| //===--- AArch64.cpp - AArch64 (not ARM) Helpers for Tools ------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "AArch64.h" |
| #include "../CommonArgs.h" |
| #include "clang/Driver/Driver.h" |
| #include "clang/Driver/DriverDiagnostic.h" |
| #include "clang/Driver/Options.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/Support/AArch64TargetParser.h" |
| #include "llvm/Support/TargetParser.h" |
| #include "llvm/Support/Host.h" |
| |
| using namespace clang::driver; |
| using namespace clang::driver::tools; |
| using namespace clang; |
| using namespace llvm::opt; |
| |
| /// \returns true if the given triple can determine the default CPU type even |
| /// if -arch is not specified. |
| static bool isCPUDeterminedByTriple(const llvm::Triple &Triple) { |
| return Triple.isOSDarwin(); |
| } |
| |
| /// getAArch64TargetCPU - Get the (LLVM) name of the AArch64 cpu we are |
| /// targeting. Set \p A to the Arg corresponding to the -mcpu argument if it is |
| /// provided, or to nullptr otherwise. |
| std::string aarch64::getAArch64TargetCPU(const ArgList &Args, |
| const llvm::Triple &Triple, Arg *&A) { |
| std::string CPU; |
| // If we have -mcpu, use that. |
| if ((A = Args.getLastArg(options::OPT_mcpu_EQ))) { |
| StringRef Mcpu = A->getValue(); |
| CPU = Mcpu.split("+").first.lower(); |
| } |
| |
| CPU = llvm::AArch64::resolveCPUAlias(CPU); |
| |
| // Handle CPU name is 'native'. |
| if (CPU == "native") |
| return std::string(llvm::sys::getHostCPUName()); |
| |
| if (CPU.size()) |
| return CPU; |
| |
| if (Triple.isTargetMachineMac() && |
| Triple.getArch() == llvm::Triple::aarch64) { |
| // Apple Silicon macs default to M1 CPUs. |
| return "apple-m1"; |
| } |
| |
| // arm64e requires v8.3a and only runs on apple-a12 and later CPUs. |
| if (Triple.isArm64e()) |
| return "apple-a12"; |
| |
| // Make sure we pick the appropriate Apple CPU if -arch is used or when |
| // targetting a Darwin OS. |
| if (Args.getLastArg(options::OPT_arch) || Triple.isOSDarwin()) |
| return Triple.getArch() == llvm::Triple::aarch64_32 ? "apple-s4" |
| : "apple-a7"; |
| |
| return "generic"; |
| } |
| |
| // Decode AArch64 features from string like +[no]featureA+[no]featureB+... |
| static bool DecodeAArch64Features(const Driver &D, StringRef text, |
| std::vector<StringRef> &Features, |
| const llvm::AArch64::ArchInfo &ArchInfo) { |
| SmallVector<StringRef, 8> Split; |
| text.split(Split, StringRef("+"), -1, false); |
| |
| for (StringRef Feature : Split) { |
| StringRef FeatureName = llvm::AArch64::getArchExtFeature(Feature); |
| if (!FeatureName.empty()) |
| Features.push_back(FeatureName); |
| else if (Feature == "neon" || Feature == "noneon") |
| D.Diag(clang::diag::err_drv_no_neon_modifier); |
| else |
| return false; |
| |
| if (Feature == "sve2") |
| Features.push_back("+sve"); |
| else if (Feature == "sve2-bitperm" || Feature == "sve2-sha3" || |
| Feature == "sve2-aes" || Feature == "sve2-sm4") { |
| Features.push_back("+sve"); |
| Features.push_back("+sve2"); |
| } else if (Feature == "nosve") { |
| Features.push_back("-sve2"); |
| Features.push_back("-sve2-bitperm"); |
| Features.push_back("-sve2-sha3"); |
| Features.push_back("-sve2-aes"); |
| Features.push_back("-sve2-sm4"); |
| } else if (Feature == "nosve2") { |
| Features.push_back("-sve2-bitperm"); |
| Features.push_back("-sve2-sha3"); |
| Features.push_back("-sve2-aes"); |
| Features.push_back("-sve2-sm4"); |
| } |
| |
| // +sve implies +f32mm if the base architecture is >= v8.6A (except v9A) |
