llvm/lib/Transforms/Scalar/ObjCARC.cpp · 7ba71be3922b45a5f7ed638cf8bcc2b7338d4fbc · Roger Ferrer / llvm-epi-0.8 · GitLab

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Teach the ARC optimizer about the !clang.arc.copy_on_escape metadata · a7107f99
Dan Gohman authored Oct 17, 2011
```
tag on objc_retainBlock calls, which indicates that they may be
optimized away. rdar://10211286.

llvm-svn: 142298
```
a7107f99