public void replaceSplitWithFixed(
ControlSplitNode node, FixedWithNextNode replacement, AbstractBeginNode survivingSuccessor) {
assert node != null && replacement != null && node.isAlive() && replacement.isAlive()
: "cannot replace " + node + " with " + replacement;
assert survivingSuccessor != null;
node.clearSuccessors();
replacement.setNext(survivingSuccessor);
node.replaceAndDelete(replacement);
}
/**
* Unlinks a node from all its control flow neighbors and then removes it from its graph. The node
* must have no {@linkplain Node#usages() usages}.
*
* @param node the node to be unlinked and removed
*/
public void removeFixed(FixedWithNextNode node) {
assert node != null;
if (node instanceof AbstractBeginNode) {
((AbstractBeginNode) node).prepareDelete();
}
assert node.hasNoUsages() : node + " " + node.usages().count() + ", " + node.usages().first();
GraphUtil.unlinkFixedNode(node);
node.safeDelete();
}
public void addBeforeFixed(FixedNode node, FixedWithNextNode newNode) {
assert node != null && newNode != null && node.isAlive() && newNode.isAlive()
: "cannot add " + newNode + " before " + node;
assert node.predecessor() != null && node.predecessor() instanceof FixedWithNextNode
: "cannot add " + newNode + " before " + node;
assert newNode.next() == null : newNode;
assert !(node instanceof AbstractMergeNode);
FixedWithNextNode pred = (FixedWithNextNode) node.predecessor();
pred.setNext(newNode);
newNode.setNext(node);
}
public void replaceFixedWithFixed(FixedWithNextNode node, FixedWithNextNode replacement) {
assert node != null && replacement != null && node.isAlive() && replacement.isAlive()
: "cannot replace " + node + " with " + replacement;
FixedNode next = node.next();
node.setNext(null);
replacement.setNext(next);
node.replaceAndDelete(replacement);
if (node == start) {
setStart((StartNode) replacement);
}
}
public void addAfterFixed(FixedWithNextNode node, FixedNode newNode) {
assert node != null && newNode != null && node.isAlive() && newNode.isAlive()
: "cannot add " + newNode + " after " + node;
FixedNode next = node.next();
node.setNext(newNode);
if (next != null) {
assert newNode instanceof FixedWithNextNode;
FixedWithNextNode newFixedWithNext = (FixedWithNextNode) newNode;
assert newFixedWithNext.next() == null;
newFixedWithNext.setNext(next);
}
}
public void replaceFixedWithFloating(FixedWithNextNode node, FloatingNode replacement) {
assert node != null && replacement != null && node.isAlive() && replacement.isAlive()
: "cannot replace " + node + " with " + replacement;
GraphUtil.unlinkFixedNode(node);
node.replaceAtUsagesAndDelete(replacement);
}
public static void unlinkFixedNode(FixedWithNextNode fixed) {
assert fixed.next() != null && fixed.predecessor() != null && fixed.isAlive();
FixedNode next = fixed.next();
fixed.setNext(null);
fixed.replaceAtPredecessor(next);
}