19 files changed, 0 insertions, 1687 deletions

diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
deleted file mode 100644
index 73f7cfc4d8e38..0000000000000
--- a/include/CMakeLists.txt
+++ /dev/null
@@ -1,273 +0,0 @@
-set(files
-  __bit_reference
-  __bsd_locale_defaults.h
-  __bsd_locale_fallbacks.h
-  __errc
-  __debug
-  __functional_03
-  __functional_base
-  __functional_base_03
-  __hash_table
-  __libcpp_version
-  __locale
-  __mutex_base
-  __node_handle
-  __nullptr
-  __split_buffer
-  __sso_allocator
-  __std_stream
-  __string
-  __threading_support
-  __tree
-  __tuple
-  __undef_macros
-  algorithm
-  any
-  array
-  atomic
-  bit
-  bitset
-  cassert
-  ccomplex
-  cctype
-  cerrno
-  cfenv
-  cfloat
-  charconv
-  chrono
-  cinttypes
-  ciso646
-  climits
-  clocale
-  cmath
-  codecvt
-  compare
-  complex
-  complex.h
-  condition_variable
-  csetjmp
-  csignal
-  cstdarg
-  cstdbool
-  cstddef
-  cstdint
-  cstdio
-  cstdlib
-  cstring
-  ctgmath
-  ctime
-  ctype.h
-  cwchar
-  cwctype
-  deque
-  errno.h
-  exception
-  experimental/__config
-  experimental/__memory
-  experimental/algorithm
-  experimental/any
-  experimental/chrono
-  experimental/coroutine
-  experimental/deque
-  experimental/filesystem
-  experimental/forward_list
-  experimental/functional
-  experimental/iterator
-  experimental/list
-  experimental/map
-  experimental/memory_resource
-  experimental/numeric
-  experimental/optional
-  experimental/propagate_const
-  experimental/ratio
-  experimental/regex
-  experimental/set
-  experimental/simd
-  experimental/string
-  experimental/string_view
-  experimental/system_error
-  experimental/tuple
-  experimental/type_traits
-  experimental/unordered_map
-  experimental/unordered_set
-  experimental/utility
-  experimental/vector
-  ext/__hash
-  ext/hash_map
-  ext/hash_set
-  filesystem
-  float.h
-  forward_list
-  fstream
-  functional
-  future
-  initializer_list
-  inttypes.h
-  iomanip
-  ios
-  iosfwd
-  iostream
-  istream
-  iterator
-  limits
-  limits.h
-  list
-  locale
-  locale.h
-  map
-  math.h
-  memory
-  module.modulemap
-  mutex
-  new
-  numeric
-  optional
-  ostream
-  queue
-  random
-  ratio
-  regex
-  scoped_allocator
-  set
-  setjmp.h
-  shared_mutex
-  span
-  sstream
-  stack
-  stdbool.h
-  stddef.h
-  stdexcept
-  stdint.h
-  stdio.h
-  stdlib.h
-  streambuf
-  string
-  string.h
-  string_view
-  strstream
-  system_error
-  tgmath.h
-  thread
-  tuple
-  type_traits
-  typeindex
-  typeinfo
-  unordered_map
-  unordered_set
-  utility
-  valarray
-  variant
-  vector
-  version
-  wchar.h
-  wctype.h
-  )
-
-if(LIBCXX_INSTALL_SUPPORT_HEADERS)
-  set(files
-    ${files}
-    support/android/locale_bionic.h
-    support/fuchsia/xlocale.h
-    support/ibm/limits.h
-    support/ibm/locale_mgmt_aix.h
-    support/ibm/support.h
-    support/ibm/xlocale.h
-    support/musl/xlocale.h
-    support/newlib/xlocale.h
-    support/solaris/floatingpoint.h
-    support/solaris/wchar.h
-    support/solaris/xlocale.h
-    support/win32/limits_msvc_win32.h
-    support/win32/locale_win32.h
-    support/xlocale/__nop_locale_mgmt.h
-    support/xlocale/__posix_l_fallback.h
-    support/xlocale/__strtonum_fallback.h
-    support/xlocale/xlocale.h
-    )
-endif()
-
-if (LIBCXX_NEEDS_SITE_CONFIG)
-  # Generate a custom __config header. The new header is created
-  # by prepending __config_site to the current __config header.
-  add_custom_command(OUTPUT ${LIBCXX_BINARY_DIR}/__generated_config
-    COMMAND ${PYTHON_EXECUTABLE} ${LIBCXX_SOURCE_DIR}/utils/cat_files.py
-      ${LIBCXX_BINARY_DIR}/__config_site
-      ${LIBCXX_SOURCE_DIR}/include/__config
-      -o ${LIBCXX_BINARY_DIR}/__generated_config
-    DEPENDS ${LIBCXX_SOURCE_DIR}/include/__config
-            ${LIBCXX_BINARY_DIR}/__config_site
-  )
-  # Add a target that executes the generation commands.
-  add_custom_target(cxx-generated-config ALL
-    DEPENDS ${LIBCXX_BINARY_DIR}/__generated_config)
-  set(generated_config_deps cxx-generated-config)
-else()
-  set(files
-    ${files}
-    __config
-    )
-endif()
-
-if(NOT LIBCXX_USING_INSTALLED_LLVM AND LIBCXX_HEADER_DIR)
-  set(output_dir ${LIBCXX_HEADER_DIR}/include/c++/v1)
-
-  set(out_files)
-  foreach(f ${files})
-    set(src ${CMAKE_CURRENT_SOURCE_DIR}/${f})
-    set(dst ${output_dir}/${f})
-    add_custom_command(OUTPUT ${dst}
-      DEPENDS ${src}
-      COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
-      COMMENT "Copying CXX header ${f}")
-    list(APPEND out_files ${dst})
-  endforeach()
-
-  if (LIBCXX_NEEDS_SITE_CONFIG)
-    # Copy the generated header as __config into build directory.
-    set(src ${LIBCXX_BINARY_DIR}/__generated_config)
-    set(dst ${output_dir}/__config)
-    add_custom_command(OUTPUT ${dst}
-        DEPENDS ${src} ${generated_config_deps}
-        COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
-        COMMENT "Copying CXX __config")
-    list(APPEND out_files ${dst})
-  endif()
-
-  add_custom_target(cxx-headers ALL DEPENDS ${out_files} ${LIBCXX_CXX_ABI_HEADER_TARGET})
-else()
-  add_custom_target(cxx-headers)
-endif()
-set_target_properties(cxx-headers PROPERTIES FOLDER "Misc")
-
-if (LIBCXX_INSTALL_HEADERS)
-  foreach(file ${files})
-    get_filename_component(dir ${file} DIRECTORY)
-    install(FILES ${file}
-      DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}include/c++/v1/${dir}
-      COMPONENT cxx-headers
-      PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-    )
-  endforeach()
-
-  if (LIBCXX_NEEDS_SITE_CONFIG)
-    # Install the generated header as __config.
