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Commits on Jun 30, 2026

• gh-151126: Fix a possible crash during the startup with no memory under `Py_STACKREF_DEBUG` (#152478)

  sobolevn

  authored
  ecdef17

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Commits on Jun 27, 2026

• gh-151613: Fix remote debugging frame cache ABA (#151614)

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  pablogsal

  authored
  8cda6ae

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Commits on May 28, 2026

• gh-148871: make `LOAD_COMMON_CONSTANT` use immortal stackref borrows (GH-149625)

  NekoAsakura

  authored
  39bd44f

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Commits on May 21, 2026

• gh-149335: Avoid JIT trace buffer asserts with overhead above `FITNESS_INITIAL` (GH-149633)

  cocolato

  authored
  441af3a

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Commits on May 11, 2026

• gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233)

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  yoney

  authored
  8a48959

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Commits on May 6, 2026

• gh-149101: Implement PEP 788 (GH-149116)

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  3 peopleauthored
  2b7c28a

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Commits on Apr 24, 2026

• gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-148089)

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  cocolato

  authored
  618b726

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Commits on Apr 23, 2026

• GH-126910: Build/link the JIT shim in the Python interpreter (#148872)

  diegorusso

  authored
  9633c52

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Commits on Apr 16, 2026

• gh-146031: Allow keeping specialization enabled when specifying eval frame function (#146032)

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  DinoV

  authored
  c0af5c0

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Commits on Apr 11, 2026

• gh-146302: make Py_IsInitialized() thread-safe and reflect true init completion (GH-146303)

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  gpshead

  and

  claude

  authored
  64afa94

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Commits on Apr 4, 2026

• gh-146073: Revert "gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-147966)" (#148082)

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  Fidget-Spinner

  authored
  328da67

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Commits on Apr 3, 2026

• gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-147966)

  cocolato

  authored
  198b04b

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Commits on Mar 27, 2026

• gh-126910: Verify that JIT stencils preserve frame pointer (GH-146524)

  Fidget-Spinner

  authored
  1384f02

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• GH-126910: avoid reading the FP for getting the SP (GH-146521)

  diegorusso

  authored
  b60b926

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Commits on Mar 16, 2026

• gh-127958: Trace from RESUME in the JIT (GH-145905)

  Fidget-Spinner

  authored
  3d0824a

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• gh-144888: Replace bloom filter linked lists with continuous arrays to optimize executor invalidating performance (GH-145873)

  cocolato

  authored
  81ef1b7

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Commits on Mar 11, 2026

• gh-142183: Cache one datachunk per tstate to prevent alloc/dealloc thrashing (#145789)

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  Yhg1s

  and

  blurb-it[bot]

  authored
  706fd4e

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Commits on Jan 24, 2026

• gh-144068: fix JIT tracer memory leak when daemon thread exits (GH-144077)

  cocolato

  authored
  2984024

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Commits on Jan 22, 2026

• GH-139109: Partial reworking of JIT data structures (GH-144105)

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  markshannon

  authored
  d77aaa7

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Commits on Jan 20, 2026

• gh-141504: Move PYTHON_UOPS_OPTIMIZE to policy object (GH-144082)

  corona10

  authored
  27a7160

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Commits on Jan 15, 2026

• gh-141504: Refactor policy object into a single opt_config (gh-143644)

  corona10

  authored
  794f758

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Commits on Jan 14, 2026

• gh-138050: Use cold flag instead of warm flag in `MAKE_WARM` (GH-143827)

  cocolato

  authored
  94dbce1

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Commits on Jan 9, 2026

• 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-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-129824: Fix data race on `runtime->gilstate.check_enabled` (gh-143530)

  colesbury

  authored
  f11f5eb

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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 Dec 19, 2025

• JIT: Rename trampoline.c to shim.c (#142974)

  diegorusso

  authored
  685272e

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Commits on Dec 18, 2025

• GH-142513: Reimplement executor management (GH-142931)

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  markshannon

  authored
  e4058d7

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Commits on Dec 10, 2025

• gh-142048: Fix lost gc allocations count on thread cleanup (#142233)

  kevmo314

  authored
  49b1fb4

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Commits on Dec 7, 2025

• gh-138122: Don't sample partial frame chains (#141912)

  pablogsal

  authored
  d6d850d

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Commits on Nov 13, 2025

• gh-139109: A new tracing JIT compiler frontend for CPython (GH-140310)

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  Fidget-Spinner

  authored
  4fa80ce

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• gh-139653: Add PyUnstable_ThreadState_SetStackProtection() (#139668)

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  vstinner

  and

  encukou

  authored
  b99db92

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Commits on Nov 3, 2025

• gh-131253: free-threaded build support for pystats (gh-137189)

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  nascheme

  authored
  c98c5b3

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Commits on Oct 28, 2025

• gh-140544: Always assume that thread locals are available (GH-140690)

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  ZeroIntensity

  authored
  2cefa70

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