gcc/internal-fn.def

   1 /* Internal functions.
   2    Copyright (C) 2011-2019 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 /* This file specifies a list of internal "functions".  These functions
  21    differ from built-in functions in that they have no linkage and cannot
  22    be called directly by the user.  They represent operations that are only
  23    synthesised by GCC itself.
  24
  25    Internal functions are used instead of tree codes if the operation
  26    and its operands are more naturally represented as a GIMPLE_CALL
  27    than a GIMPLE_ASSIGN.
  28
  29    Each entry in this file has one of the forms:
  30
  31      DEF_INTERNAL_FN (NAME, FLAGS, FNSPEC)
  32      DEF_INTERNAL_OPTAB_FN (NAME, FLAGS, OPTAB, TYPE)
  33      DEF_INTERNAL_SIGNED_OPTAB_FN (NAME, FLAGS, SELECTOR, SIGNED_OPTAB,
  34                                    UNSIGNED_OPTAB, TYPE)
  35      DEF_INTERNAL_FLT_FN (NAME, FLAGS, OPTAB, TYPE)
  36      DEF_INTERNAL_INT_FN (NAME, FLAGS, OPTAB, TYPE)
  37
  38    where NAME is the name of the function, FLAGS is a set of
  39    ECF_* flags and FNSPEC is a string describing functions fnspec.
  40
  41    DEF_INTERNAL_OPTAB_FN defines an internal function that maps to a
  42    direct optab.  The function should only be called with a given
  43    set of types if the associated optab is available for the modes
  44    of those types.  OPTAB says what optab to use (without the trailing
  45    "_optab") and TYPE categorizes the optab based on its inputs and
  46    outputs.  The possible types of optab are:
  47
  48    - mask_load: currently just maskload
  49    - load_lanes: currently just vec_load_lanes
  50    - mask_load_lanes: currently just vec_mask_load_lanes
  51    - gather_load: used for {mask_,}gather_load
  52
  53    - mask_store: currently just maskstore
  54    - store_lanes: currently just vec_store_lanes
  55    - mask_store_lanes: currently just vec_mask_store_lanes
  56    - scatter_store: used for {mask_,}scatter_store
  57
  58    - unary: a normal unary optab, such as vec_reverse_<mode>
  59    - binary: a normal binary optab, such as vec_interleave_lo_<mode>
  60    - ternary: a normal ternary optab, such as fma<mode>4
  61
  62    - cond_binary: a conditional binary optab, such as cond_add<mode>
  63    - cond_ternary: a conditional ternary optab, such as cond_fma_rev<mode>
  64
  65    - fold_left: for scalar = FN (scalar, vector), keyed off the vector mode
  66
  67    DEF_INTERNAL_SIGNED_OPTAB_FN defines an internal function that
  68    maps to one of two optabs, depending on the signedness of an input.
  69    SIGNED_OPTAB and UNSIGNED_OPTAB are the optabs for signed and
  70    unsigned inputs respectively, both without the trailing "_optab".
  71    SELECTOR says which type in the tree_pair determines the signedness.
  72
  73    DEF_INTERNAL_FLT_FN is like DEF_INTERNAL_OPTAB_FN, but in addition,
  74    the function implements the computational part of a built-in math
  75    function BUILT_IN_<NAME>{F,,L}.  Unlike some built-in functions,
  76    these internal functions never set errno.
  77
  78    DEF_INTERNAL_INT_FN is like DEF_INTERNAL_OPTAB_FN, but in addition
  79    says that the function extends the C-level BUILT_IN_<NAME>{,L,LL,IMAX}
  80    group of functions to any integral mode (including vector modes).
