Runtime Command Processing for Redundant Memory Access Elimination
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Solution Overview
Problem
Existing compilers fail to accurately optimize redundant memory access instructions due to limitations in static analysis, leading to inefficiencies in program execution.
Innovation Solution
A command processing method and device that perform dynamic analysis during program execution to identify and eliminate redundant memory access instructions, such as read and write instructions, by utilizing a set of pointers to test for alias relationships and thresholds to enhance optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If static analysis is used to optimize redundant memory access instructions, then the compiler can perform optimization during compilation, but the optimization accuracy is insufficient and cannot accurately identify all redundant instructions
Solution Approach 1:
The patent transitions from static analysis to dynamic analysis by inserting probe instructions during program execution. These probes monitor memory access operations in real-time, allowing the system to identify redundant instructions based on actual runtime behavior rather than static code analysis. This dynamic approach significantly improves optimization accuracy while managing complexity through targeted instrumentation.
Solution Approach 2:
The patent introduces probe instructions as intermediary elements between the original memory access instructions and the optimization process. These probes act as mediators that collect runtime information about memory operations, enabling accurate identification of redundant instructions without directly modifying the original program logic. The probes serve as a bridge between static code and dynamic execution behavior.
2Measurement precision
If dynamic analysis with probe instructions is inserted to accurately identify redundant memory access instructions, then optimization accuracy improves, but program execution time increases due to additional instructions
Solution Approach 1:
The patent extracts and eliminates redundant memory access instructions identified through dynamic analysis. By removing these redundant operations from the executed program, the time overhead introduced by probe instructions is offset by the elimination of unnecessary memory operations. This extraction principle ensures that the net execution time is reduced despite the presence of additional probe instructions.
Solution Approach 2:
The patent discards redundant memory access instructions that are identified through dynamic probing. By eliminating these unnecessary operations during execution, the system recovers performance that would otherwise be lost to redundant memory accesses. The probing overhead is justified by the significant time savings from removing redundant operations.
3Productivity
If all memory access instructions are monitored and analyzed during execution, then complete optimization coverage is achieved, but the overhead of monitoring and processing increases significantly
Solution Approach 1:
The patent applies local quality by selectively instrumenting only those memory access instructions that are candidates for optimization rather than monitoring all memory operations uniformly. Probe instructions are strategically inserted at specific locations where redundant accesses are likely to occur, based on static analysis hints or program characteristics. This localized approach achieves comprehensive optimization coverage for relevant instructions while minimizing overall monitoring overhead.
Data Source
AI summary
The present disclosure relates to a command processing method and device. The command processing method includes a determination step and a processing step. In the determination step, when running a program, a determination is made as to whether a loop of the program running satisfies a predetermined condition for executing a process to eliminate a redundant memory access instruction. In the processing step, when it is determined that the loop of the program running satisfies the predetermined condition, the redundant memory access instruction in the loop is executed by the elimination process.