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 /* A library builtin (like __builtin_strchr) is a builtin equivalent
  74    of an ANSI/ISO standard library function.  In addition to the
  75    `__builtin' version, we will create an ordinary version (e.g,
  76    `strchr') as well.  If we cannot compute the answer using the
  77    builtin function, we will fall back to the standard library
  78    version.  */
  79 #undef DEF_LIB_BUILTIN
  80 #define DEF_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
  81   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  82                true, true, false, ATTRS, true)
  83
  84 /* Like DEF_LIB_BUILTIN, except that the function is not one that is
  85    specified by ANSI/ISO C.  So, when we're being fully conformant we
  86    ignore the version of these builtins that does not begin with
  87    __builtin.  */
  88 #undef DEF_EXT_LIB_BUILTIN
  89 #define DEF_EXT_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)    \
  90   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  91                true, true, true, ATTRS, false)
  92
  93 /* Like DEF_LIB_BUILTIN, except that the function is only a part of
  94    the standard in C99 or above.  */
  95 #undef DEF_C99_BUILTIN
  96 #define DEF_C99_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
  97   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  98                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
  99
 100 /* Builtin that is specified by C99 and C90 reserve the name for future use.
 101    We can still recognize the builtin in C90 mode but we can't produce it
 102    implicitly.  */
 103 #undef DEF_C99_C90RES_BUILTIN
 104 #define DEF_C99_C90RES_BUILTIN(ENUM, NAME, TYPE, ATTRS) \
 105   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 106                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 107
 108
 109 DEF_LIB_BUILTIN(BUILT_IN_ABORT,
 110                 "__builtin_abort",
 111                 BT_FN_VOID,
 112                 ATTR_NORETURN_NOTHROW_LIST)
 113
 114 DEF_LIB_BUILTIN(BUILT_IN_ABS,
 115                 "__builtin_abs",
 116                 BT_FN_INT_INT,
 117                 ATTR_CONST_NOTHROW_LIST)
 118
 119 DEF_GCC_BUILTIN(BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
 120                 "__builtin_aggregate_incoming_address",
 121                 BT_FN_PTR_VAR,
 122                 ATTR_NULL)
 123
 124 DEF_EXT_LIB_BUILTIN(BUILT_IN_ALLOCA,
 125                     "__builtin_alloca",
 126                     BT_FN_PTR_SIZE,
 127                     ATTR_MALLOC_NOTHROW_LIST)
 128
 129 DEF_GCC_BUILTIN(BUILT_IN_APPLY,
 130                 "__builtin_apply",
 131                 BT_FN_PTR_PTR_FN_VOID_VAR_PTR_SIZE,
 132                 ATTR_NULL)
 133
 134 DEF_GCC_BUILTIN(BUILT_IN_APPLY_ARGS,
 135                 "__builtin_apply_args",
 136                 BT_FN_PTR_VAR,
 137                 ATTR_NULL)
 138
 139 DEF_GCC_BUILTIN(BUILT_IN_ARGS_INFO,
 140                 "__builtin_args_info",
 141                 BT_FN_INT_INT,
 142                 ATTR_NULL)
 143
 144 DEF_LIB_BUILTIN(BUILT_IN_ATAN,
 145                 "__builtin_atan",
 146                 BT_FN_DOUBLE_DOUBLE,
 147                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 148                                                : ATTR_PURE_NOTHROW_LIST)
 149
 150 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATANF,
 151                        "__builtin_atanf",
 152                        BT_FN_FLOAT_FLOAT,
 153                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 154                                                       : ATTR_PURE_NOTHROW_LIST)
 155
 156 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATANL,
 157                        "__builtin_atanl",
 158                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 159                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 160                                                       : ATTR_PURE_NOTHROW_LIST)
 161
 162 DEF_LIB_BUILTIN(BUILT_IN_ATAN2,
 163                 "__builtin_atan2",
 164                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 165                 flag_errno_math ? ATTR_NOTHROW_LIST
 166                                 : (flag_unsafe_math_optimizations
 167                                    ? ATTR_CONST_NOTHROW_LIST
 168                                    : ATTR_PURE_NOTHROW_LIST))
 169
 170 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2F,
 171                        "__builtin_atan2f",
 172                        BT_FN_FLOAT_FLOAT_FLOAT,
 173                        flag_errno_math ? ATTR_NOTHROW_LIST
 174                                        : (flag_unsafe_math_optimizations
 175                                           ? ATTR_CONST_NOTHROW_LIST
 176                                           : ATTR_PURE_NOTHROW_LIST))
 177
 178 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2L,
 179                        "__builtin_atan2l",
 180                        BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE,
 181                        flag_errno_math ? ATTR_NOTHROW_LIST
 182                                        : (flag_unsafe_math_optimizations
