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Hey John, Yes this is what I am looking for. I wrote a code as I described in my first mail and I am getting desired result except when the chain encounters load instruction (you have also mentioned the that u skip loads). I think the recursive trace back for a Value V depending on Operands (o1,...oN) should terminate at the nearest definition of the oN (i.e. it is not an instruction but a LLVM

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On 8/4/11 1:53 PM, Manish Gupta wrote: > It would be great help if someone can point me to similar code in > Analysis or Transform, i.e. tracing value dependencies chains. If I understand correctly, given an instruction I, you want to find its operands o1 through oN, and then find the instructions (or LLVM values) that generate the values o1 through oN, and then find the instructions