About PYQ - December 2019 - Compiler Design CD
B.Tech CSE - Sem VIThe Compiler Design (BTCS601) examination paper for B.Tech CSE Semester VII (December 2019) serves as a comprehensive academic resource detailing the architectural and functional modules of compiler construction. This material is specifically designed for students under the Choice Based Credit System (CBCS), focusing on the theoretical and practical implementation of language translators. The study material spans the following critical domains of computer science engineering:
- Compiler Architecture and Foundations: Detailed exploration of the various phases of a compiler supported by neat diagrams. It covers essential compiler construction tools, including a deep dive into LEX and YACC. Key concepts such as bootstrapping, cross-compilers, and the look-ahead operator are defined to provide a foundational understanding of environment-specific compilation.
- Syntax Analysis and Parsing Techniques: A comparative analysis of Top-Down vs. Bottom-Up parsing. It covers Recursive-Descent and Predictive Parsing, specifically focusing on LL(1) parsing techniques. Significant emphasis is placed on grammar transformation, including the removal of left recursion, left factoring, and the algorithmic computation of FIRST and FOLLOW symbols for parsing table construction.
- LR Parsing and Semantic Analysis: In-depth coverage of LR Parsers, augmented grammars, and SLR Parsing using canonical sets of LR(0) items. It further explains Syntax-Directed Translation (SDT) by distinguishing between S-attributed (Synthesized) and L-attributed (Inherited) definitions, visualized through dependency graphs.
- Intermediate Code Generation and Storage: Focuses on the structure of activation records, parameter-passing mechanisms, and Three Address Code (TAC) representations, including Quadruples, Triples, and Indirect Triples. It also details the construction of Directed Acyclic Graphs (DAG) for basic blocks.
- Code Optimization and Runtime Environments: Insight into the principles of code optimization and the general issues in designing a code generator. It explains basic block transformations and compares dynamic versus static storage management, highlighting the critical role of runtime storage in compiler efficiency.