midterm - CS 243 Midterm CS 243 Midterm Examination Winter...

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Unformatted text preview: CS 243 Midterm CS 243 Midterm Examination Winter 2011-2012 This is an open-book, open-notes exam. You cannot use the computer. You have 1 hour 15 minutes to work on this exam. The examination has 5 questions worth 70 points. There is a final bonus question, worth 5 points, which will NOT be curved. Please budget your time accordingly. Write your answers in the space provided on the exam. If you use additional scratch paper, please turn that in as well. Your Name: In accordance with both the letter and spirit of the Honor Code, I have neither given nor received assistance on this examination. Signature: Problem Points Score 1 15 2 5 3 10 4 15 5 25 Total 70 Bonus 5 Winter 2011/2012 page 1 of 7 CS 243 Midterm 1. (15 points) True of false. Explain your answer. No credit is given unless the explanation is correct. (a) Consider the DOM relation, where a DOM b is read “a node, a , dominates a node, b ”. If a DOM c and b DOM c , then either a DOM b or b DOM a . (b) Lazy code motion CANNOT move expressions out of a cycle in a control flow graph, if it is not part of a natural loop....
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midterm - CS 243 Midterm CS 243 Midterm Examination Winter...

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