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

Objectives-interconnection network, Objectives After examining this uni...

Objectives After examining this unit, learner's will be able to understand discuss the importance and needs of interconnection network; explain the part of interconn

What is synchronous message passing, Q. What is Synchronous message passing...

Q. What is Synchronous message passing? In Synchronous message passing is executed on synchronous communication network.  In that case sender and receiver processes should be

What is macro call, What is macro call? Explain. Macro call: While a...

What is macro call? Explain. Macro call: While a macro name is used along with a set of actual parameters this is replaced through a code generated from its body. Such code

Boardcoloring, write a java program to board coloring

write a java program to board coloring

How is a microsoft crm workflow tool enabled, How is a Microsoft CRM Workfl...

How is a Microsoft CRM Workflow tool enabled? A Microsoft CRM Workflow tool enables certainly one to as given below: • Explain business policies based upon established proce

Mips assembly language equivalents , MIPS' native assembly code only has tw...

MIPS' native assembly code only has two branch instructions, beq and bne, and only one comparison instruction, slt. Using just these three instructions (along with the ori instruct

How a file can be shared among different users, Discuss the different techn...

Discuss the different techniques with which a file can be shared among different users. Several popular techniques with that a file can be shared among various users are: 1

Determine the process of kernel, What are the events done by the Kernel aft...

What are the events done by the Kernel after a process is being swapped out from the main memory? When Kernel changes the process out of the primary memory, it performs the fol

Processors hypercube and utilisation displays, Processors Hypercube Thi...

Processors Hypercube This is specific to in the hypercube: Here, every processor is depicted by the set of nodes of the graph and the several arcs are represented with communic

Explain the concept of overriding, What is overriding? Overriding is an...

What is overriding? Overriding is an inherent part of association. It can show an ordered set of objects by writing {ordered} next to the appropriate association end. In 200

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