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"
62 #include "gomp-constants.h"
65 /* Read a STRING_CST from the string table in DATA_IN using input
69 streamer_read_string_cst (struct data_in
*data_in
, struct lto_input_block
*ib
)
74 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
77 return build_string (len
, ptr
);
81 /* Read an IDENTIFIER from the string table in DATA_IN using input
85 input_identifier (struct data_in
*data_in
, struct lto_input_block
*ib
)
90 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
93 return get_identifier_with_length (ptr
, len
);
97 /* Read a chain of tree nodes from input block IB. DATA_IN contains
98 tables and descriptors for the file being read. */
101 streamer_read_chain (struct lto_input_block
*ib
, struct data_in
*data_in
)
103 tree first
, prev
, curr
;
105 /* The chain is written as NULL terminated list of trees. */
106 first
= prev
= NULL_TREE
;
109 curr
= stream_read_tree (ib
, data_in
);
111 TREE_CHAIN (prev
) = curr
;
123 /* Unpack all the non-pointer fields of the TS_BASE structure of
124 expression EXPR from bitpack BP. */
127 unpack_ts_base_value_fields (struct bitpack_d
*bp
, tree expr
)
129 /* Note that the code for EXPR has already been unpacked to create EXPR in
130 streamer_alloc_tree. */
133 TREE_SIDE_EFFECTS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
134 TREE_CONSTANT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
135 TREE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
137 /* TREE_PUBLIC is used on types to indicate that the type
138 has a TYPE_CACHED_VALUES vector. This is not streamed out,
139 so we skip it here. */
140 TREE_PUBLIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
143 bp_unpack_value (bp
, 4);
144 TREE_ADDRESSABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
145 TREE_THIS_VOLATILE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
147 DECL_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
148 else if (TYPE_P (expr
))
149 TYPE_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
151 bp_unpack_value (bp
, 1);
152 TREE_ASM_WRITTEN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
154 TYPE_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
156 TREE_NO_WARNING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
157 TREE_NOTHROW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
158 TREE_STATIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
159 if (TREE_CODE (expr
) != TREE_BINFO
)
160 TREE_PRIVATE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
161 TREE_PROTECTED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
162 TREE_DEPRECATED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
165 TYPE_SATURATING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
166 TYPE_ADDR_SPACE (expr
) = (unsigned) bp_unpack_value (bp
, 8);
168 else if (TREE_CODE (expr
) == SSA_NAME
)
169 SSA_NAME_IS_DEFAULT_DEF (expr
) = (unsigned) bp_unpack_value (bp
, 1);
171 bp_unpack_value (bp
, 1);
175 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
176 expression EXPR from bitpack BP. */
179 unpack_ts_int_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
182 for (i
= 0; i
< TREE_INT_CST_EXT_NUNITS (expr
); i
++)
183 TREE_INT_CST_ELT (expr
, i
) = bp_unpack_var_len_int (bp
);
187 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
188 expression EXPR from bitpack BP. */
191 unpack_ts_real_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
197 /* Clear all bits of the real value type so that we can later do
198 bitwise comparisons to see if two values are the same. */
199 memset (&r
, 0, sizeof r
);
200 r
.cl
= (unsigned) bp_unpack_value (bp
, 2);
201 r
.decimal
= (unsigned) bp_unpack_value (bp
, 1);
202 r
.sign
= (unsigned) bp_unpack_value (bp
, 1);
203 r
.signalling
= (unsigned) bp_unpack_value (bp
, 1);
204 r
.canonical
= (unsigned) bp_unpack_value (bp
, 1);
205 r
.uexp
= (unsigned) bp_unpack_value (bp
, EXP_BITS
);
206 for (i
= 0; i
< SIGSZ
; i
++)
207 r
.sig
[i
] = (unsigned long) bp_unpack_value (bp
, HOST_BITS_PER_LONG
);
209 rp
= ggc_alloc
<real_value
> ();
210 memcpy (rp
, &r
, sizeof (REAL_VALUE_TYPE
));
211 TREE_REAL_CST_PTR (expr
) = rp
;
215 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
216 expression EXPR from bitpack BP. */
219 unpack_ts_fixed_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
221 FIXED_VALUE_TYPE
*fp
= ggc_alloc
<fixed_value
