Re: [PATCH v3] x86: fix handling of 64-bit operand size VPCMPESTR{I,M}

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Fri, Feb 24, 2017 at 1:26 AM, Jan Beulich <JBeulich@suse.com> wrote:
> Just like REX.W affects operand size of the implicit rAX/rDX inputs to
> PCMPESTR{I,M}, VEX.W does for VPCMPESTR{I,M}. Allow Q or L suffixes on
> the instructions.
>
> Similarly the disassembler needs to be adjusted to no longer require
> VEX.W to be zero for the instructions to be valid, and to emit proper
> suffixes.
>
> Note, however, that this doesn't address the problem of there being no
> way to control (at least) {,E}VEX.W for 32- or 16-bit code. Nor does it
> address the problem of the many WIG instructions not getting properly
> disassembled when VEX.W=1.
>
> gas/
> 2017-02-24  Jan Beulich  <jbeulich@suse.com>
>
>         * testsuite/gas/i386/x86-64-avx.s: Add suffixed variants of
>         VPCMPESTR{I,M}.
>         * testsuite/gas/i386/x86-64-sse2avx.s: Likewise.
>         * testsuite/gas/i386/x86-64-sse4_2.s: Add suffixed variants
>         of PCMPESTR{I,M}.
>         * testsuite/gas/i386/ilp32/x86-64-avx-intel.d: Likewise.
>         * testsuite/gas/i386/ilp32/x86-64-avx.d: Likewise.
>         * testsuite/gas/i386/ilp32/x86-64-sse2avx.d: Likewise.
>         * testsuite/gas/i386/ilp32/x86-64-sse4_2-intel.d: Likewise.
>         * testsuite/gas/i386/ilp32/x86-64-sse4_2.d: Likewise.
>         * testsuite/gas/i386/x86-64-avx-intel.d: Likewise.
>         * testsuite/gas/i386/x86-64-avx.d: Likewise.
>         * testsuite/gas/i386/x86-64-sse2avx.d: Likewise.
>         * testsuite/gas/i386/x86-64-sse4_2-intel.d: Likewise.
>         * testsuite/gas/i386/x86-64-sse4_2.d: Likewise.
>
> opcodes/
> 2017-02-24  Jan Beulich  <jbeulich@suse.com>
>
>         * i386-dis.c (PCMPESTR_Fixup): New.
>         (VEX_W_0F3A60_P_2, VEX_W_0F3A61_P_2): Delete.
>         (prefix_table): Use PCMPESTR_Fixup.
>         (vex_len_table): Make VPCMPESTR{I,M} entries leaf ones and use
>         PCMPESTR_Fixup.
>         (vex_w_table): Delete VPCMPESTR{I,M} entries.
>         * i386-opc.tbl (pcmpestri, pcmpestrm, vpcmpestri, vpcmpestrm):
>         Split 64-bit and non-64-bit variants.
>         * opcodes/i386-tbl.h: Re-generate.
>

I can't apply your patch.  Please send your patch as attachment.


-- 
H.J.