Which is better?

1)  LM 3,5,=A(value1,value2,value3)

2)
LHI 3,value1
LHI 4,value2
LHI 5,value3

Options 1 and 2 means regs 3 thrugh 5 are saved and restored.  The 
values are used in RR instructions and are not altered.  Reg 4 is used
twice, regs 3 and 5 are used once

3) D w,=A(value1)
    N x,=A(value2)
    N y,=A(value2)
    D z,=A(value3)

This option means regs 3 through 5 do not have to be saved and restored.