1 //===--- AMDGPU.h - 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 #ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_AMDGPU_H 10 #define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_AMDGPU_H 11 12 #include "Gnu.h" 13 #include "ROCm.h" 14 #include "clang/Basic/TargetID.h" 15 #include "clang/Driver/Options.h" 16 #include "clang/Driver/Tool.h" 17 #include "clang/Driver/ToolChain.h" 18 #include "llvm/ADT/SmallString.h" 19 #include "llvm/Support/TargetParser.h" 20 21 #include <map> 22 23 namespace clang { 24 namespace driver { 25 26 namespace tools { 27 namespace amdgpu { 28 29 class LLVM_LIBRARY_VISIBILITY Linker : public Tool { 30 public: 31 Linker(const ToolChain &TC) : Tool("amdgpu::Linker", "ld.lld", TC) {} 32 bool isLinkJob() const override { return true; } 33 bool hasIntegratedCPP() const override { return false; } 34 void ConstructJob(Compilation &C, const JobAction &JA, 35 const InputInfo &Output, const InputInfoList &Inputs, 36 const llvm::opt::ArgList &TCArgs, 37 const char *LinkingOutput) const override; 38 }; 39 40 void getAMDGPUTargetFeatures(const Driver &D, const llvm::Triple &Triple, 41 const llvm::opt::ArgList &Args, 42 std::vector<StringRef> &Features); 43 44 } // end namespace amdgpu 45 } // end namespace tools 46 47 namespace toolchains { 48 49 class LLVM_LIBRARY_VISIBILITY AMDGPUToolChain : public Generic_ELF { 50 protected: 51 const std::map<options::ID, const StringRef> OptionsDefault; 52 53 Tool *buildLinker() const override; 54 const StringRef getOptionDefault(options::ID OptID) const { 55 auto opt = OptionsDefault.find(OptID); 56 assert(opt != OptionsDefault.end() && "No Default for Option"); 57 return opt->second; 58 } 59 60 public: 61 AMDGPUToolChain(const Driver &D, const llvm::Triple &Triple, 62 const llvm::opt::ArgList &Args); 63 unsigned GetDefaultDwarfVersion() const override { return 4; } 64 bool IsIntegratedAssemblerDefault() const override { return true; } 65 bool IsMathErrnoDefault() const override { return false; } 66 67 llvm::opt::DerivedArgList * 68 TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, 69 Action::OffloadKind DeviceOffloadKind) const override; 70 71 void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, 72 llvm::opt::ArgStringList &CC1Args, 73 Action::OffloadKind DeviceOffloadKind) const override; 74 75 /// Return whether denormals should be flushed, and treated as 0 by default 76 /// for the subtarget. 77 static bool getDefaultDenormsAreZeroForTarget(llvm::AMDGPU::GPUKind GPUKind); 78 79 llvm::DenormalMode getDefaultDenormalModeForType( 80 const llvm::opt::ArgList &DriverArgs, const JobAction &JA, 81 const llvm::fltSemantics *FPType = nullptr) const override; 82 83 static bool isWave64(const llvm::opt::ArgList &DriverArgs, 84 llvm::AMDGPU::GPUKind Kind); 85 /// Needed for using lto. 86 bool HasNativeLLVMSupport() const override { 87 return true; 88 } 89 90 /// Needed for translating LTO options. 91 const char *getDefaultLinker() const override { return "ld.lld"; } 92 93 /// Should skip argument. 94 bool shouldSkipArgument(const llvm::opt::Arg *Arg) const; 95 96 protected: 97 /// Check and diagnose invalid target ID specified by -mcpu. 98 void checkTargetID(const llvm::opt::ArgList &DriverArgs) const; 99 100 /// Get GPU arch from -mcpu without checking. 101 StringRef getGPUArch(const llvm::opt::ArgList &DriverArgs) const; 102 }; 103 104 class LLVM_LIBRARY_VISIBILITY ROCMToolChain : public AMDGPUToolChain { 105 public: 106 ROCMToolChain(const Driver &D, const llvm::Triple &Triple, 107 const llvm::opt::ArgList &Args); 108 void 109 addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, 110 llvm::opt::ArgStringList &CC1Args, 111 Action::OffloadKind DeviceOffloadKind) const override; 112 }; 113 114 } // end namespace toolchains 115 } // end namespace driver 116 } // end namespace clang 117 118 #endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_AMDGPU_H 119