1 /* Default target hook functions.
2 Copyright (C) 2003-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* The migration of target macros to target hooks works as follows:
22 1. Create a target hook that uses the existing target macros to
23 implement the same functionality.
25 2. Convert all the MI files to use the hook instead of the macro.
27 3. Repeat for a majority of the remaining target macros. This will
30 4. Tell target maintainers to start migrating.
32 5. Eventually convert the backends to override the hook instead of
33 defining the macros. This will take some time too.
35 6. TBD when, poison the macros. Unmigrated targets will break at
38 Note that we expect steps 1-3 to be done by the people that
39 understand what the MI does with each macro, and step 5 to be done
40 by the target maintainers for their respective targets.
42 Note that steps 1 and 2 don't have to be done together, but no
43 target can override the new hook until step 2 is complete for it.
45 Once the macros are poisoned, we will revert to the old migration
46 rules - migrate the macro, callers, and targets all at once. This
47 comment can thus be removed at that point. */
51 #include "coretypes.h"
57 #include "fold-const.h"
58 #include "stor-layout.h"
60 #include "hard-reg-set.h"
63 #include "insn-config.h"
72 #include "diagnostic-core.h"
77 #include "insn-codes.h"
82 #include "tree-ssa-alias.h"
83 #include "gimple-expr.h"
85 #include "stringpool.h"
86 #include "tree-ssanames.h"
90 default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED
,
91 rtx addr ATTRIBUTE_UNUSED
,
92 bool strict ATTRIBUTE_UNUSED
)
94 #ifdef GO_IF_LEGITIMATE_ADDRESS
95 /* Defer to the old implementation using a goto. */
97 return strict_memory_address_p (mode
, addr
);
99 return memory_address_p (mode
, addr
);
106 default_external_libcall (rtx fun ATTRIBUTE_UNUSED
)
108 #ifdef ASM_OUTPUT_EXTERNAL_LIBCALL
109 ASM_OUTPUT_EXTERNAL_LIBCALL (asm_out_file
, fun
);
114 default_unspec_may_trap_p (const_rtx x
, unsigned flags
)
118 /* Any floating arithmetic may trap. */
119 if ((SCALAR_FLOAT_MODE_P (GET_MODE (x
)) && flag_trapping_math
))
122 for (i
= 0; i
< XVECLEN (x
, 0); ++i
)
124 if (may_trap_p_1 (XVECEXP (x
, 0, i
), flags
))
132 default_promote_function_mode (const_tree type ATTRIBUTE_UNUSED
,
134 int *punsignedp ATTRIBUTE_UNUSED
,
135 const_tree funtype ATTRIBUTE_UNUSED
,
136 int for_return ATTRIBUTE_UNUSED
)
138 if (type
!= NULL_TREE
&& for_return
== 2)
139 return promote_mode (type
, mode
, punsignedp
);
144 default_promote_function_mode_always_promote (const_tree type
,
147 const_tree funtype ATTRIBUTE_UNUSED
,
148 int for_return ATTRIBUTE_UNUSED
)
150 return promote_mode (type
, mode
, punsignedp
);
154 default_cc_modes_compatible (machine_mode m1
, machine_mode m2
)
162 default_return_in_memory (const_tree type
,
163 const_tree fntype ATTRIBUTE_UNUSED
)
165 return (TYPE_MODE (type
) == BLKmode
);
169 default_legitimize_address (rtx x
, rtx orig_x ATTRIBUTE_UNUSED
,
170 machine_mode mode ATTRIBUTE_UNUSED
)
176 default_legitimize_address_displacement (rtx
*disp ATTRIBUTE_UNUSED
,
177 rtx
*offset ATTRIBUTE_UNUSED
,
178 machine_mode mode ATTRIBUTE_UNUSED
)
184 default_expand_builtin_saveregs (void)
186 error ("__builtin_saveregs not supported by this target");
191 default_setup_incoming_varargs (cumulative_args_t ca ATTRIBUTE_UNUSED
,
192 machine_mode mode ATTRIBUTE_UNUSED
,
193 tree type ATTRIBUTE_UNUSED
,
194 int *pretend_arg_size ATTRIBUTE_UNUSED
,
195 int second_time ATTRIBUTE_UNUSED
)
199 /* The default implementation of TARGET_BUILTIN_SETJMP_FRAME_VALUE. */
202 default_builtin_setjmp_frame_value (void)
204 return virtual_stack_vars_rtx
;
207 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns false. */
210 hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t ca ATTRIBUTE_UNUSED
)
216 default_pretend_outgoing_varargs_named (cumulative_args_t ca ATTRIBUTE_UNUSED
)
218 return (targetm
.calls
.setup_incoming_varargs
219 != default_setup_incoming_varargs
);
223 default_eh_return_filter_mode (void)
225 return targetm
.unwind_word_mode ();
229 default_libgcc_cmp_return_mode (void)
235 default_libgcc_shift_count_mode (void)
241 default_unwind_word_mode (void)
246 /* The default implementation of TARGET_SHIFT_TRUNCATION_MASK. */
248 unsigned HOST_WIDE_INT
249 default_shift_truncation_mask (machine_mode mode
)
251 return SHIFT_COUNT_TRUNCATED
? GET_MODE_BITSIZE (mode
) - 1 : 0;
254 /* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */
257 default_min_divisions_for_recip_mul (machine_mode mode ATTRIBUTE_UNUSED
)
259 return have_insn_for (DIV
, mode
) ? 3 : 2;
262 /* The default implementation of TARGET_MODE_REP_EXTENDED. */
265 default_mode_rep_extended (machine_mode mode ATTRIBUTE_UNUSED
,
266 machine_mode mode_rep ATTRIBUTE_UNUSED
)
271 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true. */
274 hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t a ATTRIBUTE_UNUSED
)
279 /* Return machine mode for non-standard suffix
280 or VOIDmode if non-standard suffixes are unsupported. */
282 default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED
)
287 /* The generic C++ ABI specifies this is a 64-bit value. */
289 default_cxx_guard_type (void)
291 return long_long_integer_type_node
;
294 /* Returns the size of the cookie to use when allocating an array
295 whose elements have the indicated TYPE. Assumes that it is already
296 known that a cookie is needed. */
299 default_cxx_get_cookie_size (tree type
)
303 /* We need to allocate an additional max (sizeof (size_t), alignof
304 (true_type)) bytes. */
308 sizetype_size
= size_in_bytes (sizetype
);
309 type_align
= size_int (TYPE_ALIGN_UNIT (type
));
310 if (tree_int_cst_lt (type_align
, sizetype_size
))
311 cookie_size
= sizetype_size
;
313 cookie_size
= type_align
;
318 /* Return true if a parameter must be passed by reference. This version
319 of the TARGET_PASS_BY_REFERENCE hook uses just MUST_PASS_IN_STACK. */
322 hook_pass_by_reference_must_pass_in_stack (cumulative_args_t c ATTRIBUTE_UNUSED
,
323 machine_mode mode ATTRIBUTE_UNUSED
, const_tree type ATTRIBUTE_UNUSED
,
324 bool named_arg ATTRIBUTE_UNUSED
)
326 return targetm
.calls
.must_pass_in_stack (mode
, type
);
329 /* Return true if a parameter follows callee copies conventions. This
330 version of the hook is true for all named arguments. */
333 hook_callee_copies_named (cumulative_args_t ca ATTRIBUTE_UNUSED
,
334 machine_mode mode ATTRIBUTE_UNUSED
,
335 const_tree type ATTRIBUTE_UNUSED
, bool named
)
340 /* Emit to STREAM the assembler syntax for insn operand X. */
343 default_print_operand (FILE *stream ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
344 int code ATTRIBUTE_UNUSED
)
347 PRINT_OPERAND (stream
, x
, code
);
353 /* Emit to STREAM the assembler syntax for an insn operand whose memory
357 default_print_operand_address (FILE *stream ATTRIBUTE_UNUSED
,
358 rtx x ATTRIBUTE_UNUSED
)
360 #ifdef PRINT_OPERAND_ADDRESS
361 PRINT_OPERAND_ADDRESS (stream
, x
);
367 /* Return true if CODE is a valid punctuation character for the
368 `print_operand' hook. */
371 default_print_operand_punct_valid_p (unsigned char code ATTRIBUTE_UNUSED
)
373 #ifdef PRINT_OPERAND_PUNCT_VALID_P
374 return PRINT_OPERAND_PUNCT_VALID_P (code
);
380 /* The default implementation of TARGET_MANGLE_ASSEMBLER_NAME. */
382 default_mangle_assembler_name (const char *name ATTRIBUTE_UNUSED
)
384 const char *skipped
= name
+ (*name
== '*' ? 1 : 0);
385 const char *stripped
= targetm
.strip_name_encoding (skipped
);
386 if (*name
!= '*' && user_label_prefix
[0])
387 stripped
= ACONCAT ((user_label_prefix
, stripped
, NULL
));
388 return get_identifier (stripped
);
391 /* True if MODE is valid for the target. By "valid", we mean able to
392 be manipulated in non-trivial ways. In particular, this means all
393 the arithmetic is supported.
395 By default we guess this means that any C type is supported. If
396 we can't map the mode back to a type that would be available in C,
397 then reject it. Special case, here, is the double-word arithmetic
398 supported by optabs.c. */
401 default_scalar_mode_supported_p (machine_mode mode
)
403 int precision
= GET_MODE_PRECISION (mode
);
405 switch (GET_MODE_CLASS (mode
))
407 case MODE_PARTIAL_INT
:
409 if (precision
== CHAR_TYPE_SIZE
)
411 if (precision
== SHORT_TYPE_SIZE
)
413 if (precision
== INT_TYPE_SIZE
)
415 if (precision
== LONG_TYPE_SIZE
)
417 if (precision
== LONG_LONG_TYPE_SIZE
)
419 if (precision
== 2 * BITS_PER_WORD
)
424 if (precision
== FLOAT_TYPE_SIZE
)
426 if (precision
== DOUBLE_TYPE_SIZE
)
428 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
432 case MODE_DECIMAL_FLOAT
:
444 /* Return true if libgcc supports floating-point mode MODE (known to
445 be supported as a scalar mode). */
448 default_libgcc_floating_mode_supported_p (machine_mode mode
)
471 /* Make some target macros useable by target-independent code. */
473 targhook_words_big_endian (void)
475 return !!WORDS_BIG_ENDIAN
;
479 targhook_float_words_big_endian (void)
481 return !!FLOAT_WORDS_BIG_ENDIAN
;
484 /* True if the target supports floating-point exceptions and rounding
488 default_float_exceptions_rounding_supported_p (void)
497 /* True if the target supports decimal floating point. */
500 default_decimal_float_supported_p (void)
502 return ENABLE_DECIMAL_FLOAT
;
505 /* True if the target supports fixed-point arithmetic. */
508 default_fixed_point_supported_p (void)
510 return ENABLE_FIXED_POINT
;
513 /* True if the target supports GNU indirect functions. */
516 default_has_ifunc_p (void)
518 return HAVE_GNU_INDIRECT_FUNCTION
;
521 /* NULL if INSN insn is valid within a low-overhead loop, otherwise returns
524 This function checks whether a given INSN is valid within a low-overhead
525 loop. If INSN is invalid it returns the reason for that, otherwise it
526 returns NULL. A called function may clobber any special registers required
527 for low-overhead looping. Additionally, some targets (eg, PPC) use the count
528 register for branch on table instructions. We reject the doloop pattern in
532 default_invalid_within_doloop (const rtx_insn
*insn
)
535 return "Function call in loop.";
537 if (tablejump_p (insn
