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)      \
  89   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  90                false, true, true, ATTR_NOTHROW_LIST, 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
 289 /* The system prototypes for `bzero', 'bcopy' and `bcmp' functions
 290    have many variations, so don't specify parameters to avoid conflicts.
 291    The expand_* functions check the argument types anyway.  */
 292 DEF_BUILTIN (BUILT_IN_BZERO,
 293              "__builtin_bzero",
 294              BUILT_IN_NORMAL,
 295              BT_FN_VOID_PTR_SIZE,
 296              BT_FN_VOID_VAR,
 297              true, true, true,
 298              ATTR_NOTHROW_LIST, false)
 299 DEF_BUILTIN (BUILT_IN_BCOPY,
 300              "__builtin_bcopy",
 301              BUILT_IN_NORMAL,
 302              BT_FN_VOID_CONST_PTR_PTR_SIZE,
 303              BT_FN_VOID_VAR,
 304              true, true, true,
 305              ATTR_NOTHROW_LIST, false)
 306 DEF_BUILTIN (BUILT_IN_BCMP,
 307              "__builtin_bcmp",
 308              BUILT_IN_NORMAL,
 309              BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 310              BT_FN_INT_VAR,
 311              true, true, true,
 312              ATTR_PURE_NOTHROW_LIST, false)
 313
 314 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFS,
 315                     "__builtin_ffs",
 316                     BT_FN_INT_INT,
 317                     ATTR_CONST_NOTHROW_LIST)
 318 DEF_GCC_BUILTIN(BUILT_IN_CLZ,
 319                     "__builtin_clz",
 320                     BT_FN_INT_INT,
 321                     ATTR_CONST_NOTHROW_LIST)
 322 DEF_GCC_BUILTIN(BUILT_IN_CTZ,
 323                     "__builtin_ctz",
 324                     BT_FN_INT_INT,
 325                     ATTR_CONST_NOTHROW_LIST)
 326 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNT,
 327                     "__builtin_popcount",
 328                     BT_FN_INT_INT,
 329                     ATTR_CONST_NOTHROW_LIST)
 330 DEF_GCC_BUILTIN(BUILT_IN_PARITY,
 331                     "__builtin_parity",
 332                     BT_FN_INT_INT,
 333                     ATTR_CONST_NOTHROW_LIST)
 334
 335 DEF_GCC_BUILTIN(BUILT_IN_FFSL,
 336                     "__builtin_ffsl",
 337                     BT_FN_INT_LONG,
 338                     ATTR_CONST_NOTHROW_LIST)
 339 DEF_GCC_BUILTIN(BUILT_IN_CLZL,
 340                     "__builtin_clzl",
 341                     BT_FN_INT_LONG,
 342                     ATTR_CONST_NOTHROW_LIST)
 343 DEF_GCC_BUILTIN(BUILT_IN_CTZL,
 344                     "__builtin_ctzl",
 345                     BT_FN_INT_LONG,
 346                     ATTR_CONST_NOTHROW_LIST)
 347 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTL,
 348                     "__builtin_popcountl",
 349                     BT_FN_INT_LONG,
 350                     ATTR_CONST_NOTHROW_LIST)
 351 DEF_GCC_BUILTIN(BUILT_IN_PARITYL,
 352                     "__builtin_parityl",
 353                     BT_FN_INT_LONG,
 354                     ATTR_CONST_NOTHROW_LIST)
 355
 356 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFSLL,
 357                     "__builtin_ffsll",
 358                     BT_FN_INT_LONGLONG,
 359                     ATTR_CONST_NOTHROW_LIST)
 360 DEF_GCC_BUILTIN(BUILT_IN_CLZLL,
 361                     "__builtin_clzll",
 362                     BT_FN_INT_LONGLONG,
 363                     ATTR_CONST_NOTHROW_LIST)
 364 DEF_GCC_BUILTIN(BUILT_IN_CTZLL,
 365                     "__builtin_ctzll",
 366                     BT_FN_INT_LONGLONG,
 367                     ATTR_CONST_NOTHROW_LIST)
 368 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTLL,
 369                     "__builtin_popcountll",
 370                     BT_FN_INT_LONGLONG,
 371                     ATTR_CONST_NOTHROW_LIST)
 372 DEF_GCC_BUILTIN(BUILT_IN_PARITYLL,
 373                     "__builtin_parityll",
 374                     BT_FN_INT_LONGLONG,
 375                     ATTR_CONST_NOTHROW_LIST)
 376
 377 DEF_EXT_LIB_BUILTIN(BUILT_IN_INDEX,
 378                     "__builtin_index",
 379                     BT_FN_STRING_CONST_STRING_INT,
 380                     ATTR_PURE_NOTHROW_LIST)
 381 DEF_EXT_LIB_BUILTIN(BUILT_IN_RINDEX,
 382                     "__builtin_rindex",
 383                     BT_FN_STRING_CONST_STRING_INT,
 384                     ATTR_PURE_NOTHROW_LIST)
 385
 386 DEF_LIB_BUILTIN(BUILT_IN_MEMCPY,
 387                 "__builtin_memcpy",
 388                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 389                 ATTR_NOTHROW_LIST)
 390 DEF_LIB_BUILTIN(BUILT_IN_MEMMOVE,
 391                 "__builtin_memmove",
 392                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 393                 ATTR_NOTHROW_LIST)
 394 DEF_LIB_BUILTIN(BUILT_IN_MEMCMP,
 395                 "__builtin_memcmp",
 396                 BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 397                 ATTR_PURE_NOTHROW_LIST)
 398 DEF_LIB_BUILTIN(BUILT_IN_MEMSET,
 399                 "__builtin_memset",
 400                 BT_FN_PTR_PTR_INT_SIZE,
 401                 ATTR_NOTHROW_LIST)
 402 DEF_EXT_LIB_BUILTIN(BUILT_IN_MEMPCPY,
 403                 "__builtin_mempcpy",
 404                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 405                 ATTR_NOTHROW_LIST)
 406
 407 DEF_LIB_BUILTIN(BUILT_IN_STRCAT,
 408                 "__builtin_strcat",
 409                 BT_FN_STRING_STRING_CONST_STRING,
 410                 ATTR_NOTHROW_LIST)
 411 DEF_LIB_BUILTIN(BUILT_IN_STRNCAT,
 412                 "__builtin_strncat",
 413                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 414                 ATTR_NOTHROW_LIST)
 415 DEF_EXT_LIB_BUILTIN(BUILT_IN_STPCPY,
 416                 "__builtin_stpcpy",
 417                 BT_FN_STRING_STRING_CONST_STRING,
 418                 ATTR_NOTHROW_LIST)
 419 DEF_LIB_BUILTIN(BUILT_IN_STRCPY,
 420                 "__builtin_strcpy",
 421                 BT_FN_STRING_STRING_CONST_STRING,
 422                 ATTR_NOTHROW_LIST)
 423 DEF_LIB_BUILTIN(BUILT_IN_STRNCPY,
 424                 "__builtin_strncpy",
 425                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 426                 ATTR_NOTHROW_LIST)
 427 DEF_LIB_BUILTIN(BUILT_IN_STRCMP,
 428                 "__builtin_strcmp",
 429                 BT_FN_INT_CONST_STRING_CONST_STRING,
 430                 ATTR_PURE_NOTHROW_LIST)
 431 DEF_LIB_BUILTIN(BUILT_IN_STRNCMP,
 432                 "__builtin_strncmp",
 433                 BT_FN_INT_CONST_STRING_CONST_STRING_SIZE,
 434                 ATTR_PURE_NOTHROW_LIST)
 435 DEF_LIB_BUILTIN(BUILT_IN_STRLEN,
 436                 "__builtin_strlen",
 437                 BT_FN_SIZE_CONST_STRING,
 438                 ATTR_PURE_NOTHROW_LIST)
 439 DEF_LIB_BUILTIN(BUILT_IN_STRSTR,
 440                 "__builtin_strstr",
 441                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 442                 ATTR_PURE_NOTHROW_LIST)
 443 DEF_LIB_BUILTIN(BUILT_IN_STRPBRK,
 444                 "__builtin_strpbrk",
 445                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 446                 ATTR_PURE_NOTHROW_LIST)
 447 DEF_LIB_BUILTIN(BUILT_IN_STRSPN,
 448                 "__builtin_strspn",
 449                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 450                 ATTR_PURE_NOTHROW_LIST)
 451 DEF_LIB_BUILTIN(BUILT_IN_STRCSPN,
 452                 "__builtin_strcspn",
 453                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 454                 ATTR_PURE_NOTHROW_LIST)
 455 DEF_LIB_BUILTIN(BUILT_IN_STRCHR,
 456                 "__builtin_strchr",
 457                 BT_FN_STRING_CONST_STRING_INT,
 458                 ATTR_PURE_NOTHROW_LIST)
 459 DEF_LIB_BUILTIN(BUILT_IN_STRRCHR,
 460                 "__builtin_strrchr",
 461                 BT_FN_STRING_CONST_STRING_INT,
 462                 ATTR_PURE_NOTHROW_LIST)
 463
 464 DEF_LIB_BUILTIN(BUILT_IN_SQRT,
 465                 "__builtin_sqrt",
