https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99397
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |tree-optimization
Keywords| |missed-optimization
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-03-05
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
That's the long-standing issue of dependence analysis not handling mixed
array and pointer access forms which means we miss distance zero computation
and handling here.
There's a duplicate for this.
The mitigiation is to "try again" with the array access demoted to a
pointer-based access (thus, analyze some alternative DR and see if dependence
analysis
can handle that).
