1 //===--- Hexagon.h - Hexagon 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_HEXAGON_H
10 #define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_HEXAGON_H
11 
12 #include "Linux.h"
13 #include "clang/Driver/Tool.h"
14 #include "clang/Driver/ToolChain.h"
15 
16 namespace clang {
17 namespace driver {
18 namespace tools {
19 namespace hexagon {
20 // For Hexagon, we do not need to instantiate tools for PreProcess, PreCompile
21 // and Compile.
22 // We simply use "clang -cc1" for those actions.
23 class LLVM_LIBRARY_VISIBILITY Assembler : public Tool {
24 public:
25   Assembler(const ToolChain &TC)
26       : Tool("hexagon::Assembler", "hexagon-as", TC) {}
27 
28   bool hasIntegratedCPP() const override { return false; }
29 
30   void RenderExtraToolArgs(const JobAction &JA,
31                            llvm::opt::ArgStringList &CmdArgs) const;
32   void ConstructJob(Compilation &C, const JobAction &JA,
33                     const InputInfo &Output, const InputInfoList &Inputs,
34                     const llvm::opt::ArgList &TCArgs,
35                     const char *LinkingOutput) const override;
36 };
37 
38 class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
39 public:
40   Linker(const ToolChain &TC) : Tool("hexagon::Linker", "hexagon-ld", TC) {}
41 
42   bool hasIntegratedCPP() const override { return false; }
43   bool isLinkJob() const override { return true; }
44 
45   virtual void RenderExtraToolArgs(const JobAction &JA,
46                                    llvm::opt::ArgStringList &CmdArgs) const;
47   void ConstructJob(Compilation &C, const JobAction &JA,
48                     const InputInfo &Output, const InputInfoList &Inputs,
49                     const llvm::opt::ArgList &TCArgs,
50                     const char *LinkingOutput) const override;
51 };
52 
53 void getHexagonTargetFeatures(const Driver &D, const llvm::Triple &Triple,
54                               const llvm::opt::ArgList &Args,
55                               std::vector<StringRef> &Features);
56 
57 } // end namespace hexagon.
58 } // end namespace tools
59 
60 namespace toolchains {
61 
62 class LLVM_LIBRARY_VISIBILITY HexagonToolChain : public Linux {
63 protected:
64   GCCVersion GCCLibAndIncVersion;
65   Tool *buildAssembler() const override;
66   Tool *buildLinker() const override;
67 
68   unsigned getOptimizationLevel(const llvm::opt::ArgList &DriverArgs) const;
69 
70 public:
71   HexagonToolChain(const Driver &D, const llvm::Triple &Triple,
72                    const llvm::opt::ArgList &Args);
73   ~HexagonToolChain() override;
74 
75   void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
76                              llvm::opt::ArgStringList &CC1Args,
77                              Action::OffloadKind DeviceOffloadKind) const override;
78   void
79   AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
80                             llvm::opt::ArgStringList &CC1Args) const override;
81   void addLibStdCxxIncludePaths(
82       const llvm::opt::ArgList &DriverArgs,
83       llvm::opt::ArgStringList &CC1Args) const override;
84 
85   void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
86                              llvm::opt::ArgStringList &CC1Args) const override;
87 
88   const char *getDefaultLinker() const override {
89     return getTriple().isMusl() ? "ld.lld" : "hexagon-link";
90   }
91 
92   CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
93 
94   void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
95                            llvm::opt::ArgStringList &CmdArgs) const override;
96 
97   StringRef GetGCCLibAndIncVersion() const { return GCCLibAndIncVersion.Text; }
98 
99   std::string getHexagonTargetDir(
100       const std::string &InstalledDir,
101       const SmallVectorImpl<std::string> &PrefixDirs) const;
102   void getHexagonLibraryPaths(const llvm::opt::ArgList &Args,
103       ToolChain::path_list &LibPaths) const;
104 
105   std::string getCompilerRTPath() const override;
106 
107   static bool isAutoHVXEnabled(const llvm::opt::ArgList &Args);
108   static StringRef GetDefaultCPU();
109   static StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args);
110 
111   static std::optional<unsigned>
112   getSmallDataThreshold(const llvm::opt::ArgList &Args);
113 };
114 
115 } // end namespace toolchains
116 } // end namespace driver
117 } // end namespace clang
118 
119 #endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_HEXAGON_H
120