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AMDGPUAddrSpace.h	2.99 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
AMDGPUMetadata.h	18.56 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
AMDHSAKernelDescriptor.h	13.05 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ARMAttributeParser.h	3.37 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ARMBuildAttributes.h	9.08 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ARMEHABI.h	3.84 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ARMWinEH.h	21.58 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
AlignOf.h	1.17 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Alignment.h	11.64 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Allocator.h	17.15 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
AllocatorBase.h	4.58 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ArrayRecycler.h	4.78 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Atomic.h	1.09 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
AtomicOrdering.h	6.53 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
AutoConvert.h	1.72 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Automaton.h	9.6 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BCD.h	1.85 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BLAKE3.h	4.42 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BalancedPartitioning.h	8.02 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Base64.h	1.99 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryByteStream.h	8.98 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryItemStream.h	3.56 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryStream.h	3.71 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryStreamArray.h	12.48 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryStreamError.h	1.29 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryStreamReader.h	10.76 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryStreamRef.h	10.02 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BinaryStreamWriter.h	7.61 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BlockFrequency.h	3.57 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BranchProbability.h	7.92 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
BuryPointer.h	1.03 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CBindingWrapping.h	1.86 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CFGDiff.h	6.35 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CFGUpdate.h	4.12 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
COM.h	1004 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CRC.h	1.63 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CSKYAttributeParser.h	1.34 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CSKYAttributes.h	2.28 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CachePruning.h	3.87 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Caching.h	3.44 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Capacity.h	972 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Casting.h	31.95 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CheckedArithmetic.h	3.94 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Chrono.h	6.73 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CodeGen.h	3.95 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CodeGenCoverage.h	1.16 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CommandLine.h	75.71 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Compiler.h	20.71 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Compression.h	4.22 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ConvertEBCDIC.h	936 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ConvertUTF.h	13.34 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
CrashRecoveryContext.h	9.47 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DJB.h	1.05 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DOTGraphTraits.h	5.86 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DXILABI.h	2.27 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DataExtractor.h	30.41 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DataTypes.h	878 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Debug.h	4.3 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DebugCounter.h	6.92 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Discriminator.h	4.27 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DivisionByConstantInfo.h	1.34 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Duration.h	854 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
DynamicLibrary.h	6.66 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ELFAttributeParser.h	2.36 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ELFAttributes.h	1.05 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Endian.h	17.18 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
EndianStream.h	2.49 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Errc.h	4 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Errno.h	1.42 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Error.h	47.5 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ErrorHandling.h	7.05 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ErrorOr.h	7.43 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ExitCodes.h	1.19 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ExponentialBackoff.h	2.07 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ExtensibleRTTI.h	3.98 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Extension.def	45 B	-rw-r--r--	2025-04-30 01:50:08	Edit Del
FileCollector.h	4.68 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FileOutputBuffer.h	3.37 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FileSystem	-	drwxr-xr-x	2025-05-28 10:12:49	Del
FileSystem.h	57.86 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FileUtilities.h	3.55 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Format.h	9.53 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FormatAdapters.h	3.57 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FormatCommon.h	2.07 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FormatProviders.h	15.43 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FormatVariadic.h	9.92 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FormatVariadicDetails.h	5.39 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
FormattedStream.h	7.34 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GenericDomTree.h	33.28 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GenericDomTreeConstruction.h	60.8 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GenericIteratedDominanceFrontier.h	7.38 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GenericLoopInfo.h	26.54 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GenericLoopInfoImpl.h	28.37 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GlobPattern.h	3.41 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
GraphWriter.h	13.27 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
HashBuilder.h	14.14 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
HexagonAttributeParser.h	1.14 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
HexagonAttributes.h	769 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
InitLLVM.h	1.83 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
