Introduce the Redeclarable template class, which serves as a base type defining the common interface for Decls that can be redeclared.
Make FunctionDecl and VarDecl use it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76297 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed