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    simplifing floor((double)float) since runtime don't need to implement it.  */
  63
  64 /* A GCC builtin (like __builtin_saveregs) is provided by the
  65    compiler, but does not correspond to a function in the standard
  66    library.  */
  67 #undef DEF_GCC_BUILTIN
  68 #define DEF_GCC_BUILTIN(ENUM, NAME, TYPE, ATTRS)                \
  69   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, BT_LAST,      \
  70                false, false, false, ATTRS, true)
  71
  72
  73 /* A fallback builtin is a builtin (like __builtin_puts) that falls
  74    back to the corresopnding library function if necessary -- but
  75    for which we should not introduce the non-`__builtin' variant of
  76    the name.  */
  77 #undef DEF_FALLBACK_BUILTIN
  78 #define DEF_FALLBACK_BUILTIN(ENUM, NAME, TYPE, ATTRS)   \
  79   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  80                false, true, false, ATTRS, true)
  81
  82 /* Like DEF_FALLBACK_BUILTIN, except that the function is not one that
  83    is specified by ANSI/ISO C.  So, when we're being fully conformant
  84    we ignore the version of these builtins that does not begin with
  85    __builtin.  */
  86 #undef DEF_EXT_FALLBACK_BUILTIN
  87 #define DEF_EXT_FALLBACK_BUILTIN(ENUM, NAME, TYPE)      \
  88   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  89                false, true, true, ATTR_NOTHROW_LIST, true)
  90
  91 /* A library builtin (like __builtin_strchr) is a builtin equivalent
  92    of an ANSI/ISO standard library function.  In addition to the
  93    `__builtin' version, we will create an ordinary version (e.g,
  94    `strchr') as well.  If we cannot compute the answer using the
  95    builtin function, we will fall back to the standard library
  96    version.  */
  97 #undef DEF_LIB_BUILTIN
  98 #define DEF_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
  99   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 100                true, true, false, ATTRS, true)
 101
 102 /* Like DEF_LIB_BUILTIN, except that a call to the builtin should
 103    never fall back to the library version.  */
 104 #undef DEF_LIB_ALWAYS_BUILTIN
 105 #define DEF_LIB_ALWAYS_BUILTIN(ENUM, NAME, TYPE)        \
 106   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 107                true, false, true, ATTR_CONST_NOTHROW_LIST, true)
 108
 109 /* Like DEF_LIB_BUILTIN, except that the function is not one that is
 110    specified by ANSI/ISO C.  So, when we're being fully conformant we
 111    ignore the version of these builtins that does not begin with
 112    __builtin.  */
 113 #undef DEF_EXT_LIB_BUILTIN
 114 #define DEF_EXT_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)    \
 115   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 116                true, true, true, ATTRS, false)
 117
 118 /* Like DEF_LIB_BUILTIN, except that the function is only a part of
 119    the standard in C99 or above.  */
 120 #undef DEF_C99_BUILTIN
 121 #define DEF_C99_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
 122   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 123                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 124
 125 /* Builtin that is specified by C99 and C90 reserve the name for future use.
 126    We can still recognize the builtin in C90 mode but we can't produce it
 127    implicitly.  */
 128 #undef DEF_C99_C90RES_BUILTIN
 129 #define DEF_C99_C90RES_BUILTIN(ENUM, NAME, TYPE, ATTRS) \
 130   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 131                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 132
 133 /* Like DEF_LIB_BUILTIN, except that the function is expanded in the
 134    front-end.  */
 135 #undef DEF_FRONT_END_LIB_BUILTIN
 136 #define DEF_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)      \
 137   DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE,       \
 138                true, true, false, ATTRS, true)
 139
 140 /* Like DEF_FRONT_END_LIB_BUILTIN, except that the function is not one
 141    that is specified by ANSI/ISO C.  So, when we're being fully
 142    conformant we ignore the version of these builtins that does not
 143    begin with __builtin.  */
 144 #undef DEF_EXT_FRONT_END_LIB_BUILTIN
 145 #define DEF_EXT_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)  \
 146   DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE,       \
 147                true, true, true, ATTRS, true)
 148
 149 /* A built-in that is not currently used.  */
 150 #undef DEF_UNUSED_BUILTIN
 151 #define DEF_UNUSED_BUILTIN(X)                                   \
 152   DEF_BUILTIN (X, (const char *) NULL, NOT_BUILT_IN, BT_LAST,   \
 153                BT_LAST, false, false, false, ATTR_NOTHROW_LIST, false)
 154
 155 /* If SMALL_STACK is defined, then `alloca' is only defined in its
 156    `__builtin' form.  */
 157 #if SMALL_STACK