 466                 BT_FN_DOUBLE_DOUBLE,
 467                 flag_errno_math ? ATTR_NOTHROW_LIST
 468                                 : (flag_unsafe_math_optimizations
 469                                    ? ATTR_CONST_NOTHROW_LIST
 470                                    : ATTR_PURE_NOTHROW_LIST))
 471 DEF_LIB_BUILTIN(BUILT_IN_SIN,
 472                 "__builtin_sin",
 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_COS,
 477                 "__builtin_cos",
 478                 BT_FN_DOUBLE_DOUBLE,
 479                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 480                                                : ATTR_PURE_NOTHROW_LIST)
 481 DEF_LIB_BUILTIN(BUILT_IN_EXP,
 482                 "__builtin_exp",
 483                 BT_FN_DOUBLE_DOUBLE,
 484                 flag_errno_math ? ATTR_NOTHROW_LIST
 485                                 : (flag_unsafe_math_optimizations
 486                                    ? ATTR_CONST_NOTHROW_LIST
 487                                    : ATTR_PURE_NOTHROW_LIST))
 488 DEF_LIB_BUILTIN(BUILT_IN_LOG,
 489                 "__builtin_log",
 490                 BT_FN_DOUBLE_DOUBLE,
 491                 flag_errno_math ? ATTR_NOTHROW_LIST
 492                                 : (flag_unsafe_math_optimizations
 493                                    ? ATTR_CONST_NOTHROW_LIST
 494                                    : ATTR_PURE_NOTHROW_LIST))
 495 DEF_LIB_BUILTIN(BUILT_IN_POW,
 496                 "__builtin_pow",
 497                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 498                 flag_errno_math ? ATTR_NOTHROW_LIST
 499                                 : (flag_unsafe_math_optimizations
 500                                    ? ATTR_CONST_NOTHROW_LIST
 501                                    : ATTR_PURE_NOTHROW_LIST))
 502 DEF_LIB_BUILTIN(BUILT_IN_ATAN2,
 503                 "__builtin_atan2",
 504                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 505                 flag_errno_math ? ATTR_NOTHROW_LIST
 506                                 : (flag_unsafe_math_optimizations
 507                                    ? ATTR_CONST_NOTHROW_LIST
 508                                    : ATTR_PURE_NOTHROW_LIST))
 509 DEF_LIB_BUILTIN(BUILT_IN_FMOD,
 510                 "__builtin_fmod",
 511                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 512                 flag_errno_math ? ATTR_NOTHROW_LIST
 513                                 : (flag_unsafe_math_optimizations
 514                                    ? ATTR_CONST_NOTHROW_LIST
 515                                    : ATTR_PURE_NOTHROW_LIST))
 516 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTF,
 517                        "__builtin_sqrtf",
 518                        BT_FN_FLOAT_FLOAT,
 519                        flag_errno_math ? ATTR_NOTHROW_LIST
 520                                        : (flag_unsafe_math_optimizations
 521                                           ? ATTR_CONST_NOTHROW_LIST
 522                                           : ATTR_PURE_NOTHROW_LIST))
 523 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINF,
 524                        "__builtin_sinf",
 525                        BT_FN_FLOAT_FLOAT,
 526                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 527                                                       : ATTR_PURE_NOTHROW_LIST)
 528 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSF,
 529                        "__builtin_cosf",
 530                        BT_FN_FLOAT_FLOAT,
 531                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 532                                                       : ATTR_PURE_NOTHROW_LIST)
 533 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPF,
 534                        "__builtin_expf",
 535                        BT_FN_FLOAT_FLOAT,
 536                        flag_errno_math ? ATTR_NOTHROW_LIST
 537                                        : (flag_unsafe_math_optimizations
 538                                           ? ATTR_CONST_NOTHROW_LIST
 539                                           : ATTR_PURE_NOTHROW_LIST))
 540 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGF,
 541                        "__builtin_logf",
 542                        BT_FN_FLOAT_FLOAT,
 543                        flag_errno_math ? ATTR_NOTHROW_LIST
 544                                        : (flag_unsafe_math_optimizations
 545                                           ? ATTR_CONST_NOTHROW_LIST
 546                                           : ATTR_PURE_NOTHROW_LIST))
 547 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWF,
 548                        "__builtin_powf",
 549                        BT_FN_FLOAT_FLOAT_FLOAT,
 550                        flag_errno_math ? ATTR_NOTHROW_LIST
 551                                        : (flag_unsafe_math_optimizations
 552                                           ? ATTR_CONST_NOTHROW_LIST
 553                                           : ATTR_PURE_NOTHROW_LIST))
 554 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2F,
 555                        "__builtin_atan2f",
 556                        BT_FN_FLOAT_FLOAT_FLOAT,
 557                        flag_errno_math ? ATTR_NOTHROW_LIST
 558                                        : (flag_unsafe_math_optimizations
 559                                           ? ATTR_CONST_NOTHROW_LIST
 560                                           : ATTR_PURE_NOTHROW_LIST))
 561 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODF,
 562                        "__builtin_fmodf",
 563                        BT_FN_FLOAT_FLOAT_FLOAT,
 564                        flag_errno_math ? ATTR_NOTHROW_LIST
 565                                        : (flag_unsafe_math_optimizations
 566                                           ? ATTR_CONST_NOTHROW_LIST
 567                                           : ATTR_PURE_NOTHROW_LIST))
 568 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTL,
 569                        "__builtin_sqrtl",
 570                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 571                        flag_errno_math ? ATTR_NOTHROW_LIST
 572                                        : (flag_unsafe_math_optimizations
 573                                           ? ATTR_CONST_NOTHROW_LIST
 574                                           : ATTR_PURE_NOTHROW_LIST))
 575 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINL,
 576                        "__builtin_sinl",
 577                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 578                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 579                                                       : ATTR_PURE_NOTHROW_LIST)
 580 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSL,
 581                        "__builtin_cosl",
 582                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 583                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 584                                                       : ATTR_PURE_NOTHROW_LIST)
 585 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPL,
 586                        "__builtin_expl",
 587                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 588                        flag_errno_math ? ATTR_NOTHROW_LIST
 589                                        : (flag_unsafe_math_optimizations
 590                                           ? ATTR_CONST_NOTHROW_LIST
 591                                           : ATTR_PURE_NOTHROW_LIST))
 592 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGL,
 593                        "__builtin_logl",
 594                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 595                        flag_errno_math ? ATTR_NOTHROW_LIST
 596                                        : (flag_unsafe_math_optimizations
 597                                           ? ATTR_CONST_NOTHROW_LIST
 598                                           : ATTR_PURE_NOTHROW_LIST))
