Re: [RFC][PATCH 3/3] math128, x86_64: Implement {mult,add}_u128 in64bit asm

[H. Peter Anvin]

On 04/24/2012 10:19 AM, Peter Zijlstra wrote:
>>
>> Yes, but this is specific to x86-64.  If gcc can generate the code it
>> can also schedule the code, which it can't for assembly...
> 
> Ok, but are you sure unsigned __int128 works for all gcc versions we
> support?
> 

I have been told __int128 works for all versions of gcc which support
x86-64, but I haven't verified it myself, no.

	-hpa
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