One of the purposes of using intermediate code in compilers is to :

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  1. make parsing and semantic analysis simpler. 
  2. improve error recovery and error reporting.
  3. increase the chances of reusing the machine - independent code optimizer in other compilers.
  4. improve the register allocation.

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Option 1 : make parsing and semantic analysis simpler. 
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The correct answer is make parsing and semantic analysis simpler.

Key Points

  • Intermediate code is used in compilers as a bridge between the source code and machine code.
  • It simplifies parsing and semantic analysis by providing an abstract representation of the source code.
  • This abstraction helps in isolating the machine-dependent and machine-independent parts of the compilation process.
  • By using intermediate code, the compiler can perform optimizations more effectively and can target multiple machine architectures.
  • Examples of intermediate code forms include Three-Address Code (TAC), Static Single Assignment (SSA), and others.

Additional Information

  • Intermediate code can be more easily manipulated by different phases of the compiler than the original source code.
  • It provides a uniform structure that can be used to implement various optimizations and transformations.
  • Using intermediate code helps in separating the concerns of front-end and back-end compiler development.
  • It can be reused across different compilers, which improves development efficiency and maintainability.
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