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


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39795 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CodeGenModule.h b/CodeGen/CodeGenModule.h
index 885fb97..9d85470 100644
--- a/CodeGen/CodeGenModule.h
+++ b/CodeGen/CodeGenModule.h
@@ -27,6 +27,7 @@
   class ASTContext;
   class FunctionDecl;
   class Decl;
+  class FileVarDecl;
     
 namespace CodeGen {
 
@@ -50,7 +51,8 @@
   
   llvm::Function *getMemCpyFn();
   
-  void EmitFunction(FunctionDecl *FD);
+  void EmitFunction(const FunctionDecl *FD);
+  void EmitGlobalVar(const FileVarDecl *D);
   
   void PrintStats() {}
 };