Front-end and Back-end
Source proram -> compiler -> [ (front) IR (end) ] -> target prmgram
- Front end
- Recognizes legal or illegal program- Reports errors in useful way.
- Produces IR
- Back end
- Translages IR into machine code- Decide which value to keep in register
- Scanner is for spelling checking, makes token
- Parser is for grammatical analysis with token, makes syntax tree
- Semantic analyzer : Declaration and type checking
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