[llvm] [AMDGPU] Price only the fmul that fuses into an fadd/fsub as free (PR #226009)

[Dmitry Sidorov via llvm-commits]

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+; RUN: opt -passes=slp-vectorizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx942 -pass-remarks=slp-vectorizer -disable-output < %s 2>&1 | FileCheck %s
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MrSidims wrote:

IMHO we could even drop SLP test from this PR - cost model tests are enough.

We do want to add more regression tests in SLP, but that may go in different PR. But I don't have a strong opinion about that, so it's up to you.

https://github.com/llvm/llvm-project/pull/226009