1 //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the TargetLibraryInfo class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/Analysis/TargetLibraryInfo.h" 14 #include "llvm/ADT/DenseMap.h" 15 #include "llvm/ADT/SmallString.h" 16 #include "llvm/IR/Constants.h" 17 #include "llvm/IR/Module.h" 18 #include "llvm/InitializePasses.h" 19 #include "llvm/Support/CommandLine.h" 20 #include "llvm/TargetParser/Triple.h" 21 using namespace llvm; 22 23 static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary( 24 "vector-library", cl::Hidden, cl::desc("Vector functions library"), 25 cl::init(TargetLibraryInfoImpl::NoLibrary), 26 cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none", 27 "No vector functions library"), 28 clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate", 29 "Accelerate framework"), 30 clEnumValN(TargetLibraryInfoImpl::DarwinLibSystemM, 31 "Darwin_libsystem_m", "Darwin libsystem_m"), 32 clEnumValN(TargetLibraryInfoImpl::LIBMVEC_X86, "LIBMVEC-X86", 33 "GLIBC Vector Math library"), 34 clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV", 35 "IBM MASS vector library"), 36 clEnumValN(TargetLibraryInfoImpl::SVML, "SVML", 37 "Intel SVML library"), 38 clEnumValN(TargetLibraryInfoImpl::SLEEFGNUABI, "sleefgnuabi", 39 "SIMD Library for Evaluating Elementary Functions"), 40 clEnumValN(TargetLibraryInfoImpl::ArmPL, "ArmPL", 41 "Arm Performance Libraries"), 42 clEnumValN(TargetLibraryInfoImpl::AMDLIBM, "AMDLIBM", 43 "AMD vector math library"))); 44 45 StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = 46 { 47 #define TLI_DEFINE_STRING 48 #include "llvm/Analysis/TargetLibraryInfo.def" 49 }; 50 51 std::string VecDesc::getVectorFunctionABIVariantString() const { 52 assert(!VectorFnName.empty() && "Vector function name must not be empty."); 53 SmallString<256> Buffer; 54 llvm::raw_svector_ostream Out(Buffer); 55 Out << VABIPrefix << "_" << ScalarFnName << "(" << VectorFnName << ")"; 56 return std::string(Out.str()); 57 } 58 59 // Recognized types of library function arguments and return types. 60 enum FuncArgTypeID : char { 61 Void = 0, // Must be zero. 62 Bool, // 8 bits on all targets 63 Int16, 64 Int32, 65 Int, 66 IntPlus, // Int or bigger. 67 Long, // Either 32 or 64 bits. 68 IntX, // Any integer type. 69 Int64, 70 LLong, // 64 bits on all targets. 71 SizeT, // size_t. 72 SSizeT, // POSIX ssize_t. 73 Flt, // IEEE float. 74 Dbl, // IEEE double. 75 LDbl, // Any floating type (TODO: tighten this up). 76 Floating, // Any floating type. 77 Ptr, // Any pointer type. 78 Struct, // Any struct type. 79 Ellip, // The ellipsis (...). 80 Same, // Same argument type as the previous one. 81 }; 82 83 typedef std::array<FuncArgTypeID, 8> FuncProtoTy; 84 85 static const FuncProtoTy Signatures[] = { 86 #define TLI_DEFINE_SIG 87 #include "llvm/Analysis/TargetLibraryInfo.def" 88 }; 89 90 static_assert(sizeof Signatures / sizeof *Signatures == LibFunc::NumLibFuncs, 91 "Missing library function signatures"); 92 93 static bool hasSinCosPiStret(const Triple &T) { 94 // Only Darwin variants have _stret versions of combined trig functions. 95 if (!T.isOSDarwin()) 96 return false; 97 98 // The ABI is rather complicated on x86, so don't do anything special there. 99 if (T.getArch() == Triple::x86) 100 return false; 101 102 if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9)) 103 return false; 104 105 if (T.isiOS() && T.isOSVersionLT(7, 0)) 106 return false; 107 108 return true; 109 } 110 111 static bool hasBcmp(const Triple &TT) { 112 // Posix removed support from bcmp() in 2001, but the glibc and several 113 // implementations of the libc still have it. 114 if (TT.isOSLinux()) 115 return TT.isGNUEnvironment() || TT.isMusl(); 116 // Both NetBSD and OpenBSD are planning to remove the function. Windows does 117 // not have it. 118 return TT.isOSFreeBSD() || TT.isOSSolaris(); 119 } 120 121 static bool isCallingConvCCompatible(CallingConv::ID CC, StringRef TT, 122 FunctionType *FuncTy) { 123 switch (CC) { 124 default: 125 return false; 126 case llvm::CallingConv::C: 127 return true; 128 case llvm::CallingConv::ARM_APCS: 129 case llvm::CallingConv::ARM_AAPCS: 130 case llvm::CallingConv::ARM_AAPCS_VFP: { 131 132 // The iOS ABI diverges from the standard in some cases, so for now don't 133 // try to simplify those calls. 134 if (Triple(TT).isiOS()) 135 return false; 136 137 if (!FuncTy->getReturnType()->isPointerTy() && 138 !FuncTy->getReturnType()->isIntegerTy() && 139 !FuncTy->getReturnType()->isVoidTy()) 140 return false; 141 142 for (auto *Param : FuncTy->params()) { 143 if (!Param->isPointerTy() && !Param->isIntegerTy()) 144 return false; 145 } 146 return true; 147 } 148 } 149 return false; 150 } 151 152 bool TargetLibraryInfoImpl::isCallingConvCCompatible(CallBase *CI) { 153 return ::isCallingConvCCompatible(CI->getCallingConv(), 154 CI->getModule()->getTargetTriple(), 155 CI->getFunctionType()); 156 } 157 158 bool TargetLibraryInfoImpl::isCallingConvCCompatible(Function *F) { 159 return ::isCallingConvCCompatible(F->getCallingConv(), 160 F->getParent()->getTargetTriple(), 161 F->getFunctionType()); 162 } 163 164 static void initializeBase(TargetLibraryInfoImpl &TLI, const Triple &T) { 165 bool ShouldExtI32Param, ShouldExtI32Return; 166 bool ShouldSignExtI32Param, ShouldSignExtI32Return; 167 TargetLibraryInfo::initExtensionsForTriple( 168 ShouldExtI32Param, ShouldExtI32Return, ShouldSignExtI32Param, 169 ShouldSignExtI32Return, T); 170 TLI.setShouldExtI32Param(ShouldExtI32Param); 171 TLI.setShouldExtI32Return(ShouldExtI32Return); 172 TLI.setShouldSignExtI32Param(ShouldSignExtI32Param); 173 TLI.setShouldSignExtI32Return(ShouldSignExtI32Return); 174 175 // Let's assume by default that the size of int is 32 bits, unless the target 176 // is a 16-bit architecture because then it most likely is 16 bits. If that 177 // isn't true for a target those defaults should be overridden below. 178 TLI.setIntSize(T.isArch16Bit() ? 16 : 32); 179 } 180 181 /// Initialize the set of available library functions based on the specified 182 /// target triple. This should be carefully written so that a missing target 183 /// triple gets a sane set of defaults. 184 static void initializeLibCalls(TargetLibraryInfoImpl &TLI, const Triple &T, 185 ArrayRef<StringLiteral> StandardNames) { 186 // Set IO unlocked variants as unavailable 187 // Set them as available per system below 188 TLI.setUnavailable(LibFunc_getc_unlocked); 189 TLI.setUnavailable(LibFunc_getchar_unlocked); 190 TLI.setUnavailable(LibFunc_putc_unlocked); 191 TLI.setUnavailable(LibFunc_putchar_unlocked); 192 TLI.setUnavailable(LibFunc_fputc_unlocked); 193 TLI.setUnavailable(LibFunc_fgetc_unlocked); 194 TLI.setUnavailable(LibFunc_fread_unlocked); 195 TLI.setUnavailable(LibFunc_fwrite_unlocked); 196 TLI.setUnavailable(LibFunc_fputs_unlocked); 197 TLI.setUnavailable(LibFunc_fgets_unlocked); 198 199 // There is really no runtime library on AMDGPU, apart from 200 // __kmpc_alloc/free_shared. 