[PATCH v2 2/2] x86/APX: support JMPABS also in assembler

[Jan Beulich]

On 19.10.2024 00:40, H.J. Lu wrote:
> On Fri, Oct 18, 2024, 8:08 PM Jan Beulich <jbeulich@suse.com> wrote:
>> @@ -8361,10 +8380,10 @@ optimize_disp (const insn_template *t)
>>         }
>>      }
>>
>> -  /* Don't optimize displacement for movabs since it only takes 64bit
>> -     displacement.  */
>> +  /* Don't optimize displacement for movabs / jmpabs since they only take
>> +     64-bit displacement.  */
>>    if (pp.disp_encoding > disp_encoding_8bit
>> -      || (flag_code == CODE_64BIT && t->mnem_off == MN_movabs))
>> +      || t->mnem_off == MN_movabs || t->mnem_off == MN_jmpabs)
>>
> 
> Is this needed for AT&T syntax?

No, but the check is benign there and hence adding yet another part to
the conditional would only be detrimental to performance, without
gaining us anything.

> Is there 64bit displacement in the spec?

As before - that depends on how one reads the spec.

Jan