lib/Driver/ToolChains/HIPSPV.cpp - llvm-project/clang - Git at Google

 //===--- HIPSPV.cpp - HIPSPV ToolChain Implementation -----------*- 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
 //
 //===----------------------------------------------------------------------===//

 #include "HIPSPV.h"
 #include "CommonArgs.h"
 #include "HIPUtility.h"
 #include "clang/Driver/Compilation.h"
 #include "clang/Driver/Driver.h"
 #include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Driver/InputInfo.h"
 #include "clang/Driver/Options.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"

 using namespace clang::driver;
 using namespace clang::driver::toolchains;
 using namespace clang::driver::tools;
 using namespace clang;
 using namespace llvm::opt;

 // Convenience function for creating temporary file for both modes of
 // isSaveTempsEnabled().
 static const char *getTempFile(Compilation &C, StringRef Prefix,
                                StringRef Extension) {
   if (C.getDriver().isSaveTempsEnabled()) {
     return C.getArgs().MakeArgString(Prefix + "." + Extension);
   }
   auto TmpFile = C.getDriver().GetTemporaryPath(Prefix, Extension);
   return C.addTempFile(C.getArgs().MakeArgString(TmpFile));
 }

 // Locates HIP pass plugin.
 static std::string findPassPlugin(const Driver &D,
                                   const llvm::opt::ArgList &Args) {
   StringRef Path = Args.getLastArgValue(options::OPT_hipspv_pass_plugin_EQ);
   if (!Path.empty()) {
     if (llvm::sys::fs::exists(Path))
       return Path.str();
     D.Diag(diag::err_drv_no_such_file) << Path;
   }

   StringRef hipPath = Args.getLastArgValue(options::OPT_hip_path_EQ);
   if (!hipPath.empty()) {
     SmallString<128> PluginPath(hipPath);
     llvm::sys::path::append(PluginPath, "lib", "libLLVMHipSpvPasses.so");
     if (llvm::sys::fs::exists(PluginPath))
       return PluginPath.str().str();
     PluginPath.assign(hipPath);
     llvm::sys::path::append(PluginPath, "lib", "llvm",
                             "libLLVMHipSpvPasses.so");
     if (llvm::sys::fs::exists(PluginPath))
       return PluginPath.str().str();
   }

   return std::string();
 }

 void HIPSPV::Linker::constructLinkAndEmitSpirvCommand(
     Compilation &C, const JobAction &JA, const InputInfoList &Inputs,
     const InputInfo &Output, const llvm::opt::ArgList &Args) const {

   assert(!Inputs.empty() && "Must have at least one input.");
   std::string Name = std::string(llvm::sys::path::stem(Output.getFilename()));
   const char *TempFile = getTempFile(C, Name + "-link", "bc");

   // Link LLVM bitcode.
   ArgStringList LinkArgs{};
   for (auto Input : Inputs)
     LinkArgs.push_back(Input.getFilename());
   LinkArgs.append({"-o", TempFile});
   const char *LlvmLink =
       Args.MakeArgString(getToolChain().GetProgramPath("llvm-link"));
   C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
                                          LlvmLink, LinkArgs, Inputs, Output));

   // Post-link HIP lowering.

   // Run LLVM IR passes to lower/expand/emulate HIP code that does not translate
   // to SPIR-V (E.g. dynamic shared memory).
   auto PassPluginPath = findPassPlugin(C.getDriver(), Args);
   if (!PassPluginPath.empty()) {
     const char *PassPathCStr = C.getArgs().MakeArgString(PassPluginPath);
     const char *OptOutput = getTempFile(C, Name + "-lower", "bc");
     ArgStringList OptArgs{TempFile,     "-load-pass-plugin",
                           PassPathCStr, "-passes=hip-post-link-passes",
                           "-o",         OptOutput};
     const char *Opt = Args.MakeArgString(getToolChain().GetProgramPath("opt"));
     C.addCommand(std::make_unique<Command>(
         JA, *this, ResponseFileSupport::None(), Opt, OptArgs, Inputs, Output));
     TempFile = OptOutput;
   }

   // Emit SPIR-V binary.

