1 /* Gimple IR support functions.
3 Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
4 Contributed by Aldy Hernandez <aldyh@redhat.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"
29 #include "hard-reg-set.h"
30 #include "basic-block.h"
33 #include "diagnostic.h"
34 #include "tree-flow.h"
35 #include "value-prof.h"
40 /* Global type table. FIXME lto, it should be possible to re-use some
41 of the type hashing routines in tree.c (type_hash_canon, type_hash_lookup,
42 etc), but those assume that types were built with the various
43 build_*_type routines which is not the case with the streamer. */
44 static htab_t gimple_types
;
45 static struct pointer_map_t
*type_hash_cache
;
47 /* Global type comparison cache. */
48 static htab_t gtc_visited
;
49 static struct obstack gtc_ob
;
51 /* All the tuples have their operand vector (if present) at the very bottom
52 of the structure. Therefore, the offset required to find the
53 operands vector the size of the structure minus the size of the 1
54 element tree array at the end (see gimple_ops). */
55 #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \
56 (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0),
57 EXPORTED_CONST
size_t gimple_ops_offset_
[] = {
58 #include "gsstruct.def"
62 #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof(struct STRUCT),
63 static const size_t gsstruct_code_size
[] = {
64 #include "gsstruct.def"
68 #define DEFGSCODE(SYM, NAME, GSSCODE) NAME,
69 const char *const gimple_code_name
[] = {
74 #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE,
75 EXPORTED_CONST
enum gimple_statement_structure_enum gss_for_code_
[] = {
80 #ifdef GATHER_STATISTICS
83 int gimple_alloc_counts
[(int) gimple_alloc_kind_all
];
84 int gimple_alloc_sizes
[(int) gimple_alloc_kind_all
];
86 /* Keep in sync with gimple.h:enum gimple_alloc_kind. */
87 static const char * const gimple_alloc_kind_names
[] = {
95 #endif /* GATHER_STATISTICS */
97 /* A cache of gimple_seq objects. Sequences are created and destroyed
98 fairly often during gimplification. */
99 static GTY ((deletable
)) struct gimple_seq_d
*gimple_seq_cache
;
101 /* Private API manipulation functions shared only with some
103 extern void gimple_set_stored_syms (gimple
, bitmap
, bitmap_obstack
*);
104 extern void gimple_set_loaded_syms (gimple
, bitmap
, bitmap_obstack
*);
106 /* Gimple tuple constructors.
107 Note: Any constructor taking a ``gimple_seq'' as a parameter, can
108 be passed a NULL to start with an empty sequence. */
110 /* Set the code for statement G to CODE. */
113 gimple_set_code (gimple g
, enum gimple_code code
)
115 g
->gsbase
.code
= code
;
118 /* Return the number of bytes needed to hold a GIMPLE statement with
122 gimple_size (enum gimple_code code
)
124 return gsstruct_code_size
[gss_for_code (code
)];
127 /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS
131 gimple_alloc_stat (enum gimple_code code
, unsigned num_ops MEM_STAT_DECL
)
136 size
= gimple_size (code
);
138 size
+= sizeof (tree
) * (num_ops
- 1);
140 #ifdef GATHER_STATISTICS
142 enum gimple_alloc_kind kind
= gimple_alloc_kind (code
);
143 gimple_alloc_counts
[(int) kind
]++;
144 gimple_alloc_sizes
[(int) kind
] += size
;
148 stmt
= (gimple
) ggc_alloc_cleared_stat (size PASS_MEM_STAT
);
149 gimple_set_code (stmt
, code
);
150 gimple_set_num_ops (stmt
, num_ops
);
152 /* Do not call gimple_set_modified here as it has other side
153 effects and this tuple is still not completely built. */
154 stmt
->gsbase
.modified
= 1;
159 /* Set SUBCODE to be the code of the expression computed by statement G. */
162 gimple_set_subcode (gimple g
, unsigned subcode
)
164 /* We only have 16 bits for the RHS code. Assert that we are not
166 gcc_assert (subcode
< (1 << 16));
167 g
->gsbase
.subcode
= subcode
;
172 /* Build a tuple with operands. CODE is the statement to build (which
173 must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the sub-code
174 for the new tuple. NUM_OPS is the number of operands to allocate. */
176 #define gimple_build_with_ops(c, s, n) \
177 gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO)
180 gimple_build_with_ops_stat (enum gimple_code code
, unsigned subcode
,
181 unsigned num_ops MEM_STAT_DECL
)
183 gimple s
= gimple_alloc_stat (code
, num_ops PASS_MEM_STAT
);
184 gimple_set_subcode (s
, subcode
);
190 /* Build a GIMPLE_RETURN statement returning RETVAL. */
193 gimple_build_return (tree retval
)
195 gimple s
= gimple_build_with_ops (GIMPLE_RETURN
, ERROR_MARK
, 1);
197 gimple_return_set_retval (s
, retval
);
201 /* Helper for gimple_build_call, gimple_build_call_vec and
202 gimple_build_call_from_tree. Build the basic components of a
203 GIMPLE_CALL statement to function FN with NARGS arguments. */
206 gimple_build_call_1 (tree fn
, unsigned nargs
)
208 gimple s
= gimple_build_with_ops (GIMPLE_CALL
, ERROR_MARK
, nargs
+ 3);
209 if (TREE_CODE (fn
) == FUNCTION_DECL
)
210 fn
= build_fold_addr_expr (fn
);
211 gimple_set_op (s
, 1, fn
);
216 /* Build a GIMPLE_CALL statement to function FN with the arguments
217 specified in vector ARGS. */
220 gimple_build_call_vec (tree fn
, VEC(tree
, heap
) *args
)
223 unsigned nargs
= VEC_length (tree
, args
);
224 gimple call
= gimple_build_call_1 (fn
, nargs
);
226 for (i
= 0; i
< nargs
; i
++)
227 gimple_call_set_arg (call
, i
, VEC_index (tree
, args
, i
));
233 /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of
234 arguments. The ... are the arguments. */
237 gimple_build_call (tree fn
, unsigned nargs
, ...)
243 gcc_assert (TREE_CODE (fn
) == FUNCTION_DECL
|| is_gimple_call_addr (fn
));
245 call
= gimple_build_call_1 (fn
, nargs
);
247 va_start (ap
, nargs
);
248 for (i
= 0; i
< nargs
; i
++)
249 gimple_call_set_arg (call
, i
, va_arg (ap
, tree
));
256 /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is
257 assumed to be in GIMPLE form already. Minimal checking is done of
261 gimple_build_call_from_tree (tree t
)
265 tree fndecl
= get_callee_fndecl (t
);
267 gcc_assert (TREE_CODE (t
) == CALL_EXPR
);
269 nargs
= call_expr_nargs (t
);
270 call
= gimple_build_call_1 (fndecl
? fndecl
: CALL_EXPR_FN (t
), nargs
);
272 for (i
= 0; i
< nargs
; i
++)
273 gimple_call_set_arg (call
, i
, CALL_EXPR_ARG (t
, i
));
275 gimple_set_block (call
, TREE_BLOCK (t
));
277 /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */
278 gimple_call_set_chain (call
, CALL_EXPR_STATIC_CHAIN (t
));
279 gimple_call_set_tail (call
, CALL_EXPR_TAILCALL (t
));
280 gimple_call_set_cannot_inline (call
, CALL_CANNOT_INLINE_P (t
));
281 gimple_call_set_return_slot_opt (call
, CALL_EXPR_RETURN_SLOT_OPT (t
));
282 gimple_call_set_from_thunk (call
, CALL_FROM_THUNK_P (t
));
283 gimple_call_set_va_arg_pack (call
, CALL_EXPR_VA_ARG_PACK (t
));
284 gimple_set_no_warning (call
, TREE_NO_WARNING (t
));
290 /* Extract the operands and code for expression EXPR into *SUBCODE_P,
291 *OP1_P and *OP2_P respectively. */
294 extract_ops_from_tree (tree expr
, enum tree_code
*subcode_p
, tree
*op1_p
,
297 enum gimple_rhs_class grhs_class
;
299 *subcode_p
= TREE_CODE (expr
);
300 grhs_class
= get_gimple_rhs_class (*subcode_p
);
302 if (grhs_class
== GIMPLE_BINARY_RHS
)
304 *op1_p
= TREE_OPERAND (expr
, 0);
305 *op2_p
= TREE_OPERAND (expr
, 1);
307 else if (grhs_class
== GIMPLE_UNARY_RHS
)
309 *op1_p
= TREE_OPERAND (expr
, 0);
312 else if (grhs_class
== GIMPLE_SINGLE_RHS
)
322 /* Build a GIMPLE_ASSIGN statement.
324 LHS of the assignment.
325 RHS of the assignment which can be unary or binary. */
328 gimple_build_assign_stat (tree lhs
, tree rhs MEM_STAT_DECL
)
330 enum tree_code subcode
;
333 extract_ops_from_tree (rhs
, &subcode
, &op1
, &op2
);
334 return gimple_build_assign_with_ops_stat (subcode
, lhs
, op1
, op2
339 /* Build a GIMPLE_ASSIGN statement with sub-code SUBCODE and operands
340 OP1 and OP2. If OP2 is NULL then SUBCODE must be of class
341 GIMPLE_UNARY_RHS or GIMPLE_SINGLE_RHS. */
344 gimple_build_assign_with_ops_stat (enum tree_code subcode
, tree lhs
, tree op1
,
345 tree op2 MEM_STAT_DECL
)
350 /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the
352 num_ops
= get_gimple_rhs_num_ops (subcode
) + 1;
354 p
= gimple_build_with_ops_stat (GIMPLE_ASSIGN
, (unsigned)subcode
, num_ops
356 gimple_assign_set_lhs (p
, lhs
);
357 gimple_assign_set_rhs1 (p
, op1
);
360 gcc_assert (num_ops
> 2);
361 gimple_assign_set_rhs2 (p
, op2
);
368 /* Build a new GIMPLE_ASSIGN tuple and append it to the end of *SEQ_P.
370 DST/SRC are the destination and source respectively. You can pass
371 ungimplified trees in DST or SRC, in which case they will be
372 converted to a gimple operand if necessary.
374 This function returns the newly created GIMPLE_ASSIGN tuple. */
377 gimplify_assign (tree dst
, tree src
, gimple_seq
*seq_p
)
379 tree t
= build2 (MODIFY_EXPR
, TREE_TYPE (dst
), dst
, src
);
380 gimplify_and_add (t
, seq_p
);
382 return gimple_seq_last_stmt (*seq_p
);
386 /* Build a GIMPLE_COND statement.
388 PRED is the condition used to compare LHS and the RHS.
389 T_LABEL is the label to jump to if the condition is true.
390 F_LABEL is the label to jump to otherwise. */
393 gimple_build_cond (enum tree_code pred_code
, tree lhs
, tree rhs
,
394 tree t_label
, tree f_label
)
398 gcc_assert (TREE_CODE_CLASS (pred_code
) == tcc_comparison
);
399 p
= gimple_build_with_ops (GIMPLE_COND
, pred_code
, 4);
400 gimple_cond_set_lhs (p
, lhs
);
401 gimple_cond_set_rhs (p
, rhs
);
402 gimple_cond_set_true_label (p
, t_label
);
403 gimple_cond_set_false_label (p
, f_label
);
408 /* Extract operands for a GIMPLE_COND statement out of COND_EXPR tree COND. */
411 gimple_cond_get_ops_from_tree (tree cond
, enum tree_code
*code_p
,
412 tree
*lhs_p
, tree
*rhs_p
)
414 location_t loc
= EXPR_LOCATION (cond
);
415 gcc_assert (TREE_CODE_CLASS (TREE_CODE (cond
)) == tcc_comparison
416 || TREE_CODE (cond
) == TRUTH_NOT_EXPR
417 || is_gimple_min_invariant (cond
)
418 || SSA_VAR_P (cond
));
420 extract_ops_from_tree (cond
, code_p
, lhs_p
, rhs_p
);
422 /* Canonicalize conditionals of the form 'if (!VAL)'. */
423 if (*code_p
== TRUTH_NOT_EXPR
)
426 gcc_assert (*lhs_p
&& *rhs_p
== NULL_TREE
);
427 *rhs_p
= fold_convert_loc (loc
, TREE_TYPE (*lhs_p
), integer_zero_node
);
429 /* Canonicalize conditionals of the form 'if (VAL)' */
430 else if (TREE_CODE_CLASS (*code_p
) != tcc_comparison
)
433 gcc_assert (*lhs_p
&& *rhs_p
== NULL_TREE
);
434 *rhs_p
= fold_convert_loc (loc
, TREE_TYPE (*lhs_p
), integer_zero_node
);
439 /* Build a GIMPLE_COND statement from the conditional expression tree
440 COND. T_LABEL and F_LABEL are as in gimple_build_cond. */
443 gimple_build_cond_from_tree (tree cond
, tree t_label
, tree f_label
)
448 gimple_cond_get_ops_from_tree (cond
, &code
, &lhs
, &rhs
);
449 return gimple_build_cond (code
, lhs
, rhs
, t_label
, f_label
);
452 /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable
453 boolean expression tree COND. */
456 gimple_cond_set_condition_from_tree (gimple stmt
, tree cond
)
461 gimple_cond_get_ops_from_tree (cond
, &code
, &lhs
, &rhs
);
462 gimple_cond_set_condition (stmt
, code
, lhs
, rhs
);
465 /* Build a GIMPLE_LABEL statement for LABEL. */
468 gimple_build_label (tree label
)
470 gimple p
= gimple_build_with_ops (GIMPLE_LABEL
, ERROR_MARK
, 1);
471 gimple_label_set_label (p
, label
);
475 /* Build a GIMPLE_GOTO statement to label DEST. */
478 gimple_build_goto (tree dest
)
480 gimple p
= gimple_build_with_ops (GIMPLE_GOTO
, ERROR_MARK
, 1);
481 gimple_goto_set_dest (p
, dest
);
486 /* Build a GIMPLE_NOP statement. */
489 gimple_build_nop (void)
491 return gimple_alloc (GIMPLE_NOP
, 0);
495 /* Build a GIMPLE_BIND statement.
496 VARS are the variables in BODY.
497 BLOCK is the containing block. */
500 gimple_build_bind (tree vars
, gimple_seq body
, tree block
)
502 gimple p
= gimple_alloc (GIMPLE_BIND
, 0);
503 gimple_bind_set_vars (p
, vars
);
505 gimple_bind_set_body (p
, body
);
507 gimple_bind_set_block (p
, block
);
511 /* Helper function to set the simple fields of a asm stmt.
513 STRING is a pointer to a string that is the asm blocks assembly code.
514 NINPUT is the number of register inputs.
515 NOUTPUT is the number of register outputs.
516 NCLOBBERS is the number of clobbered registers.
520 gimple_build_asm_1 (const char *string
, unsigned ninputs
, unsigned noutputs
,
521 unsigned nclobbers
, unsigned nlabels
)
524 int size
= strlen (string
);
526 /* ASMs with labels cannot have outputs. This should have been
527 enforced by the front end. */
528 gcc_assert (nlabels
== 0 || noutputs
== 0);
530 p
= gimple_build_with_ops (GIMPLE_ASM
, ERROR_MARK
,
531 ninputs
+ noutputs
+ nclobbers
+ nlabels
);
533 p
->gimple_asm
.ni
= ninputs
;
534 p
->gimple_asm
.no
= noutputs
;
535 p
->gimple_asm
.nc
= nclobbers
;
536 p
->gimple_asm
.nl
= nlabels
;
537 p
->gimple_asm
.string
= ggc_alloc_string (string
, size
);
539 #ifdef GATHER_STATISTICS
540 gimple_alloc_sizes
[(int) gimple_alloc_kind (GIMPLE_ASM
)] += size
;
546 /* Build a GIMPLE_ASM statement.
548 STRING is the assembly code.
549 NINPUT is the number of register inputs.
550 NOUTPUT is the number of register outputs.
551 NCLOBBERS is the number of clobbered registers.
552 INPUTS is a vector of the input register parameters.
553 OUTPUTS is a vector of the output register parameters.
554 CLOBBERS is a vector of the clobbered register parameters.
555 LABELS is a vector of destination labels. */
558 gimple_build_asm_vec (const char *string
, VEC(tree
,gc
)* inputs
,
559 VEC(tree
,gc
)* outputs
, VEC(tree
,gc
)* clobbers
,
560 VEC(tree
,gc
)* labels
)
565 p
= gimple_build_asm_1 (string
,
566 VEC_length (tree
, inputs
),
567 VEC_length (tree
, outputs
),
568 VEC_length (tree
, clobbers
),
569 VEC_length (tree
, labels
));
571 for (i
= 0; i
< VEC_length (tree
, inputs
); i
++)
572 gimple_asm_set_input_op (p
, i
, VEC_index (tree
, inputs
, i
));
574 for (i
= 0; i
< VEC_length (tree
, outputs
); i
++)
575 gimple_asm_set_output_op (p
, i
, VEC_index (tree
, outputs
, i
));
577 for (i
= 0; i
< VEC_length (tree
, clobbers
); i
++)
578 gimple_asm_set_clobber_op (p
, i
, VEC_index (tree
, clobbers
, i
));
580 for (i
= 0; i
< VEC_length (tree
, labels
); i
++)
581 gimple_asm_set_label_op (p
, i
, VEC_index (tree
, labels
, i
));
586 /* Build a GIMPLE_CATCH statement.
588 TYPES are the catch types.
589 HANDLER is the exception handler. */
592 gimple_build_catch (tree types
, gimple_seq handler
)
594 gimple p
= gimple_alloc (GIMPLE_CATCH
, 0);
595 gimple_catch_set_types (p
, types
);
597 gimple_catch_set_handler (p
, handler
);
602 /* Build a GIMPLE_EH_FILTER statement.
604 TYPES are the filter's types.
605 FAILURE is the filter's failure action. */
608 gimple_build_eh_filter (tree types
, gimple_seq failure
)
610 gimple p
= gimple_alloc (GIMPLE_EH_FILTER
, 0);
611 gimple_eh_filter_set_types (p
, types
);
613 gimple_eh_filter_set_failure (p
, failure
);
618 /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */
621 gimple_build_eh_must_not_throw (tree decl
)
623 gimple p
= gimple_alloc (GIMPLE_EH_MUST_NOT_THROW
, 1);
625 gcc_assert (TREE_CODE (decl
) == FUNCTION_DECL
);
626 gcc_assert (flags_from_decl_or_type (decl
) & ECF_NORETURN
);
627 gimple_eh_must_not_throw_set_fndecl (p
, decl
);
632 /* Build a GIMPLE_TRY statement.
