1 /* Default target hook functions.
2 Copyright (C) 2003-2014 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"
56 #include "stor-layout.h"
60 #include "diagnostic-core.h"
64 #include "hard-reg-set.h"
69 #include "target-def.h"
72 #include "insn-codes.h"
77 #include "tree-ssa-alias.h"
78 #include "gimple-expr.h"
80 #include "stringpool.h"
81 #include "tree-ssanames.h"
85 default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED
,
86 rtx addr ATTRIBUTE_UNUSED
,
87 bool strict ATTRIBUTE_UNUSED
)
89 #ifdef GO_IF_LEGITIMATE_ADDRESS
90 /* Defer to the old implementation using a goto. */
92 return strict_memory_address_p (mode
, addr
);
94 return memory_address_p (mode
, addr
);
101 default_external_libcall (rtx fun ATTRIBUTE_UNUSED
)
103 #ifdef ASM_OUTPUT_EXTERNAL_LIBCALL
104 ASM_OUTPUT_EXTERNAL_LIBCALL (asm_out_file
, fun
);
109 default_unspec_may_trap_p (const_rtx x
, unsigned flags
)
113 /* Any floating arithmetic may trap. */
114 if ((SCALAR_FLOAT_MODE_P (GET_MODE (x
)) && flag_trapping_math
))
117 for (i
= 0; i
< XVECLEN (x
, 0); ++i
)
119 if (may_trap_p_1 (XVECEXP (x
, 0, i
), flags
))
127 default_promote_function_mode (const_tree type ATTRIBUTE_UNUSED
,
129 int *punsignedp ATTRIBUTE_UNUSED
,
130 const_tree funtype ATTRIBUTE_UNUSED
,
131 int for_return ATTRIBUTE_UNUSED
)
133 if (type
!= NULL_TREE
&& for_return
== 2)
134 return promote_mode (type
, mode
, punsignedp
);
139 default_promote_function_mode_always_promote (const_tree type
,
142 const_tree funtype ATTRIBUTE_UNUSED
,
143 int for_return ATTRIBUTE_UNUSED
)
145 return promote_mode (type
, mode
, punsignedp
);
149 default_cc_modes_compatible (machine_mode m1
, machine_mode m2
)
157 default_return_in_memory (const_tree type
,
158 const_tree fntype ATTRIBUTE_UNUSED
)
160 return (TYPE_MODE (type
) == BLKmode
);
164 default_legitimize_address (rtx x
, rtx orig_x ATTRIBUTE_UNUSED
,
165 machine_mode mode ATTRIBUTE_UNUSED
)
171 default_legitimize_address_displacement (rtx
*disp ATTRIBUTE_UNUSED
,
172 rtx
*offset ATTRIBUTE_UNUSED
,
173 machine_mode mode ATTRIBUTE_UNUSED
)
179 default_expand_builtin_saveregs (void)
181 error ("__builtin_saveregs not supported by this target");
186 default_setup_incoming_varargs (cumulative_args_t ca ATTRIBUTE_UNUSED
,
187 machine_mode mode ATTRIBUTE_UNUSED
,
188 tree type ATTRIBUTE_UNUSED
,
189 int *pretend_arg_size ATTRIBUTE_UNUSED
,
190 int second_time ATTRIBUTE_UNUSED
)
194 /* The default implementation of TARGET_BUILTIN_SETJMP_FRAME_VALUE. */
197 default_builtin_setjmp_frame_value (void)
199 return virtual_stack_vars_rtx
;
202 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns false. */
205 hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t ca ATTRIBUTE_UNUSED
)
211 default_pretend_outgoing_varargs_named (cumulative_args_t ca ATTRIBUTE_UNUSED
)
213 return (targetm
.calls
.setup_incoming_varargs
214 != default_setup_incoming_varargs
);
218 default_eh_return_filter_mode (void)
220 return targetm
.unwind_word_mode ();
224 default_libgcc_cmp_return_mode (void)
230 default_libgcc_shift_count_mode (void)
236 default_unwind_word_mode (void)
241 /* The default implementation of TARGET_SHIFT_TRUNCATION_MASK. */
243 unsigned HOST_WIDE_INT
244 default_shift_truncation_mask (machine_mode mode
)
246 return SHIFT_COUNT_TRUNCATED
? GET_MODE_BITSIZE (mode
) - 1 : 0;
249 /* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */
252 default_min_divisions_for_recip_mul (machine_mode mode ATTRIBUTE_UNUSED
)
254 return have_insn_for (DIV
, mode
) ? 3 : 2;
257 /* The default implementation of TARGET_MODE_REP_EXTENDED. */
260 default_mode_rep_extended (machine_mode mode ATTRIBUTE_UNUSED
,
261 machine_mode mode_rep ATTRIBUTE_UNUSED
)
266 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true. */
269 hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t a ATTRIBUTE_UNUSED
)
274 /* Return machine mode for non-standard suffix
275 or VOIDmode if non-standard suffixes are unsupported. */
277 default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED
)
282 /* The generic C++ ABI specifies this is a 64-bit value. */
284 default_cxx_guard_type (void)
286 return long_long_integer_type_node
;
289 /* Returns the size of the cookie to use when allocating an array
290 whose elements have the indicated TYPE. Assumes that it is already
291 known that a cookie is needed. */
294 default_cxx_get_cookie_size (tree type
)
298 /* We need to allocate an additional max (sizeof (size_t), alignof
299 (true_type)) bytes. */
303 sizetype_size
= size_in_bytes (sizetype
);
304 type_align
= size_int (TYPE_ALIGN_UNIT (type
));
305 if (tree_int_cst_lt (type_align
, sizetype_size
))
306 cookie_size
= sizetype_size
;
308 cookie_size
= type_align
;
313 /* Return true if a parameter must be passed by reference. This version