   llvm::opt::ArgStringList TrArgs{"--spirv-max-version=1.1",
                                   "--spirv-ext=+all"};
   InputInfo TrInput = InputInfo(types::TY_LLVM_BC, TempFile, "");
   SPIRV::constructTranslateCommand(C, *this, JA, Output, TrInput, TrArgs);
 }

 void HIPSPV::Linker::ConstructJob(Compilation &C, const JobAction &JA,
                                   const InputInfo &Output,
                                   const InputInfoList &Inputs,
                                   const ArgList &Args,
                                   const char *LinkingOutput) const {
   if (Inputs.size() > 0 && Inputs[0].getType() == types::TY_Image &&
       JA.getType() == types::TY_Object)
     return HIP::constructGenerateObjFileFromHIPFatBinary(C, Output, Inputs,
                                                          Args, JA, *this);

   if (JA.getType() == types::TY_HIP_FATBIN)
     return HIP::constructHIPFatbinCommand(C, JA, Output.getFilename(), Inputs,
                                           Args, *this);

   constructLinkAndEmitSpirvCommand(C, JA, Inputs, Output, Args);
 }

 HIPSPVToolChain::HIPSPVToolChain(const Driver &D, const llvm::Triple &Triple,
                                  const ToolChain &HostTC, const ArgList &Args)
     : ToolChain(D, Triple, Args), HostTC(HostTC) {
   // Lookup binaries into the driver directory, this is used to
   // discover the clang-offload-bundler executable.
   getProgramPaths().push_back(getDriver().Dir);
 }

 void HIPSPVToolChain::addClangTargetOptions(
     const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
     Action::OffloadKind DeviceOffloadingKind) const {
   HostTC.addClangTargetOptions(DriverArgs, CC1Args, DeviceOffloadingKind);

   assert(DeviceOffloadingKind == Action::OFK_HIP &&
          "Only HIP offloading kinds are supported for GPUs.");

   CC1Args.append(
       {"-fcuda-is-device", "-fcuda-allow-variadic-functions",
        // A crude workaround for llvm-spirv which does not handle the
        // autovectorized code well (vector reductions, non-i{8,16,32,64} types).
        // TODO: Allow autovectorization when SPIR-V backend arrives.
        "-mllvm", "-vectorize-loops=false", "-mllvm", "-vectorize-slp=false"});

   // Default to "hidden" visibility, as object level linking will not be
   // supported for the foreseeable future.
   if (!DriverArgs.hasArg(options::OPT_fvisibility_EQ,
                          options::OPT_fvisibility_ms_compat))
     CC1Args.append(
         {"-fvisibility=hidden", "-fapply-global-visibility-to-externs"});

   llvm::for_each(getDeviceLibs(DriverArgs),
                  [&](const BitCodeLibraryInfo &BCFile) {
                    CC1Args.append({"-mlink-builtin-bitcode",
                                    DriverArgs.MakeArgString(BCFile.Path)});
                  });
 }

 Tool *HIPSPVToolChain::buildLinker() const {
   assert(getTriple().getArch() == llvm::Triple::spirv64);
   return new tools::HIPSPV::Linker(*this);
 }

 void HIPSPVToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {
   HostTC.addClangWarningOptions(CC1Args);
 }

 ToolChain::CXXStdlibType
 HIPSPVToolChain::GetCXXStdlibType(const ArgList &Args) const {
   return HostTC.GetCXXStdlibType(Args);
 }

 void HIPSPVToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
                                                 ArgStringList &CC1Args) const {
   HostTC.AddClangSystemIncludeArgs(DriverArgs, CC1Args);
 }

 void HIPSPVToolChain::AddClangCXXStdlibIncludeArgs(
     const ArgList &Args, ArgStringList &CC1Args) const {
   HostTC.AddClangCXXStdlibIncludeArgs(Args, CC1Args);
 }

 void HIPSPVToolChain::AddIAMCUIncludeArgs(const ArgList &Args,
                                           ArgStringList &CC1Args) const {
   HostTC.AddIAMCUIncludeArgs(Args, CC1Args);
 }

 void HIPSPVToolChain::AddHIPIncludeArgs(const ArgList &DriverArgs,
                                         ArgStringList &CC1Args) const {
   if (DriverArgs.hasArg(options::OPT_nogpuinc))
     return;

