https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63995
--- Comment #2 from Ilya Enkovich <enkovich.gnu at gmail dot com> --- I had a successful bootstrap with instrumentation some time ago but it's not performed regularly. We are extending regression testing for instrumentation now and coverage should become better. This particular problem may be caused by multiple varpool_node for the same var. Will check it.
