prevOpcode = seen;
	public void sawOpcode(int seen) {		stack.mergeJumps(this);		// System.out.println(getPC() + " " + OPCODE_NAMES[seen] + " " + stage1 + " " + stage2);		// System.out.println(stack);		distance++;		scanForBooleanValue(seen);		scanForDanger(seen);		scanForShortCircuit(seen);		stack.sawOpcode(this, seen);	}