gcc/builtins.def

   1 /* This file contains the definitions and documentation for the
   2    builtins used in the GNU compiler.
   3    Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 /* Before including this file, you should define a macro:
  23
  24      DEF_BUILTIN (ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P,
  25                   FALLBACK_P, NONANSI_P, ATTRS, IMPLICIT)
  26
  27    This macro will be called once for each builtin function.  The
  28    ENUM will be of type `enum built_in_function', and will indicate
  29    which builtin function is being processed.  The NAME of the builtin
  30    function (which will always start with `__builtin_') is a string
  31    literal.  The CLASS is of type `enum built_in_class' and indicates
  32    what kind of builtin is being processed.
  33
  34    Some builtins are actually two separate functions.  For example,
  35    for `strcmp' there are two builtin functions; `__builtin_strcmp'
  36    and `strcmp' itself.  Both behave identically.  Other builtins
  37    define only the `__builtin' variant.  If BOTH_P is TRUE, then this
  38    builtin has both variants; otherwise, it is has only the first
  39    variant.
  40
  41    TYPE indicates the type of the function.  The symbols correspond to
  42    enumerals from builtin-types.def.  If BOTH_P is true, then LIBTYPE
  43    is the type of the non-`__builtin_' variant.  Otherwise, LIBTYPE
  44    should be ignored.
  45
  46    If FALLBACK_P is true then, if for some reason, the compiler cannot
  47    expand the builtin function directly, it will call the
  48    corresponding library function (which does not have the
  49    `__builtin_' prefix.
  50
  51    If NONANSI_P is true, then the non-`__builtin_' variant is not an
  52    ANSI/ISO library function, and so we should pretend it does not
  53    exist when compiling in ANSI conformant mode.
  54
  55    ATTRs is an attribute list as defined in builtin-attrs.def that
  56    describes the attributes of this builtin function.
  57
  58    IMPLICIT specifies condition when the builtin can be produced by
  59    compiler.  For instance C90 reserves floorf function, but does not
  60    define it's meaning.  When user uses floorf we may assume that the
  61    floorf has the meaning we expect, but we can't produce floorf by
  62    simplifying floor((double)float) since the runtime need not implement
  63    it.  */
  64
  65 /* A GCC builtin (like __builtin_saveregs) is provided by the
  66    compiler, but does not correspond to a function in the standard
  67    library.  */
  68 #undef DEF_GCC_BUILTIN
  69 #define DEF_GCC_BUILTIN(ENUM, NAME, TYPE, ATTRS)                \
  70   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, BT_LAST,      \
  71                false, false, false, ATTRS, true)
  72
  73
  74 /* A fallback builtin is a builtin (like __builtin_puts) that falls
  75    back to the corresopnding library function if necessary -- but
  76    for which we should not introduce the non-`__builtin' variant of
  77    the name.  */
  78 #undef DEF_FALLBACK_BUILTIN
  79 #define DEF_FALLBACK_BUILTIN(ENUM, NAME, TYPE, ATTRS)   \
  80   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  81                false, true, false, ATTRS, true)
  82
  83 /* Like DEF_FALLBACK_BUILTIN, except that the function is not one that
  84    is specified by ANSI/ISO C.  So, when we're being fully conformant
  85    we ignore the version of these builtins that does not begin with
  86    __builtin.  */
  87 #undef DEF_EXT_FALLBACK_BUILTIN
  88 #define DEF_EXT_FALLBACK_BUILTIN(ENUM, NAME, TYPE, ATTRS)       \
  89   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  90                false, true, true, ATTRS, true)
  91
  92 /* A library builtin (like __builtin_strchr) is a builtin equivalent
  93    of an ANSI/ISO standard library function.  In addition to the
  94    `__builtin' version, we will create an ordinary version (e.g,
  95    `strchr') as well.  If we cannot compute the answer using the
  96    builtin function, we will fall back to the standard library
  97    version.  */
  98 #undef DEF_LIB_BUILTIN
  99 #define DEF_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
 100   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 101                true, true, false, ATTRS, true)
 102
 103 /* Like DEF_LIB_BUILTIN, except that the function is not one that is
 104    specified by ANSI/ISO C.  So, when we're being fully conformant we
 105    ignore the version of these builtins that does not begin with
 106    __builtin.  */
 107 #undef DEF_EXT_LIB_BUILTIN
 108 #define DEF_EXT_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)    \
 109   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 110                true, true, true, ATTRS, false)
 111
 112 /* Like DEF_LIB_BUILTIN, except that the function is only a part of
 113    the standard in C99 or above.  */
 114 #undef DEF_C99_BUILTIN
 115 #define DEF_C99_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
 116   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 117                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 118
 119 /* Builtin that is specified by C99 and C90 reserve the name for future use.
