Test DETOUR1274

PPC DETOUR1274
"LwSyncdWW Wse Rfi DpAddrdR DpCtrldW Wse"
Cycle=Rfi DpAddrdR DpCtrldW Wse LwSyncdWW Wse
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Ws Ws
Orig=LwSyncdWW Wse Rfi DpAddrdR DpCtrldW Wse
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r6=z; 1:r8=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      | 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
(y=2 /\ x=2 /\ 1:r3=2)