> ();
222 fp
->mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
223 fp
->data
.low
= bp_unpack_var_len_int (bp
);
224 fp
->data
.high
= bp_unpack_var_len_int (bp
);
225 TREE_FIXED_CST_PTR (expr
) = fp
;
228 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
229 of expression EXPR from bitpack BP. */
232 unpack_ts_decl_common_value_fields (struct bitpack_d
*bp
, tree expr
)
234 DECL_MODE (expr
) = bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
235 DECL_NONLOCAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
236 DECL_VIRTUAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
237 DECL_IGNORED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
238 DECL_ABSTRACT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
239 DECL_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
240 DECL_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
241 DECL_PRESERVE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
242 DECL_EXTERNAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
243 DECL_GIMPLE_REG_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
244 DECL_ALIGN (expr
) = (unsigned) bp_unpack_var_len_unsigned (bp
);
246 if (TREE_CODE (expr
) == LABEL_DECL
)
248 EH_LANDING_PAD_NR (expr
) = (int) bp_unpack_var_len_unsigned (bp
);
250 /* Always assume an initial value of -1 for LABEL_DECL_UID to
251 force gimple_set_bb to recreate label_to_block_map. */
252 LABEL_DECL_UID (expr
) = -1;
255 if (TREE_CODE (expr
) == FIELD_DECL
)
257 DECL_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
258 DECL_NONADDRESSABLE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
259 expr
->decl_common
.off_align
= bp_unpack_value (bp
, 8);
262 if (TREE_CODE (expr
) == VAR_DECL
)
264 DECL_HAS_DEBUG_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
265 DECL_NONLOCAL_FRAME (expr
) = (unsigned) bp_unpack_value (bp
, 1);
268 if (TREE_CODE (expr
) == RESULT_DECL
269 || TREE_CODE (expr
) == PARM_DECL
270 || TREE_CODE (expr
) == VAR_DECL
)
272 DECL_BY_REFERENCE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
273 if (TREE_CODE (expr
) == VAR_DECL
274 || TREE_CODE (expr
) == PARM_DECL
)
275 DECL_HAS_VALUE_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
280 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
281 of expression EXPR from bitpack BP. */
284 unpack_ts_decl_wrtl_value_fields (struct bitpack_d
*bp
, tree expr
)
286 DECL_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
290 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
291 of expression EXPR from bitpack BP. */
294 unpack_ts_decl_with_vis_value_fields (struct bitpack_d
*bp
, tree expr
)
296 DECL_COMMON (expr
) = (unsigned) bp_unpack_value (bp
, 1);
297 DECL_DLLIMPORT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
298 DECL_WEAK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
299 DECL_SEEN_IN_BIND_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
300 DECL_COMDAT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
301 DECL_VISIBILITY (expr
) = (enum symbol_visibility
) bp_unpack_value (bp
, 2);
302 DECL_VISIBILITY_SPECIFIED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
304 if (TREE_CODE (expr
) == VAR_DECL
)
306 DECL_HARD_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
307 DECL_IN_CONSTANT_POOL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
310 if (TREE_CODE (expr
) == FUNCTION_DECL
)
312 DECL_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
313 DECL_CXX_CONSTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
314 DECL_CXX_DESTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
319 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
320 of expression EXPR from bitpack BP. */
323 unpack_ts_function_decl_value_fields (struct bitpack_d
*bp
, tree expr
)
325 DECL_BUILT_IN_CLASS (expr
) = bp_unpack_enum (bp
, built_in_class
,
327 DECL_STATIC_CONSTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
328 DECL_STATIC_DESTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
329 DECL_UNINLINABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
330 DECL_POSSIBLY_INLINED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
331 DECL_IS_NOVOPS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
332 DECL_IS_RETURNS_TWICE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
333 DECL_IS_MALLOC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
