1 /* Target-specific code for C family languages. 2 Copyright (C) 2015-2021 Free Software Foundation, Inc. 3 4 This file is part of GCC. test_direct_product_n()5 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) 9 any later version. 10 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. 15 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/>. */ 19 20 #define IN_TARGET_CODE 1 21 22 #include "config.h" 23 #include "system.h" 24 #include "coretypes.h" 25 #include "tm.h" 26 #include "input.h" 27 #include "memmodel.h" 28 #include "tm_p.h" 29 #include "flags.h" 30 #include "c-family/c-common.h" 31 #include "cpplib.h" 32 #include "c-family/c-pragma.h" 33 #include "langhooks.h" 34 #include "target.h" 35 36 37 #define builtin_define(TXT) cpp_define (pfile, TXT) 38 #define builtin_assert(TXT) cpp_assert (pfile, TXT) 39 40 41 static void 42 aarch64_def_or_undef (bool def_p, const char *macro, cpp_reader *pfile) 43 { 44 if (def_p) 45 cpp_define (pfile, macro); 46 else 47 cpp_undef (pfile, macro); 48 } 49 50 /* Define the macros that we always expect to have on AArch64. */ 51 52 static void 53 aarch64_define_unconditional_macros (cpp_reader *pfile) 54 { 55 builtin_define ("__aarch64__"); 56 builtin_define ("__ARM_64BIT_STATE"); 57 58 builtin_define ("__ARM_ARCH_ISA_A64"); 59 builtin_define_with_int_value ("__ARM_ALIGN_MAX_PWR", 28); 60 builtin_define_with_int_value ("__ARM_ALIGN_MAX_STACK_PWR", 16); 61 62 /* __ARM_ARCH_8A is not mandated by ACLE but we define it unconditionally 63 as interoperability with the same arm macro. */ 64 builtin_define ("__ARM_ARCH_8A"); 65 66 builtin_define_with_int_value ("__ARM_ARCH_PROFILE", 67 AARCH64_ISA_V8_R ? 'R' : 'A'); 68 builtin_define ("__ARM_FEATURE_CLZ"); 69 builtin_define ("__ARM_FEATURE_IDIV"); 70 builtin_define ("__ARM_FEATURE_UNALIGNED"); 71 builtin_define ("__ARM_PCS_AAPCS64"); 72 builtin_define_with_int_value ("__ARM_SIZEOF_WCHAR_T", WCHAR_TYPE_SIZE / 8); 73 74 builtin_define ("__GCC_ASM_FLAG_OUTPUTS__"); 75 } 76 77 /* Undefine/redefine macros that depend on the current backend state and may 78 need to change when a target pragma modifies the backend state. */ 79 80 static void 81 aarch64_update_cpp_builtins (cpp_reader *pfile) 82 { 83 aarch64_def_or_undef (flag_unsafe_math_optimizations, "__ARM_FP_FAST", pfile); 84 85 builtin_define_with_int_value ("__ARM_ARCH", aarch64_architecture_version); 86 87 builtin_define_with_int_value ("__ARM_SIZEOF_MINIMAL_ENUM", 88 flag_short_enums ? 1 : 4); 89 aarch64_def_or_undef (TARGET_BIG_END, "__AARCH64EB__", pfile); 90 aarch64_def_or_undef (TARGET_BIG_END, "__ARM_BIG_ENDIAN", pfile); 91 aarch64_def_or_undef (!TARGET_BIG_END, "__AARCH64EL__", pfile); 92 93 aarch64_def_or_undef (TARGET_FLOAT, "__ARM_FEATURE_FMA", pfile); 94 95 if (TARGET_FLOAT || TARGET_SIMD) 96 { 97 builtin_define_with_int_value ("__ARM_FP", 0x0E); 98 builtin_define ("__ARM_FP16_FORMAT_IEEE"); 99 builtin_define ("__ARM_FP16_ARGS"); 100 } 101 else 102 cpp_undef (pfile, "__ARM_FP"); 103 104 aarch64_def_or_undef (TARGET_FP_F16INST, 105 "__ARM_FEATURE_FP16_SCALAR_ARITHMETIC", pfile); 106 aarch64_def_or_undef (TARGET_SIMD_F16INST, 107 "__ARM_FEATURE_FP16_VECTOR_ARITHMETIC", pfile); 108 109 aarch64_def_or_undef (TARGET_SIMD, "__ARM_FEATURE_NUMERIC_MAXMIN", pfile); 110 aarch64_def_or_undef (TARGET_SIMD, "__ARM_NEON", pfile); 111 112 113 aarch64_def_or_undef (TARGET_CRC32, "__ARM_FEATURE_CRC32", pfile); 114 aarch64_def_or_undef (TARGET_DOTPROD, "__ARM_FEATURE_DOTPROD", pfile); 115 aarch64_def_or_undef (TARGET_COMPLEX, "__ARM_FEATURE_COMPLEX", pfile); 116 aarch64_def_or_undef (TARGET_JSCVT, "__ARM_FEATURE_JCVT", pfile); 117 118 cpp_undef (pfile, "__AARCH64_CMODEL_TINY__"); 119 cpp_undef (pfile, "__AARCH64_CMODEL_SMALL__"); 120 cpp_undef (pfile, "__AARCH64_CMODEL_LARGE__"); 121 122 switch (aarch64_cmodel) 123 { 124 case AARCH64_CMODEL_TINY: 125 case AARCH64_CMODEL_TINY_PIC: 126 builtin_define ("__AARCH64_CMODEL_TINY__"); 127 break; 128 case AARCH64_CMODEL_SMALL: 129 case AARCH64_CMODEL_SMALL_PIC: 130 builtin_define ("__AARCH64_CMODEL_SMALL__"); 131 break; 132 case AARCH64_CMODEL_LARGE: 133 builtin_define ("__AARCH64_CMODEL_LARGE__"); 134 break; 135 default: 136 break; 137 } 138 139 aarch64_def_or_undef (TARGET_ILP32, "_ILP32", pfile); 140 aarch64_def_or_undef (TARGET_ILP32, "__ILP32__", pfile); 141 142 aarch64_def_or_undef (TARGET_CRYPTO, "__ARM_FEATURE_CRYPTO", pfile); 143 aarch64_def_or_undef (TARGET_SIMD_RDMA, "__ARM_FEATURE_QRDMX", pfile); 144 aarch64_def_or_undef (TARGET_SVE, "__ARM_FEATURE_SVE", pfile); 145 cpp_undef (pfile, "__ARM_FEATURE_SVE_BITS"); 146 if (TARGET_SVE) 147 { 148 int bits; 149 if (!BITS_PER_SVE_VECTOR.is_constant (&bits)) 150 bits = 0; 151 builtin_define_with_int_value ("__ARM_FEATURE_SVE_BITS", bits); 152 } 153 aarch64_def_or_undef (TARGET_SVE, "__ARM_FEATURE_SVE_VECTOR_OPERATORS", 154 pfile); 155 aarch64_def_or_undef (TARGET_SVE_I8MM, 156 "__ARM_FEATURE_SVE_MATMUL_INT8", pfile); 157 aarch64_def_or_undef (TARGET_SVE_F32MM, 158 "__ARM_FEATURE_SVE_MATMUL_FP32", pfile); 159 aarch64_def_or_undef (TARGET_SVE_F64MM, 160 "__ARM_FEATURE_SVE_MATMUL_FP64", pfile); 161 aarch64_def_or_undef (TARGET_SVE2, "__ARM_FEATURE_SVE2", pfile); 162 aarch64_def_or_undef (TARGET_SVE2_AES, "__ARM_FEATURE_SVE2_AES", pfile); 163 aarch64_def_or_undef (TARGET_SVE2_BITPERM, 164 "__ARM_FEATURE_SVE2_BITPERM", pfile); 165 aarch64_def_or_undef (TARGET_SVE2_SHA3, "__ARM_FEATURE_SVE2_SHA3", pfile); 166 aarch64_def_or_undef (TARGET_SVE2_SM4, "__ARM_FEATURE_SVE2_SM4", pfile); 167 168 aarch64_def_or_undef (TARGET_LSE, "__ARM_FEATURE_ATOMICS", pfile); 169 aarch64_def_or_undef (TARGET_AES, "__ARM_FEATURE_AES", pfile); 170 aarch64_def_or_undef (TARGET_SHA2, "__ARM_FEATURE_SHA2", pfile); 171 aarch64_def_or_undef (TARGET_SHA3, "__ARM_FEATURE_SHA3", pfile); 172 aarch64_def_or_undef (TARGET_SHA3, "__ARM_FEATURE_SHA512", pfile); 173 aarch64_def_or_undef (TARGET_SM4, "__ARM_FEATURE_SM3", pfile); 174 aarch64_def_or_undef (TARGET_SM4, "__ARM_FEATURE_SM4", pfile); 175 aarch64_def_or_undef (TARGET_F16FML, "__ARM_FEATURE_FP16_FML", pfile); 176 177 aarch64_def_or_undef (TARGET_FRINT, "__ARM_FEATURE_FRINT", pfile); 178 aarch64_def_or_undef (TARGET_TME, "__ARM_FEATURE_TME", pfile); 179 aarch64_def_or_undef (TARGET_RNG, "__ARM_FEATURE_RNG", pfile); 