 183                                           ? ATTR_CONST_NOTHROW_LIST
 184                                           : ATTR_PURE_NOTHROW_LIST))
 185
 186 /* bcmp has traditionally accepted NULL pointers when the length
 187    parameter is zero, so don't apply attribute "nonnull".  */
 188 DEF_EXT_LIB_BUILTIN(BUILT_IN_BCMP,
 189                     "__builtin_bcmp",
 190                     BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 191                     ATTR_PURE_NOTHROW_LIST)
 192
 193 /* bcopy has traditionally accepted NULL pointers when the length
 194    parameter is zero, so don't apply attribute "nonnull".  */
 195 DEF_EXT_LIB_BUILTIN(BUILT_IN_BCOPY,
 196                     "__builtin_bcopy",
 197                     BT_FN_VOID_CONST_PTR_PTR_SIZE,
 198                     ATTR_NOTHROW_LIST)
 199
 200 /* bzero has traditionally accepted a NULL pointer when the length
 201    parameter is zero, so don't apply attribute "nonnull".  */
 202 DEF_EXT_LIB_BUILTIN(BUILT_IN_BZERO,
 203                     "__builtin_bzero",
 204                     BT_FN_VOID_PTR_SIZE,
 205                     ATTR_NOTHROW_LIST)
 206
 207 DEF_C99_BUILTIN(BUILT_IN_CABS,
 208                 "__builtin_cabs",
 209                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 210                 ATTR_CONST_NOTHROW_LIST)
 211
 212 DEF_C99_BUILTIN(BUILT_IN_CABSF,
 213                 "__builtin_cabsf",
 214                 BT_FN_FLOAT_COMPLEX_FLOAT,
 215                 ATTR_CONST_NOTHROW_LIST)
 216
 217 DEF_C99_BUILTIN(BUILT_IN_CABSL,
 218                 "__builtin_cabsl",
 219                 BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE,
 220                 ATTR_CONST_NOTHROW_LIST)
 221
 222 DEF_LIB_BUILTIN(BUILT_IN_CALLOC,
 223                 "__builtin_calloc",
 224                 BT_FN_PTR_SIZE_SIZE,
 225                 ATTR_MALLOC_NOTHROW_LIST)
 226
 227 DEF_LIB_BUILTIN(BUILT_IN_CEIL,
 228                 "__builtin_ceil",
 229                 BT_FN_DOUBLE_DOUBLE,
 230                 ATTR_CONST_NOTHROW_LIST)
 231
 232 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILF,
 233                        "__builtin_ceilf",
 234                        BT_FN_FLOAT_FLOAT,
 235                        ATTR_CONST_NOTHROW_LIST)
 236
 237 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILL,
 238                        "__builtin_ceill",
 239                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 240                        ATTR_CONST_NOTHROW_LIST)
 241
 242 DEF_C99_BUILTIN(BUILT_IN_CIMAG,
 243                 "__builtin_cimag",
 244                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 245                 ATTR_CONST_NOTHROW_LIST)
 246
 247 DEF_C99_BUILTIN(BUILT_IN_CIMAGF,
 248                 "__builtin_cimagf",
 249                 BT_FN_FLOAT_COMPLEX_FLOAT,
 250                 ATTR_CONST_NOTHROW_LIST)
 251
 252 DEF_C99_BUILTIN(BUILT_IN_CIMAGL,
 253                 "__builtin_cimagl",
 254                 BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE,
 255                 ATTR_CONST_NOTHROW_LIST)
 256
 257 DEF_GCC_BUILTIN(BUILT_IN_CLASSIFY_TYPE,
 258                 "__builtin_classify_type",
 259                 BT_FN_INT_VAR,
 260                 ATTR_NULL)
 261
 262 DEF_GCC_BUILTIN(BUILT_IN_CLZ,
 263                 "__builtin_clz",
 264                 BT_FN_INT_INT,
 265                 ATTR_CONST_NOTHROW_LIST)
 266
 267 DEF_GCC_BUILTIN(BUILT_IN_CLZL,
 268                 "__builtin_clzl",
 269                 BT_FN_INT_LONG,
 270                 ATTR_CONST_NOTHROW_LIST)
 271
 272 DEF_GCC_BUILTIN(BUILT_IN_CLZLL,
 273                 "__builtin_clzll",
 274                 BT_FN_INT_LONGLONG,
 275                 ATTR_CONST_NOTHROW_LIST)
 276
 277 DEF_C99_BUILTIN(BUILT_IN_CONJ,
 278                 "__builtin_conj",
 279                 BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
 280                 ATTR_CONST_NOTHROW_LIST)
 281
 282 DEF_C99_BUILTIN(BUILT_IN_CONJF,
 283                 "__builtin_conjf",
 284                 BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT,
 285                 ATTR_CONST_NOTHROW_LIST)
 286
 287 DEF_C99_BUILTIN(BUILT_IN_CONJL,
 288                 "__builtin_conjl",
 289                 BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
 290                 ATTR_CONST_NOTHROW_LIST)
 291
 292 DEF_GCC_BUILTIN(BUILT_IN_CONSTANT_P,
 293                 "__builtin_constant_p",
 294                 BT_FN_INT_VAR,
 295                 ATTR_CONST_NOTHROW_LIST)
 296
 297 DEF_LIB_BUILTIN(BUILT_IN_COS,
 298                 "__builtin_cos",
 299                 BT_FN_DOUBLE_DOUBLE,
 300                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 301                                                : ATTR_PURE_NOTHROW_LIST)
 302
 303 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSF,
 304                        "__builtin_cosf",
 305                        BT_FN_FLOAT_FLOAT,
 306                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 307                                                       : ATTR_PURE_NOTHROW_LIST)
 308
 309 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSL,
