1 /* Routines for reading trees from a file stream.
3 Copyright (C) 2011-2015 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"
29 #include "double-int.h"
37 #include "fixed-value.h"
39 #include "fold-const.h"
40 #include "stringpool.h"
43 #include "hard-reg-set.h"
46 #include "basic-block.h"
47 #include "tree-ssa-alias.h"
48 #include "internal-fn.h"
49 #include "gimple-expr.h"
53 #include "plugin-api.h"
56 #include "tree-streamer.h"
57 #include "data-streamer.h"
58 #include "streamer-hooks.h"
59 #include "lto-streamer.h"
63 /* Read a STRING_CST from the string table in DATA_IN using input
67 streamer_read_string_cst (struct data_in
*data_in
, struct lto_input_block
*ib
)
72 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
75 return build_string (len
, ptr
);
79 /* Read an IDENTIFIER from the string table in DATA_IN using input
83 input_identifier (struct data_in
*data_in
, struct lto_input_block
*ib
)
88 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
91 return get_identifier_with_length (ptr
, len
);
95 /* Read a chain of tree nodes from input block IB. DATA_IN contains
96 tables and descriptors for the file being read. */
99 streamer_read_chain (struct lto_input_block
*ib
, struct data_in
*data_in
)
101 tree first
, prev
, curr
;
103 /* The chain is written as NULL terminated list of trees. */
104 first
= prev
= NULL_TREE
;
107 curr
= stream_read_tree (ib
, data_in
);
109 TREE_CHAIN (prev
) = curr
;
121 /* Unpack all the non-pointer fields of the TS_BASE structure of
122 expression EXPR from bitpack BP. */
125 unpack_ts_base_value_fields (struct bitpack_d
*bp
, tree expr
)
127 /* Note that the code for EXPR has already been unpacked to create EXPR in
128 streamer_alloc_tree. */
131 TREE_SIDE_EFFECTS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
132 TREE_CONSTANT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
133 TREE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
135 /* TREE_PUBLIC is used on types to indicate that the type
136 has a TYPE_CACHED_VALUES vector. This is not streamed out,
137 so we skip it here. */
138 TREE_PUBLIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
141 bp_unpack_value (bp
, 4);
142 TREE_ADDRESSABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
143 TREE_THIS_VOLATILE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
145 DECL_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
146 else if (TYPE_P (expr
))
147 TYPE_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
149 bp_unpack_value (bp
, 1);
150 TREE_ASM_WRITTEN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
152 TYPE_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
154 TREE_NO_WARNING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
155 TREE_NOTHROW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
156 TREE_STATIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
157 if (TREE_CODE (expr
) != TREE_BINFO
)
158 TREE_PRIVATE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
159 TREE_PROTECTED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
160 TREE_DEPRECATED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
163 TYPE_SATURATING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
164 TYPE_ADDR_SPACE (expr
) = (unsigned) bp_unpack_value (bp
, 8);
166 else if (TREE_CODE (expr
) == SSA_NAME
)
167 SSA_NAME_IS_DEFAULT_DEF (expr
) = (unsigned) bp_unpack_value (bp
, 1);
169 bp_unpack_value (bp
, 1);
173 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
174 expression EXPR from bitpack BP. */
177 unpack_ts_int_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
180 for (i
= 0; i
< TREE_INT_CST_EXT_NUNITS (expr
); i
++)
181 TREE_INT_CST_ELT (expr
, i
) = bp_unpack_var_len_int (bp
);
185 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
186 expression EXPR from bitpack BP. */
189 unpack_ts_real_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
195 /* Clear all bits of the real value type so that we can later do
196 bitwise comparisons to see if two values are the same. */
197 memset (&r
, 0, sizeof r
);
198 r
.cl
= (unsigned) bp_unpack_value (bp
, 2);
199 r
.decimal
= (unsigned) bp_unpack_value (bp
, 1);
200 r
.sign
= (unsigned) bp_unpack_value (bp
, 1);
201 r
.signalling
= (unsigned) bp_unpack_value (bp
, 1);
202 r
.canonical
= (unsigned) bp_unpack_value (bp
, 1);
203 r
.uexp
= (unsigned) bp_unpack_value (bp
, EXP_BITS
);
204 for (i
= 0; i
< SIGSZ
; i
++)
205 r
.sig
[i
] = (unsigned long) bp_unpack_value (bp
