[GR-64829] Remove JDK21 specific code in compiler.

compiler/mx.compiler/suite.py

@@ -269,6 +269,8 @@
           "jdk.internal.misc",
           "jdk.internal.util",
           "jdk.internal.vm.annotation",
+          "sun.security.util.math",
+          "sun.security.util.math.intpoly",
         ],
         "java.instrument" : [
           "sun.instrument",
@@ -317,7 +319,7 @@
       "workingSets" : "Graal,HotSpot",
     },
 
-    "jdk.graal.compiler.hotspot.jdk21.test" : {
+    "jdk.graal.compiler.hotspot.preview.test" : {
       "testProject" : True,
       "subDir" : "src",
       "sourceDirs" : ["src"],
@@ -340,32 +342,6 @@
       "graalCompilerSourceEdition": "ignore",
     },
 
-    "jdk.graal.compiler.hotspot.jdk23.test" : {
-      "testProject" : True,
-      "subDir" : "src",
-      "sourceDirs" : ["src"],
-      "dependencies" : [
-        "jdk.graal.compiler.test",
-      ],
-      "requiresConcealed" : {
-        "java.base" : [
-          "jdk.internal.util",
-          "sun.security.util.math",
-          "sun.security.util.math.intpoly",
-        ],
-        "jdk.internal.vm.ci" : [
-          "jdk.vm.ci.code",
-          "jdk.vm.ci.meta",
-        ],
-      },
-      "checkstyle": "jdk.graal.compiler",
-      "javaCompliance" : "23+",
-      # GR-51699
-      "forceJavac": True,
-      "workingSets" : "Graal,HotSpot,Test",
-      "graalCompilerSourceEdition": "ignore",
-    },
-
     "jdk.graal.compiler.virtual.bench" : {
       "subDir" : "src",
       "sourceDirs" : ["src"],
@@ -555,11 +531,10 @@
       "maven": False,
       "graalCompilerSourceEdition": "ignore",
     },
-    "GRAAL_TEST_PREVIEW_FEATURE" : {
+    "GRAAL_TEST_PREVIEW_FEATURES" : {
       "subDir" : "src",
       "dependencies" : [
-        "jdk.graal.compiler.hotspot.jdk21.test",
-        "jdk.graal.compiler.hotspot.jdk23.test",
+        "jdk.graal.compiler.hotspot.preview.test",
       ],
       "distDependencies" : [
         "GRAAL_TEST",

compiler/src/jdk.graal.compiler.hotspot.jdk21.test/src/jdk/graal/compiler/hotspot/jdk21/test/PreviewEnabledTest.java → compiler/src/jdk.graal.compiler.hotspot.preview.test/src/jdk/graal/compiler/hotspot/preview/test/PreviewEnabledTest.java

@@ -22,7 +22,7 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
-package jdk.graal.compiler.hotspot.jdk21.test;
+package jdk.graal.compiler.hotspot.preview.test;
 
 import java.io.IOException;
 

compiler/src/jdk.graal.compiler.hotspot.jdk21.test/src/jdk/graal/compiler/hotspot/jdk21/test/ScopedValueCacheTest.java → compiler/src/jdk.graal.compiler.hotspot.preview.test/src/jdk/graal/compiler/hotspot/preview/test/ScopedValueCacheTest.java

@@ -22,7 +22,7 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
-package jdk.graal.compiler.hotspot.jdk21.test;
+package jdk.graal.compiler.hotspot.preview.test;
 
 import java.lang.reflect.Method;
 

compiler/src/jdk.graal.compiler.libgraal/src/jdk/graal/compiler/libgraal/LibGraalFeature.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2024, 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
@@ -37,7 +37,6 @@
 import java.util.IdentityHashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.ServiceLoader;
 import java.util.Set;
 import java.util.TreeMap;
 import java.util.TreeSet;
@@ -46,8 +45,6 @@
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 
-import jdk.graal.compiler.core.common.NativeImageSupport;
-import jdk.graal.compiler.hotspot.CompilerConfig;
 import org.graalvm.collections.EconomicMap;
 import org.graalvm.jniutils.NativeBridgeSupport;
 import org.graalvm.nativeimage.ImageInfo;
@@ -62,25 +59,23 @@
 