 120    We can still recognize the builtin in C90 mode but we can't produce it
 121    implicitly.  */
 122 #undef DEF_C99_C90RES_BUILTIN
 123 #define DEF_C99_C90RES_BUILTIN(ENUM, NAME, TYPE, ATTRS) \
 124   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 125                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 126
 127 /* Like DEF_LIB_BUILTIN, except that the function is expanded in the
 128    front-end.  */
 129 #undef DEF_FRONT_END_LIB_BUILTIN
 130 #define DEF_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)      \
 131   DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE,       \
 132                true, true, false, ATTRS, true)
 133
 134 /* Like DEF_FRONT_END_LIB_BUILTIN, except that the function is not one
 135    that is specified by ANSI/ISO C.  So, when we're being fully
 136    conformant we ignore the version of these builtins that does not
 137    begin with __builtin.  */
 138 #undef DEF_EXT_FRONT_END_LIB_BUILTIN
 139 #define DEF_EXT_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)  \
 140   DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE,       \
 141                true, true, true, ATTRS, true)
 142
 143 /* If SMALL_STACK is defined, then `alloca' is only defined in its
 144    `__builtin' form.  */
 145 #if SMALL_STACK
 146 DEF_FALLBACK_BUILTIN(BUILT_IN_ALLOCA,
 147                      "__builtin_alloca",
 148                      BT_FN_PTR_SIZE,
 149                      ATTR_MALLOC_NOTHROW_LIST)
 150 #else
 151 DEF_EXT_LIB_BUILTIN(BUILT_IN_ALLOCA,
 152                     "__builtin_alloca",
 153                     BT_FN_PTR_SIZE,
 154                     ATTR_MALLOC_NOTHROW_LIST)
 155 #endif
 156
 157 DEF_LIB_BUILTIN(BUILT_IN_ABS,
 158                 "__builtin_abs",
 159                 BT_FN_INT_INT,
 160                 ATTR_CONST_NOTHROW_LIST)
 161 DEF_LIB_BUILTIN(BUILT_IN_LABS,
 162                 "__builtin_labs",
 163                 BT_FN_LONG_LONG,
 164                 ATTR_CONST_NOTHROW_LIST)
 165
 166 DEF_LIB_BUILTIN(BUILT_IN_FABS,
 167                 "__builtin_fabs",
 168                 BT_FN_DOUBLE_DOUBLE,
 169                 ATTR_CONST_NOTHROW_LIST)
 170 DEF_C99_C90RES_BUILTIN(BUILT_IN_FABSF,
 171                        "__builtin_fabsf",
 172                        BT_FN_FLOAT_FLOAT,
 173                        ATTR_CONST_NOTHROW_LIST)
 174 DEF_C99_C90RES_BUILTIN(BUILT_IN_FABSL,
 175                        "__builtin_fabsl",
 176                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 177                        ATTR_CONST_NOTHROW_LIST)
 178
 179 DEF_LIB_BUILTIN(BUILT_IN_FLOOR,
 180                 "__builtin_floor",
 181                 BT_FN_DOUBLE_DOUBLE,
 182                 ATTR_CONST_NOTHROW_LIST)
 183 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORF,
 184                        "__builtin_floorf",
 185                        BT_FN_FLOAT_FLOAT,
 186                        ATTR_CONST_NOTHROW_LIST)
 187 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORL,
 188                        "__builtin_floorl",
 189                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 190                        ATTR_CONST_NOTHROW_LIST)
 191
 192 DEF_LIB_BUILTIN(BUILT_IN_CEIL,
 193                 "__builtin_ceil",
 194                 BT_FN_DOUBLE_DOUBLE,
 195                 ATTR_CONST_NOTHROW_LIST)
 196 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILF,
 197                        "__builtin_ceilf",
 198                        BT_FN_FLOAT_FLOAT,
 199                        ATTR_CONST_NOTHROW_LIST)
 200 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILL,
 201                        "__builtin_ceill",
 202                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 203                        ATTR_CONST_NOTHROW_LIST)
 204
 205 DEF_C99_BUILTIN(BUILT_IN_ROUND,
 206                 "__builtin_round",
 207                 BT_FN_DOUBLE_DOUBLE,
 208                 ATTR_CONST_NOTHROW_LIST)
 209 DEF_C99_BUILTIN(BUILT_IN_ROUNDF,
 210                 "__builtin_roundf",
 211                 BT_FN_FLOAT_FLOAT,
 212                 ATTR_CONST_NOTHROW_LIST)
 213 DEF_C99_BUILTIN(BUILT_IN_ROUNDL,
 214                 "__builtin_roundl",
 215                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 216                 ATTR_CONST_NOTHROW_LIST)
 217
 218 DEF_C99_BUILTIN(BUILT_IN_TRUNC,
 219                 "__builtin_trunc",
 220                 BT_FN_DOUBLE_DOUBLE,
 221                 ATTR_CONST_NOTHROW_LIST)
 222 DEF_C99_BUILTIN(BUILT_IN_TRUNCF,
 223                 "__builtin_truncf",
 224                 BT_FN_FLOAT_FLOAT,
 225                 ATTR_CONST_NOTHROW_LIST)
 226 DEF_C99_BUILTIN(BUILT_IN_TRUNCL,
 227                 "__builtin_truncl",
 228                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 229                 ATTR_CONST_NOTHROW_LIST)
 230
 231 DEF_C99_BUILTIN(BUILT_IN_NEARBYINT,
 232                 "__builtin_nearbyint",
 233                 BT_FN_DOUBLE_DOUBLE,
 234                 ATTR_CONST_NOTHROW_LIST)
 235 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTF,
 236                 "__builtin_nearbyintf",
 237                 BT_FN_FLOAT_FLOAT,
 238                 ATTR_CONST_NOTHROW_LIST)
 239 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTL,
 240                 "__builtin_nearbyintl",
 241                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 242                 ATTR_CONST_NOTHROW_LIST)
 243
 244 DEF_C99_BUILTIN(BUILT_IN_LLABS,
 245                 "__builtin_llabs",
 246                 BT_FN_LONGLONG_LONGLONG,
 247                 ATTR_CONST_NOTHROW_LIST)
 248 DEF_C99_BUILTIN(BUILT_IN_IMAXABS,
 249                 "__builtin_imaxabs",
 250                 BT_FN_INTMAX_INTMAX,
 251                 ATTR_CONST_NOTHROW_LIST)
 252 DEF_C99_BUILTIN(BUILT_IN_CONJ,
 253                 "__builtin_conj",
 254                 BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
 255                 ATTR_CONST_NOTHROW_LIST)
 256 DEF_C99_BUILTIN(BUILT_IN_CONJF,
 257                 "__builtin_conjf",
 258                 BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT,
 259                 ATTR_CONST_NOTHROW_LIST)
 260 DEF_C99_BUILTIN(BUILT_IN_CONJL,
 261                 "__builtin_conjl",
 262                 BT_FN_COMPLEX_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 263                 ATTR_CONST_NOTHROW_LIST)
 264 DEF_C99_BUILTIN(BUILT_IN_CREAL,
 265                 "__builtin_creal",
 266                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 267                 ATTR_CONST_NOTHROW_LIST)
 268 DEF_C99_BUILTIN(BUILT_IN_CREALF,
 269                 "__builtin_crealf",
 270                 BT_FN_FLOAT_COMPLEX_FLOAT,
 271                 ATTR_CONST_NOTHROW_LIST)
 272 DEF_C99_BUILTIN(BUILT_IN_CREALL,
 273                 "__builtin_creall",
 274                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 275                 ATTR_CONST_NOTHROW_LIST)
 276 DEF_C99_BUILTIN(BUILT_IN_CIMAG,
 277                 "__builtin_cimag",
 278                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 279                 ATTR_CONST_NOTHROW_LIST)
 280 DEF_C99_BUILTIN(BUILT_IN_CIMAGF,
 281                 "__builtin_cimagf",
 282                 BT_FN_FLOAT_COMPLEX_FLOAT,
 283                 ATTR_CONST_NOTHROW_LIST)
 284 DEF_C99_BUILTIN(BUILT_IN_CIMAGL,
 285                 "__builtin_cimagl",
 286                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 287                 ATTR_CONST_NOTHROW_LIST)
 288 DEF_C99_BUILTIN(BUILT_IN_CABS,
 289                 "__builtin_cabs",
 290                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 291                 ATTR_CONST_NOTHROW_LIST)
 292 DEF_C99_BUILTIN(BUILT_IN_CABSF,
 293                 "__builtin_cabsf",
 294                 BT_FN_FLOAT_COMPLEX_FLOAT,
 295                 ATTR_CONST_NOTHROW_LIST)
 296 DEF_C99_BUILTIN(BUILT_IN_CABSL,
 297                 "__builtin_cabsl",
 298                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 299                 ATTR_CONST_NOTHROW_LIST)
 300
 301 /* The system prototypes for `bzero', 'bcopy' and `bcmp' functions
 302    have many variations, so don't specify parameters to avoid
 303    conflicts.  The expand_* functions check the argument types anyway.
