[DAGCombiner] Use cast instead of an unchecked dyn_cast.

llvm-svn: 318450

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 0d397b7..7588c9f 100644 (file)
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -6631,7 +6631,7 @@ SDValue DAGCombiner::visitMGATHER(SDNode *N) {
   if (Level >= AfterLegalizeTypes)
     return SDValue();
 
-  MaskedGatherSDNode *MGT = dyn_cast<MaskedGatherSDNode>(N);
+  MaskedGatherSDNode *MGT = cast<MaskedGatherSDNode>(N);
   SDValue Mask = MGT->getMask();
   SDLoc DL(N);