 158 DEF_FALLBACK_BUILTIN(BUILT_IN_ALLOCA,
 159                      "__builtin_alloca",
 160                      BT_FN_PTR_SIZE,
 161                      ATTR_MALLOC_NOTHROW_LIST)
 162 #else
 163 DEF_EXT_LIB_BUILTIN(BUILT_IN_ALLOCA,
 164                     "__builtin_alloca",
 165                     BT_FN_PTR_SIZE,
 166                     ATTR_MALLOC_NOTHROW_LIST)
 167 #endif
 168
 169 DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_ABS,
 170                        "__builtin_abs",
 171                        BT_FN_INT_INT)
 172 DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_LABS,
 173                        "__builtin_labs",
 174                        BT_FN_LONG_LONG)
 175
 176 DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_FABS,
 177                        "__builtin_fabs",
 178                        BT_FN_DOUBLE_DOUBLE)
 179 DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_FABSF,
 180                        "__builtin_fabsf",
 181                        BT_FN_FLOAT_FLOAT)
 182 DEF_LIB_ALWAYS_BUILTIN(BUILT_IN_FABSL,
 183                        "__builtin_fabsl",
 184                        BT_FN_LONG_DOUBLE_LONG_DOUBLE)
 185
 186 DEF_LIB_BUILTIN(BUILT_IN_FLOOR,
 187                 "__builtin_floor",
 188                 BT_FN_DOUBLE_DOUBLE,
 189                 ATTR_CONST_NOTHROW_LIST)
 190 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORF,
 191                        "__builtin_floorf",
 192                        BT_FN_FLOAT_FLOAT,
 193                        ATTR_CONST_NOTHROW_LIST)
 194 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORL,
 195                        "__builtin_floorl",
 196                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 197                        ATTR_CONST_NOTHROW_LIST)
 198
 199 DEF_LIB_BUILTIN(BUILT_IN_CEIL,
 200                 "__builtin_ceil",
 201                 BT_FN_DOUBLE_DOUBLE,
 202                 ATTR_CONST_NOTHROW_LIST)
 203 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILF,
 204                        "__builtin_ceilf",
 205                        BT_FN_FLOAT_FLOAT,
 206                        ATTR_CONST_NOTHROW_LIST)
 207 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILL,
 208                        "__builtin_ceill",
 209                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 210                        ATTR_CONST_NOTHROW_LIST)
 211
 212 DEF_C99_BUILTIN(BUILT_IN_ROUND,
 213                 "__builtin_round",
 214                 BT_FN_DOUBLE_DOUBLE,
 215                 ATTR_CONST_NOTHROW_LIST)
 216 DEF_C99_BUILTIN(BUILT_IN_ROUNDF,
 217                 "__builtin_roundf",
 218                 BT_FN_FLOAT_FLOAT,
 219                 ATTR_CONST_NOTHROW_LIST)
 220 DEF_C99_BUILTIN(BUILT_IN_ROUNDL,
 221                 "__builtin_roundl",
 222                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 223                 ATTR_CONST_NOTHROW_LIST)
 224
 225 DEF_C99_BUILTIN(BUILT_IN_TRUNC,
 226                 "__builtin_trunc",
 227                 BT_FN_DOUBLE_DOUBLE,
 228                 ATTR_CONST_NOTHROW_LIST)
 229 DEF_C99_BUILTIN(BUILT_IN_TRUNCF,
 230                 "__builtin_truncf",
 231                 BT_FN_FLOAT_FLOAT,
 232                 ATTR_CONST_NOTHROW_LIST)
 233 DEF_C99_BUILTIN(BUILT_IN_TRUNCL,
 234                 "__builtin_truncl",
 235                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 236                 ATTR_CONST_NOTHROW_LIST)
 237
 238 DEF_C99_BUILTIN(BUILT_IN_NEARBYINT,
 239                 "__builtin_nearbyint",
 240                 BT_FN_DOUBLE_DOUBLE,
 241                 ATTR_CONST_NOTHROW_LIST)
 242 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTF,
 243                 "__builtin_nearbyintf",
 244                 BT_FN_FLOAT_FLOAT,
 245                 ATTR_CONST_NOTHROW_LIST)
 246 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTL,
 247                 "__builtin_nearbyintl",
 248                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 249                 ATTR_CONST_NOTHROW_LIST)
 250
 251 DEF_C99_BUILTIN(BUILT_IN_LLABS,
 252                 "__builtin_llabs",
 253                 BT_FN_LONGLONG_LONGLONG,
 254                 ATTR_CONST_NOTHROW_LIST)
 255 DEF_C99_BUILTIN(BUILT_IN_IMAXABS,
 256                 "__builtin_imaxabs",
 257                 BT_FN_INTMAX_INTMAX,
 258                 ATTR_CONST_NOTHROW_LIST)
 259 DEF_C99_BUILTIN(BUILT_IN_CONJ,
 260                 "__builtin_conj",
 261                 BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
 262                 ATTR_CONST_NOTHROW_LIST)
 263 DEF_C99_BUILTIN(BUILT_IN_CONJF,
 264                 "__builtin_conjf",
 265                 BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT,
 266                 ATTR_CONST_NOTHROW_LIST)
 267 DEF_C99_BUILTIN(BUILT_IN_CONJL,
 268                 "__builtin_conjl",
