2018-05-07 Edward Smith-Rowland <3dw4rd@verizon.net>
[official-gcc.git] / gcc / tree-streamer-out.c
blob03145b4cf58b332cb0a78d8ed742c1b488d31b40
1 /* Routines for emitting trees to a file stream.
3 Copyright (C) 2011-2018 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
11 version.
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
16 for more details.
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/>. */
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "backend.h"
26 #include "target.h"
27 #include "tree.h"
28 #include "gimple.h"
29 #include "tree-streamer.h"
30 #include "cgraph.h"
31 #include "alias.h"
32 #include "stor-layout.h"
33 #include "gomp-constants.h"
36 /* Output the STRING constant to the string
37 table in OB. Then put the index onto the INDEX_STREAM. */
39 void
40 streamer_write_string_cst (struct output_block *ob,
41 struct lto_output_stream *index_stream,
42 tree string)
44 streamer_write_string_with_length (ob, index_stream,
45 string ? TREE_STRING_POINTER (string)
46 : NULL,
47 string ? TREE_STRING_LENGTH (string) : 0,
48 true);
52 /* Output the identifier ID to the string
53 table in OB. Then put the index onto the INDEX_STREAM. */
55 static void
56 write_identifier (struct output_block *ob,
57 struct lto_output_stream *index_stream,
58 tree id)
60 streamer_write_string_with_length (ob, index_stream,
61 IDENTIFIER_POINTER (id),
62 IDENTIFIER_LENGTH (id),
63 true);
67 /* Pack all the non-pointer fields of the TS_BASE structure of
68 expression EXPR into bitpack BP. */
70 static inline void
71 pack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
73 bp_pack_value (bp, TREE_CODE (expr), 16);
74 if (!TYPE_P (expr))
76 bp_pack_value (bp, TREE_SIDE_EFFECTS (expr), 1);
77 bp_pack_value (bp, TREE_CONSTANT (expr), 1);
78 bp_pack_value (bp, TREE_READONLY (expr), 1);
80 /* TREE_PUBLIC is used on types to indicate that the type
81 has a TYPE_CACHED_VALUES vector. This is not streamed out,
82 so we skip it here. */
83 bp_pack_value (bp, TREE_PUBLIC (expr), 1);
85 else
86 bp_pack_value (bp, 0, 4);
87 bp_pack_value (bp, TREE_ADDRESSABLE (expr), 1);
88 bp_pack_value (bp, TREE_THIS_VOLATILE (expr), 1);
89 if (DECL_P (expr))
91 bp_pack_value (bp, DECL_UNSIGNED (expr), 1);
92 bp_pack_value (bp, DECL_NAMELESS (expr), 1);
94 else if (TYPE_P (expr))
95 bp_pack_value (bp, TYPE_UNSIGNED (expr), 1);
96 else
97 bp_pack_value (bp, 0, 1);
98 /* We write debug info two times, do not confuse the second one.
99 The only relevant TREE_ASM_WRITTEN use is on SSA names. */
100 bp_pack_value (bp, (TREE_CODE (expr) != SSA_NAME
101 ? 0 : TREE_ASM_WRITTEN (expr)), 1);
102 if (TYPE_P (expr))
103 bp_pack_value (bp, TYPE_ARTIFICIAL (expr), 1);
104 else
105 bp_pack_value (bp, TREE_NO_WARNING (expr), 1);
106 bp_pack_value (bp, TREE_NOTHROW (expr), 1);
107 bp_pack_value (bp, TREE_STATIC (expr), 1);
108 if (TREE_CODE (expr) != TREE_BINFO)
109 bp_pack_value (bp, TREE_PRIVATE (expr), 1);
110 else
111 bp_pack_value (bp, 0, 1);
112 bp_pack_value (bp, TREE_PROTECTED (expr), 1);
113 bp_pack_value (bp, TREE_DEPRECATED (expr), 1);
114 if (TYPE_P (expr))
116 if (AGGREGATE_TYPE_P (expr))
117 bp_pack_value (bp, TYPE_REVERSE_STORAGE_ORDER (expr), 1);
118 else
119 bp_pack_value (bp, TYPE_SATURATING (expr), 1);
120 bp_pack_value (bp, TYPE_ADDR_SPACE (expr), 8);
122 else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
124 bp_pack_value (bp, REF_REVERSE_STORAGE_ORDER (expr), 1);
125 bp_pack_value (bp, 0, 8);
127 else if (TREE_CODE (expr) == SSA_NAME)
129 bp_pack_value (bp, SSA_NAME_IS_DEFAULT_DEF (expr), 1);
130 bp_pack_value (bp, 0, 8);
132 else
133 bp_pack_value (bp, 0, 9);
137 /* Pack all the non-pointer fields of the TS_INTEGER_CST structure of
