[Bug target/108532] march used on the object but mcpu conflicts still produces an warning with LTO

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108532

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
With streamable flags produced by the object files I wonder if it makes sense
to drop linker target arguments on the floor?  (they'd be effectively ignored
anyway in some way)