[AArch64][SVE] Add support for fixed length MSCATTER/MGATHER

[bsmith]

Summary

Since gather lowering can now lower to nodes that may need expansion via
the vector legalizer, do MGATHER lowering via vector legalizer.

Additionally, as part of adding passthru support for fixed typed
gathers, fix passthru support for scalable types.

Depends on D104910

[paulwalker-arm]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

18131–18132

I guess you've moved these lowering functions because of the placement of the fixed length utility functions. I guess you could move the utility functions but I'm wondering if you can just add forward declarations to the top somewhere?

[bsmith]

• Restore file position of LowerMGATHER/LowerMSCATTER and instead add forward declarations of SVE helpers.
• Fix clang format issues

[peterwaller-arm]

Mostly nits -- looks like it needs a rebase.

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

4243

Is it intended to address this in the near future?

Nit: I initially read 'the code should be moved, once <condition>', but I think you mean, 'the code should be moved, so that it executes after <condition>'.

4329

Nit: } else if and remove a level of indent.

4336

I wonder if the undef-or-zero logic can be cleanly combined into a function with MLOAD. But maybe not. I wouldn't wonder for too long.

Thought (1): is the PassThru value actually needed for the Ops, or could it use a constant there? My thinking is that the underlying operation is invariant of its PassThru operand (hence the need for the select).

If (1) is right, then could you use an empty SDValue, which gets assigned to the thing to be 'selected', and the logic becomes if (PassThru) { insert select }.

I think this is a matter of taste so feel at liberty to ignore the suggestion. If you go for it please update MLOAD.

4442

Pondering: Why are these two isFixedLengthVector queries needed? I read: you have a fixed-vector operation, and it has scalable operands? Can that arise? How so?

llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h

246–252

This was changed in D101834 so it looks like you need a rebase since the MLOAD work.

255

Nit: Potentially confusing comment about the mechanism of the following block, because it's written in actively: "this block avoids scalarization", but actually the only thing the block can do is return false, which causes scalarization. Suggested form: "Fixed-length vectors do not use masked gather/scatter unless ..."

[peterwaller-arm]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

4243

Is it intended to address this in the near future?

I've thought about/discussed this am happy with having the FIXME here.

[bsmith]

• Simplify passthru for gathers
• Add tests for type legalization
• Clarify some comments

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

4336

This makes sense for MGATHER since the passthru value is totally ignored, however for masked_load we don't have target specific isd nodes, hence the passthru value makes it down to selection.

4442

selectGatherScatterAddrMode can swap the BasePtr/Index operands, one of which is a scalar, the other a vector. Hence here we don't know which is which, so we check them both.

llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h

246–252

It was isLegalMaskedLoadStore that was changed in D101834, not this function.

[david-arm]

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

1208–1209

Does the comment need updating to reflect gathers/scatters too?

1208–1209

Not sure if it matters, but isLegalMaskedGatherScatter explicitly excludes MVT::v1f64 as it has < 2 elements.

1209

I realise this has nothing to do with your change, but it looks really odd that we have a nested loop here where we override the VT from the outer loop. Essentially, we're registering the exact same custom operation 4 times in a row! Might be worth fixing at some point.

4320

Is it worth asserting here that Subtarget->useSVEForFixedLengthVectors() returns true?

16506

Is there to do this in a separate patch? I think it would be better if possible - I imagine it works as a standalone change where it tidies up the masked load/store tests.

[bsmith]

• Split out SETCC_MERGE_ZERO dag combine into another patch
• Fixed incorrectly nested loops during setOperationAction's
• Add extra asserts in Lowering functions
• Minor comment corrections
• Minor test changes due to other commits

[david-arm]

Could you fix all the formatting issues before submitting? Thanks!

llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp

#include "llvm/IR/ConstrainedOps.def"
   case ISD::SADDSAT:
   case ISD::UADDSAT:
   case ISD::SSUBSAT:
   case ISD::USUBSAT:
   case ISD::SSHLSAT:
   case ISD::USHLSAT:
   case ISD::FP_TO_SINT_SAT:
   case ISD::FP_TO_UINT_SAT:
+  case ISD::MGATHER:
     Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
     break;
   case ISD::SMULFIX:
   case ISD::SMULFIXSAT:
   case ISD::UMULFIX:
   case ISD::UMULFIXSAT:
   case ISD::SDIVFIX:
   case ISD::SDIVFIXSAT:

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

for (auto VT : {MVT::nxv16i1, MVT::nxv8i1, MVT::nxv4i1, MVT::nxv2i1}) {
       setOperationAction(ISD::SELECT_CC, VT, Expand);
       setOperationAction(ISD::EXTRACT_VECTOR_ELT, VT, Custom);
 
       // There are no legal MVT::nxv16f## based types.
       if (VT != MVT::nxv16i1) {
         setOperationAction(ISD::SINT_TO_FP, VT, Custom);
         setOperationAction(ISD::UINT_TO_FP, VT, Custom);
       }
+    }
 
-      // NEON doesn't support masked loads or stores, but SVE does
-      for (auto VT :
-           {MVT::v4f16, MVT::v8f16, MVT::v2f32, MVT::v4f32, MVT::v1f64,
-            MVT::v2f64, MVT::v8i8, MVT::v16i8, MVT::v4i16, MVT::v8i16,
-            MVT::v2i32, MVT::v4i32, MVT::v1i64, MVT::v2i64}) {
-        setOperationAction(ISD::MLOAD, VT, Custom);
-        setOperationAction(ISD::MSTORE, VT, Custom);
-      }
+    // NEON doesn't support masked loads/stores/gathers/scatters, but SVE does
+      setOperationAction(ISD::MGATHER, VT, Custom);
+      setOperationAction(ISD::MSCATTER, VT, Custom);
     }
 
     for (MVT VT : MVT::fp_scalable_vector_valuetypes()) {
       for (MVT InnerVT : MVT::fp_scalable_vector_valuetypes()) {
         // Avoid marking truncating FP stores as legal to prevent the
         // DAGCombiner from creating unsupported truncating stores.
         setTruncStoreAction(VT, InnerVT, Expand);
         // SVE does not have floating-point extending loads.
void AArch64TargetLowering::addTypeForFixedLengthSVE(MVT VT) {
   setOperationAction(ISD::FP_TO_UINT, VT, Custom);
   setOperationAction(ISD::FRINT, VT, Custom);
   setOperationAction(ISD::FROUND, VT, Custom);
   setOperationAction(ISD::FROUNDEVEN, VT, Custom);
   setOperationAction(ISD::FSQRT, VT, Custom);
   setOperationAction(ISD::FSUB, VT, Custom);
   setOperationAction(ISD::FTRUNC, VT, Custom);
   setOperationAction(ISD::LOAD, VT, Custom);
+  setOperationAction(ISD::MGATHER, VT, Custom);
   setOperationAction(ISD::MLOAD, VT, Custom);
+  setOperationAction(ISD::MSCATTER, VT, Custom);
   setOperationAction(ISD::MSTORE, VT, Custom);
   setOperationAction(ISD::MUL, VT, Custom);
   setOperationAction(ISD::MULHS, VT, Custom);
   setOperationAction(ISD::MULHU, VT, Custom);
   setOperationAction(ISD::OR, VT, Custom);
   setOperationAction(ISD::SDIV, VT, Custom);
   setOperationAction(ISD::SELECT, VT, Custom);
   setOperationAction(ISD::SETCC, VT, Custom);

 //===----------------------------------------------------------------------===//
 // AArch64 Lowering private implementation.
 //===----------------------------------------------------------------------===//
 
 //===----------------------------------------------------------------------===//
 // Lowering Code
 //===----------------------------------------------------------------------===//
 
+// Forward declarations of SVE fixed length lowering helpers
+static EVT getContainerForFixedLengthVector(SelectionDAG &DAG, EVT VT);
+static SDValue convertToScalableVector(SelectionDAG &DAG, EVT VT, SDValue V);
+static SDValue convertFromScalableVector(SelectionDAG &DAG, EVT VT, SDValue V);
+static SDValue convertFixedMaskToScalableVector(SDValue Mask,
+                                                SelectionDAG &DAG);
+
 /// isZerosVector - Check whether SDNode N is a zero-filled vector.
 static bool isZerosVector(const SDNode *N) {
   // Look through a bit convert.
   while (N->getOpcode() == ISD::BITCAST)
     N = N->getOperand(0).getNode();
 
   if (ISD::isConstantSplatVectorAllZeros(N))
     return true;

 //    getelementptr nullptr, <vscale x N x T> (splat(#x)) + %indices)
 // -> getelementptr #x, <vscale x N x T> %indices
 void selectGatherScatterAddrMode(SDValue &BasePtr, SDValue &Index, EVT MemVT,
                                  unsigned &Opcode, bool IsGather,
                                  SelectionDAG &DAG) {
   if (!isNullConstant(BasePtr))
     return;
 
+  // FIXME: This will not match for fixed vector type codegen as the nodes in
+  // question will have fixed<->scalable conversions around them. This should be
+  // moved to a DAG combine or complex pattern so that is executes after all of
+  // the fixed vector insert and extracts have been removed. This deficiency
+  // will result in a sub-optimal addressing mode being used, i.e. an ADD not
+  // being folded into the scatter/gather.
   ConstantSDNode *Offset = nullptr;
   if (Index.getOpcode() == ISD::ADD)
     if (auto SplatVal = DAG.getSplatValue(Index.getOperand(1))) {
       if (isa<ConstantSDNode>(SplatVal))
         Offset = cast<ConstantSDNode>(SplatVal);
       else {
         BasePtr = SplatVal;
         Index = Index->getOperand(0);

 }
 
 SDValue AArch64TargetLowering::LowerMGATHER(SDValue Op,
                                             SelectionDAG &DAG) const {
   SDLoc DL(Op);
   MaskedGatherSDNode *MGT = cast<MaskedGatherSDNode>(Op);
   assert(MGT && "Can only custom lower gather load nodes");
 
+  bool IsFixedLength = MGT->getMemoryVT().isFixedLengthVector();
+
   SDValue Index = MGT->getIndex();
   SDValue Chain = MGT->getChain();
   SDValue PassThru = MGT->getPassThru();
   SDValue Mask = MGT->getMask();
   SDValue BasePtr = MGT->getBasePtr();
   ISD::LoadExtType ExtTy = MGT->getExtensionType();
 
   ISD::MemIndexType IndexType = MGT->getIndexType();
   bool IsScaled =
       IndexType == ISD::SIGNED_SCALED || IndexType == ISD::UNSIGNED_SCALED;
   bool IsSigned =
       IndexType == ISD::SIGNED_SCALED || IndexType == ISD::SIGNED_UNSCALED;
   bool IdxNeedsExtend =
       getGatherScatterIndexIsExtended(Index) ||
       Index.getSimpleValueType().getVectorElementType() == MVT::i32;
   bool ResNeedsSignExtend = ExtTy == ISD::EXTLOAD || ExtTy == ISD::SEXTLOAD;
 
   EVT VT = PassThru.getSimpleValueType();
+  EVT IndexVT = Index.getSimpleValueType();
   EVT MemVT = MGT->getMemoryVT();
   SDValue InputVT = DAG.getValueType(MemVT);
 
   if (VT.getVectorElementType() == MVT::bf16 &&
       !static_cast<const AArch64Subtarget &>(DAG.getSubtarget()).hasBF16())
     return SDValue();
 
+  if (IsFixedLength) {
+    assert(Subtarget->useSVEForFixedLengthVectors() && "Cannot lower when not using SVE for fixed vectors");
+    IndexVT = getContainerForFixedLengthVector(DAG, IndexVT);
+    MemVT = IndexVT.changeVectorElementType(MemVT.getVectorElementType());
+    InputVT = DAG.getValueType(MemVT.changeTypeToInteger());
+  }
+
+  if (PassThru->isUndef() || isZerosVector(PassThru.getNode()))
+    PassThru = SDValue();
+
+  if (VT.isFloatingPoint() && !IsFixedLength) {
     // Handle FP data by using an integer gather and casting the result.
-  if (VT.isFloatingPoint()) {
+    if (PassThru) {
       EVT PassThruVT = getPackedSVEVectorVT(VT.getVectorElementCount());
       PassThru = getSVESafeBitCast(PassThruVT, PassThru, DAG);
+    }
     InputVT = DAG.getValueType(MemVT.changeVectorElementTypeToInteger());
   }
 
-  SDVTList VTs = DAG.getVTList(PassThru.getSimpleValueType(), MVT::Other);
+  SDVTList VTs = DAG.getVTList(IndexVT, MVT::Other);
 
   if (getGatherScatterIndexIsExtended(Index))
     Index = Index.getOperand(0);
 
   unsigned Opcode = getGatherVecOpcode(IsScaled, IsSigned, IdxNeedsExtend);
   selectGatherScatterAddrMode(BasePtr, Index, MemVT, Opcode,
                               /*isGather=*/true, DAG);
 
   if (ResNeedsSignExtend)
     Opcode = getSignExtendedGatherOpcode(Opcode);
 
-  SDValue Ops[] = {Chain, Mask, BasePtr, Index, InputVT, PassThru};
-  SDValue Gather = DAG.getNode(Opcode, DL, VTs, Ops);
+  if (IsFixedLength) {
+    if (Index.getSimpleValueType().isFixedLengthVector())
+      Index = convertToScalableVector(DAG, IndexVT, Index);
+    if (BasePtr.getSimpleValueType().isFixedLengthVector())
+      BasePtr = convertToScalableVector(DAG, IndexVT, BasePtr);
+    Mask = convertFixedMaskToScalableVector(Mask, DAG);
+  }
+
+  SDValue Ops[] = {Chain, Mask, BasePtr, Index, InputVT};
+  SDValue Result = DAG.getNode(Opcode, DL, VTs, Ops);
+  Chain = Result.getValue(1);
+
+  if (IsFixedLength) {
+    Result = convertFromScalableVector(
+        DAG, VT.changeVectorElementType(IndexVT.getVectorElementType()),
+        Result);
+    Result = DAG.getNode(ISD::TRUNCATE, DL, VT.changeTypeToInteger(), Result);
+    Result = DAG.getNode(ISD::BITCAST, DL, VT, Result);
 