| // It isn't the case in general that sve implies both f64mm and f32mm |
| if ((ArchInfo == llvm::AArch64::ARMV8_6A || |
| ArchInfo == llvm::AArch64::ARMV8_7A || |
| ArchInfo == llvm::AArch64::ARMV8_8A || |
| ArchInfo == llvm::AArch64::ARMV8_9A || |
| ArchInfo == llvm::AArch64::ARMV9_1A || |
| ArchInfo == llvm::AArch64::ARMV9_2A || |
| ArchInfo == llvm::AArch64::ARMV9_3A || |
| ArchInfo == llvm::AArch64::ARMV9_4A) && |
| Feature == "sve") |
| Features.push_back("+f32mm"); |
| } |
| return true; |
| } |
| |
| // Check if the CPU name and feature modifiers in -mcpu are legal. If yes, |
| // decode CPU and feature. |
| static bool DecodeAArch64Mcpu(const Driver &D, StringRef Mcpu, StringRef &CPU, |
| std::vector<StringRef> &Features) { |
| std::pair<StringRef, StringRef> Split = Mcpu.split("+"); |
| const llvm::AArch64::ArchInfo *ArchInfo = &llvm::AArch64::ARMV8A; |
| CPU = llvm::AArch64::resolveCPUAlias(Split.first); |
| |
| if (CPU == "native") |
| CPU = llvm::sys::getHostCPUName(); |
| |
| if (CPU == "generic") { |
| Features.push_back("+neon"); |
| } else { |
| ArchInfo = &llvm::AArch64::parseCpu(CPU).Arch; |
| if (*ArchInfo == llvm::AArch64::INVALID) |
| return false; |
| Features.push_back(ArchInfo->ArchFeature); |
| |
| uint64_t Extension = llvm::AArch64::getDefaultExtensions(CPU, *ArchInfo); |
| if (!llvm::AArch64::getExtensionFeatures(Extension, Features)) |
| return false; |
| } |
| |
| if (Split.second.size() && |
| !DecodeAArch64Features(D, Split.second, Features, *ArchInfo)) |
| return false; |
| |
| return true; |
| } |
| |
| static bool |
| getAArch64ArchFeaturesFromMarch(const Driver &D, StringRef March, |
| const ArgList &Args, |
| std::vector<StringRef> &Features) { |
| std::string MarchLowerCase = March.lower(); |
| std::pair<StringRef, StringRef> Split = StringRef(MarchLowerCase).split("+"); |
| |
| const llvm::AArch64::ArchInfo *ArchInfo = |
| &llvm::AArch64::parseArch(Split.first); |
| if (Split.first == "native") |
| ArchInfo = &llvm::AArch64::getArchForCpu(llvm::sys::getHostCPUName().str()); |
| if (*ArchInfo == llvm::AArch64::INVALID) |
| return false; |
| Features.push_back(ArchInfo->ArchFeature); |
| |
| // Enable SVE2 by default on Armv9-A. |
| // It can still be disabled if +nosve2 is present. |
| // We must do this early so that DecodeAArch64Features has the correct state |
| if ((*ArchInfo == llvm::AArch64::ARMV9A || |
| *ArchInfo == llvm::AArch64::ARMV9_1A || |
| *ArchInfo == llvm::AArch64::ARMV9_2A)) { |
| Features.push_back("+sve"); |
| Features.push_back("+sve2"); |
| } |
| |
| if ((Split.second.size() && |
| !DecodeAArch64Features(D, Split.second, Features, *ArchInfo))) |
| return false; |
| |
| return true; |
| } |
| |
| static bool |
| getAArch64ArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu, |
| const ArgList &Args, |
| std::vector<StringRef> &Features) { |
| StringRef CPU; |
| std::string McpuLowerCase = Mcpu.lower(); |
| if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, Features)) |
| return false; |
| |
| return true; |
| } |
| |
| static bool |
| getAArch64MicroArchFeaturesFromMtune(const Driver &D, StringRef Mtune, |
| const ArgList &Args, |
| std::vector<StringRef> &Features) { |
| std::string MtuneLowerCase = Mtune.lower(); |
| // Check CPU name is valid |
| std::vector<StringRef> MtuneFeatures; |
| StringRef Tune; |
| if (!DecodeAArch64Mcpu(D, MtuneLowerCase, Tune, MtuneFeatures)) |
| return false; |
| |
| // Handle CPU name is 'native'. |
| if (MtuneLowerCase == "native") |
| MtuneLowerCase = std::string(llvm::sys::getHostCPUName()); |