   StringRef hipPath = DriverArgs.getLastArgValue(options::OPT_hip_path_EQ);
   if (hipPath.empty()) {
     getDriver().Diag(diag::err_drv_hipspv_no_hip_path) << 1 << "'-nogpuinc'";
     return;
   }
   SmallString<128> P(hipPath);
   llvm::sys::path::append(P, "include");
   CC1Args.append({"-isystem", DriverArgs.MakeArgString(P)});
 }

 llvm::SmallVector<ToolChain::BitCodeLibraryInfo, 12>
 HIPSPVToolChain::getDeviceLibs(const llvm::opt::ArgList &DriverArgs) const {
   llvm::SmallVector<ToolChain::BitCodeLibraryInfo, 12> BCLibs;
   if (DriverArgs.hasArg(options::OPT_nogpulib))
     return {};

   ArgStringList LibraryPaths;
   // Find device libraries in --hip-device-lib-path and HIP_DEVICE_LIB_PATH.
   auto HipDeviceLibPathArgs = DriverArgs.getAllArgValues(
       // --hip-device-lib-path is alias to this option.
       clang::driver::options::OPT_rocm_device_lib_path_EQ);
   for (auto Path : HipDeviceLibPathArgs)
     LibraryPaths.push_back(DriverArgs.MakeArgString(Path));

   StringRef HipPath = DriverArgs.getLastArgValue(options::OPT_hip_path_EQ);
   if (!HipPath.empty()) {
     SmallString<128> Path(HipPath);
     llvm::sys::path::append(Path, "lib", "hip-device-lib");
     LibraryPaths.push_back(DriverArgs.MakeArgString(Path));
   }

   addDirectoryList(DriverArgs, LibraryPaths, "", "HIP_DEVICE_LIB_PATH");

   // Maintain compatability with --hip-device-lib.
   auto BCLibArgs = DriverArgs.getAllArgValues(options::OPT_hip_device_lib_EQ);
   if (!BCLibArgs.empty()) {
     llvm::for_each(BCLibArgs, [&](StringRef BCName) {
       StringRef FullName;
       for (std::string LibraryPath : LibraryPaths) {
         SmallString<128> Path(LibraryPath);
         llvm::sys::path::append(Path, BCName);
         FullName = Path;
         if (llvm::sys::fs::exists(FullName)) {
           BCLibs.emplace_back(FullName.str());
           return;
         }
       }
       getDriver().Diag(diag::err_drv_no_such_file) << BCName;
     });
   } else {
     // Search device library named as 'hipspv-<triple>.bc'.
     auto TT = getTriple().normalize();
     std::string BCName = "hipspv-" + TT + ".bc";
     for (auto *LibPath : LibraryPaths) {
       SmallString<128> Path(LibPath);
       llvm::sys::path::append(Path, BCName);
       if (llvm::sys::fs::exists(Path)) {
         BCLibs.emplace_back(Path.str().str());
         return BCLibs;
       }
     }
     getDriver().Diag(diag::err_drv_no_hipspv_device_lib)
         << 1 << ("'" + TT + "' target");
     return {};
   }

   return BCLibs;
 }

 SanitizerMask HIPSPVToolChain::getSupportedSanitizers() const {
   // The HIPSPVToolChain only supports sanitizers in the sense that it allows
   // sanitizer arguments on the command line if they are supported by the host
   // toolchain. The HIPSPVToolChain will actually ignore any command line
   // arguments for any of these "supported" sanitizers. That means that no
   // sanitization of device code is actually supported at this time.
   //
   // This behavior is necessary because the host and device toolchains
   // invocations often share the command line, so the device toolchain must
   // tolerate flags meant only for the host toolchain.
   return HostTC.getSupportedSanitizers();
 }

 VersionTuple HIPSPVToolChain::computeMSVCVersion(const Driver *D,
                                                  const ArgList &Args) const {
   return HostTC.computeMSVCVersion(D, Args);
 }

 void HIPSPVToolChain::adjustDebugInfoKind(
     llvm::codegenoptions::DebugInfoKind &DebugInfoKind,
     const llvm::opt::ArgList &Args) const {
   // Debug info generation is disabled for SPIRV-LLVM-Translator
   // which currently aborts on the presence of DW_OP_LLVM_convert.
   // TODO: Enable debug info when the SPIR-V backend arrives.
   DebugInfoKind = llvm::codegenoptions::NoDebugInfo;
 }
	//===--- HIPSPV.cpp - HIPSPV ToolChain Implementation ------------ 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
	//
	//===----------------------------------------------------------------------===//

