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diff --git a/contrib/llvm/tools/clang/lib/Driver/Tools.h b/contrib/llvm/tools/clang/lib/Driver/Tools.h
new file mode 100644
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--- /dev/null
+++ b/contrib/llvm/tools/clang/lib/Driver/Tools.h
@@ -0,0 +1,733 @@
+//===--- Tools.h - Tool Implementations -------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_DRIVER_TOOLS_H
+#define LLVM_CLANG_LIB_DRIVER_TOOLS_H
+
+#include "clang/Driver/Tool.h"
+#include "clang/Driver/Types.h"
+#include "clang/Driver/Util.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Option/Option.h"
+#include "llvm/Support/Compiler.h"
+
+namespace clang {
+  class ObjCRuntime;
+
+namespace driver {
+  class Command;
+  class Driver;
+
+namespace toolchains {
+  class MachO;
+}
+
+namespace tools {
+
+namespace visualstudio {
+  class Compile;
+}
+
+using llvm::opt::ArgStringList;
+
+  /// \brief Clang compiler tool.
+  class LLVM_LIBRARY_VISIBILITY Clang : public Tool {
+  public:
+    static const char *getBaseInputName(const llvm::opt::ArgList &Args,
+                                        const InputInfo &Input);
+    static const char *getBaseInputStem(const llvm::opt::ArgList &Args,
+                                        const InputInfoList &Inputs);
+    static const char *getDependencyFileName(const llvm::opt::ArgList &Args,
+                                             const InputInfoList &Inputs);
+
+  private:
+    void AddPreprocessingOptions(Compilation &C, const JobAction &JA,
+                                 const Driver &D,
+                                 const llvm::opt::ArgList &Args,
+                                 llvm::opt::ArgStringList &CmdArgs,
+                                 const InputInfo &Output,
+                                 const InputInfoList &Inputs) const;
+
+    void AddAArch64TargetArgs(const llvm::opt::ArgList &Args,
+                              llvm::opt::ArgStringList &CmdArgs) const;
+    void AddARMTargetArgs(const llvm::opt::ArgList &Args,
+                          llvm::opt::ArgStringList &CmdArgs,
+                          bool KernelOrKext) const;
+    void AddARM64TargetArgs(const llvm::opt::ArgList &Args,
+                            llvm::opt::ArgStringList &CmdArgs) const;
+    void AddMIPSTargetArgs(const llvm::opt::ArgList &Args,
+                           llvm::opt::ArgStringList &CmdArgs) const;
+    void AddPPCTargetArgs(const llvm::opt::ArgList &Args,
+                          llvm::opt::ArgStringList &CmdArgs) const;
+    void AddR600TargetArgs(const llvm::opt::ArgList &Args,
+                           llvm::opt::ArgStringList &CmdArgs) const;
+    void AddSparcTargetArgs(const llvm::opt::ArgList &Args,
+                            llvm::opt::ArgStringList &CmdArgs) const;
+    void AddSystemZTargetArgs(const llvm::opt::ArgList &Args,
+                              llvm::opt::ArgStringList &CmdArgs) const;
+    void AddX86TargetArgs(const llvm::opt::ArgList &Args,
+                          llvm::opt::ArgStringList &CmdArgs) const;
+    void AddHexagonTargetArgs(const llvm::opt::ArgList &Args,
+                              llvm::opt::ArgStringList &CmdArgs) const;
+
+    enum RewriteKind { RK_None, RK_Fragile, RK_NonFragile };
+
+    ObjCRuntime AddObjCRuntimeArgs(const llvm::opt::ArgList &args,
+                                   llvm::opt::ArgStringList &cmdArgs,
+                                   RewriteKind rewrite) const;
+
+    void AddClangCLArgs(const llvm::opt::ArgList &Args,
+                        llvm::opt::ArgStringList &CmdArgs) const;
+
+    visualstudio::Compile *getCLFallback() const;
+
+    mutable std::unique_ptr<visualstudio::Compile> CLFallback;
+
+  public:
+    Clang(const ToolChain &TC) : Tool("clang", "clang frontend", TC, RF_Full) {}
+
+    bool hasGoodDiagnostics() const override { return true; }
+    bool hasIntegratedAssembler() const override { return true; }
+    bool hasIntegratedCPP() const override { return true; }
+    bool canEmitIR() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  /// \brief Clang integrated assembler tool.
