1 /* Target-specific code for C family languages.
2 Copyright (C) 2015-2016 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
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/>. */
22 #include "coretypes.h"
28 #include "c-family/c-common.h"
30 #include "c-family/c-pragma.h"
31 #include "langhooks.h"
35 #define builtin_define(TXT) cpp_define (pfile, TXT)
36 #define builtin_assert(TXT) cpp_assert (pfile, TXT)
40 aarch64_def_or_undef (bool def_p
, const char *macro
, cpp_reader
*pfile
)
43 cpp_define (pfile
, macro
);
45 cpp_undef (pfile
, macro
);
48 /* Define the macros that we always expect to have on AArch64. */
51 aarch64_define_unconditional_macros (cpp_reader
*pfile
)
53 builtin_define ("__aarch64__");
54 builtin_define ("__ARM_64BIT_STATE");
56 builtin_define ("__ARM_ARCH_ISA_A64");
57 builtin_define_with_int_value ("__ARM_ALIGN_MAX_PWR", 28);
58 builtin_define_with_int_value ("__ARM_ALIGN_MAX_STACK_PWR", 16);
60 /* __ARM_ARCH_8A is not mandated by ACLE but we define it unconditionally
61 as interoperability with the same arm macro. */
62 builtin_define ("__ARM_ARCH_8A");
64 builtin_define_with_int_value ("__ARM_ARCH_PROFILE", 'A');
65 builtin_define ("__ARM_FEATURE_CLZ");
66 builtin_define ("__ARM_FEATURE_IDIV");
67 builtin_define ("__ARM_FEATURE_UNALIGNED");
68 builtin_define ("__ARM_PCS_AAPCS64");
69 builtin_define_with_int_value ("__ARM_SIZEOF_WCHAR_T", WCHAR_TYPE_SIZE
/ 8);
72 /* Undefine/redefine macros that depend on the current backend state and may
73 need to change when a target pragma modifies the backend state. */
76 aarch64_update_cpp_builtins (cpp_reader
*pfile
)
78 aarch64_def_or_undef (flag_unsafe_math_optimizations
, "__ARM_FP_FAST", pfile
);
80 builtin_define_with_int_value ("__ARM_ARCH", aarch64_architecture_version
);
82 builtin_define_with_int_value ("__ARM_SIZEOF_MINIMAL_ENUM",
83 flag_short_enums
? 1 : 4);
84 aarch64_def_or_undef (TARGET_BIG_END
, "__AARCH64EB__", pfile
);
85 aarch64_def_or_undef (TARGET_BIG_END
, "__ARM_BIG_ENDIAN", pfile
);
86 aarch64_def_or_undef (!TARGET_BIG_END
, "__AARCH64EL__", pfile
);
88 aarch64_def_or_undef (TARGET_FLOAT
, "__ARM_FEATURE_FMA", pfile
);
90 if (TARGET_FLOAT
|| TARGET_SIMD
)
92 builtin_define_with_int_value ("__ARM_FP", 0x0E);
93 builtin_define ("__ARM_FP16_FORMAT_IEEE");
94 builtin_define ("__ARM_FP16_ARGS");
97 cpp_undef (pfile
, "__ARM_FP");
99 aarch64_def_or_undef (TARGET_FP_F16INST
,
100 "__ARM_FEATURE_FP16_SCALAR_ARITHMETIC", pfile
);
101 aarch64_def_or_undef (TARGET_SIMD_F16INST
,
102 "__ARM_FEATURE_FP16_VECTOR_ARITHMETIC", pfile
);
104 aarch64_def_or_undef (TARGET_SIMD
, "__ARM_FEATURE_NUMERIC_MAXMIN", pfile
);
105 aarch64_def_or_undef (TARGET_SIMD
, "__ARM_NEON", pfile
);
108 aarch64_def_or_undef (TARGET_CRC32
, "__ARM_FEATURE_CRC32", pfile
);
110 cpp_undef (pfile
, "__AARCH64_CMODEL_TINY__");
111 cpp_undef (pfile
, "__AARCH64_CMODEL_SMALL__");
112 cpp_undef (pfile
, "__AARCH64_CMODEL_LARGE__");
114 switch (aarch64_cmodel
)
116 case AARCH64_CMODEL_TINY
:
117 case AARCH64_CMODEL_TINY_PIC
:
118 builtin_define ("__AARCH64_CMODEL_TINY__");
120 case AARCH64_CMODEL_SMALL
:
121 case AARCH64_CMODEL_SMALL_PIC
:
122 builtin_define ("__AARCH64_CMODEL_SMALL__");