  81
  82    Each entry must have a corresponding expander of the form:
  83
  84      void expand_NAME (gimple_call stmt)
  85
  86    where STMT is the statement that performs the call.  These are generated
  87    automatically for optab functions and call out to a function or macro
  88    called expand_<TYPE>_optab_fn.  */
  89
  90 #ifndef DEF_INTERNAL_FN
  91 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC)
  92 #endif
  93
  94 #ifndef DEF_INTERNAL_OPTAB_FN
  95 #define DEF_INTERNAL_OPTAB_FN(NAME, FLAGS, OPTAB, TYPE) \
  96   DEF_INTERNAL_FN (NAME, FLAGS | ECF_LEAF, NULL)
  97 #endif
  98
  99 #ifndef DEF_INTERNAL_SIGNED_OPTAB_FN
 100 #define DEF_INTERNAL_SIGNED_OPTAB_FN(NAME, FLAGS, SELECTOR, SIGNED_OPTAB, \
 101                                      UNSIGNED_OPTAB, TYPE) \
 102   DEF_INTERNAL_FN (NAME, FLAGS | ECF_LEAF, NULL)
 103 #endif
 104
 105 #ifndef DEF_INTERNAL_FLT_FN
 106 #define DEF_INTERNAL_FLT_FN(NAME, FLAGS, OPTAB, TYPE) \
 107   DEF_INTERNAL_OPTAB_FN (NAME, FLAGS, OPTAB, TYPE)
 108 #endif
 109
 110 #ifndef DEF_INTERNAL_FLT_FLOATN_FN
 111 #define DEF_INTERNAL_FLT_FLOATN_FN(NAME, FLAGS, OPTAB, TYPE) \
 112   DEF_INTERNAL_FLT_FN (NAME, FLAGS, OPTAB, TYPE)
 113 #endif
 114
 115 #ifndef DEF_INTERNAL_INT_FN
 116 #define DEF_INTERNAL_INT_FN(NAME, FLAGS, OPTAB, TYPE) \
 117   DEF_INTERNAL_OPTAB_FN (NAME, FLAGS, OPTAB, TYPE)
 118 #endif
 119
 120 DEF_INTERNAL_OPTAB_FN (MASK_LOAD, ECF_PURE, maskload, mask_load)
 121 DEF_INTERNAL_OPTAB_FN (LOAD_LANES, ECF_CONST, vec_load_lanes, load_lanes)
 122 DEF_INTERNAL_OPTAB_FN (MASK_LOAD_LANES, ECF_PURE,
 123                        vec_mask_load_lanes, mask_load_lanes)
 124
 125 DEF_INTERNAL_OPTAB_FN (GATHER_LOAD, ECF_PURE, gather_load, gather_load)
 126 DEF_INTERNAL_OPTAB_FN (MASK_GATHER_LOAD, ECF_PURE,
 127                        mask_gather_load, gather_load)
 128
 129 DEF_INTERNAL_OPTAB_FN (SCATTER_STORE, 0, scatter_store, scatter_store)
 130 DEF_INTERNAL_OPTAB_FN (MASK_SCATTER_STORE, 0,
 131                        mask_scatter_store, scatter_store)
 132
 133 DEF_INTERNAL_OPTAB_FN (MASK_STORE, 0, maskstore, mask_store)
 134 DEF_INTERNAL_OPTAB_FN (STORE_LANES, ECF_CONST, vec_store_lanes, store_lanes)
 135 DEF_INTERNAL_OPTAB_FN (MASK_STORE_LANES, 0,
 136                        vec_mask_store_lanes, mask_store_lanes)
 137
 138 DEF_INTERNAL_OPTAB_FN (WHILE_ULT, ECF_CONST | ECF_NOTHROW, while_ult, while)
 139
 140 DEF_INTERNAL_OPTAB_FN (VEC_SHL_INSERT, ECF_CONST | ECF_NOTHROW,
 141                        vec_shl_insert, binary)
 142
