Add support for mangling C++ constructors. Review appreciated (I'm looking at you, Doug)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69150 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Mangle.h b/lib/CodeGen/Mangle.h
index b3f88b0..a8ca09d 100644
--- a/lib/CodeGen/Mangle.h
+++ b/lib/CodeGen/Mangle.h
@@ -18,12 +18,15 @@
 #ifndef LLVM_CLANG_CODEGEN_MANGLE_H
 #define LLVM_CLANG_CODEGEN_MANGLE_H
 
+#include "CGCXX.h"
+
 namespace llvm {
   class raw_ostream;
 }
 
 namespace clang {
   class ASTContext;
+  class CXXConstructorDecl;
   class NamedDecl;
   class VarDecl;
   
@@ -31,6 +34,8 @@
                   llvm::raw_ostream &os);
   void mangleGuardVariable(const VarDecl *D, ASTContext &Context,
                            llvm::raw_ostream &os);
+  void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
+                     ASTContext &Context, llvm::raw_ostream &os);
 }
 
 #endif