[llvm] 264afb9 - [NFC][llvm] Make the contructors of `ElementCount` private.

Voss, Matthew via llvm-commits llvm-commits at lists.llvm.org
Wed Aug 19 12:45:20 PDT 2020


Hi Francesco,

This commit is causing build failures on the PS4 windows bot. Could you take a look?

If this failure persists for long enough, I'm going to need to revert it to unclog our CI and the buildbots.

http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/34173

Thanks,
Matthew 

> -----Original Message-----
> From: llvm-commits <llvm-commits-bounces at lists.llvm.org> On Behalf Of
> Francesco Petrogalli via llvm-commits
> Sent: Wednesday, August 19, 2020 9:27 AM
> To: llvm-commits at lists.llvm.org
> Subject: [llvm] 264afb9 - [NFC][llvm] Make the contructors of
> `ElementCount` private.
> 
> 
> Author: Francesco Petrogalli
> Date: 2020-08-19T16:26:44Z
> New Revision: 264afb9e6aebc98c353644dd0700bec808501cab
> 
> URL: https://github.com/llvm/llvm-
> project/commit/264afb9e6aebc98c353644dd0700bec808501cab
> DIFF: https://github.com/llvm/llvm-
> project/commit/264afb9e6aebc98c353644dd0700bec808501cab.diff
> 
> LOG: [NFC][llvm] Make the contructors of `ElementCount` private.
> 
> Differential Revision: https://reviews.llvm.org/D86120
> 
> Added:
> 
> 
> Modified:
>     llvm/include/llvm/Analysis/VectorUtils.h
>     llvm/include/llvm/IR/DerivedTypes.h
>     llvm/include/llvm/IR/Intrinsics.h
>     llvm/include/llvm/Support/MachineValueType.h
>     llvm/include/llvm/Support/TypeSize.h
>     llvm/lib/Analysis/VFABIDemangling.cpp
>     llvm/lib/AsmParser/LLParser.cpp
>     llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
>     llvm/lib/CodeGen/TargetLoweringBase.cpp
>     llvm/lib/CodeGen/ValueTypes.cpp
>     llvm/lib/IR/ConstantFold.cpp
>     llvm/lib/IR/Constants.cpp
>     llvm/lib/IR/IRBuilder.cpp
>     llvm/lib/IR/Instructions.cpp
>     llvm/lib/IR/Type.cpp
>     llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
>     llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
>     llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
>     llvm/unittests/Analysis/VectorUtilsTest.cpp
>     llvm/unittests/CodeGen/ScalableVectorMVTsTest.cpp
>     llvm/unittests/FuzzMutate/OperationsTest.cpp
>     llvm/unittests/IR/ConstantsTest.cpp
>     llvm/unittests/IR/PatternMatch.cpp
>     llvm/unittests/IR/VectorTypesTest.cpp
>     llvm/unittests/IR/VerifierTest.cpp
> 
> Removed:
> 
> 
> 
> ##########################################################################
> ######
> diff  --git a/llvm/include/llvm/Analysis/VectorUtils.h
> b/llvm/include/llvm/Analysis/VectorUtils.h
> index a860652b2332..f77048d45d01 100644
> --- a/llvm/include/llvm/Analysis/VectorUtils.h
> +++ b/llvm/include/llvm/Analysis/VectorUtils.h
> @@ -99,7 +99,8 @@ struct VFShape {
>    // Retrieve the VFShape that can be used to map a (scalar) function to
> itself,
>    // with VF = 1.
>    static VFShape getScalarShape(const CallInst &CI) {
> -    return VFShape::get(CI, /*EC*/ {1, false}, /*HasGlobalPredicate*/
> false);
> +    return VFShape::get(CI, ElementCount::getFixed(1),
> +                        /*HasGlobalPredicate*/ false);
>    }
> 
>    // Retrieve the basic vectorization shape of the function, where all @@
> -305,7 +306,7 @@ typedef unsigned ID;  inline Type *ToVectorTy(Type
> *Scalar, unsigned VF, bool isScalable = false) {
>    if (Scalar->isVoidTy() || VF == 1)
>      return Scalar;
> -  return VectorType::get(Scalar, {VF, isScalable});
> +  return VectorType::get(Scalar, ElementCount::get(VF, isScalable));
>  }
> 
>  /// Identify if the intrinsic is trivially vectorizable.
> 
> diff  --git a/llvm/include/llvm/IR/DerivedTypes.h
> b/llvm/include/llvm/IR/DerivedTypes.h
> index 843809909d7c..1837f6808f24 100644
> --- a/llvm/include/llvm/IR/DerivedTypes.h
> +++ b/llvm/include/llvm/IR/DerivedTypes.h
> @@ -446,7 +446,8 @@ class VectorType : public Type {
> 
>    static VectorType *get(Type *ElementType, unsigned NumElements,
>                           bool Scalable) {
> -    return VectorType::get(ElementType, {NumElements, Scalable});
> +    return VectorType::get(ElementType,
> +                           ElementCount::get(NumElements, Scalable));
>    }
> 
>    static VectorType *get(Type *ElementType, const VectorType *Other) { @@
> -640,7 +641,7 @@ class ScalableVectorType : public VectorType {  };
> 
>  inline ElementCount VectorType::getElementCount() const {
> -  return ElementCount(ElementQuantity, isa<ScalableVectorType>(this));
> +  return ElementCount::get(ElementQuantity,
> + isa<ScalableVectorType>(this));
>  }
> 
>  /// Class to represent pointers.
> 
> diff  --git a/llvm/include/llvm/IR/Intrinsics.h
> b/llvm/include/llvm/IR/Intrinsics.h
> index a9e6525e2f3d..3fc7c5a2ceb4 100644
> --- a/llvm/include/llvm/IR/Intrinsics.h
> +++ b/llvm/include/llvm/IR/Intrinsics.h
> @@ -134,7 +134,9 @@ namespace Intrinsic {
>        unsigned Pointer_AddressSpace;
>        unsigned Struct_NumElements;
>        unsigned Argument_Info;
> -      ElementCount Vector_Width;
> +      // There is no default constructor in `ElementCount`, so we need
> +      // to explicitly initialize this field with a value.
> +      ElementCount Vector_Width = ElementCount::getFixed(0);
>      };
> 
>      enum ArgKind {
> @@ -190,8 +192,7 @@ namespace Intrinsic {
>      static IITDescriptor getVector(unsigned Width, bool IsScalable) {
>        IITDescriptor Result;
>        Result.Kind = Vector;
> -      Result.Vector_Width.Min = Width;
> -      Result.Vector_Width.Scalable = IsScalable;
> +      Result.Vector_Width = ElementCount::get(Width, IsScalable);
>        return Result;
>      }
>    };
> 
> diff  --git a/llvm/include/llvm/Support/MachineValueType.h
> b/llvm/include/llvm/Support/MachineValueType.h
> index 3bb8220e72e5..172d4fd8c275 100644
> --- a/llvm/include/llvm/Support/MachineValueType.h
> +++ b/llvm/include/llvm/Support/MachineValueType.h
> @@ -737,7 +737,7 @@ namespace llvm {
>      }
> 
>      ElementCount getVectorElementCount() const {
> -      return { getVectorNumElements(), isScalableVector() };
> +      return ElementCount::get(getVectorNumElements(),
> + isScalableVector());
>      }
> 
>      /// Given a vector type, return the minimum number of elements it
> contains.
> 
> diff  --git a/llvm/include/llvm/Support/TypeSize.h
> b/llvm/include/llvm/Support/TypeSize.h
> index d5a3614155b8..a95d38863035 100644
> --- a/llvm/include/llvm/Support/TypeSize.h
> +++ b/llvm/include/llvm/Support/TypeSize.h
> @@ -26,16 +26,23 @@ namespace llvm {
>  template <typename T> struct DenseMapInfo;
> 
>  class ElementCount {
> +private:
> +  /// Prevent code from using initializer-list contructors like
> +  /// ElementCount EC = {<unsigned>, <bool>}. The static `get*`
> +  /// methods below are preferred, as users should always make a
> +  /// conscious choice on the type of `ElementCount` they are
> +  /// requesting.
> +  ElementCount(unsigned Min, bool Scalable) : Min(Min),
> +Scalable(Scalable) {}
> +
>  public:
> +  /// No default constructor. Users should use one of the `get*`  ///
> + static methods below, as they should always make a conscious  ///
> + choice on the type of `ElementCount` they are requesting.
> +  ElementCount() = delete;
>    unsigned Min;  // Minimum number of vector elements.
>    bool Scalable; // If true, NumElements is a multiple of 'Min'
> determined
>                   // at runtime rather than compile time.
> 
> -  ElementCount() = default;
> -
> -  ElementCount(unsigned Min, bool Scalable)
> -  : Min(Min), Scalable(Scalable) {}
> -
>    ElementCount operator*(unsigned RHS) {
>      return { Min * RHS, Scalable };
>    }
> @@ -54,7 +61,13 @@ class ElementCount {
>    bool operator!=(unsigned RHS) const { return !(*this == RHS); }
> 
>    ElementCount NextPowerOf2() const {
> -    return ElementCount(llvm::NextPowerOf2(Min), Scalable);
> +    return {(unsigned)llvm::NextPowerOf2(Min), Scalable};  }
> +
> +  static ElementCount getFixed(unsigned Min) { return {Min, false}; }
> + static ElementCount getScalable(unsigned Min) { return {Min, true}; }
> + static ElementCount get(unsigned Min, bool Scalable) {
> +    return {Min, Scalable};
>    }
>  };
> 
> @@ -279,8 +292,12 @@ inline TypeSize alignTo(TypeSize Size, uint64_t
> Align) {  }
> 
>  template <> struct DenseMapInfo<ElementCount> {
> -  static inline ElementCount getEmptyKey() { return {~0U, true}; }
> -  static inline ElementCount getTombstoneKey() { return {~0U - 1, false};
> }
> +  static inline ElementCount getEmptyKey() {
> +    return ElementCount::getScalable(~0U);  }  static inline
> + ElementCount getTombstoneKey() {
> +    return ElementCount::getFixed(~0U - 1);  }
>    static unsigned getHashValue(const ElementCount& EltCnt) {
>      if (EltCnt.Scalable)
>        return (EltCnt.Min * 37U) - 1U;
> 
> diff  --git a/llvm/lib/Analysis/VFABIDemangling.cpp
> b/llvm/lib/Analysis/VFABIDemangling.cpp
> index 0192a216b2f7..56155b28132e 100644
> --- a/llvm/lib/Analysis/VFABIDemangling.cpp
> +++ b/llvm/lib/Analysis/VFABIDemangling.cpp
> @@ -310,7 +310,7 @@ ElementCount getECFromSignature(FunctionType
> *Signature) {
>      if (auto *VTy = dyn_cast<VectorType>(Ty))
>        return VTy->getElementCount();
> 
> -  return ElementCount(/*Min=*/1, /*Scalable=*/false);
> +  return ElementCount::getFixed(/*Min=*/1);
>  }
>  } // namespace
> 
> 
> diff  --git a/llvm/lib/AsmParser/LLParser.cpp
> b/llvm/lib/AsmParser/LLParser.cpp index 06e5709983ea..fec10b8605c2 100644
> --- a/llvm/lib/AsmParser/LLParser.cpp
> +++ b/llvm/lib/AsmParser/LLParser.cpp
> @@ -7395,7 +7395,7 @@ int LLParser::ParseGetElementPtr(Instruction *&Inst,
> PerFunctionState &PFS) {
>    // All vector parameters should have the same vector width.
>    ElementCount GEPWidth = BaseType->isVectorTy()
>                                ? cast<VectorType>(BaseType)-
> >getElementCount()
> -                              : ElementCount(0, false);
> +                              : ElementCount::getFixed(0);
> 
>    while (EatIfPresent(lltok::comma)) {
>      if (Lex.getKind() == lltok::MetadataVar) { @@ -7408,7 +7408,7 @@ int
> LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
> 
>      if (auto *ValVTy = dyn_cast<VectorType>(Val->getType())) {
>        ElementCount ValNumEl = ValVTy->getElementCount();
> -      if (GEPWidth != ElementCount(0, false) && GEPWidth != ValNumEl)
> +      if (GEPWidth != ElementCount::getFixed(0) && GEPWidth !=
> + ValNumEl)
>          return Error(EltLoc,
>            "getelementptr vector index has a wrong number of elements");
>        GEPWidth = ValNumEl;
> 
> diff  --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
> b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
> index fd1859afee43..80a2db2a6b24 100644
> --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
> +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
> @@ -729,15 +729,15 @@ static void getCopyToPartsVector(SelectionDAG &DAG,
> const SDLoc &DL,
>    assert(IntermediateVT.isScalableVector() == ValueVT.isScalableVector()
> &&
>           "Mixing scalable and fixed vectors when copying in parts");
> 
> -  ElementCount DestEltCnt;
> +  Optional<ElementCount> DestEltCnt;
> 
>    if (IntermediateVT.isVector())
>      DestEltCnt = IntermediateVT.getVectorElementCount() *
> NumIntermediates;
>    else
> -    DestEltCnt = ElementCount(NumIntermediates, false);
> +    DestEltCnt = ElementCount::getFixed(NumIntermediates);
> 
>    EVT BuiltVectorTy = EVT::getVectorVT(
> -      *DAG.getContext(), IntermediateVT.getScalarType(), DestEltCnt);
> +      *DAG.getContext(), IntermediateVT.getScalarType(),
> + DestEltCnt.getValue());
>    if (ValueVT != BuiltVectorTy) {
>      if (SDValue Widened = widenVectorToPartType(DAG, Val, DL,
> BuiltVectorTy))
>        Val = Widened;
> @@ -3746,7 +3746,7 @@ void SelectionDAGBuilder::visitGetElementPtr(const
> User &I) {
>    bool IsVectorGEP = I.getType()->isVectorTy();
>    ElementCount VectorElementCount =
>        IsVectorGEP ? cast<VectorType>(I.getType())->getElementCount()
> -                  : ElementCount(0, false);
> +                  : ElementCount::getFixed(0);
> 
>    if (IsVectorGEP && !N.getValueType().isVector()) {
>      LLVMContext &Context = *DAG.getContext();
> 
> diff  --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp
> b/llvm/lib/CodeGen/TargetLoweringBase.cpp
> index 63e55c9c47e3..868302abc999 100644
> --- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
> +++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
> @@ -866,7 +866,7 @@ TargetLoweringBase::getTypeConversion(LLVMContext
> &Context, EVT VT) const {
>    if (NumElts == 1)
>      return LegalizeKind(TypeScalarizeVector, EltVT);
> 
> -  if (VT.getVectorElementCount() == ElementCount(1, true))
> +  if (VT.getVectorElementCount() == ElementCount::getScalable(1))
>      report_fatal_error("Cannot legalize this vector");
> 
>    // Try to widen vector elements until the element type is a power of
> two and
> 
> diff  --git a/llvm/lib/CodeGen/ValueTypes.cpp
> b/llvm/lib/CodeGen/ValueTypes.cpp index 57e26e8cb7a1..c3974519bfc6 100644
> --- a/llvm/lib/CodeGen/ValueTypes.cpp
> +++ b/llvm/lib/CodeGen/ValueTypes.cpp
> @@ -49,8 +49,7 @@ EVT EVT::getExtendedVectorVT(LLVMContext &Context, EVT
> VT, unsigned NumElements,
> 
>  EVT EVT::getExtendedVectorVT(LLVMContext &Context, EVT VT, ElementCount
> EC) {
>    EVT ResultVT;
> -  ResultVT.LLVMTy =
> -      VectorType::get(VT.getTypeForEVT(Context), {EC.Min, EC.Scalable});
> +  ResultVT.LLVMTy = VectorType::get(VT.getTypeForEVT(Context), EC);
>    assert(ResultVT.isExtended() && "Type is not extended!");
>    return ResultVT;
>  }
> 
> diff  --git a/llvm/lib/IR/ConstantFold.cpp b/llvm/lib/IR/ConstantFold.cpp
> index 2d3afca6d58c..e5c4250665e4 100644
> --- a/llvm/lib/IR/ConstantFold.cpp
> +++ b/llvm/lib/IR/ConstantFold.cpp
> @@ -919,7 +919,8 @@ Constant
> *llvm::ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2,
>                                                       ArrayRef<int> Mask)
> {
>    auto *V1VTy = cast<VectorType>(V1->getType());
>    unsigned MaskNumElts = Mask.size();
> -  ElementCount MaskEltCount = {MaskNumElts,
> isa<ScalableVectorType>(V1VTy)};
> +  auto MaskEltCount =
> +      ElementCount::get(MaskNumElts, isa<ScalableVectorType>(V1VTy));
>    Type *EltTy = V1VTy->getElementType();
> 
>    // Undefined shuffle mask -> undefined value.
> 
> diff  --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp index
> cbbcca20ea51..b252ef71c8ee 100644
> --- a/llvm/lib/IR/Constants.cpp
> +++ b/llvm/lib/IR/Constants.cpp
> @@ -2245,7 +2245,7 @@ Constant *ConstantExpr::getGetElementPtr(Type *Ty,
> Constant *C,
>    unsigned AS = C->getType()->getPointerAddressSpace();
>    Type *ReqTy = DestTy->getPointerTo(AS);
> 
> -  ElementCount EltCount = {0, false};
> +  auto EltCount = ElementCount::getFixed(0);
>    if (VectorType *VecTy = dyn_cast<VectorType>(C->getType()))
>      EltCount = VecTy->getElementCount();
>    else
> @@ -2938,7 +2938,7 @@ Constant *ConstantDataVector::getSplat(unsigned
> NumElts, Constant *V) {
>        return getFP(V->getType(), Elts);
>      }
>    }
> -  return ConstantVector::getSplat({NumElts, false}, V);
> +  return ConstantVector::getSplat(ElementCount::getFixed(NumElts), V);
>  }
> 
> 
> 
> diff  --git a/llvm/lib/IR/IRBuilder.cpp b/llvm/lib/IR/IRBuilder.cpp index
> f059f80ecec4..1de25c25cd05 100644
> --- a/llvm/lib/IR/IRBuilder.cpp
> +++ b/llvm/lib/IR/IRBuilder.cpp
> @@ -997,7 +997,7 @@ Value *IRBuilderBase::CreateStripInvariantGroup(Value
> *Ptr) {
> 
>  Value *IRBuilderBase::CreateVectorSplat(unsigned NumElts, Value *V,
>                                          const Twine &Name) {
> -  ElementCount EC(NumElts, false);
> +  auto EC = ElementCount::getFixed(NumElts);
>    return CreateVectorSplat(EC, V, Name);  }
> 
> 
> diff  --git a/llvm/lib/IR/Instructions.cpp b/llvm/lib/IR/Instructions.cpp
> index 2f17a0d73af4..7a3fbc367d1c 100644
> --- a/llvm/lib/IR/Instructions.cpp
> +++ b/llvm/lib/IR/Instructions.cpp
> @@ -3330,9 +3330,9 @@ CastInst::castIsValid(Instruction::CastOps op, Value
> *S, Type *DstTy) {
>    // scalar types means that checking that vector lengths match also
> checks that
>    // scalars are not being converted to vectors or vectors to scalars).
>    ElementCount SrcEC = SrcIsVec ? cast<VectorType>(SrcTy)-
> >getElementCount()
> -                                : ElementCount(0, false);
> +                                : ElementCount::getFixed(0);
>    ElementCount DstEC = DstIsVec ? cast<VectorType>(DstTy)-
> >getElementCount()
> -                                : ElementCount(0, false);
> +                                : ElementCount::getFixed(0);
> 
>    // Switch on the opcode provided
>    switch (op) {
> @@ -3390,9 +3390,9 @@ CastInst::castIsValid(Instruction::CastOps op, Value
> *S, Type *DstTy) {
>      if (SrcIsVec && DstIsVec)
>        return SrcEC == DstEC;
>      if (SrcIsVec)
> -      return SrcEC == ElementCount(1, false);
> +      return SrcEC == ElementCount::getFixed(1);
>      if (DstIsVec)
> -      return DstEC == ElementCount(1, false);
> +      return DstEC == ElementCount::getFixed(1);
> 
>      return true;
>    }
> 
> diff  --git a/llvm/lib/IR/Type.cpp b/llvm/lib/IR/Type.cpp index
> d869a6e07cca..1cf0d1345ab3 100644
> --- a/llvm/lib/IR/Type.cpp
> +++ b/llvm/lib/IR/Type.cpp
> @@ -619,7 +619,7 @@ FixedVectorType *FixedVectorType::get(Type
> *ElementType, unsigned NumElts) {
>                                              "be an integer, floating
> point, or "
>                                              "pointer type.");
> 
> -  ElementCount EC(NumElts, false);
> +  auto EC = ElementCount::getFixed(NumElts);
> 
>    LLVMContextImpl *pImpl = ElementType->getContext().pImpl;
>    VectorType *&Entry = ElementType->getContext() @@ -641,7 +641,7 @@
> ScalableVectorType *ScalableVectorType::get(Type *ElementType,
>                                              "be an integer, floating
> point, or "
>                                              "pointer type.");
> 
> -  ElementCount EC(MinNumElts, true);
> +  auto EC = ElementCount::getScalable(MinNumElts);
> 
>    LLVMContextImpl *pImpl = ElementType->getContext().pImpl;
>    VectorType *&Entry = ElementType->getContext()
> 
> diff  --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
> b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
> index b37947495a43..6c7624304e90 100644
> --- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
> +++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
> @@ -11985,7 +11985,8 @@ static SDValue LowerSVEIntrinsicEXT(SDNode *N,
> SelectionDAG &DAG) {
> 
>    unsigned ElemSize = VT.getVectorElementType().getSizeInBits() / 8;
>    unsigned ByteSize = VT.getSizeInBits().getKnownMinSize() / 8;
> -  EVT ByteVT = EVT::getVectorVT(Ctx, MVT::i8, { ByteSize, true });
> +  EVT ByteVT =
> +      EVT::getVectorVT(Ctx, MVT::i8,
> + ElementCount::getScalable(ByteSize));
> 
>    // Convert everything to the domain of EXT (i.e bytes).
