Add support for @stable annotation

Author: Christian Wimmer

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/meta/SharedConstantFieldProvider.java

@@ -70,7 +70,18 @@ public boolean isFinalField(ResolvedJavaField field, ConstantFieldTool<?> tool)
 
     @Override
     public boolean isStableField(ResolvedJavaField field, ConstantFieldTool<?> tool) {
-        return super.isStableField(field, tool) && allowConstantFolding(field);
+        boolean stable;
+        /*
+         * GR-46030: JVMCI does not provide access yet to the proper "stable" flag that also takes
+         * the class loader of the using class into account. So we look at the annotation directly
+         * for now.
+         */
+        if (field.isAnnotationPresent(jdk.internal.vm.annotation.Stable.class)) {
+            stable = true;
+        } else {
+            stable = super.isStableField(field, tool);
+        }
+        return stable && allowConstantFolding(field);
     }
 
     private boolean allowConstantFolding(ResolvedJavaField field) {

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/methodhandles/MethodHandleFeature.java

@@ -149,7 +149,7 @@ public void beforeAnalysis(BeforeAnalysisAccess access) {
         Class<?> mhImplClazz = access.findClassByName("java.lang.invoke.MethodHandleImpl");
 
         access.registerReachabilityHandler(MethodHandleFeature::registerMHImplFunctionsForReflection,
-                        ReflectionUtil.lookupMethod(mhImplClazz, "createFunction", byte.class));
+                        ReflectionUtil.lookupMethod(mhImplClazz, "getFunction", byte.class));
 
         access.registerReachabilityHandler(MethodHandleFeature::registerMHImplConstantHandlesForReflection,
                         ReflectionUtil.lookupMethod(mhImplClazz, "makeConstantHandle", int.class));
@@ -158,7 +158,7 @@ public void beforeAnalysis(BeforeAnalysisAccess access) {
                         access.findClassByName("java.lang.invoke.MethodHandleImpl$CountingWrapper"));
 
         access.registerReachabilityHandler(MethodHandleFeature::registerInvokersFunctionsForReflection,
-                        ReflectionUtil.lookupMethod(access.findClassByName("java.lang.invoke.Invokers"), "createFunction", byte.class));
+                        ReflectionUtil.lookupMethod(access.findClassByName("java.lang.invoke.Invokers"), "getFunction", byte.class));
 
         access.registerReachabilityHandler(MethodHandleFeature::registerValueConversionBoxFunctionsForReflection,
                         ReflectionUtil.lookupMethod(ValueConversions.class, "boxExact", Wrapper.class));