Method isDead

chapter02/src/main/java/com/seaofnodes/simple/node/Node.java:181–181

()

    // Mostly used for asserts and printing.
    boolean isDead() { return isUnused() && nIns()==0 && _type==null; }
    /**
     * We allow disabling peephole opt so that we can observe the
     * full graph, vs the optimized graph.