 599 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWL,
 600                        "__builtin_powl",
 601                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 602                        flag_errno_math ? ATTR_NOTHROW_LIST
 603                                        : (flag_unsafe_math_optimizations
 604                                           ? ATTR_CONST_NOTHROW_LIST
 605                                           : ATTR_PURE_NOTHROW_LIST))
 606 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2L,
 607                        "__builtin_atan2l",
 608                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 609                        flag_errno_math ? ATTR_NOTHROW_LIST
 610                                        : (flag_unsafe_math_optimizations
 611                                           ? ATTR_CONST_NOTHROW_LIST
 612                                           : ATTR_PURE_NOTHROW_LIST))
 613 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODL,
 614                        "__builtin_fmodl",
 615                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 616                        flag_errno_math ? ATTR_NOTHROW_LIST
 617                                        : (flag_unsafe_math_optimizations
 618                                           ? ATTR_CONST_NOTHROW_LIST
 619                                           : ATTR_PURE_NOTHROW_LIST))
 620
 621 DEF_GCC_BUILTIN(BUILT_IN_INF,
 622                 "__builtin_inf",
 623                 BT_FN_DOUBLE,
 624                 ATTR_CONST_NOTHROW_LIST)
 625 DEF_GCC_BUILTIN(BUILT_IN_INFF,
 626                 "__builtin_inff",
 627                 BT_FN_FLOAT,
 628                 ATTR_CONST_NOTHROW_LIST)
 629 DEF_GCC_BUILTIN(BUILT_IN_INFL,
 630                 "__builtin_infl",
 631                 BT_FN_LONG_DOUBLE,
 632                 ATTR_CONST_NOTHROW_LIST)
 633
 634 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VAL,
 635                 "__builtin_huge_val",
 636                 BT_FN_DOUBLE,
 637                 ATTR_CONST_NOTHROW_LIST)
 638 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALF,
 639                 "__builtin_huge_valf",
 640                 BT_FN_FLOAT,
 641                 ATTR_CONST_NOTHROW_LIST)
 642 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALL,
 643                 "__builtin_huge_vall",
 644                 BT_FN_LONG_DOUBLE,
 645                 ATTR_CONST_NOTHROW_LIST)
 646
 647 DEF_LIB_BUILTIN(BUILT_IN_NAN,
 648                 "__builtin_nan",
 649                 BT_FN_DOUBLE_CONST_STRING,
 650                 ATTR_CONST_NOTHROW_LIST)
 651 DEF_LIB_BUILTIN(BUILT_IN_NANF,
 652                 "__builtin_nanf",
 653                 BT_FN_FLOAT_CONST_STRING,
 654                 ATTR_CONST_NOTHROW_LIST)
 655 DEF_LIB_BUILTIN(BUILT_IN_NANL,
 656                 "__builtin_nanl",
 657                 BT_FN_LONG_DOUBLE_CONST_STRING,
 658                 ATTR_CONST_NOTHROW_LIST)
 659
 660 DEF_LIB_BUILTIN(BUILT_IN_NANS,
 661                 "__builtin_nans",
 662                 BT_FN_DOUBLE_CONST_STRING,
 663                 ATTR_CONST_NOTHROW_LIST)
 664 DEF_LIB_BUILTIN(BUILT_IN_NANSF,
 665                 "__builtin_nansf",
 666                 BT_FN_FLOAT_CONST_STRING,
 667                 ATTR_CONST_NOTHROW_LIST)
 668 DEF_LIB_BUILTIN(BUILT_IN_NANSL,
 669                 "__builtin_nansl",
 670                 BT_FN_LONG_DOUBLE_CONST_STRING,
 671                 ATTR_CONST_NOTHROW_LIST)
 672
 673 DEF_GCC_BUILTIN(BUILT_IN_SAVEREGS,
 674                 "__builtin_saveregs",
 675                 BT_FN_PTR_VAR,
 676                 ATTR_NULL)
 677 DEF_GCC_BUILTIN(BUILT_IN_CLASSIFY_TYPE,
 678                 "__builtin_classify_type",
 679                 BT_FN_INT_VAR,
 680                 ATTR_NULL)
 681 DEF_GCC_BUILTIN(BUILT_IN_NEXT_ARG,
 682                 "__builtin_next_arg",
 683                 BT_FN_PTR_VAR,
 684                 ATTR_NULL)
 685 DEF_GCC_BUILTIN(BUILT_IN_ARGS_INFO,
 686                 "__builtin_args_info",
