Intermediate Code Generation Intermediate codes are machine independent codes,but they are close to machine instructions. ● The given program in a source language is converted to an equivalent program in an intermediate language by the intermediate code generator. Intermediate language can be many different languages,and the designer of the compiler decides this intermediate language. syntax trees can be used as an intermediate language 一 postfix notation can be used as an intermediate language. three-address code (Quadraples)can be used as an intermediate language we will use quadraples to discuss intermediate code generation quadraples are close to machine instructions,but they are not actual machine instructions. some programming languages have well defined intermediate languages java-java virtual machine prolog-warren abstract machine In fact,there are byte-code emulators to execute instructions in these intermediate languages CS308 Compiler Theory 2Intermediate Code Generation • Intermediate codes are machine independent codes, but they are close to machine instr ctions to machine instructions. • The given program in a source language is converted to an equivalent program in an intermediate language by the intermediate equivalent program in an intermediate language by the intermediate code generator. • Intermediate language can be many different languages, and the designer of the compiler decides this intermediate language. – syntax trees can be used as an intermediate language. – p gg ostfix notation can be used as an intermediate lan gua ge. – three-address code (Quadraples) can be used as an intermediate language • we will use quadraples to discuss intermediate code generation • qp , y uadra ples are close to machine instructions, but the y are not actual machine instructions. – some programming languages have well defined intermediate languages. • java – java virtual machine • prolog – warren abstract machine CS308 Compiler Theory 2 • In fact, there are byte-code emulators to execute instructions in these intermediate languages