, HOST_BITS_PER_LONG
);
207 rp
= ggc_alloc
<real_value
> ();
208 memcpy (rp
, &r
, sizeof (REAL_VALUE_TYPE
));
209 TREE_REAL_CST_PTR (expr
) = rp
;
213 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
214 expression EXPR from bitpack BP. */
217 unpack_ts_fixed_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
219 FIXED_VALUE_TYPE
*fp
= ggc_alloc
<fixed_value
> ();
220 fp
->mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
221 fp
->data
.low
= bp_unpack_var_len_int (bp
);
222 fp
->data
.high
= bp_unpack_var_len_int (bp
);
223 TREE_FIXED_CST_PTR (expr
) = fp
;
226 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
227 of expression EXPR from bitpack BP. */
230 unpack_ts_decl_common_value_fields (struct bitpack_d
*bp
, tree expr
)
232 DECL_MODE (expr
) = bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
233 DECL_NONLOCAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
234 DECL_VIRTUAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
235 DECL_IGNORED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
236 DECL_ABSTRACT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
237 DECL_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
238 DECL_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
239 DECL_PRESERVE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
240 DECL_EXTERNAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
241 DECL_GIMPLE_REG_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
242 DECL_ALIGN (expr
) = (unsigned) bp_unpack_var_len_unsigned (bp
);
244 if (TREE_CODE (expr
) == LABEL_DECL
)
246 EH_LANDING_PAD_NR (expr
) = (int) bp_unpack_var_len_unsigned (bp
);
248 /* Always assume an initial value of -1 for LABEL_DECL_UID to
249 force gimple_set_bb to recreate label_to_block_map. */
250 LABEL_DECL_UID (expr
) = -1;
253 if (TREE_CODE (expr
) == FIELD_DECL
)
255 DECL_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
256 DECL_NONADDRESSABLE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
257 expr
->decl_common
.off_align
= bp_unpack_value (bp
, 8);
260 if (TREE_CODE (expr
) == VAR_DECL
)
262 DECL_HAS_DEBUG_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
263 DECL_NONLOCAL_FRAME (expr
) = (unsigned) bp_unpack_value (bp
, 1);
266 if (TREE_CODE (expr
) == RESULT_DECL
267 || TREE_CODE (expr
) == PARM_DECL
268 || TREE_CODE (expr
) == VAR_DECL
)
270 DECL_BY_REFERENCE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
271 if (TREE_CODE (expr
) == VAR_DECL
272 || TREE_CODE (expr
) == PARM_DECL
)
273 DECL_HAS_VALUE_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
278 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
279 of expression EXPR from bitpack BP. */
282 unpack_ts_decl_wrtl_value_fields (struct bitpack_d
*bp
, tree expr
)
284 DECL_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
288 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
289 of expression EXPR from bitpack BP. */
292 unpack_ts_decl_with_vis_value_fields (struct bitpack_d
*bp
, tree expr
)
294 DECL_COMMON (expr
) = (unsigned) bp_unpack_value (bp
, 1);
295 DECL_DLLIMPORT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
296 DECL_WEAK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
297 DECL_SEEN_IN_BIND_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
298 DECL_COMDAT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
299 DECL_VISIBILITY (expr
) = (enum symbol_visibility
) bp_unpack_value (bp
, 2);
300 DECL_VISIBILITY_SPECIFIED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
302 if (TREE_CODE (expr
) == VAR_DECL
)
304 DECL_HARD_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
305 DECL_IN_CONSTANT_POOL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
308 if (TREE_CODE (expr
) == FUNCTION_DECL
)
310 DECL_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
311 DECL_CXX_CONSTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
312 DECL_CXX_DESTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
317 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
318 of expression EXPR from bitpack BP. */
321 unpack_ts_function_decl_value_fields (struct bitpack_d
*bp
, tree expr
)
323 DECL_BUILT_IN_CLASS (expr
) = bp_unpack_enum (bp
, built_in_class
,
325 DECL_STATIC_CONSTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
326 DECL_STATIC_DESTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
327 DECL_UNINLINABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
