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Commit fa31d38a authored by Devang Patel's avatar Devang Patel
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Introduce DebugInfoProbe. This is used to monitor how llvm optimizer is...

Introduce DebugInfoProbe. This is used to monitor how llvm optimizer is treating debugging information. 
It generates output that lools like

8 times line number info lost by Scalar Replacement of Aggregates (SSAUp) 
1 times line number info lost by Simplify well-known library calls 
12 times variable info lost by Jump Threading

llvm-svn: 127381
parent b4c6a344
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