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-rw-r--r--lib/Transforms/ObjCARC/ObjCARCOpts.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Transforms/ObjCARC/ObjCARCOpts.cpp b/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
index cddf00bea77..bf1c93dc8db 100644
--- a/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
+++ b/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
@@ -710,6 +710,9 @@ void BBState::MergeSucc(const BBState &Other) {
/// 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;
}