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_sinf); 310 TLI.setUnavailable(LibFunc_sinhf); 311 TLI.setUnavailable(LibFunc_sqrtf); 312 TLI.setUnavailable(LibFunc_tanf); 313 TLI.setUnavailable(LibFunc_tanhf); 314 } 315 if (!isARM) 316 TLI.setUnavailable(LibFunc_fabsf); 317 TLI.setUnavailable(LibFunc_frexpf); 318 TLI.setUnavailable(LibFunc_ldexpf); 319 320 // Win32 does not support long double C89 math functions. 321 TLI.setUnavailable(LibFunc_acosl); 322 TLI.setUnavailable(LibFunc_asinl); 323 TLI.setUnavailable(LibFunc_atan2l); 324 TLI.setUnavailable(LibFunc_atanl); 325 TLI.setUnavailable(LibFunc_ceill); 326 TLI.setUnavailable(LibFunc_cosl); 327 TLI.setUnavailable(LibFunc_coshl); 328 TLI.setUnavailable(LibFunc_expl); 329 TLI.setUnavailable(LibFunc_fabsl); 330 TLI.setUnavailable(LibFunc_floorl); 331 TLI.setUnavailable(LibFunc_fmodl); 332 TLI.setUnavailable(LibFunc_frexpl); 333 TLI.setUnavailable(LibFunc_ldexpl); 334 TLI.setUnavailable(LibFunc_log10l); 335 TLI.setUnavailable(LibFunc_logl); 336 TLI.setUnavailable(LibFunc_modfl); 337 TLI.setUnavailable(LibFunc_powl); 338 TLI.setUnavailable(LibFunc_remainderl); 339 TLI.setUnavailable(LibFunc_remquol); 340 TLI.setUnavailable(LibFunc_sinl); 341 TLI.setUnavailable(LibFunc_sinhl); 342 TLI.setUnavailable(LibFunc_sqrtl); 343 TLI.setUnavailable(LibFunc_tanl); 344 TLI.setUnavailable(LibFunc_tanhl); 345 346 // Win32 does not fully support C99 math functions. 347 if (!hasPartialC99) { 348 TLI.setUnavailable(LibFunc_acosh); 349 TLI.setUnavailable(LibFunc_acoshf); 350 TLI.setUnavailable(LibFunc_asinh); 351 TLI.setUnavailable(LibFunc_asinhf); 352 TLI.setUnavailable(LibFunc_atanh); 353 TLI.setUnavailable(LibFunc_atanhf); 354 TLI.setAvailableWithName(LibFunc_cabs, "_cabs"); 355 TLI.setUnavailable(LibFunc_cabsf); 356 TLI.setUnavailable(LibFunc_cbrt); 357 TLI.setUnavailable(LibFunc_cbrtf); 358 TLI.setAvailableWithName(LibFunc_copysign, "_copysign"); 359 TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf"); 360 TLI.setUnavailable(LibFunc_exp2); 361 TLI.setUnavailable(LibFunc_exp2f); 362 TLI.setUnavailable(LibFunc_expm1); 363 TLI.setUnavailable(LibFunc_expm1f); 364 TLI.setUnavailable(LibFunc_fmax); 365 TLI.setUnavailable(LibFunc_fmaxf); 366 TLI.setUnavailable(LibFunc_fmin); 367 TLI.setUnavailable(LibFunc_fminf); 368 TLI.setUnavailable(LibFunc_log1p); 369 TLI.setUnavailable(LibFunc_log1pf); 370 TLI.setUnavailable(LibFunc_log2); 371 TLI.setUnavailable(LibFunc_log2f); 372 TLI.setAvailableWithName(LibFunc_logb, "_logb"); 373 if (hasPartialFloat) 374 TLI.setAvailableWithName(LibFunc_logbf, "_logbf"); 375 else 376 TLI.setUnavailable(LibFunc_logbf); 377 TLI.setUnavailable(LibFunc_rint); 378 TLI.setUnavailable(LibFunc_rintf); 379 TLI.setUnavailable(LibFunc_round); 380 TLI.setUnavailable(LibFunc_roundf); 381 TLI.setUnavailable(LibFunc_trunc); 382 TLI.setUnavailable(LibFunc_truncf); 383 } 384 385 // Win32 does not support long double C99 math functions. 386 TLI.setUnavailable(LibFunc_acoshl); 387 TLI.setUnavailable(LibFunc_asinhl); 388 TLI.setUnavailable(LibFunc_atanhl); 389 TLI.setUnavailable(LibFunc_cabsl); 390 TLI.setUnavailable(LibFunc_cbrtl); 391 TLI.setUnavailable(LibFunc_copysignl); 392 TLI.setUnavailable(LibFunc_exp2l); 393 TLI.setUnavailable(LibFunc_expm1l); 394 TLI.setUnavailable(LibFunc_fmaxl); 395 TLI.setUnavailable(LibFunc_fminl); 396 TLI.setUnavailable(LibFunc_log1pl); 397 TLI.setUnavailable(LibFunc_log2l); 398 TLI.setUnavailable(LibFunc_logbl); 399 TLI.setUnavailable(LibFunc_nearbyintl); 400 TLI.setUnavailable(LibFunc_rintl); 401 TLI.setUnavailable(LibFunc_roundl); 402 TLI.setUnavailable(LibFunc_truncl); 403 404 // Win32 does not support these functions, but 405 // they are generally available on POSIX-compliant systems. 406 TLI.setUnavailable(LibFunc_access); 407 TLI.setUnavailable(LibFunc_chmod); 408 TLI.setUnavailable(LibFunc_closedir); 409 TLI.setUnavailable(LibFunc_fdopen); 410 TLI.setUnavailable(LibFunc_fileno); 411 TLI.setUnavailable(LibFunc_fseeko); 412 TLI.setUnavailable(LibFunc_fstat); 413 TLI.setUnavailable(LibFunc_ftello); 414 TLI.setUnavailable(LibFunc_gettimeofday); 415 TLI.setUnavailable(LibFunc_memccpy); 416 TLI.setUnavailable(LibFunc_mkdir); 417 TLI.setUnavailable(LibFunc_open); 418 TLI.setUnavailable(LibFunc_opendir); 419 TLI.setUnavailable(LibFunc_pclose); 420 TLI.setUnavailable(LibFunc_popen); 421 TLI.setUnavailable(LibFunc_read); 422 TLI.setUnavailable(LibFunc_rmdir); 423 TLI.setUnavailable(LibFunc_stat); 424 TLI.setUnavailable(LibFunc_strcasecmp); 425 TLI.setUnavailable(LibFunc_strncasecmp); 426 TLI.setUnavailable(LibFunc_unlink); 427 TLI.setUnavailable(LibFunc_utime); 428 TLI.setUnavailable(LibFunc_write); 429 } 430 431 if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) { 432 // These functions aren't available in either MSVC or MinGW environments. 