https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48691
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I think this was fixed in GCC 11.
[Bug driver/48691] Assembler file clobbered with -save-temps (LTO)
pinskia at gcc dot gnu.org via Gcc-bugs Sat, 27 Nov 2021 20:56:12 -0800
