diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 7b51f453b4974..5b24ee302de5c 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -2556,7 +2556,7 @@ bool AArch64TargetLowering::targetShrinkDemandedConstant(
     return false;
 
   // Exit early if we demand all bits.
-  if (DemandedBits.popcount() == Size)
+  if (DemandedBits.isAllOnes())
     return false;
 
   unsigned NewOpc;