public void lower(ArrayCopyUnrollNode arraycopy, LoweringTool tool) {
StructuredGraph graph = arraycopy.graph();
if (!graph.getGuardsStage().areFrameStatesAtDeopts()) {
// Can't be lowered yet
return;
}
SnippetInfo snippetInfo = arraycopyUnrolledWorkSnippet;
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());
args.addConst("length", arraycopy.getUnrollLength());
args.addConst("elementKind", arraycopy.getElementKind());
template(args)
.instantiate(
providers.getMetaAccess(), arraycopy, SnippetTemplate.DEFAULT_REPLACER, args);
}
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);
}
public void lower(ArrayCopyNode arraycopy, LoweringTool tool) {
JavaKind componentKind = selectComponentKind(arraycopy);
SnippetInfo snippetInfo = null;
SnippetInfo slowPathSnippetInfo = null;
Object slowPathArgument = null;
if (arraycopy.getLength().isConstant()
&& arraycopy.getLength().asJavaConstant().asLong() == 0) {
snippetInfo = arraycopyZeroLengthIntrinsicSnippet;
} else if (arraycopy.isExact()) {
snippetInfo = arraycopyExactIntrinsicSnippet;
if (shouldUnroll(arraycopy.getLength())) {
snippetInfo = arraycopyUnrolledIntrinsicSnippet;
}
} else {
if (componentKind == JavaKind.Object) {
ResolvedJavaType srcType = StampTool.typeOrNull(arraycopy.getSource().stamp());
ResolvedJavaType destType = StampTool.typeOrNull(arraycopy.getDestination().stamp());
ResolvedJavaType srcComponentType = srcType == null ? null : srcType.getComponentType();
ResolvedJavaType destComponentType =
destType == null ? null : destType.getComponentType();
if (srcComponentType != null
&& destComponentType != null
&& !srcComponentType.isPrimitive()
&& !destComponentType.isPrimitive()) {
snippetInfo = arraycopySlowPathIntrinsicSnippet;
slowPathSnippetInfo = checkcastArraycopyWorkSnippet;
slowPathArgument = LocationIdentity.any();
/*
* Because this snippet has to use Sysytem.arraycopy as a slow path, we must
* pretend to kill any() so clear the componentKind.
*/
componentKind = null;
}
}
if (componentKind == null && snippetInfo == null) {
JavaKind predictedKind = selectComponentKind(arraycopy, false);
if (predictedKind != null) {
/*
* At least one array is of a known type requiring no store checks, so
* assume the other is of the same type. Generally this is working around
* deficiencies in our propagation of type information.
*/
componentKind = predictedKind;
if (predictedKind == JavaKind.Object) {
snippetInfo = arraycopySlowPathIntrinsicSnippet;
slowPathSnippetInfo = arraycopyPredictedObjectWorkSnippet;
slowPathArgument = predictedKind;
componentKind = null;
} else {
snippetInfo = arraycopyPredictedExactIntrinsicSnippet;
}
}
}
if (snippetInfo == null) {
snippetInfo = arraycopyGenericSnippet;
}
}
Arguments args =
new Arguments(snippetInfo, arraycopy.graph().getGuardsStage(), tool.getLoweringStage());
args.add("src", arraycopy.getSource());
args.add("srcPos", arraycopy.getSourcePosition());
args.add("dest", arraycopy.getDestination());
args.add("destPos", arraycopy.getDestinationPosition());
args.add("length", arraycopy.getLength());
if (snippetInfo == arraycopyUnrolledIntrinsicSnippet) {
args.addConst("unrolledLength", arraycopy.getLength().asJavaConstant().asInt());
args.addConst("elementKind", componentKind != null ? componentKind : JavaKind.Illegal);
} else if (snippetInfo == arraycopySlowPathIntrinsicSnippet) {
args.addConst("elementKind", componentKind != null ? componentKind : JavaKind.Illegal);
args.addConst("slowPath", slowPathSnippetInfo);
assert slowPathArgument != null;
args.addConst("slowPathArgument", slowPathArgument);
} else if (snippetInfo == arraycopyExactIntrinsicSnippet
|| snippetInfo == arraycopyPredictedExactIntrinsicSnippet) {
assert componentKind != null;
args.addConst("elementKind", componentKind);
args.addConst("counter", arraycopyCallCounters.get(componentKind));
args.addConst("copiedCounter", arraycopyCallCopiedCounters.get(componentKind));
}
instantiate(args, arraycopy);
}