[llvm] r179717 - [objc-arc] Added an option to arc-annotations for turning off CheckForCFGHazard.

[Michael Gottesman]

This is broken = /. Just running check-llvm before committing.
On Apr 17, 2013, at 1:48 PM, Michael Gottesman <mgottesman at apple.com> wrote:

> Author: mgottesman
> Date: Wed Apr 17 15:48:01 2013
> New Revision: 179717
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=179717&view=rev
> Log:
> [objc-arc] Added an option to arc-annotations for turning off CheckForCFGHazard.
> 
> Modified:
>    llvm/trunk/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
> 
> Modified: llvm/trunk/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/ObjCARC/ObjCARCOpts.cpp?rev=179717&r1=179716&r2=179717&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Transforms/ObjCARC/ObjCARCOpts.cpp (original)
> +++ llvm/trunk/lib/Transforms/ObjCARC/ObjCARCOpts.cpp Wed Apr 17 15:48:01 2013
> @@ -710,6 +710,9 @@ void BBState::MergeSucc(const BBState &O
> /// Enable/disable ARC sequence annotations.
> static cl::opt<bool>
> EnableARCAnnotations("enable-objc-arc-annotations", cl::init(false));
> +static cl::opt<bool>
> +EnableCheckForCFGHazards("enable-objc-arc-checkforcfghazards",
> +                         cl::init(true));
> 
> /// This function appends a unique ARCAnnotationProvenanceSourceMDKind id to an
> /// instruction so that we can track backwards when post processing via the llvm
> @@ -2170,6 +2173,9 @@ ObjCARCOpt::VisitTopDown(BasicBlock *BB,
>   // bottom of the basic block.
>   ANNOTATE_TOPDOWN_BBEND(MyStates, BB);
> 
> +#ifdef ARC_ANNOTATIONS
> +  if (EnableARCAnnotations && EnableCheckForCFGHazards)
> +#endif
>   CheckForCFGHazards(BB, BBStates, MyStates);
>   return NestingDetected;
> }
> 
> 
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