Finding Simple Rewrite Rules for the JIT with Z3
Briefly

The article discusses the utilization of Z3 and Python-API to identify local peephole rewrite rules in PyPy's JIT traces, influenced by John Regehr's expertise on compiler correctness and optimization techniques.
Using Z3, a robust SMT solver, allows reasoning about bitvectors to model machine integers and verify the correctness of rules implemented in JIT. The focus is on arithmetic simplification rules in PyPy, ensuring both correctness and completeness in rule implementation.
Read at PyPy
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