1 /* Gimple IR support functions.
3 Copyright (C) 2007-2024 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"
30 #include "diagnostic.h"
32 #include "fold-const.h"
34 #include "stor-layout.h"
35 #include "internal-fn.h"
37 #include "gimple-iterator.h"
38 #include "gimple-walk.h"
43 #include "gimple-pretty-print.h"
44 #include "stringpool.h"
48 #include "langhooks.h"
49 #include "attr-fnspec.h"
50 #include "ipa-modref-tree.h"
51 #include "ipa-modref.h"
54 /* All the tuples have their operand vector (if present) at the very bottom
55 of the structure. Therefore, the offset required to find the
56 operands vector the size of the structure minus the size of the 1
57 element tree array at the end (see gimple_ops). */
58 #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \
59 (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0),
60 EXPORTED_CONST
size_t gimple_ops_offset_
[] = {
61 #include "gsstruct.def"
65 #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof (struct STRUCT),
66 static const size_t gsstruct_code_size
[] = {
67 #include "gsstruct.def"
71 #define DEFGSCODE(SYM, NAME, GSSCODE) NAME,
72 const char *const gimple_code_name
[] = {
77 #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE,
78 EXPORTED_CONST
enum gimple_statement_structure_enum gss_for_code_
[] = {
85 uint64_t gimple_alloc_counts
[(int) gimple_alloc_kind_all
];
86 uint64_t gimple_alloc_sizes
[(int) gimple_alloc_kind_all
];
88 /* Keep in sync with gimple.h:enum gimple_alloc_kind. */
89 static const char * const gimple_alloc_kind_names
[] = {
96 /* Static gimple tuple members. */
97 const enum gimple_code
gassign::code_
;
98 const enum gimple_code
gcall::code_
;
99 const enum gimple_code
gcond::code_
;
102 /* Gimple tuple constructors.
103 Note: Any constructor taking a ``gimple_seq'' as a parameter, can
104 be passed a NULL to start with an empty sequence. */
106 /* Set the code for statement G to CODE. */
109 gimple_set_code (gimple
*g
, enum gimple_code code
)
114 /* Return the number of bytes needed to hold a GIMPLE statement with
118 gimple_size (enum gimple_code code
, unsigned num_ops
)
120 size_t size
= gsstruct_code_size
[gss_for_code (code
)];
122 size
+= (sizeof (tree
) * (num_ops
- 1));
126 /* Initialize GIMPLE statement G with CODE and NUM_OPS. */
129 gimple_init (gimple
*g
, enum gimple_code code
, unsigned num_ops
)
131 gimple_set_code (g
, code
);
132 gimple_set_num_ops (g
, num_ops
);
134 /* Do not call gimple_set_modified here as it has other side
135 effects and this tuple is still not completely built. */
137 gimple_init_singleton (g
);
140 /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS
144 gimple_alloc (enum gimple_code code
, unsigned num_ops MEM_STAT_DECL
)
149 size
= gimple_size (code
, num_ops
);
150 if (GATHER_STATISTICS
)
152 enum gimple_alloc_kind kind
= gimple_alloc_kind (code
);
153 gimple_alloc_counts
[(int) kind
]++;
154 gimple_alloc_sizes
[(int) kind
] += size
;
157 stmt
= ggc_alloc_cleared_gimple_statement_stat (size PASS_MEM_STAT
);
158 gimple_init (stmt
, code
, num_ops
);
162 /* Set SUBCODE to be the code of the expression computed by statement G. */
165 gimple_set_subcode (gimple
*g
, unsigned subcode
)
167 /* We only have 16 bits for the RHS code. Assert that we are not
169 gcc_assert (subcode
< (1 << 16));
170 g
->subcode
= subcode
;
175 /* Build a tuple with operands. CODE is the statement to build (which
176 must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the subcode
177 for the new tuple. NUM_OPS is the number of operands to allocate. */
179 #define gimple_build_with_ops(c, s, n) \
180 gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO)
183 gimple_build_with_ops_stat (enum gimple_code code
, unsigned subcode
,
184 unsigned num_ops MEM_STAT_DECL
)
186 gimple
*s
= gimple_alloc (code
, num_ops PASS_MEM_STAT
);
187 gimple_set_subcode (s
, subcode
);
193 /* Build a GIMPLE_RETURN statement returning RETVAL. */
196 gimple_build_return (tree retval
)
199 = as_a
<greturn
*> (gimple_build_with_ops (GIMPLE_RETURN
, ERROR_MARK
,
202 gimple_return_set_retval (s
, retval
);
206 /* Reset alias information on call S. */
209 gimple_call_reset_alias_info (gcall
*s
)
211 if (gimple_call_flags (s
) & ECF_CONST
)
212 memset (gimple_call_use_set (s
), 0, sizeof (struct pt_solution
));
214 pt_solution_reset (gimple_call_use_set (s
));
215 if (gimple_call_flags (s
) & (ECF_CONST
|ECF_PURE
|ECF_NOVOPS
))
216 memset (gimple_call_clobber_set (s
), 0, sizeof (struct pt_solution
));
218 pt_solution_reset (gimple_call_clobber_set (s
));
221 /* Helper for gimple_build_call, gimple_build_call_valist,
222 gimple_build_call_vec and gimple_build_call_from_tree. Build the basic
223 components of a GIMPLE_CALL statement to function FN with NARGS
226 static inline gcall
*
227 gimple_build_call_1 (tree fn
, unsigned nargs
)
230 = as_a
<gcall
*> (gimple_build_with_ops (GIMPLE_CALL
, ERROR_MARK
,
232 if (TREE_CODE (fn
) == FUNCTION_DECL
)
233 fn
= build_fold_addr_expr (fn
);
234 gimple_set_op (s
, 1, fn
);
235 gimple_call_set_fntype (s
, TREE_TYPE (TREE_TYPE (fn
)));
236 gimple_call_reset_alias_info (s
);
241 /* Build a GIMPLE_CALL statement to function FN with the arguments
242 specified in vector ARGS. */
245 gimple_build_call_vec (tree fn
, const vec
<tree
> &args
)
248 unsigned nargs
= args
.length ();
249 gcall
*call
= gimple_build_call_1 (fn
, nargs
);
251 for (i
= 0; i
< nargs
; i
++)
252 gimple_call_set_arg (call
, i
, args
[i
]);
258 /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of
259 arguments. The ... are the arguments. */
262 gimple_build_call (tree fn
, unsigned nargs
, ...)
268 gcc_assert (TREE_CODE (fn
) == FUNCTION_DECL
|| is_gimple_call_addr (fn
));
270 call
= gimple_build_call_1 (fn
, nargs
);
272 va_start (ap
, nargs
);
273 for (i
= 0; i
< nargs
; i
++)
274 gimple_call_set_arg (call
, i
, va_arg (ap
, tree
));
281 /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of
282 arguments. AP contains the arguments. */
285 gimple_build_call_valist (tree fn
, unsigned nargs
, va_list ap
)
290 gcc_assert (TREE_CODE (fn
) == FUNCTION_DECL
|| is_gimple_call_addr (fn
));
292 call
= gimple_build_call_1 (fn
, nargs
);
294 for (i
= 0; i
< nargs
; i
++)
295 gimple_call_set_arg (call
, i
, va_arg (ap
, tree
));
301 /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec.
302 Build the basic components of a GIMPLE_CALL statement to internal
303 function FN with NARGS arguments. */
305 static inline gcall
*
306 gimple_build_call_internal_1 (enum internal_fn fn
, unsigned nargs
)
309 = as_a
<gcall
*> (gimple_build_with_ops (GIMPLE_CALL
, ERROR_MARK
,
311 s
->subcode
|= GF_CALL_INTERNAL
;
312 gimple_call_set_internal_fn (s
, fn
);
313 gimple_call_reset_alias_info (s
);
318 /* Build a GIMPLE_CALL statement to internal function FN. NARGS is
319 the number of arguments. The ... are the arguments. */
322 gimple_build_call_internal (enum internal_fn fn
, unsigned nargs
, ...)
328 call
= gimple_build_call_internal_1 (fn
, nargs
);
329 va_start (ap
, nargs
);
330 for (i
= 0; i
< nargs
; i
++)
331 gimple_call_set_arg (call
, i
, va_arg (ap
, tree
));
338 /* Build a GIMPLE_CALL statement to internal function FN with the arguments
339 specified in vector ARGS. */
342 gimple_build_call_internal_vec (enum internal_fn fn
, const vec
<tree
> &args
)
347 nargs
= args
.length ();
348 call
= gimple_build_call_internal_1 (fn
, nargs
);
349 for (i
= 0; i
< nargs
; i
++)
350 gimple_call_set_arg (call
, i
, args
[i
]);
356 /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is
357 assumed to be in GIMPLE form already. Minimal checking is done of
361 gimple_build_call_from_tree (tree t
, tree fnptrtype
)
366 gcc_assert (TREE_CODE (t
) == CALL_EXPR
);
368 nargs
= call_expr_nargs (t
);
370 tree fndecl
= NULL_TREE
;
371 if (CALL_EXPR_FN (t
) == NULL_TREE
)
372 call
= gimple_build_call_internal_1 (CALL_EXPR_IFN (t
), nargs
);
375 fndecl
= get_callee_fndecl (t
);
376 call
= gimple_build_call_1 (fndecl
? fndecl
: CALL_EXPR_FN (t
), nargs
);
379 for (i
= 0; i
< nargs
; i
++)
380 gimple_call_set_arg (call
, i
, CALL_EXPR_ARG (t
, i
));
382 gimple_set_block (call
, TREE_BLOCK (t
));
383 gimple_set_location (call
, EXPR_LOCATION (t
));
385 /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */
386 gimple_call_set_chain (call
, CALL_EXPR_STATIC_CHAIN (t
));
387 gimple_call_set_tail (call
, CALL_EXPR_TAILCALL (t
));
388 gimple_call_set_must_tail (call
, CALL_EXPR_MUST_TAIL_CALL (t
));
389 gimple_call_set_return_slot_opt (call
, CALL_EXPR_RETURN_SLOT_OPT (t
));
391 && fndecl_built_in_p (fndecl
, BUILT_IN_NORMAL
)
392 && ALLOCA_FUNCTION_CODE_P (DECL_FUNCTION_CODE (fndecl
)))
393 gimple_call_set_alloca_for_var (call
, CALL_ALLOCA_FOR_VAR_P (t
));
395 && (DECL_IS_OPERATOR_NEW_P (fndecl
)
396 || DECL_IS_OPERATOR_DELETE_P (fndecl
)))
397 gimple_call_set_from_new_or_delete (call
, CALL_FROM_NEW_OR_DELETE_P (t
));
399 gimple_call_set_from_thunk (call
, CALL_FROM_THUNK_P (t
));
400 gimple_call_set_va_arg_pack (call
, CALL_EXPR_VA_ARG_PACK (t
));
401 gimple_call_set_nothrow (call
, TREE_NOTHROW (t
));
403 gimple_call_set_expected_throw (call
,
404 flags_from_decl_or_type (fndecl
)
406 gimple_call_set_by_descriptor (call
, CALL_EXPR_BY_DESCRIPTOR (t
));
407 copy_warning (call
, t
);
411 gimple_call_set_fntype (call
, TREE_TYPE (fnptrtype
));
413 /* Check if it's an indirect CALL and the type has the
414 nocf_check attribute. In that case propagate the information
415 to the gimple CALL insn. */
418 gcc_assert (POINTER_TYPE_P (fnptrtype
));
419 tree fntype
= TREE_TYPE (fnptrtype
);
421 if (lookup_attribute ("nocf_check", TYPE_ATTRIBUTES (fntype
)))
422 gimple_call_set_nocf_check (call
, true);
429 /* Build a gcall to __builtin_unreachable as rewritten by
430 -fsanitize=unreachable. */
433 gimple_build_builtin_unreachable (location_t loc
)
435 tree data
= NULL_TREE
;
436 tree fn
= sanitize_unreachable_fn (&data
, loc
);
437 gcall
*g
= gimple_build_call (fn
, data
!= NULL_TREE
, data
);
438 gimple_call_set_ctrl_altering (g
, true);
439 gimple_set_location (g
, loc
);
443 /* Build a GIMPLE_ASSIGN statement.
445 LHS of the assignment.
446 RHS of the assignment which can be unary or binary. */
449 gimple_build_assign (tree lhs
, tree rhs MEM_STAT_DECL
)
451 enum tree_code subcode
;
454 extract_ops_from_tree (rhs
, &subcode
, &op1
, &op2
, &op3
);
455 return gimple_build_assign (lhs
, subcode
, op1
, op2
, op3 PASS_MEM_STAT
);
459 /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands
462 static inline gassign
*
463 gimple_build_assign_1 (tree lhs
, enum tree_code subcode
, tree op1
,
464 tree op2
, tree op3 MEM_STAT_DECL
)
469 /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the
471 num_ops
= get_gimple_rhs_num_ops (subcode
) + 1;
473 p
= as_a
<gassign
*> (
474 gimple_build_with_ops_stat (GIMPLE_ASSIGN
, (unsigned)subcode
, num_ops
476 gimple_assign_set_lhs (p
, lhs
);
477 gimple_assign_set_rhs1 (p
, op1
);
480 gcc_assert (num_ops
> 2);
481 gimple_assign_set_rhs2 (p
, op2
);
486 gcc_assert (num_ops
> 3);
487 gimple_assign_set_rhs3 (p
, op3
);
493 /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands
497 gimple_build_assign (tree lhs
, enum tree_code subcode
, tree op1
,
498 tree op2
, tree op3 MEM_STAT_DECL
)
500 return gimple_build_assign_1 (lhs
, subcode
, op1
, op2
, op3 PASS_MEM_STAT
);
503 /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands
507 gimple_build_assign (tree lhs
, enum tree_code subcode
, tree op1
,
508 tree op2 MEM_STAT_DECL
)
510 return gimple_build_assign_1 (lhs
, subcode
, op1
, op2
, NULL_TREE
514 /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operand OP1. */
517 gimple_build_assign (tree lhs
, enum tree_code subcode
, tree op1 MEM_STAT_DECL
)
519 return gimple_build_assign_1 (lhs
, subcode
, op1
, NULL_TREE
, NULL_TREE
524 /* Build a GIMPLE_COND statement.
