Re: [RFC][PATCH 0/3] gcc work-around and math128

["H. Peter Anvin" <hpa@xxxxxxxxx>]

On 04/24/2012 10:22 AM, H. Peter Anvin wrote:
> On 04/24/2012 09:10 AM, Peter Zijlstra wrote:
>>
>> So far its just mult, add and cmp for u128, no divisions quite yet. I realize
>> that on 32bit archs mult_u128 will result in like 8 multiplication
>> instructions that's still nowhere near the most expensive thing ever.
>>
> 
> Please add shifts, at the very least.
> 

Oh, and a constant constructor.

	-hpa

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