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On Wed, Jul 31, 2013 at 6:39 PM, JF Bastien <jfb at google.com> wrote: > > You will need to do this in the frontend. The target independent > optimizers are allowed to use the memory model. > > We discussed doing this, and concluded that doing it pre-opt was overly > restrictive on correct code. Doing it post-opt bakes the behavior into the > portable code, so in a way

> You will need to do this in the frontend. The target independent optimizers are allowed to use the memory model. We discussed doing this, and concluded that doing it pre-opt was overly restrictive on correct code. Doing it post-opt bakes the behavior into the portable code, so in a way it'll be reliably broken but won't penalize good code. FWIW it's easy to change from one to