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Author SHA1 Message Date
Donghee Na 0f759f1171 gh-145122: Add _GUARD_NOS_ANY_DICT to prevent STORE_SUBSCR_DICT on frozendict (gh-145039) 2026-02-25 00:48:45 +09:00
Mark Shannon 3f37b94c73 GH-144651: Optimize the new uops added when recording values during tracing. (GH-144948) 
* Handle dependencies in the optimizer, not the tracer
* Strengthen some checks to avoid relying on optimizer for correctness
 2026-02-19 11:52:57 +00:00
Donghee Na 3e2f5c133f gh-141510: Update specializer to support frozendict (gh-144949) 2026-02-19 01:10:53 +09:00
Pablo Galindo Salgado 46d5106cfa gh-142349: Implement PEP 810 - Explicit lazy imports (#142351) 
Co-authored-by: T. Wouters <twouters@meta.com >
Co-authored-by: Brittany Reynoso <breynoso@meta.com>
Co-authored-by: Dino Viehland <dinoviehland@meta.com>
 2026-02-12 00:15:33 +00:00
Sacul 6c8ca1c378 gh-134584: Optimize _BINARY_OP_SUBSCR_LIST_SLICE (GH-144659) 2026-02-10 22:33:32 +08:00
Ken Jin 895e83727d gh-144549: Fix tail calling interpreter on Windows for FT (GH-144550) 2026-02-06 19:20:28 +00:00
Sam Gross d891b2bbd1 gh-139103: Improve namedtuple scaling in free-threaded build (gh-144332) 
Add `_Py_type_getattro_stackref`, a variant of type attribute lookup
that returns `_PyStackRef` instead of `PyObject*`. This allows returning
deferred references in the free-threaded build, reducing reference count
contention when accessing type attributes.

This significantly improves scaling of namedtuple instantiation across
multiple threads.

* Add blurb

* Rename PyObject_GetAttrStackRef to _PyObject_GetAttrStackRef

* Apply suggestion from @vstinner

Co-authored-by: Victor Stinner <vstinner@python.org>

* Apply suggestion from @vstinner

Co-authored-by: Victor Stinner <vstinner@python.org>

* format

* Update Include/internal/pycore_function.h

Co-authored-by: Victor Stinner <vstinner@python.org>

---------

Co-authored-by: Victor Stinner <vstinner@python.org>
 2026-02-06 09:43:05 -05:00
Mark Shannon b53fc7caa6 GH-144179: Use recorded values to make optimizer more robust (GH-144437) 
* Add three new symbol kinds
* Do not smuggle code object in _PUSH_FRAME operand
* Fix small bug in predicate analysis
 2026-02-05 08:58:41 +00:00
Hai Zhu 89e6607e05 gh-139109: Replace _CHECK_STACK_SPACE with _CHECK_STACK_SPACE_OPERAND in JIT optiimizer (GH-144394) 2026-02-02 17:12:01 +00:00
Mark Shannon 141fd8b894 GH-144179: Add value recording to JIT tracing front-end (GH-144303) 2026-02-02 16:57:04 +00:00
Hai Zhu ebbb2ca81f gh-144145: Revert PR#144122 for performance and potential bugs. (GH-144391) 
Revert "gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122)"

