KOS_OP_SWITCH_EQ_FAST_ATTR

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

• Stack: [..., s]. Resolve obj = KosNamespace_FastDeref(ns, a1), rhs = getattr(obj, attr_name) from a2, then compare s == rhs.

  • Match: pop s; pc = a0.

  • Mismatch: fall through; stack unchanged.

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

• Implementation: koskari/lib/opcode/SWITCH_EQ_FAST_ATTR.c

10. Introspection