Test m8

PPC m8  (PPCMEight)
"LD;ST || LD;ST, hexa version (d tests in @xx)"
{
P0:r4=x ; P0:r5=y ; P0:r2=1 ;
P1:r4=x ; P1:r5=y ; P1:r2=1 ;
P2:r4=x ; P3:r5=y ;
P2:r2=2 ; P3:r2=2 ;
}

P0           |P1           |P2           |P3           ;
lwz r1,0(r4) |lwz r1,0(r5) |stw r2,0(r4) |stw r2,0(r5) ;
stw r2,0(r5) |stw r2,0(r4) |             |             ;
Observed
    0:r1=1; 1:r1=1; x=1; y=1;
and 0:r1=1; 1:r1=1; x=2; y=1;
and 0:r1=1; 1:r1=1; x=1; y=2;
and 0:r1=1; 1:r1=1; x=2; y=2;