1 //===--- MSVC.h - MSVC ToolChain Implementations ----------------*- C++ -*-===//
2 //
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
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_MSVC_H
10 #define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_MSVC_H
11 
12 #include "AMDGPU.h"
13 #include "Cuda.h"
14 #include "clang/Driver/Compilation.h"
15 #include "clang/Driver/Tool.h"
16 #include "clang/Driver/ToolChain.h"
17 #include "llvm/Frontend/Debug/Options.h"
18 #include "llvm/WindowsDriver/MSVCPaths.h"
19 
20 namespace clang {
21 namespace driver {
22 namespace tools {
23 
24 /// Visual studio tools.
25 namespace visualstudio {
26 class LLVM_LIBRARY_VISIBILITY Linker final : public Tool {
27 public:
28   Linker(const ToolChain &TC) : Tool("visualstudio::Linker", "linker", TC) {}
29 
30   bool hasIntegratedCPP() const override { return false; }
31   bool isLinkJob() const override { return true; }
32 
33   void ConstructJob(Compilation &C, const JobAction &JA,
34                     const InputInfo &Output, const InputInfoList &Inputs,
35                     const llvm::opt::ArgList &TCArgs,
36                     const char *LinkingOutput) const override;
37 };
38 } // end namespace visualstudio
39 
40 } // end namespace tools
41 
42 namespace toolchains {
43 
44 class LLVM_LIBRARY_VISIBILITY MSVCToolChain : public ToolChain {
45 public:
46   MSVCToolChain(const Driver &D, const llvm::Triple &Triple,
47                 const llvm::opt::ArgList &Args);
48 
49   llvm::opt::DerivedArgList *
50   TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch,
51                 Action::OffloadKind DeviceOffloadKind) const override;
52 
53   UnwindTableLevel
54   getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override;
55   bool isPICDefault() const override;
56   bool isPIEDefault(const llvm::opt::ArgList &Args) const override;
57   bool isPICDefaultForced() const override;
58 
59   /// Set CodeView as the default debug info format for non-MachO binary
60   /// formats, and to DWARF otherwise. Users can use -gcodeview and -gdwarf to
61   /// override the default.
62   llvm::codegenoptions::DebugInfoFormat getDefaultDebugFormat() const override {
63     return getTriple().isOSBinFormatMachO()
64                ? llvm::codegenoptions::DIF_DWARF
65                : llvm::codegenoptions::DIF_CodeView;
66   }
67 
68   /// Set the debugger tuning to "default", since we're definitely not tuning
69   /// for GDB.
70   llvm::DebuggerKind getDefaultDebuggerTuning() const override {
71     return llvm::DebuggerKind::Default;
72   }
73 
74   unsigned GetDefaultDwarfVersion() const override {
75     return 4;
76   }
77 
78   std::string getSubDirectoryPath(llvm::SubDirectoryType Type,
79                                   llvm::StringRef SubdirParent = "") const;
80   std::string getSubDirectoryPath(llvm::SubDirectoryType Type,
81                                   llvm::Triple::ArchType TargetArch) const;
82 
83   bool getIsVS2017OrNewer() const {
84     return VSLayout == llvm::ToolsetLayout::VS2017OrNewer;
85   }
86 
87   void
88   AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
89                             llvm::opt::ArgStringList &CC1Args) const override;
90   void AddClangCXXStdlibIncludeArgs(
91       const llvm::opt::ArgList &DriverArgs,
92       llvm::opt::ArgStringList &CC1Args) const override;
93 
94   void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
95                           llvm::opt::ArgStringList &CC1Args) const override;
96 
97   void AddHIPIncludeArgs(const llvm::opt::ArgList &DriverArgs,
98                          llvm::opt::ArgStringList &CC1Args) const override;
99 
100   void AddHIPRuntimeLibArgs(const llvm::opt::ArgList &Args,
101                             llvm::opt::ArgStringList &CmdArgs) const override;
102 
103   bool getWindowsSDKLibraryPath(
104       const llvm::opt::ArgList &Args, std::string &path) const;
105   bool getUniversalCRTLibraryPath(const llvm::opt::ArgList &Args,
106                                   std::string &path) const;
107   bool useUniversalCRT() const;
108   VersionTuple
109   computeMSVCVersion(const Driver *D,
110                      const llvm::opt::ArgList &Args) const override;
111 
112   std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args,
113                                           types::ID InputType) const override;
114   SanitizerMask getSupportedSanitizers() const override;
115 
116   void printVerboseInfo(raw_ostream &OS) const override;
117 
118   bool FoundMSVCInstall() const { return !VCToolChainPath.empty(); }
119 
120   void
121   addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
122                         llvm::opt::ArgStringList &CC1Args,
123                         Action::OffloadKind DeviceOffloadKind) const override;
124 
125 protected:
126   void AddSystemIncludeWithSubfolder(const llvm::opt::ArgList &DriverArgs,
127                                      llvm::opt::ArgStringList &CC1Args,
128                                      const std::string &folder,
129                                      const Twine &subfolder1,
130                                      const Twine &subfolder2 = "",
131                                      const Twine &subfolder3 = "") const;
132 
133   Tool *buildLinker() const override;
134   Tool *buildAssembler() const override;
135 private:
136   std::optional<llvm::StringRef> WinSdkDir, WinSdkVersion, WinSysRoot;
137   std::string VCToolChainPath;
138   llvm::ToolsetLayout VSLayout = llvm::ToolsetLayout::OlderVS;
139   CudaInstallationDetector CudaInstallation;
140   RocmInstallationDetector RocmInstallation;
141 };
142 
143 } // end namespace toolchains
144 } // end namespace driver
145 } // end namespace clang
146 
147 #endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_MSVC_H
148