433 TLI.setUnavailable(LibFunc_bcmp); 434 TLI.setUnavailable(LibFunc_bcopy); 435 TLI.setUnavailable(LibFunc_bzero); 436 TLI.setUnavailable(LibFunc_chown); 437 TLI.setUnavailable(LibFunc_ctermid); 438 TLI.setUnavailable(LibFunc_ffs); 439 TLI.setUnavailable(LibFunc_flockfile); 440 TLI.setUnavailable(LibFunc_fstatvfs); 441 TLI.setUnavailable(LibFunc_ftrylockfile); 442 TLI.setUnavailable(LibFunc_funlockfile); 443 TLI.setUnavailable(LibFunc_getitimer); 444 TLI.setUnavailable(LibFunc_getlogin_r); 445 TLI.setUnavailable(LibFunc_getpwnam); 446 TLI.setUnavailable(LibFunc_htonl); 447 TLI.setUnavailable(LibFunc_htons); 448 TLI.setUnavailable(LibFunc_lchown); 449 TLI.setUnavailable(LibFunc_lstat); 450 TLI.setUnavailable(LibFunc_memrchr); 451 TLI.setUnavailable(LibFunc_ntohl); 452 TLI.setUnavailable(LibFunc_ntohs); 453 TLI.setUnavailable(LibFunc_pread); 454 TLI.setUnavailable(LibFunc_pwrite); 455 TLI.setUnavailable(LibFunc_readlink); 456 TLI.setUnavailable(LibFunc_realpath); 457 TLI.setUnavailable(LibFunc_setitimer); 458 TLI.setUnavailable(LibFunc_statvfs); 459 TLI.setUnavailable(LibFunc_stpcpy); 460 TLI.setUnavailable(LibFunc_stpncpy); 461 TLI.setUnavailable(LibFunc_times); 462 TLI.setUnavailable(LibFunc_uname); 463 TLI.setUnavailable(LibFunc_unsetenv); 464 TLI.setUnavailable(LibFunc_utimes); 465 466 // MinGW does have ldexpf, but it is a plain wrapper over regular ldexp. 467 // Therefore it's not beneficial to transform code to use it, i.e. 468 // just pretend that the function is not available. 469 TLI.setUnavailable(LibFunc_ldexpf); 470 } 471 472 // Pick just one set of new/delete variants. 473 if (T.isOSMSVCRT()) { 474 // MSVC, doesn't have the Itanium new/delete. 475 TLI.setUnavailable(LibFunc_ZdaPv); 476 TLI.setUnavailable(LibFunc_ZdaPvRKSt9nothrow_t); 477 TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_t); 478 TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t); 479 TLI.setUnavailable(LibFunc_ZdaPvj); 480 TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t); 481 TLI.setUnavailable(LibFunc_ZdaPvm); 482 TLI.setUnavailable(LibFunc_ZdaPvmSt11align_val_t); 483 TLI.setUnavailable(LibFunc_ZdlPv); 484 TLI.setUnavailable(LibFunc_ZdlPvRKSt9nothrow_t); 485 TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_t); 486 TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t); 487 TLI.setUnavailable(LibFunc_ZdlPvj); 488 TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t); 489 TLI.setUnavailable(LibFunc_ZdlPvm); 490 TLI.setUnavailable(LibFunc_ZdlPvmSt11align_val_t); 491 TLI.setUnavailable(LibFunc_Znaj); 492 TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t); 493 TLI.setUnavailable(LibFunc_ZnajSt11align_val_t); 494 TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t); 495 TLI.setUnavailable(LibFunc_Znam); 496 TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t); 497 TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t12__hot_cold_t); 498 TLI.setUnavailable(LibFunc_ZnamSt11align_val_t); 499 TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t); 500 TLI.setUnavailable(LibFunc_Znwj); 501 TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t); 502 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t); 503 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t); 504 TLI.setUnavailable(LibFunc_Znwm); 505 TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t); 506 TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t12__hot_cold_t); 507 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t); 508 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t); 509 TLI.setUnavailable(LibFunc_Znwm12__hot_cold_t); 510 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t12__hot_cold_t); 511 TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t12__hot_cold_t); 512 TLI.setUnavailable(LibFunc_Znam12__hot_cold_t); 513 TLI.setUnavailable(LibFunc_ZnamSt11align_val_t12__hot_cold_t); 514 TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t12__hot_cold_t); 515 } else { 516 // Not MSVC, assume it's Itanium. 517 TLI.setUnavailable(LibFunc_msvc_new_int); 518 TLI.setUnavailable(LibFunc_msvc_new_int_nothrow); 519 TLI.setUnavailable(LibFunc_msvc_new_longlong); 520 TLI.setUnavailable(LibFunc_msvc_new_longlong_nothrow); 521 TLI.setUnavailable(LibFunc_msvc_delete_ptr32); 522 TLI.setUnavailable(LibFunc_msvc_delete_ptr32_nothrow); 523 TLI.setUnavailable(LibFunc_msvc_delete_ptr32_int); 524 TLI.setUnavailable(LibFunc_msvc_delete_ptr64); 525 TLI.setUnavailable(LibFunc_msvc_delete_ptr64_nothrow); 526 TLI.setUnavailable(LibFunc_msvc_delete_ptr64_longlong); 527 TLI.setUnavailable(LibFunc_msvc_new_array_int); 528 TLI.setUnavailable(LibFunc_msvc_new_array_int_nothrow); 529 TLI.setUnavailable(LibFunc_msvc_new_array_longlong); 530 TLI.setUnavailable(LibFunc_msvc_new_array_longlong_nothrow); 531 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32); 532 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_nothrow); 533 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_int); 534 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64); 535 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_nothrow); 536 TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_longlong); 537 } 538 539 switch (T.getOS()) { 540 case Triple::MacOSX: 541 // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0 542 // and their names are __exp10 and __exp10f. exp10l is not available on 543 // OS X or iOS. 544 TLI.setUnavailable(LibFunc_exp10l); 545 if (T.isMacOSXVersionLT(10, 9)) { 546 TLI.setUnavailable(LibFunc_exp10); 547 TLI.setUnavailable(LibFunc_exp10f); 548 } else { 549 TLI.setAvailableWithName(LibFunc_exp10, "__exp10"); 550 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f"); 551 } 552 break; 553 case Triple::IOS: 554 case Triple::TvOS: 555 case Triple::WatchOS: 556 case Triple::XROS: 557 TLI.setUnavailable(LibFunc_exp10l); 558 if (!T.isWatchOS() && 559 (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) { 560 TLI.setUnavailable(LibFunc_exp10); 561 TLI.setUnavailable(LibFunc_exp10f); 562 } else { 563 TLI.setAvailableWithName(LibFunc_exp10, "__exp10"); 564 TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f"); 565 } 566 break; 567 case Triple::Linux: 568 // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely 569 // buggy prior to glibc version 2.18. Until this version is widely deployed 570 // or we have a reasonable detection strategy, we cannot use exp10 reliably 571 // on Linux. 