Test LB+addr+pora

PPC LB+addr+pora
"DpAddrdW RfePR PodRWRA RfeAP"
Cycle=RfeAP DpAddrdW RfePR PodRWRA
Prefetch=
Com=Rf Rf
Orig=DpAddrdW RfePR PodRWRA RfeAP
{ ok=1;
0:r2=x; 0:r5=y;
1:r2=y; 1:r4=x; 1:r6=ok;
}
 P0            | P1               ;
 lwz r1,0(r2)  | lwarx r1,r0,r2   ;
 xor r3,r1,r1  | li r3,1          ;
 li r4,1       | lwarx %sta,r0,r4 ;
 stwx r4,r3,r5 | stwcx. r3,r0,r4  ;
               | bne  Fail1       ;
               | b   Exit1        ;
               | Fail1:           ;
               | li r5,0          ;
               | stw r5,0(r6)     ;
               | Exit1:           ;
exists
(ok=1 /\ 0:r1=1 /\ 1:r1=1)