| if (MtuneLowerCase == "cyclone" || |
| StringRef(MtuneLowerCase).startswith("apple")) { |
| Features.push_back("+zcm"); |
| Features.push_back("+zcz"); |
| } |
| return true; |
| } |
| |
| static bool |
| getAArch64MicroArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu, |
| const ArgList &Args, |
| std::vector<StringRef> &Features) { |
| StringRef CPU; |
| std::vector<StringRef> DecodedFeature; |
| std::string McpuLowerCase = Mcpu.lower(); |
| if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, DecodedFeature)) |
| return false; |
| |
| return getAArch64MicroArchFeaturesFromMtune(D, CPU, Args, Features); |
| } |
| |
| void aarch64::getAArch64TargetFeatures(const Driver &D, |
| const llvm::Triple &Triple, |
| const ArgList &Args, |
| std::vector<StringRef> &Features, |
| bool ForAS) { |
| Arg *A; |
| bool success = true; |
| // Enable NEON by default. |
| Features.push_back("+neon"); |
| llvm::StringRef WaMArch; |
| if (ForAS) |
| for (const auto *A : |
| Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) |
| for (StringRef Value : A->getValues()) |
| if (Value.startswith("-march=")) |
| WaMArch = Value.substr(7); |
| // Call getAArch64ArchFeaturesFromMarch only if "-Wa,-march=" or |
| // "-Xassembler -march" is detected. Otherwise it may return false |
| // and causes Clang to error out. |
| if (!WaMArch.empty()) |
| success = getAArch64ArchFeaturesFromMarch(D, WaMArch, Args, Features); |
| else if ((A = Args.getLastArg(options::OPT_march_EQ))) |
| success = getAArch64ArchFeaturesFromMarch(D, A->getValue(), Args, Features); |
| else if ((A = Args.getLastArg(options::OPT_mcpu_EQ))) |
| success = getAArch64ArchFeaturesFromMcpu(D, A->getValue(), Args, Features); |
| else if (Args.hasArg(options::OPT_arch) || isCPUDeterminedByTriple(Triple)) |
| success = getAArch64ArchFeaturesFromMcpu( |
| D, getAArch64TargetCPU(Args, Triple, A), Args, Features); |
| else |
| // Default to 'A' profile if the architecture is not specified. |
| success = getAArch64ArchFeaturesFromMarch(D, "armv8-a", Args, Features); |
| |
| if (success && (A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ))) |
| success = |
| getAArch64MicroArchFeaturesFromMtune(D, A->getValue(), Args, Features); |
| else if (success && (A = Args.getLastArg(options::OPT_mcpu_EQ))) |
| success = |
| getAArch64MicroArchFeaturesFromMcpu(D, A->getValue(), Args, Features); |
| else if (success && |
| (Args.hasArg(options::OPT_arch) || isCPUDeterminedByTriple(Triple))) |
| success = getAArch64MicroArchFeaturesFromMcpu( |
| D, getAArch64TargetCPU(Args, Triple, A), Args, Features); |
| |
| if (!success) { |
| auto Diag = D.Diag(diag::err_drv_unsupported_option_argument); |
| // If "-Wa,-march=" is used, 'WaMArch' will contain the argument's value, |
| // while 'A' is uninitialized. Only dereference 'A' in the other case. |
| if (!WaMArch.empty()) |
| Diag << "-march=" << WaMArch; |
| else |
| Diag << A->getSpelling() << A->getValue(); |
| } |
| |
| if (Args.getLastArg(options::OPT_mgeneral_regs_only)) { |
| Features.push_back("-fp-armv8"); |
| Features.push_back("-crypto"); |
| Features.push_back("-neon"); |
| } |
| |
| if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) { |
| StringRef Mtp = A->getValue(); |
| if (Mtp == "el3") |
| Features.push_back("+tpidr-el3"); |
| else if (Mtp == "el2") |
| Features.push_back("+tpidr-el2"); |
| else if (Mtp == "el1") |
| Features.push_back("+tpidr-el1"); |
| else if (Mtp != "el0") |
| D.Diag(diag::err_drv_invalid_mtp) << A->getAsString(Args); |
| } |
| |
