Compiler Passes and Multi-pass Compiler Quiz
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Questions and Answers

What is the purpose of the code generator in a compiler?

  • To perform syntactic analysis
  • To translate the source code into machine code (correct)
  • To optimize the intermediate code
  • To manage the compilation passes
  • What is a 'pass' in the context of a compiler?

  • A phase in the compilation process
  • A complete traversal of the source program (correct)
  • The input to the semantic analysis
  • The output of the syntactic analysis
  • How many passes does a typical compiler have?

  • Three passes
  • The number of passes is variable
  • Two passes (correct)
  • One pass
  • What is the purpose of the first pass in a multi-pass compiler?

    <p>To read the source program and extract tokens</p> Signup and view all the answers

    What is the purpose of the second pass in a multi-pass compiler?

    <p>To read the output file from the first pass and build the syntactic tree</p> Signup and view all the answers

    What is the main difference between a one-pass compiler and a multi-pass compiler?

    <p>A one-pass compiler traverses the program only once, while a multi-pass compiler traverses the program multiple times</p> Signup and view all the answers

    What is the purpose of machine-independent optimization?

    <p>To improve the intermediate code for better target code generation</p> Signup and view all the answers

    What kind of inefficiencies can be introduced during intermediate code generation?

    <p>Using variables instead of constants</p> Signup and view all the answers

    Which of the following is NOT a potential optimization technique mentioned in the text?

    <p>Performing register allocation</p> Signup and view all the answers

    What is compile-time evaluation?

    <p>Evaluating constant expressions at compile time</p> Signup and view all the answers

    Which stage of the compiler is responsible for generating intermediate code?

    <p>Code generation</p> Signup and view all the answers

    Which of the following statements is true about machine-independent optimization?

    <p>It can change the structure of the program beyond recognition</p> Signup and view all the answers

    What is the primary function of a compiler in the language processing system?

    <p>To convert high-level language instructions into machine-understandable format</p> Signup and view all the answers

    What is the purpose of the preprocessor in the language processing system?

    <p>To perform tasks like macro-expansion and file inclusion before the compiler processes the code</p> Signup and view all the answers

    Why is writing a program directly in binary language considered difficult?

    <p>Machines/computers are not capable of understanding binary language</p> Signup and view all the answers

    What is the second step in a machine's language processing system?

    <p>Compiling the preprocessed code</p> Signup and view all the answers

    What is the role of the preprocessor in the language processing system?

    <p>To expand macros and include specified header files before the compiler processes the code</p> Signup and view all the answers

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