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//===--- Cuda.h - Cuda 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_CUDA_H
#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H
#include "clang/Basic/Cuda.h"
#include "clang/Driver/Action.h"
#include "clang/Driver/Multilib.h"
#include "clang/Driver/Tool.h"
#include "clang/Driver/ToolChain.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/VersionTuple.h"
#include <set>
#include <vector>
namespace clang {
namespace driver {
/// A class to find a viable CUDA installation
class CudaInstallationDetector {
private:
const Driver &D;
bool IsValid = false;
CudaVersion Version = CudaVersion::UNKNOWN;
std::string InstallPath;
std::string BinPath;
std::string LibPath;
std::string LibDevicePath;
std::string IncludePath;
llvm::StringMap<std::string> LibDeviceMap;
// CUDA architectures for which we have raised an error in
// CheckCudaVersionSupportsArch.
mutable llvm::SmallSet<CudaArch, 4> ArchsWithBadVersion;
public:
CudaInstallationDetector(const Driver &D, const llvm::Triple &HostTriple,
const llvm::opt::ArgList &Args);
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const;
/// Emit an error if Version does not support the given Arch.
///
/// If either Version or Arch is unknown, does not emit an error. Emits at
/// most one error per Arch.
void CheckCudaVersionSupportsArch(CudaArch Arch) const;
/// Check whether we detected a valid Cuda install.
bool isValid() const { return IsValid; }
/// Print information about the detected CUDA installation.
void print(raw_ostream &OS) const;
/// Get the detected Cuda install's version.
CudaVersion version() const { return Version; }
/// Get the detected Cuda installation path.
StringRef getInstallPath() const { return InstallPath; }
/// Get the detected path to Cuda's bin directory.
StringRef getBinPath() const { return BinPath; }
/// Get the detected Cuda Include path.
StringRef getIncludePath() const { return IncludePath; }
/// Get the detected Cuda library path.
StringRef getLibPath() const { return LibPath; }
/// Get the detected Cuda device library path.
StringRef getLibDevicePath() const { return LibDevicePath; }
/// Get libdevice file for given architecture
std::string getLibDeviceFile(StringRef Gpu) const {
return LibDeviceMap.lookup(Gpu);
}
};
namespace tools {
namespace NVPTX {
// Run ptxas, the NVPTX assembler.
class LLVM_LIBRARY_VISIBILITY Assembler : public Tool {
public:
Assembler(const ToolChain &TC)
: Tool("NVPTX::Assembler", "ptxas", TC, RF_Full, llvm::sys::WEM_UTF8,
"--options-file") {}
bool hasIntegratedCPP() const override { return false; }
void ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const llvm::opt::ArgList &TCArgs,
const char *LinkingOutput) const override;
};
// Runs fatbinary, which combines GPU object files ("cubin" files) and/or PTX
// assembly into a single output file.
class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
public:
Linker(const ToolChain &TC)
: Tool("NVPTX::Linker", "fatbinary", TC, RF_Full, llvm::sys::WEM_UTF8,
"--options-file") {}
bool hasIntegratedCPP() const override { return false; }
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 OpenMPLinker : public Tool {
public:
OpenMPLinker(const ToolChain &TC)
: Tool("NVPTX::OpenMPLinker", "nvlink", TC, RF_Full, llvm::sys::WEM_UTF8,
"--options-file") {}
bool hasIntegratedCPP() const override { return false; }
void ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const llvm::opt::ArgList &TCArgs,
const char *LinkingOutput) const override;
};
} // end namespace NVPTX
} // end namespace tools
namespace toolchains {
class LLVM_LIBRARY_VISIBILITY CudaToolChain : public ToolChain {
public:
CudaToolChain(const Driver &D, const llvm::Triple &Triple,
const ToolChain &HostTC, const llvm::opt::ArgList &Args,
const Action::OffloadKind OK);
const llvm::Triple *getAuxTriple() const override {
return &HostTC.getTriple();
}
std::string getInputFilename(const InputInfo &Input) const override;
llvm::opt::DerivedArgList *
TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch,
Action::OffloadKind DeviceOffloadKind) const override;
void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args,
Action::OffloadKind DeviceOffloadKind) const override;
// Never try to use the integrated assembler with CUDA; always fork out to
// ptxas.
bool useIntegratedAs() const override { return false; }
bool isCrossCompiling() const override { return true; }
bool isPICDefault() const override { return false; }
bool isPIEDefault() const override { return false; }
bool isPICDefaultForced() const override { return false; }
bool SupportsProfiling() const override { return false; }
bool supportsDebugInfoOption(const llvm::opt::Arg *A) const override;
void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind,
const llvm::opt::ArgList &Args) const override;
bool IsMathErrnoDefault() const override { return false; }
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const override;
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override;
CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
void
AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const override;
void AddClangCXXStdlibIncludeArgs(
const llvm::opt::ArgList &Args,
llvm::opt::ArgStringList &CC1Args) const override;
void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const override;
SanitizerMask getSupportedSanitizers() const override;
VersionTuple
computeMSVCVersion(const Driver *D,
const llvm::opt::ArgList &Args) const override;
unsigned GetDefaultDwarfVersion() const override { return 2; }
const ToolChain &HostTC;
CudaInstallationDetector CudaInstallation;
protected:
Tool *buildAssembler() const override; // ptxas
Tool *buildLinker() const override; // fatbinary (ok, not really a linker)
private:
const Action::OffloadKind OK;
};
} // end namespace toolchains
} // end namespace driver
} // end namespace clang
#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H
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