-    install(FILES ${LIBCXX_BINARY_DIR}/__generated_config
-      DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}include/c++/v1
-      PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-      RENAME __config
-      COMPONENT cxx-headers)
-  endif()
-
-  if (NOT CMAKE_CONFIGURATION_TYPES)
-    add_custom_target(install-cxx-headers
-                      DEPENDS cxx-headers ${generated_config_deps}
-                      COMMAND "${CMAKE_COMMAND}"
-                              -DCMAKE_INSTALL_COMPONENT=cxx-headers
-                              -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
-    # Stripping is a no-op for headers
-    add_custom_target(install-cxx-headers-stripped DEPENDS install-cxx-headers)
-
-    add_custom_target(install-libcxx-headers DEPENDS install-cxx-headers)
-    add_custom_target(install-libcxx-headers-stripped DEPENDS install-cxx-headers-stripped)
-  endif()
-endif()
diff --git a/include/__config_site.in b/include/__config_site.in
deleted file mode 100644
index 580a6aa4c07bb..0000000000000
--- a/include/__config_site.in
+++ /dev/null
@@ -1,35 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_CONFIG_SITE
-#define _LIBCPP_CONFIG_SITE
-
-#cmakedefine _LIBCPP_ABI_VERSION @_LIBCPP_ABI_VERSION@
-#cmakedefine _LIBCPP_ABI_UNSTABLE
-#cmakedefine _LIBCPP_ABI_FORCE_ITANIUM
-#cmakedefine _LIBCPP_ABI_FORCE_MICROSOFT
-#cmakedefine _LIBCPP_HIDE_FROM_ABI_PER_TU_BY_DEFAULT
-#cmakedefine _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
-#cmakedefine _LIBCPP_HAS_NO_STDIN
-#cmakedefine _LIBCPP_HAS_NO_STDOUT
-#cmakedefine _LIBCPP_HAS_NO_THREADS
-#cmakedefine _LIBCPP_HAS_NO_MONOTONIC_CLOCK
-#cmakedefine _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
-#cmakedefine _LIBCPP_HAS_MUSL_LIBC
-#cmakedefine _LIBCPP_HAS_THREAD_API_PTHREAD
-#cmakedefine _LIBCPP_HAS_THREAD_API_EXTERNAL
-#cmakedefine _LIBCPP_HAS_THREAD_API_WIN32
-#cmakedefine _LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL
-#cmakedefine _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS
-#cmakedefine _LIBCPP_NO_VCRUNTIME
-#cmakedefine _LIBCPP_ABI_NAMESPACE @_LIBCPP_ABI_NAMESPACE@
-
-@_LIBCPP_ABI_DEFINES@
-
-#endif // _LIBCPP_CONFIG_SITE
diff --git a/include/support/android/locale_bionic.h b/include/support/android/locale_bionic.h
deleted file mode 100644
index 50fcf5c36a774..0000000000000
--- a/include/support/android/locale_bionic.h
+++ /dev/null
@@ -1,68 +0,0 @@
-// -*- C++ -*-
-//===------------------- support/android/locale_bionic.h ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_ANDROID_LOCALE_BIONIC_H
-#define _LIBCPP_SUPPORT_ANDROID_LOCALE_BIONIC_H
-
-#if defined(__BIONIC__)
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdlib.h>
-#include <xlocale.h>
-
-#ifdef __cplusplus
-}
-#endif
-
-#if defined(__ANDROID__)
-
-#include <android/api-level.h>
-#include <android/ndk-version.h>
-#include <support/xlocale/__posix_l_fallback.h>
-// In NDK versions later than 16, locale-aware functions are provided by
-// legacy_stdlib_inlines.h
-#if __NDK_MAJOR__ <= 16
-#if __ANDROID_API__ < 21
-#include <support/xlocale/__strtonum_fallback.h>
-#elif __ANDROID_API__ < 26
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-inline _LIBCPP_INLINE_VISIBILITY float strtof_l(const char* __nptr, char** __endptr,
-                                                locale_t) {
-  return ::strtof(__nptr, __endptr);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY double strtod_l(const char* __nptr,
-                                                 char** __endptr, locale_t) {
-  return ::strtod(__nptr, __endptr);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY long strtol_l(const char* __nptr, char** __endptr,
-                                               int __base, locale_t) {
-  return ::strtol(__nptr, __endptr, __base);
-}
-
-#if defined(__cplusplus)
-}
-#endif
-
-#endif // __ANDROID_API__ < 26
-
-#endif // __NDK_MAJOR__ <= 16
-#endif // defined(__ANDROID__)
-
-#endif // defined(__BIONIC__)
-#endif // _LIBCPP_SUPPORT_ANDROID_LOCALE_BIONIC_H
diff --git a/include/support/fuchsia/xlocale.h b/include/support/fuchsia/xlocale.h
deleted file mode 100644
index 1de2fca28e226..0000000000000
--- a/include/support/fuchsia/xlocale.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// -*- C++ -*-
-//===------------------- support/fuchsia/xlocale.h ------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_FUCHSIA_XLOCALE_H
-#define _LIBCPP_SUPPORT_FUCHSIA_XLOCALE_H
-
-#if defined(__Fuchsia__)
-
-#include <cstdlib>
-#include <cwchar>
-#include <support/xlocale/__posix_l_fallback.h>
-#include <support/xlocale/__strtonum_fallback.h>
-
-#endif // defined(__Fuchsia__)
-
-#endif // _LIBCPP_SUPPORT_FUCHSIA_XLOCALE_H
diff --git a/include/support/ibm/limits.h b/include/support/ibm/limits.h
deleted file mode 100644
index efdb359659653..0000000000000
--- a/include/support/ibm/limits.h
+++ /dev/null
@@ -1,99 +0,0 @@
-// -*- C++ -*-
-//===--------------------- support/ibm/limits.h ---------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_IBM_LIMITS_H
-#define _LIBCPP_SUPPORT_IBM_LIMITS_H
-
-#if !defined(_AIX) // Linux
-#include <math.h> // for HUGE_VAL, HUGE_VALF, HUGE_VALL, and NAN
-
-static const unsigned int _QNAN_F = 0x7fc00000;
-#define NANF (*((float *)(&_QNAN_F)))
-static const unsigned int _QNAN_LDBL128[4] = {0x7ff80000, 0x0, 0x0, 0x0};
-#define NANL (*((long double *)(&_QNAN_LDBL128)))
-static const unsigned int _SNAN_F= 0x7f855555;
-#define NANSF (*((float *)(&_SNAN_F)))
-static const unsigned int _SNAN_D[2] = {0x7ff55555, 0x55555555};
-#define NANS (*((double *)(&_SNAN_D)))
