[X86] LowerStore - use is64BitVector() wrapper. NFCI.

Author: RKSimon

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -25325,10 +25325,10 @@ static SDValue LowerStore(SDValue Op, const X86Subtarget &Subtarget,
   }
 
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();
-  assert(StoreVT.isVector() && StoreVT.getSizeInBits() == 64 &&
-         "Unexpected VT");
+  assert(StoreVT.is64BitVector() && "Unexpected VT");
   assert(TLI.getTypeAction(*DAG.getContext(), StoreVT) ==
-             TargetLowering::TypeWidenVector && "Unexpected type action!");
+             TargetLowering::TypeWidenVector &&
+         "Unexpected type action!");
 
   EVT WideVT = TLI.getTypeToTransformTo(*DAG.getContext(), StoreVT);
   StoredVal = DAG.getNode(ISD::CONCAT_VECTORS, dl, WideVT, StoredVal,