 687                 BT_FN_INT_INT,
 688                 ATTR_NULL)
 689 DEF_GCC_BUILTIN(BUILT_IN_CONSTANT_P,
 690                 "__builtin_constant_p",
 691                 BT_FN_INT_VAR,
 692                 ATTR_CONST_NOTHROW_LIST)
 693 DEF_GCC_BUILTIN(BUILT_IN_FRAME_ADDRESS,
 694                 "__builtin_frame_address",
 695                 BT_FN_PTR_UNSIGNED,
 696                 ATTR_NULL)
 697 DEF_GCC_BUILTIN(BUILT_IN_RETURN_ADDRESS,
 698                 "__builtin_return_address",
 699                 BT_FN_PTR_UNSIGNED,
 700                 ATTR_NULL)
 701 DEF_GCC_BUILTIN(BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
 702                 "__builtin_aggregate_incoming_address",
 703                 BT_FN_PTR_VAR,
 704                 ATTR_NULL)
 705 DEF_GCC_BUILTIN(BUILT_IN_APPLY_ARGS,
 706                 "__builtin_apply_args",
 707                 BT_FN_PTR_VAR,
 708                 ATTR_NULL)
 709 DEF_GCC_BUILTIN(BUILT_IN_APPLY,
 710                 "__builtin_apply",
 711                 BT_FN_PTR_PTR_FN_VOID_VAR_PTR_SIZE,
 712                 ATTR_NULL)
 713 DEF_GCC_BUILTIN(BUILT_IN_RETURN,
 714                 "__builtin_return",
 715                 BT_FN_VOID_PTR,
 716                 ATTR_NORETURN_NOTHROW_LIST)
 717 DEF_GCC_BUILTIN(BUILT_IN_SETJMP,
 718                 "__builtin_setjmp",
 719                 BT_FN_INT_PTR,
 720                 ATTR_NULL)
 721 DEF_GCC_BUILTIN(BUILT_IN_LONGJMP,
 722                 "__builtin_longjmp",
 723                 BT_FN_VOID_PTR_INT,
 724                 ATTR_NORETURN_NOTHROW_LIST)
 725 DEF_GCC_BUILTIN(BUILT_IN_TRAP,
 726                 "__builtin_trap",
 727                 BT_FN_VOID,
 728                 ATTR_NORETURN_NOTHROW_LIST)
 729 DEF_GCC_BUILTIN(BUILT_IN_PREFETCH,
 730                 "__builtin_prefetch",
 731                 BT_FN_VOID_CONST_PTR_VAR,
 732                 ATTR_NULL)
 733
 734 /* stdio.h builtins (without FILE *).  */
 735
 736 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF,
 737                           "__builtin_printf",
 738                           BT_FN_INT_CONST_STRING_VAR,
 739                           ATTR_FORMAT_PRINTF_1_2)
 740 DEF_LIB_BUILTIN(BUILT_IN_PUTCHAR,
 741                 "__builtin_putchar",
 742                 BT_FN_INT_INT,
 743                 ATTR_NOTHROW_LIST)
 744 DEF_LIB_BUILTIN(BUILT_IN_PUTS,
 745                 "__builtin_puts",
 746                 BT_FN_INT_CONST_STRING,
 747                 ATTR_NOTHROW_LIST)
 748 DEF_C99_BUILTIN(BUILT_IN_SNPRINTF,
 749                 "__builtin_snprintf",
 750                 BT_FN_INT_STRING_SIZE_CONST_STRING_VAR,
 751                 ATTR_FORMAT_PRINTF_3_4)
 752 DEF_LIB_BUILTIN(BUILT_IN_SPRINTF,
 753                 "__builtin_sprintf",
 754                 BT_FN_INT_STRING_CONST_STRING_VAR,
 755                 ATTR_FORMAT_PRINTF_2_3)
 756 DEF_LIB_BUILTIN(BUILT_IN_SCANF,
 757                 "__builtin_scanf",
 758                 BT_FN_INT_CONST_STRING_VAR,
 759                 ATTR_FORMAT_SCANF_1_2)
 760 DEF_LIB_BUILTIN(BUILT_IN_SSCANF,
 761                 "__builtin_sscanf",
 762                 BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
 763                 ATTR_FORMAT_SCANF_2_3)
 764 DEF_LIB_BUILTIN(BUILT_IN_VPRINTF,
 765                 "__builtin_vprintf",
 766                 BT_FN_INT_CONST_STRING_VALIST_ARG,
 767                 ATTR_FORMAT_PRINTF_1_0)
 768 DEF_C99_BUILTIN(BUILT_IN_VSCANF,
 769                 "__builtin_vscanf",
 770                 BT_FN_INT_CONST_STRING_VALIST_ARG,
 771                 ATTR_FORMAT_SCANF_1_0)
 772 DEF_C99_BUILTIN(BUILT_IN_VSSCANF,
 773                 "__builtin_vsscanf",
 774                 BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
 775                 ATTR_FORMAT_SCANF_2_0)
 776 DEF_C99_BUILTIN(BUILT_IN_VSNPRINTF,
 777                 "__builtin_vsnprintf",
 778                 BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
 779                 ATTR_FORMAT_PRINTF_3_0)
