Parallel Compiler Type Checking With Thread Speculation
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Solution Overview
Problem
Dynamically typed programming languages suffer from slow execution due to the lack of variable type information at compile time, leading to increased processing overhead and inefficient code optimization, which conventional solutions fail to adequately address.
Innovation Solution
Implementing a compiler architecture that executes intended code and type check code in parallel via separate threads, utilizing hardware transactional memory and a unified programming model to optimize dynamically typed applications, allowing speculative execution and immediate abortion of tasks upon type check failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If type check code is executed sequentially before intended code, then type inference verification is ensured, but execution speed deteriorates due to processing overhead
Solution Approach 1:
The patent divides the verification process into a separate thread (type check thread) that operates independently from the main execution thread. This segmentation allows type checking to proceed in parallel without blocking the execution of intended code, thereby maintaining both verification reliability and execution speed.
Solution Approach 2:
The patent introduces a temporal dimension by executing type checks in a separate thread concurrently with code execution. Instead of sequential verification, the system uses parallel thread execution to perform type checking in a different temporal dimension, eliminating the trade-off between verification and speed.
2Adaptability or versatility
If generic code path is compiled for dynamically typed languages, then all variable types are handled, but execution efficiency deteriorates compared to optimized code paths
Solution Approach 1:
The patent performs type inference and code optimization in advance during compilation, generating optimized code paths based on predicted types. The type check thread then verifies these predictions at runtime, allowing the system to execute optimized code while maintaining adaptability through fallback mechanisms when type predictions are incorrect.
Solution Approach 2:
The patent dynamically changes execution parameters by switching between optimized code paths (when type predictions are correct) and generic code paths (when type predictions fail). This parameter switching allows the system to achieve high execution efficiency for predicted types while maintaining versatility through fallback to generic handling.
3Reliability
If type check code is included in the same execution stream as intended code, then verification is performed, but cache performance deteriorates due to increased instruction cache pressure
Solution Approach 1:
The patent segments type check instructions into a separate thread, removing them from the main execution stream. This segmentation reduces the instruction cache pressure on the main thread, allowing intended code to be cached more efficiently while type verification continues in the separate thread, thereby reducing cache access time conflicts.
Data Source
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AI summary
Systems, apparatuses and methods may provide for technology that generates a first compiler output based on input code that includes dynamically typed variable information and generates a second compiler output based on the input code, wherein the second compiler output includes type check code to verify one or more type inferences associated with the first compiler output. The technology may also execute the first compiler output and the second compiler output in parallel via different threads.