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 "double-int.h"
64 #include "fold-const.h"
65 #include "stor-layout.h"
68 #include "hard-reg-set.h"
71 #include "statistics.h"
73 #include "fixed-value.h"
74 #include "insn-config.h"
83 #include "diagnostic-core.h"
86 #include "target-def.h"
89 #include "insn-codes.h"
94 #include "tree-ssa-alias.h"
95 #include "gimple-expr.h"
97 #include "stringpool.h"
98 #include "tree-ssanames.h"
102 default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED
,
103 rtx addr ATTRIBUTE_UNUSED
,
104 bool strict ATTRIBUTE_UNUSED
)
106 #ifdef GO_IF_LEGITIMATE_ADDRESS
107 /* Defer to the old implementation using a goto. */
109 return strict_memory_address_p (mode
, addr
);
111 return memory_address_p (mode
, addr
);
118 default_external_libcall (rtx fun ATTRIBUTE_UNUSED
)
120 #ifdef ASM_OUTPUT_EXTERNAL_LIBCALL
121 ASM_OUTPUT_EXTERNAL_LIBCALL (asm_out_file
, fun
);
126 default_unspec_may_trap_p (const_rtx x
, unsigned flags
)
130 /* Any floating arithmetic may trap. */
131 if ((SCALAR_FLOAT_MODE_P (GET_MODE (x
)) && flag_trapping_math
))
134 for (i
= 0; i
< XVECLEN (x
, 0); ++i
)
136 if (may_trap_p_1 (XVECEXP (x
, 0, i
), flags
))
144 default_promote_function_mode (const_tree type ATTRIBUTE_UNUSED
,
146 int *punsignedp ATTRIBUTE_UNUSED
,
147 const_tree funtype ATTRIBUTE_UNUSED
,
148 int for_return ATTRIBUTE_UNUSED
)
150 if (type
!= NULL_TREE
&& for_return
== 2)
151 return promote_mode (type
, mode
, punsignedp
);
156 default_promote_function_mode_always_promote (const_tree type
,
159 const_tree funtype ATTRIBUTE_UNUSED
,
160 int for_return ATTRIBUTE_UNUSED
)
162 return promote_mode (type
, mode
, punsignedp
);
166 default_cc_modes_compatible (machine_mode m1
, machine_mode m2
)
174 default_return_in_memory (const_tree type
,
175 const_tree fntype ATTRIBUTE_UNUSED
)
177 return (TYPE_MODE (type
) == BLKmode
);
181 default_legitimize_address (rtx x
, rtx orig_x ATTRIBUTE_UNUSED
,
182 machine_mode mode ATTRIBUTE_UNUSED
)
188 default_legitimize_address_displacement (rtx
*disp ATTRIBUTE_UNUSED
,
189 rtx
*offset ATTRIBUTE_UNUSED
,
190 machine_mode mode ATTRIBUTE_UNUSED
)
196 default_expand_builtin_saveregs (void)
198 error ("__builtin_saveregs not supported by this target");
203 default_setup_incoming_varargs (cumulative_args_t ca ATTRIBUTE_UNUSED
,
204 machine_mode mode ATTRIBUTE_UNUSED
,
205 tree type ATTRIBUTE_UNUSED
,
206 int *pretend_arg_size ATTRIBUTE_UNUSED
,
207 int second_time ATTRIBUTE_UNUSED
)
211 /* The default implementation of TARGET_BUILTIN_SETJMP_FRAME_VALUE. */
214 default_builtin_setjmp_frame_value (void)
216 return virtual_stack_vars_rtx
;
219 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns false. */
222 hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t ca ATTRIBUTE_UNUSED
)
228 default_pretend_outgoing_varargs_named (cumulative_args_t ca ATTRIBUTE_UNUSED
)
230 return (targetm
.calls
.setup_incoming_varargs
231 != default_setup_incoming_varargs
);
235 default_eh_return_filter_mode (void)
237 return targetm
.unwind_word_mode ();
241 default_libgcc_cmp_return_mode (void)
247 default_libgcc_shift_count_mode (void)
253 default_unwind_word_mode (void)
258 /* The default implementation of TARGET_SHIFT_TRUNCATION_MASK. */
260 unsigned HOST_WIDE_INT
261 default_shift_truncation_mask (machine_mode mode
)
263 return SHIFT_COUNT_TRUNCATED
? GET_MODE_BITSIZE (mode
) - 1 : 0;
266 /* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */
269 default_min_divisions_for_recip_mul (machine_mode mode ATTRIBUTE_UNUSED
)
271 return have_insn_for (DIV
, mode
) ? 3 : 2;
274 /* The default implementation of TARGET_MODE_REP_EXTENDED. */
277 default_mode_rep_extended (machine_mode mode ATTRIBUTE_UNUSED
,
278 machine_mode mode_rep ATTRIBUTE_UNUSED
)
283 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true. */
286 hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t a ATTRIBUTE_UNUSED
)
291 /* Return machine mode for non-standard suffix
292 or VOIDmode if non-standard suffixes are unsupported. */
294 default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED
)
299 /* The generic C++ ABI specifies this is a 64-bit value. */
301 default_cxx_guard_type (void)
303 return long_long_integer_type_node
;
306 /* Returns the size of the cookie to use when allocating an array
307 whose elements have the indicated TYPE. Assumes that it is already
308 known that a cookie is needed. */
311 default_cxx_get_cookie_size (tree type
)
315 /* We need to allocate an additional max (sizeof (size_t), alignof
316 (true_type)) bytes. */
320 sizetype_size
= size_in_bytes (sizetype
);
321 type_align
= size_int (TYPE_ALIGN_UNIT (type
));
322 if (tree_int_cst_lt (type_align
, sizetype_size
))
323 cookie_size
= sizetype_size
;
325 cookie_size
= type_align
;
330 /* Return true if a parameter must be passed by reference. This version
