[15] RFR (S): 8241597: x86: Remove MMX support

[Vladimir Ivanov]

Thanks for the reviews, Vladimir & Claes.

Best regards,
Vladimir Ivanov

On 25.03.2020 20:20, Vladimir Kozlov wrote:
> Good.
> 
> Thanks,
> Vladimir
> 
> On 3/25/20 7:11 AM, Vladimir Ivanov wrote:
>> Forgot to include bug id in the subject. Fixed.
>>
>> Best regards,
>> Vladimir Ivanov
>>
>> On 25.03.2020 17:00, Vladimir Ivanov wrote:
>>> http://cr.openjdk.java.net/~vlivanov/8241597/webrev.00/
>>> https://bugs.openjdk.java.net/browse/JDK-8241597
>>>
>>> MMX is not used in x86-64 code.
>>>
>>> Instead of making relevant code 32-bit only, I propose to remove all 
>>> usages from both x86-64 and x86-32 specific code. (The only piece 
>>> left is Assembler::emms() which is used in 
>>> MacroAssembler::empty_FPU_stack().)
>>>
>>> Also, got rid of VM_Version::supports_mmx_ext() along the way.
>>>
>>> Testing: hs-tier1,hs-tier2, successfully built x86-32 (just a build, 
>>> no additional testing performed)
>>>
>>> Thanks!
>>>
>>> Best regards,
>>> Vladimir Ivanov