uu&=~(1LL<<us2[i]);
gte_u&=~gte_rs[i];
if(gte_rs[i]&&rt1[i]&&(unneeded_reg[i+1]&(1ll<<rt1[i])))
- gte_u|=gte_rs[i]; // MFC2/CFC2 to dead register, unneeded
+ gte_u|=gte_rs[i]>e_unneeded[i+1]; // MFC2/CFC2 to dead register, unneeded
// Source-target dependencies
uu&=~(tdep<<dep1[i]);
uu&=~(tdep<<dep2[i]);