[LLVMdev] Associate IR instruction with corresponding assembly

[shruti padmanabha]

Oh, okay.
Which was the last version of llc that worked with the pass? I could try
working with an older version that is compatible.

Is there something else I can hack up to serve my purpose of mapping
assembly -> IR instructions?

Thanks for the help!
Shruti


On Mon, May 19, 2014 at 11:24 AM, Eric Christopher <echristo at gmail.com>wrote:

> Interesting. My guess is that the debug-ir pass wasn't updated when we
> changed some version of the debug metadata and so isn't producing good
> metadata.
>
> I'm not sure when I'll get to updating it though and it looks like
> Daniel's address is bouncing.
>
> -eric
>
> On Mon, May 19, 2014 at 8:22 AM, shruti padmanabha <shrupad at umich.edu>
> wrote:
> > No. They're both from the 3.4 version of llvm.
> > Thanks,
> > Shruti
> >
> >
> > On Mon, May 19, 2014 at 11:01 AM, Eric Christopher <echristo at gmail.com>
> > wrote:
> >>
> >> 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
> >
> >
>



-- 
Shruti Padmanabha
University of Michigan, Ann Arbor
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