The least number of temporary variables required to create a three-address…
1999
The least number of temporary variables required to create a three-address code in static single assignment form for the expression a = b * d - c + b * e - c is ______
Answer: C. 5 — Given: a = b * d - c + b * e - c In Static Single Assignment (SSA) form, each temporary variable is assigned exactly once. A possible three-address code is:…
- A.
3
- B.
4
- C.
5
- D.
6
Attempted by 60 students.
Show answer & explanation
Correct answer: C
Given: a = b * d - c + b * e - c
In Static Single Assignment (SSA) form, each temporary variable is assigned exactly once.
A possible three-address code is:
t1 = b * d
t2 = t1 - c
t3 = b * e
t4 = t2 + t3
t5 = t4 - c
a = t5
Here:
t1 stores b∗d
t2 stores b∗d−c
t3 stores b∗e
t4 stores (b∗d−c)+(b∗e)
t5 stores (b∗d−c)+(b∗e)−c
Thus, the least number of temporary variables required is 5
Explore the full course: Iocl Engineers Officers Grade A Paper 2