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MCQ

Q.

System program such as compiler are designed so that they are

A

Re-enterable

B

Non reusable

C

Serially usable

D

None of the mentioned

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MCQ

1.

x * 2 can be replaced by x << 1 is an example of?

A

Algebraic expression simplification

B

Accessing machine instructions

C

Strength reduction

D

Code Generator

Discussion

MCQ

2.

__________ are used to keep track of memory locations where the values of identifiers are stored.

A

Register descriptor

B

Address descriptor

C

Both A and B

D

None of the above

Discussion

MCQ

3.

Code generator uses ______ function to determine the status of available registers and the location of name values.

A

setReg

B

cinReg

C

pfReg

D

getReg

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MCQ

4.

n Directed Acyclic Graph, Leaf nodes represent?

A

identifiers

B

names

C

constants

D

All of the above

Discussion

MCQ

5.

How many descriptors are used for track both the registers (for availability) and addresses (location of values) while generating the code?

A

2

B

3

C

4

D

5

Discussion

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