https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87914
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Blocks| |53947 Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Note that if that is fixed we still fail vectorization with t.C:8:21: missed: not vectorized: relevant stmt not supported: _16 = mask_26 << s_7; t.C:18:27: missed: bad operation or unsupported loop bound. I have a fix for that. But in the end the issue is weak handling of vectorized nested cycles in general. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 [Bug 53947] [meta-bug] vectorizer missed-optimizations