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gh-138912: Add fast path for match class patterns without sub-patterns #144820

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Merged
JelleZijlstra merged 12 commits into from
Sep 26, 2026
Merged

gh-138912: Add fast path for match class patterns without sub-patterns #144820

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7f8b4b2
gh-138912: Add fast path for match class patterns without sub-patterns
cdce8p Feb 14, 2026
7982d8f
Merge branch 'main'
cdce8p Mar 14, 2026
1ed79b7
Fix test case
cdce8p Mar 14, 2026
93c96b0
Merge branch 'main'
cdce8p Mar 23, 2026
d9efeaa
Merge branch 'main'
cdce8p Apr 12, 2026
906dcb3
Merge branch 'main'
cdce8p May 8, 2026
dd07e55
Merge branch 'main'
cdce8p Jun 24, 2026
1681dd5
Merge branch 'main'
cdce8p Jun 29, 2026
2307ddd
Merge branch 'main'
cdce8p Jul 6, 2026
53fd8f4
Replace MATCH_CLASS_ISINSTANCE with CALL_INTRINSIC_2
cdce8p Jun 30, 2026
7763dd5
Merge branch 'main' + resolve conflict
cdce8p Aug 7, 2026
dd8c2ff
Trigger ci
cdce8p Aug 7, 2026
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Merge branch 'main'
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@cdce8p
cdce8p committed Jun 24, 2026
commit dd07e55b2e0f4aebbafb3ea875cc1e84f23a24b0
5 changes: 3 additions & 2 deletions Include/internal/pycore_magic_number.h
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Original file line number Diff line number Diff line change
Expand Up @@ -298,7 +298,8 @@ Known values:
Python 3.15a8 3665 (Add FOR_ITER_VIRTUAL and GET_ITER specializations)
Python 3.15b1 3666 (Add SEND_VIRTUAL and SEND_ASYNC_GEN specializations)
Python 3.16a0 3700 (Initial version)
Python 3.16a1 3701 (Add MATCH_CLASS_ISINSTANCE opcode)
Python 3.16a0 3701 (Add CONSTANT_EMPTY_TUPLE to LOAD_COMMON_CONSTANT)
Python 3.16a1 3702 (Add MATCH_CLASS_ISINSTANCE opcode)


Python 3.17 will start with 3750
Expand All @@ -312,7 +313,7 @@ PC/launcher.c must also be updated.

*/

#define PYC_MAGIC_NUMBER 3701
#define PYC_MAGIC_NUMBER 3702
/* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
(little-endian) and then appending b'\r\n'. */
#define PYC_MAGIC_NUMBER_TOKEN \
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