[LVI] NFC. Sink a condition type check from the caller down to getValueFromCondition

This is a preparatory refactoring to support conditions other than ICmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@277479 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed