1//===-- ARMTargetParser - Parser for ARM target features --------*- C++ -*-===// 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 a target parser to recognise ARM hardware features 10// such as FPU/CPU/ARCH/extensions and specific support such as HWDIV. 11// 12//===----------------------------------------------------------------------===// 13 14#include "llvm/Support/ARMTargetParser.h" 15#include "llvm/ADT/StringSwitch.h" 16#include <cctype> 17 18using namespace llvm; 19 20static StringRef getHWDivSynonym(StringRef HWDiv) { 21 return StringSwitch<StringRef>(HWDiv) 22 .Case("thumb,arm", "arm,thumb") 23 .Default(HWDiv); 24} 25 26// Allows partial match, ex. "v7a" matches "armv7a". 27ARM::ArchKind ARM::parseArch(StringRef Arch) { 28 Arch = getCanonicalArchName(Arch); 29 StringRef Syn = getArchSynonym(Arch); 30 for (const auto A : ARCHNames) { 31 if (A.getName().endswith(Syn)) 32 return A.ID; 33 } 34 return ArchKind::INVALID; 35} 36 37// Version number (ex. v7 = 7). 38unsigned ARM::parseArchVersion(StringRef Arch) { 39 Arch = getCanonicalArchName(Arch); 40 switch (parseArch(Arch)) { 41 case ArchKind::ARMV2: 42 case ArchKind::ARMV2A: 43 return 2; 44 case ArchKind::ARMV3: 45 case ArchKind::ARMV3M: 46 return 3; 47 case ArchKind::ARMV4: 48 case ArchKind::ARMV4T: 49 return 4; 50 case ArchKind::ARMV5T: 51 case ArchKind::ARMV5TE: 52 case ArchKind::IWMMXT: 53 case ArchKind::IWMMXT2: 54 case ArchKind::XSCALE: 55 case ArchKind::ARMV5TEJ: 56 return 5; 57 case ArchKind::ARMV6: 58 case ArchKind::ARMV6K: 59 case ArchKind::ARMV6T2: 60 case ArchKind::ARMV6KZ: 61 case ArchKind::ARMV6M: 62 return 6; 63 case ArchKind::ARMV7A: 64 case ArchKind::ARMV7VE: 65 case ArchKind::ARMV7R: 66 case ArchKind::ARMV7M: 67 case ArchKind::ARMV7S: 68 case ArchKind::ARMV7EM: 69 case ArchKind::ARMV7K: 70 return 7; 71 case ArchKind::ARMV8A: 72 case ArchKind::ARMV8_1A: 73 case ArchKind::ARMV8_2A: 74 case ArchKind::ARMV8_3A: 75 case ArchKind::ARMV8_4A: 76 case ArchKind::ARMV8_5A: 77 case ArchKind::ARMV8R: 78 case ArchKind::ARMV8MBaseline: 79 case ArchKind::ARMV8MMainline: 80 case ArchKind::ARMV8_1MMainline: 81 return 8; 82 case ArchKind::INVALID: 83 return 0; 84 } 85 llvm_unreachable("Unhandled architecture"); 86} 87 88// Profile A/R/M 89ARM::ProfileKind ARM::parseArchProfile(StringRef Arch) { 90 Arch = getCanonicalArchName(Arch); 91 switch (parseArch(Arch)) { 92 case ArchKind::ARMV6M: 93 case ArchKind::ARMV7M: 94 case ArchKind::ARMV7EM: 95 case ArchKind::ARMV8MMainline: 96 case ArchKind::ARMV8MBaseline: 97 case ArchKind::ARMV8_1MMainline: 98 return ProfileKind::M; 99 case ArchKind::ARMV7R: 100 case ArchKind::ARMV8R: 101 return ProfileKind::R; 102 case ArchKind::ARMV7A: 103 case ArchKind::ARMV7VE: 104 case ArchKind::ARMV7K: 105 case ArchKind::ARMV8A: 106 case ArchKind::ARMV8_1A: 107 case ArchKind::ARMV8_2A: 108 case ArchKind::ARMV8_3A: 109 case ArchKind::ARMV8_4A: 110 case ArchKind::ARMV8_5A: 111 return ProfileKind::A; 112 case ArchKind::ARMV2: 113 case ArchKind::ARMV2A: 114 case ArchKind::ARMV3: 115 case ArchKind::ARMV3M: 116 case ArchKind::ARMV4: 117 case ArchKind::ARMV4T: 118 case ArchKind::ARMV5T: 119 case ArchKind::ARMV5TE: 