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The Python programming language

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/ Python/optimizer_bytecodes.c
4ff8b07a3d907c5a755a862a86496ed6c6fb2f3d
April 4, 2026
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gh-148083: Prevent constant folding when lhs is container types (gh-148090)
Donghee Na committed
853dafe
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gh-148083: Constant-fold _CONTAINS_OP_SET for frozenset (gh-148084)
Donghee Na committed
289f19a
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gh-148078: Fix uses of sym_is_not_null in JIT optimizer (GH-148079)
Ken Jin committed
c50d6cd
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gh-131798: split recursion check to _CHECK_RECURSION_LIMIT and combine checks (GH-148070)
Kumar Aditya committed
e7bf8ea
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gh-131798: relax GUARD_CALLABLE checks for self type checks (#148069)
Kumar Aditya committed
7bcc1c4
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gh-131798: JIT inline function addresses of builtin methods (#146906)
Kumar Aditya committed
7e275d4
April 3, 2026
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gh-146640: Optimize int operations by mutating uniquely-referenced operands in place (JIT only) (GH-146641)
Pieter Eendebak committed
48317fe
March 30, 2026
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gh-146558: JIT optimize dict access for objects with known hash (#146559)
Kumar Aditya committed
8e9d21c
March 28, 2026
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gh-146381: Constant-fold frozendict subscript lookups via REPLACE_OPCODE_IF_EVALUATES_PURE (gh-146490)
Donghee Na committed
5992238
March 27, 2026
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gh-145866: Convert `LIST_EXTEND` to leave its inputs on the stack to be cleaned up by `_POP_TOP` be cleaned up by `_POP_TOP` (GH-146383)
Neko Asakura committed
a492d9f
March 26, 2026
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gh-131798: JIT: split call method and call builtin opcodes into smaller uops (#146463)
Kumar Aditya committed
bfdaa3c
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gh-145866: Convert `DICT_UPDATE` to leave its inputs on the stack to be cleaned up by `_POP_TOP` (GH-146190)
Sacul committed
1516c26
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gh-145866: Convert `_CALL_INTRINSIC_2` to leave its inputs on the stack to be cleaned up by `_POP_TOP` (GH-146262)
Kevin Huai committed
f5364ae
March 24, 2026
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gh-146306: JIT: Optimize float operations by mutating uniquely-referenced operands in place (GH-146307)
Pieter Eendebak committed
951675c
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gh-145866: Convert `DICT_MERGE` to leave its inputs on the stack to be cleaned up by `_POP_TOP` (GH-146329)
Neko Asakura committed
6d73bc2
March 22, 2026
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gh-143414: Implement unique reference tracking for JIT, optimize unpacking of such tuples (GH-144300)
reiden committed
e36f8db
March 21, 2026
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GH-145667: Merge `GET_ITER` and `GET_YIELD_FROM_ITER` (GH-146120)
Mark Shannon committed
879c85f
March 20, 2026
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gh-146099: Optimize _GUARD_CODE_VERSION+IP via function version symbols (GH-146101)
Ken Jin committed
acfb452
March 19, 2026
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gh-131798: JIT: optimize _LOAD_COMMON_CONSTANT (GH-146104)
Mingzhu Yan committed
98977ca
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gh-145866: Convert `SET_UPDATE` to leave its inputs on the stack to be cleaned up by `_POP_TOP` (GH-145979)
Sacul committed
0d37e42
March 17, 2026
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gh-146058: Fix _GUARD_CODE_VERSION_* (GH-146060)
Ken Jin committed
966fc81
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gh-131798: Optimize `_ITER_CHECK_RANGE` and `_ITER_CHECK_LIST` in the JIT (GH-144583)
Sacul committed
1efd993
March 16, 2026
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gh-146018: Disable over-aggressive optimization for _GUARD_CODE_VERSION (GH-145923)
Ken Jin committed
182aea2
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gh-145866: Convert `CALL_INTRINSIC_1` to leave its inputs on the stack to be cleaned up by `_POP_TOP`. (GH-145964)
