On Wed, Jun 17, 2020 at 09:43:53AM +0800, Hongtao Liu via Gcc-patches wrote:
> gcc/ChangeLog:
> PR target/95524
> * config/i386/i386-expand.c
> (ix86_expand_vec_shift_qihi_constant): New function.
> * config/i386/i386-protos.h
> (ix86_expand_vec_shift_qihi_co
Sorry,i mistakenly deleted local mail for
https://gcc.gnu.org/pipermail/gcc-patches/2020-June/548174.html, so i
send an another email.
> What I mean is that op2 is a CONST_INT, which in theory can have any
> HOST_WIDE_INT values.
> By assigning that to unsigned int variable, you are effectively
>
On Tue, Jun 16, 2020 at 10:09:08AM +0800, Hongtao Liu via Gcc-patches wrote:
> > + machine_mode qimode, himode;
> > + unsigned int shift_constant, and_constant, xor_constant;
> > + rtx vec_const_and, vec_const_xor;
> > + rtx tmp, op1_subreg;
> > + rtx (*gen_shift) (rtx, rtx, rtx);
> > + rtx (
On Mon, Jun 15, 2020 at 9:48 PM Jakub Jelinek wrote:
>
> On Mon, Jun 15, 2020 at 09:29:29PM +0800, Hongtao Liu via Gcc-patches wrote:
> > Basically i "copy" this optimization from clang i386 backend, Refer
> > to pr95524 for details.
> > Bootstrap is ok, regression test on i386/x86-64 backend
On Mon, Jun 15, 2020 at 09:29:29PM +0800, Hongtao Liu via Gcc-patches wrote:
> Basically i "copy" this optimization from clang i386 backend, Refer
> to pr95524 for details.
> Bootstrap is ok, regression test on i386/x86-64 backend is ok.
>
> gcc/ChangeLog:
> PR target/95524
> *
Hi:
Basically i "copy" this optimization from clang i386 backend, Refer
to pr95524 for details.
Bootstrap is ok, regression test on i386/x86-64 backend is ok.
gcc/ChangeLog:
PR target/95524
* gcc/config/i386/i386-expand.c
(ix86_expand_vec_shift_qihi_constant): New funct