 780 DEF_LIB_BUILTIN(BUILT_IN_VSPRINTF,
 781                 "__builtin_vsprintf",
 782                 BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
 783                 ATTR_FORMAT_PRINTF_2_0)
 784
 785
 786 /* stdio.h builtins (with FILE *).  */
 787
 788 /* Declare the __builtin_ style with arguments and the regular style
 789    without them.  We rely on stdio.h to supply the arguments for the
 790    regular style declaration since we had to use void* instead of
 791    FILE* in the __builtin_ prototype supplied here.  */
 792
 793 DEF_FALLBACK_BUILTIN(BUILT_IN_FPUTC,
 794                      "__builtin_fputc",
 795                      BT_FN_INT_INT_PTR,
 796                      ATTR_NOTHROW_LIST)
 797 DEF_BUILTIN (BUILT_IN_FPUTS,
 798              "__builtin_fputs",
 799              BUILT_IN_NORMAL,
 800              BT_FN_INT_CONST_STRING_PTR,
 801              BT_FN_INT_VAR,
 802              true, true, false, ATTR_NOTHROW_LIST, true)
 803 DEF_FALLBACK_BUILTIN(BUILT_IN_FWRITE,
 804                      "__builtin_fwrite",
 805                      BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR,
 806                       ATTR_NOTHROW_LIST)
 807 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF,
 808                          "__builtin_fprintf",
 809                          BT_FN_INT_PTR_CONST_STRING_VAR,
 810                          ATTR_FORMAT_PRINTF_2_3)
 811
 812 /* stdio unlocked builtins (without FILE *).  */
 813
 814 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
 815                          "__builtin_putchar_unlocked",
 816                          BT_FN_INT_INT)
 817 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
 818                          "__builtin_puts_unlocked",
 819                          BT_FN_INT_CONST_STRING)
 820 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
 821                               "__builtin_printf_unlocked",
 822                               BT_FN_INT_CONST_STRING_VAR,
 823                               ATTR_FORMAT_PRINTF_1_2)
 824
 825 /* stdio unlocked builtins (with FILE *).  */
 826
 827 /* Declare the __builtin_ style with arguments and the regular style
 828    without them.  We rely on stdio.h to supply the arguments for the
 829    regular style declaration since we had to use void* instead of
 830    FILE* in the __builtin_ prototype supplied here.  */
 831
 832 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
 833                          "__builtin_fputc_unlocked",
 834                          BT_FN_INT_INT_PTR)
 835 DEF_BUILTIN (BUILT_IN_FPUTS_UNLOCKED,
 836              "__builtin_fputs_unlocked",
 837              BUILT_IN_NORMAL,
 838              BT_FN_INT_CONST_STRING_PTR,
 839              BT_FN_INT_VAR,
 840              true, true, true, ATTR_NOTHROW_LIST, true)
 841 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
 842                          "__builtin_fwrite_unlocked",
 843                          BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR)
 844 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
 845                               "__builtin_fprintf_unlocked",
 846                               BT_FN_INT_PTR_CONST_STRING_VAR,
 847                               ATTR_FORMAT_PRINTF_2_3)
 848
 849   /* ISO C99 floating point unordered comparisons.  */
 850 DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
 851                 "__builtin_isgreater",
 852                 BT_FN_INT_VAR,
 853                 ATTR_CONST_NOTHROW_LIST)
 854 DEF_GCC_BUILTIN(BUILT_IN_ISGREATEREQUAL,
 855                 "__builtin_isgreaterequal",
 856                 BT_FN_INT_VAR,
 857                 ATTR_CONST_NOTHROW_LIST)
 858 DEF_GCC_BUILTIN(BUILT_IN_ISLESS,
 859                 "__builtin_isless",
 860                 BT_FN_INT_VAR,
 861                 ATTR_CONST_NOTHROW_LIST)
 862 DEF_GCC_BUILTIN(BUILT_IN_ISLESSEQUAL,
 863                 "__builtin_islessequal",
 864                 BT_FN_INT_VAR,
 865                 ATTR_CONST_NOTHROW_LIST)
