Q. The output of the code generator is a target program that includes?

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Q. Replacement of an expensive operation by a cheaper one is termed as?

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Q. A basic block can be analyzed by?

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Q. What is the formal name of the method that performs optimizing loop execution speed, usually at the cost of code size?

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Q. Multiplication of a positive integer by a power of two can be replaced by left shift, which executes faster on most machines, this is an example of?

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Q. The transfer vector is associated with?

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Q. Which technique generates more optimal codes?

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Q. Code generation can be done by?

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Q. An optimizing Compiler?

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Q. Local and loop optimization in turn provides motivation for?

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Q. Live variable analysis is used as a technique for

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Q. Which of the following is true regarding the above translation expression?

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Q. Consider the following statements:

S1: An ambiguous grammar can be LL(1)
S2: An left recursive grammar can’t be LL(1)

Which of the following is true??

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Q. The grammar is not SLR (1) because it is having?

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Q. What is E val for string 1 * 0?

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Q. Consider the following grammar:

Stmt → if expr then stmt else stmt | if expr then stmt

After removing left factoring the resulting grammar will be?

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Q. Consider the following grammar:

A → cAd A → ab/ac/a

For Input string cad, how many times the recursive descent parser will backtrack ?

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Q. Consider the following grammar:

S → Abc A → ab/ac/a

For Input string cad, how many times the recursive descent parser will backtrack?

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Q. Consider the following grammar:

num → 10 ⁄ 1000 ⁄ numo ⁄ num num

Which of the following statement correctly represent the grammar?

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Q. Consider the following grammar:

S → S+S
S → S*S
S → id

What we can say about precedence of operator + and * ?

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