[llvm] [Intrinsics][AArch64] Add intrinsic to mask off aliasing vector lanes (PR #117007)

Sam Tebbs via llvm-commits llvm-commits at lists.llvm.org
Thu Nov 21 05:54:21 PST 2024


https://github.com/SamTebbs33 updated https://github.com/llvm/llvm-project/pull/117007

>From dc3dba57e8cd76191ba03270d512f9931d4f4600 Mon Sep 17 00:00:00 2001
From: Sam Tebbs <samuel.tebbs at arm.com>
Date: Fri, 15 Nov 2024 10:24:46 +0000
Subject: [PATCH 1/2] [Intrinsics][AArch64] Add intrinsic to mask off aliasing
 vector lanes

It can be unsafe to load a vector from an address and write a vector to
an address if those two addresses have overlapping lanes within a
vectorised loop iteration.

This PR adds an intrinsic designed to create a mask with lanes disabled
if they overlap between the two pointer arguments, so that only safe
lanes are loaded, operated on and stored.

Along with the two pointer parameters, the intrinsic also takes an
immediate that represents the size in bytes of the vector element
types, as well as an immediate i1 that is true if there is a write
after-read-hazard or false if there is a read-after-write hazard.

This will be used by #100579 and replaces the existing lowering for
whilewr since that isn't needed now we have the intrinsic.
---
 llvm/docs/LangRef.rst                         |   80 ++
 llvm/include/llvm/CodeGen/TargetLowering.h    |    5 +
 llvm/include/llvm/IR/Intrinsics.td            |    5 +
 .../SelectionDAG/SelectionDAGBuilder.cpp      |   44 +
 .../Target/AArch64/AArch64ISelLowering.cpp    |  182 +--
 llvm/lib/Target/AArch64/AArch64ISelLowering.h |    6 +
 .../lib/Target/AArch64/AArch64SVEInstrInfo.td |    9 +-
 llvm/lib/Target/AArch64/SVEInstrFormats.td    |   10 +-
 llvm/test/CodeGen/AArch64/alias_mask.ll       |  421 +++++++
 .../CodeGen/AArch64/alias_mask_scalable.ll    |   82 ++
 llvm/test/CodeGen/AArch64/whilewr.ll          | 1086 -----------------
 11 files changed, 714 insertions(+), 1216 deletions(-)
 create mode 100644 llvm/test/CodeGen/AArch64/alias_mask.ll
 create mode 100644 llvm/test/CodeGen/AArch64/alias_mask_scalable.ll
 delete mode 100644 llvm/test/CodeGen/AArch64/whilewr.ll

diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index 9f4c90ba82a419..c9589d5af8ebbe 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -23475,6 +23475,86 @@ Examples:
       %active.lane.mask = call <4 x i1> @llvm.get.active.lane.mask.v4i1.i64(i64 %elem0, i64 429)
       %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %3, i32 4, <4 x i1> %active.lane.mask, <4 x i32> poison)
 
+.. _int_experimental_get_alias_lane_mask:
+
+'``llvm.get.alias.lane.mask.*``' Intrinsics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+This is an overloaded intrinsic.
+
+::
+
+      declare <4 x i1> @llvm.experimental.get.alias.lane.mask.v4i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <16 x i1> @llvm.experimental.get.alias.lane.mask.v16i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <vscale x 16 x i1> @llvm.experimental.get.alias.lane.mask.nxv16i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
+
+
+Overview:
+"""""""""
+
+Create a mask representing lanes that do or not overlap between two pointers across one vector loop iteration.
+
+
+Arguments:
+""""""""""
+
+The first two arguments have the same scalar integer type.
+The final two are immediates and the result is a vector with the i1 element type.
+
+Semantics:
+""""""""""
+
+In the case that ``%writeAfterRead`` is true, the '``llvm.experimental.get.alias.lane.mask.*``' intrinsics are semantically equivalent
+to:
+
+::
+
+      %diff = (%ptrB - %ptrA) / %elementSize
+      %m[i] = (icmp ult i, %diff) || (%diff <= 0)
+
+Otherwise they are semantically equivalent to:
+
+::
+
+      %diff = abs(%ptrB - %ptrA) / %elementSize
+      %m[i] = (icmp ult i, %diff) || (%diff == 0)
+
+where ``%m`` is a vector (mask) of active/inactive lanes with its elements
+indexed by ``i``,  and ``%ptrA``, ``%ptrB`` are the two i64 arguments to
+``llvm.experimental.get.alias.lane.mask.*``, ``%elementSize`` is the i32 argument, ``%abs`` is the absolute difference operation, ``%icmp`` is an integer compare and ``ult``
+the unsigned less-than comparison operator. The subtraction between ``%ptrA`` and ``%ptrB`` could be negative. The ``%writeAfterRead`` argument is expected to be true if the ``%ptrB`` is stored to after ``%ptrA`` is read from.
+The above is equivalent to:
+
+::
+
+      %m = @llvm.experimental.get.alias.lane.mask(%ptrA, %ptrB, %elementSize, %writeAfterRead)
+
+This can, for example, be emitted by the loop vectorizer in which case
+``%ptrA`` is a pointer that is read from within the loop, and ``%ptrB`` is a pointer that is stored to within the loop.
+If the difference between these pointers is less than the vector factor, then they overlap (alias) within a loop iteration.
+An example is if ``%ptrA`` is 20 and ``%ptrB`` is 23 with a vector factor of 8, then lanes 3, 4, 5, 6 and 7 of the vector loaded from ``%ptrA``
+share addresses with lanes 0, 1, 2, 3, 4 and 5 from the vector stored to at ``%ptrB``.
+An alias mask of these two pointers should be <1, 1, 1, 0, 0, 0, 0, 0> so that only the non-overlapping lanes are loaded and stored.
+This operation allows many loops to be vectorised when it would otherwise be unsafe to do so.
+
+To account for the fact that only a subset of lanes have been operated on in an iteration,
+the loop's induction variable should be incremented by the popcount of the mask rather than the vector factor.
+
+This mask ``%m`` can e.g. be used in masked load/store instructions.
+
+
+Examples:
+"""""""""
+
+.. code-block:: llvm
+
+      %alias.lane.mask = call <4 x i1> @llvm.experimental.get.alias.lane.mask.v4i1.i64(i64 %ptrA, i64 %ptrB, i32 4, i1 1)
+      %vecA = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %ptrA, i32 4, <4 x i1> %alias.lane.mask, <4 x i32> poison)
+      [...]
+      call @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %vecA, <4 x i32>* %ptrB, i32 4, <4 x i1> %alias.lane.mask)
 
 .. _int_experimental_vp_splice:
 
diff --git a/llvm/include/llvm/CodeGen/TargetLowering.h b/llvm/include/llvm/CodeGen/TargetLowering.h
index 6a41094ff933b0..0338310fd936df 100644
--- a/llvm/include/llvm/CodeGen/TargetLowering.h
+++ b/llvm/include/llvm/CodeGen/TargetLowering.h
@@ -468,6 +468,11 @@ class TargetLoweringBase {
     return true;
   }
 
+  /// Return true if the @llvm.experimental.get.alias.lane.mask intrinsic should be expanded using generic code in SelectionDAGBuilder.
+  virtual bool shouldExpandGetAliasLaneMask(EVT VT, EVT PtrVT, unsigned EltSize) const {
+    return true;
+  }
+
   virtual bool shouldExpandGetVectorLength(EVT CountVT, unsigned VF,
                                            bool IsScalable) const {
     return true;
diff --git a/llvm/include/llvm/IR/Intrinsics.td b/llvm/include/llvm/IR/Intrinsics.td
index 1ca8c2565ab0b6..5f7073a531283e 100644
--- a/llvm/include/llvm/IR/Intrinsics.td
+++ b/llvm/include/llvm/IR/Intrinsics.td
@@ -2363,6 +2363,11 @@ let IntrProperties = [IntrNoMem, IntrNoSync, IntrWillReturn, ImmArg<ArgIndex<1>>
                                     llvm_i32_ty]>;
 }
 
+def int_experimental_get_alias_lane_mask:
+  DefaultAttrsIntrinsic<[llvm_anyvector_ty],
+            [llvm_anyint_ty, LLVMMatchType<1>, llvm_anyint_ty, llvm_i1_ty],
+            [IntrNoMem, IntrNoSync, IntrWillReturn, ImmArg<ArgIndex<2>>, ImmArg<ArgIndex<3>>]>;
+
 def int_get_active_lane_mask:
   DefaultAttrsIntrinsic<[llvm_anyvector_ty],
             [llvm_anyint_ty, LLVMMatchType<1>],
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 9d729d448502d8..39e84e06a8de60 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -8284,6 +8284,50 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I,
     visitVectorExtractLastActive(I, Intrinsic);
     return;
   }
+  case Intrinsic::experimental_get_alias_lane_mask: {
+    SDValue SourceValue = getValue(I.getOperand(0));
+    SDValue SinkValue = getValue(I.getOperand(1));
+    SDValue EltSize = getValue(I.getOperand(2));
+    bool IsWriteAfterRead = cast<ConstantSDNode>(getValue(I.getOperand(3)))->getZExtValue() != 0;
+    auto IntrinsicVT = EVT::getEVT(I.getType());
+    auto PtrVT = SourceValue->getValueType(0);
+
+    if (!TLI.shouldExpandGetAliasLaneMask(IntrinsicVT, PtrVT, cast<ConstantSDNode>(EltSize)->getSExtValue())) {
+      visitTargetIntrinsic(I, Intrinsic);
+      return;
+    }
+
+    SDValue Diff = DAG.getNode(ISD::SUB, sdl,
+                              PtrVT, SinkValue, SourceValue);
+    if (!IsWriteAfterRead)
+      Diff = DAG.getNode(ISD::ABS, sdl, PtrVT, Diff);
+
+    Diff = DAG.getNode(ISD::SDIV, sdl, PtrVT, Diff, EltSize);
+    SDValue Zero = DAG.getTargetConstant(0, sdl, PtrVT);
+
+    // If the difference is positive then some elements may alias
+    auto CmpVT = TLI.getSetCCResultType(DAG.getDataLayout(), *DAG.getContext(),
+                                   PtrVT);
+    SDValue Cmp = DAG.getSetCC(sdl, CmpVT, Diff, Zero, IsWriteAfterRead ? ISD::SETLE : ISD::SETEQ);
+
+    // Splat the compare result then OR it with a lane mask
+    SDValue Splat = DAG.getSplat(IntrinsicVT, sdl, Cmp);
+
+    SDValue DiffMask;
+    // Don't emit an active lane mask if the target doesn't support it
+    if (TLI.shouldExpandGetActiveLaneMask(IntrinsicVT, PtrVT)) {
+        EVT VecTy = EVT::getVectorVT(*DAG.getContext(), PtrVT,
+                                     IntrinsicVT.getVectorElementCount());
+        SDValue DiffSplat = DAG.getSplat(VecTy, sdl, Diff);
+        SDValue VectorStep = DAG.getStepVector(sdl, VecTy);
+        DiffMask = DAG.getSetCC(sdl, IntrinsicVT, VectorStep,
+                                     DiffSplat, ISD::CondCode::SETULT);
+    } else {
+      DiffMask = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, sdl, IntrinsicVT, DAG.getTargetConstant(Intrinsic::get_active_lane_mask, sdl, MVT::i64), Zero, Diff);
+    }
+    SDValue Or = DAG.getNode(ISD::OR, sdl, IntrinsicVT, DiffMask, Splat);
+    setValue(&I, Or);
+  }
   }
 }
 
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 7ab3fc06715ec8..66eaec0d5ae6c9 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -2033,6 +2033,24 @@ bool AArch64TargetLowering::shouldExpandGetActiveLaneMask(EVT ResVT,
   return false;
 }
 
