On 6/13/24 5:40 AM, Manolis Tsamis wrote:
Could you please run the v3 with your tester? I assume some of the
additional fixes introduced may clear some of the other issues.
Will do.
jeff
On Sun, Jun 9, 2024 at 5:29 PM Jeff Law wrote:
>
>
>
> On 6/7/24 4:31 PM, Jeff Law wrote:
>
> >
> > I've actually added it to my tester just to see if there's any fallout.
> > It'll take a week to churn through the long running targets that
> > bootstrap in QEMU, but the crosses should have data M
On 6/12/24 12:47 AM, Richard Biener wrote:
One of the points I wanted to make is that sched1 can make quite a
difference as to the relative distance of the store and load and
we have the instruction window the pass considers when scanning
(possibly driven by target uarch details). So doing
On Mon, Jun 10, 2024 at 9:27 PM Philipp Tomsich
wrote:
>
> On Mon, 10 Jun 2024 at 20:03, Jeff Law wrote:
> >
> >
> >
> > On 6/10/24 1:55 AM, Manolis Tsamis wrote:
> >
> > >>
> > > There was an older submission of a load-pair specific pass but this is
> > > a complete reimplementation and indeed s
On Tue, 11 Jun 2024, Jeff Law wrote:
>
>
> On 6/11/24 7:52 AM, Philipp Tomsich wrote:
> > On Tue, 11 Jun 2024 at 15:37, Jeff Law wrote:
> >>
> >>
> >>
> >> On 6/11/24 1:22 AM, Richard Biener wrote:
> >>
> Absolutely. But forwarding from a smaller store to a wider load is
> painful
>
On 6/11/24 7:52 AM, Philipp Tomsich wrote:
On Tue, 11 Jun 2024 at 15:37, Jeff Law wrote:
On 6/11/24 1:22 AM, Richard Biener wrote:
Absolutely. But forwarding from a smaller store to a wider load is painful
from a hardware standpoint and if we can avoid it from a codegen standpoint,
we
On Tue, 11 Jun 2024 at 15:37, Jeff Law wrote:
>
>
>
> On 6/11/24 1:22 AM, Richard Biener wrote:
>
> >> Absolutely. But forwarding from a smaller store to a wider load is
> >> painful
> >> from a hardware standpoint and if we can avoid it from a codegen
> >> standpoint,
> >> we should.
> >
> >
On 6/11/24 1:22 AM, Richard Biener wrote:
Absolutely. But forwarding from a smaller store to a wider load is painful
from a hardware standpoint and if we can avoid it from a codegen standpoint,
we should.
Note there's also the possibility to increase the distance between the
store and the
On Mon, 10 Jun 2024, Jeff Law wrote:
>
>
> On 6/10/24 1:55 AM, Manolis Tsamis wrote:
>
> >>
> > There was an older submission of a load-pair specific pass but this is
> > a complete reimplementation and indeed significantly more general.
> > Apart from being target independant, it addresses a n
On 6/10/24 12:27 PM, Philipp Tomsich wrote:
This change is what I briefly hinted as "the complete solution" that
we had on the drawing board when we briefly talked last November in
Santa Clara.
I haven't any recollection of that part of the discussion, but I was a
bit frazzled as you probab
On Mon, 10 Jun 2024 at 20:03, Jeff Law wrote:
>
>
>
> On 6/10/24 1:55 AM, Manolis Tsamis wrote:
>
> >>
> > There was an older submission of a load-pair specific pass but this is
> > a complete reimplementation and indeed significantly more general.
> > Apart from being target independant, it addre
On 6/10/24 1:55 AM, Manolis Tsamis wrote:
There was an older submission of a load-pair specific pass but this is
a complete reimplementation and indeed significantly more general.
Apart from being target independant, it addresses a number of
important restrictions and can handle multiple st
On Sun, Jun 9, 2024 at 5:29 PM Jeff Law wrote:
>
>
>
> On 6/7/24 4:31 PM, Jeff Law wrote:
>
> >
> > I've actually added it to my tester just to see if there's any fallout.
> > It'll take a week to churn through the long running targets that
> > bootstrap in QEMU, but the crosses should have data M
On Sat, Jun 8, 2024 at 1:31 AM Jeff Law wrote:
>
>
>
> On 6/6/24 4:10 AM, Manolis Tsamis wrote:
> > This pass detects cases of expensive store forwarding and tries to avoid
> > them
> > by reordering the stores and using suitable bit insertion sequences.
> > For example it can transform this:
> >
On Fri, 7 Jun 2024, Jeff Law wrote:
>
>
> On 6/6/24 4:10 AM, Manolis Tsamis wrote:
> > This pass detects cases of expensive store forwarding and tries to avoid
> > them
> > by reordering the stores and using suitable bit insertion sequences.
> > For example it can transform this:
> >
> >
On 6/7/24 4:31 PM, Jeff Law wrote:
I've actually added it to my tester just to see if there's any fallout.
It'll take a week to churn through the long running targets that
bootstrap in QEMU, but the crosses should have data Monday.
The first round naturally didn't trigger anything because t
On 6/6/24 4:10 AM, Manolis Tsamis wrote:
This pass detects cases of expensive store forwarding and tries to avoid them
by reordering the stores and using suitable bit insertion sequences.
For example it can transform this:
strbw2, [x1, 1]
ldr x0, [x1] # Expensive stor
17 matches
Mail list logo
