1 /* Routines for reading trees from a file stream.
3 Copyright 2011 Free Software Foundation, Inc.
4 Contributed by Diego Novillo <dnovillo@google.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
24 #include "coretypes.h"
25 #include "diagnostic.h"
27 #include "tree-flow.h"
28 #include "tree-streamer.h"
29 #include "data-streamer.h"
30 #include "streamer-hooks.h"
31 #include "lto-streamer.h"
33 /* Read a STRING_CST from the string table in DATA_IN using input
37 streamer_read_string_cst (struct data_in
*data_in
, struct lto_input_block
*ib
)
42 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
45 return build_string (len
, ptr
);
49 /* Read an IDENTIFIER from the string table in DATA_IN using input
53 input_identifier (struct data_in
*data_in
, struct lto_input_block
*ib
)
58 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
61 return get_identifier_with_length (ptr
, len
);
65 /* Read a chain of tree nodes from input block IB. DATA_IN contains
66 tables and descriptors for the file being read. */
69 streamer_read_chain (struct lto_input_block
*ib
, struct data_in
*data_in
)
72 tree first
, prev
, curr
;
74 first
= prev
= NULL_TREE
;
75 count
= streamer_read_hwi (ib
);
76 for (i
= 0; i
< count
; i
++)
78 curr
= stream_read_tree (ib
, data_in
);
80 TREE_CHAIN (prev
) = curr
;
84 TREE_CHAIN (curr
) = NULL_TREE
;
92 /* Unpack all the non-pointer fields of the TS_BASE structure of
93 expression EXPR from bitpack BP. */
96 unpack_ts_base_value_fields (struct bitpack_d
*bp
, tree expr
)
98 /* Note that the code for EXPR has already been unpacked to create EXPR in
99 streamer_alloc_tree. */
102 TREE_SIDE_EFFECTS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
103 TREE_CONSTANT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
104 TREE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
106 /* TREE_PUBLIC is used on types to indicate that the type
107 has a TYPE_CACHED_VALUES vector. This is not streamed out,
108 so we skip it here. */
109 TREE_PUBLIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
112 bp_unpack_value (bp
, 4);
113 TREE_ADDRESSABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
114 TREE_THIS_VOLATILE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
116 DECL_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
117 else if (TYPE_P (expr
))
118 TYPE_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
120 bp_unpack_value (bp
, 1);
121 TREE_ASM_WRITTEN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
123 TYPE_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
125 TREE_NO_WARNING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
126 TREE_USED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
127 TREE_NOTHROW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
128 TREE_STATIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
129 TREE_PRIVATE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
130 TREE_PROTECTED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
131 TREE_DEPRECATED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
134 TYPE_SATURATING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
135 TYPE_ADDR_SPACE (expr
) = (unsigned) bp_unpack_value (bp
, 8);
137 else if (TREE_CODE (expr
) == SSA_NAME
)
138 SSA_NAME_IS_DEFAULT_DEF (expr
) = (unsigned) bp_unpack_value (bp
, 1);
140 bp_unpack_value (bp
, 1);
144 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
145 expression EXPR from bitpack BP. */
148 unpack_ts_real_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
154 r
.cl
= (unsigned) bp_unpack_value (bp
, 2);
155 r
.decimal
= (unsigned) bp_unpack_value (bp
, 1);
156 r
.sign
= (unsigned) bp_unpack_value (bp
, 1);
157 r
.signalling
= (unsigned) bp_unpack_value (bp
, 1);
158 r
.canonical
= (unsigned) bp_unpack_value (bp
, 1);
159 r
.uexp
= (unsigned) bp_unpack_value (bp
, EXP_BITS
);
160 for (i
= 0; i
< SIGSZ
; i
++)
161 r
.sig
[i
] = (unsigned long) bp_unpack_value (bp
, HOST_BITS_PER_LONG
);
163 rp
= ggc_alloc_real_value ();
164 memcpy (rp
, &r
, sizeof (REAL_VALUE_TYPE
));
165 TREE_REAL_CST_PTR (expr
) = rp
;
169 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
170 expression EXPR from bitpack BP. */
173 unpack_ts_fixed_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
175 struct fixed_value fv
;
177 fv
.mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
178 fv
.data
.low
= bp_unpack_var_len_int (bp
);
179 fv
.data
.high
= bp_unpack_var_len_int (bp
