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11 Commits

Author SHA1 Message Date
Michael Gottesman c1b648f6c0 [objc-arc] Fix assertion in EraseInstruction so that noop on null calls when passed null do not trigger the assert. 
The specific case of interest is when objc_retainBlock is passed null.

llvm-svn: 185885
 2013-07-08 23:30:23 +00:00
Michael Gottesman 3b8f877860 Add clang.arc.used to ModuleHasARC so ARC always runs if said call is present in a module. 
clang.arc.used is an interesting call for ARC since ObjCARCContract
needs to run to remove said intrinsic to avoid a linker error (since the
call does not exist).

llvm-svn: 178369
 2013-03-29 21:15:23 +00:00
Michael Gottesman 49f9885a2a Non optimizable objc_retainBlock calls are not forwarding. 
Since we handle optimizable objc_retainBlocks through strength reduction
in OptimizableIndividualCalls, we know that all code after that point
will only see non-optimizable objc_retainBlock calls. IsForwarding is
only called by functions after that point, so it is ok to just classify
objc_retainBlock as non-forwarding.

<rdar://problem/13249661>.

llvm-svn: 178285
 2013-03-28 20:11:30 +00:00
Michael Gottesman 65c2481d09 Changed isNullOrUndef => IsNullOrUndef and isNoopInstruction => IsNoopInstruction so that all helper functions are named similarly in ObjCARC.h. 
llvm-svn: 177855
 2013-03-25 09:27:43 +00:00
John McCall 20182ac0c7 Kill every call to @clang.arc.use in the ARC contract phase. 
llvm-svn: 177769
 2013-03-22 21:38:36 +00:00
Michael Gottesman 23a1ee5f5b Fixed some whitespace/80+ violations. Also added a space after a namespace declaration. 
llvm-svn: 173772
 2013-01-29 04:58:30 +00:00
Michael Gottesman 13a5f1a8b7 Juggled Debug.h from ObjCARC.h to only the including cpp files that 
actually have DEBUG statements. Also changed raw_ostream in said header
to be a forward declaration (removing an include).

llvm-svn: 173769
 2013-01-29 04:51:59 +00:00
Michael Gottesman 778138e960 Extracted ObjCARCContract from ObjCARCOpts into its own file. 
This also required adding 2x headers Dependency Analysis.h/Provenance Analysis.h
and a .cpp file DependencyAnalysis.cpp to unentangle the dependencies inbetween
ObjCARCContract and ObjCARCOpts.

llvm-svn: 173760
 2013-01-29 03:03:03 +00:00
Michael Gottesman 5ed40afe17 Created ObjCARCUtil.cpp for functions which in my humble opinion are too large to static inline and place in a header file such as ObjCARC.h. 
llvm-svn: 173666
 2013-01-28 06:39:31 +00:00
Michael Gottesman 294e7daaac Refactor ObjCARCAliasAnalysis into its own file. 
llvm-svn: 173662
 2013-01-28 05:51:54 +00:00
Michael Gottesman 08904e3ba4 Extracted pass ObjCARCExpand from ObjCARC.cpp => ObjCARCExpand.cpp. 
I also added the local header ObjCARC.h for common functions used by the
various passes.

llvm-svn: 173651
 2013-01-28 03:28:38 +00:00