diff --git a/libcxx/docs/index.rst b/libcxx/docs/index.rst
--- a/libcxx/docs/index.rst
+++ b/libcxx/docs/index.rst
@@ -106,7 +106,7 @@
 ============ =============== ========================== =====================
 Compiler     Versions        Restrictions               Support policy
 ============ =============== ========================== =====================
-Clang        14, 15, 16-git                             latest two stable releases per `LLVM's release page <https://releases.llvm.org>`_ and the development version
+Clang        15, 16, 17-git                             latest two stable releases per `LLVM's release page <https://releases.llvm.org>`_ and the development version
 AppleClang   14                                         latest stable release per `Xcode's release page <https://developer.apple.com/documentation/xcode-release-notes>`_
 Open XL      17.1 (AIX)                                 latest stable release per `Open XL's documentation page <https://www.ibm.com/docs/en/openxl-c-and-cpp-aix>`_
 GCC          12              In C++11 or later only     latest stable release per `GCC's release page <https://gcc.gnu.org/releases.html>`_
diff --git a/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp b/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp
--- a/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp
+++ b/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp
@@ -12,9 +12,6 @@
 // GCC does not support the -fexperimental-library flag
 // UNSUPPORTED: gcc
 
-// Clang does not support the -fexperimental-library flag before LLVM 15.0
-// UNSUPPORTED: clang-14
-
 // AppleClang does not support the -fexperimental-library flag yet
 // UNSUPPORTED: apple-clang-14.0
 
diff --git a/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp b/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp
--- a/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp
+++ b/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp
@@ -12,7 +12,7 @@
 // UNSUPPORTED: c++03
 
 // TODO: Investigate these failures which break the CI.
-// UNSUPPORTED: clang-14, clang-15, clang-16, clang-17
+// UNSUPPORTED: clang-15, clang-16, clang-17
 
 // TODO: Investigate this failure on GCC 12 (in Ubuntu Jammy)
 // UNSUPPORTED: gcc-12
diff --git a/libcxx/test/std/language.support/support.srcloc/general.pass.cpp b/libcxx/test/std/language.support/support.srcloc/general.pass.cpp
--- a/libcxx/test/std/language.support/support.srcloc/general.pass.cpp
+++ b/libcxx/test/std/language.support/support.srcloc/general.pass.cpp
@@ -7,7 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17
-// UNSUPPORTED: clang-14, clang-15
+// UNSUPPORTED: clang-15
 // UNSUPPORTED: apple-clang-14
 
 #include <source_location>
diff --git a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr expected& operator=(const expected& rhs);
 //
diff --git a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr expected& operator=(expected&& rhs) noexcept(see below);
 //
diff --git a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class G>
 //   constexpr expected& operator=(const unexpected<G>& e);
diff --git a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class G>
 //   constexpr expected& operator=(unexpected<G>&& e);
diff --git a/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class... Args>
 //   constexpr T& emplace(Args&&... args) noexcept;
diff --git a/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class U, class... Args>
 //   constexpr explicit expected(in_place_t, initializer_list<U> il, Args&&... args);
diff --git a/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class U, class... Args>
 //   constexpr explicit expected(unexpect_t, initializer_list<U> il, Args&&... args);
diff --git a/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr ~expected();
 //
diff --git a/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp b/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, clang-15, apple-clang-14
+// XFAIL: clang-15, apple-clang-14
 
 // friend constexpr void swap(expected& x, expected& y) noexcept(noexcept(x.swap(y)));
 
diff --git a/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr expected& operator=(const expected& rhs);
 //
diff --git a/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr expected& operator=(expected&& rhs) noexcept(see below);
 //
diff --git a/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class G>
 //   constexpr expected& operator=(const unexpected<G>& e);
diff --git a/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class G>
 //   constexpr expected& operator=(unexpected<G>&& e);
diff --git a/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp
@@ -8,7 +8,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr void emplace() noexcept;
 //
diff --git a/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // template<class U, class... Args>
 //   constexpr explicit expected(unexpect_t, initializer_list<U> il, Args&&... args);
diff --git a/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr ~expected();
 //
diff --git a/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, clang-15, apple-clang-14
+// XFAIL: clang-15, apple-clang-14
 
 // friend constexpr void swap(expected& x, expected& y) noexcept(noexcept(swap(x,y)));
 
diff --git a/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp
--- a/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp
+++ b/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp
@@ -7,7 +7,7 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 // Older Clangs do not support the C++20 feature to constrain destructors
-// XFAIL: clang-14, apple-clang-14
+// XFAIL: apple-clang-14
 
 // constexpr void swap(expected& rhs) noexcept(see below);
 //
diff --git a/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp b/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp
--- a/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp
+++ b/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp
@@ -7,7 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
-// XFAIL: clang-14, clang-15, gcc-12, apple-clang-14
+// XFAIL: clang-15, gcc-12, apple-clang-14
 
 // checks that CTAD for std::function works properly with static operator() overloads
 
diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp
--- a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp
+++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp
@@ -7,7 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // Triggers a Clang assertion: llvm.org/PR45879
-// UNSUPPORTED: clang-14, clang-15
+// UNSUPPORTED: clang-15
 
 // <tuple>