diff options
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index f6d6b90b99..654125342a 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -1999,10 +1999,10 @@ static bool isOnlyReachableViaThisEdge(BasicBlock *Src, BasicBlock *Dst, // only reachable from Src, in practice it is pointless since at the time // GVN runs all such loops have preheaders, which means that Dst will have // been changed to have only one predecessor, namely Src. - pred_iterator PI = pred_begin(Dst), PE = pred_end(Dst); - assert(PI != PE && "No edge between these basic blocks!"); + BasicBlock *Pred = Dst->getSinglePredecessor(); + assert((!Pred || Pred == Src) && "No edge between these basic blocks!"); (void)Src; - return PE == ++PI; + return Pred != 0; } /// processInstruction - When calculating availability, handle an instruction |