[Bug rtl-optimization/125988] `store_bit_field_1` drops insertion into multi-register vector destination with -O3 -favoid-store-forwarding

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125988

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
That is does fno-strict-alaising work?