Factor out Hexagon code to build args.

This patch factor out the code in hexagon::Link::ConstructJob to be reused
in other functions. No functionality change intended.

llvm-svn: 236926
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 186f08e..0be1fa1 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -5444,17 +5444,16 @@
   // The types are (hopefully) good enough.
 }
 
-void hexagon::Link::ConstructJob(Compilation &C, const JobAction &JA,
-                               const InputInfo &Output,
-                               const InputInfoList &Inputs,
-                               const ArgList &Args,
-                               const char *LinkingOutput) const {
+static void constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
+                              const toolchains::Hexagon_TC& ToolChain,
+                              const InputInfo &Output,
+                              const InputInfoList &Inputs,
+                              const ArgList &Args,
+                              ArgStringList &CmdArgs,
+                              const char *LinkingOutput) {
 
-  const toolchains::Hexagon_TC& ToolChain =
-    static_cast<const toolchains::Hexagon_TC&>(getToolChain());
   const Driver &D = ToolChain.getDriver();
 
-  ArgStringList CmdArgs;
 
   //----------------------------------------------------------------------------
   //
@@ -5600,6 +5599,20 @@
     std::string finiObj = useShared ? "/finiS.o" : "/fini.o";
     CmdArgs.push_back(Args.MakeArgString(StartFilesDir + finiObj));
   }
+}
+
+void hexagon::Link::ConstructJob(Compilation &C, const JobAction &JA,
+                               const InputInfo &Output,
+                               const InputInfoList &Inputs,
+                               const ArgList &Args,
+                               const char *LinkingOutput) const {
+
+  const toolchains::Hexagon_TC& ToolChain =
+    static_cast<const toolchains::Hexagon_TC&>(getToolChain());
+
+  ArgStringList CmdArgs;
+  constructHexagonLinkArgs(C, JA, ToolChain, Output, Inputs, Args, CmdArgs,
+                           LinkingOutput);
 
   std::string Linker = ToolChain.GetProgramPath("hexagon-ld");
   C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),