572 // 573 // Fall through to disable all of them. 574 [[fallthrough]]; 575 default: 576 TLI.setUnavailable(LibFunc_exp10); 577 TLI.setUnavailable(LibFunc_exp10f); 578 TLI.setUnavailable(LibFunc_exp10l); 579 } 580 581 // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and 582 // Linux (GLIBC): 583 // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html 584 // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c 585 // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html 586 switch (T.getOS()) { 587 case Triple::Darwin: 588 case Triple::MacOSX: 589 case Triple::IOS: 590 case Triple::TvOS: 591 case Triple::WatchOS: 592 case Triple::XROS: 593 case Triple::FreeBSD: 594 case Triple::Linux: 595 break; 596 default: 597 TLI.setUnavailable(LibFunc_ffsl); 598 } 599 600 // ffsll is available on at least FreeBSD and Linux (GLIBC): 601 // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c 602 // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.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_ffsll); 615 } 616 617 // The following functions are available on at least FreeBSD: 618 // http://svn.freebsd.org/base/head/lib/libc/string/fls.c 619 // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c 620 // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c 621 if (!T.isOSFreeBSD()) { 622 TLI.setUnavailable(LibFunc_fls); 623 TLI.setUnavailable(LibFunc_flsl); 624 TLI.setUnavailable(LibFunc_flsll); 625 } 626 627 // The following functions are only available on GNU/Linux (using glibc). 628 // Linux variants without glibc (eg: bionic, musl) may have some subset. 629 if (!T.isOSLinux() || !T.isGNUEnvironment()) { 630 TLI.setUnavailable(LibFunc_dunder_strdup); 631 TLI.setUnavailable(LibFunc_dunder_strtok_r); 632 TLI.setUnavailable(LibFunc_dunder_isoc99_scanf); 633 TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf); 634 TLI.setUnavailable(LibFunc_under_IO_getc); 635 TLI.setUnavailable(LibFunc_under_IO_putc); 636 // But, Android and musl have memalign. 637 if (!T.isAndroid() && !T.isMusl()) 638 TLI.setUnavailable(LibFunc_memalign); 639 TLI.setUnavailable(LibFunc_fopen64); 640 TLI.setUnavailable(LibFunc_fseeko64); 641 TLI.setUnavailable(LibFunc_fstat64); 642 TLI.setUnavailable(LibFunc_fstatvfs64); 643 TLI.setUnavailable(LibFunc_ftello64); 644 TLI.setUnavailable(LibFunc_lstat64); 645 TLI.setUnavailable(LibFunc_open64); 646 TLI.setUnavailable(LibFunc_stat64); 647 TLI.setUnavailable(LibFunc_statvfs64); 648 TLI.setUnavailable(LibFunc_tmpfile64); 649 650 // Relaxed math functions are included in math-finite.h on Linux (GLIBC). 651 // Note that math-finite.h is no longer supported by top-of-tree GLIBC, 652 // so we keep these functions around just so that they're recognized by 653 // the ConstantFolder. 654 TLI.setUnavailable(LibFunc_acos_finite); 655 TLI.setUnavailable(LibFunc_acosf_finite); 656 TLI.setUnavailable(LibFunc_acosl_finite); 657 TLI.setUnavailable(LibFunc_acosh_finite); 658 TLI.setUnavailable(LibFunc_acoshf_finite); 659 TLI.setUnavailable(LibFunc_acoshl_finite); 660 TLI.setUnavailable(LibFunc_asin_finite); 661 TLI.setUnavailable(LibFunc_asinf_finite); 662 TLI.setUnavailable(LibFunc_asinl_finite); 663 TLI.setUnavailable(LibFunc_atan2_finite); 664 TLI.setUnavailable(LibFunc_atan2f_finite); 665 TLI.setUnavailable(LibFunc_atan2l_finite); 666 TLI.setUnavailable(LibFunc_atanh_finite); 667 TLI.setUnavailable(LibFunc_atanhf_finite); 668 TLI.setUnavailable(LibFunc_atanhl_finite); 669 TLI.setUnavailable(LibFunc_cosh_finite); 670 TLI.setUnavailable(LibFunc_coshf_finite); 671 TLI.setUnavailable(LibFunc_coshl_finite); 672 TLI.setUnavailable(LibFunc_exp10_finite); 673 TLI.setUnavailable(LibFunc_exp10f_finite); 674 TLI.setUnavailable(LibFunc_exp10l_finite); 675 TLI.setUnavailable(LibFunc_exp2_finite); 676 TLI.setUnavailable(LibFunc_exp2f_finite); 677 TLI.setUnavailable(LibFunc_exp2l_finite); 678 TLI.setUnavailable(LibFunc_exp_finite); 679 TLI.setUnavailable(LibFunc_expf_finite); 680 TLI.setUnavailable(LibFunc_expl_finite); 681 TLI.setUnavailable(LibFunc_log10_finite); 682 TLI.setUnavailable(LibFunc_log10f_finite); 683 TLI.setUnavailable(LibFunc_log10l_finite); 684 TLI.setUnavailable(LibFunc_log2_finite); 685 TLI.setUnavailable(LibFunc_log2f_finite); 686 TLI.setUnavailable(LibFunc_log2l_finite); 687 TLI.setUnavailable(LibFunc_log_finite); 688 TLI.setUnavailable(LibFunc_logf_finite); 689 TLI.setUnavailable(LibFunc_logl_finite); 690 TLI.setUnavailable(LibFunc_pow_finite); 691 TLI.setUnavailable(LibFunc_powf_finite); 692 TLI.setUnavailable(LibFunc_powl_finite); 693 TLI.setUnavailable(LibFunc_sinh_finite); 694 TLI.setUnavailable(LibFunc_sinhf_finite); 695 TLI.setUnavailable(LibFunc_sinhl_finite); 696 TLI.setUnavailable(LibFunc_sqrt_finite); 697 TLI.setUnavailable(LibFunc_sqrtf_finite); 698 TLI.setUnavailable(LibFunc_sqrtl_finite); 699 } 700 701 if ((T.isOSLinux() && T.isGNUEnvironment()) || 702 (T.isAndroid() && !T.isAndroidVersionLT(28))) { 703 // available IO unlocked variants on GNU/Linux and Android P or later 704 TLI.setAvailable(LibFunc_getc_unlocked); 705 TLI.setAvailable(LibFunc_getchar_unlocked); 706 TLI.setAvailable(LibFunc_putc_unlocked); 707 TLI.setAvailable(LibFunc_putchar_unlocked); 708 TLI.setAvailable(LibFunc_fputc_unlocked); 709 TLI.setAvailable(LibFunc_fgetc_unlocked); 710 TLI.setAvailable(LibFunc_fread_unlocked); 711 TLI.setAvailable(LibFunc_fwrite_unlocked); 712 TLI.setAvailable(LibFunc_fputs_unlocked); 713 TLI.setAvailable(LibFunc_fgets_unlocked); 714 } 715 716 if (T.isAndroid() && T.isAndroidVersionLT(21)) { 717 TLI.setUnavailable(LibFunc_stpcpy); 718 TLI.setUnavailable(LibFunc_stpncpy); 719 } 720 721 if (T.isPS()) { 722 // PS4/PS5 do have memalign. 723 TLI.setAvailable(LibFunc_memalign); 724 725 // PS4/PS5 do not have new/delete with "unsigned int" size parameter; 726 // they only have the "unsigned long" versions. 727 TLI.setUnavailable(LibFunc_ZdaPvj); 728 TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t); 729 TLI.setUnavailable(LibFunc_ZdlPvj); 730 TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t); 731 TLI.setUnavailable(LibFunc_Znaj); 732 TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t); 733 TLI.setUnavailable(LibFunc_ZnajSt11align_val_t); 734 TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t); 735 TLI.setUnavailable(LibFunc_Znwj); 736 TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t); 737 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t); 738 TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t); 739 740 // None of the *_chk functions. 741 TLI.setUnavailable(LibFunc_memccpy_chk); 742 TLI.setUnavailable(LibFunc_memcpy_chk); 743 TLI.setUnavailable(LibFunc_memmove_chk); 744 TLI.setUnavailable(LibFunc_mempcpy_chk); 745 TLI.setUnavailable(LibFunc_memset_chk); 746 TLI.setUnavailable(LibFunc_snprintf_chk); 747 TLI.setUnavailable(LibFunc_sprintf_chk); 748 TLI.setUnavailable(LibFunc_stpcpy_chk); 749 TLI.setUnavailable(LibFunc_stpncpy_chk); 750 TLI.setUnavailable(LibFunc_strcat_chk); 751 TLI.setUnavailable(LibFunc_strcpy_chk); 752 TLI.setUnavailable(LibFunc_strlcat_chk); 753 TLI.setUnavailable(LibFunc_strlcpy_chk); 754 TLI.setUnavailable(LibFunc_strlen_chk); 755 TLI.setUnavailable(LibFunc_strncat_chk); 756 TLI.setUnavailable(LibFunc_strncpy_chk); 757 TLI.setUnavailable(LibFunc_vsnprintf_chk); 758 TLI.setUnavailable(LibFunc_vsprintf_chk); 759 760 // Various Posix system functions. 761 TLI.setUnavailable(LibFunc_access); 762 TLI.setUnavailable(LibFunc_chmod); 763 TLI.setUnavailable(LibFunc_chown); 764 TLI.setUnavailable(LibFunc_closedir); 765 TLI.setUnavailable(LibFunc_ctermid); 766 TLI.setUnavailable(LibFunc_execl); 767 TLI.setUnavailable(LibFunc_execle); 768 TLI.setUnavailable(LibFunc_execlp); 769 TLI.setUnavailable(LibFunc_execv); 770 TLI.setUnavailable(LibFunc_execvP); 771 TLI.setUnavailable(LibFunc_execve); 772 TLI.setUnavailable(LibFunc_execvp); 773 TLI.setUnavailable(LibFunc_execvpe); 774 TLI.setUnavailable(LibFunc_fork); 775 TLI.setUnavailable(LibFunc_fstat); 776 TLI.setUnavailable(LibFunc_fstatvfs); 777 TLI.setUnavailable(LibFunc_getenv); 778 TLI.setUnavailable(LibFunc_getitimer); 779 TLI.setUnavailable(LibFunc_getlogin_r); 780 TLI.setUnavailable(LibFunc_getpwnam); 781 TLI.setUnavailable(LibFunc_gettimeofday); 782 TLI.setUnavailable(LibFunc_lchown); 783 TLI.setUnavailable(LibFunc_lstat); 784 TLI.setUnavailable(LibFunc_mkdir); 785 TLI.setUnavailable(LibFunc_open); 786 TLI.setUnavailable(LibFunc_opendir); 787 TLI.setUnavailable(LibFunc_pclose); 788 TLI.setUnavailable(LibFunc_popen); 789 TLI.setUnavailable(LibFunc_pread); 790 TLI.setUnavailable(LibFunc_pwrite); 791 TLI.setUnavailable(LibFunc_read); 792 TLI.setUnavailable(LibFunc_readlink); 793 TLI.setUnavailable(LibFunc_realpath); 794 TLI.setUnavailable(LibFunc_rename); 795 TLI.setUnavailable(LibFunc_rmdir); 796 TLI.setUnavailable(LibFunc_setitimer); 797 TLI.setUnavailable(LibFunc_stat); 798 TLI.setUnavailable(LibFunc_statvfs); 799 TLI.setUnavailable(LibFunc_system); 800 TLI.setUnavailable(LibFunc_times); 801 TLI.setUnavailable(LibFunc_tmpfile); 802 TLI.setUnavailable(LibFunc_unlink); 803 TLI.setUnavailable(LibFunc_uname); 804 TLI.setUnavailable(LibFunc_unsetenv); 805 TLI.setUnavailable(LibFunc_utime); 806 TLI.setUnavailable(LibFunc_utimes); 807 TLI.setUnavailable(LibFunc_valloc); 808 TLI.setUnavailable(LibFunc_write); 809 810 // Miscellaneous other functions not provided. 811 TLI.setUnavailable(LibFunc_atomic_load); 812 TLI.setUnavailable(LibFunc_atomic_store); 813 TLI.setUnavailable(LibFunc___kmpc_alloc_shared); 814 TLI.setUnavailable(LibFunc___kmpc_free_shared); 815 TLI.setUnavailable(LibFunc_dunder_strndup); 816 TLI.setUnavailable(LibFunc_bcmp); 817 TLI.setUnavailable(LibFunc_bcopy); 818 TLI.setUnavailable(LibFunc_bzero); 819 TLI.setUnavailable(LibFunc_cabs); 820 TLI.setUnavailable(LibFunc_cabsf); 821 TLI.setUnavailable(LibFunc_cabsl); 822 TLI.setUnavailable(LibFunc_ffs); 823 TLI.setUnavailable(LibFunc_flockfile); 824 TLI.setUnavailable(LibFunc_fseeko); 825 TLI.setUnavailable(LibFunc_ftello); 826 TLI.setUnavailable(LibFunc_ftrylockfile); 827 TLI.setUnavailable(LibFunc_funlockfile); 828 TLI.setUnavailable(LibFunc_htonl); 829 TLI.setUnavailable(LibFunc_htons); 830 