334 DECL_IS_OPERATOR_NEW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
335 DECL_DECLARED_INLINE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
336 DECL_STATIC_CHAIN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
337 DECL_NO_INLINE_WARNING_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
338 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr
)
339 = (unsigned) bp_unpack_value (bp
, 1);
340 DECL_NO_LIMIT_STACK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
341 DECL_DISREGARD_INLINE_LIMITS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
342 DECL_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
343 DECL_LOOPING_CONST_OR_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
344 if (DECL_BUILT_IN_CLASS (expr
) != NOT_BUILT_IN
)
346 DECL_FUNCTION_CODE (expr
) = (enum built_in_function
) bp_unpack_value (bp
,
348 if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_NORMAL
349 && DECL_FUNCTION_CODE (expr
) >= END_BUILTINS
)
350 fatal_error ("machine independent builtin code out of range");
351 else if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_MD
)
353 tree result
= targetm
.builtin_decl (DECL_FUNCTION_CODE (expr
), true);
354 if (!result
|| result
== error_mark_node
)
355 fatal_error ("target specific builtin not available");
361 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
362 of expression EXPR from bitpack BP. */
365 unpack_ts_type_common_value_fields (struct bitpack_d
*bp
, tree expr
)
369 mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
370 SET_TYPE_MODE (expr
, mode
);
371 TYPE_STRING_FLAG (expr
) = (unsigned) bp_unpack_value (bp
, 1);
372 TYPE_NO_FORCE_BLK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
373 TYPE_NEEDS_CONSTRUCTING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
374 if (RECORD_OR_UNION_TYPE_P (expr
))
376 TYPE_TRANSPARENT_AGGR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
377 TYPE_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
379 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
380 TYPE_NONALIASED_COMPONENT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
381 TYPE_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
382 TYPE_RESTRICT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
383 TYPE_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
384 TYPE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
385 TYPE_PRECISION (expr
) = bp_unpack_var_len_unsigned (bp
);
386 TYPE_ALIGN (expr
) = bp_unpack_var_len_unsigned (bp
);
387 TYPE_ALIAS_SET (expr
) = bp_unpack_var_len_int (bp
);
391 /* Unpack all the non-pointer fields of the TS_BLOCK structure
392 of expression EXPR from bitpack BP. */
395 unpack_ts_block_value_fields (struct data_in
*data_in
,
396 struct bitpack_d
*bp
, tree expr
)
398 BLOCK_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
399 /* BLOCK_NUMBER is recomputed. */
400 BLOCK_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
403 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
404 structure of expression EXPR from bitpack BP. */
407 unpack_ts_translation_unit_decl_value_fields (struct data_in
*data_in
,
408 struct bitpack_d
*bp
, tree expr
)
410 TRANSLATION_UNIT_LANGUAGE (expr
) = xstrdup (bp_unpack_string (data_in
, bp
));
411 vec_safe_push (all_translation_units
, expr
);
415 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
416 structure of expression EXPR from bitpack BP. */
419 unpack_ts_omp_clause_value_fields (struct data_in
*data_in
,
420 struct bitpack_d
*bp
, tree expr
)
422 OMP_CLAUSE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
423 switch (OMP_CLAUSE_CODE (expr
))
425 case OMP_CLAUSE_DEFAULT
:
426 OMP_CLAUSE_DEFAULT_KIND (expr
)
427 = bp_unpack_enum (bp
, omp_clause_default_kind
,
428 OMP_CLAUSE_DEFAULT_LAST
);
430 case OMP_CLAUSE_SCHEDULE
:
431 OMP_CLAUSE_SCHEDULE_KIND (expr
)
432 = bp_unpack_enum (bp
, omp_clause_schedule_kind
,
433 OMP_CLAUSE_SCHEDULE_LAST
);
435 case OMP_CLAUSE_DEPEND
:
436 OMP_CLAUSE_DEPEND_KIND (expr
)
437 = bp_unpack_enum (bp
, omp_clause_depend_kind
, OMP_CLAUSE_DEPEND_LAST
);
440 OMP_CLAUSE_SET_MAP_KIND (expr
, bp_unpack_enum (bp
, gomp_map_kind
,
443 case OMP_CLAUSE_PROC_BIND
:
444 OMP_CLAUSE_PROC_BIND_KIND (expr
)
445 = bp_unpack_enum (bp
, omp_clause_proc_bind_kind
,
446 OMP_CLAUSE_PROC_BIND_LAST
);
448 case OMP_CLAUSE_REDUCTION
:
449 OMP_CLAUSE_REDUCTION_CODE (expr
)
450 = bp_unpack_enum (bp
, tree_code
, MAX_TREE_CODES
);