-  if (VT.isFloatingPoint()) {
-    SDValue Cast = getSVESafeBitCast(VT, Gather, DAG);
-    return DAG.getMergeValues({Cast, Gather.getValue(1)}, DL);
+    if (PassThru)
+      Result = DAG.getSelect(DL, VT, MGT->getMask(), Result, PassThru);
+  } else {
+    if (PassThru)
+      Result = DAG.getSelect(DL, IndexVT, Mask, Result, PassThru);
+
+    if (VT.isFloatingPoint())
+      Result = getSVESafeBitCast(VT, Result, DAG);
   }
 
-  return Gather;
+  return DAG.getMergeValues({Result, Chain}, DL);
 }
 
 SDValue AArch64TargetLowering::LowerMSCATTER(SDValue Op,
                                              SelectionDAG &DAG) const {
   SDLoc DL(Op);
   MaskedScatterSDNode *MSC = cast<MaskedScatterSDNode>(Op);
   assert(MSC && "Can only custom lower scatter store nodes");
 
+  bool IsFixedLength = MSC->getMemoryVT().isFixedLengthVector();
+
   SDValue Index = MSC->getIndex();
   SDValue Chain = MSC->getChain();
   SDValue StoreVal = MSC->getValue();
   SDValue Mask = MSC->getMask();
   SDValue BasePtr = MSC->getBasePtr();
 
   ISD::MemIndexType IndexType = MSC->getIndexType();
   bool IsScaled =
       IndexType == ISD::SIGNED_SCALED || IndexType == ISD::UNSIGNED_SCALED;
   bool IsSigned =
       IndexType == ISD::SIGNED_SCALED || IndexType == ISD::SIGNED_UNSCALED;
   bool NeedsExtend =
       getGatherScatterIndexIsExtended(Index) ||
       Index.getSimpleValueType().getVectorElementType() == MVT::i32;
 
   EVT VT = StoreVal.getSimpleValueType();
+  EVT IndexVT = Index.getSimpleValueType();
   SDVTList VTs = DAG.getVTList(MVT::Other);
   EVT MemVT = MSC->getMemoryVT();
   SDValue InputVT = DAG.getValueType(MemVT);
 
   if (VT.getVectorElementType() == MVT::bf16 &&
       !static_cast<const AArch64Subtarget &>(DAG.getSubtarget()).hasBF16())
     return SDValue();
 
+  if (IsFixedLength) {
+    assert(Subtarget->useSVEForFixedLengthVectors() && "Cannot lower when not using SVE for fixed vectors");
+    IndexVT = getContainerForFixedLengthVector(DAG, IndexVT);
+    MemVT = IndexVT.changeVectorElementType(MemVT.getVectorElementType());
+    InputVT = DAG.getValueType(MemVT.changeTypeToInteger());
+
+    StoreVal =
+        DAG.getNode(ISD::BITCAST, DL, VT.changeTypeToInteger(), StoreVal);
+    StoreVal = DAG.getNode(
+        ISD::ANY_EXTEND, DL,
+        VT.changeVectorElementType(IndexVT.getVectorElementType()), StoreVal);
+    StoreVal = convertToScalableVector(DAG, IndexVT, StoreVal);
+  } else if (VT.isFloatingPoint()) {
     // Handle FP data by casting the data so an integer scatter can be used.
-  if (VT.isFloatingPoint()) {
     EVT StoreValVT = getPackedSVEVectorVT(VT.getVectorElementCount());
     StoreVal = getSVESafeBitCast(StoreValVT, StoreVal, DAG);
     InputVT = DAG.getValueType(MemVT.changeVectorElementTypeToInteger());
   }
 
   if (getGatherScatterIndexIsExtended(Index))
     Index = Index.getOperand(0);
 
   unsigned Opcode = getScatterVecOpcode(IsScaled, IsSigned, NeedsExtend);
   selectGatherScatterAddrMode(BasePtr, Index, MemVT, Opcode,
                               /*isGather=*/false, DAG);
 
+  if (IsFixedLength) {
+    if (Index.getSimpleValueType().isFixedLengthVector())
+      Index = convertToScalableVector(DAG, IndexVT, Index);
+    if (BasePtr.getSimpleValueType().isFixedLengthVector())
+      BasePtr = convertToScalableVector(DAG, IndexVT, BasePtr);
+    Mask = convertFixedMaskToScalableVector(Mask, DAG);
+  }
+
   SDValue Ops[] = {Chain, StoreVal, Mask, BasePtr, Index, InputVT};
   return DAG.getNode(Opcode, DL, VTs, Ops);
 }
 
 // Custom lower trunc store for v4i8 vectors, since it is promoted to v4i16.
 static SDValue LowerTruncateVectorStore(SDLoc DL, StoreSDNode *ST,
                                         EVT VT, EVT MemVT,
                                         SelectionDAG &DAG) {
SDValue AArch64TargetLowering::PerformDAGCombine(SDNode *N,
   case AArch64ISD::DUP:
     return performPostLD1Combine(N, DCI, false);
   case AArch64ISD::NVCAST:
     return performNVCASTCombine(N);
   case AArch64ISD::SPLICE:
     return performSpliceCombine(N, DAG);
   case AArch64ISD::UZP1:
     return performUzpCombine(N, DAG);
   case AArch64ISD::SETCC_MERGE_ZERO:
     return performSetccMergeZeroCombine(N, DAG);
   case AArch64ISD::GLD1_MERGE_ZERO:
   case AArch64ISD::GLD1_SCALED_MERGE_ZERO:
   case AArch64ISD::GLD1_UXTW_MERGE_ZERO:
   case AArch64ISD::GLD1_SXTW_MERGE_ZERO:
   case AArch64ISD::GLD1_UXTW_SCALED_MERGE_ZERO:
   case AArch64ISD::GLD1_SXTW_SCALED_MERGE_ZERO:
   case AArch64ISD::GLD1_IMM_MERGE_ZERO:
SDValue AArch64TargetLowering::LowerVECREDUCE_SEQ_FADD(SDValue ScalarOp,
 
   // Perform reduction.
   SDValue Rdx = DAG.getNode(AArch64ISD::FADDA_PRED, DL, ContainerVT,
                             Pg, AccOp, VecOp);
 
   return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ResVT, Rdx, Zero);
 }
 
 SDValue AArch64TargetLowering::LowerPredReductionToSVE(SDValue ReduceOp,
                                                        SelectionDAG &DAG) const {
   SDLoc DL(ReduceOp);
   SDValue Op = ReduceOp.getOperand(0);
   EVT OpVT = Op.getValueType();
   EVT VT = ReduceOp.getValueType();
 
   if (!OpVT.isScalableVector() || OpVT.getVectorElementType() != MVT::i1)
     return SDValue();
 

llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h

bool isLegalMaskedLoad(Type *DataType, Align Alignment) {
     return isLegalMaskedLoadStore(DataType, Alignment);
   }
 
   bool isLegalMaskedStore(Type *DataType, Align Alignment) {
     return isLegalMaskedLoadStore(DataType, Alignment);
   }
 
   bool isLegalMaskedGatherScatter(Type *DataType) const {
-    if (isa<FixedVectorType>(DataType) || !ST->hasSVE())
+    if (!ST->hasSVE())
+      return false;
+
+    // For fixed vectors, scalarize if not using SVE for them.
+    auto *DataTypeFVTy = dyn_cast<FixedVectorType>(DataType);
+    if (DataTypeFVTy && (!ST->useSVEForFixedLengthVectors() ||
+                         DataTypeFVTy->getNumElements() < 2))
       return false;
 
     return isLegalElementTypeForSVE(DataType->getScalarType());
   }
 
   bool isLegalMaskedGather(Type *DataType, Align Alignment) const {
     return isLegalMaskedGatherScatter(DataType);
   }
   bool isLegalMaskedScatter(Type *DataType, Align Alignment) const {
     return isLegalMaskedGatherScatter(DataType);
   }

