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Author SHA1 Message Date
Argyrios Kyrtzidis ce9b739999 [arcmt] Before applying '__weak' check whether the objc class is annotated with objc_arc_weak_reference_unavailable 
or is in a list of classes not supporting 'weak'.

rdar://9489367.

llvm-svn: 135002
 2011-07-12 22:05:17 +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
Argyrios Kyrtzidis e5b475c688 [arcmt] Break apart Transforms.cpp. 
llvm-svn: 133539
 2011-06-21 20:20:39 +00:00