, NULL
, NULL
) || computed_jump_p (insn
))
538 return "Computed branch in the loop.";
543 /* Mapping of builtin functions to vectorized variants. */
546 default_builtin_vectorized_function (tree fndecl ATTRIBUTE_UNUSED
,
547 tree type_out ATTRIBUTE_UNUSED
,
548 tree type_in ATTRIBUTE_UNUSED
)
553 /* Vectorized conversion. */
556 default_builtin_vectorized_conversion (unsigned int code ATTRIBUTE_UNUSED
,
557 tree dest_type ATTRIBUTE_UNUSED
,
558 tree src_type ATTRIBUTE_UNUSED
)
563 /* Default vectorizer cost model values. */
566 default_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost
,
568 int misalign ATTRIBUTE_UNUSED
)
572 switch (type_of_cost
)
582 case cond_branch_not_taken
:
584 case vec_promote_demote
:
588 case unaligned_store
:
591 case cond_branch_taken
:
595 elements
= TYPE_VECTOR_SUBPARTS (vectype
);
596 return elements
/ 2 + 1;
606 default_builtin_reciprocal (unsigned int fn ATTRIBUTE_UNUSED
,
607 bool md_fn ATTRIBUTE_UNUSED
,
608 bool sqrt ATTRIBUTE_UNUSED
)
614 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false (
615 cumulative_args_t ca ATTRIBUTE_UNUSED
,
616 machine_mode mode ATTRIBUTE_UNUSED
,
617 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
623 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true (
624 cumulative_args_t ca ATTRIBUTE_UNUSED
,
625 machine_mode mode ATTRIBUTE_UNUSED
,
626 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
632 hook_int_CUMULATIVE_ARGS_mode_tree_bool_0 (
633 cumulative_args_t ca ATTRIBUTE_UNUSED
,
634 machine_mode mode ATTRIBUTE_UNUSED
,
635 tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
641 default_function_arg_advance (cumulative_args_t ca ATTRIBUTE_UNUSED
,
642 machine_mode mode ATTRIBUTE_UNUSED
,
643 const_tree type ATTRIBUTE_UNUSED
,
644 bool named ATTRIBUTE_UNUSED
)
650 default_function_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
651 machine_mode mode ATTRIBUTE_UNUSED
,
652 const_tree type ATTRIBUTE_UNUSED
,
653 bool named ATTRIBUTE_UNUSED
)
659 default_function_incoming_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
660 machine_mode mode ATTRIBUTE_UNUSED
,
661 const_tree type ATTRIBUTE_UNUSED
,
662 bool named ATTRIBUTE_UNUSED
)
668 default_function_arg_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
669 const_tree type ATTRIBUTE_UNUSED
)
671 return PARM_BOUNDARY
;
675 default_function_arg_round_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
676 const_tree type ATTRIBUTE_UNUSED
)
678 return PARM_BOUNDARY
;
682 hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED
)
687 hook_invalid_arg_for_unprototyped_fn (
688 const_tree typelist ATTRIBUTE_UNUSED
,
689 const_tree funcdecl ATTRIBUTE_UNUSED
,
690 const_tree val ATTRIBUTE_UNUSED
)
695 /* Initialize the stack protection decls. */
697 /* Stack protection related decls living in libgcc. */
698 static GTY(()) tree stack_chk_guard_decl
;
701 default_stack_protect_guard (void)
703 tree t
= stack_chk_guard_decl
;
709 t
= build_decl (UNKNOWN_LOCATION
,
710 VAR_DECL
, get_identifier ("__stack_chk_guard"),
714 DECL_EXTERNAL (t
) = 1;
716 TREE_THIS_VOLATILE (t
) = 1;
717 DECL_ARTIFICIAL (t
) = 1;
718 DECL_IGNORED_P (t
) = 1;
720 /* Do not share RTL as the declaration is visible outside of
723 RTX_FLAG (x
, used
) = 1;
725 stack_chk_guard_decl
= t
;
731 static GTY(()) tree stack_chk_fail_decl
;
734 default_external_stack_protect_fail (void)
736 tree t
= stack_chk_fail_decl
;
740 t
= build_function_type_list (void_type_node
, NULL_TREE
);
741 t
= build_decl (UNKNOWN_LOCATION
,
742 FUNCTION_DECL
, get_identifier ("__stack_chk_fail"), t
);
745 DECL_EXTERNAL (t
) = 1;
747 TREE_THIS_VOLATILE (t
) = 1;
748 TREE_NOTHROW (t
) = 1;
749 DECL_ARTIFICIAL (t
) = 1;
750 DECL_IGNORED_P (t
) = 1;
751 DECL_VISIBILITY (t
) = VISIBILITY_DEFAULT
;
752 DECL_VISIBILITY_SPECIFIED (t
) = 1;
754 stack_chk_fail_decl
= t
;
757 return build_call_expr (t
, 0);
761 default_hidden_stack_protect_fail (void)
763 #ifndef HAVE_GAS_HIDDEN
764 return default_external_stack_protect_fail ();
766 tree t
= stack_chk_fail_decl
;
769 return default_external_stack_protect_fail ();
773 t
= build_function_type_list (void_type_node
, NULL_TREE
);
774 t
= build_decl (UNKNOWN_LOCATION
, FUNCTION_DECL
,
775 get_identifier ("__stack_chk_fail_local"), t
);
778 DECL_EXTERNAL (t
) = 1;
780 TREE_THIS_VOLATILE (t
) = 1;
781 TREE_NOTHROW (t
) = 1;
782 DECL_ARTIFICIAL (t
) = 1;
783 DECL_IGNORED_P (t
) = 1;
784 DECL_VISIBILITY_SPECIFIED (t
) = 1;
785 DECL_VISIBILITY (t
) = VISIBILITY_HIDDEN
;
787 stack_chk_fail_decl
= t
;
790 return build_call_expr (t
, 0);
795 hook_bool_const_rtx_commutative_p (const_rtx x
,
796 int outer_code ATTRIBUTE_UNUSED
)
798 return COMMUTATIVE_P (x
);
802 default_function_value (const_tree ret_type ATTRIBUTE_UNUSED
,
803 const_tree fn_decl_or_type
,
804 bool outgoing ATTRIBUTE_UNUSED
)
806 /* The old interface doesn't handle receiving the function type. */
808 && !DECL_P (fn_decl_or_type
))
809 fn_decl_or_type
= NULL
;
811 #ifdef FUNCTION_VALUE
812 return FUNCTION_VALUE (ret_type
, fn_decl_or_type
);
819 default_libcall_value (machine_mode mode ATTRIBUTE_UNUSED
