https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120939
Bug ID: 120939
Summary: vect_need_peeling_or_partial_vectors_p accesses not
yet computed LOOP_VINFO_COST_MODEL_THRESHOLD
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
We use that as
/* In case of versioning, check if the maximum number of
iterations is greater than th. If they are identical,
the epilogue is unnecessary. */
&& (!LOOP_REQUIRES_VERSIONING (loop_vinfo)
|| ((unsigned HOST_WIDE_INT) max_niter
/* We'd like to use LOOP_VINFO_VERSIONING_THRESHOLD
but that's only computed later based on our result.
The following is the most conservative approximation. */
> (std::max ((unsigned HOST_WIDE_INT) th,
const_vf) / const_vf) * const_vf))))
where also noticable we compare with > and fail to honor
the "If they are identical, the epilogue is unnecessary."