Sacul committed
37121ef
March 14, 2026
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gh-134584: Eliminate redundant refcounting in JIT for `MATCH_CLASS` (GH-144821)
Sacul committed
798070d
March 11, 2026
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gh-144540: Add _MAKE_HEAP_SAFE uop to eliminate unnecessary refcount operations in RETURN_VALUE and YIELD_VALUE (GH-144414)
Hai Zhu committed
f062014
March 3, 2026
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gh-145214: Narrow _GUARD_TOS_ANY_{SET,DICT} by using probable type (gh-145215)
Donghee Na committed
6908372
February 24, 2026
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gh-145122: Add _GUARD_NOS_ANY_DICT to prevent STORE_SUBSCR_DICT on frozendict (gh-145039)
Donghee Na committed
0f759f1
February 22, 2026
C
Fix warnings on main (GH-145104)
Chris Eibl committed
5944a53
February 19, 2026
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GH-144651: Optimize the new uops added when recording values during tracing. (GH-144948)
Mark Shannon committed
3f37b94
February 14, 2026
C
fix warnings in jit builds (GH-144817)
Chris Eibl committed
caac966
February 10, 2026
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gh-134584: Optimize `_BINARY_OP_SUBSCR_LIST_SLICE` (GH-144659)
Sacul committed
6c8ca1c
February 8, 2026
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GH-131798: Optimize `_GUARD_TOS_SLICE` (GH-144470)
Sacul committed
cfeede8
February 5, 2026
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GH-144179: Use recorded values to make optimizer more robust (GH-144437)
Mark Shannon committed
b53fc7c
February 2, 2026
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gh-139109: Replace `_CHECK_STACK_SPACE` with `_CHECK_STACK_SPACE_OPERAND` in JIT optiimizer (GH-144394)
Hai Zhu committed
89e6607
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GH-144179: Add value recording to JIT tracing front-end (GH-144303)
Mark Shannon committed
141fd8b
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gh-144145: Revert PR#144122 for performance and potential bugs. (GH-144391)
Hai Zhu committed
ebbb2ca
January 30, 2026
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gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122)
Hai Zhu committed
1dc12b2
January 25, 2026
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gh-143995: Eliminate redundant refcounting in the JIT from LOAD_ATTR_MODULE (GH-143996)
AN Long committed
6e55337
January 24, 2026
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gh-144140: Optimize len for string constants in optimizer (GH-144142)
Yi Yang committed
979d92f
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gh-130415: Narrow types to constants in branches involving specialized comparisons with a constant (GH-144150)
reiden committed
6d972e0
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gh-144007: Eliminate redundant refcounting in the JIT for BINARY_OP (GH-144011)
AN Long committed
4e10fa9
January 23, 2026
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gh-144005: Eliminate redundant refcounting in the JIT for BINARY_OP_EXTEND (#144006)
AN Long committed
2f42f83
January 22, 2026
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GH-139109: Partial reworking of JIT data structures (GH-144105)
Mark Shannon committed
d77aaa7
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gh-130415: Narrowing to constants in branches involving `is` comparisons with a constant (GH-143895)
reiden committed
0b08438
January 21, 2026
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GH-138245: Perform boolean guards by testing a single bit, rather than a full pointer comparison. (GH-143810)
Mark Shannon committed
9eab67d
January 17, 2026
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gh-143421: Use new buffer to save optimized uops (GH-143682)
Hai Zhu committed
b4b7324
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gh-143946: Show `JitOptSymbol` on abstract stack when set PYTHON_OPT_DEBUG > 4 (GH-143957)
Hai Zhu committed
61ec66a
January 13, 2026
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gh-131798: JIT optimizer: Support custom binary op and property frames (GH-143735)
Ken Jin committed
2873c31
January 12, 2026
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gh-134584: Eliminate redundant refcounting in TO_BOOL_INT, TO_BOOL_LIST (GH-143759)
reiden committed
c556786