180 aarch64_def_or_undef (TARGET_MEMTAG, "__ARM_FEATURE_MEMORY_TAGGING", pfile); 181 182 aarch64_def_or_undef (aarch64_bti_enabled (), 183 "__ARM_FEATURE_BTI_DEFAULT", pfile); 184 185 cpp_undef (pfile, "__ARM_FEATURE_PAC_DEFAULT"); 186 if (aarch64_ra_sign_scope != AARCH64_FUNCTION_NONE) 187 { 188 int v = 0; 189 if (aarch64_ra_sign_key == AARCH64_KEY_A) 190 v |= 1; 191 if (aarch64_ra_sign_key == AARCH64_KEY_B) 192 v |= 2; 193 if (aarch64_ra_sign_scope == AARCH64_FUNCTION_ALL) 194 v |= 4; 195 builtin_define_with_int_value ("__ARM_FEATURE_PAC_DEFAULT", v); 196 } 197 198 aarch64_def_or_undef (TARGET_I8MM, "__ARM_FEATURE_MATMUL_INT8", pfile); 199 aarch64_def_or_undef (TARGET_BF16_SIMD, 200 "__ARM_FEATURE_BF16_VECTOR_ARITHMETIC", pfile); 201 aarch64_def_or_undef (TARGET_BF16_FP, 202 "__ARM_FEATURE_BF16_SCALAR_ARITHMETIC", pfile); 203 204 /* Not for ACLE, but required to keep "float.h" correct if we switch 205 target between implementations that do or do not support ARMv8.2-A 206 16-bit floating-point extensions. */ 207 cpp_undef (pfile, "__FLT_EVAL_METHOD__"); 208 builtin_define_with_int_value ("__FLT_EVAL_METHOD__", 209 c_flt_eval_method (true)); 210 cpp_undef (pfile, "__FLT_EVAL_METHOD_C99__"); 211 builtin_define_with_int_value ("__FLT_EVAL_METHOD_C99__", 212 c_flt_eval_method (false)); 213 } 214 215 /* Implement TARGET_CPU_CPP_BUILTINS. */ 216 217 void 218 aarch64_cpu_cpp_builtins (cpp_reader *pfile) 219 { 220 aarch64_define_unconditional_macros (pfile); 221 aarch64_update_cpp_builtins (pfile); 222 } 223 224 /* Hook to validate the current #pragma GCC target and set the state, and 225 update the macros based on what was changed. If ARGS is NULL, then 226 POP_TARGET is used to reset the options. */ 227 228 static bool 229 aarch64_pragma_target_parse (tree args, tree pop_target) 230 { 231 /* If args is not NULL then process it and setup the target-specific 232 information that it specifies. */ 233 if (args) 234 { 235 if (!aarch64_process_target_attr (args)) 236 return false; 237 238 aarch64_override_options_internal (&global_options); 239 } 240 241 /* args is NULL, restore to the state described in pop_target. */ 242 else 243 { 244 pop_target = pop_target ? pop_target : target_option_default_node; 245 cl_target_option_restore (&global_options, &global_options_set, 246 TREE_TARGET_OPTION (pop_target)); 247 } 248 249 target_option_current_node 250 = build_target_option_node (&global_options, &global_options_set); 251 252 aarch64_reset_previous_fndecl (); 253 /* For the definitions, ensure all newly defined macros are considered 254 as used for -Wunused-macros. There is no point warning about the 255 compiler predefined macros. */ 256 cpp_options *cpp_opts = cpp_get_options (parse_in); 257 unsigned char saved_warn_unused_macros = cpp_opts->warn_unused_macros; 258 cpp_opts->warn_unused_macros = 0; 259 260 aarch64_update_cpp_builtins (parse_in); 261 262 cpp_opts->warn_unused_macros = saved_warn_unused_macros; 263 264 /* If we're popping or reseting make sure to update the globals so that 265 the optab availability predicates get recomputed. */ 266 if (pop_target) 267 aarch64_save_restore_target_globals (pop_target); 268 269 /* Initialize SIMD builtins if we haven't already. 