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Diffstat (limited to 'contrib/llvm/lib/Support/ARMTargetParser.cpp')
| -rw-r--r-- | contrib/llvm/lib/Support/ARMTargetParser.cpp | 626 |
1 files changed, 0 insertions, 626 deletions
diff --git a/contrib/llvm/lib/Support/ARMTargetParser.cpp b/contrib/llvm/lib/Support/ARMTargetParser.cpp deleted file mode 100644 index ce5daa7fe58c..000000000000 --- a/contrib/llvm/lib/Support/ARMTargetParser.cpp +++ /dev/null @@ -1,626 +0,0 @@ -//===-- ARMTargetParser - Parser for ARM target features --------*- C++ -*-===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -// -// This file implements a target parser to recognise ARM hardware features -// such as FPU/CPU/ARCH/extensions and specific support such as HWDIV. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Support/ARMTargetParser.h" -#include "llvm/ADT/StringSwitch.h" -#include <cctype> - -using namespace llvm; - -static StringRef getHWDivSynonym(StringRef HWDiv) { - return StringSwitch<StringRef>(HWDiv) - .Case("thumb,arm", "arm,thumb") - .Default(HWDiv); -} - -// Allows partial match, ex. "v7a" matches "armv7a". -ARM::ArchKind ARM::parseArch(StringRef Arch) { - Arch = getCanonicalArchName(Arch); - StringRef Syn = getArchSynonym(Arch); - for (const auto A : ARCHNames) { - if (A.getName().endswith(Syn)) - return A.ID; - } - return ArchKind::INVALID; -} - -// Version number (ex. v7 = 7). -unsigned ARM::parseArchVersion(StringRef Arch) { - Arch = getCanonicalArchName(Arch); - switch (parseArch(Arch)) { - case ArchKind::ARMV2: - case ArchKind::ARMV2A: - return 2; - case ArchKind::ARMV3: - case ArchKind::ARMV3M: - return 3; - case ArchKind::ARMV4: - case ArchKind::ARMV4T: - return 4; - case ArchKind::ARMV5T: - case ArchKind::ARMV5TE: - case ArchKind::IWMMXT: - case ArchKind::IWMMXT2: - case ArchKind::XSCALE: - case ArchKind::ARMV5TEJ: - return 5; - case ArchKind::ARMV6: - case ArchKind::ARMV6K: - case ArchKind::ARMV6T2: - case ArchKind::ARMV6KZ: - case ArchKind::ARMV6M: - return 6; - case ArchKind::ARMV7A: - case ArchKind::ARMV7VE: - case ArchKind::ARMV7R: - case ArchKind::ARMV7M: - case ArchKind::ARMV7S: - case ArchKind::ARMV7EM: - case ArchKind::ARMV7K: - return 7; - case ArchKind::ARMV8A: - case ArchKind::ARMV8_1A: - case ArchKind::ARMV8_2A: - case ArchKind::ARMV8_3A: - case ArchKind::ARMV8_4A: - case ArchKind::ARMV8_5A: - case ArchKind::ARMV8R: - case ArchKind::ARMV8MBaseline: - case ArchKind::ARMV8MMainline: - case ArchKind::ARMV8_1MMainline: - return 8; - case ArchKind::INVALID: - return 0; - } - llvm_unreachable("Unhandled architecture"); -} - -// Profile A/R/M -ARM::ProfileKind ARM::parseArchProfile(StringRef Arch) { - Arch = getCanonicalArchName(Arch); - switch (parseArch(Arch)) { - case ArchKind::ARMV6M: - case ArchKind::ARMV7M: - case ArchKind::ARMV7EM: - case ArchKind::ARMV8MMainline: - case ArchKind::ARMV8MBaseline: - case ArchKind::ARMV8_1MMainline: - return ProfileKind::M; - case ArchKind::ARMV7R: - case ArchKind::ARMV8R: - return ProfileKind::R; - case ArchKind::ARMV7A: - case ArchKind::ARMV7VE: - case ArchKind::ARMV7K: - case ArchKind::ARMV8A: - case ArchKind::ARMV8_1A: - case ArchKind::ARMV8_2A: - case ArchKind::ARMV8_3A: - case ArchKind::ARMV8_4A: - case ArchKind::ARMV8_5A: - return ProfileKind::A; - case ArchKind::ARMV2: - case ArchKind::ARMV2A: - case ArchKind::ARMV3: - case ArchKind::ARMV3M: - case ArchKind::ARMV4: - case ArchKind::ARMV4T: - case ArchKind::ARMV5T: - case ArchKind::ARMV5TE: - case ArchKind::ARMV5TEJ: - case ArchKind::ARMV6: - case ArchKind::ARMV6K: - case ArchKind::ARMV6T2: - case ArchKind::ARMV6KZ: - case ArchKind::ARMV7S: - case ArchKind::IWMMXT: - case ArchKind::IWMMXT2: - case ArchKind::XSCALE: - case ArchKind::INVALID: - return ProfileKind::INVALID; - } - llvm_unreachable("Unhandled architecture"); -} - -StringRef ARM::getArchSynonym(StringRef Arch) { - return StringSwitch<StringRef>(Arch) - .Case("v5", "v5t") - .Case("v5e", "v5te") - .Case("v6j", "v6") - .Case("v6hl", "v6k") - .Cases("v6m", "v6sm", "v6s-m", "v6-m") - .Cases("v6z", "v6zk", "v6kz") - .Cases("v7", "v7a", "v7hl", "v7l", "v7-a") - .Case("v7r", "v7-r") - .Case("v7m", "v7-m") - .Case("v7em", "v7e-m") - .Cases("v8", "v8a", "v8l", "aarch64", "arm64", "v8-a") - .Case("v8.1a", "v8.1-a") - .Case("v8.2a", "v8.2-a") - .Case("v8.3a", "v8.3-a") - .Case("v8.4a", "v8.4-a") - .Case("v8.5a", "v8.5-a") - .Case("v8r", "v8-r") - .Case("v8m.base", "v8-m.base") - .Case("v8m.main", "v8-m.main") - .Case("v8.1m.main", "v8.1-m.main") - .Default(Arch); -} - -bool ARM::getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features) { - - if (FPUKind >= FK_LAST || FPUKind == FK_INVALID) - return false; - - static const struct FPUFeatureNameInfo { - const char *PlusName, *MinusName; - FPUVersion MinVersion; - FPURestriction MaxRestriction; - } FPUFeatureInfoList[] = { - // We have to specify the + and - versions of the name in full so - // that we can return them as static StringRefs. - // - // Also, the SubtargetFeatures ending in just "sp" are listed here - // under FPURestriction::None, which is the only FPURestriction in - // which they would be valid (since FPURestriction::SP doesn't - // exist). - - {"+fpregs", "-fpregs", FPUVersion::VFPV2, FPURestriction::SP_D16}, - {"+vfp2", "-vfp2", FPUVersion::VFPV2, FPURestriction::D16}, - {"+vfp2sp", "-vfp2sp", FPUVersion::VFPV2, FPURestriction::SP_D16}, - {"+vfp3", "-vfp3", FPUVersion::VFPV3, FPURestriction::None}, - {"+vfp3d16", "-vfp3d16", FPUVersion::VFPV3, FPURestriction::D16}, - {"+vfp3d16sp", "-vfp3d16sp", FPUVersion::VFPV3, FPURestriction::SP_D16}, - {"+vfp3sp", "-vfp3sp", FPUVersion::VFPV3, FPURestriction::None}, - {"+fp16", "-fp16", FPUVersion::VFPV3_FP16, FPURestriction::SP_D16}, - {"+vfp4", "-vfp4", FPUVersion::VFPV4, FPURestriction::None}, - {"+vfp4d16", "-vfp4d16", FPUVersion::VFPV4, FPURestriction::D16}, - {"+vfp4d16sp", "-vfp4d16sp", FPUVersion::VFPV4, FPURestriction::SP_D16}, - {"+vfp4sp", "-vfp4sp", FPUVersion::VFPV4, FPURestriction::None}, - {"+fp-armv8", "-fp-armv8", FPUVersion::VFPV5, FPURestriction::None}, - {"+fp-armv8d16", "-fp-armv8d16", FPUVersion::VFPV5, FPURestriction::D16}, - {"+fp-armv8d16sp", "-fp-armv8d16sp", FPUVersion::VFPV5, FPURestriction::SP_D16}, - {"+fp-armv8sp", "-fp-armv8sp", FPUVersion::VFPV5, FPURestriction::None}, - {"+fullfp16", "-fullfp16", FPUVersion::VFPV5_FULLFP16, FPURestriction::SP_D16}, - {"+fp64", "-fp64", FPUVersion::VFPV2, FPURestriction::D16}, - {"+d32", "-d32", FPUVersion::VFPV3, FPURestriction::None}, - }; - - for (const auto &Info: FPUFeatureInfoList) { - if (FPUNames[FPUKind].FPUVer >= Info.MinVersion && - FPUNames[FPUKind].Restriction <= Info.MaxRestriction) - Features.push_back(Info.PlusName); - else - Features.push_back(Info.MinusName); - } - - static const struct NeonFeatureNameInfo { - const char *PlusName, *MinusName; - NeonSupportLevel MinSupportLevel; - } NeonFeatureInfoList[] = { - {"+neon", "-neon", NeonSupportLevel::Neon}, - {"+crypto", "-crypto", NeonSupportLevel::Crypto}, - }; - - for (const auto &Info: NeonFeatureInfoList) { - if (FPUNames[FPUKind].NeonSupport >= Info.MinSupportLevel) - Features.push_back(Info.PlusName); - else - Features.push_back(Info.MinusName); - } - - return true; -} - -// Little/Big endian -ARM::EndianKind ARM::parseArchEndian(StringRef Arch) { - if (Arch.startswith("armeb") || Arch.startswith("thumbeb") || - Arch.startswith("aarch64_be")) - return EndianKind::BIG; - - if (Arch.startswith("arm") || Arch.startswith("thumb")) { - if (Arch.endswith("eb")) - return EndianKind::BIG; - else - return EndianKind::LITTLE; - } - - if (Arch.startswith("aarch64") || Arch.startswith("aarch64_32")) - return EndianKind::LITTLE; - - return EndianKind::INVALID; -} - -// ARM, Thumb, AArch64 -ARM::ISAKind ARM::parseArchISA(StringRef Arch) { - return StringSwitch<ISAKind>(Arch) - .StartsWith("aarch64", ISAKind::AARCH64) - .StartsWith("arm64", ISAKind::AARCH64) - .StartsWith("thumb", ISAKind::THUMB) - .StartsWith("arm", ISAKind::ARM) - .Default(ISAKind::INVALID); -} - -unsigned ARM::parseFPU(StringRef FPU) { - StringRef Syn = getFPUSynonym(FPU); - for (const auto F : FPUNames) { - if (Syn == F.getName()) - return F.ID; - } - return FK_INVALID; -} - -ARM::NeonSupportLevel ARM::getFPUNeonSupportLevel(unsigned FPUKind) { - if (FPUKind >= FK_LAST) - return NeonSupportLevel::None; - return FPUNames[FPUKind].NeonSupport; -} - -// MArch is expected to be of the form (arm|thumb)?(eb)?(v.+)?(eb)?, but -// (iwmmxt|xscale)(eb)? is also permitted. If the former, return -// "v.+", if the latter, return unmodified string, minus 'eb'. -// If invalid, return empty string. -StringRef ARM::getCanonicalArchName(StringRef Arch) { - size_t offset = StringRef::npos; - StringRef A = Arch; - StringRef Error = ""; - - // Begins with "arm" / "thumb", move past it. - if (A.startswith("arm64_32")) - offset = 8; - else if (A.startswith("arm64")) - offset = 5; - else if (A.startswith("aarch64_32")) - offset = 10; - else if (A.startswith("arm")) - offset = 3; - else if (A.startswith("thumb")) - offset = 5; - else if (A.startswith("aarch64")) { - offset = 7; - // AArch64 