Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

14 files changed, 0 insertions, 587 deletions

diff --git a/third_party/libcxx/include/c++/v1/__bit/bit_cast.h b/third_party/libcxx/include/c++/v1/__bit/bit_cast.h
deleted file mode 100644
index 7350250..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/bit_cast.h
+++ /dev/null
@@ -1,44 +0,0 @@
-// -*- 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BIT_CAST_H
-#define _LIBCPP___BIT_BIT_CAST_H
-
-#include <__config>
-#include <__type_traits/is_trivially_copyable.h>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-#ifndef _LIBCPP_CXX03_LANG
-
-template <class _ToType, class _FromType>
-[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI constexpr _ToType __bit_cast(const _FromType& __from) noexcept {
-  return __builtin_bit_cast(_ToType, __from);
-}
-
-#endif // _LIBCPP_CXX03_LANG
-
-#if _LIBCPP_STD_VER >= 20
-
-template <class _ToType, class _FromType>
-  requires(sizeof(_ToType) == sizeof(_FromType) && is_trivially_copyable_v<_ToType> &&
-           is_trivially_copyable_v<_FromType>)
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _ToType bit_cast(const _FromType& __from) noexcept {
-  return __builtin_bit_cast(_ToType, __from);
-}
-
-#endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_BIT_CAST_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/bit_ceil.h b/third_party/libcxx/include/c++/v1/__bit/bit_ceil.h
deleted file mode 100644
index 99881a8..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/bit_ceil.h
+++ /dev/null
@@ -1,54 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BIT_CEIL_H
-#define _LIBCPP___BIT_BIT_CEIL_H
-
-#include <__assert>
-#include <__bit/countl.h>
-#include <__config>
-#include <__type_traits/integer_traits.h>
-#include <limits>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-#if _LIBCPP_STD_VER >= 17
-
-template <class _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp __bit_ceil(_Tp __t) noexcept {
-  if (__t < 2)
-    return 1;
-  const unsigned __n = numeric_limits<_Tp>::digits - std::__countl_zero((_Tp)(__t - 1u));
-  _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__n != numeric_limits<_Tp>::digits, "Bad input to bit_ceil");
-
-  if constexpr (sizeof(_Tp) >= sizeof(unsigned))
-    return _Tp{1} << __n;
-  else {
-    const unsigned __extra   = numeric_limits<unsigned>::digits - numeric_limits<_Tp>::digits;
-    const unsigned __ret_val = 1u << (__n + __extra);
-    return (_Tp)(__ret_val >> __extra);
-  }
-}
-
-#  if _LIBCPP_STD_VER >= 20
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp bit_ceil(_Tp __t) noexcept {
-  return std::__bit_ceil(__t);
-}
-
-#  endif // _LIBCPP_STD_VER >= 20
-#endif   // _LIBCPP_STD_VER >= 17
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_BIT_CEIL_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/bit_floor.h b/third_party/libcxx/include/c++/v1/__bit/bit_floor.h
deleted file mode 100644
index 799a064..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/bit_floor.h
+++ /dev/null
@@ -1,33 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BIT_FLOOR_H
-#define _LIBCPP___BIT_BIT_FLOOR_H
-
-#include <__bit/bit_log2.h>
-#include <__config>
-#include <__type_traits/integer_traits.h>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-#if _LIBCPP_STD_VER >= 20
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp bit_floor(_Tp __t) noexcept {
-  return __t == 0 ? 0 : _Tp{1} << std::__bit_log2(__t);
-}
-
-#endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_BIT_FLOOR_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/bit_log2.h b/third_party/libcxx/include/c++/v1/__bit/bit_log2.h
deleted file mode 100644
index 9ceeec1..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/bit_log2.h
+++ /dev/null
@@ -1,33 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BIT_LOG2_H
-#define _LIBCPP___BIT_BIT_LOG2_H
-
-#include <__assert>
-#include <__bit/countl.h>
-#include <__config>
-#include <__type_traits/integer_traits.h>
-#include <limits>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Tp>
-_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp __bit_log2(_Tp __t) _NOEXCEPT {
-  static_assert(__is_unsigned_integer_v<_Tp>, "__bit_log2 requires an unsigned integer type");
-  _LIBCPP_ASSERT_INTERNAL(__t != 0, "logarithm of 0 is undefined");
-  return numeric_limits<_Tp>::digits - 1 - std::__countl_zero(__t);
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_BIT_LOG2_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/bit_width.h b/third_party/libcxx/include/c++/v1/__bit/bit_width.h
deleted file mode 100644
index 75050ac..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/bit_width.h
+++ /dev/null
@@ -1,33 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BIT_WIDTH_H
-#define _LIBCPP___BIT_BIT_WIDTH_H
-
-#include <__bit/bit_log2.h>
-#include <__config>
-#include <__type_traits/integer_traits.h>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-#if _LIBCPP_STD_VER >= 20
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int bit_width(_Tp __t) noexcept {
-  return __t == 0 ? 0 : std::__bit_log2(__t) + 1;
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP_STD_VER >= 20
-
-#endif // _LIBCPP___BIT_BIT_WIDTH_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/blsr.h b/third_party/libcxx/include/c++/v1/__bit/blsr.h
deleted file mode 100644
index 76bd521..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/blsr.h
+++ /dev/null
@@ -1,34 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BLSR_H
-#define _LIBCPP___BIT_BLSR_H
-
-#include <__config>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR unsigned __libcpp_blsr(unsigned __x) _NOEXCEPT {
-  return __x ^ (__x & -__x);
-}
-
-inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR unsigned long __libcpp_blsr(unsigned long __x) _NOEXCEPT {
-  return __x ^ (__x & -__x);
-}
-
-inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR unsigned long long __libcpp_blsr(unsigned long long __x) _NOEXCEPT {
-  return __x ^ (__x & -__x);
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_BLSR_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/byteswap.h b/third_party/libcxx/include/c++/v1/__bit/byteswap.h
deleted file mode 100644
index 7ce7e06..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/byteswap.h
+++ /dev/null
@@ -1,53 +0,0 @@
-// -*- 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_BYTESWAP_H
-#define _LIBCPP___BIT_BYTESWAP_H
-
-#include <__concepts/arithmetic.h>
-#include <__config>
-#include <cstdint>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-#if _LIBCPP_STD_VER >= 23
-
-template <integral _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp byteswap(_Tp __val) noexcept {
-  if constexpr (sizeof(_Tp) == 1) {
-    return __val;
-  } else if constexpr (sizeof(_Tp) == 2) {
-    return __builtin_bswap16(__val);
-  } else if constexpr (sizeof(_Tp) == 4) {
-    return __builtin_bswap32(__val);
-  } else if constexpr (sizeof(_Tp) == 8) {
-    return __builtin_bswap64(__val);
-#  if _LIBCPP_HAS_INT128
-  } else if constexpr (sizeof(_Tp) == 16) {
-#    if __has_builtin(__builtin_bswap128)
-    return __builtin_bswap128(__val);
-#    else
-    return (static_cast<_Tp>(byteswap(static_cast<uint64_t>(__val))) << 64) |
-           static_cast<_Tp>(byteswap(static_cast<uint64_t>(__val >> 64)));
-#    endif // __has_builtin(__builtin_bswap128)
-#  endif   // _LIBCPP_HAS_INT128
-  } else {
-    static_assert(sizeof(_Tp) == 0, "byteswap is unimplemented for integral types of this size");
-  }
-}
-
-#endif // _LIBCPP_STD_VER >= 23
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_BYTESWAP_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/countl.h b/third_party/libcxx/include/c++/v1/__bit/countl.h
deleted file mode 100644
index c95828f..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/countl.h
+++ /dev/null
@@ -1,48 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_COUNTL_H
-#define _LIBCPP___BIT_COUNTL_H
-
-#include <__config>
-#include <__type_traits/integer_traits.h>
-#include <limits>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Tp>
-_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int __countl_zero(_Tp __t) _NOEXCEPT {
-  return __builtin_clzg(__t, numeric_limits<_Tp>::digits);
-}
-
-#if _LIBCPP_STD_VER >= 20
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int countl_zero(_Tp __t) noexcept {
-  return std::__countl_zero(__t);
-}
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int countl_one(_Tp __t) noexcept {
-  return std::countl_zero(static_cast<_Tp>(~__t));
-}
-
-#endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_END_NAMESPACE_STD
-
-_LIBCPP_POP_MACROS
-
-#endif // _LIBCPP___BIT_COUNTL_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/countr.h b/third_party/libcxx/include/c++/v1/__bit/countr.h
deleted file mode 100644
index 16f689d..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/countr.h
+++ /dev/null
@@ -1,48 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_COUNTR_H
-#define _LIBCPP___BIT_COUNTR_H
-
-#include <__config>
-#include <__type_traits/integer_traits.h>
-#include <limits>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Tp>
-[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR int __countr_zero(_Tp __t) _NOEXCEPT {
-  return __builtin_ctzg(__t, numeric_limits<_Tp>::digits);
-}
-
-#if _LIBCPP_STD_VER >= 20
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int countr_zero(_Tp __t) noexcept {
-  return std::__countr_zero(__t);
-}
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int countr_one(_Tp __t) noexcept {
