Test LB+addrrp+isync

PPC LB+addrrp+isync
"DpAddrdWRP Rfe ISyncdRW RfePR"
Cycle=Rfe ISyncdRW RfePR DpAddrdWRP
Prefetch=
Com=Rf Rf
Orig=DpAddrdWRP Rfe ISyncdRW RfePR
{
0:r2=x; 0:r5=y;
1:r2=y; 1:r4=x;
}
 P0             | P1           ;
 lwarx r1,r0,r2 | lwz r1,0(r2) ;
 xor r3,r1,r1   | isync        ;
 li r4,1        | li r3,1      ;
 stwx r4,r3,r5  | stw r3,0(r4) ;
exists
(0:r1=1 /\ 1:r1=1)