An Operation Rearrangement Technique forPower Optimization in VLIW Instruction Fetch \Lambda

Abstract In VLIW machines where a single instruction containsmultiple operations, the power consumption during instruction fetches varies significantly depending on how the oper-ations are arranged within the instruction. In this paper, we describe a post-pass operation rearrangement method thatreduces the power consumption from the instruction-fetch datapath. The proposed method modifies operation place-ment orders within VLIW instructions so that the switching activity between successive instruction fetches is minimized.Our experiment shows that the switching activity can be reduced by 34 % on average for benchmark programs