314 of the TARGET_PASS_BY_REFERENCE hook uses just MUST_PASS_IN_STACK. */
317 hook_pass_by_reference_must_pass_in_stack (cumulative_args_t c ATTRIBUTE_UNUSED
,
318 machine_mode mode ATTRIBUTE_UNUSED
, const_tree type ATTRIBUTE_UNUSED
,
319 bool named_arg ATTRIBUTE_UNUSED
)
321 return targetm
.calls
.must_pass_in_stack (mode
, type
);
324 /* Return true if a parameter follows callee copies conventions. This
325 version of the hook is true for all named arguments. */
328 hook_callee_copies_named (cumulative_args_t ca ATTRIBUTE_UNUSED
,
329 machine_mode mode ATTRIBUTE_UNUSED
,
330 const_tree type ATTRIBUTE_UNUSED
, bool named
)
335 /* Emit to STREAM the assembler syntax for insn operand X. */
338 default_print_operand (FILE *stream ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
339 int code ATTRIBUTE_UNUSED
)
342 PRINT_OPERAND (stream
, x
, code
);
348 /* Emit to STREAM the assembler syntax for an insn operand whose memory
352 default_print_operand_address (FILE *stream ATTRIBUTE_UNUSED
,
353 rtx x ATTRIBUTE_UNUSED
)
355 #ifdef PRINT_OPERAND_ADDRESS
356 PRINT_OPERAND_ADDRESS (stream
, x
);
362 /* Return true if CODE is a valid punctuation character for the
363 `print_operand' hook. */
366 default_print_operand_punct_valid_p (unsigned char code ATTRIBUTE_UNUSED
)
368 #ifdef PRINT_OPERAND_PUNCT_VALID_P
369 return PRINT_OPERAND_PUNCT_VALID_P (code
);
375 /* The default implementation of TARGET_MANGLE_ASSEMBLER_NAME. */
377 default_mangle_assembler_name (const char *name ATTRIBUTE_UNUSED
)
379 const char *skipped
= name
+ (*name
== '*' ? 1 : 0);
380 const char *stripped
= targetm
.strip_name_encoding (skipped
);
381 if (*name
!= '*' && user_label_prefix
[0])
382 stripped
= ACONCAT ((user_label_prefix
, stripped
, NULL
));
383 return get_identifier (stripped
);
386 /* True if MODE is valid for the target. By "valid", we mean able to
387 be manipulated in non-trivial ways. In particular, this means all
388 the arithmetic is supported.
390 By default we guess this means that any C type is supported. If
391 we can't map the mode back to a type that would be available in C,
392 then reject it. Special case, here, is the double-word arithmetic
393 supported by optabs.c. */
396 default_scalar_mode_supported_p (machine_mode mode
)
398 int precision
= GET_MODE_PRECISION (mode
);
400 switch (GET_MODE_CLASS (mode
))
402 case MODE_PARTIAL_INT
:
404 if (precision
== CHAR_TYPE_SIZE
)
406 if (precision
== SHORT_TYPE_SIZE
)
408 if (precision
== INT_TYPE_SIZE
)
410 if (precision
== LONG_TYPE_SIZE
)
412 if (precision
== LONG_LONG_TYPE_SIZE
)
414 if (precision
== 2 * BITS_PER_WORD
)
419 if (precision
== FLOAT_TYPE_SIZE
)
421 if (precision
== DOUBLE_TYPE_SIZE
)
423 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
427 case MODE_DECIMAL_FLOAT
:
439 /* Return true if libgcc supports floating-point mode MODE (known to
440 be supported as a scalar mode). */
443 default_libgcc_floating_mode_supported_p (machine_mode mode
)
466 /* Make some target macros useable by target-independent code. */
468 targhook_words_big_endian (void)
470 return !!WORDS_BIG_ENDIAN
;
474 targhook_float_words_big_endian (void)
476 return !!FLOAT_WORDS_BIG_ENDIAN
;
479 /* True if the target supports floating-point exceptions and rounding
483 default_float_exceptions_rounding_supported_p (void)
492 /* True if the target supports decimal floating point. */
495 default_decimal_float_supported_p (void)
497 return ENABLE_DECIMAL_FLOAT
;
500 /* True if the target supports fixed-point arithmetic. */
503 default_fixed_point_supported_p (void)
505 return ENABLE_FIXED_POINT
;
508 /* True if the target supports GNU indirect functions. */
511 default_has_ifunc_p (void)
513 return HAVE_GNU_INDIRECT_FUNCTION
;
516 /* NULL if INSN insn is valid within a low-overhead loop, otherwise returns
519 This function checks whether a given INSN is valid within a low-overhead
520 loop. If INSN is invalid it returns the reason for that, otherwise it
521 returns NULL. A called function may clobber any special registers required
522 for low-overhead looping. Additionally, some targets (eg, PPC) use the count
523 register for branch on table instructions. We reject the doloop pattern in
527 default_invalid_within_doloop (const rtx_insn
*insn
)
530 return "Function call in loop.";
532 if (tablejump_p (insn
, NULL
, NULL
) || computed_jump_p (insn
))
533 return "Computed branch in the loop.";
538 /* Mapping of builtin functions to vectorized variants. */
541 default_builtin_vectorized_function (tree fndecl ATTRIBUTE_UNUSED
,
542 tree type_out ATTRIBUTE_UNUSED
,
543 tree type_in ATTRIBUTE_UNUSED
)
548 /* Vectorized conversion. */
551 default_builtin_vectorized_conversion (unsigned int code ATTRIBUTE_UNUSED
,
552 tree dest_type ATTRIBUTE_UNUSED
,
553 tree src_type ATTRIBUTE_UNUSED
)