526 PRED is the condition used to compare LHS and the RHS.
527 T_LABEL is the label to jump to if the condition is true.
528 F_LABEL is the label to jump to otherwise. */
531 gimple_build_cond (enum tree_code pred_code
, tree lhs
, tree rhs
,
532 tree t_label
, tree f_label
)
536 gcc_assert (TREE_CODE_CLASS (pred_code
) == tcc_comparison
);
537 p
= as_a
<gcond
*> (gimple_build_with_ops (GIMPLE_COND
, pred_code
, 4));
538 gimple_cond_set_lhs (p
, lhs
);
539 gimple_cond_set_rhs (p
, rhs
);
540 gimple_cond_set_true_label (p
, t_label
);
541 gimple_cond_set_false_label (p
, f_label
);
545 /* Build a GIMPLE_COND statement from the conditional expression tree
546 COND. T_LABEL and F_LABEL are as in gimple_build_cond. */
549 gimple_build_cond_from_tree (tree cond
, tree t_label
, tree f_label
)
554 gimple_cond_get_ops_from_tree (cond
, &code
, &lhs
, &rhs
);
555 return gimple_build_cond (code
, lhs
, rhs
, t_label
, f_label
);
558 /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable
559 boolean expression tree COND. */
562 gimple_cond_set_condition_from_tree (gcond
*stmt
, tree cond
)
567 gimple_cond_get_ops_from_tree (cond
, &code
, &lhs
, &rhs
);
568 gimple_cond_set_condition (stmt
, code
, lhs
, rhs
);
571 /* Build a GIMPLE_LABEL statement for LABEL. */
574 gimple_build_label (tree label
)
577 = as_a
<glabel
*> (gimple_build_with_ops (GIMPLE_LABEL
, ERROR_MARK
, 1));
578 gimple_label_set_label (p
, label
);
582 /* Build a GIMPLE_GOTO statement to label DEST. */
585 gimple_build_goto (tree dest
)
588 = as_a
<ggoto
*> (gimple_build_with_ops (GIMPLE_GOTO
, ERROR_MARK
, 1));
589 gimple_goto_set_dest (p
, dest
);
594 /* Build a GIMPLE_NOP statement. */
597 gimple_build_nop (void)
599 return gimple_alloc (GIMPLE_NOP
, 0);
603 /* Build a GIMPLE_BIND statement.
604 VARS are the variables in BODY.
605 BLOCK is the containing block. */
608 gimple_build_bind (tree vars
, gimple_seq body
, tree block
)
610 gbind
*p
= as_a
<gbind
*> (gimple_alloc (GIMPLE_BIND
, 0));
611 gimple_bind_set_vars (p
, vars
);
613 gimple_bind_set_body (p
, body
);
615 gimple_bind_set_block (p
, block
);
619 /* Helper function to set the simple fields of a asm stmt.
621 STRING is a pointer to a string that is the asm blocks assembly code.
622 NINPUT is the number of register inputs.
623 NOUTPUT is the number of register outputs.
624 NCLOBBERS is the number of clobbered registers.
628 gimple_build_asm_1 (const char *string
, unsigned ninputs
, unsigned noutputs
,
629 unsigned nclobbers
, unsigned nlabels
)
632 int size
= strlen (string
);
635 gimple_build_with_ops (GIMPLE_ASM
, ERROR_MARK
,
636 ninputs
+ noutputs
+ nclobbers
+ nlabels
));
642 p
->string
= ggc_alloc_string (string
, size
);
644 if (GATHER_STATISTICS
)
645 gimple_alloc_sizes
[(int) gimple_alloc_kind (GIMPLE_ASM
)] += size
;
650 /* Build a GIMPLE_ASM statement.
652 STRING is the assembly code.
653 NINPUT is the number of register inputs.
654 NOUTPUT is the number of register outputs.
655 NCLOBBERS is the number of clobbered registers.
656 INPUTS is a vector of the input register parameters.
657 OUTPUTS is a vector of the output register parameters.
658 CLOBBERS is a vector of the clobbered register parameters.
659 LABELS is a vector of destination labels. */
662 gimple_build_asm_vec (const char *string
, vec
<tree
, va_gc
> *inputs
,
663 vec
<tree
, va_gc
> *outputs
, vec
<tree
, va_gc
> *clobbers
,
664 vec
<tree
, va_gc
> *labels
)
669 p
= gimple_build_asm_1 (string
,
670 vec_safe_length (inputs
),
671 vec_safe_length (outputs
),
672 vec_safe_length (clobbers
),
673 vec_safe_length (labels
));
675 for (i
= 0; i
< vec_safe_length (inputs
); i
++)
676 gimple_asm_set_input_op (p
, i
, (*inputs
)[i
]);
678 for (i
= 0; i
< vec_safe_length (outputs
); i
++)
679 gimple_asm_set_output_op (p
, i
, (*outputs
)[i
]);
681 for (i
= 0; i
< vec_safe_length (clobbers
); i
++)
682 gimple_asm_set_clobber_op (p
, i
, (*clobbers
)[i
]);
684 for (i
= 0; i
< vec_safe_length (labels
); i
++)
685 gimple_asm_set_label_op (p
, i
, (*labels
)[i
]);
690 /* Build a GIMPLE_CATCH statement.
692 TYPES are the catch types.
693 HANDLER is the exception handler. */
696 gimple_build_catch (tree types
, gimple_seq handler
)
698 gcatch
*p
= as_a
<gcatch
*> (gimple_alloc (GIMPLE_CATCH
, 0));
699 gimple_catch_set_types (p
, types
);
701 gimple_catch_set_handler (p
, handler
);
706 /* Build a GIMPLE_EH_FILTER statement.
708 TYPES are the filter's types.
709 FAILURE is the filter's failure action. */
712 gimple_build_eh_filter (tree types
, gimple_seq failure
)
714 geh_filter
*p
= as_a
<geh_filter
*> (gimple_alloc (GIMPLE_EH_FILTER
, 0));
715 gimple_eh_filter_set_types (p
, types
);
717 gimple_eh_filter_set_failure (p
, failure
);
722 /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */
725 gimple_build_eh_must_not_throw (tree decl
)
727 geh_mnt
*p
= as_a
<geh_mnt
*> (gimple_alloc (GIMPLE_EH_MUST_NOT_THROW
, 0));
729 gcc_assert (TREE_CODE (decl
) == FUNCTION_DECL
);
730 gcc_assert (flags_from_decl_or_type (decl
) & ECF_NORETURN
);
731 gimple_eh_must_not_throw_set_fndecl (p
, decl
);
736 /* Build a GIMPLE_EH_ELSE statement. */
739 gimple_build_eh_else (gimple_seq n_body
, gimple_seq e_body
)
741 geh_else
*p
= as_a
<geh_else
*> (gimple_alloc (GIMPLE_EH_ELSE
, 0));
742 gimple_eh_else_set_n_body (p
, n_body
);
743 gimple_eh_else_set_e_body (p
, e_body
);
747 /* Build a GIMPLE_TRY statement.
749 EVAL is the expression to evaluate.
750 CLEANUP is the cleanup expression.
751 KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on
752 whether this is a try/catch or a try/finally respectively. */
755 gimple_build_try (gimple_seq eval
, gimple_seq cleanup
,
756 enum gimple_try_flags kind
)
760 gcc_assert (kind
== GIMPLE_TRY_CATCH
|| kind
== GIMPLE_TRY_FINALLY
);
761 p
= as_a
<gtry
*> (gimple_alloc (GIMPLE_TRY
, 0));
762 gimple_set_subcode (p
, kind
);
764 gimple_try_set_eval (p
, eval
);
766 gimple_try_set_cleanup (p
, cleanup
);
771 /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement.
773 CLEANUP is the cleanup expression. */
776 gimple_build_wce (gimple_seq cleanup
)
778 gimple
*p
= gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR
, 0);
780 gimple_wce_set_cleanup (p
, cleanup
);
786 /* Build a GIMPLE_RESX statement. */
789 gimple_build_resx (int region
)
792 = as_a
<gresx
*> (gimple_build_with_ops (GIMPLE_RESX
, ERROR_MARK
, 0));
798 /* The helper for constructing a gimple switch statement.
799 INDEX is the switch's index.
800 NLABELS is the number of labels in the switch excluding the default.
801 DEFAULT_LABEL is the default label for the switch statement. */
804 gimple_build_switch_nlabels (unsigned nlabels
, tree index
, tree default_label
)
806 /* nlabels + 1 default label + 1 index. */
807 gcc_checking_assert (default_label
);
808 gswitch
*p
= as_a
<gswitch
*> (gimple_build_with_ops (GIMPLE_SWITCH
,
811 gimple_switch_set_index (p
, index
);
812 gimple_switch_set_default_label (p
, default_label
);
816 /* Build a GIMPLE_SWITCH statement.
818 INDEX is the switch's index.
819 DEFAULT_LABEL is the default label
820 ARGS is a vector of labels excluding the default. */
823 gimple_build_switch (tree index
, tree default_label
, const vec
<tree
> &args
)
825 unsigned i
, nlabels
= args
.length ();
827 gswitch
*p
= gimple_build_switch_nlabels (nlabels
, index
, default_label
);
829 /* Copy the labels from the vector to the switch statement. */
830 for (i
= 0; i
< nlabels
; i
++)
831 gimple_switch_set_label (p
, i
+ 1, args
[i
]);
836 /* Build a GIMPLE_EH_DISPATCH statement. */
839 gimple_build_eh_dispatch (int region
)
842 = as_a
<geh_dispatch
*> (
843 gimple_build_with_ops (GIMPLE_EH_DISPATCH
, ERROR_MARK
, 0));
848 /* Build a new GIMPLE_DEBUG_BIND statement.
850 VAR is bound to VALUE; block and location are taken from STMT. */
853 gimple_build_debug_bind (tree var
, tree value
, gimple
*stmt MEM_STAT_DECL
)
856 = as_a
<gdebug
*> (gimple_build_with_ops_stat (GIMPLE_DEBUG
,
857 (unsigned)GIMPLE_DEBUG_BIND
, 2
859 gimple_debug_bind_set_var (p
, var
);
860 gimple_debug_bind_set_value (p
, value
);
862 gimple_set_location (p
, gimple_location (stmt
));
868 /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement.
870 VAR is bound to VALUE; block and location are taken from STMT. */
873 gimple_build_debug_source_bind (tree var
, tree value
,
874 gimple
*stmt MEM_STAT_DECL
)
878 gimple_build_with_ops_stat (GIMPLE_DEBUG
,
879 (unsigned)GIMPLE_DEBUG_SOURCE_BIND
, 2
882 gimple_debug_source_bind_set_var (p
, var
);
883 gimple_debug_source_bind_set_value (p
, value
);
885 gimple_set_location (p
, gimple_location (stmt
));
891 /* Build a new GIMPLE_DEBUG_BEGIN_STMT statement in BLOCK at
895 gimple_build_debug_begin_stmt (tree block
, location_t location
900 gimple_build_with_ops_stat (GIMPLE_DEBUG
,
901 (unsigned)GIMPLE_DEBUG_BEGIN_STMT
, 0
904 gimple_set_location (p
, location
);
905 gimple_set_block (p
, block
);
906 cfun
->debug_marker_count
++;
912 /* Build a new GIMPLE_DEBUG_INLINE_ENTRY statement in BLOCK at
913 LOCATION. The BLOCK links to the inlined function. */
916 gimple_build_debug_inline_entry (tree block
, location_t location
921 gimple_build_with_ops_stat (GIMPLE_DEBUG
,
922 (unsigned)GIMPLE_DEBUG_INLINE_ENTRY
, 0
925 gimple_set_location (p
, location
);
926 gimple_set_block (p
, block
);
927 cfun
->debug_marker_count
++;
933 /* Build a GIMPLE_OMP_CRITICAL statement.
935 BODY is the sequence of statements for which only one thread can execute.
936 NAME is optional identifier for this critical block.
937 CLAUSES are clauses for this critical block. */
940 gimple_build_omp_critical (gimple_seq body
, tree name
, tree clauses
)
943 = as_a
<gomp_critical
*> (gimple_alloc (GIMPLE_OMP_CRITICAL
, 0));
944 gimple_omp_critical_set_name (p
, name
);
945 gimple_omp_critical_set_clauses (p
, clauses
);
947 gimple_omp_set_body (p
, body
);
952 /* Build a GIMPLE_OMP_FOR statement.
954 BODY is sequence of statements inside the for loop.
955 KIND is the `for' variant.
956 CLAUSES are any of the construct's clauses.
957 COLLAPSE is the collapse count.
958 PRE_BODY is the sequence of statements that are loop invariant. */
961 gimple_build_omp_for (gimple_seq body
, int kind
, tree clauses
, size_t collapse
,
964 gomp_for
*p
= as_a
<gomp_for
*> (gimple_alloc (GIMPLE_OMP_FOR
, 0));
966 gimple_omp_set_body (p
, body
);
967 gimple_omp_for_set_clauses (p
, clauses
);
968 gimple_omp_for_set_kind (p
, kind
);
969 p
->collapse
= collapse
;
970 p
->iter
= ggc_cleared_vec_alloc
<gimple_omp_for_iter
> (collapse
);
973 gimple_omp_for_set_pre_body (p
, pre_body
);
979 /* Build a GIMPLE_OMP_PARALLEL statement.
981 BODY is sequence of statements which are executed in parallel.
982 CLAUSES are the OMP parallel construct's clauses.
983 CHILD_FN is the function created for the parallel threads to execute.
984 DATA_ARG are the shared data argument(s). */
987 gimple_build_omp_parallel (gimple_seq body
, tree clauses
, tree child_fn
,
991 = as_a
<gomp_parallel
*> (gimple_alloc (GIMPLE_OMP_PARALLEL
, 0));
993 gimple_omp_set_body (p
, body
);
994 gimple_omp_parallel_set_clauses (p
, clauses
);
995 gimple_omp_parallel_set_child_fn (p
, child_fn
);
996 gimple_omp_parallel_set_data_arg (p
, data_arg
);
1002 /* Build a GIMPLE_OMP_TASK statement.
1004 BODY is sequence of statements which are executed by the explicit task.
1005 CLAUSES are the OMP task construct's clauses.
1006 CHILD_FN is the function created for the parallel threads to execute.
1007 DATA_ARG are the shared data argument(s).
1008 COPY_FN is the optional function for firstprivate initialization.
1009 ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */
1012 gimple_build_omp_task (gimple_seq body
, tree clauses
, tree child_fn
,
1013 tree data_arg
, tree copy_fn
, tree arg_size
,
1016 gomp_task
*p
= as_a
<gomp_task
*> (gimple_alloc (GIMPLE_OMP_TASK
, 0));
1018 gimple_omp_set_body (p
, body
);
1019 gimple_omp_task_set_clauses (p
, clauses
);
1020 gimple_omp_task_set_child_fn (p
, child_fn
);
1021 gimple_omp_task_set_data_arg (p
, data_arg
);
1022 gimple_omp_task_set_copy_fn (p
, copy_fn
);
1023 gimple_omp_task_set_arg_size (p
, arg_size
);
1024 gimple_omp_task_set_arg_align (p
, arg_align
);
1030 /* Build a GIMPLE_OMP_SECTION statement for a sections statement.
