[Bug tree-optimization/107868] [10 regression] Wrong code on AArch64 at -O1 with new/delete

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107868

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can confirm backporting the two revs fixes the -O1 execute FAIL of
20_util/allocator/1.cc on the branch.  Fully testing that now.