https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49498
--- Comment #28 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Jeffrey A. Law from comment #27) > Must. Read. dg-comments in testcase. More. Carefully. > > > This was actually fixed a couple years ago with some pass ordering changes. > The testsuite hack mentioned in c#12 is no longer needed. Hmm, note the report states it worked on x86_64/i586/arm anyway and only some other archs were broken. Did you verify any of those? Iff it's really fixed we should remove the testcase workaround (enable DOM again). A quick check on avr doesn't reproduce the issue when re-enabling DOM.