	#include "HIPSPV.h"
	#include "CommonArgs.h"
	#include "HIPUtility.h"
	#include "clang/Driver/Compilation.h"
	#include "clang/Driver/Driver.h"
	#include "clang/Driver/DriverDiagnostic.h"
	#include "clang/Driver/InputInfo.h"
	#include "clang/Driver/Options.h"
	#include "llvm/Support/FileSystem.h"
	#include "llvm/Support/Path.h"

	using namespace clang::driver;
	using namespace clang::driver::toolchains;
	using namespace clang::driver::tools;
	using namespace clang;
	using namespace llvm::opt;

	// Convenience function for creating temporary file for both modes of
	// isSaveTempsEnabled().
	static const char *getTempFile(Compilation &C, StringRef Prefix,
	StringRef Extension) {
	if (C.getDriver().isSaveTempsEnabled()) {
	return C.getArgs().MakeArgString(Prefix + "." + Extension);
	}
	auto TmpFile = C.getDriver().GetTemporaryPath(Prefix, Extension);
	return C.addTempFile(C.getArgs().MakeArgString(TmpFile));
	}

	// Locates HIP pass plugin.
	static std::string findPassPlugin(const Driver &D,
	const llvm::opt::ArgList &Args) {
	StringRef Path = Args.getLastArgValue(options::OPT_hipspv_pass_plugin_EQ);
	if (!Path.empty()) {
	if (llvm::sys::fs::exists(Path))
	return Path.str();
	D.Diag(diag::err_drv_no_such_file) << Path;
	}

	StringRef hipPath = Args.getLastArgValue(options::OPT_hip_path_EQ);
	if (!hipPath.empty()) {
	SmallString<128> PluginPath(hipPath);
	llvm::sys::path::append(PluginPath, "lib", "libLLVMHipSpvPasses.so");
	if (llvm::sys::fs::exists(PluginPath))
	return PluginPath.str().str();
	PluginPath.assign(hipPath);
	llvm::sys::path::append(PluginPath, "lib", "llvm",
	"libLLVMHipSpvPasses.so");
	if (llvm::sys::fs::exists(PluginPath))
	return PluginPath.str().str();
	}

	return std::string();
	}

	void HIPSPV::Linker::constructLinkAndEmitSpirvCommand(
	Compilation &C, const JobAction &JA, const InputInfoList &Inputs,
	const InputInfo &Output, const llvm::opt::ArgList &Args) const {

	assert(!Inputs.empty() && "Must have at least one input.");
	std::string Name = std::string(llvm::sys::path::stem(Output.getFilename()));
	const char *TempFile = getTempFile(C, Name + "-link", "bc");

	// Link LLVM bitcode.
	ArgStringList LinkArgs{};
	for (auto Input : Inputs)
	LinkArgs.push_back(Input.getFilename());
	LinkArgs.append({"-o", TempFile});
	const char *LlvmLink =
	Args.MakeArgString(getToolChain().GetProgramPath("llvm-link"));
	C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
	LlvmLink, LinkArgs, Inputs, Output));

	// Post-link HIP lowering.

	// Run LLVM IR passes to lower/expand/emulate HIP code that does not translate
	// to SPIR-V (E.g. dynamic shared memory).
	auto PassPluginPath = findPassPlugin(C.getDriver(), Args);
	if (!PassPluginPath.empty()) {
	const char *PassPathCStr = C.getArgs().MakeArgString(PassPluginPath);
	const char *OptOutput = getTempFile(C, Name + "-lower", "bc");
	ArgStringList OptArgs{TempFile, "-load-pass-plugin",
	PassPathCStr, "-passes=hip-post-link-passes",
	"-o", OptOutput};
	const char *Opt = Args.MakeArgString(getToolChain().GetProgramPath("opt"));
	C.addCommand(std::make_unique<Command>(
	JA, *this, ResponseFileSupport::None(), Opt, OptArgs, Inputs, Output));
	TempFile = OptOutput;
	}

	// Emit SPIR-V binary.

