUNCTION_DECL)
517 stream_write_tree (ob, DECL_ARGUMENTS (expr), ref_p);
518 stream_write_tree (ob, DECL_RESULT (expr), ref_p);
520 else if (TREE_CODE (expr) == TYPE_DECL)
521 stream_write_tree (ob, DECL_ORIGINAL_TYPE (expr), ref_p);
522 stream_write_tree (ob, DECL_VINDEX (expr), ref_p);
526 /* Write all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
527 to output block OB. If REF_P is true, write a reference to EXPR's
531 write_ts_decl_with_vis_tree_pointers (struct output_block *ob, tree expr,
534 /* Make sure we don't inadvertently set the assembler name. */
535 if (DECL_ASSEMBLER_NAME_SET_P (expr))
536 stream_write_tree (ob, DECL_ASSEMBLER_NAME (expr), ref_p);
538 stream_write_tree (ob, NULL_TREE, false);
540 stream_write_tree (ob, DECL_SECTION_NAME (expr), ref_p);
541 stream_write_tree (ob, DECL_COMDAT_GROUP (expr), ref_p);
545 /* Write all pointer fields in the TS_FIELD_DECL structure of EXPR to
546 output block OB. If REF_P is true, write a reference to EXPR's
550 write_ts_field_decl_tree_pointers (struct output_block *ob, tree expr,
553 stream_write_tree (ob, DECL_FIELD_OFFSET (expr), ref_p);
554 stream_write_tree (ob, DECL_BIT_FIELD_TYPE (expr), ref_p);
555 stream_write_tree (ob, DECL_QUALIFIER (expr), ref_p);
556 stream_write_tree (ob, DECL_FIELD_BIT_OFFSET (expr), ref_p);
557 stream_write_tree (ob, DECL_FCONTEXT (expr), ref_p);
561 /* Write all pointer fields in the TS_FUNCTION_DECL structure of EXPR
562 to output block OB. If REF_P is true, write a reference to EXPR's
566 write_ts_function_decl_tree_pointers (struct output_block *ob, tree expr,
569 /* DECL_STRUCT_FUNCTION is handled by lto_output_function. FIXME lto,
570 maybe it should be handled here? */
571 stream_write_tree (ob, DECL_FUNCTION_PERSONALITY (expr), ref_p);
572 stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p);
573 stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr), ref_p);
577 /* Write all pointer fields in the TS_TYPE_COMMON structure of EXPR to
578 output block OB. If REF_P is true, write a reference to EXPR's
582 write_ts_type_common_tree_pointers (struct output_block *ob, tree expr,
585 stream_write_tree (ob, TYPE_SIZE (expr), ref_p);
586 stream_write_tree (ob, TYPE_SIZE_UNIT (expr), ref_p);
587 stream_write_tree (ob, TYPE_ATTRIBUTES (expr), ref_p);
588 stream_write_tree (ob, TYPE_NAME (expr), ref_p);
589 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
590 reconstructed during fixup. */
591 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
593 stream_write_tree (ob, TYPE_MAIN_VARIANT (expr), ref_p);
594 stream_write_tree (ob, TYPE_CONTEXT (expr), ref_p);
595 /* TYPE_CANONICAL is re-computed during type merging, so no need
596 to stream it here. */
597 stream_write_tree (ob, TYPE_STUB_DECL (expr), ref_p);
600 /* Write all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
601 to output block OB. If REF_P is true, write a reference to EXPR's
605 write_ts_type_non_common_tree_pointers (struct output_block *ob, tree expr,
608 if (TREE_CODE (expr) == ENUMERAL_TYPE)
609 stream_write_tree (ob, TYPE_VALUES (expr), ref_p);
610 else if (TREE_CODE (expr) == ARRAY_TYPE)
611 stream_write_tree (ob, TYPE_DOMAIN (expr), ref_p);
612 else if (RECORD_OR_UNION_TYPE_P (expr))
613 streamer_write_chain (ob, TYPE_FIELDS (expr), ref_p);
614 else if (TREE_CODE (expr) == FUNCTION_TYPE
615 || TREE_CODE (expr) == METHOD_TYPE)
616 stream_write_tree (ob, TYPE_ARG_TYPES (expr), ref_p);
618 if (!POINTER_TYPE_P (expr))
619 stream_write_tree (ob, TYPE_MINVAL (expr), ref_p);
620 stream_write_tree (ob, TYPE_MAXVAL (expr), ref_p);
621 if (RECORD_OR_UNION_TYPE_P (expr))
622 stream_write_tree (ob, TYPE_BINFO (expr), ref_p);
626 /* Write all pointer fields in the TS_LIST structure of EXPR to output
627 block OB. If REF_P is true, write a reference to EXPR's pointer
631 write_ts_list_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
633 stream_write_tree (ob, TREE_PURPOSE (expr), ref_p);
634 stream_write_tree (ob, TREE_VALUE (expr), ref_p);
635 streamer_write_chain (ob, TREE_CHAIN (expr), ref_p);
639 /* Write all pointer fields in the TS_VEC structure of EXPR to output
640 block OB. If REF_P is true, write a reference to EXPR's pointer
644 write_ts_vec_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
648 /* Note that the number of slots for EXPR has already been emitted
649 in EXPR's header (see streamer_write_tree_header). */
650 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
651 stream_write_tree (ob, TREE_VEC_ELT (expr, i), ref_p);
655 /* Write all pointer fields in the TS_EXP structure of EXPR to output
