[PATCH] D91972: Improve STRICT_FSETCC codegen in absence of no NaN

[Thomas Preud'homme via Phabricator via llvm-commits]

thopre added a comment.

In D91972#2548500 <https://reviews.llvm.org/D91972#2548500>, @SjoerdMeijer wrote:

> In D91972#2548455 <https://reviews.llvm.org/D91972#2548455>, @thopre wrote:
>
>> Don't check for instruction nonan flag since there's none for constrained fcmp
>
> But that check seems useful for float instructions? In other words, can we keep the check for `FPMO->hasNoNaNs()`, but just add some new tests for that?

Constrained FCmp instructions cannot be given fast-math flags in textual IR currently. I'm not sure if there's a way for the flag to be propagated from somewhere else. I'll try to dig a bit more. Bear with me


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https://reviews.llvm.org/D91972