diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.h b/llvm/lib/Target/RISCV/RISCVISelLowering.h
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.h
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.h
@@ -445,6 +445,7 @@
   SDValue lowerFPVECREDUCE(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerINSERT_SUBVECTOR(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerEXTRACT_SUBVECTOR(SDValue Op, SelectionDAG &DAG) const;
+  SDValue lowerABS(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerFixedLengthVectorLoadToRVV(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerFixedLengthVectorStoreToRVV(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerFixedLengthVectorSetccToRVV(SDValue Op, SelectionDAG &DAG) const;
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -431,6 +431,9 @@
       setOperationAction(ISD::UMIN, VT, Legal);
       setOperationAction(ISD::UMAX, VT, Legal);
 
+      if (!Subtarget.is64Bit() && VT.getVectorElementType() == MVT::i64)
+        setOperationAction(ISD::ABS, VT, Custom);
+
       setOperationAction(ISD::ROTL, VT, Expand);
       setOperationAction(ISD::ROTR, VT, Expand);
 
@@ -575,6 +578,7 @@
         setOperationAction(ISD::SMAX, VT, Custom);
         setOperationAction(ISD::UMIN, VT, Custom);
         setOperationAction(ISD::UMAX, VT, Custom);
+        setOperationAction(ISD::ABS,  VT, Custom);
 
         setOperationAction(ISD::MULHS, VT, Custom);
         setOperationAction(ISD::MULHU, VT, Custom);
@@ -1591,6 +1595,8 @@
     return lowerToScalableOp(Op, DAG, RISCVISD::UMIN_VL);
   case ISD::UMAX:
     return lowerToScalableOp(Op, DAG, RISCVISD::UMAX_VL);
+  case ISD::ABS:
+    return lowerABS(Op, DAG);
   case ISD::VSELECT:
     return lowerFixedLengthVectorSelectToRVV(Op, DAG);
   }
@@ -2901,6 +2907,43 @@
   return lowerToScalableOp(Op, DAG, VecOpc, /*HasMask*/ true);
 }
 
+// Lower vector ABS to smax(X, sub(0, X)).
+SDValue RISCVTargetLowering::lowerABS(SDValue Op, SelectionDAG &DAG) const {
+  SDLoc DL(Op);
+  MVT VT = Op.getSimpleValueType();
+  SDValue X = Op.getOperand(0);
+
+  // For scalable vectors we just need to deal with i64 on RV32 since the
+  // default expansion crashes in getConstant.
+  if (VT.isScalableVector()) {
+    assert(!Subtarget.is64Bit() && VT.getVectorElementType() == MVT::i64 &&
+           "Unexpected custom lowering!");
+    SDValue SplatZero = DAG.getNode(RISCVISD::SPLAT_VECTOR_I64, DL, VT,
+                                    DAG.getConstant(0, DL, MVT::i32));
+    SDValue NegX = DAG.getNode(ISD::SUB, DL, VT, SplatZero, X);
+    return DAG.getNode(ISD::SMAX, DL, VT, X, NegX);
+  }
+
+  assert(VT.isFixedLengthVector() && "Unexpected type");
+
+  MVT ContainerVT =
+      RISCVTargetLowering::getContainerForFixedLengthVector(DAG, VT, Subtarget);
+  X = convertToScalableVector(ContainerVT, X, DAG, Subtarget);
+
+  SDValue Mask, VL;
+  std::tie(Mask, VL) = getDefaultVLOps(VT, ContainerVT, DL, DAG, Subtarget);
+
+  SDValue SplatZero =
+      DAG.getNode(RISCVISD::VMV_V_X_VL, DL, ContainerVT,
+                  DAG.getConstant(0, DL, Subtarget.getXLenVT()));
+  SDValue NegX =
+      DAG.getNode(RISCVISD::SUB_VL, DL, ContainerVT, SplatZero, X, Mask, VL);
+  SDValue Max =
+      DAG.getNode(RISCVISD::SMAX_VL, DL, ContainerVT, X, NegX, Mask, VL);
+
+  return convertFromScalableVector(VT, Max, DAG, Subtarget);
+}
+
 SDValue RISCVTargetLowering::lowerFixedLengthVectorSelectToRVV(
