ANALYSIS LEXICAL ANALYSISThis analysis identify C
tokens.Complete program is divided into number of
token.printf(%d,x); Here, in above example printf, %d, a are C
token
LEXICAL ANALYSIS(cont.)
SYNTAX ANALYSIS OR PARSERCheck syntax.Uses context free
grammarTokens converted to parse tree using syntax analysisUses
parsing i.e. top down parsing and bottom up parsing
SYNTAX ANALYSIS (cont.)
Parse tree generate by tokens using syntax analysis.
SEMANTIC ANALYSISIdentify static, dynamic, operational,
denotation semanticsSemantic means meaning. It identify meaning of
code means it check whether the code is written in proper order or
not.It check meaning of codeType checking is performedContext free
grammar are used
SYNTHESIS CODE GENERATION
CODE GENERATIONObject code is converted in pure machine
code(10101111000110) or pure assembly code.Efficient compiler
generate pure machine code.It uses forward reference table to store
addressCode generation include hardware checking
CODE OPTIMIZATIONIt optimize code by reducing strength and
decrease time consumptionRemove unnecessary code from program by
showing warning message that it cannot be used in program.E.g -
for(i=0;i
