diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index c1230c6adeeb..771cf8d661b2 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -17651,10 +17651,7 @@ PPCTargetLowering::shouldExpandAtomicRMWInIR(AtomicRMWInst *AI) const {
 
 TargetLowering::AtomicExpansionKind
 PPCTargetLowering::shouldExpandAtomicCmpXchgInIR(AtomicCmpXchgInst *AI) const {
-  unsigned Size = AI->getPointerOperand()
-                      ->getType()
-                      ->getPointerElementType()
-                      ->getPrimitiveSizeInBits();
+  unsigned Size = AI->getNewValOperand()->getType()->getPrimitiveSizeInBits();
   if (EnableQuadwordAtomics && Subtarget.hasQuadwordAtomics() && Size == 128)
     return AtomicExpansionKind::MaskedIntrinsic;
   return TargetLowering::shouldExpandAtomicCmpXchgInIR(AI);