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📄 ARMAttributeParser.h(3.2 KB)
📄 ARMBuildAttributes.h(8.6 KB)
📄 ARMEHABI.h(3.72 KB)
📄 ARMTargetParser.def(18.94 KB)
📄 ARMTargetParser.h(8.76 KB)
📄 ARMWinEH.h(18.27 KB)
📄 AlignOf.h(1.56 KB)
📄 Alignment.h(12.95 KB)
📄 Allocator.h(16.54 KB)
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📄 BlockFrequency.h(2.41 KB)
📄 BranchProbability.h(7.92 KB)
📄 BuryPointer.h(1.03 KB)
📄 CBindingWrapping.h(1.86 KB)
📄 CFGDiff.h(9.95 KB)
📄 CFGUpdate.h(4.12 KB)
📄 COM.h(1004 B)
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📄 CachePruning.h(3.5 KB)
📄 Capacity.h(972 B)
📄 Casting.h(13.92 KB)
📄 CheckedArithmetic.h(3.71 KB)
📄 Chrono.h(5.78 KB)
📄 CodeGen.h(1.96 KB)
📄 CodeGenCoverage.h(1.18 KB)
📄 CommandLine.h(71.22 KB)
📄 Compiler.h(19.5 KB)
📄 Compression.h(1.39 KB)
📄 ConvertUTF.h(11.4 KB)
📄 CrashRecoveryContext.h(9.26 KB)
📄 DJB.h(1.05 KB)
📄 DOTGraphTraits.h(5.58 KB)
📄 DataExtractor.h(30.28 KB)
📄 DataTypes.h(775 B)
📄 Debug.h(4.7 KB)
📄 DebugCounter.h(7.01 KB)
📄 DynamicLibrary.h(5.77 KB)
📄 ELFAttributeParser.h(2.22 KB)
📄 ELFAttributes.h(1.02 KB)
📄 Endian.h(14.28 KB)
📄 EndianStream.h(1.93 KB)
📄 Errc.h(3.8 KB)
📄 Errno.h(1.45 KB)
📄 Error.h(43.82 KB)
📄 ErrorHandling.h(6.39 KB)
📄 ErrorOr.h(7.48 KB)
📄 ExtensibleRTTI.h(4.02 KB)
📄 FileCheck.h(6.69 KB)
📄 FileCollector.h(3.74 KB)
📄 FileOutputBuffer.h(3.36 KB)
📄 FileSystem.h(53.03 KB)
📄 FileUtilities.h(3.83 KB)
📄 Format.h(9.45 KB)
📄 FormatAdapters.h(3.38 KB)
📄 FormatCommon.h(2.05 KB)
📄 FormatProviders.h(15.27 KB)
📄 FormatVariadic.h(9.88 KB)
📄 FormatVariadicDetails.h(5.3 KB)
📄 FormattedStream.h(6.42 KB)
📄 GenericDomTree.h(30.89 KB)
📄 GenericDomTreeConstruction.h(63.42 KB)
📄 GenericIteratedDominanceFrontier.h(7.31 KB)
📄 GlobPattern.h(1.35 KB)
📄 GraphWriter.h(11.79 KB)
📄 Host.h(2.68 KB)
📄 InitLLVM.h(1.79 KB)
📄 ItaniumManglingCanonicalizer.h(3.17 KB)
📄 JSON.h(28.25 KB)
📄 KnownBits.h(8.35 KB)
📄 LEB128.h(5.74 KB)
📄 LineIterator.h(2.62 KB)
📄 Locale.h(223 B)
📄 LockFileManager.h(3.13 KB)
📄 LowLevelTypeImpl.h(11.94 KB)
📄 MD5.h(3.39 KB)
📄 MSVCErrorWorkarounds.h(2.62 KB)
📄 MachineValueType.h(42.37 KB)
