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Re: [PATCH] x86: VPEXTRQ/VPINSRQ are unavailable outside of 64-bit mode
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Jan Beulich <jbeulich at suse dot com>
- Cc: "binutils at sourceware dot org" <binutils at sourceware dot org>
- Date: Wed, 15 Jan 2020 14:04:00 -0800
- Subject: Re: [PATCH] x86: VPEXTRQ/VPINSRQ are unavailable outside of 64-bit mode
- References: <61b57483-2057-a6c0-0445-6380791ea569@suse.com>
On Tue, Jan 14, 2020 at 11:35 PM Jan Beulich <jbeulich@suse.com> wrote:
>
> The AVX512DQ patterns lacking a Cpu64 attribute made the memory operand
> forms accepted even outside of 64-bit mode, and this even without any
> {evex} pseudo-prefix (otherwise one could argue that this is an attempt
> to follow one possible, albeit somewhat odd, interpretation of the SDM
> wording to this effect).
>
> For consistency between the various involved templates drop the
> * (now) unnecessary IgnoreSize attributes
> * unnecessary (due to VexW1) Size64 attributes from VEX encoded forms
> * redundant (with Reg64) Qword operand attributes
> uniformly.
>
> gas/
> 2020-01-XX Jan Beulich <jbeulich@suse.com>
>
> * testsuite/gas/i386/avx512dq-inval.l,
> testsuite/gas/i386/avx512dq-inval.s: New.
> * testsuite/gas/i386/i386.exp: Run new test.
>
> opcodes/
> 2020-01-XX Jan Beulich <jbeulich@suse.com>
>
> * i386-opc.tbl (pextrq, pinsrq): Drop IgnoreSize and Qword. Drop
> Size64 from and use VexW1 on SSE2AVX forms.
> (vpextrq, vpinsrq): Drop IgnoreSize and Qword. Drop Size64 from
> VEX-encoded forms. Add Cpu64 to EVEX-encoded forms. Use VexW1.
> * i386-tbl.h: Re-generate.
>
OK.
Thanks.
--
H.J.