PPC safe354 "SyncdWW Rfe SyncsRW Rfe SyncdRW Rfe DpsR Fre" Cycle=SyncdWW Rfe SyncsRW Rfe SyncdRW Rfe DpsR Fre Relax= Safe=Fre DpsR BCSyncsRW BCSyncdWW BCSyncdRW { 0:r2=x; 1:r2=x; 1:r4=y; 2:r2=y; 3:r2=y; 3:r4=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) | li r1,2 ; sync | sync | xor r3,r1,r1 | stw r1,0(r2) ; li r3,2 | li r3,1 | lwzx r4,r3,r2 | sync ; stw r3,0(r2) | stw r3,0(r4) | | li r3,1 ; | | | stw r3,0(r4) ; exists (x=2 /\ y=2 /\ 0:r1=1 /\ 1:r1=2 /\ 2:r1=1 /\ 2:r4=1)