1 //===--- SystemZ.cpp - SystemZ Helpers for Tools ----------------*- 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 #include "SystemZ.h" 10 #include "clang/Config/config.h" 11 #include "clang/Driver/DriverDiagnostic.h" 12 #include "clang/Driver/Options.h" 13 #include "llvm/Option/ArgList.h" 14 #include "llvm/Support/Host.h" 15 16 using namespace clang::driver; 17 using namespace clang::driver::tools; 18 using namespace clang; 19 using namespace llvm::opt; 20 21 systemz::FloatABI systemz::getSystemZFloatABI(const Driver &D, 22 const ArgList &Args) { 23 // Hard float is the default. 24 systemz::FloatABI ABI = systemz::FloatABI::Hard; 25 if (Args.hasArg(options::OPT_mfloat_abi_EQ)) 26 D.Diag(diag::err_drv_unsupported_opt) 27 << Args.getLastArg(options::OPT_mfloat_abi_EQ)->getAsString(Args); 28 29 if (Arg *A = Args.getLastArg(clang::driver::options::OPT_msoft_float, 30 options::OPT_mhard_float)) 31 if (A->getOption().matches(clang::driver::options::OPT_msoft_float)) 32 ABI = systemz::FloatABI::Soft; 33 34 return ABI; 35 } 36 37 std::string systemz::getSystemZTargetCPU(const ArgList &Args) { 38 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ)) { 39 llvm::StringRef CPUName = A->getValue(); 40 41 if (CPUName == "native") { 42 std::string CPU = std::string(llvm::sys::getHostCPUName()); 43 if (!CPU.empty() && CPU != "generic") 44 return CPU; 45 else 46 return ""; 47 } 48 49 return std::string(CPUName); 50 } 51 return CLANG_SYSTEMZ_DEFAULT_ARCH; 52 } 53 54 void systemz::getSystemZTargetFeatures(const Driver &D, const ArgList &Args, 55 std::vector<llvm::StringRef> &Features) { 56 // -m(no-)htm overrides use of the transactional-execution facility. 57 if (Arg *A = Args.getLastArg(options::OPT_mhtm, options::OPT_mno_htm)) { 58 if (A->getOption().matches(options::OPT_mhtm)) 59 Features.push_back("+transactional-execution"); 60 else 61 Features.push_back("-transactional-execution"); 62 } 63 // -m(no-)vx overrides use of the vector facility. 64 if (Arg *A = Args.getLastArg(options::OPT_mvx, options::OPT_mno_vx)) { 65 if (A->getOption().matches(options::OPT_mvx)) 66 Features.push_back("+vector"); 67 else 68 Features.push_back("-vector"); 69 } 70 71 systemz::FloatABI FloatABI = systemz::getSystemZFloatABI(D, Args); 72 if (FloatABI == systemz::FloatABI::Soft) 73 Features.push_back("+soft-float"); 74 } 75