138 expression EXPR into bitpack BP. */
140 static void
141 pack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
143 int i;
144 /* Note that the number of elements has already been written out in
145 streamer_write_tree_header. */
146 for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
147 bp_pack_var_len_int (bp, TREE_INT_CST_ELT (expr, i));
151 /* Pack all the non-pointer fields of the TS_REAL_CST structure of
152 expression EXPR into bitpack BP. */
154 static void
155 pack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
157 unsigned i;
158 REAL_VALUE_TYPE r;
160 r = TREE_REAL_CST (expr);
161 bp_pack_value (bp, r.cl, 2);
162 bp_pack_value (bp, r.decimal, 1);
163 bp_pack_value (bp, r.sign, 1);
164 bp_pack_value (bp, r.signalling, 1);
165 bp_pack_value (bp, r.canonical, 1);
166 bp_pack_value (bp, r.uexp, EXP_BITS);
167 for (i = 0; i < SIGSZ; i++)
168 bp_pack_value (bp, r.sig[i], HOST_BITS_PER_LONG);
172 /* Pack all the non-pointer fields of the TS_FIXED_CST structure of
173 expression EXPR into bitpack BP. */
175 static void
176 pack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
178 struct fixed_value fv = TREE_FIXED_CST (expr);
179 bp_pack_machine_mode (bp, fv.mode);
180 bp_pack_var_len_int (bp, fv.data.low);
181 bp_pack_var_len_int (bp, fv.data.high);
184 /* Pack all the non-pointer fields of the TS_DECL_COMMON structure
185 of expression EXPR into bitpack BP. */
187 static void
188 pack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
190 bp_pack_machine_mode (bp, DECL_MODE (expr));
191 bp_pack_value (bp, DECL_NONLOCAL (expr), 1);
192 bp_pack_value (bp, DECL_VIRTUAL_P (expr), 1);
193 bp_pack_value (bp, DECL_IGNORED_P (expr), 1);
194 bp_pack_value (bp, DECL_ABSTRACT_P (expr), 1);
195 bp_pack_value (bp, DECL_ARTIFICIAL (expr), 1);
196 bp_pack_value (bp, DECL_USER_ALIGN (expr), 1);
197 bp_pack_value (bp, DECL_PRESERVE_P (expr), 1);
198 bp_pack_value (bp, DECL_EXTERNAL (expr), 1);
199 bp_pack_value (bp, DECL_GIMPLE_REG_P (expr), 1);
200 bp_pack_var_len_unsigned (bp, DECL_ALIGN (expr));
202 if (TREE_CODE (expr) == LABEL_DECL)
204 /* Note that we do not write LABEL_DECL_UID. The reader will
205 always assume an initial value of -1 so that the
206 label_to_block_map is recreated by gimple_set_bb. */
207 bp_pack_var_len_unsigned (bp, EH_LANDING_PAD_NR (expr));
210 if (TREE_CODE (expr) == FIELD_DECL)
212 bp_pack_value (bp, DECL_PACKED (expr), 1);
213 bp_pack_value (bp, DECL_NONADDRESSABLE_P (expr), 1);
214 bp_pack_value (bp, DECL_PADDING_P (expr), 1);
215 bp_pack_value (bp, expr->decl_common.off_align, 8);
218 if (VAR_P (expr))
220 bp_pack_value (bp, DECL_HAS_DEBUG_EXPR_P (expr), 1);
221 bp_pack_value (bp, DECL_NONLOCAL_FRAME (expr), 1);
224 if (TREE_CODE (expr) == RESULT_DECL
225 || TREE_CODE (expr) == PARM_DECL
226 || VAR_P (expr))
228 bp_pack_value (bp, DECL_BY_REFERENCE (expr), 1);
229 if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
230 bp_pack_value (bp, DECL_HAS_VALUE_EXPR_P (expr), 1);
235 /* Pack all the non-pointer fields of the TS_DECL_WRTL structure
236 of expression EXPR into bitpack BP. */
238 static void
239 pack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
241 bp_pack_value (bp, DECL_REGISTER (expr), 1);
245 /* Pack all the non-pointer fields of the TS_DECL_WITH_VIS structure
246 of expression EXPR into bitpack BP. */
248 static void
249 pack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
251 bp_pack_value (bp, DECL_COMMON (expr), 1);
252 bp_pack_value (bp, DECL_DLLIMPORT_P (expr), 1);
253 bp_pack_value (bp, DECL_WEAK (expr), 1);
254 bp_pack_value (bp, DECL_SEEN_IN_BIND_EXPR_P (expr), 1);
255 bp_pack_value (bp, DECL_COMDAT (expr), 1);
256 bp_pack_value (bp, DECL_VISIBILITY (expr), 2);
