linux-kernel - Re: [PATCH] sparse: can do constant folding of __builtin

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Message-ID: <CAK8P3a07tzCBO-eXy9eZ7yxaddRFiMn4+xPqLC64vKWw+QLCBg@mail.gmail.com>
Date:   Fri, 26 Feb 2021 11:38:46 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sparse: can do constant folding of __builtin_bswap*()

On Fri, Feb 26, 2021 at 10:22 AM Luc Van Oostenryck
<luc.vanoostenryck@...il.com> wrote:
>
> Sparse can do constant folding of __builtin_bswap*() since 2017.
> Also, a much recent version of Sparse is needed anyway, see
> commit 6ec4476ac825 ("Raise gcc version requirement to 4.9").
>
> So, remove the comment about sparse not being yet able to constant
> fold __builtin_bswap*() and remove the corresponding test of __CHECKER__.
>
> Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>

Acked-by: Arnd Bergmann <arnd@...db.de>