Define elimination of common sub expression, Computer Engineering

Assignment Help:

Explain Elimination of common sub expression during code optimization

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

In given expression as "(a+b)-(a+b)/4", in this "common sub-expression" termed to the duplicated "(a+b)". Compilers implementing such technique realize that "(a+b)" won't modify, and as such, only compute its value once.


Related Discussions:- Define elimination of common sub expression

What is internet routing hierarchy, Q. What is Internet Routing Hierarchy? ...

Q. What is Internet Routing Hierarchy? So how do packets find their way across Internet? Does every computer connected to Internet know where other computers are? Do packets ba

How do the registers help in instruction execution, Q. How do the registers...

Q. How do the registers help in instruction execution? We will discuss this in following steps: Step 1: First step of instruction execution is to fetch instruction which

What is the vertical organizational structure, What is the Vertical Organiz...

What is the Vertical Organizational Structure? This is a traditional approach that is typified by a functional approach to work in that departments work onto tasks relevant to

Define clock rate, Define clock rate? The clock rate is given by, R=1/P...

Define clock rate? The clock rate is given by, R=1/P, where P is the length of single clock cycle.

Determine the importance of computer hardware, Determine the importance of ...

Determine the importance of computer Hardware Hardware forms the greatest asset of the company, but it reaches obsolescence very quickly. Normally, it is said that every six mo

What is interrupt vector table, Interrupt vector table is always created in...

Interrupt vector table is always created in first 1K area of the memory. Explain why? When CPU receives an interrupt type number from PIC, it uses this number to look up corres

What is cursor, The illustration of the mouse on-screen. Depending on your ...

The illustration of the mouse on-screen. Depending on your settings, the cursor can be many dissimilar things.

Define wilkes control unit, Q. Define Wilkes Control Unit? Prof. M. V. ...

Q. Define Wilkes Control Unit? Prof. M. V. Wilkes of the Cambridge University Mathematical Laboratory invented the term microprogramming in 1951. He offered a systematic altern

What is the linkage section, The linkage section is part of a known as prog...

The linkage section is part of a known as program that 'links' or maps to data items in the calling program are working storage. It is the part of the called program where these sh

Should validation occur server-side or client-side, Should validation (did ...

Should validation (did the user enter a real date) occur server-side or client-side? Why? Validation will be done in both sides i.e., at the server side and client side. Ser

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