Practice Copy Propagation (2.2) - Introduction to Code Optimization - Deepening Efficiency
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Copy Propagation

Practice - Copy Propagation

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does a copy statement look like?

💡 Hint: Look for the assignment operation.

Question 2 Easy

What is copy propagation?

💡 Hint: Think about how it can simplify variables.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does copy propagation do?

It eliminates all copy statements.
It replaces values of copied variables in code.
It creates additional variables.

💡 Hint: Focus on what happens after the variable x = y is written.

Question 2

True or False: If a variable that has been assigned a copy value is redefined, the initial mapping remains valid.

True
False

💡 Hint: Think about why mapping needs to reflect real values.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Create a set of three-address code involving multiple copy statements and apply copy propagation to optimize it. Show your steps.

💡 Hint: Focus on each line's dependencies clearly.

Challenge 2 Hard

Explain how the implementation of copy propagation would change under a condition where y gets reassigned. Illustrate this with an example.

💡 Hint: Consider how the initial mapping reacts to new assignments.

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Reference links

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