https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105139
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |12.0 Status|UNCONFIRMED |WAITING Last reconfirmed| |2022-04-04 Ever confirmed|0 |1 Target|X86_64 |x86_64-*-* --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- it works for me, it produces vmovw %xmm0, %xmm1 what assembler version are you using? I have 2.37