[Bug middle-end/95899] -funroll-loops does not duplicate accumulators when calculating reductions, failing to break up dependency chains

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95899

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The register allocator cannot always recover so it can lead to spilling.