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 GnuTool {
24 public:
25   Assembler(const ToolChain &TC)
26       : GnuTool("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 GnuTool {
39 public:
40   Linker(const ToolChain &TC) : GnuTool("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::opt::ArgList &Args,
54                               std::vector<StringRef> &Features);
55 
56 } // end namespace hexagon.
57 } // end namespace tools
58 
59 namespace toolchains {
60 
61 class LLVM_LIBRARY_VISIBILITY HexagonToolChain : public Linux {
62 protected:
63   GCCVersion GCCLibAndIncVersion;
64   Tool *buildAssembler() const override;
65   Tool *buildLinker() const override;
66 
67   unsigned getOptimizationLevel(const llvm::opt::ArgList &DriverArgs) const;
68 
69 public:
70   HexagonToolChain(const Driver &D, const llvm::Triple &Triple,
71                    const llvm::opt::ArgList &Args);
72   ~HexagonToolChain() override;
73 
74   void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
75                              llvm::opt::ArgStringList &CC1Args,
76                              Action::OffloadKind DeviceOffloadKind) const override;
77   void
78   AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
79                             llvm::opt::ArgStringList &CC1Args) const override;
80   void addLibStdCxxIncludePaths(
81       const llvm::opt::ArgList &DriverArgs,
82       llvm::opt::ArgStringList &CC1Args) const override;
83 
84   const char *getDefaultLinker() const override { return "hexagon-link"; }
85 
86   CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
87 
88   StringRef GetGCCLibAndIncVersion() const { return GCCLibAndIncVersion.Text; }
89   bool IsIntegratedAssemblerDefault() const override {
90     return true;
91   }
92 
93   std::string getHexagonTargetDir(
94       const std::string &InstalledDir,
95       const SmallVectorImpl<std::string> &PrefixDirs) const;
96   void getHexagonLibraryPaths(const llvm::opt::ArgList &Args,
97       ToolChain::path_list &LibPaths) const;
98 
99   static bool isAutoHVXEnabled(const llvm::opt::ArgList &Args);
100   static const StringRef GetDefaultCPU();
101   static const StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args);
102 
103   static Optional<unsigned> getSmallDataThreshold(
104       const llvm::opt::ArgList &Args);
105 };
106 
107 } // end namespace toolchains
108 } // end namespace driver
109 } // end namespace clang
110 
111 #endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_HEXAGON_H
112