netdev - RE: [PATCH net-next] r8152: simply the arguments

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Message-ID: <0835B3720019904CB8F7AA43166CEEB201A32FCB@RTITMBSV06.realtek.com.tw>
Date:   Fri, 17 Mar 2017 02:59:42 +0000
From:   Hayes Wang <hayeswang@...ltek.com>
To:     David Laight <David.Laight@...LAB.COM>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     nic_swsd <nic_swsd@...ltek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: RE: [PATCH net-next] r8152: simply the arguments

David Laight [mailto:David.Laight@...LAB.COM]
> Sent: Thursday, March 16, 2017 10:28 PM
[...]
> If you are really lucky the compiler will optimise it away.
> Otherwise it will generate another local variable and possibly
> a register spill to stack.

However, I could reduce the time for calculating the address,
because I only calculate it once and save the result to a variable.
Right?

Best Regards,
Hayes