[LLVMdev] Induction Variables vs Loop Control Variable

[Chris Lattner]

On Tue, 5 Feb 2008, Prabhat Kumar Saraswat wrote:
>     I was wondering if its possible to identify loop control
> variables from the induction variables in a Loop using LLVM.
> Also, How does one can use the LoopInfo class to identify the natural
> loops from the IR. In other words how to use the class in the pass?

I'd strongly suggest looking at some existing loop pass like LICM or loop 
strength reduction or induction variable simplification.  Induction 
Variable Simplification specifically will show you how to rely on it and 
how to identifier induction variables.

-Chris

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