 304    In addition, these functions have traditionally accepted NULL
 305    pointers when the length parameter is zero, so don't apply
 306    attribute "nonnull".  */
 307 DEF_BUILTIN (BUILT_IN_BZERO,
 308              "__builtin_bzero",
 309              BUILT_IN_NORMAL,
 310              BT_FN_VOID_PTR_SIZE,
 311              BT_FN_VOID_VAR,
 312              true, true, true,
 313              ATTR_NOTHROW_LIST, false)
 314 DEF_BUILTIN (BUILT_IN_BCOPY,
 315              "__builtin_bcopy",
 316              BUILT_IN_NORMAL,
 317              BT_FN_VOID_CONST_PTR_PTR_SIZE,
 318              BT_FN_VOID_VAR,
 319              true, true, true,
 320              ATTR_NOTHROW_LIST, false)
 321 DEF_BUILTIN (BUILT_IN_BCMP,
 322              "__builtin_bcmp",
 323              BUILT_IN_NORMAL,
 324              BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 325              BT_FN_INT_VAR,
 326              true, true, true,
 327              ATTR_PURE_NOTHROW_LIST, false)
 328
 329 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFS,
 330                     "__builtin_ffs",
 331                     BT_FN_INT_INT,
 332                     ATTR_CONST_NOTHROW_LIST)
 333 DEF_GCC_BUILTIN(BUILT_IN_CLZ,
 334                     "__builtin_clz",
 335                     BT_FN_INT_INT,
 336                     ATTR_CONST_NOTHROW_LIST)
 337 DEF_GCC_BUILTIN(BUILT_IN_CTZ,
 338                     "__builtin_ctz",
 339                     BT_FN_INT_INT,
 340                     ATTR_CONST_NOTHROW_LIST)
 341 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNT,
 342                     "__builtin_popcount",
 343                     BT_FN_INT_INT,
 344                     ATTR_CONST_NOTHROW_LIST)
 345 DEF_GCC_BUILTIN(BUILT_IN_PARITY,
 346                     "__builtin_parity",
 347                     BT_FN_INT_INT,
 348                     ATTR_CONST_NOTHROW_LIST)
 349
 350 DEF_GCC_BUILTIN(BUILT_IN_FFSL,
 351                     "__builtin_ffsl",
 352                     BT_FN_INT_LONG,
 353                     ATTR_CONST_NOTHROW_LIST)
 354 DEF_GCC_BUILTIN(BUILT_IN_CLZL,
 355                     "__builtin_clzl",
 356                     BT_FN_INT_LONG,
 357                     ATTR_CONST_NOTHROW_LIST)
 358 DEF_GCC_BUILTIN(BUILT_IN_CTZL,
 359                     "__builtin_ctzl",
 360                     BT_FN_INT_LONG,
 361                     ATTR_CONST_NOTHROW_LIST)
 362 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTL,
 363                     "__builtin_popcountl",
 364                     BT_FN_INT_LONG,
 365                     ATTR_CONST_NOTHROW_LIST)
 366 DEF_GCC_BUILTIN(BUILT_IN_PARITYL,
 367                     "__builtin_parityl",
 368                     BT_FN_INT_LONG,
 369                     ATTR_CONST_NOTHROW_LIST)
 370
 371 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFSLL,
 372                     "__builtin_ffsll",
 373                     BT_FN_INT_LONGLONG,
 374                     ATTR_CONST_NOTHROW_LIST)
 375 DEF_GCC_BUILTIN(BUILT_IN_CLZLL,
 376                     "__builtin_clzll",
 377                     BT_FN_INT_LONGLONG,
 378                     ATTR_CONST_NOTHROW_LIST)
 379 DEF_GCC_BUILTIN(BUILT_IN_CTZLL,
 380                     "__builtin_ctzll",
 381                     BT_FN_INT_LONGLONG,
 382                     ATTR_CONST_NOTHROW_LIST)
 383 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTLL,
 384                     "__builtin_popcountll",
 385                     BT_FN_INT_LONGLONG,
 386                     ATTR_CONST_NOTHROW_LIST)
 387 DEF_GCC_BUILTIN(BUILT_IN_PARITYLL,
 388                     "__builtin_parityll",
 389                     BT_FN_INT_LONGLONG,
 390                     ATTR_CONST_NOTHROW_LIST)
 391
 392 DEF_EXT_LIB_BUILTIN(BUILT_IN_INDEX,
 393                     "__builtin_index",
 394                     BT_FN_STRING_CONST_STRING_INT,
 395                     ATTR_PURE_NOTHROW_NONNULL_1)
 396 DEF_EXT_LIB_BUILTIN(BUILT_IN_RINDEX,
 397                     "__builtin_rindex",
 398                     BT_FN_STRING_CONST_STRING_INT,
 399                     ATTR_PURE_NOTHROW_NONNULL_1)
 400
 401 DEF_LIB_BUILTIN(BUILT_IN_MEMCPY,
 402                 "__builtin_memcpy",
 403                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 404                 ATTR_NOTHROW_NONNULL_1_2)
 405 DEF_LIB_BUILTIN(BUILT_IN_MEMMOVE,
 406                 "__builtin_memmove",
 407                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 408                 ATTR_NOTHROW_NONNULL_1_2)
 409 DEF_LIB_BUILTIN(BUILT_IN_MEMCMP,
 410                 "__builtin_memcmp",
 411                 BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 412                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 413 DEF_LIB_BUILTIN(BUILT_IN_MEMSET,
 414                 "__builtin_memset",
 415                 BT_FN_PTR_PTR_INT_SIZE,
 416                 ATTR_NOTHROW_NONNULL_1)
 417 DEF_EXT_LIB_BUILTIN(BUILT_IN_MEMPCPY,
 418                 "__builtin_mempcpy",
 419                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 420                 ATTR_NOTHROW_NONNULL_1_2)
 421
 422 DEF_LIB_BUILTIN(BUILT_IN_STRCAT,
 423                 "__builtin_strcat",
 424                 BT_FN_STRING_STRING_CONST_STRING,
 425                 ATTR_NOTHROW_NONNULL_1_2)
 426 DEF_LIB_BUILTIN(BUILT_IN_STRNCAT,
 427                 "__builtin_strncat",
 428                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 429                 ATTR_NOTHROW_NONNULL_1_2)
 430 DEF_EXT_LIB_BUILTIN(BUILT_IN_STPCPY,
 431                 "__builtin_stpcpy",
 432                 BT_FN_STRING_STRING_CONST_STRING,
 433                 ATTR_NOTHROW_NONNULL_1_2)