TLI.setUnavailable(LibFunc_isascii); 831 TLI.setUnavailable(LibFunc_memccpy); 832 TLI.setUnavailable(LibFunc_mempcpy); 833 TLI.setUnavailable(LibFunc_memrchr); 834 TLI.setUnavailable(LibFunc_ntohl); 835 TLI.setUnavailable(LibFunc_ntohs); 836 TLI.setUnavailable(LibFunc_reallocf); 837 TLI.setUnavailable(LibFunc_roundeven); 838 TLI.setUnavailable(LibFunc_roundevenf); 839 TLI.setUnavailable(LibFunc_roundevenl); 840 TLI.setUnavailable(LibFunc_stpcpy); 841 TLI.setUnavailable(LibFunc_stpncpy); 842 TLI.setUnavailable(LibFunc_strlcat); 843 TLI.setUnavailable(LibFunc_strlcpy); 844 TLI.setUnavailable(LibFunc_strndup); 845 TLI.setUnavailable(LibFunc_strnlen); 846 TLI.setUnavailable(LibFunc_toascii); 847 } 848 849 // As currently implemented in clang, NVPTX code has no standard library to 850 // speak of. Headers provide a standard-ish library implementation, but many 851 // of the signatures are wrong -- for example, many libm functions are not 852 // extern "C". 853 // 854 // libdevice, an IR library provided by nvidia, is linked in by the front-end, 855 // but only used functions are provided to llvm. Moreover, most of the 856 // functions in libdevice don't map precisely to standard library functions. 857 // 858 // FIXME: Having no standard library prevents e.g. many fastmath 859 // optimizations, so this situation should be fixed. 860 if (T.isNVPTX()) { 861 TLI.disableAllFunctions(); 862 TLI.setAvailable(LibFunc_nvvm_reflect); 863 TLI.setAvailable(llvm::LibFunc_malloc); 864 TLI.setAvailable(llvm::LibFunc_free); 865 866 // TODO: We could enable the following two according to [0] but we haven't 867 // done an evaluation wrt. the performance implications. 868 // [0] 869 // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations 870 // 871 // TLI.setAvailable(llvm::LibFunc_memcpy); 872 // TLI.setAvailable(llvm::LibFunc_memset); 873 874 TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared); 875 TLI.setAvailable(llvm::LibFunc___kmpc_free_shared); 876 } else { 877 TLI.setUnavailable(LibFunc_nvvm_reflect); 878 } 879 880 // These vec_malloc/free routines are only available on AIX. 881 if (!T.isOSAIX()) { 882 TLI.setUnavailable(LibFunc_vec_calloc); 883 TLI.setUnavailable(LibFunc_vec_malloc); 884 TLI.setUnavailable(LibFunc_vec_realloc); 885 TLI.setUnavailable(LibFunc_vec_free); 886 } 887 888 if (T.isOSAIX()) 889 TLI.setUnavailable(LibFunc_memrchr); 890 891 TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary, T); 892 } 893 894 /// Initialize the set of available library functions based on the specified 895 /// target triple. This should be carefully written so that a missing target 896 /// triple gets a sane set of defaults. 897 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T, 898 ArrayRef<StringLiteral> StandardNames) { 899 initializeBase(TLI, T); 900 initializeLibCalls(TLI, T, StandardNames); 901 } 902 903 TargetLibraryInfoImpl::TargetLibraryInfoImpl() { 904 // Default to nothing being available. 905 memset(AvailableArray, 0, sizeof(AvailableArray)); 906 initializeBase(*this, Triple()); 907 } 908 909 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) { 910 // Default to everything being available. 911 memset(AvailableArray, -1, sizeof(AvailableArray)); 912 913 initialize(*this, T, StandardNames); 914 } 915 916 TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI) 917 : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param), 918 ShouldExtI32Return(TLI.ShouldExtI32Return), 919 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param), 920 ShouldSignExtI32Return(TLI.ShouldSignExtI32Return), 921 SizeOfInt(TLI.SizeOfInt) { 922 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray)); 923 VectorDescs = TLI.VectorDescs; 924 ScalarDescs = TLI.ScalarDescs; 925 } 926 927 TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI) 928 : CustomNames(std::move(TLI.CustomNames)), 929 ShouldExtI32Param(TLI.ShouldExtI32Param), 930 ShouldExtI32Return(TLI.ShouldExtI32Return), 931 ShouldSignExtI32Param(TLI.ShouldSignExtI32Param), 932 ShouldSignExtI32Return(TLI.ShouldSignExtI32Return), 933 SizeOfInt(TLI.SizeOfInt) { 934 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray), 935 AvailableArray); 936 VectorDescs = TLI.VectorDescs; 937 ScalarDescs = TLI.ScalarDescs; 938 } 939 940 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) { 941 CustomNames = TLI.CustomNames; 942 ShouldExtI32Param = TLI.ShouldExtI32Param; 943 ShouldExtI32Return = TLI.ShouldExtI32Return; 944 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param; 945 ShouldSignExtI32Return = TLI.ShouldSignExtI32Return; 946 SizeOfInt = TLI.SizeOfInt; 947 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray)); 948 return *this; 949 } 950 951 TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) { 952 CustomNames = std::move(TLI.CustomNames); 953 ShouldExtI32Param = TLI.ShouldExtI32Param; 954 ShouldExtI32Return = TLI.ShouldExtI32Return; 955 ShouldSignExtI32Param = TLI.ShouldSignExtI32Param; 956 ShouldSignExtI32Return = TLI.ShouldSignExtI32Return; 957 SizeOfInt = TLI.SizeOfInt; 958 std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray), 959 AvailableArray); 960 return *this; 961 } 962 963 static StringRef sanitizeFunctionName(StringRef funcName) { 964 // Filter out empty names and names containing null bytes, those can't be in 965 // our table. 