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bpo-45340: Don't create object dictionaries unless actually needed (GH-28802)

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* Never change types' cached keys. It could invalidate inline attribute objects.

* Lazily create object dictionaries.

* Update specialization of LOAD/STORE_ATTR.

* Don't update shared keys version for deletion of value.

* Update gdb support to handle instance values.

* Rename SPLIT_KEYS opcodes to INSTANCE_VALUE.
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Mark Shannon 2021-10-13 14:19:34 +01:00 • committed by GitHub
parent 97308dfcdc
commit a8b9350964
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18 changed files with 721 additions and 400 deletions
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Lib/opcode.py
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@ -231,7 +231,7 @@ _specialized_instructions = [
"BINARY_SUBSCR_DICT",
"JUMP_ABSOLUTE_QUICK",
"LOAD_ATTR_ADAPTIVE",
"LOAD_ATTR_SPLIT_KEYS",
"LOAD_ATTR_INSTANCE_VALUE",
"LOAD_ATTR_WITH_HINT",
"LOAD_ATTR_SLOT",
"LOAD_ATTR_MODULE",
@ -242,8 +242,9 @@ _specialized_instructions = [
"LOAD_METHOD_CACHED",
"LOAD_METHOD_CLASS",
"LOAD_METHOD_MODULE",
"LOAD_METHOD_NO_DICT",
"STORE_ATTR_ADAPTIVE",
"STORE_ATTR_SPLIT_KEYS",
"STORE_ATTR_INSTANCE_VALUE",
"STORE_ATTR_SLOT",
"STORE_ATTR_WITH_HINT",
# Super instructions