 866 DEF_GCC_BUILTIN(BUILT_IN_ISLESSGREATER,
 867                 "__builtin_islessgreater",
 868                 BT_FN_INT_VAR,
 869                 ATTR_CONST_NOTHROW_LIST)
 870 DEF_GCC_BUILTIN(BUILT_IN_ISUNORDERED,
 871                 "__builtin_isunordered",
 872                 BT_FN_INT_VAR,
 873                 ATTR_CONST_NOTHROW_LIST)
 874
 875 /* Various hooks for the DWARF 2 __throw routine.  */
 876 DEF_GCC_BUILTIN(BUILT_IN_UNWIND_INIT,
 877                 "__builtin_unwind_init",
 878                 BT_FN_VOID,
 879                 ATTR_NULL)
 880 DEF_GCC_BUILTIN(BUILT_IN_DWARF_CFA,
 881                 "__builtin_dwarf_cfa",
 882                 BT_FN_PTR,
 883                 ATTR_NULL)
 884 DEF_GCC_BUILTIN(BUILT_IN_DWARF_SP_COLUMN,
 885                 "__builtin_dwarf_sp_column",
 886                 BT_FN_UNSIGNED,
 887                 ATTR_NULL)
 888 DEF_GCC_BUILTIN(BUILT_IN_INIT_DWARF_REG_SIZES,
 889                 "__builtin_init_dwarf_reg_size_table",
 890                 BT_FN_VOID_PTR,
 891                 ATTR_NULL)
 892 DEF_GCC_BUILTIN(BUILT_IN_FROB_RETURN_ADDR,
 893                 "__builtin_frob_return_addr",
 894                 BT_FN_PTR_PTR,
 895                 ATTR_NULL)
 896 DEF_GCC_BUILTIN(BUILT_IN_EXTRACT_RETURN_ADDR,
 897                 "__builtin_extract_return_addr",
 898                 BT_FN_PTR_PTR,
 899                 ATTR_NULL)
 900 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN,
 901                 "__builtin_eh_return",
 902                 BT_FN_VOID_PTRMODE_PTR,
 903                 ATTR_NORETURN_NOTHROW_LIST)
 904 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN_DATA_REGNO,
 905                 "__builtin_eh_return_data_regno",
 906                 BT_FN_INT_INT,
 907                 ATTR_NULL)
 908
 909 /* Variable argument list (stdarg.h) support */
 910 DEF_GCC_BUILTIN(BUILT_IN_VA_START,
 911                 "__builtin_va_start",
 912                 BT_FN_VOID_VALIST_REF_VAR,
 913                 ATTR_NULL)
 914 DEF_GCC_BUILTIN(BUILT_IN_STDARG_START,          /* backward compat */
 915                 "__builtin_stdarg_start",
 916                 BT_FN_VOID_VALIST_REF_VAR,
 917                 ATTR_NULL)
 918 DEF_GCC_BUILTIN(BUILT_IN_VA_END,
 919                 "__builtin_va_end",
 920                 BT_FN_VOID_VALIST_REF,
 921                 ATTR_NULL)
 922 DEF_GCC_BUILTIN(BUILT_IN_VA_COPY,
 923                 "__builtin_va_copy",
 924                 BT_FN_VOID_VALIST_REF_VALIST_ARG,
 925                 ATTR_NULL)
 926
 927 DEF_GCC_BUILTIN(BUILT_IN_EXPECT,
 928                 "__builtin_expect",
 929                 BT_FN_LONG_LONG_LONG,
 930                 ATTR_NULL)
 931
 932 /* Declare abort, exit, _exit and _Exit */
 933 DEF_LIB_BUILTIN(BUILT_IN_ABORT,
 934                  "__builtin_abort",
 935                 BT_FN_VOID,
 936                 ATTR_NORETURN_NOTHROW_LIST)
 937 DEF_LIB_BUILTIN(BUILT_IN_EXIT,
 938                 "__builtin_exit",
 939                 BT_FN_VOID_INT,
 940                 ATTR_NORETURN_NOTHROW_LIST)
 941 DEF_EXT_LIB_BUILTIN(BUILT_IN__EXIT,
 942                     "__builtin__exit",
 943                     BT_FN_VOID_INT,
 944                     ATTR_NORETURN_NOTHROW_LIST)
 945 DEF_C99_BUILTIN(BUILT_IN__EXIT2,
 946                 "__builtin__Exit",
 947                 BT_FN_VOID_INT,
 948                 ATTR_NORETURN_NOTHROW_LIST)
 949
 950 /* Declare malloc, calloc and strdup.  */
 951 DEF_LIB_BUILTIN(BUILT_IN_MALLOC,
 952                 "__builtin_malloc",
 953                 BT_FN_PTR_SIZE,
 954                 ATTR_MALLOC_NOTHROW_LIST)
 955
 956 DEF_LIB_BUILTIN(BUILT_IN_CALLOC,
 957                 "__builtin_calloc",
 958                 BT_FN_PTR_SIZE_SIZE,
 959                 ATTR_MALLOC_NOTHROW_LIST)
 960
 961 DEF_EXT_LIB_BUILTIN(BUILT_IN_STRDUP,
 962                     "__builtin_strdup",
 963                     BT_FN_STRING_CONST_STRING,
 964                     ATTR_MALLOC_NOTHROW_LIST)
 965