-static const unsigned int _SNAN_LDBL128[4] = {0x7ff55555, 0x55555555, 0x0, 0x0};
-#define NANSL (*((long double *)(&_SNAN_LDBL128)))
-
-#define __builtin_huge_val()     HUGE_VAL
-#define __builtin_huge_valf()    HUGE_VALF
-#define __builtin_huge_vall()    HUGE_VALL
-#define __builtin_nan(__dummy)   NAN
-#define __builtin_nanf(__dummy)  NANF
-#define __builtin_nanl(__dummy)  NANL
-#define __builtin_nans(__dummy)  NANS
-#define __builtin_nansf(__dummy) NANSF
-#define __builtin_nansl(__dummy) NANSL
-
-#else
-
-#include <math.h>
-#include <float.h> // limit constants
-
-#define __builtin_huge_val()     HUGE_VAL  //0x7ff0000000000000
-#define __builtin_huge_valf()    HUGE_VALF //0x7f800000
-#define __builtin_huge_vall()    HUGE_VALL //0x7ff0000000000000
-#define __builtin_nan(__dummy)   nan(__dummy) //0x7ff8000000000000
-#define __builtin_nanf(__dummy)  nanf(__dummy) // 0x7ff80000
-#define __builtin_nanl(__dummy)  nanl(__dummy) //0x7ff8000000000000
-#define __builtin_nans(__dummy)  DBL_SNAN //0x7ff5555555555555
-#define __builtin_nansf(__dummy) FLT_SNAN //0x7f855555
-#define __builtin_nansl(__dummy) DBL_SNAN //0x7ff5555555555555
-
-#define __FLT_MANT_DIG__   FLT_MANT_DIG
-#define __FLT_DIG__        FLT_DIG
-#define __FLT_RADIX__      FLT_RADIX
-#define __FLT_MIN_EXP__    FLT_MIN_EXP
-#define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP
-#define __FLT_MAX_EXP__    FLT_MAX_EXP
-#define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP
-#define __FLT_MIN__        FLT_MIN
-#define __FLT_MAX__        FLT_MAX
-#define __FLT_EPSILON__    FLT_EPSILON
-// predefined by XLC on LoP
-#define __FLT_DENORM_MIN__ 1.40129846e-45F
-
-#define __DBL_MANT_DIG__   DBL_MANT_DIG
-#define __DBL_DIG__        DBL_DIG
-#define __DBL_MIN_EXP__    DBL_MIN_EXP
-#define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP
-#define __DBL_MAX_EXP__    DBL_MAX_EXP
-#define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP
-#define __DBL_MIN__        DBL_MIN
-#define __DBL_MAX__        DBL_MAX
-#define __DBL_EPSILON__    DBL_EPSILON
-// predefined by XLC on LoP
-#define __DBL_DENORM_MIN__ 4.9406564584124654e-324
-
-#define __LDBL_MANT_DIG__   LDBL_MANT_DIG
-#define __LDBL_DIG__        LDBL_DIG
-#define __LDBL_MIN_EXP__    LDBL_MIN_EXP
-#define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP
-#define __LDBL_MAX_EXP__    LDBL_MAX_EXP
-#define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP
-#define __LDBL_MIN__        LDBL_MIN
-#define __LDBL_MAX__        LDBL_MAX
-#define __LDBL_EPSILON__    LDBL_EPSILON
-// predefined by XLC on LoP
-#if __LONGDOUBLE128
-#define __LDBL_DENORM_MIN__ 4.94065645841246544176568792868221e-324L
-#else
-#define __LDBL_DENORM_MIN__ 4.9406564584124654e-324L
-#endif
-
-// predefined by XLC on LoP
-#define __CHAR_BIT__    8
-
-#endif // _AIX
-
-#endif // _LIBCPP_SUPPORT_IBM_LIMITS_H
diff --git a/include/support/ibm/locale_mgmt_aix.h b/include/support/ibm/locale_mgmt_aix.h
deleted file mode 100644
index e3b7a78c45a0f..0000000000000
--- a/include/support/ibm/locale_mgmt_aix.h
+++ /dev/null
@@ -1,85 +0,0 @@
-// -*- C++ -*-
-//===------------------- support/ibm/locale_mgmt_aix.h --------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_IBM_LOCALE_MGMT_AIX_H
-#define _LIBCPP_SUPPORT_IBM_LOCALE_MGMT_AIX_H
-
-#if defined(_AIX)
-#include "cstdlib"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if !defined(_AIX71)
-// AIX 7.1 and higher has these definitions.  Definitions and stubs
-// are provied here as a temporary workaround on AIX 6.1.
-
-#define LC_COLLATE_MASK         1
-#define LC_CTYPE_MASK           2
-#define LC_MESSAGES_MASK        4
-#define LC_MONETARY_MASK        8
-#define LC_NUMERIC_MASK         16
-#define LC_TIME_MASK            32
-#define LC_ALL_MASK             (LC_COLLATE_MASK | LC_CTYPE_MASK | \
-                                 LC_MESSAGES_MASK | LC_MONETARY_MASK |\
-                                 LC_NUMERIC_MASK | LC_TIME_MASK)
-
-typedef void* locale_t;
-
-// The following are stubs.  They are not supported on AIX 6.1.
-static inline
-locale_t newlocale(int category_mask, const char *locale, locale_t base)
-{
-  _LC_locale_t *newloc, *loc;
-  if ((loc = (_LC_locale_t *)__xopen_locale(locale)) == NULL)
-  {
-    errno = EINVAL;
-    return (locale_t)0;
-  }
-  if ((newloc = (_LC_locale_t *)calloc(1, sizeof(_LC_locale_t))) == NULL)
-  {
-    errno = ENOMEM;
-    return (locale_t)0;
-  }
-  if (!base)
-    base = (_LC_locale_t *)__xopen_locale("C");
-  memcpy(newloc, base, sizeof (_LC_locale_t));
-  if (category_mask & LC_COLLATE_MASK)
-    newloc->lc_collate = loc->lc_collate;
-  if (category_mask & LC_CTYPE_MASK)
-    newloc->lc_ctype = loc->lc_ctype;
-  //if (category_mask & LC_MESSAGES_MASK)
-  //  newloc->lc_messages = loc->lc_messages;
-  if (category_mask & LC_MONETARY_MASK)
-    newloc->lc_monetary = loc->lc_monetary;
-  if (category_mask & LC_TIME_MASK)
-    newloc->lc_time = loc->lc_time;
-  if (category_mask & LC_NUMERIC_MASK)
-    newloc->lc_numeric = loc->lc_numeric;
-  return (locale_t)newloc;
-}
-static inline
-void freelocale(locale_t locobj)
-{
-  free(locobj);
-}
-static inline
-locale_t uselocale(locale_t newloc)
-{
-  return (locale_t)0;
-}
-#endif // !defined(_AIX71)
-
-#ifdef __cplusplus
-}
-#endif
-#endif // defined(_AIX)
-#endif // _LIBCPP_SUPPORT_IBM_LOCALE_MGMT_AIX_H
diff --git a/include/support/ibm/support.h b/include/support/ibm/support.h
deleted file mode 100644
index 0abfa7f95a65a..0000000000000
--- a/include/support/ibm/support.h
+++ /dev/null
@@ -1,54 +0,0 @@
-// -*- C++ -*-
-//===----------------------- support/ibm/support.h ----------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_IBM_SUPPORT_H