257 bp_pack_value (bp, DECL_VISIBILITY_SPECIFIED (expr), 1);
259 if (VAR_P (expr))
261 bp_pack_value (bp, DECL_HARD_REGISTER (expr), 1);
262 /* DECL_IN_TEXT_SECTION is set during final asm output only. */
263 bp_pack_value (bp, DECL_IN_CONSTANT_POOL (expr), 1);
266 if (TREE_CODE (expr) == FUNCTION_DECL)
268 bp_pack_value (bp, DECL_FINAL_P (expr), 1);
269 bp_pack_value (bp, DECL_CXX_CONSTRUCTOR_P (expr), 1);
270 bp_pack_value (bp, DECL_CXX_DESTRUCTOR_P (expr), 1);
275 /* Pack all the non-pointer fields of the TS_FUNCTION_DECL structure
276 of expression EXPR into bitpack BP. */
278 static void
279 pack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
281 bp_pack_enum (bp, built_in_class, BUILT_IN_LAST,
282 DECL_BUILT_IN_CLASS (expr));
283 bp_pack_value (bp, DECL_STATIC_CONSTRUCTOR (expr), 1);
284 bp_pack_value (bp, DECL_STATIC_DESTRUCTOR (expr), 1);
285 bp_pack_value (bp, DECL_UNINLINABLE (expr), 1);
286 bp_pack_value (bp, DECL_POSSIBLY_INLINED (expr), 1);
287 bp_pack_value (bp, DECL_IS_NOVOPS (expr), 1);
288 bp_pack_value (bp, DECL_IS_RETURNS_TWICE (expr), 1);
289 bp_pack_value (bp, DECL_IS_MALLOC (expr), 1);
290 bp_pack_value (bp, DECL_IS_OPERATOR_NEW (expr), 1);
291 bp_pack_value (bp, DECL_DECLARED_INLINE_P (expr), 1);
292 bp_pack_value (bp, DECL_STATIC_CHAIN (expr), 1);
293 bp_pack_value (bp, DECL_NO_INLINE_WARNING_P (expr), 1);
294 bp_pack_value (bp, DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr), 1);
295 bp_pack_value (bp, DECL_NO_LIMIT_STACK (expr), 1);
296 bp_pack_value (bp, DECL_DISREGARD_INLINE_LIMITS (expr), 1);
297 bp_pack_value (bp, DECL_PURE_P (expr), 1);
298 bp_pack_value (bp, DECL_LOOPING_CONST_OR_PURE_P (expr), 1);
299 if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
300 bp_pack_value (bp, DECL_FUNCTION_CODE (expr), 12);
304 /* Pack all the non-pointer fields of the TS_TYPE_COMMON structure
305 of expression EXPR into bitpack BP. */
307 static void
308 pack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
310 /* for VECTOR_TYPE, TYPE_MODE reevaluates the mode using target_flags
311 not necessary valid in a global context.
312 Use the raw value previously set by layout_type. */
313 bp_pack_machine_mode (bp, TYPE_MODE_RAW (expr));
314 bp_pack_value (bp, TYPE_STRING_FLAG (expr), 1);
315 /* TYPE_NO_FORCE_BLK is private to stor-layout and need
316 no streaming. */
317 bp_pack_value (bp, TYPE_NEEDS_CONSTRUCTING (expr), 1);
318 bp_pack_value (bp, TYPE_PACKED (expr), 1);
319 bp_pack_value (bp, TYPE_RESTRICT (expr), 1);
320 bp_pack_value (bp, TYPE_USER_ALIGN (expr), 1);
321 bp_pack_value (bp, TYPE_READONLY (expr), 1);
322 /* We used to stream TYPE_ALIAS_SET == 0 information to let frontends mark
323 types that are opaque for TBAA. This however did not work as intended,
324 because TYPE_ALIAS_SET == 0 was regularly lost in type merging. */
325 if (RECORD_OR_UNION_TYPE_P (expr))
327 bp_pack_value (bp, TYPE_TRANSPARENT_AGGR (expr), 1);
328 bp_pack_value (bp, TYPE_FINAL_P (expr), 1);
330 else if (TREE_CODE (expr) == ARRAY_TYPE)
331 bp_pack_value (bp, TYPE_NONALIASED_COMPONENT (expr), 1);
332 if (AGGREGATE_TYPE_P (expr))
333 bp_pack_value (bp, TYPE_TYPELESS_STORAGE (expr), 1);
334 bp_pack_value (bp, TYPE_EMPTY_P (expr), 1);
335 bp_pack_var_len_unsigned (bp, TYPE_PRECISION (expr));
336 bp_pack_var_len_unsigned (bp, TYPE_ALIGN (expr));
340 /* Pack all the non-pointer fields of the TS_BLOCK structure
341 of expression EXPR into bitpack BP. */
343 static void
344 pack_ts_block_value_fields (struct output_block *ob,
345 struct bitpack_d *bp, tree expr)
347 bp_pack_value (bp, BLOCK_ABSTRACT (expr), 1);
348 /* BLOCK_NUMBER is recomputed. */
349 /* Stream BLOCK_SOURCE_LOCATION for the limited cases we can handle - those
350 that represent inlined function scopes.
