On Thu, Aug 31, 2023 at 11:26:26AM +0200, Richard Biener wrote:
> On Thu, Aug 31, 2023 at 10:25 AM Hongyu Wang via Gcc-patches
> <gcc-patches@gcc.gnu.org> wrote:
> >
> > From: Kong Lingling <lingling.k...@intel.com>
> >
> > Disable EGPR usage for below legacy insns in opcode map2/3 that have vex
> > but no evex counterpart.
> >
> > insn list:
> > 1. phminposuw/vphminposuw
> > 2. ptest/vptest
> > 3. roundps/vroundps, roundpd/vroundpd,
> > roundss/vroundss, roundsd/vroundsd
> > 4. pcmpestri/vpcmpestri, pcmpestrm/vpcmpestrm
> > 5. pcmpistri/vpcmpistri, pcmpistrm/vpcmpistrm
>
> How are GPRs involved in the above? Or did I misunderstand something?
Those instructions allow memory operands, and say vptest (%r18), %xmm7
isn't supported.
Jakub
