[LLVMdev] Associate IR instruction with corresponding assembly

[Eric Christopher]

On Sun, May 18, 2014 at 10:28 PM, Tobias Grosser <tobias at grosser.es> wrote:
> On 19/05/2014 00:54, shruti padmanabha wrote:
>>
>> Hi,
>>
>> Thanks for the pointer. I am unfortunately running into llc problems with
>> this pass.
>> I did
>> *opt  -debug-ir   hello.bc -o hello.deb.bc*
>>
>> *llc -march=arm -debug  -O0 hello.deb.bc  -o hello.deb.s*
>>
>>
>> This is aborting with the error: 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.
>> I'm assuming this is because llc found some errors in the metadata that
>> debug-ir prints out. How do I find and correct this?
>
>
> This is indeed surprising. I have no idea where this is coming from. Does
> this only happen on ARM? Can you attach the debug.bc file? Or even better,
> open a bug report for that?
>
> I included Daniel who committed the -debug-ir pass as well as Eric who has
> better knowledge about debug info than me.
>

Are you mixing versions of llc and opt? I.e. are they both built from
the same version?

-eric