Commit Graph

10 Commits

Author SHA1 Message Date
John McCall ed7b27830d Fix a Sema invariant bug that I recently introduced involving
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.

llvm-svn: 154189
2012-04-06 18:20:53 +00:00
Douglas Gregor 8ca0c6408e Make sure that we infer __strong, etc. when we instantiate variables
under ARC. Fixes <rdar://problem/10530209>.

llvm-svn: 146307
2011-12-10 01:22:52 +00:00
Douglas Gregor ddaae8e4e5 Use the right CHECK prefix so that we actually do this checking. Miraculously, this hasn't broken
llvm-svn: 146303
2011-12-10 00:28:18 +00:00
Douglas Gregor c7f46f20d1 When we manage to re-use an expression during tree transformation (=
template instantiation), and that expression might produce a
temporary, invoke MaybeBindToTemporary. Otherwise, we forget to
destroy objects, release objects, etc. Fixes <rdar://problem/10531073>.

llvm-svn: 146301
2011-12-10 00:23:21 +00:00
John McCall 9b0a7cea0f Make -fobjc-nonfragile-abi the -cc1 default, since it's the
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.

llvm-svn: 140957
2011-10-02 01:16:38 +00:00
John McCall 538482373b Clean up the analysis of the collection operand to ObjC
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

llvm-svn: 136204
2011-07-27 01:07:15 +00:00
John McCall 4db5c3c83a In ARC, reclaim all return values of retainable type, not just those
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

llvm-svn: 134605
2011-07-07 06:58:02 +00:00
John McCall 24fc0decfe Change the driver's logic about Objective-C runtimes: abstract out a
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.

llvm-svn: 134453
2011-07-06 00:26:06 +00:00
John McCall fa27234afb Be sure to try a final ARC-production even in Objective-C++.
llvm-svn: 133215
2011-06-16 23:24:51 +00:00
John McCall 31168b077c Automatic Reference Counting.
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.

llvm-svn: 133103
2011-06-15 23:02:42 +00:00