KOS_OP_CALL_FAST_ATTR_STAR

• Style: EXTRA. Schema: FASTVAR (slot index for obj), CONST (attr name), COUNT (opa bitflags), NOARG.

• Stack: Same stack layout and opa behavior as KOS_OP_CALL_VAR_ATTR_STAR. obj is read from fast slot a0, so the frame must have fast locals. Pop, resolution and the call match CALL_ATTR_STAR.

• Invariants: Same opa and tuple/pos rules as CALL_ATTR_STAR; fast slot must be in range and bound.

• Compiler form: Not emitted by the compiler; available for manual bytecode construction.