-#define _LIBCPP_SUPPORT_IBM_SUPPORT_H
-
-extern "builtin" int __popcnt4(unsigned int);
-extern "builtin" int __popcnt8(unsigned long long);
-extern "builtin" unsigned int __cnttz4(unsigned int);
-extern "builtin" unsigned int __cnttz8(unsigned long long);
-extern "builtin" unsigned int __cntlz4(unsigned int);
-extern "builtin" unsigned int __cntlz8(unsigned long long);
-
-// Builtin functions for counting population
-#define __builtin_popcount(x) __popcnt4(x)
-#define __builtin_popcountll(x) __popcnt8(x)
-#if defined(__64BIT__)
-#define __builtin_popcountl(x) __builtin_popcountll(x)
-#else
-#define __builtin_popcountl(x) __builtin_popcount(x)
-#endif
-
-// Builtin functions for counting trailing zeros
-#define __builtin_ctz(x) __cnttz4(x)
-#define __builtin_ctzll(x) __cnttz8(x)
-#if defined(__64BIT__)
-#define __builtin_ctzl(x) __builtin_ctzll(x)
-#else
-#define __builtin_ctzl(x) __builtin_ctz(x)
-#endif
-
-// Builtin functions for counting leading zeros
-#define __builtin_clz(x) __cntlz4(x)
-#define __builtin_clzll(x) __cntlz8(x)
-#if defined(__64BIT__)
-#define __builtin_clzl(x) __builtin_clzll(x)
-#else
-#define __builtin_clzl(x) __builtin_clz(x)
-#endif
-
-#if defined(__64BIT__)
-#define __SIZE_WIDTH__ 64
-#else
-#define __SIZE_WIDTH__ 32
-#endif
-
-#endif // _LIBCPP_SUPPORT_IBM_SUPPORT_H
diff --git a/include/support/ibm/xlocale.h b/include/support/ibm/xlocale.h
deleted file mode 100644
index f39c0ba95d901..0000000000000
--- a/include/support/ibm/xlocale.h
+++ /dev/null
@@ -1,271 +0,0 @@
-// -*- C++ -*-
-//===--------------------- support/ibm/xlocale.h -------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_IBM_XLOCALE_H
-#define _LIBCPP_SUPPORT_IBM_XLOCALE_H
-#include <support/ibm/locale_mgmt_aix.h>
-
-#if defined(_AIX)
-#include "cstdlib"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if !defined(_AIX71)
-// AIX 7.1 and higher has these definitions.  Definitions and stubs
-// are provied here as a temporary workaround on AIX 6.1.
-static inline
-int isalnum_l(int c, locale_t locale)
-{
-  return __xisalnum(locale, c);
-}
-static inline
-int isalpha_l(int c, locale_t locale)
-{
-  return __xisalpha(locale, c);
-}
-static inline
-int isblank_l(int c, locale_t locale)
-{
-  return __xisblank(locale, c);
-}
-static inline
-int iscntrl_l(int c, locale_t locale)
-{
-  return __xiscntrl(locale, c);
-}
-static inline
-int isdigit_l(int c, locale_t locale)
-{
-  return __xisdigit(locale, c);
-}
-static inline
-int isgraph_l(int c, locale_t locale)
-{
-  return __xisgraph(locale, c);
-}
-static inline
-int islower_l(int c, locale_t locale)
-{
-  return __xislower(locale, c);
-}
-static inline
-int isprint_l(int c, locale_t locale)
-{
-  return __xisprint(locale, c);
-}
-
-static inline
-int ispunct_l(int c, locale_t locale)
-{
-  return __xispunct(locale, c);
-}
-static inline
-int isspace_l(int c, locale_t locale)
-{
-  return __xisspace(locale, c);
-}
-static inline
-int isupper_l(int c, locale_t locale)
-{
-  return __xisupper(locale, c);
-}
-
-static inline
-int isxdigit_l(int c, locale_t locale)
-{
-  return __xisxdigit(locale, c);
-}
-
-static inline
-int iswalnum_l(wchar_t wc, locale_t locale)
-{
-  return __xiswalnum(locale, wc); 
-}
-
-static inline
-int iswalpha_l(wchar_t wc, locale_t locale)
-{
-  return __xiswalpha(locale, wc);
-}
-
-static inline
-int iswblank_l(wchar_t wc, locale_t locale)
-{
-  return __xiswblank(locale, wc);
-}
-
-static inline
-int iswcntrl_l(wchar_t wc, locale_t locale)
-{
-  return __xiswcntrl(locale, wc);
-}
-
-static inline
-int iswdigit_l(wchar_t wc, locale_t locale)
-{
-  return __xiswdigit(locale, wc);
-}
-
-static inline
-int iswgraph_l(wchar_t wc, locale_t locale)
-{
-  return __xiswgraph(locale, wc);
-}
-
-static inline
-int iswlower_l(wchar_t wc, locale_t locale)
-{
-  return __xiswlower(locale, wc);
-}
-
-static inline
-int iswprint_l(wchar_t wc, locale_t locale)
-{
-  return __xiswprint(locale, wc);
-}
-
-static inline
-int iswpunct_l(wchar_t wc, locale_t locale)
-{
-  return __xiswpunct(locale, wc);
-}
-
-static inline
-int iswspace_l(wchar_t wc, locale_t locale)
-{
-  return __xiswspace(locale, wc);
-}
-
-static inline
-int iswupper_l(wchar_t wc, locale_t locale)
-{
-  return __xiswupper(locale, wc);
-}
-
-static inline
-int iswxdigit_l(wchar_t wc, locale_t locale)
-{
-  return __xiswxdigit(locale, wc);
-}
-
-static inline
-int iswctype_l(wint_t wc, wctype_t desc, locale_t locale)
-{
-  return __xiswctype(locale, wc, desc); 
-}
-
-static inline
-int toupper_l(int c, locale_t locale)
-{
-  return __xtoupper(locale, c);
-}
-static inline
-int tolower_l(int c, locale_t locale)
-{
-  return __xtolower(locale, c);
-}
-static inline
-wint_t towupper_l(wint_t wc, locale_t locale)
-{
-  return __xtowupper(locale, wc);
-}
-static inline
-wint_t towlower_l(wint_t wc, locale_t locale)
-{
-  return __xtowlower(locale, wc);
-}
-
-static inline
-int strcoll_l(const char *__s1, const char *__s2, locale_t locale)
-{
-  return __xstrcoll(locale, __s1, __s2);
-}
-static inline
-int wcscoll_l(const wchar_t *__s1, const wchar_t *__s2, locale_t locale)
-{
-  return __xwcscoll(locale, __s1, __s2);
-}
-static inline
-size_t strxfrm_l(char *__s1, const char *__s2, size_t __n, locale_t locale)
-{
-  return __xstrxfrm(locale, __s1, __s2, __n);
-}
-
-static inline
-size_t wcsxfrm_l(wchar_t *__ws1, const wchar_t *__ws2, size_t __n,
-    locale_t locale)
-{
-  return __xwcsxfrm(locale, __ws1, __ws2, __n);
-}
-#endif // !defined(_AIX71)
-
-// strftime_l() is defined by POSIX. However, AIX 7.1 does not have it
-// implemented yet.
