John McCall eff1884274 Under ARC, when we're passing the address of a strong variable ...

to an out-parameter using the indirect-writeback conversion,
and we copied the current value of the variable to the temporary,
make sure that we register an intrinsic use of that value with
the optimizer so that the value won't get released until we have
a chance to retain it.

rdar://13195034

llvm-svn: 177813

2013-03-23 02:35:54 +00:00

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