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Commit Graph

Author	SHA1	Message	Date
Dan Gohman	a974beaa1f	Teach the ARC optimizer about the !clang.arc.copy_on_escape metadata tag on objc_retainBlock calls, which indicates that they may be optimized away. rdar://10211286. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142298 91177308-0d34-0410-b5e6-96231b3b80d8	2011-10-17 22:53:25 +00:00
Dan Gohman	597fece886	Don't eliminate objc_retainBlock calls on stack objects if the objc_retainBlock call is potentially responsible for copying the block to the heap to extend its lifetime. rdar://10209613. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140814 91177308-0d34-0410-b5e6-96231b3b80d8	2011-09-29 22:25:23 +00:00

Author

SHA1

Message

Date

Dan Gohman

a974beaa1f

Teach the ARC optimizer about the !clang.arc.copy_on_escape metadata

tag on objc_retainBlock calls, which indicates that they may be
optimized away. rdar://10211286.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142298 91177308-0d34-0410-b5e6-96231b3b80d8

2011-10-17 22:53:25 +00:00

Dan Gohman

597fece886

Don't eliminate objc_retainBlock calls on stack objects if the

objc_retainBlock call is potentially responsible for copying
the block to the heap to extend its lifetime. rdar://10209613.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140814 91177308-0d34-0410-b5e6-96231b3b80d8

2011-09-29 22:25:23 +00:00

2 Commits