Index: llvm/lib/Target/AArch64/AArch64ISelLowering.h
===================================================================
--- llvm/lib/Target/AArch64/AArch64ISelLowering.h
+++ llvm/lib/Target/AArch64/AArch64ISelLowering.h
@@ -114,6 +114,8 @@
   FCVTZS_MERGE_PASSTHRU,
   SIGN_EXTEND_INREG_MERGE_PASSTHRU,
   ZERO_EXTEND_INREG_MERGE_PASSTHRU,
+  ABS_MERGE_PASSTHRU,
+  NEG_MERGE_PASSTHRU,
 
   SETCC_MERGE_ZERO,
 
@@ -810,6 +812,7 @@
                           SDValue ThisVal) const;
 
   SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const;
+  SDValue LowerABS(SDValue Op, SelectionDAG &DAG) const;
 
   SDValue LowerMGATHER(SDValue Op, SelectionDAG &DAG) const;
   SDValue LowerMSCATTER(SDValue Op, SelectionDAG &DAG) const;
Index: llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
===================================================================
--- llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -185,6 +185,8 @@
   case AArch64ISD::BITREVERSE_MERGE_PASSTHRU:
   case AArch64ISD::BSWAP_MERGE_PASSTHRU:
   case AArch64ISD::DUP_MERGE_PASSTHRU:
+  case AArch64ISD::ABS_MERGE_PASSTHRU:
+  case AArch64ISD::NEG_MERGE_PASSTHRU:
   case AArch64ISD::FNEG_MERGE_PASSTHRU:
   case AArch64ISD::SIGN_EXTEND_INREG_MERGE_PASSTHRU:
   case AArch64ISD::ZERO_EXTEND_INREG_MERGE_PASSTHRU:
@@ -1089,6 +1091,7 @@
       setOperationAction(ISD::SHL, VT, Custom);
       setOperationAction(ISD::SRL, VT, Custom);
       setOperationAction(ISD::SRA, VT, Custom);
+      setOperationAction(ISD::ABS, VT, Custom);
       setOperationAction(ISD::VECREDUCE_ADD, VT, Custom);
       setOperationAction(ISD::VECREDUCE_AND, VT, Custom);
       setOperationAction(ISD::VECREDUCE_OR, VT, Custom);
@@ -1728,6 +1731,8 @@
     MAKE_CASE(AArch64ISD::FSQRT_MERGE_PASSTHRU)
     MAKE_CASE(AArch64ISD::FRECPX_MERGE_PASSTHRU)
     MAKE_CASE(AArch64ISD::FABS_MERGE_PASSTHRU)
+    MAKE_CASE(AArch64ISD::ABS_MERGE_PASSTHRU)
+    MAKE_CASE(AArch64ISD::NEG_MERGE_PASSTHRU)
     MAKE_CASE(AArch64ISD::SETCC_MERGE_ZERO)
     MAKE_CASE(AArch64ISD::ADC)
     MAKE_CASE(AArch64ISD::SBC)
@@ -3631,6 +3636,12 @@
   case Intrinsic::aarch64_sve_fabs:
     return DAG.getNode(AArch64ISD::FABS_MERGE_PASSTHRU, dl, Op.getValueType(),
                        Op.getOperand(2), Op.getOperand(3), Op.getOperand(1));
+  case Intrinsic::aarch64_sve_abs:
+    return DAG.getNode(AArch64ISD::ABS_MERGE_PASSTHRU, dl, Op.getValueType(),
+                       Op.getOperand(2), Op.getOperand(3), Op.getOperand(1));
+  case Intrinsic::aarch64_sve_neg:
+    return DAG.getNode(AArch64ISD::NEG_MERGE_PASSTHRU, dl, Op.getValueType(),
+                       Op.getOperand(2), Op.getOperand(3), Op.getOperand(1));
   case Intrinsic::aarch64_sve_convert_to_svbool: {
     EVT OutVT = Op.getValueType();
     EVT InVT = Op.getOperand(1).getValueType();
@@ -4133,9 +4144,12 @@
 }
 
 // Generate SUBS and CSEL for integer abs.
-static SDValue LowerABS(SDValue Op, SelectionDAG &DAG) {
+SDValue AArch64TargetLowering::LowerABS(SDValue Op, SelectionDAG &DAG) const {
   MVT VT = Op.getSimpleValueType();
 