331 of the TARGET_PASS_BY_REFERENCE hook uses just MUST_PASS_IN_STACK. */
334 hook_pass_by_reference_must_pass_in_stack (cumulative_args_t c ATTRIBUTE_UNUSED
,
335 machine_mode mode ATTRIBUTE_UNUSED
, const_tree type ATTRIBUTE_UNUSED
,
336 bool named_arg ATTRIBUTE_UNUSED
)
338 return targetm
.calls
.must_pass_in_stack (mode
, type
);
341 /* Return true if a parameter follows callee copies conventions. This
342 version of the hook is true for all named arguments. */
345 hook_callee_copies_named (cumulative_args_t ca ATTRIBUTE_UNUSED
,
346 machine_mode mode ATTRIBUTE_UNUSED
,
347 const_tree type ATTRIBUTE_UNUSED
, bool named
)
352 /* Emit to STREAM the assembler syntax for insn operand X. */
355 default_print_operand (FILE *stream ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
356 int code ATTRIBUTE_UNUSED
)
359 PRINT_OPERAND (stream
, x
, code
);
365 /* Emit to STREAM the assembler syntax for an insn operand whose memory
369 default_print_operand_address (FILE *stream ATTRIBUTE_UNUSED
,
370 rtx x ATTRIBUTE_UNUSED
)
372 #ifdef PRINT_OPERAND_ADDRESS
373 PRINT_OPERAND_ADDRESS (stream
, x
);
379 /* Return true if CODE is a valid punctuation character for the
380 `print_operand' hook. */
383 default_print_operand_punct_valid_p (unsigned char code ATTRIBUTE_UNUSED
)
385 #ifdef PRINT_OPERAND_PUNCT_VALID_P
386 return PRINT_OPERAND_PUNCT_VALID_P (code
);
392 /* The default implementation of TARGET_MANGLE_ASSEMBLER_NAME. */
394 default_mangle_assembler_name (const char *name ATTRIBUTE_UNUSED
)
396 const char *skipped
= name
+ (*name
== '*' ? 1 : 0);
397 const char *stripped
= targetm
.strip_name_encoding (skipped
);
398 if (*name
!= '*' && user_label_prefix
[0])
399 stripped
= ACONCAT ((user_label_prefix
, stripped
, NULL
));
400 return get_identifier (stripped
);
403 /* True if MODE is valid for the target. By "valid", we mean able to
404 be manipulated in non-trivial ways. In particular, this means all
405 the arithmetic is supported.
407 By default we guess this means that any C type is supported. If
408 we can't map the mode back to a type that would be available in C,
409 then reject it. Special case, here, is the double-word arithmetic
410 supported by optabs.c. */
413 default_scalar_mode_supported_p (machine_mode mode
)
415 int precision
= GET_MODE_PRECISION (mode
);
417 switch (GET_MODE_CLASS (mode
))
419 case MODE_PARTIAL_INT
:
421 if (precision
== CHAR_TYPE_SIZE
)
423 if (precision
== SHORT_TYPE_SIZE
)
425 if (precision
== INT_TYPE_SIZE
)
427 if (precision
== LONG_TYPE_SIZE
)
429 if (precision
== LONG_LONG_TYPE_SIZE
)
431 if (precision
== 2 * BITS_PER_WORD
)
436 if (precision
== FLOAT_TYPE_SIZE
)
438 if (precision
== DOUBLE_TYPE_SIZE
)
440 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
444 case MODE_DECIMAL_FLOAT
:
456 /* Return true if libgcc supports floating-point mode MODE (known to
457 be supported as a scalar mode). */
460 default_libgcc_floating_mode_supported_p (machine_mode mode
)
483 /* Make some target macros useable by target-independent code. */
485 targhook_words_big_endian (void)
487 return !!WORDS_BIG_ENDIAN
;
491 targhook_float_words_big_endian (void)
493 return !!FLOAT_WORDS_BIG_ENDIAN
;
496 /* True if the target supports floating-point exceptions and rounding
500 default_float_exceptions_rounding_supported_p (void)
509 /* True if the target supports decimal floating point. */
512 default_decimal_float_supported_p (void)
514 return ENABLE_DECIMAL_FLOAT
;
517 /* True if the target supports fixed-point arithmetic. */
520 default_fixed_point_supported_p (void)
522 return ENABLE_FIXED_POINT
;
525 /* True if the target supports GNU indirect functions. */
528 default_has_ifunc_p (void)
530 return HAVE_GNU_INDIRECT_FUNCTION
;
533 /* NULL if INSN insn is valid within a low-overhead loop, otherwise returns
536 This function checks whether a given INSN is valid within a low-overhead
537 loop. If INSN is invalid it returns the reason for that, otherwise it
538 returns NULL. A called function may clobber any special registers required
539 for low-overhead looping. Additionally, some targets (eg, PPC) use the count
540 register for branch on table instructions. We reject the doloop pattern in
544 default_invalid_within_doloop (const rtx_insn
*insn
)
547 return "Function call in loop.";
549 if (tablejump_p (insn
, NULL
, NULL
) || computed_jump_p (insn
))
550 return "Computed branch in the loop.";
555 /* Mapping of builtin functions to vectorized variants. */
558 default_builtin_vectorized_function (tree fndecl ATTRIBUTE_UNUSED
,
559 tree type_out ATTRIBUTE_UNUSED
,
560 tree type_in ATTRIBUTE_UNUSED
)
565 /* Vectorized conversion. */
568 default_builtin_vectorized_conversion (unsigned int code ATTRIBUTE_UNUSED
,
569 tree dest_type ATTRIBUTE_UNUSED
,
570 tree src_type ATTRIBUTE_UNUSED