634 EVAL is the expression to evaluate.
635 CLEANUP is the cleanup expression.
636 KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on
637 whether this is a try/catch or a try/finally respectively. */
640 gimple_build_try (gimple_seq eval
, gimple_seq cleanup
,
641 enum gimple_try_flags kind
)
645 gcc_assert (kind
== GIMPLE_TRY_CATCH
|| kind
== GIMPLE_TRY_FINALLY
);
646 p
= gimple_alloc (GIMPLE_TRY
, 0);
647 gimple_set_subcode (p
, kind
);
649 gimple_try_set_eval (p
, eval
);
651 gimple_try_set_cleanup (p
, cleanup
);
656 /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement.
658 CLEANUP is the cleanup expression. */
661 gimple_build_wce (gimple_seq cleanup
)
663 gimple p
= gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR
, 0);
665 gimple_wce_set_cleanup (p
, cleanup
);
671 /* Build a GIMPLE_RESX statement. */
674 gimple_build_resx (int region
)
676 gimple p
= gimple_build_with_ops (GIMPLE_RESX
, ERROR_MARK
, 0);
677 p
->gimple_eh_ctrl
.region
= region
;
682 /* The helper for constructing a gimple switch statement.
683 INDEX is the switch's index.
684 NLABELS is the number of labels in the switch excluding the default.
685 DEFAULT_LABEL is the default label for the switch statement. */
688 gimple_build_switch_nlabels (unsigned nlabels
, tree index
, tree default_label
)
690 /* nlabels + 1 default label + 1 index. */
691 gimple p
= gimple_build_with_ops (GIMPLE_SWITCH
, ERROR_MARK
,
692 1 + (default_label
!= NULL
) + nlabels
);
693 gimple_switch_set_index (p
, index
);
695 gimple_switch_set_default_label (p
, default_label
);
700 /* Build a GIMPLE_SWITCH statement.
702 INDEX is the switch's index.
703 NLABELS is the number of labels in the switch excluding the DEFAULT_LABEL.
704 ... are the labels excluding the default. */
707 gimple_build_switch (unsigned nlabels
, tree index
, tree default_label
, ...)
711 gimple p
= gimple_build_switch_nlabels (nlabels
, index
, default_label
);
713 /* Store the rest of the labels. */
714 va_start (al
, default_label
);
715 offset
= (default_label
!= NULL
);
716 for (i
= 0; i
< nlabels
; i
++)
717 gimple_switch_set_label (p
, i
+ offset
, va_arg (al
, tree
));
724 /* Build a GIMPLE_SWITCH statement.
726 INDEX is the switch's index.
727 DEFAULT_LABEL is the default label
728 ARGS is a vector of labels excluding the default. */
731 gimple_build_switch_vec (tree index
, tree default_label
, VEC(tree
, heap
) *args
)
733 unsigned i
, offset
, nlabels
= VEC_length (tree
, args
);
734 gimple p
= gimple_build_switch_nlabels (nlabels
, index
, default_label
);
736 /* Copy the labels from the vector to the switch statement. */
737 offset
= (default_label
!= NULL
);
738 for (i
= 0; i
< nlabels
; i
++)
739 gimple_switch_set_label (p
, i
+ offset
, VEC_index (tree
, args
, i
));
744 /* Build a GIMPLE_EH_DISPATCH statement. */
747 gimple_build_eh_dispatch (int region
)
749 gimple p
= gimple_build_with_ops (GIMPLE_EH_DISPATCH
, ERROR_MARK
, 0);
750 p
->gimple_eh_ctrl
.region
= region
;
754 /* Build a new GIMPLE_DEBUG_BIND statement.
756 VAR is bound to VALUE; block and location are taken from STMT. */
759 gimple_build_debug_bind_stat (tree var
, tree value
, gimple stmt MEM_STAT_DECL
)
761 gimple p
= gimple_build_with_ops_stat (GIMPLE_DEBUG
,
762 (unsigned)GIMPLE_DEBUG_BIND
, 2
765 gimple_debug_bind_set_var (p
, var
);
766 gimple_debug_bind_set_value (p
, value
);
769 gimple_set_block (p
, gimple_block (stmt
));
770 gimple_set_location (p
, gimple_location (stmt
));
777 /* Build a GIMPLE_OMP_CRITICAL statement.
779 BODY is the sequence of statements for which only one thread can execute.
780 NAME is optional identifier for this critical block. */
783 gimple_build_omp_critical (gimple_seq body
, tree name
)
785 gimple p
= gimple_alloc (GIMPLE_OMP_CRITICAL
, 0);
786 gimple_omp_critical_set_name (p
, name
);
788 gimple_omp_set_body (p
, body
);
793 /* Build a GIMPLE_OMP_FOR statement.
795 BODY is sequence of statements inside the for loop.
796 CLAUSES, are any of the OMP loop construct's clauses: private, firstprivate,
797 lastprivate, reductions, ordered, schedule, and nowait.
798 COLLAPSE is the collapse count.
799 PRE_BODY is the sequence of statements that are loop invariant. */
802 gimple_build_omp_for (gimple_seq body
, tree clauses
, size_t collapse
,
805 gimple p
= gimple_alloc (GIMPLE_OMP_FOR
, 0);
807 gimple_omp_set_body (p
, body
);
808 gimple_omp_for_set_clauses (p
, clauses
);
809 p
->gimple_omp_for
.collapse
= collapse
;
810 p
->gimple_omp_for
.iter
= GGC_CNEWVEC (struct gimple_omp_for_iter
, collapse
);
812 gimple_omp_for_set_pre_body (p
, pre_body
);
818 /* Build a GIMPLE_OMP_PARALLEL statement.
820 BODY is sequence of statements which are executed in parallel.
821 CLAUSES, are the OMP parallel construct's clauses.
822 CHILD_FN is the function created for the parallel threads to execute.
823 DATA_ARG are the shared data argument(s). */
826 gimple_build_omp_parallel (gimple_seq body
, tree clauses
, tree child_fn
,
829 gimple p
= gimple_alloc (GIMPLE_OMP_PARALLEL
, 0);
831 gimple_omp_set_body (p
, body
);
832 gimple_omp_parallel_set_clauses (p
, clauses
);
833 gimple_omp_parallel_set_child_fn (p
, child_fn
);
834 gimple_omp_parallel_set_data_arg (p
, data_arg
);
840 /* Build a GIMPLE_OMP_TASK statement.
842 BODY is sequence of statements which are executed by the explicit task.
843 CLAUSES, are the OMP parallel construct's clauses.
844 CHILD_FN is the function created for the parallel threads to execute.
845 DATA_ARG are the shared data argument(s).
846 COPY_FN is the optional function for firstprivate initialization.
847 ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */
850 gimple_build_omp_task (gimple_seq body
, tree clauses
, tree child_fn
,
851 tree data_arg
, tree copy_fn
, tree arg_size
,
854 gimple p
= gimple_alloc (GIMPLE_OMP_TASK
, 0);
856 gimple_omp_set_body (p
, body
);
857 gimple_omp_task_set_clauses (p
, clauses
);
858 gimple_omp_task_set_child_fn (p
, child_fn
);
859 gimple_omp_task_set_data_arg (p
, data_arg
);
860 gimple_omp_task_set_copy_fn (p
, copy_fn
);
861 gimple_omp_task_set_arg_size (p
, arg_size
);
862 gimple_omp_task_set_arg_align (p
, arg_align
);
868 /* Build a GIMPLE_OMP_SECTION statement for a sections statement.
870 BODY is the sequence of statements in the section. */
873 gimple_build_omp_section (gimple_seq body
)
875 gimple p
= gimple_alloc (GIMPLE_OMP_SECTION
, 0);
877 gimple_omp_set_body (p
, body
);
883 /* Build a GIMPLE_OMP_MASTER statement.
885 BODY is the sequence of statements to be executed by just the master. */
888 gimple_build_omp_master (gimple_seq body
)
890 gimple p
= gimple_alloc (GIMPLE_OMP_MASTER
, 0);
892 gimple_omp_set_body (p
, body
);
898 /* Build a GIMPLE_OMP_CONTINUE statement.
900 CONTROL_DEF is the definition of the control variable.
901 CONTROL_USE is the use of the control variable. */
904 gimple_build_omp_continue (tree control_def
, tree control_use
)
906 gimple p
= gimple_alloc (GIMPLE_OMP_CONTINUE
, 0);
907 gimple_omp_continue_set_control_def (p
, control_def
);
908 gimple_omp_continue_set_control_use (p
, control_use
);
912 /* Build a GIMPLE_OMP_ORDERED statement.
914 BODY is the sequence of statements inside a loop that will executed in
918 gimple_build_omp_ordered (gimple_seq body
)
920 gimple p
= gimple_alloc (GIMPLE_OMP_ORDERED
, 0);
922 gimple_omp_set_body (p
, body
);
928 /* Build a GIMPLE_OMP_RETURN statement.
929 WAIT_P is true if this is a non-waiting return. */
932 gimple_build_omp_return (bool wait_p
)
934 gimple p
= gimple_alloc (GIMPLE_OMP_RETURN
, 0);
936 gimple_omp_return_set_nowait (p
);
942 /* Build a GIMPLE_OMP_SECTIONS statement.
944 BODY is a sequence of section statements.
945 CLAUSES are any of the OMP sections contsruct's clauses: private,
946 firstprivate, lastprivate, reduction, and nowait. */
949 gimple_build_omp_sections (gimple_seq body
, tree clauses
)
951 gimple p
= gimple_alloc (GIMPLE_OMP_SECTIONS
, 0);
953 gimple_omp_set_body (p
, body
);
954 gimple_omp_sections_set_clauses (p
, clauses
);
960 /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */
963 gimple_build_omp_sections_switch (void)
965 return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH
, 0);
969 /* Build a GIMPLE_OMP_SINGLE statement.
971 BODY is the sequence of statements that will be executed once.
972 CLAUSES are any of the OMP single construct's clauses: private, firstprivate,
973 copyprivate, nowait. */
976 gimple_build_omp_single (gimple_seq body
, tree clauses
)
978 gimple p
= gimple_alloc (GIMPLE_OMP_SINGLE
, 0);
980 gimple_omp_set_body (p
, body
);
981 gimple_omp_single_set_clauses (p
, clauses
);
987 /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */
990 gimple_build_omp_atomic_load (tree lhs
, tree rhs
)
992 gimple p
= gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD
, 0);
993 gimple_omp_atomic_load_set_lhs (p
, lhs
);
994 gimple_omp_atomic_load_set_rhs (p
, rhs
);
998 /* Build a GIMPLE_OMP_ATOMIC_STORE statement.
1000 VAL is the value we are storing. */
1003 gimple_build_omp_atomic_store (tree val
)
1005 gimple p
= gimple_alloc (GIMPLE_OMP_ATOMIC_STORE
, 0);
1006 gimple_omp_atomic_store_set_val (p
, val
);
1010 /* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from
1011 predict.def, OUTCOME is NOT_TAKEN or TAKEN. */
1014 gimple_build_predict (enum br_predictor predictor
, enum prediction outcome
)
1016 gimple p
= gimple_alloc (GIMPLE_PREDICT
, 0);
1017 /* Ensure all the predictors fit into the lower bits of the subcode. */
1018 gcc_assert ((int) END_PREDICTORS
<= GF_PREDICT_TAKEN
);
1019 gimple_predict_set_predictor (p
, predictor
);
1020 gimple_predict_set_outcome (p
, outcome
);
1024 #if defined ENABLE_GIMPLE_CHECKING
1025 /* Complain of a gimple type mismatch and die. */
1028 gimple_check_failed (const_gimple gs
, const char *file
, int line
,
1029 const char *function
, enum gimple_code code
,
1030 enum tree_code subcode
)
1032 internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d",
1033 gimple_code_name
[code
],
1034 tree_code_name
[subcode
],
1035 gimple_code_name
[gimple_code (gs
)],
1036 gs
->gsbase
.subcode
> 0
1037 ? tree_code_name
[gs
->gsbase
.subcode
]
1039 function
, trim_filename (file
), line
);
1041 #endif /* ENABLE_GIMPLE_CHECKING */
1044 /* Allocate a new GIMPLE sequence in GC memory and return it. If
1045 there are free sequences in GIMPLE_SEQ_CACHE return one of those
1049 gimple_seq_alloc (void)
1051 gimple_seq seq
= gimple_seq_cache
;
1054 gimple_seq_cache
= gimple_seq_cache
->next_free
;
1055 gcc_assert (gimple_seq_cache
!= seq
);
1056 memset (seq
, 0, sizeof (*seq
));
1060 seq
= (gimple_seq
) ggc_alloc_cleared (sizeof (*seq
));
1061 #ifdef GATHER_STATISTICS
1062 gimple_alloc_counts
[(int) gimple_alloc_kind_seq
]++;
1063 gimple_alloc_sizes
[(int) gimple_alloc_kind_seq
] += sizeof (*seq
);
1070 /* Return SEQ to the free pool of GIMPLE sequences. */
1073 gimple_seq_free (gimple_seq seq
)
1078 gcc_assert (gimple_seq_first (seq
) == NULL
);
1079 gcc_assert (gimple_seq_last (seq
) == NULL
);
1081 /* If this triggers, it's a sign that the same list is being freed
1083 gcc_assert (seq
!= gimple_seq_cache
|| gimple_seq_cache
== NULL
);
1085 /* Add SEQ to the pool of free sequences. */
1086 seq
->next_free
= gimple_seq_cache
;
1087 gimple_seq_cache
= seq
;
1091 /* Link gimple statement GS to the end of the sequence *SEQ_P. If
1092 *SEQ_P is NULL, a new sequence is allocated. */
1095 gimple_seq_add_stmt (gimple_seq
*seq_p
, gimple gs
)
1097 gimple_stmt_iterator si
;
1103 *seq_p
= gimple_seq_alloc ();
1105 si
= gsi_last (*seq_p
);
1106 gsi_insert_after (&si
, gs
, GSI_NEW_STMT
);
1110 /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is
1111 NULL, a new sequence is allocated. */
1114 gimple_seq_add_seq (gimple_seq
*dst_p
, gimple_seq src
)
1116 gimple_stmt_iterator si
;
1122 *dst_p
= gimple_seq_alloc ();
1124 si
= gsi_last (*dst_p
);
1125 gsi_insert_seq_after (&si
, src
, GSI_NEW_STMT
);
1129 /* Helper function of empty_body_p. Return true if STMT is an empty
1133 empty_stmt_p (gimple stmt
)
1135 if (gimple_code (stmt
) == GIMPLE_NOP
)
1137 if (gimple_code (stmt
) == GIMPLE_BIND
)
1138 return empty_body_p (gimple_bind_body (stmt
));
1143 /* Return true if BODY contains nothing but empty statements. */
1146 empty_body_p (gimple_seq body
)
1148 gimple_stmt_iterator i
;
1150 if (gimple_seq_empty_p (body
))
1152 for (i
= gsi_start (body
); !gsi_end_p (i
); gsi_next (&i
))
1153 if (!empty_stmt_p (gsi_stmt (i
))
1154 && !is_gimple_debug (gsi_stmt (i
)))
1161 /* Perform a deep copy of sequence SRC and return the result. */
1164 gimple_seq_copy (gimple_seq src
)
1166 gimple_stmt_iterator gsi
;
1167 gimple_seq new_seq
= gimple_seq_alloc ();
1170 for (gsi
= gsi_start (src
); !gsi_end_p (gsi
); gsi_next (&gsi
))
1172 stmt
= gimple_copy (gsi_stmt (gsi
));
1173 gimple_seq_add_stmt (&new_seq
, stmt
);
1180 /* Walk all the statements in the sequence SEQ calling walk_gimple_stmt
1181 on each one. WI is as in walk_gimple_stmt.
1183 If walk_gimple_stmt returns non-NULL, the walk is stopped, the
1184 value is stored in WI->CALLBACK_RESULT and the statement that
1185 produced the value is returned.
1187 Otherwise, all the statements are walked and NULL returned. */
1190 walk_gimple_seq (gimple_seq seq
, walk_stmt_fn callback_stmt
,
1191 walk_tree_fn callback_op
, struct walk_stmt_info
*wi
)
1193 gimple_stmt_iterator gsi
;
1195 for (gsi
= gsi_start (seq
); !gsi_end_p (gsi
); gsi_next (&gsi
))
1197 tree ret
= walk_gimple_stmt (&gsi
, callback_stmt
, callback_op
, wi
);
1200 /* If CALLBACK_STMT or CALLBACK_OP return a value, WI must exist
1203 wi
->callback_result
= ret
;
1204 return gsi_stmt (gsi
);
1209 wi
->callback_result
= NULL_TREE
;
1215 /* Helper function for walk_gimple_stmt. Walk operands of a GIMPLE_ASM. */
1218 walk_gimple_asm (gimple stmt
, walk_tree_fn callback_op
,
1219 struct walk_stmt_info
*wi
)
1223 const char **oconstraints
;
1225 const char *constraint
;
1226 bool allows_mem
, allows_reg
, is_inout
;
1228 noutputs
= gimple_asm_noutputs (stmt
);
1229 oconstraints
= (const char **) alloca ((noutputs
) * sizeof (const char *));
1234 for (i
= 0; i
< noutputs
; i
++)
1236 op
= gimple_asm_output_op (stmt
, i
);
1237 constraint
= TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op
)));
1238 oconstraints
[i
] = constraint
;
1239 parse_output_constraint (&constraint
, i
, 0, 0, &allows_mem
, &allows_reg
,
1242 wi
->val_only
= (allows_reg
|| !allows_mem
);
1243 ret
= walk_tree (&TREE_VALUE (op
), callback_op
, wi
, NULL
);
1248 n
= gimple_asm_ninputs (stmt
);
1249 for (i
= 0; i
< n
; i
++)
1251 op
= gimple_asm_input_op (stmt
, i
);
1252 constraint
= TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op
)));
1253 parse_input_constraint (&constraint
, 0, 0, noutputs
, 0,
1254 oconstraints
, &allows_mem
, &allows_reg
);
1257 wi
->val_only
= (allows_reg
|| !allows_mem
);
1258 /* Although input "m" is not really a LHS, we need a lvalue. */
1259 wi
->is_lhs
= !wi
->val_only
;
1261 ret
= walk_tree (&TREE_VALUE (op
), callback_op
, wi
, NULL
);
1269 wi
->val_only
= true;
1272 n
= gimple_asm_nlabels (stmt
);
1273 for (i
= 0; i
< n
; i
++)
1275 op
= gimple_asm_label_op (stmt
, i
);
1276 ret
= walk_tree (&TREE_VALUE (op
), callback_op
, wi
, NULL
);
1285 /* Helper function of WALK_GIMPLE_STMT. Walk every tree operand in
1286 STMT. CALLBACK_OP and WI are as in WALK_GIMPLE_STMT.
1288 CALLBACK_OP is called on each operand of STMT via walk_tree.
1289 Additional parameters to walk_tree must be stored in WI. For each operand
1290 OP, walk_tree is called as:
1292 walk_tree (&OP, CALLBACK_OP, WI, WI->PSET)
1294 If CALLBACK_OP returns non-NULL for an operand, the remaining
1295 operands are not scanned.
