[AArch64] Replace uaddlv intrinsic with uaddlv sdnode

[jaykang10]

Summary

We have introduced a new custom SDNode UADDLV on https://reviews.llvm.org/D159267.
Let's try to replace uaddlv intrinsic with it.

[dmgreen]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

8760

Here too!

[jaykang10]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

8760

You are right!
Let me update it too.

[jaykang10]

Replaced one more case.

[dmgreen]

Thanks. LGTM

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

SDValue AArch64TargetLowering::LowerCTPOP_PARITY(SDValue Op,
   //  ADDV    B0, V0.8B     // sum 8xbyte pop-counts
   //  UMOV    X0, V0.B[0]   // copy byte result back to integer reg
   if (VT == MVT::i32 || VT == MVT::i64) {
     if (VT == MVT::i32)
       Val = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, Val);
     Val = DAG.getNode(ISD::BITCAST, DL, MVT::v8i8, Val);
 
     SDValue CtPop = DAG.getNode(ISD::CTPOP, DL, MVT::v8i8, Val);
-    SDValue UaddLV = DAG.getNode(
-        ISD::INTRINSIC_WO_CHAIN, DL, MVT::i32,
-        DAG.getConstant(Intrinsic::aarch64_neon_uaddlv, DL, MVT::i32), CtPop);
+    SDValue UaddLV = DAG.getNode(AArch64ISD::UADDLV, DL, MVT::v4i32, CtPop);
+    UaddLV = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, MVT::i32, UaddLV,
+                         DAG.getConstant(0, DL, MVT::i64));
 
     if (IsParity)
       UaddLV = DAG.getNode(ISD::AND, DL, MVT::i32, UaddLV,
                            DAG.getConstant(1, DL, MVT::i32));
 
     if (VT == MVT::i64)
       UaddLV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, UaddLV);
     return UaddLV;
   } else if (VT == MVT::i128) {
     Val = DAG.getNode(ISD::BITCAST, DL, MVT::v16i8, Val);
 
     SDValue CtPop = DAG.getNode(ISD::CTPOP, DL, MVT::v16i8, Val);
     SDValue UaddLV = DAG.getNode(
         ISD::INTRINSIC_WO_CHAIN, DL, MVT::i32,
         DAG.getConstant(Intrinsic::aarch64_neon_uaddlv, DL, MVT::i32), CtPop);
 
     if (IsParity)
       UaddLV = DAG.getNode(ISD::AND, DL, MVT::i32, UaddLV,
                            DAG.getConstant(1, DL, MVT::i32));
 
     return DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i128, UaddLV);
   }