Test ppc-adir1

PPC ppc-adir1 (PPCAdirOne)
{
 P0:r1=1; P0:r2=2;
 P0:r5=x; P1:r5=x;
 P0:r6=y; P1:r6=y;
 x = 0; y = 0;
}

    P0           |      P1           ;
                 |                   ;
stw r1,0,r5  | lwz r3,0,r6   ;
sync         | sync              ;
stw r2,0,r6  | lwz r4,0,r5   ;

exists (1:r3=2 /\ 1:r4=0)
<<
genprog generated/ppc-adir1-prog.tex
show 0
essdump generated/ppc-adir1-ess.dot
>>
<<
show 0 of ess 0
show interesting true
readfrom generated/ppc-adir1-rf.dot
>>