120 case ArchKind::ARMV5TEJ: 121 case ArchKind::ARMV6: 122 case ArchKind::ARMV6K: 123 case ArchKind::ARMV6T2: 124 case ArchKind::ARMV6KZ: 125 case ArchKind::ARMV7S: 126 case ArchKind::IWMMXT: 127 case ArchKind::IWMMXT2: 128 case ArchKind::XSCALE: 129 case ArchKind::INVALID: 130 return ProfileKind::INVALID; 131 } 132 llvm_unreachable("Unhandled architecture"); 133} 134 135StringRef ARM::getArchSynonym(StringRef Arch) { 136 return StringSwitch<StringRef>(Arch) 137 .Case("v5", "v5t") 138 .Case("v5e", "v5te") 139 .Case("v6j", "v6") 140 .Case("v6hl", "v6k") 141 .Cases("v6m", "v6sm", "v6s-m", "v6-m") 142 .Cases("v6z", "v6zk", "v6kz") 143 .Cases("v7", "v7a", "v7hl", "v7l", "v7-a") 144 .Case("v7r", "v7-r") 145 .Case("v7m", "v7-m") 146 .Case("v7em", "v7e-m") 147 .Cases("v8", "v8a", "v8l", "aarch64", "arm64", "v8-a") 148 .Case("v8.1a", "v8.1-a") 149 .Case("v8.2a", "v8.2-a") 150 .Case("v8.3a", "v8.3-a") 151 .Case("v8.4a", "v8.4-a") 152 .Case("v8.5a", "v8.5-a") 153 .Case("v8r", "v8-r") 154 .Case("v8m.base", "v8-m.base") 155 .Case("v8m.main", "v8-m.main") 156 .Case("v8.1m.main", "v8.1-m.main") 157 .Default(Arch); 158} 159 160bool ARM::getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features) { 161 162 if (FPUKind >= FK_LAST || FPUKind == FK_INVALID) 163 return false; 164 165 static const struct FPUFeatureNameInfo { 166 const char *PlusName, *MinusName; 167 FPUVersion MinVersion; 168 FPURestriction MaxRestriction; 169 } FPUFeatureInfoList[] = { 170 // We have to specify the + and - versions of the name in full so 171 // that we can return them as static StringRefs. 172 // 173 // Also, the SubtargetFeatures ending in just "sp" are listed here 174 // under FPURestriction::None, which is the only FPURestriction in 175 // which they would be valid (since FPURestriction::SP doesn't 176 // exist). 177 {"+vfp2", "-vfp2", FPUVersion::VFPV2, FPURestriction::D16}, 178 {"+vfp2sp", "-vfp2sp", FPUVersion::VFPV2, FPURestriction::SP_D16}, 179 {"+vfp3", "-vfp3", FPUVersion::VFPV3, FPURestriction::None}, 180 {"+vfp3d16", "-vfp3d16", FPUVersion::VFPV3, FPURestriction::D16}, 181 {"+vfp3d16sp", "-vfp3d16sp", FPUVersion::VFPV3, FPURestriction::SP_D16}, 182 {"+vfp3sp", "-vfp3sp", FPUVersion::VFPV3, FPURestriction::None}, 183 {"+fp16", "-fp16", FPUVersion::VFPV3_FP16, FPURestriction::SP_D16}, 184 {"+vfp4", "-vfp4", FPUVersion::VFPV4, FPURestriction::None}, 185 {"+vfp4d16", "-vfp4d16", FPUVersion::VFPV4, FPURestriction::D16}, 186 {"+vfp4d16sp", "-vfp4d16sp", FPUVersion::VFPV4, FPURestriction::SP_D16}, 187 {"+vfp4sp", "-vfp4sp", FPUVersion::VFPV4, FPURestriction::None}, 188 {"+fp-armv8", "-fp-armv8", FPUVersion::VFPV5, FPURestriction::None}, 189 {"+fp-armv8d16", "-fp-armv8d16", FPUVersion::VFPV5, FPURestriction::D16}, 190 {"+fp-armv8d16sp", "-fp-armv8d16sp", FPUVersion::VFPV5, FPURestriction::SP_D16}, 191 {"+fp-armv8sp", "-fp-armv8sp", FPUVersion::VFPV5, FPURestriction::None}, 192 {"+fullfp16", "-fullfp16", FPUVersion::VFPV5_FULLFP16, FPURestriction::SP_D16}, 193 {"+fp64", "-fp64", FPUVersion::VFPV2, FPURestriction::D16}, 194 {"+d32", "-d32", FPUVersion::VFPV3, FPURestriction::None}, 195 }; 196 197 for (const auto &Info: FPUFeatureInfoList) { 198 if (FPUNames[FPUKind].FPUVer >= Info.MinVersion && 199 FPUNames[FPUKind].Restriction <= Info.MaxRestriction) 200 Features.push_back(Info.PlusName); 201 else 202 Features.push_back(Info.MinusName); 203 } 204 205 static const struct NeonFeatureNameInfo { 206 const char *PlusName, *MinusName; 207 NeonSupportLevel MinSupportLevel; 208 } NeonFeatureInfoList[] = { 209 {"+neon", "-neon", NeonSupportLevel::Neon}, 210 {"+crypto", "-crypto", NeonSupportLevel::Crypto}, 211 }; 212 213 for (const auto &Info: NeonFeatureInfoList) { 214 if (FPUNames[FPUKind].NeonSupport >= Info.MinSupportLevel) 215 Features.push_back(Info.PlusName); 216 else 217 Features.push_back(Info.MinusName); 218 } 219 220 return true; 221} 222 223// Little/Big endian 224ARM::EndianKind ARM::parseArchEndian(StringRef Arch) { 225 if (Arch.startswith("armeb") || Arch.startswith("thumbeb") || 226 Arch.startswith("aarch64_be")) 227 return EndianKind::BIG; 228 229 if (Arch.startswith("arm") || Arch.startswith("thumb")) { 230 if (Arch.endswith("eb")) 231 return EndianKind::BIG; 232 else 233 return EndianKind::LITTLE; 234 } 235 236 if (Arch.startswith("aarch64") || Arch.startswith("aarch64_32")) 237 return EndianKind::LITTLE; 238 239 return EndianKind::INVALID; 240} 241 242// ARM, Thumb, AArch64 243ARM::ISAKind ARM::parseArchISA(StringRef Arch) { 244 return StringSwitch<ISAKind>(Arch) 245 .StartsWith("aarch64", ISAKind::AARCH64) 246 .StartsWith("arm64", ISAKind::AARCH64) 247 .StartsWith("thumb", ISAKind::THUMB) 248 .StartsWith("arm", ISAKind::ARM) 249 .Default(ISAKind::INVALID); 250} 251 252unsigned ARM::parseFPU(StringRef FPU) { 253 StringRef Syn = getFPUSynonym(FPU); 254 for (const auto F : FPUNames) { 255 if (Syn == F.getName()) 256 return F.ID; 257 } 258 return FK_INVALID; 259} 260 261ARM::NeonSupportLevel ARM::getFPUNeonSupportLevel(unsigned FPUKind) { 262 if (FPUKind >= FK_LAST) 263 return NeonSupportLevel::None; 264 return FPUNames[FPUKind].NeonSupport; 265} 266 267// MArch is expected to be of the form (arm|thumb)?(eb)?(v.+)?(eb)?, but 268// (iwmmxt|xscale)(eb)? is also permitted. If the former, return 269// "v.+", if the latter, return unmodified string, minus 'eb'. 270// If invalid, return empty string. 271StringRef ARM::getCanonicalArchName(StringRef Arch) { 272 size_t offset = StringRef::npos; 273 StringRef A = Arch; 274 StringRef Error = ""; 275 276 // Begins with "arm" / "thumb", move past it. 277 if (A.startswith("arm64_32")) 278 offset = 8; 279 else if (A.startswith("arm64")) 280 offset = 5; 281 else if (A.startswith("aarch64_32")) 282 offset = 10; 283 else if (A.startswith("arm")) 284 offset = 3; 285 else if (A.startswith("thumb")) 286 offset = 5; 287 else if (A.startswith("aarch64")) { 288 offset = 7; 289 // AArch64 uses "_be", not "eb" suffix. 290 if (A.find("eb") != StringRef::npos) 291 return Error; 292 if (A.substr(offset, 3) == "_be") 293 offset += 3; 294 } 295 296 // Ex. "armebv7", move past the "eb". 