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Title: gh-141510: Update specializer to support frozendict with BINARY_SUBSCR by corona10 · Pull Request #144911 · python/cpython · GitHub

Open Graph Title: gh-141510: Update specializer to support frozendict with BINARY_SUBSCR by corona10 · Pull Request #144911 · python/cpython

X Title: gh-141510: Update specializer to support frozendict with BINARY_SUBSCR by corona10 · Pull Request #144911 · python/cpython

Description: We need to register frozendict for support in the specializer. Since frozendict is only introduced in Python 3.15, it is not yet widely used. However, it is thread safe for many operations, including CALL_LEN and BINARY_OP_SUBSCR. It could also be optimized more aggressively in the JIT using KNOWN_CLASS optimizations in the pipeline. This is just part of a draft PR. I am also happy to make _BINARY_OP_SUBSCR_FROZEN_DICT part of _BINARY_OP_SUBSCR_DICT, depending on what the JIT team prefers. Without this PR, frozendict would be at a performance disadvantage, even though it is intended to be a first-class citizen alongside dict. Issue: gh-141510

Open Graph Description: We need to register frozendict for support in the specializer. Since frozendict is only introduced in Python 3.15, it is not yet widely used. However, it is thread safe for many operations, includi...

X Description: We need to register frozendict for support in the specializer. Since frozendict is only introduced in Python 3.15, it is not yet widely used. However, it is thread safe for many operations, includi...

Opengraph URL: https://github.com/python/cpython/pull/144911

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a9e4c02 gh-141510: Update specialzier to support frozendict with BINARY_SUBSCR corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/a9e4c02a5707f371b5279301c96b8f12e4bb1b43
9cb3cd7 Add NEWS.d corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/9cb3cd7f6013b0080dc83c5653f5dd3e4c378097
1549414 fix corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/1549414fe214ee5364f3f5ba3a65ed2682c56265
d22f149 fix corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/d22f1498d3c0fc883af12b9bb6c9a20f99633bb7
b4a06fd fix for free-threading corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/b4a06fd34899027a24a853884ea008c0b73c3d7d
c29933d fix symbol issue corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/c29933d42dcebc398906d51ae6f4351d1d01a633
9f1c969 Address code review corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/9f1c969f9317fdf4d9fe22139fa50ec6ea4085bc
acfab36 Increase _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES for frozendict corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/acfab3679c807398b4175f61201188b7d6941f56
4c7b59a Update Include/internal/pycore_dict.h corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/4c7b59a56364ea6f86f41f60e849c05affed5141
805fe2e Rename to BINARY_OP_SUBSCR_FROZENDICT corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/805fe2ed43d22e09fdc386d227dcf71bc283f7ff
a608252 Merge remote-tracking branch 'origin/gh-141510-specializer' into gh-1… corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/a6082528a1df443664f8e6f8c50d304e8ce44caa
dd616b4 Address code review corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/dd616b476ed0ccfebe7121ef6b00d162692672c9
8311052 Address code review corona10 Feb 17, 2026 https://github.com/python/cpython/pull/144911/commits/8311052773b19f4086ea878a3ced8bbadbaa2ecf
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