+  if (VT.isVector())
+    return LowerToPredicatedOp(Op, DAG, AArch64ISD::ABS_MERGE_PASSTHRU);
+
   SDLoc DL(Op);
   SDValue Neg = DAG.getNode(ISD::SUB, DL, VT, DAG.getConstant(0, DL, VT),
                             Op.getOperand(0));
Index: llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
===================================================================
--- llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
+++ llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
@@ -203,6 +203,8 @@
 // Predicated operations with the result of inactive lanes provided by the last operand.
 def AArch64fneg_mt   : SDNode<"AArch64ISD::FNEG_MERGE_PASSTHRU", SDT_AArch64Arith>;
 def AArch64fabs_mt   : SDNode<"AArch64ISD::FABS_MERGE_PASSTHRU", SDT_AArch64Arith>;
+def AArch64abs_mt   : SDNode<"AArch64ISD::ABS_MERGE_PASSTHRU", SDT_AArch64Arith>;
+def AArch64neg_mt   : SDNode<"AArch64ISD::NEG_MERGE_PASSTHRU", SDT_AArch64Arith>;
 def AArch64sxt_mt    : SDNode<"AArch64ISD::SIGN_EXTEND_INREG_MERGE_PASSTHRU", SDT_AArch64IntExtend>;
 def AArch64uxt_mt    : SDNode<"AArch64ISD::ZERO_EXTEND_INREG_MERGE_PASSTHRU", SDT_AArch64IntExtend>;
 def AArch64frintp_mt : SDNode<"AArch64ISD::FCEIL_MERGE_PASSTHRU", SDT_AArch64Arith>;
@@ -368,8 +370,8 @@
   defm UXTH_ZPmZ : sve_int_un_pred_arit_0_w<0b011, "uxth", AArch64uxt_mt>;
   defm SXTW_ZPmZ : sve_int_un_pred_arit_0_d<0b100, "sxtw", AArch64sxt_mt>;
   defm UXTW_ZPmZ : sve_int_un_pred_arit_0_d<0b101, "uxtw", AArch64uxt_mt>;
-  defm ABS_ZPmZ  : sve_int_un_pred_arit_0<  0b110, "abs",  int_aarch64_sve_abs>;
-  defm NEG_ZPmZ  : sve_int_un_pred_arit_0<  0b111, "neg",  int_aarch64_sve_neg>;
+  defm ABS_ZPmZ  : sve_int_un_pred_arit_0<  0b110, "abs",  AArch64abs_mt>;
+  defm NEG_ZPmZ  : sve_int_un_pred_arit_0<  0b111, "neg",  AArch64neg_mt>;
 
   defm CLS_ZPmZ  : sve_int_un_pred_arit_1<   0b000, "cls",  int_aarch64_sve_cls>;
   defm CLZ_ZPmZ  : sve_int_un_pred_arit_1<   0b001, "clz",  int_aarch64_sve_clz>;
Index: llvm/lib/Target/AArch64/SVEInstrFormats.td
===================================================================
--- llvm/lib/Target/AArch64/SVEInstrFormats.td
+++ llvm/lib/Target/AArch64/SVEInstrFormats.td
@@ -3773,10 +3773,10 @@
   def _S : sve_int_un_pred_arit<0b10, { opc, 0b0 }, asm, ZPR32>;
   def _D : sve_int_un_pred_arit<0b11, { opc, 0b0 }, asm, ZPR64>;
 
-  def : SVE_3_Op_Pat<nxv16i8, op, nxv16i8, nxv16i1, nxv16i8, !cast<Instruction>(NAME # _B)>;
-  def : SVE_3_Op_Pat<nxv8i16, op, nxv8i16, nxv8i1,  nxv8i16, !cast<Instruction>(NAME # _H)>;
-  def : SVE_3_Op_Pat<nxv4i32, op, nxv4i32, nxv4i1,  nxv4i32, !cast<Instruction>(NAME # _S)>;
-  def : SVE_3_Op_Pat<nxv2i64, op, nxv2i64, nxv2i1,  nxv2i64, !cast<Instruction>(NAME # _D)>;
+  def : SVE_1_Op_Passthru_Pat<nxv16i8, op, nxv16i1, nxv16i8, !cast<Instruction>(NAME # _B)>;
+  def : SVE_1_Op_Passthru_Pat<nxv8i16, op, nxv8i1,  nxv8i16, !cast<Instruction>(NAME # _H)>;
+  def : SVE_1_Op_Passthru_Pat<nxv4i32, op, nxv4i1,  nxv4i32, !cast<Instruction>(NAME # _S)>;
+  def : SVE_1_Op_Passthru_Pat<nxv2i64, op, nxv2i1,  nxv2i64, !cast<Instruction>(NAME # _D)>;
 }
 
 multiclass sve_int_un_pred_arit_0_h<bits<3> opc, string asm,
Index: llvm/test/CodeGen/AArch64/sve-int-arith.ll
===================================================================
--- llvm/test/CodeGen/AArch64/sve-int-arith.ll
+++ llvm/test/CodeGen/AArch64/sve-int-arith.ll
@@ -77,6 +77,81 @@
   ret <vscale x 16 x i8> %res
 }
 
