nsider the block of three-address code Create DAG (Directed Acyclic Graph) To = a * b T1 = To + j T2 = T0 * T1 T3 = b[T2] j = T3 T4 = j + 2 T5 = c

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Consider the block of three-address code                                                         

Create DAG (Directed Acyclic Graph)

  1. To = a * b
  2. T1 = To + j
  3. T2 = T0 * T1
  4. T3 = b[T2]
  5. j = T3
  6. T4 = j + 2
  7. T5 = c[T4]
  8. T6 = a * b * 10
  9. i = T6
  10. sub=i
  11. If i <= 15 GOTO (1)

note: subject: compailer concepts deptt: cs/It

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