Reduction of Energy Consumption in Processors by Early Detection and Bypassing of Trivial Operations

Provided by: Institute of Electrical & Electronic Engineers
Topic: Hardware
Format: PDF
In this paper, the authors present a new classification of trivial operations in which especially such trivial operations that can be detected early, i.e. at the decode stage, in the pipeline are identified. Their analysis shows that on average as many as 10% of all executed instructions are of this kind across 12 applications from SPEC2000. They find that a majority (indeed 89%) of them are identity-trivial in which at least one of the operands is the identity element - zero or one.

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