[libc++] Add FTM for views::as_rvalue

`views::as_rvalue` was implemented in D137637, but we forgot to set the feature test macro.
Fixes #60986.

Reviewed By: Mordante, #libc

Spies: libcxx-commits, arichardson

Differential Revision: https://reviews.llvm.org/D144781

(cherry picked from commit 3d4b7a6)

libcxx/docs/FeatureTestMacroTable.rst

@@ -332,6 +332,8 @@ Status
     ------------------------------------------------- -----------------
     ``__cpp_lib_out_ptr``                             *unimplemented*
     ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_as_rvalue``                    ``202207L``
+    ------------------------------------------------- -----------------
     ``__cpp_lib_ranges_chunk``                        *unimplemented*
     ------------------------------------------------- -----------------
     ``__cpp_lib_ranges_chunk_by``                     *unimplemented*

libcxx/include/version

@@ -139,6 +139,7 @@ __cpp_lib_polymorphic_allocator                         201902L <memory_resource
 __cpp_lib_quoted_string_io                              201304L <iomanip>
 __cpp_lib_ranges                                        202106L <algorithm> <functional> <iterator>
                                                                 <memory> <ranges>
+__cpp_lib_ranges_as_rvalue                              202207L <ranges>
 __cpp_lib_ranges_chunk                                  202202L <ranges>
 __cpp_lib_ranges_chunk_by                               202202L <ranges>
 __cpp_lib_ranges_iota                                   202202L <numeric>
@@ -401,6 +402,7 @@ __cpp_lib_void_t                                        201411L <type_traits>
 # undef  __cpp_lib_optional
 # define __cpp_lib_optional                             202110L
 // # define __cpp_lib_out_ptr                              202106L
+# define __cpp_lib_ranges_as_rvalue                     202207L
 // # define __cpp_lib_ranges_chunk                         202202L
 // # define __cpp_lib_ranges_chunk_by                      202202L
 // # define __cpp_lib_ranges_iota                          202202L

libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.compile.pass.cpp

@@ -17,6 +17,7 @@
 
 /*  Constant                      Value
     __cpp_lib_ranges              202106L [C++20]
+    __cpp_lib_ranges_as_rvalue    202207L [C++2b]
     __cpp_lib_ranges_chunk        202202L [C++2b]
     __cpp_lib_ranges_chunk_by     202202L [C++2b]
     __cpp_lib_ranges_join_with    202202L [C++2b]
@@ -33,6 +34,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -59,6 +64,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -85,6 +94,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -114,6 +127,10 @@
 #   error "__cpp_lib_ranges should have the value 202106L in c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -143,6 +160,13 @@
 #   error "__cpp_lib_ranges should have the value 202106L in c++2b"
 # endif
 
+# ifndef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges_as_rvalue != 202207L
+#   error "__cpp_lib_ranges_as_rvalue should have the value 202207L in c++2b"
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_ranges_chunk
 #     error "__cpp_lib_ranges_chunk should be defined in c++2b"

libcxx/test/std/language.support/support.limits/support.limits.general/version.version.compile.pass.cpp

@@ -128,6 +128,7 @@
     __cpp_lib_polymorphic_allocator                201902L [C++20]
     __cpp_lib_quoted_string_io                     201304L [C++14]
     __cpp_lib_ranges                               202106L [C++20]
+    __cpp_lib_ranges_as_rvalue                     202207L [C++2b]
     __cpp_lib_ranges_chunk                         202202L [C++2b]
     __cpp_lib_ranges_chunk_by                      202202L [C++2b]
     __cpp_lib_ranges_iota                          202202L [C++2b]
@@ -621,6 +622,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -1295,6 +1300,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -2134,6 +2143,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -3240,6 +3253,10 @@
 #   error "__cpp_lib_ranges should have the value 202106L in c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ranges_chunk
 #   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
 # endif
@@ -4505,6 +4522,13 @@
 #   error "__cpp_lib_ranges should have the value 202106L in c++2b"
 # endif
 
+# ifndef __cpp_lib_ranges_as_rvalue
+#   error "__cpp_lib_ranges_as_rvalue should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges_as_rvalue != 202207L
+#   error "__cpp_lib_ranges_as_rvalue should have the value 202207L in c++2b"
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_ranges_chunk
 #     error "__cpp_lib_ranges_chunk should be defined in c++2b"

libcxx/utils/generate_feature_test_macro_components.py

@@ -536,6 +536,10 @@ def add_version_header(tc):
     "name": "__cpp_lib_ranges",
     "values": { "c++20": 202106 },
     "headers": ["algorithm", "functional", "iterator", "memory", "ranges"],
+  }, {
+    "name": "__cpp_lib_ranges_as_rvalue",
+    "values": { "c++2b": 202207 },
+    "headers": ["ranges"],
   }, {
     "name": "__cpp_lib_ranges_chunk",
     "values": { "c++2b": 202202 },