Use SDValue::getConstantOperandVal() helper. NFCI.

llvm-svn: 285025

1 files changed, 2 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index aaced6cab6b..28c3f7a9e96 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2423,8 +2423,7 @@ void SelectionDAG::computeKnownBits(SDValue Op, APInt &KnownZero,
   }
   case ISD::EXTRACT_ELEMENT: {
     computeKnownBits(Op.getOperand(0), KnownZero, KnownOne, Depth+1);
-    const unsigned Index =
-      cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+    const unsigned Index = Op.getConstantOperandVal(1);
     const unsigned BitWidth = Op.getValueSizeInBits();
 
     // Remove low part of known bits mask
@@ -2716,8 +2715,7 @@ unsigned SelectionDAG::ComputeNumSignBits(SDValue Op, unsigned Depth) const {
 
     // Get reverse index (starting from 1), Op1 value indexes elements from
     // little end. Sign starts at big end.
-    const int rIndex = Items - 1 -
-      cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
+    const int rIndex = Items - 1 - Op.getConstantOperandVal(1);
 
     // If the sign portion ends in our element the subtraction gives correct
     // result. Otherwise it gives either negative or > bitwidth result