+  class LLVM_LIBRARY_VISIBILITY ClangAs : public Tool {
+  public:
+    ClangAs(const ToolChain &TC) : Tool("clang::as",
+                                        "clang integrated assembler", TC,
+                                        RF_Full) {}
+    void AddMIPSTargetArgs(const llvm::opt::ArgList &Args,
+                           llvm::opt::ArgStringList &CmdArgs) const;
+    bool hasGoodDiagnostics() const override { return true; }
+    bool hasIntegratedAssembler() const override { return false; }
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  /// \brief Base class for all GNU tools that provide the same behavior when
+  /// it comes to response files support
+  class GnuTool : public Tool {
+    virtual void anchor();
+
+  public:
+    GnuTool(const char *Name, const char *ShortName, const ToolChain &TC)
+        : Tool(Name, ShortName, TC, RF_Full, llvm::sys::WEM_CurrentCodePage) {}
+  };
+
+  /// gcc - Generic GCC tool implementations.
+namespace gcc {
+  class LLVM_LIBRARY_VISIBILITY Common : public GnuTool {
+  public:
+    Common(const char *Name, const char *ShortName,
+           const ToolChain &TC) : GnuTool(Name, ShortName, TC) {}
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+
+    /// RenderExtraToolArgs - Render any arguments necessary to force
+    /// the particular tool mode.
+    virtual void
+        RenderExtraToolArgs(const JobAction &JA,
+                            llvm::opt::ArgStringList &CmdArgs) const = 0;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Preprocess : public Common {
+  public:
+    Preprocess(const ToolChain &TC) : Common("gcc::Preprocess",
+                                             "gcc preprocessor", TC) {}
+
+    bool hasGoodDiagnostics() const override { return true; }
+    bool hasIntegratedCPP() const override { return false; }
+
+    void RenderExtraToolArgs(const JobAction &JA,
+                             llvm::opt::ArgStringList &CmdArgs) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Compile : public Common  {
+  public:
+    Compile(const ToolChain &TC) : Common("gcc::Compile",
+                                          "gcc frontend", TC) {}
+
+    bool hasGoodDiagnostics() const override { return true; }
+    bool hasIntegratedCPP() const override { return true; }
+
+    void RenderExtraToolArgs(const JobAction &JA,
+                             llvm::opt::ArgStringList &CmdArgs) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Link : public Common  {
+  public:
+    Link(const ToolChain &TC) : Common("gcc::Link",
+                                       "linker (via gcc)", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void RenderExtraToolArgs(const JobAction &JA,
+                             llvm::opt::ArgStringList &CmdArgs) const override;
+  };
+} // end namespace gcc
+
+namespace hexagon {
+  // For Hexagon, we do not need to instantiate tools for PreProcess, PreCompile and Compile.
+  // We simply use "clang -cc1" for those actions.
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("hexagon::Assemble",
+      "hexagon-as", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void RenderExtraToolArgs(const JobAction &JA,
+                             llvm::opt::ArgStringList &CmdArgs) const;
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool {
+  public:
+    Link(const ToolChain &TC) : GnuTool("hexagon::Link",
+      "hexagon-ld", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    virtual void RenderExtraToolArgs(const JobAction &JA,
+                                     llvm::opt::ArgStringList &CmdArgs) const;
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace hexagon.
+
+namespace arm {
+  StringRef getARMTargetCPU(const llvm::opt::ArgList &Args,
+                            const llvm::Triple &Triple);
+  const StringRef getARMArch(const llvm::opt::ArgList &Args,
+                             const llvm::Triple &Triple);
+  const char* getARMCPUForMArch(const llvm::opt::ArgList &Args,
+                                const llvm::Triple &Triple);
+  const char* getLLVMArchSuffixForARM(StringRef CPU, StringRef Arch);
+
+  void appendEBLinkFlags(const llvm::opt::ArgList &Args, ArgStringList &CmdArgs, const llvm::Triple &Triple);
+}
+
+namespace mips {
+  typedef enum {
+    NanLegacy = 1,
+    Nan2008 = 2
+  } NanEncoding;
+  NanEncoding getSupportedNanEncoding(StringRef &CPU);
+  void getMipsCPUAndABI(const llvm::opt::ArgList &Args,
+                        const llvm::Triple &Triple, StringRef &CPUName,
+                        StringRef &ABIName);
+  bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value);
+  bool isUCLibc(const llvm::opt::ArgList &Args);
+  bool isNaN2008(const llvm::opt::ArgList &Args, const llvm::Triple &Triple);
+  bool isFPXXDefault(const llvm::Triple &Triple, StringRef CPUName,
