* attribs.c (handle_noinline_attribute): New function.
(handle_used_attribute): Likewise.
(c_common_attribute_table): Added noinline and used.
* doc/extend.texi (Function Attributes): Document them.
* c-decl.c (duplicate_decls): Propagate DECL_UNINLINABLE.
Warn when merging inline with attribute noinline.
(start_decl, start_function): Warn if inline and attribute
noinline appear in the same declaration.

From-SVN: r46334