 434 DEF_LIB_BUILTIN(BUILT_IN_STRCPY,
 435                 "__builtin_strcpy",
 436                 BT_FN_STRING_STRING_CONST_STRING,
 437                 ATTR_NOTHROW_NONNULL_1_2)
 438 DEF_LIB_BUILTIN(BUILT_IN_STRNCPY,
 439                 "__builtin_strncpy",
 440                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 441                 ATTR_NOTHROW_NONNULL_1_2)
 442 DEF_LIB_BUILTIN(BUILT_IN_STRCMP,
 443                 "__builtin_strcmp",
 444                 BT_FN_INT_CONST_STRING_CONST_STRING,
 445                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 446 DEF_LIB_BUILTIN(BUILT_IN_STRNCMP,
 447                 "__builtin_strncmp",
 448                 BT_FN_INT_CONST_STRING_CONST_STRING_SIZE,
 449                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 450 DEF_LIB_BUILTIN(BUILT_IN_STRLEN,
 451                 "__builtin_strlen",
 452                 BT_FN_SIZE_CONST_STRING,
 453                 ATTR_PURE_NOTHROW_NONNULL_1)
 454 DEF_LIB_BUILTIN(BUILT_IN_STRSTR,
 455                 "__builtin_strstr",
 456                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 457                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 458 DEF_LIB_BUILTIN(BUILT_IN_STRPBRK,
 459                 "__builtin_strpbrk",
 460                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 461                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 462 DEF_LIB_BUILTIN(BUILT_IN_STRSPN,
 463                 "__builtin_strspn",
 464                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 465                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 466 DEF_LIB_BUILTIN(BUILT_IN_STRCSPN,
 467                 "__builtin_strcspn",
 468                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 469                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 470 DEF_LIB_BUILTIN(BUILT_IN_STRCHR,
 471                 "__builtin_strchr",
 472                 BT_FN_STRING_CONST_STRING_INT,
 473                 ATTR_PURE_NOTHROW_NONNULL_1)
 474 DEF_LIB_BUILTIN(BUILT_IN_STRRCHR,
 475                 "__builtin_strrchr",
 476                 BT_FN_STRING_CONST_STRING_INT,
 477                 ATTR_PURE_NOTHROW_NONNULL_1)
 478
 479 DEF_LIB_BUILTIN(BUILT_IN_SQRT,
 480                 "__builtin_sqrt",
 481                 BT_FN_DOUBLE_DOUBLE,
 482                 flag_errno_math ? ATTR_NOTHROW_LIST
 483                                 : (flag_unsafe_math_optimizations
 484                                    ? ATTR_CONST_NOTHROW_LIST
 485                                    : ATTR_PURE_NOTHROW_LIST))
 486 DEF_LIB_BUILTIN(BUILT_IN_SIN,
 487                 "__builtin_sin",
 488                 BT_FN_DOUBLE_DOUBLE,
 489                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 490                                                : ATTR_PURE_NOTHROW_LIST)
 491 DEF_LIB_BUILTIN(BUILT_IN_COS,
 492                 "__builtin_cos",
 493                 BT_FN_DOUBLE_DOUBLE,
 494                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 495                                                : ATTR_PURE_NOTHROW_LIST)
 496 DEF_LIB_BUILTIN(BUILT_IN_EXP,
 497                 "__builtin_exp",
 498                 BT_FN_DOUBLE_DOUBLE,
 499                 flag_errno_math ? ATTR_NOTHROW_LIST
 500                                 : (flag_unsafe_math_optimizations
 501                                    ? ATTR_CONST_NOTHROW_LIST
 502                                    : ATTR_PURE_NOTHROW_LIST))
 503 DEF_LIB_BUILTIN(BUILT_IN_LOG,
 504                 "__builtin_log",
 505                 BT_FN_DOUBLE_DOUBLE,
 506                 flag_errno_math ? ATTR_NOTHROW_LIST
 507                                 : (flag_unsafe_math_optimizations
 508                                    ? ATTR_CONST_NOTHROW_LIST
 509                                    : ATTR_PURE_NOTHROW_LIST))
 510 DEF_LIB_BUILTIN(BUILT_IN_TAN,
 511                 "__builtin_tan",
 512                 BT_FN_DOUBLE_DOUBLE,
 513                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 514                                                : ATTR_PURE_NOTHROW_LIST)
 515 DEF_LIB_BUILTIN(BUILT_IN_ATAN,
 516                 "__builtin_atan",
 517                 BT_FN_DOUBLE_DOUBLE,
 518                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 519                                                : ATTR_PURE_NOTHROW_LIST)
 520 DEF_LIB_BUILTIN(BUILT_IN_POW,
 521                 "__builtin_pow",
 522                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 523                 flag_errno_math ? ATTR_NOTHROW_LIST
 524                                 : (flag_unsafe_math_optimizations
 525                                    ? ATTR_CONST_NOTHROW_LIST
 526                                    : ATTR_PURE_NOTHROW_LIST))
 527 DEF_LIB_BUILTIN(BUILT_IN_ATAN2,
 528                 "__builtin_atan2",
 529                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 530                 flag_errno_math ? ATTR_NOTHROW_LIST
 531                                 : (flag_unsafe_math_optimizations
 532                                    ? ATTR_CONST_NOTHROW_LIST
 533                                    : ATTR_PURE_NOTHROW_LIST))
 534 DEF_LIB_BUILTIN(BUILT_IN_FMOD,
 535                 "__builtin_fmod",
 536                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 537                 flag_errno_math ? ATTR_NOTHROW_LIST
 538                                 : (flag_unsafe_math_optimizations
 539                                    ? ATTR_CONST_NOTHROW_LIST
 540                                    : ATTR_PURE_NOTHROW_LIST))
 541 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTF,