+bool AArch64TargetLowering::shouldExpandGetAliasLaneMask(EVT VT, EVT PtrVT, unsigned EltSize) const {
+  if (!Subtarget->hasSVE2())
+    return true;
+
+  if (PtrVT != MVT::i64)
+    return true;
+
+  if (VT == MVT::v2i1 || VT == MVT::nxv2i1)
+    return EltSize != 8;
+  if( VT == MVT::v4i1 || VT == MVT::nxv4i1)
+    return EltSize != 4;
+  if (VT == MVT::v8i1 || VT == MVT::nxv8i1)
+    return EltSize != 2;
+  if (VT == MVT::v16i1 || VT == MVT::nxv16i1)
+    return EltSize != 1;
+  return true;
+}
+
 bool AArch64TargetLowering::shouldExpandPartialReductionIntrinsic(
     const IntrinsicInst *I) const {
   if (I->getIntrinsicID() != Intrinsic::experimental_vector_partial_reduce_add)
@@ -2796,6 +2814,8 @@ const char *AArch64TargetLowering::getTargetNodeName(unsigned Opcode) const {
     MAKE_CASE(AArch64ISD::LS64_BUILD)
     MAKE_CASE(AArch64ISD::LS64_EXTRACT)
     MAKE_CASE(AArch64ISD::TBL)
+    MAKE_CASE(AArch64ISD::WHILEWR)
+    MAKE_CASE(AArch64ISD::WHILERW)
     MAKE_CASE(AArch64ISD::FADD_PRED)
     MAKE_CASE(AArch64ISD::FADDA_PRED)
     MAKE_CASE(AArch64ISD::FADDV_PRED)
@@ -5881,6 +5901,16 @@ SDValue AArch64TargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
     EVT PtrVT = getPointerTy(DAG.getDataLayout());
     return DAG.getNode(AArch64ISD::THREAD_POINTER, dl, PtrVT);
   }
+  case Intrinsic::aarch64_sve_whilewr_b:
+  case Intrinsic::aarch64_sve_whilewr_h:
+  case Intrinsic::aarch64_sve_whilewr_s:
+  case Intrinsic::aarch64_sve_whilewr_d:
+    return DAG.getNode(AArch64ISD::WHILEWR, dl, Op.getValueType(), Op.getOperand(1), Op.getOperand(2));
+  case Intrinsic::aarch64_sve_whilerw_b:
+  case Intrinsic::aarch64_sve_whilerw_h:
+  case Intrinsic::aarch64_sve_whilerw_s:
+  case Intrinsic::aarch64_sve_whilerw_d:
+    return DAG.getNode(AArch64ISD::WHILERW, dl, Op.getValueType(), Op.getOperand(1), Op.getOperand(2));
   case Intrinsic::aarch64_neon_abs: {
     EVT Ty = Op.getValueType();
     if (Ty == MVT::i64) {
@@ -6340,16 +6370,39 @@ SDValue AArch64TargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
     return DAG.getNode(AArch64ISD::USDOT, dl, Op.getValueType(),
                        Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));
   }
+  case Intrinsic::experimental_get_alias_lane_mask:
   case Intrinsic::get_active_lane_mask: {
+    unsigned IntrinsicID = Intrinsic::aarch64_sve_whilelo;
+    if (IntNo == Intrinsic::experimental_get_alias_lane_mask) {
+      uint64_t EltSize = Op.getOperand(3)->getAsZExtVal();
+      bool IsWriteAfterRead = Op.getOperand(4)->getAsZExtVal() == 1;
+      switch (EltSize) {
+        case 1:
+          IntrinsicID = IsWriteAfterRead ? Intrinsic::aarch64_sve_whilewr_b : Intrinsic::aarch64_sve_whilerw_b;
+          break;
+        case 2:
+          IntrinsicID = IsWriteAfterRead ? Intrinsic::aarch64_sve_whilewr_h : Intrinsic::aarch64_sve_whilerw_h;
+          break;
+        case 4:
+          IntrinsicID = IsWriteAfterRead ? Intrinsic::aarch64_sve_whilewr_s : Intrinsic::aarch64_sve_whilerw_s;
+          break;
+        case 8:
+          IntrinsicID = IsWriteAfterRead ? Intrinsic::aarch64_sve_whilewr_d : Intrinsic::aarch64_sve_whilerw_d;
+          break;
+        default:
+          llvm_unreachable("Unexpected element size for get.alias.lane.mask");
+          break;
+      }
+    }
     SDValue ID =
-        DAG.getTargetConstant(Intrinsic::aarch64_sve_whilelo, dl, MVT::i64);
+        DAG.getTargetConstant(IntrinsicID, dl, MVT::i64);
 
     EVT VT = Op.getValueType();
     if (VT.isScalableVector())
       return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT, ID, Op.getOperand(1),
                          Op.getOperand(2));
 
-    // We can use the SVE whilelo instruction to lower this intrinsic by
+    // We can use the SVE whilelo/whilewr/whilerw instruction to lower this intrinsic by
     // creating the appropriate sequence of scalable vector operations and
     // then extracting a fixed-width subvector from the scalable vector.
 
@@ -14241,128 +14294,8 @@ static SDValue tryLowerToSLI(SDNode *N, SelectionDAG &DAG) {
   return ResultSLI;
 }
 
-/// Try to lower the construction of a pointer alias mask to a WHILEWR.
-/// The mask's enabled lanes represent the elements that will not overlap across
-/// one loop iteration. This tries to match:
-/// or (splat (setcc_lt (sub ptrA, ptrB), -(element_size - 1))),
-///    (get_active_lane_mask 0, (div (sub ptrA, ptrB), element_size))
-SDValue tryWhileWRFromOR(SDValue Op, SelectionDAG &DAG,
-                         const AArch64Subtarget &Subtarget) {
-  if (!Subtarget.hasSVE2())
-    return SDValue();
-  SDValue LaneMask = Op.getOperand(0);
-  SDValue Splat = Op.getOperand(1);
-
-  if (Splat.getOpcode() != ISD::SPLAT_VECTOR)
-    std::swap(LaneMask, Splat);
-
-  if (LaneMask.getOpcode() != ISD::INTRINSIC_WO_CHAIN ||
-      LaneMask.getConstantOperandVal(0) != Intrinsic::get_active_lane_mask ||
-      Splat.getOpcode() != ISD::SPLAT_VECTOR)
-    return SDValue();
-
-  SDValue Cmp = Splat.getOperand(0);
-  if (Cmp.getOpcode() != ISD::SETCC)
-    return SDValue();
-
-  CondCodeSDNode *Cond = cast<CondCodeSDNode>(Cmp.getOperand(2));
-
-  auto ComparatorConst = dyn_cast<ConstantSDNode>(Cmp.getOperand(1));
-  if (!ComparatorConst || ComparatorConst->getSExtValue() > 0 ||
-      Cond->get() != ISD::CondCode::SETLT)
-    return SDValue();
-  unsigned CompValue = std::abs(ComparatorConst->getSExtValue());
-  unsigned EltSize = CompValue + 1;
-  if (!isPowerOf2_64(EltSize) || EltSize > 8)
-    return SDValue();
-
-  SDValue Diff = Cmp.getOperand(0);
-  if (Diff.getOpcode() != ISD::SUB || Diff.getValueType() != MVT::i64)
-    return SDValue();
-
-  if (!isNullConstant(LaneMask.getOperand(1)) ||
-      (EltSize != 1 && LaneMask.getOperand(2).getOpcode() != ISD::SRA))
-    return SDValue();
-
-  // The number of elements that alias is calculated by dividing the positive
-  // difference between the pointers by the element size. An alias mask for i8
-  // elements omits the division because it would just divide by 1
-  if (EltSize > 1) {
-    SDValue DiffDiv = LaneMask.getOperand(2);
-    auto DiffDivConst = dyn_cast<ConstantSDNode>(DiffDiv.getOperand(1));
-    if (!DiffDivConst || DiffDivConst->getZExtValue() != Log2_64(EltSize))
-      return SDValue();
-    if (EltSize > 2) {
-      // When masking i32 or i64 elements, the positive value of the
-      // possibly-negative difference comes from a select of the difference if
-      // it's positive, otherwise the difference plus the element size if it's
-      // negative: pos_diff = diff < 0 ? (diff + 7) : diff
-      SDValue Select = DiffDiv.getOperand(0);
-      // Make sure the difference is being compared by the select
-      if (Select.getOpcode() != ISD::SELECT_CC || Select.getOperand(3) != Diff)
-        return SDValue();
-      // Make sure it's checking if the difference is less than 0
-      if (!isNullConstant(Select.getOperand(1)) ||
-          cast<CondCodeSDNode>(Select.getOperand(4))->get() !=
-              ISD::CondCode::SETLT)
-        return SDValue();
-      // An add creates a positive value from the negative difference
-      SDValue Add = Select.getOperand(2);
-      if (Add.getOpcode() != ISD::ADD || Add.getOperand(0) != Diff)
-        return SDValue();
-      if (auto *AddConst = dyn_cast<ConstantSDNode>(Add.getOperand(1));
-          !AddConst || AddConst->getZExtValue() != EltSize - 1)
-        return SDValue();
-    } else {
-      // When masking i16 elements, this positive value comes from adding the
-      // difference's sign bit to the difference itself. This is equivalent to
-      // the 32 bit and 64 bit case: pos_diff = diff + sign_bit (diff)
-      SDValue Add = DiffDiv.getOperand(0);
-      if (Add.getOpcode() != ISD::ADD || Add.getOperand(0) != Diff)
-        return SDValue();
-      // A logical right shift by 63 extracts the sign bit from the difference
-      SDValue Shift = Add.getOperand(1);
-      if (Shift.getOpcode() != ISD::SRL || Shift.getOperand(0) != Diff)
-        return SDValue();
-      if (auto *ShiftConst = dyn_cast<ConstantSDNode>(Shift.getOperand(1));
-          !ShiftConst || ShiftConst->getZExtValue() != 63)
-        return SDValue();
-    }
-  } else if (LaneMask.getOperand(2) != Diff)
-    return SDValue();
-
-  SDValue StorePtr = Diff.getOperand(0);
-  SDValue ReadPtr = Diff.getOperand(1);
-
-  unsigned IntrinsicID = 0;
-  switch (EltSize) {
-  case 1:
-    IntrinsicID = Intrinsic::aarch64_sve_whilewr_b;
-    break;
-  case 2:
-    IntrinsicID = Intrinsic::aarch64_sve_whilewr_h;
-    break;
-  case 4:
-    IntrinsicID = Intrinsic::aarch64_sve_whilewr_s;
-    break;
-  case 8:
-    IntrinsicID = Intrinsic::aarch64_sve_whilewr_d;
-    break;
-  default:
-    return SDValue();
-  }
-  SDLoc DL(Op);
-  SDValue ID = DAG.getConstant(IntrinsicID, DL, MVT::i32);
-  return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, Op.getValueType(), ID,
-                     StorePtr, ReadPtr);
-}
-
 SDValue AArch64TargetLowering::LowerVectorOR(SDValue Op,
                                              SelectionDAG &DAG) const {
-  if (SDValue SV =
-          tryWhileWRFromOR(Op, DAG, DAG.getSubtarget<AArch64Subtarget>()))
-    return SV;
-
   if (useSVEForFixedLengthVectorVT(Op.getValueType(),
                                    !Subtarget->isNeonAvailable()))
     return LowerToScalableOp(Op, DAG);
@@ -19609,7 +19542,9 @@ static bool isPredicateCCSettingOp(SDValue N) {
         N.getConstantOperandVal(0) == Intrinsic::aarch64_sve_whilels ||
         N.getConstantOperandVal(0) == Intrinsic::aarch64_sve_whilelt ||
         // get_active_lane_mask is lowered to a whilelo instruction.
-        N.getConstantOperandVal(0) == Intrinsic::get_active_lane_mask)))
+        N.getConstantOperandVal(0) == Intrinsic::get_active_lane_mask ||
+        // get_alias_lane_mask is lowered to a whilewr/rw instruction.
+        N.getConstantOperandVal(0) == Intrinsic::experimental_get_alias_lane_mask)))
     return true;
 
   return false;
@@ -27175,6 +27110,7 @@ void AArch64TargetLowering::ReplaceNodeResults(
       return;
     }
     case Intrinsic::experimental_vector_match:
+    case Intrinsic::experimental_get_alias_lane_mask:
     case Intrinsic::get_active_lane_mask: {
       if (!VT.isFixedLengthVector() || VT.getVectorElementType() != MVT::i1)
         return;
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.h b/llvm/lib/Target/AArch64/AArch64ISelLowering.h
index cb0b9e965277aa..b2f766b22911ff 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.h
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.h
@@ -297,6 +297,10 @@ enum NodeType : unsigned {
   SMAXV,
   UMAXV,
 
+  // Alias lane masks
+  WHILEWR,
+  WHILERW,
+
   SADDV_PRED,
   UADDV_PRED,
   SMAXV_PRED,
@@ -980,6 +984,8 @@ class AArch64TargetLowering : public TargetLowering {
 
   bool shouldExpandGetActiveLaneMask(EVT VT, EVT OpVT) const override;
 
+  bool shouldExpandGetAliasLaneMask(EVT VT, EVT PtrVT, unsigned EltSize) const override;
+
   bool
   shouldExpandPartialReductionIntrinsic(const IntrinsicInst *I) const override;
 
diff --git a/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td b/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
index 564fb33758ad57..99b1e0618ab34b 100644
--- a/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
@@ -140,6 +140,11 @@ def AArch64st1q_scatter : SDNode<"AArch64ISD::SST1Q_PRED", SDT_AArch64_SCATTER_V
 // AArch64 SVE/SVE2 - the remaining node definitions
 //
 
+// Alias masks
+def SDT_AArch64Mask : SDTypeProfile<1, 2, [SDTCisVec<0>, SDTCisInt<1>, SDTCisSameAs<2, 1>, SDTCVecEltisVT<0,i1>]>;
+def AArch64whilewr : SDNode<"AArch64ISD::WHILEWR", SDT_AArch64Mask>;
+def AArch64whilerw : SDNode<"AArch64ISD::WHILERW", SDT_AArch64Mask>;
+
 // SVE CNT/INC/RDVL
 def sve_rdvl_imm : ComplexPattern<i64, 1, "SelectRDVLImm<-32, 31, 16>">;
 def sve_cnth_imm : ComplexPattern<i64, 1, "SelectRDVLImm<1, 16, 8>">;
@@ -3913,8 +3918,8 @@ let Predicates = [HasSVE2orSME] in {
   defm WHILEHI_PXX : sve_int_while8_rr<0b101, "whilehi", int_aarch64_sve_whilehi, int_aarch64_sve_whilelo>;
 