-static inline
-size_t strftime_l(char *__s, size_t __size, const char *__fmt,
-                  const struct tm *__tm, locale_t locale) {
-  return __xstrftime(locale, __s, __size, __fmt, __tm);
-}
-
-// The following are not POSIX routines.  These are quick-and-dirty hacks
-// to make things pretend to work
-static inline
-long long strtoll_l(const char *__nptr, char **__endptr,
-    int __base, locale_t locale) {
-  return strtoll(__nptr, __endptr, __base);
-}
-static inline
-long strtol_l(const char *__nptr, char **__endptr,
-    int __base, locale_t locale) {
-  return strtol(__nptr, __endptr, __base);
-}
-static inline
-long double strtold_l(const char *__nptr, char **__endptr,
-    locale_t locale) {
-  return strtold(__nptr, __endptr);
-}
-static inline
-unsigned long long strtoull_l(const char *__nptr, char **__endptr,
-    int __base, locale_t locale) {
-  return strtoull(__nptr, __endptr, __base);
-}
-static inline
-unsigned long strtoul_l(const char *__nptr, char **__endptr,
-    int __base, locale_t locale) {
-  return strtoul(__nptr, __endptr, __base);
-}
-
-static inline
-int vasprintf(char **strp, const char *fmt, va_list ap)
-{
-  const size_t buff_size = 256;
-  int str_size;
-  if ((*strp = (char *)malloc(buff_size)) == NULL)
-  {
-    return -1;
-  }
-  if ((str_size = vsnprintf(*strp, buff_size, fmt,  ap)) >= buff_size)
-  {
-    if ((*strp = (char *)realloc(*strp, str_size + 1)) == NULL)
-    {
-      return -1;
-    }
-    str_size = vsnprintf(*strp, str_size + 1, fmt,  ap);
-  }
-  return str_size;
-}  
-
-#ifdef __cplusplus
-}
-#endif
-#endif // defined(_AIX)
-#endif // _LIBCPP_SUPPORT_IBM_XLOCALE_H
diff --git a/include/support/musl/xlocale.h b/include/support/musl/xlocale.h
deleted file mode 100644
index 3e31c99596ce9..0000000000000
--- a/include/support/musl/xlocale.h
+++ /dev/null
@@ -1,58 +0,0 @@
-// -*- C++ -*-
-//===------------------- support/musl/xlocale.h ------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-// This adds support for the extended locale functions that are currently
-// missing from the Musl C library.
-//
-// This only works when the specified locale is "C" or "POSIX", but that's
-// about as good as we can do without implementing full xlocale support
-// in Musl.
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_MUSL_XLOCALE_H
-#define _LIBCPP_SUPPORT_MUSL_XLOCALE_H
-
-#include <cstdlib>
-#include <cwchar>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static inline long long strtoll_l(const char *nptr, char **endptr, int base,
-                                  locale_t) {
-  return strtoll(nptr, endptr, base);
-}
-
-static inline unsigned long long strtoull_l(const char *nptr, char **endptr,
-                                            int base, locale_t) {
-  return strtoull(nptr, endptr, base);
-}
-
-static inline long long wcstoll_l(const wchar_t *nptr, wchar_t **endptr,
-                                  int base, locale_t) {
-  return wcstoll(nptr, endptr, base);
-}
-
-static inline unsigned long long wcstoull_l(const wchar_t *nptr,
-                                            wchar_t **endptr, int base,
-                                            locale_t) {
-  return wcstoull(nptr, endptr, base);
-}
-
-static inline long double wcstold_l(const wchar_t *nptr, wchar_t **endptr,
-                                    locale_t) {
-  return wcstold(nptr, endptr);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // _LIBCPP_SUPPORT_MUSL_XLOCALE_H
diff --git a/include/support/newlib/xlocale.h b/include/support/newlib/xlocale.h
deleted file mode 100644
index 09f9e39875267..0000000000000
--- a/include/support/newlib/xlocale.h
+++ /dev/null
@@ -1,28 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_NEWLIB_XLOCALE_H
-#define _LIBCPP_SUPPORT_NEWLIB_XLOCALE_H
-
-#if defined(_NEWLIB_VERSION)
-
-#include <cstdlib>
-#include <clocale>
-#include <cwctype>
-#include <ctype.h>
-#if !defined(__NEWLIB__) || __NEWLIB__ < 2 || \
-    __NEWLIB__ == 2 && __NEWLIB_MINOR__ < 5
-#include <support/xlocale/__nop_locale_mgmt.h>
-#include <support/xlocale/__posix_l_fallback.h>
-#include <support/xlocale/__strtonum_fallback.h>
-#endif
-
-#endif // _NEWLIB_VERSION
-
-#endif
diff --git a/include/support/solaris/floatingpoint.h b/include/support/solaris/floatingpoint.h
deleted file mode 100644
index 999d144b1f2e5..0000000000000
--- a/include/support/solaris/floatingpoint.h
+++ /dev/null
@@ -1,14 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#define atof sun_atof
-#define strtod sun_strtod
-#include_next "floatingpoint.h"
-#undef atof
-#undef strtod
diff --git a/include/support/solaris/wchar.h b/include/support/solaris/wchar.h
deleted file mode 100644
index 0e8e660c8bd4f..0000000000000
--- a/include/support/solaris/wchar.h
+++ /dev/null
@@ -1,47 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#define iswalpha sun_iswalpha
-#define iswupper sun_iswupper
-#define iswlower sun_iswlower
-#define iswdigit sun_iswdigit
-#define iswxdigit sun_iswxdigit
-#define iswalnum sun_iswalnum
-#define iswspace sun_iswspace
-#define iswpunct sun_iswpunct
-#define iswprint sun_iswprint
-#define iswgraph sun_iswgraph
-#define iswcntrl sun_iswcntrl
-#define iswctype sun_iswctype
-#define towlower sun_towlower
-#define towupper sun_towupper
-#define wcswcs sun_wcswcs
-#define wcswidth sun_wcswidth
-#define wcwidth sun_wcwidth
-#define wctype sun_wctype
-#define _WCHAR_T 1
-#include_next "wchar.h"
-#undef iswalpha 
-#undef iswupper
-#undef iswlower
-#undef iswdigit
-#undef iswxdigit
-#undef iswalnum
-#undef iswspace
-#undef iswpunct
-#undef iswprint
-#undef iswgraph
-#undef iswcntrl
-#undef iswctype
-#undef towlower
-#undef towupper
-#undef wcswcs
-#undef wcswidth
-#undef wcwidth
-#undef wctype
diff --git a/include/support/solaris/xlocale.h b/include/support/solaris/xlocale.h
deleted file mode 100644
index e20ef7a6e53b2..0000000000000
--- a/include/support/solaris/xlocale.h
+++ /dev/null
@@ -1,77 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-////////////////////////////////////////////////////////////////////////////////
-// Minimal xlocale implementation for Solaris.  This implements the subset of
-// the xlocale APIs that libc++ depends on.
