On Mon, Feb 10, 2014 at 11:48:13AM +0000, Peter Zijlstra wrote: > On Fri, Feb 07, 2014 at 10:02:16AM -0800, Paul E. McKenney wrote: > > As near as I can tell, compiler writers hate the idea of prohibiting > > speculative-store optimizations because it requires them to introduce > > both control and data dependency tracking into their compilers. Many of > > them seem to hate dependency tracking with a purple passion. At least, > > such a hatred would go a long way towards explaining the incomplete > > and high-overhead implementations of memory_order_consume, the long > > and successful use of idioms based on the memory_order_consume pattern > > notwithstanding [*]. ;-) > > Just tell them that because the hardware provides control dependencies > we actually use and rely on them.
s/control/address/ ? Will