   // SVE2 pointer conflict compare
-  defm WHILEWR_PXX : sve2_int_while_rr<0b0, "whilewr", "int_aarch64_sve_whilewr">;
-  defm WHILERW_PXX : sve2_int_while_rr<0b1, "whilerw", "int_aarch64_sve_whilerw">;
+  defm WHILEWR_PXX : sve2_int_while_rr<0b0, "whilewr", AArch64whilewr>;
+  defm WHILERW_PXX : sve2_int_while_rr<0b1, "whilerw", AArch64whilerw>;
 } // End HasSVE2orSME
 
 let Predicates = [HasSVEAES, HasNonStreamingSVE2orSSVE_AES] in {
diff --git a/llvm/lib/Target/AArch64/SVEInstrFormats.td b/llvm/lib/Target/AArch64/SVEInstrFormats.td
index 1ddb913f013f5e..a0d5bb1504089d 100644
--- a/llvm/lib/Target/AArch64/SVEInstrFormats.td
+++ b/llvm/lib/Target/AArch64/SVEInstrFormats.td
@@ -5765,16 +5765,16 @@ class sve2_int_while_rr<bits<2> sz8_64, bits<1> rw, string asm,
   let isWhile = 1;
 }
 
-multiclass sve2_int_while_rr<bits<1> rw, string asm, string op> {
+multiclass sve2_int_while_rr<bits<1> rw, string asm, SDPatternOperator op> {
   def _B : sve2_int_while_rr<0b00, rw, asm, PPR8>;
   def _H : sve2_int_while_rr<0b01, rw, asm, PPR16>;
   def _S : sve2_int_while_rr<0b10, rw, asm, PPR32>;
   def _D : sve2_int_while_rr<0b11, rw, asm, PPR64>;
 
-  def : SVE_2_Op_Pat<nxv16i1, !cast<SDPatternOperator>(op # _b), i64, i64, !cast<Instruction>(NAME # _B)>;
-  def : SVE_2_Op_Pat<nxv8i1,  !cast<SDPatternOperator>(op # _h), i64, i64, !cast<Instruction>(NAME # _H)>;
-  def : SVE_2_Op_Pat<nxv4i1,  !cast<SDPatternOperator>(op # _s), i64, i64, !cast<Instruction>(NAME # _S)>;
-  def : SVE_2_Op_Pat<nxv2i1,  !cast<SDPatternOperator>(op # _d), i64, i64, !cast<Instruction>(NAME # _D)>;
+  def : SVE_2_Op_Pat<nxv16i1, op, i64, i64, !cast<Instruction>(NAME # _B)>;
+  def : SVE_2_Op_Pat<nxv8i1,  op, i64, i64, !cast<Instruction>(NAME # _H)>;
+  def : SVE_2_Op_Pat<nxv4i1,  op, i64, i64, !cast<Instruction>(NAME # _S)>;
+  def : SVE_2_Op_Pat<nxv2i1,  op, i64, i64, !cast<Instruction>(NAME # _D)>;
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/llvm/test/CodeGen/AArch64/alias_mask.ll b/llvm/test/CodeGen/AArch64/alias_mask.ll
new file mode 100644
index 00000000000000..59ad2bf82db92e
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/alias_mask.ll
@@ -0,0 +1,421 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=aarch64 -mattr=+sve2 %s | FileCheck %s --check-prefix=CHECK-SVE
+; RUN: llc -mtriple=aarch64 %s | FileCheck %s --check-prefix=CHECK-NOSVE
+
+define <16 x i1> @whilewr_8(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilewr_8:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilewr p0.b, x0, x1
+; CHECK-SVE-NEXT:    mov z0.b, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $q0 killed $q0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilewr_8:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI0_0
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI0_1
+; CHECK-NOSVE-NEXT:    sub x9, x1, x0
+; CHECK-NOSVE-NEXT:    ldr q0, [x8, :lo12:.LCPI0_0]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI0_2
+; CHECK-NOSVE-NEXT:    ldr q1, [x10, :lo12:.LCPI0_1]
+; CHECK-NOSVE-NEXT:    ldr q3, [x8, :lo12:.LCPI0_2]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI0_4
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI0_3
+; CHECK-NOSVE-NEXT:    ldr q5, [x8, :lo12:.LCPI0_4]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI0_5
+; CHECK-NOSVE-NEXT:    dup v2.2d, x9
+; CHECK-NOSVE-NEXT:    ldr q4, [x10, :lo12:.LCPI0_3]
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI0_6
+; CHECK-NOSVE-NEXT:    ldr q6, [x8, :lo12:.LCPI0_5]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI0_7
+; CHECK-NOSVE-NEXT:    ldr q7, [x10, :lo12:.LCPI0_6]
+; CHECK-NOSVE-NEXT:    cmp x9, #1
+; CHECK-NOSVE-NEXT:    ldr q16, [x8, :lo12:.LCPI0_7]
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v2.2d, v0.2d
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v2.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v3.2d, v2.2d, v3.2d
+; CHECK-NOSVE-NEXT:    cmhi v4.2d, v2.2d, v4.2d
+; CHECK-NOSVE-NEXT:    cmhi v5.2d, v2.2d, v5.2d
+; CHECK-NOSVE-NEXT:    cmhi v6.2d, v2.2d, v6.2d
+; CHECK-NOSVE-NEXT:    cmhi v7.2d, v2.2d, v7.2d
+; CHECK-NOSVE-NEXT:    cmhi v2.2d, v2.2d, v16.2d
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v1.4s, v0.4s
+; CHECK-NOSVE-NEXT:    cset w8, lt
+; CHECK-NOSVE-NEXT:    uzp1 v1.4s, v4.4s, v3.4s
+; CHECK-NOSVE-NEXT:    uzp1 v3.4s, v6.4s, v5.4s
+; CHECK-NOSVE-NEXT:    uzp1 v2.4s, v2.4s, v7.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.8h, v1.8h, v0.8h
+; CHECK-NOSVE-NEXT:    uzp1 v1.8h, v2.8h, v3.8h
+; CHECK-NOSVE-NEXT:    uzp1 v0.16b, v1.16b, v0.16b
+; CHECK-NOSVE-NEXT:    dup v1.16b, w8
+; CHECK-NOSVE-NEXT:    orr v0.16b, v0.16b, v1.16b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <16 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 1, i1 1)
+  ret <16 x i1> %0
+}
+
+define <8 x i1> @whilewr_16(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilewr_16:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilewr p0.b, x0, x1
+; CHECK-SVE-NEXT:    mov z0.b, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $d0 killed $d0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilewr_16:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    sub x8, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI1_0
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI1_1
+; CHECK-NOSVE-NEXT:    add x8, x8, x8, lsr #63
+; CHECK-NOSVE-NEXT:    adrp x11, .LCPI1_2
+; CHECK-NOSVE-NEXT:    ldr q1, [x9, :lo12:.LCPI1_0]
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI1_3
+; CHECK-NOSVE-NEXT:    ldr q2, [x10, :lo12:.LCPI1_1]
+; CHECK-NOSVE-NEXT:    ldr q3, [x11, :lo12:.LCPI1_2]
+; CHECK-NOSVE-NEXT:    asr x8, x8, #1
+; CHECK-NOSVE-NEXT:    ldr q4, [x9, :lo12:.LCPI1_3]
+; CHECK-NOSVE-NEXT:    dup v0.2d, x8
+; CHECK-NOSVE-NEXT:    cmp x8, #1
+; CHECK-NOSVE-NEXT:    cset w8, lt
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v0.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v2.2d, v0.2d, v2.2d
+; CHECK-NOSVE-NEXT:    cmhi v3.2d, v0.2d, v3.2d
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v0.2d, v4.2d
+; CHECK-NOSVE-NEXT:    uzp1 v1.4s, v2.4s, v1.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v0.4s, v3.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.8h, v0.8h, v1.8h
+; CHECK-NOSVE-NEXT:    dup v1.8b, w8
+; CHECK-NOSVE-NEXT:    xtn v0.8b, v0.8h
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 2, i1 1)
+  ret <8 x i1> %0
+}
+
+define <4 x i1> @whilewr_32(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilewr_32:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilewr p0.h, x0, x1
+; CHECK-SVE-NEXT:    mov z0.h, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $d0 killed $d0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilewr_32:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    sub x9, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI2_0
+; CHECK-NOSVE-NEXT:    add x10, x9, #3
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    ldr q1, [x8, :lo12:.LCPI2_0]
+; CHECK-NOSVE-NEXT:    csel x9, x10, x9, lt
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI2_1
+; CHECK-NOSVE-NEXT:    asr x9, x9, #2
+; CHECK-NOSVE-NEXT:    ldr q2, [x10, :lo12:.LCPI2_1]
+; CHECK-NOSVE-NEXT:    dup v0.2d, x9
+; CHECK-NOSVE-NEXT:    cmp x9, #1
+; CHECK-NOSVE-NEXT:    cset w8, lt
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v0.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v0.2d, v2.2d
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v0.4s, v1.4s
+; CHECK-NOSVE-NEXT:    dup v1.4h, w8
+; CHECK-NOSVE-NEXT:    xtn v0.4h, v0.4s
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <4 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 4, i1 1)
+  ret <4 x i1> %0
+}
+
+define <2 x i1> @whilewr_64(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilewr_64:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilewr p0.s, x0, x1
+; CHECK-SVE-NEXT:    mov z0.s, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $d0 killed $d0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilewr_64:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    sub x9, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI3_0
+; CHECK-NOSVE-NEXT:    add x10, x9, #7
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    ldr q1, [x8, :lo12:.LCPI3_0]
+; CHECK-NOSVE-NEXT:    csel x9, x10, x9, lt
+; CHECK-NOSVE-NEXT:    asr x9, x9, #3
+; CHECK-NOSVE-NEXT:    dup v0.2d, x9
+; CHECK-NOSVE-NEXT:    cmp x9, #1
+; CHECK-NOSVE-NEXT:    cset w8, lt
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v0.2d, v1.2d
+; CHECK-NOSVE-NEXT:    dup v1.2s, w8
+; CHECK-NOSVE-NEXT:    xtn v0.2s, v0.2d
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <2 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 8, i1 1)
+  ret <2 x i1> %0
+}
+
+define <16 x i1> @whilerw_8(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilerw_8:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilerw p0.b, x0, x1
+; CHECK-SVE-NEXT:    mov z0.b, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $q0 killed $q0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilerw_8:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI4_0
+; CHECK-NOSVE-NEXT:    subs x9, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI4_1
+; CHECK-NOSVE-NEXT:    ldr q0, [x8, :lo12:.LCPI4_0]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI4_2
+; CHECK-NOSVE-NEXT:    cneg x9, x9, mi
+; CHECK-NOSVE-NEXT:    ldr q2, [x8, :lo12:.LCPI4_2]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI4_3
+; CHECK-NOSVE-NEXT:    ldr q1, [x10, :lo12:.LCPI4_1]
+; CHECK-NOSVE-NEXT:    ldr q4, [x8, :lo12:.LCPI4_3]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI4_4
+; CHECK-NOSVE-NEXT:    dup v3.2d, x9
+; CHECK-NOSVE-NEXT:    ldr q5, [x8, :lo12:.LCPI4_4]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI4_5
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI4_6
+; CHECK-NOSVE-NEXT:    ldr q6, [x8, :lo12:.LCPI4_5]
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI4_7
+; CHECK-NOSVE-NEXT:    ldr q7, [x10, :lo12:.LCPI4_6]
+; CHECK-NOSVE-NEXT:    ldr q16, [x8, :lo12:.LCPI4_7]
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v3.2d, v0.2d
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v3.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v2.2d, v3.2d, v2.2d
+; CHECK-NOSVE-NEXT:    cmhi v4.2d, v3.2d, v4.2d
+; CHECK-NOSVE-NEXT:    cmhi v5.2d, v3.2d, v5.2d
+; CHECK-NOSVE-NEXT:    cmhi v6.2d, v3.2d, v6.2d
+; CHECK-NOSVE-NEXT:    cmhi v7.2d, v3.2d, v7.2d
+; CHECK-NOSVE-NEXT:    cmhi v3.2d, v3.2d, v16.2d
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v1.4s, v0.4s
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    uzp1 v1.4s, v4.4s, v2.4s
+; CHECK-NOSVE-NEXT:    cset w8, eq
+; CHECK-NOSVE-NEXT:    uzp1 v2.4s, v6.4s, v5.4s
+; CHECK-NOSVE-NEXT:    uzp1 v3.4s, v3.4s, v7.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.8h, v1.8h, v0.8h
+; CHECK-NOSVE-NEXT:    uzp1 v1.8h, v3.8h, v2.8h
+; CHECK-NOSVE-NEXT:    uzp1 v0.16b, v1.16b, v0.16b
+; CHECK-NOSVE-NEXT:    dup v1.16b, w8
+; CHECK-NOSVE-NEXT:    orr v0.16b, v0.16b, v1.16b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <16 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 1, i1 0)
+  ret <16 x i1> %0
+}
+
+define <8 x i1> @whilerw_16(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilerw_16:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilerw p0.b, x0, x1
+; CHECK-SVE-NEXT:    mov z0.b, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $d0 killed $d0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilerw_16:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    subs x8, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI5_0
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI5_1
+; CHECK-NOSVE-NEXT:    cneg x8, x8, mi
+; CHECK-NOSVE-NEXT:    adrp x11, .LCPI5_2
+; CHECK-NOSVE-NEXT:    ldr q1, [x9, :lo12:.LCPI5_0]
+; CHECK-NOSVE-NEXT:    add x8, x8, x8, lsr #63
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI5_3
+; CHECK-NOSVE-NEXT:    ldr q2, [x10, :lo12:.LCPI5_1]
+; CHECK-NOSVE-NEXT:    ldr q3, [x11, :lo12:.LCPI5_2]
+; CHECK-NOSVE-NEXT:    ldr q4, [x9, :lo12:.LCPI5_3]
+; CHECK-NOSVE-NEXT:    asr x8, x8, #1
+; CHECK-NOSVE-NEXT:    dup v0.2d, x8
+; CHECK-NOSVE-NEXT:    cmp x8, #0
+; CHECK-NOSVE-NEXT:    cset w8, eq
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v0.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v2.2d, v0.2d, v2.2d
+; CHECK-NOSVE-NEXT:    cmhi v3.2d, v0.2d, v3.2d
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v0.2d, v4.2d
+; CHECK-NOSVE-NEXT:    uzp1 v1.4s, v2.4s, v1.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v0.4s, v3.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.8h, v0.8h, v1.8h
+; CHECK-NOSVE-NEXT:    dup v1.8b, w8
+; CHECK-NOSVE-NEXT:    xtn v0.8b, v0.8h
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 2, i1 0)
+  ret <8 x i1> %0
+}
+
+define <4 x i1> @whilerw_32(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilerw_32:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilerw p0.h, x0, x1
+; CHECK-SVE-NEXT:    mov z0.h, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $d0 killed $d0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilerw_32:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    subs x9, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI6_0
+; CHECK-NOSVE-NEXT:    cneg x9, x9, mi
+; CHECK-NOSVE-NEXT:    ldr q1, [x8, :lo12:.LCPI6_0]
+; CHECK-NOSVE-NEXT:    add x10, x9, #3
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    csel x9, x10, x9, lt
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI6_1
+; CHECK-NOSVE-NEXT:    asr x9, x9, #2
+; CHECK-NOSVE-NEXT:    ldr q2, [x10, :lo12:.LCPI6_1]
+; CHECK-NOSVE-NEXT:    dup v0.2d, x9
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    cset w8, eq
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v0.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v0.2d, v2.2d
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v0.4s, v1.4s
+; CHECK-NOSVE-NEXT:    dup v1.4h, w8
+; CHECK-NOSVE-NEXT:    xtn v0.4h, v0.4s
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <4 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 4, i1 0)
+  ret <4 x i1> %0
+}
+
+define <2 x i1> @whilerw_64(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: whilerw_64:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    whilerw p0.s, x0, x1
+; CHECK-SVE-NEXT:    mov z0.s, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    // kill: def $d0 killed $d0 killed $z0
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: whilerw_64:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    subs x9, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI7_0
+; CHECK-NOSVE-NEXT:    cneg x9, x9, mi
+; CHECK-NOSVE-NEXT:    ldr q1, [x8, :lo12:.LCPI7_0]
+; CHECK-NOSVE-NEXT:    add x10, x9, #7
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    csel x9, x10, x9, lt
+; CHECK-NOSVE-NEXT:    asr x9, x9, #3
+; CHECK-NOSVE-NEXT:    dup v0.2d, x9
+; CHECK-NOSVE-NEXT:    cmp x9, #0
+; CHECK-NOSVE-NEXT:    cset w8, eq
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v0.2d, v1.2d
+; CHECK-NOSVE-NEXT:    dup v1.2s, w8
+; CHECK-NOSVE-NEXT:    xtn v0.2s, v0.2d
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v1.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <2 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 8, i1 0)
+  ret <2 x i1> %0
+}
+
+define <16 x i1> @not_whilewr_wrong_eltsize(i64 %a, i64 %b) {
+; CHECK-SVE-LABEL: not_whilewr_wrong_eltsize:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    sub x8, x1, x0
+; CHECK-SVE-NEXT:    add x8, x8, x8, lsr #63
+; CHECK-SVE-NEXT:    asr x8, x8, #1
+; CHECK-SVE-NEXT:    cmp x8, #1
+; CHECK-SVE-NEXT:    cset w9, lt
+; CHECK-SVE-NEXT:    whilelo p0.b, #0, x8
+; CHECK-SVE-NEXT:    dup v0.16b, w9
+; CHECK-SVE-NEXT:    mov z1.b, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    orr v0.16b, v1.16b, v0.16b
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: not_whilewr_wrong_eltsize:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    sub x8, x1, x0
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI8_0
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI8_1
+; CHECK-NOSVE-NEXT:    add x8, x8, x8, lsr #63
+; CHECK-NOSVE-NEXT:    ldr q0, [x9, :lo12:.LCPI8_0]
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI8_2
+; CHECK-NOSVE-NEXT:    ldr q2, [x9, :lo12:.LCPI8_2]
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI8_4
+; CHECK-NOSVE-NEXT:    ldr q1, [x10, :lo12:.LCPI8_1]
+; CHECK-NOSVE-NEXT:    asr x8, x8, #1
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI8_3
+; CHECK-NOSVE-NEXT:    ldr q5, [x9, :lo12:.LCPI8_4]
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI8_6
+; CHECK-NOSVE-NEXT:    ldr q3, [x10, :lo12:.LCPI8_3]
+; CHECK-NOSVE-NEXT:    adrp x10, .LCPI8_5
+; CHECK-NOSVE-NEXT:    dup v4.2d, x8
+; CHECK-NOSVE-NEXT:    ldr q7, [x9, :lo12:.LCPI8_6]
+; CHECK-NOSVE-NEXT:    adrp x9, .LCPI8_7
+; CHECK-NOSVE-NEXT:    ldr q6, [x10, :lo12:.LCPI8_5]
+; CHECK-NOSVE-NEXT:    ldr q16, [x9, :lo12:.LCPI8_7]
+; CHECK-NOSVE-NEXT:    cmp x8, #1
+; CHECK-NOSVE-NEXT:    cset w8, lt
+; CHECK-NOSVE-NEXT:    cmhi v0.2d, v4.2d, v0.2d
+; CHECK-NOSVE-NEXT:    cmhi v1.2d, v4.2d, v1.2d
+; CHECK-NOSVE-NEXT:    cmhi v2.2d, v4.2d, v2.2d
+; CHECK-NOSVE-NEXT:    cmhi v3.2d, v4.2d, v3.2d
+; CHECK-NOSVE-NEXT:    cmhi v5.2d, v4.2d, v5.2d
+; CHECK-NOSVE-NEXT:    cmhi v6.2d, v4.2d, v6.2d
+; CHECK-NOSVE-NEXT:    cmhi v7.2d, v4.2d, v7.2d
+; CHECK-NOSVE-NEXT:    cmhi v4.2d, v4.2d, v16.2d
+; CHECK-NOSVE-NEXT:    uzp1 v0.4s, v1.4s, v0.4s
+; CHECK-NOSVE-NEXT:    uzp1 v1.4s, v3.4s, v2.4s
+; CHECK-NOSVE-NEXT:    uzp1 v2.4s, v6.4s, v5.4s
+; CHECK-NOSVE-NEXT:    uzp1 v3.4s, v4.4s, v7.4s
+; CHECK-NOSVE-NEXT:    uzp1 v0.8h, v1.8h, v0.8h
