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changeset 18285:420161aee840

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added HotSpotObjectConstant.getSuperclass()
author Doug Simon <doug.simon@oracle.com>
date Thu, 06 Nov 2014 13:48:01 +0100
parents 29ba2a7cdfcb
children ffcbc50063a3
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstant.java graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/ClassGetSuperclassNode.java
diffstat 3 files changed, 20 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstant.java	Thu Nov 06 13:28:35 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstant.java	Thu Nov 06 13:48:01 2014 +0100
@@ -66,4 +66,12 @@
      * @return {@code null} if this constant does not represent a {@link Class} object
      */
     JavaConstant getComponentType();
+
+    /**
+     * Gets the result of {@link Class#getSuperclass()} for the {@link Class} object represented by
+     * this constant.
+     *
+     * @return {@code null} if this constant does not represent a {@link Class} object
+     */
+    JavaConstant getSuperclass();
 }
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java	Thu Nov 06 13:28:35 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java	Thu Nov 06 13:48:01 2014 +0100
@@ -124,6 +124,13 @@
         return null;
     }
 
+    public JavaConstant getSuperclass() {
+        if (object instanceof Class) {
+            return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getSuperclass());
+        }
+        return null;
+    }
+
     @Override
     public boolean isNull() {
         return false;
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/ClassGetSuperclassNode.java	Thu Nov 06 13:28:35 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/ClassGetSuperclassNode.java	Thu Nov 06 13:48:01 2014 +0100
@@ -22,6 +22,7 @@
  */
 package com.oracle.graal.hotspot.nodes;
 
+import com.oracle.graal.api.meta.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.graph.spi.*;
 import com.oracle.graal.hotspot.meta.*;
@@ -54,10 +55,10 @@
     public Node canonical(CanonicalizerTool tool) {
         ValueNode javaClass = getJavaClass();
         if (javaClass.isConstant()) {
-            Class<?> c = (Class<?>) HotSpotObjectConstantImpl.asObject(javaClass.asJavaConstant());
-            if (c != null) {
-                Class<?> superclass = c.getSuperclass();
-                return ConstantNode.forConstant(HotSpotObjectConstantImpl.forObject(superclass), tool.getMetaAccess());
+            HotSpotObjectConstant c = (HotSpotObjectConstant) javaClass.asJavaConstant();
+            JavaConstant superclass = c.getSuperclass();
+            if (superclass != null) {
+                return ConstantNode.forConstant(superclass, tool.getMetaAccess());
             }
         }
         return this;