[PATCH] D59335: [RFC] Enable vectorization on Neon even without fast-math

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy added a comment.

In D59335#1431918 <https://reviews.llvm.org/D59335#1431918>, @rengolin wrote:

> I'm curious as to how will we generate these flags.
>
> Is this the responsibility of the front-end, based on command line options, language standards, target-specific?


Yes.

> Or can some middle-end passes change that, too?

Yes, if they know what they're doing. :)

> How do they propagate, and how does it merge with other fast-math flags?
> 
> I could not find a discussion about this on the list, it would be good to solve those before just adding another flag, especially when we already ran out of space. :)

Okay, I'll start an RFC on llvm-dev to avoid having a long discussion here.


Repository:
  rL LLVM

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https://reviews.llvm.org/D59335