1032 BODY is the sequence of statements in the section. */
1035 gimple_build_omp_section (gimple_seq body
)
1037 gimple
*p
= gimple_alloc (GIMPLE_OMP_SECTION
, 0);
1039 gimple_omp_set_body (p
, body
);
1045 /* Build a GIMPLE_OMP_STRUCTURED_BLOCK statement.
1047 BODY is the structured block sequence. */
1050 gimple_build_omp_structured_block (gimple_seq body
)
1052 gimple
*p
= gimple_alloc (GIMPLE_OMP_STRUCTURED_BLOCK
, 0);
1054 gimple_omp_set_body (p
, body
);
1060 /* Build a GIMPLE_OMP_MASTER statement.
1062 BODY is the sequence of statements to be executed by just the master. */
1065 gimple_build_omp_master (gimple_seq body
)
1067 gimple
*p
= gimple_alloc (GIMPLE_OMP_MASTER
, 0);
1069 gimple_omp_set_body (p
, body
);
1074 /* Build a GIMPLE_OMP_MASKED statement.
1076 BODY is the sequence of statements to be executed by the selected thread(s). */
1079 gimple_build_omp_masked (gimple_seq body
, tree clauses
)
1081 gimple
*p
= gimple_alloc (GIMPLE_OMP_MASKED
, 0);
1082 gimple_omp_masked_set_clauses (p
, clauses
);
1084 gimple_omp_set_body (p
, body
);
1089 /* Build a GIMPLE_OMP_TASKGROUP statement.
1091 BODY is the sequence of statements to be executed by the taskgroup
1093 CLAUSES are any of the construct's clauses. */
1096 gimple_build_omp_taskgroup (gimple_seq body
, tree clauses
)
1098 gimple
*p
= gimple_alloc (GIMPLE_OMP_TASKGROUP
, 0);
1099 gimple_omp_taskgroup_set_clauses (p
, clauses
);
1101 gimple_omp_set_body (p
, body
);
1107 /* Build a GIMPLE_OMP_CONTINUE statement.
1109 CONTROL_DEF is the definition of the control variable.
1110 CONTROL_USE is the use of the control variable. */
1113 gimple_build_omp_continue (tree control_def
, tree control_use
)
1116 = as_a
<gomp_continue
*> (gimple_alloc (GIMPLE_OMP_CONTINUE
, 0));
1117 gimple_omp_continue_set_control_def (p
, control_def
);
1118 gimple_omp_continue_set_control_use (p
, control_use
);
1122 /* Build a GIMPLE_OMP_ORDERED statement.
1124 BODY is the sequence of statements inside a loop that will executed in
1126 CLAUSES are clauses for this statement. */
1129 gimple_build_omp_ordered (gimple_seq body
, tree clauses
)
1132 = as_a
<gomp_ordered
*> (gimple_alloc (GIMPLE_OMP_ORDERED
, 0));
1133 gimple_omp_ordered_set_clauses (p
, clauses
);
1135 gimple_omp_set_body (p
, body
);
1141 /* Build a GIMPLE_OMP_RETURN statement.
1142 WAIT_P is true if this is a non-waiting return. */
1145 gimple_build_omp_return (bool wait_p
)
1147 gimple
*p
= gimple_alloc (GIMPLE_OMP_RETURN
, 0);
1149 gimple_omp_return_set_nowait (p
);
1155 /* Build a GIMPLE_OMP_SCAN statement.
1157 BODY is the sequence of statements to be executed by the scan
1159 CLAUSES are any of the construct's clauses. */
1162 gimple_build_omp_scan (gimple_seq body
, tree clauses
)
1165 = as_a
<gomp_scan
*> (gimple_alloc (GIMPLE_OMP_SCAN
, 0));
1166 gimple_omp_scan_set_clauses (p
, clauses
);
1168 gimple_omp_set_body (p
, body
);
1174 /* Build a GIMPLE_OMP_SECTIONS statement.
1176 BODY is a sequence of section statements.
1177 CLAUSES are any of the OMP sections contsruct's clauses: private,
1178 firstprivate, lastprivate, reduction, and nowait. */
1181 gimple_build_omp_sections (gimple_seq body
, tree clauses
)
1184 = as_a
<gomp_sections
*> (gimple_alloc (GIMPLE_OMP_SECTIONS
, 0));
1186 gimple_omp_set_body (p
, body
);
1187 gimple_omp_sections_set_clauses (p
, clauses
);
1193 /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */
1196 gimple_build_omp_sections_switch (void)
1198 return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH
, 0);
1202 /* Build a GIMPLE_OMP_SINGLE statement.
1204 BODY is the sequence of statements that will be executed once.
1205 CLAUSES are any of the OMP single construct's clauses: private, firstprivate,
1206 copyprivate, nowait. */
1209 gimple_build_omp_single (gimple_seq body
, tree clauses
)
1212 = as_a
<gomp_single
*> (gimple_alloc (GIMPLE_OMP_SINGLE
, 0));
1214 gimple_omp_set_body (p
, body
);
1215 gimple_omp_single_set_clauses (p
, clauses
);
1221 /* Build a GIMPLE_OMP_SCOPE statement.
1223 BODY is the sequence of statements that will be executed once.
1224 CLAUSES are any of the OMP scope construct's clauses: private, reduction,
1228 gimple_build_omp_scope (gimple_seq body
, tree clauses
)
1230 gimple
*p
= gimple_alloc (GIMPLE_OMP_SCOPE
, 0);
1231 gimple_omp_scope_set_clauses (p
, clauses
);
1233 gimple_omp_set_body (p
, body
);
1239 /* Build a GIMPLE_OMP_TARGET statement.
1241 BODY is the sequence of statements that will be executed.
1242 KIND is the kind of the region.
1243 CLAUSES are any of the construct's clauses. */
1246 gimple_build_omp_target (gimple_seq body
, int kind
, tree clauses
)
1249 = as_a
<gomp_target
*> (gimple_alloc (GIMPLE_OMP_TARGET
, 0));
1251 gimple_omp_set_body (p
, body
);
1252 gimple_omp_target_set_clauses (p
, clauses
);
1253 gimple_omp_target_set_kind (p
, kind
);
1259 /* Build a GIMPLE_OMP_TEAMS statement.
1261 BODY is the sequence of statements that will be executed.
1262 CLAUSES are any of the OMP teams construct's clauses. */
1265 gimple_build_omp_teams (gimple_seq body
, tree clauses
)
1267 gomp_teams
*p
= as_a
<gomp_teams
*> (gimple_alloc (GIMPLE_OMP_TEAMS
, 0));
1269 gimple_omp_set_body (p
, body
);
1270 gimple_omp_teams_set_clauses (p
, clauses
);
1276 /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */
1279 gimple_build_omp_atomic_load (tree lhs
, tree rhs
, enum omp_memory_order mo
)
1282 = as_a
<gomp_atomic_load
*> (gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD
, 0));
1283 gimple_omp_atomic_load_set_lhs (p
, lhs
);
1284 gimple_omp_atomic_load_set_rhs (p
, rhs
);
1285 gimple_omp_atomic_set_memory_order (p
, mo
);
1289 /* Build a GIMPLE_OMP_ATOMIC_STORE statement.
1291 VAL is the value we are storing. */
1294 gimple_build_omp_atomic_store (tree val
, enum omp_memory_order mo
)
1296 gomp_atomic_store
*p
1297 = as_a
<gomp_atomic_store
*> (gimple_alloc (GIMPLE_OMP_ATOMIC_STORE
, 0));
1298 gimple_omp_atomic_store_set_val (p
, val
);
1299 gimple_omp_atomic_set_memory_order (p
, mo
);
1303 /* Build a GIMPLE_ASSUME statement. */
1306 gimple_build_assume (tree guard
, gimple_seq body
)
1308 gimple_statement_assume
*p
1309 = as_a
<gimple_statement_assume
*> (gimple_alloc (GIMPLE_ASSUME
, 0));
1310 gimple_assume_set_guard (p
, guard
);
1311 *gimple_assume_body_ptr (p
) = body
;
1315 /* Build a GIMPLE_TRANSACTION statement. */
1318 gimple_build_transaction (gimple_seq body
)
1321 = as_a
<gtransaction
*> (gimple_alloc (GIMPLE_TRANSACTION
, 0));
1322 gimple_transaction_set_body (p
, body
);
1323 gimple_transaction_set_label_norm (p
, 0);
1324 gimple_transaction_set_label_uninst (p
, 0);
1325 gimple_transaction_set_label_over (p
, 0);
1329 #if defined ENABLE_GIMPLE_CHECKING
1330 /* Complain of a gimple type mismatch and die. */
1333 gimple_check_failed (const gimple
*gs
, const char *file
, int line
,
1334 const char *function
, enum gimple_code code
,
1335 enum tree_code subcode
)
1337 internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d",
1338 gimple_code_name
[code
],
1339 get_tree_code_name (subcode
),
1340 gimple_code_name
[gimple_code (gs
)],
1342 ? get_tree_code_name ((enum tree_code
) gs
->subcode
)
1344 function
, trim_filename (file
), line
);
1346 #endif /* ENABLE_GIMPLE_CHECKING */
1349 /* Link gimple statement GS to the end of the sequence *SEQ_P. If
1350 *SEQ_P is NULL, a new sequence is allocated. */
1353 gimple_seq_add_stmt (gimple_seq
*seq_p
, gimple
*gs
)
1355 gimple_stmt_iterator si
;
1359 si
= gsi_last (*seq_p
);
1360 gsi_insert_after (&si
, gs
, GSI_NEW_STMT
);
1363 /* Link gimple statement GS to the end of the sequence *SEQ_P. If
1364 *SEQ_P is NULL, a new sequence is allocated. This function is
1365 similar to gimple_seq_add_stmt, but does not scan the operands.
1366 During gimplification, we need to manipulate statement sequences
1367 before the def/use vectors have been constructed. */
1370 gimple_seq_add_stmt_without_update (gimple_seq
*seq_p
, gimple
*gs
)
1372 gimple_stmt_iterator si
;
1377 si
= gsi_last (*seq_p
);
1378 gsi_insert_after_without_update (&si
, gs
, GSI_NEW_STMT
);
1381 /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is
1382 NULL, a new sequence is allocated. */
1385 gimple_seq_add_seq (gimple_seq
*dst_p
, gimple_seq src
)
1387 gimple_stmt_iterator si
;
1391 si
= gsi_last (*dst_p
);
1392 gsi_insert_seq_after (&si
, src
, GSI_NEW_STMT
);
1395 /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is
1396 NULL, a new sequence is allocated. This function is
1397 similar to gimple_seq_add_seq, but does not scan the operands. */
1400 gimple_seq_add_seq_without_update (gimple_seq
*dst_p
, gimple_seq src
)
1402 gimple_stmt_iterator si
;
1406 si
= gsi_last (*dst_p
);
1407 gsi_insert_seq_after_without_update (&si
, src
, GSI_NEW_STMT
);
1410 /* Determine whether to assign a location to the statement GS. */
1413 should_carry_location_p (gimple
*gs
)
1415 /* Don't emit a line note for a label. We particularly don't want to
1416 emit one for the break label, since it doesn't actually correspond
1417 to the beginning of the loop/switch. */
1418 if (gimple_code (gs
) == GIMPLE_LABEL
)
1424 /* Set the location for gimple statement GS to LOCATION. */
1427 annotate_one_with_location (gimple
*gs
, location_t location
)
1429 if (!gimple_has_location (gs
)
1430 && !gimple_do_not_emit_location_p (gs
)
1431 && should_carry_location_p (gs
))
1432 gimple_set_location (gs
, location
);
1435 /* Set LOCATION for all the statements after iterator GSI in sequence
1436 SEQ. If GSI is pointing to the end of the sequence, start with the
1437 first statement in SEQ. */
1440 annotate_all_with_location_after (gimple_seq seq
, gimple_stmt_iterator gsi
,
1441 location_t location
)
1443 if (gsi_end_p (gsi
))
1444 gsi
= gsi_start (seq
);
1448 for (; !gsi_end_p (gsi
); gsi_next (&gsi
))
1449 annotate_one_with_location (gsi_stmt (gsi
), location
);
1452 /* Set the location for all the statements in a sequence STMT_P to LOCATION. */
1455 annotate_all_with_location (gimple_seq stmt_p
, location_t location
)
1457 gimple_stmt_iterator i
;
1459 if (gimple_seq_empty_p (stmt_p
))
1462 for (i
= gsi_start (stmt_p
); !gsi_end_p (i
); gsi_next (&i
))
1464 gimple
*gs
= gsi_stmt (i
);
1465 annotate_one_with_location (gs
, location
);
1469 /* Helper function of empty_body_p. Return true if STMT is an empty
1473 empty_stmt_p (gimple