     SDValue Op, SelectionDAG &DAG) const {
   MVT VT = Op.getSimpleValueType();
diff --git a/llvm/test/CodeGen/RISCV/rvv/abs-sdnode.ll b/llvm/test/CodeGen/RISCV/rvv/abs-sdnode.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rvv/abs-sdnode.ll
@@ -0,0 +1,198 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+experimental-v -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=riscv64 -mattr=+experimental-v -verify-machineinstrs < %s | FileCheck %s
+
+declare <vscale x 1 x i16> @llvm.abs.nxv1i16(<vscale x 1 x i16>, i1)
+
+define <vscale x 1 x i16> @vabs_nxv1i16(<vscale x 1 x i16> %v) {
+; CHECK-LABEL: vabs_nxv1i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16,mf4,ta,mu
+; CHECK-NEXT:    vrsub.vi v25, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v25
+; CHECK-NEXT:    ret
+  %r = call <vscale x 1 x i16> @llvm.abs.nxv1i16(<vscale x 1 x i16> %v, i1 false)
+  ret <vscale x 1 x i16> %r
+}
+
+declare <vscale x 2 x i16> @llvm.abs.nxv2i16(<vscale x 2 x i16>, i1)
+
+define <vscale x 2 x i16> @vabs_nxv2i16(<vscale x 2 x i16> %v) {
+; CHECK-LABEL: vabs_nxv2i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16,mf2,ta,mu
+; CHECK-NEXT:    vrsub.vi v25, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v25
+; CHECK-NEXT:    ret
+  %r = call <vscale x 2 x i16> @llvm.abs.nxv2i16(<vscale x 2 x i16> %v, i1 false)
+  ret <vscale x 2 x i16> %r
+}
+
+declare <vscale x 4 x i16> @llvm.abs.nxv4i16(<vscale x 4 x i16>, i1)
+
+define <vscale x 4 x i16> @vabs_nxv4i16(<vscale x 4 x i16> %v) {
+; CHECK-LABEL: vabs_nxv4i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16,m1,ta,mu
+; CHECK-NEXT:    vrsub.vi v25, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v25
+; CHECK-NEXT:    ret
+  %r = call <vscale x 4 x i16> @llvm.abs.nxv4i16(<vscale x 4 x i16> %v, i1 false)
+  ret <vscale x 4 x i16> %r
+}
+
+declare <vscale x 8 x i16> @llvm.abs.nxv8i16(<vscale x 8 x i16>, i1)
+
+define <vscale x 8 x i16> @vabs_nxv8i16(<vscale x 8 x i16> %v) {
+; CHECK-LABEL: vabs_nxv8i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16,m2,ta,mu
+; CHECK-NEXT:    vrsub.vi v26, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v26
+; CHECK-NEXT:    ret
+  %r = call <vscale x 8 x i16> @llvm.abs.nxv8i16(<vscale x 8 x i16> %v, i1 false)
+  ret <vscale x 8 x i16> %r
+}
+
+declare <vscale x 16 x i16> @llvm.abs.nxv16i16(<vscale x 16 x i16>, i1)
+
+define <vscale x 16 x i16> @vabs_nxv16i16(<vscale x 16 x i16> %v) {
+; CHECK-LABEL: vabs_nxv16i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16,m4,ta,mu
+; CHECK-NEXT:    vrsub.vi v28, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v28
+; CHECK-NEXT:    ret
+  %r = call <vscale x 16 x i16> @llvm.abs.nxv16i16(<vscale x 16 x i16> %v, i1 false)
+  ret <vscale x 16 x i16> %r
+}
+
+declare <vscale x 32 x i16> @llvm.abs.nxv32i16(<vscale x 32 x i16>, i1)
+
+define <vscale x 32 x i16> @vabs_nxv32i16(<vscale x 32 x i16> %v) {
+; CHECK-LABEL: vabs_nxv32i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16,m8,ta,mu
+; CHECK-NEXT:    vrsub.vi v16, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v16
+; CHECK-NEXT:    ret
+  %r = call <vscale x 32 x i16> @llvm.abs.nxv32i16(<vscale x 32 x i16> %v, i1 false)
+  ret <vscale x 32 x i16> %r
+}
+
+declare <vscale x 1 x i32> @llvm.abs.nxv1i32(<vscale x 1 x i32>, i1)
+
+define <vscale x 1 x i32> @vabs_nxv1i32(<vscale x 1 x i32> %v) {
