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gh-106529: Make FOR_ITER a viable uop (#112134)

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This uses the new mechanism whereby certain uops
are replaced by others during translation,
using the `_PyUop_Replacements` table.
We further special-case the `_FOR_ITER_TIER_TWO` uop
to update the deoptimization target to point
just past the corresponding `END_FOR` opcode.

Two tiny code cleanups are also part of this PR.
This commit is contained in:
Guido van Rossum 2023-11-20 10:08:53 -08:00 • committed by GitHub
parent d59feb5dbe
commit 1995955173
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8 changed files with 138 additions and 43 deletions
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6
Python/abstract_interp_cases.c.h generated
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@ -624,6 +624,12 @@
break;
}
case _FOR_ITER_TIER_TWO: {
STACK_GROW(1);
PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
break;
}
case _ITER_CHECK_LIST: {
break;
}