124 case AARCH64_CMODEL_LARGE
:
125 builtin_define ("__AARCH64_CMODEL_LARGE__");
131 aarch64_def_or_undef (TARGET_ILP32
, "_ILP32", pfile
);
132 aarch64_def_or_undef (TARGET_ILP32
, "__ILP32__", pfile
);
134 aarch64_def_or_undef (TARGET_CRYPTO
, "__ARM_FEATURE_CRYPTO", pfile
);
135 aarch64_def_or_undef (TARGET_SIMD_RDMA
, "__ARM_FEATURE_QRDMX", pfile
);
137 /* Not for ACLE, but required to keep "float.h" correct if we switch
138 target between implementations that do or do not support ARMv8.2-A
139 16-bit floating-point extensions. */
140 cpp_undef (pfile
, "__FLT_EVAL_METHOD__");
141 builtin_define_with_int_value ("__FLT_EVAL_METHOD__",
142 c_flt_eval_method (true));
143 cpp_undef (pfile
, "__FLT_EVAL_METHOD_C99__");
144 builtin_define_with_int_value ("__FLT_EVAL_METHOD_C99__",
145 c_flt_eval_method (false));
148 /* Implement TARGET_CPU_CPP_BUILTINS. */
151 aarch64_cpu_cpp_builtins (cpp_reader
*pfile
)
153 aarch64_define_unconditional_macros (pfile
);
154 aarch64_update_cpp_builtins (pfile
);
157 /* Hook to validate the current #pragma GCC target and set the state, and
158 update the macros based on what was changed. If ARGS is NULL, then
159 POP_TARGET is used to reset the options. */
162 aarch64_pragma_target_parse (tree args
, tree pop_target
)
164 /* If args is not NULL then process it and setup the target-specific
165 information that it specifies. */
168 if (!aarch64_process_target_attr (args
, "pragma"))
171 aarch64_override_options_internal (&global_options
);
174 /* args is NULL, restore to the state described in pop_target. */
177 pop_target
= pop_target
? pop_target
: target_option_default_node
;
178 cl_target_option_restore (&global_options
,
179 TREE_TARGET_OPTION (pop_target
));
182 target_option_current_node
183 = build_target_option_node (&global_options
);
185 aarch64_reset_previous_fndecl ();
186 /* For the definitions, ensure all newly defined macros are considered
187 as used for -Wunused-macros. There is no point warning about the
188 compiler predefined macros. */
189 cpp_options
*cpp_opts
= cpp_get_options (parse_in
);
190 unsigned char saved_warn_unused_macros
= cpp_opts
->warn_unused_macros
;
191 cpp_opts
->warn_unused_macros
= 0;
193 aarch64_update_cpp_builtins (parse_in
);
195 cpp_opts
->warn_unused_macros
= saved_warn_unused_macros
;
197 /* If we're popping or reseting make sure to update the globals so that
198 the optab availability predicates get recomputed. */
200 aarch64_save_restore_target_globals (pop_target
);
202 /* Initialize SIMD builtins if we haven't already.
203 Set current_target_pragma to NULL for the duration so that
204 the builtin initialization code doesn't try to tag the functions
205 being built with the attributes specified by any current pragma, thus
206 going into an infinite recursion. */
209 tree saved_current_target_pragma
= current_target_pragma
;
210 current_target_pragma
= NULL
;
211 aarch64_init_simd_builtins ();
212 current_target_pragma
= saved_current_target_pragma
;
218 /* Implement REGISTER_TARGET_PRAGMAS. */
221 aarch64_register_pragmas (void)
223 /* Update pragma hook to allow parsing #pragma GCC target. */
224 targetm
.target_option
.pragma_parse
= aarch64_pragma_target_parse
;