)
575 /* Default vectorizer cost model values. */
578 default_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost
,
580 int misalign ATTRIBUTE_UNUSED
)
584 switch (type_of_cost
)
594 case cond_branch_not_taken
:
596 case vec_promote_demote
:
600 case unaligned_store
:
603 case cond_branch_taken
:
607 elements
= TYPE_VECTOR_SUBPARTS (vectype
);
608 return elements
/ 2 + 1;
618 default_builtin_reciprocal (unsigned int fn ATTRIBUTE_UNUSED
,
619 bool md_fn ATTRIBUTE_UNUSED
,
620 bool sqrt ATTRIBUTE_UNUSED
)
626 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false (
627 cumulative_args_t ca ATTRIBUTE_UNUSED
,
628 machine_mode mode ATTRIBUTE_UNUSED
,
629 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
635 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true (
636 cumulative_args_t ca ATTRIBUTE_UNUSED
,
637 machine_mode mode ATTRIBUTE_UNUSED
,
638 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
644 hook_int_CUMULATIVE_ARGS_mode_tree_bool_0 (
645 cumulative_args_t ca ATTRIBUTE_UNUSED
,
646 machine_mode mode ATTRIBUTE_UNUSED
,
647 tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
653 default_function_arg_advance (cumulative_args_t ca ATTRIBUTE_UNUSED
,
654 machine_mode mode ATTRIBUTE_UNUSED
,
655 const_tree type ATTRIBUTE_UNUSED
,
656 bool named ATTRIBUTE_UNUSED
)
662 default_function_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
663 machine_mode mode ATTRIBUTE_UNUSED
,
664 const_tree type ATTRIBUTE_UNUSED
,
665 bool named ATTRIBUTE_UNUSED
)
671 default_function_incoming_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
672 machine_mode mode ATTRIBUTE_UNUSED
,
673 const_tree type ATTRIBUTE_UNUSED
,
674 bool named ATTRIBUTE_UNUSED
)
680 default_function_arg_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
681 const_tree type ATTRIBUTE_UNUSED
)
683 return PARM_BOUNDARY
;
687 default_function_arg_round_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
688 const_tree type ATTRIBUTE_UNUSED
)
690 return PARM_BOUNDARY
;
694 hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED
)
699 hook_invalid_arg_for_unprototyped_fn (
700 const_tree typelist ATTRIBUTE_UNUSED
,
701 const_tree funcdecl ATTRIBUTE_UNUSED
,
702 const_tree val ATTRIBUTE_UNUSED
)
707 /* Initialize the stack protection decls. */
709 /* Stack protection related decls living in libgcc. */
710 static GTY(()) tree stack_chk_guard_decl
;
713 default_stack_protect_guard (void)
715 tree t
= stack_chk_guard_decl
;
721 t
= build_decl (UNKNOWN_LOCATION
,
722 VAR_DECL
, get_identifier ("__stack_chk_guard"),
726 DECL_EXTERNAL (t
) = 1;
728 TREE_THIS_VOLATILE (t
) = 1;
729 DECL_ARTIFICIAL (t
) = 1;
730 DECL_IGNORED_P (t
) = 1;
732 /* Do not share RTL as the declaration is visible outside of
735 RTX_FLAG (x
, used
) = 1;
737 stack_chk_guard_decl
= t
;
743 static GTY(()) tree stack_chk_fail_decl
;
746 default_external_stack_protect_fail (void)
748 tree t
= stack_chk_fail_decl
;
752 t
= build_function_type_list (void_type_node
, NULL_TREE
);
753 t
= build_decl (UNKNOWN_LOCATION
,
754 FUNCTION_DECL
, get_identifier ("__stack_chk_fail"), t
);
757 DECL_EXTERNAL (t
) = 1;
759 TREE_THIS_VOLATILE (t
) = 1;
760 TREE_NOTHROW (t
) = 1;
761 DECL_ARTIFICIAL (t
) = 1;
762 DECL_IGNORED_P (t
) = 1;
763 DECL_VISIBILITY (t
) = VISIBILITY_DEFAULT
;
764 DECL_VISIBILITY_SPECIFIED (t
) = 1;
766 stack_chk_fail_decl
= t
;
769 return build_call_expr (t
, 0);
773 default_hidden_stack_protect_fail (void)
775 #ifndef HAVE_GAS_HIDDEN
776 return default_external_stack_protect_fail ();
778 tree t
= stack_chk_fail_decl
;
781 return default_external_stack_protect_fail ();
785 t
= build_function_type_list (void_type_node
, NULL_TREE
);
786 t
= build_decl (UNKNOWN_LOCATION
, FUNCTION_DECL
,
787 get_identifier ("__stack_chk_fail_local"), t
);
790 DECL_EXTERNAL (t
) = 1;
792 TREE_THIS_VOLATILE (t
) = 1;
793 TREE_NOTHROW (t
) = 1;
794 DECL_ARTIFICIAL (t
) = 1;
795 DECL_IGNORED_P (t
) = 1;
796 DECL_VISIBILITY_SPECIFIED (t
) = 1;
797 DECL_VISIBILITY (t
) = VISIBILITY_HIDDEN
;
799 stack_chk_fail_decl
= t
;
802 return build_call_expr (t
, 0);
807 hook_bool_const_rtx_commutative_p (const_rtx x
,
808 int outer_code ATTRIBUTE_UNUSED
)
810 return COMMUTATIVE_P (x
);
814 default_function_value (const_tree ret_type ATTRIBUTE_UNUSED
,
815 const_tree fn_decl_or_type
,
816 bool outgoing ATTRIBUTE_UNUSED
)
818 /* The old interface doesn't handle receiving the function type. */
820 && !DECL_P (fn_decl_or_type
))
821 fn_decl_or_type
= NULL
;
823 #ifdef FUNCTION_VALUE
824 return FUNCTION_VALUE (ret_type
, fn_decl_or_type
);
831 default_libcall_value (machine_mode mode ATTRIBUTE_UNUSED
,
832 const_rtx fun ATTRIBUTE_UNUSED
)
835 return LIBCALL_VALUE (mode
);
841 /* The default hook for TARGET_FUNCTION_VALUE_REGNO_P. */
844 default_function_value_regno_p (const unsigned int regno ATTRIBUTE_UNUSED
