Test LB+data+RDWI+addr+RW

PPC LB+data+RDWI+addr+RW
"PodRW Rfe DpDatadW Rfe Fri Rfi DpAddrdR"
Prefetch=
Com=Rf Rf
Orig=PodRW Rfe DpDatadW Rfe Fri Rfi DpAddrdR
{
0:r2=z; 0:r4=x;
1:r2=x; 1:r7=y; 1:r9=z;
}
 P0           | P1            ;
 lwz r1,0(r2) | lwz r1,0(r2)  ;
 xor r3,r1,r1 | li r3,2       ;
 addi r3,r3,1 | stw r3,0(r2)  ;
 stw r3,0(r4) | lwz r4,0(r2)  ;
              | xor r5,r4,r4  ;
              | lwzx r6,r5,r7 ;
              | li r8,1       ;
              | stw r8,0(r9)  ;
exists
(x=2 /\ 0:r1=1 /\ 1:r1=1 /\ 1:r4=2)