[AArch64][SVE] Fold target specific ext/trunc nodes into loads/stores

[bsmith]

Summary

Due to the way fixed length SVE lowering works, we sometimes introduce
ext/trunc nodes very late, these nodes then immediately get converted
into target specific nodes (UUNPKLO/UZP1) before they get a chance to be
folded into a load/store.

This patch introduces target specific dag combines for these nodes so that
we can still create extending loads/truncating stores out of them.

[paulwalker-arm]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

15333–15335

Is this universally true across all predicate patterns? Given my comment below I'm wondering if you'll eventually just create fresh PTRUEs rather than have to answer this question.

17159–17161

This function also accepts AArch64ISD::UUNPKHI so you'll need to protect against that.

17176

I think you've confused extending with explanding? I don't think this is something we support for AArch64, which explains why most code in this file just omits this parameter.

17540–17546

Not quite sure but this feels too easy. What if you actually want to store the result of an UZP1?

I think the current value of the predicate plays a key role here. The case you're trying to handle is when we're storing N elements where all those elements come from one side of an UZIP1.

Not sure if the loads have the same issue but I figure it's safest for the two to have symmetry.

[bsmith]

• Ensure we don't try and combine a UUNPKHI.
• Remove incorrect IsExapanding argument to getMaskedLoad.
• Explicitly check for and create new PTRUE for mask.
• Properly check that the PTRUE we are creating can be represented at the current VL.
• Remove extract_subvector ptrue combine as it is no longer needed.

[paulwalker-arm]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

17172

Is this not just VT? It's not related to any input from what I can see, or have a misunderstood the naming?

17176

getNumElementsFromSVEPredPattern can return 0 for cases other than all. Perhaps

unsigned NumElts = getNumElementsFromSVEPredPattern(PgPattern);
if (NumElts && NumElts * InVT.getVectorElementType().getSizeInBits() <= MinSVESize)

17183

Is this correct? Given the new load has a different result type, I'd expect PassThru to also change. Speaking of which, I think the combine is only equivalent when the original PassThru is zero or undef and the new one is forced to zero?

[bsmith]

• Rename InVT to VT for clarity.
• Check for zero return from getNumElementsFromSVEPredPattern.
• Bail out if passthru is not zero or undef.
• Force passthru to be zero so as to not introduce extra undef bits.

[bsmith]

• Remove redundant check against all predicate pattern

[bsmith]

• Tighten up checks on bitcast in store case to ensure we have the correct types.
• Remove redundant uzp1 operand check.
• Bail upon encountering non-integer types.

[paulwalker-arm]

I've added a suggested improvement if you agree, but otherwise looks good.

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

17163

This is not necessary because AArch64ISD::UUNPKLO only supports integer types.

17542–17549

Whilst this works, you don't need to restrict the combine like this. Here you're checking the stored elements all come from UZP1's first operand. You could do this using:

ValueVT.isInteger() && ValueVT != MVT::nxv2i64) {
EVT HalfVT = ValueVT.getHalfNumVectorElementsVT(*DAG.getContext());
EVT InVT = HalfVT.widenIntegerVectorElementType(*DAG.getContext());

followed by your current NumElts check. Then just before the getMaskedStore() create a fresh bitcast (e.g. Value = bitcast(Value.getOperand(0) to InVT). This means you don't really care what UZP1's first operand is and you might catch more cases.

[bsmith]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

17542–17549

I think for now this change should be left to a separate ticket, if we ever encounter this causing an issue. The logic around this is already quite confusing and I worry a change like that would make this section of code very confusing, whilst possibly not benefiting anything realistic.

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

#undef LCALLNAME5
 
   setTargetDAGCombine({ISD::ANY_EXTEND, ISD::ZERO_EXTEND, ISD::SIGN_EXTEND,
                        ISD::VECTOR_SPLICE, ISD::SIGN_EXTEND_INREG,
                        ISD::CONCAT_VECTORS, ISD::EXTRACT_SUBVECTOR,
                        ISD::INSERT_SUBVECTOR, ISD::STORE});
   if (Subtarget->supportsAddressTopByteIgnored())
     setTargetDAGCombine(ISD::LOAD);
 
+  setTargetDAGCombine(ISD::MSTORE);
+
   setTargetDAGCombine(ISD::MUL);
 
   setTargetDAGCombine({ISD::SELECT, ISD::VSELECT});
 
   setTargetDAGCombine({ISD::INTRINSIC_VOID, ISD::INTRINSIC_W_CHAIN,
                        ISD::INSERT_VECTOR_ELT, ISD::EXTRACT_VECTOR_ELT,
                        ISD::VECREDUCE_ADD, ISD::STEP_VECTOR});
 
performExtractSubvectorCombine(SDNode *N, TargetLowering::DAGCombinerInfo &DCI,
   // NOTE: This combine exists in DAGCombiner, but that version's legality check
   // blocks this combine because the non-const case requires custom lowering.
   //
   // ty1 extract_vector(ty2 splat(const))) -> ty1 splat(const)
   if (V.getOpcode() == ISD::SPLAT_VECTOR)
     if (isa<ConstantSDNode>(V.getOperand(0)))
       return DAG.getNode(ISD::SPLAT_VECTOR, SDLoc(N), VT, V.getOperand(0));
 
   return SDValue();
 }
 
 static SDValue
 performInsertSubvectorCombine(SDNode *N, TargetLowering::DAGCombinerInfo &DCI,
                               SelectionDAG &DAG) {
   SDLoc DL(N);
   SDValue Vec = N->getOperand(0);
   SDValue SubVec = N->getOperand(1);
   uint64_t IdxVal = N->getConstantOperandVal(2);
   EVT VecVT = Vec.getValueType();
static SDValue performSpliceCombine(SDNode *N, SelectionDAG &DAG) {
 
   // splice(pg, op1, undef) -> op1
   if (N->getOperand(2).isUndef())
     return N->getOperand(1);
 
   return SDValue();
 }
 
-static SDValue performUnpackCombine(SDNode *N, SelectionDAG &DAG) {
+static SDValue performUnpackCombine(SDNode *N, SelectionDAG &DAG,
+                                    const AArch64Subtarget *Subtarget) {
   assert((N->getOpcode() == AArch64ISD::UUNPKHI ||
           N->getOpcode() == AArch64ISD::UUNPKLO) &&
          "Unexpected Opcode!");
 
   // uunpklo/hi undef -> undef
   if (N->getOperand(0).isUndef())
     return DAG.getUNDEF(N->getValueType(0));
 
+  // If this is a masked load followed by an UUNPKLO, fold this into a masked
+  // extending load.  We can do this even if this is already a masked
+  // {z,}extload.
+  if (N->getOperand(0).getOpcode() == ISD::MLOAD &&
+      N->getOpcode() == AArch64ISD::UUNPKLO) {
+    MaskedLoadSDNode *MLD = cast<MaskedLoadSDNode>(N->getOperand(0));
+    SDValue Mask = MLD->getMask();
+    SDLoc DL(N);
+
+    if (MLD->isUnindexed() && MLD->getExtensionType() != ISD::SEXTLOAD &&
+        SDValue(MLD, 0).hasOneUse() && Mask->getOpcode() == AArch64ISD::PTRUE &&
+        (MLD->getPassThru()->isUndef() ||
+         isZerosVector(MLD->getPassThru().getNode()))) {
+      unsigned MinSVESize = Subtarget->getMinSVEVectorSizeInBits();
+      unsigned PgPattern = Mask->getConstantOperandVal(0);
+      EVT VT = N->getValueType(0);
+
+      // Ensure we can double the size of the predicate pattern
+      unsigned NumElts = getNumElementsFromSVEPredPattern(PgPattern);
+      if (NumElts &&
+          NumElts * VT.getVectorElementType().getSizeInBits() <= MinSVESize) {
+        Mask =
+            getPTrue(DAG, DL, VT.changeVectorElementType(MVT::i1), PgPattern);
+        SDValue PassThru = DAG.getConstant(0, DL, VT);
+        SDValue NewLoad = DAG.getMaskedLoad(
+            VT, DL, MLD->getChain(), MLD->getBasePtr(), MLD->getOffset(), Mask,
+            PassThru, MLD->getMemoryVT(), MLD->getMemOperand(),
+            MLD->getAddressingMode(), ISD::ZEXTLOAD);
+
+        DAG.ReplaceAllUsesOfValueWith(SDValue(MLD, 1), NewLoad.getValue(1));
+
+        return NewLoad;
+      }
+    }
+  }
+
   return SDValue();
 }
 
 static SDValue performUzpCombine(SDNode *N, SelectionDAG &DAG) {
   SDLoc DL(N);
   SDValue Op0 = N->getOperand(0);
   SDValue Op1 = N->getOperand(1);
   EVT ResVT = N->getValueType(0);
if (Subtarget->supportsAddressTopByteIgnored() &&
     return SDValue(N, 0);
 
   if (SDValue Store = foldTruncStoreOfExt(DAG, N))
     return Store;
 