)
846 #ifdef FUNCTION_VALUE_REGNO_P
847 return FUNCTION_VALUE_REGNO_P (regno
);
854 default_internal_arg_pointer (void)
856 /* If the reg that the virtual arg pointer will be translated into is
857 not a fixed reg or is the stack pointer, make a copy of the virtual
858 arg pointer, and address parms via the copy. The frame pointer is
859 considered fixed even though it is not marked as such. */
860 if ((ARG_POINTER_REGNUM
== STACK_POINTER_REGNUM
861 || ! (fixed_regs
[ARG_POINTER_REGNUM
]
862 || ARG_POINTER_REGNUM
== FRAME_POINTER_REGNUM
)))
863 return copy_to_reg (virtual_incoming_args_rtx
);
865 return virtual_incoming_args_rtx
;
869 default_static_chain (const_tree
ARG_UNUSED (fndecl_or_type
), bool incoming_p
)
873 #ifdef STATIC_CHAIN_INCOMING_REGNUM
874 return gen_rtx_REG (Pmode
, STATIC_CHAIN_INCOMING_REGNUM
);
878 #ifdef STATIC_CHAIN_REGNUM
879 return gen_rtx_REG (Pmode
, STATIC_CHAIN_REGNUM
);
883 static bool issued_error
;
887 sorry ("nested functions not supported on this target");
890 /* It really doesn't matter what we return here, so long at it
891 doesn't cause the rest of the compiler to crash. */
892 return gen_rtx_MEM (Pmode
, stack_pointer_rtx
);
897 default_trampoline_init (rtx
ARG_UNUSED (m_tramp
), tree
ARG_UNUSED (t_func
),
898 rtx
ARG_UNUSED (r_chain
))
900 sorry ("nested function trampolines not supported on this target");
904 default_return_pops_args (tree fundecl ATTRIBUTE_UNUSED
,
905 tree funtype ATTRIBUTE_UNUSED
,
906 int size ATTRIBUTE_UNUSED
)
912 default_branch_target_register_class (void)
924 default_register_priority (int hard_regno ATTRIBUTE_UNUSED
)
930 default_register_usage_leveling_p (void)
936 default_different_addr_displacement_p (void)
942 default_secondary_reload (bool in_p ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
943 reg_class_t reload_class_i ATTRIBUTE_UNUSED
,
944 machine_mode reload_mode ATTRIBUTE_UNUSED
,
945 secondary_reload_info
*sri
)
947 enum reg_class rclass
= NO_REGS
;
948 enum reg_class reload_class
= (enum reg_class
) reload_class_i
;
950 if (sri
->prev_sri
&& sri
->prev_sri
->t_icode
!= CODE_FOR_nothing
)
952 sri
->icode
= sri
->prev_sri
->t_icode
;
955 #ifdef SECONDARY_INPUT_RELOAD_CLASS
957 rclass
= SECONDARY_INPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
959 #ifdef SECONDARY_OUTPUT_RELOAD_CLASS
961 rclass
= SECONDARY_OUTPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
963 if (rclass
!= NO_REGS
)
966 = direct_optab_handler (in_p
? reload_in_optab
: reload_out_optab
,
969 if (icode
!= CODE_FOR_nothing
970 && !insn_operand_matches (icode
, in_p
, x
))
971 icode
= CODE_FOR_nothing
;
972 else if (icode
!= CODE_FOR_nothing
)
974 const char *insn_constraint
, *scratch_constraint
;
975 enum reg_class insn_class
, scratch_class
;
977 gcc_assert (insn_data
[(int) icode
].n_operands
== 3);
978 insn_constraint
= insn_data
[(int) icode
].operand
[!in_p
].constraint
;
979 if (!*insn_constraint
)
980 insn_class
= ALL_REGS
;
985 gcc_assert (*insn_constraint
== '=');
988 insn_class
= (reg_class_for_constraint
989 (lookup_constraint (insn_constraint
)));
990 gcc_assert (insn_class
!= NO_REGS
);
993 scratch_constraint
= insn_data
[(int) icode
].operand
[2].constraint
;
994 /* The scratch register's constraint must start with "=&",
995 except for an input reload, where only "=" is necessary,
996 and where it might be beneficial to re-use registers from
998 gcc_assert (scratch_constraint
[0] == '='
999 && (in_p
|| scratch_constraint
[1] == '&'));
1000 scratch_constraint
++;
1001 if (*scratch_constraint
== '&')
1002 scratch_constraint
++;
1003 scratch_class
= (reg_class_for_constraint
1004 (lookup_constraint (scratch_constraint
)));
1006 if (reg_class_subset_p (reload_class
, insn_class
))
1008 gcc_assert (scratch_class
== rclass
);
1012 rclass
= insn_class
;
1015 if (rclass
== NO_REGS
)
1018 sri
->t_icode
= icode
;
1023 /* By default, if flag_pic is true, then neither local nor global relocs
1024 should be placed in readonly memory. */
1027 default_reloc_rw_mask (void)
1029 return flag_pic
? 3 : 0;
1032 /* By default, do no modification. */
1033 tree
default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED
,
1039 /* Default to natural alignment for vector types. */
1041 default_vector_alignment (const_tree type
)
1043 return tree_to_shwi (TYPE_SIZE (type
));
1047 default_builtin_vector_alignment_reachable (const_tree type
, bool is_packed
)
1052 /* Assuming that types whose size is > pointer-size are not guaranteed to be
1053 naturally aligned. */
1054 if (tree_int_cst_compare (TYPE_SIZE (type
), bitsize_int (POINTER_SIZE
)) > 0)
1057 /* Assuming that types whose size is <= pointer-size
1058 are naturally aligned. */
1062 /* By default, assume that a target supports any factor of misalignment
1063 memory access if it supports movmisalign patten.