328 DECL_POSSIBLY_INLINED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
329 DECL_IS_NOVOPS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
330 DECL_IS_RETURNS_TWICE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
331 DECL_IS_MALLOC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
332 DECL_IS_OPERATOR_NEW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
333 DECL_DECLARED_INLINE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
334 DECL_STATIC_CHAIN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
335 DECL_NO_INLINE_WARNING_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
336 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr
)
337 = (unsigned) bp_unpack_value (bp
, 1);
338 DECL_NO_LIMIT_STACK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
339 DECL_DISREGARD_INLINE_LIMITS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
340 DECL_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
341 DECL_LOOPING_CONST_OR_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
342 if (DECL_BUILT_IN_CLASS (expr
) != NOT_BUILT_IN
)
344 DECL_FUNCTION_CODE (expr
) = (enum built_in_function
) bp_unpack_value (bp
,
346 if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_NORMAL
347 && DECL_FUNCTION_CODE (expr
) >= END_BUILTINS
)
348 fatal_error ("machine independent builtin code out of range");
349 else if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_MD
)
351 tree result
= targetm
.builtin_decl (DECL_FUNCTION_CODE (expr
), true);
352 if (!result
|| result
== error_mark_node
)
353 fatal_error ("target specific builtin not available");
359 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
360 of expression EXPR from bitpack BP. */
363 unpack_ts_type_common_value_fields (struct bitpack_d
*bp
, tree expr
)
367 mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
368 SET_TYPE_MODE (expr
, mode
);
369 TYPE_STRING_FLAG (expr
) = (unsigned) bp_unpack_value (bp
, 1);
370 TYPE_NO_FORCE_BLK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
371 TYPE_NEEDS_CONSTRUCTING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
372 if (RECORD_OR_UNION_TYPE_P (expr
))
374 TYPE_TRANSPARENT_AGGR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
375 TYPE_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
377 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
378 TYPE_NONALIASED_COMPONENT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
379 TYPE_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
380 TYPE_RESTRICT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
381 TYPE_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
382 TYPE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
383 TYPE_PRECISION (expr
) = bp_unpack_var_len_unsigned (bp
);
384 TYPE_ALIGN (expr
) = bp_unpack_var_len_unsigned (bp
);
385 TYPE_ALIAS_SET (expr
) = bp_unpack_var_len_int (bp
);
389 /* Unpack all the non-pointer fields of the TS_BLOCK structure
390 of expression EXPR from bitpack BP. */
393 unpack_ts_block_value_fields (struct data_in
*data_in
,
394 struct bitpack_d
*bp
, tree expr
)
396 BLOCK_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
397 /* BLOCK_NUMBER is recomputed. */
398 BLOCK_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
401 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
402 structure of expression EXPR from bitpack BP. */
405 unpack_ts_translation_unit_decl_value_fields (struct data_in
*data_in
,
406 struct bitpack_d
*bp
, tree expr
)
408 TRANSLATION_UNIT_LANGUAGE (expr
) = xstrdup (bp_unpack_string (data_in
, bp
));
409 vec_safe_push (all_translation_units
, expr
);
413 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
414 structure of expression EXPR from bitpack BP. */
417 unpack_ts_omp_clause_value_fields (struct data_in
*data_in
,
418 struct bitpack_d
*bp
, tree expr
)
420 OMP_CLAUSE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
421 switch (OMP_CLAUSE_CODE (expr
))
423 case OMP_CLAUSE_DEFAULT
:
424 OMP_CLAUSE_DEFAULT_KIND (expr
)
425 = bp_unpack_enum (bp
, omp_clause_default_kind
,
426 OMP_CLAUSE_DEFAULT_LAST
);
428 case OMP_CLAUSE_SCHEDULE
:
429 OMP_CLAUSE_SCHEDULE_KIND (expr
)
430 = bp_unpack_enum (bp
, omp_clause_schedule_kind
,
431 OMP_CLAUSE_SCHEDULE_LAST
);
433 case OMP_CLAUSE_DEPEND
:
434 OMP_CLAUSE_DEPEND_KIND (expr
)
435 = bp_unpack_enum (bp
, omp_clause_depend_kind
, OMP_CLAUSE_DEPEND_LAST
);
438 OMP_CLAUSE_MAP_KIND (expr
)
439 = bp_unpack_enum (bp
, omp_clause_map_kind
, OMP_CLAUSE_MAP_LAST