>    SDValue Op0 = DAG.getNode(ISD::BITCAST, dl, ByteVT, N->getOperand(1));
> 
> diff  --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
> b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
> index ee8289983687..90a8d4703d65 100644
> --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
> +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
> @@ -1804,10 +1804,10 @@ void
> InnerLoopVectorizer::createVectorIntOrFpInductionPHI(
>    // FIXME: If the step is non-constant, we create the vector splat with
>    //        IRBuilder. IRBuilder can constant-fold the multiply, but it
> doesn't
>    //        handle a constant vector splat.
> -  Value *SplatVF =
> -      isa<Constant>(Mul)
> -          ? ConstantVector::getSplat({VF, false}, cast<Constant>(Mul))
> -          : Builder.CreateVectorSplat(VF, Mul);
> +  Value *SplatVF = isa<Constant>(Mul)
> +                       ?
> ConstantVector::getSplat(ElementCount::getFixed(VF),
> +                                                  cast<Constant>(Mul))
> +                       : Builder.CreateVectorSplat(VF, Mul);
>    Builder.restoreIP(CurrIP);
> 
>    // We may need to add the step a number of times, depending on the
> unroll @@ -3399,7 +3399,8 @@ unsigned
> LoopVectorizationCostModel::getVectorCallCost(CallInst *CI,
>    // If we can't emit a vector call for this function, then the currently
> found
>    // cost is the cost we need to return.
>    NeedToScalarize = true;
> -  VFShape Shape = VFShape::get(*CI, {VF, false}, false
> /*HasGlobalPred*/);
> +  VFShape Shape =
> +      VFShape::get(*CI, ElementCount::getFixed(VF), false
> + /*HasGlobalPred*/);
>    Function *VecFunc = VFDatabase(*CI).getVectorizedFunction(Shape);
> 
>    if (!TLI || CI->isNoBuiltin() || !VecFunc) @@ -3860,7 +3861,7 @@ void
> InnerLoopVectorizer::fixReduction(PHINode *Phi) {
>        // incoming scalar reduction.
>        VectorStart = ReductionStartValue;
>      } else {
> -      Identity = ConstantVector::getSplat({VF, false}, Iden);
> +      Identity = ConstantVector::getSplat(ElementCount::getFixed(VF),
> + Iden);
> 
>        // This vector is the Identity vector where the first element is
> the
>        // incoming scalar reduction.
> @@ -4541,8 +4542,8 @@ void
> InnerLoopVectorizer::widenCallInstruction(CallInst &I, VPUser
> &ArgOperands,
>        assert(VectorF && "Can't retrieve vector intrinsic.");
>      } else {
>        // Use vector version of the function call.
