@Override
public GuardingNode createGuard(
FixedNode before,
LogicNode condition,
DeoptimizationReason deoptReason,
DeoptimizationAction action,
JavaConstant speculation,
boolean negated) {
if (OptEliminateGuards.getValue()) {
for (Node usage : condition.usages()) {
if (!activeGuards.isNew(usage)
&& activeGuards.isMarked(usage)
&& ((GuardNode) usage).isNegated() == negated) {
return (GuardNode) usage;
}
}
}
StructuredGraph graph = before.graph();
if (!condition.graph().getGuardsStage().allowsFloatingGuards()) {
FixedGuardNode fixedGuard =
graph.add(new FixedGuardNode(condition, deoptReason, action, speculation, negated));
graph.addBeforeFixed(before, fixedGuard);
DummyGuardHandle handle = graph.add(new DummyGuardHandle(fixedGuard));
fixedGuard.lower(this);
GuardingNode result = handle.getGuard();
handle.safeDelete();
return result;
} else {
GuardNode newGuard =
graph.unique(
new GuardNode(condition, guardAnchor, deoptReason, action, negated, speculation));
if (OptEliminateGuards.getValue()) {
activeGuards.markAndGrow(newGuard);
}
return newGuard;
}
}
