Dynamic detection and prediction for store-dependent branches
Abstract:
One embodiment provides an apparatus. The apparatus includes a store direct dependent (SDD) branch prediction circuitry and an SDD management circuitry. The store direct dependent (SDD) branch prediction circuitry is to store an SDD branch table. The SDD branch table is to store at least one record. Each record includes a branch instruction pointer (IP) field, a load IP field, a store IP field, a comparison info field and at least one of a store value field and/or a predicted outcome field. The SDD management circuitry is to populate the SDD branch table at runtime and to override a baseline branch prediction associated with an incoming branch IP with an SDD branch prediction, if the SDD branch table contains a first record populated with the incoming branch IP and at least one of a store value and/or an SDD predicted outcome.
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