*stmt
)
1475 if (gimple_code (stmt
) == GIMPLE_NOP
)
1477 if (gbind
*bind_stmt
= dyn_cast
<gbind
*> (stmt
))
1478 return empty_body_p (gimple_bind_body (bind_stmt
));
1483 /* Return true if BODY contains nothing but empty statements. */
1486 empty_body_p (gimple_seq body
)
1488 gimple_stmt_iterator i
;
1490 if (gimple_seq_empty_p (body
))
1492 for (i
= gsi_start (body
); !gsi_end_p (i
); gsi_next (&i
))
1493 if (!empty_stmt_p (gsi_stmt (i
))
1494 && !is_gimple_debug (gsi_stmt (i
)))
1501 /* Perform a deep copy of sequence SRC and return the result. */
1504 gimple_seq_copy (gimple_seq src
)
1506 gimple_stmt_iterator gsi
;
1507 gimple_seq new_seq
= NULL
;
1510 for (gsi
= gsi_start (src
); !gsi_end_p (gsi
); gsi_next (&gsi
))
1512 stmt
= gimple_copy (gsi_stmt (gsi
));
1513 gimple_seq_add_stmt (&new_seq
, stmt
);
1521 /* Return true if calls C1 and C2 are known to go to the same function. */
1524 gimple_call_same_target_p (const gimple
*c1
, const gimple
*c2
)
1526 if (gimple_call_internal_p (c1
))
1527 return (gimple_call_internal_p (c2
)
1528 && gimple_call_internal_fn (c1
) == gimple_call_internal_fn (c2
)
1529 && (!gimple_call_internal_unique_p (as_a
<const gcall
*> (c1
))
1532 return (gimple_call_fn (c1
) == gimple_call_fn (c2
)
1533 || (gimple_call_fndecl (c1
)
1534 && gimple_call_fndecl (c1
) == gimple_call_fndecl (c2
)));
1537 /* Detect flags from a GIMPLE_CALL. This is just like
1538 call_expr_flags, but for gimple tuples. */
1541 gimple_call_flags (const gimple
*stmt
)
1545 if (gimple_call_internal_p (stmt
))
1546 flags
= internal_fn_flags (gimple_call_internal_fn (stmt
));
1549 tree decl
= gimple_call_fndecl (stmt
);
1551 flags
= flags_from_decl_or_type (decl
);
1552 flags
|= flags_from_decl_or_type (gimple_call_fntype (stmt
));
1555 if (stmt
->subcode
& GF_CALL_NOTHROW
)
1556 flags
|= ECF_NOTHROW
;
1557 if (stmt
->subcode
& GF_CALL_XTHROW
)
1558 flags
|= ECF_XTHROW
;
1560 if (stmt
->subcode
& GF_CALL_BY_DESCRIPTOR
)
1561 flags
|= ECF_BY_DESCRIPTOR
;
1566 /* Return the "fn spec" string for call STMT. */
1569 gimple_call_fnspec (const gcall
*stmt
)
1573 if (gimple_call_internal_p (stmt
))
1575 const_tree spec
= internal_fn_fnspec (gimple_call_internal_fn (stmt
));
1582 type
= gimple_call_fntype (stmt
);
1585 attr
= lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type
));
1587 return TREE_VALUE (TREE_VALUE (attr
));
1589 if (gimple_call_builtin_p (stmt
, BUILT_IN_NORMAL
))
1590 return builtin_fnspec (gimple_call_fndecl (stmt
));
1591 tree fndecl
= gimple_call_fndecl (stmt
);
1592 /* If the call is to a replaceable operator delete and results
1593 from a delete expression as opposed to a direct call to
1594 such operator, then we can treat it as free. */
1596 && DECL_IS_OPERATOR_DELETE_P (fndecl
)
1597 && DECL_IS_REPLACEABLE_OPERATOR (fndecl
)
1598 && gimple_call_from_new_or_delete (stmt
))
1600 /* Similarly operator new can be treated as malloc. */
1602 && DECL_IS_REPLACEABLE_OPERATOR_NEW_P (fndecl
)
1603 && gimple_call_from_new_or_delete (stmt
))
1608 /* Detects argument flags for argument number ARG on call STMT. */
1611 gimple_call_arg_flags (const gcall
*stmt
, unsigned arg
)
1613 attr_fnspec fnspec
= gimple_call_fnspec (stmt
);
1616 if (fnspec
.known_p ())
1617 flags
= fnspec
.arg_eaf_flags (arg
);
1618 tree callee
= gimple_call_fndecl (stmt
);
1621 cgraph_node
*node
= cgraph_node::get (callee
);
1622 modref_summary
*summary
= node
? get_modref_function_summary (node
)
1625 if (summary
&& summary
->arg_flags
.length () > arg
)
1627 int modref_flags
= summary
->arg_flags
[arg
];
1629 /* We have possibly optimized out load. Be conservative here. */
1630 if (!node
->binds_to_current_def_p ())
1631 modref_flags
= interposable_eaf_flags (modref_flags
, flags
);
1632 if (dbg_cnt (ipa_mod_ref_pta
))
1633 flags
|= modref_flags
;
1639 /* Detects argument flags for return slot on call STMT. */
1642 gimple_call_retslot_flags (const gcall
*stmt
)
1644 int flags
= implicit_retslot_eaf_flags
;
1646 tree callee
= gimple_call_fndecl (stmt
);
1649 cgraph_node
*node
= cgraph_node::get (callee
);
1650 modref_summary
*summary
= node
? get_modref_function_summary (node
)
1655 int modref_flags
= summary
->retslot_flags
;
1657 /* We have possibly optimized out load. Be conservative here. */
1658 if (!node
->binds_to_current_def_p ())
1659 modref_flags
= interposable_eaf_flags (modref_flags
, flags
);
1660 if (dbg_cnt (ipa_mod_ref_pta
))
1661 flags
|= modref_flags
;
1667 /* Detects argument flags for static chain on call STMT. */
1670 gimple_call_static_chain_flags (const gcall
*stmt
)
1674 tree callee
= gimple_call_fndecl (stmt
);
1677 cgraph_node
*node
= cgraph_node::get (callee
);
1678 modref_summary
*summary
= node
? get_modref_function_summary (node
)
1681 /* Nested functions should always bind to current def since
1682 there is no public ABI for them. */
1683 gcc_checking_assert (node
->binds_to_current_def_p ());
1686 int modref_flags
= summary
->static_chain_flags
;
1688 if (dbg_cnt (ipa_mod_ref_pta
))
1689 flags
|= modref_flags
;
1695 /* Detects return flags for the call STMT. */
1698 gimple_call_return_flags (const gcall
*stmt
)
1700 if (gimple_call_flags (stmt
) & ECF_MALLOC
)
1703 attr_fnspec fnspec
= gimple_call_fnspec (stmt
);
1705 unsigned int arg_no
;
1706 if (fnspec
.returns_arg (&arg_no
))
1707 return ERF_RETURNS_ARG
| arg_no
;
1709 if (fnspec
.returns_noalias_p ())
1715 /* Return true if call STMT is known to return a non-zero result. */
1718 gimple_call_nonnull_result_p (gcall
*call
)
1720 tree fndecl
= gimple_call_fndecl (call
);
1723 if (flag_delete_null_pointer_checks
&& !flag_check_new
1724 && DECL_IS_OPERATOR_NEW_P (fndecl
)
1725 && !TREE_NOTHROW (fndecl
))
1728 /* References are always non-NULL. */
1729 if (flag_delete_null_pointer_checks
1730 && TREE_CODE (TREE_TYPE (fndecl
)) == REFERENCE_TYPE
)
1733 if (flag_delete_null_pointer_checks
1734 && lookup_attribute ("returns_nonnull",
1735 TYPE_ATTRIBUTES (gimple_call_fntype (call
))))
1737 return gimple_alloca_call_p (call
);
1741 /* If CALL returns a non-null result in an argument, return that arg. */
1744 gimple_call_nonnull_arg (gcall
*call
)
1746 tree fndecl
= gimple_call_fndecl (call
);
1750 unsigned rf
= gimple_call_return_flags (call
);
1751 if (rf
& ERF_RETURNS_ARG
)
1753 unsigned argnum
= rf
& ERF_RETURN_ARG_MASK
;
1754 if (argnum
< gimple_call_num_args (call
))
1756 tree arg
= gimple_call_arg (call
, argnum
);
1758 && infer_nonnull_range_by_attribute (call
, arg
))
1766 /* Return true if GS is a copy assignment. */
1769 gimple_assign_copy_p (gimple
*gs
)
1771 return (gimple_assign_single_p (gs
)
1772 && is_gimple_val (gimple_op (gs
, 1)));
1776 /* Return true if GS is a SSA_NAME copy assignment. */
1779 gimple_assign_ssa_name_copy_p (gimple
*gs
)
1781 return (gimple_assign_single_p (gs
)
1782 && TREE_CODE (gimple_assign_lhs (gs
)) == SSA_NAME
1783 && TREE_CODE (gimple_assign_rhs1 (gs
)) == SSA_NAME
);
1787 /* Return true if GS is an assignment with a unary RHS, but the
1788 operator has no effect on the assigned value. The logic is adapted
1789 from STRIP_NOPS. This predicate is intended to be used in tuplifying
1790 instances in which STRIP_NOPS was previously applied to the RHS of
1793 NOTE: In the use cases that led to the creation of this function
1794 and of gimple_assign_single_p, it is typical to test for either
1795 condition and to proceed in the same manner. In each case, the
1796 assigned value is represented by the single RHS operand of the
1797 assignment. I suspect there may be cases where gimple_assign_copy_p,
1798 gimple_assign_single_p, or equivalent logic is used where a similar
1799 treatment of unary NOPs is appropriate. */
1802 gimple_assign_unary_nop_p (gimple
*gs
)
1804 return (is_gimple_assign (gs
)
1805 && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs
))
1806 || gimple_assign_rhs_code (gs
) == NON_LVALUE_EXPR
)
1807 && gimple_assign_rhs1 (gs
) != error_mark_node
1808 && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs
)))
1809 == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs
)))));
1812 /* Return true if GS is an assignment that loads from its rhs1. */
1815 gimple_assign_load_p (const gimple
*gs
)
1818 if (!gimple_assign_single_p (gs
))
1820 rhs
= gimple_assign_rhs1 (gs
);
1821 if (TREE_CODE (rhs
) == WITH_SIZE_EXPR
)
1823 if (handled_component_p (rhs
))
1824 rhs
= TREE_OPERAND (rhs
, 0);
1825 return (handled_component_p (rhs
)
1827 || TREE_CODE (rhs
) == MEM_REF
1828 || TREE_CODE (rhs
) == TARGET_MEM_REF
);
1832 /* Set BB to be the basic block holding G. */
1835 gimple_set_bb (gimple
*stmt
, basic_block bb
)
1839 if (gimple_code (stmt
) != GIMPLE_LABEL
)
1842 /* If the statement is a label, add the label to block-to-labels map
1843 so that we can speed up edge creation for GIMPLE_GOTOs. */
1849 t
= gimple_label_label (as_a
<glabel
*> (stmt
));
1850 uid
= LABEL_DECL_UID (t
);
1854 vec_safe_length (label_to_block_map_for_fn (cfun
));
1855 LABEL_DECL_UID (t
) = uid
= cfun
->cfg
->last_label_uid
++;
1856 if (old_len
<= (unsigned) uid
)
1857 vec_safe_grow_cleared (label_to_block_map_for_fn (cfun
), uid
+ 1);
1860 (*label_to_block_map_for_fn (cfun
))[uid
] = bb
;
1865 /* Modify the RHS of the assignment pointed-to by GSI using the
1866 operands in the expression tree EXPR.
1868 NOTE: The statement pointed-to by GSI may be reallocated if it
1869 did not have enough operand slots.
1871 This function is useful to convert an existing tree expression into
1872 the flat representation used for the RHS of a GIMPLE assignment.
1873 It will reallocate memory as needed to expand or shrink the number
1874 of operand slots needed to represent EXPR.
1876 NOTE: If you find yourself building a tree and then calling this
1877 function, you are most certainly doing it the slow way. It is much
1878 better to build a new assignment or to use the function
1879 gimple_assign_set_rhs_with_ops, which does not require an
1880 expression tree to be built. */
1883 gimple_assign_set_rhs_from_tree (gimple_stmt_iterator
*gsi
, tree expr
)
1885 enum tree_code subcode
;
1888 extract_ops_from_tree (expr
, &subcode
, &op1
, &op2
, &op3
);
1889 gimple_assign_set_rhs_with_ops (gsi
, subcode
, op1
, op2
, op3
);
1893 /* Set the RHS of assignment statement pointed-to by GSI to CODE with
1894 operands OP1, OP2 and OP3.