,
820 const_rtx fun ATTRIBUTE_UNUSED
)
823 return LIBCALL_VALUE (mode
);
829 /* The default hook for TARGET_FUNCTION_VALUE_REGNO_P. */
832 default_function_value_regno_p (const unsigned int regno ATTRIBUTE_UNUSED
)
834 #ifdef FUNCTION_VALUE_REGNO_P
835 return FUNCTION_VALUE_REGNO_P (regno
);
842 default_internal_arg_pointer (void)
844 /* If the reg that the virtual arg pointer will be translated into is
845 not a fixed reg or is the stack pointer, make a copy of the virtual
846 arg pointer, and address parms via the copy. The frame pointer is
847 considered fixed even though it is not marked as such. */
848 if ((ARG_POINTER_REGNUM
== STACK_POINTER_REGNUM
849 || ! (fixed_regs
[ARG_POINTER_REGNUM
]
850 || ARG_POINTER_REGNUM
== FRAME_POINTER_REGNUM
)))
851 return copy_to_reg (virtual_incoming_args_rtx
);
853 return virtual_incoming_args_rtx
;
857 default_static_chain (const_tree
ARG_UNUSED (fndecl_or_type
), bool incoming_p
)
861 #ifdef STATIC_CHAIN_INCOMING_REGNUM
862 return gen_rtx_REG (Pmode
, STATIC_CHAIN_INCOMING_REGNUM
);
866 #ifdef STATIC_CHAIN_REGNUM
867 return gen_rtx_REG (Pmode
, STATIC_CHAIN_REGNUM
);
871 static bool issued_error
;
875 sorry ("nested functions not supported on this target");
878 /* It really doesn't matter what we return here, so long at it
879 doesn't cause the rest of the compiler to crash. */
880 return gen_rtx_MEM (Pmode
, stack_pointer_rtx
);
885 default_trampoline_init (rtx
ARG_UNUSED (m_tramp
), tree
ARG_UNUSED (t_func
),
886 rtx
ARG_UNUSED (r_chain
))
888 sorry ("nested function trampolines not supported on this target");
892 default_return_pops_args (tree fundecl ATTRIBUTE_UNUSED
,
893 tree funtype ATTRIBUTE_UNUSED
,
894 int size ATTRIBUTE_UNUSED
)
900 default_branch_target_register_class (void)
906 default_ira_change_pseudo_allocno_class (int regno ATTRIBUTE_UNUSED
,
919 default_register_priority (int hard_regno ATTRIBUTE_UNUSED
)
925 default_register_usage_leveling_p (void)
931 default_different_addr_displacement_p (void)
937 default_secondary_reload (bool in_p ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
938 reg_class_t reload_class_i ATTRIBUTE_UNUSED
,
939 machine_mode reload_mode ATTRIBUTE_UNUSED
,
940 secondary_reload_info
*sri
)
942 enum reg_class rclass
= NO_REGS
;
943 enum reg_class reload_class
= (enum reg_class
) reload_class_i
;
945 if (sri
->prev_sri
&& sri
->prev_sri
->t_icode
!= CODE_FOR_nothing
)
947 sri
->icode
= sri
->prev_sri
->t_icode
;
950 #ifdef SECONDARY_INPUT_RELOAD_CLASS
952 rclass
= SECONDARY_INPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
954 #ifdef SECONDARY_OUTPUT_RELOAD_CLASS
956 rclass
= SECONDARY_OUTPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
958 if (rclass
!= NO_REGS
)
961 = direct_optab_handler (in_p
? reload_in_optab
: reload_out_optab
,
964 if (icode
!= CODE_FOR_nothing
965 && !insn_operand_matches (icode
, in_p
, x
))
966 icode
= CODE_FOR_nothing
;
967 else if (icode
!= CODE_FOR_nothing
)
969 const char *insn_constraint
, *scratch_constraint
;
970 enum reg_class insn_class
, scratch_class
;
972 gcc_assert (insn_data
[(int) icode
].n_operands
== 3);
973 insn_constraint
= insn_data
[(int) icode
].operand
[!in_p
].constraint
;
974 if (!*insn_constraint
)
975 insn_class
= ALL_REGS
;
980 gcc_assert (*insn_constraint
== '=');
983 insn_class
= (reg_class_for_constraint
984 (lookup_constraint (insn_constraint
)));
985 gcc_assert (insn_class
!= NO_REGS
);
988 scratch_constraint
= insn_data
[(int) icode
].operand
[2].constraint
;
989 /* The scratch register's constraint must start with "=&",
990 except for an input reload, where only "=" is necessary,
991 and where it might be beneficial to re-use registers from
993 gcc_assert (scratch_constraint
[0] == '='
994 && (in_p
|| scratch_constraint
[1] == '&'));
995 scratch_constraint
++;
996 if (*scratch_constraint
== '&')
997 scratch_constraint
++;
998 scratch_class
= (reg_class_for_constraint
999 (lookup_constraint (scratch_constraint
)));
1001 if (reg_class_subset_p (reload_class
, insn_class
))
1003 gcc_assert (scratch_class
== rclass
);
1007 rclass
= insn_class
;
1010 if (rclass
== NO_REGS
)
1013 sri
->t_icode
= icode
;
1018 /* By default, if flag_pic is true, then neither local nor global relocs
1019 should be placed in readonly memory. */
1022 default_reloc_rw_mask (void)
1024 return flag_pic
? 3 : 0;
1027 /* By default, do no modification. */
1028 tree
default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED
,
1034 /* Default to natural alignment for vector types. */
1036 default_vector_alignment (const_tree type
)
1038 return tree_to_shwi (TYPE_SIZE (type
));
1042 default_builtin_vector_alignment_reachable (const_tree type
, bool is_packed
)
1047 /* Assuming that types whose size is > pointer-size are not guaranteed to be
1048 naturally aligned. */
1049 if (tree_int_cst_compare (TYPE_SIZE (type
), bitsize_int (POINTER_SIZE
)) > 0)
1052 /* Assuming that types whose size is <= pointer-size
1053 are naturally aligned. */
1057 /* By default, assume that a target supports any factor of misalignment
1058 memory access if it supports movmisalign patten.
