[TLI] isdigit / isascii / toascii param type should match return type (PR30484)

We crash in LibCallSimplifier if we don't check the validity of the function signature properly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282278 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed