π Compiler design is the study of compilers and their different phases.
π» Early computers understood only zeros and ones, and instructions were given using punch cards.
π€ The need for a language translator arose due to the difficulty of communicating with computers using binary code.
π‘ Language translators were developed to convert code into machine language, with the first one being the assembler.
π Interpreted languages like PHP and Python run programs line by line, converting them into machine code.
β‘ Compiled languages like C and C++ directly convert programs into machine code, resulting in faster and more efficient execution.
π Compiler design involves translating human-readable code into machine-readable code.
π» The C language syntax is similar to the English language, making it easy to understand for humans.
π€ However, machines cannot understand human-readable code directly and require it to be compiled into a machine-readable format.
π The language translator converts high-level language code into machine code.
π§ The language translator for the C language has four phases: preprocessor, compiler, assembler, and executable code generation.
π» During execution, the relocatable machine code is allocated to the main memory with sequential addresses.
π Compiler design consists of six phases: lexical analysis, syntax analysis, semantic analysis, intermediate code generation, code optimization, and target code generation.
π» The first four phases (lexical, syntax, semantic analysis, and intermediate code generation) are known as the front end, while the remaining two (code optimization and target code generation) are called the backend.
π§ To create a C compiler for a different operating system, the backend phases can be modified according to the new specifications and integrated with the existing front end.
π The compiler design course focuses on six phases: lexical analysis, syntax analysis, semantic analysis, intermediate code generation, code optimization, and runtime environment.
ποΈ The symbol table manager stores information gathered from the analysis phase and is used by the synthesis phase.
βοΈ The error handler detects and recovers from errors encountered during the compilation process.
π Compiler design is not a basic course and requires a basic understanding of the theory of computation.
π― This course is suitable for college and university students, competitive exam aspirants, and computer science enthusiasts.
π₯ The course covers seven chapters and provides comprehensive learning through clear illustrations and numerical problem-solving.
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