 269                 BT_FN_COMPLEX_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 270                 ATTR_CONST_NOTHROW_LIST)
 271 DEF_C99_BUILTIN(BUILT_IN_CREAL,
 272                 "__builtin_creal",
 273                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 274                 ATTR_CONST_NOTHROW_LIST)
 275 DEF_C99_BUILTIN(BUILT_IN_CREALF,
 276                 "__builtin_crealf",
 277                 BT_FN_FLOAT_COMPLEX_FLOAT,
 278                 ATTR_CONST_NOTHROW_LIST)
 279 DEF_C99_BUILTIN(BUILT_IN_CREALL,
 280                 "__builtin_creall",
 281                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 282                 ATTR_CONST_NOTHROW_LIST)
 283 DEF_C99_BUILTIN(BUILT_IN_CIMAG,
 284                 "__builtin_cimag",
 285                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 286                 ATTR_CONST_NOTHROW_LIST)
 287 DEF_C99_BUILTIN(BUILT_IN_CIMAGF,
 288                 "__builtin_cimagf",
 289                 BT_FN_FLOAT_COMPLEX_FLOAT,
 290                 ATTR_CONST_NOTHROW_LIST)
 291 DEF_C99_BUILTIN(BUILT_IN_CIMAGL,
 292                 "__builtin_cimagl",
 293                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 294                 ATTR_CONST_NOTHROW_LIST)
 295
 296 DEF_UNUSED_BUILTIN(BUILT_IN_DIV)
 297 DEF_UNUSED_BUILTIN(BUILT_IN_LDIV)
 298 DEF_UNUSED_BUILTIN(BUILT_IN_FFLOOR)
 299 DEF_UNUSED_BUILTIN(BUILT_IN_FCEIL)
 300 DEF_UNUSED_BUILTIN(BUILT_IN_FMOD)
 301 DEF_UNUSED_BUILTIN(BUILT_IN_FREM)
 302
 303 /* The system prototypes for `bzero' and `bcmp' functions have many
 304    variations, so don't specify parameters to avoid conflicts.  The
 305    expand_* functions check the argument types anyway.  */
 306 DEF_BUILTIN (BUILT_IN_BZERO,
 307              "__builtin_bzero",
 308              BUILT_IN_NORMAL,
 309              BT_FN_VOID_PTR_SIZE,
 310              BT_FN_VOID_VAR,
 311              true, true, true,
 312              ATTR_NOTHROW_LIST, false)
 313 DEF_BUILTIN (BUILT_IN_BCMP,
 314              "__builtin_bcmp",
 315              BUILT_IN_NORMAL,
 316              BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 317              BT_FN_INT_VAR,
 318              true, true, true,
 319              ATTR_PURE_NOTHROW_LIST, false)
 320
 321 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFS,
 322                     "__builtin_ffs",
 323                     BT_FN_INT_INT,
 324                     ATTR_CONST_NOTHROW_LIST)
 325 DEF_GCC_BUILTIN(BUILT_IN_CLZ,
 326                     "__builtin_clz",
 327                     BT_FN_INT_INT,
 328                     ATTR_CONST_NOTHROW_LIST)
 329 DEF_GCC_BUILTIN(BUILT_IN_CTZ,
 330                     "__builtin_ctz",
 331                     BT_FN_INT_INT,
 332                     ATTR_CONST_NOTHROW_LIST)
 333 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNT,
 334                     "__builtin_popcount",
 335                     BT_FN_INT_INT,
 336                     ATTR_CONST_NOTHROW_LIST)
 337 DEF_GCC_BUILTIN(BUILT_IN_PARITY,
 338                     "__builtin_parity",
 339                     BT_FN_INT_INT,
 340                     ATTR_CONST_NOTHROW_LIST)
 341
 342 DEF_GCC_BUILTIN(BUILT_IN_FFSL,
 343                     "__builtin_ffsl",
 344                     BT_FN_INT_LONG,
 345                     ATTR_CONST_NOTHROW_LIST)
 346 DEF_GCC_BUILTIN(BUILT_IN_CLZL,
 347                     "__builtin_clzl",
 348                     BT_FN_INT_LONG,
 349                     ATTR_CONST_NOTHROW_LIST)
 350 DEF_GCC_BUILTIN(BUILT_IN_CTZL,
 351                     "__builtin_ctzl",
 352                     BT_FN_INT_LONG,
 353                     ATTR_CONST_NOTHROW_LIST)
 354 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTL,
 355                     "__builtin_popcountl",
 356                     BT_FN_INT_LONG,
 357                     ATTR_CONST_NOTHROW_LIST)
 358 DEF_GCC_BUILTIN(BUILT_IN_PARITYL,
 359                     "__builtin_parityl",
 360                     BT_FN_INT_LONG,
 361                     ATTR_CONST_NOTHROW_LIST)
 362
 363 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFSLL,
 364                     "__builtin_ffsll",
 365                     BT_FN_INT_LONGLONG,
 366                     ATTR_CONST_NOTHROW_LIST)
 367 DEF_GCC_BUILTIN(BUILT_IN_CLZLL,
 368                     "__builtin_clzll",
 369                     BT_FN_INT_LONGLONG,
 370                     ATTR_CONST_NOTHROW_LIST)
 371 DEF_GCC_BUILTIN(BUILT_IN_CTZLL,
 372                     "__builtin_ctzll",
 373                     BT_FN_INT_LONGLONG,
 374                     ATTR_CONST_NOTHROW_LIST)
 375 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTLL,
 376                     "__builtin_popcountll",
 377                     BT_FN_INT_LONGLONG,
 378                     ATTR_CONST_NOTHROW_LIST)
 379 DEF_GCC_BUILTIN(BUILT_IN_PARITYLL,
 380                     "__builtin_parityll",
 381                     BT_FN_INT_LONGLONG,
