The merge depends on the value of bit 26 in GPR RB . The rotated word is then merged with the contents of the MQ Register under the control of this generated mask.
N zeros is generated.
A word of zeros is then merged with the contents of the MQ Register under the control of this generated mask. The resulting merged word is stored in GPR RA . The MQ Register is not altered. The sllq instruction has two syntax forms. Each syntax form has a different effect on Condition Register Field 0.