Compiler Design is very interesting Subject, if you are excited to know the details of process of compilation in detail. A compiler translates the code written in one language to some other language without changing the meaning of the program.
Compiler Design contains following topics at TCCI:
Introduction to Compilers, Interpreter and compiler, Structure of the Compiler, Lexical Analysis, Parsing, Semantic Analysis, Optimization, Code Generation, Context free grammar, Top-down parsing, Bottom-up parsing, LR parsin.
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Compiler Design is very interesting Subject, if you are excited to know the details of process of compilation in detail. A compiler translates the code written in one language to some other language without changing the meaning of the program.
We provide coaching in the languages like C, C++, JAVA, Python, Project Training, PHP, SEO and many more . TCCI also provide relatable course for the school students and all types of students. So visit TCCI Coaching Institute for your higher education.
TCCI is the one stop institute for the computer lovers to achieve their career in the field of the IT world . They can get all types of the courses to learn at their convenient time and schedule. And students will learn from the faculties who are working in the top universities.
We provide coaching in the languages like C, C++, JAVA, Python, Project Training, PHP, SEO and many more . TCCI also provide relatable course for the school students and all types of students. So visit TCCI Coaching Institute for your higher education.
A compiler translates the code written in one language to some other language without changing the meaning of the program. It is also expected that a compiler should make the target code efficient and optimized in terms of time and space.
A compiler acts as a translator, transforming human-oriented programming languages into computer-oriented machine languages.
Programming Machine
Language Compiler Language
(Source) (Target)
Any compiler must perform two major tasks
Compiler
Analysis of the source program
Synthesis of a machine-language program
Compiler Phases:
The compilation process is a sequence of various phases. Each phase takes input from its previous stage, has its own representation of source program, and feeds its output to the next phase of the compiler. Let us understand the phases of a compiler.
Lexical analysis:
Lexical analysis is the first phase of a compiler. It takes the modified source code from language pre-processors that are written in the form of sentences. The lexical analyzer breaks these syntaxes into a series of tokens, by removing any whitespace or comments in the source code.
A programming language must include the specification of syntax (structure) and semantics (meaning).
Syntax typically means the context-free syntax because of the almost universal use of context-free-grammar (CFGs)
Ex.
a = b + c is syntactically legal
b + c = a is illegal
Token:
The token name is an abstract symbol representing a kind of lexical unit, e.g., a particular keyword, or sequence of input characters denoting an identifier.
Syntax Analysis:
The next phase is called the syntax analysis or parsing. It takes the token produced by lexical analysis as input and generates a parse tree (or syntax tree). In this phase, token arrangements are checked against the source code grammar, i.e. the parser checks if the expression made by the tokens is syntactically correct.
Semantic Analysis:
Semantic analysis checks whether the parse tree constructed follows the rules of language. For example, assignment of values is between compatible data types, and adding string to an integer.
Intermediate Code Generation:
Interpreters are easier to write and can provide better error messages (symbol table is still available) Interpreters are at least 5 times slower than machine code generated by compilers Interpreters also require much more memory than machine code generated by compilers Examples: Perl, Python, Unix Shell, Java, BASIC, LISP
Code Optimization:
The next phase does code optimization of the intermediate code.
Code Generation:
In this phase, the code generator takes the optimized representation of the intermediate code and maps it to the target machine language.
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A compiler translates the code written in one language to some other language without changing the meaning of the program.
A compiler acts as a translator, transforming human-oriented programming languages into computer-oriented machine languages.
======================================
Compiler performs two major tasks:
Analysis of the source program
Synthesis of a machine-language program
Compiler Phases:
The compilation process is a sequence of various phases.
1.Lexical analysis:
Lexical analysis is the first phase of a compiler.
It takes the modified source code from language pre-processors and breaks these syntaxes into a series of tokens, by removing any whitespace or comments in the source code.
It takes the token produced by lexical analysis as input and generates a parse tree (or syntax tree).
3. Semantic Analysis:
Semantic analysis checks whether the parse tree constructed follows the rules of language. For example, assignment of values is between compatible data types, and adding string to an integer.
4. Intermediate Code Generation:
Interpreters are easier to write and can provide better error messages (symbol table is still available)
5. Code Optimization:
The next phase does code optimization of the intermediate code.
6. Code Generation:
In this phase, the code generator takes the optimized representation of the intermediate code and maps it to the target machine language.
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