Test LB0021

PPC LB0021
"DpDatadW Rfe DpAddrdR DpDatadW Rfe"
Cycle=Rfe DpAddrdR DpDatadW Rfe DpDatadW
Relax=[Rfe,DpDatadW,Rfe]
Safe=DpAddrdR DpDatadW
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Rf
Orig=DpDatadW Rfe DpAddrdR DpDatadW Rfe
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r5=z; 1:r7=x;
}
 P0           | P1            ;
 lwz r1,0(r2) | lwz r1,0(r2)  ;
 xor r3,r1,r1 | xor r3,r1,r1  ;
 addi r3,r3,1 | lwzx r4,r3,r5 ;
 stw r3,0(r4) | xor r6,r4,r4  ;
              | addi r6,r6,1  ;
              | stw r6,0(r7)  ;
exists
(0:r1=1 /\ 1:r1=1)