1297 The return value is that returned by the last call to walk_tree, or
1298 NULL_TREE if no CALLBACK_OP is specified. */
1301 walk_gimple_op (gimple stmt
, walk_tree_fn callback_op
,
1302 struct walk_stmt_info
*wi
)
1304 struct pointer_set_t
*pset
= (wi
) ? wi
->pset
: NULL
;
1306 tree ret
= NULL_TREE
;
1308 switch (gimple_code (stmt
))
1311 /* Walk the RHS operands. A formal temporary LHS may use a
1312 COMPONENT_REF RHS. */
1314 wi
->val_only
= !is_gimple_reg (gimple_assign_lhs (stmt
))
1315 || !gimple_assign_single_p (stmt
);
1317 for (i
= 1; i
< gimple_num_ops (stmt
); i
++)
1319 ret
= walk_tree (gimple_op_ptr (stmt
, i
), callback_op
, wi
,
1325 /* Walk the LHS. If the RHS is appropriate for a memory, we
1326 may use a COMPONENT_REF on the LHS. */
1329 /* If the RHS has more than 1 operand, it is not appropriate
1331 wi
->val_only
= !is_gimple_mem_rhs (gimple_assign_rhs1 (stmt
))
1332 || !gimple_assign_single_p (stmt
);
1336 ret
= walk_tree (gimple_op_ptr (stmt
, 0), callback_op
, wi
, pset
);
1342 wi
->val_only
= true;
1351 ret
= walk_tree (gimple_call_chain_ptr (stmt
), callback_op
, wi
, pset
);
1355 ret
= walk_tree (gimple_call_fn_ptr (stmt
), callback_op
, wi
, pset
);
1359 for (i
= 0; i
< gimple_call_num_args (stmt
); i
++)
1361 ret
= walk_tree (gimple_call_arg_ptr (stmt
, i
), callback_op
, wi
,
1370 ret
= walk_tree (gimple_call_lhs_ptr (stmt
), callback_op
, wi
, pset
);
1379 ret
= walk_tree (gimple_catch_types_ptr (stmt
), callback_op
, wi
,
1385 case GIMPLE_EH_FILTER
:
1386 ret
= walk_tree (gimple_eh_filter_types_ptr (stmt
), callback_op
, wi
,
1393 ret
= walk_gimple_asm (stmt
, callback_op
, wi
);
1398 case GIMPLE_OMP_CONTINUE
:
1399 ret
= walk_tree (gimple_omp_continue_control_def_ptr (stmt
),
1400 callback_op
, wi
, pset
);
1404 ret
= walk_tree (gimple_omp_continue_control_use_ptr (stmt
),
1405 callback_op
, wi
, pset
);
1410 case GIMPLE_OMP_CRITICAL
:
1411 ret
= walk_tree (gimple_omp_critical_name_ptr (stmt
), callback_op
, wi
,
1417 case GIMPLE_OMP_FOR
:
1418 ret
= walk_tree (gimple_omp_for_clauses_ptr (stmt
), callback_op
, wi
,
1422 for (i
= 0; i
< gimple_omp_for_collapse (stmt
); i
++)
1424 ret
= walk_tree (gimple_omp_for_index_ptr (stmt
, i
), callback_op
,
1428 ret
= walk_tree (gimple_omp_for_initial_ptr (stmt
, i
), callback_op
,
1432 ret
= walk_tree (gimple_omp_for_final_ptr (stmt
, i
), callback_op
,
1436 ret
= walk_tree (gimple_omp_for_incr_ptr (stmt
, i
), callback_op
,
1443 case GIMPLE_OMP_PARALLEL
:
1444 ret
= walk_tree (gimple_omp_parallel_clauses_ptr (stmt
), callback_op
,
1448 ret
= walk_tree (gimple_omp_parallel_child_fn_ptr (stmt
), callback_op
,
1452 ret
= walk_tree (gimple_omp_parallel_data_arg_ptr (stmt
), callback_op
,
1458 case GIMPLE_OMP_TASK
:
1459 ret
= walk_tree (gimple_omp_task_clauses_ptr (stmt
), callback_op
,
1463 ret
= walk_tree (gimple_omp_task_child_fn_ptr (stmt
), callback_op
,
1467 ret
= walk_tree (gimple_omp_task_data_arg_ptr (stmt
), callback_op
,
1471 ret
= walk_tree (gimple_omp_task_copy_fn_ptr (stmt
), callback_op
,
1475 ret
= walk_tree (gimple_omp_task_arg_size_ptr (stmt
), callback_op
,
1479 ret
= walk_tree (gimple_omp_task_arg_align_ptr (stmt
), callback_op
,
1485 case GIMPLE_OMP_SECTIONS
:
1486 ret
= walk_tree (gimple_omp_sections_clauses_ptr (stmt
), callback_op
,
1491 ret
= walk_tree (gimple_omp_sections_control_ptr (stmt
), callback_op
,
1498 case GIMPLE_OMP_SINGLE
:
1499 ret
= walk_tree (gimple_omp_single_clauses_ptr (stmt
), callback_op
, wi
,
1505 case GIMPLE_OMP_ATOMIC_LOAD
:
1506 ret
= walk_tree (gimple_omp_atomic_load_lhs_ptr (stmt
), callback_op
, wi
,
1511 ret
= walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt
), callback_op
, wi
,
1517 case GIMPLE_OMP_ATOMIC_STORE
:
1518 ret
= walk_tree (gimple_omp_atomic_store_val_ptr (stmt
), callback_op
,
1524 /* Tuples that do not have operands. */
1527 case GIMPLE_OMP_RETURN
:
1528 case GIMPLE_PREDICT
:
1533 enum gimple_statement_structure_enum gss
;
1534 gss
= gimple_statement_structure (stmt
);
1535 if (gss
== GSS_WITH_OPS
|| gss
== GSS_WITH_MEM_OPS
)
1536 for (i
= 0; i
< gimple_num_ops (stmt
); i
++)
1538 ret
= walk_tree (gimple_op_ptr (stmt
, i
), callback_op
, wi
, pset
);
1550 /* Walk the current statement in GSI (optionally using traversal state
1551 stored in WI). If WI is NULL, no state is kept during traversal.
1552 The callback CALLBACK_STMT is called. If CALLBACK_STMT indicates
1553 that it has handled all the operands of the statement, its return
1554 value is returned. Otherwise, the return value from CALLBACK_STMT
1555 is discarded and its operands are scanned.
1557 If CALLBACK_STMT is NULL or it didn't handle the operands,
1558 CALLBACK_OP is called on each operand of the statement via
1559 walk_gimple_op. If walk_gimple_op returns non-NULL for any
1560 operand, the remaining operands are not scanned. In this case, the
1561 return value from CALLBACK_OP is returned.
1563 In any other case, NULL_TREE is returned. */
1566 walk_gimple_stmt (gimple_stmt_iterator
*gsi
, walk_stmt_fn callback_stmt
,
1567 walk_tree_fn callback_op
, struct walk_stmt_info
*wi
)
1571 gimple stmt
= gsi_stmt (*gsi
);
1576 if (wi
&& wi
->want_locations
&& gimple_has_location (stmt
))
1577 input_location
= gimple_location (stmt
);
1581 /* Invoke the statement callback. Return if the callback handled
1582 all of STMT operands by itself. */
1585 bool handled_ops
= false;
1586 tree_ret
= callback_stmt (gsi
, &handled_ops
, wi
);
1590 /* If CALLBACK_STMT did not handle operands, it should not have
1591 a value to return. */
1592 gcc_assert (tree_ret
== NULL
);
1594 /* Re-read stmt in case the callback changed it. */
1595 stmt
= gsi_stmt (*gsi
);
1598 /* If CALLBACK_OP is defined, invoke it on every operand of STMT. */
1601 tree_ret
= walk_gimple_op (stmt
, callback_op
, wi
);
1606 /* If STMT can have statements inside (e.g. GIMPLE_BIND), walk them. */
1607 switch (gimple_code (stmt
))
1610 ret
= walk_gimple_seq (gimple_bind_body (stmt
), callback_stmt
,
1613 return wi
->callback_result
;
1617 ret
= walk_gimple_seq (gimple_catch_handler (stmt
), callback_stmt
,
1620 return wi
->callback_result
;
1623 case GIMPLE_EH_FILTER
:
1624 ret
= walk_gimple_seq (gimple_eh_filter_failure (stmt
), callback_stmt
,
1627 return wi
->callback_result
;
1631 ret
= walk_gimple_seq (gimple_try_eval (stmt
), callback_stmt
, callback_op
,
1634 return wi
->callback_result
;
1636 ret
= walk_gimple_seq (gimple_try_cleanup (stmt
), callback_stmt
,
1639 return wi
->callback_result
;
1642 case GIMPLE_OMP_FOR
:
1643 ret
= walk_gimple_seq (gimple_omp_for_pre_body (stmt
), callback_stmt
,
1646 return wi
->callback_result
;
1649 case GIMPLE_OMP_CRITICAL
:
1650 case GIMPLE_OMP_MASTER
:
1651 case GIMPLE_OMP_ORDERED
:
1652 case GIMPLE_OMP_SECTION
:
1653 case GIMPLE_OMP_PARALLEL
:
1654 case GIMPLE_OMP_TASK
:
1655 case GIMPLE_OMP_SECTIONS
:
1656 case GIMPLE_OMP_SINGLE
:
1657 ret
= walk_gimple_seq (gimple_omp_body (stmt
), callback_stmt
, callback_op
,
1660 return wi
->callback_result
;
1663 case GIMPLE_WITH_CLEANUP_EXPR
:
1664 ret
= walk_gimple_seq (gimple_wce_cleanup (stmt
), callback_stmt
,
1667 return wi
->callback_result
;
1671 gcc_assert (!gimple_has_substatements (stmt
));
1679 /* Set sequence SEQ to be the GIMPLE body for function FN. */
1682 gimple_set_body (tree fndecl
, gimple_seq seq
)
1684 struct function
*fn
= DECL_STRUCT_FUNCTION (fndecl
);
1687 /* If FNDECL still does not have a function structure associated
1688 with it, then it does not make sense for it to receive a
1690 gcc_assert (seq
== NULL
);
1693 fn
->gimple_body
= seq
;
1697 /* Return the body of GIMPLE statements for function FN. */
1700 gimple_body (tree fndecl
)
1702 struct function
*fn
= DECL_STRUCT_FUNCTION (fndecl
);
1703 return fn
? fn
->gimple_body
: NULL
;
1706 /* Return true when FNDECL has Gimple body either in unlowered
1709 gimple_has_body_p (tree fndecl
)
1711 struct function
*fn
= DECL_STRUCT_FUNCTION (fndecl
);
1712 return (gimple_body (fndecl
) || (fn
&& fn
->cfg
));
1715 /* Detect flags from a GIMPLE_CALL. This is just like
1716 call_expr_flags, but for gimple tuples. */
1719 gimple_call_flags (const_gimple stmt
)
1722 tree decl
= gimple_call_fndecl (stmt
);
1726 flags
= flags_from_decl_or_type (decl
);
1729 t
= TREE_TYPE (gimple_call_fn (stmt
));
1730 if (t
&& TREE_CODE (t
) == POINTER_TYPE
)
1731 flags
= flags_from_decl_or_type (TREE_TYPE (t
));
1740 /* Return true if GS is a copy assignment. */
1743 gimple_assign_copy_p (gimple gs
)
1745 return gimple_code (gs
) == GIMPLE_ASSIGN
1746 && get_gimple_rhs_class (gimple_assign_rhs_code (gs
))
1747 == GIMPLE_SINGLE_RHS
1748 && is_gimple_val (gimple_op (gs
, 1));
1752 /* Return true if GS is a SSA_NAME copy assignment. */
1755 gimple_assign_ssa_name_copy_p (gimple gs
)
1757 return (gimple_code (gs
) == GIMPLE_ASSIGN
1758 && (get_gimple_rhs_class (gimple_assign_rhs_code (gs
))
1759 == GIMPLE_SINGLE_RHS
)
1760 && TREE_CODE (gimple_assign_lhs (gs
)) == SSA_NAME
1761 && TREE_CODE (gimple_assign_rhs1 (gs
)) == SSA_NAME
);
1765 /* Return true if GS is an assignment with a singleton RHS, i.e.,
1766 there is no operator associated with the assignment itself.
1767 Unlike gimple_assign_copy_p, this predicate returns true for
1768 any RHS operand, including those that perform an operation
1769 and do not have the semantics of a copy, such as COND_EXPR. */
1772 gimple_assign_single_p (gimple gs
)
1774 return (gimple_code (gs
) == GIMPLE_ASSIGN
1775 && get_gimple_rhs_class (gimple_assign_rhs_code (gs
))
1776 == GIMPLE_SINGLE_RHS
);
1779 /* Return true if GS is an assignment with a unary RHS, but the
1780 operator has no effect on the assigned value. The logic is adapted
1781 from STRIP_NOPS. This predicate is intended to be used in tuplifying
1782 instances in which STRIP_NOPS was previously applied to the RHS of
1785 NOTE: In the use cases that led to the creation of this function
1786 and of gimple_assign_single_p, it is typical to test for either
1787 condition and to proceed in the same manner. In each case, the
1788 assigned value is represented by the single RHS operand of the
1789 assignment. I suspect there may be cases where gimple_assign_copy_p,
1790 gimple_assign_single_p, or equivalent logic is used where a similar
1791 treatment of unary NOPs is appropriate. */
1794 gimple_assign_unary_nop_p (gimple gs
)
1796 return (gimple_code (gs
) == GIMPLE_ASSIGN
1797 && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs
))
1798 || gimple_assign_rhs_code (gs
) == NON_LVALUE_EXPR
)
1799 && gimple_assign_rhs1 (gs
) != error_mark_node
1800 && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs
)))
1801 == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs
)))));
1804 /* Set BB to be the basic block holding G. */
1807 gimple_set_bb (gimple stmt
, basic_block bb
)
1809 stmt
->gsbase
.bb
= bb
;
1811 /* If the statement is a label, add the label to block-to-labels map
1812 so that we can speed up edge creation for GIMPLE_GOTOs. */
1813 if (cfun
->cfg
&& gimple_code (stmt
) == GIMPLE_LABEL
)
1818 t
= gimple_label_label (stmt
);
1819 uid
= LABEL_DECL_UID (t
);
1822 unsigned old_len
= VEC_length (basic_block
, label_to_block_map
);
1823 LABEL_DECL_UID (t
) = uid
= cfun
->cfg
->last_label_uid
++;
1824 if (old_len
<= (unsigned) uid
)
1826 unsigned new_len
= 3 * uid
/ 2 + 1;
1828 VEC_safe_grow_cleared (basic_block
, gc
, label_to_block_map
,
1833 VEC_replace (basic_block
, label_to_block_map
, uid
, bb
);
1838 /* Fold the expression computed by STMT. If the expression can be
1839 folded, return the folded result, otherwise return NULL. STMT is
1843 gimple_fold (const_gimple stmt
)
1845 location_t loc
= gimple_location (stmt
);
1846 switch (gimple_code (stmt
))
1849 return fold_binary_loc (loc
, gimple_cond_code (stmt
),
1851 gimple_cond_lhs (stmt
),
1852 gimple_cond_rhs (stmt
));
1855 switch (get_gimple_rhs_class (gimple_assign_rhs_code (stmt
)))
1857 case GIMPLE_UNARY_RHS
:
1858 return fold_unary_loc (loc
, gimple_assign_rhs_code (stmt
),
1859 TREE_TYPE (gimple_assign_lhs (stmt
)),
1860 gimple_assign_rhs1 (stmt
));
1861 case GIMPLE_BINARY_RHS
:
1862 return fold_binary_loc (loc
, gimple_assign_rhs_code (stmt
),
1863 TREE_TYPE (gimple_assign_lhs (stmt
)),
1864 gimple_assign_rhs1 (stmt
),
1865 gimple_assign_rhs2 (stmt
));
1866 case GIMPLE_SINGLE_RHS
:
1867 return fold (gimple_assign_rhs1 (stmt
));
1873 return gimple_switch_index (stmt
);
1886 /* Modify the RHS of the assignment pointed-to by GSI using the
1887 operands in the expression tree EXPR.
1889 NOTE: The statement pointed-to by GSI may be reallocated if it
1890 did not have enough operand slots.
1892 This function is useful to convert an existing tree expression into
1893 the flat representation used for the RHS of a GIMPLE assignment.
1894 It will reallocate memory as needed to expand or shrink the number
1895 of operand slots needed to represent EXPR.
1897 NOTE: If you find yourself building a tree and then calling this
1898 function, you are most certainly doing it the slow way. It is much
1899 better to build a new assignment or to use the function
1900 gimple_assign_set_rhs_with_ops, which does not require an
1901 expression tree to be built. */
1904 gimple_assign_set_rhs_from_tree (gimple_stmt_iterator
*gsi
, tree expr
)
1906 enum tree_code subcode
;
1909 extract_ops_from_tree (expr
, &subcode
, &op1
, &op2
);
1910 gimple_assign_set_rhs_with_ops (gsi
, subcode
, op1
, op2
);
1914 /* Set the RHS of assignment statement pointed-to by GSI to CODE with
1915 operands OP1 and OP2.
