Explain common sub expression elimination, Computer Engineering

Assignment Help:

Explain briefly Common sub expression elimination of the commonly used code optimization techniques.

Common sub expression elimination:

In given expression as "(a+b)-(a+b)/4", in such "common sub-expression" termed to the duplicated "(a+b)". Compilers implementing such technique realize that "(a+b)" would not modify, and by itself, only compute its value once and use similar value next time.


Related Discussions:- Explain common sub expression elimination

What are null values, What are null values? If the value of a field in ...

What are null values? If the value of a field in a table is indeterminate or unknown, it is known as a null value.

Self-perception, Mr. X seems to view himself in positive terms (MMPI-2: Ho=...

Mr. X seems to view himself in positive terms (MMPI-2: Ho=38) as a well-functioning person who is capable of dealing with his life and personal challenges (MMPI-2: LSE=41, TRT=39),

Combinatorial and scheduling problems, Combinatorial and Scheduling Proble...

Combinatorial and Scheduling Problems: One class of problems is concerned with specifying optimal scheduled. A classical example is the Travelling Salesperson Problem where

I have a user defined function that does not recalculate, Contain all the c...

Contain all the cells that your UDF depends on in the argument list. Or enter this as the first statement in your Function: Application.Volatile This will cause the functi

Functional units of a computer system, Functional units of a computer syste...

Functional units of a computer system: Digital computer systems consist of 3 distinct units. These units are as follows:  Central Processing unit Input unit and Output unit.

What are the benefits of electronic data interchange process, What are the ...

What are the benefits of electronic data interchange process? Advantages of Electronic Data Interchange: a. EDI replaces paper transactions along with electronic transac

Differentiate between synchronous and asynchronous i/o, Differentiate betwe...

Differentiate between synchronous and asynchronous input/output with the help of an example. The input-output operation is asynchronous input/output operation since after the s

What are the advantages and disadvantages of a smart card, What are the adv...

What are the advantages and disadvantages of a Smart Card?    Advantages of Smart Card: 1. It gives convenience & support for multiple currencies over borders. 2. Used

#logic function, Minimize the following logic function using K-maps and rea...

Minimize the following logic function using K-maps and realize using NAND and NOR gates. F(A,B,C,D) =?_m(1,3,5,8,9,11,15) + d(2,13).

How many chips will be required in a microprocessor , A microprocessor uses...

A microprocessor uses RAM chips of 1024 × 1 capacity. (i) How many chips will be required and how many address lines will be connected to provide capacity of 1024 bytes. (ii) How

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