MUSINGS ON TRACING IN PYPY

Summary from the TLDR Web Dev newsletter

PyPy initially struggled with method-based JITs (just-in-time compilers) but found success with a tracing approach, which was great for a complex, dynamically typed target language (Python). While tracing offers benefits like aggressive inlining and simplified optimizations, it also suffers from performance cliffs and complexities in handling certain control flows.