558 /* Default vectorizer cost model values. */
561 default_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost
,
563 int misalign ATTRIBUTE_UNUSED
)
567 switch (type_of_cost
)
577 case cond_branch_not_taken
:
579 case vec_promote_demote
:
583 case unaligned_store
:
586 case cond_branch_taken
:
590 elements
= TYPE_VECTOR_SUBPARTS (vectype
);
591 return elements
/ 2 + 1;
601 default_builtin_reciprocal (unsigned int fn ATTRIBUTE_UNUSED
,
602 bool md_fn ATTRIBUTE_UNUSED
,
603 bool sqrt ATTRIBUTE_UNUSED
)
609 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false (
610 cumulative_args_t ca ATTRIBUTE_UNUSED
,
611 machine_mode mode ATTRIBUTE_UNUSED
,
612 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
618 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true (
619 cumulative_args_t ca ATTRIBUTE_UNUSED
,
620 machine_mode mode ATTRIBUTE_UNUSED
,
621 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
627 hook_int_CUMULATIVE_ARGS_mode_tree_bool_0 (
628 cumulative_args_t ca ATTRIBUTE_UNUSED
,
629 machine_mode mode ATTRIBUTE_UNUSED
,
630 tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
636 default_function_arg_advance (cumulative_args_t ca ATTRIBUTE_UNUSED
,
637 machine_mode mode ATTRIBUTE_UNUSED
,
638 const_tree type ATTRIBUTE_UNUSED
,
639 bool named ATTRIBUTE_UNUSED
)
645 default_function_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
646 machine_mode mode ATTRIBUTE_UNUSED
,
647 const_tree type ATTRIBUTE_UNUSED
,
648 bool named ATTRIBUTE_UNUSED
)
654 default_function_incoming_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
655 machine_mode mode ATTRIBUTE_UNUSED
,
656 const_tree type ATTRIBUTE_UNUSED
,
657 bool named ATTRIBUTE_UNUSED
)
663 default_function_arg_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
664 const_tree type ATTRIBUTE_UNUSED
)
666 return PARM_BOUNDARY
;
670 default_function_arg_round_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
671 const_tree type ATTRIBUTE_UNUSED
)
673 return PARM_BOUNDARY
;
677 hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED
)
682 hook_invalid_arg_for_unprototyped_fn (
683 const_tree typelist ATTRIBUTE_UNUSED
,
684 const_tree funcdecl ATTRIBUTE_UNUSED
,
685 const_tree val ATTRIBUTE_UNUSED
)
690 /* Initialize the stack protection decls. */
692 /* Stack protection related decls living in libgcc. */
693 static GTY(()) tree stack_chk_guard_decl
;
696 default_stack_protect_guard (void)
698 tree t
= stack_chk_guard_decl
;
704 t
= build_decl (UNKNOWN_LOCATION
,
705 VAR_DECL
, get_identifier ("__stack_chk_guard"),
709 DECL_EXTERNAL (t
) = 1;
711 TREE_THIS_VOLATILE (t
) = 1;
712 DECL_ARTIFICIAL (t
) = 1;
713 DECL_IGNORED_P (t
) = 1;
715 /* Do not share RTL as the declaration is visible outside of
718 RTX_FLAG (x
, used
) = 1;
720 stack_chk_guard_decl
= t
;
726 static GTY(()) tree stack_chk_fail_decl
;
729 default_external_stack_protect_fail (void)
731 tree t
= stack_chk_fail_decl
;
735 t
= build_function_type_list (void_type_node
, NULL_TREE
);
736 t
= build_decl (UNKNOWN_LOCATION
,
737 FUNCTION_DECL
, get_identifier ("__stack_chk_fail"), t
);
740 DECL_EXTERNAL (t
) = 1;
742 TREE_THIS_VOLATILE (t
) = 1;
743 TREE_NOTHROW (t
) = 1;
744 DECL_ARTIFICIAL (t
) = 1;
745 DECL_IGNORED_P (t
) = 1;
746 DECL_VISIBILITY (t
) = VISIBILITY_DEFAULT
;
747 DECL_VISIBILITY_SPECIFIED (t
) = 1;
749 stack_chk_fail_decl
= t
;
752 return build_call_expr (t
, 0);
756 default_hidden_stack_protect_fail (void)
758 #ifndef HAVE_GAS_HIDDEN
759 return default_external_stack_protect_fail ();
761 tree t
= stack_chk_fail_decl
;
764 return default_external_stack_protect_fail ();
768 t
= build_function_type_list (void_type_node
, NULL_TREE
);
769 t
= build_decl (UNKNOWN_LOCATION
, FUNCTION_DECL
,
770 get_identifier ("__stack_chk_fail_local"), t
);
773 DECL_EXTERNAL (t
) = 1;
775 TREE_THIS_VOLATILE (t
) = 1;
776 TREE_NOTHROW (t
) = 1;
777 DECL_ARTIFICIAL (t
) = 1;
778 DECL_IGNORED_P (t
) = 1;
779 DECL_VISIBILITY_SPECIFIED (t
) = 1;
780 DECL_VISIBILITY (t
) = VISIBILITY_HIDDEN
;
782 stack_chk_fail_decl
= t
;
785 return build_call_expr (t
, 0);
790 hook_bool_const_rtx_commutative_p (const_rtx x
,
791 int outer_code ATTRIBUTE_UNUSED
)
793 return COMMUTATIVE_P (x
);
797 default_function_value (const_tree ret_type ATTRIBUTE_UNUSED
,
798 const_tree fn_decl_or_type
,
799 bool outgoing ATTRIBUTE_UNUSED
)
801 /* The old interface doesn't handle receiving the function type. */
803 && !DECL_P (fn_decl_or_type
))
804 fn_decl_or_type
= NULL
;
806 #ifdef FUNCTION_VALUE
807 return FUNCTION_VALUE (ret_type
, fn_decl_or_type
);
814 default_libcall_value (machine_mode mode ATTRIBUTE_UNUSED
,
815 const_rtx fun ATTRIBUTE_UNUSED
)
818 return LIBCALL_VALUE (mode
);
824 /* The default hook for TARGET_FUNCTION_VALUE_REGNO_P. */
827 default_function_value_regno_p (const unsigned int regno ATTRIBUTE_UNUSED