   return SDValue();
 }
 
+static SDValue performMSTORECombine(SDNode *N,
+                                    TargetLowering::DAGCombinerInfo &DCI,
+                                    SelectionDAG &DAG,
+                                    const AArch64Subtarget *Subtarget) {
+  MaskedStoreSDNode *MST = cast<MaskedStoreSDNode>(N);
+  SDValue Value = MST->getValue();
+  SDValue Mask = MST->getMask();
+  SDLoc DL(N);
+
+  // If this is a UZP1 followed by a masked store, fold this into a masked
+  // truncating store.  We can do this even if this is already a masked
+  // truncstore.
+  if (Value.getOpcode() == AArch64ISD::UZP1 && Value->hasOneUse() &&
+      MST->isUnindexed() && Mask->getOpcode() == AArch64ISD::PTRUE &&
+      Value.getValueType().isInteger()) {
+    Value = Value.getOperand(0);
+    if (Value.getOpcode() == ISD::BITCAST) {
+      EVT HalfVT =
+          Value.getValueType().getHalfNumVectorElementsVT(*DAG.getContext());
+      EVT InVT = Value.getOperand(0).getValueType();
+
+      if (HalfVT.widenIntegerVectorElementType(*DAG.getContext()) == InVT) {
+        unsigned MinSVESize = Subtarget->getMinSVEVectorSizeInBits();
+        unsigned PgPattern = Mask->getConstantOperandVal(0);
+
+        // Ensure we can double the size of the predicate pattern
+        unsigned NumElts = getNumElementsFromSVEPredPattern(PgPattern);
+        if (NumElts && NumElts * InVT.getVectorElementType().getSizeInBits() <=
+                           MinSVESize) {
+          Mask = getPTrue(DAG, DL, InVT.changeVectorElementType(MVT::i1),
+                          PgPattern);
+          return DAG.getMaskedStore(MST->getChain(), DL, Value.getOperand(0),
+                                    MST->getBasePtr(), MST->getOffset(), Mask,
+                                    MST->getMemoryVT(), MST->getMemOperand(),
+                                    MST->getAddressingMode(),
+                                    /*IsTruncating=*/true);
+        }
+      }
+    }
+  }
+
+  return SDValue();
+}
+
 /// \return true if part of the index was folded into the Base.
 static bool foldIndexIntoBase(SDValue &BasePtr, SDValue &Index, SDValue Scale,
                               SDLoc DL, SelectionDAG &DAG) {
   // This function assumes a vector of i64 indices.
   EVT IndexVT = Index.getValueType();
   if (!IndexVT.isVector() || IndexVT.getVectorElementType() != MVT::i64)
     return false;
 
SDValue AArch64TargetLowering::PerformDAGCombine(SDNode *N,
   case ISD::SETCC:
     return performSETCCCombine(N, DCI, DAG);
   case ISD::LOAD:
     if (performTBISimplification(N->getOperand(1), DCI, DAG))
       return SDValue(N, 0);
     break;
   case ISD::STORE:
     return performSTORECombine(N, DCI, DAG, Subtarget);
+  case ISD::MSTORE:
+    return performMSTORECombine(N, DCI, DAG, Subtarget);
   case ISD::MGATHER:
   case ISD::MSCATTER:
     return performMaskedGatherScatterCombine(N, DCI, DAG);
   case ISD::VECTOR_SPLICE:
     return performSVESpliceCombine(N, DAG);
   case ISD::FP_EXTEND:
     return performFPExtendCombine(N, DAG, DCI, Subtarget);
   case AArch64ISD::BRCOND:
     return performBRCONDCombine(N, DCI, DAG);
   case AArch64ISD::TBNZ:
   case AArch64ISD::TBZ:
     return performTBZCombine(N, DCI, DAG);
   case AArch64ISD::CSEL:
     return performCSELCombine(N, DCI, DAG);
   case AArch64ISD::DUP:
     return performDUPCombine(N, DCI);
   case AArch64ISD::DUPLANE128:
     return performDupLane128Combine(N, DAG);
   case AArch64ISD::NVCAST:
     return performNVCASTCombine(N);
   case AArch64ISD::SPLICE:
     return performSpliceCombine(N, DAG);
   case AArch64ISD::UUNPKLO:
   case AArch64ISD::UUNPKHI:
-    return performUnpackCombine(N, DAG);
+    return performUnpackCombine(N, DAG, Subtarget);
   case AArch64ISD::UZP1:
     return performUzpCombine(N, DAG);
   case AArch64ISD::SETCC_MERGE_ZERO:
     return performSetccMergeZeroCombine(N, DCI);
   case AArch64ISD::GLD1_MERGE_ZERO:
   case AArch64ISD::GLD1_SCALED_MERGE_ZERO:
   case AArch64ISD::GLD1_UXTW_MERGE_ZERO:
   case AArch64ISD::GLD1_SXTW_MERGE_ZERO:

llvm/test/CodeGen/AArch64/insert-subvector-res-legalization.ll

; CHECK-NEXT:    ret
   ret <vscale x 2 x i32> %ins
 }
 
 define <vscale x 2 x i32> @vec_scalable_subvec_fixed_idx_nonzero_large_i32(<vscale x 2 x i32>* %a, <8 x i32>* %b) #1 {
 ; CHECK-LABEL: vec_scalable_subvec_fixed_idx_nonzero_large_i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    str x29, [sp, #-16]! // 8-byte Folded Spill
 ; CHECK-NEXT:    addvl sp, sp, #-1
-; CHECK-NEXT:    cntd x8
 ; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    ptrue p1.s, vl8
-; CHECK-NEXT:    subs x8, x8, #8
+; CHECK-NEXT:    cntd x8
 ; CHECK-NEXT:    ld1w { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ld1w { z1.s }, p1/z, [x1]
+; CHECK-NEXT:    subs x8, x8, #8
+; CHECK-NEXT:    ptrue p1.d, vl8
 ; CHECK-NEXT:    csel x8, xzr, x8, lo
 ; CHECK-NEXT:    mov w9, #8
 ; CHECK-NEXT:    cmp x8, #8
 ; CHECK-NEXT:    csel x8, x8, x9, lo
 ; CHECK-NEXT:    mov x9, sp
-; CHECK-NEXT:    uunpklo z1.d, z1.s
 ; CHECK-NEXT:    st1d { z0.d }, p0, [sp]
-; CHECK-NEXT:    st1d { z1.d }, p0, [x9, x8, lsl #3]
+; CHECK-NEXT:    ld1w { z0.d }, p1/z, [x1]
+; CHECK-NEXT:    st1d { z0.d }, p0, [x9, x8, lsl #3]
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [sp]
 ; CHECK-NEXT:    addvl sp, sp, #1
 ; CHECK-NEXT:    ldr x29, [sp], #16 // 8-byte Folded Reload
 ; CHECK-NEXT:    ret
   %vec = load <vscale x 2 x i32>, <vscale x 2 x i32>* %a
   %subvec = load <8 x i32>, <8 x i32>* %b
   %ins = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v8i32(<vscale x 2 x i32> %vec, <8 x i32> %subvec, i64 8)
   ret <vscale x 2 x i32> %ins

llvm/test/CodeGen/AArch64/sve-fixed-length-fp-to-int.ll

 ; VBITS_GE_256-NEXT:    splice z1.h, p0, z1.h, z0.h
 ; VBITS_GE_256-NEXT:    ptrue p0.h, vl16
 ; VBITS_GE_256-NEXT:    st1h { z1.h }, p0, [x1]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: fcvtzu_v16f32_v16i16:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.s, vl16
+; VBITS_GE_512-NEXT:    ptrue p1.s
 ; VBITS_GE_512-NEXT:    ld1w { z0.s }, p0/z, [x0]
-; VBITS_GE_512-NEXT:    ptrue p0.s
-; VBITS_GE_512-NEXT:    fcvtzu z0.s, p0/m, z0.s
-; VBITS_GE_512-NEXT:    ptrue p0.h, vl16
-; VBITS_GE_512-NEXT:    uzp1 z0.h, z0.h, z0.h
-; VBITS_GE_512-NEXT:    st1h { z0.h }, p0, [x1]
+; VBITS_GE_512-NEXT:    fcvtzu z0.s, p1/m, z0.s
+; VBITS_GE_512-NEXT:    st1h { z0.s }, p0, [x1]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <16 x float>, <16 x float>* %a
   %res = fptoui <16 x float> %op1 to <16 x i16>
   store <16 x i16> %res, <16 x i16>* %b
   ret void
 }
 
 define void @fcvtzu_v32f32_v32i16(<32 x float>* %a, <32 x i16>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: fcvtzu_v32f32_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    ptrue p1.s
 ; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.s
-; CHECK-NEXT:    fcvtzu z0.s, p0/m, z0.s
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzu z0.s, p1/m, z0.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x float>, <32 x float>* %a
   %res = fptoui <32 x float> %op1 to <32 x i16>
   store <32 x i16> %res, <32 x i16>* %b
   ret void
 }
 
 define void @fcvtzu_v64f32_v64i16(<64 x float>* %a, <64 x i16>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: fcvtzu_v64f32_v64i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.s, vl64
+; CHECK-NEXT:    ptrue p1.s
 ; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.s
-; CHECK-NEXT:    fcvtzu z0.s, p0/m, z0.s
-; CHECK-NEXT:    ptrue p0.h, vl64
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzu z0.s, p1/m, z0.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x float>, <64 x float>* %a
   %res = fptoui <64 x float> %op1 to <64 x i16>
   store <64 x i16> %res, <64 x i16>* %b
   ret void
 }
 
