[PATCH] D71358: AMDGPU: Remove denormal subtarget features

Wed Dec 11 10:39:49 PST 2019

b-sumner added a comment.

In D71358#1780083 <https://reviews.llvm.org/D71358#1780083>, @arsenm wrote:

> In D71358#1780059 <https://reviews.llvm.org/D71358#1780059>, @arsenm wrote:
>
> > In D71358#1780038 <https://reviews.llvm.org/D71358#1780038>, @rampitec wrote:
> >
> > > How is it now achieved that we do not support denormals by default before GFX9?
> >
> >
> > This is a frontend decision. clang emits the attribute based on the subtarget preference
>
>
> This is also how it always worked. The backend uniformly treated denormals as off by default

Where is clang going to get the information it needs after this patch?

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  https://reviews.llvm.org/D71358/new/

https://reviews.llvm.org/D71358