201 if (T.isAMDGPU()) { 202 TLI.disableAllFunctions(); 203 TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared); 204 TLI.setAvailable(llvm::LibFunc___kmpc_free_shared); 205 return; 206 } 207 208 // memset_pattern{4,8,16} is only available on iOS 3.0 and Mac OS X 10.5 and 209 // later. All versions of watchOS support it. 210 if (T.isMacOSX()) { 211 // available IO unlocked variants on Mac OS X 212 TLI.setAvailable(LibFunc_getc_unlocked); 213 TLI.setAvailable(LibFunc_getchar_unlocked); 214 TLI.setAvailable(LibFunc_putc_unlocked); 215 TLI.setAvailable(LibFunc_putchar_unlocked); 216 TLI.setUnavailable(LibFunc_memrchr); 217 218 if (T.isMacOSXVersionLT(10, 5)) { 219 TLI.setUnavailable(LibFunc_memset_pattern4); 220 TLI.setUnavailable(LibFunc_memset_pattern8); 221 TLI.setUnavailable(LibFunc_memset_pattern16); 222 } 223 } else if (T.isiOS()) { 224 if (T.isOSVersionLT(3, 0)) { 225 TLI.setUnavailable(LibFunc_memset_pattern4); 226 TLI.setUnavailable(LibFunc_memset_pattern8); 227 TLI.setUnavailable(LibFunc_memset_pattern16); 228 } 229 } else if (!T.isWatchOS()) { 230 TLI.setUnavailable(LibFunc_memset_pattern4); 231 TLI.setUnavailable(LibFunc_memset_pattern8); 232 TLI.setUnavailable(LibFunc_memset_pattern16); 233 } 234 235 if (!hasSinCosPiStret(T)) { 236 TLI.setUnavailable(LibFunc_sinpi); 237 TLI.setUnavailable(LibFunc_sinpif); 238 TLI.setUnavailable(LibFunc_cospi); 239 TLI.setUnavailable(LibFunc_cospif); 240 TLI.setUnavailable(LibFunc_sincospi_stret); 241 TLI.setUnavailable(LibFunc_sincospif_stret); 242 } 243 244 if (!hasBcmp(T)) 245 TLI.setUnavailable(LibFunc_bcmp); 246 247 if (T.isMacOSX() && T.getArch() == Triple::x86 && 248 !T.isMacOSXVersionLT(10, 7)) { 249 // x86-32 OSX has a scheme where fwrite and fputs (and some other functions 250 // we don't care about) have two versions; on recent OSX, the one we want 251 // has a $UNIX2003 suffix. The two implementations are identical except 252 // for the return value in some edge cases. However, we don't want to 253 // generate code that depends on the old symbols. 254 TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003"); 255 TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003"); 256 } 257 258 // iprintf and friends are only available on XCore, TCE, and Emscripten. 259 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce && 260 T.getOS() != Triple::Emscripten) { 261 TLI.setUnavailable(LibFunc_iprintf); 262 TLI.setUnavailable(LibFunc_siprintf); 263 TLI.setUnavailable(LibFunc_fiprintf); 264 } 265 266 // __small_printf and friends are only available on Emscripten. 267 if (T.getOS() != Triple::Emscripten) { 268 TLI.setUnavailable(LibFunc_small_printf); 269 TLI.setUnavailable(LibFunc_small_sprintf); 270 TLI.setUnavailable(LibFunc_small_fprintf); 271 } 272 273 if (T.isOSWindows() && !T.isOSCygMing()) { 274 // XXX: The earliest documentation available at the moment is for VS2015/VC19: 275 // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015 276 // XXX: In order to use an MSVCRT older than VC19, 277 // the specific library version must be explicit in the target triple, 278 // e.g., x86_64-pc-windows-msvc18. 279 bool hasPartialC99 = true; 280 if (T.isKnownWindowsMSVCEnvironment()) { 281 VersionTuple Version = T.getEnvironmentVersion(); 282 hasPartialC99 = (Version.getMajor() == 0 || Version.getMajor() >= 19); 283 } 284 285 // Latest targets support C89 math functions, in part. 286 bool isARM = (T.getArch() == Triple::aarch64 || 287 T.getArch() == Triple::arm); 288 bool hasPartialFloat = (isARM || 289 T.getArch() == Triple::x86_64); 290 291 // Win32 does not support float C89 math functions, in general. 292 if (!hasPartialFloat) { 293 TLI.setUnavailable(LibFunc_acosf); 294 TLI.setUnavailable(LibFunc_asinf); 295 TLI.setUnavailable(LibFunc_atan2f); 296 TLI.setUnavailable(LibFunc_atanf); 297 TLI.setUnavailable(LibFunc_ceilf); 298 TLI.setUnavailable(LibFunc_cosf); 299 TLI.setUnavailable(LibFunc_coshf); 300 TLI.setUnavailable(LibFunc_expf); 301 TLI.setUnavailable(LibFunc_floorf); 302 TLI.setUnavailable(LibFunc_fmodf); 303 TLI.setUnavailable(LibFunc_log10f); 304 TLI.setUnavailable(LibFunc_logf); 305 TLI.setUnavailable(LibFunc_modff); 306 TLI.setUnavailable(LibFunc_powf); 307 TLI.setUnavailable(LibFunc_remainderf); 308 TLI.setUnavailable(LibFunc_remquof); 309 TLI.setUnavailable(LibFunc_fdimf); 310 TLI.setUnavailable(LibFunc_sinf); 311 TLI.setUnavailable(LibFunc_sinhf); 312 TLI.setUnavailable(LibFunc_sqrtf); 313 TLI.setUnavailable(LibFunc_tanf); 314 TLI.setUnavailable(LibFunc_tanhf); 315 } 316 if (!isARM) 317 TLI.setUnavailable(LibFunc_fabsf); 318 TLI.setUnavailable(LibFunc_frexpf); 319 TLI.setUnavailable(LibFunc_ldexpf); 320 321 // Win32 does not support long double C89 math functions. 322 TLI.setUnavailable(LibFunc_acosl); 323 TLI.setUnavailable(LibFunc_asinl); 324 TLI.setUnavailable(LibFunc_atan2l); 325 TLI.setUnavailable(LibFunc_atanl); 326 TLI.setUnavailable(LibFunc_ceill); 327 TLI.setUnavailable(LibFunc_cosl); 328 TLI.setUnavailable(LibFunc_coshl); 329 TLI.setUnavailable(LibFunc_expl); 330 TLI.setUnavailable(LibFunc_fabsl); 331 TLI.setUnavailable(LibFunc_floorl); 332 TLI.setUnavailable(LibFunc_fmodl); 333 TLI.setUnavailable(LibFunc_frexpl); 334 TLI.setUnavailable(LibFunc_ldexpl); 335 TLI.setUnavailable(LibFunc_log10l); 336 TLI.setUnavailable(LibFunc_logl); 337 TLI.setUnavailable(LibFunc_modfl); 338 TLI.setUnavailable(LibFunc_powl); 339 TLI.setUnavailable(LibFunc_remainderl); 340 TLI.setUnavailable(LibFunc_remquol); 341 TLI.setUnavailable(LibFunc_fdiml); 342 TLI.setUnavailable(LibFunc_sinl); 343 TLI.setUnavailable(LibFunc_sinhl); 344 TLI.setUnavailable(LibFunc_sqrtl); 345 TLI.setUnavailable(LibFunc_tanl); 346 TLI.setUnavailable(LibFunc_tanhl); 347 348 // Win32 does not fully support C99 math functions. 349 if (!hasPartialC99) { 350 TLI.setUnavailable(LibFunc_acosh); 351 TLI.setUnavailable(LibFunc_acoshf); 352 TLI.setUnavailable(LibFunc_asinh); 353 TLI.setUnavailable(LibFunc_asinhf); 354 TLI.setUnavailable(LibFunc_atanh); 355 TLI.setUnavailable(LibFunc_atanhf); 356 TLI.setAvailableWithName(LibFunc_cabs, "_cabs"); 357 TLI.setUnavailable(LibFunc_cabsf); 358 TLI.setUnavailable(LibFunc_cbrt); 359 TLI.setUnavailable(LibFunc_cbrtf); 360 TLI.setAvailableWithName(LibFunc_copysign, "_copysign"); 361 TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf"); 362 TLI.setUnavailable(LibFunc_exp2); 363 TLI.setUnavailable(LibFunc_exp2f); 364 TLI.setUnavailable(LibFunc_expm1); 365 TLI.setUnavailable(LibFunc_expm1f); 366 TLI.setUnavailable(LibFunc_fmax); 367 TLI.setUnavailable(LibFunc_fmaxf); 368 TLI.setUnavailable(LibFunc_fmin); 369 TLI.setUnavailable(LibFunc_fminf); 370 TLI.setUnavailable(LibFunc_log1p); 371 TLI.setUnavailable(LibFunc_log1pf); 372 TLI.setUnavailable(LibFunc_log2); 373 TLI.setUnavailable(LibFunc_log2f); 374 TLI.setAvailableWithName(LibFunc_logb, "_logb"); 375 TLI.setUnavailable(LibFunc_ilogb); 376 TLI.setUnavailable(LibFunc_ilogbf); 377 if (hasPartialFloat) 378 TLI.setAvailableWithName(LibFunc_logbf, "_logbf"); 379 else 380 TLI.setUnavailable(LibFunc_logbf); 381 TLI.setUnavailable(LibFunc_rint); 382 TLI.setUnavailable(LibFunc_rintf); 383 TLI.setUnavailable(LibFunc_round); 384 TLI.setUnavailable(LibFunc_roundf); 385 TLI.setUnavailable(LibFunc_scalbln); 386 TLI.setUnavailable(LibFunc_scalblnf); 387 TLI.setUnavailable(LibFunc_scalblnl); 388 TLI.setUnavailable(LibFunc_scalbn); 389 TLI.setUnavailable(LibFunc_scalbnf); 390 TLI.setUnavailable(LibFunc_scalbnl); 391 TLI.setUnavailable(LibFunc_trunc); 392 TLI.setUnavailable(LibFunc_truncf); 393 } 394 395 // Win32 does not support long double C99 math functions. 