/**
* 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 static void removeFixedWithUnusedInputs(FixedWithNextNode fixed) {
if (fixed instanceof StateSplit) {
FrameState stateAfter = ((StateSplit) fixed).stateAfter();
((StateSplit) fixed).setStateAfter(null);
if (stateAfter.usages().isEmpty()) {
killWithUnusedFloatingInputs(stateAfter);
}
}
unlinkFixedNode(fixed);
killWithUnusedFloatingInputs(fixed);
}
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);
}