+; CHECK-NOSVE-NEXT:    uzp1 v1.8h, v3.8h, v2.8h
+; CHECK-NOSVE-NEXT:    uzp1 v0.16b, v1.16b, v0.16b
+; CHECK-NOSVE-NEXT:    dup v1.16b, w8
+; CHECK-NOSVE-NEXT:    orr v0.16b, v0.16b, v1.16b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <16 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 2, i1 1)
+  ret <16 x i1> %0
+}
+
+define <2 x i1> @not_whilerw_ptr32(i32 %a, i32 %b) {
+; CHECK-SVE-LABEL: not_whilerw_ptr32:
+; CHECK-SVE:       // %bb.0: // %entry
+; CHECK-SVE-NEXT:    subs w8, w1, w0
+; CHECK-SVE-NEXT:    cneg w8, w8, mi
+; CHECK-SVE-NEXT:    add w9, w8, #7
+; CHECK-SVE-NEXT:    cmp w8, #0
+; CHECK-SVE-NEXT:    csel w8, w9, w8, lt
+; CHECK-SVE-NEXT:    asr w8, w8, #3
+; CHECK-SVE-NEXT:    cmp w8, #0
+; CHECK-SVE-NEXT:    cset w9, eq
+; CHECK-SVE-NEXT:    whilelo p0.s, #0, w8
+; CHECK-SVE-NEXT:    dup v0.2s, w9
+; CHECK-SVE-NEXT:    mov z1.s, p0/z, #-1 // =0xffffffffffffffff
+; CHECK-SVE-NEXT:    orr v0.8b, v1.8b, v0.8b
+; CHECK-SVE-NEXT:    ret
+;
+; CHECK-NOSVE-LABEL: not_whilerw_ptr32:
+; CHECK-NOSVE:       // %bb.0: // %entry
+; CHECK-NOSVE-NEXT:    subs w9, w1, w0
+; CHECK-NOSVE-NEXT:    adrp x8, .LCPI9_0
+; CHECK-NOSVE-NEXT:    cneg w9, w9, mi
+; CHECK-NOSVE-NEXT:    ldr d1, [x8, :lo12:.LCPI9_0]
+; CHECK-NOSVE-NEXT:    add w10, w9, #7
+; CHECK-NOSVE-NEXT:    cmp w9, #0
+; CHECK-NOSVE-NEXT:    csel w9, w10, w9, lt
+; CHECK-NOSVE-NEXT:    asr w9, w9, #3
+; CHECK-NOSVE-NEXT:    dup v0.2s, w9
+; CHECK-NOSVE-NEXT:    cmp w9, #0
+; CHECK-NOSVE-NEXT:    cset w8, eq
+; CHECK-NOSVE-NEXT:    dup v2.2s, w8
+; CHECK-NOSVE-NEXT:    cmhi v0.2s, v0.2s, v1.2s
+; CHECK-NOSVE-NEXT:    orr v0.8b, v0.8b, v2.8b
+; CHECK-NOSVE-NEXT:    ret
+entry:
+  %0 = call <2 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i32.i32(i32 %a, i32 %b, i32 8, i1 0)
+  ret <2 x i1> %0
+}
diff --git a/llvm/test/CodeGen/AArch64/alias_mask_scalable.ll b/llvm/test/CodeGen/AArch64/alias_mask_scalable.ll
new file mode 100644
index 00000000000000..4912bc0f59d40d
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/alias_mask_scalable.ll
@@ -0,0 +1,82 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=aarch64 -mattr=+sve2 %s | FileCheck %s
+
+define <vscale x 16 x i1> @whilewr_8(i64 %a, i64 %b) {
+; CHECK-LABEL: whilewr_8:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilewr p0.b, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 16 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 1, i1 1)
+  ret <vscale x 16 x i1> %0
+}
+
+define <vscale x 8 x i1> @whilewr_16(i64 %a, i64 %b) {
+; CHECK-LABEL: whilewr_16:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilewr p0.h, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 2, i1 1)
+  ret <vscale x 8 x i1> %0
+}
+
+define <vscale x 4 x i1> @whilewr_32(i64 %a, i64 %b) {
+; CHECK-LABEL: whilewr_32:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilewr p0.s, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 4 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 4, i1 1)
+  ret <vscale x 4 x i1> %0
+}
+
+define <vscale x 2 x i1> @whilewr_64(i64 %a, i64 %b) {
+; CHECK-LABEL: whilewr_64:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilewr p0.d, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 2 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 8, i1 1)
+  ret <vscale x 2 x i1> %0
+}
+
+define <vscale x 16 x i1> @whilerw_8(i64 %a, i64 %b) {
+; CHECK-LABEL: whilerw_8:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilerw p0.b, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 16 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 1, i1 0)
+  ret <vscale x 16 x i1> %0
+}
+
+define <vscale x 8 x i1> @whilerw_16(i64 %a, i64 %b) {
+; CHECK-LABEL: whilerw_16:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilerw p0.h, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 2, i1 0)
+  ret <vscale x 8 x i1> %0
+}
+
+define <vscale x 4 x i1> @whilerw_32(i64 %a, i64 %b) {
+; CHECK-LABEL: whilerw_32:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilerw p0.s, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 4 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 4, i1 0)
+  ret <vscale x 4 x i1> %0
+}
+
+define <vscale x 2 x i1> @whilerw_64(i64 %a, i64 %b) {
+; CHECK-LABEL: whilerw_64:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    whilerw p0.d, x0, x1
+; CHECK-NEXT:    ret
+entry:
+  %0 = call <vscale x 2 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %a, i64 %b, i64 8, i1 0)
+  ret <vscale x 2 x i1> %0
+}
diff --git a/llvm/test/CodeGen/AArch64/whilewr.ll b/llvm/test/CodeGen/AArch64/whilewr.ll
deleted file mode 100644
index 9f1ea850792384..00000000000000
--- a/llvm/test/CodeGen/AArch64/whilewr.ll
+++ /dev/null
@@ -1,1086 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
-; RUN: llc %s -mtriple=aarch64-linux-gnu -mattr=+sve2 -o - | FileCheck %s
-; RUN: llc %s -mtriple=aarch64-linux-gnu -mattr=+sve -o - | FileCheck %s --check-prefix=CHECK-NOSVE2
-
-define <vscale x 16 x i1> @whilewr_8(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_8:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    whilewr p0.b, x1, x2
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_8:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    sub x8, x1, x2
-; CHECK-NOSVE2-NEXT:    cmp x8, #0
-; CHECK-NOSVE2-NEXT:    cset w9, lt
-; CHECK-NOSVE2-NEXT:    whilelo p0.b, xzr, x8
-; CHECK-NOSVE2-NEXT:    sbfx x8, x9, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, xzr, x8
-; CHECK-NOSVE2-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %c14 = ptrtoint ptr %c to i64
-  %b15 = ptrtoint ptr %b to i64
-  %sub.diff = sub i64 %b15, %c14
-  %neg.compare = icmp slt i64 %sub.diff, 0
-  %.splatinsert = insertelement <vscale x 16 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 16 x i1> %.splatinsert, <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %sub.diff)
-  %active.lane.mask.alias = or <vscale x 16 x i1> %ptr.diff.lane.mask, %.splat
-  ret <vscale x 16 x i1> %active.lane.mask.alias
-}
-
-define <vscale x 16 x i1> @whilewr_commutative(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_commutative:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    whilewr p0.b, x1, x2
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_commutative:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    sub x8, x1, x2
-; CHECK-NOSVE2-NEXT:    cmp x8, #0
-; CHECK-NOSVE2-NEXT:    cset w9, lt
-; CHECK-NOSVE2-NEXT:    whilelo p0.b, xzr, x8
-; CHECK-NOSVE2-NEXT:    sbfx x8, x9, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, xzr, x8
-; CHECK-NOSVE2-NEXT:    mov p0.b, p1/m, p1.b
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %c14 = ptrtoint ptr %c to i64
-  %b15 = ptrtoint ptr %b to i64
-  %sub.diff = sub i64 %b15, %c14
-  %neg.compare = icmp slt i64 %sub.diff, 0
-  %.splatinsert = insertelement <vscale x 16 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 16 x i1> %.splatinsert, <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %sub.diff)
-  %active.lane.mask.alias = or <vscale x 16 x i1> %.splat, %ptr.diff.lane.mask
-  ret <vscale x 16 x i1> %active.lane.mask.alias
-}
-
-define <vscale x 8 x i1> @whilewr_16(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_16:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    whilewr p0.h, x1, x2
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_16:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    sub x8, x1, x2
-; CHECK-NOSVE2-NEXT:    cmn x8, #1
-; CHECK-NOSVE2-NEXT:    add x8, x8, x8, lsr #63
-; CHECK-NOSVE2-NEXT:    cset w9, lt
-; CHECK-NOSVE2-NEXT:    sbfx x9, x9, #0, #1
-; CHECK-NOSVE2-NEXT:    asr x8, x8, #1
-; CHECK-NOSVE2-NEXT:    whilelo p0.h, xzr, x9
-; CHECK-NOSVE2-NEXT:    whilelo p1.h, xzr, x8
-; CHECK-NOSVE2-NEXT:    mov p0.b, p1/m, p1.b
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %b14 = ptrtoint ptr %b to i64
-  %c15 = ptrtoint ptr %c to i64
-  %sub.diff = sub i64 %b14, %c15
-  %diff = sdiv i64 %sub.diff, 2
-  %neg.compare = icmp slt i64 %sub.diff, -1
-  %.splatinsert = insertelement <vscale x 8 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 8 x i1> %.splatinsert, <vscale x 8 x i1> poison, <vscale x 8 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 8 x i1> %ptr.diff.lane.mask, %.splat
-  ret <vscale x 8 x i1> %active.lane.mask.alias
-}
-
-define <vscale x 4 x i1> @whilewr_32(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_32:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    whilewr p0.s, x1, x2
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_32:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    sub x8, x1, x2
-; CHECK-NOSVE2-NEXT:    add x9, x8, #3
-; CHECK-NOSVE2-NEXT:    cmp x8, #0
-; CHECK-NOSVE2-NEXT:    csel x9, x9, x8, lt
-; CHECK-NOSVE2-NEXT:    cmn x8, #3
-; CHECK-NOSVE2-NEXT:    cset w8, lt
-; CHECK-NOSVE2-NEXT:    asr x9, x9, #2
-; CHECK-NOSVE2-NEXT:    sbfx x8, x8, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.s, xzr, x9
-; CHECK-NOSVE2-NEXT:    whilelo p0.s, xzr, x8
-; CHECK-NOSVE2-NEXT:    mov p0.b, p1/m, p1.b
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %b12 = ptrtoint ptr %b to i64
-  %c13 = ptrtoint ptr %c to i64
-  %sub.diff = sub i64 %b12, %c13
-  %diff = sdiv i64 %sub.diff, 4
-  %neg.compare = icmp slt i64 %sub.diff, -3
-  %.splatinsert = insertelement <vscale x 4 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 4 x i1> %.splatinsert, <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 4 x i1> %ptr.diff.lane.mask, %.splat
-  ret <vscale x 4 x i1> %active.lane.mask.alias
-}
-
-define <vscale x 2 x i1> @whilewr_64(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_64:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    whilewr p0.d, x1, x2
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_64:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    sub x8, x1, x2
-; CHECK-NOSVE2-NEXT:    add x9, x8, #7
-; CHECK-NOSVE2-NEXT:    cmp x8, #0
-; CHECK-NOSVE2-NEXT:    csel x9, x9, x8, lt
-; CHECK-NOSVE2-NEXT:    cmn x8, #7
-; CHECK-NOSVE2-NEXT:    cset w8, lt
-; CHECK-NOSVE2-NEXT:    asr x9, x9, #3
-; CHECK-NOSVE2-NEXT:    sbfx x8, x8, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.d, xzr, x9
-; CHECK-NOSVE2-NEXT:    whilelo p0.d, xzr, x8
-; CHECK-NOSVE2-NEXT:    mov p0.b, p1/m, p1.b
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %b12 = ptrtoint ptr %b to i64
-  %c13 = ptrtoint ptr %c to i64
-  %sub.diff = sub i64 %b12, %c13
-  %diff = sdiv i64 %sub.diff, 8
-  %neg.compare = icmp slt i64 %sub.diff, -7
-  %.splatinsert = insertelement <vscale x 2 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 2 x i1> %.splatinsert, <vscale x 2 x i1> poison, <vscale x 2 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 2 x i1> %ptr.diff.lane.mask, %.splat
-  ret <vscale x 2 x i1> %active.lane.mask.alias
-}
-
-define <vscale x 1 x i1> @no_whilewr_128(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: no_whilewr_128:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    sub x8, x1, x2
-; CHECK-NEXT:    index z0.d, #0, #1
-; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    add x9, x8, #15
-; CHECK-NEXT:    cmp x8, #0
-; CHECK-NEXT:    csel x9, x9, x8, lt
-; CHECK-NEXT:    cmn x8, #15
-; CHECK-NEXT:    asr x9, x9, #4
-; CHECK-NEXT:    cset w8, lt
-; CHECK-NEXT:    sbfx x8, x8, #0, #1
-; CHECK-NEXT:    mov z1.d, x9
-; CHECK-NEXT:    whilelo p1.d, xzr, x8
-; CHECK-NEXT:    cmphi p0.d, p0/z, z1.d, z0.d
-; CHECK-NEXT:    punpklo p1.h, p1.b
-; CHECK-NEXT:    punpklo p0.h, p0.b
-; CHECK-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: no_whilewr_128:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    sub x8, x1, x2
-; CHECK-NOSVE2-NEXT:    index z0.d, #0, #1
-; CHECK-NOSVE2-NEXT:    ptrue p0.d
-; CHECK-NOSVE2-NEXT:    add x9, x8, #15
-; CHECK-NOSVE2-NEXT:    cmp x8, #0
-; CHECK-NOSVE2-NEXT:    csel x9, x9, x8, lt
-; CHECK-NOSVE2-NEXT:    cmn x8, #15
-; CHECK-NOSVE2-NEXT:    asr x9, x9, #4
-; CHECK-NOSVE2-NEXT:    cset w8, lt
-; CHECK-NOSVE2-NEXT:    sbfx x8, x8, #0, #1
-; CHECK-NOSVE2-NEXT:    mov z1.d, x9
-; CHECK-NOSVE2-NEXT:    whilelo p1.d, xzr, x8
-; CHECK-NOSVE2-NEXT:    cmphi p0.d, p0/z, z1.d, z0.d
-; CHECK-NOSVE2-NEXT:    punpklo p1.h, p1.b
-; CHECK-NOSVE2-NEXT:    punpklo p0.h, p0.b
-; CHECK-NOSVE2-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %b12 = ptrtoint ptr %b to i64
-  %c13 = ptrtoint ptr %c to i64
-  %sub.diff = sub i64 %b12, %c13
-  %diff = sdiv i64 %sub.diff, 16
-  %neg.compare = icmp slt i64 %sub.diff, -15
-  %.splatinsert = insertelement <vscale x 1 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 1 x i1> %.splatinsert, <vscale x 1 x i1> poison, <vscale x 1 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 1 x i1> @llvm.get.active.lane.mask.nxv1i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 1 x i1> %ptr.diff.lane.mask, %.splat
-  ret <vscale x 1 x i1> %active.lane.mask.alias
-}
-
-define void @whilewr_loop_8(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_8:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB6_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    whilewr p0.b, x1, x2
-; CHECK-NEXT:    mov w9, w3
-; CHECK-NEXT:    mov x8, xzr
-; CHECK-NEXT:    whilelo p1.b, xzr, x9
-; CHECK-NEXT:    cntp x10, p0, p0.b
-; CHECK-NEXT:    and x10, x10, #0xff
-; CHECK-NEXT:  .LBB6_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:    ld1b { z0.b }, p1/z, [x0, x8]
-; CHECK-NEXT:    ld1b { z1.b }, p1/z, [x1, x8]
-; CHECK-NEXT:    add z0.b, z1.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p1, [x2, x8]
-; CHECK-NEXT:    add x8, x8, x10
-; CHECK-NEXT:    whilelo p1.b, x8, x9
-; CHECK-NEXT:    b.mi .LBB6_2
-; CHECK-NEXT:  .LBB6_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_8:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB6_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    sub x9, x1, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    whilelo p0.b, xzr, x9
-; CHECK-NOSVE2-NEXT:    sbfx x9, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, xzr, x9
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, xzr, x9
-; CHECK-NOSVE2-NEXT:    cntp x10, p0, p0.b
-; CHECK-NOSVE2-NEXT:    and x10, x10, #0xff
-; CHECK-NOSVE2-NEXT:  .LBB6_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:    ld1b { z0.b }, p1/z, [x0, x8]
-; CHECK-NOSVE2-NEXT:    ld1b { z1.b }, p1/z, [x1, x8]
-; CHECK-NOSVE2-NEXT:    add z0.b, z1.b, z0.b
-; CHECK-NOSVE2-NEXT:    st1b { z0.b }, p1, [x2, x8]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB6_2
-; CHECK-NOSVE2-NEXT:  .LBB6_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp11 = icmp sgt i32 %n, 0
-  br i1 %cmp11, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %c14 = ptrtoint ptr %c to i64
-  %b15 = ptrtoint ptr %b to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %sub.diff = sub i64 %b15, %c14
-  %neg.compare = icmp slt i64 %sub.diff, 0
-  %.splatinsert = insertelement <vscale x 16 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 16 x i1> %.splatinsert, <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %sub.diff)
-  %active.lane.mask.alias = or <vscale x 16 x i1> %ptr.diff.lane.mask, %.splat
-  %active.lane.mask.entry = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %wide.trip.count)
-  %0 = zext <vscale x 16 x i1> %active.lane.mask.alias to <vscale x 16 x i8>
-  %1 = tail call i8 @llvm.vector.reduce.add.nxv16i8(<vscale x 16 x i8> %0)
-  %2 = zext i8 %1 to i64
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 16 x i1> [ %active.lane.mask.entry, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %3 = and <vscale x 16 x i1> %active.lane.mask, %active.lane.mask.alias
-  %4 = getelementptr inbounds i8, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0(ptr %4, i32 1, <vscale x 16 x i1> %3, <vscale x 16 x i8> poison)
-  %5 = getelementptr inbounds i8, ptr %b, i64 %index
-  %wide.masked.load16 = tail call <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0(ptr %5, i32 1, <vscale x 16 x i1> %3, <vscale x 16 x i8> poison)
-  %6 = add <vscale x 16 x i8> %wide.masked.load16, %wide.masked.load
-  %7 = getelementptr inbounds i8, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv16i8.p0(<vscale x 16 x i8> %6, ptr %7, i32 1, <vscale x 16 x i1> %3)
-  %index.next = add i64 %index, %2
-  %active.lane.mask.next = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %8 = extractelement <vscale x 16 x i1> %active.lane.mask.next, i64 0
-  br i1 %8, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_16(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_16:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB7_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    mov w8, w3
-; CHECK-NEXT:    whilewr p1.h, x1, x2
-; CHECK-NEXT:    mov x9, xzr
-; CHECK-NEXT:    whilelo p0.h, xzr, x8
-; CHECK-NEXT:    and p0.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:  .LBB7_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    ld1h { z0.h }, p0/z, [x0, x9, lsl #1]
-; CHECK-NEXT:    ld1h { z1.h }, p0/z, [x1, x9, lsl #1]
-; CHECK-NEXT:    add z0.h, z1.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p0, [x2, x9, lsl #1]
-; CHECK-NEXT:    inch x9
-; CHECK-NEXT:    whilelo p0.h, x9, x8
-; CHECK-NEXT:    b.mi .LBB7_2
-; CHECK-NEXT:  .LBB7_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_16:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB7_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sub x10, x1, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    whilelo p0.h, xzr, x9
-; CHECK-NOSVE2-NEXT:    cmn x10, #1
-; CHECK-NOSVE2-NEXT:    add x10, x10, x10, lsr #63
-; CHECK-NOSVE2-NEXT:    cset w11, lt
-; CHECK-NOSVE2-NEXT:    sbfx x11, x11, #0, #1
-; CHECK-NOSVE2-NEXT:    asr x10, x10, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.h, xzr, x11
-; CHECK-NOSVE2-NEXT:    whilelo p2.h, xzr, x10
-; CHECK-NOSVE2-NEXT:    cnth x10
-; CHECK-NOSVE2-NEXT:    mov p1.b, p2/m, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:  .LBB7_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    ld1h { z0.h }, p0/z, [x0, x8, lsl #1]
-; CHECK-NOSVE2-NEXT:    ld1h { z1.h }, p0/z, [x1, x8, lsl #1]
-; CHECK-NOSVE2-NEXT:    add z0.h, z1.h, z0.h
-; CHECK-NOSVE2-NEXT:    st1h { z0.h }, p0, [x2, x8, lsl #1]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p0.h, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB7_2
-; CHECK-NOSVE2-NEXT:  .LBB7_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp11 = icmp sgt i32 %n, 0
-  br i1 %cmp11, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %b14 = ptrtoint ptr %b to i64
-  %c15 = ptrtoint ptr %c to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %0 = tail call i64 @llvm.vscale.i64()
-  %1 = shl nuw nsw i64 %0, 3
-  %active.lane.mask.entry = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 %wide.trip.count)
-  %sub.diff = sub i64 %b14, %c15
-  %diff = sdiv i64 %sub.diff, 2
-  %neg.compare = icmp slt i64 %sub.diff, -1
-  %.splatinsert = insertelement <vscale x 8 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 8 x i1> %.splatinsert, <vscale x 8 x i1> poison, <vscale x 8 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 8 x i1> %ptr.diff.lane.mask, %.splat
-  %2 = and <vscale x 8 x i1> %active.lane.mask.alias, %active.lane.mask.entry
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 8 x i1> [ %2, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %3 = getelementptr inbounds i16, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 8 x i16> @llvm.masked.load.nxv8i16.p0(ptr %3, i32 2, <vscale x 8 x i1> %active.lane.mask, <vscale x 8 x i16> poison)
-  %4 = getelementptr inbounds i16, ptr %b, i64 %index
-  %wide.masked.load16 = tail call <vscale x 8 x i16> @llvm.masked.load.nxv8i16.p0(ptr %4, i32 2, <vscale x 8 x i1> %active.lane.mask, <vscale x 8 x i16> poison)
-  %5 = add <vscale x 8 x i16> %wide.masked.load16, %wide.masked.load
-  %6 = getelementptr inbounds i16, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv8i16.p0(<vscale x 8 x i16> %5, ptr %6, i32 2, <vscale x 8 x i1> %active.lane.mask)
-  %index.next = add i64 %index, %1
-  %active.lane.mask.next = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %7 = extractelement <vscale x 8 x i1> %active.lane.mask.next, i64 0
-  br i1 %7, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_32(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_32:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB8_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    mov w8, w3
-; CHECK-NEXT:    whilewr p1.s, x1, x2
-; CHECK-NEXT:    mov x9, xzr
-; CHECK-NEXT:    whilelo p0.s, xzr, x8
-; CHECK-NEXT:    and p0.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:  .LBB8_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    ld1w { z0.s }, p0/z, [x0, x9, lsl #2]
-; CHECK-NEXT:    ld1w { z1.s }, p0/z, [x1, x9, lsl #2]
-; CHECK-NEXT:    add z0.s, z1.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p0, [x2, x9, lsl #2]
-; CHECK-NEXT:    incw x9
-; CHECK-NEXT:    whilelo p0.s, x9, x8
-; CHECK-NEXT:    b.mi .LBB8_2
-; CHECK-NEXT:  .LBB8_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_32:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB8_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sub x10, x1, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    whilelo p0.s, xzr, x9
-; CHECK-NOSVE2-NEXT:    add x11, x10, #3
-; CHECK-NOSVE2-NEXT:    cmp x10, #0
-; CHECK-NOSVE2-NEXT:    csel x11, x11, x10, lt
-; CHECK-NOSVE2-NEXT:    cmn x10, #3
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    asr x11, x11, #2
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p2.s, xzr, x11
-; CHECK-NOSVE2-NEXT:    whilelo p1.s, xzr, x10
-; CHECK-NOSVE2-NEXT:    cntw x10
-; CHECK-NOSVE2-NEXT:    mov p1.b, p2/m, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:  .LBB8_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    ld1w { z0.s }, p0/z, [x0, x8, lsl #2]
-; CHECK-NOSVE2-NEXT:    ld1w { z1.s }, p0/z, [x1, x8, lsl #2]
-; CHECK-NOSVE2-NEXT:    add z0.s, z1.s, z0.s
-; CHECK-NOSVE2-NEXT:    st1w { z0.s }, p0, [x2, x8, lsl #2]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p0.s, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB8_2
-; CHECK-NOSVE2-NEXT:  .LBB8_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp9 = icmp sgt i32 %n, 0
-  br i1 %cmp9, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %b12 = ptrtoint ptr %b to i64
-  %c13 = ptrtoint ptr %c to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %0 = tail call i64 @llvm.vscale.i64()
-  %1 = shl nuw nsw i64 %0, 2
-  %active.lane.mask.entry = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 %wide.trip.count)
-  %sub.diff = sub i64 %b12, %c13
-  %diff = sdiv i64 %sub.diff, 4
-  %neg.compare = icmp slt i64 %sub.diff, -3
-  %.splatinsert = insertelement <vscale x 4 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 4 x i1> %.splatinsert, <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 4 x i1> %ptr.diff.lane.mask, %.splat
-  %2 = and <vscale x 4 x i1> %active.lane.mask.alias, %active.lane.mask.entry
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 4 x i1> [ %2, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %3 = getelementptr inbounds i32, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr %3, i32 4, <vscale x 4 x i1> %active.lane.mask, <vscale x 4 x i32> poison)
-  %4 = getelementptr inbounds i32, ptr %b, i64 %index
-  %wide.masked.load14 = tail call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr %4, i32 4, <vscale x 4 x i1> %active.lane.mask, <vscale x 4 x i32> poison)
-  %5 = add <vscale x 4 x i32> %wide.masked.load14, %wide.masked.load
-  %6 = getelementptr inbounds i32, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv4i32.p0(<vscale x 4 x i32> %5, ptr %6, i32 4, <vscale x 4 x i1> %active.lane.mask)
-  %index.next = add i64 %index, %1
-  %active.lane.mask.next = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %7 = extractelement <vscale x 4 x i1> %active.lane.mask.next, i64 0
-  br i1 %7, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_64(ptr noalias %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_64:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB9_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    mov w8, w3
-; CHECK-NEXT:    whilewr p1.d, x1, x2
-; CHECK-NEXT:    mov x9, xzr
-; CHECK-NEXT:    whilelo p0.d, xzr, x8
-; CHECK-NEXT:    and p0.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:  .LBB9_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    ld1d { z0.d }, p0/z, [x0, x9, lsl #3]
-; CHECK-NEXT:    ld1d { z1.d }, p0/z, [x1, x9, lsl #3]
-; CHECK-NEXT:    add z0.d, z1.d, z0.d
-; CHECK-NEXT:    st1d { z0.d }, p0, [x2, x9, lsl #3]
-; CHECK-NEXT:    incd x9
-; CHECK-NEXT:    whilelo p0.d, x9, x8
-; CHECK-NEXT:    b.mi .LBB9_2
-; CHECK-NEXT:  .LBB9_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_64:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB9_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sub x10, x1, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    whilelo p0.d, xzr, x9
-; CHECK-NOSVE2-NEXT:    add x11, x10, #7
-; CHECK-NOSVE2-NEXT:    cmp x10, #0
-; CHECK-NOSVE2-NEXT:    csel x11, x11, x10, lt
-; CHECK-NOSVE2-NEXT:    cmn x10, #7
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    asr x11, x11, #3
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p2.d, xzr, x11
-; CHECK-NOSVE2-NEXT:    whilelo p1.d, xzr, x10
-; CHECK-NOSVE2-NEXT:    cntd x10
-; CHECK-NOSVE2-NEXT:    mov p1.b, p2/m, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:  .LBB9_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    ld1d { z0.d }, p0/z, [x0, x8, lsl #3]
-; CHECK-NOSVE2-NEXT:    ld1d { z1.d }, p0/z, [x1, x8, lsl #3]
-; CHECK-NOSVE2-NEXT:    add z0.d, z1.d, z0.d
-; CHECK-NOSVE2-NEXT:    st1d { z0.d }, p0, [x2, x8, lsl #3]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p0.d, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB9_2
-; CHECK-NOSVE2-NEXT:  .LBB9_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp9 = icmp sgt i32 %n, 0
-  br i1 %cmp9, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %b12 = ptrtoint ptr %b to i64
-  %c13 = ptrtoint ptr %c to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %0 = tail call i64 @llvm.vscale.i64()
-  %1 = shl nuw nsw i64 %0, 1
-  %active.lane.mask.entry = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 0, i64 %wide.trip.count)
-  %sub.diff = sub i64 %b12, %c13
-  %diff = sdiv i64 %sub.diff, 8
-  %neg.compare = icmp slt i64 %sub.diff, -7
-  %.splatinsert = insertelement <vscale x 2 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 2 x i1> %.splatinsert, <vscale x 2 x i1> poison, <vscale x 2 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 2 x i1> %ptr.diff.lane.mask, %.splat
-  %2 = and <vscale x 2 x i1> %active.lane.mask.alias, %active.lane.mask.entry
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 2 x i1> [ %2, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %3 = getelementptr inbounds i64, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 2 x i64> @llvm.masked.load.nxv2i64.p0(ptr %3, i32 8, <vscale x 2 x i1> %active.lane.mask, <vscale x 2 x i64> poison)
-  %4 = getelementptr inbounds i64, ptr %b, i64 %index
-  %wide.masked.load14 = tail call <vscale x 2 x i64> @llvm.masked.load.nxv2i64.p0(ptr %4, i32 8, <vscale x 2 x i1> %active.lane.mask, <vscale x 2 x i64> poison)
-  %5 = add <vscale x 2 x i64> %wide.masked.load14, %wide.masked.load
-  %6 = getelementptr inbounds i64, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv2i64.p0(<vscale x 2 x i64> %5, ptr %6, i32 8, <vscale x 2 x i1> %active.lane.mask)
-  %index.next = add i64 %index, %1
-  %active.lane.mask.next = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %7 = extractelement <vscale x 2 x i1> %active.lane.mask.next, i64 0
-  br i1 %7, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_multiple_8(ptr %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_multiple_8:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB10_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    whilewr p0.b, x0, x2
-; CHECK-NEXT:    mov w9, w3
-; CHECK-NEXT:    mov x8, xzr
-; CHECK-NEXT:    whilewr p1.b, x1, x2
-; CHECK-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NEXT:    whilelo p1.b, xzr, x9
-; CHECK-NEXT:    cntp x10, p0, p0.b
-; CHECK-NEXT:    and x10, x10, #0xff
-; CHECK-NEXT:  .LBB10_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:    ld1b { z0.b }, p1/z, [x0, x8]
-; CHECK-NEXT:    ld1b { z1.b }, p1/z, [x1, x8]
-; CHECK-NEXT:    add z0.b, z1.b, z0.b
-; CHECK-NEXT:    st1b { z0.b }, p1, [x2, x8]
-; CHECK-NEXT:    add x8, x8, x10
-; CHECK-NEXT:    whilelo p1.b, x8, x9
-; CHECK-NEXT:    b.mi .LBB10_2
-; CHECK-NEXT:  .LBB10_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_multiple_8:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB10_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    sub x9, x0, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    whilelo p0.b, xzr, x9
-; CHECK-NOSVE2-NEXT:    sub x9, x1, x2
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, xzr, x10
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    whilelo p3.b, xzr, x9
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    whilelo p2.b, xzr, x10
-; CHECK-NOSVE2-NEXT:    sel p1.b, p3, p3.b, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, xzr, x9
-; CHECK-NOSVE2-NEXT:    cntp x10, p0, p0.b
-; CHECK-NOSVE2-NEXT:    and x10, x10, #0xff
-; CHECK-NOSVE2-NEXT:  .LBB10_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:    ld1b { z0.b }, p1/z, [x0, x8]
-; CHECK-NOSVE2-NEXT:    ld1b { z1.b }, p1/z, [x1, x8]
-; CHECK-NOSVE2-NEXT:    add z0.b, z1.b, z0.b
-; CHECK-NOSVE2-NEXT:    st1b { z0.b }, p1, [x2, x8]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p1.b, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB10_2
-; CHECK-NOSVE2-NEXT:  .LBB10_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp11 = icmp sgt i32 %n, 0
-  br i1 %cmp11, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %c14 = ptrtoint ptr %c to i64
-  %a15 = ptrtoint ptr %a to i64
-  %b16 = ptrtoint ptr %b to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %sub.diff = sub i64 %a15, %c14
-  %neg.compare = icmp slt i64 %sub.diff, 0
-  %.splatinsert = insertelement <vscale x 16 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 16 x i1> %.splatinsert, <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %sub.diff)
-  %active.lane.mask.alias = or <vscale x 16 x i1> %ptr.diff.lane.mask, %.splat
-  %sub.diff18 = sub i64 %b16, %c14
-  %neg.compare20 = icmp slt i64 %sub.diff18, 0
-  %.splatinsert21 = insertelement <vscale x 16 x i1> poison, i1 %neg.compare20, i64 0
-  %.splat22 = shufflevector <vscale x 16 x i1> %.splatinsert21, <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer
-  %ptr.diff.lane.mask23 = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %sub.diff18)
-  %active.lane.mask.alias24 = or <vscale x 16 x i1> %ptr.diff.lane.mask23, %.splat22
-  %0 = and <vscale x 16 x i1> %active.lane.mask.alias, %active.lane.mask.alias24
-  %active.lane.mask.entry = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 0, i64 %wide.trip.count)
-  %1 = zext <vscale x 16 x i1> %0 to <vscale x 16 x i8>
-  %2 = tail call i8 @llvm.vector.reduce.add.nxv16i8(<vscale x 16 x i8> %1)
-  %3 = zext i8 %2 to i64
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 16 x i1> [ %active.lane.mask.entry, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %4 = and <vscale x 16 x i1> %active.lane.mask, %0
-  %5 = getelementptr inbounds i8, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0(ptr %5, i32 1, <vscale x 16 x i1> %4, <vscale x 16 x i8> poison)
-  %6 = getelementptr inbounds i8, ptr %b, i64 %index
-  %wide.masked.load25 = tail call <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0(ptr %6, i32 1, <vscale x 16 x i1> %4, <vscale x 16 x i8> poison)
-  %7 = add <vscale x 16 x i8> %wide.masked.load25, %wide.masked.load
-  %8 = getelementptr inbounds i8, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv16i8.p0(<vscale x 16 x i8> %7, ptr %8, i32 1, <vscale x 16 x i1> %4)
-  %index.next = add i64 %index, %3
-  %active.lane.mask.next = tail call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %9 = extractelement <vscale x 16 x i1> %active.lane.mask.next, i64 0
-  br i1 %9, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_multiple_16(ptr %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_multiple_16:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB11_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    whilewr p0.h, x0, x2
-; CHECK-NEXT:    mov w9, w3
-; CHECK-NEXT:    mov x8, xzr
-; CHECK-NEXT:    whilewr p1.h, x1, x2
-; CHECK-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NEXT:    whilelo p1.h, xzr, x9
-; CHECK-NEXT:    cntp x10, p0, p0.h
-; CHECK-NEXT:    and x10, x10, #0xff
-; CHECK-NEXT:  .LBB11_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:    ld1h { z0.h }, p1/z, [x0, x8, lsl #1]
-; CHECK-NEXT:    ld1h { z1.h }, p1/z, [x1, x8, lsl #1]
-; CHECK-NEXT:    add z0.h, z1.h, z0.h
-; CHECK-NEXT:    st1h { z0.h }, p1, [x2, x8, lsl #1]
-; CHECK-NEXT:    add x8, x8, x10
