private void visitForward(NodeBitMap visited, Node node) { if (node != null && !visited.isMarked(node)) { visited.mark(node); if (node.predecessor() != null) { visitForward(visited, node.predecessor()); } if (node instanceof MergeNode) { // make sure that the cfg predecessors of a MergeNode are processed first MergeNode merge = (MergeNode) node; for (int i = 0; i < merge.forwardEndCount(); i++) { visitForward(visited, merge.forwardEndAt(i)); } } for (Node input : node.inputs()) { visitForward(visited, input); } if (node instanceof LoopBeginNode) { LoopBeginNode loopBegin = (LoopBeginNode) node; for (LoopEndNode loopEnd : loopBegin.loopEnds()) { visitForward(visited, loopEnd); } } nodes.add(node); } }
public static void killWithUnusedFloatingInputs(Node node) { List<Node> floatingInputs = node.inputs().filter(isFloatingNode()).snapshot(); node.safeDelete(); for (Node in : floatingInputs) { if (in.isAlive() && in.usages().isEmpty()) { killWithUnusedFloatingInputs(in); } } }