351 For the rest them on the floor instead of ICEing in dwarf2out.c. */
352 if (inlined_function_outer_scope_p (expr))
353 stream_output_location (ob, bp, BLOCK_SOURCE_LOCATION (expr));
354 else
355 stream_output_location (ob, bp, UNKNOWN_LOCATION);
358 /* Pack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL structure
359 of expression EXPR into bitpack BP. */
361 static void
362 pack_ts_translation_unit_decl_value_fields (struct output_block *ob,
363 struct bitpack_d *bp, tree expr)
365 bp_pack_string (ob, bp, TRANSLATION_UNIT_LANGUAGE (expr), true);
369 /* Pack all the non-pointer fields of the TS_OMP_CLAUSE structure
370 of expression EXPR into bitpack BP. */
372 static void
373 pack_ts_omp_clause_value_fields (struct output_block *ob,
374 struct bitpack_d *bp, tree expr)
376 stream_output_location (ob, bp, OMP_CLAUSE_LOCATION (expr));
377 switch (OMP_CLAUSE_CODE (expr))
379 case OMP_CLAUSE_DEFAULT:
380 bp_pack_enum (bp, omp_clause_default_kind, OMP_CLAUSE_DEFAULT_LAST,
381 OMP_CLAUSE_DEFAULT_KIND (expr));
382 break;
383 case OMP_CLAUSE_SCHEDULE:
384 bp_pack_enum (bp, omp_clause_schedule_kind, OMP_CLAUSE_SCHEDULE_LAST,
385 OMP_CLAUSE_SCHEDULE_KIND (expr));
386 break;
387 case OMP_CLAUSE_DEPEND:
388 bp_pack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST,
389 OMP_CLAUSE_DEPEND_KIND (expr));
390 break;
391 case OMP_CLAUSE_MAP:
392 bp_pack_enum (bp, gomp_map_kind, GOMP_MAP_LAST,
393 OMP_CLAUSE_MAP_KIND (expr));
394 break;
395 case OMP_CLAUSE_PROC_BIND:
396 bp_pack_enum (bp, omp_clause_proc_bind_kind, OMP_CLAUSE_PROC_BIND_LAST,
397 OMP_CLAUSE_PROC_BIND_KIND (expr));
398 break;
399 case OMP_CLAUSE_REDUCTION:
400 bp_pack_enum (bp, tree_code, MAX_TREE_CODES,
401 OMP_CLAUSE_REDUCTION_CODE (expr));
402 break;
403 default:
404 break;
409 /* Pack all the bitfields in EXPR into a bit pack. */
411 void
412 streamer_write_tree_bitfields (struct output_block *ob, tree expr)
414 bitpack_d bp = bitpack_create (ob->main_stream);
415 enum tree_code code;
417 code = TREE_CODE (expr);
419 /* Note that all these functions are highly sensitive to changes in
420 the types and sizes of each of the fields being packed. */
421 pack_ts_base_value_fields (&bp, expr);
423 if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
424 pack_ts_int_cst_value_fields (&bp, expr);
426 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
427 pack_ts_real_cst_value_fields (&bp, expr);
429 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
430 pack_ts_fixed_cst_value_fields (&bp, expr);
432 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
433 stream_output_location (ob, &bp, DECL_SOURCE_LOCATION (expr));
435 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
436 pack_ts_decl_common_value_fields (&bp, expr);
438 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
439 pack_ts_decl_wrtl_value_fields (&bp, expr);
441 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
442 pack_ts_decl_with_vis_value_fields (&bp, expr);
444 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
445 pack_ts_function_decl_value_fields (&bp, expr);
447 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
448 pack_ts_type_common_value_fields (&bp, expr);
450 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
452 stream_output_location (ob, &bp, EXPR_LOCATION (expr));
453 if (code == MEM_REF
454 || code == TARGET_MEM_REF)
456 bp_pack_value (&bp, MR_DEPENDENCE_CLIQUE (expr), sizeof (short) * 8);
457 if (MR_DEPENDENCE_CLIQUE (expr) != 0)
458 bp_pack_value (&bp, MR_DEPENDENCE_BASE (expr), sizeof (short) * 8);
462 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
463 pack_ts_block_value_fields (ob, &bp, expr);
465 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
466 pack_ts_translation_unit_decl_value_fields (ob, &bp, expr);
468 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
469 cl_optimization_stream_out (&bp, TREE_OPTIMIZATION (expr));
471 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
472 bp_pack_var_len_unsigned (&bp, vec_safe_length (BINFO_BASE_ACCESSES (expr)));
474 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
475 bp_pack_var_len_unsigned (&bp, CONSTRUCTOR_NELTS (expr));
477 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION)
478 /* Don't stream these when passing things to a different target. */
479 && !lto_stream_offload_p)
480 cl_target_option_stream_out (ob, &bp, TREE_TARGET_OPTION (expr));
482 if (code == OMP_CLAUSE)
483 pack_ts_omp_clause_value_fields (ob, &bp, expr);
485 streamer_write_bitpack (&bp);
489 /* Emit the chain of tree nodes starting at T. OB is the output block
490 to write to. REF_P is true if chain elements should be emitted
491 as references. */
493 void
494 streamer_write_chain (struct output_block *ob, tree t, bool ref_p)
496 while (t)
498 /* We avoid outputting external vars or functions by reference
499 to the global decls section as we do not want to have them
500 enter decl merging. This is, of course, only for the call
501 for streaming BLOCK_VARS, but other callers are safe.