-; CHECK-NEXT:    whilelo p1.h, x8, x9
-; CHECK-NEXT:    b.mi .LBB11_2
-; CHECK-NEXT:  .LBB11_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_multiple_16:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB11_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    sub x9, x0, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    cmn x9, #1
-; CHECK-NOSVE2-NEXT:    add x9, x9, x9, lsr #63
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    asr x9, x9, #1
-; CHECK-NOSVE2-NEXT:    whilelo p0.h, xzr, x10
-; CHECK-NOSVE2-NEXT:    sub x10, x1, x2
-; CHECK-NOSVE2-NEXT:    whilelo p1.h, xzr, x9
-; CHECK-NOSVE2-NEXT:    add x9, x10, x10, lsr #63
-; CHECK-NOSVE2-NEXT:    cmn x10, #1
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    asr x9, x9, #1
-; CHECK-NOSVE2-NEXT:    mov p0.b, p1/m, p1.b
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p3.h, xzr, x9
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    whilelo p2.h, xzr, x10
-; CHECK-NOSVE2-NEXT:    sel p1.b, p3, p3.b, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    whilelo p1.h, xzr, x9
-; CHECK-NOSVE2-NEXT:    cntp x10, p0, p0.h
-; CHECK-NOSVE2-NEXT:    and x10, x10, #0xff
-; CHECK-NOSVE2-NEXT:  .LBB11_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:    ld1h { z0.h }, p1/z, [x0, x8, lsl #1]
-; CHECK-NOSVE2-NEXT:    ld1h { z1.h }, p1/z, [x1, x8, lsl #1]
-; CHECK-NOSVE2-NEXT:    add z0.h, z1.h, z0.h
-; CHECK-NOSVE2-NEXT:    st1h { z0.h }, p1, [x2, x8, lsl #1]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p1.h, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB11_2
-; CHECK-NOSVE2-NEXT:  .LBB11_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp11 = icmp sgt i32 %n, 0
-  br i1 %cmp11, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %c14 = ptrtoint ptr %c to i64
-  %a15 = ptrtoint ptr %a to i64
-  %b16 = ptrtoint ptr %b to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %sub.diff = sub i64 %a15, %c14
-  %diff = sdiv i64 %sub.diff, 2
-  %neg.compare = icmp slt i64 %sub.diff, -1
-  %.splatinsert = insertelement <vscale x 8 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 8 x i1> %.splatinsert, <vscale x 8 x i1> poison, <vscale x 8 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 8 x i1> %ptr.diff.lane.mask, %.splat
-  %sub.diff18 = sub i64 %b16, %c14
-  %diff19 = sdiv i64 %sub.diff18, 2
-  %neg.compare20 = icmp slt i64 %sub.diff18, -1
-  %.splatinsert21 = insertelement <vscale x 8 x i1> poison, i1 %neg.compare20, i64 0
-  %.splat22 = shufflevector <vscale x 8 x i1> %.splatinsert21, <vscale x 8 x i1> poison, <vscale x 8 x i32> zeroinitializer
-  %ptr.diff.lane.mask23 = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 %diff19)
-  %active.lane.mask.alias24 = or <vscale x 8 x i1> %ptr.diff.lane.mask23, %.splat22
-  %0 = and <vscale x 8 x i1> %active.lane.mask.alias, %active.lane.mask.alias24
-  %active.lane.mask.entry = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 0, i64 %wide.trip.count)
-  %1 = zext <vscale x 8 x i1> %0 to <vscale x 8 x i8>
-  %2 = tail call i8 @llvm.vector.reduce.add.nxv8i8(<vscale x 8 x i8> %1)
-  %3 = zext i8 %2 to i64
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 8 x i1> [ %active.lane.mask.entry, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %4 = and <vscale x 8 x i1> %active.lane.mask, %0
-  %5 = getelementptr inbounds i16, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 8 x i16> @llvm.masked.load.nxv8i16.p0(ptr %5, i32 2, <vscale x 8 x i1> %4, <vscale x 8 x i16> poison)
-  %6 = getelementptr inbounds i16, ptr %b, i64 %index
-  %wide.masked.load25 = tail call <vscale x 8 x i16> @llvm.masked.load.nxv8i16.p0(ptr %6, i32 2, <vscale x 8 x i1> %4, <vscale x 8 x i16> poison)
-  %7 = add <vscale x 8 x i16> %wide.masked.load25, %wide.masked.load
-  %8 = getelementptr inbounds i16, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv8i16.p0(<vscale x 8 x i16> %7, ptr %8, i32 2, <vscale x 8 x i1> %4)
-  %index.next = add i64 %index, %3
-  %active.lane.mask.next = tail call <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %9 = extractelement <vscale x 8 x i1> %active.lane.mask.next, i64 0
-  br i1 %9, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_multiple_32(ptr %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_multiple_32:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB12_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    whilewr p0.s, x0, x2
-; CHECK-NEXT:    mov w9, w3
-; CHECK-NEXT:    mov x8, xzr
-; CHECK-NEXT:    whilewr p1.s, x1, x2
-; CHECK-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NEXT:    whilelo p1.s, xzr, x9
-; CHECK-NEXT:    cntp x10, p0, p0.s
-; CHECK-NEXT:    and x10, x10, #0xff
-; CHECK-NEXT:  .LBB12_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:    ld1w { z0.s }, p1/z, [x0, x8, lsl #2]
-; CHECK-NEXT:    ld1w { z1.s }, p1/z, [x1, x8, lsl #2]
-; CHECK-NEXT:    add z0.s, z1.s, z0.s
-; CHECK-NEXT:    st1w { z0.s }, p1, [x2, x8, lsl #2]
-; CHECK-NEXT:    add x8, x8, x10
-; CHECK-NEXT:    whilelo p1.s, x8, x9
-; CHECK-NEXT:    b.mi .LBB12_2
-; CHECK-NEXT:  .LBB12_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_multiple_32:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB12_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    sub x9, x0, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    add x10, x9, #3
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    csel x10, x10, x9, lt
-; CHECK-NOSVE2-NEXT:    cmn x9, #3
-; CHECK-NOSVE2-NEXT:    asr x9, x10, #2
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p0.s, xzr, x9
-; CHECK-NOSVE2-NEXT:    sub x9, x1, x2
-; CHECK-NOSVE2-NEXT:    whilelo p1.s, xzr, x10
-; CHECK-NOSVE2-NEXT:    add x10, x9, #3
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    csel x10, x10, x9, lt
-; CHECK-NOSVE2-NEXT:    cmn x9, #3
-; CHECK-NOSVE2-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    cset w9, lt
-; CHECK-NOSVE2-NEXT:    asr x10, x10, #2
-; CHECK-NOSVE2-NEXT:    sbfx x9, x9, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p3.s, xzr, x10
-; CHECK-NOSVE2-NEXT:    whilelo p2.s, xzr, x9
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sel p1.b, p3, p3.b, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    whilelo p1.s, xzr, x9
-; CHECK-NOSVE2-NEXT:    cntp x10, p0, p0.s
-; CHECK-NOSVE2-NEXT:    and x10, x10, #0xff
-; CHECK-NOSVE2-NEXT:  .LBB12_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:    ld1w { z0.s }, p1/z, [x0, x8, lsl #2]
-; CHECK-NOSVE2-NEXT:    ld1w { z1.s }, p1/z, [x1, x8, lsl #2]
-; CHECK-NOSVE2-NEXT:    add z0.s, z1.s, z0.s
-; CHECK-NOSVE2-NEXT:    st1w { z0.s }, p1, [x2, x8, lsl #2]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p1.s, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB12_2
-; CHECK-NOSVE2-NEXT:  .LBB12_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp9 = icmp sgt i32 %n, 0
-  br i1 %cmp9, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %c12 = ptrtoint ptr %c to i64
-  %a13 = ptrtoint ptr %a to i64
-  %b14 = ptrtoint ptr %b to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %sub.diff = sub i64 %a13, %c12
-  %diff = sdiv i64 %sub.diff, 4
-  %neg.compare = icmp slt i64 %sub.diff, -3
-  %.splatinsert = insertelement <vscale x 4 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 4 x i1> %.splatinsert, <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 4 x i1> %ptr.diff.lane.mask, %.splat
-  %sub.diff16 = sub i64 %b14, %c12
-  %diff17 = sdiv i64 %sub.diff16, 4
-  %neg.compare18 = icmp slt i64 %sub.diff16, -3
-  %.splatinsert19 = insertelement <vscale x 4 x i1> poison, i1 %neg.compare18, i64 0
-  %.splat20 = shufflevector <vscale x 4 x i1> %.splatinsert19, <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer
-  %ptr.diff.lane.mask21 = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 %diff17)
-  %active.lane.mask.alias22 = or <vscale x 4 x i1> %ptr.diff.lane.mask21, %.splat20
-  %0 = and <vscale x 4 x i1> %active.lane.mask.alias, %active.lane.mask.alias22
-  %active.lane.mask.entry = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 %wide.trip.count)
-  %1 = zext <vscale x 4 x i1> %0 to <vscale x 4 x i8>
-  %2 = tail call i8 @llvm.vector.reduce.add.nxv4i8(<vscale x 4 x i8> %1)
-  %3 = zext i8 %2 to i64
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 4 x i1> [ %active.lane.mask.entry, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %4 = and <vscale x 4 x i1> %active.lane.mask, %0
-  %5 = getelementptr inbounds i32, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr %5, i32 4, <vscale x 4 x i1> %4, <vscale x 4 x i32> poison)
-  %6 = getelementptr inbounds i32, ptr %b, i64 %index
-  %wide.masked.load23 = tail call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr %6, i32 4, <vscale x 4 x i1> %4, <vscale x 4 x i32> poison)
-  %7 = add <vscale x 4 x i32> %wide.masked.load23, %wide.masked.load
-  %8 = getelementptr inbounds i32, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv4i32.p0(<vscale x 4 x i32> %7, ptr %8, i32 4, <vscale x 4 x i1> %4)
-  %index.next = add i64 %index, %3
-  %active.lane.mask.next = tail call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %9 = extractelement <vscale x 4 x i1> %active.lane.mask.next, i64 0
-  br i1 %9, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-define void @whilewr_loop_multiple_64(ptr %a, ptr %b, ptr %c, i32 %n) {
-; CHECK-LABEL: whilewr_loop_multiple_64:
-; CHECK:       // %bb.0: // %entry
-; CHECK-NEXT:    cmp w3, #1
-; CHECK-NEXT:    b.lt .LBB13_3
-; CHECK-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NEXT:    whilewr p0.d, x0, x2
-; CHECK-NEXT:    mov w9, w3
-; CHECK-NEXT:    mov x8, xzr
-; CHECK-NEXT:    whilewr p1.d, x1, x2
-; CHECK-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NEXT:    whilelo p1.d, xzr, x9
-; CHECK-NEXT:    cntp x10, p0, p0.d
-; CHECK-NEXT:    and x10, x10, #0xff
-; CHECK-NEXT:  .LBB13_2: // %vector.body
-; CHECK-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NEXT:    ld1d { z0.d }, p1/z, [x0, x8, lsl #3]
-; CHECK-NEXT:    ld1d { z1.d }, p1/z, [x1, x8, lsl #3]
-; CHECK-NEXT:    add z0.d, z1.d, z0.d
-; CHECK-NEXT:    st1d { z0.d }, p1, [x2, x8, lsl #3]
-; CHECK-NEXT:    add x8, x8, x10
-; CHECK-NEXT:    whilelo p1.d, x8, x9
-; CHECK-NEXT:    b.mi .LBB13_2
-; CHECK-NEXT:  .LBB13_3: // %for.cond.cleanup
-; CHECK-NEXT:    ret
-;
-; CHECK-NOSVE2-LABEL: whilewr_loop_multiple_64:
-; CHECK-NOSVE2:       // %bb.0: // %entry
-; CHECK-NOSVE2-NEXT:    cmp w3, #1
-; CHECK-NOSVE2-NEXT:    b.lt .LBB13_3
-; CHECK-NOSVE2-NEXT:  // %bb.1: // %for.body.preheader
-; CHECK-NOSVE2-NEXT:    sub x9, x0, x2
-; CHECK-NOSVE2-NEXT:    mov x8, xzr
-; CHECK-NOSVE2-NEXT:    add x10, x9, #7
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    csel x10, x10, x9, lt
-; CHECK-NOSVE2-NEXT:    cmn x9, #7
-; CHECK-NOSVE2-NEXT:    asr x9, x10, #3
-; CHECK-NOSVE2-NEXT:    cset w10, lt
-; CHECK-NOSVE2-NEXT:    sbfx x10, x10, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p0.d, xzr, x9
-; CHECK-NOSVE2-NEXT:    sub x9, x1, x2
-; CHECK-NOSVE2-NEXT:    whilelo p1.d, xzr, x10
-; CHECK-NOSVE2-NEXT:    add x10, x9, #7
-; CHECK-NOSVE2-NEXT:    cmp x9, #0
-; CHECK-NOSVE2-NEXT:    csel x10, x10, x9, lt
-; CHECK-NOSVE2-NEXT:    cmn x9, #7
-; CHECK-NOSVE2-NEXT:    sel p0.b, p0, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    cset w9, lt
-; CHECK-NOSVE2-NEXT:    asr x10, x10, #3
-; CHECK-NOSVE2-NEXT:    sbfx x9, x9, #0, #1
-; CHECK-NOSVE2-NEXT:    whilelo p3.d, xzr, x10
-; CHECK-NOSVE2-NEXT:    whilelo p2.d, xzr, x9
-; CHECK-NOSVE2-NEXT:    mov w9, w3
-; CHECK-NOSVE2-NEXT:    sel p1.b, p3, p3.b, p2.b
-; CHECK-NOSVE2-NEXT:    and p0.b, p0/z, p0.b, p1.b
-; CHECK-NOSVE2-NEXT:    whilelo p1.d, xzr, x9
-; CHECK-NOSVE2-NEXT:    cntp x10, p0, p0.d
-; CHECK-NOSVE2-NEXT:    and x10, x10, #0xff
-; CHECK-NOSVE2-NEXT:  .LBB13_2: // %vector.body
-; CHECK-NOSVE2-NEXT:    // =>This Inner Loop Header: Depth=1
-; CHECK-NOSVE2-NEXT:    and p1.b, p1/z, p1.b, p0.b
-; CHECK-NOSVE2-NEXT:    ld1d { z0.d }, p1/z, [x0, x8, lsl #3]
-; CHECK-NOSVE2-NEXT:    ld1d { z1.d }, p1/z, [x1, x8, lsl #3]
-; CHECK-NOSVE2-NEXT:    add z0.d, z1.d, z0.d
-; CHECK-NOSVE2-NEXT:    st1d { z0.d }, p1, [x2, x8, lsl #3]
-; CHECK-NOSVE2-NEXT:    add x8, x8, x10
-; CHECK-NOSVE2-NEXT:    whilelo p1.d, x8, x9
-; CHECK-NOSVE2-NEXT:    b.mi .LBB13_2
-; CHECK-NOSVE2-NEXT:  .LBB13_3: // %for.cond.cleanup
-; CHECK-NOSVE2-NEXT:    ret
-entry:
-  %cmp9 = icmp sgt i32 %n, 0
-  br i1 %cmp9, label %for.body.preheader, label %for.cond.cleanup
-
-for.body.preheader:
-  %c12 = ptrtoint ptr %c to i64
-  %a13 = ptrtoint ptr %a to i64
-  %b14 = ptrtoint ptr %b to i64
-  %wide.trip.count = zext nneg i32 %n to i64
-  %sub.diff = sub i64 %a13, %c12
-  %diff = sdiv i64 %sub.diff, 8
-  %neg.compare = icmp slt i64 %sub.diff, -7
-  %.splatinsert = insertelement <vscale x 2 x i1> poison, i1 %neg.compare, i64 0
-  %.splat = shufflevector <vscale x 2 x i1> %.splatinsert, <vscale x 2 x i1> poison, <vscale x 2 x i32> zeroinitializer
-  %ptr.diff.lane.mask = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 0, i64 %diff)
-  %active.lane.mask.alias = or <vscale x 2 x i1> %ptr.diff.lane.mask, %.splat
-  %sub.diff16 = sub i64 %b14, %c12
-  %diff17 = sdiv i64 %sub.diff16, 8
-  %neg.compare18 = icmp slt i64 %sub.diff16, -7
-  %.splatinsert19 = insertelement <vscale x 2 x i1> poison, i1 %neg.compare18, i64 0
-  %.splat20 = shufflevector <vscale x 2 x i1> %.splatinsert19, <vscale x 2 x i1> poison, <vscale x 2 x i32> zeroinitializer
-  %ptr.diff.lane.mask21 = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 0, i64 %diff17)
-  %active.lane.mask.alias22 = or <vscale x 2 x i1> %ptr.diff.lane.mask21, %.splat20
-  %0 = and <vscale x 2 x i1> %active.lane.mask.alias, %active.lane.mask.alias22
-  %active.lane.mask.entry = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 0, i64 %wide.trip.count)
-  %1 = zext <vscale x 2 x i1> %0 to <vscale x 2 x i8>
-  %2 = tail call i8 @llvm.vector.reduce.add.nxv2i8(<vscale x 2 x i8> %1)
-  %3 = zext i8 %2 to i64
-  br label %vector.body
-
-vector.body:
-  %index = phi i64 [ 0, %for.body.preheader ], [ %index.next, %vector.body ]
-  %active.lane.mask = phi <vscale x 2 x i1> [ %active.lane.mask.entry, %for.body.preheader ], [ %active.lane.mask.next, %vector.body ]
-  %4 = and <vscale x 2 x i1> %active.lane.mask, %0
-  %5 = getelementptr inbounds i64, ptr %a, i64 %index
-  %wide.masked.load = tail call <vscale x 2 x i64> @llvm.masked.load.nxv2i64.p0(ptr %5, i32 8, <vscale x 2 x i1> %4, <vscale x 2 x i64> poison)
-  %6 = getelementptr inbounds i64, ptr %b, i64 %index
-  %wide.masked.load23 = tail call <vscale x 2 x i64> @llvm.masked.load.nxv2i64.p0(ptr %6, i32 8, <vscale x 2 x i1> %4, <vscale x 2 x i64> poison)
-  %7 = add <vscale x 2 x i64> %wide.masked.load23, %wide.masked.load
-  %8 = getelementptr inbounds i64, ptr %c, i64 %index
-  tail call void @llvm.masked.store.nxv2i64.p0(<vscale x 2 x i64> %7, ptr %8, i32 8, <vscale x 2 x i1> %4)
-  %index.next = add i64 %index, %3
-  %active.lane.mask.next = tail call <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64 %index.next, i64 %wide.trip.count)
-  %9 = extractelement <vscale x 2 x i1> %active.lane.mask.next, i64 0
-  br i1 %9, label %vector.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-}
-
-declare i64 @llvm.vscale.i64()
-
-declare <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i64(i64, i64)
-
-declare <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0(ptr nocapture, i32 immarg, <vscale x 16 x i1>, <vscale x 16 x i8>)
-
-declare void @llvm.masked.store.nxv16i8.p0(<vscale x 16 x i8>, ptr nocapture, i32 immarg, <vscale x 16 x i1>)
-
-declare <vscale x 8 x i1> @llvm.get.active.lane.mask.nxv8i1.i64(i64, i64)
-
-declare <vscale x 8 x i16> @llvm.masked.load.nxv8i16.p0(ptr nocapture, i32 immarg, <vscale x 8 x i1>, <vscale x 8 x i16>)
-
-declare void @llvm.masked.store.nxv8i16.p0(<vscale x 8 x i16>, ptr nocapture, i32 immarg, <vscale x 8 x i1>)
-
-declare <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64, i64)
-
-declare <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr nocapture, i32 immarg, <vscale x 4 x i1>, <vscale x 4 x i32>)
-
-declare void @llvm.masked.store.nxv4i32.p0(<vscale x 4 x i32>, ptr nocapture, i32 immarg, <vscale x 4 x i1>)
-
-declare <vscale x 2 x i1> @llvm.get.active.lane.mask.nxv2i1.i64(i64, i64)
-
-declare <vscale x 2 x i64> @llvm.masked.load.nxv2i64.p0(ptr nocapture, i32 immarg, <vscale x 2 x i1>, <vscale x 2 x i64>)
-
-declare void @llvm.masked.store.nxv2i64.p0(<vscale x 2 x i64>, ptr nocapture, i32 immarg, <vscale x 2 x i1>)

