https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112787
avieira at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |avieira at gcc dot
gnu.org
Last reconfirmed| |2023-11-30
Target| |aarch64
--- Comment #1 from avieira at gcc dot gnu.org ---
The problem is veclower tries to find the largest vector type it can use for a
particular element type, which when SVE is enabled without a specified vector
length will always be a VLA type. This then fails the check of it having less
elements than the type being used to do the computation, given that a VLA
element count is never 'known_lt' a constant one.
I am currently testing a patch that makes sure the mode selected does not have
more elements than the type we are trying to compute, given that it wouldn't be
used anyway.
