A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence. What is this concept called?
Difficulty: Hard
About this MCQ
This Hard Compiler Design MCQ checks one syllabus fact.
The question is: “A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence. What is this concept called?”
The accepted answer is A. Peephole optimization. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence What is this concept called is answered by Peephole optimization option A Option B Cross-compiler does not match the stem it is a near-miss used to catch incomplete recall of Peephole optimization Option C Just-in-time JIT compilation does not match the stem it is a near-miss used to catch incomplete recall of Peephole optimization Remaining alternatives Bytecode fall outside the same rule and should be eliminated once Peephole optimization is identified Compiler Design questions of this type reward precise definitions rather than approximate associations Compiler Design recall of this distinction is a regular item in FPSC PPSC NTS and CSS.
- A. Peephole optimization ✓
- B. Cross-compiler
Why not B: “Cross-compiler” is not correct. The accepted answer is A. Peephole optimization. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence What is this concept called is answered by Peephole
- C. Just-in-time (JIT) compilation
Why not C: “Just-in-time (JIT) compilation” is not correct. The accepted answer is A. Peephole optimization. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence What is this concept called is answered by Peephole
- D. Bytecode
Why not D: “Bytecode” is not correct. The accepted answer is A. Peephole optimization. A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence What is this concept called is answered by Peephole
Correct answer
A. Peephole optimization
Explanation
A code optimization technique that examines a small set of adjacent instructions to replace them with a more efficient sequence What is this concept called is answered by Peephole optimization option A Option B Cross-compiler does not match the stem it is a near-miss used to catch incomplete recall of Peephole optimization Option C Just-in-time JIT compilation does not match the stem it is a near-miss used to catch incomplete recall of Peephole optimization Remaining alternatives Bytecode fall outside the same rule and should be eliminated once Peephole optimization is identified Compiler Design questions of this type reward precise definitions rather than approximate associations Compiler Design recall of this distinction is a regular item in FPSC PPSC NTS and CSS.
Source: Compiler Design Official Reference Guide
Tags: computer science, compiler design, compilers, programming languages
Submitted by: MCQsHub Editorial
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