);
441 case OMP_CLAUSE_PROC_BIND
:
442 OMP_CLAUSE_PROC_BIND_KIND (expr
)
443 = bp_unpack_enum (bp
, omp_clause_proc_bind_kind
,
444 OMP_CLAUSE_PROC_BIND_LAST
);
446 case OMP_CLAUSE_REDUCTION
:
447 OMP_CLAUSE_REDUCTION_CODE (expr
)
448 = bp_unpack_enum (bp
, tree_code
, MAX_TREE_CODES
);
455 /* Unpack all the non-pointer fields in EXPR into a bit pack. */
458 unpack_value_fields (struct data_in
*data_in
, struct bitpack_d
*bp
, tree expr
)
462 code
= TREE_CODE (expr
);
464 /* Note that all these functions are highly sensitive to changes in
465 the types and sizes of each of the fields being packed. */
466 unpack_ts_base_value_fields (bp
, expr
);
468 if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
469 unpack_ts_int_cst_value_fields (bp
, expr
);
471 if (CODE_CONTAINS_STRUCT (code
, TS_REAL_CST
))
472 unpack_ts_real_cst_value_fields (bp
, expr
);
474 if (CODE_CONTAINS_STRUCT (code
, TS_FIXED_CST
))
475 unpack_ts_fixed_cst_value_fields (bp
, expr
);
477 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
478 DECL_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
480 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
481 unpack_ts_decl_common_value_fields (bp
, expr
);
483 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WRTL
))
484 unpack_ts_decl_wrtl_value_fields (bp
, expr
);
486 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
487 unpack_ts_decl_with_vis_value_fields (bp
, expr
);
489 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
490 unpack_ts_function_decl_value_fields (bp
, expr
);
492 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
493 unpack_ts_type_common_value_fields (bp
, expr
);
495 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
497 SET_EXPR_LOCATION (expr
, stream_input_location (bp
, data_in
));
499 || code
== TARGET_MEM_REF
)
501 MR_DEPENDENCE_CLIQUE (expr
)
502 = (unsigned)bp_unpack_value (bp
, sizeof (short) * 8);
503 if (MR_DEPENDENCE_CLIQUE (expr
) != 0)
504 MR_DEPENDENCE_BASE (expr
)
505 = (unsigned)bp_unpack_value (bp
, sizeof (short) * 8);
509 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
510 unpack_ts_block_value_fields (data_in
, bp
, expr
);
512 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
513 unpack_ts_translation_unit_decl_value_fields (data_in
, bp
, expr
);
515 if (CODE_CONTAINS_STRUCT (code
, TS_OPTIMIZATION
))
516 cl_optimization_stream_in (bp
, TREE_OPTIMIZATION (expr
));
518 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
520 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
522 vec_safe_grow (BINFO_BASE_ACCESSES (expr
), length
);
525 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
527 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
529 vec_safe_grow (CONSTRUCTOR_ELTS (expr
), length
);
532 #ifndef ACCEL_COMPILER
533 if (CODE_CONTAINS_STRUCT (code
, TS_TARGET_OPTION
))
534 cl_target_option_stream_in (data_in
, bp
, TREE_TARGET_OPTION (expr
));
537 if (code
== OMP_CLAUSE
)
538 unpack_ts_omp_clause_value_fields (data_in
, bp
, expr
);
542 /* Read all the language-independent bitfield values for EXPR from IB.
543 Return the partially unpacked bitpack so the caller can unpack any other
544 bitfield values that the writer may have written. */
547 streamer_read_tree_bitfields (struct lto_input_block
*ib
,
548 struct data_in
*data_in
, tree expr
)
553 /* Read the bitpack of non-pointer values from IB. */
554 bp
= streamer_read_bitpack (ib
);
556 /* The first word in BP contains the code of the tree that we
557 are about to read. */
558 code
= (enum tree_code
) bp_unpack_value (&bp
, 16);
559 lto_tag_check (lto_tree_code_to_tag (code
),
560 lto_tree_code_to_tag (TREE_CODE (expr
)));
562 /* Unpack all the value fields from BP. */
563 unpack_value_fields (data_in
, &bp
, expr
);
569 /* Materialize a new tree from input block IB using descriptors in
570 DATA_IN. The code for the new tree should match TAG. Store in
571 *IX_P the index into the reader cache where the new tree is stored. */
574 streamer_alloc_tree (struct lto_input_block
*ib
, struct data_in
*data_in
,
579 #ifdef LTO_STREAMER_DEBUG
580 HOST_WIDE_INT orig_address_in_writer
;
585 #ifdef LTO_STREAMER_DEBUG
586 /* Read the word representing the memory address for the tree
587 as it was written by the writer. This is useful when
588 debugging differences between the writer and reader. */
589 orig_address_in_writer
= streamer_read_hwi (ib
);
590 gcc_assert ((intptr_t) orig_address_in_writer
