DragonFly BSD
DragonFly commits List (threaded) for 2011-03
[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]

Re: git: kern.mk: Prevent gcc4.4 from generating SSSE3, SSE4 and AVX instructions


From: Sepherosa Ziehau <sepherosa@xxxxxxxxx>
Date: Wed, 2 Mar 2011 09:17:30 +0800

On Wed, Mar 2, 2011 at 1:35 AM, Thomas E. Spanjaard <tgen@netphreax.net> wrote:
> On 03/01/2011 15:47, Sepherosa Ziehau wrote:
>>     kern.mk: Prevent gcc4.4 from generating SSSE3, SSE4 and AVX instructions
>
> Is this because old binutils versions can't handle the opcodes? SSSE3
> should work, but iirc POPCNT and friends were the stumbling blocks.

I think kernel should not use these instructions at least.

Best Regards,
sephe

-- 
Tomorrow Will Never Die




[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]