if (DEBUG) System.out.println("** Start ins " + start + " -> block " + basicBlock.getId());
	private BasicBlock getBlock(InstructionHandle start, LinkedList<InstructionHandle> jsrStack) {		BasicBlock basicBlock = basicBlockMap.get(start);		if (basicBlock == null) {			basicBlock = cfg.allocate();			basicBlockMap.put(start, basicBlock);			WorkListItem item = new WorkListItem(start, basicBlock, cloneJsrStack(jsrStack), false);			workList.add(item);		}		return basicBlock;	}