396 TLI.setUnavailable(LibFunc_acoshl); 397 TLI.setUnavailable(LibFunc_asinhl); 398 TLI.setUnavailable(LibFunc_atanhl); 399 TLI.setUnavailable(LibFunc_cabsl); 400 TLI.setUnavailable(LibFunc_cbrtl); 401 TLI.setUnavailable(LibFunc_copysignl); 402 TLI.setUnavailable(LibFunc_exp2l); 403 TLI.setUnavailable(LibFunc_expm1l); 404 TLI.setUnavailable(LibFunc_fmaxl); 405 TLI.setUnavailable(LibFunc_fminl); 406 TLI.setUnavailable(LibFunc_log1pl); 407 TLI.setUnavailable(LibFunc_log2l); 408 TLI.setUnavailable(LibFunc_logbl); 409 TLI.setUnavailable(LibFunc_ilogbl); 410 TLI.setUnavailable(LibFunc_nearbyintl); 411 TLI.setUnavailable(LibFunc_rintl); 412 TLI.setUnavailable(LibFunc_roundl); 413 TLI.setUnavailable(LibFunc_scalblnl); 414 TLI.setUnavailable(LibFunc_scalbnl); 415 TLI.setUnavailable(LibFunc_truncl); 416 417 // Win32 does not support these functions, but 418 // they are generally available on POSIX-compliant systems. 419 TLI.setUnavailable(LibFunc_access); 420 TLI.setUnavailable(LibFunc_chmod); 421 TLI.setUnavailable(LibFunc_closedir); 422 TLI.setUnavailable(LibFunc_fdopen); 423 TLI.setUnavailable(LibFunc_fileno); 424 TLI.setUnavailable(LibFunc_fseeko); 425 TLI.setUnavailable(LibFunc_fstat); 426 TLI.setUnavailable(LibFunc_ftello); 427 TLI.setUnavailable(LibFunc_gettimeofday); 428 TLI.setUnavailable(LibFunc_memccpy); 429 TLI.setUnavailable(LibFunc_mkdir); 430 TLI.setUnavailable(LibFunc_open); 431 TLI.setUnavailable(LibFunc_opendir); 432 TLI.setUnavailable(LibFunc_pclose); 433 TLI.setUnavailable(LibFunc_popen); 434 TLI.setUnavailable(LibFunc_read); 435 TLI.setUnavailable(LibFunc_rmdir); 436 TLI.setUnavailable(LibFunc_stat); 437 TLI.setUnavailable(LibFunc_strcasecmp); 438 TLI.setUnavailable(LibFunc_strncasecmp); 439 TLI.setUnavailable(LibFunc_unlink); 440 TLI.setUnavailable(LibFunc_utime); 441 TLI.setUnavailable(LibFunc_write); 442 } 443 444 if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) { 445 // These functions aren't available in either MSVC or MinGW environments. 446 TLI.setUnavailable(LibFunc_bcmp); 447 TLI.setUnavailable(LibFunc_bcopy); 448 TLI.setUnavailable(LibFunc_bzero); 449 TLI.setUnavailable(LibFunc_chown); 450 TLI.setUnavailable(LibFunc_ctermid); 451 TLI.setUnavailable(LibFunc_ffs); 452 TLI.setUnavailable(LibFunc_flockfile); 453 TLI.setUnavailable(LibFunc_fstatvfs); 454 TLI.setUnavailable(LibFunc_ftrylockfile); 455 TLI.setUnavailable(LibFunc_funlockfile); 456 TLI.setUnavailable(LibFunc_getitimer); 457 TLI.setUnavailable(LibFunc_getlogin_r); 458 TLI.setUnavailable(LibFunc_getpwnam); 459 TLI.setUnavailable(LibFunc_htonl); 460 TLI.setUnavailable(LibFunc_htons); 461 TLI.setUnavailable(LibFunc_lchown); 462 TLI.setUnavailable(LibFunc_lstat); 463 TLI.setUnavailable(LibFunc_memrchr); 464 TLI.setUnavailable(LibFunc_ntohl); 465 TLI.setUnavailable(LibFunc_ntohs); 466 TLI.setUnavailable(LibFunc_pread); 467 TLI.setUnavailable(LibFunc_pwrite); 468 TLI.setUnavailable(LibFunc_readlink); 469 TLI.setUnavailable(LibFunc_realpath); 470 TLI.setUnavailable(LibFunc_setitimer); 471 TLI.setUnavailable(LibFunc_statvfs); 472 TLI.setUnavailable(LibFunc_stpcpy); 473 TLI.setUnavailable(LibFunc_stpncpy); 474 TLI.setUnavailable(LibFunc_times); 475 TLI.setUnavailable(LibFunc_uname); 476 TLI.setUnavailable(LibFunc_unsetenv); 477 TLI.setUnavailable(LibFunc_utimes); 478 479 // MinGW does have ldexpf, but it is a plain wrapper over regular ldexp. 480 // Therefore it's not beneficial to transform code to use it, i.e. 481 // just pretend that the function is not available. 482 TLI.setUnavailable(LibFunc_ldexpf); 483 } 484 485 // Pick just one set of new/delete variants. 486 if (T.isOSMSVCRT()) { 487 // MSVC, doesn't have the Itanium new/delete. 488 TLI.setUnavailable(LibFunc_ZdaPv); 489 TLI.setUnavailable(LibFunc_ZdaPvRKSt9nothrow_t); 490 TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_t); 491 TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t); 492 TLI.setUnavailable(LibFunc_ZdaPvj); 493 TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t); 494 TLI.setUnavailable(LibFunc_ZdaPvm); 495 TLI.setUnavailable(LibFunc_ZdaPvmSt11align_val_t); 496 TLI.setUnavailable(LibFunc_ZdlPv); 497 TLI.setUnavailable(LibFunc_ZdlPvRKSt9nothrow_t); 498 TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_t); 499 TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t); 500 TLI.setUnavailable(LibFunc_ZdlPvj); 501 TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t); 502 TLI.setUnavailable(LibFunc_ZdlPvm); 503 TLI.setUnavailable(LibFunc_ZdlPvmSt11align_val_t); 504 TLI.setUnavailable(LibFunc_Znaj); 505 TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t); 506 TLI.setUnavailable(LibFunc_ZnajSt11align_val_t); 507 TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t); 508 TLI.setUnavailable(LibFunc_Znam); 509 TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t); 510 TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t12__hot_cold_t); 511 TLI.setUnavailable(LibFunc_ZnamSt11align_val_t); 512 TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t); 513 TLI.setUnavailable(LibFunc_Znwj); 514 TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t); 515 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t); 516 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t); 517 TLI.setUnavailable(LibFunc_Znwm); 518 TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t); 519 TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t12__hot_cold_t); 520 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t); 521 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t); 522 TLI.setUnavailable(LibFunc_Znwm12__hot_cold_t); 523 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t12__hot_cold_t); 524 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t12__hot_cold_t); 525 TLI.setUnavailable(LibFunc_Znam12__hot_cold_t); 526 TLI.setUnavailable(LibFunc_ZnamSt11align_val_t12__hot_cold_t); 527 TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t12__hot_cold_t); 528 TLI.setUnavailable(LibFunc_size_returning_new); 529 TLI.setUnavailable(LibFunc_size_returning_new_hot_cold); 530 TLI.setUnavailable(LibFunc_size_returning_new_aligned); 531 TLI.setUnavailable(LibFunc_size_returning_new_aligned_hot_cold); 532 } else { 533 // Not MSVC, assume it's Itanium. 