> -      const VFShape Shape =
> -          VFShape::get(*CI, {VF, false} /*EC*/, false /*HasGlobalPred*/);
> +      const VFShape Shape = VFShape::get(*CI, ElementCount::getFixed(VF),
> +                                         false /*HasGlobalPred*/);
>  #ifndef NDEBUG
>        assert(VFDatabase(*CI).getVectorizedFunction(Shape) != nullptr &&
>               "Can't create vector function.");
> 
> diff  --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
> b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
> index 6a5e8e25951c..6d8a12ab25ad 100644
> --- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
> +++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
> @@ -3029,7 +3029,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL,
> unsigned Depth,
>        Intrinsic::ID ID = getVectorIntrinsicIDForCall(CI, TLI);
> 
>        VFShape Shape = VFShape::get(
> -          *CI, {static_cast<unsigned int>(VL.size()), false
> /*Scalable*/},
> +          *CI, ElementCount::getFixed(static_cast<unsigned
> + int>(VL.size())),
>            false /*HasGlobalPred*/);
>        Function *VecFunc = VFDatabase(*CI).getVectorizedFunction(Shape);
> 
> @@ -3264,9 +3264,9 @@ getVectorCallCosts(CallInst *CI, VectorType *VecTy,
> TargetTransformInfo *TTI,
>    int IntrinsicCost =
>      TTI->getIntrinsicInstrCost(CostAttrs, TTI::TCK_RecipThroughput);
> 
> -  auto Shape =
> -      VFShape::get(*CI, {static_cast<unsigned>(VecTy->getNumElements()),
> false},
> -                   false /*HasGlobalPred*/);
> +  auto Shape = VFShape::get(*CI,
> ElementCount::getFixed(static_cast<unsigned>(
> +                                     VecTy->getNumElements())),
> +                            false /*HasGlobalPred*/);
>    Function *VecFunc = VFDatabase(*CI).getVectorizedFunction(Shape);
>    int LibCost = IntrinsicCost;
>    if (!CI->isNoBuiltin() && VecFunc) {
> @@ -4553,9 +4553,10 @@ Value *BoUpSLP::vectorizeTree(TreeEntry *E) {
> 
>        Function *CF;
>        if (!UseIntrinsic) {
> -        VFShape Shape = VFShape::get(
> -            *CI, {static_cast<unsigned>(VecTy->getNumElements()), false},
> -            false /*HasGlobalPred*/);
> +        VFShape Shape =
> +            VFShape::get(*CI,
> ElementCount::getFixed(static_cast<unsigned>(
> +                                  VecTy->getNumElements())),
> +                         false /*HasGlobalPred*/);
>          CF = VFDatabase(*CI).getVectorizedFunction(Shape);
>        } else {
>          Type *Tys[] = {FixedVectorType::get(CI->getType(), E-
> >Scalars.size())};
> 
> diff  --git a/llvm/unittests/Analysis/VectorUtilsTest.cpp
> b/llvm/unittests/Analysis/VectorUtilsTest.cpp
> index 731ebdfe16f5..c4e19c7fa810 100644
> --- a/llvm/unittests/Analysis/VectorUtilsTest.cpp
> +++ b/llvm/unittests/Analysis/VectorUtilsTest.cpp
> @@ -93,7 +93,8 @@ TEST_F(BasicTest, isSplat) {
>    Value *SplatC = IRB.CreateVectorSplat(5, ScalarC);
>    EXPECT_TRUE(isSplatValue(SplatC));
> 
> -  Value *SplatC_SVE = IRB.CreateVectorSplat(ElementCount(5, true),
> ScalarC);
> +  Value *SplatC_SVE =
> +      IRB.CreateVectorSplat(ElementCount::getScalable(5), ScalarC);
>    EXPECT_TRUE(isSplatValue(SplatC_SVE));
> 
>    // FIXME: Constant splat analysis does not allow undef elements.
> @@ -502,7 +503,7 @@ class VFShapeAPITest : public testing::Test {
>    SmallVector<VFParameter, 8> &ExpectedParams = Expected.Parameters;
> 
>    void buildShape(unsigned VF, bool IsScalable, bool HasGlobalPred) {
> -    Shape = VFShape::get(*CI, {VF, IsScalable}, HasGlobalPred);
> +    Shape = VFShape::get(*CI, ElementCount::get(VF, IsScalable),
> + HasGlobalPred);
>    }
> 
>    bool validParams(ArrayRef<VFParameter> Parameters) {
> 
> diff  --git a/llvm/unittests/CodeGen/ScalableVectorMVTsTest.cpp
> b/llvm/unittests/CodeGen/ScalableVectorMVTsTest.cpp
> index 81c99163229a..f1c4a8bea1f5 100644
> --- a/llvm/unittests/CodeGen/ScalableVectorMVTsTest.cpp
> +++ b/llvm/unittests/CodeGen/ScalableVectorMVTsTest.cpp
> @@ -49,12 +49,12 @@ TEST(ScalableVectorMVTsTest, HelperFuncs) {
>    ASSERT_TRUE(Vnx4i32.isScalableVector());
> 
>    // Create with separate llvm::ElementCount
> -  auto EltCnt = ElementCount(2, true);
> +  auto EltCnt = ElementCount::getScalable(2);
>    EVT Vnx2i32 = EVT::getVectorVT(Ctx, MVT::i32, EltCnt);
>    ASSERT_TRUE(Vnx2i32.isScalableVector());
> 
>    // Create with inline llvm::ElementCount
> -  EVT Vnx2i64 = EVT::getVectorVT(Ctx, MVT::i64, {2, true});
> +  EVT Vnx2i64 = EVT::getVectorVT(Ctx, MVT::i64,
> + ElementCount::getScalable(2));
>    ASSERT_TRUE(Vnx2i64.isScalableVector());
> 
>    // Check that changing scalar types/element count works @@ -66,7 +66,7
> @@ TEST(ScalableVectorMVTsTest, HelperFuncs) {
>    EXPECT_EQ(EVT::getVectorVT(Ctx, MVT::i64, EltCnt / 2), MVT::nxv1i64);
> 
>    // Check that float->int conversion works
> -  EVT Vnx2f64 = EVT::getVectorVT(Ctx, MVT::f64, {2, true});
> +  EVT Vnx2f64 = EVT::getVectorVT(Ctx, MVT::f64,
> + ElementCount::getScalable(2));
>    EXPECT_EQ(Vnx2f64.changeTypeToInteger(), Vnx2i64);
> 
>    // Check fields inside llvm::ElementCount @@ -77,7 +77,7 @@
> TEST(ScalableVectorMVTsTest, HelperFuncs) {
>    // Check that fixed-length vector types aren't scalable.