457 /* Unpack all the non-pointer fields in EXPR into a bit pack. */
460 unpack_value_fields (struct data_in
*data_in
, struct bitpack_d
*bp
, tree expr
)
464 code
= TREE_CODE (expr
);
466 /* Note that all these functions are highly sensitive to changes in
467 the types and sizes of each of the fields being packed. */
468 unpack_ts_base_value_fields (bp
, expr
);
470 if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
471 unpack_ts_int_cst_value_fields (bp
, expr
);
473 if (CODE_CONTAINS_STRUCT (code
, TS_REAL_CST
))
474 unpack_ts_real_cst_value_fields (bp
, expr
);
476 if (CODE_CONTAINS_STRUCT (code
, TS_FIXED_CST
))
477 unpack_ts_fixed_cst_value_fields (bp
, expr
);
479 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
480 DECL_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
482 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
483 unpack_ts_decl_common_value_fields (bp
, expr
);
485 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WRTL
))
486 unpack_ts_decl_wrtl_value_fields (bp
, expr
);
488 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
489 unpack_ts_decl_with_vis_value_fields (bp
, expr
);
491 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
492 unpack_ts_function_decl_value_fields (bp
, expr
);
494 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
495 unpack_ts_type_common_value_fields (bp
, expr
);
497 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
499 SET_EXPR_LOCATION (expr
, stream_input_location (bp
, data_in
));
501 || code
== TARGET_MEM_REF
)
503 MR_DEPENDENCE_CLIQUE (expr
)
504 = (unsigned)bp_unpack_value (bp
, sizeof (short) * 8);
505 if (MR_DEPENDENCE_CLIQUE (expr
) != 0)
506 MR_DEPENDENCE_BASE (expr
)
507 = (unsigned)bp_unpack_value (bp
, sizeof (short) * 8);
511 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
512 unpack_ts_block_value_fields (data_in
, bp
, expr
);
514 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
515 unpack_ts_translation_unit_decl_value_fields (data_in
, bp
, expr
);
517 if (CODE_CONTAINS_STRUCT (code
, TS_OPTIMIZATION
))
518 cl_optimization_stream_in (bp
, TREE_OPTIMIZATION (expr
));
520 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
522 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
524 vec_safe_grow (BINFO_BASE_ACCESSES (expr
), length
);
527 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
529 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
531 vec_safe_grow (CONSTRUCTOR_ELTS (expr
), length
);
534 #ifndef ACCEL_COMPILER
535 if (CODE_CONTAINS_STRUCT (code
, TS_TARGET_OPTION
))
536 cl_target_option_stream_in (data_in
, bp
, TREE_TARGET_OPTION (expr
));
539 if (code
== OMP_CLAUSE
)
540 unpack_ts_omp_clause_value_fields (data_in
, bp
, expr
);
544 /* Read all the language-independent bitfield values for EXPR from IB.
545 Return the partially unpacked bitpack so the caller can unpack any other
546 bitfield values that the writer may have written. */
549 streamer_read_tree_bitfields (struct lto_input_block
*ib
,
550 struct data_in
*data_in
, tree expr
)
555 /* Read the bitpack of non-pointer values from IB. */
556 bp
= streamer_read_bitpack (ib
);
558 /* The first word in BP contains the code of the tree that we
559 are about to read. */
560 code
= (enum tree_code
) bp_unpack_value (&bp
, 16);
561 lto_tag_check (lto_tree_code_to_tag (code
),
562 lto_tree_code_to_tag (TREE_CODE (expr
)));
564 /* Unpack all the value fields from BP. */
565 unpack_value_fields (data_in
, &bp
, expr
);
571 /* Materialize a new tree from input block IB using descriptors in
572 DATA_IN. The code for the new tree should match TAG. Store in
573 *IX_P the index into the reader cache where the new tree is stored. */
576 streamer_alloc_tree (struct lto_input_block
*ib
, struct data_in
*data_in
,
581 #ifdef LTO_STREAMER_DEBUG
582 HOST_WIDE_INT orig_address_in_writer
;
587 #ifdef LTO_STREAMER_DEBUG
588 /* Read the word representing the memory address for the tree
589 as it was written by the writer. This is useful when
590 debugging differences between the writer and reader. */
591 orig_address_in_writer
= streamer_read_hwi (ib
);
592 gcc_assert ((intptr_t) orig_address_in_writer
== orig_address_in_writer
);
595 code
= lto_tag_to_tree_code (tag
);
597 /* We should never see an SSA_NAME tree. Only the version numbers of
598 SSA names are ever written out. See input_ssa_names. */
599 gcc_assert (code
!= SSA_NAME
