Expert: John OConnor - 3/14/2010

Question
Good day please what is the concept of code generation,intermediate representation,intermediate code generation,object code generation and implementation of code generation.

Answer
It sounds like you're talking about some of the steps to compiling.

Check out the wikipedia article http://en.wikipedia.org/wiki/Compiler for a more thorough understanding of the compilation process.

In a nutshell, you start with a basic text file in your target programming language (for example, C).  Generation of the initial code is usually done by a person, although there are tools that are designed to generate code from higher level designs, such as UML, or even convert from higher level languages (see http://developers.facebook.com/news.php?story=358&blog=1).

Following code generation, a compiler will usually make several passes (depending on the compiler).  Each of these passes does a certain step.  

In your case, each of the things you asked about represents a pass by the compiler.  Intermediate Representation is the first pass, and optimizes your code by replacing variables with their appropriate values and removing non-functional methods.  The compiler then generates an intermediate code in a lower-level language (usually Assembly) from your optimized higher level language.  The assembly code is then compiled into a binary "Object" file, which is done during the object code generation stage.

So, the pattern is: Human generates C code.  Compiler optimizes C code. Compiler generates assembly code from optimized C code.  Assembly turns the generated assembly code into object files (binary) in the native format of the processor you're using.

Also, please clarify what you mean by "implementation of code generation".

Thanks.