);
180 TREE_FIXED_CST (expr
) = fv
;
184 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
185 of expression EXPR from bitpack BP. */
188 unpack_ts_decl_common_value_fields (struct bitpack_d
*bp
, tree expr
)
190 DECL_MODE (expr
) = bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
191 DECL_NONLOCAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
192 DECL_VIRTUAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
193 DECL_IGNORED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
194 DECL_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
195 DECL_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
196 DECL_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
197 DECL_PRESERVE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
198 DECL_DEBUG_EXPR_IS_FROM (expr
) = (unsigned) bp_unpack_value (bp
, 1);
199 DECL_EXTERNAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
200 DECL_GIMPLE_REG_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
201 DECL_ALIGN (expr
) = (unsigned) bp_unpack_var_len_unsigned (bp
);
203 if (TREE_CODE (expr
) == LABEL_DECL
)
205 DECL_ERROR_ISSUED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
206 EH_LANDING_PAD_NR (expr
) = (int) bp_unpack_var_len_unsigned (bp
);
208 /* Always assume an initial value of -1 for LABEL_DECL_UID to
209 force gimple_set_bb to recreate label_to_block_map. */
210 LABEL_DECL_UID (expr
) = -1;
213 if (TREE_CODE (expr
) == FIELD_DECL
)
215 DECL_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
216 DECL_NONADDRESSABLE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
217 expr
->decl_common
.off_align
= bp_unpack_value (bp
, 8);
220 if (TREE_CODE (expr
) == RESULT_DECL
221 || TREE_CODE (expr
) == PARM_DECL
222 || TREE_CODE (expr
) == VAR_DECL
)
224 DECL_BY_REFERENCE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
225 if (TREE_CODE (expr
) == VAR_DECL
226 || TREE_CODE (expr
) == PARM_DECL
)
227 DECL_HAS_VALUE_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
228 DECL_RESTRICTED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
233 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
234 of expression EXPR from bitpack BP. */
237 unpack_ts_decl_wrtl_value_fields (struct bitpack_d
*bp
, tree expr
)
239 DECL_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
243 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
244 of expression EXPR from bitpack BP. */
247 unpack_ts_decl_with_vis_value_fields (struct bitpack_d
*bp
, tree expr
)
249 DECL_DEFER_OUTPUT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
250 DECL_COMMON (expr
) = (unsigned) bp_unpack_value (bp
, 1);
251 DECL_DLLIMPORT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
252 DECL_WEAK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
253 DECL_SEEN_IN_BIND_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
254 DECL_COMDAT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
255 DECL_VISIBILITY (expr
) = (enum symbol_visibility
) bp_unpack_value (bp
, 2);
256 DECL_VISIBILITY_SPECIFIED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
258 if (TREE_CODE (expr
) == VAR_DECL
)
260 DECL_HARD_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
261 DECL_IN_TEXT_SECTION (expr
) = (unsigned) bp_unpack_value (bp
, 1);
262 DECL_IN_CONSTANT_POOL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
263 DECL_TLS_MODEL (expr
) = (enum tls_model
) bp_unpack_value (bp
, 3);
266 if (VAR_OR_FUNCTION_DECL_P (expr
))
269 p
= (priority_type
) bp_unpack_var_len_unsigned (bp
);
270 SET_DECL_INIT_PRIORITY (expr
, p
);
275 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
276 of expression EXPR from bitpack BP. */
279 unpack_ts_function_decl_value_fields (struct bitpack_d
*bp
, tree expr
)
281 DECL_BUILT_IN_CLASS (expr
) = bp_unpack_enum (bp
, built_in_class
,
283 DECL_STATIC_CONSTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
284 DECL_STATIC_DESTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
285 DECL_UNINLINABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
286 DECL_POSSIBLY_INLINED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
287 DECL_IS_NOVOPS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
288 DECL_IS_RETURNS_TWICE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
289 DECL_IS_MALLOC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
290 DECL_IS_OPERATOR_NEW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
291 DECL_DECLARED_INLINE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