== orig_address_in_writer
);
593 code
= lto_tag_to_tree_code (tag
);
595 /* We should never see an SSA_NAME tree. Only the version numbers of
596 SSA names are ever written out. See input_ssa_names. */
597 gcc_assert (code
!= SSA_NAME
);
599 /* Instantiate a new tree using the header data. */
600 if (CODE_CONTAINS_STRUCT (code
, TS_STRING
))
601 result
= streamer_read_string_cst (data_in
, ib
);
602 else if (CODE_CONTAINS_STRUCT (code
, TS_IDENTIFIER
))
603 result
= input_identifier (data_in
, ib
);
604 else if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
606 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
607 result
= make_tree_vec (len
);
609 else if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
611 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
612 result
= make_vector (len
);
614 else if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
616 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
617 result
= make_tree_binfo (len
);
619 else if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
621 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
622 unsigned HOST_WIDE_INT ext_len
= streamer_read_uhwi (ib
);
623 result
= make_int_cst (len
, ext_len
);
625 else if (code
== CALL_EXPR
)
627 unsigned HOST_WIDE_INT nargs
= streamer_read_uhwi (ib
);
628 return build_vl_exp (CALL_EXPR
, nargs
+ 3);
630 else if (code
== OMP_CLAUSE
)
632 enum omp_clause_code subcode
633 = (enum omp_clause_code
) streamer_read_uhwi (ib
);
634 return build_omp_clause (UNKNOWN_LOCATION
, subcode
);
638 /* For all other nodes, materialize the tree with a raw
640 result
= make_node (code
);
643 #ifdef LTO_STREAMER_DEBUG
644 /* Store the original address of the tree as seen by the writer
645 in RESULT's aux field. This is useful when debugging streaming
646 problems. This way, a debugging session can be started on
647 both writer and reader with a breakpoint using this address
649 lto_orig_address_map (result
, (intptr_t) orig_address_in_writer
);
656 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
657 block IB. DATA_IN contains tables and descriptors for the
662 lto_input_ts_common_tree_pointers (struct lto_input_block
*ib
,
663 struct data_in
*data_in
, tree expr
)
665 if (TREE_CODE (expr
) != IDENTIFIER_NODE
)
666 TREE_TYPE (expr
) = stream_read_tree (ib
, data_in
);
670 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
671 block IB. DATA_IN contains tables and descriptors for the
675 lto_input_ts_vector_tree_pointers (struct lto_input_block
*ib
,
676 struct data_in
*data_in
, tree expr
)
679 for (i
= 0; i
< VECTOR_CST_NELTS (expr
); ++i
)
680 VECTOR_CST_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
684 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
685 block IB. DATA_IN contains tables and descriptors for the
689 lto_input_ts_complex_tree_pointers (struct lto_input_block
*ib
,
690 struct data_in
*data_in
, tree expr
)
692 TREE_REALPART (expr
) = stream_read_tree (ib
, data_in
);
693 TREE_IMAGPART (expr
) = stream_read_tree (ib
, data_in
);
697 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
698 from input block IB. DATA_IN contains tables and descriptors for the
702 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block
*ib
,
703 struct data_in
*data_in
, tree expr
)
705 DECL_NAME (expr
) = stream_read_tree (ib
, data_in
);
706 DECL_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
710 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
711 input block IB. DATA_IN contains tables and descriptors for the
715 lto_input_ts_decl_common_tree_pointers (struct lto_input_block
*ib
,
716 struct data_in
*data_in
, tree expr
)
718 DECL_SIZE (expr
) = stream_read_tree (ib
, data_in
);
719 DECL_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
720 DECL_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
722 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
723 for early inlining so drop it on the floor instead of ICEing in
726 if ((TREE_CODE (expr
) == VAR_DECL
727 || TREE_CODE (expr
) == PARM_DECL
)
728 && DECL_HAS_VALUE_EXPR_P (expr
))
729 SET_DECL_VALUE_EXPR (expr
, stream_read_tree (ib
, data_in
));
731 if (TREE_CODE (expr
) == VAR_DECL
)
733 tree dexpr
= stream_read_tree (ib
, data_in
);
735 SET_DECL_DEBUG_EXPR (expr
, dexpr
);
740 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
741 EXPR from input block IB. DATA_IN contains tables and descriptors for the
745 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block
