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gh-139757: Add BINARY_OP_SUBSCR_USTR_INT #143389

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Merged
Fidget-Spinner merged 11 commits into from
Jan 4, 2026
Merged

gh-139757: Add BINARY_OP_SUBSCR_USTR_INT #143389

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15387dc
POC implementation of BINARY_OP_SUBSCR_NCSTR_INT
chris-eibl Jan 3, 2026
b97fe4e
Merge remote-tracking branch 'upstream/main' into substr_cstr_int
chris-eibl Jan 4, 2026
f69803d
BINARY_OP_SUBSCR_NCSTR_INT -> BINARY_OP_SUBSCR_USTR_INT
chris-eibl Jan 4, 2026
f7c0739
Use _POP_TOP_UNICODE
chris-eibl Jan 4, 2026
6ad8076
move _PyLong_IsNonNegativeCompact into specialize
chris-eibl Jan 4, 2026
e7e3f40
Narrow the result type of _BINARY_OP_SUBSCR_USTR_INT to str in the JIT
chris-eibl Jan 4, 2026
c56ca35
add tests
chris-eibl Jan 4, 2026
5685681
blurb it
chris-eibl Jan 4, 2026
00a2bb4
fix DEOPT_IF and INPUTS_DEAD
chris-eibl Jan 4, 2026
d41332e
bump magic number - better safe than sorry
chris-eibl Jan 4, 2026
6956fce
Update Include/internal/pycore_magic_number.h
Fidget-Spinner Jan 4, 2026
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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 @@ -286,7 +286,8 @@ Known values:
Python 3.15a1 3653 (Fix handling of opcodes that may leave operands on the stack when optimizing LOAD_FAST)
Python 3.15a1 3654 (Fix missing exception handlers in logical expression)
Python 3.15a1 3655 (Fix miscompilation of some module-level annotations)
Python 3.15a1 3656 (Add TRACE_RECORD instruction, for platforms with switch based interpreter)
Python 3.15a2 3656 (Add TRACE_RECORD instruction, for platforms with switch based interpreter)
Python 3.15a4 3657 (Add BINARY_OP_SUBSCR_USTR_INT)


Python 3.16 will start with 3700
Expand All @@ -300,7 +301,7 @@ PC/launcher.c must also be updated.

*/

#define PYC_MAGIC_NUMBER 3656
#define PYC_MAGIC_NUMBER 3657
/* 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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14 changes: 10 additions & 4 deletions Include/internal/pycore_opcode_metadata.h
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