 542                        "__builtin_sqrtf",
 543                        BT_FN_FLOAT_FLOAT,
 544                        flag_errno_math ? ATTR_NOTHROW_LIST
 545                                        : (flag_unsafe_math_optimizations
 546                                           ? ATTR_CONST_NOTHROW_LIST
 547                                           : ATTR_PURE_NOTHROW_LIST))
 548 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINF,
 549                        "__builtin_sinf",
 550                        BT_FN_FLOAT_FLOAT,
 551                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 552                                                       : ATTR_PURE_NOTHROW_LIST)
 553 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSF,
 554                        "__builtin_cosf",
 555                        BT_FN_FLOAT_FLOAT,
 556                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 557                                                       : ATTR_PURE_NOTHROW_LIST)
 558 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPF,
 559                        "__builtin_expf",
 560                        BT_FN_FLOAT_FLOAT,
 561                        flag_errno_math ? ATTR_NOTHROW_LIST
 562                                        : (flag_unsafe_math_optimizations
 563                                           ? ATTR_CONST_NOTHROW_LIST
 564                                           : ATTR_PURE_NOTHROW_LIST))
 565 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGF,
 566                        "__builtin_logf",
 567                        BT_FN_FLOAT_FLOAT,
 568                        flag_errno_math ? ATTR_NOTHROW_LIST
 569                                        : (flag_unsafe_math_optimizations
 570                                           ? ATTR_CONST_NOTHROW_LIST
 571                                           : ATTR_PURE_NOTHROW_LIST))
 572 DEF_C99_C90RES_BUILTIN(BUILT_IN_TANF,
 573                        "__builtin_tanf",
 574                        BT_FN_FLOAT_FLOAT,
 575                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 576                                                       : ATTR_PURE_NOTHROW_LIST)
 577 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATANF,
 578                        "__builtin_atanf",
 579                        BT_FN_FLOAT_FLOAT,
 580                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 581                                                       : ATTR_PURE_NOTHROW_LIST)
 582 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWF,
 583                        "__builtin_powf",
 584                        BT_FN_FLOAT_FLOAT_FLOAT,
 585                        flag_errno_math ? ATTR_NOTHROW_LIST
 586                                        : (flag_unsafe_math_optimizations
 587                                           ? ATTR_CONST_NOTHROW_LIST
 588                                           : ATTR_PURE_NOTHROW_LIST))
 589 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2F,
 590                        "__builtin_atan2f",
 591                        BT_FN_FLOAT_FLOAT_FLOAT,
 592                        flag_errno_math ? ATTR_NOTHROW_LIST
 593                                        : (flag_unsafe_math_optimizations
 594                                           ? ATTR_CONST_NOTHROW_LIST
 595                                           : ATTR_PURE_NOTHROW_LIST))
 596 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODF,
 597                        "__builtin_fmodf",
 598                        BT_FN_FLOAT_FLOAT_FLOAT,
 599                        flag_errno_math ? ATTR_NOTHROW_LIST
 600                                        : (flag_unsafe_math_optimizations
 601                                           ? ATTR_CONST_NOTHROW_LIST
 602                                           : ATTR_PURE_NOTHROW_LIST))
 603 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTL,
 604                        "__builtin_sqrtl",
 605                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 606                        flag_errno_math ? ATTR_NOTHROW_LIST
 607                                        : (flag_unsafe_math_optimizations
 608                                           ? ATTR_CONST_NOTHROW_LIST
 609                                           : ATTR_PURE_NOTHROW_LIST))
 610 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINL,
 611                        "__builtin_sinl",
 612                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 613                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 614                                                       : ATTR_PURE_NOTHROW_LIST)
 615 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSL,
 616                        "__builtin_cosl",
 617                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 618                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 619                                                       : ATTR_PURE_NOTHROW_LIST)
 620 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPL,
 621                        "__builtin_expl",
 622                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 623                        flag_errno_math ? ATTR_NOTHROW_LIST
 624                                        : (flag_unsafe_math_optimizations
 625                                           ? ATTR_CONST_NOTHROW_LIST
 626                                           : ATTR_PURE_NOTHROW_LIST))
 627 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGL,
 628                        "__builtin_logl",
 629                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 630                        flag_errno_math ? ATTR_NOTHROW_LIST
