Cast from SDValue directly instead of superfluous getNode(). NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354343 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 6c284ba..9944e23 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -38615,7 +38615,7 @@
       A = LHS.getOperand(0);
     if (!LHS.getOperand(1).isUndef())
       B = LHS.getOperand(1);
-    ArrayRef<int> Mask = cast<ShuffleVectorSDNode>(LHS.getNode())->getMask();
+    ArrayRef<int> Mask = cast<ShuffleVectorSDNode>(LHS)->getMask();
     llvm::copy(Mask, LMask.begin());
   } else {
     A = LHS;
@@ -38632,7 +38632,7 @@
       C = RHS.getOperand(0);
     if (!RHS.getOperand(1).isUndef())
       D = RHS.getOperand(1);
-    ArrayRef<int> Mask = cast<ShuffleVectorSDNode>(RHS.getNode())->getMask();
+    ArrayRef<int> Mask = cast<ShuffleVectorSDNode>(RHS)->getMask();
     llvm::copy(Mask, RMask.begin());
   } else {
     C = RHS;