292 DECL_STATIC_CHAIN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
293 DECL_NO_INLINE_WARNING_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
294 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr
)
295 = (unsigned) bp_unpack_value (bp
, 1);
296 DECL_NO_LIMIT_STACK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
297 DECL_DISREGARD_INLINE_LIMITS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
298 DECL_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
299 DECL_LOOPING_CONST_OR_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
300 if (DECL_BUILT_IN_CLASS (expr
) != NOT_BUILT_IN
)
302 DECL_FUNCTION_CODE (expr
) = (enum built_in_function
) bp_unpack_value (bp
,
304 if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_NORMAL
305 && DECL_FUNCTION_CODE (expr
) >= END_BUILTINS
)
306 fatal_error ("machine independent builtin code out of range");
307 else if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_MD
)
309 tree result
= targetm
.builtin_decl (DECL_FUNCTION_CODE (expr
), true);
310 if (!result
|| result
== error_mark_node
)
311 fatal_error ("target specific builtin not available");
314 if (DECL_STATIC_DESTRUCTOR (expr
))
317 p
= (priority_type
) bp_unpack_var_len_unsigned (bp
);
318 SET_DECL_FINI_PRIORITY (expr
, p
);
323 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
324 of expression EXPR from bitpack BP. */
327 unpack_ts_type_common_value_fields (struct bitpack_d
*bp
, tree expr
)
329 enum machine_mode mode
;
331 mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
332 SET_TYPE_MODE (expr
, mode
);
333 TYPE_STRING_FLAG (expr
) = (unsigned) bp_unpack_value (bp
, 1);
334 TYPE_NO_FORCE_BLK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
335 TYPE_NEEDS_CONSTRUCTING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
336 if (RECORD_OR_UNION_TYPE_P (expr
))
337 TYPE_TRANSPARENT_AGGR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
338 TYPE_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
339 TYPE_RESTRICT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
340 TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr
)
341 = (unsigned) bp_unpack_value (bp
, 2);
342 TYPE_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
343 TYPE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
344 TYPE_PRECISION (expr
) = bp_unpack_var_len_unsigned (bp
);
345 TYPE_ALIGN (expr
) = bp_unpack_var_len_unsigned (bp
);
346 TYPE_ALIAS_SET (expr
) = bp_unpack_var_len_int (bp
);
350 /* Unpack all the non-pointer fields of the TS_BLOCK structure
351 of expression EXPR from bitpack BP. */
354 unpack_ts_block_value_fields (struct bitpack_d
*bp
, tree expr
)
356 BLOCK_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
357 /* BLOCK_NUMBER is recomputed. */
360 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
361 structure of expression EXPR from bitpack BP. */
364 unpack_ts_translation_unit_decl_value_fields (struct bitpack_d
*bp ATTRIBUTE_UNUSED
, tree expr ATTRIBUTE_UNUSED
)
368 /* Unpack all the non-pointer fields in EXPR into a bit pack. */
371 unpack_value_fields (struct bitpack_d
*bp
, tree expr
)
375 code
= TREE_CODE (expr
);
377 /* Note that all these functions are highly sensitive to changes in
378 the types and sizes of each of the fields being packed. */
379 unpack_ts_base_value_fields (bp
, expr
);
381 if (CODE_CONTAINS_STRUCT (code
, TS_REAL_CST
))
382 unpack_ts_real_cst_value_fields (bp
, expr
);
384 if (CODE_CONTAINS_STRUCT (code
, TS_FIXED_CST
))
385 unpack_ts_fixed_cst_value_fields (bp
, expr
);
387 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
388 unpack_ts_decl_common_value_fields (bp
, expr
);
390 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WRTL
))
391 unpack_ts_decl_wrtl_value_fields (bp
, expr
);
393 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
394 unpack_ts_decl_with_vis_value_fields (bp
, expr
);
396 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
397 unpack_ts_function_decl_value_fields (bp
, expr
);
399 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
400 unpack_ts_type_common_value_fields (bp
, expr
);
402 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
403 unpack_ts_block_value_fields (bp
, expr
);
405 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
406 unpack_ts_translation_unit_decl_value_fields (bp
, expr
);
410 /* Read all the language-independent bitfield values for EXPR from IB.