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

+; RUN: llc -aarch64-sve-vector-bits-min=128  -asm-verbose=0 < %s | FileCheck %s -check-prefix=NO_SVE
+; RUN: llc -aarch64-sve-vector-bits-min=256  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_EQ_256
+; RUN: llc -aarch64-sve-vector-bits-min=384  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK
+; RUN: llc -aarch64-sve-vector-bits-min=512  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=640  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=768  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=896  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1024 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1152 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1280 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1408 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1536 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1664 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1792 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1920 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=2048 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_2048,VBITS_GE_1024,VBITS_GE_512
+
+target triple = "aarch64-unknown-linux-gnu"
+
+; Don't use SVE when its registers are no bigger than NEON.
+; NO_SVE-NOT: ptrue
+
+;
+; LD1B
+;
+
+define void @masked_gather_v2i8(<2 x i8>* %a, <2 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2i8:
+; CHECK: ldrb [[VALS_LO:w[0-9]+]], [x0]
+; CHECK-NEXT: ldrb [[VALS_HI:w[0-9]+]], [x0, #1]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: fmov s[[VALS:[0-9]+]], [[VALS_LO]]
+; CHECK-NEXT: mov v[[VALS]].s[1], [[VALS_HI]]
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ld1sb { z[[RES:[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: xtn v[[XTN:[0-9]+]].2s, v[[RES]].2d
+; CHECK-NEXT: mov [[RES_HI:w[0-9]+]], v[[XTN]].s[1]
+; CHECK-NEXT: fmov [[RES_LO:w[0-9]+]], s[[XTN]]
+; CHECK-NEXT: strb [[RES_LO]], [x0]
+; CHECK-NEXT: strb [[RES_HI]], [x0, #1]
+; CHECK-NEXT: ret
+  %cval = load <2 x i8>, <2 x i8>* %a
+  %ptrs = load <2 x i8*>, <2 x i8*>* %b
+  %mask = icmp eq <2 x i8> %cval, zeroinitializer
+  %vals = call <2 x i8> @llvm.masked.gather.v2i8(<2 x i8*> %ptrs, i32 8, <2 x i1> %mask, <2 x i8> undef)
+  store <2 x i8> %vals, <2 x i8>* %a
+  ret void
+}
+
+define void @masked_gather_v4i8(<4 x i8>* %a, <4 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4i8:
+; CHECK: ldr s[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; CHECK-NEXT: ushll [[SHL:v[0-9]+]].8h, v[[VALS]].8b, #0
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].4h, [[SHL]].4h, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; CHECK-NEXT: ld1sb { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; CHECK-NEXT: uzp1 z[[UZP2:[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; CHECK-NEXT: uzp1 v[[UZP3:[0-9]+]].8b, v[[UZP2]].8b, v[[UZP2]].8b
+; CHECK-NEXT: str s[[UZP3]], [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_v8i8(<8 x i8>* %a, <8 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8i8:
+; VBITS_EQ_256: ldr d[[VALS:[0-9]+]], [x0]
+; VBITS_EQ_256-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: add x8, x1, #32
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_EQ_256-NEXT: cmeq [[ZMSK:v[0-9]+]].8b, v[[VALS]].8b, #0
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG0]]/z, [x8]
+; VBITS_EQ_256-NEXT: zip2 [[VAL_HI:v[0-9]+]].8b, [[ZMSK]].8b, v[[VALS]].8b
+; VBITS_EQ_256-NEXT: zip1 [[VAL_LO:v[0-9]+]].8b, [[ZMSK]].8b, v[[VALS]].8b
+; VBITS_EQ_256-NEXT: shl [[SHL_HI:v[0-9]+]].4h, [[VAL_HI]].4h, #8
+; VBITS_EQ_256-NEXT: shl [[SHL_LO:v[0-9]+]].4h, [[VAL_LO]].4h, #8
+; VBITS_EQ_256-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; VBITS_EQ_256-NEXT: sshr v[[SSHR_HI:[0-9]+]].4h, [[SHL_HI]].4h, #8
+; VBITS_EQ_256-NEXT: sshr v[[SSHR_LO:[0-9]+]].4h, [[SHL_LO]].4h, #8
+; VBITS_EQ_256-NEXT: cmpne [[MASK_HI:p[0-9]+]].h, [[PG1]]/z, z[[SSHR_HI]].h, #0
+; VBITS_EQ_256-NEXT: cmpne [[MASK_LO:p[0-9]+]].h, [[PG1]]/z, z[[SSHR_LO]].h, #0
+; VBITS_EQ_256-NEXT: ld1sb { [[RES_HI:z[0-9]+]].d }, [[MASK_HI]]/z, {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: ld1sb { [[RES_LO:z[0-9]+]].d }, [[MASK_LO]]/z, {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-NEXT: uzp1 [[UZP1_HI:z[0-9]+]].s, [[RES_HI]].s, [[RES_HI]].s
+; VBITS_EQ_256-NEXT: uzp1 [[UZP1_LO:z[0-9]+]].s, [[RES_LO]].s, [[RES_LO]].s
+; VBITS_EQ_256-NEXT: uzp1 z[[UZP2_HI:[0-9]+]].h, [[UZP1_HI]].h, [[UZP1_HI]].h
+; VBITS_EQ_256-NEXT: uzp1 z[[UZP2_LO:[0-9]+]].h, [[UZP1_LO]].h, [[UZP1_LO]].h
+; VBITS_EQ_256-NEXT: uzp1 v[[UZP3:[0-9]+]].8b, v[[UZP2_LO]].8b, v[[UZP2_HI]].8b
+; VBITS_EQ_256-NEXT: str d[[UZP3]], [x0]
+; VBITS_EQ_256-NEXT: ret
+
+; VBITS_GE_512: ldr d[[VALS:[0-9]+]], [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].b, vl8
+; VBITS_GE_512-NEXT: cmeq v[[CMP:[0-9]+]].8b, v[[VALS]].8b, #0
+; VBITS_GE_512-NEXT: cmpne [[MASK:p[0-9]+]].b, [[PG1]]/z, z[[CMP]].b, #0
+; VBITS_GE_512-NEXT: ld1b { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_512-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_512-NEXT: uzp1 z[[UZP3:[0-9]+]].b, [[UZP2]].b, [[UZP2]].b
+; VBITS_GE_512-NEXT: str d[[UZP3]], [x0]
+; VBITS_GE_512-NEXT: ret
+  %cval = load <8 x i8>, <8 x i8>* %a
+  %ptrs = load <8 x i8*>, <8 x i8*>* %b
+  %mask = icmp eq <8 x i8> %cval, zeroinitializer
+  %vals = call <8 x i8> @llvm.masked.gather.v8i8(<8 x i8*> %ptrs, i32 8, <8 x i1> %mask, <8 x i8> undef)
+  store <8 x i8> %vals, <8 x i8>* %a
+  ret void
+}
+
+define void @masked_gather_v16i8(<16 x i8>* %a, <16 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v16i8:
+; VBITS_GE_1024: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG0:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].b, vl16
+; VBITS_GE_1024-NEXT: cmeq v[[CMP:[0-9]+]].16b, v[[VALS]].16b, #0
+; VBITS_GE_1024-NEXT: cmpne [[MASK:p[0-9]+]].b, [[PG1]]/z, z[[CMP]].b, #0
+; VBITS_GE_1024-NEXT: ld1b { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_1024-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_1024-NEXT: uzp1 z[[UZP3:[0-9]+]].b, [[UZP2]].b, [[UZP2]].b
+; VBITS_GE_1024-NEXT: str q[[UZP3]], [x0]
+; VBITS_GE_1024-NEXT: ret
+  %cval = load <16 x i8>, <16 x i8>* %a
+  %ptrs = load <16 x i8*>, <16 x i8*>* %b
+  %mask = icmp eq <16 x i8> %cval, zeroinitializer
+  %vals = call <16 x i8> @llvm.masked.gather.v16i8(<16 x i8*> %ptrs, i32 8, <16 x i1> %mask, <16 x i8> undef)
+  store <16 x i8> %vals, <16 x i8>* %a
+  ret void
+}
+
+define void @masked_gather_v32i8(<32 x i8>* %a, <32 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v32i8:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].b, vl32
+; VBITS_GE_2048-NEXT: ld1b { [[VALS:z[0-9]+]].b }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].b, [[PG0]]/z, [[VALS]].b, #0
+; VBITS_GE_2048-NEXT: ld1b { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_2048-NEXT: uzp1 [[UZP3:z[0-9]+]].b, [[UZP2]].b, [[UZP2]].b
+; VBITS_GE_2048-NEXT: st1b { [[UZP3]].b }, [[PG0]], [x0]
+; VBITS_GE_2048-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
+}
+
+;
+; LD1H
+;
+
+define void @masked_gather_v2i16(<2 x i16>* %a, <2 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2i16:
+; CHECK: ldrh [[VALS_LO:w[0-9]+]], [x0]
+; CHECK-NEXT: ldrh [[VALS_HI:w[0-9]+]], [x0, #2]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: fmov s[[VALS:[0-9]+]], [[VALS_LO]]
+; CHECK-NEXT: mov v[[VALS]].s[1], [[VALS_HI]]
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ld1sh { z[[RES:[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: xtn v[[XTN:[0-9]+]].2s, v[[RES]].2d
+; CHECK-NEXT: mov [[RES_HI:w[0-9]+]], v[[XTN]].s[1]
+; CHECK-NEXT: fmov [[RES_LO:w[0-9]+]], s[[XTN]]
+; CHECK-NEXT: strh [[RES_LO]], [x0]
+; CHECK-NEXT: strh [[RES_HI]], [x0, #2]
+; CHECK-NEXT: ret
+  %cval = load <2 x i16>, <2 x i16>* %a
+  %ptrs = load <2 x i16*>, <2 x i16*>* %b
+  %mask = icmp eq <2 x i16> %cval, zeroinitializer
+  %vals = call <2 x i16> @llvm.masked.gather.v2i16(<2 x i16*> %ptrs, i32 8, <2 x i1> %mask, <2 x i16> undef)
+  store <2 x i16> %vals, <2 x i16>* %a
+  ret void
+}
+
+define void @masked_gather_v4i16(<4 x i16>* %a, <4 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4i16:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].4h, v[[VALS]].4h, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; CHECK-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; CHECK-NEXT: uzp1 z[[UZP2:[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; CHECK-NEXT: str d[[UZP2]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <4 x i16>, <4 x i16>* %a
+  %ptrs = load <4 x i16*>, <4 x i16*>* %b
+  %mask = icmp eq <4 x i16> %cval, zeroinitializer
+  %vals = call <4 x i16> @llvm.masked.gather.v4i16(<4 x i16*> %ptrs, i32 8, <4 x i1> %mask, <4 x i16> undef)
+  store <4 x i16> %vals, <4 x i16>* %a
+  ret void
+}
+
+define void @masked_gather_v8i16(<8 x i16>* %a, <8 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8i16:
+; VBITS_EQ_256: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_EQ_256-NEXT: add x8, x1, #32
+; VBITS_EQ_256-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG0]]/z, [x8]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_EQ_256-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; VBITS_EQ_256-NEXT: cmeq v[[ZMSK:[0-9]+]].8h, v[[VALS]].8h, #0
+; VBITS_EQ_256-DAG: cmpne [[MASK_LO:p[0-9]+]].h, [[PG1]]/z, z[[ZMSK]].h, #0
+; VBITS_EQ_256-DAG: ext v[[ZEXT:[0-9]+]].16b, v[[ZMSK]].16b, v[[ZMSK]].16b, #8
+; VBITS_EQ_256-DAG: cmpne [[MASK_HI:p[0-9]+]].h, [[PG1]]/z, z[[ZEXT]].h, #0
+; VBITS_EQ_256-DAG: ld1h { [[RES_LO:z[0-9]+]].d }, [[MASK_LO]]/z, {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-DAG: ld1h { [[RES_HI:z[0-9]+]].d }, [[MASK_HI]]/z, {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: uzp1 [[UZP1_LO:z[0-9]+]].s, [[RES_LO]].s, [[RES_LO]].s
+; VBITS_EQ_256-NEXT: uzp1 z[[UZP2_LO:[0-9]+]].h, [[UZP1_LO]].h, [[UZP1_LO]].h
+; VBITS_EQ_256-NEXT: uzp1 [[UZP1_HI:z[0-9]+]].s, [[RES_HI]].s, [[RES_HI]].s
+; VBITS_EQ_256-NEXT: uzp1 z[[UZP2_HI:[0-9]+]].h, [[UZP1_HI]].h, [[UZP1_HI]].h
+; VBITS_EQ_256-NEXT: mov v[[UZP2_LO]].d[1], v[[UZP2_HI]].d[0]
+; VBITS_EQ_256-NEXT: str q[[UZP2_LO]], [x0]
+; VBITS_EQ_256-NEXT: ret
+
+; VBITS_GE_512: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].h, vl8
+; VBITS_GE_512-NEXT: cmeq v[[CMP:[0-9]+]].8h, v[[VALS]].8h, #0
+; VBITS_GE_512-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; VBITS_GE_512-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_512-NEXT: uzp1 z[[UZP2:[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_512-NEXT: str q[[UZP2]], [x0]
+; VBITS_GE_512-NEXT: ret
+  %cval = load <8 x i16>, <8 x i16>* %a
+  %ptrs = load <8 x i16*>, <8 x i16*>* %b
+  %mask = icmp eq <8 x i16> %cval, zeroinitializer
+  %vals = call <8 x i16> @llvm.masked.gather.v8i16(<8 x i16*> %ptrs, i32 8, <8 x i1> %mask, <8 x i16> undef)
+  store <8 x i16> %vals, <8 x i16>* %a
+  ret void
+}
+
+define void @masked_gather_v16i16(<16 x i16>* %a, <16 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v16i16:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].h, vl16
+; VBITS_GE_1024-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: cmpeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, #0
+; VBITS_GE_1024-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_1024-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_1024-NEXT: st1h { [[UZP2]].h }, [[PG0]], [x0]
+; VBITS_GE_1024-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) #0 {
+; CHECK-LABEL: masked_gather_v32i16:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, #0
+; VBITS_GE_2048-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_2048-NEXT: st1h { [[UZP2]].h }, [[PG0]], [x0]
+; VBITS_GE_2048-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
+}
+
+;
+; LD1W
+;
+
+define void @masked_gather_v2i32(<2 x i32>* %a, <2 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2i32:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ld1w { z[[RES:[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: xtn v[[XTN:[0-9]+]].2s, v[[RES]].2d
+; CHECK-NEXT: str d[[XTN]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <2 x i32>, <2 x i32>* %a
+  %ptrs = load <2 x i32*>, <2 x i32*>* %b
+  %mask = icmp eq <2 x i32> %cval, zeroinitializer
+  %vals = call <2 x i32> @llvm.masked.gather.v2i32(<2 x i32*> %ptrs, i32 8, <2 x i1> %mask, <2 x i32> undef)
+  store <2 x i32> %vals, <2 x i32>* %a
+  ret void
+}
+
+define void @masked_gather_v4i32(<4 x i32>* %a, <4 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4i32:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].s, vl4
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].4s, v[[VALS]].4s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG1]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: uzp1 z[[UZP:[0-9]+]].s, [[RES]].s, [[RES]].s
+; CHECK-NEXT: str q[[UZP]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <4 x i32>, <4 x i32>* %a
+  %ptrs = load <4 x i32*>, <4 x i32*>* %b
+  %mask = icmp eq <4 x i32> %cval, zeroinitializer
+  %vals = call <4 x i32> @llvm.masked.gather.v4i32(<4 x i32*> %ptrs, i32 8, <4 x i1> %mask, <4 x i32> undef)
+  store <4 x i32> %vals, <4 x i32>* %a
+  ret void
+}
+
+define void @masked_gather_v8i32(<8 x i32>* %a, <8 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8i32:
+; VBITS_EQ_256: ptrue [[PG0:p[0-9]+]].s, vl8
+; VBITS_EQ_256-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_EQ_256-NEXT: ptrue [[PG1:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: add x8, x1, #32
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG1]]/z, [x8]
+; VBITS_EQ_256-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_EQ_256-NEXT: mov x8, sp
+; VBITS_EQ_256-NEXT: mov [[MONE:z[0-9]+]].s, p1/z, #-1
+; VBITS_EQ_256-NEXT: st1w  { [[MONE]].s }, [[PG0]], [x8]
+; VBITS_EQ_256-NEXT: ldr q[[CMP_HI:[0-9]+]], [sp, #16]
+; VBITS_EQ_256-NEXT: ptrue [[PG2:p[0-9]+]].s, vl4
+; VBITS_EQ_256-NEXT: cmpne [[MASK_HI:p[0-9]+]].s, [[PG2]]/z, z[[CMP_HI]].s, #0
+; VBITS_EQ_256-NEXT: ld1w { [[RES_HI:z[0-9]+]].d }, [[MASK_HI]]/z, {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: ldr q[[CMP_LO:[0-9]+]], [sp]
+; VBITS_EQ_256-NEXT: uzp1 [[UZP_HI:z[0-9]+]].s, [[RES_HI]].s, [[RES_HI]].s
+; VBITS_EQ_256-NEXT: cmpne [[MASK_LO:p[0-9]+]].s, [[PG2]]/z, z[[CMP_LO]].s, #0
+; VBITS_EQ_256-NEXT: ld1w { [[RES_LO:z[0-9]+]].d }, [[MASK_LO]]/z, {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-NEXT: uzp1 [[UZP_LO:z[0-9]+]].s, [[RES_LO]].s, [[RES_LO]].s