297 if (offset != StringRef::npos && A.substr(offset, 2) == "eb") 298 offset += 2; 299 // Or, if it ends with eb ("armv7eb"), chop it off. 300 else if (A.endswith("eb")) 301 A = A.substr(0, A.size() - 2); 302 // Trim the head 303 if (offset != StringRef::npos) 304 A = A.substr(offset); 305 306 // Empty string means offset reached the end, which means it's valid. 307 if (A.empty()) 308 return Arch; 309 310 // Only match non-marketing names 311 if (offset != StringRef::npos) { 312 // Must start with 'vN'. 313 if (A.size() >= 2 && (A[0] != 'v' || !std::isdigit(A[1]))) 314 return Error; 315 // Can't have an extra 'eb'. 316 if (A.find("eb") != StringRef::npos) 317 return Error; 318 } 319 320 // Arch will either be a 'v' name (v7a) or a marketing name (xscale). 321 return A; 322} 323 324StringRef ARM::getFPUSynonym(StringRef FPU) { 325 return StringSwitch<StringRef>(FPU) 326 .Cases("fpa", "fpe2", "fpe3", "maverick", "invalid") // Unsupported 327 .Case("vfp2", "vfpv2") 328 .Case("vfp3", "vfpv3") 329 .Case("vfp4", "vfpv4") 330 .Case("vfp3-d16", "vfpv3-d16") 331 .Case("vfp4-d16", "vfpv4-d16") 332 .Cases("fp4-sp-d16", "vfpv4-sp-d16", "fpv4-sp-d16") 333 .Cases("fp4-dp-d16", "fpv4-dp-d16", "vfpv4-d16") 334 .Case("fp5-sp-d16", "fpv5-sp-d16") 335 .Cases("fp5-dp-d16", "fpv5-dp-d16", "fpv5-d16") 336 // FIXME: Clang uses it, but it's bogus, since neon defaults to vfpv3. 337 .Case("neon-vfpv3", "neon") 338 .Default(FPU); 339} 340 341StringRef ARM::getFPUName(unsigned FPUKind) { 342 if (FPUKind >= FK_LAST) 343 return StringRef(); 344 return FPUNames[FPUKind].getName(); 345} 346 347ARM::FPUVersion ARM::getFPUVersion(unsigned FPUKind) { 348 if (FPUKind >= FK_LAST) 349 return FPUVersion::NONE; 350 return FPUNames[FPUKind].FPUVer; 351} 352 353ARM::FPURestriction ARM::getFPURestriction(unsigned FPUKind) { 354 if (FPUKind >= FK_LAST) 355 return FPURestriction::None; 356 return FPUNames[FPUKind].Restriction; 357} 358 359unsigned ARM::getDefaultFPU(StringRef CPU, ARM::ArchKind AK) { 360 if (CPU == "generic") 361 return ARM::ARCHNames[static_cast<unsigned>(AK)].DefaultFPU; 362 363 return StringSwitch<unsigned>(CPU) 364#define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT) \ 365 .Case(NAME, DEFAULT_FPU) 366#include "llvm/Support/ARMTargetParser.def" 367 .Default(ARM::FK_INVALID); 368} 369 370unsigned ARM::getDefaultExtensions(StringRef CPU, ARM::ArchKind AK) { 371 if (CPU == "generic") 372 return ARM::ARCHNames[static_cast<unsigned>(AK)].ArchBaseExtensions; 373 374 return StringSwitch<unsigned>(CPU) 375#define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT) \ 376 .Case(NAME, \ 377 ARCHNames[static_cast<unsigned>(ArchKind::ID)].ArchBaseExtensions | \ 378 DEFAULT_EXT) 379#include "llvm/Support/ARMTargetParser.def" 380 .Default(ARM::AEK_INVALID); 381} 382 383bool ARM::getHWDivFeatures(unsigned HWDivKind, 384 std::vector<StringRef> &Features) { 385 386 if (HWDivKind == AEK_INVALID) 387 return false; 388 389 if (HWDivKind & AEK_HWDIVARM) 390 Features.push_back("+hwdiv-arm"); 391 else 392 Features.push_back("-hwdiv-arm"); 393 394 if (HWDivKind & AEK_HWDIVTHUMB) 395 Features.push_back("+hwdiv"); 396 else 397 Features.push_back("-hwdiv"); 398 399 return true; 400} 401 402bool ARM::getExtensionFeatures(unsigned Extensions, 403 std::vector<StringRef> &Features) { 