411 Return the partially unpacked bitpack so the caller can unpack any other
412 bitfield values that the writer may have written. */
415 streamer_read_tree_bitfields (struct lto_input_block
*ib
, tree expr
)
420 /* Read the bitpack of non-pointer values from IB. */
421 bp
= streamer_read_bitpack (ib
);
423 /* The first word in BP contains the code of the tree that we
424 are about to read. */
425 code
= (enum tree_code
) bp_unpack_value (&bp
, 16);
426 lto_tag_check (lto_tree_code_to_tag (code
),
427 lto_tree_code_to_tag (TREE_CODE (expr
)));
429 /* Unpack all the value fields from BP. */
430 unpack_value_fields (&bp
, expr
);
436 /* Materialize a new tree from input block IB using descriptors in
437 DATA_IN. The code for the new tree should match TAG. Store in
438 *IX_P the index into the reader cache where the new tree is stored. */
441 streamer_alloc_tree (struct lto_input_block
*ib
, struct data_in
*data_in
,
446 #ifdef LTO_STREAMER_DEBUG
447 HOST_WIDEST_INT orig_address_in_writer
;
452 #ifdef LTO_STREAMER_DEBUG
453 /* Read the word representing the memory address for the tree
454 as it was written by the writer. This is useful when
455 debugging differences between the writer and reader. */
456 orig_address_in_writer
= streamer_read_hwi (ib
);
457 gcc_assert ((intptr_t) orig_address_in_writer
== orig_address_in_writer
);
460 code
= lto_tag_to_tree_code (tag
);
462 /* We should never see an SSA_NAME tree. Only the version numbers of
463 SSA names are ever written out. See input_ssa_names. */
464 gcc_assert (code
!= SSA_NAME
);
466 /* Instantiate a new tree using the header data. */
467 if (CODE_CONTAINS_STRUCT (code
, TS_STRING
))
468 result
= streamer_read_string_cst (data_in
, ib
);
469 else if (CODE_CONTAINS_STRUCT (code
, TS_IDENTIFIER
))
470 result
= input_identifier (data_in
, ib
);
471 else if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
473 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
474 result
= make_tree_vec (len
);
476 else if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
478 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
479 result
= make_tree_binfo (len
);
481 else if (code
== CALL_EXPR
)
483 unsigned HOST_WIDE_INT nargs
= streamer_read_uhwi (ib
);
484 return build_vl_exp (CALL_EXPR
, nargs
+ 3);
488 /* For all other nodes, materialize the tree with a raw
490 result
= make_node (code
);
493 #ifdef LTO_STREAMER_DEBUG
494 /* Store the original address of the tree as seen by the writer
495 in RESULT's aux field. This is useful when debugging streaming
496 problems. This way, a debugging session can be started on
497 both writer and reader with a breakpoint using this address
499 lto_orig_address_map (result
, (intptr_t) orig_address_in_writer
);
506 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
507 block IB. DATA_IN contains tables and descriptors for the
512 lto_input_ts_common_tree_pointers (struct lto_input_block
*ib
,
513 struct data_in
*data_in
, tree expr
)
515 if (TREE_CODE (expr
) != IDENTIFIER_NODE
)
516 TREE_TYPE (expr
) = stream_read_tree (ib
, data_in
);
520 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
521 block IB. DATA_IN contains tables and descriptors for the
525 lto_input_ts_vector_tree_pointers (struct lto_input_block
*ib
,
526 struct data_in
*data_in
, tree expr
)
528 TREE_VECTOR_CST_ELTS (expr
) = streamer_read_chain (ib
, data_in
);
532 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
533 block IB. DATA_IN contains tables and descriptors for the
537 lto_input_ts_complex_tree_pointers (struct lto_input_block
*ib
,
538 struct data_in
*data_in
, tree expr
)
540 TREE_REALPART (expr
) = stream_read_tree (ib
, data_in
);
541 TREE_IMAGPART (expr
) = stream_read_tree (ib
, data_in
);
545 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
546 from input block IB. DATA_IN contains tables and descriptors for the
550 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block
*ib
,
551 struct data_in
*data_in
, tree expr
)
553 DECL_NAME (expr
) = stream_read_tree (ib
, data_in
);
554 DECL_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
555 DECL_SOURCE_LOCATION (expr
) = lto_input_location (ib
