Apparatus for branch prediction

摘要

A computing system has first and second instruction storing circuits, each instruction storing circuit storing N instructions for parallel output. An instruction dispatch circuit, coupled to the first instruction storing circuit, dispatches L instructions stored in the first instruction storing circuit, wherein L is less than or equal to N. An instruction loading circuit, coupled to the instruction dispatch circuit and to the first and second instruction storing circuits, loads L instructions from the second instruction storing circuit into the first instruction storing circuit after the L instructions are dispatched from the first instruction storing circuit and before further instructions are dispatched from the first instruction storing circuit. On the other hand, an instruction memory stores a plurality of lines of a plurality of instructions, and a branch memory stores a plurality of branch prediction entriesd.