[llvm-dev] Editing metadata

[deadal nix via llvm-dev]

Hi all,

I'm using the JIT capabilities of LLVM. But so far, I've been unable to use
the debug capabilities of LLVM in conjunction with the JIT. The problematic
scenario goes as follow :
 - Emit some IR with debug infos.
 - Install hooks to get back into some codepath that I do not wish to
codegen at this stage.
 - JIT the method. This require to finalize the DIBuilder to complete the
emission of debug metadata.
 - Later on, emit IR for some of the missing branches. Here the problem
surface :
    - Without debug infos, the codegen for this specific method can be
invalidated and redone, all is fine.
    - With debug infos, the metadata have been finalized already, and it
doesn't seems that it is possible to revert this

Is there a way to make that work ? If not, is there a patch I can work on
to make that work ?

Thank in advance,
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