Messages in this thread | | | Date | Wed, 20 May 2015 07:02:16 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [c++std-parallel-1624] Re: Compilers and RCU readers: Once more unto the breach! |
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On Wed, May 20, 2015 at 02:37:05PM +0100, David Howells wrote: > Paul E. McKenney <paulmck@linux.vnet.ibm.com> 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.
Agreed. Unless of course y writes to x or some such.
Given that there is already code in the Linux kernel relying on dependencies being carried through stores to local variables, this should not be a problem.
Or am I missing something?
Thanx, Paul
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