-////////////////////////////////////////////////////////////////////////////////
-#ifndef __XLOCALE_H_INCLUDED
-#define __XLOCALE_H_INCLUDED
-
-#include <stdlib.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-int snprintf_l(char *__s, size_t __n, locale_t __l, const char *__format, ...);
-int asprintf_l(char **__s, locale_t __l, const char *__format, ...);
-
-int sscanf_l(const char *__s, locale_t __l, const char *__format, ...);
-
-int toupper_l(int __c, locale_t __l);
-int tolower_l(int __c, locale_t __l);
-
-struct lconv *localeconv(void);
-struct lconv *localeconv_l(locale_t __l);
-
-// FIXME: These are quick-and-dirty hacks to make things pretend to work
-static inline
-long long strtoll_l(const char *__nptr, char **__endptr,
-    int __base, locale_t __loc) {
-  return strtoll(__nptr, __endptr, __base);
-}
-static inline
-long strtol_l(const char *__nptr, char **__endptr,
-    int __base, locale_t __loc) {
-  return strtol(__nptr, __endptr, __base);
-}
-static inline
-unsigned long long strtoull_l(const char *__nptr, char **__endptr,
-    int __base, locale_t __loc) {
-  return strtoull(__nptr, __endptr, __base);
-}
-static inline
-unsigned long strtoul_l(const char *__nptr, char **__endptr,
-    int __base, locale_t __loc) {
-  return strtoul(__nptr, __endptr, __base);
-}
-static inline
-float strtof_l(const char *__nptr, char **__endptr,
-    locale_t __loc) {
-  return strtof(__nptr, __endptr);
-}
-static inline
-double strtod_l(const char *__nptr, char **__endptr,
-    locale_t __loc) {
-  return strtod(__nptr, __endptr);
-}
-static inline
-long double strtold_l(const char *__nptr, char **__endptr,
-    locale_t __loc) {
-  return strtold(__nptr, __endptr);
-}
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/include/support/win32/limits_msvc_win32.h b/include/support/win32/limits_msvc_win32.h
deleted file mode 100644
index 1ab2e0b6dc1b2..0000000000000
--- a/include/support/win32/limits_msvc_win32.h
+++ /dev/null
@@ -1,72 +0,0 @@
-// -*- C++ -*-
-//===------------------ support/win32/limits_msvc_win32.h -----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
-#define _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
-
-#if !defined(_LIBCPP_MSVCRT)
-#error "This header complements the Microsoft C Runtime library, and should not be included otherwise."
-#endif
-#if defined(__clang__)
-#error "This header should only be included when using Microsofts C1XX frontend"
-#endif
-
-#include <limits.h> // CHAR_BIT
-#include <float.h> // limit constants
-#include <math.h> // HUGE_VAL
-#include <ymath.h> // internal MSVC header providing the needed functionality
-
-#define __CHAR_BIT__       CHAR_BIT
-
-#define __FLT_MANT_DIG__   FLT_MANT_DIG
-#define __FLT_DIG__        FLT_DIG
-#define __FLT_RADIX__      FLT_RADIX
-#define __FLT_MIN_EXP__    FLT_MIN_EXP
-#define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP
-#define __FLT_MAX_EXP__    FLT_MAX_EXP
-#define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP
-#define __FLT_MIN__        FLT_MIN
-#define __FLT_MAX__        FLT_MAX
-#define __FLT_EPSILON__    FLT_EPSILON
-// predefined by MinGW GCC
-#define __FLT_DENORM_MIN__ 1.40129846432481707092e-45F
-
-#define __DBL_MANT_DIG__   DBL_MANT_DIG
-#define __DBL_DIG__        DBL_DIG
-#define __DBL_RADIX__      DBL_RADIX
-#define __DBL_MIN_EXP__    DBL_MIN_EXP
-#define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP
-#define __DBL_MAX_EXP__    DBL_MAX_EXP
-#define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP
-#define __DBL_MIN__        DBL_MIN
-#define __DBL_MAX__        DBL_MAX
-#define __DBL_EPSILON__    DBL_EPSILON
-// predefined by MinGW GCC
-#define __DBL_DENORM_MIN__ double(4.94065645841246544177e-324L)
-
-#define __LDBL_MANT_DIG__   LDBL_MANT_DIG
-#define __LDBL_DIG__        LDBL_DIG
-#define __LDBL_RADIX__      LDBL_RADIX
-#define __LDBL_MIN_EXP__    LDBL_MIN_EXP
-#define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP
-#define __LDBL_MAX_EXP__    LDBL_MAX_EXP
-#define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP
-#define __LDBL_MIN__        LDBL_MIN
-#define __LDBL_MAX__        LDBL_MAX
-#define __LDBL_EPSILON__    LDBL_EPSILON
-// predefined by MinGW GCC
-#define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
-
-// __builtin replacements/workarounds
-#define __builtin_huge_vall()    _LInf._Long_double
-#define __builtin_nanl(__dummmy) _LNan._Long_double
-#define __builtin_nansl(__dummy) _LSnan._Long_double
-
-#endif // _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
diff --git a/include/support/win32/locale_win32.h b/include/support/win32/locale_win32.h
deleted file mode 100644
index c7c6d786cb835..0000000000000
--- a/include/support/win32/locale_win32.h
+++ /dev/null
@@ -1,199 +0,0 @@
-// -*- C++ -*-
-//===--------------------- support/win32/locale_win32.h -------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_WIN32_LOCALE_WIN32_H
-#define _LIBCPP_SUPPORT_WIN32_LOCALE_WIN32_H
-
-#include <__config>
-#include <stdio.h>
-#include <xlocinfo.h> // _locale_t
-#include <__nullptr>
-
-#define LC_COLLATE_MASK _M_COLLATE
-#define LC_CTYPE_MASK _M_CTYPE
-#define LC_MONETARY_MASK _M_MONETARY
-#define LC_NUMERIC_MASK _M_NUMERIC
-#define LC_TIME_MASK _M_TIME
-#define LC_MESSAGES_MASK _M_MESSAGES
-#define LC_ALL_MASK (  LC_COLLATE_MASK \
-                     | LC_CTYPE_MASK \
-                     | LC_MESSAGES_MASK \
-                     | LC_MONETARY_MASK \
-                     | LC_NUMERIC_MASK \
-                     | LC_TIME_MASK )
-
-class locale_t {
-public:
-    locale_t()
-        : __locale(nullptr), __locale_str(nullptr) {}
-    locale_t(std::nullptr_t)
-        : __locale(nullptr), __locale_str(nullptr) {}
-    locale_t(_locale_t __xlocale, const char* __xlocale_str)
-        : __locale(__xlocale), __locale_str(__xlocale_str) {}
-
-    friend bool operator==(const locale_t& __left, const locale_t& __right) {
-        return __left.__locale == __right.__locale;
-    }
-
-    friend bool operator==(const locale_t& __left, int __right) {
-        return __left.__locale == nullptr && __right == 0;
-    }
-
-    friend bool operator==(const locale_t& __left, long long __right) {
-        return __left.__locale == nullptr && __right == 0;
-    }
-
-    friend bool operator==(const locale_t& __left, std::nullptr_t) {
-        return __left.__locale == nullptr;
-    }
-
-    friend bool operator==(int __left, const locale_t& __right) {
-        return __left == 0 && nullptr == __right.__locale;
-    }
-
-    friend bool operator==(std::nullptr_t, const locale_t& __right) {
-        return nullptr == __right.__locale;
-    }
-
-    friend bool operator!=(const locale_t& __left, const locale_t& __right) {
-        return !(__left == __right);
-    }
-
-    friend bool operator!=(const locale_t& __left, int __right) {
-        return !(__left == __right);
-    }
-
-    friend bool operator!=(const locale_t& __left, long long __right) {
-        return !(__left == __right);
-    }
-
-    friend bool operator!=(const locale_t& __left, std::nullptr_t __right) {
-        return !(__left == __right);
-    }
-
-    friend bool operator!=(int __left, const locale_t& __right) {
-        return !(__left == __right);
-    }
-
-    friend bool operator!=(std::nullptr_t __left, const locale_t& __right) {
-        return !(__left == __right);
-    }
-
-    operator bool() const {
-        return __locale != nullptr;
-    }
-
-    const char* __get_locale() const { return __locale_str; }
-
-    operator _locale_t() const {
-        return __locale;
-    }
-private:
-    _locale_t __locale;
-    const char* __locale_str;
-};
-
-// Locale management functions
-#define freelocale _free_locale
-// FIXME: base currently unused. Needs manual work to construct the new locale
-locale_t newlocale( int mask, const char * locale, locale_t base );
-// uselocale can't be implemented on Windows because Windows allows partial modification
-// of thread-local locale and so _get_current_locale() returns a copy while uselocale does
-// not create any copies.
