David Majnemer 41af60bdc0 [InstCombine] X - 0 is equal to X, not undef
A refactoring made @llvm.ssub.with.overflow.i32(i32 %X, i32 0) transform
into undef instead of %X.

This fixes PR23624.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237968 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-21 23:04:21 +00:00
..