if (numWordsConsumed == Constants.UNPREDICTABLE) throw new IllegalStateException();
if (numWordsConsumed == Constants.UNPREDICTABLE) throw new InvalidBytecodeException("Unpredictable stack consumption");
	public int getNumWordsConsumed(Instruction ins) {		int numWordsConsumed = ins.consumeStack(cpg);		if (numWordsConsumed == Constants.UNPREDICTABLE) throw new IllegalStateException();		return numWordsConsumed;	}