1896 NOTE: The statement pointed-to by GSI may be reallocated if it
1897 did not have enough operand slots. */
1900 gimple_assign_set_rhs_with_ops (gimple_stmt_iterator
*gsi
, enum tree_code code
,
1901 tree op1
, tree op2
, tree op3
)
1903 unsigned new_rhs_ops
= get_gimple_rhs_num_ops (code
);
1904 gimple
*stmt
= gsi_stmt (*gsi
);
1905 gimple
*old_stmt
= stmt
;
1907 /* If the new CODE needs more operands, allocate a new statement. */
1908 if (gimple_num_ops (stmt
) < new_rhs_ops
+ 1)
1910 tree lhs
= gimple_assign_lhs (old_stmt
);
1911 stmt
= gimple_alloc (gimple_code (old_stmt
), new_rhs_ops
+ 1);
1912 memcpy (stmt
, old_stmt
, gimple_size (gimple_code (old_stmt
)));
1913 gimple_init_singleton (stmt
);
1915 /* The LHS needs to be reset as this also changes the SSA name
1917 gimple_assign_set_lhs (stmt
, lhs
);
1920 gimple_set_num_ops (stmt
, new_rhs_ops
+ 1);
1921 gimple_set_subcode (stmt
, code
);
1922 gimple_assign_set_rhs1 (stmt
, op1
);
1923 if (new_rhs_ops
> 1)
1924 gimple_assign_set_rhs2 (stmt
, op2
);
1925 if (new_rhs_ops
> 2)
1926 gimple_assign_set_rhs3 (stmt
, op3
);
1927 if (stmt
!= old_stmt
)
1928 gsi_replace (gsi
, stmt
, false);
1932 /* Return the LHS of a statement that performs an assignment,
1933 either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE
1934 for a call to a function that returns no value, or for a
1935 statement other than an assignment or a call. */
1938 gimple_get_lhs (const gimple
*stmt
)
1940 enum gimple_code code
= gimple_code (stmt
);
1942 if (code
== GIMPLE_ASSIGN
)
1943 return gimple_assign_lhs (stmt
);
1944 else if (code
== GIMPLE_CALL
)
1945 return gimple_call_lhs (stmt
);
1946 else if (code
== GIMPLE_PHI
)
1947 return gimple_phi_result (stmt
);
1953 /* Set the LHS of a statement that performs an assignment,
1954 either a GIMPLE_ASSIGN or a GIMPLE_CALL. */
1957 gimple_set_lhs (gimple
*stmt
, tree lhs
)
1959 enum gimple_code code
= gimple_code (stmt
);
1961 if (code
== GIMPLE_ASSIGN
)
1962 gimple_assign_set_lhs (stmt
, lhs
);
1963 else if (code
== GIMPLE_CALL
)
1964 gimple_call_set_lhs (stmt
, lhs
);
1970 /* Return a deep copy of statement STMT. All the operands from STMT
1971 are reallocated and copied using unshare_expr. The DEF, USE, VDEF
1972 and VUSE operand arrays are set to empty in the new copy. The new
1973 copy isn't part of any sequence. */
1976 gimple_copy (gimple
*stmt
)
1978 enum gimple_code code
= gimple_code (stmt
);
1979 unsigned num_ops
= gimple_num_ops (stmt
);
1980 gimple
*copy
= gimple_alloc (code
, num_ops
);
1983 /* Shallow copy all the fields from STMT. */
1984 memcpy (copy
, stmt
, gimple_size (code
));
1985 gimple_init_singleton (copy
);
1987 /* If STMT has sub-statements, deep-copy them as well. */
1988 if (gimple_has_substatements (stmt
))
1993 switch (gimple_code (stmt
))
1997 gbind
*bind_stmt
= as_a
<gbind
*> (stmt
);
1998 gbind
*bind_copy
= as_a
<gbind
*> (copy
);
1999 new_seq
= gimple_seq_copy (gimple_bind_body (bind_stmt
));
2000 gimple_bind_set_body (bind_copy
, new_seq
);
2001 gimple_bind_set_vars (bind_copy
,
2002 unshare_expr (gimple_bind_vars (bind_stmt
)));
2003 gimple_bind_set_block (bind_copy
, gimple_bind_block (bind_stmt
));
2009 gcatch
*catch_stmt
= as_a
<gcatch
*> (stmt
);
2010 gcatch
*catch_copy
= as_a
<gcatch
*> (copy
);
2011 new_seq
= gimple_seq_copy (gimple_catch_handler (catch_stmt
));
2012 gimple_catch_set_handler (catch_copy
, new_seq
);
2013 t
= unshare_expr (gimple_catch_types (catch_stmt
));
2014 gimple_catch_set_types (catch_copy
, t
);
2018 case GIMPLE_EH_FILTER
:
2020 geh_filter
*eh_filter_stmt
= as_a
<geh_filter
*> (stmt
);
2021 geh_filter
*eh_filter_copy
= as_a
<geh_filter
*> (copy
);
2023 = gimple_seq_copy (gimple_eh_filter_failure (eh_filter_stmt
));
2024 gimple_eh_filter_set_failure (eh_filter_copy
, new_seq
);
2025 t
= unshare_expr (gimple_eh_filter_types (eh_filter_stmt
));
2026 gimple_eh_filter_set_types (eh_filter_copy
, t
);
2030 case GIMPLE_EH_ELSE
:
2032 geh_else
*eh_else_stmt
= as_a
<geh_else
*> (stmt
);
2033 geh_else
*eh_else_copy
= as_a
<geh_else
*> (copy
);
2034 new_seq
= gimple_seq_copy (gimple_eh_else_n_body (eh_else_stmt
));
2035 gimple_eh_else_set_n_body (eh_else_copy
, new_seq
);
2036 new_seq
= gimple_seq_copy (gimple_eh_else_e_body (eh_else_stmt
));
2037 gimple_eh_else_set_e_body (eh_else_copy
, new_seq
);
2043 gtry
*try_stmt
= as_a
<gtry
*> (stmt
);
2044 gtry
*try_copy
= as_a
<gtry
*> (copy
);
2045 new_seq
= gimple_seq_copy (gimple_try_eval (try_stmt
));
2046 gimple_try_set_eval (try_copy
, new_seq
);
2047 new_seq
= gimple_seq_copy (gimple_try_cleanup (try_stmt
));
2048 gimple_try_set_cleanup (try_copy
, new_seq
);
2052 case GIMPLE_OMP_FOR
:
2053 new_seq
= gimple_seq_copy (gimple_omp_for_pre_body (stmt
));
2054 gimple_omp_for_set_pre_body (copy
, new_seq
);
2055 t
= unshare_expr (gimple_omp_for_clauses (stmt
));
2056 gimple_omp_for_set_clauses (copy
, t
);
2058 gomp_for
*omp_for_copy
= as_a
<gomp_for
*> (copy
);
2059 omp_for_copy
->iter
= ggc_vec_alloc
<gimple_omp_for_iter
>
2060 ( gimple_omp_for_collapse (stmt
));
2062 for (i
= 0; i
< gimple_omp_for_collapse (stmt
); i
++)
2064 gimple_omp_for_set_cond (copy
, i
,
2065 gimple_omp_for_cond (stmt
, i
));
2066 gimple_omp_for_set_index (copy
, i
,
2067 gimple_omp_for_index (stmt
, i
));
2068 t
= unshare_expr (gimple_omp_for_initial (stmt
, i
));
2069 gimple_omp_for_set_initial (copy
, i
, t
);
2070 t
= unshare_expr (gimple_omp_for_final (stmt
, i
));
2071 gimple_omp_for_set_final (copy
, i
, t
);
2072 t
= unshare_expr (gimple_omp_for_incr (stmt
, i
));
2073 gimple_omp_for_set_incr (copy
, i
, t
);
2077 case GIMPLE_OMP_PARALLEL
:
2079 gomp_parallel
*omp_par_stmt
= as_a
<gomp_parallel
*> (stmt
);
2080 gomp_parallel
*omp_par_copy
= as_a
<gomp_parallel
*> (copy
);
2081 t
= unshare_expr (gimple_omp_parallel_clauses (omp_par_stmt
));
2082 gimple_omp_parallel_set_clauses (omp_par_copy
, t
);
2083 t
= unshare_expr (gimple_omp_parallel_child_fn (omp_par_stmt
));
2084 gimple_omp_parallel_set_child_fn (omp_par_copy
, t
);
2085 t
= unshare_expr (gimple_omp_parallel_data_arg (omp_par_stmt
));
2086 gimple_omp_parallel_set_data_arg (omp_par_copy
, t
);
2090 case GIMPLE_OMP_TASK
:
2091 t
= unshare_expr (gimple_omp_task_clauses (stmt
));
2092 gimple_omp_task_set_clauses (copy
, t
);
2093 t
= unshare_expr (gimple_omp_task_child_fn (stmt
));
2094 gimple_omp_task_set_child_fn (copy
, t
);
2095 t
= unshare_expr (gimple_omp_task_data_arg (stmt
));
2096 gimple_omp_task_set_data_arg (copy
, t
);
2097 t
= unshare_expr (gimple_omp_task_copy_fn (stmt
));
2098 gimple_omp_task_set_copy_fn (copy
, t
);
2099 t
= unshare_expr (gimple_omp_task_arg_size (stmt
));
2100 gimple_omp_task_set_arg_size (copy
, t
);
2101 t
= unshare_expr (gimple_omp_task_arg_align (stmt
));
2102 gimple_omp_task_set_arg_align (copy
, t
);
2105 case GIMPLE_OMP_CRITICAL
:
2106 t
= unshare_expr (gimple_omp_critical_name
2107 (as_a
<gomp_critical
*> (stmt
)));
2108 gimple_omp_critical_set_name (as_a
<gomp_critical
*> (copy
), t
);
2109 t
= unshare_expr (gimple_omp_critical_clauses
2110 (as_a
<gomp_critical
*> (stmt
)));
2111 gimple_omp_critical_set_clauses (as_a
<gomp_critical
*> (copy
), t
);
2114 case GIMPLE_OMP_ORDERED
:
2115 t
= unshare_expr (gimple_omp_ordered_clauses
2116 (as_a
<gomp_ordered
*> (stmt
)));
2117 gimple_omp_ordered_set_clauses (as_a
<gomp_ordered
*> (copy
), t
);
2120 case GIMPLE_OMP_SCAN
:
2121 t
= gimple_omp_scan_clauses (as_a
<gomp_scan
*> (stmt
));
2122 t
= unshare_expr (t
);
2123 gimple_omp_scan_set_clauses (as_a
<gomp_scan
*> (copy
), t
);
2126 case GIMPLE_OMP_TASKGROUP
:
2127 t
= unshare_expr (gimple_omp_taskgroup_clauses (stmt
));
2128 gimple_omp_taskgroup_set_clauses (copy
, t
);
2131 case GIMPLE_OMP_SECTIONS
:
2132 t
= unshare_expr (gimple_omp_sections_clauses (stmt
));
2133 gimple_omp_sections_set_clauses (copy
, t
);
2134 t
= unshare_expr (gimple_omp_sections_control (stmt
));
2135 gimple_omp_sections_set_control (copy
, t
);
2138 case GIMPLE_OMP_SINGLE
:
2140 gomp_single
*omp_single_copy
= as_a
<gomp_single
*> (copy
);
2141 t
= unshare_expr (gimple_omp_single_clauses (stmt
));
2142 gimple_omp_single_set_clauses (omp_single_copy
, t
);
2146 case GIMPLE_OMP_SCOPE
:
2147 t
= unshare_expr (gimple_omp_scope_clauses (stmt
));
2148 gimple_omp_scope_set_clauses (copy
, t
);
2151 case GIMPLE_OMP_TARGET
:
2153 gomp_target
*omp_target_stmt
= as_a
<gomp_target
*> (stmt
);
2154 gomp_target
*omp_target_copy
= as_a
<gomp_target
*> (copy
);
2155 t
= unshare_expr (gimple_omp_target_clauses (omp_target_stmt
));
2156 gimple_omp_target_set_clauses (omp_target_copy
, t
);
2157 t
= unshare_expr (gimple_omp_target_data_arg (omp_target_stmt
));
2158 gimple_omp_target_set_data_arg (omp_target_copy
, t
);
2162 case GIMPLE_OMP_TEAMS
:
2164 gomp_teams
*omp_teams_copy
= as_a
<gomp_teams
*> (copy
);
2165 t
= unshare_expr (gimple_omp_teams_clauses (stmt
));
2166 gimple_omp_teams_set_clauses (omp_teams_copy
, t
);
2170 case GIMPLE_OMP_SECTION
:
2171 case GIMPLE_OMP_MASTER
:
2172 case GIMPLE_OMP_STRUCTURED_BLOCK
:
2174 new_seq
= gimple_seq_copy (gimple_omp_body (stmt
));
2175 gimple_omp_set_body (copy
, new_seq
);
2178 case GIMPLE_OMP_MASKED
:
2179 t
= unshare_expr (gimple_omp_masked_clauses (stmt
));
2180 gimple_omp_masked_set_clauses (copy
, t
);
2184 new_seq
= gimple_seq_copy (gimple_assume_body (stmt
));
2185 *gimple_assume_body_ptr (copy
) = new_seq
;
2186 gimple_assume_set_guard (copy
,
2187 unshare_expr (gimple_assume_guard (stmt
)));
2190 case GIMPLE_TRANSACTION
:
2191 new_seq
= gimple_seq_copy (gimple_transaction_body (
2192 as_a
<gtransaction
*> (stmt
)));
2193 gimple_transaction_set_body (as_a
<gtransaction
*> (copy
),
2197 case GIMPLE_WITH_CLEANUP_EXPR
:
2198 new_seq
= gimple_seq_copy (gimple_wce_cleanup (stmt
));
2199 gimple_wce_set_cleanup (copy
, new_seq
);
2207 /* Make copy of operands. */
2208 for (i
= 0; i
< num_ops
; i
++)
2209 gimple_set_op (copy
, i
, unshare_expr (gimple_op (stmt
, i
)));
2211 if (gimple_has_mem_ops (stmt
))
2213 gimple_set_vdef (copy
, gimple_vdef (stmt
));
2214 gimple_set_vuse (copy
, gimple_vuse (stmt
));
2217 /* Clear out SSA operand vectors on COPY. */
2218 if (gimple_has_ops (stmt
))
2220 gimple_set_use_ops (copy
, NULL
);
2222 /* SSA operands need to be updated. */
2223 gimple_set_modified (copy
, true);
2226 if (gimple_debug_nonbind_marker_p (stmt
))
2227 cfun
->debug_marker_count
++;
2232 /* Move OLD_STMT's vuse and vdef operands to NEW_STMT, on the assumption
2233 that OLD_STMT is about to be removed. */
2236 gimple_move_vops (gimple
*new_stmt
, gimple
*old_stmt
)
2238 tree vdef
= gimple_vdef (old_stmt
);
2239 gimple_set_vuse (new_stmt
, gimple_vuse (old_stmt
));
2240 gimple_set_vdef (new_stmt
, vdef
);
2241 if (vdef
&& TREE_CODE (vdef
) == SSA_NAME
)
2242 SSA_NAME_DEF_STMT (vdef
) = new_stmt
;
2245 /* Return true if statement S has side-effects. We consider a
2246 statement to have side effects if:
2248 - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST.
2249 - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */
2252 gimple_has_side_effects (const gimple
*s
)
2254 if (is_gimple_debug (s
))
2257 /* We don't have to scan the arguments to check for
2258 volatile arguments, though, at present, we still
2259 do a scan to check for TREE_SIDE_EFFECTS. */
2260 if (gimple_has_volatile_ops (s
))
2263 if (gimple_code (s
) == GIMPLE_ASM
2264 && gimple_asm_volatile_p (as_a
<const gasm
*> (s
)))
2267 if (is_gimple_call (s
))
2269 int flags
= gimple_call_flags (s
);
2271 /* An infinite loop is considered a side effect. */
2272 if (!(flags
& (ECF_CONST
| ECF_PURE
))
2273 || (flags
& ECF_LOOPING_CONST_OR_PURE
))
2282 /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p.
2283 Return true if S can trap. When INCLUDE_MEM is true, check whether
2284 the memory operations could trap. When INCLUDE_STORES is true and
2285 S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */
2288 gimple_could_trap_p_1 (const gimple
*s
, bool include_mem
, bool include_stores
)
2290 tree t
, div
= NULL_TREE
;
2295 unsigned i
, start
= (is_gimple_assign (s
) && !include_stores
) ? 1 : 0;
2297 for (i
= start
; i
< gimple_num_ops (s
); i
++)
2298 if (tree_could_trap_p (gimple_op (s
, i
)))
2302 switch (gimple_code (s
))
2305 return gimple_asm_volatile_p (as_a
<const gasm
*> (s
));
2308 if (gimple_call_internal_p (s
))
2310 t
= gimple_call_fndecl (s
);
2311 /* Assume that indirect and calls to weak functions may trap. */
2312 if (!t
|| !DECL_P (t
) || DECL_WEAK (t
))
2317 op
= gimple_assign_rhs_code (s
);
2319 /* For COND_EXPR only the condition may trap. */
2320 if (op
== COND_EXPR
)
2321 return tree_could_trap_p (gimple_assign_rhs1 (s
));
2323 /* For comparisons we need to check rhs operand types instead of lhs type
2324 (which is BOOLEAN_TYPE). */
2325 if (TREE_CODE_CLASS (op
) == tcc_comparison
)
2326 t
= TREE_TYPE (gimple_assign_rhs1 (s
));
2328 t
= TREE_TYPE (gimple_assign_lhs (s
));
2330 if (get_gimple_rhs_class (op
) == GIMPLE_BINARY_RHS
)
2331 div
= gimple_assign_rhs2 (s
);
2333 return (operation_could_trap_p (op
, FLOAT_TYPE_P (t
),
2334 (INTEGRAL_TYPE_P (t
)
2335 && TYPE_OVERFLOW_TRAPS (t
)),
2339 t
= TREE_TYPE (gimple_cond_lhs (s
));
2340 return operation_could_trap_p (gimple_cond_code (s
),
2341 FLOAT_TYPE_P (t
), false, NULL_TREE
);
2350 /* Return true if statement S can trap. */
2353 gimple_could_trap_p (const gimple
*s
)
2355 return gimple_could_trap_p_1 (s
, true, true);
2358 /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */
2361 gimple_assign_rhs_could_trap_p (gimple
*s
)
2363 gcc_assert (is_gimple_assign (s
));
2364 return gimple_could_trap_p_1 (s
, true, false);
2368 /* Print debugging information for gimple stmts generated. */
2371 dump_gimple_statistics (void)
2374 uint64_t total_tuples
= 0, total_bytes
= 0;
2376 if (! GATHER_STATISTICS
)
2378 fprintf (stderr
, "No GIMPLE statistics\n");
2382 fprintf (stderr
, "\nGIMPLE statements\n");
2383 fprintf (stderr
, "Kind Stmts Bytes\n");
2384 fprintf (stderr
, "---------------------------------------\n");
2385 for (i
= 0; i
< (int) gimple_alloc_kind_all
; ++i
)
2387 fprintf (stderr
, "%-20s %7" PRIu64
"%c %10" PRIu64
"%c\n",
2388 gimple_alloc_kind_names
[i
],
2389 SIZE_AMOUNT (gimple_alloc_counts
[i
]),
2390 SIZE_AMOUNT (gimple_alloc_sizes
[i
]));
2391 total_tuples
+= gimple_alloc_counts
[i
];
2392 total_bytes
+= gimple_alloc_sizes
[i
];
2394 fprintf (stderr
, "---------------------------------------\n");
2395 fprintf (stderr
, "%-20s %7" PRIu64
"%c %10" PRIu64
"%c\n", "Total",
2396 SIZE_AMOUNT (total_tuples
), SIZE_AMOUNT (total_bytes
));
2397 fprintf (stderr
, "---------------------------------------\n");
2401 /* Return the number of operands needed on the RHS of a GIMPLE
2402 assignment for an expression with tree code CODE. */
2405 get_gimple_rhs_num_ops (enum tree_code code
)
2407 switch (get_gimple_rhs_class (code
))
2409 case GIMPLE_UNARY_RHS
:
2410 case GIMPLE_SINGLE_RHS
:
2412 case GIMPLE_BINARY_RHS
:
2414 case GIMPLE_TERNARY_RHS
:
2421 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \
2423 ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \
2424 : ((TYPE) == tcc_binary \
2425 || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \
2426 : ((TYPE) == tcc_constant \
2427 || (TYPE) == tcc_declaration \
2428 || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \
2429 : ((SYM) == TRUTH_AND_EXPR \
2430 || (SYM) == TRUTH_OR_EXPR \
2431 || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \
2432 : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \
2433 : ((SYM) == COND_EXPR \
2434 || (SYM) == WIDEN_MULT_PLUS_EXPR \
2435 || (SYM) == WIDEN_MULT_MINUS_EXPR \
2436 || (SYM) == DOT_PROD_EXPR \
2437 || (SYM) == SAD_EXPR \
2438 || (SYM) == REALIGN_LOAD_EXPR \
2439 || (SYM) == VEC_COND_EXPR \
2440 || (SYM) == VEC_PERM_EXPR \
2441 || (SYM) == BIT_INSERT_EXPR) ? GIMPLE_TERNARY_RHS \
2442 : ((SYM) == CONSTRUCTOR \
2443 || (SYM) == OBJ_TYPE_REF \
2444 || (SYM) == ADDR_EXPR \
2445 || (SYM) == WITH_SIZE_EXPR \
2446 || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \
2447 : GIMPLE_INVALID_RHS),
2448 #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS,
2450 const unsigned char gimple_rhs_class_table
[] = {
2451 #include "all-tree.def"
2455 #undef END_OF_BASE_TREE_CODES
2457 /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in
2458 the positions marked by the set ARGS_TO_SKIP. */
2461 gimple_call_copy_skip_args (gcall
*stmt
, bitmap args_to_skip
)
2464 int nargs
= gimple_call_num_args (stmt
);
2465 auto_vec
<tree
> vargs (nargs
);
2468 for (i
= 0; i
< nargs
; i
++)
2469 if (!bitmap_bit_p (args_to_skip
, i
))
2470 vargs
.quick_push (gimple_call_arg (stmt
, i
));
2472 if (gimple_call_internal_p (stmt
))
2473 new_stmt
= gimple_build_call_internal_vec (gimple_call_internal_fn (stmt
),
2476 new_stmt
= gimple_build_call_vec (gimple_call_fn (stmt
), vargs
);
2478 if (gimple_call_lhs (stmt
))
2479 gimple_call_set_lhs (new_stmt
, gimple_call_lhs (stmt
));
2481 gimple_set_vuse (new_stmt
, gimple_vuse (stmt
));
2482 gimple_set_vdef (new_stmt
, gimple_vdef (stmt
));
2484 if (gimple_has_location (stmt
))
2485 gimple_set_location (new_stmt
, gimple_location (stmt
));
2486 gimple_call_copy_flags (new_stmt
, stmt
);
2487 gimple_call_set_chain (new_stmt
, gimple_call_chain (stmt
));
2489 gimple_set_modified (new_stmt
, true);
2496 /* Return true if the field decls F1 and F2 are at the same offset.
2498 This is intended to be used on GIMPLE types only. */
2501 gimple_compare_field_offset (tree f1
, tree f2
)
2503 if (DECL_OFFSET_ALIGN (f1
) == DECL_OFFSET_ALIGN (f2
))
2505 tree offset1
= DECL_FIELD_OFFSET (f1
);
2506 tree offset2
= DECL_FIELD_OFFSET (f2
);
2507 return ((offset1
== offset2
2508 /* Once gimplification is done, self-referential offsets are
2509 instantiated as operand #2 of the COMPONENT_REF built for
2510 each access and reset. Therefore, they are not relevant
2511 anymore and fields are interchangeable provided that they
2512 represent the same access. */
2513 || (TREE_CODE (offset1
) == PLACEHOLDER_EXPR
2514 && TREE_CODE (offset2
) == PLACEHOLDER_EXPR
2515 && (DECL_SIZE (f1
) == DECL_SIZE (f2
)
2516 || (TREE_CODE (DECL_SIZE (f1
)) == PLACEHOLDER_EXPR
2517 && TREE_CODE (DECL_SIZE (f2
)) == PLACEHOLDER_EXPR
)
2518 || operand_equal_p (DECL_SIZE (f1
), DECL_SIZE (f2
), 0))
2519 && DECL_ALIGN (f1
) == DECL_ALIGN (f2
))
2520 || operand_equal_p (offset1
, offset2
, 0))
2521 && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1
),
2522 DECL_FIELD_BIT_OFFSET (f2
)));
2525 /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN
2526 should be, so handle differing ones specially by decomposing
2527 the offset into a byte and bit offset manually. */
2528 if (tree_fits_shwi_p (DECL_FIELD_OFFSET (f1
))
2529 && tree_fits_shwi_p (DECL_FIELD_OFFSET (f2
)))
2531 unsigned HOST_WIDE_INT byte_offset1
, byte_offset2
;
2532 unsigned HOST_WIDE_INT bit_offset1
, bit_offset2
;
2533 bit_offset1
= TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1
));
2534 byte_offset1
= (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1
))
2535 + bit_offset1
/ BITS_PER_UNIT
);
2536 bit_offset2
= TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2
));
2537 byte_offset2
= (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2
))
2538 + bit_offset2
/ BITS_PER_UNIT
);
2539 if (byte_offset1
!= byte_offset2
)
2541 return bit_offset1
% BITS_PER_UNIT
== bit_offset2
% BITS_PER_UNIT
;
2548 /* Return a type the same as TYPE except unsigned or
2549 signed according to UNSIGNEDP. */
2552 gimple_signed_or_unsigned_type (bool unsignedp
, tree type
)
2557 type1
= TYPE_MAIN_VARIANT (type
);
2558 if (type1
== signed_char_type_node
2559 || type1
== char_type_node
2560 || type1
== unsigned_char_type_node
)
2561 return unsignedp
? unsigned_char_type_node
: signed_char_type_node
;
2562 if (type1
== integer_type_node
|| type1
== unsigned_type_node
)
2563 return unsignedp
? unsigned_type_node
: integer_type_node
;
2564 if (type1
== short_integer_type_node
|| type1
== short_unsigned_type_node
)
2565 return unsignedp
? short_unsigned_type_node
: short_integer_type_node
;
2566 if (type1
== long_integer_type_node
|| type1
== long_unsigned_type_node
)
2567 return unsignedp
? long_unsigned_type_node
: long_integer_type_node
;
2568 if (type1
== long_long_integer_type_node
2569 || type1
== long_long_unsigned_type_node
)
2571 ? long_long_unsigned_type_node
2572 : long_long_integer_type_node
;
2574 for (i
= 0; i
< NUM_INT_N_ENTS
; i
++)
2575 if (int_n_enabled_p
[i
]
2576 && (type1
== int_n_trees
[i
].unsigned_type
2577 || type1
== int_n_trees
[i
].signed_type
))
2579 ? int_n_trees
[i
].unsigned_type
2580 : int_n_trees
[i
].signed_type
;
2582 #if HOST_BITS_PER_WIDE_INT >= 64
2583 if (type1
== intTI_type_node
|| type1
== unsigned_intTI_type_node
)
2584 return unsignedp
? unsigned_intTI_type_node
: intTI_type_node
;
2586 if (type1
== intDI_type_node
|| type1
== unsigned_intDI_type_node
)
2587 return unsignedp
? unsigned_intDI_type_node
: intDI_type_node
;
2588 if (type1
== intSI_type_node
|| type1
== unsigned_intSI_type_node
)
2589 return unsignedp
? unsigned_intSI_type_node
: intSI_type_node
;
2590 if (type1
== intHI_type_node
|| type1
== unsigned_intHI_type_node
)
2591 return unsignedp
? unsigned_intHI_type_node
: intHI_type_node
;
2592 if (type1
== intQI_type_node
|| type1
== unsigned_intQI_type_node
)
2593 return unsignedp
? unsigned_intQI_type_node
: intQI_type_node
;
2595 #define GIMPLE_FIXED_TYPES(NAME) \
2596 if (type1 == short_ ## NAME ## _type_node \
2597 || type1 == unsigned_short_ ## NAME ## _type_node) \
2598 return unsignedp ? unsigned_short_ ## NAME ## _type_node \
2599 : short_ ## NAME ## _type_node; \
2600 if (type1 == NAME ## _type_node \
2601 || type1 == unsigned_ ## NAME ## _type_node) \
2602 return unsignedp ? unsigned_ ## NAME ## _type_node \
2603 : NAME ## _type_node; \
2604 if (type1 == long_ ## NAME ## _type_node \
2605 || type1 == unsigned_long_ ## NAME ## _type_node) \
2606 return unsignedp ? unsigned_long_ ## NAME ## _type_node \
2607 : long_ ## NAME ## _type_node; \
2608 if (type1 == long_long_ ## NAME ## _type_node \
2609 || type1 == unsigned_long_long_ ## NAME ## _type_node) \
2610 return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \
2611 : long_long_ ## NAME ## _type_node;
2613 #define GIMPLE_FIXED_MODE_TYPES(NAME) \
2614 if (type1 == NAME ## _type_node \
2615 || type1 == u ## NAME ## _type_node) \
2616 return unsignedp ? u ## NAME ## _type_node \
2617 : NAME ## _type_node;
2619 #define GIMPLE_FIXED_TYPES_SAT(NAME) \
2620 if (type1 == sat_ ## short_ ## NAME ## _type_node \
2621 || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \
2622 return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \
2623 : sat_ ## short_ ## NAME ## _type_node; \
2624 if (type1 == sat_ ## NAME ## _type_node \
2625 || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \
2626 return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \
2627 : sat_ ## NAME ## _type_node; \
2628 if (type1 == sat_ ## long_ ## NAME ## _type_node \
2629 || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \
2630 return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \
2631 : sat_ ## long_ ## NAME ## _type_node; \
2632 if (type1 == sat_ ## long_long_ ## NAME ## _type_node \
2633 || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \
2634 return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \
2635 : sat_ ## long_long_ ## NAME ## _type_node;
2637 #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \
2638 if (type1 == sat_ ## NAME ## _type_node \
2639 || type1 == sat_ ## u ## NAME ## _type_node) \
2640 return unsignedp ? sat_ ## u ## NAME ## _type_node \
2641 : sat_ ## NAME ## _type_node;
2643 GIMPLE_FIXED_TYPES (fract
);
2644 GIMPLE_FIXED_TYPES_SAT (fract
);
2645 GIMPLE_FIXED_TYPES (accum
);
2646 GIMPLE_FIXED_TYPES_SAT (accum
);
2648 GIMPLE_FIXED_MODE_TYPES (qq
);
2649 GIMPLE_FIXED_MODE_TYPES (hq
);
2650 GIMPLE_FIXED_MODE_TYPES (sq
);
2651 GIMPLE_FIXED_MODE_TYPES (dq
);
2652 GIMPLE_FIXED_MODE_TYPES (tq
);
2653 GIMPLE_FIXED_MODE_TYPES_SAT (qq
);
2654 GIMPLE_FIXED_MODE_TYPES_SAT (hq
);
2655 GIMPLE_FIXED_MODE_TYPES_SAT (sq
);
2656 GIMPLE_FIXED_MODE_TYPES_SAT (dq
);
2657 GIMPLE_FIXED_MODE_TYPES_SAT (tq
);
2658 GIMPLE_FIXED_MODE_TYPES (ha
);
2659 GIMPLE_FIXED_MODE_TYPES (sa
);
2660 GIMPLE_FIXED_MODE_TYPES (da
);
2661 GIMPLE_FIXED_MODE_TYPES (ta
);
2662 GIMPLE_FIXED_MODE_TYPES_SAT (ha
);
2663 GIMPLE_FIXED_MODE_TYPES_SAT (sa
);
2664 GIMPLE_FIXED_MODE_TYPES_SAT (da
);
2665 GIMPLE_FIXED_MODE_TYPES_SAT (ta
);
2667 /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not
2668 the precision; they have precision set to match their range, but
2669 may use a wider mode to match an ABI. If we change modes, we may
2670 wind up with bad conversions. For INTEGER_TYPEs in C, must check
2671 the precision as well, so as to yield correct results for
2672 bit-field types. C++ does not have these separate bit-field
2673 types, and producing a signed or unsigned variant of an
2674 ENUMERAL_TYPE may cause other problems as well. */
2675 if (!INTEGRAL_TYPE_P (type
)
2676 || TYPE_UNSIGNED (type
) == unsignedp
)
2679 #define TYPE_OK(node) \
2680 (TYPE_MODE (type) == TYPE_MODE (node) \
2681 && TYPE_PRECISION (type) == TYPE_PRECISION (node))
2682 if (TYPE_OK (signed_char_type_node
))
2683 return unsignedp
? unsigned_char_type_node
: signed_char_type_node
;
2684 if (TYPE_OK (integer_type_node
))
2685 return unsignedp
? unsigned_type_node
: integer_type_node
;
2686 if (TYPE_OK (short_integer_type_node
))
2687 return unsignedp
? short_unsigned_type_node
: short_integer_type_node
;
2688 if (TYPE_OK (long_integer_type_node
))
2689 return unsignedp
? long_unsigned_type_node
: long_integer_type_node
;
2690 if (TYPE_OK (long_long_integer_type_node
))
2692 ? long_long_unsigned_type_node
2693 : long_long_integer_type_node
);
2695 for (i
= 0; i
< NUM_INT_N_ENTS
; i
++)
2696 if (int_n_enabled_p
[i
]
2697 && TYPE_MODE (type
) == int_n_data
[i
].m
2698 && TYPE_PRECISION (type
) == int_n_data
[i
].bitsize
)
2700 ? int_n_trees
[i
].unsigned_type
2701 : int_n_trees
[i
].signed_type
;
2703 #if HOST_BITS_PER_WIDE_INT >= 64
2704 if (TYPE_OK (intTI_type_node
))
2705 return unsignedp
? unsigned_intTI_type_node
: intTI_type_node
;
2707 if (TYPE_OK (intDI_type_node
))
2708 return unsignedp
? unsigned_intDI_type_node
: intDI_type_node
;
2709 if (TYPE_OK (intSI_type_node
))
2710 return unsignedp
? unsigned_intSI_type_node
: intSI_type_node
;
2711 if (TYPE_OK (intHI_type_node
))
2712 return unsignedp
? unsigned_intHI_type_node
: intHI_type_node
;
2713 if (TYPE_OK (intQI_type_node
))
2714 return unsignedp
? unsigned_intQI_type_node
: intQI_type_node
;
2716 #undef GIMPLE_FIXED_TYPES
2717 #undef GIMPLE_FIXED_MODE_TYPES
2718 #undef GIMPLE_FIXED_TYPES_SAT
2719 #undef GIMPLE_FIXED_MODE_TYPES_SAT
2722 return build_nonstandard_integer_type (TYPE_PRECISION (type
), unsignedp
);
2726 /* Return an unsigned type the same as TYPE in other respects. */
2729 gimple_unsigned_type (tree type
)
2731 return gimple_signed_or_unsigned_type (true, type
);
2735 /* Return a signed type the same as TYPE in other respects. */
2738 gimple_signed_type (tree type
)
2740 return gimple_signed_or_unsigned_type (false, type
);
2744 /* Return the typed-based alias set for T, which may be an expression
2745 or a type. Return -1 if we don't do anything special. */
2748 gimple_get_alias_set (tree t
)
2750 /* That's all the expressions we handle specially. */
2754 /* For convenience, follow the C standard when dealing with
2755 character types. Any object may be accessed via an lvalue that
2756 has character type. */
2757 if (t
== char_type_node
2758 || t
== signed_char_type_node
2759 || t
== unsigned_char_type_node
)
2762 /* Allow aliasing between signed and unsigned variants of the same
2763 type. We treat the signed variant as canonical. */
2764 if (TREE_CODE (t
) == INTEGER_TYPE
&& TYPE_UNSIGNED (t
))
2766 tree t1
= gimple_signed_type (t
);
2768 /* t1 == t can happen for boolean nodes which are always unsigned. */
2770 return get_alias_set (t1
);
2773 /* Allow aliasing between enumeral types and the underlying
2774 integer type. This is required for C since those are
2775 compatible types. */
2776 else if (TREE_CODE (t
) == ENUMERAL_TYPE
)
2778 tree t1
= lang_hooks
.types
.type_for_size (tree_to_uhwi (TYPE_SIZE (t
)),
2779 false /* short-cut above */);
2780 return get_alias_set (t1
);
2787 /* Helper for gimple_ior_addresses_taken_1. */
2790 gimple_ior_addresses_taken_1 (gimple
*, tree addr
, tree
, void *data
)
2792 bitmap addresses_taken
= (bitmap
)data
;
2793 addr
= get_base_address (addr
);
2797 bitmap_set_bit (addresses_taken
, DECL_UID (addr
));
2803 /* Set the bit for the uid of all decls that have their address taken
2804 in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there
2805 were any in this stmt. */
2808 gimple_ior_addresses_taken (bitmap addresses_taken
, gimple
*stmt
)
2810 return walk_stmt_load_store_addr_ops (stmt
, addresses_taken
, NULL
, NULL
,
2811 gimple_ior_addresses_taken_1
);
2815 /* Return true when STMTs arguments and return value match those of FNDECL,
2816 a decl of a builtin function. */
2819 gimple_builtin_call_types_compatible_p (const gimple
*stmt
, tree fndecl
)
2821 gcc_checking_assert (DECL_BUILT_IN_CLASS (fndecl
) != NOT_BUILT_IN
);
2823 if (DECL_BUILT_IN_CLASS (fndecl
) == BUILT_IN_NORMAL
)
2824 if (tree decl
= builtin_decl_explicit (DECL_FUNCTION_CODE (fndecl
)))
2827 tree ret
= gimple_call_lhs (stmt
);
2829 && !useless_type_conversion_p (TREE_TYPE (ret
),
2830 TREE_TYPE (TREE_TYPE (fndecl
))))
2833 tree targs
= TYPE_ARG_TYPES (TREE_TYPE (fndecl
));
2834 unsigned nargs
= gimple_call_num_args (stmt
);
2835 for (unsigned i
= 0; i
< nargs
; ++i
)
2837 /* Variadic args follow. */
2840 tree arg
= gimple_call_arg (stmt
, i
);
2841 tree type
= TREE_VALUE (targs
);
2842 if (!useless_type_conversion_p (type
, TREE_TYPE (arg
))
2843 /* char/short integral arguments are promoted to int
2844 by several frontends if targetm.calls.promote_prototypes
2845 is true. Allow such promotion too. */
2846 && !(INTEGRAL_TYPE_P (type
)
2847 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
)
2848 && targetm
.calls
.promote_prototypes (TREE_TYPE (fndecl
))
2849 && useless_type_conversion_p (integer_type_node
,
2852 targs
= TREE_CHAIN (targs
);
2854 if (targs
&& !VOID_TYPE_P (TREE_VALUE (targs
)))
2859 /* Return true when STMT is operator a replaceable delete call. */
2862 gimple_call_operator_delete_p (const gcall
*stmt
)
2866 if ((fndecl
= gimple_call_fndecl (stmt
)) != NULL_TREE
)
2867 return DECL_IS_OPERATOR_DELETE_P (fndecl
);
2871 /* Return true when STMT is builtins call. */
2874 gimple_call_builtin_p (const gimple
*stmt
)
2877 if (is_gimple_call (stmt
)
2878 && (fndecl
= gimple_call_fndecl (stmt
)) != NULL_TREE
2879 && DECL_BUILT_IN_CLASS (fndecl
) != NOT_BUILT_IN
)
2880 return gimple_builtin_call_types_compatible_p (stmt
, fndecl
);
2884 /* Return true when STMT is builtins call to CLASS. */
2887 gimple_call_builtin_p (const gimple
*stmt
, enum built_in_class klass
)
2890 if (is_gimple_call (stmt
)
2891 && (fndecl
= gimple_call_fndecl (stmt
)) != NULL_TREE
2892 && DECL_BUILT_IN_CLASS (fndecl
) == klass
)
2893 return gimple_builtin_call_types_compatible_p (stmt
, fndecl
);
2897 /* Return true when STMT is builtins call to CODE of CLASS. */
2900 gimple_call_builtin_p (const gimple
*stmt
, enum built_in_function code
)
2903 if (is_gimple_call (stmt
)
2904 && (fndecl
= gimple_call_fndecl (stmt
)) != NULL_TREE
2905 && fndecl_built_in_p (fndecl
, code
))
2906 return gimple_builtin_call_types_compatible_p (stmt
, fndecl
);
2910 /* If CALL is a call to a combined_fn (i.e. an internal function or
2911 a normal built-in function), return its code, otherwise return
2915 gimple_call_combined_fn (const gimple
*stmt
)
2917 if (const gcall
*call
= dyn_cast
<const gcall
*> (stmt
))
2919 if (gimple_call_internal_p (call
))
2920 return as_combined_fn (gimple_call_internal_fn (call
));
2922 tree fndecl
= gimple_call_fndecl (stmt
);
2924 && fndecl_built_in_p (fndecl
, BUILT_IN_NORMAL
)
2925 && gimple_builtin_call_types_compatible_p (stmt
, fndecl
))
2926 return as_combined_fn (DECL_FUNCTION_CODE (fndecl
));
2931 /* Return true if STMT clobbers memory. STMT is required to be a
2935 gimple_asm_clobbers_memory_p (const gasm
*stmt
)
2939 for (i
= 0; i
< gimple_asm_nclobbers (stmt
); i
++)
2941 tree op
= gimple_asm_clobber_op (stmt
, i
);
2942 if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op
)), "memory") == 0)
2946 /* Non-empty basic ASM implicitly clobbers memory. */
2947 if (gimple_asm_input_p (stmt
) && strlen (gimple_asm_string (stmt
)) != 0)
2953 /* Dump bitmap SET (assumed to contain VAR_DECLs) to FILE. */
2956 dump_decl_set (FILE *file
, bitmap set
)
2963 fprintf (file
, "{ ");
2965 EXECUTE_IF_SET_IN_BITMAP (set
, 0, i
, bi
)
2967 fprintf (file
, "D.%u", i
);
2968 fprintf (file
, " ");
2971 fprintf (file
, "}");
2974 fprintf (file
, "NIL");
2977 /* Return true when CALL is a call stmt that definitely doesn't
2978 free any memory or makes it unavailable otherwise. */
2980 nonfreeing_call_p (gimple
*call
)
2982 if (gimple_call_builtin_p (call
, BUILT_IN_NORMAL
)
2983 && gimple_call_flags (call
) & ECF_LEAF
)
2984 switch (DECL_FUNCTION_CODE (gimple_call_fndecl (call
)))
2986 /* Just in case these become ECF_LEAF in the future. */
2988 case BUILT_IN_TM_FREE
:
2989 case BUILT_IN_REALLOC
:
2990 case BUILT_IN_STACK_RESTORE
:
2991 case BUILT_IN_GOMP_FREE
:
2992 case BUILT_IN_GOMP_REALLOC
:
2997 else if (gimple_call_internal_p (call
))
2998 switch (gimple_call_internal_fn (call
))
3000 case IFN_ABNORMAL_DISPATCHER
:
3003 return tree_to_uhwi (gimple_call_arg (call
, 0)) == ASAN_MARK_UNPOISON
;
3005 if (gimple_call_flags (call
) & ECF_LEAF
)
3010 tree fndecl
= gimple_call_fndecl (call
);
3013 struct cgraph_node
*n
= cgraph_node::get (fndecl
);
3016 enum availability availability
;
3017 n
= n
->function_symbol (&availability
);
3018 if (!n
|| availability
<= AVAIL_INTERPOSABLE
)
3020 return n
->nonfreeing_fn
;
3023 /* Return true when CALL is a call stmt that definitely need not
3024 be considered to be a memory barrier. */
3026 nonbarrier_call_p (gimple
*call
)
3028 if (gimple_call_flags (call
) & (ECF_PURE
| ECF_CONST
))
3030 /* Should extend this to have a nonbarrier_fn flag, just as above in
3031 the nonfreeing case. */
3035 /* Callback for walk_stmt_load_store_ops.
3037 Return TRUE if OP will dereference the tree stored in DATA, FALSE
3040 This routine only makes a superficial check for a dereference. Thus
3041 it must only be used if it is safe to return a false negative. */
3043 check_loadstore (gimple
*, tree op
, tree
, void *data
)
3045 if (TREE_CODE (op
) == MEM_REF
|| TREE_CODE (op
) == TARGET_MEM_REF
)
3047 /* Some address spaces may legitimately dereference zero. */
3048 addr_space_t as
= TYPE_ADDR_SPACE (TREE_TYPE (op
));
3049 if (targetm
.addr_space
.zero_address_valid (as
))
3052 return operand_equal_p (TREE_OPERAND (op
, 0), (tree
)data
, 0);
3058 /* Return true if OP can be inferred to be non-NULL after STMT executes,
3059 either by using a pointer dereference or attributes. */
3061 infer_nonnull_range (gimple
*stmt
, tree op
)
3063 return (infer_nonnull_range_by_dereference (stmt
, op
)
3064 || infer_nonnull_range_by_attribute (stmt
, op
));
3067 /* Return true if OP can be inferred to be non-NULL after STMT
3068 executes by using a pointer dereference. */
3070 infer_nonnull_range_by_dereference (gimple
*stmt
, tree op
)
3072 /* We can only assume that a pointer dereference will yield
3073 non-NULL if -fdelete-null-pointer-checks is enabled. */
3074 if (!flag_delete_null_pointer_checks
3075 || !POINTER_TYPE_P (TREE_TYPE (op
))
3076 || gimple_code (stmt
) == GIMPLE_ASM
3077 || gimple_clobber_p (stmt
))
3080 if (walk_stmt_load_store_ops (stmt
, (void *)op
,
3081 check_loadstore
, check_loadstore
))
3087 /* Return true if OP can be inferred to be a non-NULL after STMT
3088 executes by using attributes. */
3090 infer_nonnull_range_by_attribute (gimple
*stmt
, tree op
)
3092 /* We can only assume that a pointer dereference will yield
3093 non-NULL if -fdelete-null-pointer-checks is enabled. */
3094 if (!flag_delete_null_pointer_checks
3095 || !POINTER_TYPE_P (TREE_TYPE (op
))
3096 || gimple_code (stmt
) == GIMPLE_ASM
)
3099 if (is_gimple_call (stmt
) && !gimple_call_internal_p (stmt
))
3101 tree fntype
= gimple_call_fntype (stmt
);
3102 tree attrs
= TYPE_ATTRIBUTES (fntype
);
3103 for (; attrs
; attrs
= TREE_CHAIN (attrs
))
3105 attrs
= lookup_attribute ("nonnull", attrs
);
3107 /* If "nonnull" wasn't specified, we know nothing about
3109 if (attrs
== NULL_TREE
)
3112 /* If "nonnull" applies to all the arguments, then ARG
3113 is non-null if it's in the argument list. */
3114 if (TREE_VALUE (attrs
) == NULL_TREE
)
3116 for (unsigned int i
= 0; i
< gimple_call_num_args (stmt
); i
++)
3118 if (POINTER_TYPE_P (TREE_TYPE (gimple_call_arg (stmt
, i
)))
3119 && operand_equal_p (op
, gimple_call_arg (stmt
, i
), 0))
3125 /* Now see if op appears in the nonnull list. */
3126 for (tree t
= TREE_VALUE (attrs
); t
; t
= TREE_CHAIN (t
))
3128 unsigned int idx
= TREE_INT_CST_LOW (TREE_VALUE (t
)) - 1;
3129 if (idx
< gimple_call_num_args (stmt
))
3131 tree arg
= gimple_call_arg (stmt
, idx
);
3132 if (operand_equal_p (op
, arg
, 0))
3139 /* If this function is marked as returning non-null, then we can
3140 infer OP is non-null if it is used in the return statement. */
3141 if (greturn
*return_stmt
= dyn_cast
<greturn
*> (stmt
))
3142 if (gimple_return_retval (return_stmt
)
3143 && operand_equal_p (gimple_return_retval (return_stmt
), op
, 0)
3144 && lookup_attribute ("returns_nonnull",
3145 TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl
))))
3151 /* Compare two case labels. Because the front end should already have
3152 made sure that case ranges do not overlap, it is enough to only compare
3153 the CASE_LOW values of each case label. */
3156 compare_case_labels (const void *p1
, const void *p2
)
3158 const_tree
const case1
= *(const_tree
const*)p1
;
3159 const_tree
const case2
= *(const_tree
const*)p2
;
3161 /* The 'default' case label always goes first. */
3162 if (!CASE_LOW (case1
))
3164 else if (!CASE_LOW (case2
))
3167 return tree_int_cst_compare (CASE_LOW (case1
), CASE_LOW (case2
));
3170 /* Sort the case labels in LABEL_VEC in place in ascending order. */
3173 sort_case_labels (vec
<tree
> &label_vec
)
3175 label_vec
.qsort (compare_case_labels
);
3178 /* Prepare a vector of case labels to be used in a GIMPLE_SWITCH statement.