 import jdk.graal.compiler.core.common.Fields;
 import jdk.graal.compiler.core.common.LibGraalSupport.HostedOnly;
+import jdk.graal.compiler.core.common.NativeImageSupport;
 import jdk.graal.compiler.core.common.spi.ForeignCallSignature;
 import jdk.graal.compiler.debug.GraalError;
 import jdk.graal.compiler.graph.Edges;
 import jdk.graal.compiler.graph.NodeClass;
+import jdk.graal.compiler.hotspot.CompilerConfig;
 import jdk.graal.compiler.hotspot.EncodedSnippets;
 import jdk.graal.compiler.hotspot.HotSpotForeignCallLinkage;
 import jdk.graal.compiler.hotspot.HotSpotReplacementsImpl;
 import jdk.graal.compiler.libgraal.truffle.LibGraalTruffleHostEnvironmentLookup;
 import jdk.graal.compiler.options.OptionDescriptor;
 import jdk.graal.compiler.options.OptionKey;
 import jdk.graal.compiler.options.OptionsParser;
-import jdk.graal.compiler.serviceprovider.GraalServices;
 import jdk.graal.compiler.truffle.host.TruffleHostEnvironment;
 import jdk.graal.compiler.util.ObjectCopier;
 import jdk.internal.module.Modules;
-import jdk.vm.ci.hotspot.HotSpotJVMCIBackendFactory;
-import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
 import jdk.vm.ci.hotspot.HotSpotModifiers;
-import jdk.vm.ci.services.JVMCIServiceLocator;
 
 /**
  * This feature builds the libgraal shared library (e.g., libjvmcicompiler.so on linux).
@@ -360,8 +355,6 @@ public void beforeAnalysis(BeforeAnalysisAccess access) {
         RuntimeReflection.registerAllDeclaredClasses(Long.class);
         RuntimeReflection.register(lookupField(lookupClass("java.lang.Long$LongCache"), "cache"));
 
-        doLegacyJVMCIInitialization();
-
         GetCompilerConfig.Result configResult = GetCompilerConfig.from(libgraalJavaHome);
         for (var e : configResult.opens().entrySet()) {
             Module module = ModuleLayer.boot().findModule(e.getKey()).orElseThrow();
@@ -394,45 +387,6 @@ private static void checkNodeClasses(EncodedSnippets encodedSnippets, String act
         GraalError.guarantee(actual.equals(expect), "%n%s%n !=%n%s", actual, expect);
     }
 
-    /**
-     * Initialization of JVMCI code that needs to be done for JDK versions that do not include
-     * JDK-8346781.
-     */
-    private void doLegacyJVMCIInitialization() {
-        if (!BeforeJDK8346781.VALUE) {
-            return;
-        }
-        try {
-            String rawArch = GraalServices.getSavedProperty("os.arch");
-            String arch = switch (rawArch) {
-                case "x86_64", "amd64" -> "AMD64";
-                case "aarch64" -> "aarch64";
-                case "riscv64" -> "riscv64";
-                default -> throw new GraalError("Unknown or unsupported arch: %s", rawArch);
-            };
-
-            ClassLoader cl = (ClassLoader) libgraalLoader;
-            Field cachedHotSpotJVMCIBackendFactoriesField = ObjectCopier.getField(HotSpotJVMCIRuntime.class, "cachedHotSpotJVMCIBackendFactories");
-            GraalError.guarantee(cachedHotSpotJVMCIBackendFactoriesField.get(null) == null, "Expect cachedHotSpotJVMCIBackendFactories to be null");
-            ServiceLoader<HotSpotJVMCIBackendFactory> load = ServiceLoader.load(HotSpotJVMCIBackendFactory.class, cl);
-            List<HotSpotJVMCIBackendFactory> backendFactories = load.stream()//
-                            .map(ServiceLoader.Provider::get)//
-                            .filter(s -> s.getArchitecture().equals(arch))//
-                            .toList();
-            cachedHotSpotJVMCIBackendFactoriesField.set(null, backendFactories);
-            GraalError.guarantee(backendFactories.size() == 1, "%s", backendFactories);
-
-            var jvmciServiceLocatorCachedLocatorsField = ObjectCopier.getField(JVMCIServiceLocator.class, "cachedLocators");
-            GraalError.guarantee(jvmciServiceLocatorCachedLocatorsField.get(null) == null, "Expect cachedLocators to be null");
-            Iterable<JVMCIServiceLocator> serviceLocators = ServiceLoader.load(JVMCIServiceLocator.class, cl);
-            List<JVMCIServiceLocator> cachedLocators = new ArrayList<>();
-            serviceLocators.forEach(cachedLocators::add);
-            jvmciServiceLocatorCachedLocatorsField.set(null, cachedLocators);
-        } catch (Throwable e) {
-            throw new GraalError(e);
-        }
-    }
-
     @Override
     public void afterAnalysis(AfterAnalysisAccess access) {
         optionCollector.afterAnalysis(access);

compiler/src/jdk.graal.compiler.libgraal/src/jdk/graal/compiler/libgraal/LibGraalSubstitutions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2024, 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
@@ -27,22 +27,11 @@
 import com.oracle.svm.core.annotate.Alias;
 import com.oracle.svm.core.annotate.RecomputeFieldValue;
 import com.oracle.svm.core.annotate.TargetClass;
-import com.oracle.svm.core.annotate.TargetElement;
 
