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Commits on Jan 10, 2026

• gh-143604: Hold strong reference to executor during JIT tracing (GH-143646)

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  Zheaoli

  and

  Fidget-Spinner

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  e2f0160

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Commits on Jan 9, 2026

• gh-142764: Restore REPLACE_OPCODE_IF_EVALUATES_PURE optimization for some ops (GH-143335)

  Fidget-Spinner

  authored
  9525911

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• gh-143421: Allocate all JIT state in one go (GH-143626)

  Fidget-Spinner

  authored
  e0fb278

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• gh-143421: Lazily allocate tracer code and opt buffers (GH-143597)

  Fidget-Spinner

  authored
  b852236

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Commits on Jan 8, 2026

• gh-120321: Make gen.gi_frame.clear() thread-safe (gh-143112)

  colesbury

  authored
  e2f15ae

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• gh-143421: Move `JitOptContext` from stack allocation to per-thread heap allocation (GH-143536)

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  cocolato

  and

  kumaraditya303

  authored
  aeb3403

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Commits on Jan 7, 2026

• gh-141671: PyMODINIT_FUNC: apply `__declspec(dllexport)` on Windows (GH-141672)

  encukou

  authored
  8565ddd

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Commits on Jan 6, 2026

• gh-134584: Eliminate redundant refcounting from `TO_BOOL_STR` (GH-143417)

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  Zheaoli

  authored
  0a5c04a

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• gh-142982: Specialize CALL_FUNCTION_EX (GH-143391)

  Fidget-Spinner

  authored
  df35534

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• gh-142863: optimize `list` and `set` calls with generator expressions (#142864)

  kumaraditya303

  authored
  74bb3ca

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• gh-131798: Support generator frames in the JIT optimizer (GH-143340)

  Fidget-Spinner

  authored
  90c44bc

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• gh-134584: Eliminate redundant refcounting in TO_BOOL_ALWAYS_TRUE (GH-143427)

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  reidenong

  and

  Fidget-Spinner

  authored
  54f1ed0

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• gh-41779: Allow defining any __slots__ for a class derived from tuple (GH-141763)

  serhiy-storchaka

  authored
  4d21297

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Commits on Jan 4, 2026

• gh-139757: Add BINARY_OP_SUBSCR_USTR_INT (GH-143389)

  chris-eibl

  authored
  e6bfe4d

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Commits on Jan 3, 2026

• gh-141504: Factor out tracing and optimization heuristics into a single object (gh-143381)

  corona10

  authored
  12283f6

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Commits on Jan 2, 2026

• gh-134584: JIT: Remove redundant refcount from STORE_FAST (GH-143336)

  Fidget-Spinner

  authored
  f7a03bb

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• gh-139757: Add _GUARD_NOS_COMPACT_ASCII for compact ascii optimization (gh-143332)

  corona10

  authored
  315f474

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Commits on Jan 1, 2026

• gh-134584: Eliminate redundant refcounting from `_LOAD_ATTR_SLOT` (GH-143320)

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  Zheaoli

  and

  Fidget-Spinner

  authored
  d00d39f

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• gh-134584: Eliminate redundant refcounting from _CALL{_BUILTIN_O, _METHOD_DESCRIPTOR_O} (GH-143330)

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  corona10

  and

  Fidget-Spinner

  authored
  1fb8e0e

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Commits on Dec 28, 2025

• gh-131798: Remove bounds check when indexing into tuples with a constant index (#137607)

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  tomasr8

  authored
  713684d

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• gh-143228: Fix UAF in perf trampoline during finalization (#143233)

  pablogsal

  authored
  3ccc76f

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Commits on Dec 26, 2025

• gh-134584: Eliminate redundant refcounting from `IS_OP` (GH-143171)

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  cocolato

  authored
  a1c6308

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• gh-134584: Eliminate redundant refcounting from `_COMPARE_OP_X` (GH-143186)

  cocolato

  authored
  b3f2d80

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Commits on Dec 24, 2025

• gh-143092: Make CALL_LIST_APPEND and BINARY_OP_INPLACE_ADD_UNICODE normal instructions (GH-143124)

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  Fidget-Spinner

  authored
  cf6758f

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• JIT: Move executor to a register (#143072)

  diegorusso

  authored
  fc2f0fe

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• gh-143108: Don't instrument faulthandler.c for TSan (#143109)

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  colesbury

  authored
  50ecd6b

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Commits on Dec 23, 2025

• gh-134584: Eliminate redundant refcounting from `_BINARY_OP_SUBSCR_TUPLE_INT` (GH-143094)

  cocolato

  authored
  cc48bf0

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• JIT: don't leak shim memory when shutting down the interpreter (#142984)

  diegorusso

  authored
  450e836

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• GH-143026: Fix assertion error in executor management. (GH-143104)

  markshannon

  authored
  20aeb3a

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• gh-134584: Eliminate redundant refcounting from `_CALL_TYPE_1` (GH-135818)

  tomasr8

  authored
  25c294b

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• gh-134584: Eliminate redundant refcounting from `_LOAD_ATTR_WITH_HINT` (GH-143062)

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  cocolato

  authored
  5b5ee3c

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Commits on Dec 22, 2025

• gh-138122: Allow tachyon to write and read binary output (#142730)

  pablogsal

  authored
  9e51301

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• GH-139922: Tail calling for MSVC (VS 2026) (GH-143068)

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  4 peopleauthored
  be3c131

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• gh-143057: avoid locking in `tracemalloc` C-APIs when it is not enabled (#143065)

  kumaraditya303

  authored
  e728b00

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Commits on Dec 20, 2025

• gh-122581: Use parser mutex in default build for subinterpreters (gh-142959)

  colesbury

  authored
  2b4feee

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