 ;
; VBITS_GE_512-NEXT:    ret
   %res = fptoui <8 x double> %op1 to <8 x i16>
   ret <8 x i16> %res
 }
 
 define void @fcvtzu_v16f64_v16i16(<16 x double>* %a, <16 x i16>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: fcvtzu_v16f64_v16i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl16
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzu z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.h, vl16
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzu z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1h { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <16 x double>, <16 x double>* %a
   %res = fptoui <16 x double> %op1 to <16 x i16>
   store <16 x i16> %res, <16 x i16>* %b
   ret void
 }
 
 define void @fcvtzu_v32f64_v32i16(<32 x double>* %a, <32 x i16>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: fcvtzu_v32f64_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzu z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzu z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1h { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x double>, <32 x double>* %a
   %res = fptoui <32 x double> %op1 to <32 x i16>
   store <32 x i16> %res, <32 x i16>* %b
   ret void
 }
 
 ;

 ; VBITS_GE_256-NEXT:    splice z1.s, p0, z1.s, z0.s
 ; VBITS_GE_256-NEXT:    ptrue p0.s, vl8
 ; VBITS_GE_256-NEXT:    st1w { z1.s }, p0, [x1]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: fcvtzu_v8f64_v8i32:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.d, vl8
+; VBITS_GE_512-NEXT:    ptrue p1.d
 ; VBITS_GE_512-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; VBITS_GE_512-NEXT:    ptrue p0.d
-; VBITS_GE_512-NEXT:    fcvtzu z0.d, p0/m, z0.d
-; VBITS_GE_512-NEXT:    ptrue p0.s, vl8
-; VBITS_GE_512-NEXT:    uzp1 z0.s, z0.s, z0.s
-; VBITS_GE_512-NEXT:    st1w { z0.s }, p0, [x1]
+; VBITS_GE_512-NEXT:    fcvtzu z0.d, p1/m, z0.d
+; VBITS_GE_512-NEXT:    st1w { z0.d }, p0, [x1]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <8 x double>, <8 x double>* %a
   %res = fptoui <8 x double> %op1 to <8 x i32>
   store <8 x i32> %res, <8 x i32>* %b
   ret void
 }
 
 define void @fcvtzu_v16f64_v16i32(<16 x double>* %a, <16 x i32>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: fcvtzu_v16f64_v16i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl16
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzu z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.s, vl16
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x1]
+; CHECK-NEXT:    fcvtzu z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1w { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <16 x double>, <16 x double>* %a
   %res = fptoui <16 x double> %op1 to <16 x i32>
   store <16 x i32> %res, <16 x i32>* %b
   ret void
 }
 
 define void @fcvtzu_v32f64_v32i32(<32 x double>* %a, <32 x i32>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: fcvtzu_v32f64_v32i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzu z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.s, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x1]
+; CHECK-NEXT:    fcvtzu z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1w { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x double>, <32 x double>* %a
   %res = fptoui <32 x double> %op1 to <32 x i32>
   store <32 x i32> %res, <32 x i32>* %b
   ret void
 }
 
 ;

 ; VBITS_GE_256-NEXT:    splice z1.h, p0, z1.h, z0.h
 ; VBITS_GE_256-NEXT:    ptrue p0.h, vl16
 ; VBITS_GE_256-NEXT:    st1h { z1.h }, p0, [x1]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: fcvtzs_v16f32_v16i16:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.s, vl16
+; VBITS_GE_512-NEXT:    ptrue p1.s
 ; VBITS_GE_512-NEXT:    ld1w { z0.s }, p0/z, [x0]
-; VBITS_GE_512-NEXT:    ptrue p0.s
-; VBITS_GE_512-NEXT:    fcvtzs z0.s, p0/m, z0.s
-; VBITS_GE_512-NEXT:    ptrue p0.h, vl16
-; VBITS_GE_512-NEXT:    uzp1 z0.h, z0.h, z0.h
-; VBITS_GE_512-NEXT:    st1h { z0.h }, p0, [x1]
+; VBITS_GE_512-NEXT:    fcvtzs z0.s, p1/m, z0.s
+; VBITS_GE_512-NEXT:    st1h { z0.s }, p0, [x1]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <16 x float>, <16 x float>* %a
   %res = fptosi <16 x float> %op1 to <16 x i16>
   store <16 x i16> %res, <16 x i16>* %b
   ret void
 }
 
 define void @fcvtzs_v32f32_v32i16(<32 x float>* %a, <32 x i16>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: fcvtzs_v32f32_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    ptrue p1.s
 ; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.s
-; CHECK-NEXT:    fcvtzs z0.s, p0/m, z0.s
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzs z0.s, p1/m, z0.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x float>, <32 x float>* %a
   %res = fptosi <32 x float> %op1 to <32 x i16>
   store <32 x i16> %res, <32 x i16>* %b
   ret void
 }
 
 define void @fcvtzs_v64f32_v64i16(<64 x float>* %a, <64 x i16>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: fcvtzs_v64f32_v64i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.s, vl64
+; CHECK-NEXT:    ptrue p1.s
 ; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.s
-; CHECK-NEXT:    fcvtzs z0.s, p0/m, z0.s
-; CHECK-NEXT:    ptrue p0.h, vl64
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzs z0.s, p1/m, z0.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x float>, <64 x float>* %a
   %res = fptosi <64 x float> %op1 to <64 x i16>
   store <64 x i16> %res, <64 x i16>* %b
   ret void
 }
 
 ;
; VBITS_GE_512-NEXT:    ret
   %res = fptosi <8 x double> %op1 to <8 x i16>
   ret <8 x i16> %res
 }
 
 define void @fcvtzs_v16f64_v16i16(<16 x double>* %a, <16 x i16>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: fcvtzs_v16f64_v16i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl16
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzs z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.h, vl16
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzs z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1h { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <16 x double>, <16 x double>* %a
   %res = fptosi <16 x double> %op1 to <16 x i16>
   store <16 x i16> %res, <16 x i16>* %b
   ret void
 }
 
 define void @fcvtzs_v32f64_v32i16(<32 x double>* %a, <32 x i16>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: fcvtzs_v32f64_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzs z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x1]
+; CHECK-NEXT:    fcvtzs z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1h { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x double>, <32 x double>* %a
   %res = fptosi <32 x double> %op1 to <32 x i16>
   store <32 x i16> %res, <32 x i16>* %b
   ret void
 }
 
 ;

 ; VBITS_GE_256-NEXT:    splice z1.s, p0, z1.s, z0.s
 ; VBITS_GE_256-NEXT:    ptrue p0.s, vl8
 ; VBITS_GE_256-NEXT:    st1w { z1.s }, p0, [x1]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: fcvtzs_v8f64_v8i32:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.d, vl8
+; VBITS_GE_512-NEXT:    ptrue p1.d
 ; VBITS_GE_512-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; VBITS_GE_512-NEXT:    ptrue p0.d
-; VBITS_GE_512-NEXT:    fcvtzs z0.d, p0/m, z0.d
-; VBITS_GE_512-NEXT:    ptrue p0.s, vl8
-; VBITS_GE_512-NEXT:    uzp1 z0.s, z0.s, z0.s
-; VBITS_GE_512-NEXT:    st1w { z0.s }, p0, [x1]
+; VBITS_GE_512-NEXT:    fcvtzs z0.d, p1/m, z0.d
+; VBITS_GE_512-NEXT:    st1w { z0.d }, p0, [x1]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <8 x double>, <8 x double>* %a
   %res = fptosi <8 x double> %op1 to <8 x i32>
   store <8 x i32> %res, <8 x i32>* %b
   ret void
 }
 
 define void @fcvtzs_v16f64_v16i32(<16 x double>* %a, <16 x i32>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: fcvtzs_v16f64_v16i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl16
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzs z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.s, vl16
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x1]
+; CHECK-NEXT:    fcvtzs z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1w { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <16 x double>, <16 x double>* %a
   %res = fptosi <16 x double> %op1 to <16 x i32>
   store <16 x i32> %res, <16 x i32>* %b
   ret void
 }
 
 define void @fcvtzs_v32f64_v32i32(<32 x double>* %a, <32 x i32>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: fcvtzs_v32f64_v32i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
+; CHECK-NEXT:    ptrue p1.d
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0]
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    fcvtzs z0.d, p0/m, z0.d
-; CHECK-NEXT:    ptrue p0.s, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x1]
+; CHECK-NEXT:    fcvtzs z0.d, p1/m, z0.d
+; CHECK-NEXT:    st1w { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x double>, <32 x double>* %a
   %res = fptosi <32 x double> %op1 to <32 x i32>
   store <32 x i32> %res, <32 x i32>* %b
   ret void
 }
 
