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Computer Science Engineering (CSE) Exam  >  Computer Science Engineering (CSE) Questions  >  Which of the following phases of the compiler... Start Learning for Free
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Which of the following phases of the compiler is machine independent?
  1. Intermediate code generation
  2. Target code generation
  3. Intermediate code optimization
  • a)
    1
  • b)
    2
  • c)
    3
  • d)
    None of these
Correct answer is option 'A,C'. Can you explain this answer?
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Which of the following phases of the compiler is machine independent? ...
In compiler design, every phase takes inputs from its previous stage and feeds its output to the next phase of the compiler. There are 7 phases in a compiler.
  • Lexical analysis
  • Syntax analysis
  • Semantic analysis
  • Intermediate code generator
  • Code independent optimizer
  • Code dependent optimizer
  • Code generator
Machine-dependent optimization is done after the target code has been generated and when the code is transformed according to the target machine architecture. It involves CPU registers and may have absolute memory references rather than relative references.
Machine-independent optimization attempts to improve the intermediate code to get a better target code. The part of the code which is transformed here does not involve any absolute memory location or any CPU registers.
Machine independent phases are:
  • Lexical analysis
  • Syntax analysis
  • Semantic analysis
  • Intermediate code generation
  • Sometimes code optimization
Hence, the correct options are (A) and (C).
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Which of the following phases of the compiler is machine independent? Intermediate code generation Target code generation Intermediate code optimizationa)1b)2c)3d)None of theseCorrect answer is option 'A,C'. Can you explain this answer?
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