Explain dead code elimination, Computer Engineering

Assignment Help:

Explain briefly Dead code Elimination of the commonly used code optimization techniques

Dead code Elimination:

Code which is unreachable or which does not influence the program (for example dead stores) can be removed. In the illustration below, the value assigned to i is never utilized, and the dead store can be removed. The first assignment to global is dead, and the third assignment to global is not reachable; both can be removed.

int global; void f (){ int i;

i = 1;          /* dead store */

global = 1;     /* dead store */

global = 2;

return;

global = 3;     /* unreachable */}

Below is the code fragment after dead code elimination.

int global;

void f (){ global = 2; return;}


Related Discussions:- Explain dead code elimination

What is loadrunner, LoadRunner works by making virtual users who take the p...

LoadRunner works by making virtual users who take the place of real users operating client software, such as sending requests using the HTTP protocol to IIS or Apache web servers.

What is the purpose of the enableevents() method, The enableEvents() method...

The enableEvents() method is used to enable an event for a certain object. Normally, an event is enabled when a listener is added to an object for a certain event. The enableEvents

What are the features of the hardwired control, What are the features of th...

What are the features of the hardwired control? A controller that uses this approach can function at high speed. It has little flexibility and the complexity of the instruction

Define the term internet, Internet:  The Internet, an umbrella term cov...

Internet:  The Internet, an umbrella term cover countless network and services that comprise a super-network, is a global network of computer networks that was started in the 1

What is a word line, What is a word line? In a memory cell, all the cel...

What is a word line? In a memory cell, all the cells of a row are linked to a common line called as word line

Compute the frequency of the radiation, Q. The work function of a metal sur...

Q. The work function of a metal surface is 6.626 X 10-19 joule. Compute the frequency of the radiation? Work function                                     W = hγ o The fre

Dynamic programing, a ship is loaded with a stock of 3 items each unit of i...

a ship is loaded with a stock of 3 items each unit of item n has a wt wn and vn the max cargo wt the ship can take is the details of 3items are item(n):1 2 3 wt(wn):2 3 1 value(vn)

Give an account of issue pertaining in c language, Give an account of the i...

Give an account of the issue pertaining to compilation of if statement in C language Control structures as if cause significant gap in between the PL domain and the execution d

Explain about the arithmetic shift, Explain about the Arithmetic Shift ...

Explain about the Arithmetic Shift An arithmetic shift micro operation shifts the signed binary number to left or right. The effect of the arithmetic shift left operation is

What are the five popular hashing functions, Five popular hashing functions...

Five popular hashing functions are as follows:- Division Method Midsquare Method Folding Method Multiplicative method Digit Analysis

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