KOS_OP_SWITCH_EQ_VAR_ATTR

• Style: EXTRA. Schema (LABEL, VAR, CONST, NOARG).

• Stack: [..., s]. Read obj from the frame namespace by the name in a1, then rhs = getattr(obj, attr_name) with the name in a2, then compare s == rhs.

  • Match: pop s; pc = a0.

  • Mismatch: fall through; stack unchanged.

• Compiler form: tuple arg ("label", "obj_name", "attr_name", 0) pre-compile.