);
601 /* Instantiate a new tree using the header data. */
602 if (CODE_CONTAINS_STRUCT (code
, TS_STRING
))
603 result
= streamer_read_string_cst (data_in
, ib
);
604 else if (CODE_CONTAINS_STRUCT (code
, TS_IDENTIFIER
))
605 result
= input_identifier (data_in
, ib
);
606 else if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
608 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
609 result
= make_tree_vec (len
);
611 else if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
613 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
614 result
= make_vector (len
);
616 else if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
618 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
619 result
= make_tree_binfo (len
);
621 else if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
623 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
624 unsigned HOST_WIDE_INT ext_len
= streamer_read_uhwi (ib
);
625 result
= make_int_cst (len
, ext_len
);
627 else if (code
== CALL_EXPR
)
629 unsigned HOST_WIDE_INT nargs
= streamer_read_uhwi (ib
);
630 return build_vl_exp (CALL_EXPR
, nargs
+ 3);
632 else if (code
== OMP_CLAUSE
)
634 enum omp_clause_code subcode
635 = (enum omp_clause_code
) streamer_read_uhwi (ib
);
636 return build_omp_clause (UNKNOWN_LOCATION
, subcode
);
640 /* For all other nodes, materialize the tree with a raw
642 result
= make_node (code
);
645 #ifdef LTO_STREAMER_DEBUG
646 /* Store the original address of the tree as seen by the writer
647 in RESULT's aux field. This is useful when debugging streaming
648 problems. This way, a debugging session can be started on
649 both writer and reader with a breakpoint using this address
651 lto_orig_address_map (result
, (intptr_t) orig_address_in_writer
);
658 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
659 block IB. DATA_IN contains tables and descriptors for the
664 lto_input_ts_common_tree_pointers (struct lto_input_block
*ib
,
665 struct data_in
*data_in
, tree expr
)
667 if (TREE_CODE (expr
) != IDENTIFIER_NODE
)
668 TREE_TYPE (expr
) = stream_read_tree (ib
, data_in
);
672 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
673 block IB. DATA_IN contains tables and descriptors for the
677 lto_input_ts_vector_tree_pointers (struct lto_input_block
*ib
,
678 struct data_in
*data_in
, tree expr
)
681 for (i
= 0; i
< VECTOR_CST_NELTS (expr
); ++i
)
682 VECTOR_CST_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
686 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
687 block IB. DATA_IN contains tables and descriptors for the
691 lto_input_ts_complex_tree_pointers (struct lto_input_block
*ib
,
692 struct data_in
*data_in
, tree expr
)
694 TREE_REALPART (expr
) = stream_read_tree (ib
, data_in
);
695 TREE_IMAGPART (expr
) = stream_read_tree (ib
, data_in
);
699 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
700 from input block IB. DATA_IN contains tables and descriptors for the
704 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block
*ib
,
705 struct data_in
*data_in
, tree expr
)
707 DECL_NAME (expr
) = stream_read_tree (ib
, data_in
);
708 DECL_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
712 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
713 input block IB. DATA_IN contains tables and descriptors for the
717 lto_input_ts_decl_common_tree_pointers (struct lto_input_block
*ib
,
718 struct data_in
*data_in
, tree expr
)
720 DECL_SIZE (expr
) = stream_read_tree (ib
, data_in
);
721 DECL_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
722 DECL_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
724 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
725 for early inlining so drop it on the floor instead of ICEing in
728 if ((TREE_CODE (expr
) == VAR_DECL
729 || TREE_CODE (expr
) == PARM_DECL
)
730 && DECL_HAS_VALUE_EXPR_P (expr
))
731 SET_DECL_VALUE_EXPR (expr
, stream_read_tree (ib
, data_in
));
733 if (TREE_CODE (expr
) == VAR_DECL
)
735 tree dexpr
= stream_read_tree (ib
, data_in
);
737 SET_DECL_DEBUG_EXPR (expr
, dexpr
);
742 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
743 EXPR from input block IB. DATA_IN contains tables and descriptors for the
747 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block
*ib
,
748 struct data_in
*data_in
, tree expr
)
750 if (TREE_CODE (expr
) == TYPE_DECL
)
751 DECL_ORIGINAL_TYPE (expr
) = stream_read_tree (ib
, data_in