656 block OB. If REF_P is true, write a reference to EXPR's pointer
660 write_ts_exp_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
664 streamer_write_hwi (ob, TREE_OPERAND_LENGTH (expr));
665 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
666 stream_write_tree (ob, TREE_OPERAND (expr, i), ref_p);
667 lto_output_location (ob, EXPR_LOCATION (expr));
668 stream_write_tree (ob, TREE_BLOCK (expr), ref_p);
672 /* Write all pointer fields in the TS_BLOCK structure of EXPR to output
673 block OB. If REF_P is true, write a reference to EXPR's pointer
677 write_ts_block_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
679 /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information
680 for early inlining so drop it on the floor instead of ICEing in
682 streamer_write_chain (ob, BLOCK_VARS (expr), ref_p);
684 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
685 for early inlining so drop it on the floor instead of ICEing in
688 stream_write_tree (ob, BLOCK_SUPERCONTEXT (expr), ref_p);
689 /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information
690 for early inlining so drop it on the floor instead of ICEing in
692 stream_write_tree (ob, BLOCK_FRAGMENT_ORIGIN (expr), ref_p);
693 stream_write_tree (ob, BLOCK_FRAGMENT_CHAIN (expr), ref_p);
694 /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this
695 list is re-constructed from BLOCK_SUPERCONTEXT. */
699 /* Write all pointer fields in the TS_BINFO structure of EXPR to output
700 block OB. If REF_P is true, write a reference to EXPR's pointer
704 write_ts_binfo_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
709 /* Note that the number of BINFO slots has already been emitted in
710 EXPR's header (see streamer_write_tree_header) because this length
711 is needed to build the empty BINFO node on the reader side. */
712 FOR_EACH_VEC_ELT (tree, BINFO_BASE_BINFOS (expr), i, t)
713 stream_write_tree (ob, t, ref_p);
714 stream_write_tree (ob, NULL_TREE, false);
716 stream_write_tree (ob, BINFO_OFFSET (expr), ref_p);
717 stream_write_tree (ob, BINFO_VTABLE (expr), ref_p);
718 stream_write_tree (ob, BINFO_VPTR_FIELD (expr), ref_p);
720 streamer_write_uhwi (ob, VEC_length (tree, BINFO_BASE_ACCESSES (expr)));
721 FOR_EACH_VEC_ELT (tree, BINFO_BASE_ACCESSES (expr), i, t)
722 stream_write_tree (ob, t, ref_p);
724 stream_write_tree (ob, BINFO_INHERITANCE_CHAIN (expr), ref_p);
725 stream_write_tree (ob, BINFO_SUBVTT_INDEX (expr), ref_p);
726 stream_write_tree (ob, BINFO_VPTR_INDEX (expr), ref_p);
730 /* Write all pointer fields in the TS_CONSTRUCTOR structure of EXPR to
731 output block OB. If REF_P is true, write a reference to EXPR's
735 write_ts_constructor_tree_pointers (struct output_block *ob, tree expr,
741 streamer_write_uhwi (ob, CONSTRUCTOR_NELTS (expr));
742 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value)
744 stream_write_tree (ob, index, ref_p);
745 stream_write_tree (ob, value, ref_p);
749 /* Write a TS_TARGET_OPTION tree in EXPR to OB. */
752 write_ts_target_option (struct output_block *ob, tree expr)
754 struct cl_target_option *t = TREE_TARGET_OPTION (expr);
758 /* The cl_target_option is target specific and generated by the options
759 awk script, so we just recreate a byte-by-byte copy here. */
761 bp = bitpack_create (ob->main_stream);
762 len = sizeof (struct cl_target_option);
763 for (i = 0; i < len; i++)
764 bp_pack_value (&bp, ((unsigned char *)t)[i], 8);
765 /* Catch struct size mismatches between reader and writer. */
766 bp_pack_value (&bp, 0x12345678, 32);
767 streamer_write_bitpack (&bp);
770 /* Write a TS_OPTIMIZATION tree in EXPR to OB. */
773 write_ts_optimization (struct output_block *ob, tree expr)
775 struct cl_optimization *t = TREE_OPTIMIZATION (expr);
779 /* The cl_optimization is generated by the options
780 awk script, so we just recreate a byte-by-byte copy here. */
782 bp = bitpack_create (ob->main_stream);
783 len = sizeof (struct cl_optimization);
784 for (i = 0; i < len; i++)
785 bp_pack_value (&bp, ((unsigned char *)t)[i], 8);
786 /* Catch struct size mismatches between reader and writer. */
787 bp_pack_value (&bp, 0x12345678, 32);
788 streamer_write_bitpack (&bp);
791 /* Write a TS_TRANSLATION_UNIT_DECL tree in EXPR to OB. */
794 write_ts_translation_unit_decl_tree_pointers (struct output_block *ob,
797 streamer_write_string (ob, ob->main_stream,
798 TRANSLATION_UNIT_LANGUAGE (expr), true);
801 /* Write all pointer fields in EXPR to output block OB. If REF_P is true,
802 the leaves of EXPR are emitted as references. */
805 streamer_write_tree_body (struct output_block *ob, tree expr, bool ref_p)
