[PATCH] D113779: [Clang] Add mfp16, mfp16fml and mdotprod flags for ARM target features.

Wed Sep 7 06:56:44 PDT 2022

SjoerdMeijer added a comment.

In D113779#3496589 <https://reviews.llvm.org/D113779#3496589>, @fhahn wrote:

> In D113779#3207936 <https://reviews.llvm.org/D113779#3207936>, @SjoerdMeijer wrote:
>
>>> If anybody has contacts to GCC that would be very helpful. Unfortunately I don't think I will be able to drive this.
>>
>> Ok, I will bring this up internally first with some folks that work on GCC and see what happens. To be continued...
>
> Hi, did you get an update by any chance?

Sorry for the delay. I have just left a message for our GNU toolchain guys with an invitation to add comments here.
I know there are strong opinions that -march should be the only way to set extensions, but personally I am open to use case that it might be difficult to override -march, so I am not blocking this.
I am still of the opinion that options are already an enormous mess, and introducing another way is not making things necessarily better. But if we document this, and add -m options for existing extensions, it may not be worse. So that will be my request for this patch, that we document this somewhere in the Clang docs, and then ideally we see the patches for existing extensions.

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https://reviews.llvm.org/D113779