502 See also lto-streamer-out.c:DFS_write_tree_body. */
503 if (VAR_OR_FUNCTION_DECL_P (t)
504 && DECL_EXTERNAL (t))
505 stream_write_tree_shallow_non_ref (ob, t, ref_p);
506 else
507 stream_write_tree (ob, t, ref_p);
509 t = TREE_CHAIN (t);
512 /* Write a sentinel to terminate the chain. */
513 stream_write_tree (ob, NULL_TREE, ref_p);
517 /* Write all pointer fields in the TS_COMMON structure of EXPR to output
518 block OB. If REF_P is true, write a reference to EXPR's pointer
519 fields. */
521 static void
522 write_ts_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
524 if (TREE_CODE (expr) != IDENTIFIER_NODE)
525 stream_write_tree (ob, TREE_TYPE (expr), ref_p);
529 /* Write all pointer fields in the TS_VECTOR structure of EXPR to output
530 block OB. If REF_P is true, write a reference to EXPR's pointer
531 fields. */
533 static void
534 write_ts_vector_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
536 /* Note that the number of elements for EXPR has already been emitted
537 in EXPR's header (see streamer_write_tree_header). */
538 unsigned int count = vector_cst_encoded_nelts (expr);
539 for (unsigned int i = 0; i < count; ++i)
540 stream_write_tree (ob, VECTOR_CST_ENCODED_ELT (expr, i), ref_p);
544 /* Write all pointer fields in the TS_POLY_INT_CST structure of EXPR to
545 output block OB. If REF_P is true, write a reference to EXPR's pointer
546 fields. */
548 static void
549 write_ts_poly_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
551 for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
552 stream_write_tree (ob, POLY_INT_CST_COEFF (expr, i), ref_p);
556 /* Write all pointer fields in the TS_COMPLEX structure of EXPR to output
557 block OB. If REF_P is true, write a reference to EXPR's pointer
558 fields. */
560 static void
561 write_ts_complex_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
563 stream_write_tree (ob, TREE_REALPART (expr), ref_p);
564 stream_write_tree (ob, TREE_IMAGPART (expr), ref_p);
568 /* Write all pointer fields in the TS_DECL_MINIMAL structure of EXPR
569 to output block OB. If REF_P is true, write a reference to EXPR's
570 pointer fields. */
572 static void
573 write_ts_decl_minimal_tree_pointers (struct output_block *ob, tree expr,
574 bool ref_p)
576 /* Drop names that were created for anonymous entities. */
577 if (DECL_NAME (expr)
578 && TREE_CODE (DECL_NAME (expr)) == IDENTIFIER_NODE
579 && anon_aggrname_p (DECL_NAME (expr)))
580 stream_write_tree (ob, NULL_TREE, ref_p);
581 else
582 stream_write_tree (ob, DECL_NAME (expr), ref_p);
583 if (TREE_CODE (expr) != TRANSLATION_UNIT_DECL
584 && ! DECL_CONTEXT (expr))
585 stream_write_tree (ob, (*all_translation_units)[0], ref_p);
586 else
587 stream_write_tree (ob, DECL_CONTEXT (expr), ref_p);
591 /* Write all pointer fields in the TS_DECL_COMMON structure of EXPR to
592 output block OB. If REF_P is true, write a reference to EXPR's
593 pointer fields. */
595 static void
596 write_ts_decl_common_tree_pointers (struct output_block *ob, tree expr,
597 bool ref_p)
599 stream_write_tree (ob, DECL_SIZE (expr), ref_p);
600 stream_write_tree (ob, DECL_SIZE_UNIT (expr), ref_p);
602 /* Note, DECL_INITIAL is not handled here. Since DECL_INITIAL needs
603 special handling in LTO, it must be handled by streamer hooks. */
605 stream_write_tree (ob, DECL_ATTRIBUTES (expr), ref_p);
606 stream_write_tree (ob, DECL_ABSTRACT_ORIGIN (expr), ref_p);
608 if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
609 && DECL_HAS_VALUE_EXPR_P (expr))
610 stream_write_tree (ob, DECL_VALUE_EXPR (expr), ref_p);
612 if (VAR_P (expr)
613 && DECL_HAS_DEBUG_EXPR_P (expr))
614 stream_write_tree (ob, DECL_DEBUG_EXPR (expr), ref_p);
618 /* Write all pointer fields in the TS_DECL_NON_COMMON structure of
619 EXPR to output block OB. If REF_P is true, write a reference to EXPR's
620 pointer fields. */
622 static void
623 write_ts_decl_non_common_tree_pointers (struct output_block *ob, tree expr,
624 bool ref_p)
626 if (TREE_CODE (expr) == TYPE_DECL)
627 stream_write_tree (ob, DECL_ORIGINAL_TYPE (expr), ref_p);
631 /* Write all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
632 to output block OB. If REF_P is true, write a reference to EXPR's
633 pointer fields. */
635 static void
636 write_ts_decl_with_vis_tree_pointers (struct output_block *ob, tree expr,
637 bool ref_p)
639 /* Make sure we don't inadvertently set the assembler name. */
640 if (DECL_ASSEMBLER_NAME_SET_P (expr))
641 stream_write_tree (ob, DECL_ASSEMBLER_NAME (expr), ref_p);
642 else
643 stream_write_tree (ob, NULL_TREE, false);
647 /* Write all pointer fields in the TS_FIELD_DECL structure of EXPR to
648 output block OB. If REF_P is true, write a reference to EXPR's
649 pointer fields. */
651 static void
