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 trivial file transfer protocol, What is trivial file transfer proto...

What is trivial file transfer protocol? Explain briefly? Trivial File Transfer Protocol (i.e. TFTP) is helpful for bootstrapping a hardware device which does not have a disk on

What is data structure, What is data structure? A data structure is a w...

What is data structure? A data structure is a way of organizing data that considers not only the items kept, but also their relationship to each other. Advance knowledge abo

Computation step in time complexity of an algorithm, Q. Computation step in...

Q. Computation step in time complexity of an algorithm? So First in the computation step the local processor executes an arithmetic and logic operation. Afterwards the several

Find resolution and output voltage of D/A convertor, A 6-bit R-2R ladder D/...

A 6-bit R-2R ladder D/A converter has a reference voltage of 6.5V. It meets standard linearity.Find (i) The Resolution in Percent. (ii) The output voltage for the word 011100.

Network, Give an intuitive explanation of why the maximum throughput, for s...

Give an intuitive explanation of why the maximum throughput, for small beta, is approximately the same for CSMA slotted Aloha and FCFS splitting with CSMA. Show the optimal expecte

What do you mean by interrupts, Q. What do you mean by Interrupts? The ...

Q. What do you mean by Interrupts? The term interrupt is an exceptional event which causes CPU to temporarily transfer its control from presently executing program to a separat

Identify the fastest logic gate, Which of the following is the fastest logi...

Which of the following is the fastest logic ECL, TTL, CMOS or LSI ? Ans. The fastest logic is ECL.

Display data in the combo box, Which property on a Combo Box do you set wit...

Which property on a Combo Box do you set with a column name, prior to setting the Data Source, to display data in the combo box? ComboBox.DataValueField = "ColumnName" When

Assembler directives, Assembler directives: An assembler directive is ...

Assembler directives: An assembler directive is a statement to give direction to the assembler to perform the task of assembly process. Assembler directives control organizati

Explain about the logical devices, Explain about the Logical Devices ...

Explain about the Logical Devices Locator, to indicate a position and/or orientation Pick, to select a displayed entity To input a single value in the space of re

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