8343693: [JVMCI] Override ModifiersProvider.isConcrete in ResolvedJavaType to be isArray() || !isAbstract()

Reviewed-by: never

Author: Yudi Zheng

src/jdk.internal.vm.ci/share/classes/jdk/vm/ci/meta/ModifiersProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2024, 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
@@ -137,9 +137,11 @@ default boolean isAbstract() {
     }
 
     /**
-     * Checks that the method is concrete and not abstract.
+     * Returns true if this element is a method with a concrete implementation, or a type that can
+     * be instantiated. For example, array types return true for both {@link #isAbstract()} and this
+     * method.
      *
-     * @return whether the method is a concrete method
+     * @see ResolvedJavaType#isConcrete()
      */
     default boolean isConcrete() {
         return !isAbstract();

src/jdk.internal.vm.ci/share/classes/jdk/vm/ci/meta/ResolvedJavaType.java

@@ -402,4 +402,9 @@ default ResolvedJavaType lookupType(UnresolvedJavaType unresolvedJavaType, boole
     default ResolvedJavaField resolveField(UnresolvedJavaField unresolvedJavaField, ResolvedJavaType accessingClass) {
         return null;
     }
+
+    @Override
+    default boolean isConcrete() {
+        return isArray() || !isAbstract();
+    }
 }

test/hotspot/jtreg/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestResolvedJavaType.java

@@ -196,6 +196,16 @@ public void isArrayTest() {
         }
     }
 
+    @Test
+    public void isConcreteTest() {
+        for (Class<?> c : classes) {
+            ResolvedJavaType type = metaAccess.lookupJavaType(c);
+            boolean expected = c.isArray() || !isAbstract(c.getModifiers());
+            boolean actual = type.isConcrete();
+            assertEquals(expected, actual);
+        }
+    }
+
     @Test
     public void lambdaInternalNameTest() {
         // Verify that the last dot in lambda types is properly handled when transitioning from