Computer Systems: A Programmer's Perspective Plus Mastering Engineering With Pearson Etext -- Access Card Package (3rd Edition)
Computer Systems: A Programmer's Perspective Plus Mastering Engineering With Pearson Etext -- Access Card Package (3rd Edition)
3rd Edition
ISBN: 9780134123837
Author: Randal E. Bryant, David R. O'Hallaron
Publisher: PEARSON
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Chapter 5.4, Problem 5.3PP
Program Plan Intro

Memory aliasing:

  • It denotes a case where two pointers might designate to memory location that is same.
  • The compiler should assume that unlike pointers might be aliased for safe optimizations.
  • The program aspects that could limit chances for a compiler in generating optimized code denote optimization blockers.
  • If a compiler is unable to determine whether two pointers might be aliased, it should adopt that either case would be possible.
  • The possible optimization set is been limited in this case.

Cycles per element (CPE):

  • The CPE denotes performance of program that helps in improving code.
  • It helps to understand detailed level loop performance for an iterative program.
  • It is appropriate for programs that use a repetitive computation.
  • The processor’s activity sequencing is controlled by a clock that provides regular signal of some frequency.

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