-// We can still implement raii even without uselocale though.
-
-
-lconv *localeconv_l( locale_t loc );
-size_t mbrlen_l( const char *__restrict s, size_t n,
-                 mbstate_t *__restrict ps, locale_t loc);
-size_t mbsrtowcs_l( wchar_t *__restrict dst, const char **__restrict src,
-                    size_t len, mbstate_t *__restrict ps, locale_t loc );
-size_t wcrtomb_l( char *__restrict s, wchar_t wc, mbstate_t *__restrict ps,
-                  locale_t loc);
-size_t mbrtowc_l( wchar_t *__restrict pwc, const char *__restrict s,
-                  size_t n, mbstate_t *__restrict ps, locale_t loc);
-size_t mbsnrtowcs_l( wchar_t *__restrict dst, const char **__restrict src,
-                     size_t nms, size_t len, mbstate_t *__restrict ps, locale_t loc);
-size_t wcsnrtombs_l( char *__restrict dst, const wchar_t **__restrict src,
-                     size_t nwc, size_t len, mbstate_t *__restrict ps, locale_t loc);
-wint_t btowc_l( int c, locale_t loc );
-int wctob_l( wint_t c, locale_t loc );
-
-decltype(MB_CUR_MAX) MB_CUR_MAX_L( locale_t __l );
-
-// the *_l functions are prefixed on Windows, only available for msvcr80+, VS2005+
-#define mbtowc_l _mbtowc_l
-#define strtoll_l _strtoi64_l
-#define strtoull_l _strtoui64_l
-#define strtod_l _strtod_l
-#if defined(_LIBCPP_MSVCRT)
-#define strtof_l _strtof_l
-#define strtold_l _strtold_l
-#else
-float strtof_l(const char*, char**, locale_t);
-long double strtold_l(const char*, char**, locale_t);
-#endif
-inline _LIBCPP_INLINE_VISIBILITY
-int
-islower_l(int c, _locale_t loc)
-{
- return _islower_l((int)c, loc);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-int
-isupper_l(int c, _locale_t loc)
-{
- return _isupper_l((int)c, loc);
-}
-
-#define isdigit_l _isdigit_l
-#define isxdigit_l _isxdigit_l
-#define strcoll_l _strcoll_l
-#define strxfrm_l _strxfrm_l
-#define wcscoll_l _wcscoll_l
-#define wcsxfrm_l _wcsxfrm_l
-#define toupper_l _toupper_l
-#define tolower_l _tolower_l
-#define iswspace_l _iswspace_l
-#define iswprint_l _iswprint_l
-#define iswcntrl_l _iswcntrl_l
-#define iswupper_l _iswupper_l
-#define iswlower_l _iswlower_l
-#define iswalpha_l _iswalpha_l
-#define iswdigit_l _iswdigit_l
-#define iswpunct_l _iswpunct_l
-#define iswxdigit_l _iswxdigit_l
-#define towupper_l _towupper_l
-#define towlower_l _towlower_l
-#if defined(__MINGW32__) && __MSVCRT_VERSION__ < 0x0800
-#define strftime_l( __s, __l, __f, __tm, __loc ) strftime( __s, __l, __f, __tm )
-#else
-#define strftime_l _strftime_l
-#endif
-#define sscanf_l( __s, __l, __f, ...) _sscanf_l( __s, __f, __l, __VA_ARGS__ )
-#define sprintf_l( __s, __l, __f, ... ) _sprintf_l( __s, __f, __l, __VA_ARGS__ )
-#define vsprintf_l( __s, __l, __f, ... ) _vsprintf_l( __s, __f, __l, __VA_ARGS__ )
-#define vsnprintf_l( __s, __n, __l, __f, ... ) _vsnprintf_l( __s, __n, __f, __l, __VA_ARGS__ )
-_LIBCPP_FUNC_VIS int snprintf_l(char *ret, size_t n, locale_t loc, const char *format, ...);
-_LIBCPP_FUNC_VIS int asprintf_l( char **ret, locale_t loc, const char *format, ... );
-_LIBCPP_FUNC_VIS int vasprintf_l( char **ret, locale_t loc, const char *format, va_list ap );
-
-// not-so-pressing FIXME: use locale to determine blank characters
-inline int isblank_l( int c, locale_t /*loc*/ )
-{
-    return ( c == ' ' || c == '\t' );
-}
-inline int iswblank_l( wint_t c, locale_t /*loc*/ )
-{
-    return ( c == L' ' || c == L'\t' );
-}
-
-#endif // _LIBCPP_SUPPORT_WIN32_LOCALE_WIN32_H
diff --git a/include/support/xlocale/__nop_locale_mgmt.h b/include/support/xlocale/__nop_locale_mgmt.h
deleted file mode 100644
index 0d3f23a2c9698..0000000000000
--- a/include/support/xlocale/__nop_locale_mgmt.h
+++ /dev/null
@@ -1,52 +0,0 @@
-// -*- C++ -*-
-//===------------  support/xlocale/__nop_locale_mgmt.h -----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_XLOCALE_NOP_LOCALE_MGMT_H
-#define _LIBCPP_SUPPORT_XLOCALE_NOP_LOCALE_MGMT_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// Patch over lack of extended locale support
-typedef void *locale_t;
-static inline locale_t duplocale(locale_t) {
-  return NULL;
-}
-
-static inline void freelocale(locale_t) {
-}
-
-static inline locale_t newlocale(int, const char *, locale_t) {
-  return NULL;
-}
-
-static inline locale_t uselocale(locale_t) {
-  return NULL;
-}
-
-#define LC_COLLATE_MASK  (1 << LC_COLLATE)
-#define LC_CTYPE_MASK    (1 << LC_CTYPE)
-#define LC_MESSAGES_MASK (1 << LC_MESSAGES)
-#define LC_MONETARY_MASK (1 << LC_MONETARY)
-#define LC_NUMERIC_MASK  (1 << LC_NUMERIC)
-#define LC_TIME_MASK     (1 << LC_TIME)
-#define LC_ALL_MASK (LC_COLLATE_MASK|\
-                     LC_CTYPE_MASK|\
-                     LC_MONETARY_MASK|\
-                     LC_NUMERIC_MASK|\
-                     LC_TIME_MASK|\
-                     LC_MESSAGES_MASK)
-
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
-#endif // _LIBCPP_SUPPORT_XLOCALE_NOP_LOCALE_MGMT_H
diff --git a/include/support/xlocale/__posix_l_fallback.h b/include/support/xlocale/__posix_l_fallback.h
deleted file mode 100644
index b9a0939f8fa1c..0000000000000
--- a/include/support/xlocale/__posix_l_fallback.h
+++ /dev/null
@@ -1,165 +0,0 @@
-// -*- C++ -*-
-//===--------------- support/xlocale/__posix_l_fallback.h -----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-// These are reimplementations of some extended locale functions ( *_l ) that
-// are normally part of POSIX.  This shared implementation provides parts of the
-// extended locale support for libc's that normally don't have any (like
-// Android's bionic and Newlib).