*ib
,
746 struct data_in
*data_in
, tree expr
)
748 if (TREE_CODE (expr
) == TYPE_DECL
)
749 DECL_ORIGINAL_TYPE (expr
) = stream_read_tree (ib
, data_in
);
753 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
754 from input block IB. DATA_IN contains tables and descriptors for the
758 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block
*ib
,
759 struct data_in
*data_in
, tree expr
)
763 id
= stream_read_tree (ib
, data_in
);
766 gcc_assert (TREE_CODE (id
) == IDENTIFIER_NODE
);
767 SET_DECL_ASSEMBLER_NAME (expr
, id
);
772 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
773 input block IB. DATA_IN contains tables and descriptors for the
777 lto_input_ts_field_decl_tree_pointers (struct lto_input_block
*ib
,
778 struct data_in
*data_in
, tree expr
)
780 DECL_FIELD_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
781 DECL_BIT_FIELD_TYPE (expr
) = stream_read_tree (ib
, data_in
);
782 DECL_BIT_FIELD_REPRESENTATIVE (expr
) = stream_read_tree (ib
, data_in
);
783 DECL_FIELD_BIT_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
784 DECL_FCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
788 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
789 from input block IB. DATA_IN contains tables and descriptors for the
793 lto_input_ts_function_decl_tree_pointers (struct lto_input_block
*ib
,
794 struct data_in
*data_in
, tree expr
)
796 DECL_VINDEX (expr
) = stream_read_tree (ib
, data_in
);
797 /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */
798 DECL_FUNCTION_PERSONALITY (expr
) = stream_read_tree (ib
, data_in
);
799 #ifndef ACCEL_COMPILER
800 DECL_FUNCTION_SPECIFIC_TARGET (expr
) = stream_read_tree (ib
, data_in
);
802 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr
) = stream_read_tree (ib
, data_in
);
804 /* If the file contains a function with an EH personality set,
805 then it was compiled with -fexceptions. In that case, initialize
806 the backend EH machinery. */
807 if (DECL_FUNCTION_PERSONALITY (expr
))
812 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
813 input block IB. DATA_IN contains tables and descriptors for the file
817 lto_input_ts_type_common_tree_pointers (struct lto_input_block
*ib
,
818 struct data_in
*data_in
, tree expr
)
820 TYPE_SIZE (expr
) = stream_read_tree (ib
, data_in
);
821 TYPE_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
822 TYPE_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
823 TYPE_NAME (expr
) = stream_read_tree (ib
, data_in
);
824 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
825 reconstructed during fixup. */
826 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
828 TYPE_MAIN_VARIANT (expr
) = stream_read_tree (ib
, data_in
);
829 TYPE_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
830 /* TYPE_CANONICAL gets re-computed during type merging. */
831 TYPE_CANONICAL (expr
) = NULL_TREE
;
832 TYPE_STUB_DECL (expr
) = stream_read_tree (ib
, data_in
);
835 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
836 from input block IB. DATA_IN contains tables and descriptors for the
840 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block
*ib
,
841 struct data_in
*data_in
,
844 if (TREE_CODE (expr
) == ENUMERAL_TYPE
)
845 TYPE_VALUES (expr
) = stream_read_tree (ib
, data_in
);
846 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
847 TYPE_DOMAIN (expr
) = stream_read_tree (ib
, data_in
);
848 else if (RECORD_OR_UNION_TYPE_P (expr
))
849 TYPE_FIELDS (expr
) = streamer_read_chain (ib
, data_in
);
850 else if (TREE_CODE (expr
) == FUNCTION_TYPE
851 || TREE_CODE (expr
) == METHOD_TYPE
)
852 TYPE_ARG_TYPES (expr
) = stream_read_tree (ib
, data_in
);
854 if (!POINTER_TYPE_P (expr
))
855 TYPE_MINVAL (expr
) = stream_read_tree (ib
, data_in
);
856 TYPE_MAXVAL (expr
) = stream_read_tree (ib
, data_in
);
857 if (RECORD_OR_UNION_TYPE_P (expr
))
858 TYPE_BINFO (expr
) = stream_read_tree (ib
, data_in
);
862 /* Read all pointer fields in the TS_LIST structure of EXPR from input
863 block IB. DATA_IN contains tables and descriptors for the
867 lto_input_ts_list_tree_pointers (struct lto_input_block
*ib
,
868 struct data_in
*data_in
, tree expr
)
870 TREE_PURPOSE (expr
) = stream_read_tree (ib
, data_in
);
871 TREE_VALUE (expr
) = stream_read_tree (ib
, data_in
);
872 TREE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
876 /* Read all pointer fields in the TS_VEC structure of EXPR from input