 382                     ATTR_CONST_NOTHROW_LIST)
 383
 384 DEF_EXT_LIB_BUILTIN(BUILT_IN_INDEX,
 385                     "__builtin_index",
 386                     BT_FN_STRING_CONST_STRING_INT,
 387                     ATTR_PURE_NOTHROW_LIST)
 388 DEF_EXT_LIB_BUILTIN(BUILT_IN_RINDEX,
 389                     "__builtin_rindex",
 390                     BT_FN_STRING_CONST_STRING_INT,
 391                     ATTR_PURE_NOTHROW_LIST)
 392
 393 DEF_LIB_BUILTIN(BUILT_IN_MEMCPY,
 394                 "__builtin_memcpy",
 395                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 396                 ATTR_NOTHROW_LIST)
 397 DEF_LIB_BUILTIN(BUILT_IN_MEMCMP,
 398                 "__builtin_memcmp",
 399                 BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 400                 ATTR_PURE_NOTHROW_LIST)
 401 DEF_LIB_BUILTIN(BUILT_IN_MEMSET,
 402                 "__builtin_memset",
 403                 BT_FN_PTR_PTR_INT_SIZE,
 404                 ATTR_NOTHROW_LIST)
 405
 406 DEF_LIB_BUILTIN(BUILT_IN_STRCAT,
 407                 "__builtin_strcat",
 408                 BT_FN_STRING_STRING_CONST_STRING,
 409                 ATTR_NOTHROW_LIST)
 410 DEF_LIB_BUILTIN(BUILT_IN_STRNCAT,
 411                 "__builtin_strncat",
 412                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 413                 ATTR_NOTHROW_LIST)
 414 DEF_LIB_BUILTIN(BUILT_IN_STRCPY,
 415                 "__builtin_strcpy",
 416                 BT_FN_STRING_STRING_CONST_STRING,
 417                 ATTR_NOTHROW_LIST)
 418 DEF_LIB_BUILTIN(BUILT_IN_STRNCPY,
 419                 "__builtin_strncpy",
 420                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 421                 ATTR_NOTHROW_LIST)
 422 DEF_LIB_BUILTIN(BUILT_IN_STRCMP,
 423                 "__builtin_strcmp",
 424                 BT_FN_INT_CONST_STRING_CONST_STRING,
 425                 ATTR_PURE_NOTHROW_LIST)
 426 DEF_LIB_BUILTIN(BUILT_IN_STRNCMP,
 427                 "__builtin_strncmp",
 428                 BT_FN_INT_CONST_STRING_CONST_STRING_SIZE,
 429                 ATTR_PURE_NOTHROW_LIST)
 430 DEF_LIB_BUILTIN(BUILT_IN_STRLEN,
 431                 "__builtin_strlen",
 432                 BT_FN_SIZE_CONST_STRING,
 433                 ATTR_PURE_NOTHROW_LIST)
 434 DEF_LIB_BUILTIN(BUILT_IN_STRSTR,
 435                 "__builtin_strstr",
 436                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 437                 ATTR_PURE_NOTHROW_LIST)
 438 DEF_LIB_BUILTIN(BUILT_IN_STRPBRK,
 439                 "__builtin_strpbrk",
 440                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 441                 ATTR_PURE_NOTHROW_LIST)
 442 DEF_LIB_BUILTIN(BUILT_IN_STRSPN,
 443                 "__builtin_strspn",
 444                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 445                 ATTR_PURE_NOTHROW_LIST)
 446 DEF_LIB_BUILTIN(BUILT_IN_STRCSPN,
 447                 "__builtin_strcspn",
 448                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 449                 ATTR_PURE_NOTHROW_LIST)
 450 DEF_LIB_BUILTIN(BUILT_IN_STRCHR,
 451                 "__builtin_strchr",
 452                 BT_FN_STRING_CONST_STRING_INT,
 453                 ATTR_PURE_NOTHROW_LIST)
 454 DEF_LIB_BUILTIN(BUILT_IN_STRRCHR,
 455                 "__builtin_strrchr",
 456                 BT_FN_STRING_CONST_STRING_INT,
 457                 ATTR_PURE_NOTHROW_LIST)
 458
 459 DEF_LIB_BUILTIN(BUILT_IN_SQRT,
 460                 "__builtin_sqrt",
 461                 BT_FN_DOUBLE_DOUBLE,
 462                 flag_errno_math ? ATTR_NOTHROW_LIST
 463                                 : (flag_unsafe_math_optimizations
 464                                    ? ATTR_CONST_NOTHROW_LIST
 465                                    : ATTR_PURE_NOTHROW_LIST))
 466 DEF_LIB_BUILTIN(BUILT_IN_SIN,
 467                 "__builtin_sin",
 468                 BT_FN_DOUBLE_DOUBLE,
 469                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 470                                                : ATTR_PURE_NOTHROW_LIST)
 471 DEF_LIB_BUILTIN(BUILT_IN_COS,
 472                 "__builtin_cos",
 473                 BT_FN_DOUBLE_DOUBLE,
 474                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 475                                                : ATTR_PURE_NOTHROW_LIST)
 476 DEF_LIB_BUILTIN(BUILT_IN_EXP,
 477                 "__builtin_exp",
 478                 BT_FN_DOUBLE_DOUBLE,
 479                 flag_errno_math ? ATTR_NOTHROW_LIST
 480                                 : (flag_unsafe_math_optimizations
 481                                    ? ATTR_CONST_NOTHROW_LIST
 482                                    : ATTR_PURE_NOTHROW_LIST))
 483 DEF_LIB_BUILTIN(BUILT_IN_LOG,
 484                 "__builtin_log",
 485                 BT_FN_DOUBLE_DOUBLE,
 486                 flag_errno_math ? ATTR_NOTHROW_LIST