1917 NOTE: The statement pointed-to by GSI may be reallocated if it
1918 did not have enough operand slots. */
1921 gimple_assign_set_rhs_with_ops (gimple_stmt_iterator
*gsi
, enum tree_code code
,
1924 unsigned new_rhs_ops
= get_gimple_rhs_num_ops (code
);
1925 gimple stmt
= gsi_stmt (*gsi
);
1927 /* If the new CODE needs more operands, allocate a new statement. */
1928 if (gimple_num_ops (stmt
) < new_rhs_ops
+ 1)
1930 tree lhs
= gimple_assign_lhs (stmt
);
1931 gimple new_stmt
= gimple_alloc (gimple_code (stmt
), new_rhs_ops
+ 1);
1932 memcpy (new_stmt
, stmt
, gimple_size (gimple_code (stmt
)));
1933 gsi_replace (gsi
, new_stmt
, true);
1936 /* The LHS needs to be reset as this also changes the SSA name
1938 gimple_assign_set_lhs (stmt
, lhs
);
1941 gimple_set_num_ops (stmt
, new_rhs_ops
+ 1);
1942 gimple_set_subcode (stmt
, code
);
1943 gimple_assign_set_rhs1 (stmt
, op1
);
1944 if (new_rhs_ops
> 1)
1945 gimple_assign_set_rhs2 (stmt
, op2
);
1949 /* Return the LHS of a statement that performs an assignment,
1950 either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE
1951 for a call to a function that returns no value, or for a
1952 statement other than an assignment or a call. */
1955 gimple_get_lhs (const_gimple stmt
)
1957 enum gimple_code code
= gimple_code (stmt
);
1959 if (code
== GIMPLE_ASSIGN
)
1960 return gimple_assign_lhs (stmt
);
1961 else if (code
== GIMPLE_CALL
)
1962 return gimple_call_lhs (stmt
);
1968 /* Set the LHS of a statement that performs an assignment,
1969 either a GIMPLE_ASSIGN or a GIMPLE_CALL. */
1972 gimple_set_lhs (gimple stmt
, tree lhs
)
1974 enum gimple_code code
= gimple_code (stmt
);
1976 if (code
== GIMPLE_ASSIGN
)
1977 gimple_assign_set_lhs (stmt
, lhs
);
1978 else if (code
== GIMPLE_CALL
)
1979 gimple_call_set_lhs (stmt
, lhs
);
1985 /* Return a deep copy of statement STMT. All the operands from STMT
1986 are reallocated and copied using unshare_expr. The DEF, USE, VDEF
1987 and VUSE operand arrays are set to empty in the new copy. */
1990 gimple_copy (gimple stmt
)
1992 enum gimple_code code
= gimple_code (stmt
);
1993 unsigned num_ops
= gimple_num_ops (stmt
);
1994 gimple copy
= gimple_alloc (code
, num_ops
);
1997 /* Shallow copy all the fields from STMT. */
1998 memcpy (copy
, stmt
, gimple_size (code
));
2000 /* If STMT has sub-statements, deep-copy them as well. */
2001 if (gimple_has_substatements (stmt
))
2006 switch (gimple_code (stmt
))
2009 new_seq
= gimple_seq_copy (gimple_bind_body (stmt
));
2010 gimple_bind_set_body (copy
, new_seq
);
2011 gimple_bind_set_vars (copy
, unshare_expr (gimple_bind_vars (stmt
)));
2012 gimple_bind_set_block (copy
, gimple_bind_block (stmt
));
2016 new_seq
= gimple_seq_copy (gimple_catch_handler (stmt
));
2017 gimple_catch_set_handler (copy
, new_seq
);
2018 t
= unshare_expr (gimple_catch_types (stmt
));
2019 gimple_catch_set_types (copy
, t
);
2022 case GIMPLE_EH_FILTER
:
2023 new_seq
= gimple_seq_copy (gimple_eh_filter_failure (stmt
));
2024 gimple_eh_filter_set_failure (copy
, new_seq
);
2025 t
= unshare_expr (gimple_eh_filter_types (stmt
));
2026 gimple_eh_filter_set_types (copy
, t
);
2030 new_seq
= gimple_seq_copy (gimple_try_eval (stmt
));
2031 gimple_try_set_eval (copy
, new_seq
);
2032 new_seq
= gimple_seq_copy (gimple_try_cleanup (stmt
));
2033 gimple_try_set_cleanup (copy
, new_seq
);
2036 case GIMPLE_OMP_FOR
:
2037 new_seq
= gimple_seq_copy (gimple_omp_for_pre_body (stmt
));
2038 gimple_omp_for_set_pre_body (copy
, new_seq
);
2039 t
= unshare_expr (gimple_omp_for_clauses (stmt
));
2040 gimple_omp_for_set_clauses (copy
, t
);
2041 copy
->gimple_omp_for
.iter
2042 = GGC_NEWVEC (struct gimple_omp_for_iter
,
2043 gimple_omp_for_collapse (stmt
));
2044 for (i
= 0; i
< gimple_omp_for_collapse (stmt
); i
++)
2046 gimple_omp_for_set_cond (copy
, i
,
2047 gimple_omp_for_cond (stmt
, i
));
2048 gimple_omp_for_set_index (copy
, i
,
2049 gimple_omp_for_index (stmt
, i
));
2050 t
= unshare_expr (gimple_omp_for_initial (stmt
, i
));
2051 gimple_omp_for_set_initial (copy
, i
, t
);
2052 t
= unshare_expr (gimple_omp_for_final (stmt
, i
));
2053 gimple_omp_for_set_final (copy
, i
, t
);
2054 t
= unshare_expr (gimple_omp_for_incr (stmt
, i
));
2055 gimple_omp_for_set_incr (copy
, i
, t
);
2059 case GIMPLE_OMP_PARALLEL
:
2060 t
= unshare_expr (gimple_omp_parallel_clauses (stmt
));
2061 gimple_omp_parallel_set_clauses (copy
, t
);
2062 t
= unshare_expr (gimple_omp_parallel_child_fn (stmt
));
2063 gimple_omp_parallel_set_child_fn (copy
, t
);
2064 t
= unshare_expr (gimple_omp_parallel_data_arg (stmt
));
2065 gimple_omp_parallel_set_data_arg (copy
, t
);
2068 case GIMPLE_OMP_TASK
:
2069 t
= unshare_expr (gimple_omp_task_clauses (stmt
));
2070 gimple_omp_task_set_clauses (copy
, t
);
2071 t
= unshare_expr (gimple_omp_task_child_fn (stmt
));
2072 gimple_omp_task_set_child_fn (copy
, t
);
2073 t
= unshare_expr (gimple_omp_task_data_arg (stmt
));
2074 gimple_omp_task_set_data_arg (copy
, t
);
2075 t
= unshare_expr (gimple_omp_task_copy_fn (stmt
));
2076 gimple_omp_task_set_copy_fn (copy
, t
);
2077 t
= unshare_expr (gimple_omp_task_arg_size (stmt
));
2078 gimple_omp_task_set_arg_size (copy
, t
);
2079 t
= unshare_expr (gimple_omp_task_arg_align (stmt
));
2080 gimple_omp_task_set_arg_align (copy
, t
);
2083 case GIMPLE_OMP_CRITICAL
:
2084 t
= unshare_expr (gimple_omp_critical_name (stmt
));
2085 gimple_omp_critical_set_name (copy
, t
);
2088 case GIMPLE_OMP_SECTIONS
:
2089 t
= unshare_expr (gimple_omp_sections_clauses (stmt
));
2090 gimple_omp_sections_set_clauses (copy
, t
);
2091 t
= unshare_expr (gimple_omp_sections_control (stmt
));
2092 gimple_omp_sections_set_control (copy
, t
);
2095 case GIMPLE_OMP_SINGLE
:
2096 case GIMPLE_OMP_SECTION
:
2097 case GIMPLE_OMP_MASTER
:
2098 case GIMPLE_OMP_ORDERED
:
2100 new_seq
= gimple_seq_copy (gimple_omp_body (stmt
));
2101 gimple_omp_set_body (copy
, new_seq
);
2104 case GIMPLE_WITH_CLEANUP_EXPR
:
2105 new_seq
= gimple_seq_copy (gimple_wce_cleanup (stmt
));
2106 gimple_wce_set_cleanup (copy
, new_seq
);
2114 /* Make copy of operands. */
2117 for (i
= 0; i
< num_ops
; i
++)
2118 gimple_set_op (copy
, i
, unshare_expr (gimple_op (stmt
, i
)));
2120 /* Clear out SSA operand vectors on COPY. */
2121 if (gimple_has_ops (stmt
))
2123 gimple_set_def_ops (copy
, NULL
);
2124 gimple_set_use_ops (copy
, NULL
);
2127 if (gimple_has_mem_ops (stmt
))
2129 gimple_set_vdef (copy
, gimple_vdef (stmt
));
2130 gimple_set_vuse (copy
, gimple_vuse (stmt
));
2133 /* SSA operands need to be updated. */
2134 gimple_set_modified (copy
, true);
2141 /* Set the MODIFIED flag to MODIFIEDP, iff the gimple statement G has
2142 a MODIFIED field. */
2145 gimple_set_modified (gimple s
, bool modifiedp
)
2147 if (gimple_has_ops (s
))
2149 s
->gsbase
.modified
= (unsigned) modifiedp
;
2153 && is_gimple_call (s
)
2154 && gimple_call_noreturn_p (s
))
2155 VEC_safe_push (gimple
, gc
, MODIFIED_NORETURN_CALLS (cfun
), s
);
2160 /* Return true if statement S has side-effects. We consider a
2161 statement to have side effects if:
2163 - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST.
2164 - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */
2167 gimple_has_side_effects (const_gimple s
)
2171 if (is_gimple_debug (s
))
2174 /* We don't have to scan the arguments to check for
2175 volatile arguments, though, at present, we still
2176 do a scan to check for TREE_SIDE_EFFECTS. */
2177 if (gimple_has_volatile_ops (s
))
2180 if (is_gimple_call (s
))
2182 unsigned nargs
= gimple_call_num_args (s
);
2184 if (!(gimple_call_flags (s
) & (ECF_CONST
| ECF_PURE
)))
2186 else if (gimple_call_flags (s
) & ECF_LOOPING_CONST_OR_PURE
)
2187 /* An infinite loop is considered a side effect. */
2190 if (gimple_call_lhs (s
)
2191 && TREE_SIDE_EFFECTS (gimple_call_lhs (s
)))
2193 gcc_assert (gimple_has_volatile_ops (s
));
2197 if (TREE_SIDE_EFFECTS (gimple_call_fn (s
)))
2200 for (i
= 0; i
< nargs
; i
++)
2201 if (TREE_SIDE_EFFECTS (gimple_call_arg (s
, i
)))
2203 gcc_assert (gimple_has_volatile_ops (s
));
2211 for (i
= 0; i
< gimple_num_ops (s
); i
++)
2212 if (TREE_SIDE_EFFECTS (gimple_op (s
, i
)))
2214 gcc_assert (gimple_has_volatile_ops (s
));
2222 /* Return true if the RHS of statement S has side effects.
2223 We may use it to determine if it is admissable to replace
2224 an assignment or call with a copy of a previously-computed
2225 value. In such cases, side-effects due the the LHS are
2229 gimple_rhs_has_side_effects (const_gimple s
)
2233 if (is_gimple_call (s
))
2235 unsigned nargs
= gimple_call_num_args (s
);
2237 if (!(gimple_call_flags (s
) & (ECF_CONST
| ECF_PURE
)))
2240 /* We cannot use gimple_has_volatile_ops here,
2241 because we must ignore a volatile LHS. */
2242 if (TREE_SIDE_EFFECTS (gimple_call_fn (s
))
2243 || TREE_THIS_VOLATILE (gimple_call_fn (s
)))
2245 gcc_assert (gimple_has_volatile_ops (s
));
2249 for (i
= 0; i
< nargs
; i
++)
2250 if (TREE_SIDE_EFFECTS (gimple_call_arg (s
, i
))
2251 || TREE_THIS_VOLATILE (gimple_call_arg (s
, i
)))
2256 else if (is_gimple_assign (s
))
2258 /* Skip the first operand, the LHS. */
2259 for (i
= 1; i
< gimple_num_ops (s
); i
++)
2260 if (TREE_SIDE_EFFECTS (gimple_op (s
, i
))
2261 || TREE_THIS_VOLATILE (gimple_op (s
, i
)))
2263 gcc_assert (gimple_has_volatile_ops (s
));
2267 else if (is_gimple_debug (s
))
2271 /* For statements without an LHS, examine all arguments. */
2272 for (i
= 0; i
< gimple_num_ops (s
); i
++)
2273 if (TREE_SIDE_EFFECTS (gimple_op (s
, i
))
2274 || TREE_THIS_VOLATILE (gimple_op (s
, i
)))
2276 gcc_assert (gimple_has_volatile_ops (s
));
2285 /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p.
