[LLVMdev] Query regarding metadata in LLVM

[Mohit Mishra]

I'm interested in labeling each instruction produced in machine code when I
compiler my program using LLVm. At first, I made a Module pass that
basically labels every function and its associated instructions. And I
attached a metadata all along just like Debug Loc. However, it turns out
that each IR instruction may correspond to multiple MC instructions, and if
these MC instructions undergo re-ordering due to dynamic optimization, I
may end up with re-ordered MC instructions with the same label attached to
them. I wish to avoid this situation.

Thanks,
Mohit.
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