On Wed, Jul 31, 2024 at 11:33 AM Richard Biener wrote:
> > > > > > OK. Richard, can you please mention the above in the comment why
> > > > > > XFmode is rejected in the hook?
> > > > > >
> > > > > > Later, we can perhaps benchmark XFmode move vs. generic memory copy
> > > > > > to
> > > > > > g
On Wed, 31 Jul 2024, Jakub Jelinek wrote:
> On Wed, Jul 31, 2024 at 02:43:36PM +0200, Richard Biener wrote:
> > diff --git a/gcc/config/i386/i386-modes.def
> > b/gcc/config/i386/i386-modes.def
> > index 6d8f1946f3a..2cc03e30f13 100644
> > --- a/gcc/config/i386/i386-modes.def
> > +++ b/gcc/config/
On Wed, Jul 31, 2024 at 02:43:36PM +0200, Richard Biener wrote:
> diff --git a/gcc/config/i386/i386-modes.def
> b/gcc/config/i386/i386-modes.def
> index 6d8f1946f3a..2cc03e30f13 100644
> --- a/gcc/config/i386/i386-modes.def
> +++ b/gcc/config/i386/i386-modes.def
> @@ -21,7 +21,7 @@ along with GCC;
On Wed, 31 Jul 2024, Uros Bizjak wrote:
> On Wed, Jul 31, 2024 at 11:33 AM Richard Biener wrote:
> >
> > On Wed, 31 Jul 2024, Uros Bizjak wrote:
> >
> > > On Wed, Jul 31, 2024 at 10:48 AM Richard Biener wrote:
> > > >
> > > > On Wed, 31 Jul 2024, Uros Bizjak wrote:
> > > >
> > > > > On Wed, Jul
On Wed, Jul 31, 2024 at 11:33 AM Richard Biener wrote:
>
> On Wed, 31 Jul 2024, Uros Bizjak wrote:
>
> > On Wed, Jul 31, 2024 at 10:48 AM Richard Biener wrote:
> > >
> > > On Wed, 31 Jul 2024, Uros Bizjak wrote:
> > >
> > > > On Wed, Jul 31, 2024 at 10:24 AM Jakub Jelinek wrote:
> > > > >
> > >
On Wed, 31 Jul 2024, Uros Bizjak wrote:
> On Wed, Jul 31, 2024 at 10:48 AM Richard Biener wrote:
> >
> > On Wed, 31 Jul 2024, Uros Bizjak wrote:
> >
> > > On Wed, Jul 31, 2024 at 10:24 AM Jakub Jelinek wrote:
> > > >
> > > > On Wed, Jul 31, 2024 at 10:11:44AM +0200, Uros Bizjak wrote:
> > > > >
On Wed, Jul 31, 2024 at 10:48 AM Richard Biener wrote:
>
> On Wed, 31 Jul 2024, Uros Bizjak wrote:
>
> > On Wed, Jul 31, 2024 at 10:24 AM Jakub Jelinek wrote:
> > >
> > > On Wed, Jul 31, 2024 at 10:11:44AM +0200, Uros Bizjak wrote:
> > > > OK. Richard, can you please mention the above in the comm
On Wed, 31 Jul 2024, Uros Bizjak wrote:
> On Wed, Jul 31, 2024 at 10:24 AM Jakub Jelinek wrote:
> >
> > On Wed, Jul 31, 2024 at 10:11:44AM +0200, Uros Bizjak wrote:
> > > OK. Richard, can you please mention the above in the comment why
> > > XFmode is rejected in the hook?
> > >
> > > Later, we c
On Wed, Jul 31, 2024 at 10:24 AM Jakub Jelinek wrote:
>
> On Wed, Jul 31, 2024 at 10:11:44AM +0200, Uros Bizjak wrote:
> > OK. Richard, can you please mention the above in the comment why
> > XFmode is rejected in the hook?
> >
> > Later, we can perhaps benchmark XFmode move vs. generic memory cop
On Wed, Jul 31, 2024 at 10:11:44AM +0200, Uros Bizjak wrote:
> OK. Richard, can you please mention the above in the comment why
> XFmode is rejected in the hook?
>
> Later, we can perhaps benchmark XFmode move vs. generic memory copy to
> get some hard data.
My (limited) understanding was that th
On Wed, Jul 31, 2024 at 10:02 AM Hongtao Liu wrote:
> > > > > > On Tue, 30 Jul 2024, Richard Biener wrote:
> > > > > >
> > > > > > > > Oh, and please add a small comment why we don't use XFmode here.
> > > > > > >
> > > > > > > Will do.
