# HG changeset patch
# User Roland Schatz <roland.schatz@oracle.com>
# Date 1416919259 -3600
# Node ID 9f06d9b2cc43dab3a7a525299b18d1236a548745
# Parent  5c5afd2c6bb3b6f28c79f2c5dd228351462125a6
Cache method pointer stamps.

diff -r 5c5afd2c6bb3 -r 9f06d9b2cc43 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/type/MethodPointerStamp.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/type/MethodPointerStamp.java	Mon Nov 24 16:42:42 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/type/MethodPointerStamp.java	Tue Nov 25 13:40:59 2014 +0100
@@ -28,12 +28,18 @@
 
 public final class MethodPointerStamp extends MetaspacePointerStamp {
 
+    private static final MethodPointerStamp METHOD = new MethodPointerStamp(false, false);
+
+    private static final MethodPointerStamp METHOD_NON_NULL = new MethodPointerStamp(true, false);
+
+    private static final MethodPointerStamp METHOD_ALWAYS_NULL = new MethodPointerStamp(false, true);
+
     public static MethodPointerStamp method() {
-        return new MethodPointerStamp(false, false);
+        return METHOD;
     }
 
     public static MethodPointerStamp methodNonNull() {
-        return new MethodPointerStamp(true, false);
+        return METHOD_NON_NULL;
     }
 
     private MethodPointerStamp(boolean nonNull, boolean alwaysNull) {
@@ -51,10 +57,10 @@
     @Override
     public Stamp constant(Constant c, MetaAccessProvider meta) {
         if (JavaConstant.NULL_POINTER.equals(c)) {
-            return new MethodPointerStamp(false, true);
+            return METHOD_ALWAYS_NULL;
         } else {
             assert c instanceof HotSpotMetaspaceConstant;
-            return this;
+            return METHOD_NON_NULL;
         }
     }