 ;

llvm/test/CodeGen/AArch64/sve-fixed-length-int-div.ll

; VBITS_GE_512-NEXT:    ret
   %res = sdiv <16 x i8> %op1, %op2
   ret <16 x i8> %res
 }
 
 define void @sdiv_v32i8(<32 x i8>* %a, <32 x i8>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: sdiv_v32i8:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.b, vl32
-; CHECK-NEXT:    ptrue p1.s, vl32
 ; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
 ; CHECK-NEXT:    ld1b { z1.b }, p0/z, [x1]
+; CHECK-NEXT:    ptrue p0.s, vl32
 ; CHECK-NEXT:    sunpklo z1.h, z1.b
 ; CHECK-NEXT:    sunpklo z0.h, z0.b
 ; CHECK-NEXT:    sunpklo z1.s, z1.h
 ; CHECK-NEXT:    sunpklo z0.s, z0.h
-; CHECK-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    sdiv z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1b { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i8>, <32 x i8>* %a
   %op2 = load <32 x i8>, <32 x i8>* %b
   %res = sdiv <32 x i8> %op1, %op2
   store <32 x i8> %res, <32 x i8>* %a
   ret void
 }
 
 define void @sdiv_v64i8(<64 x i8>* %a, <64 x i8>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: sdiv_v64i8:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.b, vl64
-; CHECK-NEXT:    ptrue p1.s, vl64
 ; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
 ; CHECK-NEXT:    ld1b { z1.b }, p0/z, [x1]
+; CHECK-NEXT:    ptrue p0.s, vl64
 ; CHECK-NEXT:    sunpklo z1.h, z1.b
 ; CHECK-NEXT:    sunpklo z0.h, z0.b
 ; CHECK-NEXT:    sunpklo z1.s, z1.h
 ; CHECK-NEXT:    sunpklo z0.s, z0.h
-; CHECK-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    sdiv z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1b { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x i8>, <64 x i8>* %a
   %op2 = load <64 x i8>, <64 x i8>* %b
   %res = sdiv <64 x i8> %op1, %op2
   store <64 x i8> %res, <64 x i8>* %a
   ret void
 }
 
 define void @sdiv_v128i8(<128 x i8>* %a, <128 x i8>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: sdiv_v128i8:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.b, vl128
-; CHECK-NEXT:    ptrue p1.s, vl64
 ; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
 ; CHECK-NEXT:    ld1b { z1.b }, p0/z, [x1]
+; CHECK-NEXT:    ptrue p0.s, vl64
 ; CHECK-NEXT:    sunpklo z1.h, z1.b
 ; CHECK-NEXT:    sunpklo z0.h, z0.b
 ; CHECK-NEXT:    sunpkhi z2.s, z1.h
 ; CHECK-NEXT:    sunpkhi z3.s, z0.h
 ; CHECK-NEXT:    sunpklo z1.s, z1.h
 ; CHECK-NEXT:    sunpklo z0.s, z0.h
-; CHECK-NEXT:    sdivr z2.s, p1/m, z2.s, z3.s
-; CHECK-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
+; CHECK-NEXT:    sdivr z2.s, p0/m, z2.s, z3.s
+; CHECK-NEXT:    sdiv z0.s, p0/m, z0.s, z1.s
 ; CHECK-NEXT:    uzp1 z0.h, z0.h, z2.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    ptrue p0.h, vl128
+; CHECK-NEXT:    st1b { z0.h }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <128 x i8>, <128 x i8>* %a
   %op2 = load <128 x i8>, <128 x i8>* %b
   %res = sdiv <128 x i8> %op1, %op2
   store <128 x i8> %res, <128 x i8>* %a
   ret void
 }
 

 ; VBITS_GE_256-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
 ; VBITS_GE_256-NEXT:    uzp1 z0.h, z0.h, z2.h
 ; VBITS_GE_256-NEXT:    st1h { z0.h }, p0, [x0]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: sdiv_v16i16:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.h, vl16
-; VBITS_GE_512-NEXT:    ptrue p1.s, vl16
 ; VBITS_GE_512-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; VBITS_GE_512-NEXT:    ld1h { z1.h }, p0/z, [x1]
+; VBITS_GE_512-NEXT:    ptrue p0.s, vl16
 ; VBITS_GE_512-NEXT:    sunpklo z1.s, z1.h
 ; VBITS_GE_512-NEXT:    sunpklo z0.s, z0.h
-; VBITS_GE_512-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
-; VBITS_GE_512-NEXT:    uzp1 z0.h, z0.h, z0.h
-; VBITS_GE_512-NEXT:    st1h { z0.h }, p0, [x0]
+; VBITS_GE_512-NEXT:    sdiv z0.s, p0/m, z0.s, z1.s
+; VBITS_GE_512-NEXT:    st1h { z0.s }, p0, [x0]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <16 x i16>, <16 x i16>* %a
   %op2 = load <16 x i16>, <16 x i16>* %b
   %res = sdiv <16 x i16> %op1, %op2
   store <16 x i16> %res, <16 x i16>* %a
   ret void
 }
 
 define void @sdiv_v32i16(<32 x i16>* %a, <32 x i16>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: sdiv_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    ptrue p1.s, vl32
 ; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ld1h { z1.h }, p0/z, [x1]
+; CHECK-NEXT:    ptrue p0.s, vl32
 ; CHECK-NEXT:    sunpklo z1.s, z1.h
 ; CHECK-NEXT:    sunpklo z0.s, z0.h
-; CHECK-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    sdiv z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i16>, <32 x i16>* %a
   %op2 = load <32 x i16>, <32 x i16>* %b
   %res = sdiv <32 x i16> %op1, %op2
   store <32 x i16> %res, <32 x i16>* %a
   ret void
 }
 
 define void @sdiv_v64i16(<64 x i16>* %a, <64 x i16>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: sdiv_v64i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.h, vl64
-; CHECK-NEXT:    ptrue p1.s, vl64
 ; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ld1h { z1.h }, p0/z, [x1]
+; CHECK-NEXT:    ptrue p0.s, vl64
 ; CHECK-NEXT:    sunpklo z1.s, z1.h
 ; CHECK-NEXT:    sunpklo z0.s, z0.h
-; CHECK-NEXT:    sdiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    sdiv z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x i16>, <64 x i16>* %a
   %op2 = load <64 x i16>, <64 x i16>* %b
   %res = sdiv <64 x i16> %op1, %op2
   store <64 x i16> %res, <64 x i16>* %a
   ret void
 }
 

 ; VBITS_GE_512-NEXT:    ret
   %res = udiv <16 x i8> %op1, %op2
   ret <16 x i8> %res
 }
 
 define void @udiv_v32i8(<32 x i8>* %a, <32 x i8>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: udiv_v32i8:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.b, vl32
-; CHECK-NEXT:    ptrue p1.s, vl32
-; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
-; CHECK-NEXT:    ld1b { z1.b }, p0/z, [x1]
-; CHECK-NEXT:    uunpklo z1.h, z1.b
-; CHECK-NEXT:    uunpklo z0.h, z0.b
-; CHECK-NEXT:    uunpklo z1.s, z1.h
-; CHECK-NEXT:    uunpklo z0.s, z0.h
-; CHECK-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    ld1b { z0.s }, p0/z, [x1]
+; CHECK-NEXT:    ld1b { z1.s }, p0/z, [x0]
+; CHECK-NEXT:    udivr z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1b { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i8>, <32 x i8>* %a
   %op2 = load <32 x i8>, <32 x i8>* %b
   %res = udiv <32 x i8> %op1, %op2
   store <32 x i8> %res, <32 x i8>* %a
   ret void
 }
 
 define void @udiv_v64i8(<64 x i8>* %a, <64 x i8>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: udiv_v64i8:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.b, vl64
-; CHECK-NEXT:    ptrue p1.s, vl64
-; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
-; CHECK-NEXT:    ld1b { z1.b }, p0/z, [x1]
-; CHECK-NEXT:    uunpklo z1.h, z1.b
-; CHECK-NEXT:    uunpklo z0.h, z0.b
-; CHECK-NEXT:    uunpklo z1.s, z1.h
-; CHECK-NEXT:    uunpklo z0.s, z0.h
-; CHECK-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    ptrue p0.s, vl64
+; CHECK-NEXT:    ld1b { z0.s }, p0/z, [x1]
+; CHECK-NEXT:    ld1b { z1.s }, p0/z, [x0]
+; CHECK-NEXT:    udivr z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1b { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x i8>, <64 x i8>* %a
   %op2 = load <64 x i8>, <64 x i8>* %b
   %res = udiv <64 x i8> %op1, %op2
   store <64 x i8> %res, <64 x i8>* %a
   ret void
 }
 
 define void @udiv_v128i8(<128 x i8>* %a, <128 x i8>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: udiv_v128i8:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.b, vl128
+; CHECK-NEXT:    ptrue p0.h, vl128
 ; CHECK-NEXT:    ptrue p1.s, vl64
-; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
-; CHECK-NEXT:    ld1b { z1.b }, p0/z, [x1]
-; CHECK-NEXT:    uunpklo z1.h, z1.b
-; CHECK-NEXT:    uunpklo z0.h, z0.b
-; CHECK-NEXT:    uunpkhi z2.s, z1.h
-; CHECK-NEXT:    uunpkhi z3.s, z0.h
-; CHECK-NEXT:    uunpklo z1.s, z1.h
+; CHECK-NEXT:    ld1b { z0.h }, p0/z, [x1]
+; CHECK-NEXT:    ld1b { z1.h }, p0/z, [x0]
+; CHECK-NEXT:    uunpkhi z2.s, z0.h
+; CHECK-NEXT:    uunpkhi z3.s, z1.h
 ; CHECK-NEXT:    uunpklo z0.s, z0.h
+; CHECK-NEXT:    uunpklo z1.s, z1.h
 ; CHECK-NEXT:    udivr z2.s, p1/m, z2.s, z3.s
-; CHECK-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
+; CHECK-NEXT:    udivr z0.s, p1/m, z0.s, z1.s
 ; CHECK-NEXT:    uzp1 z0.h, z0.h, z2.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    st1b { z0.h }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <128 x i8>, <128 x i8>* %a
   %op2 = load <128 x i8>, <128 x i8>* %b
   %res = udiv <128 x i8> %op1, %op2
   store <128 x i8> %res, <128 x i8>* %a
   ret void
 }
 

