[PATCH] D65305: [InstCombine] remove flop from lerp patterns

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In D65305#1601864 <https://reviews.llvm.org/D65305#1601864>, @lebedev.ri wrote:

> I'm not confident about the FP fast-math flags, but the match/transform looks good.


The required 1 is 'reassoc' - it gives us the ability to rearrange terms however we want. We're also requiring 'nsz' to be safe on related factorizations, so I kept that here to be conservative. In practice, if we're allowed to  'reassoc', then we've been given license to go crazy with FP, so all of the other flags are likely in play too (aka 'fast').


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https://reviews.llvm.org/D65305