 310                        "__builtin_cosl",
 311                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 312                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 313                                                       : ATTR_PURE_NOTHROW_LIST)
 314
 315 DEF_C99_BUILTIN(BUILT_IN_CREAL,
 316                 "__builtin_creal",
 317                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 318                 ATTR_CONST_NOTHROW_LIST)
 319
 320 DEF_C99_BUILTIN(BUILT_IN_CREALF,
 321                 "__builtin_crealf",
 322                 BT_FN_FLOAT_COMPLEX_FLOAT,
 323                 ATTR_CONST_NOTHROW_LIST)
 324
 325 DEF_C99_BUILTIN(BUILT_IN_CREALL,
 326                 "__builtin_creall",
 327                 BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE,
 328                 ATTR_CONST_NOTHROW_LIST)
 329
 330 DEF_GCC_BUILTIN(BUILT_IN_CTZ,
 331                 "__builtin_ctz",
 332                 BT_FN_INT_INT,
 333                 ATTR_CONST_NOTHROW_LIST)
 334
 335 DEF_GCC_BUILTIN(BUILT_IN_CTZL,
 336                 "__builtin_ctzl",
 337                 BT_FN_INT_LONG,
 338                 ATTR_CONST_NOTHROW_LIST)
 339
 340 DEF_GCC_BUILTIN(BUILT_IN_CTZLL,
 341                 "__builtin_ctzll",
 342                 BT_FN_INT_LONGLONG,
 343                 ATTR_CONST_NOTHROW_LIST)
 344
 345 DEF_GCC_BUILTIN(BUILT_IN_DWARF_CFA,
 346                 "__builtin_dwarf_cfa",
 347                 BT_FN_PTR,
 348                 ATTR_NULL)
 349
 350 DEF_GCC_BUILTIN(BUILT_IN_DWARF_SP_COLUMN,
 351                 "__builtin_dwarf_sp_column",
 352                 BT_FN_UNSIGNED,
 353                 ATTR_NULL)
 354
 355 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN,
 356                 "__builtin_eh_return",
 357                 BT_FN_VOID_PTRMODE_PTR,
 358                 ATTR_NORETURN_NOTHROW_LIST)
 359
 360 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN_DATA_REGNO,
 361                 "__builtin_eh_return_data_regno",
 362                 BT_FN_INT_INT,
 363                 ATTR_NULL)
 364
 365 DEF_LIB_BUILTIN(BUILT_IN_EXIT,
 366                 "__builtin_exit",
 367                 BT_FN_VOID_INT,
 368                 ATTR_NORETURN_NOTHROW_LIST)
 369
 370 DEF_EXT_LIB_BUILTIN(BUILT_IN__EXIT,
 371                     "__builtin__exit",
 372                     BT_FN_VOID_INT,
 373                     ATTR_NORETURN_NOTHROW_LIST)
 374
 375 DEF_C99_BUILTIN(BUILT_IN__EXIT2,
 376                 "__builtin__Exit",
 377                 BT_FN_VOID_INT,
 378                 ATTR_NORETURN_NOTHROW_LIST)
 379
 380 DEF_LIB_BUILTIN(BUILT_IN_EXP,
 381                 "__builtin_exp",
 382                 BT_FN_DOUBLE_DOUBLE,
 383                 flag_errno_math ? ATTR_NOTHROW_LIST
 384                                 : (flag_unsafe_math_optimizations
 385                                    ? ATTR_CONST_NOTHROW_LIST
 386                                    : ATTR_PURE_NOTHROW_LIST))
 387
 388 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPF,
 389                        "__builtin_expf",
 390                        BT_FN_FLOAT_FLOAT,
 391                        flag_errno_math ? ATTR_NOTHROW_LIST
 392                                        : (flag_unsafe_math_optimizations
 393                                           ? ATTR_CONST_NOTHROW_LIST
 394                                           : ATTR_PURE_NOTHROW_LIST))
 395
 396 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPL,
 397                        "__builtin_expl",
 398                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 399                        flag_errno_math ? ATTR_NOTHROW_LIST
 400                                        : (flag_unsafe_math_optimizations
 401                                           ? ATTR_CONST_NOTHROW_LIST
 402                                           : ATTR_PURE_NOTHROW_LIST))
 403
 404 DEF_GCC_BUILTIN(BUILT_IN_EXPECT,
 405                 "__builtin_expect",
 406                 BT_FN_LONG_LONG_LONG,
 407                 ATTR_NULL)
 408
 409 DEF_GCC_BUILTIN(BUILT_IN_EXTRACT_RETURN_ADDR,
 410                 "__builtin_extract_return_addr",
 411                 BT_FN_PTR_PTR,
 412                 ATTR_NULL)
 413
 414 DEF_LIB_BUILTIN(BUILT_IN_FABS,
 415                 "__builtin_fabs",
 416                 BT_FN_DOUBLE_DOUBLE,
 417                 ATTR_CONST_NOTHROW_LIST)
 418
 419 DEF_C99_C90RES_BUILTIN(BUILT_IN_FABSF,
 420                        "__builtin_fabsf",
 421                        BT_FN_FLOAT_FLOAT,
 422                        ATTR_CONST_NOTHROW_LIST)
 423
 424 DEF_C99_C90RES_BUILTIN(BUILT_IN_FABSL,
 425                        "__builtin_fabsl",
 426                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 427                        ATTR_CONST_NOTHROW_LIST)
 428
 429 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFS,
 430                     "__builtin_ffs",
 431                     BT_FN_INT_INT,
 432                     ATTR_CONST_NOTHROW_LIST)
 433
 434 DEF_GCC_BUILTIN(BUILT_IN_FFSL,
 435                 "__builtin_ffsl",
 436                 BT_FN_INT_LONG,
 437                 ATTR_CONST_NOTHROW_LIST)
 438
