implement support for basic codegen of global variables with no initializers.

llvm-svn: 39795
diff --git a/clang/CodeGen/ModuleBuilder.cpp b/clang/CodeGen/ModuleBuilder.cpp
index 16b13d1..e525514 100644
--- a/clang/CodeGen/ModuleBuilder.cpp
+++ b/clang/CodeGen/ModuleBuilder.cpp
@@ -32,6 +32,12 @@
   static_cast<CodeGenModule*>(B)->EmitFunction(D);
 }
 
+/// CodeGenGlobalVar - Emit the specified global variable to LLVM.
+void clang::CodeGen::CodeGenGlobalVar(BuilderTy *Builder, FileVarDecl *D) {
+  static_cast<CodeGenModule*>(Builder)->EmitGlobalVar(D);
+}
+
+
 /// PrintStats - Emit statistic information to stderr.
 ///
 void clang::CodeGen::PrintStats(BuilderTy *B) {