Test LB+addr+isyncrp

PPC LB+addr+isyncrp
"DpAddrdW RfePR ISyncdRWRP Rfe"
Cycle=Rfe DpAddrdW RfePR ISyncdRWRP
Prefetch=
Com=Rf Rf
Orig=DpAddrdW RfePR ISyncdRWRP Rfe
{
0:r2=x; 0:r5=y;
1:r2=y; 1:r4=x;
}
 P0            | P1             ;
 lwz r1,0(r2)  | lwarx r1,r0,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)