This reverts commit 1dc12b2883.
 2026-02-02 14:09:54 +00:00
Hai Zhu 1dc12b2883 gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122) 2026-01-30 15:25:19 +00:00
AN Long 6e55337f8a gh-143995: Eliminate redundant refcounting in the JIT from LOAD_ATTR_MODULE (GH-143996) 2026-01-25 18:24:44 +00:00
AN Long 4e10fa993a gh-144007: Eliminate redundant refcounting in the JIT for BINARY_OP (GH-144011) 2026-01-24 09:35:32 +00:00
AN Long 2f42f83344 gh-144005: Eliminate redundant refcounting in the JIT for BINARY_OP_EXTEND (#144006) 2026-01-23 17:19:01 +00:00
Mark Shannon 9eab67d507 GH-138245: Perform boolean guards by testing a single bit, rather than a full pointer comparison. (GH-143810) 2026-01-21 15:58:27 +00:00
AN Long 54bedcf714 gh-144012: Check null binary op extend (#144014) 2026-01-19 02:38:37 +08:00
Mark Shannon ae53da5758 GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569) 
* Moves the `GET_ITER` instruction into the generator function preamble.
  This means the the iterable is converted into an iterator during generator
  creation, as documented, but keeps it in the same code object allowing
  optimization.
 2026-01-16 09:11:58 +00:00
Hai Zhu 94dbce1397 gh-138050: Use cold flag instead of warm flag in MAKE_WARM (GH-143827) 2026-01-14 10:27:33 +00:00
reiden c556786b8b gh-134584: Eliminate redundant refcounting in TO_BOOL_INT, TO_BOOL_LIST (GH-143759) 2026-01-12 21:56:26 +00:00
Nadeshiko Manju e535bdb0a2 gh-134584: Eliminate redundant refcounting from _CONTAINS_{OP|OP_SET|OP_DICT} (GH-143731) 
Signed-off-by: Manjusaka <me@manjusaka.me>
 2026-01-12 15:47:31 +00:00
Cajetan Rodrigues 054a565c64 gh-134584: JIT: Remove redundant refcount for _BINARY_OP_SUBSCR_DICT (GH-143724) 2026-01-12 14:13:55 +00:00
Ken Jin 548526bbbe gh-134584: JIT: Remove redundant refcounting for UNARY_{INVERT|NEGATIVE} (GH-143704) 2026-01-11 20:42:55 +00:00
Nadeshiko Manju e2f0160026 gh-143604: Hold strong reference to executor during JIT tracing (GH-143646) 
Co-authored-by: Ken Jin <kenjin4096@gmail.com>
 2026-01-10 11:15:48 +00:00
Ken Jin 95259116ec gh-142764: Restore REPLACE_OPCODE_IF_EVALUATES_PURE optimization for some ops (GH-143335) 2026-01-09 23:18:22 +00:00
Sam Gross 8cf5c4d89a gh-142908: Don't use DK_IS_UNICODE in interpreter (gh-142909) 
`DK_IS_UNICODE()` includes split keys and we don't want to specialize on
those accesses..
 2026-01-08 09:32:20 -05:00
Dino Viehland bfc3d8d77f gh-143531: Use macro to check if PEP 523 is hooked (#143532) 
Use macro to check if PEP 523 is hooked
 2026-01-07 13:26:19 -08:00
Nadeshiko Manju 0a5c04a5ce gh-134584: Eliminate redundant refcounting from TO_BOOL_STR (GH-143417) 
Signed-off-by: Manjusaka <me@manjusaka.me>
 2026-01-06 21:11:53 +00:00
Ken Jin df355348f0 gh-142982: Specialize CALL_FUNCTION_EX (GH-143391) 2026-01-06 20:34:08 +00:00
reiden 54f1ed0299 gh-134584: Eliminate redundant refcounting in TO_BOOL_ALWAYS_TRUE (GH-143427) 
Co-authored-by: Ken Jin <kenjin@python.org>
 2026-01-06 16:11:56 +00:00
Chris Eibl e6bfe4d886 gh-139757: Add BINARY_OP_SUBSCR_USTR_INT (GH-143389) 2026-01-04 14:14:27 +00:00
Ken Jin 6116d70bbd gh-143403: Fix a UAF in _BINARY_OP_INPLACE_ADD_UNICODE (GH-143404) 
Fix a UAF in `_BINARY_OP_INPLACE_ADD_UNICODE`
 2026-01-04 13:10:39 +00:00
Ken Jin f7a03bb944 gh-134584: JIT: Remove redundant refcount from STORE_FAST (GH-143336) 2026-01-02 18:22:21 +00:00
Donghee Na 315f474d11 gh-139757: Add _GUARD_NOS_COMPACT_ASCII for compact ascii optimization (gh-143332) 2026-01-02 20:58:14 +09:00
Nadeshiko Manju d00d39f58e gh-134584: Eliminate redundant refcounting from _LOAD_ATTR_SLOT (GH-143320) 
Signed-off-by: Manjusaka <me@manjusaka.me>
Co-authored-by: Ken Jin <kenjin4096@gmail.com>
 2026-01-01 17:27:02 +00:00
Donghee Na 1fb8e0eb51 gh-134584: Eliminate redundant refcounting from _CALL{_BUILTIN_O, _METHOD_DESCRIPTOR_O} (GH-143330) 
Co-authored-by: Ken Jin <kenjin4096@gmail.com>
 2026-01-01 17:25:38 +00:00
Tomas R. 713684de53 gh-131798: Remove bounds check when indexing into tuples with a constant index (#137607) 
* Remove bounds check when indexing into tuples with a constant index

