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It's a kind of implicit conversion, which we generally drop, but
more importantly it's got very specific placement requirements.
rdar://13617051
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179254 91177308-0d34-0410-b5e6-96231b3b80d8
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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
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177813 91177308-0d34-0410-b5e6-96231b3b80d8
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objc_loadWeak. This retains and autorelease the weakly-refereced
object. This hidden autorelease sometimes makes __weak variable alive even
after the weak reference is erased, because the object is still referenced
by an autorelease pool. This patch overcomes this behavior by loading a
weak object via call to objc_loadWeakRetained(), followng it by objc_release
at appropriate place, thereby removing the hidden autorelease. // rdar://10849570
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168740 91177308-0d34-0410-b5e6-96231b3b80d8
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this-adjustment thunk in ARC++.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161014 91177308-0d34-0410-b5e6-96231b3b80d8
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the template instantiation of statement-expressions.
I think it was jyasskin who had a crashing testcase in this area;
hopefully this fixes it and he can find his testcase and check it in.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154189 91177308-0d34-0410-b5e6-96231b3b80d8
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under ARC. Fixes <rdar://problem/10530209>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146307 91177308-0d34-0410-b5e6-96231b3b80d8
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Miraculously, this hasn't broken
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template instantiation), and that expression might produce a
temporary, invoke MaybeBindToTemporary. Otherwise, we forget to
destroy objects, release objects, etc. Fixes <rdar://problem/10531073>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146301 91177308-0d34-0410-b5e6-96231b3b80d8
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increasingly prevailing case to the point that new features
like ARC don't even support the fragile ABI anymore.
This required a little bit of reshuffling with exceptions
because a check was assuming that ObjCNonFragileABI was
only being set in ObjC mode, and that's actually a bit
obnoxious to do.
Most, though, it involved a perl script to translate a ton
of test cases.
Mostly no functionality change for driver users, although
there are corner cases with disabling language-specific
exceptions that we should handle more correctly now.
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for-in statements; specifically, make sure to close over any
temporaries or cleanups it might require. In ARC, this has
implications for the lifetime of the collection, so emit it
with a retain and release it upon exit from the loop.
rdar://problem/9817306
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where we have an immediate need of a retained value.
As an exception, don't do this when the call is made as the immediate
operand of a __bridge retain. This is more in the way of a workaround
than an actual guarantee, so it's acceptable to be brittle here.
rdar://problem/9504800
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structure to hold inferred information, then propagate each invididual
bit down to -cc1. Separate the bits of "supports weak" and "has a native
ARC runtime"; make the latter a CodeGenOption.
The tool chain is still driving this decision, because it's the place that
has the required deployment target information on Darwin, but at least it's
better-factored now.
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133215 91177308-0d34-0410-b5e6-96231b3b80d8
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Language-design credit goes to a lot of people, but I particularly want
to single out Blaine Garst and Patrick Beard for their contributions.
Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself,
in no particular order.
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