Strip target_clones in copy attribute (PR lto/90500).

2019-05-22  Martin Liska  <mliska@suse.cz>

	PR lto/90500
	* c-attribs.c (handle_copy_attribute): Do not copy
	target_clones attribute.
2019-05-22  Martin Liska  <mliska@suse.cz>

	PR lto/90500
	* gcc.target/i386/pr90500-1.c: Make the test-case valid
	now.
2019-05-22  Martin Liska  <mliska@suse.cz>

	PR lto/90500
	* doc/extend.texi: Document the change.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@271504 138bc75d-0d04-0410-961f-82ee72b054a4
6 files changed