[PATCH] D30865: [AVX-512] If gather mask is all ones, use UNDEF for the source

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Mar 12 11:06:44 PDT 2017

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craig.topper added a comment.

I wonder if we shouldn't keep zeroes to break execution dependency. I don't think the existing undef handling in ExeDependencyFix can handle the early clobber.


https://reviews.llvm.org/D30865

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