1059 is_packed is true if the memory access is defined in a packed struct. */
1061 default_builtin_support_vector_misalignment (machine_mode mode
,
1069 if (optab_handler (movmisalign_optab
, mode
) != CODE_FOR_nothing
)
1074 /* By default, only attempt to parallelize bitwise operations, and
1075 possibly adds/subtracts using bit-twiddling. */
1078 default_preferred_simd_mode (machine_mode mode ATTRIBUTE_UNUSED
)
1083 /* By default only the size derived from the preferred vector mode
1087 default_autovectorize_vector_sizes (void)
1092 /* By default, the cost model accumulates three separate costs (prologue,
1093 loop body, and epilogue) for a vectorized loop or block. So allocate an
1094 array of three unsigned ints, set it to zero, and return its address. */
1097 default_init_cost (struct loop
*loop_info ATTRIBUTE_UNUSED
)
1099 unsigned *cost
= XNEWVEC (unsigned, 3);
1100 cost
[vect_prologue
] = cost
[vect_body
] = cost
[vect_epilogue
] = 0;
1104 /* By default, the cost model looks up the cost of the given statement
1105 kind and mode, multiplies it by the occurrence count, accumulates
1106 it into the cost specified by WHERE, and returns the cost added. */
1109 default_add_stmt_cost (void *data
, int count
, enum vect_cost_for_stmt kind
,
1110 struct _stmt_vec_info
*stmt_info
, int misalign
,
1111 enum vect_cost_model_location where
)
1113 unsigned *cost
= (unsigned *) data
;
1114 unsigned retval
= 0;
1116 tree vectype
= stmt_info
? stmt_vectype (stmt_info
) : NULL_TREE
;
1117 int stmt_cost
= targetm
.vectorize
.builtin_vectorization_cost (kind
, vectype
,
1119 /* Statements in an inner loop relative to the loop being
1120 vectorized are weighted more heavily. The value here is
1121 arbitrary and could potentially be improved with analysis. */
1122 if (where
== vect_body
&& stmt_info
&& stmt_in_inner_loop_p (stmt_info
))
1123 count
*= 50; /* FIXME. */
1125 retval
= (unsigned) (count
* stmt_cost
);
1126 cost
[where
] += retval
;
1131 /* By default, the cost model just returns the accumulated costs. */
1134 default_finish_cost (void *data
, unsigned *prologue_cost
,
1135 unsigned *body_cost
, unsigned *epilogue_cost
)
1137 unsigned *cost
= (unsigned *) data
;
1138 *prologue_cost
= cost
[vect_prologue
];
1139 *body_cost
= cost
[vect_body
];
1140 *epilogue_cost
= cost
[vect_epilogue
];
1143 /* Free the cost data. */
1146 default_destroy_cost_data (void *data
)
1151 /* Determine whether or not a pointer mode is valid. Assume defaults
1152 of ptr_mode or Pmode - can be overridden. */
1154 default_valid_pointer_mode (machine_mode mode
)
1156 return (mode
== ptr_mode
|| mode
== Pmode
);
1159 /* Determine whether the memory reference specified by REF may alias
1160 the C libraries errno location. */
1162 default_ref_may_alias_errno (ao_ref
*ref
)
1164 tree base
= ao_ref_base (ref
);
1165 /* The default implementation assumes the errno location is
1166 a declaration of type int or is always accessed via a
1167 pointer to int. We assume that accesses to errno are
1168 not deliberately obfuscated (even in conforming ways). */
1169 if (TYPE_UNSIGNED (TREE_TYPE (base
))
1170 || TYPE_MODE (TREE_TYPE (base
)) != TYPE_MODE (integer_type_node
))
1172 /* The default implementation assumes an errno location
1173 declaration is never defined in the current compilation unit. */
1175 && !TREE_STATIC (base
))
1177 else if (TREE_CODE (base
) == MEM_REF
1178 && TREE_CODE (TREE_OPERAND (base
, 0)) == SSA_NAME
)
1180 struct ptr_info_def
*pi
= SSA_NAME_PTR_INFO (TREE_OPERAND (base
, 0));
1181 return !pi
|| pi
->pt
.anything
|| pi
->pt
.nonlocal
;
1186 /* Return the mode for a pointer to a given ADDRSPACE, defaulting to ptr_mode
1187 for the generic address space only. */
1190 default_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1192 gcc_assert (ADDR_SPACE_GENERIC_P (addrspace
));
1196 /* Return the mode for an address in a given ADDRSPACE, defaulting to Pmode
1197 for the generic address space only. */
1200 default_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1202 gcc_assert (ADDR_SPACE_GENERIC_P (addrspace
));
1206 /* Named address space version of valid_pointer_mode. */
1209 default_addr_space_valid_pointer_mode (machine_mode mode
, addr_space_t as
)
1211 if (!ADDR_SPACE_GENERIC_P (as
))
1212 return (mode
== targetm
.addr_space
.pointer_mode (as
)
1213 || mode
== targetm
.addr_space
.address_mode (as
));
1215 return targetm
.valid_pointer_mode (mode
);
1218 /* Some places still assume that all pointer or address modes are the
1219 standard Pmode and ptr_mode. These optimizations become invalid if
1220 the target actually supports multiple different modes. For now,
1221 we disable such optimizations on such targets, using this function. */
1224 target_default_pointer_address_modes_p (void)
1226 if (targetm
.addr_space
.address_mode
!= default_addr_space_address_mode
)
1228 if (targetm
.addr_space
.pointer_mode
!= default_addr_space_pointer_mode
)
1234 /* Named address space version of legitimate_address_p. */
1237 default_addr_space_legitimate_address_p (machine_mode mode
, rtx mem
,
1238 bool strict
, addr_space_t as
)
1240 if (!ADDR_SPACE_GENERIC_P (as
))
1243 return targetm
.legitimate_address_p (mode
, mem
, strict
);
1246 /* Named address space version of LEGITIMIZE_ADDRESS. */
1249 default_addr_space_legitimize_address (rtx x
, rtx oldx
,
1250 machine_mode mode
, addr_space_t as
)
1252 if (!ADDR_SPACE_GENERIC_P (as
))
1255 return targetm
.legitimize_address (x
, oldx
, mode
);
1258 /* The default hook for determining if one named address space is a subset of
1259 another and to return which address space to use as the common address
1263 default_addr_space_subset_p (addr_space_t subset
, addr_space_t superset
)
1265 return (subset
== superset
);
1268 /* The default hook for TARGET_ADDR_SPACE_CONVERT. This hook should never be
1269 called for targets with only a generic address space. */
1272 default_addr_space_convert (rtx op ATTRIBUTE_UNUSED
,
1273 tree from_type ATTRIBUTE_UNUSED
,
1274 tree to_type ATTRIBUTE_UNUSED
)
1280 default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED
)
1285 /* The default implementation of TARGET_MODE_DEPENDENT_ADDRESS_P. */
1288 default_mode_dependent_address_p (const_rtx addr ATTRIBUTE_UNUSED
,
1289 addr_space_t addrspace ATTRIBUTE_UNUSED
)
1295 default_target_option_valid_attribute_p (tree
ARG_UNUSED (fndecl
),
1296 tree
ARG_UNUSED (name
),
1297 tree
ARG_UNUSED (args
),
1298 int ARG_UNUSED (flags
))
1300 warning (OPT_Wattributes
,
1301 "target attribute is not supported on this machine");
1307 default_target_option_pragma_parse (tree
ARG_UNUSED (args
),
1308 tree
ARG_UNUSED (pop_target
))
1310 warning (OPT_Wpragmas
,
1311 "#pragma GCC target is not supported for this machine");
1317 default_target_can_inline_p (tree caller
, tree callee
)
1320 tree callee_opts
= DECL_FUNCTION_SPECIFIC_TARGET (callee
);
1321 tree caller_opts
= DECL_FUNCTION_SPECIFIC_TARGET (caller
);
1323 /* If callee has no option attributes, then it is ok to inline */
1327 /* If caller has no option attributes, but callee does then it is not ok to
1329 else if (!caller_opts
)
1332 /* If both caller and callee have attributes, assume that if the
1333 pointer is different, the two functions have different target
1334 options since build_target_option_node uses a hash table for the
1337 ret
= (callee_opts
== caller_opts
);
1343 # define HAVE_casesi 0
1346 /* If the machine does not have a case insn that compares the bounds,
1347 this means extra overhead for dispatch tables, which raises the
1348 threshold for using them. */
1351 default_case_values_threshold (void)
1353 return (HAVE_casesi
? 4 : 5);
1357 default_have_conditional_execution (void)
1359 #ifdef HAVE_conditional_execution
1360 return HAVE_conditional_execution
;
1366 /* By default we assume that c99 functions are present at the runtime,
1367 but sincos is not. */
1369 default_libc_has_function (enum function_class fn_class
)
1371 if (fn_class
== function_c94
1372 || fn_class
== function_c99_misc
1373 || fn_class
== function_c99_math_complex
)
1380 gnu_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1386 no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1392 default_builtin_tm_load_store (tree
ARG_UNUSED (type
))
1397 /* Compute cost of moving registers to/from memory. */
1400 default_memory_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1401 reg_class_t rclass ATTRIBUTE_UNUSED
,
1402 bool in ATTRIBUTE_UNUSED
)
1404 #ifndef MEMORY_MOVE_COST
1405 return (4 + memory_move_secondary_cost (mode
, (enum reg_class
) rclass
, in
));
1407 return MEMORY_MOVE_COST (mode
, (enum reg_class
) rclass
, in
);
1411 /* Compute cost of moving data from a register of class FROM to one of
1415 default_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1416 reg_class_t from ATTRIBUTE_UNUSED
,
1417 reg_class_t to ATTRIBUTE_UNUSED
)
1419 #ifndef REGISTER_MOVE_COST
1422 return REGISTER_MOVE_COST (mode
, (enum reg_class
) from
, (enum reg_class
) to
);
1426 /* For hooks which use the MOVE_RATIO macro, this gives the legacy default
1427 behaviour. SPEED_P is true if we are compiling for speed. */
1430 get_move_ratio (bool speed_p ATTRIBUTE_UNUSED
)
1432 unsigned int move_ratio
;
1434 move_ratio
= (unsigned int) MOVE_RATIO (speed_p
);
1436 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1438 #else /* No movmem patterns, pick a default. */
1439 move_ratio
= ((speed_p
) ? 15 : 3);
1445 /* Return TRUE if the move_by_pieces/set_by_pieces infrastructure should be
1446 used; return FALSE if the movmem/setmem optab should be expanded, or
1447 a call to memcpy emitted. */
1450 default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT size
,
1451 unsigned int alignment
,
1452 enum by_pieces_operation op
,
1455 unsigned int max_size
= 0;
1456 unsigned int ratio
= 0;
1460 case CLEAR_BY_PIECES
:
1461 max_size
= STORE_MAX_PIECES
;
1462 ratio
= CLEAR_RATIO (speed_p
);
1464 case MOVE_BY_PIECES
:
1465 max_size
= MOVE_MAX_PIECES
;
1466 ratio
= get_move_ratio (speed_p
);
1469 max_size
= STORE_MAX_PIECES
;
1470 ratio
= SET_RATIO (speed_p
);
1472 case STORE_BY_PIECES
:
1473 max_size
= STORE_MAX_PIECES
;
1474 ratio
= get_move_ratio (speed_p
);
1478 return move_by_pieces_ninsns (size
, alignment
, max_size
+ 1) < ratio
;
1482 default_profile_before_prologue (void)
1484 #ifdef PROFILE_BEFORE_PROLOGUE
1491 /* The default implementation of TARGET_PREFERRED_RELOAD_CLASS. */
1494 default_preferred_reload_class (rtx x ATTRIBUTE_UNUSED
,
1497 #ifdef PREFERRED_RELOAD_CLASS
1498 return (reg_class_t
) PREFERRED_RELOAD_CLASS (x
, (enum reg_class
) rclass
);
1504 /* The default implementation of TARGET_OUTPUT_PREFERRED_RELOAD_CLASS. */
1507 default_preferred_output_reload_class (rtx x ATTRIBUTE_UNUSED
,
1513 /* The default implementation of TARGET_PREFERRED_RENAME_CLASS. */
1515 default_preferred_rename_class (reg_class_t rclass ATTRIBUTE_UNUSED
)
1520 /* The default implementation of TARGET_CLASS_LIKELY_SPILLED_P. */
1523 default_class_likely_spilled_p (reg_class_t rclass
)
1525 return (reg_class_size
[(int) rclass
] == 1);
1528 /* The default implementation of TARGET_CLASS_MAX_NREGS. */
1531 default_class_max_nregs (reg_class_t rclass ATTRIBUTE_UNUSED
,
1532 machine_mode mode ATTRIBUTE_UNUSED
)
1534 #ifdef CLASS_MAX_NREGS
1535 return (unsigned char) CLASS_MAX_NREGS ((enum reg_class
) rclass
, mode
);
1537 return ((GET_MODE_SIZE (mode
) + UNITS_PER_WORD
- 1) / UNITS_PER_WORD
);
1541 /* Determine the debugging unwind mechanism for the target. */
1543 enum unwind_info_type
1544 default_debug_unwind_info (void)
1546 /* If the target wants to force the use of dwarf2 unwind info, let it. */
1547 /* ??? Change all users to the hook, then poison this. */
1548 #ifdef DWARF2_FRAME_INFO
1549 if (DWARF2_FRAME_INFO
)
1553 /* Otherwise, only turn it on if dwarf2 debugging is enabled. */
1554 #ifdef DWARF2_DEBUGGING_INFO
1555 if (write_symbols
== DWARF2_DEBUG
|| write_symbols
== VMS_AND_DWARF2_DEBUG
)
1562 /* Determine the correct mode for a Dwarf frame register that represents
1566 default_dwarf_frame_reg_mode (int regno
)
1568 machine_mode save_mode
= reg_raw_mode
[regno
];
1570 if (HARD_REGNO_CALL_PART_CLOBBERED (regno
, save_mode
))
1571 save_mode
= choose_hard_reg_mode (regno
, 1, true);
1575 /* To be used by targets where reg_raw_mode doesn't return the right
1576 mode for registers used in apply_builtin_return and apply_builtin_arg. */
1579 default_get_reg_raw_mode (int regno
)
1581 return reg_raw_mode
[regno
];
1584 /* Return true if a leaf function should stay leaf even with profiling
1588 default_keep_leaf_when_profiled ()
1593 /* Return true if the state of option OPTION should be stored in PCH files
1594 and checked by default_pch_valid_p. Store the option's current state
1598 option_affects_pch_p (int option
, struct cl_option_state
*state
)
1600 if ((cl_options
[option
].flags
& CL_TARGET
) == 0)
1602 if ((cl_options
[option
].flags
& CL_PCH_IGNORE
) != 0)
1604 if (option_flag_var (option
, &global_options
) == &target_flags
)
1605 if (targetm
.check_pch_target_flags
)
1607 return get_option_state (&global_options
, option
, state
);
1610 /* Default version of get_pch_validity.
1611 By default, every flag difference is fatal; that will be mostly right for
1612 most targets, but completely right for very few. */
1615 default_get_pch_validity (size_t *sz
)
1617 struct cl_option_state state
;
1622 if (targetm
.check_pch_target_flags
)
1623 *sz
+= sizeof (target_flags
);
1624 for (i
= 0; i
< cl_options_count
; i
++)
1625 if (option_affects_pch_p (i
, &state
))
1628 result
= r
= XNEWVEC (char, *sz
);
1632 if (targetm
.check_pch_target_flags
)
1634 memcpy (r
, &target_flags
, sizeof (target_flags
));
1635 r
+= sizeof (target_flags
);
1638 for (i
= 0; i
< cl_options_count
; i
++)
1639 if (option_affects_pch_p (i
, &state
))
1641 memcpy (r
, state
.data
, state
.size
);
1648 /* Return a message which says that a PCH file was created with a different
1649 setting of OPTION. */
1652 pch_option_mismatch (const char *option
)
1654 return xasprintf (_("created and used with differing settings of '%s'"),
1658 /* Default version of pch_valid_p. */
1661 default_pch_valid_p (const void *data_p
, size_t len
)
1663 struct cl_option_state state
;
1664 const char *data
= (const char *)data_p
;
1667 /* -fpic and -fpie also usually make a PCH invalid. */
1668 if (data
[0] != flag_pic
)
1669 return _("created and used with different settings of -fpic");
1670 if (data
[1] != flag_pie
)
1671 return _("created and used with different settings of -fpie");
1674 /* Check target_flags. */
1675 if (targetm
.check_pch_target_flags
)
1680 memcpy (&tf
, data
, sizeof (target_flags
));
1681 data
+= sizeof (target_flags
);
1682 len
-= sizeof (target_flags
);
1683 r
= targetm
.check_pch_target_flags (tf
);
1688 for (i
= 0; i
< cl_options_count
; i
++)
1689 if (option_affects_pch_p (i
, &state
))
1691 if (memcmp (data
, state
.data
, state
.size
) != 0)
1692 return pch_option_mismatch (cl_options
[i
].opt_text
);
1700 /* Default version of cstore_mode. */
1703 default_cstore_mode (enum insn_code icode
)
1705 return insn_data
[(int) icode
].operand
[0].mode
;
1708 /* Default version of member_type_forces_blk. */
1711 default_member_type_forces_blk (const_tree
, machine_mode
)
1717 default_load_bounds_for_arg (rtx addr ATTRIBUTE_UNUSED
,
1718 rtx ptr ATTRIBUTE_UNUSED
,
1719 rtx bnd ATTRIBUTE_UNUSED
)
1725 default_store_bounds_for_arg (rtx val ATTRIBUTE_UNUSED
,
1726 rtx addr ATTRIBUTE_UNUSED
,
1727 rtx bounds ATTRIBUTE_UNUSED
,
1728 rtx to ATTRIBUTE_UNUSED
)
1734 default_load_returned_bounds (rtx slot ATTRIBUTE_UNUSED
)
1740 default_store_returned_bounds (rtx slot ATTRIBUTE_UNUSED
,
1741 rtx bounds ATTRIBUTE_UNUSED
)
1746 /* Default version of canonicalize_comparison. */
1749 default_canonicalize_comparison (int *, rtx
*, rtx
*, bool)
1753 /* Default implementation of TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */
1756 default_atomic_assign_expand_fenv (tree
*, tree
*, tree
*)
1760 #ifndef PAD_VARARGS_DOWN
1761 #define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
1764 /* Build an indirect-ref expression over the given TREE, which represents a
1765 piece of a va_arg() expansion. */
1767 build_va_arg_indirect_ref (tree addr
)
1769 addr
= build_simple_mem_ref_loc (EXPR_LOCATION (addr
), addr
);
1773 /* The "standard" implementation of va_arg: read the value from the
1774 current (padded) address and increment by the (padded) size. */
1777 std_gimplify_va_arg_expr (tree valist
, tree type
, gimple_seq
*pre_p
,
1780 tree addr
, t
, type_size
, rounded_size
, valist_tmp
;
1781 unsigned HOST_WIDE_INT align
, boundary
;
1784 /* All of the alignment and movement below is for args-grow-up machines.
1785 As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
1786 implement their own specialized gimplify_va_arg_expr routines. */
1787 if (ARGS_GROW_DOWNWARD
)
1790 indirect
= pass_by_reference (NULL
, TYPE_MODE (type
), type
, false);
1792 type
= build_pointer_type (type
);
1794 align
= PARM_BOUNDARY
/ BITS_PER_UNIT
;
1795 boundary
= targetm
.calls
.function_arg_boundary (TYPE_MODE (type
), type
);
1797 /* When we align parameter on stack for caller, if the parameter
1798 alignment is beyond MAX_SUPPORTED_STACK_ALIGNMENT, it will be
1799 aligned at MAX_SUPPORTED_STACK_ALIGNMENT. We will match callee
1800 here with caller. */
1801 if (boundary
> MAX_SUPPORTED_STACK_ALIGNMENT
)
1802 boundary
= MAX_SUPPORTED_STACK_ALIGNMENT
;
1804 boundary
/= BITS_PER_UNIT
;
1806 /* Hoist the valist value into a temporary for the moment. */
1807 valist_tmp
= get_initialized_tmp_var (valist
, pre_p
, NULL
);
1809 /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
1810 requires greater alignment, we must perform dynamic alignment. */
1811 if (boundary
> align
1812 && !integer_zerop (TYPE_SIZE (type
)))
1814 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1815 fold_build_pointer_plus_hwi (valist_tmp
, boundary
- 1));
1816 gimplify_and_add (t
, pre_p
);
1818 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1819 fold_build2 (BIT_AND_EXPR
, TREE_TYPE (valist
),
1821 build_int_cst (TREE_TYPE (valist
), -boundary
)));
1822 gimplify_and_add (t
, pre_p
);
1827 /* If the actual alignment is less than the alignment of the type,
1828 adjust the type accordingly so that we don't assume strict alignment
1829 when dereferencing the pointer. */
1830 boundary
*= BITS_PER_UNIT
;
1831 if (boundary
< TYPE_ALIGN (type
))
1833 type
= build_variant_type_copy (type
);
1834 TYPE_ALIGN (type
) = boundary
;
1837 /* Compute the rounded size of the type. */
1838 type_size
= size_in_bytes (type
);
1839 rounded_size
= round_up (type_size
, align
);
1841 /* Reduce rounded_size so it's sharable with the postqueue. */
1842 gimplify_expr (&rounded_size
, pre_p
, post_p
, is_gimple_val
, fb_rvalue
);
1846 if (PAD_VARARGS_DOWN
&& !integer_zerop (rounded_size
))
1848 /* Small args are padded downward. */
1849 t
= fold_build2_loc (input_location
, GT_EXPR
, sizetype
,
1850 rounded_size
, size_int (align
));
1851 t
= fold_build3 (COND_EXPR
, sizetype
, t
, size_zero_node
,
1852 size_binop (MINUS_EXPR
, rounded_size
, type_size
));
1853 addr
= fold_build_pointer_plus (addr
, t
);
1856 /* Compute new value for AP. */
1857 t
= fold_build_pointer_plus (valist_tmp
, rounded_size
);
1858 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist
, t
);
1859 gimplify_and_add (t
, pre_p
);
1861 addr
= fold_convert (build_pointer_type (type
), addr
);
1864 addr
= build_va_arg_indirect_ref (addr
);
1866 return build_va_arg_indirect_ref (addr
);
1870 default_chkp_bound_type (void)
1872 tree res
= make_node (POINTER_BOUNDS_TYPE
);
1873 TYPE_PRECISION (res
) = TYPE_PRECISION (size_type_node
) * 2;
1874 TYPE_NAME (res
) = get_identifier ("__bounds_type");
1875 SET_TYPE_MODE (res
, targetm
.chkp_bound_mode ());
1881 default_chkp_bound_mode (void)
1887 default_builtin_chkp_function (unsigned int fcode ATTRIBUTE_UNUSED
)
1893 default_chkp_function_value_bounds (const_tree ret_type ATTRIBUTE_UNUSED
,
1894 const_tree fn_decl_or_type ATTRIBUTE_UNUSED
,
1895 bool outgoing ATTRIBUTE_UNUSED
)
1901 default_chkp_make_bounds_constant (HOST_WIDE_INT lb ATTRIBUTE_UNUSED
,
1902 HOST_WIDE_INT ub ATTRIBUTE_UNUSED
)
1908 default_chkp_initialize_bounds (tree var ATTRIBUTE_UNUSED
,
1909 tree lb ATTRIBUTE_UNUSED
,
1910 tree ub ATTRIBUTE_UNUSED
,
1911 tree
*stmts ATTRIBUTE_UNUSED
)
1917 default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED
,
1918 enum machine_mode mode ATTRIBUTE_UNUSED
,
1919 tree type ATTRIBUTE_UNUSED
,
1920 int *pretend_arg_size ATTRIBUTE_UNUSED
,
1921 int second_time ATTRIBUTE_UNUSED
)
1925 /* An implementation of TARGET_CAN_USE_DOLOOP_P for targets that do
1926 not support nested low-overhead loops. */
1929 can_use_doloop_if_innermost (const widest_int
&, const widest_int
&,
1930 unsigned int loop_depth
, bool)
1932 return loop_depth
== 1;
1935 #include "gt-targhooks.h"