Test DETOUR1271

PPC DETOUR1271
"LwSyncdWW Wse PosWR Fri Rfi DpCtrldW Wse"
Cycle=Rfi DpCtrldW Wse LwSyncdWW Wse PosWR Fri
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Ws Ws
Orig=LwSyncdWW Wse PosWR Fri Rfi DpCtrldW Wse
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r7=x;
}
 P0           | P1           ;
 li r1,2      | li r1,2      ;
 stw r1,0(r2) | stw r1,0(r2) ;
 lwsync       | lwz r3,0(r2) ;
 li r3,1      | li r4,3      ;
 stw r3,0(r4) | stw r4,0(r2) ;
 sync         | lwz r5,0(r2) ;
 lwz r5,0(r4) | cmpw r5,r5   ;
              | beq  LC00    ;
              | LC00:        ;
              | li r6,1      ;
              | stw r6,0(r7) ;
Observed
    0:r5=2; 1:r3=2; 1:r5=3; x=2;