[PATCH] D59710: [SLP] remove lower limit for forming reduction patterns

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D59710#1440002 <https://reviews.llvm.org/D59710#1440002>, @ABataev wrote:

> It really requires some additional improvvements, because I see a lot of regressions for the cmp instructions. I think, at first you should try to vectorize cmp instructions using the horizontal reductions anf only if it was unsuccessful, you need to try to vectorize the operands of the instruction itself.


@abataev Please can you be more specific on what icmp issues you mean? All I'm mainly seeing is a lot of scalar leftovers that InstCombine/InstSimplify will clean up if we added them as a pass in the tests.


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https://reviews.llvm.org/D59710