From: Peter Zijlstra <peterz@infradead.org>
To: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: Micro-optimization in nhmex_rbox_get_constraint
Date: Mon, 23 Jun 2014 10:55:21 +0200 [thread overview]
Message-ID: <20140623085521.GM19860@laptop.programming.kicks-ass.net> (raw)
In-Reply-To: <1403183731-15402-1-git-send-email-linux@rasmusvillemoes.dk>
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@rasmusvillemoes.dk>
Thanks!
next prev parent reply other threads:[~2014-06-23 8:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-19 13:15 Rasmus Villemoes
2014-06-23 8:55 ` Peter Zijlstra [this message]
2014-07-05 10:47 ` [tip:perf/core] perf/x86: Micro-optimize nhmex_rbox_get_constraint() tip-bot for Rasmus Villemoes
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