PPC S+rfipr-datarp+sync "RfiPR DpDatadWRP Rfe SyncdRW Wse" Prefetch=0:x=F,1:x=W Com=Rf Ws Orig=RfiPR DpDatadWRP Rfe SyncdRW Wse { 0:r2=x; 0:r5=y; 1:r2=y; 1:r4=x; } P0 | P1 ; li r1,2 | lwz r1,0(r2) ; stw r1,0(r2) | sync ; lwarx r3,r0,r2 | li r3,1 ; xor r4,r3,r3 | stw r3,0(r4) ; addi r4,r4,1 | ; stw r4,0(r5) | ; exists (x=2 /\ 0:r3=2 /\ 1:r1=1)