Elimination of common sub expression - code optimizatin, Operating System

Assignment Help:

Elimination of common sub expression during code optimization

An optimizing transformation is a rule for rewriting a section of a program to enhance its execution efficiency without influencing its meaning.  One of the methods is "Common sub expression elimination"

In the expression "(a+b)-(a+b)/4", "common subexpression" considers to the duplicated "(a+b)". Compilers implementing this method realize that "(a+b)" won't change, and like, only calculate its value once.


Related Discussions:- Elimination of common sub expression - code optimizatin

Show the multithreading performance, Q. Provide two programming instances i...

Q. Provide two programming instances in which multithreading provides better performance than a single-threaded solution. Answer: (1) A Web server that services every request

What do you mean by first fit, What do you mean by first fit? First fit...

What do you mean by first fit? First fit allocates the first hole that is big sufficient .Searching can either start at the starting of the set of holes or where the previous f

What is the use of FIFOs in client-server applications, What is the use of ...

What is the use of FIFOs in client-server applications

What do you mean by reference counts, Q. If each the access rights to an o...

Q. If each the access rights to an object are deleted the object can no longer be accessed. At this stage the object should also be deleted and the space it occupies should be ret

Explain the various file types, Explain the various file types A common...

Explain the various file types A common technique for executing file types is to contain the type as part of the file name. The name is split into two parts - a name and an ext

Develop a utility in c programming, Develop a utility in C language which w...

Develop a utility in C language which will run in Linux operating systems to display following properties of the system: ? Processor speed ? Ram size ? Computer name ? System time

List disadvantages of using a single directory, List disadvantages of using...

List disadvantages of using a single directory. Users have no privacy. Users must be careful in choosing file names, to avoid names used by others. Users may destroy each othe

Explain the application interaction protocols, Explain the Application Inte...

Explain the Application Interaction Protocols Application interaction protocols are uniquely defined for each program and are used to logically describe the data being passed b

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd