[PATCH] D131028: [AArch64] Fix cost model for FADD vector reduction

Florian Hahn via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Aug 15 07:58:31 PDT 2022


fhahn added a comment.

In D131028#3723097 <https://reviews.llvm.org/D131028#3723097>, @dmgreen wrote:

> It was worse on every CPU I tried it on. I did take some time last week looking at if we could adjust the cost of fma, but it looked like it had issues in itself and I wasn't even sure it would fix the problems with SLP vectorization.

By **it**, do you mean the example you shared?


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  https://reviews.llvm.org/D131028/new/

https://reviews.llvm.org/D131028



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