Add support for aliases with linkonce_odr.
This will be used to extend constructor aliases in clang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192066 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LangRef.rst b/docs/LangRef.rst
index 4165a5b..6a78c14 100644
--- a/docs/LangRef.rst
+++ b/docs/LangRef.rst
@@ -614,6 +614,12 @@
@<Name> = alias [Linkage] [Visibility] <AliaseeTy> @<Aliasee>
+The linkgage must be one of ``private``, ``linker_private``,
+``linker_private_weak``, ``internal``, ``linkonce``, ``weak``,
+``linkonce_odr``, ``weak_odr``, ``linkonce_odr_auto_hide``, ``external``. Note
+that some system linkers might not correctly handle dropping a weak symbol that
+is aliased by a non weak alias.
+
.. _namedmetadatastructure:
Named Metadata