 487                                 : (flag_unsafe_math_optimizations
 488                                    ? ATTR_CONST_NOTHROW_LIST
 489                                    : ATTR_PURE_NOTHROW_LIST))
 490 DEF_LIB_BUILTIN(BUILT_IN_POW,
 491                 "__builtin_pow",
 492                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 493                 flag_errno_math ? ATTR_NOTHROW_LIST
 494                                 : (flag_unsafe_math_optimizations
 495                                    ? ATTR_CONST_NOTHROW_LIST
 496                                    : ATTR_PURE_NOTHROW_LIST))
 497 DEF_LIB_BUILTIN(BUILT_IN_ATAN2,
 498                 "__builtin_atan2",
 499                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 500                 flag_errno_math ? ATTR_NOTHROW_LIST
 501                                 : (flag_unsafe_math_optimizations
 502                                    ? ATTR_CONST_NOTHROW_LIST
 503                                    : ATTR_PURE_NOTHROW_LIST))
 504 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTF,
 505                        "__builtin_sqrtf",
 506                        BT_FN_FLOAT_FLOAT,
 507                        flag_errno_math ? ATTR_NOTHROW_LIST
 508                                        : (flag_unsafe_math_optimizations
 509                                           ? ATTR_CONST_NOTHROW_LIST
 510                                           : ATTR_PURE_NOTHROW_LIST))
 511 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINF,
 512                        "__builtin_sinf",
 513                        BT_FN_FLOAT_FLOAT,
 514                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 515                                                       : ATTR_PURE_NOTHROW_LIST)
 516 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSF,
 517                        "__builtin_cosf",
 518                        BT_FN_FLOAT_FLOAT,
 519                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 520                                                       : ATTR_PURE_NOTHROW_LIST)
 521 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPF,
 522                        "__builtin_expf",
 523                        BT_FN_FLOAT_FLOAT,
 524                        flag_errno_math ? ATTR_NOTHROW_LIST
 525                                        : (flag_unsafe_math_optimizations
 526                                           ? ATTR_CONST_NOTHROW_LIST
 527                                           : ATTR_PURE_NOTHROW_LIST))
 528 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGF,
 529                        "__builtin_logf",
 530                        BT_FN_FLOAT_FLOAT,
 531                        flag_errno_math ? ATTR_NOTHROW_LIST
 532                                        : (flag_unsafe_math_optimizations
 533                                           ? ATTR_CONST_NOTHROW_LIST
 534                                           : ATTR_PURE_NOTHROW_LIST))
 535 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWF,
 536                        "__builtin_powf",
 537                        BT_FN_FLOAT_FLOAT_FLOAT,
 538                        flag_errno_math ? ATTR_NOTHROW_LIST
 539                                        : (flag_unsafe_math_optimizations
 540                                           ? ATTR_CONST_NOTHROW_LIST
 541                                           : ATTR_PURE_NOTHROW_LIST))
 542 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2F,
 543                        "__builtin_atan2f",
 544                        BT_FN_FLOAT_FLOAT_FLOAT,
 545                        flag_errno_math ? ATTR_NOTHROW_LIST
 546                                        : (flag_unsafe_math_optimizations
 547                                           ? ATTR_CONST_NOTHROW_LIST
 548                                           : ATTR_PURE_NOTHROW_LIST))
 549 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTL,
 550                        "__builtin_sqrtl",
 551                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 552                        flag_errno_math ? ATTR_NOTHROW_LIST
 553                                        : (flag_unsafe_math_optimizations
 554                                           ? ATTR_CONST_NOTHROW_LIST
 555                                           : ATTR_PURE_NOTHROW_LIST))
 556 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINL,
 557                        "__builtin_sinl",
 558                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 559                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 560                                                       : ATTR_PURE_NOTHROW_LIST)
 561 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSL,
 562                        "__builtin_cosl",
 563                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 564                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 565                                                       : ATTR_PURE_NOTHROW_LIST)