>    EVT V8i32 = EVT::getVectorVT(Ctx, MVT::i32, 8);
>    ASSERT_FALSE(V8i32.isScalableVector());
> -  EVT V4f64 = EVT::getVectorVT(Ctx, MVT::f64, {4, false});
> +  EVT V4f64 = EVT::getVectorVT(Ctx, MVT::f64,
> + ElementCount::getFixed(4));
>    ASSERT_FALSE(V4f64.isScalableVector());
> 
>    // Check that llvm::ElementCount works for fixed-length types.
> @@ -90,7 +90,8 @@ TEST(ScalableVectorMVTsTest, IRToVTTranslation) {
>    LLVMContext Ctx;
> 
>    Type *Int64Ty = Type::getInt64Ty(Ctx);
> -  VectorType *ScV8Int64Ty = VectorType::get(Int64Ty, {8, true});
> +  VectorType *ScV8Int64Ty =
> +      VectorType::get(Int64Ty, ElementCount::getScalable(8));
> 
>    // Check that we can map a scalable IR type to an MVT
>    MVT Mnxv8i64 = MVT::getVT(ScV8Int64Ty); @@ -110,7 +111,7 @@
> TEST(ScalableVectorMVTsTest, IRToVTTranslation) {
> TEST(ScalableVectorMVTsTest, VTToIRTranslation) {
>    LLVMContext Ctx;
> 
> -  EVT Enxv4f64 = EVT::getVectorVT(Ctx, MVT::f64, {4, true});
> +  EVT Enxv4f64 = EVT::getVectorVT(Ctx, MVT::f64,
> + ElementCount::getScalable(4));
> 
>    Type *Ty = Enxv4f64.getTypeForEVT(Ctx);
>    VectorType *ScV4Float64Ty = cast<VectorType>(Ty);
> 
> diff  --git a/llvm/unittests/FuzzMutate/OperationsTest.cpp
> b/llvm/unittests/FuzzMutate/OperationsTest.cpp
> index c329d053dec9..4de3d43ba960 100644
> --- a/llvm/unittests/FuzzMutate/OperationsTest.cpp
> +++ b/llvm/unittests/FuzzMutate/OperationsTest.cpp
> @@ -92,8 +92,8 @@ TEST(OperationsTest, SourcePreds) {
>        ConstantStruct::get(StructType::create(Ctx, "OpaqueStruct"));
>    Constant *a =
>        ConstantArray::get(ArrayType::get(i32->getType(), 2), {i32, i32});
> -  Constant *v8i8 = ConstantVector::getSplat({8, false}, i8);
> -  Constant *v4f16 = ConstantVector::getSplat({4, false}, f16);
> +  Constant *v8i8 = ConstantVector::getSplat(ElementCount::getFixed(8),
> + i8);  Constant *v4f16 =
> + ConstantVector::getSplat(ElementCount::getFixed(4), f16);
>    Constant *p0i32 =
>        ConstantPointerNull::get(PointerType::get(i32->getType(), 0));
> 
> 
> diff  --git a/llvm/unittests/IR/ConstantsTest.cpp
> b/llvm/unittests/IR/ConstantsTest.cpp
> index f1c1c86293c8..5fb2d2dfc7ac 100644
> --- a/llvm/unittests/IR/ConstantsTest.cpp
> +++ b/llvm/unittests/IR/ConstantsTest.cpp
> @@ -646,8 +646,8 @@ TEST(ConstantsTest, GetSplatValueRoundTrip) {
>    Type *Int8Ty = Type::getInt8Ty(Context);
> 
>    for (unsigned Min : {1, 2, 8}) {
> -    ElementCount ScalableEC = {Min, true};
> -    ElementCount FixedEC = {Min, false};
> +    auto ScalableEC = ElementCount::getScalable(Min);
> +    auto FixedEC = ElementCount::getFixed(Min);
> 
>      for (auto EC : {ScalableEC, FixedEC}) {
>        for (auto *Ty : {FloatTy, Int32Ty, Int8Ty}) {
> 
> diff  --git a/llvm/unittests/IR/PatternMatch.cpp
> b/llvm/unittests/IR/PatternMatch.cpp
> index 8e6e48d05d37..97d8da5b07b4 100644
> --- a/llvm/unittests/IR/PatternMatch.cpp
> +++ b/llvm/unittests/IR/PatternMatch.cpp
> @@ -1445,8 +1445,8 @@ TEST_F(PatternMatchTest, ConstantPredicateType) {
>    EXPECT_TRUE(match(CF32Pi, cstfp_pred_ty<always_true_pred<APFloat>>()));
>    EXPECT_FALSE(match(CF32Pi,
> cstfp_pred_ty<always_false_pred<APFloat>>()));
> 
> -  ElementCount FixedEC(4, false);
> -  ElementCount ScalableEC(4, true);
> +  auto FixedEC = ElementCount::getFixed(4);  auto ScalableEC =
> + ElementCount::getScalable(4);
> 
>    // Vector splat
> 
> 
> diff  --git a/llvm/unittests/IR/VectorTypesTest.cpp
> b/llvm/unittests/IR/VectorTypesTest.cpp
> index 0dbf15ee6fc0..b28e445c97a7 100644
> --- a/llvm/unittests/IR/VectorTypesTest.cpp
> +++ b/llvm/unittests/IR/VectorTypesTest.cpp
> @@ -59,13 +59,13 @@ TEST(VectorTypesTest, FixedLength) {
>        dyn_cast<FixedVectorType>(VectorType::get(Int32Ty, V8Int32Ty));
>    EXPECT_VTY_EQ(V8Int32Ty, V8Int32Ty2);
> 
> -  auto *V8Int16Ty =
> -      dyn_cast<FixedVectorType>(VectorType::get(Int16Ty, {8, false}));
> +  auto *V8Int16Ty = dyn_cast<FixedVectorType>(
> +      VectorType::get(Int16Ty, ElementCount::getFixed(8)));
>    ASSERT_NE(nullptr, V8Int16Ty);
>    EXPECT_EQ(V8Int16Ty->getNumElements(), 8U);
>    EXPECT_EQ(V8Int16Ty->getElementType()->getScalarSizeInBits(), 16U);
> 
> -  ElementCount EltCnt(4, false);
> +  auto EltCnt = ElementCount::getFixed(4);
>    auto *V4Int64Ty = dyn_cast<FixedVectorType>(VectorType::get(Int64Ty,
> EltCnt));
>    ASSERT_NE(nullptr, V4Int64Ty);
>    EXPECT_EQ(V4Int64Ty->getNumElements(), 4U); @@ -153,13 +153,13 @@
> TEST(VectorTypesTest, Scalable) {
>        dyn_cast<ScalableVectorType>(VectorType::get(Int32Ty,
> ScV8Int32Ty));
>    EXPECT_VTY_EQ(ScV8Int32Ty, ScV8Int32Ty2);
> 
> -  auto *ScV8Int16Ty =
> -      dyn_cast<ScalableVectorType>(VectorType::get(Int16Ty, {8, true}));
> +  auto *ScV8Int16Ty = dyn_cast<ScalableVectorType>(
> +      VectorType::get(Int16Ty, ElementCount::getScalable(8)));
>    ASSERT_NE(nullptr, ScV8Int16Ty);
>    EXPECT_EQ(ScV8Int16Ty->getMinNumElements(), 8U);
>    EXPECT_EQ(ScV8Int16Ty->getElementType()->getScalarSizeInBits(), 16U);
> 
> -  ElementCount EltCnt(4, true);
> +  auto EltCnt = ElementCount::getScalable(4);
>    auto *ScV4Int64Ty =
>        dyn_cast<ScalableVectorType>(VectorType::get(Int64Ty, EltCnt));
>    ASSERT_NE(nullptr, ScV4Int64Ty);
> @@ -225,14 +225,15 @@ TEST(VectorTypesTest, BaseVectorType) {
>    Type *Int16Ty = Type::getInt16Ty(Ctx);
>    Type *Int32Ty = Type::getInt32Ty(Ctx);
> 
> -  std::array<VectorType *, 8> VTys = {VectorType::get(Int16Ty, {4,
> true}),
> -                                      VectorType::get(Int16Ty, {4,
> false}),
> -                                      VectorType::get(Int16Ty, {2,
> true}),
> -                                      VectorType::get(Int16Ty, {2,
> false}),
> -                                      VectorType::get(Int32Ty, {4,
> true}),
> -                                      VectorType::get(Int32Ty, {4,
> false}),
> -                                      VectorType::get(Int32Ty, {2,
> true}),
> -                                      VectorType::get(Int32Ty, {2,
> false})};
> +  std::array<VectorType *, 8> VTys = {
> +      VectorType::get(Int16Ty, ElementCount::getScalable(4)),
> +      VectorType::get(Int16Ty, ElementCount::getFixed(4)),
> +      VectorType::get(Int16Ty, ElementCount::getScalable(2)),
> +      VectorType::get(Int16Ty, ElementCount::getFixed(2)),
> +      VectorType::get(Int32Ty, ElementCount::getScalable(4)),
> +      VectorType::get(Int32Ty, ElementCount::getFixed(4)),
> +      VectorType::get(Int32Ty, ElementCount::getScalable(2)),
> +      VectorType::get(Int32Ty, ElementCount::getFixed(2))};
> 
>    /*
>      The comparison matrix is symmetric, so we only check the upper
> triangle:
> 
> diff  --git a/llvm/unittests/IR/VerifierTest.cpp
> b/llvm/unittests/IR/VerifierTest.cpp
> index f6a6a6ec7128..174e3eea3cce 100644
> --- a/llvm/unittests/IR/VerifierTest.cpp
> +++ b/llvm/unittests/IR/VerifierTest.cpp
> @@ -57,7 +57,7 @@ TEST(VerifierTest, Freeze) {
>    ConstantInt *CI = ConstantInt::get(ITy, 0);
> 
>    // Valid type : freeze(<2 x i32>)
> -  Constant *CV = ConstantVector::getSplat({2, false}, CI);
> +  Constant *CV = ConstantVector::getSplat(ElementCount::getFixed(2),
> + CI);
>    FreezeInst *FI_vec = new FreezeInst(CV);
>    FI_vec->insertBefore(RI);
> 
> 
> 
> 
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