+define <vscale x 16 x i8> @abs_nxv16i8(<vscale x 16 x i8> %a) {
+; CHECK-LABEL: abs_nxv16i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.b
+; CHECK-NEXT:    abs z0.b, p0/m, z0.b
+; CHECK-NEXT:    ret
+  %res = call <vscale x 16 x i8> @llvm.abs.nxv16i8(<vscale x 16 x i8> %a, i1 false)
+  ret <vscale x 16 x i8> %res
+}
+
+define <vscale x 8 x i16> @abs_nxv8i16(<vscale x 8 x i16> %a) {
+; CHECK-LABEL: abs_nxv8i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.h
+; CHECK-NEXT:    abs z0.h, p0/m, z0.h
+; CHECK-NEXT:    ret
+  %res = call <vscale x 8 x i16> @llvm.abs.nxv8i16(<vscale x 8 x i16> %a, i1 false)
+  ret <vscale x 8 x i16> %res
+}
+
+define <vscale x 4 x i32> @abs_nxv4i32(<vscale x 4 x i32> %a) {
+; CHECK-LABEL: abs_nxv4i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s
+; CHECK-NEXT:    abs z0.s, p0/m, z0.s
+; CHECK-NEXT:    ret
+  %res = call <vscale x 4 x i32> @llvm.abs.nxv4i32(<vscale x 4 x i32> %a, i1 false)
+  ret <vscale x 4 x i32> %res
+}
+
+define <vscale x 2 x i64> @abs_nxv2i64(<vscale x 2 x i64> %a) {
+; CHECK-LABEL: abs_nxv2i64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.d
+; CHECK-NEXT:    abs z0.d, p0/m, z0.d
+; CHECK-NEXT:    ret
+  %res = call <vscale x 2 x i64> @llvm.abs.nxv2i64(<vscale x 2 x i64> %a, i1 false)
+  ret <vscale x 2 x i64> %res
+}
+
+define <vscale x 4 x i16> @abs_nxv4i16(<vscale x 4 x i16> %a) {
+; CHECK-LABEL: abs_nxv4i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s
+; CHECK-NEXT:    sxth z0.s, p0/m, z0.s
+; CHECK-NEXT:    abs z0.s, p0/m, z0.s
+; CHECK-NEXT:    ret
+  %res = call <vscale x 4 x i16> @llvm.abs.nxv4i16(<vscale x 4 x i16> %a, i1 false)
+  ret <vscale x 4 x i16> %res
+}
+
+define <vscale x 32 x i8> @abs_nxv32i8(<vscale x 32 x i8> %a) {
+; CHECK-LABEL: abs_nxv32i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.b
+; CHECK-NEXT:    abs z0.b, p0/m, z0.b
+; CHECK-NEXT:    abs z1.b, p0/m, z1.b
+; CHECK-NEXT:    ret
+  %res = call <vscale x 32 x i8> @llvm.abs.nxv32i8(<vscale x 32 x i8> %a, i1 false)
+  ret <vscale x 32 x i8> %res
+}
+
+define <vscale x 8 x i64> @abs_nxv8i64(<vscale x 8 x i64> %a) {
+; CHECK-LABEL: abs_nxv8i64:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.d
+; CHECK-NEXT:    abs z0.d, p0/m, z0.d
+; CHECK-NEXT:    abs z1.d, p0/m, z1.d
+; CHECK-NEXT:    abs z2.d, p0/m, z2.d
+; CHECK-NEXT:    abs z3.d, p0/m, z3.d
+; CHECK-NEXT:    ret
+  %res = call <vscale x 8 x i64> @llvm.abs.nxv8i64(<vscale x 8 x i64> %a, i1 false)
+  ret <vscale x 8 x i64> %res
+}
+
 define <vscale x 2 x i64> @sqadd_i64(<vscale x 2 x i64> %a, <vscale x 2 x i64> %b) {
 ; CHECK-LABEL: sqadd_i64:
 ; CHECK:       // %bb.0:
@@ -281,3 +356,11 @@
 declare <vscale x 8 x i16> @llvm.usub.sat.nxv8i16(<vscale x 8 x i16>, <vscale x 8 x i16>)
 declare <vscale x 4 x i32> @llvm.usub.sat.nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>)
 declare <vscale x 2 x i64> @llvm.usub.sat.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i64>)
+
+declare <vscale x 32 x i8> @llvm.abs.nxv32i8(<vscale x 32 x i8>, i1)
+declare <vscale x 16 x i8> @llvm.abs.nxv16i8(<vscale x 16 x i8>, i1)
+declare <vscale x 4 x i16> @llvm.abs.nxv4i16(<vscale x 4 x i16>, i1)
+declare <vscale x 8 x i16> @llvm.abs.nxv8i16(<vscale x 8 x i16>, i1)
+declare <vscale x 4 x i32> @llvm.abs.nxv4i32(<vscale x 4 x i32>, i1)
+declare <vscale x 8 x i64> @llvm.abs.nxv8i64(<vscale x 8 x i64>, i1)
+declare <vscale x 2 x i64> @llvm.abs.nxv2i64(<vscale x 2 x i64>, i1)