3180 LABELS is a vector that contains all case labels to look at.
3182 INDEX_TYPE is the type of the switch index expression. Case labels
3183 in LABELS are discarded if their values are not in the value range
3184 covered by INDEX_TYPE. The remaining case label values are folded
3187 If a default case exists in LABELS, it is removed from LABELS and
3188 returned in DEFAULT_CASEP. If no default case exists, but the
3189 case labels already cover the whole range of INDEX_TYPE, a default
3190 case is returned pointing to one of the existing case labels.
3191 Otherwise DEFAULT_CASEP is set to NULL_TREE.
3193 DEFAULT_CASEP may be NULL, in which case the above comment doesn't
3194 apply and no action is taken regardless of whether a default case is
3198 preprocess_case_label_vec_for_gimple (vec
<tree
> &labels
,
3200 tree
*default_casep
)
3202 tree min_value
, max_value
;
3203 tree default_case
= NULL_TREE
;
3207 min_value
= TYPE_MIN_VALUE (index_type
);
3208 max_value
= TYPE_MAX_VALUE (index_type
);
3209 while (i
< labels
.length ())
3211 tree elt
= labels
[i
];
3212 tree low
= CASE_LOW (elt
);
3213 tree high
= CASE_HIGH (elt
);
3214 bool remove_element
= false;
3218 gcc_checking_assert (TREE_CODE (low
) == INTEGER_CST
);
3219 gcc_checking_assert (!high
|| TREE_CODE (high
) == INTEGER_CST
);
3221 /* This is a non-default case label, i.e. it has a value.
3223 See if the case label is reachable within the range of
3224 the index type. Remove out-of-range case values. Turn
3225 case ranges into a canonical form (high > low strictly)
3226 and convert the case label values to the index type.
3228 NB: The type of gimple_switch_index() may be the promoted
3229 type, but the case labels retain the original type. */
3233 /* This is a case range. Discard empty ranges.
3234 If the bounds or the range are equal, turn this
3235 into a simple (one-value) case. */
3236 int cmp
= tree_int_cst_compare (high
, low
);
3238 remove_element
= true;
3245 /* If the simple case value is unreachable, ignore it. */
3246 if ((TREE_CODE (min_value
) == INTEGER_CST
3247 && tree_int_cst_compare (low
, min_value
) < 0)
3248 || (TREE_CODE (max_value
) == INTEGER_CST
3249 && tree_int_cst_compare (low
, max_value
) > 0))
3250 remove_element
= true;
3252 low
= fold_convert (index_type
, low
);
3256 /* If the entire case range is unreachable, ignore it. */
3257 if ((TREE_CODE (min_value
) == INTEGER_CST
3258 && tree_int_cst_compare (high
, min_value
) < 0)
3259 || (TREE_CODE (max_value
) == INTEGER_CST
3260 && tree_int_cst_compare (low
, max_value
) > 0))
3261 remove_element
= true;
3264 /* If the lower bound is less than the index type's
3265 minimum value, truncate the range bounds. */
3266 if (TREE_CODE (min_value
) == INTEGER_CST
3267 && tree_int_cst_compare (low
, min_value
) < 0)
3269 low
= fold_convert (index_type
, low
);
3271 /* If the upper bound is greater than the index type's
3272 maximum value, truncate the range bounds. */
3273 if (TREE_CODE (max_value
) == INTEGER_CST
3274 && tree_int_cst_compare (high
, max_value
) > 0)
3276 high
= fold_convert (index_type
, high
);
3278 /* We may have folded a case range to a one-value case. */
3279 if (tree_int_cst_equal (low
, high
))
3284 CASE_LOW (elt
) = low
;
3285 CASE_HIGH (elt
) = high
;
3289 gcc_assert (!default_case
);
3291 /* The default case must be passed separately to the
3292 gimple_build_switch routine. But if DEFAULT_CASEP
3293 is NULL, we do not remove the default case (it would
3294 be completely lost). */
3296 remove_element
= true;
3300 labels
.ordered_remove (i
);
3306 if (!labels
.is_empty ())
3307 sort_case_labels (labels
);
3309 if (default_casep
&& !default_case
)
3311 /* If the switch has no default label, add one, so that we jump
3312 around the switch body. If the labels already cover the whole
3313 range of the switch index_type, add the default label pointing
3314 to one of the existing labels. */
3316 && TYPE_MIN_VALUE (index_type
)
3317 && TYPE_MAX_VALUE (index_type
)
3318 && tree_int_cst_equal (CASE_LOW (labels
[0]),
3319 TYPE_MIN_VALUE (index_type
)))
3321 tree low
, high
= CASE_HIGH (labels
[len
- 1]);
3323 high
= CASE_LOW (labels
[len
- 1]);
3324 if (tree_int_cst_equal (high
, TYPE_MAX_VALUE (index_type
)))
3326 tree widest_label
= labels
[0];
3327 for (i
= 1; i
< len
; i
++)
3329 high
= CASE_LOW (labels
[i
]);
3330 low
= CASE_HIGH (labels
[i
- 1]);
3332 low
= CASE_LOW (labels
[i
- 1]);
3334 if (CASE_HIGH (labels
[i
]) != NULL_TREE
3335 && (CASE_HIGH (widest_label
) == NULL_TREE
3337 (wi::to_wide (CASE_HIGH (labels
[i
]))
3338 - wi::to_wide (CASE_LOW (labels
[i
])),
3339 wi::to_wide (CASE_HIGH (widest_label
))
3340 - wi::to_wide (CASE_LOW (widest_label
))))))
3341 widest_label
= labels
[i
];
3343 if (wi::to_wide (low
) + 1 != wi::to_wide (high
))
3348 /* Designate the label with the widest range to be the
3350 tree label
= CASE_LABEL (widest_label
);
3351 default_case
= build_case_label (NULL_TREE
, NULL_TREE
,
3359 *default_casep
= default_case
;
3362 /* Set the location of all statements in SEQ to LOC. */
3365 gimple_seq_set_location (gimple_seq seq
, location_t loc
)
3367 for (gimple_stmt_iterator i
= gsi_start (seq
); !gsi_end_p (i
); gsi_next (&i
))
3368 gimple_set_location (gsi_stmt (i
), loc
);
3371 /* Release SSA_NAMEs in SEQ as well as the GIMPLE statements. */
3374 gimple_seq_discard (gimple_seq seq
)
3376 gimple_stmt_iterator gsi
;
3378 for (gsi
= gsi_start (seq
); !gsi_end_p (gsi
); )
3380 gimple
*stmt
= gsi_stmt (gsi
);
3381 gsi_remove (&gsi
, true);
3382 release_defs (stmt
);
3387 /* See if STMT now calls function that takes no parameters and if so, drop
3388 call arguments. This is used when devirtualization machinery redirects
3389 to __builtin_unreachable or __cxa_pure_virtual. */
3392 maybe_remove_unused_call_args (struct function
*fn
, gimple
*stmt
)
3394 tree decl
= gimple_call_fndecl (stmt
);
3395 if (TYPE_ARG_TYPES (TREE_TYPE (decl
))
3396 && TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl
))) == void_type_node
3397 && gimple_call_num_args (stmt
))
3399 gimple_set_num_ops (stmt
, 3);
3400 update_stmt_fn (fn
, stmt
);
3404 /* Return false if STMT will likely expand to real function call. */
3407 gimple_inexpensive_call_p (gcall
*stmt
)
3409 if (gimple_call_internal_p (stmt
))
3411 tree decl
= gimple_call_fndecl (stmt
);
3412 if (decl
&& is_inexpensive_builtin (decl
))
3417 /* Return a non-artificial location for STMT. If STMT does not have
3418 location information, get the location from EXPR. */
3421 gimple_or_expr_nonartificial_location (gimple
*stmt
, tree expr
)
3423 location_t loc
= gimple_nonartificial_location (stmt
);
3424 if (loc
== UNKNOWN_LOCATION
&& EXPR_HAS_LOCATION (expr
))
3425 loc
= tree_nonartificial_location (expr
);
3426 return expansion_point_location_if_in_system_header (loc
);
3432 namespace selftest
{
3434 /* Selftests for core gimple structures. */
3436 /* Verify that STMT is pretty-printed as EXPECTED.
3437 Helper function for selftests. */
3440 verify_gimple_pp (const char *expected
, gimple
*stmt
)
3443 pp_gimple_stmt_1 (&pp
, stmt
, 0 /* spc */, TDF_NONE
/* flags */);
3444 ASSERT_STREQ (expected
, pp_formatted_text (&pp
));
3447 /* Build a GIMPLE_ASSIGN equivalent to
3449 and verify various properties of it. */
3452 test_assign_single ()
3454 tree type
= integer_type_node
;
3455 tree lhs
= build_decl (UNKNOWN_LOCATION
, VAR_DECL
,
3456 get_identifier ("tmp"),
3458 tree rhs
= build_int_cst (type
, 5);
3459 gassign
*stmt
= gimple_build_assign (lhs
, rhs
);
3460 verify_gimple_pp ("tmp = 5;", stmt
);
3462 ASSERT_TRUE (is_gimple_assign (stmt
));
3463 ASSERT_EQ (lhs
, gimple_assign_lhs (stmt
));
3464 ASSERT_EQ (lhs
, gimple_get_lhs (stmt
));
3465 ASSERT_EQ (rhs
, gimple_assign_rhs1 (stmt
));
3466 ASSERT_EQ (NULL
, gimple_assign_rhs2 (stmt
));
3467 ASSERT_EQ (NULL
, gimple_assign_rhs3 (stmt
));
3468 ASSERT_TRUE (gimple_assign_single_p (stmt
));
3469 ASSERT_EQ (INTEGER_CST
, gimple_assign_rhs_code (stmt
));
3472 /* Build a GIMPLE_ASSIGN equivalent to
3474 and verify various properties of it. */
3477 test_assign_binop ()
3479 tree type
= integer_type_node
;
3480 tree lhs
= build_decl (UNKNOWN_LOCATION
, VAR_DECL
,
3481 get_identifier ("tmp"),
3483 tree a
= build_decl (UNKNOWN_LOCATION
, VAR_DECL
,
3484 get_identifier ("a"),
3486 tree b
= build_decl (UNKNOWN_LOCATION
, VAR_DECL
,
3487 get_identifier ("b"),
3489 gassign
*stmt
= gimple_build_assign (lhs
, MULT_EXPR
, a
, b
);
3490 verify_gimple_pp ("tmp = a * b;", stmt
);
3492 ASSERT_TRUE (is_gimple_assign (stmt
));
3493 ASSERT_EQ (lhs
, gimple_assign_lhs (stmt
));
3494 ASSERT_EQ (lhs
, gimple_get_lhs (stmt
));
3495 ASSERT_EQ (a
, gimple_assign_rhs1 (stmt
));
3496 ASSERT_EQ (b
, gimple_assign_rhs2 (stmt
));
3497 ASSERT_EQ (NULL
, gimple_assign_rhs3 (stmt
));
3498 ASSERT_FALSE (gimple_assign_single_p (stmt
));
3499 ASSERT_EQ (MULT_EXPR
, gimple_assign_rhs_code (stmt
));
3502 /* Build a GIMPLE_NOP and verify various properties of it. */
3507 gimple
*stmt
= gimple_build_nop ();
3508 verify_gimple_pp ("GIMPLE_NOP", stmt
);
3509 ASSERT_EQ (GIMPLE_NOP
, gimple_code (stmt
));
3510 ASSERT_EQ (NULL
, gimple_get_lhs (stmt
));
3511 ASSERT_FALSE (gimple_assign_single_p (stmt
));
3514 /* Build a GIMPLE_RETURN equivalent to
3516 and verify various properties of it. */
3521 tree type
= integer_type_node
;
3522 tree val
= build_int_cst (type
, 7);
3523 greturn
*stmt
= gimple_build_return (val
);
3524 verify_gimple_pp ("return 7;", stmt
);
3526 ASSERT_EQ (GIMPLE_RETURN
, gimple_code (stmt
));
3527 ASSERT_EQ (NULL
, gimple_get_lhs (stmt
));
3528 ASSERT_EQ (val
, gimple_return_retval (stmt
));
3529 ASSERT_FALSE (gimple_assign_single_p (stmt
));
3532 /* Build a GIMPLE_RETURN equivalent to
3534 and verify various properties of it. */
3537 test_return_without_value ()
3539 greturn
*stmt
= gimple_build_return (NULL
);
3540 verify_gimple_pp ("return;", stmt
);
3542 ASSERT_EQ (GIMPLE_RETURN
, gimple_code (stmt
));
3543 ASSERT_EQ (NULL
, gimple_get_lhs (stmt
));
3544 ASSERT_EQ (NULL
, gimple_return_retval (stmt
));
3545 ASSERT_FALSE (gimple_assign_single_p (stmt
));
3548 /* Run all of the selftests within this file. */
3553 test_assign_single ();
3554 test_assign_binop ();
3556 test_return_stmt ();
3557 test_return_without_value ();
3560 } // namespace selftest
3563 #endif /* CHECKING_P */