+; VBITS_EQ_256-NEXT: splice [[RES:z[0-9]+]].s, [[PG1]], [[RES_LO]].s, [[RES_HI]].s
+; VBITS_EQ_256-NEXT: st1w { [[RES]].s }, [[PG0]], [x0]
+
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].s, vl8
+; VBITS_GE_512-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_512-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_GE_512-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_512-NEXT: st1w { [[UZP]].s }, [[PG0]], [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) #0 {
+; CHECK-LABEL: masked_gather_v16i32:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].s, vl16
+; VBITS_GE_1024-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_GE_1024-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_1024-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_1024-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) #0 {
+; CHECK-LABEL: masked_gather_v32i32:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-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
+}
+
+;
+; LD1D
+;
+
+; Scalarize 1 x i64 gathers
+define void @masked_gather_v1i64(<1 x i64>* %a, <1 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v1i64:
+; CHECK-NOT: ptrue
+  %cval = load <1 x i64>, <1 x i64>* %a
+  %ptrs = load <1 x i64*>, <1 x i64*>* %b
+  %mask = icmp eq <1 x i64> %cval, zeroinitializer
+  %vals = call <1 x i64> @llvm.masked.gather.v1i64(<1 x i64*> %ptrs, i32 8, <1 x i1> %mask, <1 x i64> undef)
+  store <1 x i64> %vals, <1 x i64>* %a
+  ret void
+}
+
+define void @masked_gather_v2i64(<2 x i64>* %a, <2 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2i64:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl2
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2d, v[[VALS]].2d, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].d, [[PG0]]/z, z[[CMP]].d, #0
+; CHECK-NEXT: ld1d { z[[RES:[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: str q[[RES]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <2 x i64>, <2 x i64>* %a
+  %ptrs = load <2 x i64*>, <2 x i64*>* %b
+  %mask = icmp eq <2 x i64> %cval, zeroinitializer
+  %vals = call <2 x i64> @llvm.masked.gather.v2i64(<2 x i64*> %ptrs, i32 8, <2 x i1> %mask, <2 x i64> undef)
+  store <2 x i64> %vals, <2 x i64>* %a
+  ret void
+}
+
+define void @masked_gather_v4i64(<4 x i64>* %a, <4 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4i64:
+; CHECK: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; CHECK-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <4 x i64>, <4 x i64>* %a
+  %ptrs = load <4 x i64*>, <4 x i64*>* %b
+  %mask = icmp eq <4 x i64> %cval, zeroinitializer
+  %vals = call <4 x i64> @llvm.masked.gather.v4i64(<4 x i64*> %ptrs, i32 8, <4 x i1> %mask, <4 x i64> undef)
+  store <4 x i64> %vals, <4 x i64>* %a
+  ret void
+}
+
+define void @masked_gather_v8i64(<8 x i64>* %a, <8 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8i64:
+; VBITS_EQ_256: add x8, x0, #32
+; VBITS_EQ_256-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: add x9, x1, #32
+; VBITS_EQ_256-NEXT: ld1d { [[VALS_HI:z[0-9]+]].d }, [[PG0]]/z, [x8]
+; VBITS_EQ_256-NEXT: ld1d { [[VALS_LO:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG0]]/z, [x9]
+; VBITS_EQ_256-NEXT: cmpeq [[MASK_HI:p[0-9]+]].d, [[PG0]]/z, [[VALS_HI]].d, #0
+; VBITS_EQ_256-NEXT: cmpeq [[MASK_LO:p[0-9]+]].d, [[PG0]]/z, [[VALS_LO]].d, #0
+; VBITS_EQ_256-NEXT: ld1d { [[RES_HI:z[0-9]+]].d }, [[MASK_HI]]/z, {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: ld1d { [[RES_LO:z[0-9]+]].d }, [[MASK_LO]]/z, {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-NEXT: st1d { [[RES_HI]].d }, [[PG0]], [x8]
+; VBITS_EQ_256-NEXT: st1d { [[RES_LO]].d }, [[PG0]], [x0]
+; VBITS_EQ_256-NEXT: ret
+
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; VBITS_GE_512-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; VBITS_GE_512-NEXT: ret
+  %cval = load <8 x i64>, <8 x i64>* %a
+  %ptrs = load <8 x i64*>, <8 x i64*>* %b
+  %mask = icmp eq <8 x i64> %cval, zeroinitializer
+  %vals = call <8 x i64> @llvm.masked.gather.v8i64(<8 x i64*> %ptrs, i32 8, <8 x i1> %mask, <8 x i64> undef)
+  store <8 x i64> %vals, <8 x i64>* %a
+  ret void
+}
+
+define void @masked_gather_v16i64(<16 x i64>* %a, <16 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v16i64:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_1024-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; VBITS_GE_1024-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; VBITS_GE_1024-NEXT: ret
+  %cval = load <16 x i64>, <16 x i64>* %a
+  %ptrs = load <16 x i64*>, <16 x i64*>* %b
+  %mask = icmp eq <16 x i64> %cval, zeroinitializer
+  %vals = call <16 x i64> @llvm.masked.gather.v16i64(<16 x i64*> %ptrs, i32 8, <16 x i1> %mask, <16 x i64> undef)
+  store <16 x i64> %vals, <16 x i64>* %a
+  ret void
+}
+
+define void @masked_gather_v32i64(<32 x i64>* %a, <32 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v32i64:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; VBITS_GE_2048-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cval = load <32 x i64>, <32 x i64>* %a
+  %ptrs = load <32 x i64*>, <32 x i64*>* %b
+  %mask = icmp eq <32 x i64> %cval, zeroinitializer
+  %vals = call <32 x i64> @llvm.masked.gather.v32i64(<32 x i64*> %ptrs, i32 8, <32 x i1> %mask, <32 x i64> undef)
+  store <32 x i64> %vals, <32 x i64>* %a
+  ret void
+}
+
+;
+; LD1H (float)
+;
+
+define void @masked_gather_v2f16(<2 x half>* %a, <2 x half*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2f16:
+; CHECK: ldr s[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: movi d[[ZERO:[0-9]+]], #0000000000000000
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].h, vl4
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].4h, v[[VALS]].4h, #0.0
+; CHECK-NEXT: umov w8, v[[CMP]].h[0]
+; CHECK-NEXT: umov w9, v[[CMP]].h[1]
+; CHECK-NEXT: fmov s[[CMP]], w8
+; CHECK-NEXT: mov v[[CMP]].s[1], w9
+; CHECK-NEXT: shl v[[CMP]].2s, v[[CMP]].2s, #16
+; CHECK-NEXT: sshr v[[CMP]].2s, v[[CMP]].2s, #16
+; CHECK-NEXT: fmov w9, s[[CMP]]
+; CHECK-NEXT: mov w8, v[[CMP]].s[1]
+; CHECK-NEXT: mov v[[NCMP:[0-9]+]].h[0], w9
+; CHECK-NEXT: mov v[[NCMP]].h[1], w8
+; CHECK-NEXT: shl v[[SHL:[0-9]+]].4h, v[[NCMP]].4h, #15
+; CHECK-NEXT: sshr v[[SHL]].4h, v[[SHL]].4h, #15
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG0]]/z, z[[SHL]].h, #0
+; CHECK-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; CHECK-NEXT: uzp1 z[[UZP2:[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; CHECK-NEXT: str s[[UZP2]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <2 x half>, <2 x half>* %a
+  %ptrs = load <2 x half*>, <2 x half*>* %b
+  %mask = fcmp oeq <2 x half> %cval, zeroinitializer
+  %vals = call <2 x half> @llvm.masked.gather.v2f16(<2 x half*> %ptrs, i32 8, <2 x i1> %mask, <2 x half> undef)
+  store <2 x half> %vals, <2 x half>* %a
+  ret void
+}
+
+define void @masked_gather_v4f16(<4 x half>* %a, <4 x half*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4f16:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].4h, v[[VALS]].4h, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; CHECK-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; CHECK-NEXT: uzp1 z[[UZP2:[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; CHECK-NEXT: str d[[UZP2]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <4 x half>, <4 x half>* %a
+  %ptrs = load <4 x half*>, <4 x half*>* %b
+  %mask = fcmp oeq <4 x half> %cval, zeroinitializer
+  %vals = call <4 x half> @llvm.masked.gather.v4f16(<4 x half*> %ptrs, i32 8, <4 x i1> %mask, <4 x half> undef)
+  store <4 x half> %vals, <4 x half>* %a
+  ret void
+}
+
+define void @masked_gather_v8f16(<8 x half>* %a, <8 x half*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8f16:
+; VBITS_GE_512: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].h, vl8
+; VBITS_GE_512-NEXT: fcmeq v[[CMP:[0-9]+]].8h, v[[VALS]].8h, #0
+; VBITS_GE_512-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; VBITS_GE_512-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_512-NEXT: uzp1 z[[UZP2:[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_512-NEXT: str q[[UZP2]], [x0]
+; VBITS_GE_512-NEXT: ret
+  %cval = load <8 x half>, <8 x half>* %a
+  %ptrs = load <8 x half*>, <8 x half*>* %b
+  %mask = fcmp oeq <8 x half> %cval, zeroinitializer
+  %vals = call <8 x half> @llvm.masked.gather.v8f16(<8 x half*> %ptrs, i32 8, <8 x i1> %mask, <8 x half> undef)
+  store <8 x half> %vals, <8 x half>* %a
+  ret void
+}
+
+define void @masked_gather_v16f16(<16 x half>* %a, <16 x half*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v16f16:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].h, vl16
+; VBITS_GE_1024-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_1024-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]].h
+; VBITS_GE_1024-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_1024-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_1024-NEXT: st1h { [[UZP2]].h }, [[PG0]], [x0]
+; VBITS_GE_1024-NEXT: ret
+  %cval = load <16 x half>, <16 x half>* %a
+  %ptrs = load <16 x half*>, <16 x half*>* %b
+  %mask = fcmp oeq <16 x half> %cval, zeroinitializer
+  %vals = call <16 x half> @llvm.masked.gather.v16f16(<16 x half*> %ptrs, i32 8, <16 x i1> %mask, <16 x half> undef)
+  store <16 x half> %vals, <16 x half>* %a
+  ret void
+}
+
+define void @masked_gather_v32f16(<32 x half>* %a, <32 x half*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v32f16:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]].h
+; VBITS_GE_2048-NEXT: ld1h { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP1:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: uzp1 [[UZP2:z[0-9]+]].h, [[UZP1]].h, [[UZP1]].h
+; VBITS_GE_2048-NEXT: st1h { [[UZP2]].h }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cval = load <32 x half>, <32 x half>* %a
+  %ptrs = load <32 x half*>, <32 x half*>* %b
+  %mask = fcmp oeq <32 x half> %cval, zeroinitializer
+  %vals = call <32 x half> @llvm.masked.gather.v32f16(<32 x half*> %ptrs, i32 8, <32 x i1> %mask, <32 x half> undef)
+  store <32 x half> %vals, <32 x half>* %a
+  ret void
+}
+
+;
+; LD1W (float)
+;
+
+define void @masked_gather_v2f32(<2 x float>* %a, <2 x float*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2f32:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ld1w { z[[RES:[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: xtn v[[XTN:[0-9]+]].2s, v[[RES]].2d
+; CHECK-NEXT: str d[[XTN]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <2 x float>, <2 x float>* %a
+  %ptrs = load <2 x float*>, <2 x float*>* %b
+  %mask = fcmp oeq <2 x float> %cval, zeroinitializer
+  %vals = call <2 x float> @llvm.masked.gather.v2f32(<2 x float*> %ptrs, i32 8, <2 x i1> %mask, <2 x float> undef)
+  store <2 x float> %vals, <2 x float>* %a
+  ret void
+}
+
+define void @masked_gather_v4f32(<4 x float>* %a, <4 x float*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4f32:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].s, vl4
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].4s, v[[VALS]].4s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG1]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: uzp1 z[[UZP:[0-9]+]].s, [[RES]].s, [[RES]].s
+; CHECK-NEXT: str q[[UZP]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <4 x float>, <4 x float>* %a
+  %ptrs = load <4 x float*>, <4 x float*>* %b
+  %mask = fcmp oeq <4 x float> %cval, zeroinitializer
+  %vals = call <4 x float> @llvm.masked.gather.v4f32(<4 x float*> %ptrs, i32 8, <4 x i1> %mask, <4 x float> undef)
+  store <4 x float> %vals, <4 x float>* %a
+  ret void
+}
+
+define void @masked_gather_v8f32(<8 x float>* %a, <8 x float*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8f32:
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].s, vl8
+; VBITS_GE_512-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_512-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_512-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]].s
+; VBITS_GE_512-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_512-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_512-NEXT: ret
+  %cval = load <8 x float>, <8 x float>* %a
+  %ptrs = load <8 x float*>, <8 x float*>* %b
+  %mask = fcmp oeq <8 x float> %cval, zeroinitializer
+  %vals = call <8 x float> @llvm.masked.gather.v8f32(<8 x float*> %ptrs, i32 8, <8 x i1> %mask, <8 x float> undef)
+  store <8 x float> %vals, <8 x float>* %a
+  ret void
+}
+
+define void @masked_gather_v16f32(<16 x float>* %a, <16 x float*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v16f32:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].s, vl16
+; VBITS_GE_1024-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_1024-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]].s
+; VBITS_GE_1024-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_1024-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_1024-NEXT: ret
+  %cval = load <16 x float>, <16 x float>* %a
+  %ptrs = load <16 x float*>, <16 x float*>* %b
+  %mask = fcmp oeq <16 x float> %cval, zeroinitializer
+  %vals = call <16 x float> @llvm.masked.gather.v16f32(<16 x float*> %ptrs, i32 8, <16 x i1> %mask, <16 x float> undef)
+  store <16 x float> %vals, <16 x float>* %a
+  ret void
+}
+
+define void @masked_gather_v32f32(<32 x float>* %a, <32 x float*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v32f32:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]].s
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cval = load <32 x float>, <32 x float>* %a
+  %ptrs = load <32 x float*>, <32 x float*>* %b
+  %mask = fcmp oeq <32 x float> %cval, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> undef)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+;
+; LD1D (float)
+;
+
+; Scalarize 1 x double gathers
+define void @masked_gather_v1f64(<1 x double>* %a, <1 x double*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v1f64:
+; CHECK-NOT: ptrue
+  %cval = load <1 x double>, <1 x double>* %a
+  %ptrs = load <1 x double*>, <1 x double*>* %b
+  %mask = fcmp oeq <1 x double> %cval, zeroinitializer
+  %vals = call <1 x double> @llvm.masked.gather.v1f64(<1 x double*> %ptrs, i32 8, <1 x i1> %mask, <1 x double> undef)
+  store <1 x double> %vals, <1 x double>* %a
+  ret void
+}
+
+define void @masked_gather_v2f64(<2 x double>* %a, <2 x double*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v2f64:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl2
