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
..
Hello	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombine	Check if Type is a vector before calling function Type::getVectorNumElements.	2013-03-28 01:28:02 +00:00
Instrumentation	Minor simplification.	2013-03-28 22:40:08 +00:00
IPO	Use a worklist to avoid a sneaky iterator invalidation.	2013-04-02 08:16:45 +00:00
ObjCARC	Remove an optimization where we were changing an objc_autorelease into an objc_autoreleaseReturnValue.	2013-04-03 02:57:24 +00:00
Scalar	Correct assertion condition	2013-04-01 18:13:05 +00:00
Utils	Add all clauses when merging the landing pads. Duplicates will be handled later on.	2013-03-22 20:31:05 +00:00
Vectorize	LoopVectorize: Invert case when we use a vector cmp value to query select cost	2013-03-14 18:54:36 +00:00
CMakeLists.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
LLVMBuild.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
Makefile	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00