https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113295
--- Comment #2 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
bisected to
commit g:2f46e3578d45ff060a0a329cb39d4f52878f9d5a
Author: Richard Sandiford <richard.sandif...@arm.com>
Date: Thu Dec 14 13:46:16 2023 +0000
aarch64: Improve handling of accumulators in early-ra
Being very simplistic, early-ra just models an allocno's live range
as a single interval. This doesn't work well for single-register
accumulators that are updated multiple times in a loop, since in
and it still seems to be miscomparing today.