, data_in
);
559 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
560 input block IB. DATA_IN contains tables and descriptors for the
564 lto_input_ts_decl_common_tree_pointers (struct lto_input_block
*ib
,
565 struct data_in
*data_in
, tree expr
)
567 DECL_SIZE (expr
) = stream_read_tree (ib
, data_in
);
568 DECL_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
569 DECL_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
571 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
572 for early inlining so drop it on the floor instead of ICEing in
575 if (TREE_CODE (expr
) == PARM_DECL
)
576 TREE_CHAIN (expr
) = streamer_read_chain (ib
, data_in
);
578 if ((TREE_CODE (expr
) == VAR_DECL
579 || TREE_CODE (expr
) == PARM_DECL
)
580 && DECL_HAS_VALUE_EXPR_P (expr
))
581 SET_DECL_VALUE_EXPR (expr
, stream_read_tree (ib
, data_in
));
583 if (TREE_CODE (expr
) == VAR_DECL
)
585 tree dexpr
= stream_read_tree (ib
, data_in
);
587 SET_DECL_DEBUG_EXPR (expr
, dexpr
);
592 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
593 EXPR from input block IB. DATA_IN contains tables and descriptors for the
597 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block
*ib
,
598 struct data_in
*data_in
, tree expr
)
600 if (TREE_CODE (expr
) == FUNCTION_DECL
)
602 DECL_ARGUMENTS (expr
) = stream_read_tree (ib
, data_in
);
603 DECL_RESULT (expr
) = stream_read_tree (ib
, data_in
);
605 else if (TREE_CODE (expr
) == TYPE_DECL
)
606 DECL_ORIGINAL_TYPE (expr
) = stream_read_tree (ib
, data_in
);
607 DECL_VINDEX (expr
) = stream_read_tree (ib
, data_in
);
611 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
612 from input block IB. DATA_IN contains tables and descriptors for the
616 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block
*ib
,
617 struct data_in
*data_in
, tree expr
)
621 id
= stream_read_tree (ib
, data_in
);
624 gcc_assert (TREE_CODE (id
) == IDENTIFIER_NODE
);
625 SET_DECL_ASSEMBLER_NAME (expr
, id
);
628 DECL_SECTION_NAME (expr
) = stream_read_tree (ib
, data_in
);
629 DECL_COMDAT_GROUP (expr
) = stream_read_tree (ib
, data_in
);
633 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
634 input block IB. DATA_IN contains tables and descriptors for the
638 lto_input_ts_field_decl_tree_pointers (struct lto_input_block
*ib
,
639 struct data_in
*data_in
, tree expr
)
641 DECL_FIELD_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
642 DECL_BIT_FIELD_TYPE (expr
) = stream_read_tree (ib
, data_in
);
643 /* Do not stream DECL_QUALIFIER, it is useless after gimplification. */
644 DECL_FIELD_BIT_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
645 DECL_FCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
649 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
650 from input block IB. DATA_IN contains tables and descriptors for the
654 lto_input_ts_function_decl_tree_pointers (struct lto_input_block
*ib
,
655 struct data_in
*data_in
, tree expr
)
657 /* DECL_STRUCT_FUNCTION is handled by lto_input_function. FIXME lto,
658 maybe it should be handled here? */
659 DECL_FUNCTION_PERSONALITY (expr
) = stream_read_tree (ib
, data_in
);
660 DECL_FUNCTION_SPECIFIC_TARGET (expr
) = stream_read_tree (ib
, data_in
);
661 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr
) = stream_read_tree (ib
, data_in
);
663 /* If the file contains a function with an EH personality set,
664 then it was compiled with -fexceptions. In that case, initialize
665 the backend EH machinery. */
666 if (DECL_FUNCTION_PERSONALITY (expr
))
671 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
672 input block IB. DATA_IN contains tables and descriptors for the file
676 lto_input_ts_type_common_tree_pointers (struct lto_input_block
*ib
,
677 struct data_in
*data_in
, tree expr
)
679 TYPE_SIZE (expr
) = stream_read_tree (ib
, data_in
);
680 TYPE_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
681 TYPE_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
682 TYPE_NAME (expr
) = stream_read_tree (ib
, data_in
);
683 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
684 reconstructed during fixup. */
685 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
687 TYPE_MAIN_VARIANT (expr
