Bug 1057598 - s/warmup/usecount on older release branches. rs=nbp, a=bustage
Bug 1054972 - IonMonkey: Truncation for phis. r=nbp, a=sledru
Bug 1054972 - IonMonkey: GVN: More misc cleanups. r=nbp, a=sledru
Bug 1054972 - IonMonkey: GVN: Avoid setting UseRemoved flags unnecessarily. r=nbp, a=sledru
Bug 1062612 - IonMonkey: Fix cast insertion for truncation of phi operands. r=nbp, a=lmandel
Bug 1063653. r=bhackett, a=sledru