 143 DEF_INTERNAL_OPTAB_FN (DIV_POW2, ECF_CONST | ECF_NOTHROW, sdiv_pow2, binary)
 144
 145 DEF_INTERNAL_OPTAB_FN (FMS, ECF_CONST, fms, ternary)
 146 DEF_INTERNAL_OPTAB_FN (FNMA, ECF_CONST, fnma, ternary)
 147 DEF_INTERNAL_OPTAB_FN (FNMS, ECF_CONST, fnms, ternary)
 148
 149 DEF_INTERNAL_SIGNED_OPTAB_FN (AVG_FLOOR, ECF_CONST | ECF_NOTHROW, first,
 150                               savg_floor, uavg_floor, binary)
 151 DEF_INTERNAL_SIGNED_OPTAB_FN (AVG_CEIL, ECF_CONST | ECF_NOTHROW, first,
 152                               savg_ceil, uavg_ceil, binary)
 153
 154 DEF_INTERNAL_SIGNED_OPTAB_FN (MULHS, ECF_CONST | ECF_NOTHROW, first,
 155                               smulhs, umulhs, binary)
 156 DEF_INTERNAL_SIGNED_OPTAB_FN (MULHRS, ECF_CONST | ECF_NOTHROW, first,
 157                               smulhrs, umulhrs, binary)
 158
 159 DEF_INTERNAL_OPTAB_FN (COND_ADD, ECF_CONST, cond_add, cond_binary)
 160 DEF_INTERNAL_OPTAB_FN (COND_SUB, ECF_CONST, cond_sub, cond_binary)
 161 DEF_INTERNAL_OPTAB_FN (COND_MUL, ECF_CONST, cond_smul, cond_binary)
 162 DEF_INTERNAL_SIGNED_OPTAB_FN (COND_DIV, ECF_CONST, first,
 163                               cond_sdiv, cond_udiv, cond_binary)
 164 DEF_INTERNAL_SIGNED_OPTAB_FN (COND_MOD, ECF_CONST, first,
 165                               cond_smod, cond_umod, cond_binary)
 166 DEF_INTERNAL_OPTAB_FN (COND_RDIV, ECF_CONST, cond_sdiv, cond_binary)
 167 DEF_INTERNAL_SIGNED_OPTAB_FN (COND_MIN, ECF_CONST, first,
 168                               cond_smin, cond_umin, cond_binary)
 169 DEF_INTERNAL_SIGNED_OPTAB_FN (COND_MAX, ECF_CONST, first,
 170                               cond_smax, cond_umax, cond_binary)
 171 DEF_INTERNAL_OPTAB_FN (COND_AND, ECF_CONST | ECF_NOTHROW,
 172                        cond_and, cond_binary)
 173 DEF_INTERNAL_OPTAB_FN (COND_IOR, ECF_CONST | ECF_NOTHROW,
 174                        cond_ior, cond_binary)
 175 DEF_INTERNAL_OPTAB_FN (COND_XOR, ECF_CONST | ECF_NOTHROW,
 176                        cond_xor, cond_binary)
 177 DEF_INTERNAL_OPTAB_FN (COND_SHL, ECF_CONST | ECF_NOTHROW,
 178                        cond_ashl, cond_binary)
 179 DEF_INTERNAL_SIGNED_OPTAB_FN (COND_SHR, ECF_CONST | ECF_NOTHROW, first,
 180                               cond_ashr, cond_lshr, cond_binary)
 181
 182 DEF_INTERNAL_OPTAB_FN (COND_FMA, ECF_CONST, cond_fma, cond_ternary)
 183 DEF_INTERNAL_OPTAB_FN (COND_FMS, ECF_CONST, cond_fms, cond_ternary)
 184 DEF_INTERNAL_OPTAB_FN (COND_FNMA, ECF_CONST, cond_fnma, cond_ternary)
 185 DEF_INTERNAL_OPTAB_FN (COND_FNMS, ECF_CONST, cond_fnms, cond_ternary)
 186
 187 DEF_INTERNAL_OPTAB_FN (RSQRT, ECF_CONST, rsqrt, unary)