2286 Return true if S can trap. If INCLUDE_LHS is true and S is a
2287 GIMPLE_ASSIGN, the LHS of the assignment is also checked.
2288 Otherwise, only the RHS of the assignment is checked. */
2291 gimple_could_trap_p_1 (gimple s
, bool include_lhs
)
2294 tree t
, div
= NULL_TREE
;
2297 start
= (is_gimple_assign (s
) && !include_lhs
) ? 1 : 0;
2299 for (i
= start
; i
< gimple_num_ops (s
); i
++)
2300 if (tree_could_trap_p (gimple_op (s
, i
)))
2303 switch (gimple_code (s
))
2306 return gimple_asm_volatile_p (s
);
2309 t
= gimple_call_fndecl (s
);
2310 /* Assume that calls to weak functions may trap. */
2311 if (!t
|| !DECL_P (t
) || DECL_WEAK (t
))
2316 t
= gimple_expr_type (s
);
2317 op
= gimple_assign_rhs_code (s
);
2318 if (get_gimple_rhs_class (op
) == GIMPLE_BINARY_RHS
)
2319 div
= gimple_assign_rhs2 (s
);
2320 return (operation_could_trap_p (op
, FLOAT_TYPE_P (t
),
2321 (INTEGRAL_TYPE_P (t
)
2322 && TYPE_OVERFLOW_TRAPS (t
)),
2334 /* Return true if statement S can trap. */
2337 gimple_could_trap_p (gimple s
)
2339 return gimple_could_trap_p_1 (s
, true);
2343 /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */
2346 gimple_assign_rhs_could_trap_p (gimple s
)
2348 gcc_assert (is_gimple_assign (s
));
2349 return gimple_could_trap_p_1 (s
, false);
2353 /* Print debugging information for gimple stmts generated. */
2356 dump_gimple_statistics (void)
2358 #ifdef GATHER_STATISTICS
2359 int i
, total_tuples
= 0, total_bytes
= 0;
2361 fprintf (stderr
, "\nGIMPLE statements\n");
2362 fprintf (stderr
, "Kind Stmts Bytes\n");
2363 fprintf (stderr
, "---------------------------------------\n");
2364 for (i
= 0; i
< (int) gimple_alloc_kind_all
; ++i
)
2366 fprintf (stderr
, "%-20s %7d %10d\n", gimple_alloc_kind_names
[i
],
2367 gimple_alloc_counts
[i
], gimple_alloc_sizes
[i
]);
2368 total_tuples
+= gimple_alloc_counts
[i
];
2369 total_bytes
+= gimple_alloc_sizes
[i
];
2371 fprintf (stderr
, "---------------------------------------\n");
2372 fprintf (stderr
, "%-20s %7d %10d\n", "Total", total_tuples
, total_bytes
);
2373 fprintf (stderr
, "---------------------------------------\n");
2375 fprintf (stderr
, "No gimple statistics\n");
2380 /* Return the number of operands needed on the RHS of a GIMPLE
2381 assignment for an expression with tree code CODE. */
2384 get_gimple_rhs_num_ops (enum tree_code code
)
2386 enum gimple_rhs_class rhs_class
= get_gimple_rhs_class (code
);
2388 if (rhs_class
== GIMPLE_UNARY_RHS
|| rhs_class
== GIMPLE_SINGLE_RHS
)
2390 else if (rhs_class
== GIMPLE_BINARY_RHS
)
2396 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \
2398 ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \
2399 : ((TYPE) == tcc_binary \
2400 || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \
2401 : ((TYPE) == tcc_constant \
2402 || (TYPE) == tcc_declaration \
2403 || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \
2404 : ((SYM) == TRUTH_AND_EXPR \
2405 || (SYM) == TRUTH_OR_EXPR \
2406 || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \
2407 : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \
2408 : ((SYM) == COND_EXPR \
2409 || (SYM) == CONSTRUCTOR \
2410 || (SYM) == OBJ_TYPE_REF \
2411 || (SYM) == ASSERT_EXPR \
2412 || (SYM) == ADDR_EXPR \
2413 || (SYM) == WITH_SIZE_EXPR \
2414 || (SYM) == SSA_NAME \
2415 || (SYM) == POLYNOMIAL_CHREC \
2416 || (SYM) == DOT_PROD_EXPR \
2417 || (SYM) == VEC_COND_EXPR \
2418 || (SYM) == REALIGN_LOAD_EXPR) ? GIMPLE_SINGLE_RHS \
2419 : GIMPLE_INVALID_RHS),
2420 #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS,
2422 const unsigned char gimple_rhs_class_table
[] = {
2423 #include "all-tree.def"
2427 #undef END_OF_BASE_TREE_CODES
2429 /* For the definitive definition of GIMPLE, see doc/tree-ssa.texi. */
2431 /* Validation of GIMPLE expressions. */
2433 /* Return true if OP is an acceptable tree node to be used as a GIMPLE
2437 is_gimple_operand (const_tree op
)
2439 return op
&& get_gimple_rhs_class (TREE_CODE (op
)) == GIMPLE_SINGLE_RHS
;
2442 /* Returns true iff T is a valid RHS for an assignment to a renamed
2443 user -- or front-end generated artificial -- variable. */
2446 is_gimple_reg_rhs (tree t
)
2448 return get_gimple_rhs_class (TREE_CODE (t
)) != GIMPLE_INVALID_RHS
;
2451 /* Returns true iff T is a valid RHS for an assignment to an un-renamed
2452 LHS, or for a call argument. */
2455 is_gimple_mem_rhs (tree t
)
2457 /* If we're dealing with a renamable type, either source or dest must be
2458 a renamed variable. */
2459 if (is_gimple_reg_type (TREE_TYPE (t
)))
2460 return is_gimple_val (t
);
2462 return is_gimple_val (t
) || is_gimple_lvalue (t
);
2465 /* Return true if T is a valid LHS for a GIMPLE assignment expression. */
2468 is_gimple_lvalue (tree t
)
2470 return (is_gimple_addressable (t
)
2471 || TREE_CODE (t
) == WITH_SIZE_EXPR
2472 /* These are complex lvalues, but don't have addresses, so they
2474 || TREE_CODE (t
) == BIT_FIELD_REF
);
2477 /* Return true if T is a GIMPLE condition. */
2480 is_gimple_condexpr (tree t
)
2482 return (is_gimple_val (t
) || (COMPARISON_CLASS_P (t
)
2483 && !tree_could_trap_p (t
)
2484 && is_gimple_val (TREE_OPERAND (t
, 0))
2485 && is_gimple_val (TREE_OPERAND (t
, 1))));
2488 /* Return true if T is something whose address can be taken. */
2491 is_gimple_addressable (tree t
)
2493 return (is_gimple_id (t
) || handled_component_p (t
) || INDIRECT_REF_P (t
));
2496 /* Return true if T is a valid gimple constant. */
2499 is_gimple_constant (const_tree t
)
2501 switch (TREE_CODE (t
))
2511 /* Vector constant constructors are gimple invariant. */
2513 if (TREE_TYPE (t
) && TREE_CODE (TREE_TYPE (t
)) == VECTOR_TYPE
)
2514 return TREE_CONSTANT (t
);
2523 /* Return true if T is a gimple address. */
2526 is_gimple_address (const_tree t
)
2530 if (TREE_CODE (t
) != ADDR_EXPR
)
2533 op
= TREE_OPERAND (t
, 0);
2534 while (handled_component_p (op
))
2536 if ((TREE_CODE (op
) == ARRAY_REF
2537 || TREE_CODE (op
) == ARRAY_RANGE_REF
)
2538 && !is_gimple_val (TREE_OPERAND (op
, 1)))
2541 op
= TREE_OPERAND (op
, 0);
2544 if (CONSTANT_CLASS_P (op
) || INDIRECT_REF_P (op
))
2547 switch (TREE_CODE (op
))
2562 /* Strip out all handled components that produce invariant
2566 strip_invariant_refs (const_tree op
)
2568 while (handled_component_p (op
))
2570 switch (TREE_CODE (op
))
2573 case ARRAY_RANGE_REF
:
2574 if (!is_gimple_constant (TREE_OPERAND (op
, 1))
2575 || TREE_OPERAND (op
, 2) != NULL_TREE
2576 || TREE_OPERAND (op
, 3) != NULL_TREE
)
2581 if (TREE_OPERAND (op
, 2) != NULL_TREE
)
2587 op
= TREE_OPERAND (op
, 0);
2593 /* Return true if T is a gimple invariant address. */
2596 is_gimple_invariant_address (const_tree t
)
2600 if (TREE_CODE (t
) != ADDR_EXPR
)
2603 op
= strip_invariant_refs (TREE_OPERAND (t
, 0));
2605 return op
&& (CONSTANT_CLASS_P (op
) || decl_address_invariant_p (op
));
2608 /* Return true if T is a gimple invariant address at IPA level
2609 (so addresses of variables on stack are not allowed). */
2612 is_gimple_ip_invariant_address (const_tree t
)
2616 if (TREE_CODE (t
) != ADDR_EXPR
)
2619 op
= strip_invariant_refs (TREE_OPERAND (t
, 0));
2621 return op
&& (CONSTANT_CLASS_P (op
) || decl_address_ip_invariant_p (op
));
2624 /* Return true if T is a GIMPLE minimal invariant. It's a restricted
2625 form of function invariant. */
2628 is_gimple_min_invariant (const_tree t
)
2630 if (TREE_CODE (t
) == ADDR_EXPR
)
2631 return is_gimple_invariant_address (t
);
2633 return is_gimple_constant (t
);
2636 /* Return true if T is a GIMPLE interprocedural invariant. It's a restricted
2637 form of gimple minimal invariant. */
2640 is_gimple_ip_invariant (const_tree t
)
2642 if (TREE_CODE (t
) == ADDR_EXPR
)
2643 return is_gimple_ip_invariant_address (t
);
2645 return is_gimple_constant (t
);
2648 /* Return true if T looks like a valid GIMPLE statement. */
2651 is_gimple_stmt (tree t
)
2653 const enum tree_code code
= TREE_CODE (t
);
2658 /* The only valid NOP_EXPR is the empty statement. */
2659 return IS_EMPTY_STMT (t
);
2663 /* These are only valid if they're void. */
2664 return TREE_TYPE (t
) == NULL
|| VOID_TYPE_P (TREE_TYPE (t
));
2670 case CASE_LABEL_EXPR
:
2671 case TRY_CATCH_EXPR
:
2672 case TRY_FINALLY_EXPR
:
2673 case EH_FILTER_EXPR
:
2676 case STATEMENT_LIST
:
2686 /* These are always void. */
2692 /* These are valid regardless of their type. */
2700 /* Return true if T is a variable. */
2703 is_gimple_variable (tree t
)
2705 return (TREE_CODE (t
) == VAR_DECL
2706 || TREE_CODE (t
) == PARM_DECL
2707 || TREE_CODE (t
) == RESULT_DECL
2708 || TREE_CODE (t
) == SSA_NAME
);
2711 /* Return true if T is a GIMPLE identifier (something with an address). */
2714 is_gimple_id (tree t
)
2716 return (is_gimple_variable (t
)
2717 || TREE_CODE (t
) == FUNCTION_DECL
2718 || TREE_CODE (t
) == LABEL_DECL
2719 || TREE_CODE (t
) == CONST_DECL
2720 /* Allow string constants, since they are addressable. */
2721 || TREE_CODE (t
) == STRING_CST
);
2724 /* Return true if TYPE is a suitable type for a scalar register variable. */
2727 is_gimple_reg_type (tree type
)
2729 return !AGGREGATE_TYPE_P (type
);
2732 /* Return true if T is a non-aggregate register variable. */
2735 is_gimple_reg (tree t
)
2737 if (TREE_CODE (t
) == SSA_NAME
)
2738 t
= SSA_NAME_VAR (t
);
2740 if (!is_gimple_variable (t
))
2743 if (!is_gimple_reg_type (TREE_TYPE (t
)))
2746 /* A volatile decl is not acceptable because we can't reuse it as
2747 needed. We need to copy it into a temp first. */
2748 if (TREE_THIS_VOLATILE (t
))
2751 /* We define "registers" as things that can be renamed as needed,
2752 which with our infrastructure does not apply to memory. */
2753 if (needs_to_live_in_memory (t
))
2756 /* Hard register variables are an interesting case. For those that
2757 are call-clobbered, we don't know where all the calls are, since
2758 we don't (want to) take into account which operations will turn
2759 into libcalls at the rtl level. For those that are call-saved,
2760 we don't currently model the fact that calls may in fact change
2761 global hard registers, nor do we examine ASM_CLOBBERS at the tree
2762 level, and so miss variable changes that might imply. All around,
2763 it seems safest to not do too much optimization with these at the
2764 tree level at all. We'll have to rely on the rtl optimizers to
2765 clean this up, as there we've got all the appropriate bits exposed. */
2766 if (TREE_CODE (t
) == VAR_DECL
&& DECL_HARD_REGISTER (t
))
2769 /* Complex and vector values must have been put into SSA-like form.
2770 That is, no assignments to the individual components. */
2771 if (TREE_CODE (TREE_TYPE (t
)) == COMPLEX_TYPE
2772 || TREE_CODE (TREE_TYPE (t
)) == VECTOR_TYPE
)
2773 return DECL_GIMPLE_REG_P (t
);
2779 /* Return true if T is a GIMPLE variable whose address is not needed. */
2782 is_gimple_non_addressable (tree t
)
2784 if (TREE_CODE (t
) == SSA_NAME
)
2785 t
= SSA_NAME_VAR (t
);
2787 return (is_gimple_variable (t
) && ! needs_to_live_in_memory (t
));
2790 /* Return true if T is a GIMPLE rvalue, i.e. an identifier or a constant. */
2793 is_gimple_val (tree t
)
2795 /* Make loads from volatiles and memory vars explicit. */
2796 if (is_gimple_variable (t
)
2797 && is_gimple_reg_type (TREE_TYPE (t
))
2798 && !is_gimple_reg (t
))
2801 return (is_gimple_variable (t
) || is_gimple_min_invariant (t
));
2804 /* Similarly, but accept hard registers as inputs to asm statements. */
2807 is_gimple_asm_val (tree t
)
2809 if (TREE_CODE (t
) == VAR_DECL
&& DECL_HARD_REGISTER (t
))
2812 return is_gimple_val (t
);
2815 /* Return true if T is a GIMPLE minimal lvalue. */
2818 is_gimple_min_lval (tree t
)
2820 if (!(t
= CONST_CAST_TREE (strip_invariant_refs (t
))))
2822 return (is_gimple_id (t
) || TREE_CODE (t
) == INDIRECT_REF
);
2825 /* Return true if T is a typecast operation. */
2828 is_gimple_cast (tree t
)
2830 return (CONVERT_EXPR_P (t
)
2831 || TREE_CODE (t
) == FIX_TRUNC_EXPR
);
2834 /* Return true if T is a valid function operand of a CALL_EXPR. */
2837 is_gimple_call_addr (tree t
)
2839 return (TREE_CODE (t
) == OBJ_TYPE_REF
|| is_gimple_val (t
));
2842 /* If T makes a function call, return the corresponding CALL_EXPR operand.
2843 Otherwise, return NULL_TREE. */
2846 get_call_expr_in (tree t
)
2848 if (TREE_CODE (t
) == MODIFY_EXPR
)
2849 t
= TREE_OPERAND (t
, 1);
2850 if (TREE_CODE (t
) == WITH_SIZE_EXPR
)
2851 t
= TREE_OPERAND (t
, 0);
2852 if (TREE_CODE (t
) == CALL_EXPR
)
2858 /* Given a memory reference expression T, return its base address.
2859 The base address of a memory reference expression is the main
2860 object being referenced. For instance, the base address for
2861 'array[i].fld[j]' is 'array'. You can think of this as stripping
2862 away the offset part from a memory address.
2864 This function calls handled_component_p to strip away all the inner
2865 parts of the memory reference until it reaches the base object. */
2868 get_base_address (tree t
)
2870 while (handled_component_p (t
))
2871 t
= TREE_OPERAND (t
, 0);
2874 || TREE_CODE (t
) == STRING_CST
2875 || TREE_CODE (t
) == CONSTRUCTOR
2876 || INDIRECT_REF_P (t
))
2883 recalculate_side_effects (tree t
)
2885 enum tree_code code
= TREE_CODE (t
);
2886 int len
= TREE_OPERAND_LENGTH (t
);
2889 switch (TREE_CODE_CLASS (code
))
2891 case tcc_expression
:
2897 case PREDECREMENT_EXPR
:
2898 case PREINCREMENT_EXPR
:
2899 case POSTDECREMENT_EXPR
:
2900 case POSTINCREMENT_EXPR
:
2901 /* All of these have side-effects, no matter what their
2910 case tcc_comparison
: /* a comparison expression */
2911 case tcc_unary
: /* a unary arithmetic expression */
2912 case tcc_binary
: /* a binary arithmetic expression */
2913 case tcc_reference
: /* a reference */
2914 case tcc_vl_exp
: /* a function call */
2915 TREE_SIDE_EFFECTS (t
) = TREE_THIS_VOLATILE (t
);
2916 for (i
= 0; i
< len
; ++i
)
2918 tree op
= TREE_OPERAND (t
, i
);
2919 if (op
&& TREE_SIDE_EFFECTS (op
))
2920 TREE_SIDE_EFFECTS (t
) = 1;
2925 /* No side-effects. */
2933 /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns
2934 a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if
2935 we failed to create one. */
2938 canonicalize_cond_expr_cond (tree t
)
2940 /* For (bool)x use x != 0. */
2941 if (TREE_CODE (t
) == NOP_EXPR
2942 && TREE_TYPE (t
) == boolean_type_node
)
2944 tree top0
= TREE_OPERAND (t
, 0);
2945 t
= build2 (NE_EXPR
, TREE_TYPE (t
),
2946 top0
, build_int_cst (TREE_TYPE (top0
), 0));
2948 /* For !x use x == 0. */
2949 else if (TREE_CODE (t
) == TRUTH_NOT_EXPR
)
2951 tree top0
= TREE_OPERAND (t
, 0);
2952 t
= build2 (EQ_EXPR
, TREE_TYPE (t
),
2953 top0
, build_int_cst (TREE_TYPE (top0
), 0));
2955 /* For cmp ? 1 : 0 use cmp. */
2956 else if (TREE_CODE (t
) == COND_EXPR
2957 && COMPARISON_CLASS_P (TREE_OPERAND (t
, 0))
2958 && integer_onep (TREE_OPERAND (t
, 1))
2959 && integer_zerop (TREE_OPERAND (t
, 2)))
2961 tree top0
= TREE_OPERAND (t
, 0);
2962 t
= build2 (TREE_CODE (top0
), TREE_TYPE (t
),
2963 TREE_OPERAND (top0
, 0), TREE_OPERAND (top0
, 1));
2966 if (is_gimple_condexpr (t
))
2972 /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in
2973 the positions marked by the set ARGS_TO_SKIP. */
2976 gimple_call_copy_skip_args (gimple stmt
, bitmap args_to_skip
)
2979 tree fn
= gimple_call_fn (stmt
);
2980 int nargs
= gimple_call_num_args (stmt
);
2981 VEC(tree
, heap
) *vargs
= VEC_alloc (tree
, heap
, nargs
);
2984 for (i
= 0; i
< nargs
; i
++)
2985 if (!bitmap_bit_p (args_to_skip
, i
))
2986 VEC_quick_push (tree
, vargs
, gimple_call_arg (stmt
, i
));
2988 new_stmt
= gimple_build_call_vec (fn
, vargs
);
2989 VEC_free (tree
, heap
, vargs
);
2990 if (gimple_call_lhs (stmt
))
2991 gimple_call_set_lhs (new_stmt
, gimple_call_lhs (stmt
));
2993 gimple_set_vuse (new_stmt
, gimple_vuse (stmt
));
2994 gimple_set_vdef (new_stmt
, gimple_vdef (stmt
));
2996 gimple_set_block (new_stmt
, gimple_block (stmt
));
2997 if (gimple_has_location (stmt
))
2998 gimple_set_location (new_stmt
, gimple_location (stmt
));
3000 /* Carry all the flags to the new GIMPLE_CALL. */
3001 gimple_call_set_chain (new_stmt
, gimple_call_chain (stmt
));
3002 gimple_call_set_tail (new_stmt
, gimple_call_tail_p (stmt
));
3003 gimple_call_set_cannot_inline (new_stmt
, gimple_call_cannot_inline_p (stmt
));
3004 gimple_call_set_return_slot_opt (new_stmt
, gimple_call_return_slot_opt_p (stmt
));
3005 gimple_call_set_from_thunk (new_stmt
, gimple_call_from_thunk_p (stmt
));
3006 gimple_call_set_va_arg_pack (new_stmt
, gimple_call_va_arg_pack_p (stmt
));
3008 gimple_set_modified (new_stmt
, true);
3014 static hashval_t
gimple_type_hash (const void *);
3016 /* Structure used to maintain a cache of some type pairs compared by
3017 gimple_types_compatible_p when comparing aggregate types. There are
3018 four possible values for SAME_P:
3020 -2: The pair (T1, T2) has just been inserted in the table.
3021 -1: The pair (T1, T2) is currently being compared.
3022 0: T1 and T2 are different types.
3023 1: T1 and T2 are the same type.
