make switch constant folding a bit stronger, handling a missed case.

llvm-svn: 126638
2 files changed
tree: fd5f0f2c518be7289eb740c9982920c4be5e01f8
  1. clang/
  2. compiler-rt/
  3. debuginfo-tests/
  4. libcxx/
  5. lldb/
  6. llvm/