)
829 #ifdef FUNCTION_VALUE_REGNO_P
830 return FUNCTION_VALUE_REGNO_P (regno
);
837 default_internal_arg_pointer (void)
839 /* If the reg that the virtual arg pointer will be translated into is
840 not a fixed reg or is the stack pointer, make a copy of the virtual
841 arg pointer, and address parms via the copy. The frame pointer is
842 considered fixed even though it is not marked as such. */
843 if ((ARG_POINTER_REGNUM
== STACK_POINTER_REGNUM
844 || ! (fixed_regs
[ARG_POINTER_REGNUM
]
845 || ARG_POINTER_REGNUM
== FRAME_POINTER_REGNUM
)))
846 return copy_to_reg (virtual_incoming_args_rtx
);
848 return virtual_incoming_args_rtx
;
852 default_static_chain (const_tree
ARG_UNUSED (fndecl_or_type
), bool incoming_p
)
856 #ifdef STATIC_CHAIN_INCOMING_REGNUM
857 return gen_rtx_REG (Pmode
, STATIC_CHAIN_INCOMING_REGNUM
);
861 #ifdef STATIC_CHAIN_REGNUM
862 return gen_rtx_REG (Pmode
, STATIC_CHAIN_REGNUM
);
866 static bool issued_error
;
870 sorry ("nested functions not supported on this target");
873 /* It really doesn't matter what we return here, so long at it
874 doesn't cause the rest of the compiler to crash. */
875 return gen_rtx_MEM (Pmode
, stack_pointer_rtx
);
880 default_trampoline_init (rtx
ARG_UNUSED (m_tramp
), tree
ARG_UNUSED (t_func
),
881 rtx
ARG_UNUSED (r_chain
))
883 sorry ("nested function trampolines not supported on this target");
887 default_return_pops_args (tree fundecl ATTRIBUTE_UNUSED
,
888 tree funtype ATTRIBUTE_UNUSED
,
889 int size ATTRIBUTE_UNUSED
)
895 default_branch_target_register_class (void)
907 default_register_priority (int hard_regno ATTRIBUTE_UNUSED
)
913 default_register_usage_leveling_p (void)
919 default_different_addr_displacement_p (void)
925 default_secondary_reload (bool in_p ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
926 reg_class_t reload_class_i ATTRIBUTE_UNUSED
,
927 machine_mode reload_mode ATTRIBUTE_UNUSED
,
928 secondary_reload_info
*sri
)
930 enum reg_class rclass
= NO_REGS
;
931 enum reg_class reload_class
= (enum reg_class
) reload_class_i
;
933 if (sri
->prev_sri
&& sri
->prev_sri
->t_icode
!= CODE_FOR_nothing
)
935 sri
->icode
= sri
->prev_sri
->t_icode
;
938 #ifdef SECONDARY_INPUT_RELOAD_CLASS
940 rclass
= SECONDARY_INPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
942 #ifdef SECONDARY_OUTPUT_RELOAD_CLASS
944 rclass
= SECONDARY_OUTPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
946 if (rclass
!= NO_REGS
)
949 = direct_optab_handler (in_p
? reload_in_optab
: reload_out_optab
,
952 if (icode
!= CODE_FOR_nothing
953 && !insn_operand_matches (icode
, in_p
, x
))
954 icode
= CODE_FOR_nothing
;
955 else if (icode
!= CODE_FOR_nothing
)
957 const char *insn_constraint
, *scratch_constraint
;
958 enum reg_class insn_class
, scratch_class
;
960 gcc_assert (insn_data
[(int) icode
].n_operands
== 3);
961 insn_constraint
= insn_data
[(int) icode
].operand
[!in_p
].constraint
;
962 if (!*insn_constraint
)
963 insn_class
= ALL_REGS
;
968 gcc_assert (*insn_constraint
== '=');
971 insn_class
= (reg_class_for_constraint
972 (lookup_constraint (insn_constraint
)));
973 gcc_assert (insn_class
!= NO_REGS
);
976 scratch_constraint
= insn_data
[(int) icode
].operand
[2].constraint
;
977 /* The scratch register's constraint must start with "=&",
978 except for an input reload, where only "=" is necessary,
979 and where it might be beneficial to re-use registers from
981 gcc_assert (scratch_constraint
[0] == '='
982 && (in_p
|| scratch_constraint
[1] == '&'));
983 scratch_constraint
++;
984 if (*scratch_constraint
== '&')
985 scratch_constraint
++;
986 scratch_class
= (reg_class_for_constraint
987 (lookup_constraint (scratch_constraint
)));
989 if (reg_class_subset_p (reload_class
, insn_class
))
991 gcc_assert (scratch_class
== rclass
);
998 if (rclass
== NO_REGS
)
1001 sri
->t_icode
= icode
;
1006 /* By default, if flag_pic is true, then neither local nor global relocs
1007 should be placed in readonly memory. */
1010 default_reloc_rw_mask (void)
1012 return flag_pic
? 3 : 0;
1015 /* By default, do no modification. */
1016 tree
default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED
,
1022 /* Default to natural alignment for vector types. */
1024 default_vector_alignment (const_tree type
)
1026 return tree_to_shwi (TYPE_SIZE (type
));
1030 default_builtin_vector_alignment_reachable (const_tree type
, bool is_packed
)
1035 /* Assuming that types whose size is > pointer-size are not guaranteed to be
1036 naturally aligned. */
1037 if (tree_int_cst_compare (TYPE_SIZE (type
), bitsize_int (POINTER_SIZE
)) > 0)
1040 /* Assuming that types whose size is <= pointer-size
1041 are naturally aligned. */
1045 /* By default, assume that a target supports any factor of misalignment
1046 memory access if it supports movmisalign patten.
1047 is_packed is true if the memory access is defined in a packed struct. */
1049 default_builtin_support_vector_misalignment (machine_mode mode
,
1057 if (optab_handler (movmisalign_optab
, mode
) != CODE_FOR_nothing
)
1062 /* By default, only attempt to parallelize bitwise operations, and
1063 possibly adds/subtracts using bit-twiddling. */
1066 default_preferred_simd_mode (machine_mode mode ATTRIBUTE_UNUSED
)
1071 /* By default only the size derived from the preferred vector mode
1075 default_autovectorize_vector_sizes (void)
1080 /* By default, the cost model accumulates three separate costs (prologue,
1081 loop body, and epilogue) for a vectorized loop or block. So allocate an
1082 array of three unsigned ints, set it to zero, and return its address. */
1085 default_init_cost (struct loop
*loop_info ATTRIBUTE_UNUSED
)
1087 unsigned *cost
= XNEWVEC (unsigned, 3);
1088 cost
[vect_prologue
] = cost
[vect_body
] = cost
[vect_epilogue
] = 0;
1092 /* By default, the cost model looks up the cost of the given statement
1093 kind and mode, multiplies it by the occurrence count, accumulates
1094 it into the cost specified by WHERE, and returns the cost added. */
1097 default_add_stmt_cost (void *data
, int count
, enum vect_cost_for_stmt kind
,
1098 struct _stmt_vec_info
*stmt_info
, int misalign
,
1099 enum vect_cost_model_location where
)
1101 unsigned *cost
= (unsigned *) data
;
1102 unsigned retval
= 0;
1104 tree vectype
= stmt_info
? stmt_vectype (stmt_info
) : NULL_TREE
;
1105 int stmt_cost
= targetm
.vectorize
.builtin_vectorization_cost (kind
, vectype
,
1107 /* Statements in an inner loop relative to the loop being
1108 vectorized are weighted more heavily. The value here is
1109 arbitrary and could potentially be improved with analysis. */
1110 if (where
== vect_body
&& stmt_info
&& stmt_in_inner_loop_p (stmt_info
))
1111 count
*= 50; /* FIXME. */
1113 retval
= (unsigned) (count
* stmt_cost
);
1114 cost
[where
] += retval
;
1119 /* By default, the cost model just returns the accumulated costs. */
1122 default_finish_cost (void *data
, unsigned *prologue_cost
,
1123 unsigned *body_cost
, unsigned *epilogue_cost
)
1125 unsigned *cost
= (unsigned *) data
;
1126 *prologue_cost
= cost
[vect_prologue
];
1127 *body_cost
= cost
[vect_body
];
1128 *epilogue_cost
= cost
[vect_epilogue
];
1131 /* Free the cost data. */
1134 default_destroy_cost_data (void *data
)
1139 /* Determine whether or not a pointer mode is valid. Assume defaults
1140 of ptr_mode or Pmode - can be overridden. */
1142 default_valid_pointer_mode (machine_mode mode
)
1144 return (mode
== ptr_mode
|| mode
== Pmode
);
1147 /* Determine whether the memory reference specified by REF may alias
1148 the C libraries errno location. */
1150 default_ref_may_alias_errno (ao_ref
*ref
)
1152 tree base
= ao_ref_base (ref
);
1153 /* The default implementation assumes the errno location is
1154 a declaration of type int or is always accessed via a
1155 pointer to int. We assume that accesses to errno are
1156 not deliberately obfuscated (even in conforming ways). */
1157 if (TYPE_UNSIGNED (TREE_TYPE (base
))
1158 || TYPE_MODE (TREE_TYPE (base
)) != TYPE_MODE (integer_type_node
))
1160 /* The default implementation assumes an errno location
1161 declaration is never defined in the current compilation unit. */
1163 && !TREE_STATIC (base
))
1165 else if (TREE_CODE (base
) == MEM_REF
1166 && TREE_CODE (TREE_OPERAND (base
, 0)) == SSA_NAME
)
1168 struct ptr_info_def
*pi
= SSA_NAME_PTR_INFO (TREE_OPERAND (base
, 0));
1169 return !pi
|| pi
->pt
.anything
|| pi
->pt
.nonlocal
;
1174 /* Return the mode for a pointer to a given ADDRSPACE, defaulting to ptr_mode
1175 for the generic address space only. */
1178 default_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1180 gcc_assert (ADDR_SPACE_GENERIC_P (addrspace
));
1184 /* Return the mode for an address in a given ADDRSPACE, defaulting to Pmode
1185 for the generic address space only. */
1188 default_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1190 gcc_assert (ADDR_SPACE_GENERIC_P (addrspace
));
1194 /* Named address space version of valid_pointer_mode. */
1197 default_addr_space_valid_pointer_mode (machine_mode mode
, addr_space_t as
)
1199 if (!ADDR_SPACE_GENERIC_P (as
))
1200 return (mode
== targetm
.addr_space
.pointer_mode (as
)
1201 || mode
== targetm
.addr_space
.address_mode (as
));
1203 return targetm
.valid_pointer_mode (mode
);
1206 /* Some places still assume that all pointer or address modes are the
1207 standard Pmode and ptr_mode. These optimizations become invalid if
1208 the target actually supports multiple different modes. For now,
1209 we disable such optimizations on such targets, using this function. */
1212 target_default_pointer_address_modes_p (void)
1214 if (targetm
.addr_space
.address_mode
!= default_addr_space_address_mode
)
1216 if (targetm
.addr_space
.pointer_mode
!= default_addr_space_pointer_mode
)
1222 /* Named address space version of legitimate_address_p. */
1225 default_addr_space_legitimate_address_p (machine_mode mode
, rtx mem
,
1226 bool strict
, addr_space_t as
)
1228 if (!ADDR_SPACE_GENERIC_P (as
))
1231 return targetm
.legitimate_address_p (mode
, mem
, strict
);
1234 /* Named address space version of LEGITIMIZE_ADDRESS. */
1237 default_addr_space_legitimize_address (rtx x
, rtx oldx
,
1238 machine_mode mode
, addr_space_t as
)
1240 if (!ADDR_SPACE_GENERIC_P (as
))
1243 return targetm
.legitimize_address (x
, oldx
, mode
);
1246 /* The default hook for determining if one named address space is a subset of
1247 another and to return which address space to use as the common address
1251 default_addr_space_subset_p (addr_space_t subset
, addr_space_t superset
)
1253 return (subset
== superset
);
1256 /* The default hook for TARGET_ADDR_SPACE_CONVERT. This hook should never be
1257 called for targets with only a generic address space. */
1260 default_addr_space_convert (rtx op ATTRIBUTE_UNUSED
,
1261 tree from_type ATTRIBUTE_UNUSED
,
1262 tree to_type ATTRIBUTE_UNUSED
)
1268 default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED
)
1273 /* The default implementation of TARGET_MODE_DEPENDENT_ADDRESS_P. */
1276 default_mode_dependent_address_p (const_rtx addr ATTRIBUTE_UNUSED
,
1277 addr_space_t addrspace ATTRIBUTE_UNUSED
)
1283 default_target_option_valid_attribute_p (tree
ARG_UNUSED (fndecl
),
1284 tree
ARG_UNUSED (name
),
1285 tree
ARG_UNUSED (args
),
1286 int ARG_UNUSED (flags
))
1288 warning (OPT_Wattributes
,
1289 "target attribute is not supported on this machine");
1295 default_target_option_pragma_parse (tree
ARG_UNUSED (args
),
1296 tree
ARG_UNUSED (pop_target
))
1298 warning (OPT_Wpragmas
,
1299 "#pragma GCC target is not supported for this machine");
1305 default_target_can_inline_p (tree caller
, tree callee
)
1308 tree callee_opts
= DECL_FUNCTION_SPECIFIC_TARGET (callee
);
1309 tree caller_opts
= DECL_FUNCTION_SPECIFIC_TARGET (caller
);
1311 /* If callee has no option attributes, then it is ok to inline */
1315 /* If caller has no option attributes, but callee does then it is not ok to
1317 else if (!caller_opts
)
1320 /* If both caller and callee have attributes, assume that if the
1321 pointer is different, the two functions have different target
1322 options since build_target_option_node uses a hash table for the
1325 ret
= (callee_opts
== caller_opts
);
1331 # define HAVE_casesi 0
1334 /* If the machine does not have a case insn that compares the bounds,
1335 this means extra overhead for dispatch tables, which raises the
1336 threshold for using them. */
1339 default_case_values_threshold (void)
1341 return (HAVE_casesi
? 4 : 5);
1345 default_have_conditional_execution (void)
1347 #ifdef HAVE_conditional_execution
1348 return HAVE_conditional_execution
;
1354 /* By default we assume that c99 functions are present at the runtime,
1355 but sincos is not. */
1357 default_libc_has_function (enum function_class fn_class
)
1359 if (fn_class
== function_c94
1360 || fn_class
== function_c99_misc
1361 || fn_class
== function_c99_math_complex
)
1368 gnu_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1374 no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1380 default_builtin_tm_load_store (tree
ARG_UNUSED (type
))
1385 /* Compute cost of moving registers to/from memory. */
1388 default_memory_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1389 reg_class_t rclass ATTRIBUTE_UNUSED
,
1390 bool in ATTRIBUTE_UNUSED
)
1392 #ifndef MEMORY_MOVE_COST
1393 return (4 + memory_move_secondary_cost (mode
, (enum reg_class
) rclass
, in
));
1395 return MEMORY_MOVE_COST (mode
, (enum reg_class
) rclass
, in
);
1399 /* Compute cost of moving data from a register of class FROM to one of
1403 default_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1404 reg_class_t from ATTRIBUTE_UNUSED
,
1405 reg_class_t to ATTRIBUTE_UNUSED
)
1407 #ifndef REGISTER_MOVE_COST
1410 return REGISTER_MOVE_COST (mode
, (enum reg_class
) from
, (enum reg_class
) to
);
1414 /* For hooks which use the MOVE_RATIO macro, this gives the legacy default
1415 behaviour. SPEED_P is true if we are compiling for speed. */
1418 get_move_ratio (bool speed_p ATTRIBUTE_UNUSED
)
1420 unsigned int move_ratio
;
1422 move_ratio
= (unsigned int) MOVE_RATIO (speed_p
);
1424 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1426 #else /* No movmem patterns, pick a default. */
1427 move_ratio
= ((speed_p
) ? 15 : 3);
1433 /* Return TRUE if the move_by_pieces/set_by_pieces infrastructure should be
1434 used; return FALSE if the movmem/setmem optab should be expanded, or
1435 a call to memcpy emitted. */
1438 default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT size
,
1439 unsigned int alignment
,
1440 enum by_pieces_operation op
,
1443 unsigned int max_size
= 0;
1444 unsigned int ratio
= 0;
1448 case CLEAR_BY_PIECES
:
1449 max_size
= STORE_MAX_PIECES
;
1450 ratio
= CLEAR_RATIO (speed_p
);
1452 case MOVE_BY_PIECES
:
1453 max_size
= MOVE_MAX_PIECES
;
1454 ratio
= get_move_ratio (speed_p
);
1457 max_size
= STORE_MAX_PIECES
;
1458 ratio
= SET_RATIO (speed_p
);
1460 case STORE_BY_PIECES
:
1461 max_size
= STORE_MAX_PIECES
;
1462 ratio
= get_move_ratio (speed_p
);
1466 return move_by_pieces_ninsns (size
, alignment
, max_size
+ 1) < ratio
;
1470 default_profile_before_prologue (void)
1472 #ifdef PROFILE_BEFORE_PROLOGUE
1479 /* The default implementation of TARGET_PREFERRED_RELOAD_CLASS. */
1482 default_preferred_reload_class (rtx x ATTRIBUTE_UNUSED
,
1485 #ifdef PREFERRED_RELOAD_CLASS
1486 return (reg_class_t
) PREFERRED_RELOAD_CLASS (x
, (enum reg_class
) rclass
);
1492 /* The default implementation of TARGET_OUTPUT_PREFERRED_RELOAD_CLASS. */
1495 default_preferred_output_reload_class (rtx x ATTRIBUTE_UNUSED
,
1501 /* The default implementation of TARGET_PREFERRED_RENAME_CLASS. */
1503 default_preferred_rename_class (reg_class_t rclass ATTRIBUTE_UNUSED
)
1508 /* The default implementation of TARGET_CLASS_LIKELY_SPILLED_P. */
1511 default_class_likely_spilled_p (reg_class_t rclass
)
1513 return (reg_class_size
[(int) rclass
] == 1);
1516 /* The default implementation of TARGET_CLASS_MAX_NREGS. */
1519 default_class_max_nregs (reg_class_t rclass ATTRIBUTE_UNUSED
