This document gives our code for several programs for the various
parts of the extra credit homework.  We do not give the output for
all programs, but only the ones that seem relevant to that particular
part of the extra credit assignment.  The programs, along with their
outputs (which obviously is the same for all versions) are these:

let test0 =
"class Main {
   public int main(int a) {
      int b; b = a+a;
      if (a < b & b < 10)
         a = a+b;
      if (10 < a | b < 0)
         a = a * 3;
      return a;
   }
}";;
Output: reg0=5
5

let test1 = 
"class Main {
   public int main(int a) {
      int b;
      b=0;
      while (0<a) {
         b = b+a;
         a = a-1;
      }
      return b;
   }
}" ;;
Output: reg0=15
15

let test2 =
"class Main {
 public int main(int a) {
    int b;
    b=0;
    while (!(a<1)) {
       b = b+a;
       if (b==9) continue;
       if (a==2) break;
       a = a-1;
       }
       return b;
    }
}" ;;
Output: reg0=18
18

let test3 =
"class Main {
 public int main(int a) {
    int b;
    b=0;
    while (0<a) {
       b = b+a;
       if (12<b & 3<a) break;
       a = a-1;
       }
       return b;
    }
}"
;;
Output: reg0=15
15

The programs were run with the following command:

let cp = compile (annotateProg (lex_and_parse test1));;
print_string (string_of_prog cp);;

PROBLEM 1:  while statement, but no change in compileExp.

test1:
method main in Main (5)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       8
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
8:   LOADIMM    3,0
     LESS       4,3,1
     CJUMP      4,3,11
11:  RETURN     2

PROBLEM 2 - add break and continue statements, still no change
            in compileExp

test2:
method main in Main (6)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       18
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,9
     EQUAL      4,2,3
     CJUMP      4,8,10
8:   JUMP       18
     JUMP       10
10:  LOADIMM    3,2
     EQUAL      4,1,3
     CJUMP      4,13,15
13:  JUMP       23
     JUMP       15
15:  LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
18:  LOADIMM    3,1
     LESS       4,1,3
     LOADIMM    5,1
     SUB        5,5,4
     CJUMP      5,3,23
23:  RETURN     2

test3:
method main in Main (8)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       16
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,12
     LESS       4,3,2
     LOADIMM    5,3
     LESS       6,5,1
     AND        7,4,6
     CJUMP      7,11,13
11:  JUMP       19
     JUMP       13
13:  LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
16:  LOADIMM    3,0
     LESS       4,3,1
     CJUMP      4,3,19
19:  RETURN     2

PROBLEM 3:  Short-circuit evaluation of boolean expressions, v. 1

test0:
method main in Main (8)
0:   ADD        3,1,1
     MOV        2,3
     LESS       3,1,2
     CJUMP      3,4,8
4:   LOADIMM    4,10
     LESS       5,2,4
     MOV        6,5
     JUMP       9
8:   LOADIMM    6,0
9:   CJUMP      6,10,13
10:  ADD        3,1,2
     MOV        1,3
     JUMP       13
13:  LOADIMM    3,10
     LESS       4,3,1
     CJUMP      4,20,16
16:  LOADIMM    5,0
     LESS       6,2,5
     MOV        7,6
     JUMP       21
20:  LOADIMM    7,1
21:  CJUMP      7,22,26
22:  LOADIMM    3,3
     MULT       4,1,3
     MOV        1,4
     JUMP       26
26:  RETURN     1

test3:
method main in Main (8)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       19
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,12
     LESS       4,3,2
     CJUMP      4,8,12
8:   LOADIMM    5,3
     LESS       6,5,1
     MOV        7,6
     JUMP       13
12:  LOADIMM    7,0
13:  CJUMP      7,14,16
14:  JUMP       22
     JUMP       16
16:  LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
19:  LOADIMM    3,0
     LESS       4,3,1
     CJUMP      4,3,22
22:  RETURN     2

PROBLEM 4:  Short-circuit evaluation of boolean expressions, v. 2

test0:
method main in Main (8)
0:   ADD        3,1,1
     MOV        2,3
     LESS       3,1,2
     CJUMP      3,4,10
4:   LOADIMM    4,10
     LESS       5,2,4
     CJUMP      5,7,10
7:   ADD        3,1,2
     MOV        1,3
     JUMP       10
10:  LOADIMM    3,10
     LESS       4,3,1
     CJUMP      4,16,13
13:  LOADIMM    5,0
     LESS       6,2,5
     CJUMP      6,16,20
16:  LOADIMM    3,3
     MULT       4,1,3
     MOV        1,4
     JUMP       20
20:  RETURN     1

test1:
method main in Main (5)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       8
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
8:   LOADIMM    3,0
     LESS       4,3,1
     CJUMP      4,3,11
11:  RETURN     2

test2:
method main in Main (6)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       18
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,9
     EQUAL      4,2,3
     CJUMP      4,8,10
8:   JUMP       18
     JUMP       10
10:  LOADIMM    3,2
     EQUAL      4,1,3
     CJUMP      4,13,15
13:  JUMP       21
     JUMP       15
15:  LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
18:  LOADIMM    3,1
     LESS       4,1,3
     CJUMP      4,21,3
21:  RETURN     2

test3:
method main in Main (8)
0:   LOADIMM    3,0
     MOV        2,3
     JUMP       16
3:   ADD        3,2,1
     MOV        2,3
     LOADIMM    3,12
     LESS       4,3,2
     CJUMP      4,8,13
8:   LOADIMM    5,3
     LESS       6,5,1
     CJUMP      6,11,13
11:  JUMP       19
     JUMP       13
13:  LOADIMM    3,1
     SUB        4,1,3
     MOV        1,4
16:  LOADIMM    3,0
     LESS       4,3,1
     CJUMP      4,3,19
19:  RETURN     2