652 write_ts_field_decl_tree_pointers (struct output_block *ob, tree expr,
653 bool ref_p)
655 stream_write_tree (ob, DECL_FIELD_OFFSET (expr), ref_p);
656 stream_write_tree (ob, DECL_BIT_FIELD_TYPE (expr), ref_p);
657 stream_write_tree (ob, DECL_BIT_FIELD_REPRESENTATIVE (expr), ref_p);
658 stream_write_tree (ob, DECL_FIELD_BIT_OFFSET (expr), ref_p);
659 stream_write_tree (ob, DECL_FCONTEXT (expr), ref_p);
663 /* Write all pointer fields in the TS_FUNCTION_DECL structure of EXPR
664 to output block OB. If REF_P is true, write a reference to EXPR's
665 pointer fields. */
667 static void
668 write_ts_function_decl_tree_pointers (struct output_block *ob, tree expr,
669 bool ref_p)
671 stream_write_tree (ob, DECL_VINDEX (expr), ref_p);
672 /* DECL_STRUCT_FUNCTION is handled by lto_output_function. */
673 stream_write_tree (ob, DECL_FUNCTION_PERSONALITY (expr), ref_p);
674 /* Don't stream these when passing things to a different target. */
675 if (!lto_stream_offload_p)
676 stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p);
677 stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr), ref_p);
681 /* Write all pointer fields in the TS_TYPE_COMMON structure of EXPR to
682 output block OB. If REF_P is true, write a reference to EXPR's
683 pointer fields. */
685 static void
686 write_ts_type_common_tree_pointers (struct output_block *ob, tree expr,
687 bool ref_p)
689 stream_write_tree (ob, TYPE_SIZE (expr), ref_p);
690 stream_write_tree (ob, TYPE_SIZE_UNIT (expr), ref_p);
691 stream_write_tree (ob, TYPE_ATTRIBUTES (expr), ref_p);
692 stream_write_tree (ob, TYPE_NAME (expr), ref_p);
693 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
694 reconstructed during fixup. */
695 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
696 during fixup. */
697 stream_write_tree (ob, TYPE_MAIN_VARIANT (expr), ref_p);
698 stream_write_tree (ob, TYPE_CONTEXT (expr), ref_p);
699 /* TYPE_CANONICAL is re-computed during type merging, so no need
700 to stream it here. */
701 stream_write_tree (ob, TYPE_STUB_DECL (expr), ref_p);
704 /* Write all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
705 to output block OB. If REF_P is true, write a reference to EXPR's
706 pointer fields. */
708 static void
709 write_ts_type_non_common_tree_pointers (struct output_block *ob, tree expr,
710 bool ref_p)
712 if (TREE_CODE (expr) == ENUMERAL_TYPE)
713 stream_write_tree (ob, TYPE_VALUES (expr), ref_p);
714 else if (TREE_CODE (expr) == ARRAY_TYPE)
715 stream_write_tree (ob, TYPE_DOMAIN (expr), ref_p);
716 else if (RECORD_OR_UNION_TYPE_P (expr))
717 streamer_write_chain (ob, TYPE_FIELDS (expr), ref_p);
718 else if (TREE_CODE (expr) == FUNCTION_TYPE
719 || TREE_CODE (expr) == METHOD_TYPE)
720 stream_write_tree (ob, TYPE_ARG_TYPES (expr), ref_p);
722 if (!POINTER_TYPE_P (expr))
723 stream_write_tree (ob, TYPE_MIN_VALUE_RAW (expr), ref_p);
724 stream_write_tree (ob, TYPE_MAX_VALUE_RAW (expr), ref_p);
728 /* Write all pointer fields in the TS_LIST structure of EXPR to output
729 block OB. If REF_P is true, write a reference to EXPR's pointer
730 fields. */
732 static void
733 write_ts_list_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
735 stream_write_tree (ob, TREE_PURPOSE (expr), ref_p);
736 stream_write_tree (ob, TREE_VALUE (expr), ref_p);
737 stream_write_tree (ob, TREE_CHAIN (expr), ref_p);
741 /* Write all pointer fields in the TS_VEC structure of EXPR to output
742 block OB. If REF_P is true, write a reference to EXPR's pointer
743 fields. */
745 static void
746 write_ts_vec_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
748 int i;
750 /* Note that the number of slots for EXPR has already been emitted
751 in EXPR's header (see streamer_write_tree_header). */
752 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
753 stream_write_tree (ob, TREE_VEC_ELT (expr, i), ref_p);
757 /* Write all pointer fields in the TS_EXP structure of EXPR to output
758 block OB. If REF_P is true, write a reference to EXPR's pointer
759 fields. */
761 static void
762 write_ts_exp_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
764 int i;
766 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
767 stream_write_tree (ob, TREE_OPERAND (expr, i), ref_p);
768 stream_write_tree (ob, TREE_BLOCK (expr), ref_p);
772 /* Write all pointer fields in the TS_BLOCK structure of EXPR to output
773 block OB. If REF_P is true, write a reference to EXPR's pointer
774 fields. */
776 static void
777 write_ts_block_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
779 streamer_write_chain (ob, BLOCK_VARS (expr), ref_p);
781 stream_write_tree (ob, BLOCK_SUPERCONTEXT (expr), ref_p);
783 /* Stream BLOCK_ABSTRACT_ORIGIN for the limited cases we can handle - those
784 that represent inlined function scopes.
