/**
* Instantiate the snippet template and fix up the FrameState of any Invokes of System.arraycopy
* and propagate the captured bci in the ArrayCopySlowPathNode.
*
* @param args
* @param arraycopy
*/
private void instantiate(Arguments args, BasicArrayCopyNode arraycopy) {
StructuredGraph graph = arraycopy.graph();
SnippetTemplate template = template(args);
Map<Node, Node> replacements =
template.instantiate(
providers.getMetaAccess(), arraycopy, SnippetTemplate.DEFAULT_REPLACER, args);
for (Node originalNode : replacements.keySet()) {
if (originalNode instanceof Invoke) {
Invoke invoke = (Invoke) replacements.get(originalNode);
assert invoke.asNode().graph() == graph;
CallTargetNode call = invoke.callTarget();
if (!call.targetMethod().equals(originalArraycopy)) {
throw new GraalError("unexpected invoke %s in snippet", call.targetMethod());
}
// Here we need to fix the bci of the invoke
InvokeNode newInvoke = graph.add(new InvokeNode(invoke.callTarget(), arraycopy.getBci()));
if (arraycopy.stateDuring() != null) {
newInvoke.setStateDuring(arraycopy.stateDuring());
} else {
assert arraycopy.stateAfter() != null;
newInvoke.setStateAfter(arraycopy.stateAfter());
}
graph.replaceFixedWithFixed((InvokeNode) invoke.asNode(), newInvoke);
} else if (originalNode instanceof ArrayCopySlowPathNode) {
ArrayCopySlowPathNode slowPath = (ArrayCopySlowPathNode) replacements.get(originalNode);
assert arraycopy.stateAfter() != null;
slowPath.setStateAfter(arraycopy.stateAfter());
slowPath.setBci(arraycopy.getBci());
}
}
}
public static JavaKind selectComponentKind(BasicArrayCopyNode arraycopy, boolean exact) {
ResolvedJavaType srcType = StampTool.typeOrNull(arraycopy.getSource().stamp());
ResolvedJavaType destType = StampTool.typeOrNull(arraycopy.getDestination().stamp());
if (srcType == null || !srcType.isArray() || destType == null || !destType.isArray()) {
if (!exact) {
JavaKind component = getComponentKind(srcType);
if (component != null) {
return component;
}
return getComponentKind(destType);
}
return null;
}
if (exact) {
if (!destType.getComponentType().isAssignableFrom(srcType.getComponentType())) {
return null;
}
if (!arraycopy.isExact()) {
return null;
}
}
return srcType.getComponentType().getJavaKind();
}
