1 //===--- AMDGPU.cpp - AMDGPU ToolChain Implementations ----------*- 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 "AMDGPU.h" 10 #include "CommonArgs.h" 11 #include "InputInfo.h" 12 #include "clang/Driver/Compilation.h" 13 #include "clang/Driver/DriverDiagnostic.h" 14 #include "llvm/Option/ArgList.h" 15 16 using namespace clang::driver; 17 using namespace clang::driver::tools; 18 using namespace clang::driver::toolchains; 19 using namespace clang; 20 using namespace llvm::opt; 21 22 void amdgpu::Linker::ConstructJob(Compilation &C, const JobAction &JA, 23 const InputInfo &Output, 24 const InputInfoList &Inputs, 25 const ArgList &Args, 26 const char *LinkingOutput) const { 27 28 std::string Linker = getToolChain().GetProgramPath(getShortName()); 29 ArgStringList CmdArgs; 30 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA); 31 CmdArgs.push_back("-shared"); 32 CmdArgs.push_back("-o"); 33 CmdArgs.push_back(Output.getFilename()); 34 C.addCommand(std::make_unique<Command>(JA, *this, Args.MakeArgString(Linker), 35 CmdArgs, Inputs)); 36 } 37 38 void amdgpu::getAMDGPUTargetFeatures(const Driver &D, 39 const llvm::opt::ArgList &Args, 40 std::vector<StringRef> &Features) { 41 if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi)) 42 D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args); 43 44 if (Args.getLastArg(options::OPT_mwavefrontsize64)) { 45 Features.push_back("-wavefrontsize16"); 46 Features.push_back("-wavefrontsize32"); 47 Features.push_back("+wavefrontsize64"); 48 } 49 if (Args.getLastArg(options::OPT_mno_wavefrontsize64)) { 50 Features.push_back("-wavefrontsize16"); 51 Features.push_back("+wavefrontsize32"); 52 Features.push_back("-wavefrontsize64"); 53 } 54 55 handleTargetFeaturesGroup( 56 Args, Features, options::OPT_m_amdgpu_Features_Group); 57 } 58 59 /// AMDGPU Toolchain 60 AMDGPUToolChain::AMDGPUToolChain(const Driver &D, const llvm::Triple &Triple, 61 const ArgList &Args) 62 : Generic_ELF(D, Triple, Args), 63 OptionsDefault({{options::OPT_O, "3"}, 64 {options::OPT_cl_std_EQ, "CL1.2"}}) {} 65 66 Tool *AMDGPUToolChain::buildLinker() const { 67 return new tools::amdgpu::Linker(*this); 68 } 69 70 DerivedArgList * 71 AMDGPUToolChain::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch, 72 Action::OffloadKind DeviceOffloadKind) const { 73 74 DerivedArgList *DAL = 75 Generic_ELF::TranslateArgs(Args, BoundArch, DeviceOffloadKind); 76 77 // Do nothing if not OpenCL (-x cl) 78 if (!Args.getLastArgValue(options::OPT_x).equals("cl")) 79 return DAL; 80 81 if (!DAL) 82 DAL = new DerivedArgList(Args.getBaseArgs()); 83 for (auto *A : Args) 84 DAL->append(A); 85 86 const OptTable &Opts = getDriver().getOpts(); 87 88 // Phase 1 (.cl -> .bc) 89 if (Args.hasArg(options::OPT_c) && Args.hasArg(options::OPT_emit_llvm)) { 90 DAL->AddFlagArg(nullptr, Opts.getOption(getTriple().isArch64Bit() 91 ? options::OPT_m64 92 : options::OPT_m32)); 93 94 // Have to check OPT_O4, OPT_O0 & OPT_Ofast separately 95 // as they defined that way in Options.td 96 if (!Args.hasArg(options::OPT_O, options::OPT_O0, options::OPT_O4, 97 options::OPT_Ofast)) 98 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_O), 99 getOptionDefault(options::OPT_O)); 100 } 101 102 return DAL; 103 } 104 105 void AMDGPUToolChain::addClangTargetOptions( 106 const llvm::opt::ArgList &DriverArgs, 107 llvm::opt::ArgStringList &CC1Args, 108 Action::OffloadKind DeviceOffloadingKind) const { 109 // Default to "hidden" visibility, as object level linking will not be 110 // supported for the foreseeable future. 111 if (!DriverArgs.hasArg(options::OPT_fvisibility_EQ, 112 options::OPT_fvisibility_ms_compat)) { 113 CC1Args.push_back("-fvisibility"); 114 CC1Args.push_back("hidden"); 115 CC1Args.push_back("-fapply-global-visibility-to-externs"); 116 } 117 } 118