// Is it alive in this successor?
unsigned SuccIdx = SuccMBB->getNumber();
- if (SuccIdx < InRegVI.AliveBlocks.size() &&
- InRegVI.AliveBlocks[SuccIdx]) {
+ if (InRegVI.AliveBlocks.test(SuccIdx)) {
ValueIsLive = true;
break;
}
// This vreg no longer lives all of the way through opBlock.
unsigned opBlockNum = opBlock.getNumber();
- if (opBlockNum < InRegVI.AliveBlocks.size())
- InRegVI.AliveBlocks[opBlockNum] = false;
+ InRegVI.AliveBlocks.reset(opBlockNum);
}
}