On Tue, Nov 17, 2020 at 09:10:53PM +, Will Deacon wrote:
> On Tue, Nov 17, 2020 at 11:31:57AM -0800, Linus Torvalds wrote:
> > On Tue, Nov 17, 2020 at 11:25 AM Jakub Jelinek wrote:
> > >
> > > It would need to be typeof( (typeof(type)) (type) ) to not be that
> > > constrained on what kind of
Am Dienstag, den 17.11.2020, 11:31 -0800 schrieb Linus Torvalds:
> On Tue, Nov 17, 2020 at 11:25 AM Jakub Jelinek wrote:
> >
> > It would need to be typeof( (typeof(type)) (type) ) to not be that
> > constrained on what kind of expressions it accepts as arguments.
>
> Yup.
>
> > Anyway, it won'
On Tue, Nov 17, 2020 at 11:31:57AM -0800, Linus Torvalds wrote:
> On Tue, Nov 17, 2020 at 11:25 AM Jakub Jelinek wrote:
> >
> > It would need to be typeof( (typeof(type)) (type) ) to not be that
> > constrained on what kind of expressions it accepts as arguments.
>
> Yup.
>
> > Anyway, it won't
On Tue, Nov 17, 2020 at 11:13 AM Linus Torvalds
wrote:
>
> > +#define __unqual_typeof(type) typeof( (typeof(type))type )
>
> that's certainly a much nicer version than the existing pre-processor
> expansion from hell.
Oh, and sparse doesn't handle this, and doesn't remove any qualifiers
for the
On Tue, Nov 17, 2020 at 11:25 AM Jakub Jelinek wrote:
>
> It would need to be typeof( (typeof(type)) (type) ) to not be that
> constrained on what kind of expressions it accepts as arguments.
Yup.
> Anyway, it won't work with array types at least,
> int a[10];
> typeof ((typeof (a)) (a)) b;
On Tue, Nov 17, 2020 at 11:13:52AM -0800, Linus Torvalds wrote:
> > +#define __unqual_typeof(type) typeof( (typeof(type))type )
> that's certainly a much nicer version than the existing pre-processor
> expansion from hell.
It would need to be typeof( (typeof(type)) (type) ) to not be that
constr
On Mon, Nov 16, 2020 at 3:11 AM Peter Zijlstra wrote:
>
> XXX: I've only verified the below actually compiles, I've not verified
> the generated code is actually 'correct'.
Well, it was mainly the arm64 code generation for load-acquire and
store-release that wanted this - so it's really the
On Mon, Nov 16, 2020 at 12:23:17PM +, Uecker, Martin wrote:
> > > > Another way to drop qualifiers is using a cast. So you
> > > > can use typeof twice:
> > > >
> > > > typeof((typeof(_var))_var) tmp__;
> > > >
> > > > This also works for non-scalars but this is a GCC extension.
>
> (That c
Am Montag, den 16.11.2020, 12:10 +0100 schrieb Peter Zijlstra:
> ( restoring at least linux-toolcha...@vger.kernel.org, since that
> seems
> to have gone missing )
>
> On Mon, Nov 16, 2020 at 10:11:50AM +0100, Richard Biener wrote:
> > On Sun, Nov 15, 2020 at 11:53 AM Uecker, Martin
> > wrote
On Mon, Nov 16, 2020 at 12:10:56PM +0100, Peter Zijlstra wrote:
> > > Another way to drop qualifiers is using a cast. So you
> > > can use typeof twice:
> > >
> > > typeof((typeof(_var))_var) tmp__;
> > >
> > > This also works for non-scalars but this is a GCC extension.
FWIW, clang seems to supp
( restoring at least linux-toolcha...@vger.kernel.org, since that seems
to have gone missing )
On Mon, Nov 16, 2020 at 10:11:50AM +0100, Richard Biener wrote:
> On Sun, Nov 15, 2020 at 11:53 AM Uecker, Martin
> wrote:
> > > On Wed, Nov 04, 2020 at 07:31:42PM +0100, Uros Bizjak wrote:
> > > >
On Sun, Nov 15, 2020 at 11:53 AM Uecker, Martin
wrote:
>
>
> > On Wed, Nov 04, 2020 at 07:31:42PM +0100, Uros Bizjak wrote:
> > > Hello!
> > >
> > > I was looking at the recent linux patch series [1] where segment
> > > qualifiers (named address spaces) were introduced to handle percpu
> > > varia
> On Wed, Nov 04, 2020 at 07:31:42PM +0100, Uros Bizjak wrote:
> > Hello!
> >
> > I was looking at the recent linux patch series [1] where segment
> > qualifiers (named address spaces) were introduced to handle percpu
> > variables. In the patch [2], the author mentions that:
> >
> > --q--
> > U
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