XCore target: add an xcore toolchain implementation

llvm-svn: 192437
diff --git a/clang/lib/Driver/Tools.h b/clang/lib/Driver/Tools.h
index d6fddd9..4a0626d 100644
--- a/clang/lib/Driver/Tools.h
+++ b/clang/lib/Driver/Tools.h
@@ -627,6 +627,38 @@
   };
 } // end namespace visualstudio
 
+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) {}
+
+    virtual bool hasIntegratedCPP() const { return false; }
+    virtual void ConstructJob(Compilation &C, const JobAction &JA,
+                              const InputInfo &Output,
+                              const InputInfoList &Inputs,
+                              const llvm::opt::ArgList &TCArgs,
+                              const char *LinkingOutput) const;
+  };
+
+  class LLVM_LIBRARY_VISIBILITY Link : public Tool {
+  public:
+    Link(const ToolChain &TC) : Tool("XCore::Link",
+      "XCore-ld", TC) {}
+
+    virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
+    virtual void ConstructJob(Compilation &C, const JobAction &JA,
+                              const InputInfo &Output,
+                              const InputInfoList &Inputs,
+                              const llvm::opt::ArgList &TCArgs,
+                              const char *LinkingOutput) const;
+  };
+} // end namespace XCore.
+
+
 } // end namespace toolchains
 } // end namespace driver
 } // end namespace clang