1064 is_packed is true if the memory access is defined in a packed struct. */
1066 default_builtin_support_vector_misalignment (machine_mode mode
,
1074 if (optab_handler (movmisalign_optab
, mode
) != CODE_FOR_nothing
)
1079 /* By default, only attempt to parallelize bitwise operations, and
1080 possibly adds/subtracts using bit-twiddling. */
1083 default_preferred_simd_mode (machine_mode mode ATTRIBUTE_UNUSED
)
1088 /* By default only the size derived from the preferred vector mode
1092 default_autovectorize_vector_sizes (void)
1097 /* By default, the cost model accumulates three separate costs (prologue,
1098 loop body, and epilogue) for a vectorized loop or block. So allocate an
1099 array of three unsigned ints, set it to zero, and return its address. */
1102 default_init_cost (struct loop
*loop_info ATTRIBUTE_UNUSED
)
1104 unsigned *cost
= XNEWVEC (unsigned, 3);
1105 cost
[vect_prologue
] = cost
[vect_body
] = cost
[vect_epilogue
] = 0;
1109 /* By default, the cost model looks up the cost of the given statement
1110 kind and mode, multiplies it by the occurrence count, accumulates
1111 it into the cost specified by WHERE, and returns the cost added. */
1114 default_add_stmt_cost (void *data
, int count
, enum vect_cost_for_stmt kind
,
1115 struct _stmt_vec_info
*stmt_info
, int misalign
,
1116 enum vect_cost_model_location where
)
1118 unsigned *cost
= (unsigned *) data
;
1119 unsigned retval
= 0;
1121 tree vectype
= stmt_info
? stmt_vectype (stmt_info
) : NULL_TREE
;
1122 int stmt_cost
= targetm
.vectorize
.builtin_vectorization_cost (kind
, vectype
,
1124 /* Statements in an inner loop relative to the loop being
1125 vectorized are weighted more heavily. The value here is
1126 arbitrary and could potentially be improved with analysis. */
1127 if (where
== vect_body
&& stmt_info
&& stmt_in_inner_loop_p (stmt_info
))
1128 count
*= 50; /* FIXME. */
1130 retval
= (unsigned) (count
* stmt_cost
);
1131 cost
[where
] += retval
;
1136 /* By default, the cost model just returns the accumulated costs. */
1139 default_finish_cost (void *data
, unsigned *prologue_cost
,
1140 unsigned *body_cost
, unsigned *epilogue_cost
)
1142 unsigned *cost
= (unsigned *) data
;
1143 *prologue_cost
= cost
[vect_prologue
];
1144 *body_cost
= cost
[vect_body
];
1145 *epilogue_cost
= cost
[vect_epilogue
];
1148 /* Free the cost data. */
1151 default_destroy_cost_data (void *data
)
1156 /* Determine whether or not a pointer mode is valid. Assume defaults
1157 of ptr_mode or Pmode - can be overridden. */
1159 default_valid_pointer_mode (machine_mode mode
)
1161 return (mode
== ptr_mode
|| mode
== Pmode
);
1164 /* Determine whether the memory reference specified by REF may alias
1165 the C libraries errno location. */
1167 default_ref_may_alias_errno (ao_ref
*ref
)
1169 tree base
= ao_ref_base (ref
);
1170 /* The default implementation assumes the errno location is
1171 a declaration of type int or is always accessed via a
1172 pointer to int. We assume that accesses to errno are
1173 not deliberately obfuscated (even in conforming ways). */
1174 if (TYPE_UNSIGNED (TREE_TYPE (base
))
1175 || TYPE_MODE (TREE_TYPE (base
)) != TYPE_MODE (integer_type_node
))
1177 /* The default implementation assumes an errno location
1178 declaration is never defined in the current compilation unit. */
1180 && !TREE_STATIC (base
))
1182 else if (TREE_CODE (base
) == MEM_REF
1183 && TREE_CODE (TREE_OPERAND (base
, 0)) == SSA_NAME
)
1185 struct ptr_info_def
*pi
= SSA_NAME_PTR_INFO (TREE_OPERAND (base
, 0));
1186 return !pi
|| pi
->pt
.anything
|| pi
->pt
.nonlocal
;
1191 /* Return the mode for a pointer to a given ADDRSPACE, defaulting to ptr_mode
1192 for the generic address space only. */
1195 default_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1197 gcc_assert (ADDR_SPACE_GENERIC_P (addrspace
));
1201 /* Return the mode for an address in a given ADDRSPACE, defaulting to Pmode
1202 for the generic address space only. */
1205 default_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1207 gcc_assert (ADDR_SPACE_GENERIC_P (addrspace
));
1211 /* Named address space version of valid_pointer_mode. */
1214 default_addr_space_valid_pointer_mode (machine_mode mode
, addr_space_t as
)
1216 if (!ADDR_SPACE_GENERIC_P (as
))
1217 return (mode
== targetm
.addr_space
.pointer_mode (as
)
1218 || mode
== targetm
.addr_space
.address_mode (as
));
1220 return targetm
.valid_pointer_mode (mode
);
1223 /* Some places still assume that all pointer or address modes are the
1224 standard Pmode and ptr_mode. These optimizations become invalid if
1225 the target actually supports multiple different modes. For now,
1226 we disable such optimizations on such targets, using this function. */
1229 target_default_pointer_address_modes_p (void)
1231 if (targetm
.addr_space
.address_mode
!= default_addr_space_address_mode
)
1233 if (targetm
.addr_space
.pointer_mode
!= default_addr_space_pointer_mode
)
1239 /* Named address space version of legitimate_address_p. */
1242 default_addr_space_legitimate_address_p (machine_mode mode
, rtx mem
,
1243 bool strict
, addr_space_t as
)
1245 if (!ADDR_SPACE_GENERIC_P (as
))
1248 return targetm
.legitimate_address_p (mode
, mem
, strict
);
1251 /* Named address space version of LEGITIMIZE_ADDRESS. */
1254 default_addr_space_legitimize_address (rtx x
, rtx oldx
,
1255 machine_mode mode
, addr_space_t as
)
1257 if (!ADDR_SPACE_GENERIC_P (as
))
1260 return targetm
.legitimize_address (x
, oldx
, mode
);
1263 /* The default hook for determining if one named address space is a subset of