534 TLI.setUnavailable(LibFunc_msvc_new_int); 535 TLI.setUnavailable(LibFunc_msvc_new_int_nothrow); 536 TLI.setUnavailable(LibFunc_msvc_new_longlong); 537 TLI.setUnavailable(LibFunc_msvc_new_longlong_nothrow); 538 TLI.setUnavailable(LibFunc_msvc_delete_ptr32); 539 TLI.setUnavailable(LibFunc_msvc_delete_ptr32_nothrow); 540 TLI.setUnavailable(LibFunc_msvc_delete_ptr32_int); 541 TLI.setUnavailable(LibFunc_msvc_delete_ptr64); 542 TLI.setUnavailable(LibFunc_msvc_delete_ptr64_nothrow); 543 TLI.setUnavailable(LibFunc_msvc_delete_ptr64_longlong); 544 TLI.setUnavailable(LibFunc_msvc_new_array_int); 545 TLI.setUnavailable(LibFunc_msvc_new_array_int_nothrow); 546 TLI.setUnavailable(LibFunc_msvc_new_array_longlong); 547 TLI.setUnavailable(LibFunc_msvc_new_array_longlong_nothrow); 548 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32); 549 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_nothrow); 550 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_int); 551 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64); 552 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_nothrow); 553 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_longlong); 554 } 555 556 switch (T.getOS()) { 557 case Triple::MacOSX: 558 // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0 559 // and their names are __exp10 and __exp10f. exp10l is not available on 560 // OS X or iOS. 561 TLI.setUnavailable(LibFunc_exp10l); 562 if (T.isMacOSXVersionLT(10, 9)) { 563 TLI.setUnavailable(LibFunc_exp10); 564 TLI.setUnavailable(LibFunc_exp10f); 565 } else { 566 TLI.setAvailableWithName(LibFunc_exp10, "__exp10"); 567 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f"); 568 } 569 break; 570 case Triple::IOS: 571 case Triple::TvOS: 572 case Triple::WatchOS: 573 case Triple::XROS: 574 TLI.setUnavailable(LibFunc_exp10l); 575 if (!T.isWatchOS() && 576 (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) { 577 TLI.setUnavailable(LibFunc_exp10); 578 TLI.setUnavailable(LibFunc_exp10f); 579 } else { 580 TLI.setAvailableWithName(LibFunc_exp10, "__exp10"); 581 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f"); 582 } 583 break; 584 case Triple::Linux: 585 // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely 586 // buggy prior to glibc version 2.18. Until this version is widely deployed 587 // or we have a reasonable detection strategy, we cannot use exp10 reliably 588 // on Linux. 589 // 590 // Fall through to disable all of them. 591 [[fallthrough]]; 592 default: 593 TLI.setUnavailable(LibFunc_exp10); 594 TLI.setUnavailable(LibFunc_exp10f); 595 TLI.setUnavailable(LibFunc_exp10l); 596 } 597 598 // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and 599 // Linux (GLIBC): 600 // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html 601 // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c 602 // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html 603 switch (T.getOS()) { 604 case Triple::Darwin: 605 case Triple::MacOSX: 606 case Triple::IOS: 607 case Triple::TvOS: 608 case Triple::WatchOS: 609 case Triple::XROS: 610 case Triple::FreeBSD: 611 case Triple::Linux: 612 break; 613 default: 614 TLI.setUnavailable(LibFunc_ffsl); 615 } 616 617 // ffsll is available on at least FreeBSD and Linux (GLIBC): 618 // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c 619 // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html 620 switch (T.getOS()) { 621 case Triple::Darwin: 622 case Triple::MacOSX: 623 case Triple::IOS: 624 case Triple::TvOS: 625 case Triple::WatchOS: 626 case Triple::XROS: 627 case Triple::FreeBSD: 628 case Triple::Linux: 629 break; 630 default: 631 TLI.setUnavailable(LibFunc_ffsll); 632 } 633 634 // The following functions are available on at least FreeBSD: 635 // http://svn.freebsd.org/base/head/lib/libc/string/fls.c 636 // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c 637 // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c 638 if (!T.isOSFreeBSD()) { 639 TLI.setUnavailable(LibFunc_fls); 640 TLI.setUnavailable(LibFunc_flsl); 641 TLI.setUnavailable(LibFunc_flsll); 642 } 643 644 // The following functions are only available on GNU/Linux (using glibc). 645 // Linux variants without glibc (eg: bionic, musl) may have some subset. 646 if (!T.isOSLinux() || !T.isGNUEnvironment()) { 647 TLI.setUnavailable(LibFunc_dunder_strdup); 648 TLI.setUnavailable(LibFunc_dunder_strtok_r); 649 TLI.setUnavailable(LibFunc_dunder_isoc99_scanf); 650 TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf); 651 TLI.setUnavailable(LibFunc_under_IO_getc); 652 TLI.setUnavailable(LibFunc_under_IO_putc); 653 // But, Android and musl have memalign. 654 if (!T.isAndroid() && !T.isMusl()) 655 TLI.setUnavailable(LibFunc_memalign); 656 TLI.setUnavailable(LibFunc_fopen64); 657 TLI.setUnavailable(LibFunc_fseeko64); 658 TLI.setUnavailable(LibFunc_fstat64); 659 TLI.setUnavailable(LibFunc_fstatvfs64); 660 TLI.setUnavailable(LibFunc_ftello64); 661 TLI.setUnavailable(LibFunc_lstat64); 662 TLI.setUnavailable(LibFunc_open64); 663 TLI.setUnavailable(LibFunc_stat64); 664 TLI.setUnavailable(LibFunc_statvfs64); 665 TLI.setUnavailable(LibFunc_tmpfile64); 666 667 // Relaxed math functions are included in math-finite.h on Linux (GLIBC). 668 // Note that math-finite.h is no longer supported by top-of-tree GLIBC, 669 // so we keep these functions around just so that they're recognized by 670 // the ConstantFolder. 671 TLI.setUnavailable(LibFunc_acos_finite); 672 TLI.setUnavailable(LibFunc_acosf_finite); 673 TLI.setUnavailable(LibFunc_acosl_finite); 674 TLI.setUnavailable(LibFunc_acosh_finite); 675 TLI.setUnavailable(LibFunc_acoshf_finite); 676 TLI.setUnavailable(LibFunc_acoshl_finite); 677 TLI.setUnavailable(LibFunc_asin_finite); 678 TLI.setUnavailable(LibFunc_asinf_finite); 679 TLI.setUnavailable(LibFunc_asinl_finite); 680 TLI.setUnavailable(LibFunc_atan2_finite); 681 TLI.setUnavailable(LibFunc_atan2f_finite); 682 TLI.setUnavailable(LibFunc_atan2l_finite); 683 TLI.setUnavailable(LibFunc_atanh_finite); 684 TLI.setUnavailable(LibFunc_atanhf_finite); 685 TLI.setUnavailable(LibFunc_atanhl_finite); 686 TLI.setUnavailable(LibFunc_cosh_finite); 687 TLI.setUnavailable(LibFunc_coshf_finite); 688 TLI.setUnavailable(LibFunc_coshl_finite); 689 TLI.setUnavailable(LibFunc_exp10_finite); 690 TLI.setUnavailable(LibFunc_exp10f_finite); 691 TLI.setUnavailable(LibFunc_exp10l_finite); 692 TLI.setUnavailable(LibFunc_exp2_finite); 693 TLI.setUnavailable(LibFunc_exp2f_finite); 694 TLI.setUnavailable(LibFunc_exp2l_finite); 695 TLI.setUnavailable(LibFunc_exp_finite); 696 TLI.setUnavailable(LibFunc_expf_finite); 697 TLI.setUnavailable(LibFunc_expl_finite); 698 TLI.setUnavailable(LibFunc_log10_finite); 699 TLI.setUnavailable(LibFunc_log10f_finite); 700 TLI.setUnavailable(LibFunc_log10l_finite); 701 TLI.setUnavailable(LibFunc_log2_finite); 702 TLI.setUnavailable(LibFunc_log2f_finite); 703 TLI.setUnavailable(LibFunc_log2l_finite); 704 TLI.setUnavailable(LibFunc_log_finite); 705 TLI.setUnavailable(LibFunc_logf_finite); 706 TLI.setUnavailable(LibFunc_logl_finite); 707 TLI.setUnavailable(LibFunc_pow_finite); 708 TLI.setUnavailable(LibFunc_powf_finite); 709 TLI.setUnavailable(LibFunc_powl_finite); 710 TLI.setUnavailable(LibFunc_sinh_finite); 711 TLI.setUnavailable(LibFunc_sinhf_finite); 712 TLI.setUnavailable(LibFunc_sinhl_finite); 713 TLI.setUnavailable(LibFunc_sqrt_finite); 714 TLI.setUnavailable(LibFunc_sqrtf_finite); 715 TLI.setUnavailable(LibFunc_sqrtl_finite); 716 } 717 718 if ((T.isOSLinux() && T.isGNUEnvironment()) || 719 (T.isAndroid() && !T.isAndroidVersionLT(28))) { 720 // available IO unlocked variants on GNU/Linux and Android P or later 721 TLI.setAvailable(LibFunc_getc_unlocked); 722 TLI.setAvailable(LibFunc_getchar_unlocked); 723 TLI.setAvailable(LibFunc_putc_unlocked); 724 TLI.setAvailable(LibFunc_putchar_unlocked); 725 TLI.setAvailable(LibFunc_fputc_unlocked); 726 TLI.setAvailable(LibFunc_fgetc_unlocked); 727 TLI.setAvailable(LibFunc_fread_unlocked); 728 TLI.setAvailable(LibFunc_fwrite_unlocked); 729 TLI.setAvailable(LibFunc_fputs_unlocked); 730 TLI.setAvailable(LibFunc_fgets_unlocked); 731 } 732 733 if (T.isAndroid() && T.isAndroidVersionLT(21)) { 734 TLI.setUnavailable(LibFunc_stpcpy); 735 TLI.setUnavailable(LibFunc_stpncpy); 736 } 737 738 if (T.isPS()) { 739 // PS4/PS5 do have memalign. 