 188
 189 DEF_INTERNAL_OPTAB_FN (REDUC_PLUS, ECF_CONST | ECF_NOTHROW,
 190                        reduc_plus_scal, unary)
 191 DEF_INTERNAL_SIGNED_OPTAB_FN (REDUC_MAX, ECF_CONST | ECF_NOTHROW, first,
 192                               reduc_smax_scal, reduc_umax_scal, unary)
 193 DEF_INTERNAL_SIGNED_OPTAB_FN (REDUC_MIN, ECF_CONST | ECF_NOTHROW, first,
 194                               reduc_smin_scal, reduc_umin_scal, unary)
 195 DEF_INTERNAL_OPTAB_FN (REDUC_AND, ECF_CONST | ECF_NOTHROW,
 196                        reduc_and_scal, unary)
 197 DEF_INTERNAL_OPTAB_FN (REDUC_IOR, ECF_CONST | ECF_NOTHROW,
 198                        reduc_ior_scal, unary)
 199 DEF_INTERNAL_OPTAB_FN (REDUC_XOR, ECF_CONST | ECF_NOTHROW,
 200                        reduc_xor_scal, unary)
 201
 202 /* Extract the last active element from a vector.  */
 203 DEF_INTERNAL_OPTAB_FN (EXTRACT_LAST, ECF_CONST | ECF_NOTHROW,
 204                        extract_last, fold_left)
 205
 206 /* Same, but return the first argument if no elements are active.  */
 207 DEF_INTERNAL_OPTAB_FN (FOLD_EXTRACT_LAST, ECF_CONST | ECF_NOTHROW,
 208                        fold_extract_last, fold_extract)
 209
 210 DEF_INTERNAL_OPTAB_FN (FOLD_LEFT_PLUS, ECF_CONST | ECF_NOTHROW,
 211                        fold_left_plus, fold_left)
 212
 213 DEF_INTERNAL_OPTAB_FN (MASK_FOLD_LEFT_PLUS, ECF_CONST | ECF_NOTHROW,
 214                        mask_fold_left_plus, mask_fold_left)
 215
 216 /* Unary math functions.  */
 217 DEF_INTERNAL_FLT_FN (ACOS, ECF_CONST, acos, unary)
 218 DEF_INTERNAL_FLT_FN (ACOSH, ECF_CONST, acosh, unary)
 219 DEF_INTERNAL_FLT_FN (ASIN, ECF_CONST, asin, unary)
 220 DEF_INTERNAL_FLT_FN (ASINH, ECF_CONST, asinh, unary)
 221 DEF_INTERNAL_FLT_FN (ATAN, ECF_CONST, atan, unary)
 222 DEF_INTERNAL_FLT_FN (ATANH, ECF_CONST, atanh, unary)
 223 DEF_INTERNAL_FLT_FN (COS, ECF_CONST, cos, unary)
 224 DEF_INTERNAL_FLT_FN (COSH, ECF_CONST, cosh, unary)
 225 DEF_INTERNAL_FLT_FN (EXP, ECF_CONST, exp, unary)
 226 DEF_INTERNAL_FLT_FN (EXP10, ECF_CONST, exp10, unary)
 227 DEF_INTERNAL_FLT_FN (EXP2, ECF_CONST, exp2, unary)
 228 DEF_INTERNAL_FLT_FN (EXPM1, ECF_CONST, expm1, unary)
 229 DEF_INTERNAL_FLT_FN (LOG, ECF_CONST, log, unary)
 230 DEF_INTERNAL_FLT_FN (LOG10, ECF_CONST, log10, unary)
 231 DEF_INTERNAL_FLT_FN (LOG1P, ECF_CONST, log1p, unary)
 232 DEF_INTERNAL_FLT_FN (LOG2, ECF_CONST, log2, unary)
 233 DEF_INTERNAL_FLT_FN (LOGB, ECF_CONST, logb, unary)
 234 DEF_INTERNAL_FLT_FN (SIGNBIT, ECF_CONST, signbit, unary)
 235 DEF_INTERNAL_FLT_FN (SIGNIFICAND, ECF_CONST, significand, unary)
