8000 GH-132508: Use tagged integers on the evaluation stack for the last instruction offset by markshannon · Pull Request #132545 · python/cpython · GitHub
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GH-132508: Use tagged integers on the evaluation stack for the last instruction offset #132545

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Merged
merged 14 commits into from
Apr 29, 2025
Merged

GH-132508: Use tagged integers on the evaluation stack for the last instruction offset #132545

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ba30e9a
Use tagged integers on the evaluation stack for lasti
markshannon Apr 11, 2025
1d223c3
Add support for Py_STACKREF_DEBUG
markshannon Apr 14, 2025
246199b
Add news
markshannon Apr 15, 2025
b1b1252
Fix dump_item
markshannon Apr 15, 2025
8d3c3ea
Clarify division between pre-defined stackref indexes and others
markshannon Apr 15, 2025
aa4ddf0
Cast before shifting
markshannon Apr 15, 2025
e223e36
Integer tagging doesn't escape
markshannon Apr 15, 2025
9e11cc7
Push assert up to caller
markshannon Apr 15, 2025
79ed469
Avoid side effects in macro
markshannon Apr 16, 2025
b491544
Remove debug code
markshannon Apr 16, 2025
f6126b1
Handle negative ints properly in Py_STACKREF_DEBUG build
markshannon Apr 16, 2025
1b4aba6
Brandt's fix to the stencils
markshannon Apr 28, 2025
d84cd2d
Put Brandt's patch in the right place :)
markshannon Apr 29, 2025
fb89cd9
Replace is_tagged_int with PyStackRef_IsTaggedInt
markshannon Apr 29, 2025
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Cast before shifting
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@markshannon
markshannon committed Apr 15, 2025
commit aa4ddf08574e51ec1980230e56a5137ea5380aba
3 changes: 2 additions & 1 deletion Include/internal/pycore_stackref.h
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Original file line number Diff line number Diff line change
Expand Up @@ -257,7 +257,8 @@ static inline intptr_t
PyStackRef_UntagInt(_PyStackRef i)
{
assert((i.bits & Py_INT_TAG) == Py_INT_TAG);
return Py_ARITHMETIC_RIGHT_SHIFT(intptr_t, i.bits, 2);
intptr_t val = (intptr_t)i.bits;
return Py_ARITHMETIC_RIGHT_SHIFT(intptr_t, val, 2);
}


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