+                     StringRef ABIName);
+}
+
+namespace ppc {
+  bool hasPPCAbiArg(const llvm::opt::ArgList &Args, const char *Value);
+}
+
+  /// cloudabi -- Directly call GNU Binutils linker
+namespace cloudabi {
+class LLVM_LIBRARY_VISIBILITY Link : public GnuTool {
+public:
+  Link(const ToolChain &TC) : GnuTool("cloudabi::Link", "linker", TC) {}
+
+  bool hasIntegratedCPP() const override { return false; }
+  bool isLinkJob() const override { return true; }
+
+  void ConstructJob(Compilation &C, const JobAction &JA,
+                    const InputInfo &Output, const InputInfoList &Inputs,
+                    const llvm::opt::ArgList &TCArgs,
+                    const char *LinkingOutput) const override;
+};
+} // end namespace cloudabi
+
+namespace darwin {
+  llvm::Triple::ArchType getArchTypeForMachOArchName(StringRef Str);
+  void setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str);
+
+  class LLVM_LIBRARY_VISIBILITY MachOTool : public Tool {
+    virtual void anchor();
+  protected:
+    void AddMachOArch(const llvm::opt::ArgList &Args,
+                       llvm::opt::ArgStringList &CmdArgs) const;
+
+    const toolchains::MachO &getMachOToolChain() const {
+      return reinterpret_cast<const toolchains::MachO&>(getToolChain());
+    }
+
+  public:
+  MachOTool(
+      const char *Name, const char *ShortName, const ToolChain &TC,
+      ResponseFileSupport ResponseSupport = RF_None,
+      llvm::sys::WindowsEncodingMethod ResponseEncoding = llvm::sys::WEM_UTF8,
+      const char *ResponseFlag = "@")
+      : Tool(Name, ShortName, TC, ResponseSupport, ResponseEncoding,
+             ResponseFlag) {}
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Assemble : public MachOTool  {
+  public:
+    Assemble(const ToolChain &TC) : MachOTool("darwin::Assemble",
+                                              "assembler", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Link : public MachOTool  {
+    bool NeedsTempPath(const InputInfoList &Inputs) const;
+    void AddLinkArgs(Compilation &C, const llvm::opt::ArgList &Args,
+                     llvm::opt::ArgStringList &CmdArgs,
+                     const InputInfoList &Inputs) const;
+
+  public:
+    Link(const ToolChain &TC) : MachOTool("darwin::Link", "linker", TC,
+                                          RF_FileList, llvm::sys::WEM_UTF8,
+                                          "-filelist") {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Lipo : public MachOTool  {
+  public:
+    Lipo(const ToolChain &TC) : MachOTool("darwin::Lipo", "lipo", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Dsymutil : public MachOTool  {
+  public:
+    Dsymutil(const ToolChain &TC) : MachOTool("darwin::Dsymutil",
+                                              "dsymutil", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isDsymutilJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY VerifyDebug : public MachOTool  {
+  public:
+    VerifyDebug(const ToolChain &TC) : MachOTool("darwin::VerifyDebug",
+                                                 "dwarfdump", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+}
+
+  /// openbsd -- Directly call GNU Binutils assembler and linker
+namespace openbsd {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("openbsd::Assemble", "assembler",
+                                         TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+  public:
+    Link(const ToolChain &TC) : GnuTool("openbsd::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace openbsd
+
+  /// bitrig -- Directly call GNU Binutils assembler and linker
+namespace bitrig {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("bitrig::Assemble", "assembler",
+                                         TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+  public:
+    Link(const ToolChain &TC) : GnuTool("bitrig::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace bitrig
+
+  /// freebsd -- Directly call GNU Binutils assembler and linker
+namespace freebsd {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("freebsd::Assemble", "assembler",
+                                         TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+  public:
+    Link(const ToolChain &TC) : GnuTool("freebsd::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace freebsd
+
+  /// netbsd -- Directly call GNU Binutils assembler and linker
+namespace netbsd {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+
+  public:
+    Assemble(const ToolChain &TC)
+      : GnuTool("netbsd::Assemble", "assembler", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+
+  public:
+    Link(const ToolChain &TC)
+      : GnuTool("netbsd::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace netbsd
+
+  /// Directly call GNU Binutils' assembler and linker.
+namespace gnutools {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("GNU::Assemble", "assembler", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+  public:
+    Link(const ToolChain &TC) : GnuTool("GNU::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+}
+
+namespace nacltools {
+  class LLVM_LIBRARY_VISIBILITY AssembleARM : public gnutools::Assemble  {
+  public:
+    AssembleARM(const ToolChain &TC) : gnutools::Assemble(TC) {}
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public Tool  {
+  public:
+    Link(const ToolChain &TC) : Tool("NaCl::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                              const InputInfo &Output,
+                              const InputInfoList &Inputs,
+                              const llvm::opt::ArgList &TCArgs,
+                              const char *LinkingOutput) const override;
+  };
+}
+
+  /// minix -- Directly call GNU Binutils assembler and linker
+namespace minix {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("minix::Assemble", "assembler",
+                                         TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+  public:
+    Link(const ToolChain &TC) : GnuTool("minix::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace minix
+
+  /// solaris -- Directly call Solaris assembler and linker
+namespace solaris {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public Tool  {
+  public:
+    Assemble(const ToolChain &TC) : Tool("solaris::Assemble", "assembler",
+                                         TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public Tool  {
+  public:
+    Link(const ToolChain &TC) : Tool("solaris::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace solaris
+
+  /// dragonfly -- Directly call GNU Binutils assembler and linker
+namespace dragonfly {
+  class LLVM_LIBRARY_VISIBILITY Assemble : public GnuTool  {
+  public:
+    Assemble(const ToolChain &TC) : GnuTool("dragonfly::Assemble", "assembler",
+                                         TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+  class LLVM_LIBRARY_VISIBILITY Link : public GnuTool  {
+  public:
+    Link(const ToolChain &TC) : GnuTool("dragonfly::Link", "linker", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output,
+                      const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace dragonfly
+
+/// Visual studio tools.
+namespace visualstudio {
+  class LLVM_LIBRARY_VISIBILITY Link : public Tool {
+  public:
+    Link(const ToolChain &TC) : Tool("visualstudio::Link", "linker", TC,
+                                     RF_Full, llvm::sys::WEM_UTF16) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Compile : public Tool {
+  public:
+    Compile(const ToolChain &TC) : Tool("visualstudio::Compile", "compiler", TC,
+                                        RF_Full, llvm::sys::WEM_UTF16) {}
+
+    bool hasIntegratedAssembler() const override { return true; }
+    bool hasIntegratedCPP() const override { return true; }
+    bool isLinkJob() const override { return false; }
+
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+
+    std::unique_ptr<Command> GetCommand(Compilation &C, const JobAction &JA,
+                                        const InputInfo &Output,
+                                        const InputInfoList &Inputs,
+                                        const llvm::opt::ArgList &TCArgs,
+                                        const char *LinkingOutput) const;
+  };
+} // end namespace visualstudio
+
+namespace arm {
+  StringRef getARMFloatABI(const Driver &D, const llvm::opt::ArgList &Args,
+                         const llvm::Triple &Triple);
+}
+namespace XCore {
+  // For XCore, we do not need to instantiate tools for PreProcess, PreCompile and Compile.
+  // We simply use "clang -cc1" for those actions.
+  class LLVM_LIBRARY_VISIBILITY Assemble : public Tool {
+  public:
+    Assemble(const ToolChain &TC) : Tool("XCore::Assemble",
+      "XCore-as", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Link : public Tool {
+  public:
+    Link(const ToolChain &TC) : Tool("XCore::Link",
+      "XCore-ld", TC) {}
+
+    bool hasIntegratedCPP() const override { return false; }
+    bool isLinkJob() const override { return true; }
+    void ConstructJob(Compilation &C, const JobAction &JA,
+                      const InputInfo &Output, const InputInfoList &Inputs,
+                      const llvm::opt::ArgList &TCArgs,
+                      const char *LinkingOutput) const override;
+  };
+} // end namespace XCore.
+
+namespace CrossWindows {
+class LLVM_LIBRARY_VISIBILITY Assemble : public Tool {
+public:
+  Assemble(const ToolChain &TC) : Tool("CrossWindows::Assemble", "as", TC) { }
+
+  bool hasIntegratedCPP() const override { return false; }
+
+  void ConstructJob(Compilation &C, const JobAction &JA,
+                    const InputInfo &Output, const InputInfoList &Inputs,
+                    const llvm::opt::ArgList &TCArgs,
+                    const char *LinkingOutput) const override;
+};
+
+class LLVM_LIBRARY_VISIBILITY Link : public Tool {
+public:
+  Link(const ToolChain &TC) : Tool("CrossWindows::Link", "ld", TC, RF_Full) {}
+
+  bool hasIntegratedCPP() const override { return false; }
+  bool isLinkJob() const override { return true; }
+
+  void ConstructJob(Compilation &C, const JobAction &JA,
+                    const InputInfo &Output, const InputInfoList &Inputs,
+                    const llvm::opt::ArgList &TCArgs,
+                    const char *LinkingOutput) const override;
+};
+}
+
+} // end namespace toolchains
+} // end namespace driver
+} // end namespace clang
+
+#endif