compiler: Don't warn for unknown type when importing anonymous field.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203772 138bc75d-0d04-0410-961f-82ee72b054a4
[AArch64] Enable effective_target_sync_long_long*



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203773 138bc75d-0d04-0410-961f-82ee72b054a4
[AArch64] Enable building libatomic on AArch64.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203774 138bc75d-0d04-0410-961f-82ee72b054a4