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].2d, v[[VALS]].2d, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].d, [[PG0]]/z, z[[CMP]].d, #0
+; CHECK-NEXT: ld1d { z[[RES:[0-9]+]].d }, [[MASK]]/z, [z[[PTRS]].d]
+; CHECK-NEXT: str q[[RES]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <2 x double>, <2 x double>* %a
+  %ptrs = load <2 x double*>, <2 x double*>* %b
+  %mask = fcmp oeq <2 x double> %cval, zeroinitializer
+  %vals = call <2 x double> @llvm.masked.gather.v2f64(<2 x double*> %ptrs, i32 8, <2 x i1> %mask, <2 x double> undef)
+  store <2 x double> %vals, <2 x double>* %a
+  ret void
+}
+
+define void @masked_gather_v4f64(<4 x double>* %a, <4 x double*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v4f64:
+; CHECK: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; CHECK-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]].d
+; CHECK-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; CHECK-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; CHECK-NEXT: ret
+  %cval = load <4 x double>, <4 x double>* %a
+  %ptrs = load <4 x double*>, <4 x double*>* %b
+  %mask = fcmp oeq <4 x double> %cval, zeroinitializer
+  %vals = call <4 x double> @llvm.masked.gather.v4f64(<4 x double*> %ptrs, i32 8, <4 x i1> %mask, <4 x double> undef)
+  store <4 x double> %vals, <4 x double>* %a
+  ret void
+}
+
+define void @masked_gather_v8f64(<8 x double>* %a, <8 x double*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v8f64:
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; VBITS_GE_512-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]].d
+; VBITS_GE_512-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; VBITS_GE_512-NEXT: ret
+  %cval = load <8 x double>, <8 x double>* %a
+  %ptrs = load <8 x double*>, <8 x double*>* %b
+  %mask = fcmp oeq <8 x double> %cval, zeroinitializer
+  %vals = call <8 x double> @llvm.masked.gather.v8f64(<8 x double*> %ptrs, i32 8, <8 x i1> %mask, <8 x double> undef)
+  store <8 x double> %vals, <8 x double>* %a
+  ret void
+}
+
+define void @masked_gather_v16f64(<16 x double>* %a, <16 x double*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v16f64:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_1024-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; VBITS_GE_1024-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]].d
+; VBITS_GE_1024-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; VBITS_GE_1024-NEXT: ret
+  %cval = load <16 x double>, <16 x double>* %a
+  %ptrs = load <16 x double*>, <16 x double*>* %b
+  %mask = fcmp oeq <16 x double> %cval, zeroinitializer
+  %vals = call <16 x double> @llvm.masked.gather.v16f64(<16 x double*> %ptrs, i32 8, <16 x i1> %mask, <16 x double> undef)
+  store <16 x double> %vals, <16 x double>* %a
+  ret void
+}
+
+define void @masked_gather_v32f64(<32 x double>* %a, <32 x double*>* %b) #0 {
+; CHECK-LABEL: masked_gather_v32f64:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]].d
+; VBITS_GE_2048-NEXT: ld1d { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: st1d { [[RES]].d }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cval = load <32 x double>, <32 x double>* %a
+  %ptrs = load <32 x double*>, <32 x double*>* %b
+  %mask = fcmp oeq <32 x double> %cval, zeroinitializer
+  %vals = call <32 x double> @llvm.masked.gather.v32f64(<32 x double*> %ptrs, i32 8, <32 x i1> %mask, <32 x double> undef)
+  store <32 x double> %vals, <32 x double>* %a
+  ret void
+}
+
+; The above tests test the types, the below tests check that the addressing
+; modes still function
+
+define void @masked_gather_32b_scaled_sext(<32 x half>* %a, <32 x i32>* %b, half* %base) #0 {
+; CHECK-LABEL: masked_gather_32b_scaled_sext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1h { [[RES:z[0-9]+]].s }, [[MASK]]/z, [x2, [[PTRS]].s, sxtw #1]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].h, [[RES]].h, [[RES]].h
+; VBITS_GE_2048-NEXT: st1h { [[UZP]].h }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = sext <32 x i32> %idxs to <32 x i64>
+  %ptrs = getelementptr half, half* %base, <32 x i64> %ext
+  %mask = fcmp oeq <32 x half> %cvals, zeroinitializer
+  %vals = call <32 x half> @llvm.masked.gather.v32f16(<32 x half*> %ptrs, i32 8, <32 x i1> %mask, <32 x half> undef)
+  store <32 x half> %vals, <32 x half>* %a
+  ret void
+}
+
+define void @masked_gather_32b_scaled_zext(<32 x half>* %a, <32 x i32>* %b, half* %base) #0 {
+; CHECK-LABEL: masked_gather_32b_scaled_zext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1h { [[RES:z[0-9]+]].s }, [[MASK]]/z, [x2, [[PTRS]].s, uxtw #1]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].h, [[RES]].h, [[RES]].h
+; VBITS_GE_2048-NEXT: st1h { [[UZP]].h }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = zext <32 x i32> %idxs to <32 x i64>
+  %ptrs = getelementptr half, half* %base, <32 x i64> %ext
+  %mask = fcmp oeq <32 x half> %cvals, zeroinitializer
+  %vals = call <32 x half> @llvm.masked.gather.v32f16(<32 x half*> %ptrs, i32 8, <32 x i1> %mask, <32 x half> undef)
+  store <32 x half> %vals, <32 x half>* %a
+  ret void
+}
+
+define void @masked_gather_32b_unscaled_sext(<32 x half>* %a, <32 x i32>* %b, i8* %base) #0 {
+; CHECK-LABEL: masked_gather_32b_unscaled_sext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1h { [[RES:z[0-9]+]].s }, [[MASK]]/z, [x2, [[PTRS]].s, sxtw]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].h, [[RES]].h, [[RES]].h
+; VBITS_GE_2048-NEXT: st1h { [[UZP]].h }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = sext <32 x i32> %idxs to <32 x i64>
+  %byte_ptrs = getelementptr i8, i8* %base, <32 x i64> %ext
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x half*>
+  %mask = fcmp oeq <32 x half> %cvals, zeroinitializer
+  %vals = call <32 x half> @llvm.masked.gather.v32f16(<32 x half*> %ptrs, i32 8, <32 x i1> %mask, <32 x half> undef)
+  store <32 x half> %vals, <32 x half>* %a
+  ret void
+}
+
+define void @masked_gather_32b_unscaled_zext(<32 x half>* %a, <32 x i32>* %b, i8* %base) #0 {
+; CHECK-LABEL: masked_gather_32b_unscaled_zext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1h { [[RES:z[0-9]+]].s }, [[MASK]]/z, [x2, [[PTRS]].s, uxtw]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].h, [[RES]].h, [[RES]].h
+; VBITS_GE_2048-NEXT: st1h { [[UZP]].h }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = zext <32 x i32> %idxs to <32 x i64>
+  %byte_ptrs = getelementptr i8, i8* %base, <32 x i64> %ext
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x half*>
+  %mask = fcmp oeq <32 x half> %cvals, zeroinitializer
+  %vals = call <32 x half> @llvm.masked.gather.v32f16(<32 x half*> %ptrs, i32 8, <32 x i1> %mask, <32 x half> undef)
+  store <32 x half> %vals, <32 x half>* %a
+  ret void
+}
+
+define void @masked_gather_64b_scaled(<32 x float>* %a, <32 x i64>* %b, float* %base) #0 {
+; CHECK-LABEL: masked_gather_64b_scaled:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, [x2, [[PTRS]].d, lsl #2]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x float>, <32 x float>* %a
+  %idxs = load <32 x i64>, <32 x i64>* %b
+  %ptrs = getelementptr float, float* %base, <32 x i64> %idxs
+  %mask = fcmp oeq <32 x float> %cvals, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> undef)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+define void @masked_gather_64b_unscaled(<32 x float>* %a, <32 x i64>* %b, i8* %base) #0 {
+; CHECK-LABEL: masked_gather_64b_unscaled:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, [x2, [[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x float>, <32 x float>* %a
+  %idxs = load <32 x i64>, <32 x i64>* %b
+  %byte_ptrs = getelementptr i8, i8* %base, <32 x i64> %idxs
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x float*>
+  %mask = fcmp oeq <32 x float> %cvals, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> undef)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+; FIXME: This case does not yet codegen well due to deficiencies in opcode selection
+define void @masked_gather_vec_plus_reg(<32 x float>* %a, <32 x i8*>* %b, i64 %off) #0 {
+; CHECK-LABEL: masked_gather_vec_plus_reg:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[OFF:z[0-9]+]].d, x2
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: add [[PTRS_ADD:z[0-9]+]].d, [[PG1]]/m, [[PTRS]].d, [[OFF]].d
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS_ADD]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x float>, <32 x float>* %a
+  %bases = load <32 x i8*>, <32 x i8*>* %b
+  %byte_ptrs = getelementptr i8, <32 x i8*> %bases, i64 %off
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x float*>
+  %mask = fcmp oeq <32 x float> %cvals, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> undef)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+; FIXME: This case does not yet codegen well due to deficiencies in opcode selection
+define void @masked_gather_vec_plus_imm(<32 x float>* %a, <32 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_gather_vec_plus_imm:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[OFF:z[0-9]+]].d, #4
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: add [[PTRS_ADD:z[0-9]+]].d, [[PG1]]/m, [[PTRS]].d, [[OFF]].d
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS_ADD]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x float>, <32 x float>* %a
+  %bases = load <32 x i8*>, <32 x i8*>* %b
+  %byte_ptrs = getelementptr i8, <32 x i8*> %bases, i64 4
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x float*>
+  %mask = fcmp oeq <32 x float> %cvals, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> undef)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+define void @masked_gather_passthru(<32 x float>* %a, <32 x float*>* %b, <32 x float>* %c) #0 {
+; CHECK-LABEL: masked_gather_passthru:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1w { [[PT:z[0-9]+]].s }, [[PG0]]/z, [x2]
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: sel [[SEL:z[0-9]+]].s, [[PG1]], [[UZP]].s, [[PT]].s
+; VBITS_GE_2048-NEXT: st1w { [[SEL]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x float>, <32 x float>* %a
+  %ptrs = load <32 x float*>, <32 x float*>* %b
+  %passthru = load <32 x float>, <32 x float>* %c
+  %mask = fcmp oeq <32 x float> %cvals, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> %passthru)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+define void @masked_gather_passthru_0(<32 x float>* %a, <32 x float*>* %b) #0 {
+; CHECK-LABEL: masked_gather_passthru_0:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: ld1w { [[RES:z[0-9]+]].d }, [[MASK]]/z, {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: uzp1 [[UZP:z[0-9]+]].s, [[RES]].s, [[RES]].s
+; VBITS_GE_2048-NEXT: st1w { [[UZP]].s }, [[PG0]], [x0]
+; VBITS_GE_2048-NEXT: ret
+  %cvals = load <32 x float>, <32 x float>* %a
+  %ptrs = load <32 x float*>, <32 x float*>* %b
+  %mask = fcmp oeq <32 x float> %cvals, zeroinitializer
+  %vals = call <32 x float> @llvm.masked.gather.v32f32(<32 x float*> %ptrs, i32 8, <32 x i1> %mask, <32 x float> zeroinitializer)
+  store <32 x float> %vals, <32 x float>* %a
+  ret void
+}
+
+declare <2 x i8> @llvm.masked.gather.v2i8(<2 x i8*>, i32, <2 x i1>, <2 x i8>)
+declare <4 x i8> @llvm.masked.gather.v4i8(<4 x i8*>, i32, <4 x i1>, <4 x i8>)
+declare <8 x i8> @llvm.masked.gather.v8i8(<8 x i8*>, i32, <8 x i1>, <8 x i8>)
+declare <16 x i8> @llvm.masked.gather.v16i8(<16 x i8*>, i32, <16 x i1>, <16 x i8>)
+declare <32 x i8> @llvm.masked.gather.v32i8(<32 x i8*>, i32, <32 x i1>, <32 x i8>)
+
+declare <2 x i16> @llvm.masked.gather.v2i16(<2 x i16*>, i32, <2 x i1>, <2 x i16>)
+declare <4 x i16> @llvm.masked.gather.v4i16(<4 x i16*>, i32, <4 x i1>, <4 x i16>)
+declare <8 x i16> @llvm.masked.gather.v8i16(<8 x i16*>, i32, <8 x i1>, <8 x i16>)
+declare <16 x i16> @llvm.masked.gather.v16i16(<16 x i16*>, i32, <16 x i1>, <16 x i16>)
+declare <32 x i16> @llvm.masked.gather.v32i16(<32 x i16*>, i32, <32 x i1>, <32 x i16>)
+
+declare <2 x i32> @llvm.masked.gather.v2i32(<2 x i32*>, i32, <2 x i1>, <2 x i32>)
+declare <4 x i32> @llvm.masked.gather.v4i32(<4 x i32*>, i32, <4 x i1>, <4 x i32>)
+declare <8 x i32> @llvm.masked.gather.v8i32(<8 x i32*>, i32, <8 x i1>, <8 x i32>)
+declare <16 x i32> @llvm.masked.gather.v16i32(<16 x i32*>, i32, <16 x i1>, <16 x i32>)
+declare <32 x i32> @llvm.masked.gather.v32i32(<32 x i32*>, i32, <32 x i1>, <32 x i32>)
+
+declare <1 x i64> @llvm.masked.gather.v1i64(<1 x i64*>, i32, <1 x i1>, <1 x i64>)
+declare <2 x i64> @llvm.masked.gather.v2i64(<2 x i64*>, i32, <2 x i1>, <2 x i64>)
+declare <4 x i64> @llvm.masked.gather.v4i64(<4 x i64*>, i32, <4 x i1>, <4 x i64>)
+declare <8 x i64> @llvm.masked.gather.v8i64(<8 x i64*>, i32, <8 x i1>, <8 x i64>)
+declare <16 x i64> @llvm.masked.gather.v16i64(<16 x i64*>, i32, <16 x i1>, <16 x i64>)
+declare <32 x i64> @llvm.masked.gather.v32i64(<32 x i64*>, i32, <32 x i1>, <32 x i64>)
+
+declare <2 x half> @llvm.masked.gather.v2f16(<2 x half*>, i32, <2 x i1>, <2 x half>)
+declare <4 x half> @llvm.masked.gather.v4f16(<4 x half*>, i32, <4 x i1>, <4 x half>)
+declare <8 x half> @llvm.masked.gather.v8f16(<8 x half*>, i32, <8 x i1>, <8 x half>)
+declare <16 x half> @llvm.masked.gather.v16f16(<16 x half*>, i32, <16 x i1>, <16 x half>)
+declare <32 x half> @llvm.masked.gather.v32f16(<32 x half*>, i32, <32 x i1>, <32 x half>)
+
+declare <2 x float> @llvm.masked.gather.v2f32(<2 x float*>, i32, <2 x i1>, <2 x float>)
+declare <4 x float> @llvm.masked.gather.v4f32(<4 x float*>, i32, <4 x i1>, <4 x float>)
+declare <8 x float> @llvm.masked.gather.v8f32(<8 x float*>, i32, <8 x i1>, <8 x float>)
+declare <16 x float> @llvm.masked.gather.v16f32(<16 x float*>, i32, <16 x i1>, <16 x float>)
+declare <32 x float> @llvm.masked.gather.v32f32(<32 x float*>, i32, <32 x i1>, <32 x float>)
+
+declare <1 x double> @llvm.masked.gather.v1f64(<1 x double*>, i32, <1 x i1>, <1 x double>)
+declare <2 x double> @llvm.masked.gather.v2f64(<2 x double*>, i32, <2 x i1>, <2 x double>)
+declare <4 x double> @llvm.masked.gather.v4f64(<4 x double*>, i32, <4 x i1>, <4 x double>)
+declare <8 x double> @llvm.masked.gather.v8f64(<8 x double*>, i32, <8 x i1>, <8 x double>)
+declare <16 x double> @llvm.masked.gather.v16f64(<16 x double*>, i32, <16 x i1>, <16 x double>)
+declare <32 x double> @llvm.masked.gather.v32f64(<32 x double*>, i32, <32 x i1>, <32 x double>)
+
+attributes #0 = { "target-features"="+sve" }

