Tuesday, March 22, 2016

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What do you understand by dead elimination?

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Dead elimination:   A variable is live at a point in a program if its value can be used subsequently. Otherwise it is dead at that point. Let us a variable x is dead. That is, never subsequently used, at the point where the statement x : = y + z appears in a basic block. Then this statement may be safely removed without changing the value of the basic block.
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