 631                                        : (flag_unsafe_math_optimizations
 632                                           ? ATTR_CONST_NOTHROW_LIST
 633                                           : ATTR_PURE_NOTHROW_LIST))
 634 DEF_C99_C90RES_BUILTIN(BUILT_IN_TANL,
 635                        "__builtin_tanl",
 636                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 637                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 638                                                       : ATTR_PURE_NOTHROW_LIST)
 639 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATANL,
 640                        "__builtin_atanl",
 641                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 642                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 643                                                       : ATTR_PURE_NOTHROW_LIST)
 644 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWL,
 645                        "__builtin_powl",
 646                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 647                        flag_errno_math ? ATTR_NOTHROW_LIST
 648                                        : (flag_unsafe_math_optimizations
 649                                           ? ATTR_CONST_NOTHROW_LIST
 650                                           : ATTR_PURE_NOTHROW_LIST))
 651 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2L,
 652                        "__builtin_atan2l",
 653                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 654                        flag_errno_math ? ATTR_NOTHROW_LIST
 655                                        : (flag_unsafe_math_optimizations
 656                                           ? ATTR_CONST_NOTHROW_LIST
 657                                           : ATTR_PURE_NOTHROW_LIST))
 658 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODL,
 659                        "__builtin_fmodl",
 660                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 661                        flag_errno_math ? ATTR_NOTHROW_LIST
 662                                        : (flag_unsafe_math_optimizations
 663                                           ? ATTR_CONST_NOTHROW_LIST
 664                                           : ATTR_PURE_NOTHROW_LIST))
 665
 666 DEF_GCC_BUILTIN(BUILT_IN_INF,
 667                 "__builtin_inf",
 668                 BT_FN_DOUBLE,
 669                 ATTR_CONST_NOTHROW_LIST)
 670 DEF_GCC_BUILTIN(BUILT_IN_INFF,
 671                 "__builtin_inff",
 672                 BT_FN_FLOAT,
 673                 ATTR_CONST_NOTHROW_LIST)
 674 DEF_GCC_BUILTIN(BUILT_IN_INFL,
 675                 "__builtin_infl",
 676                 BT_FN_LONG_DOUBLE,
 677                 ATTR_CONST_NOTHROW_LIST)
 678
 679 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VAL,
 680                 "__builtin_huge_val",
 681                 BT_FN_DOUBLE,
 682                 ATTR_CONST_NOTHROW_LIST)
 683 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALF,
 684                 "__builtin_huge_valf",
 685                 BT_FN_FLOAT,
 686                 ATTR_CONST_NOTHROW_LIST)
 687 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALL,
 688                 "__builtin_huge_vall",
 689                 BT_FN_LONG_DOUBLE,
 690                 ATTR_CONST_NOTHROW_LIST)
 691
 692 DEF_LIB_BUILTIN(BUILT_IN_NAN,
 693                 "__builtin_nan",
 694                 BT_FN_DOUBLE_CONST_STRING,
 695                 ATTR_CONST_NOTHROW_NONNULL_1)
 696 DEF_LIB_BUILTIN(BUILT_IN_NANF,
 697                 "__builtin_nanf",
 698                 BT_FN_FLOAT_CONST_STRING,
 699                 ATTR_CONST_NOTHROW_NONNULL_1)
 700 DEF_LIB_BUILTIN(BUILT_IN_NANL,
 701                 "__builtin_nanl",
 702                 BT_FN_LONG_DOUBLE_CONST_STRING,
 703                 ATTR_CONST_NOTHROW_NONNULL_1)
 704
 705 DEF_LIB_BUILTIN(BUILT_IN_NANS,
 706                 "__builtin_nans",
 707                 BT_FN_DOUBLE_CONST_STRING,
 708                 ATTR_CONST_NOTHROW_NONNULL_1)
 709 DEF_LIB_BUILTIN(BUILT_IN_NANSF,
 710                 "__builtin_nansf",
 711                 BT_FN_FLOAT_CONST_STRING,
 712                 ATTR_CONST_NOTHROW_NONNULL_1)
 713 DEF_LIB_BUILTIN(BUILT_IN_NANSL,
 714                 "__builtin_nansl",
 715                 BT_FN_LONG_DOUBLE_CONST_STRING,
 716                 ATTR_CONST_NOTHROW_NONNULL_1)
 717
 718 DEF_GCC_BUILTIN(BUILT_IN_SAVEREGS,
 719                 "__builtin_saveregs",
 720                 BT_FN_PTR_VAR,
 721                 ATTR_NULL)
 722 DEF_GCC_BUILTIN(BUILT_IN_CLASSIFY_TYPE,
 723                 "__builtin_classify_type",
 724                 BT_FN_INT_VAR,
 725                 ATTR_NULL)
 726 DEF_GCC_BUILTIN(BUILT_IN_NEXT_ARG,
 727                 "__builtin_next_arg",
 728                 BT_FN_PTR_VAR,
 729                 ATTR_NULL)
 730 DEF_GCC_BUILTIN(BUILT_IN_ARGS_INFO,
 731                 "__builtin_args_info",
 732                 BT_FN_INT_INT,
 733                 ATTR_NULL)
 734 DEF_GCC_BUILTIN(BUILT_IN_CONSTANT_P,
 735                 "__builtin_constant_p",
 736                 BT_FN_INT_VAR,
 737                 ATTR_CONST_NOTHROW_LIST)
 738 DEF_GCC_BUILTIN(BUILT_IN_FRAME_ADDRESS,
 739                 "__builtin_frame_address",
 740                 BT_FN_PTR_UNSIGNED,
 741                 ATTR_NULL)
 742 DEF_GCC_BUILTIN(BUILT_IN_RETURN_ADDRESS,
 743                 "__builtin_return_address",
 744                 BT_FN_PTR_UNSIGNED,
 745                 ATTR_NULL)
 746 DEF_GCC_BUILTIN(BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
 747                 "__builtin_aggregate_incoming_address",
 748                 BT_FN_PTR_VAR,