InstructionCost.h	8.42 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
JSON.h	37.03 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
KnownBits.h	18.19 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LEB128.h	6.83 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LICENSE.TXT	303 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LLVMDriver.h	912 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LineIterator.h	3 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Locale.h	223 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LockFileManager.h	3.13 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
LogicalResult.h	5.19 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MD5.h	3.47 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MSP430AttributeParser.h	1.52 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MSP430Attributes.h	1.27 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MSVCErrorWorkarounds.h	2.62 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ManagedStatic.h	4.21 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MathExtras.h	28.57 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MemAlloc.h	3.21 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Memory.h	7.04 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MemoryBuffer.h	11.56 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MemoryBufferRef.h	1.78 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
MipsABIFlags.h	3.92 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ModRef.h	8.79 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Mutex.h	2.08 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
NativeFormatting.h	1.65 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
OnDiskHashTable.h	22.08 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
OptimizedStructLayout.h	5.9 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
PGOOptions.h	1.84 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Parallel.h	9.92 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Path.h	17.81 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
PerThreadBumpPtrAllocator.h	3.79 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
PluginLoader.h	1.34 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
PointerLikeTypeTraits.h	5.69 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
PrettyStackTrace.h	4.45 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Printable.h	1.53 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Process.h	9.43 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Program.h	11.28 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
RISCVAttributeParser.h	1.19 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
RISCVAttributes.h	1.43 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
RISCVISAUtils.h	1.38 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
RWMutex.h	5.67 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
RandomNumberGenerator.h	2.29 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Recycler.h	3.47 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
RecyclingAllocator.h	2.38 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Regex.h	4.39 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Registry.h	5.14 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ReverseIteration.h	378 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SHA1.h	2.32 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SHA256.h	2.5 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SMLoc.h	1.83 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SMTAPI.h	16.88 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SaveAndRestore.h	1.38 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ScaledNumber.h	30.67 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ScopedPrinter.h	25.67 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Signals.h	5.49 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Signposts.h	1.37 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SipHash.h	1.96 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SmallVectorMemoryBuffer.h	2.17 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Solaris	-	drwxr-xr-x	2025-04-30 02:13:26	Del
SourceMgr.h	11.97 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SpecialCaseList.h	5.92 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
StringSaver.h	1.94 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SuffixTree.h	8.46 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SuffixTreeNode.h	7.53 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SwapByteOrder.h	2.46 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SystemUtils.h	1.02 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
SystemZ	-	drwxr-xr-x	2025-05-28 10:12:49	Del
TarWriter.h	939 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TargetOpcodes.def	28.78 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TargetSelect.h	6.7 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ThreadPool.h	11.11 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ThreadSafeAllocator.h	1.98 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Threading.h	10.03 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TimeProfiler.h	7.53 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Timer.h	9.17 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
ToolOutputFile.h	2.46 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TrailingObjects.h	14.89 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TypeName.h	2.15 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
TypeSize.h	15.69 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Unicode.h	3.06 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
UnicodeCharRanges.h	3.27 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
VCSRevision.h	44 B	-rw-r--r--	2025-04-30 01:50:15	Edit Del
Valgrind.h	1.16 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
VersionTuple.h	7.04 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
VirtualFileSystem.h	42.25 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Watchdog.h	1.15 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Win64EH.h	6.51 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
Windows	-	drwxr-xr-x	2025-05-28 10:12:49	Del
WindowsError.h	580 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
WithColor.h	5.08 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
X86DisassemblerDecoderCommon.h	32.59 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
X86FoldTablesUtils.h	1.88 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
YAMLParser.h	16.88 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
YAMLTraits.h	71.86 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
circular_raw_ostream.h	4.93 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
float128.h	953 B	-rw-r--r--	2025-01-14 09:41:02	Edit Del
raw_os_ostream.h	1.29 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
raw_ostream.h	27.8 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
raw_sha1_ostream.h	1.31 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
raw_socket_stream.h	5.47 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
thread.h	6.85 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
type_traits.h	3.14 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del
xxhash.h	2.76 KB	-rw-r--r--	2025-01-14 09:41:02	Edit Del

