[LLVMdev] Loop exit condition analysis

[Hanfeng Qin]

Hi all,
I am doing loop exit condition analysis. As the following sample code 
segments demonstrated,

....
int *c = &a;
while (*c == 0);
....

I want to decide which variables are related to ending this spin-loop. 
E.g., in above sample, c is the direct variable while a is an indirect 
one. Does LLVM provide any existing analysis tools or APIs I can leverage?
I am new to compiler optimization. Wish any body can give some suggestions.

Best,
Hanfeng
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