How can I exchange the middle two 64 bits in a 256 bit AVX(YMM) register

Question

Is there any way to exchange the middle two 64 bits in a 256 bit AVX(YMM) register?

I know we can leverage VPERM2F128 to swap the low 128 and high 128 bits, and vshufps seems could only work inside both high and low 128 bits.

So I am wondering is there any efficient instructions to work for this typical situation?

Thanks in advance!

Answer 1

Thank you all! I found AVX2 vpermq may well work for this.