https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97127
--- Comment #17 from Alexander Monakov <amonakov at gcc dot gnu.org> --- To me this suggests that in fact it's okay to carry the combined form in RTL up to register allocation, but RA should decompose it to load+fma instead of inserting a register copy that preserves the live operand. (not a fan of "RA should deal with it" theme, but here it does look like the most appropriate resolution)