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_XLOCALE_POSIX_L_FALLBACK_H
-#define _LIBCPP_SUPPORT_XLOCALE_POSIX_L_FALLBACK_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-inline _LIBCPP_INLINE_VISIBILITY int isalnum_l(int c, locale_t) {
-  return ::isalnum(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isalpha_l(int c, locale_t) {
-  return ::isalpha(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isblank_l(int c, locale_t) {
-  return ::isblank(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iscntrl_l(int c, locale_t) {
-  return ::iscntrl(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isdigit_l(int c, locale_t) {
-  return ::isdigit(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isgraph_l(int c, locale_t) {
-  return ::isgraph(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int islower_l(int c, locale_t) {
-  return ::islower(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isprint_l(int c, locale_t) {
-  return ::isprint(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int ispunct_l(int c, locale_t) {
-  return ::ispunct(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isspace_l(int c, locale_t) {
-  return ::isspace(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isupper_l(int c, locale_t) {
-  return ::isupper(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int isxdigit_l(int c, locale_t) {
-  return ::isxdigit(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswalnum_l(wint_t c, locale_t) {
-  return ::iswalnum(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswalpha_l(wint_t c, locale_t) {
-  return ::iswalpha(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswblank_l(wint_t c, locale_t) {
-  return ::iswblank(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswcntrl_l(wint_t c, locale_t) {
-  return ::iswcntrl(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswdigit_l(wint_t c, locale_t) {
-  return ::iswdigit(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswgraph_l(wint_t c, locale_t) {
-  return ::iswgraph(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswlower_l(wint_t c, locale_t) {
-  return ::iswlower(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswprint_l(wint_t c, locale_t) {
-  return ::iswprint(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswpunct_l(wint_t c, locale_t) {
-  return ::iswpunct(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswspace_l(wint_t c, locale_t) {
-  return ::iswspace(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswupper_l(wint_t c, locale_t) {
-  return ::iswupper(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int iswxdigit_l(wint_t c, locale_t) {
-  return ::iswxdigit(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int toupper_l(int c, locale_t) {
-  return ::toupper(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int tolower_l(int c, locale_t) {
-  return ::tolower(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY wint_t towupper_l(wint_t c, locale_t) {
-  return ::towupper(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY wint_t towlower_l(wint_t c, locale_t) {
-  return ::towlower(c);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int strcoll_l(const char *s1, const char *s2,
-                                               locale_t) {
-  return ::strcoll(s1, s2);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY size_t strxfrm_l(char *dest, const char *src,
-                                                  size_t n, locale_t) {
-  return ::strxfrm(dest, src, n);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY size_t strftime_l(char *s, size_t max,
-                                                   const char *format,
-                                                   const struct tm *tm, locale_t) {
-  return ::strftime(s, max, format, tm);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY int wcscoll_l(const wchar_t *ws1,
-                                               const wchar_t *ws2, locale_t) {
-  return ::wcscoll(ws1, ws2);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY size_t wcsxfrm_l(wchar_t *dest, const wchar_t *src,
-                                                  size_t n, locale_t) {
-  return ::wcsxfrm(dest, src, n);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // _LIBCPP_SUPPORT_XLOCALE_POSIX_L_FALLBACK_H
diff --git a/include/support/xlocale/__strtonum_fallback.h b/include/support/xlocale/__strtonum_fallback.h
deleted file mode 100644
index 50b4db354277c..0000000000000
--- a/include/support/xlocale/__strtonum_fallback.h
+++ /dev/null
@@ -1,67 +0,0 @@
-// -*- C++ -*-
-//===-------------- support/xlocale/__strtonum_fallback.h -----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-// These are reimplementations of some extended locale functions ( *_l ) that
-// aren't part of POSIX.  They are widely available though (GLIBC, BSD, maybe
-// others).  The unifying aspect in this case is that all of these functions
-// convert strings to some numeric type.
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_SUPPORT_XLOCALE_STRTONUM_FALLBACK_H
-#define _LIBCPP_SUPPORT_XLOCALE_STRTONUM_FALLBACK_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-inline _LIBCPP_INLINE_VISIBILITY float strtof_l(const char *nptr,
-                                                char **endptr, locale_t) {
-  return ::strtof(nptr, endptr);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY double strtod_l(const char *nptr,
-                                                 char **endptr, locale_t) {
-  return ::strtod(nptr, endptr);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY long double strtold_l(const char *nptr,
-                                                       char **endptr, locale_t) {
-  return ::strtold(nptr, endptr);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY long long
-strtoll_l(const char *nptr, char **endptr, int base, locale_t) {
-  return ::strtoll(nptr, endptr, base);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY unsigned long long
-strtoull_l(const char *nptr, char **endptr, int base, locale_t) {
-  return ::strtoull(nptr, endptr, base);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY long long
-wcstoll_l(const wchar_t *nptr, wchar_t **endptr, int base, locale_t) {
-  return ::wcstoll(nptr, endptr, base);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY unsigned long long
-wcstoull_l(const wchar_t *nptr, wchar_t **endptr, int base, locale_t) {
-  return ::wcstoull(nptr, endptr, base);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY long double wcstold_l(const wchar_t *nptr,
-                                                       wchar_t **endptr, locale_t) {
-  return ::wcstold(nptr, endptr);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // _LIBCPP_SUPPORT_XLOCALE_STRTONUM_FALLBACK_H
diff --git a/include/support/xlocale/xlocale.h b/include/support/xlocale/xlocale.h
deleted file mode 100644
index e69de29bb2d1d..0000000000000
--- a/include/support/xlocale/xlocale.h
+++ /dev/null