Choose the correct description of Peephole optimization.

Difficulty: Hard

About this MCQ

This Hard Compiler Design MCQ checks one syllabus fact.

The question is: “Choose the correct description of Peephole optimization.”

The accepted answer is D. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence.. Choose the correct description of Peephole optimization is answered by A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence option D Option A The use of regular expressions by a lexical analyzer to define and recognize valid tokens does not match the stem it is a near-miss used to catch incomplete recall of A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence Option B The part of a compiler responsible for analyzing source code including lexical syntax and semantic analysis does not match the stem it is a near-miss used to catch incomplete recall of A code optimization.

A. The use of regular expressions by a lexical analyzer to define and recognize valid tokens.
Why not A: “The use of regular expressions by a lexical analyzer to define and recognize valid tokens.” is not correct. The accepted answer is D. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence.. Choose the correct description of Peephole optimization is answered by A code optimization technique that examines a small set of adjacent instructions to replace them with a more
B. The part of a compiler responsible for analyzing source code, including lexical, syntax, and semantic analysis.
Why not B: “The part of a compiler responsible for analyzing source code, including lexical, syntax, and semantic analysis.” is not correct. The accepted answer is D. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence.. Choose the correct description of Peephole optimization is answered by A code optimization technique that examines a small set of adjacent instructions to replace them with a more
C. A technique that compiles code into machine instructions at runtime rather than before execution.
Why not C: “A technique that compiles code into machine instructions at runtime rather than before execution.” is not correct. The accepted answer is D. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence.. Choose the correct description of Peephole optimization is answered by A code optimization technique that examines a small set of adjacent instructions to replace them with a more
D. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence. ✓

Correct answer

D. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence.

Explanation

Choose the correct description of Peephole optimization is answered by A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence option D Option A The use of regular expressions by a lexical analyzer to define and recognize valid tokens does not match the stem it is a near-miss used to catch incomplete recall of A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence Option B The part of a compiler responsible for analyzing source code including lexical syntax and semantic analysis does not match the stem it is a near-miss used to catch incomplete recall of A code optimization.

Source: Compiler Design Official Reference Guide

Tags: computer science, compiler design, compilers, programming languages

Submitted by: MCQsHub Editorial

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