 ; VBITS_GE_256-NEXT:    udivr z2.s, p1/m, z2.s, z3.s
 ; VBITS_GE_256-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
 ; VBITS_GE_256-NEXT:    uzp1 z0.h, z0.h, z2.h
 ; VBITS_GE_256-NEXT:    st1h { z0.h }, p0, [x0]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: udiv_v16i16:
 ; VBITS_GE_512:       // %bb.0:
-; VBITS_GE_512-NEXT:    ptrue p0.h, vl16
-; VBITS_GE_512-NEXT:    ptrue p1.s, vl16
-; VBITS_GE_512-NEXT:    ld1h { z0.h }, p0/z, [x0]
-; VBITS_GE_512-NEXT:    ld1h { z1.h }, p0/z, [x1]
-; VBITS_GE_512-NEXT:    uunpklo z1.s, z1.h
-; VBITS_GE_512-NEXT:    uunpklo z0.s, z0.h
-; VBITS_GE_512-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
-; VBITS_GE_512-NEXT:    uzp1 z0.h, z0.h, z0.h
-; VBITS_GE_512-NEXT:    st1h { z0.h }, p0, [x0]
+; VBITS_GE_512-NEXT:    ptrue p0.s, vl16
+; VBITS_GE_512-NEXT:    ld1h { z0.s }, p0/z, [x1]
+; VBITS_GE_512-NEXT:    ld1h { z1.s }, p0/z, [x0]
+; VBITS_GE_512-NEXT:    udivr z0.s, p0/m, z0.s, z1.s
+; VBITS_GE_512-NEXT:    st1h { z0.s }, p0, [x0]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <16 x i16>, <16 x i16>* %a
   %op2 = load <16 x i16>, <16 x i16>* %b
   %res = udiv <16 x i16> %op1, %op2
   store <16 x i16> %res, <16 x i16>* %a
   ret void
 }
 
 define void @udiv_v32i16(<32 x i16>* %a, <32 x i16>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: udiv_v32i16:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    ptrue p1.s, vl32
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
-; CHECK-NEXT:    ld1h { z1.h }, p0/z, [x1]
-; CHECK-NEXT:    uunpklo z1.s, z1.h
-; CHECK-NEXT:    uunpklo z0.s, z0.h
-; CHECK-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    ld1h { z0.s }, p0/z, [x1]
+; CHECK-NEXT:    ld1h { z1.s }, p0/z, [x0]
+; CHECK-NEXT:    udivr z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i16>, <32 x i16>* %a
   %op2 = load <32 x i16>, <32 x i16>* %b
   %res = udiv <32 x i16> %op1, %op2
   store <32 x i16> %res, <32 x i16>* %a
   ret void
 }
 
 define void @udiv_v64i16(<64 x i16>* %a, <64 x i16>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: udiv_v64i16:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.h, vl64
-; CHECK-NEXT:    ptrue p1.s, vl64
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
-; CHECK-NEXT:    ld1h { z1.h }, p0/z, [x1]
-; CHECK-NEXT:    uunpklo z1.s, z1.h
-; CHECK-NEXT:    uunpklo z0.s, z0.h
-; CHECK-NEXT:    udiv z0.s, p1/m, z0.s, z1.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    ptrue p0.s, vl64
+; CHECK-NEXT:    ld1h { z0.s }, p0/z, [x1]
+; CHECK-NEXT:    ld1h { z1.s }, p0/z, [x0]
+; CHECK-NEXT:    udivr z0.s, p0/m, z0.s, z1.s
+; CHECK-NEXT:    st1h { z0.s }, p0, [x0]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x i16>, <64 x i16>* %a
   %op2 = load <64 x i16>, <64 x i16>* %b
   %res = udiv <64 x i16> %op1, %op2
   store <64 x i16> %res, <64 x i16>* %a
   ret void
 }
 

llvm/test/CodeGen/AArch64/sve-fixed-length-int-to-fp.ll

 ; VBITS_GE_256-NEXT:    ucvtf z1.s, p0/m, z1.s
 ; VBITS_GE_256-NEXT:    ucvtf z0.s, p0/m, z0.s
 ; VBITS_GE_256-NEXT:    st1w { z1.s }, p0, [x1]
 ; VBITS_GE_256-NEXT:    st1w { z0.s }, p0, [x1, x8, lsl #2]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: ucvtf_v16i16_v16f32:
 ; VBITS_GE_512:       // %bb.0:
-; VBITS_GE_512-NEXT:    ptrue p0.h, vl16
-; VBITS_GE_512-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; VBITS_GE_512-NEXT:    ptrue p0.s, vl16
-; VBITS_GE_512-NEXT:    uunpklo z0.s, z0.h
+; VBITS_GE_512-NEXT:    ld1h { z0.s }, p0/z, [x0]
 ; VBITS_GE_512-NEXT:    ucvtf z0.s, p0/m, z0.s
 ; VBITS_GE_512-NEXT:    st1w { z0.s }, p0, [x1]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <16 x i16>, <16 x i16>* %a
   %res = uitofp <16 x i16> %op1 to <16 x float>
   store <16 x float> %res, <16 x float>* %b
   ret void
 }
 
 define void @ucvtf_v32i16_v32f32(<32 x i16>* %a, <32 x float>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: ucvtf_v32i16_v32f32:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ptrue p0.s, vl32
-; CHECK-NEXT:    uunpklo z0.s, z0.h
+; CHECK-NEXT:    ld1h { z0.s }, p0/z, [x0]
 ; CHECK-NEXT:    ucvtf z0.s, p0/m, z0.s
 ; CHECK-NEXT:    st1w { z0.s }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i16>, <32 x i16>* %a
   %res = uitofp <32 x i16> %op1 to <32 x float>
   store <32 x float> %res, <32 x float>* %b
   ret void
 }
 
 define void @ucvtf_v64i16_v64f32(<64 x i16>* %a, <64 x float>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: ucvtf_v64i16_v64f32:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.h, vl64
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ptrue p0.s, vl64
-; CHECK-NEXT:    uunpklo z0.s, z0.h
+; CHECK-NEXT:    ld1h { z0.s }, p0/z, [x0]
 ; CHECK-NEXT:    ucvtf z0.s, p0/m, z0.s
 ; CHECK-NEXT:    st1w { z0.s }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <64 x i16>, <64 x i16>* %a
   %res = uitofp <64 x i16> %op1 to <64 x float>
   store <64 x float> %res, <64 x float>* %b
   ret void
 }
; VBITS_GE_512-NEXT:    ret
   %res = uitofp <8 x i16> %op1 to <8 x double>
   store <8 x double> %res, <8 x double>* %b
   ret void
 }
 
 define void @ucvtf_v16i16_v16f64(<16 x i16>* %a, <16 x double>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: ucvtf_v16i16_v16f64:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.h, vl16
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ptrue p0.d, vl16
-; CHECK-NEXT:    uunpklo z0.s, z0.h
-; CHECK-NEXT:    uunpklo z0.d, z0.s
+; CHECK-NEXT:    ld1h { z0.d }, p0/z, [x0]
 ; CHECK-NEXT:    ucvtf z0.d, p0/m, z0.d
 ; CHECK-NEXT:    st1d { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <16 x i16>, <16 x i16>* %a
   %res = uitofp <16 x i16> %op1 to <16 x double>
   store <16 x double> %res, <16 x double>* %b
   ret void
 }
 
 define void @ucvtf_v32i16_v32f64(<32 x i16>* %a, <32 x double>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: ucvtf_v32i16_v32f64:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ptrue p0.d, vl32
-; CHECK-NEXT:    uunpklo z0.s, z0.h
-; CHECK-NEXT:    uunpklo z0.d, z0.s
+; CHECK-NEXT:    ld1h { z0.d }, p0/z, [x0]
 ; CHECK-NEXT:    ucvtf z0.d, p0/m, z0.d
 ; CHECK-NEXT:    st1d { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i16>, <32 x i16>* %a
   %res = uitofp <32 x i16> %op1 to <32 x double>
   store <32 x double> %res, <32 x double>* %b
   ret void
 }

 ; VBITS_GE_256-NEXT:    ucvtf z1.d, p0/m, z1.d
 ; VBITS_GE_256-NEXT:    ucvtf z0.d, p0/m, z0.d
 ; VBITS_GE_256-NEXT:    st1d { z1.d }, p0, [x1]
 ; VBITS_GE_256-NEXT:    st1d { z0.d }, p0, [x1, x8, lsl #3]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: ucvtf_v8i32_v8f64:
 ; VBITS_GE_512:       // %bb.0:
-; VBITS_GE_512-NEXT:    ptrue p0.s, vl8
-; VBITS_GE_512-NEXT:    ld1w { z0.s }, p0/z, [x0]
 ; VBITS_GE_512-NEXT:    ptrue p0.d, vl8
-; VBITS_GE_512-NEXT:    uunpklo z0.d, z0.s
+; VBITS_GE_512-NEXT:    ld1w { z0.d }, p0/z, [x0]
 ; VBITS_GE_512-NEXT:    ucvtf z0.d, p0/m, z0.d
 ; VBITS_GE_512-NEXT:    st1d { z0.d }, p0, [x1]
 ; VBITS_GE_512-NEXT:    ret
   %op1 = load <8 x i32>, <8 x i32>* %a
   %res = uitofp <8 x i32> %op1 to <8 x double>
   store <8 x double> %res, <8 x double>* %b
   ret void
 }
 
 define void @ucvtf_v16i32_v16f64(<16 x i32>* %a, <16 x double>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: ucvtf_v16i32_v16f64:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.s, vl16
-; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
 ; CHECK-NEXT:    ptrue p0.d, vl16
-; CHECK-NEXT:    uunpklo z0.d, z0.s
+; CHECK-NEXT:    ld1w { z0.d }, p0/z, [x0]
 ; CHECK-NEXT:    ucvtf z0.d, p0/m, z0.d
 ; CHECK-NEXT:    st1d { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <16 x i32>, <16 x i32>* %a
   %res = uitofp <16 x i32> %op1 to <16 x double>
   store <16 x double> %res, <16 x double>* %b
   ret void
 }
 
 define void @ucvtf_v32i32_v32f64(<32 x i32>* %a, <32 x double>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: ucvtf_v32i32_v32f64:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    ptrue p0.s, vl32
-; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
 ; CHECK-NEXT:    ptrue p0.d, vl32
-; CHECK-NEXT:    uunpklo z0.d, z0.s
+; CHECK-NEXT:    ld1w { z0.d }, p0/z, [x0]
 ; CHECK-NEXT:    ucvtf z0.d, p0/m, z0.d
 ; CHECK-NEXT:    st1d { z0.d }, p0, [x1]
 ; CHECK-NEXT:    ret
   %op1 = load <32 x i32>, <32 x i32>* %a
   %res = uitofp <32 x i32> %op1 to <32 x double>
   store <32 x double> %res, <32 x double>* %b
   ret void
 }

llvm/test/CodeGen/AArch64/sve-fixed-length-mask-opt.ll

 }
 
 define void @masked_gather_v4i8(<4 x i8>* %a, <4 x i8*>* %b) vscale_range(2,0) #0 {
 ; CHECK-LABEL: masked_gather_v4i8:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl4
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; CHECK-NEXT:    ld1b { z0.d }, p0/z, [z0.d]
-; CHECK-NEXT:    ptrue p0.h, vl4
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1b { z0.h }, p0, [x0]
+; CHECK-NEXT:    st1b { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %ptrs = load <4 x i8*>, <4 x i8*>* %b
   %vals = call <4 x i8> @llvm.masked.gather.v4i8(<4 x i8*> %ptrs, i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>, <4 x i8> undef)
   store <4 x i8> %vals, <4 x i8>* %a
   ret void
 }
 
 define void @masked_gather_v8i8(<8 x i8>* %a, <8 x i8*>* %b) #0 {

 }
 
 define void @masked_gather_v32i8(<32 x i8>* %a, <32 x i8*>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: masked_gather_v32i8:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; CHECK-NEXT:    ld1b { z0.d }, p0/z, [z0.d]
-; CHECK-NEXT:    ptrue p0.b, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    st1b { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %ptrs = load <32 x i8*>, <32 x i8*>* %b
   %vals = call <32 x i8> @llvm.masked.gather.v32i8(<32 x i8*> %ptrs, i32 8, <32 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                        i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                        i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                        i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <32 x i8> undef)
   store <32 x i8> %vals, <32 x i8>* %a
   ret void

 }
 
 define void @masked_gather_v16i16(<16 x i16>* %a, <16 x i16*>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: masked_gather_v16i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl16
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; CHECK-NEXT:    ld1h { z0.d }, p0/z, [z0.d]
-; CHECK-NEXT:    ptrue p0.h, vl16
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    st1h { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %ptrs = load <16 x i16*>, <16 x i16*>* %b
   %vals = call <16 x i16> @llvm.masked.gather.v16i16(<16 x i16*> %ptrs, i32 8, <16 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <16 x i16> undef)
   store <16 x i16> %vals, <16 x i16>* %a
   ret void
 }
 
 define void @masked_gather_v32i16(<32 x i16>* %a, <32 x i16*>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: masked_gather_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; CHECK-NEXT:    ld1h { z0.d }, p0/z, [z0.d]
-; CHECK-NEXT:    ptrue p0.h, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    st1h { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %ptrs = load <32 x i16*>, <32 x i16*>* %b
   %vals = call <32 x i16> @llvm.masked.gather.v32i16(<32 x i16*> %ptrs, i32 8, <32 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <32 x i16> undef)
   store <32 x i16> %vals, <32 x i16>* %a
   ret void

 ; VBITS_GE_256-NEXT:    st1w { z1.s }, p0, [x0]
 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: masked_gather_v8i32:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.d, vl8
 ; VBITS_GE_512-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; VBITS_GE_512-NEXT:    ld1w { z0.d }, p0/z, [z0.d]
-; VBITS_GE_512-NEXT:    ptrue p0.s, vl8
-; VBITS_GE_512-NEXT:    uzp1 z0.s, z0.s, z0.s
-; VBITS_GE_512-NEXT:    st1w { z0.s }, p0, [x0]
+; VBITS_GE_512-NEXT:    st1w { z0.d }, p0, [x0]
 ; VBITS_GE_512-NEXT:    ret
   %ptrs = load <8 x i32*>, <8 x i32*>* %b
   %vals = call <8 x i32> @llvm.masked.gather.v8i32(<8 x i32*> %ptrs, i32 8, <8 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <8 x i32> undef)
   store <8 x i32> %vals, <8 x i32>* %a
   ret void
 }
 
 define void @masked_gather_v16i32(<16 x i32>* %a, <16 x i32*>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: masked_gather_v16i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl16
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; CHECK-NEXT:    ld1w { z0.d }, p0/z, [z0.d]
-; CHECK-NEXT:    ptrue p0.s, vl16
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x0]
+; CHECK-NEXT:    st1w { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %ptrs = load <16 x i32*>, <16 x i32*>* %b
   %vals = call <16 x i32> @llvm.masked.gather.v16i32(<16 x i32*> %ptrs, i32 8, <16 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <16 x i32> undef)
   store <16 x i32> %vals, <16 x i32>* %a
   ret void
 }
 
 define void @masked_gather_v32i32(<32 x i32>* %a, <32 x i32*>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: masked_gather_v32i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.d, vl32
 ; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x1]
 ; CHECK-NEXT:    ld1w { z0.d }, p0/z, [z0.d]
-; CHECK-NEXT:    ptrue p0.s, vl32
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x0]
+; CHECK-NEXT:    st1w { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %ptrs = load <32 x i32*>, <32 x i32*>* %b
   %vals = call <32 x i32> @llvm.masked.gather.v32i32(<32 x i32*> %ptrs, i32 8, <32 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true,
                                                                                           i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <32 x i32> undef)
   store <32 x i32> %vals, <32 x i32>* %a
   ret void

llvm/test/CodeGen/AArch64/sve-fixed-length-masked-gather.ll

 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ldr s0, [x0]
 ; CHECK-NEXT:    ptrue p0.d, vl4
 ; CHECK-NEXT:    ld1d { z1.d }, p0/z, [x1]
 ; CHECK-NEXT:    ushll v0.8h, v0.8b, #0
 ; CHECK-NEXT:    cmeq v0.4h, v0.4h, #0
 ; CHECK-NEXT:    sunpklo z0.s, z0.h
 ; CHECK-NEXT:    sunpklo z0.d, z0.s
-; CHECK-NEXT:    cmpne p0.d, p0/z, z0.d, #0
-; CHECK-NEXT:    ld1b { z0.d }, p0/z, [z1.d]
-; CHECK-NEXT:    ptrue p0.h, vl4
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1b { z0.h }, p0, [x0]
+; CHECK-NEXT:    cmpne p1.d, p0/z, z0.d, #0
+; CHECK-NEXT:    ld1b { z0.d }, p1/z, [z1.d]
+; CHECK-NEXT:    st1b { z0.d }, p0, [x0]
 ; CHECK-NEXT:    ret
   %cval = load <4 x i8>, <4 x i8>* %a
   %ptrs = load <4 x i8*>, <4 x i8*>* %b
   %mask = icmp eq <4 x i8> %cval, zeroinitializer
   %vals = call <4 x i8> @llvm.masked.gather.v4i8(<4 x i8*> %ptrs, i32 8, <4 x i1> %mask, <4 x i8> undef)
   store <4 x i8> %vals, <4 x i8>* %a
   ret void
 }

 
 define void @masked_gather_v32i8(<32 x i8>* %a, <32 x i8*>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: masked_gather_v32i8:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.b, vl32
 ; CHECK-NEXT:    ptrue p1.d, vl32
 ; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
 ; CHECK-NEXT:    ld1d { z1.d }, p1/z, [x1]
-; CHECK-NEXT:    cmpeq p1.b, p0/z, z0.b, #0
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    ld1b { z0.d }, p1/z, [z1.d]
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    cmpeq p0.b, p0/z, z0.b, #0
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    ld1b { z0.d }, p0/z, [z1.d]
+; CHECK-NEXT:    st1b { z0.d }, p1, [x0]
 ; CHECK-NEXT:    ret
   %cval = load <32 x i8>, <32 x i8>* %a
   %ptrs = load <32 x i8*>, <32 x i8*>* %b
   %mask = icmp eq <32 x i8> %cval, zeroinitializer
   %vals = call <32 x i8> @llvm.masked.gather.v32i8(<32 x i8*> %ptrs, i32 8, <32 x i1> %mask, <32 x i8> undef)
   store <32 x i8> %vals, <32 x i8>* %a
   ret void
 }

