Hai Zhu 618b726d68 gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-148089) ...

* Replaces ad-hoc logic for ending traces with a simple inequality: `fitness < exit_quality`
* Fitness starts high and is reduced for branches, backward edges, calls and trace length
* Exit quality reflect how good a spot that instruction is to end a trace. Closing a loop is very, specializable instructions are very low and the others in between.

2026-04-24 10:37:01 +01:00

..

mimalloc

gh-144490: Fix mimalloc debug build for C++ (#144620)

2026-02-10 11:56:52 +01:00

pycore_abstract.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_asdl.h

…

pycore_ast_state.h

gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)

2026-02-12 00:15:33 +00:00

pycore_ast.h

gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)

2026-02-12 00:15:33 +00:00

pycore_atexit.h

…

pycore_audit.h

…

pycore_backoff.h

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

2026-03-17 00:18:59 +08:00

pycore_bitutils.h

…

pycore_blocks_output_buffer.h

gh-148688: Fix _BlocksOutputBuffer_Finish() double free (#148689)

2026-04-18 09:56:56 +00:00

pycore_brc.h

…

pycore_bytes_methods.h

gh-71679: Share the repr implementation between bytes and bytearray (GH-138181)

2025-09-17 11:10:29 +03:00

pycore_bytesobject.h

gh-100239: Specialize more binary operations using BINARY_OP_EXTEND (GH-128956)

2026-04-16 09:22:41 +01:00

pycore_c_array.h

…

pycore_call.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_capsule.h

…

pycore_cell.h

gh-144490: Fix C++ compatibility in pycore_cell.h (GH-144482)

2026-02-06 22:11:58 -05:00

pycore_ceval_state.h

…

pycore_ceval.h

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

2026-04-23 12:23:18 +01:00

pycore_code.h

GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

2026-04-16 15:22:22 +01:00

pycore_codecs.h

…

pycore_compile.h

gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)

2026-02-12 00:15:33 +00:00

pycore_complexobject.h

gh-128813: hide mixed-mode functions for complex arithmetic from C-API (#131703)

2025-04-22 14:18:18 +02:00

pycore_condvar.h

…

pycore_context.h

gh-140414: streamline thread state access in asyncio (#142742)

2025-12-15 16:57:51 +05:30

pycore_critical_section.h

gh-144969: Document that the free threading GC can change ob_tid (#144972)

2026-02-19 01:49:09 +01:00

pycore_crossinterp_data_registry.h

gh-132775: Support Fallbacks in _PyObject_GetXIData() (gh-133482)

2025-05-21 07:23:48 -06:00

pycore_crossinterp.h

gh-148072: Cache pickle.dumps/loads per interpreter in XIData (GH-148125)

2026-04-06 11:37:02 -04:00

pycore_debug_offsets.h

GH-146527: Add more data to GC statistics and add it to PyDebugOffsets (#146532)

2026-03-28 18:52:10 +00:00

pycore_descrobject.h

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

2026-01-06 11:36:00 +02:00

pycore_dict_state.h

…

pycore_dict.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_dtoa.h

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pycore_emscripten_signal.h

…

pycore_emscripten_trampoline.h

gh-145037: Fix Emscripten trampoline with emcc >= 4.0.19 (#145038)

2026-02-26 06:21:05 +08:00

pycore_exceptions.h

…

pycore_faulthandler.h

…

pycore_fileutils_windows.h

…

pycore_fileutils.h

…

pycore_floatobject.h

gh-145633: Remove support for ancient ARM platforms with mixed-endian doubles (#145634)

2026-03-11 12:39:24 +01:00

pycore_flowgraph.h

GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569)

2026-01-16 09:11:58 +00:00

pycore_format.h

…

pycore_frame.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_freelist_state.h

gh-129813, PEP 782: Add PyBytesWriter C API (#138822)

2025-09-12 13:41:59 +02:00

pycore_freelist.h

gh-140544: store pointer to interpreter state as a thread local for fast access (#140573)

2025-10-25 19:56:07 +05:30

pycore_function.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_gc.h

GH-139951: Fix major GC performance regression (GH-140262)

2025-10-21 15:22:15 +01:00

pycore_genobject.h

gh-148659: Export a few more functions required for external JITs (#148704)

2026-04-18 11:32:22 -07:00

pycore_getopt.h

…

pycore_gil.h

…

pycore_global_objects_fini_generated.h

gh-73613: Support Base32 and Base64 without padding (GH-147974)