3025 This table is only used when comparing aggregate types to avoid
3026 infinite recursion due to self-referential types. */
3033 typedef struct type_pair_d
*type_pair_t
;
3035 /* Return a hash value for the type pair pointed-to by P. */
3038 type_pair_hash (const void *p
)
3040 const struct type_pair_d
*pair
= (const struct type_pair_d
*) p
;
3041 hashval_t val1
= pair
->uid1
;
3042 hashval_t val2
= pair
->uid2
;
3043 return (iterative_hash_hashval_t (val2
, val1
)
3044 ^ iterative_hash_hashval_t (val1
, val2
));
3047 /* Compare two type pairs pointed-to by P1 and P2. */
3050 type_pair_eq (const void *p1
, const void *p2
)
3052 const struct type_pair_d
*pair1
= (const struct type_pair_d
*) p1
;
3053 const struct type_pair_d
*pair2
= (const struct type_pair_d
*) p2
;
3054 return ((pair1
->uid1
== pair2
->uid1
&& pair1
->uid2
== pair2
->uid2
)
3055 || (pair1
->uid1
== pair2
->uid2
&& pair1
->uid2
== pair2
->uid1
));
3058 /* Lookup the pair of types T1 and T2 in *VISITED_P. Insert a new
3059 entry if none existed. */
3062 lookup_type_pair (tree t1
, tree t2
, htab_t
*visited_p
, struct obstack
*ob_p
)
3064 struct type_pair_d pair
;
3068 if (*visited_p
== NULL
)
3070 *visited_p
= htab_create (251, type_pair_hash
, type_pair_eq
, NULL
);
3071 gcc_obstack_init (ob_p
);
3074 pair
.uid1
= TYPE_UID (t1
);
3075 pair
.uid2
= TYPE_UID (t2
);
3076 slot
= htab_find_slot (*visited_p
, &pair
, INSERT
);
3079 p
= *((type_pair_t
*) slot
);
3082 p
= XOBNEW (ob_p
, struct type_pair_d
);
3083 p
->uid1
= TYPE_UID (t1
);
3084 p
->uid2
= TYPE_UID (t2
);
3093 /* Return true if T1 and T2 have the same name. If FOR_COMPLETION_P is
3094 true then if any type has no name return false, otherwise return
3095 true if both types have no names. */
3098 compare_type_names_p (tree t1
, tree t2
, bool for_completion_p
)
3100 tree name1
= TYPE_NAME (t1
);
3101 tree name2
= TYPE_NAME (t2
);
3103 /* Consider anonymous types all unique for completion. */
3104 if (for_completion_p
3105 && (!name1
|| !name2
))
3108 if (name1
&& TREE_CODE (name1
) == TYPE_DECL
)
3110 name1
= DECL_NAME (name1
);
3111 if (for_completion_p
3115 gcc_assert (!name1
|| TREE_CODE (name1
) == IDENTIFIER_NODE
);
3117 if (name2
&& TREE_CODE (name2
) == TYPE_DECL
)
3119 name2
= DECL_NAME (name2
);
3120 if (for_completion_p
3124 gcc_assert (!name2
|| TREE_CODE (name2
) == IDENTIFIER_NODE
);
3126 /* Identifiers can be compared with pointer equality rather
3127 than a string comparison. */
3134 /* Return true if the field decls F1 and F2 are at the same offset. */
3137 compare_field_offset (tree f1
, tree f2
)
3139 if (DECL_OFFSET_ALIGN (f1
) == DECL_OFFSET_ALIGN (f2
))
3140 return (operand_equal_p (DECL_FIELD_OFFSET (f1
),
3141 DECL_FIELD_OFFSET (f2
), 0)
3142 && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1
),
3143 DECL_FIELD_BIT_OFFSET (f2
)));
3145 /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN
3146 should be, so handle differing ones specially by decomposing
3147 the offset into a byte and bit offset manually. */
3148 if (host_integerp (DECL_FIELD_OFFSET (f1
), 0)
3149 && host_integerp (DECL_FIELD_OFFSET (f2
), 0))
3151 unsigned HOST_WIDE_INT byte_offset1
, byte_offset2
;
3152 unsigned HOST_WIDE_INT bit_offset1
, bit_offset2
;
3153 bit_offset1
= TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1
));
3154 byte_offset1
= (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1
))
3155 + bit_offset1
/ BITS_PER_UNIT
);
3156 bit_offset2
= TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2
));
3157 byte_offset2
= (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2
))
3158 + bit_offset2
/ BITS_PER_UNIT
);
3159 if (byte_offset1
!= byte_offset2
)
3161 return bit_offset1
% BITS_PER_UNIT
== bit_offset2
% BITS_PER_UNIT
;
3167 /* Return 1 iff T1 and T2 are structurally identical.
3168 Otherwise, return 0. */
3171 gimple_types_compatible_p (tree t1
, tree t2
)
3173 type_pair_t p
= NULL
;
3175 /* Check first for the obvious case of pointer identity. */
3179 /* Check that we have two types to compare. */
3180 if (t1
== NULL_TREE
|| t2
== NULL_TREE
)
3181 goto different_types
;
3183 /* Can't be the same type if the types don't have the same code. */
3184 if (TREE_CODE (t1
) != TREE_CODE (t2
))
3185 goto different_types
;
3187 /* Void types are always the same. */
3188 if (TREE_CODE (t1
) == VOID_TYPE
)
3191 /* Can't be the same type if they have different CV qualifiers. */
3192 if (TYPE_QUALS (t1
) != TYPE_QUALS (t2
))
3193 goto different_types
;
3195 /* If the hash values of t1 and t2 are different the types can't
3196 possibly be the same. This helps keeping the type-pair hashtable
3197 small, only tracking comparisons for hash collisions. */
3198 if (gimple_type_hash (t1
) != gimple_type_hash (t2
))
3201 /* If we've visited this type pair before (in the case of aggregates
3202 with self-referential types), and we made a decision, return it. */
3203 p
= lookup_type_pair (t1
, t2
, >c_visited
, >c_ob
);
3204 if (p
->same_p
== 0 || p
->same_p
== 1)
3206 /* We have already decided whether T1 and T2 are the
3207 same, return the cached result. */
3208 return p
->same_p
== 1;
3210 else if (p
->same_p
== -1)
3212 /* We are currently comparing this pair of types, assume
3213 that they are the same and let the caller decide. */
3217 gcc_assert (p
->same_p
== -2);
3219 /* Mark the (T1, T2) comparison in progress. */
3222 /* If their attributes are not the same they can't be the same type. */
3223 if (!attribute_list_equal (TYPE_ATTRIBUTES (t1
), TYPE_ATTRIBUTES (t2
)))
3224 goto different_types
;
3226 /* For numerical types, the bounds must coincide. */
3227 if (INTEGRAL_TYPE_P (t1
)
3228 || SCALAR_FLOAT_TYPE_P (t1
)
3229 || FIXED_POINT_TYPE_P (t1
))
3231 /* Can't be the same type if they have different size, alignment,
3232 sign, precision or mode. Note that from now on, comparisons
3233 between *_CST nodes must be done using tree_int_cst_equal because
3234 we cannot assume that constants from T1 and T2 will be shared
3235 since T1 and T2 are distinct pointers. */
3236 if (!tree_int_cst_equal (TYPE_SIZE (t1
), TYPE_SIZE (t2
))
3237 || !tree_int_cst_equal (TYPE_SIZE_UNIT (t1
), TYPE_SIZE_UNIT (t2
))
3238 || TYPE_ALIGN (t1
) != TYPE_ALIGN (t2
)
3239 || TYPE_PRECISION (t1
) != TYPE_PRECISION (t2
)
3240 || TYPE_MODE (t1
) != TYPE_MODE (t2
)
3241 || TYPE_UNSIGNED (t1
) != TYPE_UNSIGNED (t2
))
3242 goto different_types
;
3244 /* For non-enumeral types, check type bounds. FIXME lto, we
3245 cannot check bounds on enumeral types because different front
3246 ends will produce different values. In C, enumeral types are
3247 integers, while in C++ each element will have its own
3248 symbolic value. We should decide how enums are to be
3249 represented in GIMPLE and have each front end lower to that. */
3250 if (TREE_CODE (t1
) != ENUMERAL_TYPE
)
3252 tree min1
= TYPE_MIN_VALUE (t1
);
3253 tree max1
= TYPE_MAX_VALUE (t1
);
3254 tree min2
= TYPE_MIN_VALUE (t2
);
3255 tree max2
= TYPE_MAX_VALUE (t2
);
3256 bool min_equal_p
= false;
3257 bool max_equal_p
= false;
3259 /* If either type has a minimum value, the other type must
3261 if (min1
== NULL_TREE
&& min2
== NULL_TREE
)
3263 else if (min1
&& min2
&& operand_equal_p (min1
, min2
, 0))
3266 /* Likewise, if either type has a maximum value, the other
3267 type must have the same. */
3268 if (max1
== NULL_TREE
&& max2
== NULL_TREE
)
3270 else if (max1
&& max2
&& operand_equal_p (max1
, max2
, 0))
3273 if (!min_equal_p
|| !max_equal_p
)
3274 goto different_types
;
3277 if (TREE_CODE (t1
) == INTEGER_TYPE
)
3279 if (TYPE_IS_SIZETYPE (t1
) == TYPE_IS_SIZETYPE (t2
)
3280 && TYPE_STRING_FLAG (t1
) == TYPE_STRING_FLAG (t2
))
3283 goto different_types
;
3285 else if (TREE_CODE (t1
) == BOOLEAN_TYPE
)
3287 else if (TREE_CODE (t1
) == REAL_TYPE
)
3291 /* Do type-specific comparisons. */
3292 switch (TREE_CODE (t1
))
3295 /* Array types are the same if the element types are the same and
3296 the number of elements are the same. */
3297 if (!gimple_types_compatible_p (TREE_TYPE (t1
), TREE_TYPE (t2
))
3298 || TYPE_STRING_FLAG (t1
) != TYPE_STRING_FLAG (t2
))
3299 goto different_types
;
3302 tree i1
= TYPE_DOMAIN (t1
);
3303 tree i2
= TYPE_DOMAIN (t2
);
3305 /* For an incomplete external array, the type domain can be
3306 NULL_TREE. Check this condition also. */
3307 if (i1
== NULL_TREE
&& i2
== NULL_TREE
)
3309 else if (i1
== NULL_TREE
|| i2
== NULL_TREE
)
3310 goto different_types
;
3311 /* If for a complete array type the possibly gimplified sizes
3312 are different the types are different. */
3313 else if (((TYPE_SIZE (i1
) != NULL
) ^ (TYPE_SIZE (i2
) != NULL
))
3316 && !operand_equal_p (TYPE_SIZE (i1
), TYPE_SIZE (i2
), 0)))
3317 goto different_types
;
3320 tree min1
= TYPE_MIN_VALUE (i1
);
3321 tree min2
= TYPE_MIN_VALUE (i2
);
3322 tree max1
= TYPE_MAX_VALUE (i1
);
3323 tree max2
= TYPE_MAX_VALUE (i2
);
3325 /* The minimum/maximum values have to be the same. */
3327 || (min1
&& min2
&& operand_equal_p (min1
, min2
, 0)))
3329 || (max1
&& max2
&& operand_equal_p (max1
, max2
, 0))))
3332 goto different_types
;
3337 /* Method types should belong to the same class. */
3338 if (!gimple_types_compatible_p (TYPE_METHOD_BASETYPE (t1
),
3339 TYPE_METHOD_BASETYPE (t2
)))
3340 goto different_types
;
3345 /* Function types are the same if the return type and arguments types
3347 if (!gimple_types_compatible_p (TREE_TYPE (t1
), TREE_TYPE (t2
)))
3348 goto different_types
;
3351 if (!targetm
.comp_type_attributes (t1
, t2
))
3352 goto different_types
;
3354 if (TYPE_ARG_TYPES (t1
) == TYPE_ARG_TYPES (t2
))
3358 tree parms1
, parms2
;
3360 for (parms1
= TYPE_ARG_TYPES (t1
), parms2
= TYPE_ARG_TYPES (t2
);
3362 parms1
= TREE_CHAIN (parms1
), parms2
= TREE_CHAIN (parms2
))
3364 if (!gimple_types_compatible_p (TREE_VALUE (parms1
),
3365 TREE_VALUE (parms2
)))
3366 goto different_types
;
3369 if (parms1
|| parms2
)
3370 goto different_types
;
3377 case REFERENCE_TYPE
:
3379 /* If the two pointers have different ref-all attributes,
3380 they can't be the same type. */
3381 if (TYPE_REF_CAN_ALIAS_ALL (t1
) != TYPE_REF_CAN_ALIAS_ALL (t2
))
3382 goto different_types
;
3384 /* If one pointer points to an incomplete type variant of
3385 the other pointed-to type they are the same. */
3386 if (TREE_CODE (TREE_TYPE (t1
)) == TREE_CODE (TREE_TYPE (t2
))
3387 && RECORD_OR_UNION_TYPE_P (TREE_TYPE (t1
))
3388 && (!COMPLETE_TYPE_P (TREE_TYPE (t1
))
3389 || !COMPLETE_TYPE_P (TREE_TYPE (t2
)))
3390 && compare_type_names_p (TREE_TYPE (t1
), TREE_TYPE (t2
), true))
3392 /* Replace the pointed-to incomplete type with the
3394 if (COMPLETE_TYPE_P (TREE_TYPE (t2
)))
3395 TREE_TYPE (t1
) = TREE_TYPE (t2
);
3397 TREE_TYPE (t2
) = TREE_TYPE (t1
);
3401 /* Otherwise, pointer and reference types are the same if the
3402 pointed-to types are the same. */
3403 if (gimple_types_compatible_p (TREE_TYPE (t1
), TREE_TYPE (t2
)))
3406 goto different_types
;
3411 /* For enumeral types, all the values must be the same. */
3414 if (TYPE_VALUES (t1
) == TYPE_VALUES (t2
))
3417 for (v1
= TYPE_VALUES (t1
), v2
= TYPE_VALUES (t2
);
3419 v1
= TREE_CHAIN (v1
), v2
= TREE_CHAIN (v2
))
3421 tree c1
= TREE_VALUE (v1
);
3422 tree c2
= TREE_VALUE (v2
);
3424 if (TREE_CODE (c1
) == CONST_DECL
)
3425 c1
= DECL_INITIAL (c1
);
3427 if (TREE_CODE (c2
) == CONST_DECL
)
3428 c2
= DECL_INITIAL (c2
);
3430 if (tree_int_cst_equal (c1
, c2
) != 1)
3431 goto different_types
;
3434 /* If one enumeration has more values than the other, they
3435 are not the same. */
3437 goto different_types
;
3444 case QUAL_UNION_TYPE
:
3448 /* If one type requires structural equality checks and the
3449 other doesn't, do not merge the types. */
3450 if (TYPE_STRUCTURAL_EQUALITY_P (t1
)
3451 != TYPE_STRUCTURAL_EQUALITY_P (t2
))
3452 goto different_types
;
3454 /* The struct tags shall compare equal. */
3455 if (!compare_type_names_p (TYPE_MAIN_VARIANT (t1
),
3456 TYPE_MAIN_VARIANT (t2
), false))
3457 goto different_types
;
3459 /* For aggregate types, all the fields must be the same. */
3460 for (f1
= TYPE_FIELDS (t1
), f2
= TYPE_FIELDS (t2
);
3462 f1
= TREE_CHAIN (f1
), f2
= TREE_CHAIN (f2
))
3464 /* The fields must have the same name, offset and type. */
3465 if (DECL_NAME (f1
) != DECL_NAME (f2
)
3466 || !compare_field_offset (f1
, f2
)
3467 || !gimple_types_compatible_p (TREE_TYPE (f1
),
3469 goto different_types
;
3472 /* If one aggregate has more fields than the other, they
3473 are not the same. */
3475 goto different_types
;
3481 if (TYPE_VECTOR_SUBPARTS (t1
) != TYPE_VECTOR_SUBPARTS (t2
))
3482 goto different_types
;
3486 if (!gimple_types_compatible_p (TREE_TYPE (t1
), TREE_TYPE (t2
)))
3487 goto different_types
;
3491 goto different_types
;
3494 /* Common exit path for types that are not compatible. */
3500 /* Common exit path for types that are compatible. */
3510 /* Per pointer state for the SCC finding. The on_sccstack flag
3511 is not strictly required, it is true when there is no hash value
3512 recorded for the type and false otherwise. But querying that
3517 unsigned int dfsnum
;
3523 static unsigned int next_dfs_num
;
3526 iterative_hash_gimple_type (tree
, hashval_t
, VEC(tree
, heap
) **,
3527 struct pointer_map_t
*, struct obstack
*);
3529 /* DFS visit the edge from the callers type with state *STATE to T.
3530 Update the callers type hash V with the hash for T if it is not part
3531 of the SCC containing the callers type and return it.
3532 SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */
3535 visit (tree t
, struct sccs
*state
, hashval_t v
,
3536 VEC (tree
, heap
) **sccstack
,
3537 struct pointer_map_t
*sccstate
,
3538 struct obstack
*sccstate_obstack
)
3540 struct sccs
*cstate
= NULL
;
3543 /* If there is a hash value recorded for this type then it can't
3544 possibly be part of our parent SCC. Simply mix in its hash. */
3545 if ((slot
= pointer_map_contains (type_hash_cache
, t
)))
3546 return iterative_hash_hashval_t ((hashval_t
) (size_t) *slot
, v
);
3548 if ((slot
= pointer_map_contains (sccstate
, t
)) != NULL
)
3549 cstate
= (struct sccs
*)*slot
;
3553 /* Not yet visited. DFS recurse. */
3554 tem
= iterative_hash_gimple_type (t
, v
,
3555 sccstack
, sccstate
, sccstate_obstack
);
3557 cstate
= (struct sccs
*)* pointer_map_contains (sccstate
, t
);
3558 state
->low
= MIN (state
->low
, cstate
->low
);
3559 /* If the type is no longer on the SCC stack and thus is not part
3560 of the parents SCC mix in its hash value. Otherwise we will
3561 ignore the type for hashing purposes and return the unaltered
3563 if (!cstate
->on_sccstack
)
3566 if (cstate
->dfsnum
< state
->dfsnum
3567 && cstate
->on_sccstack
)
3568 state
->low
= MIN (cstate
->dfsnum
, state
->low
);
3570 /* We are part of our parents SCC, skip this type during hashing
3571 and return the unaltered hash value. */
3575 /* Hash NAME with the previous hash value V and return it. */
3578 iterative_hash_name (tree name
, hashval_t v
)
3582 if (TREE_CODE (name
) == TYPE_DECL
)
3583 name
= DECL_NAME (name
);
3586 gcc_assert (TREE_CODE (name
) == IDENTIFIER_NODE
);
3587 return iterative_hash_object (IDENTIFIER_HASH_VALUE (name
), v
);
3590 /* Returning a hash value for gimple type TYPE combined with VAL.
