Michael Gottesman a67a20c95f Remove an optimization where we were changing an objc_autorelease into an objc_autoreleaseReturnValue. ... The semantics of ARC implies that a pointer passed into an objc_autorelease must live until some point (potentially down the stack) where an autorelease pool is popped. On the other hand, an objc_autoreleaseReturnValue just signifies that the object must live until the end of the given function at least. Thus objc_autorelease is stronger than objc_autoreleaseReturnValue in terms of the semantics of ARC* implying that performing the given strength reduction without any knowledge of how this relates to the autorelease pool pop that is further up the stack violates the semantics of ARC. *Even though objc_autoreleaseReturnValue if you know that no RV optimization will occur is more computationally expensive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178612 91177308-0d34-0410-b5e6-96231b3b80d8		2013-04-03 02:57:24 +00:00
..
CMakeLists.txt
DependencyAnalysis.cpp	Kill every call to @clang.arc.use in the ARC contract phase.	2013-03-22 21:38:36 +00:00
DependencyAnalysis.h
LLVMBuild.txt	Added missing dashes from header declaration comment.	2013-01-29 04:53:55 +00:00
Makefile
ObjCARC.cpp	Make helpers static. Add missing include so LLVMInitializeObjCARCOpts gets C linkage.	2013-02-15 12:30:38 +00:00
ObjCARC.h	Add clang.arc.used to ModuleHasARC so ARC always runs if said call is present in a module.	2013-03-29 21:15:23 +00:00
ObjCARCAliasAnalysis.cpp	Sorted includes using utils/sort_includes.	2013-01-29 04:20:52 +00:00
ObjCARCAliasAnalysis.h
ObjCARCAPElim.cpp	Hopefully fix the Windows build failure introduced in r173769	2013-01-29 09:09:27 +00:00
ObjCARCContract.cpp	Changed isNullOrUndef => IsNullOrUndef and isNoopInstruction => IsNoopInstruction so that all helper functions are named similarly in ObjCARC.h.	2013-03-25 09:27:43 +00:00
ObjCARCExpand.cpp	Sorted includes using utils/sort_includes.	2013-01-29 04:20:52 +00:00
ObjCARCOpts.cpp	Remove an optimization where we were changing an objc_autorelease into an objc_autoreleaseReturnValue.	2013-04-03 02:57:24 +00:00
ObjCARCUtil.cpp	[ObjCARC Annotations] Added support for displaying the state of pointers at the bottom/top of BBs of the ARC dataflow analysis for both bottomup and topdown analyses.	2013-03-26 00:42:09 +00:00
ProvenanceAnalysis.cpp	Changed isStoredObjCPointer => IsStoredObjCPointer. No functionality change.	2013-02-12 23:35:08 +00:00
ProvenanceAnalysis.h	Fixed some whitespace/80+ violations. Also added a space after a namespace declaration.	2013-01-29 04:58:30 +00:00