1264 another and to return which address space to use as the common address
1268 default_addr_space_subset_p (addr_space_t subset
, addr_space_t superset
)
1270 return (subset
== superset
);
1273 /* The default hook for TARGET_ADDR_SPACE_CONVERT. This hook should never be
1274 called for targets with only a generic address space. */
1277 default_addr_space_convert (rtx op ATTRIBUTE_UNUSED
,
1278 tree from_type ATTRIBUTE_UNUSED
,
1279 tree to_type ATTRIBUTE_UNUSED
)
1285 default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED
)
1290 /* The default implementation of TARGET_MODE_DEPENDENT_ADDRESS_P. */
1293 default_mode_dependent_address_p (const_rtx addr ATTRIBUTE_UNUSED
,
1294 addr_space_t addrspace ATTRIBUTE_UNUSED
)
1300 default_target_option_valid_attribute_p (tree
ARG_UNUSED (fndecl
),
1301 tree
ARG_UNUSED (name
),
1302 tree
ARG_UNUSED (args
),
1303 int ARG_UNUSED (flags
))
1305 warning (OPT_Wattributes
,
1306 "target attribute is not supported on this machine");
1312 default_target_option_pragma_parse (tree
ARG_UNUSED (args
),
1313 tree
ARG_UNUSED (pop_target
))
1315 warning (OPT_Wpragmas
,
1316 "#pragma GCC target is not supported for this machine");
1322 default_target_can_inline_p (tree caller
, tree callee
)
1325 tree callee_opts
= DECL_FUNCTION_SPECIFIC_TARGET (callee
);
1326 tree caller_opts
= DECL_FUNCTION_SPECIFIC_TARGET (caller
);
1328 /* If callee has no option attributes, then it is ok to inline */
1332 /* If caller has no option attributes, but callee does then it is not ok to
1334 else if (!caller_opts
)
1337 /* If both caller and callee have attributes, assume that if the
1338 pointer is different, the two functions have different target
1339 options since build_target_option_node uses a hash table for the
1342 ret
= (callee_opts
== caller_opts
);
1348 # define HAVE_casesi 0
1351 /* If the machine does not have a case insn that compares the bounds,
1352 this means extra overhead for dispatch tables, which raises the
1353 threshold for using them. */
1356 default_case_values_threshold (void)
1358 return (HAVE_casesi
? 4 : 5);
1362 default_have_conditional_execution (void)
1364 #ifdef HAVE_conditional_execution
1365 return HAVE_conditional_execution
;
1371 /* By default we assume that c99 functions are present at the runtime,
1372 but sincos is not. */
1374 default_libc_has_function (enum function_class fn_class
)
1376 if (fn_class
== function_c94
1377 || fn_class
== function_c99_misc
1378 || fn_class
== function_c99_math_complex
)
1385 gnu_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1391 no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1397 default_builtin_tm_load_store (tree
ARG_UNUSED (type
))
1402 /* Compute cost of moving registers to/from memory. */
1405 default_memory_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1406 reg_class_t rclass ATTRIBUTE_UNUSED
,
1407 bool in ATTRIBUTE_UNUSED
)
1409 #ifndef MEMORY_MOVE_COST
1410 return (4 + memory_move_secondary_cost (mode
, (enum reg_class
) rclass
, in
));
1412 return MEMORY_MOVE_COST (mode
, (enum reg_class
) rclass
, in
);
1416 /* Compute cost of moving data from a register of class FROM to one of
1420 default_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1421 reg_class_t from ATTRIBUTE_UNUSED
,
1422 reg_class_t to ATTRIBUTE_UNUSED
)
1424 #ifndef REGISTER_MOVE_COST
1427 return REGISTER_MOVE_COST (mode
, (enum reg_class
) from
, (enum reg_class
) to
);
1431 /* For hooks which use the MOVE_RATIO macro, this gives the legacy default
1432 behaviour. SPEED_P is true if we are compiling for speed. */
1435 get_move_ratio (bool speed_p ATTRIBUTE_UNUSED
)
1437 unsigned int move_ratio
;
1439 move_ratio
= (unsigned int) MOVE_RATIO (speed_p
);
1441 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1443 #else /* No movmem patterns, pick a default. */
1444 move_ratio
= ((speed_p
) ? 15 : 3);
1450 /* Return TRUE if the move_by_pieces/set_by_pieces infrastructure should be
1451 used; return FALSE if the movmem/setmem optab should be expanded, or
1452 a call to memcpy emitted. */
1455 default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT size
,
1456 unsigned int alignment
,
1457 enum by_pieces_operation op
,
1460 unsigned int max_size
= 0;
1461 unsigned int ratio
= 0;
1465 case CLEAR_BY_PIECES
:
1466 max_size
= STORE_MAX_PIECES
;
1467 ratio
= CLEAR_RATIO (speed_p
);
1469 case MOVE_BY_PIECES
:
1470 max_size
= MOVE_MAX_PIECES
;
1471 ratio
= get_move_ratio (speed_p
);
1474 max_size
= STORE_MAX_PIECES
;
1475 ratio
= SET_RATIO (speed_p
);
1477 case STORE_BY_PIECES
:
1478 max_size
= STORE_MAX_PIECES
;
1479 ratio
= get_move_ratio (speed_p
);
1483 return move_by_pieces_ninsns (size
, alignment
, max_size
+ 1) < ratio
;
1487 default_profile_before_prologue (void)
1489 #ifdef PROFILE_BEFORE_PROLOGUE
1496 /* The default implementation of TARGET_PREFERRED_RELOAD_CLASS. */
1499 default_preferred_reload_class (rtx x ATTRIBUTE_UNUSED
,
1502 #ifdef PREFERRED_RELOAD_CLASS
1503 return (reg_class_t
) PREFERRED_RELOAD_CLASS (x
, (enum reg_class
) rclass
);
1509 /* The default implementation of TARGET_OUTPUT_PREFERRED_RELOAD_CLASS. */
1512 default_preferred_output_reload_class (rtx x ATTRIBUTE_UNUSED
,
1518 /* The default implementation of TARGET_PREFERRED_RENAME_CLASS. */
1520 default_preferred_rename_class (reg_class_t rclass ATTRIBUTE_UNUSED
)
1525 /* The default implementation of TARGET_CLASS_LIKELY_SPILLED_P. */
1528 default_class_likely_spilled_p (reg_class_t rclass
)
1530 return (reg_class_size
[(int) rclass
] == 1);
1533 /* The default implementation of TARGET_CLASS_MAX_NREGS. */
1536 default_class_max_nregs (reg_class_t rclass ATTRIBUTE_UNUSED