 439 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFSLL,
 440                     "__builtin_ffsll",
 441                     BT_FN_INT_LONGLONG,
 442                     ATTR_CONST_NOTHROW_LIST)
 443
 444 DEF_LIB_BUILTIN(BUILT_IN_FLOOR,
 445                 "__builtin_floor",
 446                 BT_FN_DOUBLE_DOUBLE,
 447                 ATTR_CONST_NOTHROW_LIST)
 448
 449 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORF,
 450                        "__builtin_floorf",
 451                        BT_FN_FLOAT_FLOAT,
 452                        ATTR_CONST_NOTHROW_LIST)
 453
 454 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORL,
 455                        "__builtin_floorl",
 456                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 457                        ATTR_CONST_NOTHROW_LIST)
 458
 459 DEF_LIB_BUILTIN(BUILT_IN_FMOD,
 460                 "__builtin_fmod",
 461                 BT_FN_DOUBLE_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
 467 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODF,
 468                        "__builtin_fmodf",
 469                        BT_FN_FLOAT_FLOAT_FLOAT,
 470                        flag_errno_math ? ATTR_NOTHROW_LIST
 471                                        : (flag_unsafe_math_optimizations
 472                                           ? ATTR_CONST_NOTHROW_LIST
 473                                           : ATTR_PURE_NOTHROW_LIST))
 474
 475 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODL,
 476                        "__builtin_fmodl",
 477                        BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE,
 478                        flag_errno_math ? ATTR_NOTHROW_LIST
 479                                        : (flag_unsafe_math_optimizations
 480                                           ? ATTR_CONST_NOTHROW_LIST
 481                                           : ATTR_PURE_NOTHROW_LIST))
 482
 483 DEF_LIB_BUILTIN(BUILT_IN_FPRINTF,
 484                 "__builtin_fprintf",
 485                 BT_FN_INT_PTR_CONST_STRING_VAR,
 486                 ATTR_FORMAT_PRINTF_2_3)
 487
 488 DEF_EXT_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
 489                     "__builtin_fprintf_unlocked",
 490                     BT_FN_INT_PTR_CONST_STRING_VAR,
 491                     ATTR_FORMAT_PRINTF_2_3)
 492
 493 DEF_LIB_BUILTIN(BUILT_IN_FPUTC,
 494                 "__builtin_fputc",
 495                 BT_FN_INT_INT_PTR,
 496                 ATTR_NOTHROW_NONNULL_2)
 497
 498 DEF_EXT_LIB_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
 499                     "__builtin_fputc_unlocked",
 500                     BT_FN_INT_INT_PTR,
 501                     ATTR_NOTHROW_NONNULL_2)
 502
 503 DEF_LIB_BUILTIN(BUILT_IN_FPUTS,
 504                 "__builtin_fputs",
 505                 BT_FN_INT_CONST_STRING_PTR,
 506                 ATTR_NOTHROW_NONNULL_1_2)
 507
 508 DEF_EXT_LIB_BUILTIN(BUILT_IN_FPUTS_UNLOCKED,
 509                     "__builtin_fputs_unlocked",
 510                     BT_FN_INT_CONST_STRING_PTR,
 511                     ATTR_NOTHROW_NONNULL_1_2)
 512
 513 DEF_GCC_BUILTIN(BUILT_IN_FRAME_ADDRESS,
 514                 "__builtin_frame_address",
 515                 BT_FN_PTR_UNSIGNED,
 516                 ATTR_NULL)
 517
 518 DEF_GCC_BUILTIN(BUILT_IN_FROB_RETURN_ADDR,
 519                 "__builtin_frob_return_addr",
 520                 BT_FN_PTR_PTR,
 521                 ATTR_NULL)
 522
 523 DEF_LIB_BUILTIN(BUILT_IN_FWRITE,
 524                 "__builtin_fwrite",
 525                 BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR,
 526                 ATTR_NOTHROW_NONNULL_1_4)
 527
 528 DEF_EXT_LIB_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
 529                     "__builtin_fwrite_unlocked",
 530                     BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR,
 531                     ATTR_NOTHROW_NONNULL_1_4)
 532
 533 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VAL,
 534                 "__builtin_huge_val",
 535                 BT_FN_DOUBLE,
 536                 ATTR_CONST_NOTHROW_LIST)
 537
 538 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALF,
 539                 "__builtin_huge_valf",
 540                 BT_FN_FLOAT,
 541                 ATTR_CONST_NOTHROW_LIST)
 542
 543 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALL,
 544                 "__builtin_huge_vall",
 545                 BT_FN_LONGDOUBLE,
 546                 ATTR_CONST_NOTHROW_LIST)
 547
 548 DEF_C99_BUILTIN(BUILT_IN_IMAXABS,
 549                 "__builtin_imaxabs",
 550                 BT_FN_INTMAX_INTMAX,
 551                 ATTR_CONST_NOTHROW_LIST)
 552
 553 DEF_EXT_LIB_BUILTIN(BUILT_IN_INDEX,
 554                     "__builtin_index",
 555                     BT_FN_STRING_CONST_STRING_INT,
 556                     ATTR_PURE_NOTHROW_NONNULL_1)
 557
 558 DEF_GCC_BUILTIN(BUILT_IN_INF,
 559                 "__builtin_inf",
 560                 BT_FN_DOUBLE,
 561                 ATTR_CONST_NOTHROW_LIST)
 562
 563 DEF_GCC_BUILTIN(BUILT_IN_INFF,
 564                 "__builtin_inff",
 565                 BT_FN_FLOAT,
 566                 ATTR_CONST_NOTHROW_LIST)
 567
 568 DEF_GCC_BUILTIN(BUILT_IN_INFL,
