https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70696
--- Comment #2 from Damian Rouson <damian at sourceryinstitute dot org> --- If I recall correctly, support for events just barely missed being included in 5.3, but will appear versions 5.4 and higher. There probably is no reason way to port this back to the 4.9 branch because versions earlier than 5.0 could not support producing multi-image executables and events only make sense in a multi-image setting.
