1 //===--- Cuda.h - Cuda ToolChain Implementations ----------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 #ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H
10 #define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H
12 #include "clang/Basic/Cuda.h"
13 #include "clang/Driver/Action.h"
14 #include "clang/Driver/Multilib.h"
15 #include "clang/Driver/Tool.h"
16 #include "clang/Driver/ToolChain.h"
17 #include "llvm/ADT/Optional.h"
18 #include "llvm/ADT/SmallSet.h"
19 #include "llvm/Support/Compiler.h"
20 #include "llvm/Support/VersionTuple.h"
27 /// A class to find a viable CUDA installation
28 class CudaInstallationDetector {
32 CudaVersion Version = CudaVersion::UNKNOWN;
33 std::string DetectedVersion;
34 bool DetectedVersionIsNotSupported = false;
35 std::string InstallPath;
38 std::string LibDevicePath;
39 std::string IncludePath;
40 llvm::StringMap<std::string> LibDeviceMap;
42 // CUDA architectures for which we have raised an error in
43 // CheckCudaVersionSupportsArch.
44 mutable llvm::SmallSet<CudaArch, 4> ArchsWithBadVersion;
47 CudaInstallationDetector(const Driver &D, const llvm::Triple &HostTriple,
48 const llvm::opt::ArgList &Args);
50 void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
51 llvm::opt::ArgStringList &CC1Args) const;
53 /// Emit an error if Version does not support the given Arch.
55 /// If either Version or Arch is unknown, does not emit an error. Emits at
56 /// most one error per Arch.
57 void CheckCudaVersionSupportsArch(CudaArch Arch) const;
59 /// Check whether we detected a valid Cuda install.
60 bool isValid() const { return IsValid; }
61 /// Print information about the detected CUDA installation.
62 void print(raw_ostream &OS) const;
64 /// Get the detected Cuda install's version.
65 CudaVersion version() const { return Version; }
66 /// Get the detected Cuda installation path.
67 StringRef getInstallPath() const { return InstallPath; }
68 /// Get the detected path to Cuda's bin directory.
69 StringRef getBinPath() const { return BinPath; }
70 /// Get the detected Cuda Include path.
71 StringRef getIncludePath() const { return IncludePath; }
72 /// Get the detected Cuda library path.
73 StringRef getLibPath() const { return LibPath; }
74 /// Get the detected Cuda device library path.
75 StringRef getLibDevicePath() const { return LibDevicePath; }
76 /// Get libdevice file for given architecture
77 std::string getLibDeviceFile(StringRef Gpu) const {
78 return LibDeviceMap.lookup(Gpu);
80 void WarnIfUnsupportedVersion();
83 void ParseCudaVersionFile(llvm::StringRef V);
89 // Run ptxas, the NVPTX assembler.
90 class LLVM_LIBRARY_VISIBILITY Assembler : public Tool {
92 Assembler(const ToolChain &TC)
93 : Tool("NVPTX::Assembler", "ptxas", TC, RF_Full, llvm::sys::WEM_UTF8,
96 bool hasIntegratedCPP() const override { return false; }
98 void ConstructJob(Compilation &C, const JobAction &JA,
99 const InputInfo &Output, const InputInfoList &Inputs,
100 const llvm::opt::ArgList &TCArgs,
101 const char *LinkingOutput) const override;
104 // Runs fatbinary, which combines GPU object files ("cubin" files) and/or PTX
105 // assembly into a single output file.
106 class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
108 Linker(const ToolChain &TC)
109 : Tool("NVPTX::Linker", "fatbinary", TC, RF_Full, llvm::sys::WEM_UTF8,
112 bool hasIntegratedCPP() const override { return false; }
114 void ConstructJob(Compilation &C, const JobAction &JA,
115 const InputInfo &Output, const InputInfoList &Inputs,
116 const llvm::opt::ArgList &TCArgs,
117 const char *LinkingOutput) const override;
120 class LLVM_LIBRARY_VISIBILITY OpenMPLinker : public Tool {
122 OpenMPLinker(const ToolChain &TC)
123 : Tool("NVPTX::OpenMPLinker", "nvlink", TC, RF_Full, llvm::sys::WEM_UTF8,
126 bool hasIntegratedCPP() const override { return false; }
128 void ConstructJob(Compilation &C, const JobAction &JA,
129 const InputInfo &Output, const InputInfoList &Inputs,
130 const llvm::opt::ArgList &TCArgs,
131 const char *LinkingOutput) const override;
134 } // end namespace NVPTX
135 } // end namespace tools
137 namespace toolchains {
139 class LLVM_LIBRARY_VISIBILITY CudaToolChain : public ToolChain {
141 CudaToolChain(const Driver &D, const llvm::Triple &Triple,
142 const ToolChain &HostTC, const llvm::opt::ArgList &Args,
143 const Action::OffloadKind OK);
145 const llvm::Triple *getAuxTriple() const override {
146 return &HostTC.getTriple();
149 std::string getInputFilename(const InputInfo &Input) const override;
151 llvm::opt::DerivedArgList *
152 TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch,
153 Action::OffloadKind DeviceOffloadKind) const override;
154 void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
155 llvm::opt::ArgStringList &CC1Args,
156 Action::OffloadKind DeviceOffloadKind) const override;
158 // Never try to use the integrated assembler with CUDA; always fork out to
160 bool useIntegratedAs() const override { return false; }
161 bool isCrossCompiling() const override { return true; }
162 bool isPICDefault() const override { return false; }
163 bool isPIEDefault() const override { return false; }
164 bool isPICDefaultForced() const override { return false; }
165 bool SupportsProfiling() const override { return false; }
166 bool supportsDebugInfoOption(const llvm::opt::Arg *A) const override;
167 void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind,
168 const llvm::opt::ArgList &Args) const override;
169 bool IsMathErrnoDefault() const override { return false; }
171 void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
172 llvm::opt::ArgStringList &CC1Args) const override;
174 void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override;
175 CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
177 AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
178 llvm::opt::ArgStringList &CC1Args) const override;
179 void AddClangCXXStdlibIncludeArgs(
180 const llvm::opt::ArgList &Args,
181 llvm::opt::ArgStringList &CC1Args) const override;
182 void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs,
183 llvm::opt::ArgStringList &CC1Args) const override;
185 SanitizerMask getSupportedSanitizers() const override;
188 computeMSVCVersion(const Driver *D,
189 const llvm::opt::ArgList &Args) const override;
191 unsigned GetDefaultDwarfVersion() const override { return 2; }
193 const ToolChain &HostTC;
194 CudaInstallationDetector CudaInstallation;
197 Tool *buildAssembler() const override; // ptxas
198 Tool *buildLinker() const override; // fatbinary (ok, not really a linker)
201 const Action::OffloadKind OK;
204 } // end namespace toolchains
205 } // end namespace driver
206 } // end namespace clang
208 #endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_CUDA_H