On Thu, Sep 17, 2020 at 11:11 PM Hongtao Liu wrote:
>
> On Thu, Sep 17, 2020 at 12:10 PM Jeff Law wrote:
> >
> >
> > On 9/15/20 9:20 PM, Hongtao Liu via Gcc-patches wrote:
> > > Hi:
> > > Rtx cost of sse_to_integer would be used by pass_stv as a
> > > measurement for the scalar-to-vector
On Thu, Sep 17, 2020 at 12:10 PM Jeff Law wrote:
>
>
> On 9/15/20 9:20 PM, Hongtao Liu via Gcc-patches wrote:
> > Hi:
> > Rtx cost of sse_to_integer would be used by pass_stv as a
> > measurement for the scalar-to-vector transformation. As
> >
On 9/15/20 9:20 PM, Hongtao Liu via Gcc-patches wrote:
> Hi:
> Rtx cost of sse_to_integer would be used by pass_stv as a
> measurement for the scalar-to-vector transformation. As
> https://gcc.gnu.org/pipermail/gcc-patches/2019-August/528839.html
> indicates, movement between sse regs and gprs
Thanks.
On Wed, Sep 16, 2020 at 8:54 PM Uros Bizjak wrote:
>
> > gcc/ChangeLog
> >
> > PR target/96861
> > * config/i386/x86-tune-costs.h (skylake_cost): increase rtx
> > cost of sse_to_integer from 2 to 6.
> >
> > gcc/testsuite
> >
> > *
> gcc/ChangeLog
>
> PR target/96861
> * config/i386/x86-tune-costs.h (skylake_cost): increase rtx
> cost of sse_to_integer from 2 to 6.
>
> gcc/testsuite
>
> * gcc.target/i386/pr95021-3.c: Add -mtune=generic.
OK.
Thanks,
Uros.
Hi:
Rtx cost of sse_to_integer would be used by pass_stv as a
measurement for the scalar-to-vector transformation. As
https://gcc.gnu.org/pipermail/gcc-patches/2019-August/528839.html
indicates, movement between sse regs and gprs should be much expensive
than movement inside gprs(which is 2 as