📄 ManagedStatic.h(4.21 KB)
📄 MathExtras.h(32.81 KB)
📄 MemAlloc.h(3.21 KB)
📄 Memory.h(6.94 KB)
📄 MemoryBuffer.h(10.98 KB)
📄 MipsABIFlags.h(3.92 KB)
📄 Mutex.h(2.14 KB)
📄 NativeFormatting.h(1.64 KB)
📄 OnDiskHashTable.h(21.97 KB)
📄 OptimizedStructLayout.h(5.89 KB)
📄 Parallel.h(5.99 KB)
📄 Path.h(15.6 KB)
📄 PluginLoader.h(1.29 KB)
📄 PointerLikeTypeTraits.h(5.69 KB)
📄 PrettyStackTrace.h(4.45 KB)
📄 Printable.h(1.5 KB)
📄 Process.h(9.31 KB)
📄 Program.h(10.35 KB)
📄 RISCVAttributeParser.h(1.15 KB)
📄 RISCVAttributes.h(1.2 KB)
📄 RISCVTargetParser.def(446 B)
📄 RWMutex.h(5.65 KB)
📄 RandomNumberGenerator.h(2.29 KB)
📄 Recycler.h(3.47 KB)
📄 RecyclingAllocator.h(2.38 KB)
📄 Regex.h(4.37 KB)
📄 Registry.h(5.14 KB)
📄 ReverseIteration.h(360 B)
📄 SHA1.h(2.37 KB)
📄 SMLoc.h(1.78 KB)
📄 SMTAPI.h(16.33 KB)
📄 SaveAndRestore.h(1.02 KB)
📄 ScaledNumber.h(30.65 KB)
📄 ScopedPrinter.h(11.39 KB)
📄 Signals.h(5.22 KB)
📄 Signposts.h(1.29 KB)
📄 SmallVectorMemoryBuffer.h(2.28 KB)
📁 Solaris
📄 SourceMgr.h(10.37 KB)
📄 SpecialCaseList.h(6.01 KB)
📄 StringSaver.h(1.94 KB)
📄 SuffixTree.h(13.15 KB)
📄 SwapByteOrder.h(4.8 KB)
📄 SymbolRemappingReader.h(4.36 KB)
📄 SystemUtils.h(1.02 KB)
📄 TarWriter.h(941 B)
📄 TargetOpcodes.def(22.01 KB)
📄 TargetParser.h(4.08 KB)
📄 TargetRegistry.h(46.87 KB)
📄 TargetSelect.h(6.2 KB)
📄 TaskQueue.h(4.24 KB)
📄 ThreadLocal.h(2.08 KB)
📄 ThreadPool.h(3.44 KB)
📄 Threading.h(10.62 KB)
📄 TimeProfiler.h(3.46 KB)
📄 Timer.h(8.93 KB)
📄 ToolOutputFile.h(2.24 KB)
📄 TrailingObjects.h(15.19 KB)
📄 TrigramIndex.h(2.84 KB)
📄 TypeName.h(2.13 KB)
📄 TypeSize.h(8.53 KB)
📄 Unicode.h(2.5 KB)
📄 UnicodeCharRanges.h(3.27 KB)
📄 Valgrind.h(1.16 KB)
📄 VersionTuple.h(5.22 KB)
📄 VirtualFileSystem.h(28.28 KB)
📄 Watchdog.h(1.15 KB)
📄 Win64EH.h(4.82 KB)
📁 Windows
📄 WindowsError.h(541 B)
📄 WithColor.h(4.64 KB)
📄 X86DisassemblerDecoderCommon.h(29.39 KB)
📄 X86TargetParser.def(8.21 KB)
📄 X86TargetParser.h(3.57 KB)
📄 YAMLParser.h(16.29 KB)
📄 YAMLTraits.h(67.62 KB)
📄 circular_raw_ostream.h(4.97 KB)
📄 raw_os_ostream.h(1.29 KB)
📄 raw_ostream.h(20.82 KB)
📄 raw_sha1_ostream.h(1.29 KB)
📄 thread.h(1.33 KB)
📄 type_traits.h(6.75 KB)
📄 xxhash.h(1.92 KB)

