On Tue, 16 Jul 2024, Richard Biener wrote:
> On Mon, 15 Jul 2024, Jan Hubicka wrote:
>
> > > Currently unaligned YMM and ZMM load and store costs are cheaper than
> > > aligned which causes the vectorizer to purposely mis-align accesses
> > > by adding an alignment prologue. It looks like the un
On Tue, 16 Jul 2024, Jakub Jelinek wrote:
> On Tue, Jul 16, 2024 at 01:04:50PM +0200, Richard Biener wrote:
> > Do you think this needs a new RC?
>
> Guess that depends on if somebody would actually perform testing with that
> option...
... on a Zen4 machine.
I think that's unlikely, let's see
On Tue, Jul 16, 2024 at 01:04:50PM +0200, Richard Biener wrote:
> Do you think this needs a new RC?
Guess that depends on if somebody would actually perform testing with that
option...
Jakub
On Tue, 16 Jul 2024, Richard Biener wrote:
> On Tue, 16 Jul 2024, Jakub Jelinek wrote:
>
> > On Tue, Jul 16, 2024 at 10:55:30AM +0200, Richard Biener wrote:
> > > On Tue, 16 Jul 2024, Jakub Jelinek wrote:
> > >
> > > > On Tue, Jul 16, 2024 at 10:43:27AM +0200, Richard Biener wrote:
> > > > > I'v
On Tue, 16 Jul 2024, Jakub Jelinek wrote:
> On Tue, Jul 16, 2024 at 10:55:30AM +0200, Richard Biener wrote:
> > On Tue, 16 Jul 2024, Jakub Jelinek wrote:
> >
> > > On Tue, Jul 16, 2024 at 10:43:27AM +0200, Richard Biener wrote:
> > > > I've pushed it to trunk now and am running local CPU 2017 to
On Tue, Jul 16, 2024 at 10:55:30AM +0200, Richard Biener wrote:
> On Tue, 16 Jul 2024, Jakub Jelinek wrote:
>
> > On Tue, Jul 16, 2024 at 10:43:27AM +0200, Richard Biener wrote:
> > > I've pushed it to trunk now and am running local CPU 2017 to check for
> > > obvious fallout on Zen4 so we can mak
On Tue, 16 Jul 2024, Jakub Jelinek wrote:
> On Tue, Jul 16, 2024 at 10:43:27AM +0200, Richard Biener wrote:
> > I've pushed it to trunk now and am running local CPU 2017 to check for
> > obvious fallout on Zen4 so we can make 14.2 RC early next week. There's
> > still the question of GCC 11.5 whi
On Tue, Jul 16, 2024 at 10:43:27AM +0200, Richard Biener wrote:
> I've pushed it to trunk now and am running local CPU 2017 to check for
> obvious fallout on Zen4 so we can make 14.2 RC early next week. There's
> still the question of GCC 11.5 which got the backport of zen4 support
> with this "wr
On Mon, 15 Jul 2024, Jan Hubicka wrote:
> > Currently unaligned YMM and ZMM load and store costs are cheaper than
> > aligned which causes the vectorizer to purposely mis-align accesses
> > by adding an alignment prologue. It looks like the unaligned costs
> > were simply left untouched from znve
> Currently unaligned YMM and ZMM load and store costs are cheaper than
> aligned which causes the vectorizer to purposely mis-align accesses
> by adding an alignment prologue. It looks like the unaligned costs
> were simply left untouched from znver3 where they equate the aligned
> costs when twe
Currently unaligned YMM and ZMM load and store costs are cheaper than
aligned which causes the vectorizer to purposely mis-align accesses
by adding an alignment prologue. It looks like the unaligned costs
were simply left untouched from znver3 where they equate the aligned
costs when tweaking alig
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