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📄 APFloat.h(48.83 KB)
📄 APInt.h(74.48 KB)
📄 APSInt.h(11.75 KB)
📄 AllocatorList.h(7.53 KB)
📄 Any.h(5.05 KB)
📄 ArrayRef.h(17.92 KB)
📄 BitVector.h(29.74 KB)
📄 Bitfields.h(11.65 KB)
📄 BitmaskEnum.h(5.53 KB)
📄 BreadthFirstIterator.h(4.82 KB)
📄 CachedHashString.h(5.9 KB)
📄 CoalescingBitVector.h(14.91 KB)
📄 DAGDeltaAlgorithm.h(3.13 KB)
📄 DeltaAlgorithm.h(3.54 KB)
📄 DenseMap.h(43.14 KB)
📄 DenseMapInfo.h(11.4 KB)
📄 DenseSet.h(9.33 KB)
📄 DepthFirstIterator.h(10.37 KB)
📄 DirectedGraph.h(9.56 KB)
📄 EnumeratedArray.h(1.6 KB)
📄 EpochTracker.h(3.2 KB)
📄 EquivalenceClasses.h(10.52 KB)
📄 FloatingPointMode.h(5.62 KB)
📄 FoldingSet.h(30.16 KB)
📄 FunctionExtras.h(14.55 KB)
📄 GraphTraits.h(5.71 KB)
📄 Hashing.h(25.12 KB)
📄 ImmutableList.h(7.57 KB)
📄 ImmutableMap.h(10.84 KB)
📄 ImmutableSet.h(37.52 KB)
📄 IndexedMap.h(2.5 KB)
📄 IntEqClasses.h(2.87 KB)
📄 IntervalMap.h(72.88 KB)
📄 IntrusiveRefCntPtr.h(8.1 KB)
📄 MapVector.h(7.79 KB)
📄 None.h(983 B)
📄 Optional.h(10.82 KB)
📄 PackedVector.h(4.17 KB)
📄 PointerEmbeddedInt.h(4.05 KB)
📄 PointerIntPair.h(8.72 KB)
📄 PointerSumType.h(11.61 KB)
📄 PointerUnion.h(10.17 KB)
📄 PostOrderIterator.h(11.05 KB)
📄 PriorityQueue.h(2.69 KB)
📄 PriorityWorklist.h(8.11 KB)
📄 SCCIterator.h(8.02 KB)
📄 STLExtras.h(70.56 KB)
📄 ScopeExit.h(1.83 KB)
📄 ScopedHashTable.h(8.27 KB)
📄 Sequence.h(2.59 KB)
📄 SetOperations.h(2.58 KB)
📄 SetVector.h(9.39 KB)
📄 SmallBitVector.h(20.36 KB)
📄 SmallPtrSet.h(16.93 KB)
📄 SmallSet.h(8.37 KB)
📄 SmallString.h(8.55 KB)
📄 SmallVector.h(32.33 KB)
📄 SparseBitVector.h(26.2 KB)
📄 SparseMultiSet.h(17.83 KB)
📄 SparseSet.h(11.41 KB)
📄 Statistic.h(7.01 KB)
📄 StringExtras.h(13.25 KB)
📄 StringMap.h(15.7 KB)
📄 StringMapEntry.h(4.83 KB)
📄 StringRef.h(31.68 KB)
📄 StringSet.h(1.51 KB)
📄 StringSwitch.h(6.25 KB)
📄 TinyPtrVector.h(10.19 KB)
📄 Triple.h(27.4 KB)
📄 Twine.h(17.48 KB)
📄 TypeSwitch.h(5.82 KB)
📄 UniqueVector.h(3.09 KB)
📄 Waymarking.h(11.96 KB)
📄 bit.h(2.26 KB)
📄 edit_distance.h(3.57 KB)
📄 fallible_iterator.h(8.31 KB)
📄 ilist.h(13.68 KB)
📄 ilist_base.h(2.72 KB)
📄 ilist_iterator.h(7.21 KB)
📄 ilist_node.h(9.84 KB)
📄 ilist_node_base.h(1.7 KB)
📄 ilist_node_options.h(5.07 KB)
📄 iterator.h(13.46 KB)
📄 iterator_range.h(2.22 KB)
📄 simple_ilist.h(10.78 KB)

Editing: bit.h

//===-- llvm/ADT/bit.h - C++20 <bit> ----------------------------*- 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 implements the C++20 <bit> header.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ADT_BIT_H
#define LLVM_ADT_BIT_H

#include "llvm/Support/Compiler.h"
#include <cstring>
#include <type_traits>

namespace llvm {

// This implementation of bit_cast is different from the C++17 one in two ways:
//  - It isn't constexpr because that requires compiler support.
//  - It requires trivially-constructible To, to avoid UB in the implementation.
template <
    typename To, typename From,
    typename = std::enable_if_t<sizeof(To) == sizeof(From)>
#if (__has_feature(is_trivially_constructible) && defined(_LIBCPP_VERSION)) || \
    (defined(__GNUC__) && __GNUC__ >= 5)
    ,
    typename = std::enable_if_t<std::is_trivially_constructible<To>::value>
#elif __has_feature(is_trivially_constructible)
    ,
    typename = std::enable_if_t<__is_trivially_constructible(To)>
#else
  // See comment below.
#endif
#if (__has_feature(is_trivially_copyable) && defined(_LIBCPP_VERSION)) || \
    (defined(__GNUC__) && __GNUC__ >= 5)
    ,
    typename = std::enable_if_t<std::is_trivially_copyable<To>::value>,
    typename = std::enable_if_t<std::is_trivially_copyable<From>::value>
#elif __has_feature(is_trivially_copyable)
    ,
    typename = std::enable_if_t<__is_trivially_copyable(To)>,
    typename = std::enable_if_t<__is_trivially_copyable(From)>
#else
// This case is GCC 4.x. clang with libc++ or libstdc++ never get here. Unlike
// llvm/Support/type_traits.h's is_trivially_copyable we don't want to
// provide a good-enough answer here: developers in that configuration will hit
// compilation failures on the bots instead of locally. That's acceptable
// because it's very few developers, and only until we move past C++11.
#endif
    >
inline To bit_cast(const From &from) noexcept {
  To to;
  std::memcpy(&to, &from, sizeof(To));
  return to;
}

} // namespace llvm

#endif

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Editing: bit.h

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