https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108839
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Blocks| |53947
Last reconfirmed| |2023-02-20
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note the SLP loop vectorizer could be used to re-roll loops (for -Os?) by
vectorizing with one element vectors and a "fractional" VF. I just never got
around playing with this idea (even when actually vectorizing but facing
highly manually unrolled code vectorizing with a single vector and a
"fractional" VF might be worth it for example for register pressure reasons).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
