sum of xmm register

[jack]

suppose that xmm0 has 4 floats, how would you sum-up the values into the lowest part of xmm0 ?
pseudo code xmm0\0 = xmm0\0 + xmm0\1 + xmm0\2 + xmm0\3
and likewise if xmm0 had 2 doubles

// Moved from "Coding Questions" to "Assembly Programming" (Kiffi)

[STARGÅTE]

https://www.felixcloutier.com/x86/haddps

Code: Select all

! HADDPS  xmm0, xmm0
! HADDPS  xmm0, xmm0

[jack]

thanks STARGÅTE
I was hoping for a single instruction