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Commit 515a60da authored by Dan Gohman's avatar Dan Gohman
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Teach clang to add metadata tags to calls and invokes in ObjC with 

-fno-objc-arc-exceptions. This will allow the optimizer to perform
optimizations which are only safe under that flag.

This is a part of rdar://10803830.

llvm-svn: 150644
parent 90e7c129
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