);
755 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
756 from input block IB. DATA_IN contains tables and descriptors for the
760 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block
*ib
,
761 struct data_in
*data_in
, tree expr
)
765 id
= stream_read_tree (ib
, data_in
);
768 gcc_assert (TREE_CODE (id
) == IDENTIFIER_NODE
);
769 SET_DECL_ASSEMBLER_NAME (expr
, id
);
774 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
775 input block IB. DATA_IN contains tables and descriptors for the
779 lto_input_ts_field_decl_tree_pointers (struct lto_input_block
*ib
,
780 struct data_in
*data_in
, tree expr
)
782 DECL_FIELD_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
783 DECL_BIT_FIELD_TYPE (expr
) = stream_read_tree (ib
, data_in
);
784 DECL_BIT_FIELD_REPRESENTATIVE (expr
) = stream_read_tree (ib
, data_in
);
785 DECL_FIELD_BIT_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
786 DECL_FCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
790 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
791 from input block IB. DATA_IN contains tables and descriptors for the
795 lto_input_ts_function_decl_tree_pointers (struct lto_input_block
*ib
,
796 struct data_in
*data_in
, tree expr
)
798 DECL_VINDEX (expr
) = stream_read_tree (ib
, data_in
);
799 /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */
800 DECL_FUNCTION_PERSONALITY (expr
) = stream_read_tree (ib
, data_in
);
801 #ifndef ACCEL_COMPILER
802 DECL_FUNCTION_SPECIFIC_TARGET (expr
) = stream_read_tree (ib
, data_in
);
804 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr
) = stream_read_tree (ib
, data_in
);
806 /* If the file contains a function with an EH personality set,
807 then it was compiled with -fexceptions. In that case, initialize
808 the backend EH machinery. */
809 if (DECL_FUNCTION_PERSONALITY (expr
))
814 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
815 input block IB. DATA_IN contains tables and descriptors for the file
819 lto_input_ts_type_common_tree_pointers (struct lto_input_block
*ib
,
820 struct data_in
*data_in
, tree expr
)
822 TYPE_SIZE (expr
) = stream_read_tree (ib
, data_in
);
823 TYPE_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
824 TYPE_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
825 TYPE_NAME (expr
) = stream_read_tree (ib
, data_in
);
826 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
827 reconstructed during fixup. */
828 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
830 TYPE_MAIN_VARIANT (expr
) = stream_read_tree (ib
, data_in
);
831 TYPE_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
832 /* TYPE_CANONICAL gets re-computed during type merging. */
833 TYPE_CANONICAL (expr
) = NULL_TREE
;
834 TYPE_STUB_DECL (expr
) = stream_read_tree (ib
, data_in
);
837 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
838 from input block IB. DATA_IN contains tables and descriptors for the
842 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block
*ib
,
843 struct data_in
*data_in
,
846 if (TREE_CODE (expr
) == ENUMERAL_TYPE
)
847 TYPE_VALUES (expr
) = stream_read_tree (ib
, data_in
);
848 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
849 TYPE_DOMAIN (expr
) = stream_read_tree (ib
, data_in
);
850 else if (RECORD_OR_UNION_TYPE_P (expr
))
851 TYPE_FIELDS (expr
) = streamer_read_chain (ib
, data_in
);
852 else if (TREE_CODE (expr
) == FUNCTION_TYPE
853 || TREE_CODE (expr
) == METHOD_TYPE
)
854 TYPE_ARG_TYPES (expr
) = stream_read_tree (ib
, data_in
);
856 if (!POINTER_TYPE_P (expr
))
857 TYPE_MINVAL (expr
) = stream_read_tree (ib
, data_in
);
858 TYPE_MAXVAL (expr
) = stream_read_tree (ib
, data_in
);
859 if (RECORD_OR_UNION_TYPE_P (expr
))
860 TYPE_BINFO (expr
) = stream_read_tree (ib
, data_in
);
864 /* Read all pointer fields in the TS_LIST structure of EXPR from input
865 block IB. DATA_IN contains tables and descriptors for the
869 lto_input_ts_list_tree_pointers (struct lto_input_block
*ib
,
870 struct data_in
*data_in
, tree expr
)
872 TREE_PURPOSE (expr
) = stream_read_tree (ib
, data_in
);
873 TREE_VALUE (expr
) = stream_read_tree (ib
, data_in
);
874 TREE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
878 /* Read all pointer fields in the TS_VEC structure of EXPR from input
879 block IB. DATA_IN contains tables and descriptors for the
883 lto_input_ts_vec_tree_pointers (struct lto_input_block
*ib
,
