[GR-64086] Add extended dynamic object layout.

compiler/src/jdk.graal.compiler.test/src/jdk/graal/compiler/truffle/test/TruffleRuntimeTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -29,15 +29,16 @@
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
-import jdk.graal.compiler.api.test.Graal;
-import jdk.graal.compiler.runtime.RuntimeProvider;
 import org.junit.Test;
 
 import com.oracle.truffle.api.Truffle;
 import com.oracle.truffle.api.TruffleRuntime;
 import com.oracle.truffle.api.impl.DefaultTruffleRuntime;
 import com.oracle.truffle.api.impl.TVMCI;
 
+import jdk.graal.compiler.api.test.Graal;
+import jdk.graal.compiler.runtime.RuntimeProvider;
+
 public class TruffleRuntimeTest {
 
     @Test
@@ -75,12 +76,4 @@ public void testGetCapabilityObjectClass() {
         assertNull("Expected null return value for Object.class", object);
     }
 
-    @SuppressWarnings("deprecation")
-    @Test
-    public void testGetLayoutFactory() {
-        TruffleRuntime runtime = Truffle.getRuntime();
-        com.oracle.truffle.api.object.LayoutFactory layoutFactory = runtime.getCapability(com.oracle.truffle.api.object.LayoutFactory.class);
-        assertNotNull("LayoutFactory not found", layoutFactory);
-        // Rely on modules to only load trusted service providers
-    }
 }

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/truffle/KnownTruffleTypes.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2023, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -125,7 +125,7 @@ public class KnownTruffleTypes extends AbstractKnownTruffleTypes {
     // truffle.api.object
     public final ResolvedJavaType Shape = lookupType("com.oracle.truffle.api.object.Shape");
     public final ResolvedJavaType DynamicObject = lookupType("com.oracle.truffle.api.object.DynamicObject");
-    public final ResolvedJavaType UnsafeAccess = lookupType("com.oracle.truffle.object.UnsafeAccess");
+    public final ResolvedJavaType UnsafeAccess = lookupType("com.oracle.truffle.api.object.UnsafeAccess");
 
     // truffle.api.string
     public final ResolvedJavaType TruffleString = lookupType("com.oracle.truffle.api.strings.TruffleString");

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/truffle/substitutions/TruffleGraphBuilderPlugins.java

@@ -100,6 +100,7 @@
 import jdk.graal.compiler.options.OptionType;
 import jdk.graal.compiler.phases.util.Providers;
 import jdk.graal.compiler.replacements.StandardGraphBuilderPlugins;
+import jdk.graal.compiler.replacements.arraycopy.ArrayCopySnippets;
 import jdk.graal.compiler.replacements.nodes.arithmetic.UnsignedMulHighNode;
 import jdk.graal.compiler.serviceprovider.SpeculationReasonGroup;
 import jdk.graal.compiler.truffle.KnownTruffleTypes;
@@ -133,6 +134,7 @@
 import jdk.vm.ci.meta.JavaConstant;
 import jdk.vm.ci.meta.JavaKind;
 import jdk.vm.ci.meta.MetaAccessProvider;
+import jdk.vm.ci.meta.ResolvedJavaField;
 import jdk.vm.ci.meta.ResolvedJavaMethod;
 import jdk.vm.ci.meta.ResolvedJavaType;
 import jdk.vm.ci.meta.SpeculationLog;
@@ -167,7 +169,7 @@ public static void registerInvocationPlugins(InvocationPlugins plugins, KnownTru
         registerFrameWithoutBoxingPlugins(plugins, types, canDelayIntrinsification);
         registerTruffleSafepointPlugins(plugins, types, canDelayIntrinsification);
         registerNodePlugins(plugins, types, metaAccess, canDelayIntrinsification, providers.getConstantReflection());
-        registerDynamicObjectPlugins(plugins, types, canDelayIntrinsification);
+        registerDynamicObjectPlugins(plugins, types, canDelayIntrinsification, providers.getConstantReflection());
         registerBufferPlugins(plugins, types, canDelayIntrinsification);
         registerMemorySegmentPlugins(plugins, types, canDelayIntrinsification);
     }
@@ -1111,9 +1113,83 @@ public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Rec
         }
     }
 
-    private static void registerDynamicObjectPlugins(InvocationPlugins plugins, KnownTruffleTypes types, boolean canDelayIntrinsification) {
+    private static void registerDynamicObjectPlugins(InvocationPlugins plugins, KnownTruffleTypes types,
+                    boolean canDelayIntrinsification, ConstantReflectionProvider constantReflection) {
+        if (!types.UnsafeAccess.isInitialized()) {
+            types.UnsafeAccess.initialize();
+        }
+
+        ResolvedJavaField[] staticFields = types.UnsafeAccess.getStaticFields();
+        JavaConstant anyConstant = null;
+        for (ResolvedJavaField field : staticFields) {
+            if (field.getName().equals("ANY_LOCATION")) {
+                anyConstant = constantReflection.readFieldValue(field, null);
+                break;
+            }
+        }
+
+        JavaKind[] usedJavaKinds = {JavaKind.Boolean, JavaKind.Byte, JavaKind.Int, JavaKind.Short, JavaKind.Long, JavaKind.Float, JavaKind.Double, JavaKind.Object};
+
         Registration r = new Registration(plugins, new ResolvedJavaSymbol(types.UnsafeAccess));
-        registerUnsafeLoadStorePlugins(r, canDelayIntrinsification, null, JavaKind.Long);
+        registerUnsafeLoadStorePlugins(r, canDelayIntrinsification, anyConstant, usedJavaKinds);
+        registerUnsafeCast(r, types, canDelayIntrinsification);
+        registerBooleanCast(r);
+        registerArrayCopy(r);
+
+        registerDynamicObjectShapePlugins(plugins, types, canDelayIntrinsification);
+    }
+
+    private static void registerDynamicObjectShapePlugins(InvocationPlugins plugins, KnownTruffleTypes types, boolean canDelayIntrinsification) {
+        ResolvedJavaType dynamicObjectType = types.DynamicObject;
+        ResolvedJavaType shapeType = types.Shape;
+        ResolvedJavaSymbol dynamicObjectSymbol = new ResolvedJavaSymbol(dynamicObjectType);
+        ResolvedJavaSymbol shapeSymbol = new ResolvedJavaSymbol(shapeType);
+        Registration r = new Registration(plugins, dynamicObjectSymbol);
+        r.register(new RequiredInvocationPlugin("getShapeHelper", shapeSymbol) {
+            @Override
+            public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode shape) {
+                Stamp piStamp = StampFactory.object(TypeReference.createTrusted(b.getAssumptions(), shapeType), true);
+                ValueNode piNode = PiNode.create(shape, piStamp);
+                b.addPush(JavaKind.Object, piNode);
+                return true;
+            }
+        });
+        r.register(new RequiredInvocationPlugin("setShapeHelper", Receiver.class, shapeSymbol, long.class) {
+            @Override
+            public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode shape, ValueNode shapeOffset) {
+                if (canDelayIntrinsification) {
+                    return false;
+                }
+                if (!shapeOffset.isConstant()) {
+                    return false;
+                }
+                LocationIdentity locationIdentity = LocationIdentity.any();
+                boolean forceAnyLocation = true;
+                b.add(new RawStoreNode(receiver.get(true), shapeOffset, shape, JavaKind.Object, locationIdentity, true, null, forceAnyLocation));
+                return true;
+            }
+        });
+    }
+
+    private static void registerBooleanCast(Registration r) {
+        r.register(new RequiredInvocationPlugin("booleanCast", int.class) {
+            @Override
+            public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode value) {
+                b.addPush(JavaKind.Boolean, value);
+                return true;
+            }
+        });
+        r.register(new RequiredInvocationPlugin("intCast", boolean.class) {
+            @Override
+            public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode value) {
+                b.addPush(JavaKind.Int, value);
+                return true;
+            }
+        });
+    }
+
+    private static void registerArrayCopy(Registration r) {
+        ArrayCopySnippets.registerSystemArraycopyPlugin(r, true);
     }
 
     public static void registerUnsafeCast(Registration r, KnownTruffleTypes types, boolean canDelayIntrinsification) {

substratevm/src/com.oracle.svm.truffle/src/com/oracle/svm/truffle/TruffleBaseFeature.java

@@ -476,8 +476,6 @@ public void cleanup() {
         invokeStaticMethod("com.oracle.truffle.api.library.LibraryFactory", "resetNativeImageState",
                         Collections.singletonList(ClassLoader.class), imageClassLoader);
         invokeStaticMethod("com.oracle.truffle.api.source.Source", "resetNativeImageState", Collections.emptyList());
-        // clean up cached object layouts
-        invokeStaticMethod("com.oracle.truffle.object.LayoutImpl", "resetNativeImageState", Collections.emptyList());
     }
 
     @Override
@@ -583,8 +581,8 @@ public void duringSetup(DuringSetupAccess a) {
         metaAccess = access.getMetaAccess();
 
         uncachedDispatchField = access.findField(LibraryFactory.class, "uncachedDispatch");
-        layoutInfoMapField = access.findField("com.oracle.truffle.object.DefaultLayout$LayoutInfo", "LAYOUT_INFO_MAP");
-        layoutMapField = access.findField("com.oracle.truffle.object.DefaultLayout", "LAYOUT_MAP");
+        layoutInfoMapField = access.findField("com.oracle.truffle.api.object.LayoutImpl", "LAYOUT_INFO_MAP");
+        layoutMapField = access.findField("com.oracle.truffle.api.object.LayoutImpl", "LAYOUT_MAP");
         libraryFactoryCacheField = access.findField("com.oracle.truffle.api.library.LibraryFactory$ResolvedDispatch", "CACHE");
         if (Options.TruffleCheckPreinitializedFiles.getValue()) {
             var classInitializationSupport = access.getHostVM().getClassInitializationSupport();
@@ -970,7 +968,7 @@ private static void initializeDynamicObjectLayoutImpl(Class<?> javaClass) {
         } catch (IllegalAccessException e) {
             throw VMError.shouldNotReachHere(e);
         }
-        invokeStaticMethod("com.oracle.truffle.object.LayoutImpl", "initializeDynamicObjectLayout", List.of(Class.class, MethodHandles.Lookup.class), javaClass, privateLookup);
+        invokeStaticMethod("com.oracle.truffle.api.object.LayoutImpl", "initializeDynamicObjectLayout", List.of(Class.class, MethodHandles.Lookup.class), javaClass, privateLookup);
     }
 
     private static void registerDynamicObjectFields(BeforeAnalysisAccessImpl config) {
@@ -1578,14 +1576,8 @@ static void logFallback(String message) {
     }
 }
 
-@TargetClass(className = "com.oracle.truffle.object.CoreLocations$DynamicObjectFieldLocation", onlyWith = TruffleBaseFeature.IsEnabled.class)
-final class Target_com_oracle_truffle_object_CoreLocations_DynamicObjectFieldLocation {
-    @Alias @RecomputeFieldValue(kind = Kind.AtomicFieldUpdaterOffset) //
-    private long offset;
-}
-
-@TargetClass(className = "com.oracle.truffle.object.CoreLocations$DynamicLongFieldLocation", onlyWith = TruffleBaseFeature.IsEnabled.class)
-final class Target_com_oracle_truffle_object_CoreLocations_DynamicLongFieldLocation {
+@TargetClass(className = "com.oracle.truffle.api.object.FieldInfo", onlyWith = TruffleBaseFeature.IsEnabled.class)
+final class Target_com_oracle_truffle_api_object_FieldInfo {
     @Alias @RecomputeFieldValue(kind = Kind.AtomicFieldUpdaterOffset) //
     private long offset;
 }

truffle/CHANGELOG.md

@@ -17,6 +17,11 @@ This changelog summarizes major changes between Truffle versions relevant to lan
 * GR-64533 By default every specialization is now included for {@link GenerateUncached}, except specializations that require a {@link Specialization#limit() limit} and are replaced, those are excluded by default. By setting `@Specialization(excludeForUncached=..)` explicitly the default behavior can be overridden, e.g. to include or exclude a specialization for uncached. Specializations which are no longer compatible with uncached will produce a warning instead of an error for compatibility reasons until all languages are migrated. It is therefore expected that language implementations may see new warnings with this version.
 * GR-64124 Added `BytecodeOSRNode.pollOSRBackEdge(BytecodeOSRNode, int)` that supports batch polling for bytecode OSR. Using this method avoids checking for bytecode OSR on every loop backedge.
 * GR-64124 Deprecated  `BytecodeOSRNode.pollOSRBackEdge(BytecodeOSRNode)`. Use `BytecodeOSRNode.pollOSRBackEdge(BytecodeOSRNode, int)` instead. Please note that the old method did call `TruffleSafepoint.poll(Node)`, but the the new method does not. Please double check that your bytecode interpreter polls Truffle safepoints at loop back-edges.
+* GR-64086 Added extended Dynamic Object Model Layout that adds:
+    * A shape obsolescence strategy enabling optimistic type speculation for primitive property values with gradual migration to more general shapes on speculation failure (moving primitive slots to reference slots), eventually converging on a general enough shape tree. Reduces shape polymorphism by obsoleting and merging too specific shapes in favor of more general shapes.
+    * Automatic reference type tracking based on assumptions, eliminating redundant type checks.
+    * Automatic single-assignment tracking based on assumptions allowing languages to assume that a property is effectively final (i.e. stays unchanged after the initial assignment) as well as constant-fold values of a constant receiver with a known shape.
+    * You can still disable the new layout and switch back to the previous implementation using the system property: `-Dtruffle.object.LayoutFactory=com.oracle.truffle.api.object.CoreLayoutFactory`.
 
 ## Version 24.2.0
 * GR-60636 Truffle now stops compiling when the code cache fills up on HotSpot. A warning is printed when that happens.

truffle/mx.truffle/suite.py

@@ -658,6 +658,7 @@
       "sourceDirs" : ["src"],
       "dependencies" : [
         "com.oracle.truffle.api.interop",
+        "com.oracle.truffle.object",
       ],
       "requires" : [
         "jdk.unsupported", # sun.misc.Unsafe
@@ -789,22 +790,19 @@
     "com.oracle.truffle.object" : {
       "subDir" : "src",
       "sourceDirs" : ["src"],
-      "dependencies" : ["com.oracle.truffle.api.object"],
-      "requires" : [
-        "jdk.unsupported", # sun.misc.Unsafe
-      ],
+      "dependencies" : ["com.oracle.truffle.api"],
       "checkstyle" : "com.oracle.truffle.api",
       "javaCompliance" : "17+",
-      "annotationProcessors" : ["TRUFFLE_DSL_PROCESSOR"],
+      "annotationProcessors" : [],
       "workingSets" : "Truffle",
       "graalCompilerSourceEdition": "ignore",
     },
 
-    "com.oracle.truffle.object.basic.test" : {
+    "com.oracle.truffle.api.object.test" : {
       "subDir" : "src",
       "sourceDirs" : ["src"],
       "dependencies" : [
-        "com.oracle.truffle.object",
+        "com.oracle.truffle.api.object",
         "com.oracle.truffle.api.test",
         "mx:JUNIT"
       ],
@@ -1635,7 +1633,6 @@
         ],
         "uses" : [
           "com.oracle.truffle.api.impl.TruffleLocator",
-          "com.oracle.truffle.api.object.LayoutFactory",
           "com.oracle.truffle.runtime.LoopNodeFactory",
           "com.oracle.truffle.runtime.TruffleTypes",
           "com.oracle.truffle.runtime.EngineCacheSupport",
@@ -1724,6 +1721,8 @@
           # Qualified exports
           "com.oracle.truffle.api.impl to org.graalvm.locator, org.graalvm.truffle.runtime, com.oracle.truffle.enterprise, org.graalvm.truffle.runtime.svm, com.oracle.truffle.enterprise.svm, com.oracle.truffle.truffle_nfi_panama",
           "com.oracle.truffle.object to com.oracle.truffle.enterprise, org.graalvm.truffle.runtime, com.oracle.truffle.enterprise, org.graalvm.truffle.runtime.svm, com.oracle.truffle.enterprise.svm",
+          "com.oracle.truffle.object.enterprise to com.oracle.truffle.enterprise",
+          # GR-64984: Exports to com.oracle.truffle.enterprise are only needed for jdk21.
         ],
         "opens" : [
           "com.oracle.truffle.polyglot to org.graalvm.truffle.runtime",
@@ -1765,7 +1764,7 @@
         "com.oracle.truffle.api.profiles",
         "com.oracle.truffle.api.debug",
         "com.oracle.truffle.api.utilities",
-        "com.oracle.truffle.object",
+        "com.oracle.truffle.api.object",
         "com.oracle.truffle.api.strings",
         "com.oracle.truffle.polyglot",
         "com.oracle.truffle.host",
@@ -2201,7 +2200,7 @@
          "com.oracle.truffle.api.debug.test",
          "com.oracle.truffle.api.strings.test",
          "com.oracle.truffle.api.bytecode.test",
-         "com.oracle.truffle.object.basic.test",
+         "com.oracle.truffle.api.object.test",
          "com.oracle.truffle.api.staticobject.test",
        ],
        "exclude" : [

truffle/src/com.oracle.truffle.api.library/src/com/oracle/truffle/api/library/GenerateLibrary.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -89,7 +89,7 @@
  * receiver types of third parties or the JDK. For example the Truffle interop library has default
  * exports for most {@link Number} types, {@link String} and {@link Boolean} type.
  * <p>
- * In order to enable AOT generation for a a library annotate the class with {@link GenerateAOT} and
+ * In order to enable AOT generation for a library annotate the class with {@link GenerateAOT} and
  * enable exports to be used for AOT by setting {@link ExportLibrary#useForAOT()} to
  * <code>true</code>.
  *
@@ -326,7 +326,7 @@
     boolean defaultExportLookupEnabled() default false;
 
     /**
-     * Allows the use of {@link DynamicDispatchLibrary} with this library. By default dynamic
+     * Allows the use of {@link DynamicDispatchLibrary} with this library. By default, dynamic
      * dispatch is enabled. If this flag is set to <code>false</code> then the
      * {@link DynamicDispatchLibrary#dispatch(Object) dispatch} method will not be used for this
      * library. Only default exports and exports declared with the receiver type will be used

truffle/src/com.oracle.truffle.object.basic.test/src/com/oracle/truffle/object/basic/test/CachedFallbackTest.java → truffle/src/com.oracle.truffle.api.object.test/src/com/oracle/truffle/object/basic/test/CachedFallbackTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0

truffle/src/com.oracle.truffle.object.basic.test/src/com/oracle/truffle/object/basic/test/CachedGetNode.java → truffle/src/com.oracle.truffle.api.object.test/src/com/oracle/truffle/object/basic/test/CachedGetNode.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0

truffle/src/com.oracle.truffle.object.basic.test/src/com/oracle/truffle/object/basic/test/CachedPutNode.java → truffle/src/com.oracle.truffle.api.object.test/src/com/oracle/truffle/object/basic/test/CachedPutNode.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0