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The Python programming language

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/ Python/optimizer_analysis.c
141fd8b8943eb72317dcf1f91398cd7d9f79d6d6
February 2, 2026
H
gh-144145: Revert PR#144122 for performance and potential bugs. (GH-144391)
Hai Zhu committed
ebbb2ca
January 30, 2026
H
gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122)
Hai Zhu committed
1dc12b2
January 29, 2026
H
gh-143946: Add more debug info in `optimize_uops` (GH-144262)
Hai Zhu committed
26996b5
January 25, 2026
A
gh-143995: Eliminate redundant refcounting in the JIT from LOAD_ATTR_MODULE (GH-143996)
AN Long committed
6e55337
January 24, 2026
R
gh-130415: Narrow types to constants in branches involving specialized comparisons with a constant (GH-144150)
reiden committed
6d972e0
K
gh-144016: Fix bad stack assert in the JIT optimizer (GH-144019)
Ken Jin committed
ca99bfd
January 22, 2026
M
GH-139109: Partial reworking of JIT data structures (GH-144105)
Mark Shannon committed
d77aaa7
R
gh-130415: Narrowing to constants in branches involving `is` comparisons with a constant (GH-143895)
reiden committed
0b08438
January 21, 2026
M
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 9, 2026
K
gh-143421: Allocate all JIT state in one go (GH-143626)
Ken Jin committed
e0fb278
K
gh-143421: Lazily allocate tracer code and opt buffers (GH-143597)
Ken Jin committed
b852236
January 8, 2026
H
gh-143421: Move `JitOptContext` from stack allocation to per-thread heap allocation (GH-143536)
Hai Zhu committed
aeb3403
January 6, 2026
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gh-134584: Eliminate redundant refcounting from `TO_BOOL_STR` (GH-143417)
Nadeshiko Manju committed
0a5c04a
December 23, 2025
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gh-134584: Eliminate redundant refcounting from `_CALL_TYPE_1` (GH-135818)
Tomas R. committed
25c294b
December 15, 2025
K
gh-134584: Remove custom float decref ops (GH-142576)
Ken Jin committed
0ac4e6c
December 8, 2025
K
gh-142276: Watch attribute loads when promoting JIT constants (GH-142303)
Ken Jin committed
97f0a1f
December 4, 2025
K
gh-141976: Check stack bounds in JIT optimizer (GH-142201)
Ken Jin committed
b3bf212
December 3, 2025
M
GH-141794: Limit size of generated machine code. (GH-142228)
Mark Shannon committed
62423c9
November 13, 2025
K
gh-139109: A new tracing JIT compiler frontend for CPython (GH-140310)
Ken Jin committed
4fa80ce
September 18, 2025
M
GH-138378: Move globals-to-consts pass into main optimizer pass (GH-138379)
Mark Shannon committed
3b83257
September 15, 2025
K
gh-132732: Clear errors in JIT optimizer on error (GH-136048)
Ken Jin committed
46f823b
September 3, 2025
A
gh-137136: Suppress build warnings when build on Windows with --experimental-jit-interpreter (GH-137137)
AN Long committed
1ff2cbb
August 20, 2025
K
gh-137728 gh-137762: Fix bugs in the JIT with many local variables (GH-137764)
Ken Jin committed
7fda8b6
July 26, 2025
S
GH-132732: Use pure op machinery to optimize `COMPARE_OP_INT/FLOAT/STR` (#137062)
Savannah Bailey committed
f7c380e
June 27, 2025
K
gh-132732: Automatically constant evaluate pure operations (GH-132733)
Ken Jin committed
695ab61
June 23, 2025
K
gh-134584: Specialize POP_TOP by reference and type in JIT (GH-135761)
Ken Jin committed
569fc68
June 20, 2025
K
gh-135608: Add a null check for attribute promotion to fix a JIT crash (GH-135613)
Ken Jin committed
b53b0c1
June 19, 2025
M
GH-135379: Specialize int operations for compact ints only (GH-135668)
Mark Shannon committed
9731dd2
June 17, 2025
K
gh-134584: Decref elimination for float ops in the JIT (GH-134588)
Ken Jin committed
fba5dde
May 23, 2025
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gh-131798: Small improvements to `remove_unneeded_uops` (GH-134554)
Tomas R. committed
71dea74
May 22, 2025
T
GH-131798: Optimize away isinstance calls in the JIT (GH-134369)
Tomas R. committed
484e003
B
GH-131798: Optimize cached class attributes and methods in the JIT (GH-134403)
Brandt Bucher committed
ec736e7
May 20, 2025
B
GH-131798: Narrow types more aggressively in the JIT (GH-134373)
Brandt Bucher committed
2f0570c
May 1, 2025
A
Remove duplicate includes: Python/{bytecodes,ceval,optimizer_analysis}.c (#132622)
Adam Turner committed
f21e42d
April 21, 2025
B
GH-130415: Improve the JIT's unneeded uop removal pass (GH-132333)
Brandt Bucher committed
4f7f72c
April 1, 2025
B
GH-131726: Split up _CHECK_VALIDITY_AND_SET_IP (GH-131810)
Brandt Bucher committed
3a8cefb
M
gh-130704: Strength reduce `LOAD_FAST{_LOAD_FAST}` (#130708)
mpage committed
053c285
March 20, 2025
M
GH-131498: Remove conditional stack effects (GH-131499)
Mark Shannon committed
7ebd71e
March 2, 2025
B
GH-130415: Use boolean guards to narrow types to values in the JIT (GH-130659)
Brandt Bucher committed
7afa476
February 28, 2025
M
GH-130296: Avoid stack transients in four instructions. (GH-130310)
Mark Shannon committed
54965f3
February 7, 2025
B
GH-129715: Remove _DYNAMIC_EXIT (GH-129716)
Brandt Bucher committed
5fa7e1b
January 27, 2025
M
GH-128914: Remove all but one conditional stack effects (GH-129226)
Mark Shannon committed
75b4962
January 23, 2025
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Revert "GH-128914: Remove conditional stack effects from `bytecodes.c` and the code generators (GH-128918)" (GH-129202)
Sam Gross committed
a10f993
January 20, 2025
M
GH-128914: Remove conditional stack effects from `bytecodes.c` and the code generators (GH-128918)
Mark Shannon committed
ab61d3f
M
GH-128939: Refactor JIT optimize structs (GH-128940)
Mark Shannon committed
f0f7b97
December 13, 2024
M
gh-115999: Specialize loading attributes from modules in free-threaded builds (#127711)
mpage committed
2de048c
November 9, 2024
K
gh-120619: Strength reduce function guards, support 2-operand uop forms (GH-124846)
Ken Jin committed
6293d00
October 9, 2024
M
gh-115999: Refactor `LOAD_GLOBAL` specializations to avoid reloading {globals, builtins} keys (gh-124953)
mpage committed
f978fb4