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PyPy has moved to Git, GitHub
PyPy has moved its canonical repo and issue tracker from https://foss.heptapod.net/pypy/pypy to https://github.com/pypy/pypy. Obviously, this means development will now be tracked in Git rather than M
PyPy Blog
A fast, compliant alternative implementation of Python Download PyPy What is PyPy ? Documentation (external link) On average, PyPy 3.12 is about 4 times faster than CPython 3.11. We curre
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Mining JIT traces for missing optimizations with Z3
In my last post I've described how to use Z3 to find simple local peephole optimization patterns for the integer operations in PyPy's JIT. An example is int_and(x, 0) -> 0. In this post I want to scal
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PyPy v7.3.16
PyPy v7.3.16: release of python 2.7, 3.9, and 3.10 The PyPy team is proud to release version 7.3.16 of PyPy. This release includes security fixes from upstream CPython, and bugfixes to the garbage col
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A DSL for peephole transformation rules of integer operations in the PyPy JIT
As is probably apparent from the sequence of blog posts about the topic in the last year, I have been thinking about and working on integer optimizations in the JIT compiler a lot. This work was mainl