 569                 "__builtin_infl",
 570                 BT_FN_LONGDOUBLE,
 571                 ATTR_CONST_NOTHROW_LIST)
 572
 573 DEF_GCC_BUILTIN(BUILT_IN_INIT_DWARF_REG_SIZES,
 574                 "__builtin_init_dwarf_reg_size_table",
 575                 BT_FN_VOID_PTR,
 576                 ATTR_NULL)
 577
 578 DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
 579                 "__builtin_isgreater",
 580                 BT_FN_INT_VAR,
 581                 ATTR_CONST_NOTHROW_LIST)
 582
 583 DEF_GCC_BUILTIN(BUILT_IN_ISGREATEREQUAL,
 584                 "__builtin_isgreaterequal",
 585                 BT_FN_INT_VAR,
 586                 ATTR_CONST_NOTHROW_LIST)
 587
 588 DEF_GCC_BUILTIN(BUILT_IN_ISLESS,
 589                 "__builtin_isless",
 590                 BT_FN_INT_VAR,
 591                 ATTR_CONST_NOTHROW_LIST)
 592
 593 DEF_GCC_BUILTIN(BUILT_IN_ISLESSEQUAL,
 594                 "__builtin_islessequal",
 595                 BT_FN_INT_VAR,
 596                 ATTR_CONST_NOTHROW_LIST)
 597
 598 DEF_GCC_BUILTIN(BUILT_IN_ISLESSGREATER,
 599                 "__builtin_islessgreater",
 600                 BT_FN_INT_VAR,
 601                 ATTR_CONST_NOTHROW_LIST)
 602
 603 DEF_GCC_BUILTIN(BUILT_IN_ISUNORDERED,
 604                 "__builtin_isunordered",
 605                 BT_FN_INT_VAR,
 606                 ATTR_CONST_NOTHROW_LIST)
 607
 608 DEF_LIB_BUILTIN(BUILT_IN_LABS,
 609                 "__builtin_labs",
 610                 BT_FN_LONG_LONG,
 611                 ATTR_CONST_NOTHROW_LIST)
 612
 613 DEF_C99_BUILTIN(BUILT_IN_LLABS,
 614                 "__builtin_llabs",
 615                 BT_FN_LONGLONG_LONGLONG,
 616                 ATTR_CONST_NOTHROW_LIST)
 617
 618 DEF_LIB_BUILTIN(BUILT_IN_LOG,
 619                 "__builtin_log",
 620                 BT_FN_DOUBLE_DOUBLE,
 621                 flag_errno_math ? ATTR_NOTHROW_LIST
 622                                 : (flag_unsafe_math_optimizations
 623                                    ? ATTR_CONST_NOTHROW_LIST
 624                                    : ATTR_PURE_NOTHROW_LIST))
 625
 626 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGF,
 627                        "__builtin_logf",
 628                        BT_FN_FLOAT_FLOAT,
 629                        flag_errno_math ? ATTR_NOTHROW_LIST
 630                                        : (flag_unsafe_math_optimizations
 631                                           ? ATTR_CONST_NOTHROW_LIST
 632                                           : ATTR_PURE_NOTHROW_LIST))
 633
 634 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGL,
 635                        "__builtin_logl",
 636                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 637                        flag_errno_math ? ATTR_NOTHROW_LIST
 638                                        : (flag_unsafe_math_optimizations
 639                                           ? ATTR_CONST_NOTHROW_LIST
 640                                           : ATTR_PURE_NOTHROW_LIST))
 641
 642 DEF_GCC_BUILTIN(BUILT_IN_LONGJMP,
 643                 "__builtin_longjmp",
 644                 BT_FN_VOID_PTR_INT,
 645                 ATTR_NORETURN_NOTHROW_LIST)
 646
 647 DEF_LIB_BUILTIN(BUILT_IN_MALLOC,
 648                 "__builtin_malloc",
 649                 BT_FN_PTR_SIZE,
 650                 ATTR_MALLOC_NOTHROW_LIST)
 651
 652 DEF_LIB_BUILTIN(BUILT_IN_MEMCMP,
 653                 "__builtin_memcmp",
 654                 BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 655                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 656
 657 DEF_LIB_BUILTIN(BUILT_IN_MEMCPY,
 658                 "__builtin_memcpy",
 659                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 660                 ATTR_NOTHROW_NONNULL_1_2)
 661
 662 DEF_LIB_BUILTIN(BUILT_IN_MEMMOVE,
 663                 "__builtin_memmove",
 664                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 665                 ATTR_NOTHROW_NONNULL_1_2)
 666
 667 DEF_EXT_LIB_BUILTIN(BUILT_IN_MEMPCPY,
 668                 "__builtin_mempcpy",
 669                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 670                 ATTR_NOTHROW_NONNULL_1_2)
 671
 672 DEF_LIB_BUILTIN(BUILT_IN_MEMSET,
 673                 "__builtin_memset",
 674                 BT_FN_PTR_PTR_INT_SIZE,
 675                 ATTR_NOTHROW_NONNULL_1)
 676
 677 DEF_LIB_BUILTIN(BUILT_IN_NAN,
 678                 "__builtin_nan",
 679                 BT_FN_DOUBLE_CONST_STRING,
 680                 ATTR_CONST_NOTHROW_NONNULL_1)
 681
 682 DEF_LIB_BUILTIN(BUILT_IN_NANF,
 683                 "__builtin_nanf",
 684                 BT_FN_FLOAT_CONST_STRING,
 685                 ATTR_CONST_NOTHROW_NONNULL_1)
 686
 687 DEF_LIB_BUILTIN(BUILT_IN_NANL,
 688                 "__builtin_nanl",
 689                 BT_FN_LONGDOUBLE_CONST_STRING,
 690                 ATTR_CONST_NOTHROW_NONNULL_1)
 691
 692 DEF_LIB_BUILTIN(BUILT_IN_NANS,
 693                 "__builtin_nans",
 694                 BT_FN_DOUBLE_CONST_STRING,
 695                 ATTR_CONST_NOTHROW_NONNULL_1)
 696
 697 DEF_LIB_BUILTIN(BUILT_IN_NANSF,
 698                 "__builtin_nansf",
 699                 BT_FN_FLOAT_CONST_STRING,