2026-04-04 21:26:16 +03:00

pycore_global_objects.h

…

pycore_global_strings.h

gh-73613: Support Base32 and Base64 without padding (GH-147974)

2026-04-04 21:26:16 +03:00

pycore_hamt.h

…

pycore_hashtable.h

…

pycore_import.h

gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)

2026-02-12 00:15:33 +00:00

pycore_importdl.h

gh-141169: Re-raise exception from findfuncptr (GH-141349)

2025-11-11 13:52:13 +01:00

pycore_index_pool.h

…

pycore_initconfig.h

gh-116749: Fix code comment for _PyConfig_GIL_DEFAULT (gh-141804)

2025-11-24 10:42:00 -05:00

pycore_instruction_sequence.h

GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569)

2026-01-16 09:11:58 +00:00

pycore_instruments.h

gh-142186: Allow all PEP-669 events to be per-code object and disableable (GH-146182)

2026-04-22 09:08:23 +01:00

pycore_interp_structs.h

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

2026-04-24 10:37:01 +01:00

pycore_interp.h

…

pycore_interpframe_structs.h

GH-140643: Add <native> and <GC> frames to the sampling profiler (#141108)

2025-11-17 13:39:00 +00:00

pycore_interpframe.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_interpolation.h

gh-132661: Implement PEP 750 (#132662)

2025-04-30 11:46:41 +02:00

pycore_intrinsics.h

…

pycore_jit.h

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

2026-04-23 12:23:18 +01:00

pycore_lazyimportobject.h

gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)

2026-02-12 00:15:33 +00:00

pycore_list.h

gh-100239: Specialize more binary operations using BINARY_OP_EXTEND (GH-128956)

2026-04-16 09:22:41 +01:00

pycore_llist.h

…

pycore_lock.h

gh-120321: Make gi_yieldfrom thread-safe in free-threading build (#144292)

2026-01-30 12:20:27 -05:00

pycore_long.h

gh-143050: Add helper _PyLong_InitTag() (#147956)

2026-04-01 21:42:10 +00:00

pycore_magic_number.h

GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

2026-04-16 15:22:22 +01:00

pycore_memoryobject.h

gh-132776: Revert Moving memoryview XIData Code to memoryobject.c (gh-132960)

2025-04-25 16:43:50 +00:00

pycore_mimalloc.h

…

pycore_mmap.h

gh-142419: Add mmap.set_name method for user custom annotation (gh-142480)

2025-12-18 23:33:49 +09:00

pycore_modsupport.h

gh-129594: Remove redundant check on varargs in _PyArg_CheckPositional (#129595)

2025-05-26 10:51:12 +02:00

pycore_moduleobject.h

gh-145921: Add "_DuringGC" functions for tp_traverse (GH-145925)

2026-04-08 09:15:11 +02:00

pycore_namespace.h

…

pycore_object_alloc.h

…

pycore_object_deferred.h

…

pycore_object_stack.h

…

pycore_object_state.h

…

pycore_object.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_obmalloc_init.h

…

pycore_obmalloc.h

Note out-of-date obmalloc comments (#148149)

2026-04-06 23:08:47 -05:00

pycore_opcode_metadata.h

GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

2026-04-16 15:22:22 +01:00

pycore_opcode_utils.h

GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

2026-04-16 15:22:22 +01:00

pycore_optimizer_types.h

gh-146261: JIT: protect against function version changes (#146300)

2026-04-13 02:23:47 +08:00

pycore_optimizer.h

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

2026-04-24 10:37:01 +01:00

pycore_parking_lot.h

…

pycore_parser.h

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

2025-12-20 15:37:31 -05:00

pycore_pathconfig.h

…

pycore_pyarena.h

…

pycore_pyatomic_ft_wrappers.h

gh-148393: Use acquire load for _ma_watcher_tag in dict notify event (gh-148509)

2026-04-13 14:11:28 -04:00

pycore_pybuffer.h

…

pycore_pyerrors.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_pyhash.h

…

pycore_pylifecycle.h

gh-136421: Load _datetime static types during interpreter initialization (GH-136583)

2025-07-21 13:47:26 -04:00

pycore_pymath.h

gh-145633: Remove support for ancient ARM platforms with mixed-endian doubles (#145634)

