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MCQ

Substitution of values for names whose values are constant, is done in

local optimization

loop optimization

constant folding

None of the above

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Peep-hole optimization is a form of

loop optimization

local optimization

data flow analysis

constant folding

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Which of the following class of statement usually produces no executable code when compiled?

Declaration

Assignment statements

Input and output statements

Structural statements

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MCQ

Dead-code elimination in machine code optimization refersto -----------

Removal of all labels.

Removal of values that never get used.

Removal of function which are not involved.

Removal of a module after its use.

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Optimization can be categorized broadly into ____ types.

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MCQ

Which of the following statement is false?

Flow graph is used to represent DAG.

Three address code is the input to the code generator.

The first statement of three address code is always leader of the first basic block.

Transformation of block is needed for code optimization.

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