Bug 918031 - SpiderMonkey: Delete no-op branches. r=sstangl
Bug 918031 - IonMonkey: Make the lowering for neg more consistent across the types. r=sstangl
Bug 918031 - IonMonkey: Use useRegisterAtStart for LUnbox and LUnboxDouble on x64. r=sstangl
Bug 918031 - SpiderMonkey: Simplify trivial effective address computations to simple moves. r=sstangl