785 For the rest them on the floor instead of ICEing in dwarf2out.c, but
786 keep the notion of whether the block is an inlined block by refering
787 to itself for the sake of tree_nonartificial_location. */
788 if (inlined_function_outer_scope_p (expr))
790 tree ultimate_origin = block_ultimate_origin (expr);
791 stream_write_tree (ob, ultimate_origin, ref_p);
793 else
794 stream_write_tree (ob, (BLOCK_ABSTRACT_ORIGIN (expr)
795 ? expr : NULL_TREE), ref_p);
796 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
797 for early inlined BLOCKs so drop it on the floor instead of ICEing in
798 dwarf2out.c. */
800 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
801 streaming time. */
803 /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this
804 list is re-constructed from BLOCK_SUPERCONTEXT. */
808 /* Write all pointer fields in the TS_BINFO structure of EXPR to output
809 block OB. If REF_P is true, write a reference to EXPR's pointer
810 fields. */
812 static void
813 write_ts_binfo_tree_pointers (struct output_block *ob, tree expr, bool ref_p)
815 unsigned i;
816 tree t;
818 /* Note that the number of BINFO slots has already been emitted in
819 EXPR's header (see streamer_write_tree_header) because this length
820 is needed to build the empty BINFO node on the reader side. */
821 FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (expr), i, t)
822 stream_write_tree (ob, t, ref_p);
823 stream_write_tree (ob, NULL_TREE, false);
825 stream_write_tree (ob, BINFO_OFFSET (expr), ref_p);
826 stream_write_tree (ob, BINFO_VTABLE (expr), ref_p);
827 stream_write_tree (ob, BINFO_VPTR_FIELD (expr), ref_p);
829 /* The number of BINFO_BASE_ACCESSES has already been emitted in
830 EXPR's bitfield section. */
831 FOR_EACH_VEC_SAFE_ELT (BINFO_BASE_ACCESSES (expr), i, t)
832 stream_write_tree (ob, t, ref_p);
834 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
835 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
839 /* Write all pointer fields in the TS_CONSTRUCTOR structure of EXPR to
840 output block OB. If REF_P is true, write a reference to EXPR's
841 pointer fields. */
843 static void
844 write_ts_constructor_tree_pointers (struct output_block *ob, tree expr,
845 bool ref_p)
847 unsigned i;
848 tree index, value;
850 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value)
852 stream_write_tree (ob, index, ref_p);
853 stream_write_tree (ob, value, ref_p);
858 /* Write all pointer fields in the TS_OMP_CLAUSE structure of EXPR
859 to output block OB. If REF_P is true, write a reference to EXPR's
860 pointer fields. */
862 static void
863 write_ts_omp_clause_tree_pointers (struct output_block *ob, tree expr,
864 bool ref_p)
866 int i;
867 for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
868 stream_write_tree (ob, OMP_CLAUSE_OPERAND (expr, i), ref_p);
869 if (OMP_CLAUSE_CODE (expr) == OMP_CLAUSE_REDUCTION)
871 /* We don't stream these right now, handle it if streaming
872 of them is needed. */
873 gcc_assert (OMP_CLAUSE_REDUCTION_GIMPLE_INIT (expr) == NULL);
874 gcc_assert (OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (expr) == NULL);
876 stream_write_tree (ob, OMP_CLAUSE_CHAIN (expr), ref_p);
880 /* Write all pointer fields in EXPR to output block OB. If REF_P is true,
881 the leaves of EXPR are emitted as references. */
883 void
884 streamer_write_tree_body (struct output_block *ob, tree expr, bool ref_p)
886 enum tree_code code;
888 lto_stats.num_tree_bodies_output++;
890 code = TREE_CODE (expr);
892 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
893 write_ts_common_tree_pointers (ob, expr, ref_p);
895 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
896 write_ts_vector_tree_pointers (ob, expr, ref_p);
898 if (CODE_CONTAINS_STRUCT (code, TS_POLY_INT_CST))
899 write_ts_poly_tree_pointers (ob, expr, ref_p);
901 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
902 write_ts_complex_tree_pointers (ob, expr, ref_p);
904 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
905 write_ts_decl_minimal_tree_pointers (ob, expr, ref_p);
907 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
908 write_ts_decl_common_tree_pointers (ob, expr, ref_p);
910 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
