private StructuredGraph parseAndProcess(String snippet) {
StructuredGraph graph = parse(snippet);
LocalNode local = graph.getNodes(LocalNode.class).first();
ConstantNode constant = ConstantNode.forInt(0, graph);
for (Node n : local.usages().filter(isNotA(FrameState.class)).snapshot()) {
n.replaceFirstInput(local, constant);
}
Map<Invoke, Double> hints = new HashMap<>();
for (Invoke invoke : graph.getInvokes()) {
hints.put(invoke, 1000d);
}
Assumptions assumptions = new Assumptions(false);
new InliningPhase(
runtime(),
hints,
replacements,
assumptions,
null,
getDefaultPhasePlan(),
OptimisticOptimizations.ALL)
.apply(graph);
new CanonicalizerPhase.Instance(runtime(), assumptions, true).apply(graph);
new DeadCodeEliminationPhase().apply(graph);
return graph;
}
private static void killEnd(AbstractEndNode end) {
MergeNode merge = end.merge();
if (merge != null) {
merge.removeEnd(end);
StructuredGraph graph = end.graph();
if (merge instanceof LoopBeginNode && merge.forwardEndCount() == 0) { // dead loop
for (PhiNode phi : merge.phis().snapshot()) {
propagateKill(phi);
}
LoopBeginNode begin = (LoopBeginNode) merge;
// disconnect and delete loop ends & loop exits
for (LoopEndNode loopend : begin.loopEnds().snapshot()) {
loopend.predecessor().replaceFirstSuccessor(loopend, null);
loopend.safeDelete();
}
begin.removeExits();
FixedNode loopBody = begin.next();
if (loopBody != null) { // for small infinite loops, the body may be killed while
// killing the loop ends
killCFG(loopBody);
}
begin.safeDelete();
} else if (merge instanceof LoopBeginNode
&& ((LoopBeginNode) merge).loopEnds().isEmpty()) { // not
// a
// loop
// anymore
graph.reduceDegenerateLoopBegin((LoopBeginNode) merge);
} else if (merge.phiPredecessorCount() == 1) { // not a merge anymore
graph.reduceTrivialMerge(merge);
}
}
}
@Test
public void test2() {
StructuredGraph graph = parseAndProcess("test2Snippet");
NodeIterable<MonitorExitNode> monitors = graph.getNodes(MonitorExitNode.class);
Assert.assertEquals(1, monitors.count());
Assert.assertEquals(monitors.first().stateAfter().bci, 3);
}