[PATCH] D145578: [AArch64] Cost-model vector splat LD1Rs to avoid unprofitable SLP vectorisation

[Florian Hahn via Phabricator via llvm-commits]

fhahn added a comment.

Just a heads up with are seeing a 10% regression caused by this change in a very SLP sensitive workload (the original source for the `slp-fma-loss.ll` tests). I still have to double check where the slowdown is coming from exactly.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D145578/new/

https://reviews.llvm.org/D145578