| // Enable/disable straight line speculation hardening. |
| if (Arg *A = Args.getLastArg(options::OPT_mharden_sls_EQ)) { |
| StringRef Scope = A->getValue(); |
| bool EnableRetBr = false; |
| bool EnableBlr = false; |
| bool DisableComdat = false; |
| if (Scope != "none") { |
| SmallVector<StringRef, 4> Opts; |
| Scope.split(Opts, ","); |
| for (auto Opt : Opts) { |
| Opt = Opt.trim(); |
| if (Opt == "all") { |
| EnableBlr = true; |
| EnableRetBr = true; |
| continue; |
| } |
| if (Opt == "retbr") { |
| EnableRetBr = true; |
| continue; |
| } |
| if (Opt == "blr") { |
| EnableBlr = true; |
| continue; |
| } |
| if (Opt == "comdat") { |
| DisableComdat = false; |
| continue; |
| } |
| if (Opt == "nocomdat") { |
| DisableComdat = true; |
| continue; |
| } |
| D.Diag(diag::err_drv_unsupported_option_argument) |
| << A->getSpelling() << Scope; |
| break; |
| } |
| } |
| |
| if (EnableRetBr) |
| Features.push_back("+harden-sls-retbr"); |
| if (EnableBlr) |
| Features.push_back("+harden-sls-blr"); |
| if (DisableComdat) { |
| Features.push_back("+harden-sls-nocomdat"); |
| } |
| } |
| |
| // En/disable crc |
| if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) { |
| if (A->getOption().matches(options::OPT_mcrc)) |
| Features.push_back("+crc"); |
| else |
| Features.push_back("-crc"); |
| } |
| |
| int V8Version = -1; |
| int V9Version = -1; |
| bool HasNoSM4 = false; |
| bool HasNoSHA3 = false; |
| bool HasNoSHA2 = false; |
| bool HasNoAES = false; |
| bool HasSM4 = false; |
| bool HasSHA3 = false; |
| bool HasSHA2 = false; |
| bool HasAES = false; |
| bool HasCrypto = false; |
| bool HasNoCrypto = false; |
| int FullFP16Pos = -1; |
| int NoFullFP16Pos = -1; |
| int FP16FMLPos = -1; |
| int NoFP16FMLPos = -1; |
| int ArchFeatPos = -1; |
| |
| for (auto I = Features.begin(), E = Features.end(); I != E; I++) { |
| if (*I == "+v8a") V8Version = 0; |
| else if (*I == "+v8.1a") V8Version = 1; |
| else if (*I == "+v8.2a") V8Version = 2; |
| else if (*I == "+v8.3a") V8Version = 3; |
| else if (*I == "+v8.4a") V8Version = 4; |
| else if (*I == "+v8.5a") V8Version = 5; |
| else if (*I == "+v8.6a") V8Version = 6; |
| else if (*I == "+v8.7a") V8Version = 7; |
| else if (*I == "+v8.8a") V8Version = 8; |
| else if (*I == "+v8.9a") V8Version = 9; |
| else if (*I == "+v9a") V9Version = 0; |
| else if (*I == "+v9.1a") V9Version = 1; |
| else if (*I == "+v9.2a") V9Version = 2; |
| else if (*I == "+v9.3a") V9Version = 3; |
| else if (*I == "+v9.4a") V9Version = 4; |
| else if (*I == "+sm4") HasSM4 = true; |
| else if (*I == "+sha3") HasSHA3 = true; |
| else if (*I == "+sha2") HasSHA2 = true; |
| else if (*I == "+aes") HasAES = true; |
| else if (*I == "-sm4") HasNoSM4 = true; |
| else if (*I == "-sha3") HasNoSHA3 = true; |
| else if (*I == "-sha2") HasNoSHA2 = true; |
| else if (*I == "-aes") HasNoAES = true; |
| else if (*I == "+fp16fml") FP16FMLPos = I - Features.begin(); |
| else if (*I == "-fp16fml") NoFP16FMLPos = I - Features.begin(); |
| else if (*I == "-fullfp16") NoFullFP16Pos = I - Features.begin(); |
| else if (*I == "+fullfp16") FullFP16Pos = I - Features.begin(); |
| // Whichever option comes after (right-most option) will win |
| else if (*I == "+crypto") { |
| HasCrypto = true; |
| HasNoCrypto = false; |
| } else if (*I == "-crypto") { |
| HasCrypto = false; |
| HasNoCrypto = true; |
| } |
| // Register the iterator position if this is an architecture feature |
| if (ArchFeatPos == -1 && (V8Version != -1 || V9Version != -1)) |
| ArchFeatPos = I - Features.begin(); |
| } |
