GATE CSE 1994 | Question: 1.12

Question

Generation of intermediate code based on an abstract machine model is useful in compilers because

• A. it makes implementation of lexical analysis and syntax analysis easier

• B. syntax-directed translations can be written for intermediate code generation

• C. it enhances the portability of the front end of the compiler

• D. it is not possible to generate code for real machines directly from high level language programs

Comments

$It\ enhances\ the\ portability\ of\ the\ front\ end\ of\ the\ compiler\ $

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Ans: C

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Similar question: GATE2014-3-17

Answer 1

C. stating the actual use of the Intermediate Code.

Also optimizations can be done on intermediate code enhancing the portability of the optimizer.

Comments

The front end includes all analysis phases and the intermediate code generator. The back end includes the code optimization phase and final code generation phase. The front end analyzes the source program and produces intermediate code while the back end synthesizes the target program from the intermediate code.

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Is Option B) Wrong or not the best for the given question considering option C)??

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@jithendra purpose of SDT is to provide help to all the phase of compler in compilation time it can not written for intermdiate code generation...

Answer 2

Answer- C  ( it enhances the portability of the front end of the compiler )
Using an abstract machine model for intermediate code generation enables the front end of the compiler to be more portable across different hardware platforms, as it can produce intermediate code that can later be translated into machine code for various target architectures.

When compilers generate intermediate code based on an abstract machine model, they create a representation of the program's logic that is independent of the target hardware architecture. This means that the intermediate code is designed to work on a hypothetical machine, abstracting away specific hardware details.

This abstraction enhances the portability of the compiler's front end because it allows the front end to focus on translating high-level language constructs into the intermediate code without worrying about the intricacies of different hardware platforms. Once the front end generates the intermediate code, the back end of the compiler can then translate this intermediate code into machine code tailored to the specific target architecture.