[PATCH] D133300: [InstCombine] Matrix multiplication negation optimisation

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

> Currently if fmul has other uses we will still use the negated ops in the multiplication

I don't think that's correct - there are no use restrictions on this transform:
https://github.com/llvm/llvm-project/blob/24e1736d84fd0fb45097245706a523c3398beb69/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp#L453


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https://reviews.llvm.org/D133300