https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89754
Bug ID: 89754
Summary: Vectorizer cost model check should look at evolution
of niter in outer loop(s)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
For the testcase in PR87561 which has a loop nest iterating over a triangle
the vectorizer should take the evolution of the inner loop niter in the outer
loop into account for cost modeling and compute a cost model check for the
outer loop also applying cost model versioning to the outer loop instead of
the inner loop.
