Compiler Idiom Recognition and Value Constraint Analysis

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Solution Overview

Problem

Existing compiler optimization techniques struggle to efficiently identify and optimize code patterns, leading to suboptimal performance in computer code execution.

Innovation Solution

A multi-phase idiom recognition process is implemented, which performs code pattern matching and value constraint analysis to identify predefined idioms in computer code, allowing for the replacement of inefficient code segments with optimized alternatives.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional compiler optimization techniques are used, then the implementation is simpler, but the code execution performance is suboptimal

Engineering Contradiction:

Improvecode execution performanceVSAvoidoptimization process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The optimization process is divided into distinct phases: pattern matching phase and value constraint analysis phase. The pattern matching phase identifies potential idioms through template matching, while the value constraint analysis phase verifies whether the identified patterns satisfy required conditions. This segmentation allows complex optimization to be broken into manageable steps, improving both performance and implementability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs preliminary pattern matching to identify potential idiom instances before conducting detailed value constraint analysis. By pre-identifying candidate patterns in the code, the system narrows down the scope of subsequent analysis, making the overall optimization process more efficient while achieving better performance results.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If code pattern matching is performed without value constraint analysis, then the processing is faster, but the precision of idiom identification is reduced

Engineering Contradiction:

Improveidiom identification accuracyVSAvoidoptimization processing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

Pattern matching is performed as a preliminary step to identify candidate idioms, followed by value constraint analysis to verify accuracy. This two-stage approach ensures high identification precision while managing processing time efficiently by only applying detailed analysis to promising candidates.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system applies different levels of analysis to different code regions: pattern matching is applied broadly to identify potential idioms, while value constraint analysis is applied selectively to verify specific candidates. This localized approach ensures high precision where needed while minimizing overall processing time.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12236217B2Transformation of computer code based on idiom recognition and value constraint analysis

Publication Date: 2025.02.25 INTERNATIONAL BUSINESS MACHINE CORPORATION

AI summary

Code pattern matching is performed within computer code to determine whether the computer code includes an idiom from a predefined set of idioms. Based on determining that the computer code includes the idiom, a set of data items of the idiom to be analyzed is determined. The set of data items is analyzed with respect to one or more corresponding values from the computer code based on a set of constraints defined for the idiom to determine whether the set of data items satisfy one or more predefined conditions for the idiom. Based on the analyzing indicating that the one or more predefined conditions are satisfied, one or more code segments of the computer code including the idiom are replaced with replacement code to provide revised computer code.