* Add news entry

* fixup after rebase
 2025-12-28 22:06:06 +01:00
Hai Zhu a1c6308346 gh-134584: Eliminate redundant refcounting from IS_OP (GH-143171) 
Eliminate redundant refcounting from IS_OP
 2025-12-26 20:30:02 +00:00
Hai Zhu b3f2d80569 gh-134584: Eliminate redundant refcounting from _COMPARE_OP_X (GH-143186) 2025-12-26 16:12:28 +00:00
Ken Jin cf6758ff9e gh-143092: Make CALL_LIST_APPEND and BINARY_OP_INPLACE_ADD_UNICODE normal instructions (GH-143124) 
These super instructions need many special cases in the interpreter, specializer, and JIT. It's best we convert them to normal instructions.
 2025-12-24 22:03:00 +00:00
Diego Russo fc2f0fea6b JIT: Move executor to a register (#143072) 2025-12-24 09:44:16 +00:00
Hai Zhu cc48bf0fde gh-134584: Eliminate redundant refcounting from _BINARY_OP_SUBSCR_TUPLE_INT (GH-143094) 2025-12-23 21:47:12 +00:00
Tomas R. 25c294b6ea gh-134584: Eliminate redundant refcounting from _CALL_TYPE_1 (GH-135818) 2025-12-23 17:01:10 +00:00
Hai Zhu 5b5ee3c4bf gh-134584: Eliminate redundant refcounting from _LOAD_ATTR_WITH_HINT (GH-143062) 
Eliminate redundant refcounting from _LOAD_ATTR_WITH_HINT
 2025-12-23 00:28:08 +00:00
Chris Eibl be3c131640 GH-139922: Tail calling for MSVC (VS 2026) (GH-143068) 
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Co-authored-by: Brandt Bucher <brandt@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
 2025-12-22 23:01:34 +00:00
Sam Gross 08bc03ff2a gh-120321: Make gi_frame_state transitions atomic in FT build (gh-142599) 
This makes generator frame state transitions atomic in the free
threading build, which avoids segfaults when trying to execute
a generator from multiple threads concurrently.

There are still a few operations that aren't thread-safe and may crash
if performed concurrently on the same generator/coroutine:

 * Accessing gi_yieldfrom/cr_await/ag_await
 * Accessing gi_frame/cr_frame/ag_frame
 * Async generator operations
 2025-12-19 19:10:37 +00:00
Ken Jin 786f464c74 gh-142961: Fix constant folding len(tuple) in JIT (GH-142963) 2025-12-19 17:43:36 +00:00
Savannah Ostrowski 1391ee664c GH-134584: Remove redundant refcount for BINARY_OP_SUBSCR_STR_INT (#142844) 2025-12-18 21:29:54 +00:00
LloydZ 33d94abafd gh-134584: Eliminate redundant refcounting from _BINARY_OP_SUBSCR_LIST_INT (GH-142926) 2025-12-18 18:25:36 +00:00
Kumar Aditya e22c49522b gh-142890: remove unnecessary interp parameter from dict functions and _PyDict_NotifyEvent (#142923) 2025-12-18 22:48:56 +05:30