| |
| // Handle (arch-dependent) fp16fml/fullfp16 relationship. |
| // FIXME: this fp16fml option handling will be reimplemented after the |
| // TargetParser rewrite. |
| if (V8Version >= 4) { |
| // "-fullfp16" "+fullfp16" && "+fp16fml" "+fullfp16" && no "+fullfp16" "-fp16fml" = "+fp16fml" |
| if (FullFP16Pos > NoFullFP16Pos && FullFP16Pos > FP16FMLPos && FullFP16Pos > NoFP16FMLPos) |
| // Only entangled feature that can be to the right of this +fullfp16 is -fp16fml. |
| // Only append the +fp16fml if there is no -fp16fml after the +fullfp16. |
| Features.push_back("+fp16fml"); |
| else |
| goto fp16_fml_fallthrough; |
| } else { |
| fp16_fml_fallthrough: |
| // In both of these cases, putting the 'other' feature on the end of the vector will |
| // result in the same effect as placing it immediately after the current feature. |
| // "+fp16fml" "-fullfp16" = "-fp16fml" |
| if (NoFullFP16Pos > FP16FMLPos) |
| Features.push_back("-fp16fml"); |
| // "-fullfp16" "+fp16fml" = "+fullfp16" |
| else if (NoFullFP16Pos < FP16FMLPos) |
| Features.push_back("+fullfp16"); |
| } |
| |
| // FIXME: this needs reimplementation too after the TargetParser rewrite |
| // |
| // Context sensitive meaning of Crypto: |
| // 1) For Arch >= ARMv8.4a: crypto = sm4 + sha3 + sha2 + aes |
| // 2) For Arch <= ARMv8.3a: crypto = sha2 + aes |
| if (V8Version >= 4 || V9Version >= 0) { |
| if (HasCrypto && !HasNoCrypto) { |
| // Check if we have NOT disabled an algorithm with something like: |
| // +crypto, -algorithm |
| // And if "-algorithm" does not occur, we enable that crypto algorithm. |
| if (!HasNoSM4) |
| Features.push_back("+sm4"); |
| if (!HasNoSHA3) |
| Features.push_back("+sha3"); |
| if (!HasNoSHA2) |
| Features.push_back("+sha2"); |
| if (!HasNoAES) |
| Features.push_back("+aes"); |
| } else if (HasNoCrypto) { |
| // Check if we have NOT enabled a crypto algorithm with something like: |
| // -crypto, +algorithm |
| // And if "+algorithm" does not occur, we disable that crypto algorithm. |
| if (!HasSM4) |
| Features.push_back("-sm4"); |
| if (!HasSHA3) |
| Features.push_back("-sha3"); |
| if (!HasSHA2) |
| Features.push_back("-sha2"); |
| if (!HasAES) |
| Features.push_back("-aes"); |
| } |
| } else { |
| if (HasCrypto && !HasNoCrypto) { |
| if (!HasNoSHA2) |
| Features.push_back("+sha2"); |
| if (!HasNoAES) |
| Features.push_back("+aes"); |
| } else if (HasNoCrypto) { |
| if (!HasSHA2) |
| Features.push_back("-sha2"); |
| if (!HasAES) |
| Features.push_back("-aes"); |
| if (V8Version == 2 || V8Version == 3) { |
| Features.push_back("-sm4"); |
| Features.push_back("-sha3"); |
| } |
| } |
| } |
| |
| if (Arg *A = Args.getLastArg(options::OPT_mno_unaligned_access, |
| options::OPT_munaligned_access)) { |
| if (A->getOption().matches(options::OPT_mno_unaligned_access)) |
| Features.push_back("+strict-align"); |
| } else if (Triple.isOSOpenBSD()) |
| Features.push_back("+strict-align"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x1)) |
| Features.push_back("+reserve-x1"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x2)) |
| Features.push_back("+reserve-x2"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x3)) |
| Features.push_back("+reserve-x3"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x4)) |
| Features.push_back("+reserve-x4"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x5)) |
| Features.push_back("+reserve-x5"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x6)) |
| Features.push_back("+reserve-x6"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x7)) |