 236 DEF_INTERNAL_FLT_FN (SIN, ECF_CONST, sin, unary)
 237 DEF_INTERNAL_FLT_FN (SINH, ECF_CONST, sinh, unary)
 238 DEF_INTERNAL_FLT_FLOATN_FN (SQRT, ECF_CONST, sqrt, unary)
 239 DEF_INTERNAL_FLT_FN (TAN, ECF_CONST, tan, unary)
 240 DEF_INTERNAL_FLT_FN (TANH, ECF_CONST, tanh, unary)
 241
 242 /* FP rounding.  */
 243 DEF_INTERNAL_FLT_FLOATN_FN (CEIL, ECF_CONST, ceil, unary)
 244 DEF_INTERNAL_FLT_FLOATN_FN (FLOOR, ECF_CONST, floor, unary)
 245 DEF_INTERNAL_FLT_FLOATN_FN (NEARBYINT, ECF_CONST, nearbyint, unary)
 246 DEF_INTERNAL_FLT_FLOATN_FN (RINT, ECF_CONST, rint, unary)
 247 DEF_INTERNAL_FLT_FLOATN_FN (ROUND, ECF_CONST, round, unary)
 248 DEF_INTERNAL_FLT_FLOATN_FN (ROUNDEVEN, ECF_CONST, roundeven, unary)
 249 DEF_INTERNAL_FLT_FLOATN_FN (TRUNC, ECF_CONST, btrunc, unary)
 250
 251 /* Binary math functions.  */
 252 DEF_INTERNAL_FLT_FN (ATAN2, ECF_CONST, atan2, binary)
 253 DEF_INTERNAL_FLT_FLOATN_FN (COPYSIGN, ECF_CONST, copysign, binary)
 254 DEF_INTERNAL_FLT_FN (FMOD, ECF_CONST, fmod, binary)
 255 DEF_INTERNAL_FLT_FN (HYPOT, ECF_CONST, hypot, binary)
 256 DEF_INTERNAL_FLT_FN (POW, ECF_CONST, pow, binary)
 257 DEF_INTERNAL_FLT_FN (REMAINDER, ECF_CONST, remainder, binary)
 258 DEF_INTERNAL_FLT_FN (SCALB, ECF_CONST, scalb, binary)
 259 DEF_INTERNAL_FLT_FLOATN_FN (FMIN, ECF_CONST, fmin, binary)
 260 DEF_INTERNAL_FLT_FLOATN_FN (FMAX, ECF_CONST, fmax, binary)
 261 DEF_INTERNAL_OPTAB_FN (XORSIGN, ECF_CONST, xorsign, binary)
 262
 263 /* FP scales.  */
 264 DEF_INTERNAL_FLT_FN (LDEXP, ECF_CONST, ldexp, binary)
 265
 266 /* Ternary math functions.  */
 267 DEF_INTERNAL_FLT_FLOATN_FN (FMA, ECF_CONST, fma, ternary)
 268
 269 /* Unary integer ops.  */
 270 DEF_INTERNAL_INT_FN (CLRSB, ECF_CONST | ECF_NOTHROW, clrsb, unary)
 271 DEF_INTERNAL_INT_FN (CLZ, ECF_CONST | ECF_NOTHROW, clz, unary)
 272 DEF_INTERNAL_INT_FN (CTZ, ECF_CONST | ECF_NOTHROW, ctz, unary)
 273 DEF_INTERNAL_INT_FN (FFS, ECF_CONST | ECF_NOTHROW, ffs, unary)
 274 DEF_INTERNAL_INT_FN (PARITY, ECF_CONST | ECF_NOTHROW, parity, unary)
 275 DEF_INTERNAL_INT_FN (POPCOUNT, ECF_CONST | ECF_NOTHROW, popcount, unary)
 276
 277 DEF_INTERNAL_FN (GOMP_USE_SIMT, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 278 DEF_INTERNAL_FN (GOMP_SIMT_ENTER, ECF_LEAF | ECF_NOTHROW, NULL)
 279 DEF_INTERNAL_FN (GOMP_SIMT_ENTER_ALLOC, ECF_LEAF | ECF_NOTHROW, NULL)
 280 DEF_INTERNAL_FN (GOMP_SIMT_EXIT, ECF_LEAF | ECF_NOTHROW, NULL)
