Michael Gottesman 3f4613310d [objc-arc] Added ImpreciseAutoreleaseSet to track autorelease calls that were once autoreleaseRV instructions. ... Due to the semantics of ARC, we must be extremely conservative with autorelease calls inserted by the frontend since ARC gaurantees that said object will be in the autorelease pool after that point, an optimization invariant that the optimizer must respect. On the other hand, we are allowed significantly more flexibility with autoreleaseRV instructions. Often times though this flexibility is disrupted by early transformations which transform objc_autoreleaseRV => objc_autorelease if said instruction is no longer being used as part of an RV pair (generally due to inlining). Since we can not tell the difference in between an autorelease put into place by the frontend and one created through said ``strength reduction'' we can not perform these optimizations. The addition of this set gets around said issues by allowing us to differentiate in between said two cases. rdar://problem/13697741. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180222 91177308-0d34-0410-b5e6-96231b3b80d8		2013-04-24 22:18:18 +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	Move C++ code out of the C headers and into either C++ headers	2013-04-22 22:47:22 +00:00
Instrumentation	Move C++ code out of the C headers and into either C++ headers	2013-04-22 22:47:22 +00:00
IPO	Move C++ code out of the C headers and into either C++ headers	2013-04-22 22:47:22 +00:00
ObjCARC	[objc-arc] Added ImpreciseAutoreleaseSet to track autorelease calls that were once autoreleaseRV instructions.	2013-04-24 22:18:18 +00:00
Scalar	Move C++ code out of the C headers and into either C++ headers	2013-04-22 22:47:22 +00:00
Utils	Make sure the instruction right after an inlined function has a	2013-04-23 19:56:03 +00:00
Vectorize	LoopVectorizer: Change variable name Stride to ConsecutiveStride	2013-04-24 16:16:03 +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