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An optimisation performed on the intermediate representation rather than the target code benefits

  • A.the compilation speed rather than the generated code
  • B.the front end rather than the back end of the compiler
  • C.every target machine the compiler supports
  • D.only the machine for which the compiler was configured

Answer: C

Writing the transformation once at that level pays off across every back end. This is one of the main practical arguments for having an intermediate representation at all. The alternative is reimplementing every transformation for each target.

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