 
 define void @masked_gather_v16i16(<16 x i16>* %a, <16 x i16*>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: masked_gather_v16i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.h, vl16
 ; CHECK-NEXT:    ptrue p1.d, vl16
 ; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ld1d { z1.d }, p1/z, [x1]
-; CHECK-NEXT:    cmpeq p1.h, p0/z, z0.h, #0
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    ld1h { z0.d }, p1/z, [z1.d]
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    cmpeq p0.h, p0/z, z0.h, #0
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    ld1h { z0.d }, p0/z, [z1.d]
+; CHECK-NEXT:    st1h { z0.d }, p1, [x0]
 ; CHECK-NEXT:    ret
   %cval = load <16 x i16>, <16 x i16>* %a
   %ptrs = load <16 x i16*>, <16 x i16*>* %b
   %mask = icmp eq <16 x i16> %cval, zeroinitializer
   %vals = call <16 x i16> @llvm.masked.gather.v16i16(<16 x i16*> %ptrs, i32 8, <16 x i1> %mask, <16 x i16> undef)
   store <16 x i16> %vals, <16 x i16>* %a
   ret void
 }
 
 define void @masked_gather_v32i16(<32 x i16>* %a, <32 x i16*>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: masked_gather_v32i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.h, vl32
 ; CHECK-NEXT:    ptrue p1.d, vl32
 ; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
 ; CHECK-NEXT:    ld1d { z1.d }, p1/z, [x1]
-; CHECK-NEXT:    cmpeq p1.h, p0/z, z0.h, #0
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    ld1h { z0.d }, p1/z, [z1.d]
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    cmpeq p0.h, p0/z, z0.h, #0
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    ld1h { z0.d }, p0/z, [z1.d]
+; CHECK-NEXT:    st1h { z0.d }, p1, [x0]
 ; CHECK-NEXT:    ret
   %cval = load <32 x i16>, <32 x i16>* %a
   %ptrs = load <32 x i16*>, <32 x i16*>* %b
   %mask = icmp eq <32 x i16> %cval, zeroinitializer
   %vals = call <32 x i16> @llvm.masked.gather.v32i16(<32 x i16*> %ptrs, i32 8, <32 x i1> %mask, <32 x i16> undef)
   store <32 x i16> %vals, <32 x i16>* %a
   ret void
 }

 ; VBITS_GE_256-NEXT:    ret
 ;
 ; VBITS_GE_512-LABEL: masked_gather_v8i32:
 ; VBITS_GE_512:       // %bb.0:
 ; VBITS_GE_512-NEXT:    ptrue p0.s, vl8
 ; VBITS_GE_512-NEXT:    ptrue p1.d, vl8
 ; VBITS_GE_512-NEXT:    ld1w { z0.s }, p0/z, [x0]
 ; VBITS_GE_512-NEXT:    ld1d { z1.d }, p1/z, [x1]
-; VBITS_GE_512-NEXT:    cmpeq p1.s, p0/z, z0.s, #0
-; VBITS_GE_512-NEXT:    punpklo p1.h, p1.b
-; VBITS_GE_512-NEXT:    ld1w { z0.d }, p1/z, [z1.d]
-; VBITS_GE_512-NEXT:    uzp1 z0.s, z0.s, z0.s
-; VBITS_GE_512-NEXT:    st1w { z0.s }, p0, [x0]
+; VBITS_GE_512-NEXT:    cmpeq p0.s, p0/z, z0.s, #0
+; VBITS_GE_512-NEXT:    punpklo p0.h, p0.b
+; VBITS_GE_512-NEXT:    ld1w { z0.d }, p0/z, [z1.d]
+; VBITS_GE_512-NEXT:    st1w { z0.d }, p1, [x0]
 ; VBITS_GE_512-NEXT:    ret
   %cval = load <8 x i32>, <8 x i32>* %a
   %ptrs = load <8 x i32*>, <8 x i32*>* %b
   %mask = icmp eq <8 x i32> %cval, zeroinitializer
   %vals = call <8 x i32> @llvm.masked.gather.v8i32(<8 x i32*> %ptrs, i32 8, <8 x i1> %mask, <8 x i32> undef)
   store <8 x i32> %vals, <8 x i32>* %a
   ret void
 }
 
 define void @masked_gather_v16i32(<16 x i32>* %a, <16 x i32*>* %b) vscale_range(8,0) #0 {
 ; CHECK-LABEL: masked_gather_v16i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.s, vl16
 ; CHECK-NEXT:    ptrue p1.d, vl16
 ; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
 ; CHECK-NEXT:    ld1d { z1.d }, p1/z, [x1]
-; CHECK-NEXT:    cmpeq p1.s, p0/z, z0.s, #0
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    ld1w { z0.d }, p1/z, [z1.d]
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x0]
+; CHECK-NEXT:    cmpeq p0.s, p0/z, z0.s, #0
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    ld1w { z0.d }, p0/z, [z1.d]
+; CHECK-NEXT:    st1w { z0.d }, p1, [x0]
 ; CHECK-NEXT:    ret
   %cval = load <16 x i32>, <16 x i32>* %a
   %ptrs = load <16 x i32*>, <16 x i32*>* %b
   %mask = icmp eq <16 x i32> %cval, zeroinitializer
   %vals = call <16 x i32> @llvm.masked.gather.v16i32(<16 x i32*> %ptrs, i32 8, <16 x i1> %mask, <16 x i32> undef)
   store <16 x i32> %vals, <16 x i32>* %a
   ret void
 }
 
 define void @masked_gather_v32i32(<32 x i32>* %a, <32 x i32*>* %b) vscale_range(16,0) #0 {
 ; CHECK-LABEL: masked_gather_v32i32:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ptrue p0.s, vl32
 ; CHECK-NEXT:    ptrue p1.d, vl32
 ; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
 ; CHECK-NEXT:    ld1d { z1.d }, p1/z, [x1]
-; CHECK-NEXT:    cmpeq p1.s, p0/z, z0.s, #0
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    ld1w { z0.d }, p1/z, [z1.d]
-; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x0]
+; CHECK-NEXT:    cmpeq p0.s, p0/z, z0.s, #0
+; CHECK-NEXT:    punpklo p0.h, p0.b
+; CHECK-NEXT:    ld1w { z0.d }, p0/z, [z1.d]
+; CHECK-NEXT:    st1w { z0.d }, p1, [x0]
 ; CHECK-NEXT:    ret
   %cval = load <32 x i32>, <32 x i32>* %a
   %ptrs = load <32 x i32*>, <32 x i32*>* %b
   %mask = icmp eq <32 x i32> %cval, zeroinitializer
   %vals = call <32 x i32> @llvm.masked.gather.v32i32(<32 x i32*> %ptrs, i32 8, <32 x i1> %mask, <32 x i32> undef)
   store <32 x i32> %vals, <32 x i32>* %a
   ret void
 }

