[Bug middle-end/80283] [5/6/7 Regression] bad SIMD register allocation

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80283

--- Comment #7 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Well, I've made a small tweak to the patch I have for PR78972, and I've got
what at a glance looks like optimal code (no spills).