Code Generation and Machine-dependent Optimization283
schemes can be used to describe the mapping between the IR and target language. To get better code
quality, we should:
c
Make good use of the target’s instructions, registers, etc.
c
Use refined compilation schemes to deal with special cases.
9.5 Procedures and Function Calls
Functions are an important and widespread abstraction mechanism in many different programming
languages. A function is a first step to reusable code. A function name carries its returned value.
A procedure is a function that does not return any useful value via its name, and it is used for its side
effects only. We now ...
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