 566 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPL,
 567                        "__builtin_expl",
 568                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 569                        flag_errno_math ? ATTR_NOTHROW_LIST
 570                                        : (flag_unsafe_math_optimizations
 571                                           ? ATTR_CONST_NOTHROW_LIST
 572                                           : ATTR_PURE_NOTHROW_LIST))
 573 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGL,
 574                        "__builtin_logl",
 575                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 576                        flag_errno_math ? ATTR_NOTHROW_LIST
 577                                        : (flag_unsafe_math_optimizations
 578                                           ? ATTR_CONST_NOTHROW_LIST
 579                                           : ATTR_PURE_NOTHROW_LIST))
 580 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWL,
 581                        "__builtin_powl",
 582                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 583                        flag_errno_math ? ATTR_NOTHROW_LIST
 584                                        : (flag_unsafe_math_optimizations
 585                                           ? ATTR_CONST_NOTHROW_LIST
 586                                           : ATTR_PURE_NOTHROW_LIST))
 587 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2L,
 588                        "__builtin_atan2l",
 589                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 590                        flag_errno_math ? ATTR_NOTHROW_LIST
 591                                        : (flag_unsafe_math_optimizations
 592                                           ? ATTR_CONST_NOTHROW_LIST
 593                                           : ATTR_PURE_NOTHROW_LIST))
 594
 595 DEF_GCC_BUILTIN(BUILT_IN_INF,
 596                 "__builtin_inf",
 597                 BT_FN_DOUBLE,
 598                 ATTR_CONST_NOTHROW_LIST)
 599 DEF_GCC_BUILTIN(BUILT_IN_INFF,
 600                 "__builtin_inff",
 601                 BT_FN_FLOAT,
 602                 ATTR_CONST_NOTHROW_LIST)
 603 DEF_GCC_BUILTIN(BUILT_IN_INFL,
 604                 "__builtin_infl",
 605                 BT_FN_LONG_DOUBLE,
 606                 ATTR_CONST_NOTHROW_LIST)
 607
 608 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VAL,
 609                 "__builtin_huge_val",
 610                 BT_FN_DOUBLE,
 611                 ATTR_CONST_NOTHROW_LIST)
 612 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALF,
 613                 "__builtin_huge_valf",
 614                 BT_FN_FLOAT,
 615                 ATTR_CONST_NOTHROW_LIST)
 616 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALL,
 617                 "__builtin_huge_vall",
 618                 BT_FN_LONG_DOUBLE,
 619                 ATTR_CONST_NOTHROW_LIST)
 620
 621 DEF_LIB_BUILTIN(BUILT_IN_NAN,
 622                 "__builtin_nan",
 623                 BT_FN_DOUBLE_CONST_STRING,
 624                 ATTR_CONST_NOTHROW_LIST)
 625 DEF_LIB_BUILTIN(BUILT_IN_NANF,
 626                 "__builtin_nanf",
 627                 BT_FN_FLOAT_CONST_STRING,
 628                 ATTR_CONST_NOTHROW_LIST)
 629 DEF_LIB_BUILTIN(BUILT_IN_NANL,
 630                 "__builtin_nanl",
 631                 BT_FN_LONG_DOUBLE_CONST_STRING,
 632                 ATTR_CONST_NOTHROW_LIST)
 633
 634 DEF_LIB_BUILTIN(BUILT_IN_NANS,
 635                 "__builtin_nans",
 636                 BT_FN_DOUBLE_CONST_STRING,
 637                 ATTR_CONST_NOTHROW_LIST)
 638 DEF_LIB_BUILTIN(BUILT_IN_NANSF,
 639                 "__builtin_nansf",
 640                 BT_FN_FLOAT_CONST_STRING,
 641                 ATTR_CONST_NOTHROW_LIST)
 642 DEF_LIB_BUILTIN(BUILT_IN_NANSL,
 643                 "__builtin_nansl",
 644                 BT_FN_LONG_DOUBLE_CONST_STRING,
 645                 ATTR_CONST_NOTHROW_LIST)
 646
 647 DEF_GCC_BUILTIN(BUILT_IN_SAVEREGS,
 648                 "__builtin_saveregs",
 649                 BT_FN_PTR_VAR,
 650                 ATTR_NULL)
 651 DEF_GCC_BUILTIN(BUILT_IN_CLASSIFY_TYPE,
 652                 "__builtin_classify_type",
 653                 BT_FN_INT_VAR,
 654                 ATTR_NULL)
 655 DEF_GCC_BUILTIN(BUILT_IN_NEXT_ARG,
 656                 "__builtin_next_arg",
 657                 BT_FN_PTR_VAR,
 658                 ATTR_NULL)
 659 DEF_GCC_BUILTIN(BUILT_IN_ARGS_INFO,
 660                 "__builtin_args_info",
 661                 BT_FN_INT_INT,
 662                 ATTR_NULL)
 663 DEF_GCC_BUILTIN(BUILT_IN_CONSTANT_P,
 664                 "__builtin_constant_p",
 665                 BT_FN_INT_VAR,
 666                 ATTR_NULL)
 667 DEF_GCC_BUILTIN(BUILT_IN_FRAME_ADDRESS,
 668                 "__builtin_frame_address",