 700                 ATTR_CONST_NOTHROW_NONNULL_1)
 701
 702 DEF_LIB_BUILTIN(BUILT_IN_NANSL,
 703                 "__builtin_nansl",
 704                 BT_FN_LONGDOUBLE_CONST_STRING,
 705                 ATTR_CONST_NOTHROW_NONNULL_1)
 706
 707 DEF_C99_BUILTIN(BUILT_IN_NEARBYINT,
 708                 "__builtin_nearbyint",
 709                 BT_FN_DOUBLE_DOUBLE,
 710                 ATTR_CONST_NOTHROW_LIST)
 711
 712 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTF,
 713                 "__builtin_nearbyintf",
 714                 BT_FN_FLOAT_FLOAT,
 715                 ATTR_CONST_NOTHROW_LIST)
 716
 717 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTL,
 718                 "__builtin_nearbyintl",
 719                 BT_FN_LONGDOUBLE_LONGDOUBLE,
 720                 ATTR_CONST_NOTHROW_LIST)
 721
 722 DEF_GCC_BUILTIN(BUILT_IN_NEXT_ARG,
 723                 "__builtin_next_arg",
 724                 BT_FN_PTR_VAR,
 725                 ATTR_NULL)
 726
 727 DEF_GCC_BUILTIN(BUILT_IN_PARITY,
 728                 "__builtin_parity",
 729                 BT_FN_INT_INT,
 730                 ATTR_CONST_NOTHROW_LIST)
 731
 732 DEF_GCC_BUILTIN(BUILT_IN_PARITYL,
 733                 "__builtin_parityl",
 734                 BT_FN_INT_LONG,
 735                 ATTR_CONST_NOTHROW_LIST)
 736
 737 DEF_GCC_BUILTIN(BUILT_IN_PARITYLL,
 738                 "__builtin_parityll",
 739                 BT_FN_INT_LONGLONG,
 740                 ATTR_CONST_NOTHROW_LIST)
 741
 742 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNT,
 743                 "__builtin_popcount",
 744                 BT_FN_INT_INT,
 745                 ATTR_CONST_NOTHROW_LIST)
 746
 747 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTL,
 748                 "__builtin_popcountl",
 749                 BT_FN_INT_LONG,
 750                 ATTR_CONST_NOTHROW_LIST)
 751
 752 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTLL,
 753                 "__builtin_popcountll",
 754                 BT_FN_INT_LONGLONG,
 755                 ATTR_CONST_NOTHROW_LIST)
 756
 757 DEF_LIB_BUILTIN(BUILT_IN_POW,
 758                 "__builtin_pow",
 759                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 760                 flag_errno_math ? ATTR_NOTHROW_LIST
 761                                 : (flag_unsafe_math_optimizations
 762                                    ? ATTR_CONST_NOTHROW_LIST
 763                                    : ATTR_PURE_NOTHROW_LIST))
 764
 765 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWF,
 766                        "__builtin_powf",
 767                        BT_FN_FLOAT_FLOAT_FLOAT,
 768                        flag_errno_math ? ATTR_NOTHROW_LIST
 769                                        : (flag_unsafe_math_optimizations
 770                                           ? ATTR_CONST_NOTHROW_LIST
 771                                           : ATTR_PURE_NOTHROW_LIST))
 772
 773 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWL,
 774                        "__builtin_powl",
 775                        BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE,
 776                        flag_errno_math ? ATTR_NOTHROW_LIST
 777                                        : (flag_unsafe_math_optimizations
 778                                           ? ATTR_CONST_NOTHROW_LIST
 779                                           : ATTR_PURE_NOTHROW_LIST))
 780
 781 DEF_GCC_BUILTIN(BUILT_IN_PREFETCH,
 782                 "__builtin_prefetch",
 783                 BT_FN_VOID_CONST_PTR_VAR,
 784                 ATTR_NULL)
 785
 786 DEF_LIB_BUILTIN(BUILT_IN_PRINTF,
 787                 "__builtin_printf",
 788                 BT_FN_INT_CONST_STRING_VAR,
 789                 ATTR_FORMAT_PRINTF_1_2)
 790
 791 DEF_EXT_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
 792                     "__builtin_printf_unlocked",
 793                     BT_FN_INT_CONST_STRING_VAR,
 794                     ATTR_FORMAT_PRINTF_1_2)
 795
 796 DEF_LIB_BUILTIN(BUILT_IN_PUTCHAR,
 797                 "__builtin_putchar",
 798                 BT_FN_INT_INT,
 799                 ATTR_NOTHROW_LIST)
 800
 801 DEF_EXT_LIB_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
 802                     "__builtin_putchar_unlocked",
 803                     BT_FN_INT_INT,
 804                     ATTR_NOTHROW_LIST)
 805
 806 DEF_LIB_BUILTIN(BUILT_IN_PUTS,
 807                 "__builtin_puts",
 808                 BT_FN_INT_CONST_STRING,
 809                 ATTR_NOTHROW_NONNULL_1)
 810
 811 DEF_EXT_LIB_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
 812                     "__builtin_puts_unlocked",
 813                     BT_FN_INT_CONST_STRING,
 814                     ATTR_NOTHROW_NONNULL_1)
 815
 816 DEF_GCC_BUILTIN(BUILT_IN_RETURN,
 817                 "__builtin_return",
 818                 BT_FN_VOID_PTR,
 819                 ATTR_NORETURN_NOTHROW_LIST)
 820
 821 DEF_GCC_BUILTIN(BUILT_IN_RETURN_ADDRESS,
 822                 "__builtin_return_address",
 823                 BT_FN_PTR_UNSIGNED,
 824                 ATTR_NULL)
 825
 826 DEF_EXT_LIB_BUILTIN(BUILT_IN_RINDEX,
 827                     "__builtin_rindex",
