PPC safe347 "SyncdWW Rfe SyncsRR Fre SyncdWW Rfe DpsR Fre" Cycle=SyncdWW Rfe SyncsRR Fre SyncdWW Rfe DpsR Fre Relax= Safe=Fre SyncsRR DpsR BCSyncdWW { 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) | li r1,2 | lwz r1,0(r2) | li r1,2 ; sync | stw r1,0(r2) | xor r3,r1,r1 | stw r1,0(r2) ; lwz r3,0(r2) | sync | lwzx r4,r3,r2 | sync ; | li r3,1 | | li r3,1 ; | stw r3,0(r4) | | stw r3,0(r4) ; exists (x=2 /\ y=2 /\ 0:r1=1 /\ 0:r3=1 /\ 2:r1=1 /\ 2:r4=1)