Method traceData

chapter22/src/test/java/com/seaofnodes/simple/Eval2.java:393–400

( Node n, SB sb )

        sb.clear();
    }
    static void traceData( Node n, SB sb ) {
        if( sb==null ) return;
        IRPrinter.printLine(n,sb).unchar();
        _print( n._type, F.get(n), sb.p('\t'), VISIT );
        System.out.println(sb);
        sb.clear();
        VISIT.clear();
    }

    // Use type to print x as a string.  Uses a new VISIT table so the debugger
    // doesn't try to reuse VISIT if stopping mid-print.  The trace code reuses