diff --git a/llvm/lib/TargetParser/X86TargetParser.cpp b/llvm/lib/TargetParser/X86TargetParser.cpp
index 0511ef4d42914..e3802380d2bee 100644
--- a/llvm/lib/TargetParser/X86TargetParser.cpp
+++ b/llvm/lib/TargetParser/X86TargetParser.cpp
@@ -500,7 +500,6 @@ constexpr FeatureBitset ImpliedFeaturesMOVDIRI = {};
 constexpr FeatureBitset ImpliedFeaturesPCONFIG = {};
 constexpr FeatureBitset ImpliedFeaturesPOPCNT = {};
 constexpr FeatureBitset ImpliedFeaturesPKU = {};
-constexpr FeatureBitset ImpliedFeaturesPREFETCHWT1 = {};
 constexpr FeatureBitset ImpliedFeaturesPRFCHW = {};
 constexpr FeatureBitset ImpliedFeaturesPTWRITE = {};
 constexpr FeatureBitset ImpliedFeaturesRDPID = {};