https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90913
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Aww. OK, so this is when we vectorize the inner loop of an if-converted
outer-loop, then the outer loop LOOP_VECTORIZED condition replaced with the
versioning condition dispatches to the variant supposed to be _scalar_ and the
fallback
is the if-converted nested copy designed for vectorization.
So re-using the if-conversion copy is only possible when loop_to_version is
the inner loop or we are vectorizing the outer loop (I think we never do
versioning on outer loops currently though).
Testing patch.
