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    Question

    If an expression `x = a + b` is computed, and later in

    the same basic block, `y = a + b` is computed, a compiler can apply which optimization?
    A Constant Propagation Correct Answer Incorrect Answer
    B Dead Code Elimination Correct Answer Incorrect Answer
    C Common Subexpression Elimination (CSE) Correct Answer Incorrect Answer
    D Loop Invariant Code Motion Correct Answer Incorrect Answer
    E Strength Reduction Correct Answer Incorrect Answer

    Solution

    Common Subexpression Elimination (CSE)

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