diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp
index 2d60c35afb1..9f2c311601e 100644
--- a/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -2266,10 +2266,7 @@ bool SimplifyCFGOpt::SimplifyUnreachable(UnreachableInst *UI) {
                  !isa<LandingPadInst>(BBI)) {
         break;
       }
-      // Note that deleting LandingPad's here is in fact okay, although it
-      // involves a bit of subtle reasoning. If this inst is a LandingPad,
-      // all the predecessors of this block will be the unwind edges of Invokes,
-      // and we can therefore guarantee this block will be erased.
+      // FIXME: Handling of LandingPadInst (landingpad) is suspicious.
     }
 
     // Delete this instruction (any uses are guaranteed to be dead)