809 code = TREE_CODE (expr);
811 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
812 write_ts_common_tree_pointers (ob, expr, ref_p);
814 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
815 write_ts_vector_tree_pointers (ob, expr, ref_p);
817 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
818 write_ts_complex_tree_pointers (ob, expr, ref_p);
820 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
821 write_ts_decl_minimal_tree_pointers (ob, expr, ref_p);
823 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
824 write_ts_decl_common_tree_pointers (ob, expr, ref_p);
826 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
827 write_ts_decl_non_common_tree_pointers (ob, expr, ref_p);
829 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
830 write_ts_decl_with_vis_tree_pointers (ob, expr, ref_p);
832 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
833 write_ts_field_decl_tree_pointers (ob, expr, ref_p);
835 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
836 write_ts_function_decl_tree_pointers (ob, expr, ref_p);
838 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
839 write_ts_type_common_tree_pointers (ob, expr, ref_p);
841 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
842 write_ts_type_non_common_tree_pointers (ob, expr, ref_p);
844 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
845 write_ts_list_tree_pointers (ob, expr, ref_p);
847 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
848 write_ts_vec_tree_pointers (ob, expr, ref_p);
850 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
851 write_ts_exp_tree_pointers (ob, expr, ref_p);
853 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
854 write_ts_block_tree_pointers (ob, expr, ref_p);
856 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
857 write_ts_binfo_tree_pointers (ob, expr, ref_p);
859 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
860 write_ts_constructor_tree_pointers (ob, expr, ref_p);
862 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
863 write_ts_target_option (ob, expr);
865 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
866 write_ts_optimization (ob, expr);
868 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
869 write_ts_translation_unit_decl_tree_pointers (ob, expr);
873 /* Emit header information for tree EXPR to output block OB. The header
874 contains everything needed to instantiate an empty skeleton for
875 EXPR on the reading side. IX is the index into the streamer cache
876 where EXPR is stored. */
879 streamer_write_tree_header (struct output_block *ob, tree expr)
884 /* We should not see any tree nodes not handled by the streamer. */
885 code = TREE_CODE (expr);
887 /* The header of a tree node consists of its tag, the size of
888 the node, and any other information needed to instantiate
889 EXPR on the reading side (such as the number of slots in
890 variable sized nodes). */
891 tag = lto_tree_code_to_tag (code);
892 streamer_write_record_start (ob, tag);
894 /* The following will cause bootstrap miscomparisons. Enable with care. */
895 #ifdef LTO_STREAMER_DEBUG
896 /* This is used mainly for debugging purposes. When the reader
897 and the writer do not agree on a streamed node, the pointer
898 value for EXPR can be used to track down the differences in
900 gcc_assert ((HOST_WIDEST_INT) (intptr_t) expr == (intptr_t) expr);
901 streamer_write_hwi (ob, (HOST_WIDEST_INT) (intptr_t) expr);
904 /* The text in strings and identifiers are completely emitted in
906 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
907 streamer_write_string_cst (ob, ob->main_stream, expr);
908 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
909 write_identifier (ob, ob->main_stream, expr);
910 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
911 streamer_write_hwi (ob, TREE_VEC_LENGTH (expr));
912 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
913 streamer_write_uhwi (ob, BINFO_N_BASE_BINFOS (expr));
914 else if (TREE_CODE (expr) == CALL_EXPR)
915 streamer_write_uhwi (ob, call_expr_nargs (expr));
919 /* Emit the integer constant CST to output block OB. If REF_P is true,
920 CST's type will be emitted as a reference. */
923 streamer_write_integer_cst (struct output_block *ob, tree cst, bool ref_p)
925 streamer_write_record_start (ob, lto_tree_code_to_tag (INTEGER_CST));
926 stream_write_tree (ob, TREE_TYPE (cst), ref_p);
927 streamer_write_char_stream (ob->main_stream, TREE_OVERFLOW_P (cst));
928 streamer_write_uhwi (ob, TREE_INT_CST_LOW (cst));
929 streamer_write_uhwi (ob, TREE_INT_CST_HIGH (cst));