Executions for behaviour:
"0:r1=1 ; 1:r1=1 ; ok=1"
PPC LB+datara+isyncra "DpDatadWRA RfeAR ISyncdRWRA RfeAR" Cycle=RfeAR ISyncdRWRA RfeAR DpDatadWRA Prefetch= Com=Rf Rf Orig=DpDatadWRA RfeAR ISyncdRWRA RfeAR { ok=1; 0:r2=x; 0:r4=y; 0:r6=ok; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; lwarx r1,r0,r2 | lwarx r1,r0,r2 ; xor r3,r1,r1 | isync ; addi r3,r3,1 | li r3,1 ; lwarx %sta,r0,r4 | lwarx %sta,r0,r4 ; stwcx. r3,r0,r4 | stwcx. r3,r0,r4 ; bne Fail0 | bne Fail1 ; b Exit0 | b Exit1 ; Fail0: | Fail1: ; li r5,0 | li r5,0 ; stw r5,0(r6) | stw r5,0(r6) ; Exit0: | Exit1: ; Observed 0:r1=1; 1:r1=1; ok=1;