Fix sanity-checking in 'maskUnsigned' code to be more precise:
use or def-and-use operands can be substituted after one def-only
operand has been substituted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7674 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed