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UGC-NET | UGC NET CS 2016 July – II | Question 33
  • Last Updated : 20 Apr, 2018

In _______, the bodies of the two loops are merged together to form a single loop provided that they do not make any references to each other.
(A) Loop unrolling
(B) Strength reduction
(C) Loop concatenation
(D) Loop jamming


Answer: (D)

Explanation:

  • In loop jamming, the bodies of the two loops are merged together to form a single loop provided that they do not make any references to each other.
  • In loop concatenation, the bodies of the two loops are concatenated together to form a series of loop, loop concatenation, some times help to reduce complexity.
  • In loop unrolling, we try to optimize a program’s execution speed. It is also known as space–time tradeoff.
  • In strength reduction compiler optimize expensive operations with equivalent but less expensive operations.

So, option (D) is correct.


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