270 Set current_target_pragma to NULL for the duration so that 271 the builtin initialization code doesn't try to tag the functions 272 being built with the attributes specified by any current pragma, thus 273 going into an infinite recursion. */ 274 if (TARGET_SIMD) 275 { 276 tree saved_current_target_pragma = current_target_pragma; 277 current_target_pragma = NULL; 278 aarch64_init_simd_builtins (); 279 current_target_pragma = saved_current_target_pragma; 280 } 281 282 return true; 283 } 284 285 /* Implement "#pragma GCC aarch64". */ 286 static void 287 aarch64_pragma_aarch64 (cpp_reader *) 288 { 289 tree x; 290 if (pragma_lex (&x) != CPP_STRING) 291 { 292 error ("%<#pragma GCC aarch64%> requires a string parameter"); 293 return; 294 } 295 296 const char *name = TREE_STRING_POINTER (x); 297 if (strcmp (name, "arm_sve.h") == 0) 298 aarch64_sve::handle_arm_sve_h (); 299 else 300 error ("unknown %<#pragma GCC aarch64%> option %qs", name); 301 } 302 303 /* Implement TARGET_RESOLVE_OVERLOADED_BUILTIN. */ 304 static tree 305 aarch64_resolve_overloaded_builtin (unsigned int uncast_location, 306 tree fndecl, void *uncast_arglist) 307 { 308 vec<tree, va_gc> empty = {}; 309 location_t location = (location_t) uncast_location; 310 vec<tree, va_gc> *arglist = (uncast_arglist 311 ? (vec<tree, va_gc> *) uncast_arglist 312 : &empty); 313 unsigned int code = DECL_MD_FUNCTION_CODE (fndecl); 314 unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; 315 tree new_fndecl; 316 switch (code & AARCH64_BUILTIN_CLASS) 317 { 318 case AARCH64_BUILTIN_GENERAL: 319 return aarch64_resolve_overloaded_builtin_general (location, fndecl, 320 uncast_arglist); 321 case AARCH64_BUILTIN_SVE: 322 new_fndecl = aarch64_sve::resolve_overloaded_builtin (location, subcode, 323 arglist); 324 break; 325 } 326 if (new_fndecl == NULL_TREE || new_fndecl == error_mark_node) 327 return new_fndecl; 328 return build_function_call_vec (location, vNULL, new_fndecl, arglist, 329 NULL, fndecl); 330 } 331 332 /* Implement TARGET_CHECK_BUILTIN_CALL. */ 333 static bool 334 aarch64_check_builtin_call (location_t loc, vec<location_t> arg_loc, 335 tree fndecl, tree orig_fndecl, 336 unsigned int nargs, tree *args) 337 { 338 unsigned int code = DECL_MD_FUNCTION_CODE (fndecl); 339 unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; 340 switch (code & AARCH64_BUILTIN_CLASS) 341 { 342 case AARCH64_BUILTIN_GENERAL: 343 return true; 344 345 case AARCH64_BUILTIN_SVE: 346 return aarch64_sve::check_builtin_call (loc, arg_loc, subcode, 347 orig_fndecl, nargs, args); 348 } 349 gcc_unreachable (); 350 } 351 352 /* Implement REGISTER_TARGET_PRAGMAS. */ 353 354 void 355 aarch64_register_pragmas (void) 356 { 357 /* Update pragma hook to allow parsing #pragma GCC target. */ 358 targetm.target_option.pragma_parse = aarch64_pragma_target_parse; 359 360 targetm.resolve_overloaded_builtin = aarch64_resolve_overloaded_builtin; 361 targetm.check_builtin_call = aarch64_check_builtin_call; 362 363 c_register_pragma ("GCC", "aarch64", aarch64_pragma_aarch64); 364 } 365