Re: [RFC][PATCH 3/3] math128, x86_64: Implement {mult,add}_u128 in 64bit asm

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To: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Subject: Re: [RFC][PATCH 3/3] math128, x86_64: Implement {mult,add}_u128 in 64bit asm
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Tue, 24 Apr 2012 09:34:12 -0700
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>
In-reply-to: <20120424162224.588822231@chello.nl>
List-id: <linux-arch.vger.kernel.org>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120329 Thunderbird/11.0.1

On 04/24/2012 09:10 AM, Peter Zijlstra wrote:

Are you sure that gcc won't simply generate this code already if given
"unsigned __int128"?

	-hpa
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Follow-Ups:
- Re: [RFC][PATCH 3/3] math128, x86_64: Implement {mult,add}_u128 in 64bit asm
  - From: Peter Zijlstra

References:
- [RFC][PATCH 0/3] gcc work-around and math128
  - From: Peter Zijlstra
- [RFC][PATCH 3/3] math128, x86_64: Implement {mult,add}_u128 in 64bit asm
  - From: Peter Zijlstra

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