> > > > > > >
> > > > > > > /* Do not enable XFmode,
On Wed, Jul 31, 2024 at 3:17 PM Uros Bizjak wrote:
>
> On Wed, Jul 31, 2024 at 9:11 AM Hongtao Liu wrote:
> >
> > On Wed, Jul 31, 2024 at 1:06 AM Uros Bizjak wrote:
> > >
> > > On Tue, Jul 30, 2024 at 3:00 PM Richard Biener wrote:
> > > >
> > > > On Tue, 30 Jul 2024, Alexander Monakov wrote:
>
On Wed, Jul 31, 2024 at 9:11 AM Hongtao Liu wrote:
>
> On Wed, Jul 31, 2024 at 1:06 AM Uros Bizjak wrote:
> >
> > On Tue, Jul 30, 2024 at 3:00 PM Richard Biener wrote:
> > >
> > > On Tue, 30 Jul 2024, Alexander Monakov wrote:
> > >
> > > >
> > > > On Tue, 30 Jul 2024, Richard Biener wrote:
> > >
On Wed, Jul 31, 2024 at 1:06 AM Uros Bizjak wrote:
>
> On Tue, Jul 30, 2024 at 3:00 PM Richard Biener wrote:
> >
> > On Tue, 30 Jul 2024, Alexander Monakov wrote:
> >
> > >
> > > On Tue, 30 Jul 2024, Richard Biener wrote:
> > >
> > > > > Oh, and please add a small comment why we don't use XFmode
On Tue, Jul 30, 2024 at 3:00 PM Richard Biener wrote:
>
> On Tue, 30 Jul 2024, Alexander Monakov wrote:
>
> >
> > On Tue, 30 Jul 2024, Richard Biener wrote:
> >
> > > > Oh, and please add a small comment why we don't use XFmode here.
> > >
> > > Will do.
> > >
> > > /* Do not enable XFmode
On Tue, Jul 30, 2024 at 03:00:49PM +0200, Richard Biener wrote:
> > What mangling fld performs depends on the contents of the FP control
> > word which is awkward.
For float/double loads (FLDS and FLDL) we know format conversion changes
SNaNs to QNaNs, but it's a widening conversion, so e.g. ro
On Tue, Jul 30, 2024 at 03:00:49PM +0200, Richard Biener wrote:
> As Jakub said the padding is already dealt with in the caller
> though I only added that there for convenience since padding is
> problematic in general.
>
> If you think XFmode is safe to transfer 10 bytes we could enable it,
> I g
On Tue, 30 Jul 2024, Alexander Monakov wrote:
>
> On Tue, 30 Jul 2024, Richard Biener wrote:
>
> > > Oh, and please add a small comment why we don't use XFmode here.
> >
> > Will do.
> >
> > /* Do not enable XFmode, there is padding in it and it suffers
> >from normalizatio
On Tue, 30 Jul 2024, Jakub Jelinek wrote:
> On Tue, Jul 30, 2024 at 03:43:25PM +0300, Alexander Monakov wrote:
> >
> > On Tue, 30 Jul 2024, Richard Biener wrote:
> >
> > > > Oh, and please add a small comment why we don't use XFmode here.
> > >
> > > Will do.
> > >
> > > /* Do not en
On Tue, Jul 30, 2024 at 03:43:25PM +0300, Alexander Monakov wrote:
>
> On Tue, 30 Jul 2024, Richard Biener wrote:
>
> > > Oh, and please add a small comment why we don't use XFmode here.
> >
> > Will do.
> >
> > /* Do not enable XFmode, there is padding in it and it suffers
> >
On Tue, 30 Jul 2024, Richard Biener wrote:
> > Oh, and please add a small comment why we don't use XFmode here.
>
> Will do.
>
> /* Do not enable XFmode, there is padding in it and it suffers
>from normalization upon load like SFmode and DFmode when
>not using S
On Tue, 30 Jul 2024, Jakub Jelinek wrote:
> On Tue, Jul 30, 2024 at 02:26:05PM +0200, Richard Biener wrote:
> > > > (Which implies that we should introduce TARGET_I387_MATH to parallel
> > > > TARGET_SSE_MATH some day...)
> > > >
> > > > > + default:
> > > > > + return false;
> > > >
>
On Tue, Jul 30, 2024 at 02:26:05PM +0200, Richard Biener wrote:
> > > (Which implies that we should introduce TARGET_I387_MATH to parallel
> > > TARGET_SSE_MATH some day...)
> > >
> > > > + default:
> > > > + return false;
> > >
> > > We don't want to enable HFmode for transfers?
>
> Ja
On Tue, 30 Jul 2024, Uros Bizjak wrote:
> On Tue, Jul 30, 2024 at 1:07 PM Uros Bizjak wrote:
> >
> > On Tue, Jul 30, 2024 at 12:18 PM Richard Biener wrote:
> > >
> > > The following implements the hook, excluding x87 modes for scalar
> > > and complex float modes.
> > >
> > > Bootstrapped and te
On Tue, Jul 30, 2024 at 1:07 PM Uros Bizjak wrote:
>
> On Tue, Jul 30, 2024 at 12:18 PM Richard Biener wrote:
> >
> > The following implements the hook, excluding x87 modes for scalar
> > and complex float modes.
> >
> > Bootstrapped and tested on x86_64-unknown-linux-gnu.
> >
> > OK?
> >
> > Tha
On Tue, Jul 30, 2024 at 12:18 PM Richard Biener wrote:
>
> The following implements the hook, excluding x87 modes for scalar
> and complex float modes.
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu.
>
> OK?
>
> Thanks,
> Richard.
>
> * i386.cc (TARGET_MODE_CAN_TRANSFER_BITS): Def
The following implements the hook, excluding x87 modes for scalar
and complex float modes.
Bootstrapped and tested on x86_64-unknown-linux-gnu.
OK?
Thanks,
Richard.
* i386.cc (TARGET_MODE_CAN_TRANSFER_BITS): Define.
(ix86_mode_can_transfer_bits): New function.
---
gcc/config/i3
27 matches
Mail list logo