877 block IB. DATA_IN contains tables and descriptors for the
881 lto_input_ts_vec_tree_pointers (struct lto_input_block
*ib
,
882 struct data_in
*data_in
, tree expr
)
886 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
888 for (i
= 0; i
< TREE_VEC_LENGTH (expr
); i
++)
889 TREE_VEC_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
893 /* Read all pointer fields in the TS_EXP structure of EXPR from input
894 block IB. DATA_IN contains tables and descriptors for the
899 lto_input_ts_exp_tree_pointers (struct lto_input_block
*ib
,
900 struct data_in
*data_in
, tree expr
)
904 for (i
= 0; i
< TREE_OPERAND_LENGTH (expr
); i
++)
905 TREE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
907 TREE_SET_BLOCK (expr
, stream_read_tree (ib
, data_in
));
911 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
912 block IB. DATA_IN contains tables and descriptors for the
916 lto_input_ts_block_tree_pointers (struct lto_input_block
*ib
,
917 struct data_in
*data_in
, tree expr
)
919 BLOCK_VARS (expr
) = streamer_read_chain (ib
, data_in
);
921 BLOCK_SUPERCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
923 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
924 the limited cases we can handle - those that represent inlined
925 function scopes. For the rest them on the floor instead of ICEing in
927 BLOCK_ABSTRACT_ORIGIN (expr
) = stream_read_tree (ib
, data_in
);
928 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
929 for early inlined BLOCKs so drop it on the floor instead of ICEing in
932 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
935 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
936 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
937 stream the child relationship explicitly. */
938 if (BLOCK_SUPERCONTEXT (expr
)
939 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == BLOCK
)
941 BLOCK_CHAIN (expr
) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
));
942 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
)) = expr
;
945 /* The global block is rooted at the TU decl. Hook it here to
946 avoid the need to stream in this block during WPA time. */
947 else if (BLOCK_SUPERCONTEXT (expr
)
948 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == TRANSLATION_UNIT_DECL
)
949 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr
)) = expr
;
951 /* The function-level block is connected at the time we read in
952 function bodies for the same reason. */
956 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
957 block IB. DATA_IN contains tables and descriptors for the
961 lto_input_ts_binfo_tree_pointers (struct lto_input_block
*ib
,
962 struct data_in
*data_in
, tree expr
)
967 /* Note that the number of slots in EXPR was read in
968 streamer_alloc_tree when instantiating EXPR. However, the
969 vector is empty so we cannot rely on vec::length to know how many
970 elements to read. So, this list is emitted as a 0-terminated
971 list on the writer side. */
974 t
= stream_read_tree (ib
, data_in
);
976 BINFO_BASE_BINFOS (expr
)->quick_push (t
);
980 BINFO_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
981 BINFO_VTABLE (expr
) = stream_read_tree (ib
, data_in
);
982 BINFO_VPTR_FIELD (expr
) = stream_read_tree (ib
, data_in
);
984 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
985 unpacking the bitfield section. */
986 for (i
= 0; i
< vec_safe_length (BINFO_BASE_ACCESSES (expr
)); i
++)
988 tree a
= stream_read_tree (ib
, data_in
);
989 (*BINFO_BASE_ACCESSES (expr
))[i
] = a
;
991 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
992 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
996 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
997 input block IB. DATA_IN contains tables and descriptors for the
1001 lto_input_ts_constructor_tree_pointers (struct lto_input_block
*ib
,
1002 struct data_in
*data_in
, tree expr
)
1006 for (i
= 0; i
< CONSTRUCTOR_NELTS (expr
); i
++)
1009 e
.index
= stream_read_tree (ib
, data_in
);
1010 e
.value
= stream_read_tree (ib
, data_in
);
1011 (*CONSTRUCTOR_ELTS (expr
))[i
] = e
;
1016 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1017 input block IB. DATA_IN contains tables and descriptors for the
1021 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block
*ib
,
1022 struct data_in
*data_in
, tree expr
)
1026 for (i
= 0; i
< omp_clause_num_ops
[OMP_CLAUSE_CODE (expr
)]; i
++)
1027 OMP_CLAUSE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
