From: David Laight <David.Laight@ACULAB.COM>
To: 'Nick Desaulniers' <ndesaulniers@google.com>,
Nathan Chancellor <nathan@kernel.org>
Cc: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Claudiu Beznea <claudiu.beznea@microchip.com>,
Tom Rix <trix@redhat.com>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"llvm@lists.linux.dev" <llvm@lists.linux.dev>
Subject: RE: [PATCH] ASoC: mchp-spdiftx: Fix clang -Wbitfield-constant-conversion
Date: Mon, 15 Aug 2022 09:55:50 +0000 [thread overview]
Message-ID: <24087aa311e84df3a3df3c0e15151580@AcuMS.aculab.com> (raw)
In-Reply-To: <CAKwvOdmZvB_=JTeLg08uMFhEMpWga4FJey50QHjzCv_jMVpwkg@mail.gmail.com>
From: Nick Desaulniers
> Sent: 10 August 2022 22:14
>
> On Tue, Aug 9, 2022 at 6:08 PM Nathan Chancellor <nathan@kernel.org> wrote:
> >
> > A recent change in clang strengthened its -Wbitfield-constant-conversion
> > to warn when 1 is assigned to a 1-bit signed integer bitfield, as it can
> > only be 0 or -1, not 1:
Is there a -Wsigned-bitfield ?
You probably don't ever want the compiler to be generating
the code to sign-propagate a bitfield.
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
WARNING: multiple messages have this Message-ID (diff)
From: David Laight <David.Laight@ACULAB.COM>
To: 'Nick Desaulniers' <ndesaulniers@google.com>,
Nathan Chancellor <nathan@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
Tom Rix <trix@redhat.com>,
"llvm@lists.linux.dev" <llvm@lists.linux.dev>,
Liam Girdwood <lgirdwood@gmail.com>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Mark Brown <broonie@kernel.org>,
Codrin Ciubotariu <codrin.ciubotariu@microchip.com>,
Claudiu Beznea <claudiu.beznea@microchip.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: RE: [PATCH] ASoC: mchp-spdiftx: Fix clang -Wbitfield-constant-conversion
Date: Mon, 15 Aug 2022 09:55:50 +0000 [thread overview]
Message-ID: <24087aa311e84df3a3df3c0e15151580@AcuMS.aculab.com> (raw)
In-Reply-To: <CAKwvOdmZvB_=JTeLg08uMFhEMpWga4FJey50QHjzCv_jMVpwkg@mail.gmail.com>
From: Nick Desaulniers
> Sent: 10 August 2022 22:14
>
> On Tue, Aug 9, 2022 at 6:08 PM Nathan Chancellor <nathan@kernel.org> wrote:
> >
> > A recent change in clang strengthened its -Wbitfield-constant-conversion
> > to warn when 1 is assigned to a 1-bit signed integer bitfield, as it can
> > only be 0 or -1, not 1:
Is there a -Wsigned-bitfield ?
You probably don't ever want the compiler to be generating
the code to sign-propagate a bitfield.
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
WARNING: multiple messages have this Message-ID (diff)
From: David Laight <David.Laight@ACULAB.COM>
To: 'Nick Desaulniers' <ndesaulniers@google.com>,
Nathan Chancellor <nathan@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
Tom Rix <trix@redhat.com>,
"llvm@lists.linux.dev" <llvm@lists.linux.dev>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Codrin Ciubotariu <codrin.ciubotariu@microchip.com>,
Claudiu Beznea <claudiu.beznea@microchip.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: RE: [PATCH] ASoC: mchp-spdiftx: Fix clang -Wbitfield-constant-conversion
Date: Mon, 15 Aug 2022 09:55:50 +0000 [thread overview]
Message-ID: <24087aa311e84df3a3df3c0e15151580@AcuMS.aculab.com> (raw)
In-Reply-To: <CAKwvOdmZvB_=JTeLg08uMFhEMpWga4FJey50QHjzCv_jMVpwkg@mail.gmail.com>
From: Nick Desaulniers
> Sent: 10 August 2022 22:14
>
> On Tue, Aug 9, 2022 at 6:08 PM Nathan Chancellor <nathan@kernel.org> wrote:
> >
> > A recent change in clang strengthened its -Wbitfield-constant-conversion
> > to warn when 1 is assigned to a 1-bit signed integer bitfield, as it can
> > only be 0 or -1, not 1:
Is there a -Wsigned-bitfield ?
You probably don't ever want the compiler to be generating
the code to sign-propagate a bitfield.
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-08-15 9:55 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 1:08 [PATCH] ASoC: mchp-spdiftx: Fix clang -Wbitfield-constant-conversion Nathan Chancellor
2022-08-10 1:08 ` Nathan Chancellor
2022-08-10 1:08 ` Nathan Chancellor
2022-08-10 21:14 ` Nick Desaulniers
2022-08-10 21:14 ` Nick Desaulniers
2022-08-10 21:14 ` Nick Desaulniers
2022-08-15 9:55 ` David Laight [this message]
2022-08-15 9:55 ` David Laight
2022-08-15 9:55 ` David Laight
2022-08-15 16:23 ` Mark Brown
2022-08-15 16:23 ` Mark Brown
2022-08-15 16:23 ` Mark Brown
2022-08-23 15:39 ` Nathan Chancellor
2022-08-23 15:39 ` Nathan Chancellor
2022-08-23 15:39 ` Nathan Chancellor
2022-08-23 16:03 ` Mark Brown
2022-08-23 16:03 ` Mark Brown
2022-08-23 16:03 ` Mark Brown
2022-08-23 16:11 ` Nathan Chancellor
2022-08-23 16:11 ` Nathan Chancellor
2022-08-23 16:11 ` Nathan Chancellor
2022-08-23 18:37 ` Mark Brown
2022-08-23 18:37 ` Mark Brown
2022-08-23 18:37 ` Mark Brown
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