Test MP+sync+rs

Run MP+sync+rs in model, using ppcmem

PPC MP+sync+rs
"register shadowing that works?"
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=x;
}
 P0           | P1           ;
 li r1,1      | lwz r3,0(r2) ;
 stw r1,0(r2) | mr r1,r3     ;
 sync         | lwz r3,0(r4) ;
 li r3,1      |              ;
 stw r3,0(r4) |              ;
exists (1:r1=1 /\ 1:r3=0)