| Features.push_back("+reserve-x7"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x9)) |
| Features.push_back("+reserve-x9"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x10)) |
| Features.push_back("+reserve-x10"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x11)) |
| Features.push_back("+reserve-x11"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x12)) |
| Features.push_back("+reserve-x12"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x13)) |
| Features.push_back("+reserve-x13"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x14)) |
| Features.push_back("+reserve-x14"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x15)) |
| Features.push_back("+reserve-x15"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x18)) |
| Features.push_back("+reserve-x18"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x20)) |
| Features.push_back("+reserve-x20"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x21)) |
| Features.push_back("+reserve-x21"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x22)) |
| Features.push_back("+reserve-x22"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x23)) |
| Features.push_back("+reserve-x23"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x24)) |
| Features.push_back("+reserve-x24"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x25)) |
| Features.push_back("+reserve-x25"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x26)) |
| Features.push_back("+reserve-x26"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x27)) |
| Features.push_back("+reserve-x27"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x28)) |
| Features.push_back("+reserve-x28"); |
| |
| if (Args.hasArg(options::OPT_ffixed_x30)) |
| Features.push_back("+reserve-x30"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x8)) |
| Features.push_back("+call-saved-x8"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x9)) |
| Features.push_back("+call-saved-x9"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x10)) |
| Features.push_back("+call-saved-x10"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x11)) |
| Features.push_back("+call-saved-x11"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x12)) |
| Features.push_back("+call-saved-x12"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x13)) |
| Features.push_back("+call-saved-x13"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x14)) |
| Features.push_back("+call-saved-x14"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x15)) |
| Features.push_back("+call-saved-x15"); |
| |
| if (Args.hasArg(options::OPT_fcall_saved_x18)) |
| Features.push_back("+call-saved-x18"); |
| |
| if (Args.hasArg(options::OPT_mno_neg_immediates)) |
| Features.push_back("+no-neg-immediates"); |
| |
| if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769, |
| options::OPT_mno_fix_cortex_a53_835769)) { |
| if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769)) |
| Features.push_back("+fix-cortex-a53-835769"); |
| else |
| Features.push_back("-fix-cortex-a53-835769"); |
| } else if (Triple.isAndroid()) { |
| // Enabled A53 errata (835769) workaround by default on android |
| Features.push_back("+fix-cortex-a53-835769"); |
| } else if (Triple.isOSFuchsia()) { |
| std::string CPU = getCPUName(D, Args, Triple); |
| if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") |
| Features.push_back("+fix-cortex-a53-835769"); |
| } |
| |
| if (Args.getLastArg(options::OPT_mno_bti_at_return_twice)) |
| Features.push_back("+no-bti-at-return-twice"); |
| } |
