Test WRW+2W+addraa+popa

PPC WRW+2W+addraa+popa
"RfePA DpAddrdWAA WseAP PodWWPA WseAP"
Cycle=RfePA DpAddrdWAA WseAP PodWWPA WseAP
Prefetch=0:x=F,1:y=W,2:y=F,2:x=W
Com=Rf Ws Ws
Orig=RfePA DpAddrdWAA WseAP PodWWPA WseAP
{ ok=1;
0:r2=x;
1:r2=x; 1:r5=y; 1:r7=ok;
2:r2=y; 2:r4=x; 2:r6=ok;
}
 P0           | P1               | P2               ;
 li r1,2      | lwarx r1,r0,r2   | li r1,2          ;
 stw r1,0(r2) | stwcx. r1,r0,r2  | stw r1,0(r2)     ;
              | bne  Fail1       | li r3,1          ;
              | xor r3,r1,r1     | lwarx %sta,r0,r4 ;
              | li r4,1          | stwcx. r3,r0,r4  ;
              | lwarx %sta,r3,r5 | bne  Fail2       ;
              | stwcx. r4,r3,r5  | b   Exit2        ;
              | bne  Fail1       | Fail2:           ;
              | b   Exit1        | li r5,0          ;
              | Fail1:           | stw r5,0(r6)     ;
              | li r6,0          | Exit2:           ;
              | stw r6,0(r7)     |                  ;
              | Exit1:           |                  ;
exists
(ok=1 /\ x=2 /\ y=2 /\ 1:r1=2)