[llvm-dev] Reg: Adding Intrinsic at start of every function

[Sai Venkata Krishnan V via llvm-dev]

Hello Everyone
   I have create a new intrinsic in RISCV and I am trying to insert it at
the start of every function based on Command-Line argument which determines
the list of functions to omit. I expect this intrinsic to be inserted at
the start of function as first instruction. Is this possible with a normal
Module pass using opt command? Or, should I look into MachineFunction pass?
Please guide me in this.

Thanking you
Sai
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