 749                 ATTR_NULL)
 750 DEF_GCC_BUILTIN(BUILT_IN_APPLY_ARGS,
 751                 "__builtin_apply_args",
 752                 BT_FN_PTR_VAR,
 753                 ATTR_NULL)
 754 DEF_GCC_BUILTIN(BUILT_IN_APPLY,
 755                 "__builtin_apply",
 756                 BT_FN_PTR_PTR_FN_VOID_VAR_PTR_SIZE,
 757                 ATTR_NULL)
 758 DEF_GCC_BUILTIN(BUILT_IN_RETURN,
 759                 "__builtin_return",
 760                 BT_FN_VOID_PTR,
 761                 ATTR_NORETURN_NOTHROW_LIST)
 762 DEF_GCC_BUILTIN(BUILT_IN_SETJMP,
 763                 "__builtin_setjmp",
 764                 BT_FN_INT_PTR,
 765                 ATTR_NULL)
 766 DEF_GCC_BUILTIN(BUILT_IN_LONGJMP,
 767                 "__builtin_longjmp",
 768                 BT_FN_VOID_PTR_INT,
 769                 ATTR_NORETURN_NOTHROW_LIST)
 770 DEF_GCC_BUILTIN(BUILT_IN_TRAP,
 771                 "__builtin_trap",
 772                 BT_FN_VOID,
 773                 ATTR_NORETURN_NOTHROW_LIST)
 774 DEF_GCC_BUILTIN(BUILT_IN_PREFETCH,
 775                 "__builtin_prefetch",
 776                 BT_FN_VOID_CONST_PTR_VAR,
 777                 ATTR_NULL)
 778
 779 /* stdio.h builtins (without FILE *).  */
 780
 781 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF,
 782                           "__builtin_printf",
 783                           BT_FN_INT_CONST_STRING_VAR,
 784                           ATTR_FORMAT_PRINTF_1_2)
 785 DEF_LIB_BUILTIN(BUILT_IN_PUTCHAR,
 786                 "__builtin_putchar",
 787                 BT_FN_INT_INT,
 788                 ATTR_NOTHROW_LIST)
 789 DEF_LIB_BUILTIN(BUILT_IN_PUTS,
 790                 "__builtin_puts",
 791                 BT_FN_INT_CONST_STRING,
 792                 ATTR_NOTHROW_NONNULL_1)
 793 DEF_C99_BUILTIN(BUILT_IN_SNPRINTF,
 794                 "__builtin_snprintf",
 795                 BT_FN_INT_STRING_SIZE_CONST_STRING_VAR,
 796                 ATTR_FORMAT_PRINTF_3_4)
 797 DEF_LIB_BUILTIN(BUILT_IN_SPRINTF,
 798                 "__builtin_sprintf",
 799                 BT_FN_INT_STRING_CONST_STRING_VAR,
 800                 ATTR_FORMAT_PRINTF_2_3)
 801 DEF_LIB_BUILTIN(BUILT_IN_SCANF,
 802                 "__builtin_scanf",
 803                 BT_FN_INT_CONST_STRING_VAR,
 804                 ATTR_FORMAT_SCANF_1_2)
 805 DEF_LIB_BUILTIN(BUILT_IN_SSCANF,
 806                 "__builtin_sscanf",
 807                 BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
 808                 ATTR_FORMAT_SCANF_2_3)
 809 DEF_LIB_BUILTIN(BUILT_IN_VPRINTF,
 810                 "__builtin_vprintf",
 811                 BT_FN_INT_CONST_STRING_VALIST_ARG,
 812                 ATTR_FORMAT_PRINTF_1_0)
 813 DEF_C99_BUILTIN(BUILT_IN_VSCANF,
 814                 "__builtin_vscanf",
 815                 BT_FN_INT_CONST_STRING_VALIST_ARG,
 816                 ATTR_FORMAT_SCANF_1_0)
 817 DEF_C99_BUILTIN(BUILT_IN_VSSCANF,
 818                 "__builtin_vsscanf",
 819                 BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
 820                 ATTR_FORMAT_SCANF_2_0)
 821 DEF_C99_BUILTIN(BUILT_IN_VSNPRINTF,
 822                 "__builtin_vsnprintf",
 823                 BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
 824                 ATTR_FORMAT_PRINTF_3_0)
 825 DEF_LIB_BUILTIN(BUILT_IN_VSPRINTF,
 826                 "__builtin_vsprintf",
 827                 BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
 828                 ATTR_FORMAT_PRINTF_2_0)
 829
 830
 831 /* stdio.h builtins (with FILE *).  */
 832
 833 /* Declare the __builtin_ style with arguments and the regular style
 834    without them.  We rely on stdio.h to supply the arguments for the
 835    regular style declaration since we had to use void* instead of
 836    FILE* in the __builtin_ prototype supplied here.  */
 837
 838 DEF_FALLBACK_BUILTIN(BUILT_IN_FPUTC,
 839                      "__builtin_fputc",
 840                      BT_FN_INT_INT_PTR,
 841                      ATTR_NOTHROW_NONNULL_2)
 842 DEF_BUILTIN (BUILT_IN_FPUTS,
 843              "__builtin_fputs",
 844              BUILT_IN_NORMAL,
 845              BT_FN_INT_CONST_STRING_PTR,
 846              BT_FN_INT_VAR,
 847              true, true, false, ATTR_NOTHROW_NONNULL_1_2, true)
 848 DEF_FALLBACK_BUILTIN(BUILT_IN_FWRITE,
 849                      "__builtin_fwrite",
 850                      BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR,
 851                       ATTR_NOTHROW_NONNULL_1_4)
 852 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF,
 853                          "__builtin_fprintf",
 854                          BT_FN_INT_PTR_CONST_STRING_VAR,
 855                          ATTR_FORMAT_PRINTF_2_3)
 856
 857 /* stdio unlocked builtins (without FILE *).  */
 858
 859 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
 860                          "__builtin_putchar_unlocked",
 861                          BT_FN_INT_INT, ATTR_NOTHROW_LIST)
 862 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
 863                          "__builtin_puts_unlocked",
 864                          BT_FN_INT_CONST_STRING, ATTR_NOTHROW_NONNULL_1)
 865 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
 866                               "__builtin_printf_unlocked",
 867                               BT_FN_INT_CONST_STRING_VAR,
 868                               ATTR_FORMAT_PRINTF_1_2)
 869
 870 /* stdio unlocked builtins (with FILE *).  */
 871
 872 /* Declare the __builtin_ style with arguments and the regular style
 873    without them.  We rely on stdio.h to supply the arguments for the
 874    regular style declaration since we had to use void* instead of
 875    FILE* in the __builtin_ prototype supplied here.  */
