- F->insert(It, loop);
- F->insert(It, finish);
-
- // Update machine-CFG edges by first adding all successors of the current
- // block to the new block which will contain the Phi node for the select.
- for(MachineBasicBlock::succ_iterator i = BB->succ_begin(),
- e = BB->succ_end(); i != e; ++i)
- finish->addSuccessor(*i);
-
- // Next, remove all successors of the current block, and add the true
- // and fallthrough blocks as its successors.
- while(!BB->succ_empty())
- BB->removeSuccessor(BB->succ_begin());
- BB->addSuccessor(loop);
- BB->addSuccessor(finish);
-
- // Next, add the finish block as a successor of the loop block
- loop->addSuccessor(finish);
- loop->addSuccessor(loop);
-