diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 7df01883ef90a..cadef9a5fc23d 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -22231,8 +22231,10 @@ static SDValue LowerVSETCC(SDValue Op, const X86Subtarget &Subtarget,
   if (VT.is256BitVector() && !Subtarget.hasInt256())
     return splitIntVSETCC(Op, DAG);
 
-  if (VT == MVT::v32i16 || VT == MVT::v64i8)
+  if (VT == MVT::v32i16 || VT == MVT::v64i8) {
+    assert(!Subtarget.hasBWI() && "Unexpected VT with AVX512BW!");
     return splitIntVSETCC(Op, DAG);
+  }
 
   // If this is a SETNE against the signed minimum value, change it to SETGT.
   // If this is a SETNE against the signed maximum value, change it to SETLT.