[LLVMdev] DIBuilder - what's with the null compile units?

[Talin]

Sometime about two months ago, something changed in LLVM that broke my
frontend's ability to generate debug info. This was around the time that the
requirement to call DIBuilder::finalize() was added (and yes, I am calling
it.) Specifically, what I am seeing is an assertion failure in llc because
it can't find the compile unit for a subroutine.

I took a look at the code in DIBuilder.cpp, and I see that indeed it is
setting the compile unit to null for all of the various descriptors being
created. I assume that the intent is that these references would be filled
in later - but apparently this is not happening in my case. Any idea what
could be wrong?

-- 
-- Talin
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