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GATE CS Subject

Compiler Design GATE CS Questions

Overview & Analysis

Compiler Design (CD) is a compact and highly scoring subject, usually accounting for 4 to 6 marks in the GATE CS exam. It covers the stages of a compiler from source text ingestion to machine code generation.

The questions focus heavily on parser table construction (LL, LR, LALR), Syntax-Directed Translation (SDT) evaluations, intermediate representation generation, and compiler optimization techniques.

Frequently Asked Questions (FAQ)

Q: Which parser types are most frequently asked in Compiler Design?

A: Bottom-up parsers, especially LR(0), SLR(1), LR(1), and LALR(1), are tested frequently. You should know how to build parser states and check for shift-reduce (S-R) or reduce-reduce (R-R) conflicts.

Q: What is the difference between S-attributed and L-attributed SDT?

A: S-attributed definitions use only synthesized attributes (evaluated bottom-up). L-attributed definitions can use both synthesized and inherited attributes, provided the inherited attributes depend only on parent and left-sibling attributes.

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