If a switch condition is constant, don't warn about missing enum cases.
If a switch condition is constant, warn if there's no case for it.

Constant switch conditions do come up in reasonable template code.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104010 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed