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;
}
public LoopsData(final StructuredGraph graph) {
cfg =
Debug.scope(
"ControlFlowGraph",
new Callable<ControlFlowGraph>() {
@Override
public ControlFlowGraph call() throws Exception {
return ControlFlowGraph.compute(graph, true, true, true, true);
}
});
for (Loop lirLoop : cfg.getLoops()) {
LoopEx ex = new LoopEx(lirLoop, this);
lirLoopToEx.put(lirLoop, ex);
loopBeginToEx.put(ex.loopBegin(), ex);
}
}
public Collection<LoopEx> loops() {
return lirLoopToEx.values();
}
public LoopEx loop(LoopBeginNode loopBegin) {
return loopBeginToEx.get(loopBegin);
}
public LoopEx loop(Loop lirLoop) {
return lirLoopToEx.get(lirLoop);
}