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CS606 Handouts pdf
Course Category: Computer Science/Information Technology CS606 Handouts pdf
CS606: Compiler Construction Handouts (PDF)
A compiler is a computer program that helps you to translate source code written in high level language into standard machine language. Translates written code from one program language to another language without changing the meaning of the code. The compiler also makes the last code more efficient and optimized for action time and memory space. CS606 Handouts pdf
Passes of a Compiler. Lexical Analysis, Specification of Tokens, Recognition of Tokens, Top-down Parsing, Predictive Parsing, Recursive Descent Parsing, LL Parsing, LL Passing Table Construction, Left Factoring, Bottom-up Parsing, Shift-Reduce Parsing, LR(1) Parsing, LR(1) Canonical Collection of Items, LR(1) Parsing, Shift-Reduce Conflicts, LALR Parsing, Parser Generators – YACC, Sematic Analysis, Attribute Grammars, Ad-hoc scheme for attribute grammars, Intermediate Representation (IR), Intermediate Representation taxonomy, Syntax-directed translation: assignment statement, Code Generation, Code Optimization CS606 Handouts pdf
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CS606: Compiler Construction
What are Compilers?
On a computer, a compiler is a computer program that translates computer code written in one programming language (source language) into another language (target language). The term “compiler” is primarily used for programs that translate source code from advanced programming language to standard language (e.g., object code, or machine code) to create usable applications. The merging process incorporates basic translation techniques and error detection. The integration process goes through lexical, syntax, and semantic analysis at the end with code production and optimization at the end. Here is the same terminology used in the compilation.
A preprocessor is considered part of the Compilation. It is a tool that produces Compiler input. It is responsible for macro processing, enlargement, language expansion, etc.
A translator is like a Compiler that translates high level language into standard machine language. The main difference between the two is that the translator reads and translates the code line by line. The compiler reads all code at once and creates machine code.
Translates the assembly language code into understandable machine language. The output of the compound is known as the component file component of the machine command and the data required to store these commands in memory.
The Linker helps you to connect and merge files of various objects to create a usable file. All of these files may be linked to different links. The main function of the link is to search for the modules called the system and to locate the memory location where all the modules are stored.
A loader is part of the OS, which performs the functions of loading usable files into memory and running them. It also calculates system size which creates extra memory space.
Cross compiler in compiler design is a platform that helps you generate usable code.
Source-to-source link is a term used when the source code of another programming language is translated into a foreign language source.
Issues in Compilation
Translating code from another human-readable form to machine code should be “correct”, that is, the generated machine code should accurately use the same calculation as the source code. Generally, there is no translation that is different from the source language to the target language. There is no algorithm available for “proper translation”. The translation is a complex process. The source language and the generated code are very different. To manage this complex process, translation is done in many worlds.
Compiler construction is a computer science field that deals with the theory and practice of developing programming languages and their related producers. Part of the theory deals mainly with the syntax, grammar, and semantics of programming languages. One could argue that this gives this particular area of computer science a strong bond with languages. Building a compiler is a complex task.
A good compiler combines ideas from official language theory, from the study of algorithms, artificial intelligence, and program design, from computer architecture to programming language theory, and uses the problem to translate the program. The compiler includes selfish algorithms, heuristic techniques, graph algorithms, dynamic editing, dfas and nfas, fixed point algorithms, positioning, allocation and naming, and plumbing management.
Features of Compilers
- Speed of compilation
- Preserve the correct the meaning of the code
- The speed of the target code
- Recognize legal and illegal program constructs
- Good error reporting/handling
- Code debugging help
Types of Compilers
Following are the different types of Compilers:
- Single Pass Compilers
- Two-Pass Compilers
- Multipass Compilers
Tasks of Compiler
The main tasks performed by the Compiler are:
- Allows you to construct the desired target program from the intermediate representation and also create the symbol table
- Breaks up the source program into pieces and imposes grammatical structure on them
- Compiles source code and detects errors in it
- Manage storage of all variables and codes.
- Read, analyze the entire program, and translate it to semantically equivalent
- Support for separate compilation
- Translating the source code into object code depending upon the type of machine