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...ing the vector reduction matching and other patterns at all. I'm just trying to start the discussion about the larger set of issues here.) -Chandler -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160523/81781e72/attachment.html>

Hi Chandler, Regardless of the canonical form we choose, we need code to match non-canonical associated shuffle sequences and convert them into the canonical form. We also need code to match the pattern where we extractelement on all elements and sum them into this canonical form. This code needs to exist somewhere, so we need to decide whether it exists in the frontend or the backend. Having an