[IA] Add tests for a few other edge cases
[IA] Add tests for a few other edge cases

Test with the last eight bits within the range [7F, FF] and with
lower-case hex letters.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@374124 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm