Examples with NarrowOopStamp org.graalvm.compiler.nodes.type.NarrowOopStamp used on opensource projects

Example 1 with NarrowOopStamp

use of org.graalvm.compiler.nodes.type.NarrowOopStamp in project graal by oracle.

the class SubstrateGraphBuilderPlugins method registerReferenceAccessPlugins.

private static void registerReferenceAccessPlugins(InvocationPlugins plugins) {
    Registration r = new Registration(plugins, ReferenceAccessImpl.class);
    r.register(new RequiredInvocationPlugin("getCompressedRepresentation", Receiver.class, Object.class) {

        @Override
        public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver unused, ValueNode objectNode) {
            if (ReferenceAccess.singleton().haveCompressedReferences()) {
                ValueNode compressedObj = SubstrateCompressionNode.compress(objectNode, ImageSingletons.lookup(CompressEncoding.class));
                JavaKind compressedIntKind = JavaKind.fromWordSize(ConfigurationValues.getObjectLayout().getReferenceSize());
                ValueNode compressedValue = b.add(WordCastNode.narrowOopToUntrackedWord(compressedObj, compressedIntKind));
                b.addPush(JavaKind.Object, ZeroExtendNode.convertUnsigned(compressedValue, FrameAccess.getWordStamp(), NodeView.DEFAULT));
            } else {
                b.addPush(JavaKind.Object, WordCastNode.objectToUntrackedPointer(objectNode, FrameAccess.getWordKind()));
            }
            return true;
        }
    });
    r.register(new RequiredInvocationPlugin("uncompressReference", Receiver.class, UnsignedWord.class) {

        @Override
        public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver unused, ValueNode wordNode) {
            if (ReferenceAccess.singleton().haveCompressedReferences()) {
                CompressEncoding encoding = ImageSingletons.lookup(CompressEncoding.class);
                JavaKind compressedIntKind = JavaKind.fromWordSize(ConfigurationValues.getObjectLayout().getReferenceSize());
                NarrowOopStamp compressedStamp = (NarrowOopStamp) SubstrateNarrowOopStamp.compressed((AbstractObjectStamp) StampFactory.object(), encoding);
                ValueNode narrowNode = b.add(NarrowNode.convertUnsigned(wordNode, StampFactory.forKind(compressedIntKind), NodeView.DEFAULT));
                WordCastNode compressedObj = b.add(WordCastNode.wordToNarrowObject(narrowNode, compressedStamp));
                b.addPush(JavaKind.Object, SubstrateCompressionNode.uncompress(compressedObj, encoding));
            } else {
                b.addPush(JavaKind.Object, WordCastNode.wordToObject(wordNode, FrameAccess.getWordKind()));
            }
            return true;
        }
    });
}