,
1537 machine_mode mode ATTRIBUTE_UNUSED
)
1539 #ifdef CLASS_MAX_NREGS
1540 return (unsigned char) CLASS_MAX_NREGS ((enum reg_class
) rclass
, mode
);
1542 return ((GET_MODE_SIZE (mode
) + UNITS_PER_WORD
- 1) / UNITS_PER_WORD
);
1546 /* Determine the debugging unwind mechanism for the target. */
1548 enum unwind_info_type
1549 default_debug_unwind_info (void)
1551 /* If the target wants to force the use of dwarf2 unwind info, let it. */
1552 /* ??? Change all users to the hook, then poison this. */
1553 #ifdef DWARF2_FRAME_INFO
1554 if (DWARF2_FRAME_INFO
)
1558 /* Otherwise, only turn it on if dwarf2 debugging is enabled. */
1559 #ifdef DWARF2_DEBUGGING_INFO
1560 if (write_symbols
== DWARF2_DEBUG
|| write_symbols
== VMS_AND_DWARF2_DEBUG
)
1567 /* Determine the correct mode for a Dwarf frame register that represents
1571 default_dwarf_frame_reg_mode (int regno
)
1573 machine_mode save_mode
= reg_raw_mode
[regno
];
1575 if (HARD_REGNO_CALL_PART_CLOBBERED (regno
, save_mode
))
1576 save_mode
= choose_hard_reg_mode (regno
, 1, true);
1580 /* To be used by targets where reg_raw_mode doesn't return the right
1581 mode for registers used in apply_builtin_return and apply_builtin_arg. */
1584 default_get_reg_raw_mode (int regno
)
1586 return reg_raw_mode
[regno
];
1589 /* Return true if a leaf function should stay leaf even with profiling
1593 default_keep_leaf_when_profiled ()
1598 /* Return true if the state of option OPTION should be stored in PCH files
1599 and checked by default_pch_valid_p. Store the option's current state
1603 option_affects_pch_p (int option
, struct cl_option_state
*state
)
1605 if ((cl_options
[option
].flags
& CL_TARGET
) == 0)
1607 if ((cl_options
[option
].flags
& CL_PCH_IGNORE
) != 0)
1609 if (option_flag_var (option
, &global_options
) == &target_flags
)
1610 if (targetm
.check_pch_target_flags
)
1612 return get_option_state (&global_options
, option
, state
);
1615 /* Default version of get_pch_validity.
1616 By default, every flag difference is fatal; that will be mostly right for
1617 most targets, but completely right for very few. */
1620 default_get_pch_validity (size_t *sz
)
1622 struct cl_option_state state
;
1627 if (targetm
.check_pch_target_flags
)
1628 *sz
+= sizeof (target_flags
);
1629 for (i
= 0; i
< cl_options_count
; i
++)
1630 if (option_affects_pch_p (i
, &state
))
1633 result
= r
= XNEWVEC (char, *sz
);
1637 if (targetm
.check_pch_target_flags
)
1639 memcpy (r
, &target_flags
, sizeof (target_flags
));
1640 r
+= sizeof (target_flags
);
1643 for (i
= 0; i
< cl_options_count
; i
++)
1644 if (option_affects_pch_p (i
, &state
))
1646 memcpy (r
, state
.data
, state
.size
);
1653 /* Return a message which says that a PCH file was created with a different
1654 setting of OPTION. */
1657 pch_option_mismatch (const char *option
)
1659 return xasprintf (_("created and used with differing settings of '%s'"),
1663 /* Default version of pch_valid_p. */
1666 default_pch_valid_p (const void *data_p
, size_t len
)
1668 struct cl_option_state state
;
1669 const char *data
= (const char *)data_p
;
1672 /* -fpic and -fpie also usually make a PCH invalid. */
1673 if (data
[0] != flag_pic
)
1674 return _("created and used with different settings of -fpic");
1675 if (data
[1] != flag_pie
)
1676 return _("created and used with different settings of -fpie");
1679 /* Check target_flags. */
1680 if (targetm
.check_pch_target_flags
)
1685 memcpy (&tf
, data
, sizeof (target_flags
));
1686 data
+= sizeof (target_flags
);
1687 len
-= sizeof (target_flags
);
1688 r
= targetm
.check_pch_target_flags (tf
);
1693 for (i
= 0; i
< cl_options_count
; i
++)
1694 if (option_affects_pch_p (i
, &state
))
1696 if (memcmp (data
, state
.data
, state
.size
) != 0)
1697 return pch_option_mismatch (cl_options
[i
].opt_text
);
1705 /* Default version of cstore_mode. */
1708 default_cstore_mode (enum insn_code icode
)
1710 return insn_data
[(int) icode
].operand
[0].mode
;
1713 /* Default version of member_type_forces_blk. */
1716 default_member_type_forces_blk (const_tree
, machine_mode
)
1722 default_load_bounds_for_arg (rtx addr ATTRIBUTE_UNUSED
,
1723 rtx ptr ATTRIBUTE_UNUSED
,
1724 rtx bnd ATTRIBUTE_UNUSED
)
1730 default_store_bounds_for_arg (rtx val ATTRIBUTE_UNUSED
,
1731 rtx addr ATTRIBUTE_UNUSED
,
1732 rtx bounds ATTRIBUTE_UNUSED
,
1733 rtx to ATTRIBUTE_UNUSED
)
1739 default_load_returned_bounds (rtx slot ATTRIBUTE_UNUSED
)
1745 default_store_returned_bounds (rtx slot ATTRIBUTE_UNUSED
,
1746 rtx bounds ATTRIBUTE_UNUSED
)
1751 /* Default version of canonicalize_comparison. */
1754 default_canonicalize_comparison (int *, rtx
*, rtx
*, bool)
1758 /* Default implementation of TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */
1761 default_atomic_assign_expand_fenv (tree
*, tree
*, tree
*)
1765 #ifndef PAD_VARARGS_DOWN
1766 #define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
1769 /* Build an indirect-ref expression over the given TREE, which represents a
1770 piece of a va_arg() expansion. */
1772 build_va_arg_indirect_ref (tree addr
)
1774 addr
= build_simple_mem_ref_loc (EXPR_LOCATION (addr
), addr
);
1778 /* The "standard" implementation of va_arg: read the value from the
1779 current (padded) address and increment by the (padded) size. */
1782 std_gimplify_va_arg_expr (tree valist
, tree type
, gimple_seq
*pre_p
,
1785 tree addr
, t
, type_size
, rounded_size
, valist_tmp
;
1786 unsigned HOST_WIDE_INT align
, boundary
;
1789 #if ARGS_GROW_DOWNWARD
1790 /* All of the alignment and movement below is for args-grow-up machines.