3591 SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done.
3593 To hash a type we end up hashing in types that are reachable.
3594 Through pointers we can end up with cycles which messes up the
3595 required property that we need to compute the same hash value
3596 for structurally equivalent types. To avoid this we have to
3597 hash all types in a cycle (the SCC) in a commutative way. The
3598 easiest way is to not mix in the hashes of the SCC members at
3599 all. To make this work we have to delay setting the hash
3600 values of the SCC until it is complete. */
3603 iterative_hash_gimple_type (tree type
, hashval_t val
,
3604 VEC(tree
, heap
) **sccstack
,
3605 struct pointer_map_t
*sccstate
,
3606 struct obstack
*sccstate_obstack
)
3612 #ifdef ENABLE_CHECKING
3613 /* Not visited during this DFS walk nor during previous walks. */
3614 gcc_assert (!pointer_map_contains (type_hash_cache
, type
)
3615 && !pointer_map_contains (sccstate
, type
));
3617 state
= XOBNEW (sccstate_obstack
, struct sccs
);
3618 *pointer_map_insert (sccstate
, type
) = state
;
3620 VEC_safe_push (tree
, heap
, *sccstack
, type
);
3621 state
->dfsnum
= next_dfs_num
++;
3622 state
->low
= state
->dfsnum
;
3623 state
->on_sccstack
= true;
3625 /* Combine a few common features of types so that types are grouped into
3626 smaller sets; when searching for existing matching types to merge,
3627 only existing types having the same features as the new type will be
3629 v
= iterative_hash_hashval_t (TREE_CODE (type
), 0);
3630 v
= iterative_hash_hashval_t (TYPE_QUALS (type
), v
);
3631 v
= iterative_hash_hashval_t (TREE_ADDRESSABLE (type
), v
);
3633 /* Do not hash the types size as this will cause differences in
3634 hash values for the complete vs. the incomplete type variant. */
3636 /* Incorporate common features of numerical types. */
3637 if (INTEGRAL_TYPE_P (type
)
3638 || SCALAR_FLOAT_TYPE_P (type
)
3639 || FIXED_POINT_TYPE_P (type
))
3641 v
= iterative_hash_hashval_t (TYPE_PRECISION (type
), v
);
3642 v
= iterative_hash_hashval_t (TYPE_MODE (type
), v
);
3643 v
= iterative_hash_hashval_t (TYPE_UNSIGNED (type
), v
);
3646 /* For pointer and reference types, fold in information about the type
3647 pointed to but do not recurse into possibly incomplete types to
3648 avoid hash differences for complete vs. incomplete types. */
3649 if (POINTER_TYPE_P (type
))
3651 if (RECORD_OR_UNION_TYPE_P (TREE_TYPE (type
)))
3653 v
= iterative_hash_hashval_t (TREE_CODE (TREE_TYPE (type
)), v
);
3654 v
= iterative_hash_name
3655 (TYPE_NAME (TYPE_MAIN_VARIANT (TREE_TYPE (type
))), v
);
3658 v
= visit (TREE_TYPE (type
), state
, v
,
3659 sccstack
, sccstate
, sccstate_obstack
);
3662 /* For integer types hash the types min/max values and the string flag. */
3663 if (TREE_CODE (type
) == INTEGER_TYPE
)
3665 v
= iterative_hash_expr (TYPE_MIN_VALUE (type
), v
);
3666 v
= iterative_hash_expr (TYPE_MAX_VALUE (type
), v
);
3667 v
= iterative_hash_hashval_t (TYPE_STRING_FLAG (type
), v
);
3670 /* For array types hash their domain and the string flag. */
3671 if (TREE_CODE (type
) == ARRAY_TYPE
3672 && TYPE_DOMAIN (type
))
3674 v
= iterative_hash_hashval_t (TYPE_STRING_FLAG (type
), v
);
3675 v
= visit (TYPE_DOMAIN (type
), state
, v
,
3676 sccstack
, sccstate
, sccstate_obstack
);
3679 /* Recurse for aggregates with a single element type. */
3680 if (TREE_CODE (type
) == ARRAY_TYPE
3681 || TREE_CODE (type
) == COMPLEX_TYPE
3682 || TREE_CODE (type
) == VECTOR_TYPE
)
3683 v
= visit (TREE_TYPE (type
), state
, v
,
3684 sccstack
, sccstate
, sccstate_obstack
);
3686 /* Incorporate function return and argument types. */
3687 if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
3692 /* For method types also incorporate their parent class. */
3693 if (TREE_CODE (type
) == METHOD_TYPE
)
3694 v
= visit (TYPE_METHOD_BASETYPE (type
), state
, v
,
3695 sccstack
, sccstate
, sccstate_obstack
);
3697 v
= visit (TREE_TYPE (type
), state
, v
,
3698 sccstack
, sccstate
, sccstate_obstack
);
3700 for (p
= TYPE_ARG_TYPES (type
), na
= 0; p
; p
= TREE_CHAIN (p
))
3702 v
= visit (TREE_VALUE (p
), state
, v
,
3703 sccstack
, sccstate
, sccstate_obstack
);
3707 v
= iterative_hash_hashval_t (na
, v
);
3710 if (TREE_CODE (type
) == RECORD_TYPE
3711 || TREE_CODE (type
) == UNION_TYPE
3712 || TREE_CODE (type
) == QUAL_UNION_TYPE
)
3717 v
= iterative_hash_name (TYPE_NAME (TYPE_MAIN_VARIANT (type
)), v
);
3719 for (f
= TYPE_FIELDS (type
), nf
= 0; f
; f
= TREE_CHAIN (f
))
3721 v
= iterative_hash_name (DECL_NAME (f
), v
);
3722 v
= visit (TREE_TYPE (f
), state
, v
,
3723 sccstack
, sccstate
, sccstate_obstack
);
3727 v
= iterative_hash_hashval_t (nf
, v
);
3730 /* Record hash for us. */
3733 /* See if we found an SCC. */
3734 if (state
->low
== state
->dfsnum
)
3738 /* Pop off the SCC and set its hash values. */
3741 struct sccs
*cstate
;
3742 x
= VEC_pop (tree
, *sccstack
);
3743 gcc_assert (!pointer_map_contains (type_hash_cache
, x
));
3744 cstate
= (struct sccs
*)*pointer_map_contains (sccstate
, x
);
3745 cstate
->on_sccstack
= false;
3746 slot
= pointer_map_insert (type_hash_cache
, x
);
3747 *slot
= (void *) (size_t) cstate
->hash
;
3752 return iterative_hash_hashval_t (v
, val
);
3756 /* Returns a hash value for P (assumed to be a type). The hash value
3757 is computed using some distinguishing features of the type. Note
3758 that we cannot use pointer hashing here as we may be dealing with
3759 two distinct instances of the same type.
3761 This function should produce the same hash value for two compatible
3762 types according to gimple_types_compatible_p. */
3765 gimple_type_hash (const void *p
)
3767 const_tree t
= (const_tree
) p
;
3768 VEC(tree
, heap
) *sccstack
= NULL
;
3769 struct pointer_map_t
*sccstate
;
3770 struct obstack sccstate_obstack
;
3774 if (type_hash_cache
== NULL
)
3775 type_hash_cache
= pointer_map_create ();
3777 if ((slot
= pointer_map_contains (type_hash_cache
, p
)) != NULL
)
3778 return iterative_hash_hashval_t ((hashval_t
) (size_t) *slot
, 0);
3780 /* Perform a DFS walk and pre-hash all reachable types. */
3782 sccstate
= pointer_map_create ();
3783 gcc_obstack_init (&sccstate_obstack
);
3784 val
= iterative_hash_gimple_type (CONST_CAST_TREE (t
), 0,
3785 &sccstack
, sccstate
, &sccstate_obstack
);
3786 VEC_free (tree
, heap
, sccstack
);
3787 pointer_map_destroy (sccstate
);
3788 obstack_free (&sccstate_obstack
, NULL
);
3794 /* Returns nonzero if P1 and P2 are equal. */
3797 gimple_type_eq (const void *p1
, const void *p2
)
3799 const_tree t1
= (const_tree
) p1
;
3800 const_tree t2
= (const_tree
) p2
;
3801 return gimple_types_compatible_p (CONST_CAST_TREE (t1
), CONST_CAST_TREE (t2
));
3805 /* Register type T in the global type table gimple_types.
3806 If another type T', compatible with T, already existed in
3807 gimple_types then return T', otherwise return T. This is used by
3808 LTO to merge identical types read from different TUs. */
3811 gimple_register_type (tree t
)
3815 gcc_assert (TYPE_P (t
));
3817 if (gimple_types
== NULL
)
3818 gimple_types
= htab_create (16381, gimple_type_hash
, gimple_type_eq
, 0);
3820 slot
= htab_find_slot (gimple_types
, t
, INSERT
);
3822 && *(tree
*)slot
!= t
)
3824 tree new_type
= (tree
) *((tree
*) slot
);
3826 /* Do not merge types with different addressability. */
3827 gcc_assert (TREE_ADDRESSABLE (t
) == TREE_ADDRESSABLE (new_type
));
3829 /* If t is not its main variant then make t unreachable from its
3830 main variant list. Otherwise we'd queue up a lot of duplicates
3832 if (t
!= TYPE_MAIN_VARIANT (t
))
3834 tree tem
= TYPE_MAIN_VARIANT (t
);
3835 while (tem
&& TYPE_NEXT_VARIANT (tem
) != t
)
3836 tem
= TYPE_NEXT_VARIANT (tem
);
3838 TYPE_NEXT_VARIANT (tem
) = TYPE_NEXT_VARIANT (t
);
3839 TYPE_NEXT_VARIANT (t
) = NULL_TREE
;
3842 /* If we are a pointer then remove us from the pointer-to or
3843 reference-to chain. Otherwise we'd queue up a lot of duplicates
3845 if (TREE_CODE (t
) == POINTER_TYPE
)
3847 if (TYPE_POINTER_TO (TREE_TYPE (t
)) == t
)
3848 TYPE_POINTER_TO (TREE_TYPE (t
)) = TYPE_NEXT_PTR_TO (t
);
3851 tree tem
= TYPE_POINTER_TO (TREE_TYPE (t
));
3852 while (tem
&& TYPE_NEXT_PTR_TO (tem
) != t
)
3853 tem
= TYPE_NEXT_PTR_TO (tem
);
3855 TYPE_NEXT_PTR_TO (tem
) = TYPE_NEXT_PTR_TO (t
);
3857 TYPE_NEXT_PTR_TO (t
) = NULL_TREE
;
3859 else if (TREE_CODE (t
) == REFERENCE_TYPE
)
3861 if (TYPE_REFERENCE_TO (TREE_TYPE (t
)) == t
)
3862 TYPE_REFERENCE_TO (TREE_TYPE (t
)) = TYPE_NEXT_REF_TO (t
);
3865 tree tem
= TYPE_REFERENCE_TO (TREE_TYPE (t
));
3866 while (tem
&& TYPE_NEXT_REF_TO (tem
) != t
)
3867 tem
= TYPE_NEXT_REF_TO (tem
);
3869 TYPE_NEXT_REF_TO (tem
) = TYPE_NEXT_REF_TO (t
);
3871 TYPE_NEXT_REF_TO (t
) = NULL_TREE
;
3883 /* Show statistics on references to the global type table gimple_types. */
3886 print_gimple_types_stats (void)
3889 fprintf (stderr
, "GIMPLE type table: size %ld, %ld elements, "
3890 "%ld searches, %ld collisions (ratio: %f)\n",
3891 (long) htab_size (gimple_types
),
3892 (long) htab_elements (gimple_types
),
3893 (long) gimple_types
->searches
,
3894 (long) gimple_types
->collisions
,
3895 htab_collisions (gimple_types
));
3897 fprintf (stderr
, "GIMPLE type table is empty\n");
3899 fprintf (stderr
, "GIMPLE type comparison table: size %ld, %ld "
3900 "elements, %ld searches, %ld collisions (ratio: %f)\n",
3901 (long) htab_size (gtc_visited
),
3902 (long) htab_elements (gtc_visited
),
3903 (long) gtc_visited
->searches
,
3904 (long) gtc_visited
->collisions
,
3905 htab_collisions (gtc_visited
));
3907 fprintf (stderr
, "GIMPLE type comparison table is empty\n");
3910 /* Free the gimple type hashtables used for LTO type merging. */
3913 free_gimple_type_tables (void)
3915 /* Last chance to print stats for the tables. */
3916 if (flag_lto_report
)
3917 print_gimple_types_stats ();
3921 htab_delete (gimple_types
);
3922 gimple_types
= NULL
;
3924 if (type_hash_cache
)
3926 pointer_map_destroy (type_hash_cache
);
3927 type_hash_cache
= NULL
;
3931 htab_delete (gtc_visited
);
3932 obstack_free (>c_ob
, NULL
);
3938 /* Return a type the same as TYPE except unsigned or
3939 signed according to UNSIGNEDP. */
3942 gimple_signed_or_unsigned_type (bool unsignedp
, tree type
)
3946 type1
= TYPE_MAIN_VARIANT (type
);
3947 if (type1
== signed_char_type_node
3948 || type1
== char_type_node
3949 || type1
== unsigned_char_type_node
)
3950 return unsignedp
? unsigned_char_type_node
: signed_char_type_node
;
3951 if (type1
== integer_type_node
|| type1
== unsigned_type_node
)
3952 return unsignedp
? unsigned_type_node
: integer_type_node
;
3953 if (type1
== short_integer_type_node
|| type1
== short_unsigned_type_node
)
3954 return unsignedp
? short_unsigned_type_node
: short_integer_type_node
;
3955 if (type1
== long_integer_type_node
|| type1
== long_unsigned_type_node
)
3956 return unsignedp
? long_unsigned_type_node
: long_integer_type_node
;
3957 if (type1
== long_long_integer_type_node
3958 || type1
== long_long_unsigned_type_node
)
3960 ? long_long_unsigned_type_node
3961 : long_long_integer_type_node
;
3962 #if HOST_BITS_PER_WIDE_INT >= 64
3963 if (type1
== intTI_type_node
|| type1
== unsigned_intTI_type_node
)
3964 return unsignedp
? unsigned_intTI_type_node
: intTI_type_node
;
3966 if (type1
== intDI_type_node
|| type1
== unsigned_intDI_type_node
)
3967 return unsignedp
? unsigned_intDI_type_node
: intDI_type_node
;
3968 if (type1
== intSI_type_node
|| type1
== unsigned_intSI_type_node
)
3969 return unsignedp
? unsigned_intSI_type_node
: intSI_type_node
;
3970 if (type1
== intHI_type_node
|| type1
== unsigned_intHI_type_node
)
3971 return unsignedp
? unsigned_intHI_type_node
: intHI_type_node
;
3972 if (type1
== intQI_type_node
|| type1
== unsigned_intQI_type_node
)
3973 return unsignedp
? unsigned_intQI_type_node
: intQI_type_node
;
3975 #define GIMPLE_FIXED_TYPES(NAME) \
3976 if (type1 == short_ ## NAME ## _type_node \
3977 || type1 == unsigned_short_ ## NAME ## _type_node) \
3978 return unsignedp ? unsigned_short_ ## NAME ## _type_node \
3979 : short_ ## NAME ## _type_node; \
3980 if (type1 == NAME ## _type_node \
3981 || type1 == unsigned_ ## NAME ## _type_node) \
3982 return unsignedp ? unsigned_ ## NAME ## _type_node \
3983 : NAME ## _type_node; \
3984 if (type1 == long_ ## NAME ## _type_node \
3985 || type1 == unsigned_long_ ## NAME ## _type_node) \
3986 return unsignedp ? unsigned_long_ ## NAME ## _type_node \
3987 : long_ ## NAME ## _type_node; \
3988 if (type1 == long_long_ ## NAME ## _type_node \
3989 || type1 == unsigned_long_long_ ## NAME ## _type_node) \
3990 return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \
3991 : long_long_ ## NAME ## _type_node;
3993 #define GIMPLE_FIXED_MODE_TYPES(NAME) \
3994 if (type1 == NAME ## _type_node \
3995 || type1 == u ## NAME ## _type_node) \
3996 return unsignedp ? u ## NAME ## _type_node \
3997 : NAME ## _type_node;
3999 #define GIMPLE_FIXED_TYPES_SAT(NAME) \
4000 if (type1 == sat_ ## short_ ## NAME ## _type_node \
4001 || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \
4002 return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \
4003 : sat_ ## short_ ## NAME ## _type_node; \
4004 if (type1 == sat_ ## NAME ## _type_node \
4005 || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \
4006 return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \
4007 : sat_ ## NAME ## _type_node; \
4008 if (type1 == sat_ ## long_ ## NAME ## _type_node \
4009 || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \
4010 return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \
4011 : sat_ ## long_ ## NAME ## _type_node; \
4012 if (type1 == sat_ ## long_long_ ## NAME ## _type_node \
4013 || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \
4014 return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \
4015 : sat_ ## long_long_ ## NAME ## _type_node;
4017 #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \
4018 if (type1 == sat_ ## NAME ## _type_node \
4019 || type1 == sat_ ## u ## NAME ## _type_node) \
4020 return unsignedp ? sat_ ## u ## NAME ## _type_node \
4021 : sat_ ## NAME ## _type_node;
4023 GIMPLE_FIXED_TYPES (fract
);
4024 GIMPLE_FIXED_TYPES_SAT (fract
);
4025 GIMPLE_FIXED_TYPES (accum
);
4026 GIMPLE_FIXED_TYPES_SAT (accum
);
4028 GIMPLE_FIXED_MODE_TYPES (qq
);
4029 GIMPLE_FIXED_MODE_TYPES (hq
);
4030 GIMPLE_FIXED_MODE_TYPES (sq
);
4031 GIMPLE_FIXED_MODE_TYPES (dq
);
4032 GIMPLE_FIXED_MODE_TYPES (tq
);
4033 GIMPLE_FIXED_MODE_TYPES_SAT (qq
);
4034 GIMPLE_FIXED_MODE_TYPES_SAT (hq
);
4035 GIMPLE_FIXED_MODE_TYPES_SAT (sq
);
4036 GIMPLE_FIXED_MODE_TYPES_SAT (dq
);
4037 GIMPLE_FIXED_MODE_TYPES_SAT (tq
);
4038 GIMPLE_FIXED_MODE_TYPES (ha
);
4039 GIMPLE_FIXED_MODE_TYPES (sa
);
4040 GIMPLE_FIXED_MODE_TYPES (da
);
4041 GIMPLE_FIXED_MODE_TYPES (ta
);
4042 GIMPLE_FIXED_MODE_TYPES_SAT (ha
);
4043 GIMPLE_FIXED_MODE_TYPES_SAT (sa
);
4044 GIMPLE_FIXED_MODE_TYPES_SAT (da
);
4045 GIMPLE_FIXED_MODE_TYPES_SAT (ta
);
4047 /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not
4048 the precision; they have precision set to match their range, but
4049 may use a wider mode to match an ABI. If we change modes, we may
4050 wind up with bad conversions. For INTEGER_TYPEs in C, must check
4051 the precision as well, so as to yield correct results for
4052 bit-field types. C++ does not have these separate bit-field
4053 types, and producing a signed or unsigned variant of an
4054 ENUMERAL_TYPE may cause other problems as well. */
4055 if (!INTEGRAL_TYPE_P (type
)
4056 || TYPE_UNSIGNED (type
) == unsignedp
)
4059 #define TYPE_OK(node) \
4060 (TYPE_MODE (type) == TYPE_MODE (node) \
4061 && TYPE_PRECISION (type) == TYPE_PRECISION (node))
4062 if (TYPE_OK (signed_char_type_node
))
4063 return unsignedp
? unsigned_char_type_node
: signed_char_type_node
;
4064 if (TYPE_OK (integer_type_node
))
4065 return unsignedp
? unsigned_type_node
: integer_type_node
;
4066 if (TYPE_OK (short_integer_type_node
))
4067 return unsignedp
? short_unsigned_type_node
: short_integer_type_node
;
4068 if (TYPE_OK (long_integer_type_node
))
4069 return unsignedp
? long_unsigned_type_node
: long_integer_type_node
;
4070 if (TYPE_OK (long_long_integer_type_node
))
4072 ? long_long_unsigned_type_node
4073 : long_long_integer_type_node
);
4075 #if HOST_BITS_PER_WIDE_INT >= 64
4076 if (TYPE_OK (intTI_type_node
))
4077 return unsignedp
? unsigned_intTI_type_node
: intTI_type_node
;
4079 if (TYPE_OK (intDI_type_node
))
4080 return unsignedp
? unsigned_intDI_type_node
: intDI_type_node
;
4081 if (TYPE_OK (intSI_type_node
))
4082 return unsignedp
? unsigned_intSI_type_node
: intSI_type_node
;
4083 if (TYPE_OK (intHI_type_node
))
4084 return unsignedp
? unsigned_intHI_type_node
: intHI_type_node
;
4085 if (TYPE_OK (intQI_type_node
))
4086 return unsignedp
? unsigned_intQI_type_node
: intQI_type_node
;
4088 #undef GIMPLE_FIXED_TYPES
4089 #undef GIMPLE_FIXED_MODE_TYPES
4090 #undef GIMPLE_FIXED_TYPES_SAT
4091 #undef GIMPLE_FIXED_MODE_TYPES_SAT
4094 return build_nonstandard_integer_type (TYPE_PRECISION (type
), unsignedp
);
4098 /* Return an unsigned type the same as TYPE in other respects. */
4101 gimple_unsigned_type (tree type
)
4103 return gimple_signed_or_unsigned_type (true, type
);
4107 /* Return a signed type the same as TYPE in other respects. */
4110 gimple_signed_type (tree type
)
4112 return gimple_signed_or_unsigned_type (false, type
);
4116 /* Return the typed-based alias set for T, which may be an expression
4117 or a type. Return -1 if we don't do anything special. */
4120 gimple_get_alias_set (tree t
)
4122 static bool recursing_p
;
4125 /* Permit type-punning when accessing a union, provided the access
4126 is directly through the union. For example, this code does not
4127 permit taking the address of a union member and then storing
4128 through it. Even the type-punning allowed here is a GCC
4129 extension, albeit a common and useful one; the C standard says
4130 that such accesses have implementation-defined behavior. */
4132 TREE_CODE (u
) == COMPONENT_REF
|| TREE_CODE (u
) == ARRAY_REF
;
4133 u
= TREE_OPERAND (u
, 0))
4134 if (TREE_CODE (u
) == COMPONENT_REF
4135 && TREE_CODE (TREE_TYPE (TREE_OPERAND (u
, 0))) == UNION_TYPE
)
4138 /* That's all the expressions we handle specially. */
4142 /* For convenience, follow the C standard when dealing with
4143 character types. Any object may be accessed via an lvalue that
4144 has character type. */
4145 if (t
== char_type_node
4146 || t
== signed_char_type_node
4147 || t
== unsigned_char_type_node
)
4150 /* Allow aliasing between signed and unsigned variants of the same
4151 type. We treat the signed variant as canonical. */
4152 if (TREE_CODE (t
) == INTEGER_TYPE
&& TYPE_UNSIGNED (t
))
4154 tree t1
= gimple_signed_type (t
);
4156 /* t1 == t can happen for boolean nodes which are always unsigned. */
4158 return get_alias_set (t1
);
4160 else if (POINTER_TYPE_P (t
))
4164 /* ??? We can end up creating cycles with TYPE_MAIN_VARIANT
4165 and TYPE_CANONICAL. Avoid recursing endlessly between
4166 this langhook and get_alias_set. */
4170 /* Unfortunately, there is no canonical form of a pointer type.