+; CHECK-LABEL: vabs_nxv1i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e32,mf2,ta,mu
+; CHECK-NEXT:    vrsub.vi v25, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v25
+; CHECK-NEXT:    ret
+  %r = call <vscale x 1 x i32> @llvm.abs.nxv1i32(<vscale x 1 x i32> %v, i1 false)
+  ret <vscale x 1 x i32> %r
+}
+
+declare <vscale x 2 x i32> @llvm.abs.nxv2i32(<vscale x 2 x i32>, i1)
+
+define <vscale x 2 x i32> @vabs_nxv2i32(<vscale x 2 x i32> %v) {
+; CHECK-LABEL: vabs_nxv2i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e32,m1,ta,mu
+; CHECK-NEXT:    vrsub.vi v25, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v25
+; CHECK-NEXT:    ret
+  %r = call <vscale x 2 x i32> @llvm.abs.nxv2i32(<vscale x 2 x i32> %v, i1 false)
+  ret <vscale x 2 x i32> %r
+}
+
+declare <vscale x 4 x i32> @llvm.abs.nxv4i32(<vscale x 4 x i32>, i1)
+
+define <vscale x 4 x i32> @vabs_nxv4i32(<vscale x 4 x i32> %v) {
+; CHECK-LABEL: vabs_nxv4i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e32,m2,ta,mu
+; CHECK-NEXT:    vrsub.vi v26, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v26
+; CHECK-NEXT:    ret
+  %r = call <vscale x 4 x i32> @llvm.abs.nxv4i32(<vscale x 4 x i32> %v, i1 false)
+  ret <vscale x 4 x i32> %r
+}
+
+declare <vscale x 8 x i32> @llvm.abs.nxv8i32(<vscale x 8 x i32>, i1)
+
+define <vscale x 8 x i32> @vabs_nxv8i32(<vscale x 8 x i32> %v) {
+; CHECK-LABEL: vabs_nxv8i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e32,m4,ta,mu
+; CHECK-NEXT:    vrsub.vi v28, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v28
+; CHECK-NEXT:    ret
+  %r = call <vscale x 8 x i32> @llvm.abs.nxv8i32(<vscale x 8 x i32> %v, i1 false)
+  ret <vscale x 8 x i32> %r
+}
+
+declare <vscale x 16 x i32> @llvm.abs.nxv16i32(<vscale x 16 x i32>, i1)
+
+define <vscale x 16 x i32> @vabs_nxv16i32(<vscale x 16 x i32> %v) {
+; CHECK-LABEL: vabs_nxv16i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e32,m8,ta,mu
+; CHECK-NEXT:    vrsub.vi v16, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v16
+; CHECK-NEXT:    ret
+  %r = call <vscale x 16 x i32> @llvm.abs.nxv16i32(<vscale x 16 x i32> %v, i1 false)
+  ret <vscale x 16 x i32> %r
+}
+
+declare <vscale x 1 x i64> @llvm.abs.nxv1i64(<vscale x 1 x i64>, i1)
+
+define <vscale x 1 x i64> @vabs_nxv1i64(<vscale x 1 x i64> %v) {
+; CHECK-LABEL: vabs_nxv1i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64,m1,ta,mu
+; CHECK-NEXT:    vrsub.vi v25, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v25
+; CHECK-NEXT:    ret
+  %r = call <vscale x 1 x i64> @llvm.abs.nxv1i64(<vscale x 1 x i64> %v, i1 false)
+  ret <vscale x 1 x i64> %r
+}
+
+declare <vscale x 2 x i64> @llvm.abs.nxv2i64(<vscale x 2 x i64>, i1)
+
+define <vscale x 2 x i64> @vabs_nxv2i64(<vscale x 2 x i64> %v) {
+; CHECK-LABEL: vabs_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64,m2,ta,mu
+; CHECK-NEXT:    vrsub.vi v26, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v26
+; CHECK-NEXT:    ret
+  %r = call <vscale x 2 x i64> @llvm.abs.nxv2i64(<vscale x 2 x i64> %v, i1 false)
+  ret <vscale x 2 x i64> %r
+}
+
+declare <vscale x 4 x i64> @llvm.abs.nxv4i64(<vscale x 4 x i64>, i1)
+
+define <vscale x 4 x i64> @vabs_nxv4i64(<vscale x 4 x i64> %v) {
+; CHECK-LABEL: vabs_nxv4i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64,m4,ta,mu
+; CHECK-NEXT:    vrsub.vi v28, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v28
+; CHECK-NEXT:    ret
+  %r = call <vscale x 4 x i64> @llvm.abs.nxv4i64(<vscale x 4 x i64> %v, i1 false)
