From mboxrd@z Thu Jan  1 00:00:00 1970
From: pullip.cho@samsung.com (KyongHo Cho)
Date: Tue, 14 Jun 2011 14:34:29 +0900
Subject: if stmt in kernel source
In-Reply-To: <BANLkTik6zBHLTuXB7oGibhN6_gZF6OJEKA@mail.gmail.com>
References: <BANLkTik6zBHLTuXB7oGibhN6_gZF6OJEKA@mail.gmail.com>
Message-ID: <BANLkTimuB94mqA63YcOs=zZ8gWh-EE9vXA@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Tue, Jun 14, 2011 at 2:27 PM, Venkateswarlu P
<p.venkatesh551@gmail.com> wrote:
> explain about? likely??? and? unlikely??????? constructs??????? used in if
> stmt

AFAIK, it is a hint to the compiler if the condition of conditional
statement is likely to be true or not
for code optimization with branch predictor.