966 if (funcName.empty() || funcName.contains('\0')) 967 return StringRef(); 968 969 // Check for \01 prefix that is used to mangle __asm declarations and 970 // strip it if present. 971 return GlobalValue::dropLLVMManglingEscape(funcName); 972 } 973 974 static DenseMap<StringRef, LibFunc> 975 buildIndexMap(ArrayRef<StringLiteral> StandardNames) { 976 DenseMap<StringRef, LibFunc> Indices; 977 unsigned Idx = 0; 978 Indices.reserve(LibFunc::NumLibFuncs); 979 for (const auto &Func : StandardNames) 980 Indices[Func] = static_cast<LibFunc>(Idx++); 981 return Indices; 982 } 983 984 bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const { 985 funcName = sanitizeFunctionName(funcName); 986 if (funcName.empty()) 987 return false; 988 989 static const DenseMap<StringRef, LibFunc> Indices = 990 buildIndexMap(StandardNames); 991 992 if (auto Loc = Indices.find(funcName); Loc != Indices.end()) { 993 F = Loc->second; 994 return true; 995 } 996 return false; 997 } 998 999 // Return true if ArgTy matches Ty. 1000 1001 static bool matchType(FuncArgTypeID ArgTy, const Type *Ty, unsigned IntBits, 1002 unsigned SizeTBits) { 1003 switch (ArgTy) { 1004 case Void: 1005 return Ty->isVoidTy(); 1006 case Bool: 1007 return Ty->isIntegerTy(8); 1008 case Int16: 1009 return Ty->isIntegerTy(16); 1010 case Int32: 1011 return Ty->isIntegerTy(32); 1012 case Int: 1013 return Ty->isIntegerTy(IntBits); 1014 case IntPlus: 1015 return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits; 1016 case IntX: 1017 return Ty->isIntegerTy(); 1018 case Long: 1019 // TODO: Figure out and use long size. 1020 return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits; 1021 case Int64: 1022 return Ty->isIntegerTy(64); 1023 case LLong: 1024 return Ty->isIntegerTy(64); 1025 case SizeT: 1026 case SSizeT: 1027 return Ty->isIntegerTy(SizeTBits); 1028 case Flt: 1029 return Ty->isFloatTy(); 1030 case Dbl: 1031 return Ty->isDoubleTy(); 1032 // TODO: Tighten this up. 1033 case LDbl: 1034 return Ty->isFloatingPointTy(); 1035 case Floating: 1036 return Ty->isFloatingPointTy(); 1037 case Ptr: 1038 return Ty->isPointerTy(); 1039 case Struct: 1040 return Ty->isStructTy(); 1041 default: 1042 break; 1043 } 1044 1045 llvm_unreachable("Invalid type"); 1046 } 1047 1048 bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy, 1049 LibFunc F, 1050 const Module &M) const { 1051 unsigned NumParams = FTy.getNumParams(); 1052 1053 switch (F) { 1054 // Special handling for <complex.h> functions: 1055 case LibFunc_cabs: 1056 case LibFunc_cabsf: 1057 case LibFunc_cabsl: { 1058 Type *RetTy = FTy.getReturnType(); 1059 if (!RetTy->isFloatingPointTy()) 1060 return false; 1061 1062 Type *ParamTy = FTy.getParamType(0); 1063 // NOTE: These prototypes are target specific and currently support 1064 // "complex" passed as an array or discrete real & imaginary parameters. 1065 // Add other calling conventions to enable libcall optimizations. 1066 if (NumParams == 1) 1067 return (ParamTy->isArrayTy() && ParamTy->getArrayNumElements() == 2 && 1068 ParamTy->getArrayElementType() == RetTy); 1069 else if (NumParams == 2) 1070 return ParamTy == RetTy && FTy.getParamType(1) == RetTy; 1071 1072 return false; 1073 } 1074 // Special handling for the sincospi functions that return either 1075 // a struct or vector: 1076 case LibFunc_sincospi_stret: 1077 case LibFunc_sincospif_stret: { 1078 if (NumParams != 1) 1079 return false; 1080 1081 Type *RetTy = FTy.getReturnType(); 1082 Type *ParamTy = FTy.getParamType(0); 1083 if (auto *Ty = dyn_cast<StructType>(RetTy)) { 1084 if (Ty->getNumElements() != 2) 1085 return false; 1086 return (Ty->getElementType(0) == ParamTy && 1087 Ty->getElementType(1) == ParamTy); 1088 } 1089 1090 if (auto *Ty = dyn_cast<FixedVectorType>(RetTy)) { 1091 if (Ty->getNumElements() != 2) 1092 return false; 1093 return Ty->getElementType() == ParamTy; 1094 } 1095 1096 return false; 1097 } 1098 1099 default: 1100 break; 1101 } 1102 1103 unsigned IntBits = getIntSize(); 1104 unsigned SizeTBits = getSizeTSize(M); 1105 unsigned Idx = 0; 1106 1107 // Iterate over the type ids in the function prototype, matching each 1108 // against the function's type FTy, starting with its return type. 1109 // Return true if both match in number and kind, inclduing the ellipsis. 1110 Type *Ty = FTy.getReturnType(), *LastTy = Ty; 1111 const auto &ProtoTypes = Signatures[F]; 1112 for (auto TyID : ProtoTypes) { 1113 if (Idx && TyID == Void) 1114 // Except in the first position where it designates the function's 1115 // return type Void ends the argument list. 1116 break; 1117 1118 if (TyID == Ellip) { 1119 // The ellipsis ends the protoype list but is not a part of FTy's 1120 // argument list. Except when it's last it must be followed by 1121 // Void. 1122 assert(Idx == ProtoTypes.size() - 1 || ProtoTypes[Idx + 1] == Void); 1123 return FTy.isFunctionVarArg(); 1124 } 1125 1126 if (TyID == Same) { 1127 assert(Idx != 0 && "Type ID 'Same' must not be first!"); 1128 if (Ty != LastTy) 1129 return false; 1130 } else { 1131 if (!Ty || !matchType(TyID, Ty, IntBits, SizeTBits)) 1132 return false; 1133 LastTy = Ty; 1134 } 1135 1136 if (Idx == NumParams) { 1137 // There's at least one and at most two more type ids than there are 1138 // arguments in FTy's argument list. 1139 Ty = nullptr; 1140 ++Idx; 1141 continue; 1142 } 1143 1144 Ty = FTy.getParamType(Idx++); 1145 } 1146 1147 // Return success only if all entries on both lists have been processed 1148 // and the function is not a variadic one. 1149 return Idx == NumParams + 1 && !FTy.isFunctionVarArg(); 1150 } 1151 1152 bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl, 1153 LibFunc &F) const { 1154 // Intrinsics don't overlap w/libcalls; if our module has a large number of 1155 // intrinsics, this ends up being an interesting compile time win since we 1156 // avoid string normalization and comparison. 