+  ret <vscale x 4 x i64> %r
+}
+
+declare <vscale x 8 x i64> @llvm.abs.nxv8i64(<vscale x 8 x i64>, i1)
+
+define <vscale x 8 x i64> @vabs_nxv8i64(<vscale x 8 x i64> %v) {
+; CHECK-LABEL: vabs_nxv8i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64,m8,ta,mu
+; CHECK-NEXT:    vrsub.vi v16, v8, 0
+; CHECK-NEXT:    vmax.vv v8, v8, v16
+; CHECK-NEXT:    ret
+  %r = call <vscale x 8 x i64> @llvm.abs.nxv8i64(<vscale x 8 x i64> %v, i1 false)
+  ret <vscale x 8 x i64> %r
+}
diff --git a/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-abs.ll b/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-abs.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-abs.ll
@@ -0,0 +1,254 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+experimental-v -verify-machineinstrs -riscv-v-vector-bits-min=128 -riscv-v-fixed-length-vector-lmul-max=2 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,LMULMAX2
+; RUN: llc -mtriple=riscv64 -mattr=+experimental-v -verify-machineinstrs -riscv-v-vector-bits-min=128 -riscv-v-fixed-length-vector-lmul-max=2 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,LMULMAX2
+; RUN: llc -mtriple=riscv32 -mattr=+experimental-v -verify-machineinstrs -riscv-v-vector-bits-min=128 -riscv-v-fixed-length-vector-lmul-max=1 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,LMULMAX1-RV32
+; RUN: llc -mtriple=riscv64 -mattr=+experimental-v -verify-machineinstrs -riscv-v-vector-bits-min=128 -riscv-v-fixed-length-vector-lmul-max=1 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,LMULMAX1-RV64
+
+define void @abs_v16i8(<16 x i8>* %x, <16 x i8>* %y) {
+; CHECK-LABEL: abs_v16i8:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli a1, 16, e8,m1,ta,mu
+; CHECK-NEXT:    vle8.v v25, (a0)
+; CHECK-NEXT:    vrsub.vi v26, v25, 0
+; CHECK-NEXT:    vmax.vv v25, v25, v26
+; CHECK-NEXT:    vse8.v v25, (a0)
+; CHECK-NEXT:    ret
+  %a = load <16 x i8>, <16 x i8>* %x
+  %b = load <16 x i8>, <16 x i8>* %y
+  %c = call <16 x i8> @llvm.abs.v16i8(<16 x i8> %a, i1 false)
+  store <16 x i8> %c, <16 x i8>* %x
+  ret void
+}
+declare <16 x i8> @llvm.abs.v16i8(<16 x i8>, i1)
+
+define void @abs_v8i16(<8 x i16>* %x, <8 x i16>* %y) {
+; CHECK-LABEL: abs_v8i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli a1, 8, e16,m1,ta,mu
+; CHECK-NEXT:    vle16.v v25, (a0)
+; CHECK-NEXT:    vrsub.vi v26, v25, 0
+; CHECK-NEXT:    vmax.vv v25, v25, v26
+; CHECK-NEXT:    vse16.v v25, (a0)
+; CHECK-NEXT:    ret
+  %a = load <8 x i16>, <8 x i16>* %x
+  %b = load <8 x i16>, <8 x i16>* %y
+  %c = call <8 x i16> @llvm.abs.v8i16(<8 x i16> %a, i1 false)
+  store <8 x i16> %c, <8 x i16>* %x
+  ret void
+}
+declare <8 x i16> @llvm.abs.v8i16(<8 x i16>, i1)
+
+define void @abs_v4i32(<4 x i32>* %x, <4 x i32>* %y) {
+; CHECK-LABEL: abs_v4i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli a1, 4, e32,m1,ta,mu
+; CHECK-NEXT:    vle32.v v25, (a0)
+; CHECK-NEXT:    vrsub.vi v26, v25, 0
+; CHECK-NEXT:    vmax.vv v25, v25, v26
+; CHECK-NEXT:    vse32.v v25, (a0)
+; CHECK-NEXT:    ret
+  %a = load <4 x i32>, <4 x i32>* %x
+  %b = load <4 x i32>, <4 x i32>* %y
+  %c = call <4 x i32> @llvm.abs.v4i32(<4 x i32> %a, i1 false)
+  store <4 x i32> %c, <4 x i32>* %x
+  ret void
+}
+declare <4 x i32> @llvm.abs.v4i32(<4 x i32>, i1)
+
+define void @abs_v2i64(<2 x i64>* %x, <2 x i64>* %y) {
+; CHECK-LABEL: abs_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli a1, 2, e64,m1,ta,mu
