Implement InstCombine/sub.ll:test15:  X % -Y === X % Y

Also, remove X % -1 = 0, because it's not true for unsigneds, and the
signed case is superceeded by this new handling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14637 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed