Compiler pipeline — phases: Which of the following are standard phases in a compilation process?
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ALexical analysis
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BCode generation
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CBoth of the above
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DStatic analysis
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ENone of the above
Answer
Correct Answer: Both of the above
Explanation
Introduction / Context:Compilers transform source programs into target code through a series of well-defined phases. Recognizing these phases helps developers understand diagnostics, optimization opportunities, and tool behavior.
Given Data / Assumptions:
- Front end phases include lexical analysis, syntax analysis, and semantic checks.
- Back end phases include optimization and code generation.
- Terminology may vary, but core functions are common across compilers.
Concept / Approach:
Lexical analysis tokenizes character streams into tokens. Code generation emits target code (machine code or intermediate forms). While “static analysis” is sometimes a broader term for compile-time checks, the question asks which listed items are compilation phases, and both lexical analysis and code generation are canonical phases.
Step-by-Step Solution:
Identify standard phases: lexical → syntax → semantic → optimization → code generation.Confirm that both lexical analysis and code generation belong to this sequence.Select “Both of the above”.Verification / Alternative check:
Compiler textbooks outline these phases explicitly, with examples from widely used compilers such as GCC and LLVM.
Why Other Options Are Wrong:
- Lexical analysis alone / Code generation alone: Incomplete.
- Static analysis: Often overlaps semantic checks but the option as a stand-alone choice here is used as a distractor.
- None of the above: False, as both are valid phases.
Common Pitfalls:
Confusing lexical analysis with parsing; equating static analysis tools (linters) with compiler internals, though they share techniques.
Final Answer:
Both of the above