From: Taylor Blau <me@ttaylorr.com>
Date: Wed, 08 Sep 2021 02:42:11 GMT
Subject: Re: [PATCH] pack-write: skip *.rev work when not writing *.rev
Message-ID: <YTgjA/mwH7wY4oyZ@nand.local>
In-Reply-To: <CAPUEspgh0kbm-ro13Xt2-g-hPoBMK2-34iP2GvK_gaa2bGC+GQ@mail.gmail.com>

On Tue, Sep 07, 2021 at 06:35:10PM -0700, Carlo Arenas wrote:
> On Tue, Sep 7, 2021 at 6:10 PM Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
> > +       if (!(flags & WRITE_REV) && !(flags & WRITE_REV_VERIFY))
> > +               return NULL;
>
> I see this expression matches exactly the logic from 8ef50d9958 which
> is why I presume
> you used it, but the simpler (and logically equivalent[1]) :
>
>   if !((flags & WRITE_REV) || (flags & WRITE_REV_VERIFY))

Even simpler would be:

    if (!(flags & (WRITE_REV | WRITE_REV_VERIFY)))

although with optimization flags other than -O0, it seems that each of
these three produce the same result [1], so I don't think that it
matters much either way ;-).

Thanks,
Taylor

[1]: https://godbolt.org/z/fxxhzEz79