What is the purpose of symbol table?
Symbol table is an important data structure created and maintained by compilers in order to store information about the occurrence of various entities such as variable names, function names, objects, classes, interfaces, etc. Symbol table is used by both the analysis and the synthesis parts of a compiler.
What is the use of symbol table in assembler?
The symbol table contains information to locate and relocate symbolic definitions and references. The assembler creates the symbol table section for the object file. It makes an entry in the symbol table for each symbol that is defined or referenced in the input file and is needed during linking.
Which phase of compiler does use symbol table?
The information in the symbol table is entered in the lexical analysis and syntax analysis phase, however, is used in later phases of compiler (semantic analysis, intermediate code generation, code optimization, and code generation).
What is literal table in compiler design?
In computer science, and specifically in compiler and assembler design, a literal pool is a lookup table used to hold literals during assembly and execution.
Which one is type of lexeme?
Explanation: Lexical Analysis Identifies Different Lexical Units in a source Code. 9. Which one is a type of Lexeme? Explanation: All of them along with Operators are different types of lexemes.
What is the purpose of location counter?
Each section of an assembler language program has a location counter used to assign storage addresses to your program’s statements. As the instructions of a source module are being assembled, the location counter keeps track of the current location in storage.
How many parts of compiler are there?
A compiler consists of three main parts:the frontend,the middle-end,and the backend. The front end checks whether the program is correctly written in terms of the programming language syntax and semantics.
What are the types of compiler?
Types of Compiler
- Cross Compilers. They produce an executable machine code for a platform but, this platform is not the one on which the compiler is running.
- Bootstrap Compilers. These compilers are written in a programming language that they have to compile.
- Source to source/transcompiler. …
What is the use of lexical analyzer?
Lexical analysis is the first phase of a compiler. It takes modified source code from language preprocessors 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.