diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -9474,7 +9474,7 @@
   const ConstantSDNode *CRHS = dyn_cast<ConstantSDNode>(N->getOperand(1));
   if (CRHS) {
     if (SDValue Split
-          = splitBinaryBitConstantOp(DCI, SDLoc(N), ISD::OR, LHS, CRHS))
+          = splitBinaryBitConstantOp(DCI, SDLoc(N), ISD::OR, N->getOperand(0), CRHS))
       return Split;
   }