 828                     BT_FN_STRING_CONST_STRING_INT,
 829                     ATTR_PURE_NOTHROW_NONNULL_1)
 830
 831 DEF_C99_BUILTIN(BUILT_IN_ROUND,
 832                 "__builtin_round",
 833                 BT_FN_DOUBLE_DOUBLE,
 834                 ATTR_CONST_NOTHROW_LIST)
 835
 836 DEF_C99_BUILTIN(BUILT_IN_ROUNDF,
 837                 "__builtin_roundf",
 838                 BT_FN_FLOAT_FLOAT,
 839                 ATTR_CONST_NOTHROW_LIST)
 840
 841 DEF_C99_BUILTIN(BUILT_IN_ROUNDL,
 842                 "__builtin_roundl",
 843                 BT_FN_LONGDOUBLE_LONGDOUBLE,
 844                 ATTR_CONST_NOTHROW_LIST)
 845
 846 DEF_GCC_BUILTIN(BUILT_IN_SAVEREGS,
 847                 "__builtin_saveregs",
 848                 BT_FN_PTR_VAR,
 849                 ATTR_NULL)
 850
 851 DEF_LIB_BUILTIN(BUILT_IN_SCANF,
 852                 "__builtin_scanf",
 853                 BT_FN_INT_CONST_STRING_VAR,
 854                 ATTR_FORMAT_SCANF_1_2)
 855
 856 DEF_GCC_BUILTIN(BUILT_IN_SETJMP,
 857                 "__builtin_setjmp",
 858                 BT_FN_INT_PTR,
 859                 ATTR_NULL)
 860
 861 DEF_LIB_BUILTIN(BUILT_IN_SIN,
 862                 "__builtin_sin",
 863                 BT_FN_DOUBLE_DOUBLE,
 864                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 865                                                : ATTR_PURE_NOTHROW_LIST)
 866
 867 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINF,
 868                        "__builtin_sinf",
 869                        BT_FN_FLOAT_FLOAT,
 870                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 871                                                       : ATTR_PURE_NOTHROW_LIST)
 872
 873 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINL,
 874                        "__builtin_sinl",
 875                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 876                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 877                                                       : ATTR_PURE_NOTHROW_LIST)
 878
 879 DEF_C99_BUILTIN(BUILT_IN_SNPRINTF,
 880                 "__builtin_snprintf",
 881                 BT_FN_INT_STRING_SIZE_CONST_STRING_VAR,
 882                 ATTR_FORMAT_PRINTF_3_4)
 883
 884 DEF_LIB_BUILTIN(BUILT_IN_SPRINTF,
 885                 "__builtin_sprintf",
 886                 BT_FN_INT_STRING_CONST_STRING_VAR,
 887                 ATTR_FORMAT_PRINTF_2_3)
 888
 889 DEF_LIB_BUILTIN(BUILT_IN_SSCANF,
 890                 "__builtin_sscanf",
 891                 BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
 892                 ATTR_FORMAT_SCANF_2_3)
 893
 894 DEF_GCC_BUILTIN(BUILT_IN_STDARG_START,          /* backward compat */
 895                 "__builtin_stdarg_start",
 896                 BT_FN_VOID_VALIST_REF_VAR,
 897                 ATTR_NULL)
 898
 899 DEF_EXT_LIB_BUILTIN(BUILT_IN_STPCPY,
 900                     "__builtin_stpcpy",
 901                     BT_FN_STRING_STRING_CONST_STRING,
 902                     ATTR_NOTHROW_NONNULL_1_2)
 903
 904 DEF_LIB_BUILTIN(BUILT_IN_STRCAT,
 905                 "__builtin_strcat",
 906                 BT_FN_STRING_STRING_CONST_STRING,
 907                 ATTR_NOTHROW_NONNULL_1_2)
 908
 909 DEF_LIB_BUILTIN(BUILT_IN_STRCHR,
 910                 "__builtin_strchr",
 911                 BT_FN_STRING_CONST_STRING_INT,
 912                 ATTR_PURE_NOTHROW_NONNULL_1)
 913
 914 DEF_LIB_BUILTIN(BUILT_IN_STRCMP,
 915                 "__builtin_strcmp",
 916                 BT_FN_INT_CONST_STRING_CONST_STRING,
 917                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 918
 919 DEF_LIB_BUILTIN(BUILT_IN_STRCPY,
 920                 "__builtin_strcpy",
 921                 BT_FN_STRING_STRING_CONST_STRING,
 922                 ATTR_NOTHROW_NONNULL_1_2)
 923
 924 DEF_LIB_BUILTIN(BUILT_IN_STRCSPN,
 925                 "__builtin_strcspn",
 926                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 927                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 928
 929 DEF_EXT_LIB_BUILTIN(BUILT_IN_STRDUP,
 930                     "__builtin_strdup",
 931                     BT_FN_STRING_CONST_STRING,
 932                     ATTR_MALLOC_NOTHROW_NONNULL_1)
 933
 934 DEF_LIB_BUILTIN(BUILT_IN_STRLEN,
 935                 "__builtin_strlen",
 936                 BT_FN_SIZE_CONST_STRING,
 937                 ATTR_PURE_NOTHROW_NONNULL_1)
 938
 939 DEF_LIB_BUILTIN(BUILT_IN_STRNCAT,
 940                 "__builtin_strncat",
 941                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 942                 ATTR_NOTHROW_NONNULL_1_2)
 943
 944 DEF_LIB_BUILTIN(BUILT_IN_STRNCMP,
 945                 "__builtin_strncmp",
 946                 BT_FN_INT_CONST_STRING_CONST_STRING_SIZE,
 947                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 948
 949 DEF_LIB_BUILTIN(BUILT_IN_STRNCPY,
 950                 "__builtin_strncpy",
 951                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 952                 ATTR_NOTHROW_NONNULL_1_2)
 953
 954 DEF_LIB_BUILTIN(BUILT_IN_STRPBRK,
 955                 "__builtin_strpbrk",
 956                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 957                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 958