1028 OMP_CLAUSE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
1032 /* Read all pointer fields in EXPR from input block IB. DATA_IN
1033 contains tables and descriptors for the file being read. */
1036 streamer_read_tree_body (struct lto_input_block
*ib
, struct data_in
*data_in
,
1039 enum tree_code code
;
1041 code
= TREE_CODE (expr
);
1043 if (CODE_CONTAINS_STRUCT (code
, TS_TYPED
))
1044 lto_input_ts_common_tree_pointers (ib
, data_in
, expr
);
1046 if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
1047 lto_input_ts_vector_tree_pointers (ib
, data_in
, expr
);
1049 if (CODE_CONTAINS_STRUCT (code
, TS_COMPLEX
))
1050 lto_input_ts_complex_tree_pointers (ib
, data_in
, expr
);
1052 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
1053 lto_input_ts_decl_minimal_tree_pointers (ib
, data_in
, expr
);
1055 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
1056 lto_input_ts_decl_common_tree_pointers (ib
, data_in
, expr
);
1058 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_NON_COMMON
))
1059 lto_input_ts_decl_non_common_tree_pointers (ib
, data_in
, expr
);
1061 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
1062 lto_input_ts_decl_with_vis_tree_pointers (ib
, data_in
, expr
);
1064 if (CODE_CONTAINS_STRUCT (code
, TS_FIELD_DECL
))
1065 lto_input_ts_field_decl_tree_pointers (ib
, data_in
, expr
);
1067 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
1068 lto_input_ts_function_decl_tree_pointers (ib
, data_in
, expr
);
1070 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
1071 lto_input_ts_type_common_tree_pointers (ib
, data_in
, expr
);
1073 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_NON_COMMON
))
1074 lto_input_ts_type_non_common_tree_pointers (ib
, data_in
, expr
);
1076 if (CODE_CONTAINS_STRUCT (code
, TS_LIST
))
1077 lto_input_ts_list_tree_pointers (ib
, data_in
, expr
);
1079 if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
1080 lto_input_ts_vec_tree_pointers (ib
, data_in
, expr
);
1082 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
1083 lto_input_ts_exp_tree_pointers (ib
, data_in
, expr
);
1085 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
1086 lto_input_ts_block_tree_pointers (ib
, data_in
, expr
);
1088 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
1089 lto_input_ts_binfo_tree_pointers (ib
, data_in
, expr
);
1091 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
1092 lto_input_ts_constructor_tree_pointers (ib
, data_in
, expr
);
1094 if (code
== OMP_CLAUSE
)
1095 lto_input_ts_omp_clause_tree_pointers (ib
, data_in
, expr
);
1099 /* Read an index IX from input block IB and return the tree node at
1100 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1103 streamer_get_pickled_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1105 unsigned HOST_WIDE_INT ix
;
1107 enum LTO_tags expected_tag
;
1109 ix
= streamer_read_uhwi (ib
);
1110 expected_tag
= streamer_read_enum (ib
, LTO_tags
, LTO_NUM_TAGS
);
1112 result
= streamer_tree_cache_get_tree (data_in
->reader_cache
, ix
);
1114 && TREE_CODE (result
) == lto_tag_to_tree_code (expected_tag
));
1120 /* Read a code and class from input block IB and return the
1121 corresponding builtin. DATA_IN is as in stream_read_tree. */
1124 streamer_get_builtin_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1126 enum built_in_class fclass
;
1127 enum built_in_function fcode
;
1128 const char *asmname
;
1131 fclass
= streamer_read_enum (ib
, built_in_class
, BUILT_IN_LAST
);
1132 gcc_assert (fclass
== BUILT_IN_NORMAL
|| fclass
== BUILT_IN_MD
);
1134 fcode
= (enum built_in_function
) streamer_read_uhwi (ib
);
1136 if (fclass
== BUILT_IN_NORMAL
)
1138 if (fcode
>= END_BUILTINS
)
1139 fatal_error ("machine independent builtin code out of range");
1140 result
= builtin_decl_explicit (fcode
);
1142 && fcode
> BEGIN_CHKP_BUILTINS
1143 && fcode
< END_CHKP_BUILTINS
)
1145 fcode
= (enum built_in_function
) (fcode
- BEGIN_CHKP_BUILTINS
- 1);
1146 result
= builtin_decl_explicit (fcode
);
1147 result
= chkp_maybe_clone_builtin_fndecl (result
);
1149 gcc_assert (result
);
1151 else if (fclass
== BUILT_IN_MD
)
1153 result
= targetm
.builtin_decl (fcode
, true);
1154 if (!result
|| result
== error_mark_node
)
1155 fatal_error ("target specific builtin not available");
1160 asmname
= streamer_read_string (data_in
, ib
);
1162 set_builtin_user_assembler_name (result
, asmname
);
1164 streamer_tree_cache_append (data_in
->reader_cache
, result
, 0);