Test LB0042

PPC LB0042
"DpDatadW Rfe PosRR DpAddrdR DpCtrldW Rfe"
Cycle=Rfe PosRR DpAddrdR DpCtrldW Rfe DpDatadW
Relax=[Rfe,DpDatadW,Rfe]
Safe=PosRR DpAddrdR DpCtrldW
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Rf
Orig=DpDatadW Rfe PosRR DpAddrdR DpCtrldW Rfe
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r6=z; 1:r8=x;
}
 P0           | P1            ;
 lwz r1,0(r2) | lwz r1,0(r2)  ;
 xor r3,r1,r1 | lwz r3,0(r2)  ;
 addi r3,r3,1 | xor r4,r3,r3  ;
 stw r3,0(r4) | lwzx r5,r4,r6 ;
              | cmpw r5,r5    ;
              | beq  LC00     ;
              | LC00:         ;
              | li r7,1       ;
              | stw r7,0(r8)  ;
exists
(0:r1=1 /\ 1:r1=1)