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gh-149238: avoid bool objects when branching on int/str in JIT #149418

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gh-149238: avoid bool objects when branching on int/str in JIT #149418

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gh-149238: avoid bool objects when branching on int/str in JIT
NekoAsakura May 5, 2026
362f6cf
Merge branch 'main' into gh-149238/bit-to-bool
NekoAsakura May 5, 2026
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4 changes: 2 additions & 2 deletions Include/internal/pycore_opcode_metadata.h
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5 changes: 4 additions & 1 deletion Include/internal/pycore_stackref.h
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Original file line number Diff line number Diff line change
Expand Up @@ -73,10 +73,13 @@ static const _PyStackRef PyStackRef_ERROR = { .index = (1 << Py_TAGGED_SHIFT) };
#define PyStackRef_None ((_PyStackRef){ .index = (2 << Py_TAGGED_SHIFT) } )
#define _Py_STACKREF_FALSE_INDEX (3 << Py_TAGGED_SHIFT)
#define _Py_STACKREF_TRUE_INDEX (4 << Py_TAGGED_SHIFT)
/* Tier-2 transient bit values (gh-149238). */
#define _Py_STACKREF_BIT_0_INDEX (5 << Py_TAGGED_SHIFT)
#define _Py_STACKREF_BIT_1_INDEX (6 << Py_TAGGED_SHIFT)
#define PyStackRef_False ((_PyStackRef){ .index = _Py_STACKREF_FALSE_INDEX })
#define PyStackRef_True ((_PyStackRef){ .index = _Py_STACKREF_TRUE_INDEX })

#define INITIAL_STACKREF_INDEX (5 << Py_TAGGED_SHIFT)
#define INITIAL_STACKREF_INDEX (7 << Py_TAGGED_SHIFT)

#define PyStackRef_ZERO_BITS PyStackRef_NULL

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