linux-kernel - Re: [PATCH] x86: Micro-optimization in nhmex_rbox_get

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Message-ID: <20140623085521.GM19860@laptop.programming.kicks-ass.net>
Date:	Mon, 23 Jun 2014 10:55:21 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Micro-optimization in nhmex_rbox_get_constraint

On Thu, Jun 19, 2014 at 03:15:31PM +0200, Rasmus Villemoes wrote:
> Flipping the LSB doesn't require four lines of code. This shaves a few
> bytes of the generated code, including a branch.
> 
> Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>

Thanks!
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