1791 As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
1792 implement their own specialized gimplify_va_arg_expr routines. */
1796 indirect
= pass_by_reference (NULL
, TYPE_MODE (type
), type
, false);
1798 type
= build_pointer_type (type
);
1800 align
= PARM_BOUNDARY
/ BITS_PER_UNIT
;
1801 boundary
= targetm
.calls
.function_arg_boundary (TYPE_MODE (type
), type
);
1803 /* When we align parameter on stack for caller, if the parameter
1804 alignment is beyond MAX_SUPPORTED_STACK_ALIGNMENT, it will be
1805 aligned at MAX_SUPPORTED_STACK_ALIGNMENT. We will match callee
1806 here with caller. */
1807 if (boundary
> MAX_SUPPORTED_STACK_ALIGNMENT
)
1808 boundary
= MAX_SUPPORTED_STACK_ALIGNMENT
;
1810 boundary
/= BITS_PER_UNIT
;
1812 /* Hoist the valist value into a temporary for the moment. */
1813 valist_tmp
= get_initialized_tmp_var (valist
, pre_p
, NULL
);
1815 /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
1816 requires greater alignment, we must perform dynamic alignment. */
1817 if (boundary
> align
1818 && !integer_zerop (TYPE_SIZE (type
)))
1820 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1821 fold_build_pointer_plus_hwi (valist_tmp
, boundary
- 1));
1822 gimplify_and_add (t
, pre_p
);
1824 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1825 fold_build2 (BIT_AND_EXPR
, TREE_TYPE (valist
),
1827 build_int_cst (TREE_TYPE (valist
), -boundary
)));
1828 gimplify_and_add (t
, pre_p
);
1833 /* If the actual alignment is less than the alignment of the type,
1834 adjust the type accordingly so that we don't assume strict alignment
1835 when dereferencing the pointer. */
1836 boundary
*= BITS_PER_UNIT
;
1837 if (boundary
< TYPE_ALIGN (type
))
1839 type
= build_variant_type_copy (type
);
1840 TYPE_ALIGN (type
) = boundary
;
1843 /* Compute the rounded size of the type. */
1844 type_size
= size_in_bytes (type
);
1845 rounded_size
= round_up (type_size
, align
);
1847 /* Reduce rounded_size so it's sharable with the postqueue. */
1848 gimplify_expr (&rounded_size
, pre_p
, post_p
, is_gimple_val
, fb_rvalue
);
1852 if (PAD_VARARGS_DOWN
&& !integer_zerop (rounded_size
))
1854 /* Small args are padded downward. */
1855 t
= fold_build2_loc (input_location
, GT_EXPR
, sizetype
,
1856 rounded_size
, size_int (align
));
1857 t
= fold_build3 (COND_EXPR
, sizetype
, t
, size_zero_node
,
1858 size_binop (MINUS_EXPR
, rounded_size
, type_size
));
1859 addr
= fold_build_pointer_plus (addr
, t
);
1862 /* Compute new value for AP. */
1863 t
= fold_build_pointer_plus (valist_tmp
, rounded_size
);
1864 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist
, t
);
1865 gimplify_and_add (t
, pre_p
);
1867 addr
= fold_convert (build_pointer_type (type
), addr
);
1870 addr
= build_va_arg_indirect_ref (addr
);
1872 return build_va_arg_indirect_ref (addr
);
1876 default_chkp_bound_type (void)
1878 tree res
= make_node (POINTER_BOUNDS_TYPE
);
1879 TYPE_PRECISION (res
) = TYPE_PRECISION (size_type_node
) * 2;
1880 TYPE_NAME (res
) = get_identifier ("__bounds_type");
1881 SET_TYPE_MODE (res
, targetm
.chkp_bound_mode ());
1887 default_chkp_bound_mode (void)
1893 default_builtin_chkp_function (unsigned int fcode ATTRIBUTE_UNUSED
)
1899 default_chkp_function_value_bounds (const_tree ret_type ATTRIBUTE_UNUSED
,
1900 const_tree fn_decl_or_type ATTRIBUTE_UNUSED
,
1901 bool outgoing ATTRIBUTE_UNUSED
)
1907 default_chkp_make_bounds_constant (HOST_WIDE_INT lb ATTRIBUTE_UNUSED
,
1908 HOST_WIDE_INT ub ATTRIBUTE_UNUSED
)
1914 default_chkp_initialize_bounds (tree var ATTRIBUTE_UNUSED
,
1915 tree lb ATTRIBUTE_UNUSED
,
1916 tree ub ATTRIBUTE_UNUSED
,
1917 tree
*stmts ATTRIBUTE_UNUSED
)
1923 default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED
,
1924 enum machine_mode mode ATTRIBUTE_UNUSED
,
1925 tree type ATTRIBUTE_UNUSED
,
1926 int *pretend_arg_size ATTRIBUTE_UNUSED
,
1927 int second_time ATTRIBUTE_UNUSED
)
1931 /* An implementation of TARGET_CAN_USE_DOLOOP_P for targets that do
1932 not support nested low-overhead loops. */
1935 can_use_doloop_if_innermost (const widest_int
&, const widest_int
&,
1936 unsigned int loop_depth
, bool)
1938 return loop_depth
== 1;
1941 #include "gt-targhooks.h"