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

From: H. Peter Anvin
Date: Tue Apr 24 2012 - 13:22:37 EST

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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.

-hpa

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