911 write_ts_decl_non_common_tree_pointers (ob, expr, ref_p);
913 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
914 write_ts_decl_with_vis_tree_pointers (ob, expr, ref_p);
916 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
917 write_ts_field_decl_tree_pointers (ob, expr, ref_p);
919 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
920 write_ts_function_decl_tree_pointers (ob, expr, ref_p);
922 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
923 write_ts_type_common_tree_pointers (ob, expr, ref_p);
925 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
926 write_ts_type_non_common_tree_pointers (ob, expr, ref_p);
928 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
929 write_ts_list_tree_pointers (ob, expr, ref_p);
931 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
932 write_ts_vec_tree_pointers (ob, expr, ref_p);
934 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
935 write_ts_exp_tree_pointers (ob, expr, ref_p);
937 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
938 write_ts_block_tree_pointers (ob, expr, ref_p);
940 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
941 write_ts_binfo_tree_pointers (ob, expr, ref_p);
943 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
944 write_ts_constructor_tree_pointers (ob, expr, ref_p);
946 if (code == OMP_CLAUSE)
947 write_ts_omp_clause_tree_pointers (ob, expr, ref_p);
951 /* Emit header information for tree EXPR to output block OB. The header
952 contains everything needed to instantiate an empty skeleton for
953 EXPR on the reading side. IX is the index into the streamer cache
954 where EXPR is stored. */
956 void
957 streamer_write_tree_header (struct output_block *ob, tree expr)
959 enum LTO_tags tag;
960 enum tree_code code;
962 /* We should not see any tree nodes not handled by the streamer. */
963 code = TREE_CODE (expr);
965 /* The header of a tree node consists of its tag, the size of
966 the node, and any other information needed to instantiate
967 EXPR on the reading side (such as the number of slots in
968 variable sized nodes). */
969 tag = lto_tree_code_to_tag (code);
970 streamer_write_record_start (ob, tag);
972 /* The text in strings and identifiers are completely emitted in
973 the header. */
974 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
975 streamer_write_string_cst (ob, ob->main_stream, expr);
976 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
977 write_identifier (ob, ob->main_stream, expr);
978 else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
980 bitpack_d bp = bitpack_create (ob->main_stream);
981 bp_pack_value (&bp, VECTOR_CST_LOG2_NPATTERNS (expr), 8);
982 bp_pack_value (&bp, VECTOR_CST_NELTS_PER_PATTERN (expr), 8);
983 streamer_write_bitpack (&bp);
985 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
986 streamer_write_hwi (ob, TREE_VEC_LENGTH (expr));
987 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
988 streamer_write_uhwi (ob, BINFO_N_BASE_BINFOS (expr));
989 else if (TREE_CODE (expr) == CALL_EXPR)
990 streamer_write_uhwi (ob, call_expr_nargs (expr));
991 else if (TREE_CODE (expr) == OMP_CLAUSE)
992 streamer_write_uhwi (ob, OMP_CLAUSE_CODE (expr));
993 else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
995 gcc_checking_assert (TREE_INT_CST_NUNITS (expr));
996 streamer_write_uhwi (ob, TREE_INT_CST_NUNITS (expr));
997 streamer_write_uhwi (ob, TREE_INT_CST_EXT_NUNITS (expr));
1002 /* Emit the integer constant CST to output block OB. If REF_P is true,
1003 CST's type will be emitted as a reference. */
1005 void
1006 streamer_write_integer_cst (struct output_block *ob, tree cst, bool ref_p)
1008 int i;
1009 int len = TREE_INT_CST_NUNITS (cst);
1010 gcc_assert (!TREE_OVERFLOW (cst));
1011 streamer_write_record_start (ob, LTO_integer_cst);
1012 stream_write_tree (ob, TREE_TYPE (cst), ref_p);
1013 /* We're effectively streaming a non-sign-extended wide_int here,
1014 so there's no need to stream TREE_INT_CST_EXT_NUNITS or any
1015 array members beyond LEN. We'll recreate the tree from the
1016 wide_int and the type. */
1017 streamer_write_uhwi (ob, len);
1018 for (i = 0; i < len; i++)
1019 streamer_write_hwi (ob, TREE_INT_CST_ELT (cst, i));