Add support for generating (very basic) C++ destructors. These aren't called by anything yet.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69343 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Mangle.h b/lib/CodeGen/Mangle.h
index a8ca09d..77cbd97 100644
--- a/lib/CodeGen/Mangle.h
+++ b/lib/CodeGen/Mangle.h
@@ -27,6 +27,7 @@
 namespace clang {
   class ASTContext;
   class CXXConstructorDecl;
+  class CXXDestructorDecl;
   class NamedDecl;
   class VarDecl;
   
@@ -36,6 +37,8 @@
                            llvm::raw_ostream &os);
   void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
                      ASTContext &Context, llvm::raw_ostream &os);
+  void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type,
+                     ASTContext &Context, llvm::raw_ostream &os);
 }
 
 #endif