884 struct data_in
*data_in
, tree expr
)
888 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
890 for (i
= 0; i
< TREE_VEC_LENGTH (expr
); i
++)
891 TREE_VEC_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
895 /* Read all pointer fields in the TS_EXP structure of EXPR from input
896 block IB. DATA_IN contains tables and descriptors for the
901 lto_input_ts_exp_tree_pointers (struct lto_input_block
*ib
,
902 struct data_in
*data_in
, tree expr
)
906 for (i
= 0; i
< TREE_OPERAND_LENGTH (expr
); i
++)
907 TREE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
909 TREE_SET_BLOCK (expr
, stream_read_tree (ib
, data_in
));
913 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
914 block IB. DATA_IN contains tables and descriptors for the
918 lto_input_ts_block_tree_pointers (struct lto_input_block
*ib
,
919 struct data_in
*data_in
, tree expr
)
921 BLOCK_VARS (expr
) = streamer_read_chain (ib
, data_in
);
923 BLOCK_SUPERCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
925 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
926 the limited cases we can handle - those that represent inlined
927 function scopes. For the rest them on the floor instead of ICEing in
929 BLOCK_ABSTRACT_ORIGIN (expr
) = stream_read_tree (ib
, data_in
);
930 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
931 for early inlined BLOCKs so drop it on the floor instead of ICEing in
934 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
937 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
938 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
939 stream the child relationship explicitly. */
940 if (BLOCK_SUPERCONTEXT (expr
)
941 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == BLOCK
)
943 BLOCK_CHAIN (expr
) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
));
944 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
)) = expr
;
947 /* The global block is rooted at the TU decl. Hook it here to
948 avoid the need to stream in this block during WPA time. */
949 else if (BLOCK_SUPERCONTEXT (expr
)
950 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == TRANSLATION_UNIT_DECL
)
951 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr
)) = expr
;
953 /* The function-level block is connected at the time we read in
954 function bodies for the same reason. */
958 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
959 block IB. DATA_IN contains tables and descriptors for the
963 lto_input_ts_binfo_tree_pointers (struct lto_input_block
*ib
,
964 struct data_in
*data_in
, tree expr
)
969 /* Note that the number of slots in EXPR was read in
970 streamer_alloc_tree when instantiating EXPR. However, the
971 vector is empty so we cannot rely on vec::length to know how many
972 elements to read. So, this list is emitted as a 0-terminated
973 list on the writer side. */
976 t
= stream_read_tree (ib
, data_in
);
978 BINFO_BASE_BINFOS (expr
)->quick_push (t
);
982 BINFO_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
983 BINFO_VTABLE (expr
) = stream_read_tree (ib
, data_in
);
984 BINFO_VPTR_FIELD (expr
) = stream_read_tree (ib
, data_in
);
986 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
987 unpacking the bitfield section. */
988 for (i
= 0; i
< vec_safe_length (BINFO_BASE_ACCESSES (expr
)); i
++)
990 tree a
= stream_read_tree (ib
, data_in
);
991 (*BINFO_BASE_ACCESSES (expr
))[i
] = a
;
993 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
994 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
998 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
999 input block IB. DATA_IN contains tables and descriptors for the
1003 lto_input_ts_constructor_tree_pointers (struct lto_input_block
*ib
,
1004 struct data_in
*data_in
, tree expr
)
1008 for (i
= 0; i
< CONSTRUCTOR_NELTS (expr
); i
++)
1011 e
.index
= stream_read_tree (ib
, data_in
);
1012 e
.value
= stream_read_tree (ib
, data_in
);
1013 (*CONSTRUCTOR_ELTS (expr
))[i
] = e
;
1018 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1019 input block IB. DATA_IN contains tables and descriptors for the
1023 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block
*ib
,
1024 struct data_in
*data_in
, tree expr
)
1028 for (i
= 0; i
< omp_clause_num_ops
[OMP_CLAUSE_CODE (expr
)]; i
++)
1029 OMP_CLAUSE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
1030 OMP_CLAUSE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
