How to extract instruction embedded within an instruction in LLVM-IR

Beginners
1

Sometimes, in LLVM-IR an instruction is ‘embedded’ inside of another instruction e.g:

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Here, a gep instruction has been embedded inside of a load instruction. How can I access the operands of this gep instruction?
Thanks

2

LoadInst has a getPointerOperand() method. If you believe that the pointer is a gep then that should give you access to the gep.

3

I have tried using this approach:
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The second dyn_cast always return Null…

4

Found the solution: Detecting GEPs embedded inside other instructions