System.out.println("\nrenameVariables block: " + block);
	private void renameVariables(IRBasicBlock block) {		System.out.println("\nrenameVariables block: " + block);		doRenameVariables(block);		Iterator it = block.getSuccessors().iterator();		while (it.hasNext()) {			IRBasicBlock b = (IRBasicBlock) it.next();			rewritePhiParams(b);		}		it = block.getDominatedBlocks().iterator();		while (it.hasNext()) {			IRBasicBlock b = (IRBasicBlock) it.next();			if (b != block) {				renameVariables(b);			}		}		popVariables(block);	}