How a Compiler Works ?

How a Compiler Works ? Submitted By- Hirdesh Vishwdewa

[object Object],What actually a compiler is? Translation from source to object Source language Compiler (A comp. program) object/ target language

Preprocessing ,[object Object],[object Object]

Preprocessing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Preprocessing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Preprocessing ,[object Object],[object Object],[object Object],[object Object]

Various stages for the compilation of a program. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lexical Analysis ,[object Object],[object Object]

Lexical analysis of a simple program ,[object Object],[object Object],[object Object],Now the compiler will use these tokens for further the stages. keyword constant operator ) 18 = > age ( if

Syntactical analysis ,[object Object],[object Object]

[object Object],[object Object],[object Object],Syntactical analysis

Semantic analysis ,[object Object],[object Object],[object Object],float String Error – Type do not match increment

Semantic analysis ,[object Object],[object Object],Integer type 1. 5 is an integer while 3.0 be a double therefore through type conversion concept 5 first converts into double, and the expression would then be translated into double, so the addition could be performed. 2.Then compiler would recognize x as float through another conversion.

Intermediate code generation ,[object Object],[object Object],(optional)

Intermediate code generation As in java- Intermediate code generation FRONT END EXISTING CODE BYTE CODES (Intermediate code)

Code optimization ,[object Object],[object Object],[object Object]

Code Generation ,[object Object],[object Object]

[object Object],linker GENERATED OBJECT CODE EXECUTABLE PROGRAM OBJECT CODE OBJECT CODE

Bibliography ,[object Object],[object Object]

How a Compiler Works ?

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