Adjustable Write Policies for Branch Prediction Logic

The patent implements dynamic configurability of write policies through control logic that can be programmed after tape-out. The system allows different write policies (e.g., allocating misprediction information to different tables or sides) to be selected and changed during operation, transforming a static hardware implementation into a dynamically adaptable system that maintains high prediction accuracy while gaining flexibility.

The patent changes the parameter of write policy configuration from fixed at manufacturing to variable post-tape-out. By introducing control logic that responds to configuration signals, the system enables parameter changes in how misprediction information is allocated and written to prediction tables, allowing optimization for different applications and workloads without requiring physical hardware changes.

The patent segments the branch prediction system into distinct components: prediction tables, control logic, and configuration interfaces. This segmentation allows the core prediction mechanism to remain simple and manufacturable while the control logic provides programmable flexibility. The separation enables independent optimization of manufacturing simplicity and performance capability.

The patent introduces control logic as an intermediary between the hardware prediction mechanism and the configuration interface. This intermediary layer translates high-level policy selections into specific hardware operations, allowing performance optimization through software-controlled parameters without complicating the fundamental hardware manufacturing process.