[LLVMdev] Accessing metadata & creating DIVariable

[Vedavyas Duggirala]

Hi,

> You need to call di.createCompileUnit() once for your translation unit in the beginning. You don't need to keep track of CU yourself. DIBuilder will take care of it. After words, you can call di.createBasicType(..) and it will work.

Actually it doesn't. But if I call di.createCompileUnit(file, dir,
producer, ...) with file or dir different from that of  CU already in
the file, then it works. It isn't sufficient if the producer is
different. That fixes my problem, so many thanks.

If  DIBuiler constructor would  pick existing CU from the Module,  we
can retain original CU entry.  But, I do no have enough knowledge of
DWARF or LLVM, to know if it is valid/reasonable thing to do.

thanks,
Vyas