[PATCH] D156881: [InstSimplify] Check the NonZero for power of two value

[Allen zhong via Phabricator via llvm-commits]

Allen added a comment.

In D156881#4554414 <https://reviews.llvm.org/D156881#4554414>, @goldstein.w.n wrote:

> Is there any indication why this is necessary? The alive2 proof of the original transform seems to allow for INT_MIN: https://alive2.llvm.org/ce/z/yZ_I2a

Thanks, you are right, and we should prevent the case if the mask value is -1, https://alive2.llvm.org/ce/z/WU_j4a


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