Michael Gottesman 0d92a3c600 [ObjCARC] Strength reduce objc_retainBlock -> objc_retain if the objc_retainBlock is optimizable. ... If an objc_retainBlock has the copy_on_escape metadata attached to it AND if the block pointer argument only escapes down the stack, we are allowed to strength reduce the objc_retainBlock to to an objc_retain and thus optimize it. Current there is logic in the ARC data flow analysis to handle this case which is complicated and involved making distinctions in between objc_retainBlock and objc_retain in certain places and considering them the same in others. This patch simplifies said code by: 1. Performing the strength reduction in the initial ARC peephole analysis (ObjCARCOpts::OptimizeIndividualCalls). 2. Changes the ARC dataflow analysis (which runs after the peephole analysis) to consider all objc_retainBlock calls to not be optimizable (since if the call was optimizable, we would have strength reduced it already). This patch leaves in the infrastructure in the ARC dataflow analysis to handle this case, which due to 2 will just be dead code. I am doing this on purpose to separate the removal of the old code from the testing of the new code. <rdar://problem/13249661>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178284 91177308-0d34-0410-b5e6-96231b3b80d8		2013-03-28 20:11:19 +00:00
..
Analysis	Fix SCEV forgetMemoizedResults should search and destroy backedge exprs.	2013-03-26 03:14:53 +00:00
Archive
Assembler	Correct invalid debug info metadata	2013-03-12 19:04:24 +00:00
Bindings/Ocaml	Use the attribute group reference instead of the attribute directly.	2013-02-20 07:48:23 +00:00
Bitcode	Unify clang/llvm attributes for asan/tsan/msan (LLVM part)	2013-02-26 06:58:09 +00:00
BugPoint
CodeGen	Hexagon: Enable SupportDebugInfomation and DwarfInSection flags.	2013-03-28 19:34:49 +00:00
DebugInfo	Revert "Adding DIImportedModules to DIScopes."	2013-03-28 02:44:59 +00:00
ExecutionEngine	Disable Execution Engine tests not supported by Hexagon.	2013-03-25 20:02:14 +00:00
Feature	Modify the LLVM assembly output so that it uses references to represent function attributes.	2013-02-20 07:21:42 +00:00
FileCheck	Canonicalize line endings to Linux style also when the --strict-whitespace flag is in use. This flag is supposed to affect horizontal whitespaces only.	2013-02-06 20:40:38 +00:00
Instrumentation	[tsan] make sure memset/memcpy/memmove are not inlined in tsan mode	2013-03-28 11:21:13 +00:00
Integer
JitListener	Add support for source and line information to IntelJITEventListener for object emitted by MCJIT.	2013-01-28 19:52:37 +00:00
Linker	Linker: correctly link in dbg.declare	2013-01-31 21:19:18 +00:00
MC	Fix issue with disassembler decoding CBZ/CBNZ immediates as negatives when the upper bit is set.	2013-03-28 19:22:28 +00:00
Object	[tools][llvm-readobj] print the name of the section when iterating the symbol table / dynamic symbol table	2013-03-25 16:06:51 +00:00
Other	Check isDiscardableIfUnused, rather than hasLocalLinkage, when bumping	2013-03-04 22:40:44 +00:00
Scripts	Set the +x bit on two batch scripts	2013-01-25 22:12:50 +00:00
TableGen	Allow TableGen DAG arguments to be just a name.	2013-03-24 19:36:51 +00:00
tools	PR10867: Analogue of r169441 for when using external 'sh'. And actually run the test!	2012-12-05 23:15:33 +00:00
Transforms	[ObjCARC] Strength reduce objc_retainBlock -> objc_retain if the objc_retainBlock is optimizable.	2013-03-28 20:11:19 +00:00
Unit	Disable ASan/MSan symbolization of reports in tests.	2013-03-27 13:11:12 +00:00
Verifier	[IR] Add 'Append' and 'AppendUnique' module flag behaviors.	2013-01-16 21:38:56 +00:00
YAMLParser
CMakeLists.txt	Add llvm-symbolizer as test dependency.	2013-03-13 09:35:18 +00:00
lit.cfg	Disable ASan/MSan symbolization of reports in tests.	2013-03-27 13:11:12 +00:00
lit.site.cfg.in	Add asan/msan to the list of available features in LIT test runner	2013-03-26 08:27:39 +00:00
Makefile	Reverted r176374. In some cases the lit.site.cfg file does not get generated in tools/clang/tools/extra.	2013-03-22 18:54:14 +00:00
Makefile.tests
TestRunner.sh