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Commit38a7f78

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GH-93429: DocumentLOAD_METHOD removal (GH-93803)
1 parenta338e10 commit38a7f78

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‎Doc/library/dis.rst‎

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@@ -887,7 +887,20 @@ iterations of the loop.
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..opcode::LOAD_ATTR (namei)
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Replaces TOS with ``getattr(TOS, co_names[namei])``.
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If the low bit of ``namei`` is not set, this replaces TOS with
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``getattr(TOS, co_names[namei>>1])``.
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If the low bit of ``namei`` is set, this will attempt to load a method named
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``co_names[namei>>1]`` from the TOS object. TOS is popped.
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This bytecode distinguishes two cases: if TOS has a method with the correct
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name, the bytecode pushes the unbound method and TOS. TOS will be used as
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the first argument (``self``) by:opcode:`CALL` when calling the
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unbound method. Otherwise, ``NULL`` and the object return by the attribute
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lookup are pushed.
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..versionchanged::3.11
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If the low bit of ``namei`` is set, then a ``NULL`` or ``self`` is
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pushed to the stack before the attribute or unbound method respectively.
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..opcode::COMPARE_OP (opname)
@@ -1189,18 +1202,6 @@ iterations of the loop.
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..versionadded::3.6
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..opcode::LOAD_METHOD (namei)
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Loads a method named ``co_names[namei]`` from the TOS object. TOS is popped.
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This bytecode distinguishes two cases: if TOS has a method with the correct
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name, the bytecode pushes the unbound method and TOS. TOS will be used as
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the first argument (``self``) by:opcode:`CALL` when calling the
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unbound method. Otherwise, ``NULL`` and the object return by the attribute
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lookup are pushed.
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..versionadded::3.7
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..opcode::PUSH_NULL
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Pushes a ``NULL`` to the stack.

‎Doc/whatsnew/3.12.rst‎

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@@ -106,6 +106,15 @@ Optimizations
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(Contributed by Inada Naoki in:gh:`92536`.)
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CPython bytecode changes
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========================
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* Removed the:opcode:`LOAD_METHOD` instruction. It has been merged into
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:opcode:`LOAD_ATTR`.:opcode:`LOAD_ATTR` will now behave like the old
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:opcode:`LOAD_METHOD` instruction if the low bit of its oparg is set.
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(Contributed by Ken Jin in:gh:`93429`.)
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Deprecated
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==========
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