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In this video, we will discuss about the Code Optimization Techniques in Compiler Design.
What is Code Optimization ?
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Code Optimization is a technique which tries to improve the code by eliminating unnecessary code lines and arranging the statements in such a sequence that speed up the program execution without wasting the resources.
Various Code Optimization Techniques:
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1. Compile Time Evaluation
a) Constant Folding
b) Constant Propagation
2. Common sub-expression elimination
3. Code Movement
4. Dead Code Elimination
5. Strength Reduction

[@study3783]

sir, a simple correction in last example of strength reduction, you replaced a*2 with a+2, actually it should be replaced with a+a. anyway great video thank you soo much...

[@SudhakarAtchala]

Ya what you said is correct

[@study3783]

@@SudhakarAtchala sir, day before yesterday was my compiler exam, thanks to you it was good.

[@shreyajash4921]

Can rely on your teaching without referring to any other notes. You made compiler design so easy to understand. Thank you so much, sir.

[@SudhakarAtchala]

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[@learningcraftsandgames9816]

Very nice and easily understandable 👌

[@subhrajitbhowmik1913]

Your compiler design videos are extremely helpful sir! It would be highly helpful if you could make videos on Liveness analysis and constant propagation too🙏🏻

[@SudhakarAtchala]

Sure I will Subhrajit Bhowmik. Plz subscribe to the channel and if possible share with your friends. Thanks

[@anishshrestha71]

11:35 optimized code is b=a+a;

[@SudhakarAtchala]

ya what you said is correct. Thanks

[@shraddharoy9662]

Yes

[@sanjana8267]

Sir your videos are wonderful. I really appreciate the efforts you put in!! Thank you so much.

[@SudhakarAtchala]

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[@217-sritejrajulu6]

Amazing Video sir , I am subscribing you and looking forward to more videos on spcc, amazing exlaination sir

[@SudhakarAtchala]

Thank you so much.

[@kavyachoragudi885]

You have explained it soo well sir👏 Thank you very much. I hope your chanel reaches heights

[@SudhakarAtchala]

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[@technologyoverload3262]

thank you so much for teaching engineering subjects very easily , sir teachers like you are very reliable even before exam time !

[@SudhakarAtchala]

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[@reesuhemalatha5882]

Explanation is very excellent Understanding the topic very easy thank you for helping us

[@SudhakarAtchala]

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[@subashreddy3207]

helped a lot sir tku

[@user-hj8zf1nb6j]

Thank you very much sir 🙏

[@SudhakarAtchala]

Welcome. Plz subscribe to the channel and if possible share with your friends. Thanks in advance.

[@Rakeshkumar-iz1mg]

nice explationation sir thankus ......................

[@SudhakarAtchala]

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[@pavanibandi3245]

Thank u so much sir👏👏

[@SudhakarAtchala]

Hai Pavani, plz go through my videos once. Definitely you will like more videos. Thanks for your encouragement and support towards our channel. Share my sessions with your friends and subscribe to our channel.Keep on following my sessions. Thank you so much.

[@nessy3543]

Thank you so much sir

[@SudhakarAtchala]

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[@iamnighthowlers]

Thank you sir....

[@SudhakarAtchala]

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[@sarahstoriesss]

Very well teaching 🤗💙

[@SudhakarAtchala]

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[@arathyasARK]

In strength reduction if a=b*2 is replaced with a=b+2 dosent it change the sematics or meaning may be its just a=b+b ...I dont know .please correct me if am wrong

[@SudhakarAtchala]

Ya what you said is correct

[@gogulakirankumar4700]

Excellent sir

[@SudhakarAtchala]

Many many thanks

[@AshokKumar-ev6hl]

Try making a video on Difference between Local and Global Optimization.

[@SudhakarAtchala]

Definitely plz subscribe to the channel and share with your friends thank you.

[@vemarapunavya1736]

The redundant subexpsn elimination and common subexpsn elimination are both same or different.. Also folding and constant folding same...and what is frequency reduction

[@SudhakarAtchala]

Yes they are same. Don't know about frequency reduction. Plz subscribe to the channel and if possible share with your friends. Thanks in advance.

[@vemarapunavya1736]

@@SudhakarAtchala thank you sir

[@chaitanyasharmavlogs6135]

Helpful

[@SudhakarAtchala]

Glad it helped Sunil. Plz subscribe to the channel and if possible share with your friends. Thank you so much.

[@vaishnavivaishnavi4627]

Did not understood common sub expression,if possible say it ASAP plzz

[@siddhantdash4955]

please lock the exposure in camera .. the brightness of video flickers.

[@SudhakarAtchala]

k. thanks for your advice

[@snehithacreations5738]

What is meant by dynamic programming code generation

[@noufalthegamer]

Thankyou so much sir ❤️

[@SudhakarAtchala]

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[@praneethreddy33]

thank you sir

[@SudhakarAtchala]

Most welcome. Plz subscribe to the channel and if possible share with your friends. Thanks in advance..

[@meghasahu4058]

👍

[@SudhakarAtchala]

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[@muneefmuhammed8340]

at 11:32, instead of b=a+2, I think it is b=a+a

[@SudhakarAtchala]

Ya what you said is correct

[@SudhakarAtchala]

Hai Muneef Thanks for your encouragement and support towards our channel.Share my sessions with your friends and subscribe to our channel.Keep on following my sessions. Thank you so much.

[@valentinorossi3989]

Common sub expression elimination Compile time evaluation,constant folding, constant propagation Code movement Dead code elimination Strength reduction

[@thefirstme]

Sir, I think you tried to say b = a + a for strength reduction example

[@SudhakarAtchala]

Ya what you said is correct

[@SudhakarAtchala]

Hai Thanks for your encouragement and support towards our channel.Share my sessions with your friends and subscribe to our channel.Keep on following my sessions. Thank you so much.

[@bosskababy]

B=a+a in the end

[@SudhakarAtchala]

Ya what you said is correct

[@SudhakarAtchala]

Hai Karthik Thanks for your encouragement and support towards our channel.Share my sessions with your friends and subscribe to our channel.Keep on following my sessions. Thank you so much.

[@venkatvenkatesh2323]

Any Tamil Students Here 🙋

[@SudhakarAtchala]

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[@prudvi01]

Kal exam paaasss

[@SudhakarAtchala]

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[@selfreflection30]

thank you so much sir

[@SudhakarAtchala]

Most welcome srilakshmi. Plz subscribe to the channel and if possible share with your friends. Thanks in advance.