[Bug target/65951] [AArch64] Will not vectorize 64bit integer multiplication

[wilson at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65951

--- Comment #8 from Jim Wilson <wilson at gcc dot gnu.org> ---
Created attachment 38397
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38397&action=edit
patch to use synth_mult to generate vector multiplies