-  return std::countr_zero(static_cast<_Tp>(~__t));
-}
-
-#endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_END_NAMESPACE_STD
-
-_LIBCPP_POP_MACROS
-
-#endif // _LIBCPP___BIT_COUNTR_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/endian.h b/third_party/libcxx/include/c++/v1/__bit/endian.h
deleted file mode 100644
index 2d31e5d..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/endian.h
+++ /dev/null
@@ -1,38 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_ENDIAN_H
-#define _LIBCPP___BIT_ENDIAN_H
-
-#include <__config>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-#if _LIBCPP_STD_VER >= 20
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-enum class endian {
-  little = 0xDEAD,
-  big    = 0xFACE,
-#  if defined(_LIBCPP_LITTLE_ENDIAN)
-  native = little
-#  elif defined(_LIBCPP_BIG_ENDIAN)
-  native = big
-#  else
-  native = 0xCAFE
-#  endif
-};
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP_STD_VER >= 20
-
-#endif // _LIBCPP___BIT_ENDIAN_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/has_single_bit.h b/third_party/libcxx/include/c++/v1/__bit/has_single_bit.h
deleted file mode 100644
index c49c518..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/has_single_bit.h
+++ /dev/null
@@ -1,37 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_HAS_SINGLE_BIT_H
-#define _LIBCPP___BIT_HAS_SINGLE_BIT_H
-
-#include <__config>
-#include <__type_traits/integer_traits.h>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-#if _LIBCPP_STD_VER >= 20
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool has_single_bit(_Tp __t) noexcept {
-  return __builtin_popcountg(__t) == 1;
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_POP_MACROS
-
-#endif // _LIBCPP___BIT_HAS_SINGLE_BIT_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/invert_if.h b/third_party/libcxx/include/c++/v1/__bit/invert_if.h
deleted file mode 100644
index f7606ed..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/invert_if.h
+++ /dev/null
@@ -1,30 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_INVERT_IF_H
-#define _LIBCPP___BIT_INVERT_IF_H
-
-#include <__concepts/arithmetic.h>
-#include <__config>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <bool _Invert, class _Tp>
-_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp __invert_if(_Tp __v) {
-  if (_Invert)
-    return ~__v;
-  return __v;
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_INVERT_IF_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/popcount.h b/third_party/libcxx/include/c++/v1/__bit/popcount.h
deleted file mode 100644
index d104c8e..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/popcount.h
+++ /dev/null
@@ -1,42 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_POPCOUNT_H
-#define _LIBCPP___BIT_POPCOUNT_H
-
-#include <__config>
-#include <__type_traits/integer_traits.h>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Tp>
-[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR int __popcount(_Tp __t) _NOEXCEPT {
-  return __builtin_popcountg(__t);
-}
-
-#if _LIBCPP_STD_VER >= 20
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr int popcount(_Tp __t) noexcept {
-  return std::__popcount(__t);
-}
-
-#endif
-
-_LIBCPP_END_NAMESPACE_STD
-
-_LIBCPP_POP_MACROS
-
-#endif // _LIBCPP___BIT_POPCOUNT_H
diff --git a/third_party/libcxx/include/c++/v1/__bit/rotate.h b/third_party/libcxx/include/c++/v1/__bit/rotate.h
deleted file mode 100644
index fde9058..0000000
--- a/third_party/libcxx/include/c++/v1/__bit/rotate.h
+++ /dev/null
@@ -1,60 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___BIT_ROTATE_H
-#define _LIBCPP___BIT_ROTATE_H
-
-#include <__config>
-#include <__type_traits/integer_traits.h>
-#include <limits>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-// Writing two full functions for rotl and rotr makes it easier for the compiler
-// to optimize the code. On x86 this function becomes the ROL instruction and
-// the rotr function becomes the ROR instruction.
-
-#if _LIBCPP_STD_VER >= 20
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp rotl(_Tp __t, int __cnt) noexcept {
-  const int __n = numeric_limits<_Tp>::digits;
-  int __r       = __cnt % __n;
-
-  if (__r == 0)
-    return __t;
-
-  if (__r > 0)
-    return (__t << __r) | (__t >> (__n - __r));
-
-  return (__t >> -__r) | (__t << (__n + __r));
-}
-
-template <__unsigned_integer _Tp>
-[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp rotr(_Tp __t, int __cnt) noexcept {
-  const int __n = numeric_limits<_Tp>::digits;
-  int __r       = __cnt % __n;
-
-  if (__r == 0)
-    return __t;
-
-  if (__r > 0)
-    return (__t >> __r) | (__t << (__n - __r));
-
-  return (__t << -__r) | (__t >> (__n + __r));
-}
-
-#endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___BIT_ROTATE_H