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

+; RUN: llc -aarch64-sve-vector-bits-min=128  -asm-verbose=0 < %s | FileCheck %s -check-prefix=NO_SVE
+; RUN: llc -aarch64-sve-vector-bits-min=256  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_EQ_256
+; RUN: llc -aarch64-sve-vector-bits-min=384  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK
+; RUN: llc -aarch64-sve-vector-bits-min=512  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=640  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=768  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=896  -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1024 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1152 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1280 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1408 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1536 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1664 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1792 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=1920 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_1024,VBITS_GE_512
+; RUN: llc -aarch64-sve-vector-bits-min=2048 -asm-verbose=0 < %s | FileCheck %s -check-prefixes=CHECK,VBITS_GE_2048,VBITS_GE_1024,VBITS_GE_512
+
+target triple = "aarch64-unknown-linux-gnu"
+
+; Don't use SVE when its registers are no bigger than NEON.
+; NO_SVE-NOT: ptrue
+
+;
+; ST1B
+;
+
+define void @masked_scatter_v2i8(<2 x i8>* %a, <2 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2i8:
+; CHECK: ldrb [[VALS_LO:w[0-9]+]], [x0]
+; CHECK-NEXT: ldrb [[VALS_HI:w[0-9]+]], [x0, #1]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: fmov s[[VALS:[0-9]+]], [[VALS_LO]]
+; CHECK-NEXT: mov v[[VALS]].s[1], [[VALS_HI]]
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ushll v[[SHL:[0-9]+]].2d, v[[VALS]].2s, #0
+; CHECK-NEXT: st1b { z[[SHL]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x i8>, <2 x i8>* %a
+  %ptrs = load <2 x i8*>, <2 x i8*>* %b
+  %mask = icmp eq <2 x i8> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2i8(<2 x i8> %vals, <2 x i8*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4i8(<4 x i8>* %a, <4 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4i8:
+; CHECK: ldr s[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; CHECK-NEXT: ushll [[SHL:v[0-9]+]].8h, v[[VALS]].8b, #0
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].4h, [[SHL]].4h, #0
+; CHECK-NEXT: uunpklo [[UPK1:z[0-9]+]].s, z[[VALS]].h
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; CHECK-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; CHECK-NEXT: st1b { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x i8>, <4 x i8>* %a
+  %ptrs = load <4 x i8*>, <4 x i8*>* %b
+  %mask = icmp eq <4 x i8> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4i8(<4 x i8> %vals, <4 x i8*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8i8(<8 x i8>* %a, <8 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8i8:
+; VBITS_EQ_256: ldr d[[VALS:[0-9]+]], [x0]
+; VBITS_EQ_256-NEXT: add x8, x1, #32
+; VBITS_EQ_256-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; VBITS_EQ_256-NEXT: cmeq [[ZMSK:v[0-9]+]].8b, v[[VALS]].8b, #0
+; VBITS_EQ_256-NEXT: zip1 [[VAL_LO:v[0-9]+]].8b, [[ZMSK]].8b, v[[VALS]].8b
+; VBITS_EQ_256-NEXT: zip2 [[VAL_HI:v[0-9]+]].8b, [[ZMSK]].8b, v[[VALS]].8b
+; VBITS_EQ_256-NEXT: shl [[SHL_LO:v[0-9]+]].4h, [[VAL_LO]].4h, #8
+; VBITS_EQ_256-NEXT: shl [[SHL_HI:v[0-9]+]].4h, [[VAL_HI]].4h, #8
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG0]]/z, [x8]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_EQ_256-NEXT: sshr v[[SSHR_LO:[0-9]+]].4h, [[SHL_LO]].4h, #8
+; VBITS_EQ_256-NEXT: sshr v[[SSHR_HI:[0-9]+]].4h, [[SHL_HI]].4h, #8
+; VBITS_EQ_256-NEXT: cmpne [[MASK_LO:p[0-9]+]].h, [[PG1]]/z, z[[SSHR_LO]].h, #0
+; VBITS_EQ_256-NEXT: cmpne [[MASK_HI:p[0-9]+]].h, [[PG1]]/z, z[[SSHR_HI]].h, #0
+; VBITS_EQ_256-NEXT: zip1 v[[VALS2_LO:[0-9]+]].8b, v[[VALS]].8b, v[[VALS]].8b
+; VBITS_EQ_256-NEXT: zip2 v[[VALS2_HI:[0-9]+]].8b, v[[VALS]].8b, v[[VALS]].8b
+; VBITS_EQ_256-NEXT: uunpklo [[UPK1_LO:z[0-9]+]].s, z[[VALS2_LO]].h
+; VBITS_EQ_256-NEXT: uunpklo [[UPK1_HI:z[0-9]+]].s, z[[VALS2_HI]].h
+; VBITS_EQ_256-NEXT: uunpklo [[UPK2_LO:z[0-9]+]].d, [[UPK1_LO]].s
+; VBITS_EQ_256-NEXT: uunpklo [[UPK2_HI:z[0-9]+]].d, [[UPK1_HI]].s
+; VBITS_EQ_256-NEXT: st1b { [[UPK2_LO]].d }, [[MASK_LO]], {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-NEXT: st1b { [[UPK2_HI]].d }, [[MASK_HI]], {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: ret
+
+; VBITS_GE_512: ldr d[[VALS:[0-9]+]], [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].b, vl8
+; VBITS_GE_512-NEXT: cmeq v[[CMP:[0-9]+]].8b, v[[VALS]].8b, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK1:z[0-9]+]].h, z[[VALS]].b
+; VBITS_GE_512-NEXT: uunpklo [[UPK2:z[0-9]+]].s, [[UPK1]].h
+; VBITS_GE_512-NEXT: cmpne [[MASK:p[0-9]+]].b, [[PG1]]/z, z[[CMP]].b, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK3:z[0-9]+]].d, [[UPK2]].s
+; VBITS_GE_512-NEXT: st1b { [[UPK3]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x i8>, <8 x i8>* %a
+  %ptrs = load <8 x i8*>, <8 x i8*>* %b
+  %mask = icmp eq <8 x i8> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8i8(<8 x i8> %vals, <8 x i8*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16i8(<16 x i8>* %a, <16 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16i8:
+; VBITS_GE_1024: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG0:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].b, vl16
+; VBITS_GE_1024-NEXT: cmeq v[[CMP:[0-9]+]].16b, v[[VALS]].16b, #0
+; VBITS_GE_1024-NEXT: uunpklo [[UPK1:z[0-9]+]].h, z[[VALS]].b
+; VBITS_GE_1024-NEXT: uunpklo [[UPK2:z[0-9]+]].s, [[UPK1]].h
+; VBITS_GE_1024-NEXT: cmpne [[MASK:p[0-9]+]].b, [[PG1]]/z, z[[CMP]].b, #0
+; VBITS_GE_1024-NEXT: uunpklo [[UPK3:z[0-9]+]].d, [[UPK2]].s
+; VBITS_GE_1024-NEXT: st1b { [[UPK3]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x i8>, <16 x i8>* %a
+  %ptrs = load <16 x i8*>, <16 x i8*>* %b
+  %mask = icmp eq <16 x i8> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16i8(<16 x i8> %vals, <16 x i8*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32i8(<32 x i8>* %a, <32 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32i8:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].b, vl32
+; VBITS_GE_2048-NEXT: ld1b { [[VALS:z[0-9]+]].b }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].b, [[PG0]]/z, [[VALS]].b, #0
+; VBITS_GE_2048-NEXT: uunpklo [[UPK1:z[0-9]+]].h, [[VALS]].b
+; VBITS_GE_2048-NEXT: uunpklo [[UPK2:z[0-9]+]].s, [[UPK1]].h
+; VBITS_GE_2048-NEXT: uunpklo [[UPK3:z[0-9]+]].d, [[UPK2]].s
+; VBITS_GE_2048-NEXT: st1b { [[UPK3]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x i8>, <32 x i8>* %a
+  %ptrs = load <32 x i8*>, <32 x i8*>* %b
+  %mask = icmp eq <32 x i8> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32i8(<32 x i8> %vals, <32 x i8*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+;
+; ST1H
+;
+
+define void @masked_scatter_v2i16(<2 x i16>* %a, <2 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2i16:
+; CHECK: ldrh [[VALS_LO:w[0-9]+]], [x0]
+; CHECK-NEXT: ldrh [[VALS_HI:w[0-9]+]], [x0, #2]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: fmov s[[VALS:[0-9]+]], [[VALS_LO]]
+; CHECK-NEXT: mov v[[VALS]].s[1], [[VALS_HI]]
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ushll v[[SHL:[0-9]+]].2d, v[[VALS]].2s, #0
+; CHECK-NEXT: st1h { z[[SHL]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x i16>, <2 x i16>* %a
+  %ptrs = load <2 x i16*>, <2 x i16*>* %b
+  %mask = icmp eq <2 x i16> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2i16(<2 x i16> %vals, <2 x i16*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4i16(<4 x i16>* %a, <4 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4i16:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].4h, v[[VALS]].4h, #0
+; CHECK-NEXT: uunpklo [[UPK1:z[0-9]+]].s, z[[VALS]].h
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; CHECK-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; CHECK-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x i16>, <4 x i16>* %a
+  %ptrs = load <4 x i16*>, <4 x i16*>* %b
+  %mask = icmp eq <4 x i16> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4i16(<4 x i16> %vals, <4 x i16*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8i16(<8 x i16>* %a, <8 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8i16:
+; VBITS_EQ_256: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_EQ_256-NEXT: add x8, x1, #32
+; VBITS_EQ_256-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG0]]/z, [x8]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_EQ_256-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; VBITS_EQ_256-NEXT: cmeq v[[ZMSK:[0-9]+]].8h, v[[VALS]].8h, #0
+; VBITS_EQ_256-DAG: ext v[[EXT:[0-9]+]].16b, v[[VALS]].16b, v[[VALS]].16b, #8
+; VBITS_EQ_256-DAG: cmpne [[MASK_LO:p[0-9]+]].h, [[PG1]]/z, z[[ZMSK]].h, #0
+; VBITS_EQ_256-DAG: ext v[[ZEXT:[0-9]+]].16b, v[[ZMSK]].16b, v[[ZMSK]].16b, #8
+; VBITS_EQ_256-DAG: cmpne [[MASK_HI:p[0-9]+]].h, [[PG1]]/z, z[[ZEXT]].h, #0
+; VBITS_EQ_256-DAG: uunpklo [[UPK1_LO:z[0-9]+]].s, z[[VALS]].h
+; VBITS_EQ_256-DAG: uunpklo [[UPK1_HI:z[0-9]+]].s, z[[EXT]].h
+; VBITS_EQ_256-DAG: uunpklo [[UPK2_LO:z[0-9]+]].d, [[UPK1_LO]].s
+; VBITS_EQ_256-DAG: uunpklo [[UPK2_HI:z[0-9]+]].d, [[UPK1_HI]].s
+; VBITS_EQ_256-DAG: st1h { [[UPK2_LO]].d }, [[MASK_LO]], {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-DAG: st1h { [[UPK2_HI]].d }, [[MASK_HI]], {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: ret
+
+; VBITS_GE_512: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].h, vl8
+; VBITS_GE_512-NEXT: cmeq v[[CMP:[0-9]+]].8h, v[[VALS]].8h, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK1:z[0-9]+]].s, z[[VALS]].h
+; VBITS_GE_512-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; VBITS_GE_512-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x i16>, <8 x i16>* %a
+  %ptrs = load <8 x i16*>, <8 x i16*>* %b
+  %mask = icmp eq <8 x i16> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8i16(<8 x i16> %vals, <8 x i16*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16i16(<16 x i16>* %a, <16 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16i16:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].h, vl16
+; VBITS_GE_1024-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: cmpeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, #0
+; VBITS_GE_1024-NEXT: uunpklo [[UPK1:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_1024-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; VBITS_GE_1024-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x i16>, <16 x i16>* %a
+  %ptrs = load <16 x i16*>, <16 x i16*>* %b
+  %mask = icmp eq <16 x i16> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16i16(<16 x i16> %vals, <16 x i16*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32i16(<32 x i16>* %a, <32 x i16*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32i16:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, #0
+; VBITS_GE_2048-NEXT: uunpklo [[UPK1:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_2048-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; VBITS_GE_2048-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x i16>, <32 x i16>* %a
+  %ptrs = load <32 x i16*>, <32 x i16*>* %b
+  %mask = icmp eq <32 x i16> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32i16(<32 x i16> %vals, <32 x i16*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+;
+; ST1W
+;
+
+define void @masked_scatter_v2i32(<2 x i32>* %a, <2 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2i32:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ushll v[[SHL:[0-9]+]].2d, v[[VALS]].2s, #0
+; CHECK-NEXT: st1w { z[[SHL]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x i32>, <2 x i32>* %a
+  %ptrs = load <2 x i32*>, <2 x i32*>* %b
+  %mask = icmp eq <2 x i32> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2i32(<2 x i32> %vals, <2 x i32*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4i32(<4 x i32>* %a, <4 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4i32:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].s, vl4
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].4s, v[[VALS]].4s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG1]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: uunpklo [[UPK:z[0-9]+]].d, z[[VALS]].s
+; CHECK-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x i32>, <4 x i32>* %a
+  %ptrs = load <4 x i32*>, <4 x i32*>* %b
+  %mask = icmp eq <4 x i32> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4i32(<4 x i32> %vals, <4 x i32*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8i32(<8 x i32>* %a, <8 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8i32:
+; VBITS_EQ_256: ptrue [[PG0:p[0-9]+]].s, vl8
+; VBITS_EQ_256-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_EQ_256-NEXT: add x8, x1, #32
+; VBITS_EQ_256-NEXT: ptrue [[PG1:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG1]]/z, [x8]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_EQ_256-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_EQ_256-NEXT: add x8, sp, #32
+; VBITS_EQ_256-NEXT: mov x9, sp
+; VBITS_EQ_256-NEXT: mov [[MONE:z[0-9]+]].s, p1/z, #-1
+; VBITS_EQ_256-NEXT: st1w  { [[MONE]].s }, [[PG0]], [x8]
+; VBITS_EQ_256-NEXT: st1w  { [[VALS]].s }, [[PG0]], [x9]
+; VBITS_EQ_256-NEXT: ldr q[[CMP_LO:[0-9]+]], [sp, #32]
+; VBITS_EQ_256-NEXT: ldr q[[VAL_LO:[0-9]+]], [sp]
+; VBITS_EQ_256-NEXT: ptrue [[PG2:p[0-9]+]].s, vl4
+; VBITS_EQ_256-NEXT: cmpne [[MASK_LO:p[0-9]+]].s, [[PG2]]/z, z[[CMP_LO]].s, #0
+; VBITS_EQ_256-NEXT: uunpklo [[UPK1_LO:z[0-9]+]].d, z[[VAL_LO]].s
+; VBITS_EQ_256-NEXT: st1w { [[UPK1_LO]].d }, [[MASK_LO]], {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-NEXT: ldr q[[CMP_HI:[0-9]+]], [sp, #48]
+; VBITS_EQ_256-NEXT: ldr q[[VAL_HI:[0-9]+]], [sp, #16]
+; VBITS_EQ_256-NEXT: cmpne [[MASK_HI:p[0-9]+]].s, [[PG2]]/z, z[[CMP_HI]].s, #0
+; VBITS_EQ_256-NEXT: uunpklo [[UPK1_HI:z[0-9]+]].d, z[[VAL_HI]].s
+; VBITS_EQ_256-NEXT: st1w { [[UPK1_HI]].d }, [[MASK_HI]], {{\[}}[[PTRS_HI]].d]
+
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].s, vl8
+; VBITS_GE_512-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_512-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_512-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x i32>, <8 x i32>* %a
+  %ptrs = load <8 x i32*>, <8 x i32*>* %b
+  %mask = icmp eq <8 x i32> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8i32(<8 x i32> %vals, <8 x i32*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16i32(<16 x i32>* %a, <16 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16i32:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].s, vl16
+; VBITS_GE_1024-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_GE_1024-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_1024-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x i32>, <16 x i32>* %a
+  %ptrs = load <16 x i32*>, <16 x i32*>* %b
+  %mask = icmp eq <16 x i32> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16i32(<16 x i32> %vals, <16 x i32*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32i32(<32 x i32>* %a, <32 x i32*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32i32:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, #0
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_2048-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x i32>, <32 x i32>* %a
+  %ptrs = load <32 x i32*>, <32 x i32*>* %b
+  %mask = icmp eq <32 x i32> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32i32(<32 x i32> %vals, <32 x i32*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+;
+; ST1D
+;
+
+; Scalarize 1 x i64 scatters
+define void @masked_scatter_v1i64(<1 x i64>* %a, <1 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v1i64:
+; CHECK-NOT: ptrue
+  %vals = load <1 x i64>, <1 x i64>* %a
+  %ptrs = load <1 x i64*>, <1 x i64*>* %b
+  %mask = icmp eq <1 x i64> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v1i64(<1 x i64> %vals, <1 x i64*> %ptrs, i32 8, <1 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v2i64(<2 x i64>* %a, <2 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2i64:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl2
+; CHECK-NEXT: cmeq v[[CMP:[0-9]+]].2d, v[[VALS]].2d, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].d, [[PG0]]/z, z[[CMP]].d, #0
+; CHECK-NEXT: st1d { z[[VALS]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x i64>, <2 x i64>* %a
+  %ptrs = load <2 x i64*>, <2 x i64*>* %b
+  %mask = icmp eq <2 x i64> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2i64(<2 x i64> %vals, <2 x i64*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4i64(<4 x i64>* %a, <4 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4i64:
+; CHECK: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; CHECK-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x i64>, <4 x i64>* %a
+  %ptrs = load <4 x i64*>, <4 x i64*>* %b
+  %mask = icmp eq <4 x i64> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4i64(<4 x i64> %vals, <4 x i64*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8i64(<8 x i64>* %a, <8 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8i64:
+; VBITS_EQ_256: ptrue [[PG0:p[0-9]+]].d, vl4
+; VBITS_EQ_256-NEXT: add x8, x0, #32
+; VBITS_EQ_256-NEXT: add x9, x1, #32
+; VBITS_EQ_256-NEXT: ld1d { [[VALS_LO:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_EQ_256-NEXT: ld1d { [[VALS_HI:z[0-9]+]].d }, [[PG0]]/z, [x8]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_HI:z[0-9]+]].d }, [[PG0]]/z, [x9]
+; VBITS_EQ_256-NEXT: ld1d { [[PTRS_LO:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_EQ_256-NEXT: cmpeq [[MASK_HI:p[0-9]+]].d, [[PG0]]/z, [[VALS_HI]].d, #0
+; VBITS_EQ_256-NEXT: cmpeq [[MASK_LO:p[0-9]+]].d, [[PG0]]/z, [[VALS_LO]].d, #0
+; VBITS_EQ_256-NEXT: st1d { [[VALS_LO]].d }, [[MASK_LO]], {{\[}}[[PTRS_LO]].d]
+; VBITS_EQ_256-NEXT: st1d { [[VALS_HI]].d }, [[MASK_HI]], {{\[}}[[PTRS_HI]].d]
+; VBITS_EQ_256-NEXT: ret
+
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; VBITS_GE_512-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x i64>, <8 x i64>* %a
+  %ptrs = load <8 x i64*>, <8 x i64*>* %b
+  %mask = icmp eq <8 x i64> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8i64(<8 x i64> %vals, <8 x i64*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16i64(<16 x i64>* %a, <16 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16i64:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_1024-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; VBITS_GE_1024-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x i64>, <16 x i64>* %a
+  %ptrs = load <16 x i64*>, <16 x i64*>* %b
+  %mask = icmp eq <16 x i64> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16i64(<16 x i64> %vals, <16 x i64*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32i64(<32 x i64>* %a, <32 x i64*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32i64:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_2048-NEXT: cmpeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, #0
+; VBITS_GE_2048-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x i64>, <32 x i64>* %a
+  %ptrs = load <32 x i64*>, <32 x i64*>* %b
+  %mask = icmp eq <32 x i64> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32i64(<32 x i64> %vals, <32 x i64*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+;
+; ST1H (float)
+;
+
+define void @masked_scatter_v2f16(<2 x half>* %a, <2 x half*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2f16:
+; CHECK: ldr s[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: movi d2, #0000000000000000
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].h, vl4
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].4h, v[[VALS]].4h, #0.0
+; CHECK-NEXT: umov w8, v[[CMP]].h[0]
+; CHECK-NEXT: umov w9, v[[CMP]].h[1]
+; CHECK-NEXT: fmov s[[CMP]], w8
+; CHECK-NEXT: mov v[[CMP]].s[1], w9
+; CHECK-NEXT: shl v[[CMP]].2s, v[[CMP]].2s, #16
+; CHECK-NEXT: sshr v[[CMP]].2s, v[[CMP]].2s, #16
+; CHECK-NEXT: fmov w9, s[[CMP]]
+; CHECK-NEXT: mov w8, v[[CMP]].s[1]
+; CHECK-NEXT: mov v[[NCMP:[0-9]+]].h[0], w9
+; CHECK-NEXT: mov v[[NCMP]].h[1], w8
+; CHECK-NEXT: shl v[[NCMP]].4h, v[[NCMP]].4h, #15
+; CHECK-NEXT: uunpklo [[UPK1]].s, z[[VALS]].h
+; CHECK-NEXT: sshr v[[NCMP]].4h, v[[NCMP]].4h, #15
