[llvm-dev] Match LLVM IR back to assembly

Bogdan Alexandru Stoica via llvm-dev llvm-dev at lists.llvm.org
Fri Jul 1 03:07:59 PDT 2016

Hi all,

I am trying to write a pass which matches LLVM IR back to assembly in order
to track PCs corresponding to certain LLVM IR instructions on an x86-64
machine. LLVM's debug-ir options is/was doing exactly this, but on older
versions (i.e. pre-3.6) it crashes while on newer versions it has been

I've recently tried debug-ir with 3.4 and 3.5, but this assert fails:
llc: llvm-3.4/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1614: void
llvm::DwarfDebug::beginFunction(const llvm::MachineFunction*): Assertion
`TheCU && "Unable to find compile unit!"' failed

There is a previous discussion on this, yet no fix:

Any tips for how to solve this would be greatly appreciated.

Thank you,
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