,
1520 machine_mode mode ATTRIBUTE_UNUSED
)
1522 #ifdef CLASS_MAX_NREGS
1523 return (unsigned char) CLASS_MAX_NREGS ((enum reg_class
) rclass
, mode
);
1525 return ((GET_MODE_SIZE (mode
) + UNITS_PER_WORD
- 1) / UNITS_PER_WORD
);
1529 /* Determine the debugging unwind mechanism for the target. */
1531 enum unwind_info_type
1532 default_debug_unwind_info (void)
1534 /* If the target wants to force the use of dwarf2 unwind info, let it. */
1535 /* ??? Change all users to the hook, then poison this. */
1536 #ifdef DWARF2_FRAME_INFO
1537 if (DWARF2_FRAME_INFO
)
1541 /* Otherwise, only turn it on if dwarf2 debugging is enabled. */
1542 #ifdef DWARF2_DEBUGGING_INFO
1543 if (write_symbols
== DWARF2_DEBUG
|| write_symbols
== VMS_AND_DWARF2_DEBUG
)
1550 /* Determine the correct mode for a Dwarf frame register that represents
1554 default_dwarf_frame_reg_mode (int regno
)
1556 machine_mode save_mode
= reg_raw_mode
[regno
];
1558 if (HARD_REGNO_CALL_PART_CLOBBERED (regno
, save_mode
))
1559 save_mode
= choose_hard_reg_mode (regno
, 1, true);
1563 /* To be used by targets where reg_raw_mode doesn't return the right
1564 mode for registers used in apply_builtin_return and apply_builtin_arg. */
1567 default_get_reg_raw_mode (int regno
)
1569 return reg_raw_mode
[regno
];
1572 /* Return true if a leaf function should stay leaf even with profiling
1576 default_keep_leaf_when_profiled ()
1581 /* Return true if the state of option OPTION should be stored in PCH files
1582 and checked by default_pch_valid_p. Store the option's current state
1586 option_affects_pch_p (int option
, struct cl_option_state
*state
)
1588 if ((cl_options
[option
].flags
& CL_TARGET
) == 0)
1590 if ((cl_options
[option
].flags
& CL_PCH_IGNORE
) != 0)
1592 if (option_flag_var (option
, &global_options
) == &target_flags
)
1593 if (targetm
.check_pch_target_flags
)
1595 return get_option_state (&global_options
, option
, state
);
1598 /* Default version of get_pch_validity.
1599 By default, every flag difference is fatal; that will be mostly right for
1600 most targets, but completely right for very few. */
1603 default_get_pch_validity (size_t *sz
)
1605 struct cl_option_state state
;
1610 if (targetm
.check_pch_target_flags
)
1611 *sz
+= sizeof (target_flags
);
1612 for (i
= 0; i
< cl_options_count
; i
++)
1613 if (option_affects_pch_p (i
, &state
))
1616 result
= r
= XNEWVEC (char, *sz
);
1620 if (targetm
.check_pch_target_flags
)
1622 memcpy (r
, &target_flags
, sizeof (target_flags
));
1623 r
+= sizeof (target_flags
);
1626 for (i
= 0; i
< cl_options_count
; i
++)
1627 if (option_affects_pch_p (i
, &state
))
1629 memcpy (r
, state
.data
, state
.size
);
1636 /* Return a message which says that a PCH file was created with a different
1637 setting of OPTION. */
1640 pch_option_mismatch (const char *option
)
1642 return xasprintf (_("created and used with differing settings of '%s'"),
1646 /* Default version of pch_valid_p. */
1649 default_pch_valid_p (const void *data_p
, size_t len
)
1651 struct cl_option_state state
;
1652 const char *data
= (const char *)data_p
;
1655 /* -fpic and -fpie also usually make a PCH invalid. */
1656 if (data
[0] != flag_pic
)
1657 return _("created and used with different settings of -fpic");
1658 if (data
[1] != flag_pie
)
1659 return _("created and used with different settings of -fpie");
1662 /* Check target_flags. */
1663 if (targetm
.check_pch_target_flags
)
1668 memcpy (&tf
, data
, sizeof (target_flags
));
1669 data
+= sizeof (target_flags
);
1670 len
-= sizeof (target_flags
);
1671 r
= targetm
.check_pch_target_flags (tf
);
1676 for (i
= 0; i
< cl_options_count
; i
++)
1677 if (option_affects_pch_p (i
, &state
))
1679 if (memcmp (data
, state
.data
, state
.size
) != 0)
1680 return pch_option_mismatch (cl_options
[i
].opt_text
);
1688 /* Default version of cstore_mode. */
1691 default_cstore_mode (enum insn_code icode
)
1693 return insn_data
[(int) icode
].operand
[0].mode
;
1696 /* Default version of member_type_forces_blk. */
1699 default_member_type_forces_blk (const_tree
, machine_mode
)
1705 default_load_bounds_for_arg (rtx addr ATTRIBUTE_UNUSED
,
1706 rtx ptr ATTRIBUTE_UNUSED
,
1707 rtx bnd ATTRIBUTE_UNUSED
)
1713 default_store_bounds_for_arg (rtx val ATTRIBUTE_UNUSED
,
1714 rtx addr ATTRIBUTE_UNUSED
,
1715 rtx bounds ATTRIBUTE_UNUSED
,
1716 rtx to ATTRIBUTE_UNUSED
)
1722 default_load_returned_bounds (rtx slot ATTRIBUTE_UNUSED
)
1728 default_store_returned_bounds (rtx slot ATTRIBUTE_UNUSED
,
1729 rtx bounds ATTRIBUTE_UNUSED
)
1734 /* Default version of canonicalize_comparison. */
1737 default_canonicalize_comparison (int *, rtx
*, rtx
*, bool)
1741 /* Default implementation of TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */
1744 default_atomic_assign_expand_fenv (tree
*, tree
*, tree
*)
1748 #ifndef PAD_VARARGS_DOWN
1749 #define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
1752 /* Build an indirect-ref expression over the given TREE, which represents a
1753 piece of a va_arg() expansion. */
1755 build_va_arg_indirect_ref (tree addr
)
1757 addr
= build_simple_mem_ref_loc (EXPR_LOCATION (addr
), addr
);
1761 /* The "standard" implementation of va_arg: read the value from the
1762 current (padded) address and increment by the (padded) size. */
1765 std_gimplify_va_arg_expr (tree valist
, tree type
, gimple_seq
*pre_p
,
1768 tree addr
, t
, type_size
, rounded_size
, valist_tmp
;
1769 unsigned HOST_WIDE_INT align
, boundary
;
1772 #ifdef ARGS_GROW_DOWNWARD
1773 /* All of the alignment and movement below is for args-grow-up machines.
