public void lower(ArrayCopySlowPathNode arraycopy, LoweringTool tool) {
StructuredGraph graph = arraycopy.graph();
if (!graph.getGuardsStage().areFrameStatesAtDeopts()) {
// Can't be lowered yet
return;
}
SnippetInfo snippetInfo = arraycopy.getSnippet();
Arguments args = new Arguments(snippetInfo, graph.getGuardsStage(), tool.getLoweringStage());
args.add("nonNullSrc", arraycopy.getSource());
args.add("srcPos", arraycopy.getSourcePosition());
args.add("nonNullDest", arraycopy.getDestination());
args.add("destPos", arraycopy.getDestinationPosition());
if (snippetInfo == arraycopyUnrolledWorkSnippet) {
args.addConst("length", ((Integer) arraycopy.getArgument()).intValue());
args.addConst("elementKind", arraycopy.getElementKind());
} else {
args.add("length", arraycopy.getLength());
}
if (snippetInfo == arraycopyPredictedObjectWorkSnippet) {
HotSpotResolvedObjectType arrayKlass =
(HotSpotResolvedObjectType) tool.getMetaAccess().lookupJavaType(Object[].class);
ValueNode objectArrayKlass =
ConstantNode.forConstant(
KlassPointerStamp.klassNonNull(),
arrayKlass.klass(),
tool.getMetaAccess(),
arraycopy.graph());
args.add("objectArrayKlass", objectArrayKlass);
args.addConst("counter", arraycopyCallCounters.get(JavaKind.Object));
args.addConst("copiedCounter", arraycopyCallCopiedCounters.get(JavaKind.Object));
}
instantiate(args, arraycopy);
}
@Override
ConstantPool getConstantPool() {
HotSpotResolvedObjectType type =
HotSpotResolvedObjectType.fromObjectClass(OBJECT_TYPE_BASE.getClass());
long ptrToClass = UNSAFE.getKlassPointer(OBJECT_TYPE_BASE);
return CompilerToVMHelper.getConstantPool(type, getPtrToCpAddress() - ptrToClass);
}