2026-03-11 12:39:24 +01:00

pycore_pymem_init.h

gh-144914: use mimalloc for raw allocations on free-threading (#144916)

2026-02-18 04:16:27 +00:00

pycore_pymem.h

gh-116008: Detect freed thread state in faulthandler (#141988)

2025-11-27 12:35:00 +01:00

pycore_pystate.h

GH-126910: Revert "Make _Py_get_machine_stack_pointer return the stack pointer (#147945)" (GH-147994)

2026-04-02 16:53:09 +02:00

pycore_pystats.h

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

2025-11-03 11:36:37 -08:00

pycore_pythonrun.h

GH-126910: Revert "Make _Py_get_machine_stack_pointer return the stack pointer (#147945)" (GH-147994)

2026-04-02 16:53:09 +02:00

pycore_pythread.h

…

pycore_qsbr.h

gh-144438: Fix false sharing between QSBR and tlbc_index (gh-144554)

2026-02-17 11:12:25 -05:00

pycore_range.h

…

pycore_runtime_init_generated.h

gh-73613: Support Base32 and Base64 without padding (GH-147974)

2026-04-04 21:26:16 +03:00

pycore_runtime_init.h

gh-145633: Remove support for ancient ARM platforms with mixed-endian doubles (#145634)

2026-03-11 12:39:24 +01:00

pycore_runtime_structs.h

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

2026-04-11 21:54:23 +00:00

pycore_runtime.h

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

2026-04-11 21:54:23 +00:00

pycore_semaphore.h

gh-137433: Fix deadlock with stop-the-world and daemon threads (gh-137735)

2025-09-16 09:21:58 +01:00

pycore_setobject.h

…

pycore_signal.h

…

pycore_sliceobject.h

…

pycore_stackref.h

gh-148718: Fix Py_STACKREF_DEBUG build by defining macros (#148719)

2026-04-20 21:55:03 +09:00

pycore_stats.h

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

2025-11-03 11:36:37 -08:00

pycore_strhex.h

gh-147944: Increase range of bytes_per_sep (GH-147946)

2026-04-01 08:33:30 +00:00

pycore_structs.h

…

pycore_structseq.h

…

pycore_symtable.h

gh-137814: Fix __qualname__ of __annotate__ (#137842)

2026-04-15 21:52:30 -07:00

pycore_sysmodule.h

gh-108512: Add and use new replacements for PySys_GetObject() (GH-111035)

2025-05-28 20:11:09 +03:00

pycore_template.h

gh-132661: Implement PEP 750 (#132662)

2025-04-30 11:46:41 +02:00

pycore_time.h

Remove internal _PyTime_AsLong() function (#141053)

2025-11-05 18:37:06 +01:00

pycore_token.h

gh-132661: Implement PEP 750 (#132662)

2025-04-30 11:46:41 +02:00

pycore_traceback.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_tracemalloc.h

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

2025-12-22 21:08:07 +05:30

pycore_tstate.h

gh-144438: Fix false sharing between QSBR and tlbc_index (gh-144554)

2026-02-17 11:12:25 -05:00

pycore_tuple.h

gh-100239: Specialize more binary operations using BINARY_OP_EXTEND (GH-128956)

2026-04-16 09:22:41 +01:00

pycore_typedefs.h

…

pycore_typeobject.h

gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

2026-04-17 01:55:03 +02:00

pycore_typevarobject.h

…

pycore_ucnhash.h

…

pycore_unicodectype.h

gh-129117: Add unicodedata.isxidstart() function (#140269)

2025-10-30 10:18:12 +00:00

pycore_unicodeobject_generated.h

gh-73613: Support Base32 and Base64 without padding (GH-147974)

2026-04-04 21:26:16 +03:00

pycore_unicodeobject.h

gh-103997: Remove incorrect statements about -c dedenting (gh-138624)

2026-03-10 09:56:00 +01:00

pycore_unionobject.h

…

pycore_uniqueid.h

…

pycore_uop_ids.h

GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

2026-04-16 15:22:22 +01:00

pycore_uop_metadata.h

GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

2026-04-16 15:22:22 +01:00

pycore_uop.h

gh-144888: JIT executor bloom filter wide-type optimization and function Inlining (GH-146114)

2026-03-19 00:58:14 +08:00

pycore_warnings.h

…

pycore_weakref.h

gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614)

2025-06-30 11:14:31 +00:00