Hardware Fusion Manager Instruction Merging
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Solution Overview
Problem
Current binary translation systems face inefficiencies due to the need to execute multiple instructions separately, leading to increased instruction scheduling, register allocation, and cache footprint, which can hinder performance and code density.
Innovation Solution
A hardware fusion manager is introduced to fuse multiple instructions into a single instruction, reducing the number of instructions to be executed and optimizing instruction scheduling, register allocation, and cache usage by detecting and combining compatible instructions before decoding and execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple instructions are executed separately in current binary translation systems, then instruction execution follows standard processing, but instruction scheduling complexity, register allocation overhead, and cache footprint increase
Solution Approach 1:
The patent merges multiple separate instructions into a single fused instruction that performs multiple operations (load, zero-extension, and arithmetic operation) in one execution cycle. This combining approach reduces the total number of instructions from three separate operations to one fused operation, thereby reducing instruction scheduling complexity and improving execution efficiency
2Productivity
If multiple instructions are executed separately, then standard instruction processing is maintained, but code density decreases due to increased instruction count
Solution Approach 1:
The fusion manager combines multiple instructions into a single fused instruction, directly reducing the quantity of instructions in the translated code. This merging reduces code size and improves code density while maintaining all necessary functionality through the combined operations within the single instruction
3Ease of operation
If multiple instructions are executed separately, then each instruction can be processed independently, but hardware resource load increases due to more instructions requiring scheduling and execution
Solution Approach 1:
By merging multiple instructions into one fused instruction, the patent reduces the total number of operations that hardware resources must handle. This single fused instruction performs multiple functions (loading data, zero-extending, and arithmetic operation) that would otherwise require three separate instruction processing cycles, thereby reducing hardware resource utilization and energy consumption
Data Source
AI summary
Methods and apparatuses relating to a fusion manager to fuse instructions are described. In one embodiment, a hardware processor includes a hardware binary translator to translate an instruction stream into a translated instruction stream, a hardware fusion manager to fuse multiple instructions of the translated instruction stream into a single fused instruction, a hardware decode unit to decode the single fused instruction into a decoded, single fused instruction, and a hardware execution unit to execute the decoded, single fused instruction.