) = stream_read_tree (ib
, data_in
);
688 TYPE_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
689 /* TYPE_CANONICAL gets re-computed during type merging. */
690 TYPE_CANONICAL (expr
) = NULL_TREE
;
691 TYPE_STUB_DECL (expr
) = stream_read_tree (ib
, data_in
);
694 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
695 from input block IB. DATA_IN contains tables and descriptors for the
699 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block
*ib
,
700 struct data_in
*data_in
,
703 if (TREE_CODE (expr
) == ENUMERAL_TYPE
)
704 TYPE_VALUES (expr
) = stream_read_tree (ib
, data_in
);
705 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
706 TYPE_DOMAIN (expr
) = stream_read_tree (ib
, data_in
);
707 else if (RECORD_OR_UNION_TYPE_P (expr
))
708 TYPE_FIELDS (expr
) = streamer_read_chain (ib
, data_in
);
709 else if (TREE_CODE (expr
) == FUNCTION_TYPE
710 || TREE_CODE (expr
) == METHOD_TYPE
)
711 TYPE_ARG_TYPES (expr
) = stream_read_tree (ib
, data_in
);
713 if (!POINTER_TYPE_P (expr
))
714 TYPE_MINVAL (expr
) = stream_read_tree (ib
, data_in
);
715 TYPE_MAXVAL (expr
) = stream_read_tree (ib
, data_in
);
716 if (RECORD_OR_UNION_TYPE_P (expr
))
717 TYPE_BINFO (expr
) = stream_read_tree (ib
, data_in
);
721 /* Read all pointer fields in the TS_LIST structure of EXPR from input
722 block IB. DATA_IN contains tables and descriptors for the
726 lto_input_ts_list_tree_pointers (struct lto_input_block
*ib
,
727 struct data_in
*data_in
, tree expr
)
729 TREE_PURPOSE (expr
) = stream_read_tree (ib
, data_in
);
730 TREE_VALUE (expr
) = stream_read_tree (ib
, data_in
);
731 TREE_CHAIN (expr
) = streamer_read_chain (ib
, data_in
);
735 /* Read all pointer fields in the TS_VEC structure of EXPR from input
736 block IB. DATA_IN contains tables and descriptors for the
740 lto_input_ts_vec_tree_pointers (struct lto_input_block
*ib
,
741 struct data_in
*data_in
, tree expr
)
745 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
747 for (i
= 0; i
< TREE_VEC_LENGTH (expr
); i
++)
748 TREE_VEC_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
752 /* Read all pointer fields in the TS_EXP structure of EXPR from input
753 block IB. DATA_IN contains tables and descriptors for the
758 lto_input_ts_exp_tree_pointers (struct lto_input_block
*ib
,
759 struct data_in
*data_in
, tree expr
)
764 length
= streamer_read_hwi (ib
);
765 gcc_assert (length
== TREE_OPERAND_LENGTH (expr
));
767 for (i
= 0; i
< length
; i
++)
768 TREE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
770 loc
= lto_input_location (ib
, data_in
);
771 SET_EXPR_LOCATION (expr
, loc
);
772 TREE_BLOCK (expr
) = stream_read_tree (ib
, data_in
);
776 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
777 block IB. DATA_IN contains tables and descriptors for the
781 lto_input_ts_block_tree_pointers (struct lto_input_block
*ib
,
782 struct data_in
*data_in
, tree expr
)
784 /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information
785 for early inlining so drop it on the floor instead of ICEing in
787 BLOCK_VARS (expr
) = streamer_read_chain (ib
, data_in
);
789 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
790 for early inlining so drop it on the floor instead of ICEing in
793 BLOCK_SUPERCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
795 /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information
796 for early inlining so drop it on the floor instead of ICEing in
798 BLOCK_FRAGMENT_ORIGIN (expr
) = stream_read_tree (ib
, data_in
);
799 BLOCK_FRAGMENT_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
801 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
802 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
803 stream the child relationship explicitly. */
804 if (BLOCK_SUPERCONTEXT (expr
)
805 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == BLOCK
)
807 BLOCK_CHAIN (expr
) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
));
808 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
)) = expr
;
811 /* The global block is rooted at the TU decl. Hook it here to
812 avoid the need to stream in this block during WPA time. */
813 else if (BLOCK_SUPERCONTEXT (expr
