Example:
Code for a < b or c < d and e < f
| 100: if a < b goto 103 |
if e < f goto 111
|
| 101: t1 = 0
|
109: t3 = 0
|
| 102: goto 104
|
110: goto 112
|
| 103: t1 = 1
|
111: t3 = 1
|
| 104: |
112:
|
| if c < d goto 107 |
t4 = t2 and t3
|
| 105: t2 = 0
|
113: t5 = t1 or t 4
|
| 106: goto 108
|
|
| 107: t2 = 1
|
|
| 108:
|
|
| |
|
A relational expression a < b is equivalent to the conditional statement if a < b then 1 else 0 and three address code for this expression is:
100: if a < b goto 103.
101: t = 0
102: goto 104
103: t = 1
104:
It is continued from 104 in the same manner as the above written block.
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