 876
 877 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
 878                          "__builtin_fputc_unlocked",
 879                          BT_FN_INT_INT_PTR, ATTR_NOTHROW_NONNULL_2)
 880 DEF_BUILTIN (BUILT_IN_FPUTS_UNLOCKED,
 881              "__builtin_fputs_unlocked",
 882              BUILT_IN_NORMAL,
 883              BT_FN_INT_CONST_STRING_PTR,
 884              BT_FN_INT_VAR,
 885              true, true, true, ATTR_NOTHROW_NONNULL_1_2, true)
 886 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
 887                          "__builtin_fwrite_unlocked",
 888                          BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR, ATTR_NOTHROW_NONNULL_1_4)
 889 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
 890                               "__builtin_fprintf_unlocked",
 891                               BT_FN_INT_PTR_CONST_STRING_VAR,
 892                               ATTR_FORMAT_PRINTF_2_3)
 893
 894   /* ISO C99 floating point unordered comparisons.  */
 895 DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
 896                 "__builtin_isgreater",
 897                 BT_FN_INT_VAR,
 898                 ATTR_CONST_NOTHROW_LIST)
 899 DEF_GCC_BUILTIN(BUILT_IN_ISGREATEREQUAL,
 900                 "__builtin_isgreaterequal",
 901                 BT_FN_INT_VAR,
 902                 ATTR_CONST_NOTHROW_LIST)
 903 DEF_GCC_BUILTIN(BUILT_IN_ISLESS,
 904                 "__builtin_isless",
 905                 BT_FN_INT_VAR,
 906                 ATTR_CONST_NOTHROW_LIST)
 907 DEF_GCC_BUILTIN(BUILT_IN_ISLESSEQUAL,
 908                 "__builtin_islessequal",
 909                 BT_FN_INT_VAR,
 910                 ATTR_CONST_NOTHROW_LIST)
 911 DEF_GCC_BUILTIN(BUILT_IN_ISLESSGREATER,
 912                 "__builtin_islessgreater",
 913                 BT_FN_INT_VAR,
 914                 ATTR_CONST_NOTHROW_LIST)
 915 DEF_GCC_BUILTIN(BUILT_IN_ISUNORDERED,
 916                 "__builtin_isunordered",
 917                 BT_FN_INT_VAR,
 918                 ATTR_CONST_NOTHROW_LIST)
 919
 920 /* Various hooks for the DWARF 2 __throw routine.  */
 921 DEF_GCC_BUILTIN(BUILT_IN_UNWIND_INIT,
 922                 "__builtin_unwind_init",
 923                 BT_FN_VOID,
 924                 ATTR_NULL)
 925 DEF_GCC_BUILTIN(BUILT_IN_DWARF_CFA,
 926                 "__builtin_dwarf_cfa",
 927                 BT_FN_PTR,
 928                 ATTR_NULL)
 929 DEF_GCC_BUILTIN(BUILT_IN_DWARF_SP_COLUMN,
 930                 "__builtin_dwarf_sp_column",
 931                 BT_FN_UNSIGNED,
 932                 ATTR_NULL)
 933 DEF_GCC_BUILTIN(BUILT_IN_INIT_DWARF_REG_SIZES,
 934                 "__builtin_init_dwarf_reg_size_table",
 935                 BT_FN_VOID_PTR,
 936                 ATTR_NULL)
 937 DEF_GCC_BUILTIN(BUILT_IN_FROB_RETURN_ADDR,
 938                 "__builtin_frob_return_addr",
 939                 BT_FN_PTR_PTR,
 940                 ATTR_NULL)
 941 DEF_GCC_BUILTIN(BUILT_IN_EXTRACT_RETURN_ADDR,
 942                 "__builtin_extract_return_addr",
 943                 BT_FN_PTR_PTR,
 944                 ATTR_NULL)
 945 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN,
 946                 "__builtin_eh_return",
 947                 BT_FN_VOID_PTRMODE_PTR,
 948                 ATTR_NORETURN_NOTHROW_LIST)
 949 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN_DATA_REGNO,
 950                 "__builtin_eh_return_data_regno",
 951                 BT_FN_INT_INT,
 952                 ATTR_NULL)
 953
 954 /* Variable argument list (stdarg.h) support */
 955 DEF_GCC_BUILTIN(BUILT_IN_VA_START,
 956                 "__builtin_va_start",
 957                 BT_FN_VOID_VALIST_REF_VAR,
 958                 ATTR_NULL)
 959 DEF_GCC_BUILTIN(BUILT_IN_STDARG_START,          /* backward compat */
 960                 "__builtin_stdarg_start",
 961                 BT_FN_VOID_VALIST_REF_VAR,
 962                 ATTR_NULL)
 963 DEF_GCC_BUILTIN(BUILT_IN_VA_END,
 964                 "__builtin_va_end",
 965                 BT_FN_VOID_VALIST_REF,
 966                 ATTR_NULL)
 967 DEF_GCC_BUILTIN(BUILT_IN_VA_COPY,
 968                 "__builtin_va_copy",
 969                 BT_FN_VOID_VALIST_REF_VALIST_ARG,
 970                 ATTR_NULL)
 971
 972 DEF_GCC_BUILTIN(BUILT_IN_EXPECT,
 973                 "__builtin_expect",
 974                 BT_FN_LONG_LONG_LONG,
 975                 ATTR_NULL)
 976
 977 /* Declare abort, exit, _exit and _Exit */
 978 DEF_LIB_BUILTIN(BUILT_IN_ABORT,
 979                  "__builtin_abort",
 980                 BT_FN_VOID,
 981                 ATTR_NORETURN_NOTHROW_LIST)
 982 DEF_LIB_BUILTIN(BUILT_IN_EXIT,
 983                 "__builtin_exit",
 984                 BT_FN_VOID_INT,
 985                 ATTR_NORETURN_NOTHROW_LIST)
 986 DEF_EXT_LIB_BUILTIN(BUILT_IN__EXIT,
 987                     "__builtin__exit",
 988                     BT_FN_VOID_INT,
 989                     ATTR_NORETURN_NOTHROW_LIST)
 990 DEF_C99_BUILTIN(BUILT_IN__EXIT2,
 991                 "__builtin__Exit",
 992                 BT_FN_VOID_INT,
 993                 ATTR_NORETURN_NOTHROW_LIST)
 994
 995 /* Declare malloc, calloc and strdup.  */
 996 DEF_LIB_BUILTIN(BUILT_IN_MALLOC,
 997                 "__builtin_malloc",
 998                 BT_FN_PTR_SIZE,
 999                 ATTR_MALLOC_NOTHROW_LIST)
1000
1001 DEF_LIB_BUILTIN(BUILT_IN_CALLOC,
1002                 "__builtin_calloc",
1003                 BT_FN_PTR_SIZE_SIZE,
1004                 ATTR_MALLOC_NOTHROW_LIST)
1005
1006 DEF_EXT_LIB_BUILTIN(BUILT_IN_STRDUP,
1007                     "__builtin_strdup",
1008                     BT_FN_STRING_CONST_STRING,
1009                     ATTR_MALLOC_NOTHROW_NONNULL_1)
1010