 281 DEF_INTERNAL_FN (GOMP_SIMT_LANE, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 282 DEF_INTERNAL_FN (GOMP_SIMT_VF, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 283 DEF_INTERNAL_FN (GOMP_SIMT_LAST_LANE, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 284 DEF_INTERNAL_FN (GOMP_SIMT_ORDERED_PRED, ECF_LEAF | ECF_NOTHROW, NULL)
 285 DEF_INTERNAL_FN (GOMP_SIMT_VOTE_ANY, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 286 DEF_INTERNAL_FN (GOMP_SIMT_XCHG_BFLY, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 287 DEF_INTERNAL_FN (GOMP_SIMT_XCHG_IDX, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 288 DEF_INTERNAL_FN (GOMP_SIMD_LANE, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 289 DEF_INTERNAL_FN (GOMP_SIMD_VF, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 290 DEF_INTERNAL_FN (GOMP_SIMD_LAST_LANE, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 291 DEF_INTERNAL_FN (GOMP_SIMD_ORDERED_START, ECF_LEAF | ECF_NOTHROW, NULL)
 292 DEF_INTERNAL_FN (GOMP_SIMD_ORDERED_END, ECF_LEAF | ECF_NOTHROW, NULL)
 293 DEF_INTERNAL_FN (LOOP_VECTORIZED, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 294 DEF_INTERNAL_FN (LOOP_DIST_ALIAS, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 295 DEF_INTERNAL_FN (ANNOTATE,  ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 296 DEF_INTERNAL_FN (UBSAN_NULL, ECF_LEAF | ECF_NOTHROW, ".R.")
 297 DEF_INTERNAL_FN (UBSAN_BOUNDS, ECF_LEAF | ECF_NOTHROW, NULL)
 298 DEF_INTERNAL_FN (UBSAN_VPTR, ECF_LEAF | ECF_NOTHROW, ".RR..")
 299 DEF_INTERNAL_FN (UBSAN_CHECK_ADD, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 300 DEF_INTERNAL_FN (UBSAN_CHECK_SUB, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 301 DEF_INTERNAL_FN (UBSAN_CHECK_MUL, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 302 DEF_INTERNAL_FN (UBSAN_PTR, ECF_LEAF | ECF_NOTHROW, ".R.")
 303 DEF_INTERNAL_FN (UBSAN_OBJECT_SIZE, ECF_LEAF | ECF_NOTHROW, NULL)
 304 DEF_INTERNAL_FN (ABNORMAL_DISPATCHER, ECF_NORETURN, NULL)
 305 DEF_INTERNAL_FN (BUILTIN_EXPECT, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 306 DEF_INTERNAL_FN (ASAN_CHECK, ECF_TM_PURE | ECF_LEAF | ECF_NOTHROW, "..R..")
 307 DEF_INTERNAL_FN (ASAN_MARK, ECF_LEAF | ECF_NOTHROW, NULL)
 308 DEF_INTERNAL_FN (ASAN_POISON, ECF_LEAF | ECF_NOTHROW | ECF_NOVOPS, NULL)
 309 DEF_INTERNAL_FN (ASAN_POISON_USE, ECF_LEAF | ECF_NOTHROW | ECF_NOVOPS, NULL)
 310 DEF_INTERNAL_FN (ADD_OVERFLOW, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 311 DEF_INTERNAL_FN (SUB_OVERFLOW, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 312 DEF_INTERNAL_FN (MUL_OVERFLOW, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 313 DEF_INTERNAL_FN (TSAN_FUNC_EXIT, ECF_NOVOPS | ECF_LEAF | ECF_NOTHROW, NULL)