 class LibGraalSubstitutions {
 
     @TargetClass(className = "jdk.vm.ci.services.Services", onlyWith = LibGraalFeature.IsEnabled.class)
     static final class Target_jdk_vm_ci_services_Services {
-        /**
-         * Ensures field returns false if seen by the analysis.
-         */
-        // Checkstyle: stop
-        @Alias //
-        @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias, isFinal = true)//
-        @TargetElement(onlyWith = BeforeJDK8346781.class)//
-        public static boolean IS_BUILDING_NATIVE_IMAGE = false;
-        // Checkstyle: resume
-
         /*
          * Static final boolean field Services.IS_IN_NATIVE_IMAGE is used in many places in the
          * JVMCI codebase to switch between the different implementations needed for regular use (a

compiler/src/jdk.graal.compiler.libgraal/src/jdk/graal/compiler/libgraal/LibGraalSupportImpl.java

@@ -56,7 +56,6 @@
 import jdk.graal.compiler.debug.GraalError;
 import jdk.graal.compiler.libgraal.truffle.HSTruffleCompilerRuntime;
 import jdk.graal.compiler.options.OptionValues;
-import jdk.graal.compiler.serviceprovider.JavaVersionUtil;
 import jdk.graal.compiler.word.Word;
 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;
@@ -256,11 +255,8 @@ private static MethodHandle findCompilerThreadCanCallJavaScopeConstructor() {
             try {
                 return MethodHandles.lookup().findConstructor(Class.forName("jdk.vm.ci.hotspot.CompilerThreadCanCallJavaScope"), MethodType.methodType(void.class, boolean.class));
             } catch (ReflectiveOperationException e) {
-                if (JavaVersionUtil.JAVA_SPEC != 21) {
-                    throw new InternalError(e);
-                }
+                throw new InternalError(e);
             }
-            return null;
         }
 
         private final AutoCloseable impl;

compiler/src/jdk.graal.compiler.libgraal/src/jdk/graal/compiler/libgraal/truffle/LibGraalTruffleHostEnvironment.java

@@ -24,13 +24,18 @@
  */
 package jdk.graal.compiler.libgraal.truffle;
 
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.List;
+
 import com.oracle.truffle.compiler.HostMethodInfo;
 import com.oracle.truffle.compiler.TruffleCompilable;
 import com.oracle.truffle.compiler.TruffleCompilerRuntime;
+
 import jdk.graal.compiler.core.common.util.MethodKey;
 import jdk.graal.compiler.hotspot.CompilationContext;
 import jdk.graal.compiler.hotspot.HotSpotGraalServices;
-import jdk.graal.compiler.serviceprovider.JavaVersionUtil;
 import jdk.graal.compiler.truffle.TruffleCompilerImpl;
 import jdk.graal.compiler.truffle.TruffleElementCache;
 import jdk.graal.compiler.truffle.host.TruffleHostEnvironment;
@@ -40,11 +45,6 @@
 import jdk.vm.ci.meta.MetaAccessProvider;
 import jdk.vm.ci.meta.ResolvedJavaMethod;
 
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.util.List;
-
 final class LibGraalTruffleHostEnvironment extends TruffleHostEnvironment {
 
     private final HostMethodInfoCache hostCache = new HostMethodInfoCache();
@@ -132,11 +132,8 @@ private static MethodHandle findCompilerThreadCanCallJavaScopeConstructor() {
             try {
                 return MethodHandles.lookup().findConstructor(Class.forName("jdk.vm.ci.hotspot.CompilerThreadCanCallJavaScope"), MethodType.methodType(void.class, boolean.class));
             } catch (ReflectiveOperationException e) {
-                if (JavaVersionUtil.JAVA_SPEC != 21) {
-                    throw new InternalError(e);
-                }
+                throw new InternalError(e);
             }
-            return null;
         }
 
         private final AutoCloseable impl;

compiler/src/jdk.graal.compiler.test/src/jdk/graal/compiler/core/test/jfr/TestGetEventWriter.java

@@ -29,7 +29,6 @@
 import java.lang.reflect.InvocationTargetException;
 
 import org.junit.Assert;
-import org.junit.Assume;
 import org.junit.Test;
 import org.objectweb.asm.AnnotationVisitor;
 import org.objectweb.asm.ClassWriter;
@@ -38,7 +37,6 @@
 
 import jdk.graal.compiler.core.common.PermanentBailoutException;
 import jdk.graal.compiler.core.test.SubprocessTest;
-import jdk.graal.compiler.serviceprovider.JavaVersionUtil;
 import jdk.graal.compiler.test.AddExports;
 import jdk.jfr.Event;
 import jdk.jfr.Recording;
@@ -82,7 +80,6 @@ static class InitializationEvent extends Event {
 
     @Test
     public void test() throws IOException, InterruptedException {
-        Assume.assumeTrue(JavaVersionUtil.JAVA_SPEC > 21);
         String[] args;
         if (isJFRAvailable()) {
             args = new String[0];