Coverage Report

Created: 2021-01-19 06:58

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Driver/ToolChains/Cuda.h
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//===--- Cuda.h - Cuda ToolChain Implementations ----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H
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#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H
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#include "clang/Basic/Cuda.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/Multilib.h"
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#include "clang/Driver/Tool.h"
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#include "clang/Driver/ToolChain.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/VersionTuple.h"
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#include <bitset>
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#include <set>
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#include <vector>
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namespace clang {
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namespace driver {
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/// A class to find a viable CUDA installation
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class CudaInstallationDetector {
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private:
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  const Driver &D;
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  bool IsValid = false;
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  CudaVersion Version = CudaVersion::UNKNOWN;
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  std::string DetectedVersion;
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  bool DetectedVersionIsNotSupported = false;
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  std::string InstallPath;
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  std::string BinPath;
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  std::string LibPath;
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  std::string LibDevicePath;
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  std::string IncludePath;
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  llvm::StringMap<std::string> LibDeviceMap;
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  // CUDA architectures for which we have raised an error in
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  // CheckCudaVersionSupportsArch.
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  mutable std::bitset<(int)CudaArch::LAST> ArchsWithBadVersion;
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public:
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  CudaInstallationDetector(const Driver &D, const llvm::Triple &HostTriple,
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                           const llvm::opt::ArgList &Args);
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  void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
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                          llvm::opt::ArgStringList &CC1Args) const;
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  /// Emit an error if Version does not support the given Arch.
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  ///
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  /// If either Version or Arch is unknown, does not emit an error.  Emits at
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  /// most one error per Arch.
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  void CheckCudaVersionSupportsArch(CudaArch Arch) const;
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  /// Check whether we detected a valid Cuda install.
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  bool isValid() const { return IsValid; }
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  /// Print information about the detected CUDA installation.
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  void print(raw_ostream &OS) const;
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  /// Get the detected Cuda install's version.
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  CudaVersion version() const { return Version; }
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  /// Get the detected Cuda installation path.
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  StringRef getInstallPath() const { return InstallPath; }
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  /// Get the detected path to Cuda's bin directory.
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  StringRef getBinPath() const { return BinPath; }
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  /// Get the detected Cuda Include path.
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  StringRef getIncludePath() const { return IncludePath; }
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  /// Get the detected Cuda library path.
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  StringRef getLibPath() const { return LibPath; }
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  /// Get the detected Cuda device library path.
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  StringRef getLibDevicePath() const { return LibDevicePath; }
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  /// Get libdevice file for given architecture
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  std::string getLibDeviceFile(StringRef Gpu) const {
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    return LibDeviceMap.lookup(Gpu);
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  }
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  void WarnIfUnsupportedVersion();
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};
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namespace tools {
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namespace NVPTX {
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// Run ptxas, the NVPTX assembler.
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class LLVM_LIBRARY_VISIBILITY Assembler : public Tool {
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 public:
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   Assembler(const ToolChain &TC) : Tool("NVPTX::Assembler", "ptxas", TC) {}
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   bool hasIntegratedCPP() const override { return false; }
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   void ConstructJob(Compilation &C, const JobAction &JA,
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                     const InputInfo &Output, const InputInfoList &Inputs,
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                     const llvm::opt::ArgList &TCArgs,
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                     const char *LinkingOutput) const override;
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};
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// Runs fatbinary, which combines GPU object files ("cubin" files) and/or PTX
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// assembly into a single output file.
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class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
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 public:
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   Linker(const ToolChain &TC) : Tool("NVPTX::Linker", "fatbinary", TC) {}
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   bool hasIntegratedCPP() const override { return false; }
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   void ConstructJob(Compilation &C, const JobAction &JA,
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                     const InputInfo &Output, const InputInfoList &Inputs,
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                     const llvm::opt::ArgList &TCArgs,
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                     const char *LinkingOutput) const override;
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};
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class LLVM_LIBRARY_VISIBILITY OpenMPLinker : public Tool {
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 public:
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   OpenMPLinker(const ToolChain &TC)
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       : Tool("NVPTX::OpenMPLinker", "nvlink", TC) {}
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   bool hasIntegratedCPP() const override { return false; }
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   void ConstructJob(Compilation &C, const JobAction &JA,
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                     const InputInfo &Output, const InputInfoList &Inputs,
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                     const llvm::opt::ArgList &TCArgs,
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                     const char *LinkingOutput) const override;
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};
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} // end namespace NVPTX
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} // end namespace tools
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namespace toolchains {
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class LLVM_LIBRARY_VISIBILITY CudaToolChain : public ToolChain {
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public:
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  CudaToolChain(const Driver &D, const llvm::Triple &Triple,
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                const ToolChain &HostTC, const llvm::opt::ArgList &Args,
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                const Action::OffloadKind OK);
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  const llvm::Triple *getAuxTriple() const override {
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    return &HostTC.getTriple();
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  }
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  std::string getInputFilename(const InputInfo &Input) const override;
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  llvm::opt::DerivedArgList *
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  TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch,
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                Action::OffloadKind DeviceOffloadKind) const override;
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  void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
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                             llvm::opt::ArgStringList &CC1Args,
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                             Action::OffloadKind DeviceOffloadKind) const override;
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  llvm::DenormalMode getDefaultDenormalModeForType(
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      const llvm::opt::ArgList &DriverArgs, const JobAction &JA,
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      const llvm::fltSemantics *FPType = nullptr) const override;
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  // Never try to use the integrated assembler with CUDA; always fork out to
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  // ptxas.
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  bool useIntegratedAs() const override { return false; }
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  bool isCrossCompiling() const override { return true; }
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  bool isPICDefault() const override { return false; }
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  bool isPIEDefault() const override { return false; }
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  bool isPICDefaultForced() const override { return false; }
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  bool SupportsProfiling() const override { return false; }
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  bool supportsDebugInfoOption(const llvm::opt::Arg *A) const override;
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  void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind,
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                           const llvm::opt::ArgList &Args) const override;
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  bool IsMathErrnoDefault() const override { return false; }
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  void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
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                          llvm::opt::ArgStringList &CC1Args) const override;
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  void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override;
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  CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
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  void
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  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
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                            llvm::opt::ArgStringList &CC1Args) const override;
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  void AddClangCXXStdlibIncludeArgs(
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      const llvm::opt::ArgList &Args,
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      llvm::opt::ArgStringList &CC1Args) const override;
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  void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs,
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                           llvm::opt::ArgStringList &CC1Args) const override;
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  SanitizerMask getSupportedSanitizers() const override;
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  VersionTuple
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  computeMSVCVersion(const Driver *D,
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                     const llvm::opt::ArgList &Args) const override;
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  unsigned GetDefaultDwarfVersion() const override { return 2; }
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  // NVPTX supports only DWARF2.
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  unsigned getMaxDwarfVersion() const override { return 2; }
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  const ToolChain &HostTC;
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  CudaInstallationDetector CudaInstallation;
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protected:
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  Tool *buildAssembler() const override;  // ptxas
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  Tool *buildLinker() const override;     // fatbinary (ok, not really a linker)
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private:
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  const Action::OffloadKind OK;
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};
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} // end namespace toolchains
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} // end namespace driver
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} // end namespace clang
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#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H