VedantParanjape wrote:

> This is a canonicalize introducing transformation. If %arg0 is a denormal, 
> and the transformed result will be flushed but it wouldn't in the original

that's a fair point, I was not aware of this while working. Will having a 
flush-all attribute on this instruction guarantee FTZ even in the backend?

https://github.com/llvm/llvm-project/pull/159652
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