Uros Bizjak <ubiz...@gmail.com> 于2020年10月14日周三 下午4:42写道：
> On Wed, Oct 14, 2020 at 10:34 AM Hongyu Wang <wwwhhhyyy...@gmail.com>
> wrote:
> >
> > >
> > > Please also add -muintr to g++.dg/other/i386-{2,3}.C and
> > > gcc.target/i386-sse-{12,13,14,22,23}.c. This will test new intrinsics
> > > header.
> > >
> >
> > Thanks for your review. We found that without adding -muintr, the
> intrinsics header could also be tested. Make-check for these file all get
> passed.
> >
> > And there is no intrinsic/builtin with const int parameter. So we remove
> -muintr from these files.
>
> Can your double check that relevant instructions are indeed generated?
> Without -muintr, relevant patterns in i386.md are effectively blocked,
> and perhaps a call to __builtin_ia32_* is generated instead.
>
Yes, in sse-14.s we have
_clui:
.LFB136:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
clui
nop
popq %rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
>
> Uros.
>
--
Regards,
Hongyu, Wang
