[PATCH] D27825: [AVX-512][InstCombine] Teach InstCombine to converted masked vpermv intrinsics into shufflevector instructions

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat Dec 17 09:24:24 PST 2016

craig.topper added a comment.

I think in the worst case we may end up selecting a shuffle with large element size and end up being unable to combine the mask into the instruction. But we've likely removed a constant pool load so that may still be a win.


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