Editing: PointerLikeTypeTraits.h (5.69 KB)

//===- llvm/Support/PointerLikeTypeTraits.h - Pointer Traits ----*- 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the PointerLikeTypeTraits class.  This allows data
// structures to reason about pointers and other things that are pointer sized.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
#define LLVM_SUPPORT_POINTERLIKETYPETRAITS_H

#include "llvm/Support/DataTypes.h"
#include <cassert>
#include <type_traits>

namespace llvm {

/// A traits type that is used to handle pointer types and things that are just
/// wrappers for pointers as a uniform entity.
template <typename T> struct PointerLikeTypeTraits;

namespace detail {
/// A tiny meta function to compute the log2 of a compile time constant.
template <size_t N>
struct ConstantLog2
    : std::integral_constant<size_t, ConstantLog2<N / 2>::value + 1> {};
template <> struct ConstantLog2<1> : std::integral_constant<size_t, 0> {};

// Provide a trait to check if T is pointer-like.
template <typename T, typename U = void> struct HasPointerLikeTypeTraits {
  static const bool value = false;
};

// sizeof(T) is valid only for a complete T.
template <typename T>
struct HasPointerLikeTypeTraits<
    T, decltype((sizeof(PointerLikeTypeTraits<T>) + sizeof(T)), void())> {
  static const bool value = true;
};

template <typename T> struct IsPointerLike {
  static const bool value = HasPointerLikeTypeTraits<T>::value;
};

template <typename T> struct IsPointerLike<T *> {
  static const bool value = true;
};
} // namespace detail

// Provide PointerLikeTypeTraits for non-cvr pointers.
template <typename T> struct PointerLikeTypeTraits<T *> {
  static inline void *getAsVoidPointer(T *P) { return P; }
  static inline T *getFromVoidPointer(void *P) { return static_cast<T *>(P); }

  static constexpr int NumLowBitsAvailable =
      detail::ConstantLog2<alignof(T)>::value;
};

template <> struct PointerLikeTypeTraits<void *> {
  static inline void *getAsVoidPointer(void *P) { return P; }
  static inline void *getFromVoidPointer(void *P) { return P; }

  /// Note, we assume here that void* is related to raw malloc'ed memory and
  /// that malloc returns objects at least 4-byte aligned. However, this may be
  /// wrong, or pointers may be from something other than malloc. In this case,
  /// you should specify a real typed pointer or avoid this template.
  ///
  /// All clients should use assertions to do a run-time check to ensure that
  /// this is actually true.
  static constexpr int NumLowBitsAvailable = 2;
};

// Provide PointerLikeTypeTraits for const things.
template <typename T> struct PointerLikeTypeTraits<const T> {
  typedef PointerLikeTypeTraits<T> NonConst;

  static inline const void *getAsVoidPointer(const T P) {
    return NonConst::getAsVoidPointer(P);
  }
  static inline const T getFromVoidPointer(const void *P) {
    return NonConst::getFromVoidPointer(const_cast<void *>(P));
  }
  static constexpr int NumLowBitsAvailable = NonConst::NumLowBitsAvailable;
};

// Provide PointerLikeTypeTraits for const pointers.
template <typename T> struct PointerLikeTypeTraits<const T *> {
  typedef PointerLikeTypeTraits<T *> NonConst;

  static inline const void *getAsVoidPointer(const T *P) {
    return NonConst::getAsVoidPointer(const_cast<T *>(P));
  }
  static inline const T *getFromVoidPointer(const void *P) {
    return NonConst::getFromVoidPointer(const_cast<void *>(P));
  }
  static constexpr int NumLowBitsAvailable = NonConst::NumLowBitsAvailable;
};

// Provide PointerLikeTypeTraits for uintptr_t.
template <> struct PointerLikeTypeTraits<uintptr_t> {
  static inline void *getAsVoidPointer(uintptr_t P) {
    return reinterpret_cast<void *>(P);
  }
  static inline uintptr_t getFromVoidPointer(void *P) {
    return reinterpret_cast<uintptr_t>(P);
  }
  // No bits are available!
  static constexpr int NumLowBitsAvailable = 0;
};

/// Provide suitable custom traits struct for function pointers.
///
/// Function pointers can't be directly given these traits as functions can't
/// have their alignment computed with `alignof` and we need different casting.
///
/// To rely on higher alignment for a specialized use, you can provide a
/// customized form of this template explicitly with higher alignment, and
/// potentially use alignment attributes on functions to satisfy that.
template <int Alignment, typename FunctionPointerT>
struct FunctionPointerLikeTypeTraits {
  static constexpr int NumLowBitsAvailable =
      detail::ConstantLog2<Alignment>::value;
  static inline void *getAsVoidPointer(FunctionPointerT P) {
    assert((reinterpret_cast<uintptr_t>(P) &
            ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 &&
           "Alignment not satisfied for an actual function pointer!");
    return reinterpret_cast<void *>(P);
  }
  static inline FunctionPointerT getFromVoidPointer(void *P) {
    return reinterpret_cast<FunctionPointerT>(P);
  }
};

/// Provide a default specialization for function pointers that assumes 4-byte
/// alignment.
///
/// We assume here that functions used with this are always at least 4-byte
/// aligned. This means that, for example, thumb functions won't work or systems
/// with weird unaligned function pointers won't work. But all practical systems
/// we support satisfy this requirement.
template <typename ReturnT, typename... ParamTs>
struct PointerLikeTypeTraits<ReturnT (*)(ParamTs...)>
    : FunctionPointerLikeTypeTraits<4, ReturnT (*)(ParamTs...)> {};

} // end namespace llvm

#endif