 669                 BT_FN_PTR_UNSIGNED,
 670                 ATTR_NULL)
 671 DEF_GCC_BUILTIN(BUILT_IN_RETURN_ADDRESS,
 672                 "__builtin_return_address",
 673                 BT_FN_PTR_UNSIGNED,
 674                 ATTR_NULL)
 675 DEF_GCC_BUILTIN(BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
 676                 "__builtin_aggregate_incoming_address",
 677                 BT_FN_PTR_VAR,
 678                 ATTR_NULL)
 679 DEF_GCC_BUILTIN(BUILT_IN_APPLY_ARGS,
 680                 "__builtin_apply_args",
 681                 BT_FN_PTR_VAR,
 682                 ATTR_NULL)
 683 DEF_GCC_BUILTIN(BUILT_IN_APPLY,
 684                 "__builtin_apply",
 685                 BT_FN_PTR_PTR_FN_VOID_VAR_PTR_SIZE,
 686                 ATTR_NULL)
 687 DEF_GCC_BUILTIN(BUILT_IN_RETURN,
 688                 "__builtin_return",
 689                 BT_FN_VOID_PTR,
 690                 ATTR_NORETURN_NOTHROW_LIST)
 691 DEF_GCC_BUILTIN(BUILT_IN_SETJMP,
 692                 "__builtin_setjmp",
 693                 BT_FN_INT_PTR,
 694                 ATTR_NULL)
 695 DEF_GCC_BUILTIN(BUILT_IN_LONGJMP,
 696                 "__builtin_longjmp",
 697                 BT_FN_VOID_PTR_INT,
 698                 ATTR_NORETURN_NOTHROW_LIST)
 699 DEF_GCC_BUILTIN(BUILT_IN_TRAP,
 700                 "__builtin_trap",
 701                 BT_FN_VOID,
 702                 ATTR_NORETURN_NOTHROW_LIST)
 703 DEF_GCC_BUILTIN(BUILT_IN_PREFETCH,
 704                 "__builtin_prefetch",
 705                 BT_FN_VOID_CONST_PTR_VAR,
 706                 ATTR_NULL)
 707
 708 /* Stdio builtins.  */
 709 DEF_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR,
 710                     "__builtin_putchar",
 711                      BT_FN_INT_INT,
 712                      ATTR_NOTHROW_LIST)
 713 DEF_FALLBACK_BUILTIN(BUILT_IN_PUTS,
 714                      "__builtin_puts",
 715                      BT_FN_INT_CONST_STRING,
 716                      ATTR_NOTHROW_LIST)
 717 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF,
 718                           "__builtin_printf",
 719                           BT_FN_INT_CONST_STRING_VAR,
 720                           ATTR_FORMAT_PRINTF_1_2)
 721 DEF_FALLBACK_BUILTIN(BUILT_IN_FPUTC,
 722                      "__builtin_fputc",
 723                      BT_FN_INT_INT_PTR,
 724                      ATTR_NOTHROW_LIST)
 725 /* Declare the __builtin_ style with arguments and the regular style
 726    without them.  We rely on stdio.h to supply the arguments for the
 727    regular style declaration since we had to use void* instead of
 728    FILE* in the __builtin_ prototype supplied here.  */
 729 DEF_BUILTIN (BUILT_IN_FPUTS,
 730              "__builtin_fputs",
 731              BUILT_IN_NORMAL,
 732              BT_FN_INT_CONST_STRING_PTR,
 733              BT_FN_INT_VAR,
 734              true, true, false, ATTR_NOTHROW_LIST, true)
 735 DEF_FALLBACK_BUILTIN(BUILT_IN_FWRITE,
 736                      "__builtin_fwrite",
 737                      BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR,
 738                       ATTR_NOTHROW_LIST)
 739 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF,
 740                          "__builtin_fprintf",
 741                          BT_FN_INT_PTR_CONST_STRING_VAR,
 742                          ATTR_FORMAT_PRINTF_2_3)
 743
 744 /* Stdio unlocked builtins.  */
 745
 746 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
 747                          "__builtin_putchar_unlocked",
 748                          BT_FN_INT_INT)
 749 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
 750                          "__builtin_puts_unlocked",
 751                          BT_FN_INT_CONST_STRING)
 752 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
 753                               "__builtin_printf_unlocked",
 754                               BT_FN_INT_CONST_STRING_VAR,
 755                               ATTR_FORMAT_PRINTF_1_2)
 756 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
 757                          "__builtin_fputc_unlocked",
 758                          BT_FN_INT_INT_PTR)
 759 /* Declare the __builtin_ style with arguments and the regular style
 760    without them.  We rely on stdio.h to supply the arguments for the
 761    regular style declaration since we had to use void* instead of
 762    FILE* in the __builtin_ prototype supplied here.  */
 763 DEF_BUILTIN (BUILT_IN_FPUTS_UNLOCKED,
 764              "__builtin_fputs_unlocked",
 765              BUILT_IN_NORMAL,
 766              BT_FN_INT_CONST_STRING_PTR,
 767              BT_FN_INT_VAR,
 768              true, true, true, ATTR_NOTHROW_LIST, true)
 769 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
 770                          "__builtin_fwrite_unlocked",
 771                          BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR)
 772 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
