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 (D)</p>
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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 (C)</p>
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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 (C)</p>
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What is the purpose of machine-independent optimization?

<p>To improve the intermediate code for better target code generation (B)</p>
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What kind of inefficiencies can be introduced during intermediate code generation?

<p>Using variables instead of constants (D)</p>
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Which of the following is NOT a potential optimization technique mentioned in the text?

<p>Performing register allocation (B)</p>
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What is compile-time evaluation?

<p>Evaluating constant expressions at compile time (A)</p>
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Which stage of the compiler is responsible for generating intermediate code?

<p>Code generation (B)</p>
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Which of the following statements is true about machine-independent optimization?

<p>It can change the structure of the program beyond recognition (B)</p>
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What is the primary function of a compiler in the language processing system?

<p>To convert high-level language instructions into machine-understandable format (D)</p>
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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 (B)</p>
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Why is writing a program directly in binary language considered difficult?

<p>Machines/computers are not capable of understanding binary language (B)</p>
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What is the second step in a machine's language processing system?

<p>Compiling the preprocessed code (A)</p>
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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 (D)</p>
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