"Roger Sayle" writes:
> Hi Richard,
>> Yes, which is why I think the target should claim argument passing happens
> in reg:HI.
>
> Unfortunately, this hits another "feature" of the nvptx backend; it's a
>
> /* Implement TARGET_MODES_TIEABLE_P. */
> bool nvptx_modes_tieable_p (machine_mode,
On 3/14/2022 2:39 AM, Roger Sayle wrote:
The only (other?) possible point of contention is the (arbitrary) decision that
when passing floating point values in a larger integer register, the code is
hardwired to use zero-extension. This in theory could be turned into a target
hook to support
On 3/14/2022 3:09 AM, Richard Biener wrote:
On Mon, 14 Mar 2022, Roger Sayle wrote:
I thought I'd add a few comments that might help reviewers of this patch.
Most importantly, this patch should be completely safe, as both changes
only trigger with FLOAT vs INT size mismatches which
d.
> Cheers,
> Roger
> --
>
> > -Original Message-
> > From: Richard Biener
> > Sent: 14 March 2022 13:28
> > To: Roger Sayle
> > Cc: 'Tom de Vries' ; 'Jeff Law' ;
> > 'Tobias Burnus' ; richard.sandif...@arm.com;
> 'Jeff
> > Law' ; gc
updated as what to
> > > > > > do in that eventuality. If they choose to treat these like
> > > > > > HImode, they'll run into the same issues, as most ABIs pass
> > > > > > HImode in wider word_mode
> > > > registers.
> > > >
hard Biener
> > Sent: 14 March 2022 10:15
> > To: Roger Sayle
> > Cc: 'Tom de Vries' ; 'Jeff Law' ;
> > 'Tobias Burnus' ; richard.sandif...@arm.com;
> 'Jeff
> > Law' ; gcc-patches@gcc.gnu.org
> > Subject: RE: PING**4 - [PATCH] middle-end: Support ABIs that pass F
ose there's targets passing SFmode in a SImode GPR and DFmode
> > > in a DImode GPR (all soft-float targets?), so that already works
somehow.
> > > Why does nvptx choose DImode for SFmode passing then? Can't it
> > > choose (subreg:SI di:..) or so? Does it require zero-extendin
Thanks for thinking about this.
> Roger
> --
>
> > -Original Message-
> > From: Richard Biener
> > Sent: 14 March 2022 09:09
> > To: Roger Sayle
> > Cc: 'Tom de Vries' ; 'Jeff Law' ;
> > 'Tobias Burnus' ; richard.sandif...@arm.com;
> 'Jeff
&
rd.sandif...@arm.com;
'Jeff
> Law' ; gcc-patches@gcc.gnu.org
> Subject: RE: PING**4 - [PATCH] middle-end: Support ABIs that pass FP
values as
> wider integers.
>
> On Mon, 14 Mar 2022, Roger Sayle wrote:
>
> >
> > I thought I'd add a few comments that might help revie
;
> > Tobias Burnus
> > Cc: richard.sandif...@arm.com; Jeff Law ; gcc-
> > patc...@gcc.gnu.org; Roger Sayle
> > Subject: PING**4 - [PATCH] middle-end: Support ABIs that pass FP values as
> > wider integers.
> >
> > On 3/2/22 20:18, Jeff Law via Gcc-patches wro
> Tobias Burnus
> Cc: richard.sandif...@arm.com; Jeff Law ; gcc-
> patc...@gcc.gnu.org; Roger Sayle
> Subject: PING**4 - [PATCH] middle-end: Support ABIs that pass FP values as
> wider integers.
>
> On 3/2/22 20:18, Jeff Law via Gcc-patches wrote:
> >
> >
> &g
On 3/2/22 20:18, Jeff Law via Gcc-patches wrote:
On 2/28/2022 5:54 AM, Richard Biener via Gcc-patches wrote:
On Mon, 28 Feb 2022, Tobias Burnus wrote:
Ping**3
On 23.02.22 09:42, Tobias Burnus wrote:
PING**2 for the ME review or at least comments to that patch,
which fixes a build
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