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Author SHA1 Message Date
Bill Wendling a032374ea0 Use references to attribute groups on the call/invoke instructions. 
Listing all of the attributes for the callee of a call/invoke instruction is way
too much and makes the IR unreadable. Use references to attributes instead.

llvm-svn: 175877
 2013-02-22 09:09:42 +00:00
Dan Gohman 728db4997a Implement proper ObjC ARC objc_retainBlock "escape" analysis, so that 
the optimizer doesn't eliminate objc_retainBlock calls which are needed
for their side effect of copying blocks onto the heap.
This implements rdar://10361249.

llvm-svn: 148076
 2012-01-13 00:39:07 +00:00