+; CHECK-NEXT:    vle64.v v25, (a0)
+; CHECK-NEXT:    vrsub.vi v26, v25, 0
+; CHECK-NEXT:    vmax.vv v25, v25, v26
+; CHECK-NEXT:    vse64.v v25, (a0)
+; CHECK-NEXT:    ret
+  %a = load <2 x i64>, <2 x i64>* %x
+  %b = load <2 x i64>, <2 x i64>* %y
+  %c = call <2 x i64> @llvm.abs.v2i64(<2 x i64> %a, i1 false)
+  store <2 x i64> %c, <2 x i64>* %x
+  ret void
+}
+declare <2 x i64> @llvm.abs.v2i64(<2 x i64>, i1)
+
+define void @abs_v32i8(<32 x i8>* %x, <32 x i8>* %y) {
+; LMULMAX2-LABEL: abs_v32i8:
+; LMULMAX2:       # %bb.0:
+; LMULMAX2-NEXT:    addi a1, zero, 32
+; LMULMAX2-NEXT:    vsetvli a1, a1, e8,m2,ta,mu
+; LMULMAX2-NEXT:    vle8.v v26, (a0)
+; LMULMAX2-NEXT:    vrsub.vi v28, v26, 0
+; LMULMAX2-NEXT:    vmax.vv v26, v26, v28
+; LMULMAX2-NEXT:    vse8.v v26, (a0)
+; LMULMAX2-NEXT:    ret
+;
+; LMULMAX1-RV32-LABEL: abs_v32i8:
+; LMULMAX1-RV32:       # %bb.0:
+; LMULMAX1-RV32-NEXT:    vsetivli a1, 16, e8,m1,ta,mu
+; LMULMAX1-RV32-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV32-NEXT:    vle8.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    vle8.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV32-NEXT:    vse8.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vse8.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    ret
+;
+; LMULMAX1-RV64-LABEL: abs_v32i8:
+; LMULMAX1-RV64:       # %bb.0:
+; LMULMAX1-RV64-NEXT:    vsetivli a1, 16, e8,m1,ta,mu
+; LMULMAX1-RV64-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV64-NEXT:    vle8.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    vle8.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV64-NEXT:    vse8.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vse8.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    ret
+  %a = load <32 x i8>, <32 x i8>* %x
+  %b = load <32 x i8>, <32 x i8>* %y
+  %c = call <32 x i8> @llvm.abs.v32i8(<32 x i8> %a, i1 false)
+  store <32 x i8> %c, <32 x i8>* %x
+  ret void
+}
+declare <32 x i8> @llvm.abs.v32i8(<32 x i8>, i1)
+
+define void @abs_v16i16(<16 x i16>* %x, <16 x i16>* %y) {
+; LMULMAX2-LABEL: abs_v16i16:
+; LMULMAX2:       # %bb.0:
+; LMULMAX2-NEXT:    vsetivli a1, 16, e16,m2,ta,mu
+; LMULMAX2-NEXT:    vle16.v v26, (a0)
+; LMULMAX2-NEXT:    vrsub.vi v28, v26, 0
+; LMULMAX2-NEXT:    vmax.vv v26, v26, v28
+; LMULMAX2-NEXT:    vse16.v v26, (a0)
+; LMULMAX2-NEXT:    ret
+;
+; LMULMAX1-RV32-LABEL: abs_v16i16:
+; LMULMAX1-RV32:       # %bb.0:
+; LMULMAX1-RV32-NEXT:    vsetivli a1, 8, e16,m1,ta,mu
+; LMULMAX1-RV32-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV32-NEXT:    vle16.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    vle16.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV32-NEXT:    vse16.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vse16.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    ret
+;
+; LMULMAX1-RV64-LABEL: abs_v16i16:
+; LMULMAX1-RV64:       # %bb.0:
+; LMULMAX1-RV64-NEXT:    vsetivli a1, 8, e16,m1,ta,mu
+; LMULMAX1-RV64-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV64-NEXT:    vle16.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    vle16.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV64-NEXT:    vse16.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vse16.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    ret
+  %a = load <16 x i16>, <16 x i16>* %x
+  %b = load <16 x i16>, <16 x i16>* %y
+  %c = call <16 x i16> @llvm.abs.v16i16(<16 x i16> %a, i1 false)
