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Use low bit of LOAD_GLOBAL's oparg to indicate whether it should push an additional NULL. (GH-31933)

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Mark Shannon 2022-03-17 16:14:57 +00:00 • committed by GitHub
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@ -43,7 +43,7 @@ the following command can be used to display the disassembly of
1 0 RESUME 0
2 2 PUSH_NULL
4 LOAD_GLOBAL 0 (len)
4 LOAD_GLOBAL 1 (NULL + len)
6 LOAD_FAST 0 (alist)
8 PRECALL 1
10 CALL 1
@ -996,8 +996,11 @@ iterations of the loop.
.. opcode:: LOAD_GLOBAL (namei)
Loads the global named ``co_names[namei]`` onto the stack.
Loads the global named ``co_names[namei>>1]`` onto the stack.
.. versionchanged:: 3.11
If the low bit of ``namei`` is set, then a ``NULL`` is pushed to the
stack before the global variable.
.. opcode:: LOAD_FAST (var_num)