 773                               "__builtin_fprintf_unlocked",
 774                               BT_FN_INT_PTR_CONST_STRING_VAR,
 775                               ATTR_FORMAT_PRINTF_2_3)
 776
 777   /* ISO C99 floating point unordered comparisons.  */
 778 DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
 779                 "__builtin_isgreater",
 780                 BT_FN_INT_VAR,
 781                 ATTR_CONST_NOTHROW_LIST)
 782 DEF_GCC_BUILTIN(BUILT_IN_ISGREATEREQUAL,
 783                 "__builtin_isgreaterequal",
 784                 BT_FN_INT_VAR,
 785                 ATTR_CONST_NOTHROW_LIST)
 786 DEF_GCC_BUILTIN(BUILT_IN_ISLESS,
 787                 "__builtin_isless",
 788                 BT_FN_INT_VAR,
 789                 ATTR_CONST_NOTHROW_LIST)
 790 DEF_GCC_BUILTIN(BUILT_IN_ISLESSEQUAL,
 791                 "__builtin_islessequal",
 792                 BT_FN_INT_VAR,
 793                 ATTR_CONST_NOTHROW_LIST)
 794 DEF_GCC_BUILTIN(BUILT_IN_ISLESSGREATER,
 795                 "__builtin_islessgreater",
 796                 BT_FN_INT_VAR,
 797                 ATTR_CONST_NOTHROW_LIST)
 798 DEF_GCC_BUILTIN(BUILT_IN_ISUNORDERED,
 799                 "__builtin_isunordered",
 800                 BT_FN_INT_VAR,
 801                 ATTR_CONST_NOTHROW_LIST)
 802
 803 /* Various hooks for the DWARF 2 __throw routine.  */
 804 DEF_GCC_BUILTIN(BUILT_IN_UNWIND_INIT,
 805                 "__builtin_unwind_init",
 806                 BT_FN_VOID,
 807                 ATTR_NULL)
 808 DEF_GCC_BUILTIN(BUILT_IN_DWARF_CFA,
 809                 "__builtin_dwarf_cfa",
 810                 BT_FN_PTR,
 811                 ATTR_NULL)
 812 DEF_GCC_BUILTIN(BUILT_IN_DWARF_FP_REGNUM,
 813                 "__builtin_dwarf_fp_regnum",
 814                 BT_FN_UNSIGNED,
 815                 ATTR_NULL)
 816 DEF_GCC_BUILTIN(BUILT_IN_INIT_DWARF_REG_SIZES,
 817                 "__builtin_init_dwarf_reg_size_table",
 818                 BT_FN_VOID_PTR,
 819                 ATTR_NULL)
 820 DEF_GCC_BUILTIN(BUILT_IN_FROB_RETURN_ADDR,
 821                 "__builtin_frob_return_addr",
 822                 BT_FN_PTR_PTR,
 823                 ATTR_NULL)
 824 DEF_GCC_BUILTIN(BUILT_IN_EXTRACT_RETURN_ADDR,
 825                 "__builtin_extract_return_addr",
 826                 BT_FN_PTR_PTR,
 827                 ATTR_NULL)
 828 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN,
 829                 "__builtin_eh_return",
 830                 BT_FN_VOID_PTRMODE_PTR,
 831                 ATTR_NORETURN_NOTHROW_LIST)
 832 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN_DATA_REGNO,
 833                 "__builtin_eh_return_data_regno",
 834                 BT_FN_INT_INT,
 835                 ATTR_NULL)
 836
 837 /* Variable argument list (stdarg.h) support */
 838 DEF_GCC_BUILTIN(BUILT_IN_VA_START,
 839                 "__builtin_va_start",
 840                 BT_FN_VOID_VALIST_REF_VAR,
 841                 ATTR_NULL)
 842 DEF_GCC_BUILTIN(BUILT_IN_STDARG_START,          /* backward compat */
 843                 "__builtin_stdarg_start",
 844                 BT_FN_VOID_VALIST_REF_VAR,
 845                 ATTR_NULL)
 846 DEF_GCC_BUILTIN(BUILT_IN_VA_END,
 847                 "__builtin_va_end",
 848                 BT_FN_VOID_VALIST_REF,
 849                 ATTR_NULL)
 850 DEF_GCC_BUILTIN(BUILT_IN_VA_COPY,
 851                 "__builtin_va_copy",
 852                 BT_FN_VOID_VALIST_REF_VALIST_ARG,
 853                 ATTR_NULL)
 854
 855 DEF_GCC_BUILTIN(BUILT_IN_EXPECT,
 856                 "__builtin_expect",
 857                 BT_FN_LONG_LONG_LONG,
 858                 ATTR_NULL)
 859
 860 /* C++ extensions */
 861 DEF_UNUSED_BUILTIN(BUILT_IN_NEW)
 862 DEF_UNUSED_BUILTIN(BUILT_IN_VEC_NEW)
 863 DEF_UNUSED_BUILTIN(BUILT_IN_DELETE)
 864 DEF_UNUSED_BUILTIN(BUILT_IN_VEC_DELETE)
 865
 866 /* Declare abort, exit, _exit and _Exit */
 867 DEF_BUILTIN (BUILT_IN_ABORT,
 868              "__builtin_abort",
 869              NOT_BUILT_IN,
 870              BT_FN_VOID,
 871              BT_FN_VOID,
 872              1, 0, 0,
 873              ATTR_NORETURN_NOTHROW_LIST, true)
 874
 875 DEF_BUILTIN (BUILT_IN_EXIT,
 876              "__builtin_exit",
 877              NOT_BUILT_IN,
 878              BT_FN_VOID_INT,
 879              BT_FN_VOID_INT,
 880              1, 0, 0,
 881              ATTR_NORETURN_NOTHROW_LIST, true)
 882
 883 DEF_BUILTIN (BUILT_IN__EXIT,
 884              "__builtin__exit",
 885              NOT_BUILT_IN,
 886              BT_FN_VOID_INT,
 887              BT_FN_VOID_INT,
 888              1, 0, 1,
 889              ATTR_NORETURN_NOTHROW_LIST, false)
 890
 891 DEF_BUILTIN (BUILT_IN__EXIT2,
 892              "__builtin__Exit",
 893              NOT_BUILT_IN,
 894              BT_FN_VOID_INT,
 895              BT_FN_VOID_INT,
 896              1, 0, !flag_isoc99,
 897              ATTR_NORETURN_NOTHROW_LIST, false)
 898