Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753359AbbETNiu (ORCPT ); Wed, 20 May 2015 09:38:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34950 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751504AbbETNir (ORCPT ); Wed, 20 May 2015 09:38:47 -0400 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <20150520133037.GK6776@linux.vnet.ibm.com> References: <20150520133037.GK6776@linux.vnet.ibm.com> <20150520121522.GH6776@linux.vnet.ibm.com> <20150520005510.GA23559@linux.vnet.ibm.com> <20150520024148.GD6776@linux.vnet.ibm.com> <20150520114745.GC11498@arm.com> <31547.1432127917@warthog.procyon.org.uk> To: paulmck@linux.vnet.ibm.com Cc: dhowells@redhat.com, Will Deacon , Linus Torvalds , Linux Kernel Mailing List , "c++std-parallel@accu.org" , "linux-arch@vger.kernel.org" , "gcc@gcc.gnu.org" , p796231 , "mark.batty@cl.cam.ac.uk" , Peter Zijlstra , Ramana Radhakrishnan , Andrew Morton , Ingo Molnar , "michaelw@ca.ibm.com" Subject: Re: Compilers and RCU readers: Once more unto the breach! MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <31804.1432129025.1@warthog.procyon.org.uk> Date: Wed, 20 May 2015 14:37:05 +0100 Message-ID: <31805.1432129025@warthog.procyon.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 524 Lines: 18 Paul E. McKenney wrote: > I was thinking of "y" as a simple variable, but if it is something more > complex, then the compiler could do this, right? > > char *x; > > y; > x = z; Yeah. I presume it has to maintain the ordering, though. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/