diff options
Diffstat (limited to 'lib/Driver/ToolChains/Arch/AArch64.cpp')
| -rw-r--r-- | lib/Driver/ToolChains/Arch/AArch64.cpp | 185 |
1 files changed, 175 insertions, 10 deletions
diff --git a/lib/Driver/ToolChains/Arch/AArch64.cpp b/lib/Driver/ToolChains/Arch/AArch64.cpp index 5114279b4b45..71e55fe79e27 100644 --- a/lib/Driver/ToolChains/Arch/AArch64.cpp +++ b/lib/Driver/ToolChains/Arch/AArch64.cpp @@ -19,10 +19,17 @@ 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, Arg *&A) { +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))) { @@ -36,9 +43,9 @@ std::string aarch64::getAArch64TargetCPU(const ArgList &Args, Arg *&A) { else if (CPU.size()) return CPU; - // Make sure we pick "cyclone" if -arch is used. - // FIXME: Should this be picked by checking the target triple instead? - if (Args.getLastArg(options::OPT_arch)) + // Make sure we pick "cyclone" if -arch is used or when targetting a Darwin + // OS. + if (Args.getLastArg(options::OPT_arch) || Triple.isOSDarwin()) return "cyclone"; return "generic"; @@ -152,7 +159,9 @@ getAArch64MicroArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu, return getAArch64MicroArchFeaturesFromMtune(D, CPU, Args, Features); } -void aarch64::getAArch64TargetFeatures(const Driver &D, const ArgList &Args, +void aarch64::getAArch64TargetFeatures(const Driver &D, + const llvm::Triple &Triple, + const ArgList &Args, std::vector<StringRef> &Features) { Arg *A; bool success = true; @@ -162,9 +171,9 @@ void aarch64::getAArch64TargetFeatures(const Driver &D, const ArgList &Args, 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)) - success = getAArch64ArchFeaturesFromMcpu(D, getAArch64TargetCPU(Args, A), - Args, Features); + else if (Args.hasArg(options::OPT_arch) || isCPUDeterminedByTriple(Triple)) + success = getAArch64ArchFeaturesFromMcpu( + D, getAArch64TargetCPU(Args, Triple, A), Args, Features); if (success && (A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ))) success = @@ -172,9 +181,10 @@ void aarch64::getAArch64TargetFeatures(const Driver &D, const ArgList &Args, 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)) + else if (success && + (Args.hasArg(options::OPT_arch) || isCPUDeterminedByTriple(Triple))) success = getAArch64MicroArchFeaturesFromMcpu( - D, getAArch64TargetCPU(Args, A), Args, Features); + D, getAArch64TargetCPU(Args, Triple, A), Args, Features); if (!success) D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args); @@ -193,17 +203,172 @@ void aarch64::getAArch64TargetFeatures(const Driver &D, const ArgList &Args, Features.push_back("-crc"); } + // Handle (arch-dependent) fp16fml/fullfp16 relationship. + // FIXME: this fp16fml option handling will be reimplemented after the + // TargetParser rewrite. + const auto ItRNoFullFP16 = std::find(Features.rbegin(), Features.rend(), "-fullfp16"); + const auto ItRFP16FML = std::find(Features.rbegin(), Features.rend(), "+fp16fml"); + if (std::find(Features.begin(), Features.end(), "+v8.4a") != Features.end()) { + const auto ItRFullFP16 = std::find(Features.rbegin(), Features.rend(), "+fullfp16"); + if (ItRFullFP16 < ItRNoFullFP16 && ItRFullFP16 < ItRFP16FML) { + // 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. + if (std::find(Features.rbegin(), ItRFullFP16, "-fp16fml") == ItRFullFP16) + 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. + if (ItRNoFullFP16 < ItRFP16FML) + Features.push_back("-fp16fml"); + else if (ItRNoFullFP16 > ItRFP16FML) + 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 + const auto ItBegin = Features.begin(); + const auto ItEnd = Features.end(); + const auto ItRBegin = Features.rbegin(); + const auto ItREnd = Features.rend(); + const auto ItRCrypto = std::find(ItRBegin, ItREnd, "+crypto"); + const auto ItRNoCrypto = std::find(ItRBegin, ItREnd, "-crypto"); + const auto HasCrypto = ItRCrypto != ItREnd; + const auto HasNoCrypto = ItRNoCrypto != ItREnd; + const ptrdiff_t PosCrypto = ItRCrypto - ItRBegin; + const ptrdiff_t PosNoCrypto = ItRNoCrypto - ItRBegin; + + bool NoCrypto = false; + if (HasCrypto && HasNoCrypto) { + if (PosNoCrypto < PosCrypto) + NoCrypto = true; + } + + if (std::find(ItBegin, ItEnd, "+v8.4a") != ItEnd) { + if (HasCrypto && !NoCrypto) { + // Check if we have NOT disabled an algorithm with something like: + // +crypto, -algorithm + // And if "-algorithm" does not occur, we enable that crypto algorithm. + const bool HasSM4 = (std::find(ItBegin, ItEnd, "-sm4") == ItEnd); + const bool HasSHA3 = (std::find(ItBegin, ItEnd, "-sha3") == ItEnd); + const bool HasSHA2 = (std::find(ItBegin, ItEnd, "-sha2") == ItEnd); + const bool HasAES = (std::find(ItBegin, ItEnd, "-aes") == ItEnd); + 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 (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. + const bool HasSM4 = (std::find(ItBegin, ItEnd, "+sm4") != ItEnd); + const bool HasSHA3 = (std::find(ItBegin, ItEnd, "+sha3") != ItEnd); + const bool HasSHA2 = (std::find(ItBegin, ItEnd, "+sha2") != ItEnd); + const bool HasAES = (std::find(ItBegin, ItEnd, "+aes") != ItEnd); + 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 && !NoCrypto) { + const bool HasSHA2 = (std::find(ItBegin, ItEnd, "-sha2") == ItEnd); + const bool HasAES = (std::find(ItBegin, ItEnd, "-aes") == ItEnd); + if (HasSHA2) + Features.push_back("+sha2"); + if (HasAES) + Features.push_back("+aes"); + } else if (HasNoCrypto) { + const bool HasSHA2 = (std::find(ItBegin, ItEnd, "+sha2") != ItEnd); + const bool HasAES = (std::find(ItBegin, ItEnd, "+aes") != ItEnd); + const bool HasV82a = (std::find(ItBegin, ItEnd, "+v8.2a") != ItEnd); + const bool HasV83a = (std::find(ItBegin, ItEnd, "+v8.3a") != ItEnd); + const bool HasV84a = (std::find(ItBegin, ItEnd, "+v8.4a") != ItEnd); + if (!HasSHA2) + Features.push_back("-sha2"); + if (!HasAES) + Features.push_back("-aes"); + if (HasV82a || HasV83a || HasV84a) { + 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"); + 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_x18)) Features.push_back("+reserve-x18"); if (Args.hasArg(options::OPT_ffixed_x20)) Features.push_back("+reserve-x20"); + 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"); } |