Re: [PATCH] Prefer mempcpy to memcpy on x86_64 target (PR middle-end/81657).

[Jakub Jelinek]

On Mon, Mar 12, 2018 at 09:57:09AM +0100, Martin Liška wrote:
> Hi.
> 
> This is fix for the PR that introduces a new target macro. Using the macro
> one can say that a target has a fast mempcpy and thus it's preferred to be 
> used
> if possible.
> 
> Patch can bootstrap on ppc64le-redhat-linux and survives regression tests.
> I also tested on x86_64-linux-gnu.

I think we shouldn't be adding new target macros, better would be a target
hook that returns this information.

        Jakub