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Note: This post is part of a series on D8 and R8, Android’s new dexer and optimizer, respectively. For an intro to D8 read “Android’s Java 8 support”. For an intro to R8 read “R8 Optimization: Staticization”. The previous post (part 1, part 2) featured R8 performing data-flow analysis of variables in order to determine if they were maybe null, always null, or never null, and then potentially performing dead-code elimination based on that info. Another way to think about that optimization is th...