Revert "gh-100288: Specialise LOAD_ATTR_METHOD for managed dictionaries (GH-100289)" (#100468)

This reverts commit c3c7848a48b74a321632202e4bdcf2f465fb1cc6.

1 files changed, 0 insertions, 25 deletions

diff --git a/Python/bytecodes.c b/Python/bytecodes.c
index c2f6a7a..c0b625b 100644
--- a/Python/bytecodes.c
+++ b/Python/bytecodes.c
@@ -2718,31 +2718,6 @@ dummy_func(
         }
 
         // error: LOAD_ATTR has irregular stack effect
-        inst(LOAD_ATTR_METHOD_MANAGED_DICT) {
-            assert(cframe.use_tracing == 0);
-            PyObject *self = TOP();
-            PyTypeObject *self_cls = Py_TYPE(self);
-            _PyLoadMethodCache *cache = (_PyLoadMethodCache *)next_instr;
-            uint32_t type_version = read_u32(cache->type_version);
-            assert(type_version != 0);
-            DEOPT_IF(self_cls->tp_version_tag != type_version, LOAD_ATTR)
-            assert(self_cls->tp_flags & Py_TPFLAGS_MANAGED_DICT);
-            PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(self);
-            DEOPT_IF(_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
-            PyObject *dict = _PyDictOrValues_GetDict(dorv);
-            PyDictKeysObject *keys = (dict == NULL) ? NULL : ((PyDictObject *)dict)->ma_keys;
-            // Note: cache->keys_version can be 0 when dict is NULL.
-            DEOPT_IF(keys != NULL && keys->dk_version != read_u32(cache->keys_version), LOAD_ATTR);
-            STAT_INC(LOAD_ATTR, hit);
-            PyObject *res = read_obj(cache->descr);
-            assert(res != NULL);
-            assert(_PyType_HasFeature(Py_TYPE(res), Py_TPFLAGS_METHOD_DESCRIPTOR));
-            SET_TOP(Py_NewRef(res));
-            PUSH(self);
-            JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
-        }
-
-        // error: LOAD_ATTR has irregular stack effect
         inst(LOAD_ATTR_METHOD_WITH_DICT) {
             /* Can be either a managed dict, or a tp_dictoffset offset.*/
             assert(cframe.use_tracing == 0);