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG0]]/z, z[[NCMP]].h, #0
+; CHECK-NEXT: uunpklo [[UPK2]].d, [[UPK1]].s
+; CHECK-NEXT: st1h { [[UPK2]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x half>, <2 x half>* %a
+  %ptrs = load <2 x half*>, <2 x half*>* %b
+  %mask = fcmp oeq <2 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2f16(<2 x half> %vals, <2 x half*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4f16(<4 x half>* %a, <4 x half*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4f16:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].h, vl4
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].4h, v[[VALS]].4h, #0
+; CHECK-NEXT: uunpklo [[UPK1:z[0-9]+]].s, z[[VALS]].h
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; CHECK-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; CHECK-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x half>, <4 x half>* %a
+  %ptrs = load <4 x half*>, <4 x half*>* %b
+  %mask = fcmp oeq <4 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4f16(<4 x half> %vals, <4 x half*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8f16(<8 x half>* %a, <8 x half*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8f16:
+; VBITS_GE_512: ldr q[[VALS:[0-9]+]], [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].h, vl8
+; VBITS_GE_512-NEXT: fcmeq v[[CMP:[0-9]+]].8h, v[[VALS]].8h, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK1:z[0-9]+]].s, z[[VALS]].h
+; VBITS_GE_512-NEXT: cmpne [[MASK:p[0-9]+]].h, [[PG1]]/z, z[[CMP]].h, #0
+; VBITS_GE_512-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; VBITS_GE_512-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x half>, <8 x half>* %a
+  %ptrs = load <8 x half*>, <8 x half*>* %b
+  %mask = fcmp oeq <8 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8f16(<8 x half> %vals, <8 x half*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16f16(<16 x half>* %a, <16 x half*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16f16:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].h, vl16
+; VBITS_GE_1024-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_1024-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_1024-NEXT: uunpklo [[UPK1:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_1024-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; VBITS_GE_1024-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x half>, <16 x half>* %a
+  %ptrs = load <16 x half*>, <16 x half*>* %b
+  %mask = fcmp oeq <16 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16f16(<16 x half> %vals, <16 x half*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32f16(<32 x half>* %a, <32 x half*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32f16:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK1:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_2048-NEXT: uunpklo [[UPK2:z[0-9]+]].d, [[UPK1]].s
+; VBITS_GE_2048-NEXT: st1h { [[UPK2]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x half>, <32 x half>* %a
+  %ptrs = load <32 x half*>, <32 x half*>* %b
+  %mask = fcmp oeq <32 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f16(<32 x half> %vals, <32 x half*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+;
+; ST1W (float)
+;
+
+define void @masked_scatter_v2f32(<2 x float>* %a, <2 x float*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2f32:
+; CHECK: ldr d[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].s, vl2
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].2s, v[[VALS]].2s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG0]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: ushll v[[SHL:[0-9]+]].2d, v[[VALS]].2s, #0
+; CHECK-NEXT: st1w { z[[SHL]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x float>, <2 x float>* %a
+  %ptrs = load <2 x float*>, <2 x float*>* %b
+  %mask = fcmp oeq <2 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2f32(<2 x float> %vals, <2 x float*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4f32(<4 x float>* %a, <4 x float*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4f32:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: ptrue [[PG1:p[0-9]+]].s, vl4
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].4s, v[[VALS]].4s, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].s, [[PG1]]/z, z[[CMP]].s, #0
+; CHECK-NEXT: uunpklo [[UPK:z[0-9]+]].d, z[[VALS]].s
+; CHECK-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x float>, <4 x float>* %a
+  %ptrs = load <4 x float*>, <4 x float*>* %b
+  %mask = fcmp oeq <4 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4f32(<4 x float> %vals, <4 x float*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8f32(<8 x float>* %a, <8 x float*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8f32:
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].s, vl8
+; VBITS_GE_512-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ptrue [[PG1:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_512-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_512-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_512-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_512-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x float>, <8 x float>* %a
+  %ptrs = load <8 x float*>, <8 x float*>* %b
+  %mask = fcmp oeq <8 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8f32(<8 x float> %vals, <8 x float*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16f32(<16 x float>* %a, <16 x float*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16f32:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].s, vl16
+; VBITS_GE_1024-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ptrue [[PG1:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_1024-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_1024-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_1024-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_1024-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x float>, <16 x float>* %a
+  %ptrs = load <16 x float*>, <16 x float*>* %b
+  %mask = fcmp oeq <16 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16f32(<16 x float> %vals, <16 x float*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32f32(<32 x float>* %a, <32 x float*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32f32:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_2048-NEXT: st1w { [[UPK]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x float>, <32 x float>* %a
+  %ptrs = load <32 x float*>, <32 x float*>* %b
+  %mask = fcmp oeq <32 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f32(<32 x float> %vals, <32 x float*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+;
+; ST1D (float)
+;
+
+; Scalarize 1 x double scatters
+define void @masked_scatter_v1f64(<1 x double>* %a, <1 x double*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v1f64:
+; CHECK-NOT: ptrue
+  %vals = load <1 x double>, <1 x double>* %a
+  %ptrs = load <1 x double*>, <1 x double*>* %b
+  %mask = fcmp oeq <1 x double> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v1f64(<1 x double> %vals, <1 x double*> %ptrs, i32 8, <1 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v2f64(<2 x double>* %a, <2 x double*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v2f64:
+; CHECK: ldr q[[VALS:[0-9]+]], [x0]
+; CHECK-NEXT: ldr q[[PTRS:[0-9]+]], [x1]
+; CHECK-NEXT: ptrue [[PG0:p[0-9]+]].d, vl2
+; CHECK-NEXT: fcmeq v[[CMP:[0-9]+]].2d, v[[VALS]].2d, #0
+; CHECK-NEXT: cmpne [[MASK:p[0-9]+]].d, [[PG0]]/z, z[[CMP]].d, #0
+; CHECK-NEXT: st1d { z[[VALS]].d }, [[MASK]], [z[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <2 x double>, <2 x double>* %a
+  %ptrs = load <2 x double*>, <2 x double*>* %b
+  %mask = fcmp oeq <2 x double> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v2f64(<2 x double> %vals, <2 x double*> %ptrs, i32 8, <2 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v4f64(<4 x double>* %a, <4 x double*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v4f64:
+; CHECK: ptrue [[PG0:p[0-9]+]].d, vl4
+; CHECK-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; CHECK-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; CHECK-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; CHECK-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]].d
+; CHECK-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; CHECK-NEXT: ret
+  %vals = load <4 x double>, <4 x double>* %a
+  %ptrs = load <4 x double*>, <4 x double*>* %b
+  %mask = fcmp oeq <4 x double> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v4f64(<4 x double> %vals, <4 x double*> %ptrs, i32 8, <4 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v8f64(<8 x double>* %a, <8 x double*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v8f64:
+; VBITS_GE_512: ptrue [[PG0:p[0-9]+]].d, vl8
+; VBITS_GE_512-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_512-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_512-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; VBITS_GE_512-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]]
+; VBITS_GE_512-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_512-NEXT: ret
+  %vals = load <8 x double>, <8 x double>* %a
+  %ptrs = load <8 x double*>, <8 x double*>* %b
+  %mask = fcmp oeq <8 x double> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v8f64(<8 x double> %vals, <8 x double*> %ptrs, i32 8, <8 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v16f64(<16 x double>* %a, <16 x double*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v16f64:
+; VBITS_GE_1024: ptrue [[PG0:p[0-9]+]].d, vl16
+; VBITS_GE_1024-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_1024-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_1024-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; VBITS_GE_1024-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]]
+; VBITS_GE_1024-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_1024-NEXT: ret
+  %vals = load <16 x double>, <16 x double>* %a
+  %ptrs = load <16 x double*>, <16 x double*>* %b
+  %mask = fcmp oeq <16 x double> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v16f64(<16 x double> %vals, <16 x double*> %ptrs, i32 8, <16 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_v32f64(<32 x double>* %a, <32 x double*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_v32f64:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[VALS:z[0-9]+]].d }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG0]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].d, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].d, [[PG0]]/z, [[VALS]].d, [[ZERO]]
+; VBITS_GE_2048-NEXT: st1d { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x double>, <32 x double>* %a
+  %ptrs = load <32 x double*>, <32 x double*>* %b
+  %mask = fcmp oeq <32 x double> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f64(<32 x double> %vals, <32 x double*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+; The above tests test the types, the below tests check that the addressing
+; modes still function
+
+define void @masked_scatter_32b_scaled_sext(<32 x half>* %a, <32 x i32>* %b, half* %base) #0 {
+; CHECK-LABEL: masked_scatter_32b_scaled_sext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_2048-NEXT: st1h { [[VALS]].s }, [[MASK]], [x2, [[PTRS]].s, sxtw #1]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = sext <32 x i32> %idxs to <32 x i64>
+  %ptrs = getelementptr half, half* %base, <32 x i64> %ext
+  %mask = fcmp oeq <32 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f16(<32 x half> %vals, <32 x half*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_32b_scaled_zext(<32 x half>* %a, <32 x i32>* %b, half* %base) #0 {
+; CHECK-LABEL: masked_scatter_32b_scaled_zext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_2048-NEXT: st1h { [[VALS]].s }, [[MASK]], [x2, [[PTRS]].s, uxtw #1]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = zext <32 x i32> %idxs to <32 x i64>
+  %ptrs = getelementptr half, half* %base, <32 x i64> %ext
+  %mask = fcmp oeq <32 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f16(<32 x half> %vals, <32 x half*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_32b_unscaled_sext(<32 x half>* %a, <32 x i32>* %b, i8* %base) #0 {
+; CHECK-LABEL: masked_scatter_32b_unscaled_sext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_2048-NEXT: st1h { [[VALS]].s }, [[MASK]], [x2, [[PTRS]].s, sxtw]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = sext <32 x i32> %idxs to <32 x i64>
+  %byte_ptrs = getelementptr i8, i8* %base, <32 x i64> %ext
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x half*>
+  %mask = fcmp oeq <32 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f16(<32 x half> %vals, <32 x half*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_32b_unscaled_zext(<32 x half>* %a, <32 x i32>* %b, i8* %base) #0 {
+; CHECK-LABEL: masked_scatter_32b_unscaled_zext:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].h, vl32
+; VBITS_GE_2048-NEXT: ld1h { [[VALS:z[0-9]+]].h }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[PTRS:z[0-9]+]].s }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].h, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].h, [[PG0]]/z, [[VALS]].h, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].s, [[VALS]].h
+; VBITS_GE_2048-NEXT: st1h { [[VALS]].s }, [[MASK]], [x2, [[PTRS]].s, uxtw]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x half>, <32 x half>* %a
+  %idxs = load <32 x i32>, <32 x i32>* %b
+  %ext = zext <32 x i32> %idxs to <32 x i64>
+  %byte_ptrs = getelementptr i8, i8* %base, <32 x i64> %ext
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x half*>
+  %mask = fcmp oeq <32 x half> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f16(<32 x half> %vals, <32 x half*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_64b_scaled(<32 x float>* %a, <32 x i64>* %b, float* %base) #0 {
+; CHECK-LABEL: masked_scatter_64b_scaled:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_2048-NEXT: st1w { [[VALS]].d }, [[MASK]], [x2, [[PTRS]].d, lsl #2]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x float>, <32 x float>* %a
+  %idxs = load <32 x i64>, <32 x i64>* %b
+  %ptrs = getelementptr float, float* %base, <32 x i64> %idxs
+  %mask = fcmp oeq <32 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f32(<32 x float> %vals, <32 x float*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+define void @masked_scatter_64b_unscaled(<32 x float>* %a, <32 x i64>* %b, i8* %base) #0 {
+; CHECK-LABEL: masked_scatter_64b_unscaled:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_2048-NEXT: st1w { [[VALS]].d }, [[MASK]], [x2, [[PTRS]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x float>, <32 x float>* %a
+  %idxs = load <32 x i64>, <32 x i64>* %b
+  %byte_ptrs = getelementptr i8, i8* %base, <32 x i64> %idxs
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x float*>
+  %mask = fcmp oeq <32 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f32(<32 x float> %vals, <32 x float*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+; FIXME: This case does not yet codegen well due to deficiencies in opcode selection
+define void @masked_scatter_vec_plus_reg(<32 x float>* %a, <32 x i8*>* %b, i64 %off) #0 {
+; CHECK-LABEL: masked_scatter_vec_plus_reg:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[OFF:z[0-9]+]].d, x2
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: add [[PTRS_ADD:z[0-9]+]].d, [[PG1]]/m, [[PTRS]].d, [[OFF]].d
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_2048-NEXT: st1w { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS_ADD]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x float>, <32 x float>* %a
+  %bases = load <32 x i8*>, <32 x i8*>* %b
+  %byte_ptrs = getelementptr i8, <32 x i8*> %bases, i64 %off
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x float*>
+  %mask = fcmp oeq <32 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f32(<32 x float> %vals, <32 x float*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+; FIXME: This case does not yet codegen well due to deficiencies in opcode selection
+define void @masked_scatter_vec_plus_imm(<32 x float>* %a, <32 x i8*>* %b) #0 {
+; CHECK-LABEL: masked_scatter_vec_plus_imm:
+; VBITS_GE_2048: ptrue [[PG0:p[0-9]+]].s, vl32
+; VBITS_GE_2048-NEXT: ptrue [[PG1:p[0-9]+]].d, vl32
+; VBITS_GE_2048-NEXT: ld1w { [[VALS:z[0-9]+]].s }, [[PG0]]/z, [x0]
+; VBITS_GE_2048-NEXT: ld1d { [[PTRS:z[0-9]+]].d }, [[PG1]]/z, [x1]
+; VBITS_GE_2048-NEXT: mov [[OFF:z[0-9]+]].d, #4
+; VBITS_GE_2048-NEXT: mov [[ZERO:z[0-9]+]].s, #0
+; VBITS_GE_2048-NEXT: fcmeq [[MASK:p[0-9]+]].s, [[PG0]]/z, [[VALS]].s, [[ZERO]]
+; VBITS_GE_2048-NEXT: add [[PTRS_ADD:z[0-9]+]].d, [[PG1]]/m, [[PTRS]].d, [[OFF]].d
+; VBITS_GE_2048-NEXT: uunpklo [[UPK:z[0-9]+]].d, [[VALS]].s
+; VBITS_GE_2048-NEXT: st1w { [[VALS]].d }, [[MASK]], {{\[}}[[PTRS_ADD]].d]
+; VBITS_GE_2048-NEXT: ret
+  %vals = load <32 x float>, <32 x float>* %a
+  %bases = load <32 x i8*>, <32 x i8*>* %b
+  %byte_ptrs = getelementptr i8, <32 x i8*> %bases, i64 4
+  %ptrs = bitcast <32 x i8*> %byte_ptrs to <32 x float*>
+  %mask = fcmp oeq <32 x float> %vals, zeroinitializer
+  call void @llvm.masked.scatter.v32f32(<32 x float> %vals, <32 x float*> %ptrs, i32 8, <32 x i1> %mask)
+  ret void
+}
+
+declare void @llvm.masked.scatter.v2i8(<2 x i8>, <2 x i8*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4i8(<4 x i8>, <4 x i8*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8i8(<8 x i8>, <8 x i8*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16i8(<16 x i8>, <16 x i8*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32i8(<32 x i8>, <32 x i8*>, i32, <32 x i1>)
+
+declare void @llvm.masked.scatter.v2i16(<2 x i16>, <2 x i16*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4i16(<4 x i16>, <4 x i16*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8i16(<8 x i16>, <8 x i16*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16i16(<16 x i16>, <16 x i16*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32i16(<32 x i16>, <32 x i16*>, i32, <32 x i1>)
+
+declare void @llvm.masked.scatter.v2i32(<2 x i32>, <2 x i32*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4i32(<4 x i32>, <4 x i32*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8i32(<8 x i32>, <8 x i32*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16i32(<16 x i32>, <16 x i32*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32i32(<32 x i32>, <32 x i32*>, i32, <32 x i1>)
+
+declare void @llvm.masked.scatter.v1i64(<1 x i64>, <1 x i64*>, i32, <1 x i1>)
+declare void @llvm.masked.scatter.v2i64(<2 x i64>, <2 x i64*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4i64(<4 x i64>, <4 x i64*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8i64(<8 x i64>, <8 x i64*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16i64(<16 x i64>, <16 x i64*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32i64(<32 x i64>, <32 x i64*>, i32, <32 x i1>)
+
+declare void @llvm.masked.scatter.v2f16(<2 x half>, <2 x half*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4f16(<4 x half>, <4 x half*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8f16(<8 x half>, <8 x half*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16f16(<16 x half>, <16 x half*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32f16(<32 x half>, <32 x half*>, i32, <32 x i1>)
+
+declare void @llvm.masked.scatter.v2f32(<2 x float>, <2 x float*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4f32(<4 x float>, <4 x float*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8f32(<8 x float>, <8 x float*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16f32(<16 x float>, <16 x float*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32f32(<32 x float>, <32 x float*>, i32, <32 x i1>)
+
+declare void @llvm.masked.scatter.v1f64(<1 x double>, <1 x double*>, i32, <1 x i1>)
+declare void @llvm.masked.scatter.v2f64(<2 x double>, <2 x double*>, i32, <2 x i1>)
+declare void @llvm.masked.scatter.v4f64(<4 x double>, <4 x double*>, i32, <4 x i1>)
+declare void @llvm.masked.scatter.v8f64(<8 x double>, <8 x double*>, i32, <8 x i1>)
+declare void @llvm.masked.scatter.v16f64(<16 x double>, <16 x double*>, i32, <16 x i1>)
+declare void @llvm.masked.scatter.v32f64(<32 x double>, <32 x double*>, i32, <32 x i1>)
+
+attributes #0 = { "target-features"="+sve" }

