Information Technology • VI Semester • Departmental Elective

IT603(A) Compiler Design

Study the complete RGPV Compiler Design syllabus including compiler phases, lexical analysis, parsers, syntax-directed translation, intermediate code generation, runtime memory management, symbol tables, code optimization and code generation.

Subject Overview

AICTE Flexible Curricula

Compiler Design explains how a high-level source program is analyzed and translated into target code. The subject begins with compiler structure and lexical analysis, then covers parsing, syntax-directed translation, intermediate code, memory organization, symbol tables, optimization and final code generation.

Exam Focus: Students should prepare neat diagrams of compiler phases, parsing tables, syntax trees, dependency graphs, three-address code forms, basic blocks, flow graphs and DAGs.

Course Objectives

5 Objectives
Understand the basic concepts of compilers, programming languages and different compilation phases.
Understand syntax analysis and different types of parsers.
Learn syntax trees and dependency graphs.
Understand intermediate code generation, memory management and symbol table organization.
Learn code generation and code optimization techniques.

Unit-Wise Compiler Design Syllabus

5 Units
I

Introduction and Lexical Analysis

Compiler fundamentals, lexical analyzers and language specification.

  • Introduction to Compiler
  • Analysis of Source Program
  • Phases and Passes
  • Bootstrapping
  • Lexical Analyzers
  • Data Structures in Compilation
  • LEX and Input Buffering
  • Token Specification and Recognition
  • YACC
  • Context-Free Grammars
  • Derivation and Parse Trees
  • Capabilities of CFG
Open Unit 1 Notes →
II

Syntax Analysis

Working of parsers and major top-down and bottom-up parsing methods.

  • Working of Parser
  • Top-Down Parsing
  • Bottom-Up Parsing
  • Operator Precedence Parsing
  • Predictive Parsers
  • LR Parsers
  • SLR, Canonical LR and LALR
  • SLR Parsing Tables
  • Canonical LR Parsing Tables
  • LALR Parsing Tables
  • Ambiguous Grammars
  • Automatic Parser Generator
Open Unit 2 Notes →
III

Syntax-Directed Translation

Attribute grammars, syntax trees and translation techniques.

  • Syntax-Directed Definitions
  • Inherited Attributes
  • L-Attributed Definitions
  • S-Attributed Definitions
  • Dependency Graph
  • Construction of Syntax Trees
  • Top-Down Translation
  • Postfix Notation
  • Bottom-Up Evaluation
Open Unit 3 Notes →
IV

Intermediate Code and Runtime Storage

Intermediate representations, memory allocation and symbol table management.

  • Three-Address Code
  • Quadruples and Triples
  • Assignment Statement Translation
  • Boolean Expressions
  • Control Structures
  • Backpatching
  • Static Storage Allocation
  • Dynamic Storage Allocation
  • Stack-Based Memory Allocation
  • Symbol Table Management
Open Unit 4 Notes →
V

Code Optimization and Generation

Organization of optimizer, basic blocks, flow graphs, DAGs, loops and peephole optimization.

  • Organization of Code Optimizer
  • Basic Blocks
  • Flow Graphs
  • DAG Representation of Basic Blocks
  • Loops in Flow Graph
  • Peephole Optimization
  • Basics of Block Optimization
  • Introduction to Code Generation
Open Unit 5 Notes →

Most Important Exam Topics

RGPV Focus
Compiler PhasesDiagram and function of every phase.
LEX and YACCWorking, role and comparison.
Context-Free GrammarDerivations and parse trees.
Top-Down ParsingRecursive descent and predictive parsing.
LR ParsingSLR, CLR and LALR table construction.
Syntax-Directed TranslationS-attributed and L-attributed definitions.
Dependency GraphAttribute evaluation sequence.
Three-Address CodeQuadruples, triples and translation.
BackpatchingBoolean and control-flow translation.
Runtime StorageStatic, dynamic and stack allocation.
Basic Blocks and Flow GraphConstruction and optimization.
Peephole OptimizationLocal optimization techniques.

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Complete Notes

Unit-wise Compiler Design notes for IT603(A).

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Important Questions

Most expected RGPV questions for semester examination.

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PYQ Analysis

Previous-year question analysis and repeated topics.

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Frequently Asked Questions

Student Help
The subject code is IT603(A) for Information Technology VI Semester.
The syllabus contains five units.
Compiler phases, lexical analysis, parsing tables, syntax-directed translation, three-address code, backpatching, runtime storage, basic blocks, flow graphs and optimization are especially important.
Yes. LEX is included under lexical analysis and YACC is included with syntactic specification topics in Unit I.
SLR, Canonical LR and LALR parsers are included in Unit II.