)
814 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == TRANSLATION_UNIT_DECL
)
815 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr
)) = expr
;
817 /* The function-level block is connected at the time we read in
818 function bodies for the same reason. */
822 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
823 block IB. DATA_IN contains tables and descriptors for the
827 lto_input_ts_binfo_tree_pointers (struct lto_input_block
*ib
,
828 struct data_in
*data_in
, tree expr
)
833 /* Note that the number of slots in EXPR was read in
834 streamer_alloc_tree when instantiating EXPR. However, the
835 vector is empty so we cannot rely on VEC_length to know how many
836 elements to read. So, this list is emitted as a 0-terminated
837 list on the writer side. */
840 t
= stream_read_tree (ib
, data_in
);
842 VEC_quick_push (tree
, BINFO_BASE_BINFOS (expr
), t
);
846 BINFO_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
847 BINFO_VTABLE (expr
) = stream_read_tree (ib
, data_in
);
848 BINFO_VPTR_FIELD (expr
) = stream_read_tree (ib
, data_in
);
850 len
= streamer_read_uhwi (ib
);
853 VEC_reserve_exact (tree
, gc
, BINFO_BASE_ACCESSES (expr
), len
);
854 for (i
= 0; i
< len
; i
++)
856 tree a
= stream_read_tree (ib
, data_in
);
857 VEC_quick_push (tree
, BINFO_BASE_ACCESSES (expr
), a
);
861 BINFO_INHERITANCE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
862 BINFO_SUBVTT_INDEX (expr
) = stream_read_tree (ib
, data_in
);
863 BINFO_VPTR_INDEX (expr
) = stream_read_tree (ib
, data_in
);
867 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
868 input block IB. DATA_IN contains tables and descriptors for the
872 lto_input_ts_constructor_tree_pointers (struct lto_input_block
*ib
,
873 struct data_in
*data_in
, tree expr
)
877 len
= streamer_read_uhwi (ib
);
878 for (i
= 0; i
< len
; i
++)
882 index
= stream_read_tree (ib
, data_in
);
883 value
= stream_read_tree (ib
, data_in
);
884 CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (expr
), index
, value
);
889 /* Input a TS_TARGET_OPTION tree from IB into EXPR. */
892 lto_input_ts_target_option (struct lto_input_block
*ib
, tree expr
)
896 struct cl_target_option
*t
= TREE_TARGET_OPTION (expr
);
898 bp
= streamer_read_bitpack (ib
);
899 len
= sizeof (struct cl_target_option
);
900 for (i
= 0; i
< len
; i
++)
901 ((unsigned char *)t
)[i
] = bp_unpack_value (&bp
, 8);
902 if (bp_unpack_value (&bp
, 32) != 0x12345678)
903 fatal_error ("cl_target_option size mismatch in LTO reader and writer");
906 /* Input a TS_OPTIMIZATION tree from IB into EXPR. */
909 lto_input_ts_optimization (struct lto_input_block
*ib
, tree expr
)
913 struct cl_optimization
*t
= TREE_OPTIMIZATION (expr
);
915 bp
= streamer_read_bitpack (ib
);
916 len
= sizeof (struct cl_optimization
);
917 for (i
= 0; i
< len
; i
++)
918 ((unsigned char *)t
)[i
] = bp_unpack_value (&bp
, 8);
919 if (bp_unpack_value (&bp
, 32) != 0x12345678)
920 fatal_error ("cl_optimization size mismatch in LTO reader and writer");
923 /* Input a TS_TRANSLATION_UNIT_DECL tree from IB and DATA_IN into EXPR. */
926 lto_input_ts_translation_unit_decl_tree_pointers (struct lto_input_block
*ib
,
927 struct data_in
*data_in
,
930 TRANSLATION_UNIT_LANGUAGE (expr
) = xstrdup (streamer_read_string (data_in
, ib
));
931 VEC_safe_push (tree
, gc
, all_translation_units
, expr
);
934 /* Read all pointer fields in EXPR from input block IB. DATA_IN
935 contains tables and descriptors for the file being read. */
938 streamer_read_tree_body (struct lto_input_block
*ib
, struct data_in
*data_in
,
943 code
= TREE_CODE (expr
);
945 if (CODE_CONTAINS_STRUCT (code
, TS_TYPED
))
946 lto_input_ts_common_tree_pointers (ib
, data_in
, expr
);
948 if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
949 lto_input_ts_vector_tree_pointers (ib
, data_in
, expr
);
951 if (CODE_CONTAINS_STRUCT (code
, TS_COMPLEX
))
952 lto_input_ts_complex_tree_pointers (ib
, data_in
, expr
);
954 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
955 lto_input_ts_decl_minimal_tree_pointers (ib
, data_in
, expr
);
957 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
958 lto_input_ts_decl_common_tree_pointers (ib
