PPC SB+sync+lwsyncpa "SyncdWR Fre LwSyncdWRPA FreAP" Cycle=FreAP SyncdWR Fre LwSyncdWRPA Prefetch=0:y=T,1:x=T Com=Fr Fr Orig=SyncdWR Fre LwSyncdWRPA FreAP { ok=1; 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; li r1,1 | li r1,1 ; stw r1,0(r2) | stw r1,0(r2) ; sync | lwsync ; lwz r3,0(r4) | lwarx r3,r0,r4 ; | stwcx. r3,r0,r4 ; | bne Fail1 ; | b Exit1 ; | Fail1: ; | li r5,0 ; | stw r5,0(r6) ; | Exit1: ; exists (ok=1 /\ 0:r3=0 /\ 1:r3=0)