1774 As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
1775 implement their own specialized gimplify_va_arg_expr routines. */
1779 indirect
= pass_by_reference (NULL
, TYPE_MODE (type
), type
, false);
1781 type
= build_pointer_type (type
);
1783 align
= PARM_BOUNDARY
/ BITS_PER_UNIT
;
1784 boundary
= targetm
.calls
.function_arg_boundary (TYPE_MODE (type
), type
);
1786 /* When we align parameter on stack for caller, if the parameter
1787 alignment is beyond MAX_SUPPORTED_STACK_ALIGNMENT, it will be
1788 aligned at MAX_SUPPORTED_STACK_ALIGNMENT. We will match callee
1789 here with caller. */
1790 if (boundary
> MAX_SUPPORTED_STACK_ALIGNMENT
)
1791 boundary
= MAX_SUPPORTED_STACK_ALIGNMENT
;
1793 boundary
/= BITS_PER_UNIT
;
1795 /* Hoist the valist value into a temporary for the moment. */
1796 valist_tmp
= get_initialized_tmp_var (valist
, pre_p
, NULL
);
1798 /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
1799 requires greater alignment, we must perform dynamic alignment. */
1800 if (boundary
> align
1801 && !integer_zerop (TYPE_SIZE (type
)))
1803 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1804 fold_build_pointer_plus_hwi (valist_tmp
, boundary
- 1));
1805 gimplify_and_add (t
, pre_p
);
1807 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1808 fold_build2 (BIT_AND_EXPR
, TREE_TYPE (valist
),
1810 build_int_cst (TREE_TYPE (valist
), -boundary
)));
1811 gimplify_and_add (t
, pre_p
);
1816 /* If the actual alignment is less than the alignment of the type,
1817 adjust the type accordingly so that we don't assume strict alignment
1818 when dereferencing the pointer. */
1819 boundary
*= BITS_PER_UNIT
;
1820 if (boundary
< TYPE_ALIGN (type
))
1822 type
= build_variant_type_copy (type
);
1823 TYPE_ALIGN (type
) = boundary
;
1826 /* Compute the rounded size of the type. */
1827 type_size
= size_in_bytes (type
);
1828 rounded_size
= round_up (type_size
, align
);
1830 /* Reduce rounded_size so it's sharable with the postqueue. */
1831 gimplify_expr (&rounded_size
, pre_p
, post_p
, is_gimple_val
, fb_rvalue
);
1835 if (PAD_VARARGS_DOWN
&& !integer_zerop (rounded_size
))
1837 /* Small args are padded downward. */
1838 t
= fold_build2_loc (input_location
, GT_EXPR
, sizetype
,
1839 rounded_size
, size_int (align
));
1840 t
= fold_build3 (COND_EXPR
, sizetype
, t
, size_zero_node
,
1841 size_binop (MINUS_EXPR
, rounded_size
, type_size
));
1842 addr
= fold_build_pointer_plus (addr
, t
);
1845 /* Compute new value for AP. */
1846 t
= fold_build_pointer_plus (valist_tmp
, rounded_size
);
1847 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist
, t
);
1848 gimplify_and_add (t
, pre_p
);
1850 addr
= fold_convert (build_pointer_type (type
), addr
);
1853 addr
= build_va_arg_indirect_ref (addr
);
1855 return build_va_arg_indirect_ref (addr
);
1859 default_chkp_bound_type (void)
1861 tree res
= make_node (POINTER_BOUNDS_TYPE
);
1862 TYPE_PRECISION (res
) = TYPE_PRECISION (size_type_node
) * 2;
1863 TYPE_NAME (res
) = get_identifier ("__bounds_type");
1864 SET_TYPE_MODE (res
, targetm
.chkp_bound_mode ());
1870 default_chkp_bound_mode (void)
1876 default_builtin_chkp_function (unsigned int fcode ATTRIBUTE_UNUSED
)
1882 default_chkp_function_value_bounds (const_tree ret_type ATTRIBUTE_UNUSED
,
1883 const_tree fn_decl_or_type ATTRIBUTE_UNUSED
,
1884 bool outgoing ATTRIBUTE_UNUSED
)
1890 default_chkp_make_bounds_constant (HOST_WIDE_INT lb ATTRIBUTE_UNUSED
,
1891 HOST_WIDE_INT ub ATTRIBUTE_UNUSED
)
1897 default_chkp_initialize_bounds (tree var ATTRIBUTE_UNUSED
,
1898 tree lb ATTRIBUTE_UNUSED
,
1899 tree ub ATTRIBUTE_UNUSED
,
1900 tree
*stmts ATTRIBUTE_UNUSED
)
1906 default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED
,
1907 enum machine_mode mode ATTRIBUTE_UNUSED
,
1908 tree type ATTRIBUTE_UNUSED
,
1909 int *pretend_arg_size ATTRIBUTE_UNUSED
,
1910 int second_time ATTRIBUTE_UNUSED
)
1914 /* An implementation of TARGET_CAN_USE_DOLOOP_P for targets that do
1915 not support nested low-overhead loops. */
1918 can_use_doloop_if_innermost (const widest_int
&, const widest_int
&,
1919 unsigned int loop_depth
, bool)
1921 return loop_depth
== 1;
1924 #include "gt-targhooks.h"