Michael Gottesman e8c161a924 Fixed a bug where we were tail calling objc_autorelease causing an object to not be placed into an autorelease pool. ... The reason that this occurs is that tail calling objc_autorelease eventually tail calls -[NSObject autorelease] which supports fast autorelease. This can cause us to violate the semantic gaurantees of __autoreleasing variables that assignment to an __autoreleasing variables always yields an object that is placed into the innermost autorelease pool. The fix included in this patch works by: 1. In the peephole optimization function OptimizeIndividualFunctions, always remove tail call from objc_autorelease. 2. Whenever we convert to/from an objc_autorelease, set/unset the tail call keyword as appropriate. *NOTE* I also handled the case where objc_autorelease is converted in OptimizeReturns to an autoreleaseRV which still violates the ARC semantics. I will be removing that in a later patch and I wanted to make sure that the tree is in a consistent state vis-a-vis ARC always. Additionally some test cases are provided and all tests that have tail call marked objc_autorelease keywords have been modified so that tail call has been removed. *NOTE* One test fails due to a separate bug that I am going to commit soon. Thus I marked the check line TMP: instead of CHECK: so make check does not fail. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172287 91177308-0d34-0410-b5e6-96231b3b80d8		2013-01-12 01:25:15 +00:00
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Hello	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombine	Teach InstCombine to hoist FABS and FNEG through FPTRUNC instructions. The application of these operations commutes with the truncation, so we should prefer to do them in the smallest size we can, to save register space, use smaller constant pool entries, etc.	2013-01-10 22:06:52 +00:00
Instrumentation	[msan] Change va_start/va_copy shadow memset alignment to 8.	2013-01-10 22:36:33 +00:00
IPO	Fixed whitespace.	2013-01-11 23:08:52 +00:00
Scalar	Fixed a bug where we were tail calling objc_autorelease causing an object to not be placed into an autorelease pool.	2013-01-12 01:25:15 +00:00
Utils	Make sure we don't emit instructions before a landingpad instruction.	2013-01-08 10:51:32 +00:00
Vectorize	ARM Cost Model: We need to detect the max bitwidth of types in the loop in order to select the max vectorization factor.	2013-01-11 07:11:59 +00:00
CMakeLists.txt	Add a basic-block autovectorization pass.	2012-02-01 03:51:43 +00:00
LLVMBuild.txt	Add a basic-block autovectorization pass.	2012-02-01 03:51:43 +00:00
Makefile	Add a basic-block autovectorization pass.	2012-02-01 03:51:43 +00:00