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changeset 18282:ecf3de366ecc

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added HotSpotObjectConstant.getIdentityHashCode()
author Doug Simon <doug.simon@oracle.com>
date Thu, 06 Nov 2014 13:24:16 +0100
parents cffcb119fdba
children b2eb7302706c
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/replacements/SystemIdentityHashCodeNode.java
diffstat 3 files changed, 17 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstant.java	Thu Nov 06 13:22:00 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstant.java	Thu Nov 06 13:24:16 2014 +0100
@@ -40,5 +40,13 @@
      *
      * @return {@code null} if this constant does not represent a {@link Class} object
      */
+    @PureFunction
     JavaConstant getClassLoader();
+
+    /**
+     * Gets the {@linkplain System#identityHashCode(Object) identity} has code for the object
+     * represented by this constant.
+     */
+    @PureFunction
+    int getIdentityHashCode();
 }
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java	Thu Nov 06 13:22:00 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java	Thu Nov 06 13:24:16 2014 +0100
@@ -105,6 +105,10 @@
         return null;
     }
 
+    public int getIdentityHashCode() {
+        return System.identityHashCode(object);
+    }
+
     @Override
     public boolean isNull() {
         return false;
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/SystemIdentityHashCodeNode.java	Thu Nov 06 13:22:00 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/SystemIdentityHashCodeNode.java	Thu Nov 06 13:24:16 2014 +0100
@@ -43,6 +43,10 @@
 
     @Override
     protected JavaConstant evaluate(JavaConstant param, MetaAccessProvider metaAccess) {
-        return ImmutableCode.getValue() || param.isNull() ? null : JavaConstant.forInt(System.identityHashCode(HotSpotObjectConstantImpl.asObject(param)));
+        if (ImmutableCode.getValue() || param.isNull()) {
+            return null;
+        }
+        HotSpotObjectConstant c = (HotSpotObjectConstant) param;
+        return JavaConstant.forInt(c.getIdentityHashCode());
     }
 }