sample.txt

       +------------+     +------------+
       |            |     |            |
       |  CONTEXT   |<-+  |  CONTEXT   |<-+
       |            |  |  |            |  |
       +------------+  |  +------------+  |
                       |                  |
       +------------+  |  +------------+  |
       |    getY    |  |  |    getY    |  |
       |            |  |  |            |  |
       |     *------+--+  |     *------+--+
       |            |  |  |            |  |
       +------------+  |  +------------+  |
                       |                  |
       +------------+  |  +------------+  |
       |    getX    |  |  |    getX    |  |
       |            |  |  |            |  |
       |     *------+--+  |     *------+--+
       |            |  |  |            |  |
       +------------+  |  +------------+  |
                       |                  |
       +------------+  |  +------------+  |
       |   getSum   |  |  |   getSum   |  |
       |            |  |  |            |  |
       |     *------+--+  |     *------+--+
       |     *      |     |     *      |
       +-----+------+     +-----+------+
             |                  |
             +----------+-------+
                        |
                        v
             +--------------------+
             |  SharedFunctionInfo|
             |          *         |
             +----------+---------+
                        |
                        v
             +--------------------+
             |  unoptimized Code  |
             |                    |
      ??? <--+---* getX call      |
             |                    |
      ??? <--+---* getY call      |
             |                    |
             +--------------------+