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arXiv · 2311.12883

LLVM Static Analysis for Program Characterization and Memory Reuse Profile Estimation

Atanu Barai·Nandakishore Santhi·Abdur Razzak·Stephan Eidenbenz·Abdel-Hameed A. Badawy
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Abstract

Profiling various application characteristics, including the number of different arithmetic operations performed, memory footprint, etc., dynamically is time- and space-consuming. On the other hand, static analysis methods, although fast, can be less accurate. This paper presents an LLVM-based probabilistic static analysis method that accurately predicts different program characteristics and estimates the reuse distance profile of a program by analyzing the LLVM IR file in constant time, regardless of program input size. We generate the basic-block-level control flow graph of the target application kernel and determine basic-block execution counts by solving the linear balance equation involving the adjacent basic blocks' transition probabilities. Finally, we represent the kernel memory accesses in a bracketed format and employ a recursive algorithm to calculate the reuse distance profile. The results show that our approach can predict application characteristics accurately compared to another LLVM-based dynamic code analysis tool, Byfl.

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Atanu Barai, Nandakishore Santhi, Abdur Razzak, Stephan Eidenbenz, Abdel-Hameed A. Badawy. 2023-11-20. LLVM Static Analysis for Program Characterization and Memory Reuse Profile Estimation. https://arxiv.org/abs/2311.12883

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