	llvm::opt::ArgStringList TrArgs{"--spirv-max-version=1.1",
	"--spirv-ext=+all"};
	InputInfo TrInput = InputInfo(types::TY_LLVM_BC, TempFile, "");
	SPIRV::constructTranslateCommand(C, *this, JA, Output, TrInput, TrArgs);
	}

	void HIPSPV::Linker::ConstructJob(Compilation &C, const JobAction &JA,
	const InputInfo &Output,
	const InputInfoList &Inputs,
	const ArgList &Args,
	const char *LinkingOutput) const {
	if (Inputs.size() > 0 && Inputs[0].getType() == types::TY_Image &&
	JA.getType() == types::TY_Object)
	return HIP::constructGenerateObjFileFromHIPFatBinary(C, Output, Inputs,
	Args, JA, *this);

	if (JA.getType() == types::TY_HIP_FATBIN)
	return HIP::constructHIPFatbinCommand(C, JA, Output.getFilename(), Inputs,
	Args, *this);

	constructLinkAndEmitSpirvCommand(C, JA, Inputs, Output, Args);
	}

	HIPSPVToolChain::HIPSPVToolChain(const Driver &D, const llvm::Triple &Triple,
	const ToolChain &HostTC, const ArgList &Args)
	: ToolChain(D, Triple, Args), HostTC(HostTC) {
	// Lookup binaries into the driver directory, this is used to
	// discover the clang-offload-bundler executable.
	getProgramPaths().push_back(getDriver().Dir);
	}

	void HIPSPVToolChain::addClangTargetOptions(
	const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
	Action::OffloadKind DeviceOffloadingKind) const {
	HostTC.addClangTargetOptions(DriverArgs, CC1Args, DeviceOffloadingKind);

	assert(DeviceOffloadingKind == Action::OFK_HIP &&
	"Only HIP offloading kinds are supported for GPUs.");

	CC1Args.append(
	{"-fcuda-is-device", "-fcuda-allow-variadic-functions",
	// A crude workaround for llvm-spirv which does not handle the
	// autovectorized code well (vector reductions, non-i{8,16,32,64} types).
	// TODO: Allow autovectorization when SPIR-V backend arrives.
	"-mllvm", "-vectorize-loops=false", "-mllvm", "-vectorize-slp=false"});

	// Default to "hidden" visibility, as object level linking will not be
	// supported for the foreseeable future.
	if (!DriverArgs.hasArg(options::OPT_fvisibility_EQ,
	options::OPT_fvisibility_ms_compat))
	CC1Args.append(
	{"-fvisibility=hidden", "-fapply-global-visibility-to-externs"});

	llvm::for_each(getDeviceLibs(DriverArgs),
	[&](const BitCodeLibraryInfo &BCFile) {
	CC1Args.append({"-mlink-builtin-bitcode",
	DriverArgs.MakeArgString(BCFile.Path)});
	});
	}

	Tool *HIPSPVToolChain::buildLinker() const {
	assert(getTriple().getArch() == llvm::Triple::spirv64);
	return new tools::HIPSPV::Linker(*this);
	}

	void HIPSPVToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {
	HostTC.addClangWarningOptions(CC1Args);
	}

	ToolChain::CXXStdlibType
	HIPSPVToolChain::GetCXXStdlibType(const ArgList &Args) const {
	return HostTC.GetCXXStdlibType(Args);
	}

	void HIPSPVToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
	ArgStringList &CC1Args) const {
	HostTC.AddClangSystemIncludeArgs(DriverArgs, CC1Args);
	}

	void HIPSPVToolChain::AddClangCXXStdlibIncludeArgs(
	const ArgList &Args, ArgStringList &CC1Args) const {
	HostTC.AddClangCXXStdlibIncludeArgs(Args, CC1Args);
	}

	void HIPSPVToolChain::AddIAMCUIncludeArgs(const ArgList &Args,
	ArgStringList &CC1Args) const {
	HostTC.AddIAMCUIncludeArgs(Args, CC1Args);
	}

	void HIPSPVToolChain::AddHIPIncludeArgs(const ArgList &DriverArgs,
	ArgStringList &CC1Args) const {
	if (DriverArgs.hasArg(options::OPT_nogpuinc))
	return;

