Teach Type::is[un]SignedIntegerType about enum decls.  This allows the code generator
to emit signed comparisons when needed for enum decl references.  This implements
test/CodeGen/enum.c.  I think enums should be good now.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41572 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed