// Only do work here if there the PHI nodes are missing incoming values. We
// know that all PHI nodes that were inserted in a block will have the same
// number of incoming values, so we can just check any PHI node.
- PHINode *FirstPHI = PNs[0];
+ PHINode *FirstPHI;
+ for (unsigned i = 0; (FirstPHI = PNs[i]) == 0; ++i)
+ /*empty*/;
+
if (Preds.size() != FirstPHI->getNumIncomingValues()) {
// Ok, now we know that all of the PHI nodes are missing entries for some
// basic blocks. Start by sorting the incoming predecessors for efficient