	StringRef hipPath = DriverArgs.getLastArgValue(options::OPT_hip_path_EQ);
	if (hipPath.empty()) {
	getDriver().Diag(diag::err_drv_hipspv_no_hip_path) << 1 << "'-nogpuinc'";
	return;
	}
	SmallString<128> P(hipPath);
	llvm::sys::path::append(P, "include");
	CC1Args.append({"-isystem", DriverArgs.MakeArgString(P)});
	}

	llvm::SmallVector<ToolChain::BitCodeLibraryInfo, 12>
	HIPSPVToolChain::getDeviceLibs(const llvm::opt::ArgList &DriverArgs) const {
	llvm::SmallVector<ToolChain::BitCodeLibraryInfo, 12> BCLibs;
	if (DriverArgs.hasArg(options::OPT_nogpulib))
	return {};

	ArgStringList LibraryPaths;
	// Find device libraries in --hip-device-lib-path and HIP_DEVICE_LIB_PATH.
	auto HipDeviceLibPathArgs = DriverArgs.getAllArgValues(
	// --hip-device-lib-path is alias to this option.
	clang::driver::options::OPT_rocm_device_lib_path_EQ);
	for (auto Path : HipDeviceLibPathArgs)
	LibraryPaths.push_back(DriverArgs.MakeArgString(Path));

	StringRef HipPath = DriverArgs.getLastArgValue(options::OPT_hip_path_EQ);
	if (!HipPath.empty()) {
	SmallString<128> Path(HipPath);
	llvm::sys::path::append(Path, "lib", "hip-device-lib");
	LibraryPaths.push_back(DriverArgs.MakeArgString(Path));
	}

	addDirectoryList(DriverArgs, LibraryPaths, "", "HIP_DEVICE_LIB_PATH");

	// Maintain compatability with --hip-device-lib.
	auto BCLibArgs = DriverArgs.getAllArgValues(options::OPT_hip_device_lib_EQ);
	if (!BCLibArgs.empty()) {
	llvm::for_each(BCLibArgs, [&](StringRef BCName) {
	StringRef FullName;
	for (std::string LibraryPath : LibraryPaths) {
	SmallString<128> Path(LibraryPath);
	llvm::sys::path::append(Path, BCName);
	FullName = Path;
	if (llvm::sys::fs::exists(FullName)) {
	BCLibs.emplace_back(FullName.str());
	return;
	}
	}
	getDriver().Diag(diag::err_drv_no_such_file) << BCName;
	});
	} else {
	// Search device library named as 'hipspv-<triple>.bc'.
	auto TT = getTriple().normalize();
	std::string BCName = "hipspv-" + TT + ".bc";
	for (auto *LibPath : LibraryPaths) {
	SmallString<128> Path(LibPath);
	llvm::sys::path::append(Path, BCName);
	if (llvm::sys::fs::exists(Path)) {
	BCLibs.emplace_back(Path.str().str());
	return BCLibs;
	}
	}
	getDriver().Diag(diag::err_drv_no_hipspv_device_lib)
	<< 1 << ("'" + TT + "' target");
	return {};
	}

	return BCLibs;
	}

	SanitizerMask HIPSPVToolChain::getSupportedSanitizers() const {
	// The HIPSPVToolChain only supports sanitizers in the sense that it allows
	// sanitizer arguments on the command line if they are supported by the host
	// toolchain. The HIPSPVToolChain will actually ignore any command line
	// arguments for any of these "supported" sanitizers. That means that no
	// sanitization of device code is actually supported at this time.
	//
	// This behavior is necessary because the host and device toolchains
	// invocations often share the command line, so the device toolchain must
	// tolerate flags meant only for the host toolchain.
	return HostTC.getSupportedSanitizers();
	}

	VersionTuple HIPSPVToolChain::computeMSVCVersion(const Driver *D,
	const ArgList &Args) const {
	return HostTC.computeMSVCVersion(D, Args);
	}

	void HIPSPVToolChain::adjustDebugInfoKind(
	llvm::codegenoptions::DebugInfoKind &DebugInfoKind,
	const llvm::opt::ArgList &Args) const {
	// Debug info generation is disabled for SPIRV-LLVM-Translator
	// which currently aborts on the presence of DW_OP_LLVM_convert.
	// TODO: Enable debug info when the SPIR-V backend arrives.
	DebugInfoKind = llvm::codegenoptions::NoDebugInfo;
	}