Vector Instruction Consolidation for Processor Pipeline Efficiency
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Solution Overview
Problem
As the number of instructions fed through a processor pipeline increases, power consumption and performance can deteriorate due to inefficiencies in handling vector instructions.
Innovation Solution
Consolidating eligible vector instructions into a single instruction before pipeline execution, using criteria such as opcode pairs, operand matching, and positional proximity, to reduce the number of instructions passing through the pipeline.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of instructions fed through the pipeline increases, then processing throughput may improve, but power consumption increases
Solution Approach 1:
The patent merges multiple eligible vector instructions into a single consolidated instruction before pipeline execution. The fusion unit combines instructions that operate on the same destination operand with compatible opcodes, reducing the total number of instructions that must be fetched, decoded, and executed separately. This consolidation maintains processing throughput by preserving the computational functionality while reducing power consumption by decreasing the number of pipeline stages activated.
2Productivity
If the number of instructions fed through the pipeline increases, then processing capacity may improve, but performance can decrease due to bottlenecks
Solution Approach 1:
By consolidating multiple vector instructions into a single fused instruction, the patent reduces instruction dispatch complexity and pipeline bottleneck formation. The fusion unit identifies and merges instructions with the same destination operand and compatible operations, creating fewer, more efficient pipeline stages that maintain high processing capacity without degrading performance due to excessive instruction overhead.
3Adaptability or versatility
If multiple vector instructions are processed separately, then instruction diversity is maintained, but power consumption and pipeline efficiency deteriorate
Solution Approach 1:
The patent selectively merges vector instructions that share the same destination operand and have compatible opcodes, preserving instruction diversity for operations that require separate execution while consolidating redundant or compatible operations. This selective fusion maintains the necessary adaptability and versatility of the processor while reducing power consumption by eliminating unnecessary separate instruction processing.
Data Source
AI summary
A disclosed method for consolidating eligible vector instructions can include detecting a plurality of vector instructions within a queue of an integrated circuit. The method can also include consolidating the plurality of vector instructions into a single vector instruction based at least in part on the plurality of instructions satisfying one or more criteria. The method can further include forwarding the single vector instruction through a pipeline of the integrated circuit. Various other devices, systems, and methods are also disclosed.