search for: gurardwiden

...earlier guard to be "widened" (i.e. made to fail more often) if doing so allows the elimination of a later guard or otherwise is useful to prune possible code paths.  At this point, the basic notion of a guard is fairly well proven with both critical transformations (LoopPredication, GurardWidening) available upstream, and multiple downstream speculative optimizations built on top. As we've explored the design, we've stumbled on a implementation challenge.  Today, guards are modeled as call, not invokes.  As it turns out, LLVM is not terribly good at dealing with potential impl...

...o be "widened" (i.e. made to fail > more often) if doing so allows the elimination of a later guard or > otherwise is useful to prune possible code paths.  At this point, the > basic notion of a guard is fairly well proven with both critical > transformations (LoopPredication, GurardWidening) available upstream, > and multiple downstream speculative optimizations built on top. > > As we've explored the design, we've stumbled on a implementation > challenge.  Today, guards are modeled as call, not invokes.  As it > turns out, LLVM is not terribly good at dealin...