 959 DEF_LIB_BUILTIN(BUILT_IN_STRRCHR,
 960                 "__builtin_strrchr",
 961                 BT_FN_STRING_CONST_STRING_INT,
 962                 ATTR_PURE_NOTHROW_NONNULL_1)
 963
 964 DEF_LIB_BUILTIN(BUILT_IN_STRSPN,
 965                 "__builtin_strspn",
 966                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 967                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 968
 969 DEF_LIB_BUILTIN(BUILT_IN_STRSTR,
 970                 "__builtin_strstr",
 971                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 972                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 973
 974 DEF_LIB_BUILTIN(BUILT_IN_SQRT,
 975                 "__builtin_sqrt",
 976                 BT_FN_DOUBLE_DOUBLE,
 977                 flag_errno_math ? ATTR_NOTHROW_LIST
 978                                 : (flag_unsafe_math_optimizations
 979                                    ? ATTR_CONST_NOTHROW_LIST
 980                                    : ATTR_PURE_NOTHROW_LIST))
 981
 982 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTF,
 983                        "__builtin_sqrtf",
 984                        BT_FN_FLOAT_FLOAT,
 985                        flag_errno_math ? ATTR_NOTHROW_LIST
 986                                        : (flag_unsafe_math_optimizations
 987                                           ? ATTR_CONST_NOTHROW_LIST
 988                                           : ATTR_PURE_NOTHROW_LIST))
 989
 990 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTL,
 991                        "__builtin_sqrtl",
 992                        BT_FN_LONGDOUBLE_LONGDOUBLE,
 993                        flag_errno_math ? ATTR_NOTHROW_LIST
 994                                        : (flag_unsafe_math_optimizations
 995                                           ? ATTR_CONST_NOTHROW_LIST
 996                                           : ATTR_PURE_NOTHROW_LIST))
 997
 998 DEF_LIB_BUILTIN(BUILT_IN_TAN,
 999                 "__builtin_tan",
1000                 BT_FN_DOUBLE_DOUBLE,
1001                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
1002                                                : ATTR_PURE_NOTHROW_LIST)
1003
1004 DEF_C99_C90RES_BUILTIN(BUILT_IN_TANF,
1005                        "__builtin_tanf",
1006                        BT_FN_FLOAT_FLOAT,
1007                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
1008                                                       : ATTR_PURE_NOTHROW_LIST)
1009
1010 DEF_C99_C90RES_BUILTIN(BUILT_IN_TANL,
1011                        "__builtin_tanl",
1012                        BT_FN_LONGDOUBLE_LONGDOUBLE,
1013                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
1014                                                       : ATTR_PURE_NOTHROW_LIST)
1015
1016 DEF_GCC_BUILTIN(BUILT_IN_TRAP,
1017                 "__builtin_trap",
1018                 BT_FN_VOID,
1019                 ATTR_NORETURN_NOTHROW_LIST)
1020
1021 DEF_C99_BUILTIN(BUILT_IN_TRUNC,
1022                 "__builtin_trunc",
1023                 BT_FN_DOUBLE_DOUBLE,
1024                 ATTR_CONST_NOTHROW_LIST)
1025
1026 DEF_C99_BUILTIN(BUILT_IN_TRUNCF,
1027                 "__builtin_truncf",
1028                 BT_FN_FLOAT_FLOAT,
1029                 ATTR_CONST_NOTHROW_LIST)
1030
1031 DEF_C99_BUILTIN(BUILT_IN_TRUNCL,
1032                 "__builtin_truncl",
1033                 BT_FN_LONGDOUBLE_LONGDOUBLE,
1034                 ATTR_CONST_NOTHROW_LIST)
1035
1036 DEF_GCC_BUILTIN(BUILT_IN_UNWIND_INIT,
1037                 "__builtin_unwind_init",
1038                 BT_FN_VOID,
1039                 ATTR_NULL)
1040
1041 DEF_GCC_BUILTIN(BUILT_IN_VA_COPY,
1042                 "__builtin_va_copy",
1043                 BT_FN_VOID_VALIST_REF_VALIST_ARG,
1044                 ATTR_NULL)
1045
1046 DEF_GCC_BUILTIN(BUILT_IN_VA_END,
1047                 "__builtin_va_end",
1048                 BT_FN_VOID_VALIST_REF,
1049                 ATTR_NULL)
1050
1051 DEF_GCC_BUILTIN(BUILT_IN_VA_START,
1052                 "__builtin_va_start",
1053                 BT_FN_VOID_VALIST_REF_VAR,
1054                 ATTR_NULL)
1055
1056 DEF_LIB_BUILTIN(BUILT_IN_VPRINTF,
1057                 "__builtin_vprintf",
1058                 BT_FN_INT_CONST_STRING_VALIST_ARG,
1059                 ATTR_FORMAT_PRINTF_1_0)
1060
1061 DEF_C99_BUILTIN(BUILT_IN_VSCANF,
1062                 "__builtin_vscanf",
1063                 BT_FN_INT_CONST_STRING_VALIST_ARG,
1064                 ATTR_FORMAT_SCANF_1_0)
1065
1066 DEF_C99_BUILTIN(BUILT_IN_VSNPRINTF,
1067                 "__builtin_vsnprintf",
1068                 BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
1069                 ATTR_FORMAT_PRINTF_3_0)
1070
1071 DEF_LIB_BUILTIN(BUILT_IN_VSPRINTF,
1072                 "__builtin_vsprintf",
1073                 BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
1074                 ATTR_FORMAT_PRINTF_2_0)
1075
1076 DEF_C99_BUILTIN(BUILT_IN_VSSCANF,
1077                 "__builtin_vsscanf",
1078                 BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
1079                 ATTR_FORMAT_SCANF_2_0)
1080