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Eran, Is there any chance you could boil this down to a small reproducer? I’ve got a mid-to-long-term goal of getting rid of the ugliness in LLDB that Jim mentioned, and fixing your problem would be a good first step. Thanks, Andy From: Jim Grosbach [mailto:grosbach at apple.com] Sent: Wednesday, April 10, 2013 4:19 PM To: Kaylor, Andrew; Jiong Wang Cc: Weiss, Eran; llvmdev at cs.uiuc.edu

Existing clients (LLDB) deal with externals by resolving them to constant function pointers that are referenced in the IR. That’s obviously ugly as hell, but it gets things done. The old JIT was able to simplify things because it assumed the JITed code was running in the same process as the JIT compiler. The MCJIT doesn’t assume that, so it has to handle more possibilities. For example, that the

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