>From e984b6120792f90ef00cd9ac23fde16adee73a5a Mon Sep 17 00:00:00 2001
From: Samuel Tebbs <samuel.tebbs at arm.com>
Date: Thu, 21 Nov 2024 13:53:11 +0000
Subject: [PATCH 2/2] Fix intrinsic signature in docs

---
 llvm/docs/LangRef.rst | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index c9589d5af8ebbe..1ad4b5c3b7e860 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -23477,7 +23477,7 @@ Examples:
 
 .. _int_experimental_get_alias_lane_mask:
 
-'``llvm.get.alias.lane.mask.*``' Intrinsics
+'``llvm.experimental.get.alias.lane.mask.*``' Intrinsics
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Syntax:
@@ -23486,10 +23486,10 @@ This is an overloaded intrinsic.
 
 ::
 
-      declare <4 x i1> @llvm.experimental.get.alias.lane.mask.v4i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
-      declare <8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
-      declare <16 x i1> @llvm.experimental.get.alias.lane.mask.v16i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
-      declare <vscale x 16 x i1> @llvm.experimental.get.alias.lane.mask.nxv16i1.i64(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <4 x i1> @llvm.experimental.get.alias.lane.mask.v4i1.i64.i64(i64 %ptrA, i64 %ptrB, i64 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <8 x i1> @llvm.experimental.get.alias.lane.mask.v8i1.i64.i64(i64 %ptrA, i64 %ptrB, i64 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <16 x i1> @llvm.experimental.get.alias.lane.mask.v16i1.i64.i32(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
+      declare <vscale x 16 x i1> @llvm.experimental.get.alias.lane.mask.nxv16i1.i64.i32(i64 %ptrA, i64 %ptrB, i32 immarg %elementSize, i1 immarg %writeAfterRead)
 
 
 Overview:



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