Editing: LowLevelTypeImpl.h

//== llvm/Support/LowLevelTypeImpl.h --------------------------- -*- C++ -*-==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// Implement a low-level type suitable for MachineInstr level instruction
/// selection.
///
/// For a type attached to a MachineInstr, we only care about 2 details: total
/// size and the number of vector lanes (if any). Accordingly, there are 4
/// possible valid type-kinds:
///
///    * `sN` for scalars and aggregates
///    * `<N x sM>` for vectors, which must have at least 2 elements.
///    * `pN` for pointers
///
/// Other information required for correct selection is expected to be carried
/// by the opcode, or non-type flags. For example the distinction between G_ADD
/// and G_FADD for int/float or fast-math flags.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_LOWLEVELTYPEIMPL_H
#define LLVM_SUPPORT_LOWLEVELTYPEIMPL_H

#include "llvm/ADT/DenseMapInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MachineValueType.h"
#include <cassert>

namespace llvm {

class DataLayout;
class Type;
class raw_ostream;

class LLT {
public:
  /// Get a low-level scalar or aggregate "bag of bits".
  static LLT scalar(unsigned SizeInBits) {
    assert(SizeInBits > 0 && "invalid scalar size");
    return LLT{/*isPointer=*/false, /*isVector=*/false, /*NumElements=*/0,
               SizeInBits, /*AddressSpace=*/0};
  }

/// Get a low-level pointer in the given address space.
  static LLT pointer(unsigned AddressSpace, unsigned SizeInBits) {
    assert(SizeInBits > 0 && "invalid pointer size");
    return LLT{/*isPointer=*/true, /*isVector=*/false, /*NumElements=*/0,
               SizeInBits, AddressSpace};
  }

/// Get a low-level vector of some number of elements and element width.
  /// \p NumElements must be at least 2.
  static LLT vector(uint16_t NumElements, unsigned ScalarSizeInBits) {
    assert(NumElements > 1 && "invalid number of vector elements");
    assert(ScalarSizeInBits > 0 && "invalid vector element size");
    return LLT{/*isPointer=*/false, /*isVector=*/true, NumElements,
               ScalarSizeInBits, /*AddressSpace=*/0};
  }

/// Get a low-level vector of some number of elements and element type.
  static LLT vector(uint16_t NumElements, LLT ScalarTy) {
    assert(NumElements > 1 && "invalid number of vector elements");
    assert(!ScalarTy.isVector() && "invalid vector element type");
    return LLT{ScalarTy.isPointer(), /*isVector=*/true, NumElements,
               ScalarTy.getSizeInBits(),
               ScalarTy.isPointer() ? ScalarTy.getAddressSpace() : 0};
  }

static LLT scalarOrVector(uint16_t NumElements, LLT ScalarTy) {
    return NumElements == 1 ? ScalarTy : LLT::vector(NumElements, ScalarTy);
  }

static LLT scalarOrVector(uint16_t NumElements, unsigned ScalarSize) {
    return scalarOrVector(NumElements, LLT::scalar(ScalarSize));
  }

explicit LLT(bool isPointer, bool isVector, uint16_t NumElements,
               unsigned SizeInBits, unsigned AddressSpace) {
    init(isPointer, isVector, NumElements, SizeInBits, AddressSpace);
  }
  explicit LLT() : IsPointer(false), IsVector(false), RawData(0) {}

explicit LLT(MVT VT);

bool isValid() const { return RawData != 0; }

bool isScalar() const { return isValid() && !IsPointer && !IsVector; }

bool isPointer() const { return isValid() && IsPointer && !IsVector; }

bool isVector() const { return isValid() && IsVector; }

/// Returns the number of elements in a vector LLT. Must only be called on
  /// vector types.
  uint16_t getNumElements() const {
    assert(IsVector && "cannot get number of elements on scalar/aggregate");
    if (!IsPointer)
      return getFieldValue(VectorElementsFieldInfo);
    else
      return getFieldValue(PointerVectorElementsFieldInfo);
  }

/// Returns the total size of the type. Must only be called on sized types.
  unsigned getSizeInBits() const {
    if (isPointer() || isScalar())
      return getScalarSizeInBits();
    return getScalarSizeInBits() * getNumElements();
  }

/// Returns the total size of the type in bytes, i.e. number of whole bytes
  /// needed to represent the size in bits. Must only be called on sized types.
  unsigned getSizeInBytes() const {
    return (getSizeInBits() + 7) / 8;
  }

LLT getScalarType() const {
    return isVector() ? getElementType() : *this;
  }

/// If this type is a vector, return a vector with the same number of elements
  /// but the new element type. Otherwise, return the new element type.
  LLT changeElementType(LLT NewEltTy) const {
    return isVector() ? LLT::vector(getNumElements(), NewEltTy) : NewEltTy;
  }