404 405 if (Extensions == AEK_INVALID) 406 return false; 407 408 for (const auto AE : ARCHExtNames) { 409 if ((Extensions & AE.ID) == AE.ID && AE.Feature) 410 Features.push_back(AE.Feature); 411 else if (AE.NegFeature) 412 Features.push_back(AE.NegFeature); 413 } 414 415 return getHWDivFeatures(Extensions, Features); 416} 417 418StringRef ARM::getArchName(ARM::ArchKind AK) { 419 return ARCHNames[static_cast<unsigned>(AK)].getName(); 420} 421 422StringRef ARM::getCPUAttr(ARM::ArchKind AK) { 423 return ARCHNames[static_cast<unsigned>(AK)].getCPUAttr(); 424} 425 426StringRef ARM::getSubArch(ARM::ArchKind AK) { 427 return ARCHNames[static_cast<unsigned>(AK)].getSubArch(); 428} 429 430unsigned ARM::getArchAttr(ARM::ArchKind AK) { 431 return ARCHNames[static_cast<unsigned>(AK)].ArchAttr; 432} 433 434StringRef ARM::getArchExtName(unsigned ArchExtKind) { 435 for (const auto AE : ARCHExtNames) { 436 if (ArchExtKind == AE.ID) 437 return AE.getName(); 438 } 439 return StringRef(); 440} 441 442static bool stripNegationPrefix(StringRef &Name) { 443 if (Name.startswith("no")) { 444 Name = Name.substr(2); 445 return true; 446 } 447 return false; 448} 449 450StringRef ARM::getArchExtFeature(StringRef ArchExt) { 451 bool Negated = stripNegationPrefix(ArchExt); 452 for (const auto AE : ARCHExtNames) { 453 if (AE.Feature && ArchExt == AE.getName()) 454 return StringRef(Negated ? AE.NegFeature : AE.Feature); 455 } 456 457 return StringRef(); 458} 459 460static unsigned findDoublePrecisionFPU(unsigned InputFPUKind) { 461 const ARM::FPUName &InputFPU = ARM::FPUNames[InputFPUKind]; 462 463 // If the input FPU already supports double-precision, then there 464 // isn't any different FPU we can return here. 465 // 466 // The current available FPURestriction values are None (no 467 // restriction), D16 (only 16 d-regs) and SP_D16 (16 d-regs 468 // and single precision only); there's no value representing 469 // SP restriction without D16. So this test just means 'is it 470 // SP only?'. 471 if (InputFPU.Restriction != ARM::FPURestriction::SP_D16) 472 return ARM::FK_INVALID; 473 474 // Otherwise, look for an FPU entry with all the same fields, except 475 // that SP_D16 has been replaced with just D16, representing adding 476 // double precision and not changing anything else. 477 for (const ARM::FPUName &CandidateFPU : ARM::FPUNames) { 478 if (CandidateFPU.FPUVer == InputFPU.FPUVer && 479 CandidateFPU.NeonSupport == InputFPU.NeonSupport && 480 CandidateFPU.Restriction == ARM::FPURestriction::D16) { 481 return CandidateFPU.ID; 482 } 483 } 484 485 // nothing found 486 return ARM::FK_INVALID; 487} 488 489static unsigned getAEKID(StringRef ArchExtName) { 490 for (const auto AE : ARM::ARCHExtNames) 491 if (AE.getName() == ArchExtName) 492 return AE.ID; 493 return ARM::AEK_INVALID; 494} 495 496bool ARM::appendArchExtFeatures( 497 StringRef CPU, ARM::ArchKind AK, StringRef ArchExt, 498 std::vector<StringRef> &Features) { 499 500 size_t StartingNumFeatures = Features.size(); 501 const bool Negated = stripNegationPrefix(ArchExt); 502 unsigned ID = getAEKID(ArchExt); 503 504 if (ID == AEK_INVALID) 505 return false; 506 