1157 if (FDecl.isIntrinsic()) return false; 1158 1159 const Module *M = FDecl.getParent(); 1160 assert(M && "Expecting FDecl to be connected to a Module."); 1161 1162 if (FDecl.LibFuncCache == Function::UnknownLibFunc) 1163 if (!getLibFunc(FDecl.getName(), FDecl.LibFuncCache)) 1164 FDecl.LibFuncCache = NotLibFunc; 1165 1166 if (FDecl.LibFuncCache == NotLibFunc) 1167 return false; 1168 1169 F = FDecl.LibFuncCache; 1170 return isValidProtoForLibFunc(*FDecl.getFunctionType(), F, *M); 1171 } 1172 1173 bool TargetLibraryInfoImpl::getLibFunc(unsigned int Opcode, Type *Ty, 1174 LibFunc &F) const { 1175 // Must be a frem instruction with float or double arguments. 1176 if (Opcode != Instruction::FRem || (!Ty->isDoubleTy() && !Ty->isFloatTy())) 1177 return false; 1178 1179 F = Ty->isDoubleTy() ? LibFunc_fmod : LibFunc_fmodf; 1180 return true; 1181 } 1182 1183 void TargetLibraryInfoImpl::disableAllFunctions() { 1184 memset(AvailableArray, 0, sizeof(AvailableArray)); 1185 } 1186 1187 static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) { 1188 return LHS.getScalarFnName() < RHS.getScalarFnName(); 1189 } 1190 1191 static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) { 1192 return LHS.getVectorFnName() < RHS.getVectorFnName(); 1193 } 1194 1195 static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) { 1196 return LHS.getScalarFnName() < S; 1197 } 1198 1199 void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) { 1200 llvm::append_range(VectorDescs, Fns); 1201 llvm::sort(VectorDescs, compareByScalarFnName); 1202 1203 llvm::append_range(ScalarDescs, Fns); 1204 llvm::sort(ScalarDescs, compareByVectorFnName); 1205 } 1206 1207 static const VecDesc VecFuncs_Accelerate[] = { 1208 #define TLI_DEFINE_ACCELERATE_VECFUNCS 1209 #include "llvm/Analysis/VecFuncs.def" 1210 #undef TLI_DEFINE_ACCELERATE_VECFUNCS 1211 }; 1212 1213 static const VecDesc VecFuncs_DarwinLibSystemM[] = { 1214 #define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS 1215 #include "llvm/Analysis/VecFuncs.def" 1216 #undef TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS 1217 }; 1218 1219 static const VecDesc VecFuncs_LIBMVEC_X86[] = { 1220 #define TLI_DEFINE_LIBMVEC_X86_VECFUNCS 1221 #include "llvm/Analysis/VecFuncs.def" 1222 #undef TLI_DEFINE_LIBMVEC_X86_VECFUNCS 1223 }; 1224 1225 static const VecDesc VecFuncs_MASSV[] = { 1226 #define TLI_DEFINE_MASSV_VECFUNCS 1227 #include "llvm/Analysis/VecFuncs.def" 1228 #undef TLI_DEFINE_MASSV_VECFUNCS 1229 }; 1230 1231 static const VecDesc VecFuncs_SVML[] = { 1232 #define TLI_DEFINE_SVML_VECFUNCS 1233 #include "llvm/Analysis/VecFuncs.def" 1234 #undef TLI_DEFINE_SVML_VECFUNCS 1235 }; 1236 1237 static const VecDesc VecFuncs_SLEEFGNUABI_VF2[] = { 1238 #define TLI_DEFINE_SLEEFGNUABI_VF2_VECFUNCS 1239 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, VABI_PREFIX) \ 1240 {SCAL, VEC, VF, /* MASK = */ false, VABI_PREFIX}, 1241 #include "llvm/Analysis/VecFuncs.def" 1242 #undef TLI_DEFINE_SLEEFGNUABI_VF2_VECFUNCS 1243 }; 1244 static const VecDesc VecFuncs_SLEEFGNUABI_VF4[] = { 1245 #define TLI_DEFINE_SLEEFGNUABI_VF4_VECFUNCS 1246 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, VABI_PREFIX) \ 1247 {SCAL, VEC, VF, /* MASK = */ false, VABI_PREFIX}, 1248 #include "llvm/Analysis/VecFuncs.def" 1249 #undef TLI_DEFINE_SLEEFGNUABI_VF4_VECFUNCS 1250 }; 1251 static const VecDesc VecFuncs_SLEEFGNUABI_VFScalable[] = { 1252 #define TLI_DEFINE_SLEEFGNUABI_SCALABLE_VECFUNCS 1253 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \ 1254 {SCAL, VEC, VF, MASK, VABI_PREFIX}, 1255 #include "llvm/Analysis/VecFuncs.def" 1256 #undef TLI_DEFINE_SLEEFGNUABI_SCALABLE_VECFUNCS 1257 }; 1258 1259 static const VecDesc VecFuncs_ArmPL[] = { 1260 #define TLI_DEFINE_ARMPL_VECFUNCS 1261 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \ 1262 {SCAL, VEC, VF, MASK, VABI_PREFIX}, 1263 #include "llvm/Analysis/VecFuncs.def" 1264 #undef TLI_DEFINE_ARMPL_VECFUNCS 1265 }; 1266 1267 const VecDesc VecFuncs_AMDLIBM[] = { 1268 #define TLI_DEFINE_AMDLIBM_VECFUNCS 1269 #define TLI_DEFINE_VECFUNC(SCAL, VEC, VF, MASK, VABI_PREFIX) \ 1270 {SCAL, VEC, VF, MASK, VABI_PREFIX}, 1271 #include "llvm/Analysis/VecFuncs.def" 1272 #undef TLI_DEFINE_AMDLIBM_VECFUNCS 1273 }; 1274 1275 void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib( 1276 enum VectorLibrary VecLib, const llvm::Triple &TargetTriple) { 1277 switch (VecLib) { 1278 case Accelerate: { 1279 addVectorizableFunctions(VecFuncs_Accelerate); 1280 break; 1281 } 1282 case DarwinLibSystemM: { 1283 addVectorizableFunctions(VecFuncs_DarwinLibSystemM); 1284 break; 1285 } 1286 case LIBMVEC_X86: { 1287 addVectorizableFunctions(VecFuncs_LIBMVEC_X86); 1288 break; 1289 } 1290 case MASSV: { 1291 addVectorizableFunctions(VecFuncs_MASSV); 1292 break; 1293 } 1294 case SVML: { 1295 addVectorizableFunctions(VecFuncs_SVML); 1296 break; 1297 } 1298 