[PATCH] D14043: [bugpoint] Add a named metadata (+their operands) reducer

[Keno Fischer via llvm-commits]

loladiro created this revision.
loladiro added a reviewer: dexonsmith.
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We frequently run bugpoint on a linked-together module of all modules we jit while compiling the julia standard library. As a result, this module has a very large number of compile units (10000+) in `llvm.dbg.cu`, which didn't get reduced at all, requiring manual post processing. This is an attempt to
have bugpoint go through and attempt to reduce the number of global named metadata nodes as well as their operands, to cut down the number of roots for such metadata.

Repository:
  rL LLVM

http://reviews.llvm.org/D14043

Files:
  tools/bugpoint/CrashDebugger.cpp

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