[libc++] Implement P1007R3: std::assume_aligned
This supersedes and incoroporates content from both D108906 and D54966,
and also some original content.
Co-Authored-by: Marshall Clow <mclow.lists@gmail.com>
Co-Authored-by: Gonzalo Brito Gadeschi
Differential Revision: https://reviews.llvm.org/D118938
NOKEYCHECK=True
GitOrigin-RevId: c292b6066ccaef927ba9e129604f7cfb4f14a79c
diff --git a/docs/FeatureTestMacroTable.rst b/docs/FeatureTestMacroTable.rst
index fa5dcb1..792bbd0 100644
--- a/docs/FeatureTestMacroTable.rst
+++ b/docs/FeatureTestMacroTable.rst
@@ -170,7 +170,7 @@
-------------------------------------------------------------------
``__cpp_lib_array_constexpr`` ``201811L``
------------------------------------------------- -----------------
- ``__cpp_lib_assume_aligned`` *unimplemented*
+ ``__cpp_lib_assume_aligned`` ``201811L``
------------------------------------------------- -----------------
``__cpp_lib_atomic_flag_test`` ``201907L``
------------------------------------------------- -----------------