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

 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ld1sw { z0.d }, p0/z, [z0.d]
 ; CHECK-NEXT:    ret
   %vals = call <vscale x 2 x i32> @llvm.masked.gather.nxv2i32(<vscale x 2 x i32*> %ptrs, i32 4, <vscale x 2 x i1> %mask, <vscale x 2 x i32> undef)
   %vals.sext = sext <vscale x 2 x i32> %vals to <vscale x 2 x i64>
   ret <vscale x 2 x i64> %vals.sext
 }
 
+define <vscale x 2 x i64> @masked_gather_passthru(<vscale x 2 x i32*> %ptrs, <vscale x 2 x i1> %mask, <vscale x 2 x i32> %passthru) {
+; CHECK-LABEL: masked_gather_passthru:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ld1sw { z0.d }, p0/z, [z0.d]
+; CHECK-NEXT:    sel z0.d, p0, z0.d, z1.d
+; CHECK-NEXT:    ret
+  %vals = call <vscale x 2 x i32> @llvm.masked.gather.nxv2i32(<vscale x 2 x i32*> %ptrs, i32 4, <vscale x 2 x i1> %mask, <vscale x 2 x i32> %passthru)
+  %vals.sext = sext <vscale x 2 x i32> %vals to <vscale x 2 x i64>
+  ret <vscale x 2 x i64> %vals.sext
+}
+
+define <vscale x 2 x i64> @masked_gather_passthru_0(<vscale x 2 x i32*> %ptrs, <vscale x 2 x i1> %mask) {
+; CHECK-LABEL: masked_gather_passthru_0:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    ld1sw { z0.d }, p0/z, [z0.d]
+; CHECK-NEXT:    ret
+  %vals = call <vscale x 2 x i32> @llvm.masked.gather.nxv2i32(<vscale x 2 x i32*> %ptrs, i32 4, <vscale x 2 x i1> %mask, <vscale x 2 x i32> zeroinitializer)
+  %vals.sext = sext <vscale x 2 x i32> %vals to <vscale x 2 x i64>
+  ret <vscale x 2 x i64> %vals.sext
+}
+
 declare <vscale x 2 x i8> @llvm.masked.gather.nxv2i8(<vscale x 2 x i8*>, i32, <vscale x 2 x i1>, <vscale x 2 x i8>)
 declare <vscale x 2 x i16> @llvm.masked.gather.nxv2i16(<vscale x 2 x i16*>, i32, <vscale x 2 x i1>, <vscale x 2 x i16>)
 declare <vscale x 2 x i32> @llvm.masked.gather.nxv2i32(<vscale x 2 x i32*>, i32, <vscale x 2 x i1>, <vscale x 2 x i32>)
 declare <vscale x 2 x i64> @llvm.masked.gather.nxv2i64(<vscale x 2 x i64*>, i32, <vscale x 2 x i1>, <vscale x 2 x i64>)
 declare <vscale x 2 x half> @llvm.masked.gather.nxv2f16(<vscale x 2 x half*>, i32, <vscale x 2 x i1>, <vscale x 2 x half>)
 declare <vscale x 2 x bfloat> @llvm.masked.gather.nxv2bf16(<vscale x 2 x bfloat*>, i32, <vscale x 2 x i1>, <vscale x 2 x bfloat>)
 declare <vscale x 2 x float> @llvm.masked.gather.nxv2f32(<vscale x 2 x float*>, i32, <vscale x 2 x i1>, <vscale x 2 x float>)
 declare <vscale x 2 x double> @llvm.masked.gather.nxv2f64(<vscale x 2 x double*>, i32, <vscale x 2 x i1>, <vscale x 2 x double>)
 attributes #0 = { "target-features"="+sve,+bf16" }