PPC safe187 "LwSyncdWW Rfe SyncsRW Rfe SyncdRR Fre LwSyncdWW Wse" Cycle=LwSyncdWW Rfe SyncsRW Rfe SyncdRR Fre LwSyncdWW Wse Relax= Safe=Fre Wse LwSyncdWW ACSyncsRW ACSyncdRR { 0:r2=x; 1:r2=x; 1:r4=y; 2:r2=y; 2:r4=z; 3:r2=z; 3:r4=x; } P0 | P1 | P2 | P3 ; lwz r1,0(r2) | lwz r1,0(r2) | li r1,1 | li r1,2 ; sync | sync | stw r1,0(r2) | stw r1,0(r2) ; li r3,2 | lwz r3,0(r4) | lwsync | lwsync ; stw r3,0(r2) | | li r3,1 | li r3,1 ; | | stw r3,0(r4) | stw r3,0(r4) ; Observed 0:r1=0; 1:r1=1; 1:r3=0; x=1; z=2; and 0:r1=0; 1:r1=1; 1:r3=0; x=2; z=2; and 0:r1=1; 1:r1=1; 1:r3=0; x=2; z=2; and 0:r1=0; 1:r1=2; 1:r3=0; x=2; z=2; and 0:r1=1; 1:r1=2; 1:r3=0; x=2; z=2;