linux-kernel - Re: [PATCH] mips: Remove compiler check in unroll macro

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Date:   Fri, 10 Jul 2020 19:15:40 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Cesar Eduardo Barros <cesarb@...arb.eti.br>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] mips: Remove compiler check in unroll macro

On Fri, Jul 10, 2020 at 03:43:43PM -0700, Linus Torvalds wrote:
> On Fri, Jul 10, 2020 at 3:34 PM Nathan Chancellor
> <natechancellor@...il.com> wrote:
> >
> > Clang 8 was chosen as a minimum version for this check because there
> > were some improvements around __builtin_constant_p in that release. In
> > reality, MIPS was not even buildable until clang 9 so that check was not
> > technically necessary. Just remove all compiler checks and just assume
> > that we have a working compiler.
> 
> Thanks, that looks much nicer.
> 
> Applied.
> 
> I think we could probably remove the (unrelated) clang-8 check in the
> arm side too, but I guess I'll let arm/clang people worry about it.
> 
>             Linus

Yes, we probably should. I'll comment more on that in the other thread.

Thanks for picking up the patch quickly!

Cheers,
Nathan