[SVE] Lower fixed length UDIV to scalable

Pretty much just a copy of the SDIV patches (D86114 and D85982) with string replacement.

Differential Revision: https://reviews.llvm.org/D86316

Author: Cameron McInally

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

@@ -1009,6 +1009,14 @@ AArch64TargetLowering::AArch64TargetLowering(const TargetMachine &TM,
       setOperationAction(ISD::SMAX, MVT::v2i64, Custom);
       setOperationAction(ISD::SMIN, MVT::v1i64, Custom);
       setOperationAction(ISD::SMIN, MVT::v2i64, Custom);
+      setOperationAction(ISD::UDIV, MVT::v8i8, Custom);
+      setOperationAction(ISD::UDIV, MVT::v16i8, Custom);
+      setOperationAction(ISD::UDIV, MVT::v4i16, Custom);
+      setOperationAction(ISD::UDIV, MVT::v8i16, Custom);
+      setOperationAction(ISD::UDIV, MVT::v2i32, Custom);
+      setOperationAction(ISD::UDIV, MVT::v4i32, Custom);
+      setOperationAction(ISD::UDIV, MVT::v1i64, Custom);
+      setOperationAction(ISD::UDIV, MVT::v2i64, Custom);
       setOperationAction(ISD::UMAX, MVT::v1i64, Custom);
       setOperationAction(ISD::UMAX, MVT::v2i64, Custom);
       setOperationAction(ISD::UMIN, MVT::v1i64, Custom);
@@ -1135,6 +1143,7 @@ void AArch64TargetLowering::addTypeForFixedLengthSVE(MVT VT) {
   setOperationAction(ISD::STORE, VT, Custom);
   setOperationAction(ISD::SUB, VT, Custom);
   setOperationAction(ISD::TRUNCATE, VT, Custom);
+  setOperationAction(ISD::UDIV, VT, Custom);
   setOperationAction(ISD::UMAX, VT, Custom);
   setOperationAction(ISD::UMIN, VT, Custom);
   setOperationAction(ISD::XOR, VT, Custom);