/// If this type is a vector, return a vector with the same number of elements
  /// but the new element size. Otherwise, return the new element type. Invalid
  /// for pointer types. For pointer types, use changeElementType.
  LLT changeElementSize(unsigned NewEltSize) const {
    assert(!getScalarType().isPointer() &&
           "invalid to directly change element size for pointers");
    return isVector() ? LLT::vector(getNumElements(), NewEltSize)
                      : LLT::scalar(NewEltSize);
  }

/// Return a vector or scalar with the same element type and the new number of
  /// elements.
  LLT changeNumElements(unsigned NewNumElts) const {
    return LLT::scalarOrVector(NewNumElts, getScalarType());
  }

/// Return a type that is \p Factor times smaller. Reduces the number of
  /// elements if this is a vector, or the bitwidth for scalar/pointers. Does
  /// not attempt to handle cases that aren't evenly divisible.
  LLT divide(int Factor) const {
    assert(Factor != 1);
    if (isVector()) {
      assert(getNumElements() % Factor == 0);
      return scalarOrVector(getNumElements() / Factor, getElementType());
    }

assert(getSizeInBits() % Factor == 0);
    return scalar(getSizeInBits() / Factor);
  }

bool isByteSized() const { return (getSizeInBits() & 7) == 0; }

unsigned getScalarSizeInBits() const {
    assert(RawData != 0 && "Invalid Type");
    if (!IsVector) {
      if (!IsPointer)
        return getFieldValue(ScalarSizeFieldInfo);
      else
        return getFieldValue(PointerSizeFieldInfo);
    } else {
      if (!IsPointer)
        return getFieldValue(VectorSizeFieldInfo);
      else
        return getFieldValue(PointerVectorSizeFieldInfo);
    }
  }

unsigned getAddressSpace() const {
    assert(RawData != 0 && "Invalid Type");
    assert(IsPointer && "cannot get address space of non-pointer type");
    if (!IsVector)
      return getFieldValue(PointerAddressSpaceFieldInfo);
    else
      return getFieldValue(PointerVectorAddressSpaceFieldInfo);
  }

/// Returns the vector's element type. Only valid for vector types.
  LLT getElementType() const {
    assert(isVector() && "cannot get element type of scalar/aggregate");
    if (IsPointer)
      return pointer(getAddressSpace(), getScalarSizeInBits());
    else
      return scalar(getScalarSizeInBits());
  }

void print(raw_ostream &OS) const;

#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  LLVM_DUMP_METHOD void dump() const {
    print(dbgs());
    dbgs() << '\n';
  }
#endif

bool operator==(const LLT &RHS) const {
    return IsPointer == RHS.IsPointer && IsVector == RHS.IsVector &&
           RHS.RawData == RawData;
  }

bool operator!=(const LLT &RHS) const { return !(*this == RHS); }

friend struct DenseMapInfo<LLT>;
  friend class GISelInstProfileBuilder;

private:
  /// LLT is packed into 64 bits as follows:
  /// isPointer : 1
  /// isVector  : 1
  /// with 62 bits remaining for Kind-specific data, packed in bitfields
  /// as described below. As there isn't a simple portable way to pack bits
  /// into bitfields, here the different fields in the packed structure is
  /// described in static const *Field variables. Each of these variables
  /// is a 2-element array, with the first element describing the bitfield size
  /// and the second element describing the bitfield offset.
  typedef int BitFieldInfo[2];
  ///
  /// This is how the bitfields are packed per Kind:
  /// * Invalid:
  ///   gets encoded as RawData == 0, as that is an invalid encoding, since for
  ///   valid encodings, SizeInBits/SizeOfElement must be larger than 0.
  /// * Non-pointer scalar (isPointer == 0 && isVector == 0):
  ///   SizeInBits: 32;
  static const constexpr BitFieldInfo ScalarSizeFieldInfo{32, 0};
  /// * Pointer (isPointer == 1 && isVector == 0):
  ///   SizeInBits: 16;
  ///   AddressSpace: 24;
  static const constexpr BitFieldInfo PointerSizeFieldInfo{16, 0};
  static const constexpr BitFieldInfo PointerAddressSpaceFieldInfo{
      24, PointerSizeFieldInfo[0] + PointerSizeFieldInfo[1]};
  /// * Vector-of-non-pointer (isPointer == 0 && isVector == 1):
  ///   NumElements: 16;
  ///   SizeOfElement: 32;
  static const constexpr BitFieldInfo VectorElementsFieldInfo{16, 0};
  static const constexpr BitFieldInfo VectorSizeFieldInfo{
      32, VectorElementsFieldInfo[0] + VectorElementsFieldInfo[1]};
  /// * Vector-of-pointer (isPointer == 1 && isVector == 1):
  ///   NumElements: 16;
  ///   SizeOfElement: 16;
  ///   AddressSpace: 24;
  static const constexpr BitFieldInfo PointerVectorElementsFieldInfo{16, 0};
  static const constexpr BitFieldInfo PointerVectorSizeFieldInfo{
      16,
      PointerVectorElementsFieldInfo[1] + PointerVectorElementsFieldInfo[0]};
  static const constexpr BitFieldInfo PointerVectorAddressSpaceFieldInfo{
      24, PointerVectorSizeFieldInfo[1] + PointerVectorSizeFieldInfo[0]};

uint64_t IsPointer : 1;
  uint64_t IsVector : 1;
  uint64_t RawData : 62;

static uint64_t getMask(const BitFieldInfo FieldInfo) {
    const int FieldSizeInBits = FieldInfo[0];
    return (((uint64_t)1) << FieldSizeInBits) - 1;
  }
  static uint64_t maskAndShift(uint64_t Val, uint64_t Mask, uint8_t Shift) {
    assert(Val <= Mask && "Value too large for field");
    return (Val & Mask) << Shift;
  }
  static uint64_t maskAndShift(uint64_t Val, const BitFieldInfo FieldInfo) {
    return maskAndShift(Val, getMask(FieldInfo), FieldInfo[1]);
  }
  uint64_t getFieldValue(const BitFieldInfo FieldInfo) const {
    return getMask(FieldInfo) & (RawData >> FieldInfo[1]);
  }

void init(bool IsPointer, bool IsVector, uint16_t NumElements,
            unsigned SizeInBits, unsigned AddressSpace) {
    this->IsPointer = IsPointer;
    this->IsVector = IsVector;
    if (!IsVector) {
      if (!IsPointer)
        RawData = maskAndShift(SizeInBits, ScalarSizeFieldInfo);
      else
        RawData = maskAndShift(SizeInBits, PointerSizeFieldInfo) |
                  maskAndShift(AddressSpace, PointerAddressSpaceFieldInfo);
    } else {
      assert(NumElements > 1 && "invalid number of vector elements");
      if (!IsPointer)
        RawData = maskAndShift(NumElements, VectorElementsFieldInfo) |
                  maskAndShift(SizeInBits, VectorSizeFieldInfo);
      else
        RawData =
            maskAndShift(NumElements, PointerVectorElementsFieldInfo) |
            maskAndShift(SizeInBits, PointerVectorSizeFieldInfo) |
            maskAndShift(AddressSpace, PointerVectorAddressSpaceFieldInfo);
    }
  }

uint64_t getUniqueRAWLLTData() const {
    return ((uint64_t)RawData) << 2 | ((uint64_t)IsPointer) << 1 |
           ((uint64_t)IsVector);
  }
};

inline raw_ostream& operator<<(raw_ostream &OS, const LLT &Ty) {
  Ty.print(OS);
  return OS;
}

template<> struct DenseMapInfo<LLT> {
  static inline LLT getEmptyKey() {
    LLT Invalid;
    Invalid.IsPointer = true;
    return Invalid;
  }
  static inline LLT getTombstoneKey() {
    LLT Invalid;
    Invalid.IsVector = true;
    return Invalid;
  }
  static inline unsigned getHashValue(const LLT &Ty) {
    uint64_t Val = Ty.getUniqueRAWLLTData();
    return DenseMapInfo<uint64_t>::getHashValue(Val);
  }
  static bool isEqual(const LLT &LHS, const LLT &RHS) {
    return LHS == RHS;
  }
};

}

#endif // LLVM_SUPPORT_LOWLEVELTYPEIMPL_H

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