uses "_be", not "eb" suffix. - if (A.find("eb") != StringRef::npos) - return Error; - if (A.substr(offset, 3) == "_be") - offset += 3; - } - - // Ex. "armebv7", move past the "eb". - if (offset != StringRef::npos && A.substr(offset, 2) == "eb") - offset += 2; - // Or, if it ends with eb ("armv7eb"), chop it off. - else if (A.endswith("eb")) - A = A.substr(0, A.size() - 2); - // Trim the head - if (offset != StringRef::npos) - A = A.substr(offset); - - // Empty string means offset reached the end, which means it's valid. - if (A.empty()) - return Arch; - - // Only match non-marketing names - if (offset != StringRef::npos) { - // Must start with 'vN'. - if (A.size() >= 2 && (A[0] != 'v' || !std::isdigit(A[1]))) - return Error; - // Can't have an extra 'eb'. - if (A.find("eb") != StringRef::npos) - return Error; - } - - // Arch will either be a 'v' name (v7a) or a marketing name (xscale). - return A; -} - -StringRef ARM::getFPUSynonym(StringRef FPU) { - return StringSwitch<StringRef>(FPU) - .Cases("fpa", "fpe2", "fpe3", "maverick", "invalid") // Unsupported - .Case("vfp2", "vfpv2") - .Case("vfp3", "vfpv3") - .Case("vfp4", "vfpv4") - .Case("vfp3-d16", "vfpv3-d16") - .Case("vfp4-d16", "vfpv4-d16") - .Cases("fp4-sp-d16", "vfpv4-sp-d16", "fpv4-sp-d16") - .Cases("fp4-dp-d16", "fpv4-dp-d16", "vfpv4-d16") - .Case("fp5-sp-d16", "fpv5-sp-d16") - .Cases("fp5-dp-d16", "fpv5-dp-d16", "fpv5-d16") - // FIXME: Clang uses it, but it's bogus, since neon defaults to vfpv3. - .Case("neon-vfpv3", "neon") - .Default(FPU); -} - -StringRef ARM::getFPUName(unsigned FPUKind) { - if (FPUKind >= FK_LAST) - return StringRef(); - return FPUNames[FPUKind].getName(); -} - -ARM::FPUVersion ARM::getFPUVersion(unsigned FPUKind) { - if (FPUKind >= FK_LAST) - return FPUVersion::NONE; - return FPUNames[FPUKind].FPUVer; -} - -ARM::FPURestriction ARM::getFPURestriction(unsigned FPUKind) { - if (FPUKind >= FK_LAST) - return FPURestriction::None; - return FPUNames[FPUKind].Restriction; -} - -unsigned ARM::getDefaultFPU(StringRef CPU, ARM::ArchKind AK) { - if (CPU == "generic") - return ARM::ARCHNames[static_cast<unsigned>(AK)].DefaultFPU; - - return StringSwitch<unsigned>(CPU) -#define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT) \ - .Case(NAME, DEFAULT_FPU) -#include "llvm/Support/ARMTargetParser.def" - .Default(ARM::FK_INVALID); -} - -unsigned ARM::getDefaultExtensions(StringRef CPU, ARM::ArchKind AK) { - if (CPU == "generic") - return ARM::ARCHNames[static_cast<unsigned>(AK)].ArchBaseExtensions; - - return StringSwitch<unsigned>(CPU) -#define ARM_CPU_NAME(NAME, ID, DEFAULT_FPU, IS_DEFAULT, DEFAULT_EXT) \ - .Case(NAME, \ - ARCHNames[static_cast<unsigned>(ArchKind::ID)].ArchBaseExtensions | \ - DEFAULT_EXT) -#include "llvm/Support/ARMTargetParser.def" - .Default(ARM::AEK_INVALID); -} - -bool ARM::getHWDivFeatures(unsigned HWDivKind, - std::vector<StringRef> &Features) { - - if (HWDivKind == AEK_INVALID) - return false; - - if (HWDivKind & AEK_HWDIVARM) - Features.push_back("+hwdiv-arm"); - else - Features.push_back("-hwdiv-arm"); - - if (HWDivKind & AEK_HWDIVTHUMB) - Features.push_back("+hwdiv"); - else - Features.push_back("-hwdiv"); - - return true; -} - -bool ARM::getExtensionFeatures(unsigned Extensions, - std::vector<StringRef> &Features) { - - if (Extensions == AEK_INVALID) - return false; - - for (const auto AE : ARCHExtNames) { - if ((Extensions & AE.ID) == AE.ID && AE.Feature) - Features.push_back(AE.Feature); - else if (AE.NegFeature) - Features.push_back(AE.NegFeature); - } - - return getHWDivFeatures(Extensions, Features); -} - -StringRef ARM::getArchName(ARM::ArchKind AK) { - return ARCHNames[static_cast<unsigned>(AK)].getName(); -} - -StringRef ARM::getCPUAttr(ARM::ArchKind AK) { - return ARCHNames[static_cast<unsigned>(AK)].getCPUAttr(); -} - -StringRef ARM::getSubArch(ARM::ArchKind AK) { - return ARCHNames[static_cast<unsigned>(AK)].getSubArch(); -} - -unsigned ARM::getArchAttr(ARM::ArchKind AK) { - return ARCHNames[static_cast<unsigned>(AK)].ArchAttr; -} - -StringRef ARM::getArchExtName(unsigned ArchExtKind) { - for (const auto AE : ARCHExtNames) { - if (ArchExtKind == AE.ID) - return AE.getName(); - } - return StringRef(); -} - -static bool stripNegationPrefix(StringRef &Name) { - if (Name.startswith("no")) { - Name = Name.substr(2); - return true; - } - return false; -} - -StringRef ARM::getArchExtFeature(StringRef ArchExt) { - bool Negated = stripNegationPrefix(ArchExt); - for (const auto AE : ARCHExtNames) { - if (AE.Feature && ArchExt == AE.getName()) - return StringRef(Negated ? AE.NegFeature : AE.Feature); - } - - return StringRef(); -} - -static unsigned findDoublePrecisionFPU(unsigned InputFPUKind) { - const ARM::FPUName &InputFPU = ARM::FPUNames[InputFPUKind]; - - // If the input FPU already supports double-precision, then there - // isn't any different FPU we can return here. - // - // The current available FPURestriction values are None (no - // restriction), D16 (only 16 d-regs) and SP_D16 (16 d-regs - // and single precision only); there's no value representing - // SP restriction without D16. So this test just means 'is it - // SP only?'. - if (InputFPU.Restriction != ARM::FPURestriction::SP_D16) - return ARM::FK_INVALID; - - // Otherwise, look for an FPU entry with all the same fields, except - // that SP_D16 has been replaced with just D16, representing adding - // double precision and not changing anything else. - for (const ARM::FPUName &CandidateFPU : ARM::FPUNames) { - if (CandidateFPU.FPUVer == InputFPU.FPUVer && - CandidateFPU.NeonSupport == InputFPU.NeonSupport && - CandidateFPU.Restriction == ARM::FPURestriction::D16) { - return CandidateFPU.ID; - } - } - - // nothing found - return ARM::FK_INVALID; -} - -static unsigned getAEKID(StringRef ArchExtName) { - for (const auto AE : ARM::ARCHExtNames) - if (AE.getName() == ArchExtName) - return AE.ID; - return ARM::AEK_INVALID; -} - -bool ARM::appendArchExtFeatures( - StringRef CPU, ARM::ArchKind AK, StringRef ArchExt, - std::vector<StringRef> &Features) { - - size_t StartingNumFeatures = Features.size(); - const