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Re: [c++std-parallel-1632] Re: Compilers and RCU readers: Once more unto the breach!


On Wed, May 20, 2015 at 04:54:51PM +0100, Andrew Haley wrote:
> On 05/20/2015 04:46 PM, Will Deacon wrote:
> > I'm not sure... you'd require the compiler to perform static analysis of
> > loops to determine the state of the machine when they exit (if they exit!)
> > in order to show whether or not a dependency is carried to subsequent
> > operations. If it can't prove otherwise, it would have to assume that a
> > dependency *is* carried, and it's not clear to me how it would use this
> > information to restrict any subsequent dependency removing optimisations.
> 
> It'd just convert consume to acquire.

It should not need to, actually.

							Thanx, Paul


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