most of this is plumbing to get CompileOptions down into 
CodeGenModule.  Once there, add a new NoCommon option to
it and implement -fno-common.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67735 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/clang-cc/Backend.cpp b/tools/clang-cc/Backend.cpp
index 459bd69..c5eeb64 100644
--- a/tools/clang-cc/Backend.cpp
+++ b/tools/clang-cc/Backend.cpp
@@ -85,7 +85,7 @@
       OutputFile(outfile), 
       LLVMIRGeneration("LLVM IR Generation Time"),
       CodeGenerationTime("Code Generation Time"),
-      Gen(CreateLLVMCodeGen(Diags, langopts, InputFile, compopts.DebugInfo)),
+      Gen(CreateLLVMCodeGen(Diags, InputFile, compopts)),
       TheModule(0), TheTargetData(0), AsmOutStream(0), ModuleProvider(0),
       CodeGenPasses(0), PerModulePasses(0), PerFunctionPasses(0) {