bool Negated = stripNegationPrefix(ArchExt); - unsigned ID = getAEKID(ArchExt); - - if (ID == AEK_INVALID) - return false; - - for (const auto AE : ARCHExtNames) { - if (Negated && (AE.ID & ID) == ID && AE.NegFeature) - Features.push_back(AE.NegFeature); - else if (AE.ID == ID && AE.Feature) - Features.push_back(AE.Feature); - } - - if (CPU == "") - CPU = "generic"; - - if (ArchExt == "fp" || ArchExt == "fp.dp") { - unsigned FPUKind; - if (ArchExt == "fp.dp") { - if (Negated) { - Features.push_back("-fp64"); - return true; - } - FPUKind = findDoublePrecisionFPU(getDefaultFPU(CPU, AK)); - } else if (Negated) { - FPUKind = ARM::FK_NONE; - } else { - FPUKind = getDefaultFPU(CPU, AK); - } - return ARM::getFPUFeatures(FPUKind, Features); - } - return StartingNumFeatures != Features.size(); -} - -StringRef ARM::getHWDivName(unsigned HWDivKind) { - for (const auto D : HWDivNames) { - if (HWDivKind == D.ID) - return D.getName(); - } - return StringRef(); -} - -StringRef ARM::getDefaultCPU(StringRef Arch) { - ArchKind AK = parseArch(Arch); - if (AK == ArchKind::INVALID) - return StringRef(); - - // Look for multiple AKs to find the default for pair AK+Name. - for (const auto CPU : CPUNames) { - if (CPU.ArchID == AK && CPU.Default) - return CPU.getName(); - } - - // If we can't find a default then target the architecture instead - return "generic"; -} - -unsigned ARM::parseHWDiv(StringRef HWDiv) { - StringRef Syn = getHWDivSynonym(HWDiv); - for (const auto D : HWDivNames) { - if (Syn == D.getName()) - return D.ID; - } - return AEK_INVALID; -} - -unsigned ARM::parseArchExt(StringRef ArchExt) { - for (const auto A : ARCHExtNames) { - if (ArchExt == A.getName()) - return A.ID; - } - return AEK_INVALID; -} - -ARM::ArchKind ARM::parseCPUArch(StringRef CPU) { - for (const auto C : CPUNames) { - if (CPU == C.getName()) - return C.ArchID; - } - return ArchKind::INVALID; -} - -void ARM::fillValidCPUArchList(SmallVectorImpl<StringRef> &Values) { - for (const CpuNames<ArchKind> &Arch : CPUNames) { - if (Arch.ArchID != ArchKind::INVALID) - Values.push_back(Arch.getName()); - } -} - -StringRef ARM::computeDefaultTargetABI(const Triple &TT, StringRef CPU) { - StringRef ArchName = - CPU.empty() ? TT.getArchName() : getArchName(parseCPUArch(CPU)); - - if (TT.isOSBinFormatMachO()) { - if (TT.getEnvironment() == Triple::EABI || - TT.getOS() == Triple::UnknownOS || - parseArchProfile(ArchName) == ProfileKind::M) - return "aapcs"; - if (TT.isWatchABI()) - return "aapcs16"; - return "apcs-gnu"; - } else if (TT.isOSWindows()) - // FIXME: this is invalid for WindowsCE. - return "aapcs"; - - // Select the default based on the platform. - switch (TT.getEnvironment()) { - case Triple::Android: - case Triple::GNUEABI: - case Triple::GNUEABIHF: - case Triple::MuslEABI: - case Triple::MuslEABIHF: - return "aapcs-linux"; - case Triple::EABIHF: - case Triple::EABI: - return "aapcs"; - default: - if (TT.isOSNetBSD()) - return "apcs-gnu"; - if (TT.isOSOpenBSD()) - return "aapcs-linux"; - return "aapcs"; - } -} |