The Frankenpredictor Stitching Together Nasty Bits of Other Branch Predictors
نویسنده
چکیده
Our branch predictor proposed for the Championship Branch Prediction (CBP) contest is a hybrid/mutation of many different ideas previously proposed in the literature, combined with a few new techniques. The mix of traces requires the predictor to handle both capacity (large tables) and deep correlation extraction (long branch histories), both made difficult by the relatively small hardware budget. We use a gskewed-agree predictor to provide capacity, combined with a path-based neural predictor that simultaneously acts as both a long-history predictor and a fusion/meta-predictor.
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