507 for (const auto AE : ARCHExtNames) { 508 if (Negated && (AE.ID & ID) == ID && AE.NegFeature) 509 Features.push_back(AE.NegFeature); 510 else if (AE.ID == ID && AE.Feature) 511 Features.push_back(AE.Feature); 512 } 513 514 if (CPU == "") 515 CPU = "generic"; 516 517 if (ArchExt == "fp" || ArchExt == "fp.dp") { 518 unsigned FPUKind; 519 if (ArchExt == "fp.dp") { 520 if (Negated) { 521 Features.push_back("-fp64"); 522 return true; 523 } 524 FPUKind = findDoublePrecisionFPU(getDefaultFPU(CPU, AK)); 525 } else if (Negated) { 526 FPUKind = ARM::FK_NONE; 527 } else { 528 FPUKind = getDefaultFPU(CPU, AK); 529 } 530 return ARM::getFPUFeatures(FPUKind, Features); 531 } 532 return StartingNumFeatures != Features.size(); 533} 534 535StringRef ARM::getHWDivName(unsigned HWDivKind) { 536 for (const auto D : HWDivNames) { 537 if (HWDivKind == D.ID) 538 return D.getName(); 539 } 540 return StringRef(); 541} 542 543StringRef ARM::getDefaultCPU(StringRef Arch) { 544 ArchKind AK = parseArch(Arch); 545 if (AK == ArchKind::INVALID) 546 return StringRef(); 547 548 // Look for multiple AKs to find the default for pair AK+Name. 549 for (const auto CPU : CPUNames) { 550 if (CPU.ArchID == AK && CPU.Default) 551 return CPU.getName(); 552 } 553 554 // If we can't find a default then target the architecture instead 555 return "generic"; 556} 557 558unsigned ARM::parseHWDiv(StringRef HWDiv) { 559 StringRef Syn = getHWDivSynonym(HWDiv); 560 for (const auto D : HWDivNames) { 561 if (Syn == D.getName()) 562 return D.ID; 563 } 564 return AEK_INVALID; 565} 566 567unsigned ARM::parseArchExt(StringRef ArchExt) { 568 for (const auto A : ARCHExtNames) { 569 if (ArchExt == A.getName()) 570 return A.ID; 571 } 572 return AEK_INVALID; 573} 574 575ARM::ArchKind ARM::parseCPUArch(StringRef CPU) { 576 for (const auto C : CPUNames) { 577 if (CPU == C.getName()) 578 return C.ArchID; 579 } 580 return ArchKind::INVALID; 581} 582 583void ARM::fillValidCPUArchList(SmallVectorImpl<StringRef> &Values) { 584 for (const CpuNames<ArchKind> &Arch : CPUNames) { 585 if (Arch.ArchID != ArchKind::INVALID) 586 Values.push_back(Arch.getName()); 587 } 588} 589 590StringRef ARM::computeDefaultTargetABI(const Triple &TT, StringRef CPU) { 591 StringRef ArchName = 592 CPU.empty() ? TT.getArchName() : getArchName(parseCPUArch(CPU)); 593 594 if (TT.isOSBinFormatMachO()) { 595 if (TT.getEnvironment() == Triple::EABI || 596 TT.getOS() == Triple::UnknownOS || 597 parseArchProfile(ArchName) == ProfileKind::M) 598 return "aapcs"; 599 if (TT.isWatchABI()) 600 return "aapcs16"; 601 return "apcs-gnu"; 602 } else if (TT.isOSWindows()) 603 // FIXME: this is invalid for WindowsCE. 604 return "aapcs"; 605 606 // Select the default based on the platform. 607 switch (TT.getEnvironment()) { 608 case Triple::Android: 609 case Triple::GNUEABI: 610 case Triple::GNUEABIHF: 611 case Triple::MuslEABI: 612 case Triple::MuslEABIHF: 613 return "aapcs-linux"; 614 case Triple::EABIHF: 615 case Triple::EABI: 616 return "aapcs"; 617 default: 618 if (TT.isOSNetBSD()) 619 return "apcs-gnu"; 620 if (TT.isOSOpenBSD()) 621 return "aapcs-linux"; 622 return "aapcs"; 623 } 624} 625