[llvm-dev] Developing a pass for the backend

[Pedro Lopes via llvm-dev]

Hi,

Is there a way to map a MachineInstr to the respective LLVM IR using a
MachineFunctionPass (or something else) in my backend?

I need to read some metadata associated with LLVM IR instructions and
I was thinking of using some debug information (DebugLoc?) to do so.
However, By inspecting the LLVM source code I have not been able to
find any mapping between a MachineInstr and a LLVM IR Instruction.

Thanks,
Tiago