[llvm] [VPlan] Impl VPlan-based pattern match for ExtendedRed and MulAccRed (NFCI) (PR #113903)

David Green via llvm-commits llvm-commits at lists.llvm.org
Fri Nov 1 02:17:13 PDT 2024


davemgreen wrote:

BTW, I believe this patch is currently changing the scores computed for `reduce.add(ext(mul(ext(...), ext(...))))`, in a way that makes it pick a different VF. I wasn't sure if that was because this was better or not, but I think it is picking different type sizes. https://godbolt.org/z/7TYb8heEM should hopefully show the difference? Let me know if it doesn't.

https://github.com/llvm/llvm-project/pull/113903


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