case SLEEFGNUABI: { 1299 switch (TargetTriple.getArch()) { 1300 default: 1301 break; 1302 case llvm::Triple::aarch64: 1303 case llvm::Triple::aarch64_be: 1304 addVectorizableFunctions(VecFuncs_SLEEFGNUABI_VF2); 1305 addVectorizableFunctions(VecFuncs_SLEEFGNUABI_VF4); 1306 addVectorizableFunctions(VecFuncs_SLEEFGNUABI_VFScalable); 1307 break; 1308 } 1309 break; 1310 } 1311 case ArmPL: { 1312 switch (TargetTriple.getArch()) { 1313 default: 1314 break; 1315 case llvm::Triple::aarch64: 1316 case llvm::Triple::aarch64_be: 1317 addVectorizableFunctions(VecFuncs_ArmPL); 1318 break; 1319 } 1320 break; 1321 } 1322 case AMDLIBM: { 1323 addVectorizableFunctions(VecFuncs_AMDLIBM); 1324 break; 1325 } 1326 case NoLibrary: 1327 break; 1328 } 1329 } 1330 1331 bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const { 1332 funcName = sanitizeFunctionName(funcName); 1333 if (funcName.empty()) 1334 return false; 1335 1336 std::vector<VecDesc>::const_iterator I = 1337 llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName); 1338 return I != VectorDescs.end() && StringRef(I->getScalarFnName()) == funcName; 1339 } 1340 1341 StringRef TargetLibraryInfoImpl::getVectorizedFunction(StringRef F, 1342 const ElementCount &VF, 1343 bool Masked) const { 1344 const VecDesc *VD = getVectorMappingInfo(F, VF, Masked); 1345 if (VD) 1346 return VD->getVectorFnName(); 1347 return StringRef(); 1348 } 1349 1350 const VecDesc * 1351 TargetLibraryInfoImpl::getVectorMappingInfo(StringRef F, const ElementCount &VF, 1352 bool Masked) const { 1353 F = sanitizeFunctionName(F); 1354 if (F.empty()) 1355 return nullptr; 1356 std::vector<VecDesc>::const_iterator I = 1357 llvm::lower_bound(VectorDescs, F, compareWithScalarFnName); 1358 while (I != VectorDescs.end() && StringRef(I->getScalarFnName()) == F) { 1359 if ((I->getVectorizationFactor() == VF) && (I->isMasked() == Masked)) 1360 return &(*I); 1361 ++I; 1362 } 1363 return nullptr; 1364 } 1365 1366 TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F, 1367 FunctionAnalysisManager &) { 1368 if (!BaselineInfoImpl) 1369 BaselineInfoImpl = 1370 TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple())); 1371 return TargetLibraryInfo(*BaselineInfoImpl, &F); 1372 } 1373 1374 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const { 1375 if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>( 1376 M.getModuleFlag("wchar_size"))) 1377 return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue(); 1378 return 0; 1379 } 1380 1381 unsigned TargetLibraryInfoImpl::getSizeTSize(const Module &M) const { 1382 // There is really no guarantee that sizeof(size_t) is equal to sizeof(int*). 1383 // If that isn't true then it should be possible to derive the SizeTTy from 1384 // the target triple here instead and do an early return. 1385 1386 // Historically LLVM assume that size_t has same size as intptr_t (hence 1387 // deriving the size from sizeof(int*) in address space zero). This should 1388 // work for most targets. For future consideration: DataLayout also implement 1389 // getIndexSizeInBits which might map better to size_t compared to 1390 // getPointerSizeInBits. Hard coding address space zero here might be 1391 // unfortunate as well. Maybe getDefaultGlobalsAddressSpace() or 1392 // getAllocaAddrSpace() is better. 1393 unsigned AddressSpace = 0; 1394 return M.getDataLayout().getPointerSizeInBits(AddressSpace); 1395 } 1396 1397 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass() 1398 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) { 1399 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry()); 1400 } 1401 1402 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T) 1403 : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) { 1404 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry()); 1405 } 1406 1407 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass( 1408 const TargetLibraryInfoImpl &TLIImpl) 1409 : ImmutablePass(ID), TLA(TLIImpl) { 1410 initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry()); 1411 } 1412 1413 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass( 1414 const TargetLibraryInfo &TLIOther) 1415 : TargetLibraryInfoWrapperPass(*TLIOther.Impl) {} 1416 1417 AnalysisKey TargetLibraryAnalysis::Key; 1418 1419 // Register the basic pass. 1420 INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo", 1421 "Target Library Information", false, true) 1422 char TargetLibraryInfoWrapperPass::ID = 0; 1423 1424 void TargetLibraryInfoWrapperPass::anchor() {} 1425 1426 void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF, 1427 ElementCount &FixedVF, 1428 ElementCount &ScalableVF) const { 1429 ScalarF = sanitizeFunctionName(ScalarF); 1430 // Use '0' here because a type of the form <vscale x 1 x ElTy> is not the 1431 // same as a scalar. 1432 ScalableVF = ElementCount::getScalable(0); 1433 FixedVF = ElementCount::getFixed(1); 1434 if (ScalarF.empty()) 1435 return; 1436 1437 std::vector<VecDesc>::const_iterator I = 1438 llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName); 1439 while (I != VectorDescs.end() && StringRef(I->getScalarFnName()) == ScalarF) { 1440 ElementCount *VF = 1441 I->getVectorizationFactor().isScalable() ? &ScalableVF : &FixedVF; 1442 if (ElementCount::isKnownGT(I->getVectorizationFactor(), *VF)) 1443 *VF = I->getVectorizationFactor(); 1444 ++I; 1445 } 1446 } 1447