llvm/test/CodeGen/AArch64/sve-uunpklo-load-uzp1-store-combine.ll

+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s | FileCheck %s
+
+target triple = "aarch64-unknown-linux-gnu"
+
+; Check that we don't try and merge uunpklo/uzp1 with a load or store if we
+; would end up creating a predicate that would be too large for the max VL.
+
+; UUNPKLO + Load
+
+define <vscale x 8 x i16> @uunpklo_i8_valid(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_i8_valid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.h, vl64
+; CHECK-NEXT:    ld1b { z0.h }, p0/z, [x0]
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 11)
+  %load = call <vscale x 16 x i8> @llvm.masked.load.nxv16i8(ptr %b, i32 2, <vscale x 16 x i1> %mask, <vscale x 16 x i8> undef)
+  %uzp = call <vscale x 8 x i16> @llvm.aarch64.sve.uunpklo.nxv8i16(<vscale x 16 x i8> %load)
+  ret <vscale x 8 x i16> %uzp
+}
+
+define <vscale x 8 x i16> @uunpklo_i8_invalid(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_i8_invalid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.b, vl128
+; CHECK-NEXT:    ld1b { z0.b }, p0/z, [x0]
+; CHECK-NEXT:    uunpklo z0.h, z0.b
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 12)
+  %load = call <vscale x 16 x i8> @llvm.masked.load.nxv16i8(ptr %b, i32 2, <vscale x 16 x i1> %mask, <vscale x 16 x i8> undef)
+  %uzp = call <vscale x 8 x i16> @llvm.aarch64.sve.uunpklo.nxv8i16(<vscale x 16 x i8> %load)
+  ret <vscale x 8 x i16> %uzp
+}
+
+define <vscale x 4 x i32> @uunpklo_i16_valid(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_i16_valid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    ld1h { z0.s }, p0/z, [x0]
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 8 x i1> @llvm.aarch64.sve.ptrue.nxv8i1(i32 10)
+  %load = call <vscale x 8 x i16> @llvm.masked.load.nxv8i16(ptr %b, i32 2, <vscale x 8 x i1> %mask, <vscale x 8 x i16> undef)
+  %uzp = call <vscale x 4 x i32> @llvm.aarch64.sve.uunpklo.nxv4i32(<vscale x 8 x i16> %load)
+  ret <vscale x 4 x i32> %uzp
+}
+
+define <vscale x 4 x i32> @uunpklo_i16_invalid(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_i16_invalid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.h, vl64
+; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0]
+; CHECK-NEXT:    uunpklo z0.s, z0.h
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 8 x i1> @llvm.aarch64.sve.ptrue.nxv8i1(i32 11)
+  %load = call <vscale x 8 x i16> @llvm.masked.load.nxv8i16(ptr %b, i32 2, <vscale x 8 x i1> %mask, <vscale x 8 x i16> undef)
+  %uzp = call <vscale x 4 x i32> @llvm.aarch64.sve.uunpklo.nxv4i32(<vscale x 8 x i16> %load)
+  ret <vscale x 4 x i32> %uzp
+}
+
+define <vscale x 2 x i64> @uunpklo_i32_valid(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_i32_valid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.d, vl16
+; CHECK-NEXT:    ld1w { z0.d }, p0/z, [x0]
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 9)
+  %load = call <vscale x 4 x i32> @llvm.masked.load.nxv4i32(ptr %b, i32 2, <vscale x 4 x i1> %mask, <vscale x 4 x i32> undef)
+  %uzp = call <vscale x 2 x i64> @llvm.aarch64.sve.uunpklo.nxv2i64(<vscale x 4 x i32> %load)
+  ret <vscale x 2 x i64> %uzp
+}
+
+define <vscale x 2 x i64> @uunpklo_i32_invalid(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_i32_invalid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
+; CHECK-NEXT:    uunpklo z0.d, z0.s
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 10)
+  %load = call <vscale x 4 x i32> @llvm.masked.load.nxv4i32(ptr %b, i32 2, <vscale x 4 x i1> %mask, <vscale x 4 x i32> undef)
+  %uzp = call <vscale x 2 x i64> @llvm.aarch64.sve.uunpklo.nxv2i64(<vscale x 4 x i32> %load)
+  ret <vscale x 2 x i64> %uzp
+}
+
+define <vscale x 2 x i64> @uunpklo_invalid_all(ptr %b) #0 {
+; CHECK-LABEL: uunpklo_invalid_all:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s
+; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0]
+; CHECK-NEXT:    uunpklo z0.d, z0.s
+; CHECK-NEXT:    ret
+  %mask = call <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 31)
+  %load = call <vscale x 4 x i32> @llvm.masked.load.nxv4i32(ptr %b, i32 2, <vscale x 4 x i1> %mask, <vscale x 4 x i32> undef)
+  %uzp = call <vscale x 2 x i64> @llvm.aarch64.sve.uunpklo.nxv2i64(<vscale x 4 x i32> %load)
+  ret <vscale x 2 x i64> %uzp
+}
+
+; UZP1 + Store
+
+define void @uzp1_i8_valid(<vscale x 8 x i16> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_i8_valid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.h, vl64
+; CHECK-NEXT:    st1b { z0.h }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 8 x i16> %a to <vscale x 16 x i8>
+  %uzp = call <vscale x 16 x i8> @llvm.aarch64.sve.uzp1.nxv16i8(<vscale x 16 x i8> %a.bc, <vscale x 16 x i8> %a.bc)
+  %mask = call <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 11)
+  call void @llvm.masked.store.nxv16i8(<vscale x 16 x i8> %uzp, ptr %b, i32 2, <vscale x 16 x i1> %mask)
+  ret void
+}
+
+define void @uzp1_i8_invalid(<vscale x 8 x i16> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_i8_invalid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.b, vl128
+; CHECK-NEXT:    uzp1 z0.b, z0.b, z0.b
+; CHECK-NEXT:    st1b { z0.b }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 8 x i16> %a to <vscale x 16 x i8>
+  %uzp = call <vscale x 16 x i8> @llvm.aarch64.sve.uzp1.nxv16i8(<vscale x 16 x i8> %a.bc, <vscale x 16 x i8> %a.bc)
+  %mask = call <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 12)
+  call void @llvm.masked.store.nxv16i8(<vscale x 16 x i8> %uzp, ptr %b, i32 2, <vscale x 16 x i1> %mask)
+  ret void
+}
+
+define void @uzp1_i16_valid(<vscale x 4 x i32> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_i16_valid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    st1h { z0.s }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 4 x i32> %a to <vscale x 8 x i16>
+  %uzp = call <vscale x 8 x i16> @llvm.aarch64.sve.uzp1.nxv8i16(<vscale x 8 x i16> %a.bc, <vscale x 8 x i16> %a.bc)
+  %mask = call <vscale x 8 x i1> @llvm.aarch64.sve.ptrue.nxv8i1(i32 10)
+  call void @llvm.masked.store.nxv8i16(<vscale x 8 x i16> %uzp, ptr %b, i32 2, <vscale x 8 x i1> %mask)
+  ret void
+}
+
+define void @uzp1_i16_invalid(<vscale x 4 x i32> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_i16_invalid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.h, vl64
+; CHECK-NEXT:    uzp1 z0.h, z0.h, z0.h
+; CHECK-NEXT:    st1h { z0.h }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 4 x i32> %a to <vscale x 8 x i16>
+  %uzp = call <vscale x 8 x i16> @llvm.aarch64.sve.uzp1.nxv8i16(<vscale x 8 x i16> %a.bc, <vscale x 8 x i16> %a.bc)
+  %mask = call <vscale x 8 x i1> @llvm.aarch64.sve.ptrue.nxv8i1(i32 11)
+  call void @llvm.masked.store.nxv8i16(<vscale x 8 x i16> %uzp, ptr %b, i32 2, <vscale x 8 x i1> %mask)
+  ret void
+}
+
+define void @uzp1_i32_valid(<vscale x 2 x i64> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_i32_valid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.d, vl16
+; CHECK-NEXT:    st1w { z0.d }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 2 x i64> %a to <vscale x 4 x i32>
+  %uzp = call <vscale x 4 x i32> @llvm.aarch64.sve.uzp1.nxv4i32(<vscale x 4 x i32> %a.bc, <vscale x 4 x i32> %a.bc)
+  %mask = call <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 9)
+  call void @llvm.masked.store.nxv4i32(<vscale x 4 x i32> %uzp, ptr %b, i32 2, <vscale x 4 x i1> %mask)
+  ret void
+}
+
+define void @uzp1_i32_invalid(<vscale x 2 x i64> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_i32_invalid:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s, vl32
+; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
+; CHECK-NEXT:    st1w { z0.s }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 2 x i64> %a to <vscale x 4 x i32>
+  %uzp = call <vscale x 4 x i32> @llvm.aarch64.sve.uzp1.nxv4i32(<vscale x 4 x i32> %a.bc, <vscale x 4 x i32> %a.bc)
+  %mask = call <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 10)
+  call void @llvm.masked.store.nxv4i32(<vscale x 4 x i32> %uzp, ptr %b, i32 2, <vscale x 4 x i1> %mask)
+  ret void
+}
+
+define void @uzp1_invalid_all(<vscale x 2 x i64> %a, ptr %b) #0 {
+; CHECK-LABEL: uzp1_invalid_all:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ptrue p0.s
+; CHECK-NEXT:    uzp1 z0.s, z0.s, z0.s
+; CHECK-NEXT:    st1w { z0.s }, p0, [x0]
+; CHECK-NEXT:    ret
+  %a.bc = bitcast <vscale x 2 x i64> %a to <vscale x 4 x i32>
+  %uzp = call <vscale x 4 x i32> @llvm.aarch64.sve.uzp1.nxv4i32(<vscale x 4 x i32> %a.bc, <vscale x 4 x i32> %a.bc)
+  %mask = call <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 31)
+  call void @llvm.masked.store.nxv4i32(<vscale x 4 x i32> %uzp, ptr %b, i32 2, <vscale x 4 x i1> %mask)
+  ret void
+}
+
+declare <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 %pattern)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.ptrue.nxv8i1(i32 %pattern)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.ptrue.nxv4i1(i32 %pattern)
+
+declare <vscale x 8 x i16> @llvm.aarch64.sve.uunpklo.nxv8i16(<vscale x 16 x i8>)
+declare <vscale x 4 x i32> @llvm.aarch64.sve.uunpklo.nxv4i32(<vscale x 8 x i16>)
+declare <vscale x 2 x i64> @llvm.aarch64.sve.uunpklo.nxv2i64(<vscale x 4 x i32>)
+
+declare <vscale x 16 x i8> @llvm.aarch64.sve.uzp1.nxv16i8(<vscale x 16 x i8>, <vscale x 16 x i8>)
+declare <vscale x 8 x i16> @llvm.aarch64.sve.uzp1.nxv8i16(<vscale x 8 x i16>, <vscale x 8 x i16>)
+declare <vscale x 4 x i32> @llvm.aarch64.sve.uzp1.nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>)
+
+declare <vscale x 16 x i8> @llvm.masked.load.nxv16i8(<vscale x 16 x i8>*, i32, <vscale x 16 x i1>, <vscale x 16 x i8>)
+declare <vscale x 8 x i16> @llvm.masked.load.nxv8i16(<vscale x 8 x i16>*, i32, <vscale x 8 x i1>, <vscale x 8 x i16>)
+declare <vscale x 4 x i32> @llvm.masked.load.nxv4i32(<vscale x 4 x i32>*, i32, <vscale x 4 x i1>, <vscale x 4 x i32>)
+
+declare void @llvm.masked.store.nxv16i8(<vscale x 16 x i8>, <vscale x 16 x i8>*, i32, <vscale x 16 x i1>)
+declare void @llvm.masked.store.nxv8i16(<vscale x 8 x i16>, <vscale x 8 x i16>*, i32, <vscale x 8 x i1>)
+declare void @llvm.masked.store.nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>*, i32, <vscale x 4 x i1>)
+
+attributes #0 = { "target-features"="+sve" vscale_range(8,0) }