740 TLI.setAvailable(LibFunc_memalign); 741 742 // PS4/PS5 do not have new/delete with "unsigned int" size parameter; 743 // they only have the "unsigned long" versions. 744 TLI.setUnavailable(LibFunc_ZdaPvj); 745 TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t); 746 TLI.setUnavailable(LibFunc_ZdlPvj); 747 TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t); 748 TLI.setUnavailable(LibFunc_Znaj); 749 TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t); 750 TLI.setUnavailable(LibFunc_ZnajSt11align_val_t); 751 TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t); 752 TLI.setUnavailable(LibFunc_Znwj); 753 TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t); 754 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t); 755 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t); 756 757 // None of the *_chk functions. 758 TLI.setUnavailable(LibFunc_memccpy_chk); 759 TLI.setUnavailable(LibFunc_memcpy_chk); 760 TLI.setUnavailable(LibFunc_memmove_chk); 761 TLI.setUnavailable(LibFunc_mempcpy_chk); 762 TLI.setUnavailable(LibFunc_memset_chk); 763 TLI.setUnavailable(LibFunc_snprintf_chk); 764 TLI.setUnavailable(LibFunc_sprintf_chk); 765 TLI.setUnavailable(LibFunc_stpcpy_chk); 766 TLI.setUnavailable(LibFunc_stpncpy_chk); 767 TLI.setUnavailable(LibFunc_strcat_chk); 768 TLI.setUnavailable(LibFunc_strcpy_chk); 769 TLI.setUnavailable(LibFunc_strlcat_chk); 770 TLI.setUnavailable(LibFunc_strlcpy_chk); 771 TLI.setUnavailable(LibFunc_strlen_chk); 772 TLI.setUnavailable(LibFunc_strncat_chk); 773 TLI.setUnavailable(LibFunc_strncpy_chk); 774 TLI.setUnavailable(LibFunc_vsnprintf_chk); 775 TLI.setUnavailable(LibFunc_vsprintf_chk); 776 777 // Various Posix system functions. 778 TLI.setUnavailable(LibFunc_access); 779 TLI.setUnavailable(LibFunc_chmod); 780 TLI.setUnavailable(LibFunc_chown); 781 TLI.setUnavailable(LibFunc_closedir); 782 TLI.setUnavailable(LibFunc_ctermid); 783 TLI.setUnavailable(LibFunc_execl); 784 TLI.setUnavailable(LibFunc_execle); 785 TLI.setUnavailable(LibFunc_execlp); 786 TLI.setUnavailable(LibFunc_execv); 787 TLI.setUnavailable(LibFunc_execvP); 788 TLI.setUnavailable(LibFunc_execve); 789 TLI.setUnavailable(LibFunc_execvp); 790 TLI.setUnavailable(LibFunc_execvpe); 791 TLI.setUnavailable(LibFunc_fork); 792 TLI.setUnavailable(LibFunc_fstat); 793 TLI.setUnavailable(LibFunc_fstatvfs); 794 TLI.setUnavailable(LibFunc_getenv); 795 TLI.setUnavailable(LibFunc_getitimer); 796 TLI.setUnavailable(LibFunc_getlogin_r); 797 TLI.setUnavailable(LibFunc_getpwnam); 798 TLI.setUnavailable(LibFunc_gettimeofday); 799 TLI.setUnavailable(LibFunc_lchown); 800 TLI.setUnavailable(LibFunc_lstat); 801 TLI.setUnavailable(LibFunc_mkdir); 802 TLI.setUnavailable(LibFunc_open); 803 TLI.setUnavailable(LibFunc_opendir); 804 TLI.setUnavailable(LibFunc_pclose); 805 TLI.setUnavailable(LibFunc_popen); 806 TLI.setUnavailable(LibFunc_pread); 807 TLI.setUnavailable(LibFunc_pwrite); 808 TLI.setUnavailable(LibFunc_read); 809 TLI.setUnavailable(LibFunc_readlink); 810 TLI.setUnavailable(LibFunc_realpath); 811 TLI.setUnavailable(LibFunc_rename); 812 TLI.setUnavailable(LibFunc_rmdir); 813 TLI.setUnavailable(LibFunc_setitimer); 814 TLI.setUnavailable(LibFunc_stat); 815 TLI.setUnavailable(LibFunc_statvfs); 816 TLI.setUnavailable(LibFunc_system); 817 TLI.setUnavailable(LibFunc_times); 818 TLI.setUnavailable(LibFunc_tmpfile); 819 TLI.setUnavailable(LibFunc_unlink); 820 TLI.setUnavailable(LibFunc_uname); 821 TLI.setUnavailable(LibFunc_unsetenv); 822 TLI.setUnavailable(LibFunc_utime); 823 TLI.setUnavailable(LibFunc_utimes); 824 TLI.setUnavailable(LibFunc_valloc); 825 TLI.setUnavailable(LibFunc_write); 826 827 // Miscellaneous other functions not provided. 828 TLI.setUnavailable(LibFunc_atomic_load); 829 TLI.setUnavailable(LibFunc_atomic_store); 830 TLI.setUnavailable(LibFunc___kmpc_alloc_shared); 831 TLI.setUnavailable(LibFunc___kmpc_free_shared); 832 TLI.setUnavailable(LibFunc_dunder_strndup); 833 TLI.setUnavailable(LibFunc_bcmp); 834 TLI.setUnavailable(LibFunc_bcopy); 835 TLI.setUnavailable(LibFunc_bzero); 836 TLI.setUnavailable(LibFunc_cabs); 837 TLI.setUnavailable(LibFunc_cabsf); 838 TLI.setUnavailable(LibFunc_cabsl); 839 TLI.setUnavailable(LibFunc_ffs); 840 TLI.setUnavailable(LibFunc_flockfile); 841 TLI.setUnavailable(LibFunc_fseeko); 842 TLI.setUnavailable(LibFunc_ftello); 843 TLI.setUnavailable(LibFunc_ftrylockfile); 844 TLI.setUnavailable(LibFunc_funlockfile); 845 TLI.setUnavailable(LibFunc_htonl); 846 TLI.setUnavailable(LibFunc_htons); 847 TLI.setUnavailable(LibFunc_isascii); 848 TLI.setUnavailable(LibFunc_memccpy); 849 TLI.setUnavailable(LibFunc_mempcpy); 850 TLI.setUnavailable(LibFunc_memrchr); 851 TLI.setUnavailable(LibFunc_ntohl); 852 TLI.setUnavailable(LibFunc_ntohs); 853 TLI.setUnavailable(LibFunc_reallocf); 854 TLI.setUnavailable(LibFunc_roundeven); 855 TLI.setUnavailable(LibFunc_roundevenf); 856 TLI.setUnavailable(LibFunc_roundevenl); 857 TLI.setUnavailable(LibFunc_stpcpy); 858 TLI.setUnavailable(LibFunc_stpncpy); 859 TLI.setUnavailable(LibFunc_strlcat); 860 TLI.setUnavailable(LibFunc_strlcpy); 861 TLI.setUnavailable(LibFunc_strndup); 862 TLI.setUnavailable(LibFunc_strnlen); 863 TLI.setUnavailable(LibFunc_toascii); 864 } 865 866 // As currently implemented in clang, NVPTX code has no standard library to 867 // speak of. Headers provide a standard-ish library implementation, but many 868 // of the signatures are wrong -- for example, many libm functions are not 869 // extern "C". 870 // 871 // libdevice, an IR library provided by nvidia, is linked in by the front-end, 872 // but only used functions are provided to llvm. Moreover, most of the 873 // functions in libdevice don't map precisely to standard library functions. 874 // 875 // FIXME: Having no standard library prevents e.g. many fastmath 876 // optimizations, so this situation should be fixed. 877 if (T.isNVPTX()) { 878 TLI.disableAllFunctions(); 879 TLI.setAvailable(LibFunc_nvvm_reflect); 880 TLI.setAvailable(llvm::LibFunc_malloc); 881 TLI.setAvailable(llvm::LibFunc_free); 882 883 // TODO: We could enable the following two according to [0] but we haven't 884 // done an evaluation wrt. the performance implications. 885 // [0] 886 // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations 887 // 888 // TLI.setAvailable(llvm::LibFunc_memcpy); 889 // TLI.setAvailable(llvm::LibFunc_memset); 890 891 TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared); 892 TLI.setAvailable(llvm::LibFunc___kmpc_free_shared); 893 } else { 894 TLI.setUnavailable(LibFunc_nvvm_reflect); 895 } 896 897 // These vec_malloc/free routines are only available on AIX. 898 if (!T.isOSAIX()) { 899 TLI.setUnavailable(LibFunc_vec_calloc); 900 TLI.setUnavailable(LibFunc_vec_malloc); 901 TLI.setUnavailable(LibFunc_vec_realloc); 902 TLI.setUnavailable(LibFunc_vec_free); 903 } 904 905 if (T.isOSAIX()) 906 TLI.setUnavailable(LibFunc_memrchr); 907 908 TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary, T); 909 } 910 911 /// Initialize the set of available library functions based on the specified 912 /// target triple. This should be carefully written so that a missing target 913 /// triple gets a sane set of defaults. 914 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T, 915 ArrayRef<StringLiteral> StandardNames) { 916 initializeBase(TLI, T); 917 initializeLibCalls(TLI, T, StandardNames); 918 } 919 920 TargetLibraryInfoImpl::TargetLibraryInfoImpl() { 921 // Default to nothing being available. 922 memset(AvailableArray, 0, sizeof(AvailableArray)); 923 initializeBase(*this, Triple()); 924 } 925 926 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) { 927 // Default to everything being available. 928 memset(AvailableArray, -1, sizeof(AvailableArray)); 929 930 initialize(*this, T, StandardNames); 931 } 932 933 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI) 934 : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param), 935 ShouldExtI32Return(TLI.ShouldExtI32Return), 936 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param), 937 ShouldSignExtI32Return(TLI.ShouldSignExtI32Return), 938 SizeOfInt(TLI.SizeOfInt) { 939 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray)); 940 VectorDescs = TLI.VectorDescs; 941 ScalarDescs = TLI.ScalarDescs; 942 } 943 944 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI) 945 : CustomNames(std::move(TLI.CustomNames)), 946 ShouldExtI32Param(TLI.ShouldExtI32Param), 947 ShouldExtI32Return(TLI.ShouldExtI32Return), 948 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param), 949 ShouldSignExtI32Return(TLI.ShouldSignExtI32Return), 950 SizeOfInt(TLI.SizeOfInt) { 951 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray), 952 AvailableArray); 953 VectorDescs = TLI.VectorDescs; 954 ScalarDescs = TLI.ScalarDescs; 955 } 956 957 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) { 958 CustomNames = TLI.CustomNames; 959 ShouldExtI32Param = TLI.ShouldExtI32Param; 960 ShouldExtI32Return = TLI.ShouldExtI32Return; 961 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param; 962 ShouldSignExtI32Return = TLI.ShouldSignExtI32Return; 963 SizeOfInt = TLI.SizeOfInt; 964 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray)); 965 return *this; 966 } 967 968 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) { 969 CustomNames = std::move(TLI.CustomNames); 970 ShouldExtI32Param = TLI.ShouldExtI32Param; 971 ShouldExtI32Return = TLI.ShouldExtI32Return; 972 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param; 973 ShouldSignExtI32Return = TLI.ShouldSignExtI32Return; 974 SizeOfInt = TLI.SizeOfInt; 975 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray), 976 AvailableArray); 977 return *this; 978 } 979 980 static StringRef sanitizeFunctionName(StringRef funcName) { 981 // Filter out empty names and names containing null bytes, those can't be in 982 // our table. 983 if (funcName.empty() || funcName.contains('\0')) 984 return StringRef(); 985 986 // Check for \01 prefix that is used to mangle __asm declarations and 987 // strip it if present. 988 return GlobalValue::dropLLVMManglingEscape(funcName); 989 } 990 991 static DenseMap<StringRef, LibFunc> 992 buildIndexMap(ArrayRef<StringLiteral> StandardNames) { 993 DenseMap<StringRef, LibFunc> Indices; 994 unsigned Idx = 0; 995 Indices.reserve(LibFunc::NumLibFuncs); 996 for (const auto &Func : StandardNames) 997 Indices[Func] = static_cast<LibFunc>(Idx++); 998 return Indices; 999 } 1000 1001 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const { 1002 funcName = sanitizeFunctionName(funcName); 1003 if (funcName.empty()) 1004 return false; 1005 1006 static const DenseMap<StringRef, LibFunc> Indices = 1007 buildIndexMap(StandardNames); 1008 1009 if (auto Loc = Indices.find(funcName); Loc != Indices.end()) { 1010 F = Loc->second; 1011 return true; 1012 } 1013 return false; 1014 } 1015 1016 // Return true if ArgTy matches Ty. 1017 1018 static bool matchType(FuncArgTypeID ArgTy, const Type *Ty, unsigned IntBits, 1019 unsigned SizeTBits) { 1020 switch (ArgTy) { 1021 case Void: 1022 return Ty->isVoidTy(); 1023 case Bool: 1024 return Ty->isIntegerTy(8); 1025 case Int16: 1026 return Ty->isIntegerTy(16); 1027 case Int32: 1028 return Ty->isIntegerTy(32); 1029 case Int: 1030 return Ty->isIntegerTy(IntBits); 1031 case IntPlus: 1032 return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits; 1033 case IntX: 1034 return Ty->isIntegerTy(); 1035 case Long: 1036 // TODO: Figure out and use long size. 1037 return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits; 1038 case Int64: 1039 return Ty->isIntegerTy(64); 1040 case LLong: 1041 return Ty->isIntegerTy(64); 1042 case SizeT: 1043 case SSizeT: 1044 return Ty->isIntegerTy(SizeTBits); 1045 case Flt: 1046 return Ty->isFloatTy(); 1047 case Dbl: 1048 return Ty->isDoubleTy(); 1049 // TODO: Tighten this up. 1050 case LDbl: 1051 return Ty->isFloatingPointTy(); 1052 case Floating: 1053 return Ty->isFloatingPointTy(); 1054 case Ptr: 1055 return Ty->isPointerTy(); 1056 case Struct: 1057 return Ty->isStructTy(); 1058 default: 1059 break; 1060 } 1061 1062 llvm_unreachable("Invalid type"); 1063 } 1064 1065 static bool isValidProtoForSizeReturningNew(const FunctionType &FTy, LibFunc F, 1066 const Module &M, 1067 int SizeTSizeBits) { 1068 switch (F) { 1069 case LibFunc_size_returning_new: { 1070 if (FTy.getNumParams() != 1 || 1071 !FTy.getParamType(0)->isIntegerTy(SizeTSizeBits)) { 1072 return false; 1073 } 1074 } break; 1075 case LibFunc_size_returning_new_hot_cold: { 1076 if (FTy.getNumParams() != 2 || 1077 !FTy.getParamType(0)->isIntegerTy(SizeTSizeBits) || 1078 !FTy.getParamType(1)->isIntegerTy(8)) { 1079 return false; 1080 } 1081 } break; 1082 case LibFunc_size_returning_new_aligned: { 1083 if (FTy.getNumParams() != 2 || 1084 !FTy.getParamType(0)->isIntegerTy(SizeTSizeBits) || 1085 !FTy.getParamType(1)->isIntegerTy(SizeTSizeBits)) { 1086 return false; 1087 } 1088 } break; 1089 case LibFunc_size_returning_new_aligned_hot_cold: 1090 if (FTy.getNumParams() != 3 || 1091 !FTy.getParamType(0)->isIntegerTy(SizeTSizeBits) || 1092 !FTy.getParamType(1)->isIntegerTy(SizeTSizeBits) || 1093 !FTy.getParamType(2)->isIntegerTy(8)) { 1094 return false; 1095 } 1096 break; 1097 default: 1098 return false; 1099 } 1100 1101 auto &Context = M.getContext(); 1102 PointerType *PtrTy = PointerType::get(Context, 0); 1103 StructType *SizedPtrTy = StructType::get( 1104 Context, {PtrTy, Type::getIntNTy(Context, SizeTSizeBits)}); 1105 return FTy.getReturnType() == SizedPtrTy; 1106 } 1107 1108 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy, 1109 LibFunc F, 1110 const Module &M) const { 1111 unsigned NumParams = FTy.getNumParams(); 1112 1113 switch (F) { 1114 // Special handling for <complex.h> functions: 1115 case LibFunc_cabs: 1116 case LibFunc_cabsf: 1117 case LibFunc_cabsl: { 1118 Type *RetTy = FTy.getReturnType(); 1119 if (!RetTy->isFloatingPointTy()) 1120 return false; 1121 1122 Type *ParamTy = FTy.getParamType(0); 1123 // NOTE: These prototypes are target specific and currently support 1124 // "complex" passed as an array or discrete real & imaginary parameters. 1125 // Add other calling conventions to enable libcall optimizations. 1126 if (NumParams == 1) 1127 return (ParamTy->isArrayTy() && ParamTy->getArrayNumElements() == 2 && 1128 ParamTy->getArrayElementType() == RetTy); 1129 else if (NumParams == 2) 1130 return ParamTy == RetTy && FTy.getParamType(1) == RetTy; 1131 1132 return false; 1133 } 1134 // Special handling for the sincospi functions that return either 1135 // a struct or vector: 1136 case LibFunc_sincospi_stret: 1137 case LibFunc_sincospif_stret: { 1138 if (NumParams != 1) 1139 return false; 1140 1141 Type *RetTy = FTy.getReturnType(); 1142 Type *ParamTy = FTy.getParamType(0); 1143 if (auto *Ty = dyn_cast<StructType>(RetTy)) { 1144 if (Ty->getNumElements() != 2) 1145 return false; 1146 return (Ty->getElementType(0) == ParamTy && 1147 Ty->getElementType(1) == ParamTy); 1148 } 1149 1150 if (auto *Ty = dyn_cast<FixedVectorType>(RetTy)) { 1151 if (Ty->getNumElements() != 2) 1152 return false; 1153 return Ty->getElementType() == ParamTy; 1154 } 1155 1156 return false; 1157 } 1158 // Special handling of __size_returning_new functions that return a struct 1159 // of type {void*, size_t}. 1160 case LibFunc_size_returning_new: 1161 case LibFunc_size_returning_new_hot_cold: 1162 case LibFunc_size_returning_new_aligned: 1163 case LibFunc_size_returning_new_aligned_hot_cold: 1164 return isValidProtoForSizeReturningNew(FTy, F, M, getSizeTSize(M)); 1165 default: 1166 break; 1167 } 1168 1169 unsigned IntBits = getIntSize(); 1170 unsigned SizeTBits = getSizeTSize(M); 1171 unsigned Idx = 0; 1172 1173 // Iterate over the type ids in the function prototype, matching each 1174 // against the function's type FTy, starting with its return type. 1175 // Return true if both match in number and kind, inclduing the ellipsis. 1176 Type *Ty = FTy.getReturnType(), *LastTy = Ty; 1177 const auto &ProtoTypes = Signatures[F]; 1178 for (auto TyID : ProtoTypes) { 1179 if (Idx && TyID == Void) 1180 // Except in the first position where it designates the function's 1181 // return type Void ends the argument list. 1182 break; 1183 1184 if (TyID == Ellip) { 1185 // The ellipsis ends the protoype list but is not a part of FTy's 1186 // argument list. Except when it's last it must be followed by 1187 // Void. 1188 assert(Idx == ProtoTypes.size() - 1 || ProtoTypes[Idx + 1] == Void); 1189 return FTy.isFunctionVarArg(); 1190 } 1191 1192 if (TyID == Same) { 1193 assert(Idx != 0 && "Type ID 'Same' must not be first!"); 1194 if (Ty != LastTy) 1195 return false; 1196 } else { 1197 if (!Ty || !matchType(TyID, Ty, IntBits, SizeTBits)) 1198 return false; 1199 LastTy = Ty; 1200 } 1201 1202 if (Idx == NumParams) { 1203 // There's at least one and at most two more type ids than there are 1204 // arguments in FTy's argument list. 1205 Ty = nullptr; 1206 ++Idx; 1207 continue; 1208 } 1209 1210 Ty = FTy.getParamType(Idx++); 1211 } 1212 1213 // Return success only if all entries on both lists have been processed 1214 // and the function is not a variadic one. 1215 return Idx == NumParams + 1 && !FTy.isFunctionVarArg(); 1216 } 1217 1218 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl, 1219 LibFunc &F) const { 1220 // Intrinsics don't overlap w/libcalls; if our module has a large number of 1221 // intrinsics, this ends up being an interesting compile time win since we 1222 // avoid string normalization and comparison. 1223 if (FDecl.isIntrinsic()) return false; 1224 1225 const Module *M = FDecl.getParent(); 1226 assert(M && "Expecting FDecl to be connected to a Module."); 1227 1228 if (FDecl.LibFuncCache == Function::UnknownLibFunc) 1229 if (!getLibFunc(FDecl.getName(), FDecl.LibFuncCache)) 1230 FDecl.LibFuncCache = NotLibFunc; 1231 1232 if (FDecl.LibFuncCache == NotLibFunc) 1233 return false; 1234 1235 F = FDecl.LibFuncCache; 1236 return isValidProtoForLibFunc(*FDecl.getFunctionType(), F, *M); 1237 } 1238 1239 bool TargetLibraryInfoImpl::getLibFunc(unsigned int Opcode, Type *Ty, 1240 LibFunc &F) const { 1241 // Must be a frem instruction with float or double arguments. 1242 if (Opcode != Instruction::FRem || (!Ty->isDoubleTy() && !Ty->isFloatTy())) 1243 return false; 1244 1245 F = Ty->isDoubleTy() ? LibFunc_fmod : LibFunc_fmodf; 1246 return true; 1247 } 1248 1249 void TargetLibraryInfoImpl::disableAllFunctions() { 1250 memset(AvailableArray, 0, sizeof(AvailableArray)); 1251 } 1252 1253 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) { 1254 return LHS.getScalarFnName() < RHS.getScalarFnName(); 1255 } 1256 1257 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) { 1258 return LHS.getVectorFnName() < RHS.getVectorFnName(); 1259 } 1260 1261 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) { 1262 return LHS.getScalarFnName() < S; 1263 } 1264 1265 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) { 1266 llvm::append_range(VectorDescs, Fns); 1267 llvm::sort(VectorDescs, compareByScalarFnName); 1268 1269 llvm::append_range(ScalarDescs, Fns); 1270 llvm::sort(ScalarDescs, compareByVectorFnName); 1271 } 1272 1273 static const VecDesc VecFuncs_Accelerate[] = { 1274 #define TLI_DEFINE_ACCELERATE_VECFUNCS 1275 #include "llvm/Analysis/VecFuncs.def" 1276 #undef TLI_DEFINE_ACCELERATE_VECFUNCS 1277 }; 1278 1279 static const VecDesc VecFuncs_DarwinLibSystemM[] = { 1280 #define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS 1281 #include "llvm/Analysis/VecFuncs.def" 1282 #undef TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS 1283 }; 1284 1285 static const VecDesc VecFuncs_LIBMVEC_X86[] = { 1286 #define TLI_DEFINE_LIBMVEC_X86_VECFUNCS 1287 #include "llvm/Analysis/VecFuncs.def" 1288 #undef TLI_DEFINE_LIBMVEC_X86_VECFUNCS 1289 }; 1290 1291 static const VecDesc VecFuncs_MASSV[] = { 1292 #define TLI_DEFINE_MASSV_VECFUNCS 1293 #include "llvm/Analysis/VecFuncs.def" 1294 #undef TLI_DEFINE_MASSV_VECFUNCS 1295 }; 1296 1297 static const VecDesc VecFuncs_SVML[] = { 1298 #define TLI_DEFINE_SVML_VECFUNCS 1299 #include "llvm/Analysis/VecFuncs.def" 1300 #undef TLI_DEFINE_SVML_VECFUNCS 1301 }; 1302 1303 static const VecDesc VecFuncs_SLEEFGNUABI_VF2[] = { 1304 #define TLI_DEFINE_SLEEFGNUABI_VF2_VECFUNCS 1305 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, VABI_PREFIX) \ 1306 {SCAL, VEC, VF, /* MASK = */ false, VABI_PREFIX}, 1307 #include "llvm/Analysis/VecFuncs.def" 1308 #undef TLI_DEFINE_SLEEFGNUABI_VF2_VECFUNCS 1309 }; 1310 static const VecDesc VecFuncs_SLEEFGNUABI_VF4[] = { 1311 #define TLI_DEFINE_SLEEFGNUABI_VF4_VECFUNCS 1312 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, VABI_PREFIX) \ 1313 {SCAL, VEC, VF, /* MASK = */ false, VABI_PREFIX}, 1314 #include "llvm/Analysis/VecFuncs.def" 1315 #undef TLI_DEFINE_SLEEFGNUABI_VF4_VECFUNCS 1316 }; 1317 static const VecDesc VecFuncs_SLEEFGNUABI_VFScalable[] = { 1318 #define TLI_DEFINE_SLEEFGNUABI_SCALABLE_VECFUNCS 1319 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \ 1320 {SCAL, VEC, VF, MASK, VABI_PREFIX}, 1321 #include "llvm/Analysis/VecFuncs.def" 1322 #undef TLI_DEFINE_SLEEFGNUABI_SCALABLE_VECFUNCS 1323 }; 1324 1325 static const VecDesc VecFuncs_ArmPL[] = { 1326 #define TLI_DEFINE_ARMPL_VECFUNCS 1327 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \ 1328 {SCAL, VEC, VF, MASK, VABI_PREFIX}, 1329 #include "llvm/Analysis/VecFuncs.def" 1330 #undef TLI_DEFINE_ARMPL_VECFUNCS 1331 }; 1332 1333 const VecDesc VecFuncs_AMDLIBM[] = { 1334 #define TLI_DEFINE_AMDLIBM_VECFUNCS 1335 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \ 1336 {SCAL, VEC, VF, MASK, VABI_PREFIX}, 1337 #include "llvm/Analysis/VecFuncs.def" 1338 #undef TLI_DEFINE_AMDLIBM_VECFUNCS 1339 }; 1340 1341 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib( 1342 enum VectorLibrary VecLib, const llvm::Triple &TargetTriple) { 1343 switch (VecLib) { 1344 case Accelerate: { 1345 addVectorizableFunctions(VecFuncs_Accelerate); 1346 break; 1347 } 1348 case DarwinLibSystemM: { 1349 addVectorizableFunctions(VecFuncs_DarwinLibSystemM); 1350 break; 1351 } 1352 case LIBMVEC_X86: { 1353 addVectorizableFunctions(VecFuncs_LIBMVEC_X86); 1354 break; 1355 } 1356 case MASSV: { 1357 addVectorizableFunctions(VecFuncs_MASSV); 1358 break; 1359 } 1360 case SVML: { 1361 addVectorizableFunctions(VecFuncs_SVML); 1362 break; 1363 } 1364 case SLEEFGNUABI: { 1365 switch (TargetTriple.getArch()) { 1366 default: 1367 break; 1368 case llvm::Triple::aarch64: 1369 case llvm::Triple::aarch64_be: 1370 addVectorizableFunctions(VecFuncs_SLEEFGNUABI_VF2); 1371 addVectorizableFunctions(VecFuncs_SLEEFGNUABI_VF4); 1372 addVectorizableFunctions(VecFuncs_SLEEFGNUABI_VFScalable); 1373 break; 1374 } 1375 break; 1376 } 1377 case ArmPL: { 1378 switch (TargetTriple.getArch()) { 1379 default: 1380 break; 1381 case llvm::Triple::aarch64: 1382 case llvm::Triple::aarch64_be: 1383 addVectorizableFunctions(VecFuncs_ArmPL); 1384 break; 1385 } 1386 break; 1387 } 1388 case AMDLIBM: { 1389 addVectorizableFunctions(VecFuncs_AMDLIBM); 1390 break; 1391 } 1392 case NoLibrary: 1393 break; 1394 } 1395 } 1396 1397 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const { 1398 funcName = sanitizeFunctionName(funcName); 1399 if (funcName.empty()) 1400 return false; 1401 1402 std::vector<VecDesc>::const_iterator I = 1403 llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName); 1404 return I != VectorDescs.end() && StringRef(I->getScalarFnName()) == funcName; 1405 } 1406 1407 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F, 1408 const ElementCount &VF, 1409 bool Masked) const { 1410 const VecDesc *VD = getVectorMappingInfo(F, VF, Masked); 1411 if (VD) 1412 return VD->getVectorFnName(); 1413 return StringRef(); 1414 } 1415 1416 const VecDesc * 1417 TargetLibraryInfoImpl::getVectorMappingInfo(StringRef F, const ElementCount &VF, 1418 bool Masked) const { 1419 F = sanitizeFunctionName(F); 1420 if (F.empty()) 1421 return nullptr; 1422 std::vector<VecDesc>::const_iterator I = 1423 llvm::lower_bound(VectorDescs, F, compareWithScalarFnName); 1424 while (I != VectorDescs.end() && StringRef(I->getScalarFnName()) == F) { 1425 if ((I->getVectorizationFactor() == VF) && (I->isMasked() == Masked)) 1426 return &(*I); 1427 ++I; 1428 } 1429 return nullptr; 1430 } 1431 1432 TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F, 1433 FunctionAnalysisManager &) { 1434 if (!BaselineInfoImpl) 1435 BaselineInfoImpl = 1436 TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple())); 1437 return TargetLibraryInfo(*BaselineInfoImpl, &F); 1438 } 1439 1440 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const { 1441 if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>( 1442 M.getModuleFlag("wchar_size"))) 1443 return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue(); 1444 return 0; 1445 } 1446 1447 unsigned TargetLibraryInfoImpl::getSizeTSize(const Module &M) const { 1448 // There is really no guarantee that sizeof(size_t) is equal to sizeof(int*). 1449 // If that isn't true then it should be possible to derive the SizeTTy from 1450 // the target triple here instead and do an early return. 1451 1452 // Historically LLVM assume that size_t has same size as intptr_t (hence 1453 // deriving the size from sizeof(int*) in address space zero). This should 1454 // work for most targets. For future consideration: DataLayout also implement 1455 // getIndexSizeInBits which might map better to size_t compared to 1456 // getPointerSizeInBits. Hard coding address space zero here might be 1457 // unfortunate as well. Maybe getDefaultGlobalsAddressSpace() or 1458 // getAllocaAddrSpace() is better. 1459 unsigned AddressSpace = 0; 1460 return M.getDataLayout().getPointerSizeInBits(AddressSpace); 1461 } 1462 1463 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass() 1464 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) { 1465 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry()); 1466 } 1467 1468 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T) 1469 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) { 1470 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry()); 1471 } 1472 1473 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass( 1474 const TargetLibraryInfoImpl &TLIImpl) 1475 : ImmutablePass(ID), TLA(TLIImpl) { 1476 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry()); 1477 } 1478 1479 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass( 1480 const TargetLibraryInfo &TLIOther) 1481 : TargetLibraryInfoWrapperPass(*TLIOther.Impl) {} 1482 1483 AnalysisKey TargetLibraryAnalysis::Key; 1484 1485 // Register the basic pass. 1486 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo", 1487 "Target Library Information", false, true) 1488 char TargetLibraryInfoWrapperPass::ID = 0; 1489 1490 void TargetLibraryInfoWrapperPass::anchor() {} 1491 1492 void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF, 1493 ElementCount &FixedVF, 1494 ElementCount &ScalableVF) const { 1495 ScalarF = sanitizeFunctionName(ScalarF); 1496 // Use '0' here because a type of the form <vscale x 1 x ElTy> is not the 1497 // same as a scalar. 1498 ScalableVF = ElementCount::getScalable(0); 1499 FixedVF = ElementCount::getFixed(1); 1500 if (ScalarF.empty()) 1501 return; 1502 1503 std::vector<VecDesc>::const_iterator I = 1504 llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName); 1505 while (I != VectorDescs.end() && StringRef(I->getScalarFnName()) == ScalarF) { 1506 ElementCount *VF = 1507 I->getVectorizationFactor().isScalable() ? &ScalableVF : &FixedVF; 1508 if (ElementCount::isKnownGT(I->getVectorizationFactor(), *VF)) 1509 *VF = I->getVectorizationFactor(); 1510 ++I; 1511 } 1512 } 1513