4171 In particular, if we have `typedef int I', then `int *', and
4172 `I *' are different types. So, we have to pick a canonical
4173 representative. We do this below.
4175 Technically, this approach is actually more conservative that
4176 it needs to be. In particular, `const int *' and `int *'
4177 should be in different alias sets, according to the C and C++
4178 standard, since their types are not the same, and so,
4179 technically, an `int **' and `const int **' cannot point at
4182 But, the standard is wrong. In particular, this code is
4187 const int* const* cipp = ipp;
4188 And, it doesn't make sense for that to be legal unless you
4189 can dereference IPP and CIPP. So, we ignore cv-qualifiers on
4190 the pointed-to types. This issue has been reported to the
4192 t1
= build_type_no_quals (t
);
4197 set
= get_alias_set (t1
);
4198 recursing_p
= false;
4207 /* Data structure used to count the number of dereferences to PTR
4208 inside an expression. */
4212 unsigned num_stores
;
4216 /* Helper for count_uses_and_derefs. Called by walk_tree to look for
4217 (ALIGN/MISALIGNED_)INDIRECT_REF nodes for the pointer passed in DATA. */
4220 count_ptr_derefs (tree
*tp
, int *walk_subtrees
, void *data
)
4222 struct walk_stmt_info
*wi_p
= (struct walk_stmt_info
*) data
;
4223 struct count_ptr_d
*count_p
= (struct count_ptr_d
*) wi_p
->info
;
4225 /* Do not walk inside ADDR_EXPR nodes. In the expression &ptr->fld,
4226 pointer 'ptr' is *not* dereferenced, it is simply used to compute
4227 the address of 'fld' as 'ptr + offsetof(fld)'. */
4228 if (TREE_CODE (*tp
) == ADDR_EXPR
)
4234 if (INDIRECT_REF_P (*tp
) && TREE_OPERAND (*tp
, 0) == count_p
->ptr
)
4237 count_p
->num_stores
++;
4239 count_p
->num_loads
++;
4245 /* Count the number of direct and indirect uses for pointer PTR in
4246 statement STMT. The number of direct uses is stored in
4247 *NUM_USES_P. Indirect references are counted separately depending
4248 on whether they are store or load operations. The counts are
4249 stored in *NUM_STORES_P and *NUM_LOADS_P. */
4252 count_uses_and_derefs (tree ptr
, gimple stmt
, unsigned *num_uses_p
,
4253 unsigned *num_loads_p
, unsigned *num_stores_p
)
4262 /* Find out the total number of uses of PTR in STMT. */
4263 FOR_EACH_SSA_TREE_OPERAND (use
, stmt
, i
, SSA_OP_USE
)
4267 /* Now count the number of indirect references to PTR. This is
4268 truly awful, but we don't have much choice. There are no parent
4269 pointers inside INDIRECT_REFs, so an expression like
4270 '*x_1 = foo (x_1, *x_1)' needs to be traversed piece by piece to
4271 find all the indirect and direct uses of x_1 inside. The only
4272 shortcut we can take is the fact that GIMPLE only allows
4273 INDIRECT_REFs inside the expressions below. */
4274 if (is_gimple_assign (stmt
)
4275 || gimple_code (stmt
) == GIMPLE_RETURN
4276 || gimple_code (stmt
) == GIMPLE_ASM
4277 || is_gimple_call (stmt
))
4279 struct walk_stmt_info wi
;
4280 struct count_ptr_d count
;
4283 count
.num_stores
= 0;
4284 count
.num_loads
= 0;
4286 memset (&wi
, 0, sizeof (wi
));
4288 walk_gimple_op (stmt
, count_ptr_derefs
, &wi
);
4290 *num_stores_p
= count
.num_stores
;
4291 *num_loads_p
= count
.num_loads
;
4294 gcc_assert (*num_uses_p
>= *num_loads_p
+ *num_stores_p
);
4297 /* From a tree operand OP return the base of a load or store operation
4298 or NULL_TREE if OP is not a load or a store. */
4301 get_base_loadstore (tree op
)
4303 while (handled_component_p (op
))
4304 op
= TREE_OPERAND (op
, 0);
4306 || INDIRECT_REF_P (op
)
4307 || TREE_CODE (op
) == TARGET_MEM_REF
)
4312 /* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and
4313 VISIT_ADDR if non-NULL on loads, store and address-taken operands
4314 passing the STMT, the base of the operand and DATA to it. The base
4315 will be either a decl, an indirect reference (including TARGET_MEM_REF)
4316 or the argument of an address expression.
4317 Returns the results of these callbacks or'ed. */
4320 walk_stmt_load_store_addr_ops (gimple stmt
, void *data
,
4321 bool (*visit_load
)(gimple
, tree
, void *),
4322 bool (*visit_store
)(gimple
, tree
, void *),
4323 bool (*visit_addr
)(gimple
, tree
, void *))
4327 if (gimple_assign_single_p (stmt
))
4332 lhs
= get_base_loadstore (gimple_assign_lhs (stmt
));
4334 ret
|= visit_store (stmt
, lhs
, data
);
4336 rhs
= gimple_assign_rhs1 (stmt
);
4337 while (handled_component_p (rhs
))
4338 rhs
= TREE_OPERAND (rhs
, 0);
4341 if (TREE_CODE (rhs
) == ADDR_EXPR
)
4342 ret
|= visit_addr (stmt
, TREE_OPERAND (rhs
, 0), data
);
4343 else if (TREE_CODE (rhs
) == TARGET_MEM_REF
4344 && TMR_BASE (rhs
) != NULL_TREE
4345 && TREE_CODE (TMR_BASE (rhs
)) == ADDR_EXPR
)
4346 ret
|= visit_addr (stmt
, TREE_OPERAND (TMR_BASE (rhs
), 0), data
);
4347 else if (TREE_CODE (rhs
) == OBJ_TYPE_REF
4348 && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs
)) == ADDR_EXPR
)
4349 ret
|= visit_addr (stmt
, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs
),
4351 lhs
= gimple_assign_lhs (stmt
);
4352 if (TREE_CODE (lhs
) == TARGET_MEM_REF
4353 && TMR_BASE (lhs
) != NULL_TREE
4354 && TREE_CODE (TMR_BASE (lhs
)) == ADDR_EXPR
)
4355 ret
|= visit_addr (stmt
, TREE_OPERAND (TMR_BASE (lhs
), 0), data
);
4359 rhs
= get_base_loadstore (rhs
);
4361 ret
|= visit_load (stmt
, rhs
, data
);
4365 && (is_gimple_assign (stmt
)
4366 || gimple_code (stmt
) == GIMPLE_COND
))
4368 for (i
= 0; i
< gimple_num_ops (stmt
); ++i
)
4369 if (gimple_op (stmt
, i
)
4370 && TREE_CODE (gimple_op (stmt
, i
)) == ADDR_EXPR
)
4371 ret
|= visit_addr (stmt
, TREE_OPERAND (gimple_op (stmt
, i
), 0), data
);
4373 else if (is_gimple_call (stmt
))
4377 tree lhs
= gimple_call_lhs (stmt
);
4380 lhs
= get_base_loadstore (lhs
);
4382 ret
|= visit_store (stmt
, lhs
, data
);
4385 if (visit_load
|| visit_addr
)
4386 for (i
= 0; i
< gimple_call_num_args (stmt
); ++i
)
4388 tree rhs
= gimple_call_arg (stmt
, i
);
4390 && TREE_CODE (rhs
) == ADDR_EXPR
)
4391 ret
|= visit_addr (stmt
, TREE_OPERAND (rhs
, 0), data
);
4392 else if (visit_load
)
4394 rhs
= get_base_loadstore (rhs
);
4396 ret
|= visit_load (stmt
, rhs
, data
);
4400 && gimple_call_chain (stmt
)
4401 && TREE_CODE (gimple_call_chain (stmt
)) == ADDR_EXPR
)
4402 ret
|= visit_addr (stmt
, TREE_OPERAND (gimple_call_chain (stmt
), 0),
4405 && gimple_call_return_slot_opt_p (stmt
)
4406 && gimple_call_lhs (stmt
) != NULL_TREE
4407 && TREE_ADDRESSABLE (TREE_TYPE (gimple_call_lhs (stmt
))))
4408 ret
|= visit_addr (stmt
, gimple_call_lhs (stmt
), data
);
4410 else if (gimple_code (stmt
) == GIMPLE_ASM
)
4413 const char *constraint
;
4414 const char **oconstraints
;
4415 bool allows_mem
, allows_reg
, is_inout
;
4416 noutputs
= gimple_asm_noutputs (stmt
);
4417 oconstraints
= XALLOCAVEC (const char *, noutputs
);
4418 if (visit_store
|| visit_addr
)
4419 for (i
= 0; i
< gimple_asm_noutputs (stmt
); ++i
)
4421 tree link
= gimple_asm_output_op (stmt
, i
);
4422 tree op
= get_base_loadstore (TREE_VALUE (link
));
4423 if (op
&& visit_store
)
4424 ret
|= visit_store (stmt
, op
, data
);
4427 constraint
= TREE_STRING_POINTER
4428 (TREE_VALUE (TREE_PURPOSE (link
)));
4429 oconstraints
[i
] = constraint
;
4430 parse_output_constraint (&constraint
, i
, 0, 0, &allows_mem
,
4431 &allows_reg
, &is_inout
);
4432 if (op
&& !allows_reg
&& allows_mem
)
4433 ret
|= visit_addr (stmt
, op
, data
);
4436 if (visit_load
|| visit_addr
)
4437 for (i
= 0; i
< gimple_asm_ninputs (stmt
); ++i
)
4439 tree link
= gimple_asm_input_op (stmt
, i
);
4440 tree op
= TREE_VALUE (link
);
4442 && TREE_CODE (op
) == ADDR_EXPR
)
4443 ret
|= visit_addr (stmt
, TREE_OPERAND (op
, 0), data
);
4444 else if (visit_load
|| visit_addr
)
4446 op
= get_base_loadstore (op
);
4450 ret
|= visit_load (stmt
, op
, data
);
4453 constraint
= TREE_STRING_POINTER
4454 (TREE_VALUE (TREE_PURPOSE (link
)));
4455 parse_input_constraint (&constraint
, 0, 0, noutputs
,
4457 &allows_mem
, &allows_reg
);
4458 if (!allows_reg
&& allows_mem
)
4459 ret
|= visit_addr (stmt
, op
, data
);
4465 else if (gimple_code (stmt
) == GIMPLE_RETURN
)
4467 tree op
= gimple_return_retval (stmt
);
4471 && TREE_CODE (op
) == ADDR_EXPR
)
4472 ret
|= visit_addr (stmt
, TREE_OPERAND (op
, 0), data
);
4473 else if (visit_load
)
4475 op
= get_base_loadstore (op
);
4477 ret
|= visit_load (stmt
, op
, data
);
4482 && gimple_code (stmt
) == GIMPLE_PHI
)
4484 for (i
= 0; i
< gimple_phi_num_args (stmt
); ++i
)
4486 tree op
= PHI_ARG_DEF (stmt
, i
);
4487 if (TREE_CODE (op
) == ADDR_EXPR
)
4488 ret
|= visit_addr (stmt
, TREE_OPERAND (op
, 0), data
);
4495 /* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP
4496 should make a faster clone for this case. */
4499 walk_stmt_load_store_ops (gimple stmt
, void *data
,
4500 bool (*visit_load
)(gimple
, tree
, void *),
4501 bool (*visit_store
)(gimple
, tree
, void *))
4503 return walk_stmt_load_store_addr_ops (stmt
, data
,
4504 visit_load
, visit_store
, NULL
);
4507 /* Helper for gimple_ior_addresses_taken_1. */
4510 gimple_ior_addresses_taken_1 (gimple stmt ATTRIBUTE_UNUSED
,
4511 tree addr
, void *data
)
4513 bitmap addresses_taken
= (bitmap
)data
;
4514 while (handled_component_p (addr
))
4515 addr
= TREE_OPERAND (addr
, 0);
4518 bitmap_set_bit (addresses_taken
, DECL_UID (addr
));
4524 /* Set the bit for the uid of all decls that have their address taken
4525 in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there
4526 were any in this stmt. */
4529 gimple_ior_addresses_taken (bitmap addresses_taken
, gimple stmt
)
4531 return walk_stmt_load_store_addr_ops (stmt
, addresses_taken
, NULL
, NULL
,
4532 gimple_ior_addresses_taken_1
);
4536 /* Return a printable name for symbol DECL. */
4539 gimple_decl_printable_name (tree decl
, int verbosity
)
4541 gcc_assert (decl
&& DECL_NAME (decl
));
4543 if (DECL_ASSEMBLER_NAME_SET_P (decl
))
4545 const char *str
, *mangled_str
;
4546 int dmgl_opts
= DMGL_NO_OPTS
;
4550 dmgl_opts
= DMGL_VERBOSE
4554 if (TREE_CODE (decl
) == FUNCTION_DECL
)
4555 dmgl_opts
|= DMGL_PARAMS
;
4558 mangled_str
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl
));
4559 str
= cplus_demangle_v3 (mangled_str
, dmgl_opts
);
4560 return (str
) ? str
: mangled_str
;
4563 return IDENTIFIER_POINTER (DECL_NAME (decl
));
4567 /* Fold a OBJ_TYPE_REF expression to the address of a function.
4568 KNOWN_TYPE carries the true type of OBJ_TYPE_REF_OBJECT(REF). Adapted
4569 from cp_fold_obj_type_ref, but it tolerates types with no binfo
4573 gimple_fold_obj_type_ref (tree ref
, tree known_type
)
4575 HOST_WIDE_INT index
;
4580 if (TYPE_BINFO (known_type
) == NULL_TREE
)
4583 v
= BINFO_VIRTUALS (TYPE_BINFO (known_type
));
4584 index
= tree_low_cst (OBJ_TYPE_REF_TOKEN (ref
), 1);
4588 i
+= (TARGET_VTABLE_USES_DESCRIPTORS
4589 ? TARGET_VTABLE_USES_DESCRIPTORS
: 1);
4593 fndecl
= TREE_VALUE (v
);
4595 #ifdef ENABLE_CHECKING
4596 gcc_assert (tree_int_cst_equal (OBJ_TYPE_REF_TOKEN (ref
),
4597 DECL_VINDEX (fndecl
)));
4600 cgraph_node (fndecl
)->local
.vtable_method
= true;
4602 return build_fold_addr_expr (fndecl
);
4605 #include "gt-gimple.h"