, data_in
, expr
);
960 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_NON_COMMON
))
961 lto_input_ts_decl_non_common_tree_pointers (ib
, data_in
, expr
);
963 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
964 lto_input_ts_decl_with_vis_tree_pointers (ib
, data_in
, expr
);
966 if (CODE_CONTAINS_STRUCT (code
, TS_FIELD_DECL
))
967 lto_input_ts_field_decl_tree_pointers (ib
, data_in
, expr
);
969 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
970 lto_input_ts_function_decl_tree_pointers (ib
, data_in
, expr
);
972 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
973 lto_input_ts_type_common_tree_pointers (ib
, data_in
, expr
);
975 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_NON_COMMON
))
976 lto_input_ts_type_non_common_tree_pointers (ib
, data_in
, expr
);
978 if (CODE_CONTAINS_STRUCT (code
, TS_LIST
))
979 lto_input_ts_list_tree_pointers (ib
, data_in
, expr
);
981 if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
982 lto_input_ts_vec_tree_pointers (ib
, data_in
, expr
);
984 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
985 lto_input_ts_exp_tree_pointers (ib
, data_in
, expr
);
987 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
988 lto_input_ts_block_tree_pointers (ib
, data_in
, expr
);
990 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
991 lto_input_ts_binfo_tree_pointers (ib
, data_in
, expr
);
993 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
994 lto_input_ts_constructor_tree_pointers (ib
, data_in
, expr
);
996 if (CODE_CONTAINS_STRUCT (code
, TS_TARGET_OPTION
))
997 lto_input_ts_target_option (ib
, expr
);
999 if (CODE_CONTAINS_STRUCT (code
, TS_OPTIMIZATION
))
1000 lto_input_ts_optimization (ib
, expr
);
1002 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
1003 lto_input_ts_translation_unit_decl_tree_pointers (ib
, data_in
, expr
);
1007 /* Read and INTEGER_CST node from input block IB using the per-file
1008 context in DATA_IN. */
1011 streamer_read_integer_cst (struct lto_input_block
*ib
, struct data_in
*data_in
)
1014 HOST_WIDE_INT low
, high
;
1017 type
= stream_read_tree (ib
, data_in
);
1018 overflow_p
= (streamer_read_uchar (ib
) != 0);
1019 low
= streamer_read_uhwi (ib
);
1020 high
= streamer_read_uhwi (ib
);
1021 result
= build_int_cst_wide (type
, low
, high
);
1023 /* If the original constant had overflown, build a replica of RESULT to
1024 avoid modifying the shared constant returned by build_int_cst_wide. */
1027 result
= copy_node (result
);
1028 TREE_OVERFLOW (result
) = 1;
1035 /* Read an index IX from input block IB and return the tree node at
1036 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1039 streamer_get_pickled_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1041 unsigned HOST_WIDE_INT ix
;
1043 enum LTO_tags expected_tag
;
1045 ix
= streamer_read_uhwi (ib
);
1046 expected_tag
= streamer_read_enum (ib
, LTO_tags
, LTO_NUM_TAGS
);
1048 result
= streamer_tree_cache_get (data_in
->reader_cache
, ix
);
1050 && TREE_CODE (result
) == lto_tag_to_tree_code (expected_tag
));
1056 /* Read a code and class from input block IB and return the
1057 corresponding builtin. DATA_IN is as in stream_read_tree. */
1060 streamer_get_builtin_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1062 enum built_in_class fclass
;
1063 enum built_in_function fcode
;
1064 const char *asmname
;
1067 fclass
= streamer_read_enum (ib
, built_in_class
, BUILT_IN_LAST
);
1068 gcc_assert (fclass
== BUILT_IN_NORMAL
|| fclass
== BUILT_IN_MD
);
1070 fcode
= (enum built_in_function
) streamer_read_uhwi (ib
);
1072 if (fclass
== BUILT_IN_NORMAL
)
1074 if (fcode
>= END_BUILTINS
)
1075 fatal_error ("machine independent builtin code out of range");
1076 result
= builtin_decl_explicit (fcode
);
1077 gcc_assert (result
);
1079 else if (fclass
== BUILT_IN_MD
)
1081 result
= targetm
.builtin_decl (fcode
, true);
1082 if (!result
|| result
== error_mark_node
)
1083 fatal_error ("target specific builtin not available");
1088 asmname
= streamer_read_string (data_in
, ib
);
1090 set_builtin_user_assembler_name (result
, asmname
);
1092 streamer_tree_cache_append (data_in
->reader_cache
, result
);