Hexagon.h

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//===--- Hexagon.h - Hexagon ToolChain Implementations ----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_HEXAGON_H
#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_HEXAGON_H
 
#include "Linux.h"
#include "clang/Driver/Tool.h"
#include "clang/Driver/ToolChain.h"
 
#include <optional>
#include <string>
 
namespace clang {
namespace driver {
namespace tools {
namespace hexagon {
// For Hexagon, we do not need to instantiate tools for PreProcess, PreCompile
// and Compile.
// We simply use "clang -cc1" for those actions.
class LLVM_LIBRARY_VISIBILITY Assembler final : public Tool {
public:
  Assembler(const ToolChain &TC)
      : Tool("hexagon::Assembler", "hexagon-as", TC) {}
 
  bool hasIntegratedCPP() const override { return false; }
 
  void RenderExtraToolArgs(const JobAction &JA,
                           llvm::opt::ArgStringList &CmdArgs) const;
  void ConstructJob(Compilation &C, const JobAction &JA,
                    const InputInfo &Output, const InputInfoList &Inputs,
                    const llvm::opt::ArgList &TCArgs,
                    const char *LinkingOutput) const override;
};
 
class LLVM_LIBRARY_VISIBILITY Linker final : public Tool {
public:
  Linker(const ToolChain &TC) : Tool("hexagon::Linker", "hexagon-ld", TC) {}
 
  bool hasIntegratedCPP() const override { return false; }
  bool isLinkJob() const override { return true; }
 
  void RenderExtraToolArgs(const JobAction &JA,
                           llvm::opt::ArgStringList &CmdArgs) const;
  void ConstructJob(Compilation &C, const JobAction &JA,
                    const InputInfo &Output, const InputInfoList &Inputs,
                    const llvm::opt::ArgList &TCArgs,
                    const char *LinkingOutput) const override;
};
 
void getHexagonTargetFeatures(const Driver &D, const llvm::Triple &Triple,
                              const llvm::opt::ArgList &Args,
                              std::vector<StringRef> &Features);
 
} // end namespace hexagon.
} // end namespace tools
 
namespace toolchains {
 
class LLVM_LIBRARY_VISIBILITY HexagonToolChain : public Linux {
protected:
  GCCVersion GCCLibAndIncVersion;
  Tool *buildAssembler() const override;
  Tool *buildLinker() const override;
 
  unsigned getOptimizationLevel(const llvm::opt::ArgList &DriverArgs) const;
 
public:
  HexagonToolChain(const Driver &D, const llvm::Triple &Triple,
                   const llvm::opt::ArgList &Args);
  ~HexagonToolChain() override;
 
  void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
                             llvm::opt::ArgStringList &CC1Args,
                             Action::OffloadKind DeviceOffloadKind) const override;
  void
  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
                            llvm::opt::ArgStringList &CC1Args) const override;
  void addLibStdCxxIncludePaths(
      const llvm::opt::ArgList &DriverArgs,
      llvm::opt::ArgStringList &CC1Args) const override;
 
  void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
                             llvm::opt::ArgStringList &CC1Args) const override;
 
  const char *getDefaultLinker() const override {
    return getTriple().isMusl() ? "ld.lld" : "hexagon-link";
  }
 
  RuntimeLibType
  GetRuntimeLibType(const llvm::opt::ArgList &Args) const override;
 
  UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const override;
 
  CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
 
  void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
                           llvm::opt::ArgStringList &CmdArgs) const override;
 
  StringRef GetGCCLibAndIncVersion() const { return GCCLibAndIncVersion.Text; }
 
  std::string getHexagonTargetDir(
      const std::string &InstalledDir,
      const SmallVectorImpl<std::string> &PrefixDirs) const;
  SmallString<128> getEffectiveSysRoot(const llvm::opt::ArgList &Args) const;
  void getBaseIncludeDir(const llvm::opt::ArgList &Args,
                         llvm::SmallString<128> &) const;
  void getLibraryDir(const llvm::opt::ArgList &Args,
                     llvm::SmallString<128> &) const;
  void getHexagonLibraryPaths(const llvm::opt::ArgList &Args,
                              ToolChain::path_list &LibPaths) const;
 
  std::string getCompilerRTPath() const override;
 
  bool isPIEDefault(const llvm::opt::ArgList &Args) const override {
    return getTriple().isOSLinux() && Linux::isPIEDefault(Args);
  }
 
  static bool isAutoHVXEnabled(const llvm::opt::ArgList &Args);
  static StringRef GetDefaultCPU();
  static StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args);
 
  static std::optional<unsigned>
  getSmallDataThreshold(const llvm::opt::ArgList &Args);
  static std::optional<std::string>
  GetHVXVersion(const llvm::opt::ArgList &Args);
};
 
} // end namespace toolchains
} // end namespace driver
} // end namespace clang
 
#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_HEXAGON_H