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Author SHA1 Message Date
Oren Ben Simhon bada0d4628 Reusing an existing attribute diagnostic 
In a previous patch, a new generic error diagnostic for inconsistent attributes was added.
In this commit I reuse this diagnostic for ns_returns_retained attribute check.

Differential Revision: https://reviews.llvm.org/D32697

llvm-svn: 302024
 2017-05-03 14:05:00 +00:00
Patrick Beard acfbe9e1f2 Added a new attribute, objc_root_class, which informs the compiler when a root class is intentionally declared. 
The warning this inhibits, -Wobjc-root-class, is opt-in for now. However, all clang unit tests that would trigger
the warning have been updated to use -Wno-objc-root-class. <rdar://problem/7446698>

llvm-svn: 154187
 2012-04-06 18:12:22 +00:00
Douglas Gregor f1404d7d49 Under ARC, merge the bit corresponding to the ns_returns_retained 
attribute from the first declaration to later declarations. Fixes
<rdar://problem/10142572>.

llvm-svn: 141957
 2011-10-14 15:55:40 +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
Fariborz Jahanian a644f9cb73 arc-objc++: Issue an arc specific diagnostic when overload resolution 
fails because of lifetime differences of parameter and argument type.
// rdar://9790531

llvm-svn: 135593
 2011-07-20 17:14:09 +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 63f844494d ARC writeback isn't supposed to apply to local indirect pointers, 
only to pointers to locals.  But it should work inside blocks, too.

llvm-svn: 133969
 2011-06-27 23:59:58 +00:00
Argyrios Kyrtzidis cff00d9c12 Rename objc_lifetime -> objc_ownership, and modify diagnostics to talk about 'ownership', not 'lifetime'. 
rdar://9477613.

llvm-svn: 133779
 2011-06-24 00:08:59 +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