 314 DEF_INTERNAL_FN (VA_ARG, ECF_NOTHROW | ECF_LEAF, NULL)
 315 DEF_INTERNAL_FN (VEC_CONVERT, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 316
 317 /* An unduplicable, uncombinable function.  Generally used to preserve
 318    a CFG property in the face of jump threading, tail merging or
 319    other such optimizations.  The first argument distinguishes
 320    between uses.  See internal-fn.h for usage.  */
 321 DEF_INTERNAL_FN (UNIQUE, ECF_NOTHROW, NULL)
 322 DEF_INTERNAL_FN (PHI, 0, NULL)
 323
 324 /* DIM_SIZE and DIM_POS return the size of a particular compute
 325    dimension and the executing thread's position within that
 326    dimension.  DIM_POS is pure (and not const) so that it isn't
 327    thought to clobber memory and can be gcse'd within a single
 328    parallel region, but not across FORK/JOIN boundaries.  They take a
 329    single INTEGER_CST argument.  This might be overly conservative.  */
 330 DEF_INTERNAL_FN (GOACC_DIM_SIZE, ECF_CONST | ECF_NOTHROW | ECF_LEAF, ".")
 331 DEF_INTERNAL_FN (GOACC_DIM_POS, ECF_PURE | ECF_NOTHROW | ECF_LEAF, ".")
 332
 333 /* OpenACC looping abstraction.  See internal-fn.h for usage.  */
 334 DEF_INTERNAL_FN (GOACC_LOOP, ECF_PURE | ECF_NOTHROW, NULL)
 335
 336 /* OpenACC reduction abstraction.  See internal-fn.h  for usage.  */
 337 DEF_INTERNAL_FN (GOACC_REDUCTION, ECF_NOTHROW | ECF_LEAF, NULL)
 338
 339 /* Openacc tile abstraction. Describes the spans of the element loop.
 340    GOACC_TILE (num-loops, loop-no, tile-arg, tile-mask, element-mask).  */
 341 DEF_INTERNAL_FN (GOACC_TILE, ECF_NOTHROW | ECF_LEAF, NULL)
 342
 343 /* Set errno to EDOM, if GCC knows how to do that directly for the
 344    current target.  */
 345 DEF_INTERNAL_FN (SET_EDOM, ECF_LEAF | ECF_NOTHROW, NULL)
 346
 347 /* Atomic functions.  These don't have ECF_NOTHROW because for
 348    -fnon-call-exceptions they can throw, otherwise we set
 349    gimple_call_nothrow_p on it.  */
 350 DEF_INTERNAL_FN (ATOMIC_BIT_TEST_AND_SET, ECF_LEAF, NULL)
 351 DEF_INTERNAL_FN (ATOMIC_BIT_TEST_AND_COMPLEMENT, ECF_LEAF, NULL)
 352 DEF_INTERNAL_FN (ATOMIC_BIT_TEST_AND_RESET, ECF_LEAF, NULL)
 353 DEF_INTERNAL_FN (ATOMIC_COMPARE_EXCHANGE, ECF_LEAF, NULL)
 354
 355 /* To implement [[fallthrough]].  */
 356 DEF_INTERNAL_FN (FALLTHROUGH, ECF_LEAF | ECF_NOTHROW, NULL)
 357
 358 /* To implement __builtin_launder.  */
 359 DEF_INTERNAL_FN (LAUNDER, ECF_LEAF | ECF_NOTHROW | ECF_NOVOPS, NULL)
 360
 361 /* Divmod function.  */
 362 DEF_INTERNAL_FN (DIVMOD, ECF_CONST | ECF_LEAF, NULL)
 363
 364 /* A NOP function with arbitrary arguments and return value.  */
 365 DEF_INTERNAL_FN (NOP, ECF_CONST | ECF_LEAF | ECF_NOTHROW, NULL)
 366
 367 #undef DEF_INTERNAL_INT_FN
 368 #undef DEF_INTERNAL_FLT_FN
 369 #undef DEF_INTERNAL_FLT_FLOATN_FN
 370 #undef DEF_INTERNAL_SIGNED_OPTAB_FN
 371 #undef DEF_INTERNAL_OPTAB_FN
 372 #undef DEF_INTERNAL_FN