1034 /* Read all pointer fields in EXPR from input block IB. DATA_IN
1035 contains tables and descriptors for the file being read. */
1038 streamer_read_tree_body (struct lto_input_block
*ib
, struct data_in
*data_in
,
1041 enum tree_code code
;
1043 code
= TREE_CODE (expr
);
1045 if (CODE_CONTAINS_STRUCT (code
, TS_TYPED
))
1046 lto_input_ts_common_tree_pointers (ib
, data_in
, expr
);
1048 if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
1049 lto_input_ts_vector_tree_pointers (ib
, data_in
, expr
);
1051 if (CODE_CONTAINS_STRUCT (code
, TS_COMPLEX
))
1052 lto_input_ts_complex_tree_pointers (ib
, data_in
, expr
);
1054 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
1055 lto_input_ts_decl_minimal_tree_pointers (ib
, data_in
, expr
);
1057 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
1058 lto_input_ts_decl_common_tree_pointers (ib
, data_in
, expr
);
1060 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_NON_COMMON
))
1061 lto_input_ts_decl_non_common_tree_pointers (ib
, data_in
, expr
);
1063 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
1064 lto_input_ts_decl_with_vis_tree_pointers (ib
, data_in
, expr
);
1066 if (CODE_CONTAINS_STRUCT (code
, TS_FIELD_DECL
))
1067 lto_input_ts_field_decl_tree_pointers (ib
, data_in
, expr
);
1069 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
1070 lto_input_ts_function_decl_tree_pointers (ib
, data_in
, expr
);
1072 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
1073 lto_input_ts_type_common_tree_pointers (ib
, data_in
, expr
);
1075 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_NON_COMMON
))
1076 lto_input_ts_type_non_common_tree_pointers (ib
, data_in
, expr
);
1078 if (CODE_CONTAINS_STRUCT (code
, TS_LIST
))
1079 lto_input_ts_list_tree_pointers (ib
, data_in
, expr
);
1081 if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
1082 lto_input_ts_vec_tree_pointers (ib
, data_in
, expr
);
1084 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
1085 lto_input_ts_exp_tree_pointers (ib
, data_in
, expr
);
1087 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
1088 lto_input_ts_block_tree_pointers (ib
, data_in
, expr
);
1090 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
1091 lto_input_ts_binfo_tree_pointers (ib
, data_in
, expr
);
1093 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
1094 lto_input_ts_constructor_tree_pointers (ib
, data_in
, expr
);
1096 if (code
== OMP_CLAUSE
)
1097 lto_input_ts_omp_clause_tree_pointers (ib
, data_in
, expr
);
1101 /* Read an index IX from input block IB and return the tree node at
1102 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1105 streamer_get_pickled_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1107 unsigned HOST_WIDE_INT ix
;
1109 enum LTO_tags expected_tag
;
1111 ix
= streamer_read_uhwi (ib
);
1112 expected_tag
= streamer_read_enum (ib
, LTO_tags
, LTO_NUM_TAGS
);
1114 result
= streamer_tree_cache_get_tree (data_in
->reader_cache
, ix
);
1116 && TREE_CODE (result
) == lto_tag_to_tree_code (expected_tag
));
1122 /* Read a code and class from input block IB and return the
1123 corresponding builtin. DATA_IN is as in stream_read_tree. */
1126 streamer_get_builtin_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1128 enum built_in_class fclass
;
1129 enum built_in_function fcode
;
1130 const char *asmname
;
1133 fclass
= streamer_read_enum (ib
, built_in_class
, BUILT_IN_LAST
);
1134 gcc_assert (fclass
== BUILT_IN_NORMAL
|| fclass
== BUILT_IN_MD
);
1136 fcode
= (enum built_in_function
) streamer_read_uhwi (ib
);
1138 if (fclass
== BUILT_IN_NORMAL
)
1140 if (fcode
>= END_BUILTINS
)
1141 fatal_error ("machine independent builtin code out of range");
1142 result
= builtin_decl_explicit (fcode
);
1144 && fcode
> BEGIN_CHKP_BUILTINS
1145 && fcode
< END_CHKP_BUILTINS
)
1147 fcode
= (enum built_in_function
) (fcode
- BEGIN_CHKP_BUILTINS
- 1);
1148 result
= builtin_decl_explicit (fcode
);
1149 result
= chkp_maybe_clone_builtin_fndecl (result
);
1151 gcc_assert (result
);
1153 else if (fclass
== BUILT_IN_MD
)
1155 result
= targetm
.builtin_decl (fcode
, true);
1156 if (!result
|| result
== error_mark_node
)
1157 fatal_error ("target specific builtin not available");
1162 asmname
= streamer_read_string (data_in
, ib
);
1164 set_builtin_user_assembler_name (result
, asmname
);
1166 streamer_tree_cache_append (data_in
->reader_cache
, result
, 0);