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TypedPython: implement SPEC N-15 parallel order-independent loops (v1) #277
Description
Implementation of SPEC N-15 / docs/design/typedpython-parallel-loops.md (design landed via #276, #151).
v1 scope: user-marked functions only; list (copy-in) and local-array loops (array.array buffer loops stay sequential); per-region C threads created and joined, no pool; i64 + * & | ^ reductions; min/max only if exactly Python's (NaN position, first element on ties incl. +-0.0); float + and * excluded pending #153. Thresholds TP_PAR_MIN_WORK and thread cap measured on the Mac mini in a quiet window (Android later, separate issue).
Done when: differential tests vs the interpreter (results, first failing iteration and partial writes on exception/deopt), race tests and TSan pass on 3.15t.
Activity
Merge pull request #283 from thisisthepy/feat/tp-par-loops
Merge pull request #288 from thisisthepy/feat/tp-par-reduce
Merge pull request #293 from thisisthepy/feat/tp-par-minmax
Merge pull request #295 from thisisthepy/feat/tp-par-bitred
Merge pull request #297 from thisisthepy/feat/tp-par-tsan
b-re-w commentedon Oct 25, 2026
Landed in develop via #283, #288, #293, #295 and the TSan PR from feat/tp-par-tsan. Thresholds TP_PAR_MIN_WORK and the thread cap remain placeholders to be measured in a quiet window (#151, Android #278).