https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104188
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2022-01-22 Ever confirmed|0 |1 Keywords| |wrong-code --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- There is a broadcast as part of the other instruction, optimizing it correctly: vfmadd132ps 16(%rdx){1to16}, %zmm1, %zmm2 {1to16} says to broadcast from first element to all 16. Why do you think this is wrong code?