+  store <16 x i16> %c, <16 x i16>* %x
+  ret void
+}
+declare <16 x i16> @llvm.abs.v16i16(<16 x i16>, i1)
+
+define void @abs_v8i32(<8 x i32>* %x, <8 x i32>* %y) {
+; LMULMAX2-LABEL: abs_v8i32:
+; LMULMAX2:       # %bb.0:
+; LMULMAX2-NEXT:    vsetivli a1, 8, e32,m2,ta,mu
+; LMULMAX2-NEXT:    vle32.v v26, (a0)
+; LMULMAX2-NEXT:    vrsub.vi v28, v26, 0
+; LMULMAX2-NEXT:    vmax.vv v26, v26, v28
+; LMULMAX2-NEXT:    vse32.v v26, (a0)
+; LMULMAX2-NEXT:    ret
+;
+; LMULMAX1-RV32-LABEL: abs_v8i32:
+; LMULMAX1-RV32:       # %bb.0:
+; LMULMAX1-RV32-NEXT:    vsetivli a1, 4, e32,m1,ta,mu
+; LMULMAX1-RV32-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV32-NEXT:    vle32.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    vle32.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV32-NEXT:    vse32.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vse32.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    ret
+;
+; LMULMAX1-RV64-LABEL: abs_v8i32:
+; LMULMAX1-RV64:       # %bb.0:
+; LMULMAX1-RV64-NEXT:    vsetivli a1, 4, e32,m1,ta,mu
+; LMULMAX1-RV64-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV64-NEXT:    vle32.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    vle32.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV64-NEXT:    vse32.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vse32.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    ret
+  %a = load <8 x i32>, <8 x i32>* %x
+  %b = load <8 x i32>, <8 x i32>* %y
+  %c = call <8 x i32> @llvm.abs.v8i32(<8 x i32> %a, i1 false)
+  store <8 x i32> %c, <8 x i32>* %x
+  ret void
+}
+declare <8 x i32> @llvm.abs.v8i32(<8 x i32>, i1)
+
+define void @abs_v4i64(<4 x i64>* %x, <4 x i64>* %y) {
+; LMULMAX2-LABEL: abs_v4i64:
+; LMULMAX2:       # %bb.0:
+; LMULMAX2-NEXT:    vsetivli a1, 4, e64,m2,ta,mu
+; LMULMAX2-NEXT:    vle64.v v26, (a0)
+; LMULMAX2-NEXT:    vrsub.vi v28, v26, 0
+; LMULMAX2-NEXT:    vmax.vv v26, v26, v28
+; LMULMAX2-NEXT:    vse64.v v26, (a0)
+; LMULMAX2-NEXT:    ret
+;
+; LMULMAX1-RV32-LABEL: abs_v4i64:
+; LMULMAX1-RV32:       # %bb.0:
+; LMULMAX1-RV32-NEXT:    vsetivli a1, 2, e64,m1,ta,mu
+; LMULMAX1-RV32-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV32-NEXT:    vle64.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    vle64.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV32-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV32-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV32-NEXT:    vse64.v v26, (a0)
+; LMULMAX1-RV32-NEXT:    vse64.v v25, (a1)
+; LMULMAX1-RV32-NEXT:    ret
+;
+; LMULMAX1-RV64-LABEL: abs_v4i64:
+; LMULMAX1-RV64:       # %bb.0:
+; LMULMAX1-RV64-NEXT:    vsetivli a1, 2, e64,m1,ta,mu
+; LMULMAX1-RV64-NEXT:    addi a1, a0, 16
+; LMULMAX1-RV64-NEXT:    vle64.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    vle64.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v25, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v25, v25, v27
+; LMULMAX1-RV64-NEXT:    vrsub.vi v27, v26, 0
+; LMULMAX1-RV64-NEXT:    vmax.vv v26, v26, v27
+; LMULMAX1-RV64-NEXT:    vse64.v v26, (a0)
+; LMULMAX1-RV64-NEXT:    vse64.v v25, (a1)
+; LMULMAX1-RV64-NEXT:    ret
+  %a = load <4 x i64>, <4 x i64>* %x
+  %b = load <4 x i64>, <4 x i64>* %y
+  %c = call <4 x i64> @llvm.abs.v4i64(<4 x i64> %a, i1 false)
+  store <4 x i64> %c, <4 x i64>* %x
+  ret void
+}
+declare <4 x i64> @llvm.abs.v4i64(<4 x i64>, i1)