1. What is the primary role of the code generator in a compiler?
A) To check syntax errors
B) To convert high-level language code into machine code
C) To optimize the source code
D) To generate intermediate representations of the code
Answer: B) To convert high-level language code into machine code
2. Which phase does the code generator follow in the compilation process?
A) Lexical analysis
B) Syntax analysis
C) Intermediate code generation
D) Optimization
Answer: C) Intermediate code generation
3. What does the code generator primarily produce?
A) High-level code
B) Intermediate code
C) Machine-specific code (target code)
D) Assembly code
Answer: C) Machine-specific code (target code)
4. Which of the following is NOT a function of the code generator?
A) Generating the final output in the form of machine code
B) Register allocation
C) Syntax checking
D) Instruction selection
Answer: C) Syntax checking
5. In the context of code generation, what is meant by “instruction selection”?
A) Determining the correct sequence of instructions to execute the program
B) Choosing the appropriate instructions for a given operation based on the target machine
C) Removing unused instructions from the generated code
D) Optimizing the flow of control in the program
Answer: B) Choosing the appropriate instructions for a given operation based on the target machine
6. What is the role of the code generator in terms of registers?
A) To create variables for the source code
B) To allocate variables to machine registers
C) To remove unnecessary registers from the code
D) To free up memory used by registers
Answer: B) To allocate variables to machine registers
7. Why is register allocation important in the code generation phase?
A) It ensures that instructions are executed in the correct order
B) It minimizes the number of registers used in the program
C) It helps in reducing memory access time
D) It helps in detecting runtime errors
Answer: C) It helps in reducing memory access time
8. Which of the following does the code generator rely on when selecting machine instructions?
A) The abstract syntax tree (AST)
B) The machine architecture of the target system
C) The intermediate code generated by the syntax analyzer
D) The high-level language constructs
Answer: B) The machine architecture of the target system
9. Which of the following is typically the output of the code generator?
A) Assembly code specific to the target machine
B) High-level language source code
C) Intermediate representation of the code
D) Syntax tree
Answer: A) Assembly code specific to the target machine
10. What is the role of “peephole optimization” in the code generation phase?
A) To select the most efficient instructions from the instruction set
B) To optimize small sequences of instructions at the machine level
C) To improve the readability of the generated code
D) To detect and remove syntax errors
Answer: B) To optimize small sequences of instructions at the machine level