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gemark
2015 Sep 14
7
RFC: speedups with instruction side-data (ADCE, perhaps others?)
I’ve been playing around with optimizing performance various passes and noticed something about ADCE: it keeps an Alive set that requires a lot of upkeep time-wise, but if each instruction had a /single bit/ of side data (to represent liveness, solely within the pass), the set wouldn’t be needed. I tested this out and observed a ~1/3 reduction in time in ADCE: 1454ms to 982ms according to a