# HG changeset patch
# User Lukas Stadler <lukas.stadler@jku.at>
# Date 1363775417 -3600
# Node ID 7aefc149c471cfacb63a769fba00ff280086abf0
# Parent  e53b31b29aa42b715add0f248c4684770af1cb04
allow multiple identities in MemoryCheckpoint interface

diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/BeginLockScopeNode.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/BeginLockScopeNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/BeginLockScopeNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -52,8 +52,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/DirectCompareAndSwapNode.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/DirectCompareAndSwapNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/DirectCompareAndSwapNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -70,8 +70,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return locationIdentity;
+    public Object[] getLocationIdentities() {
+        return new Object[]{locationIdentity};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/EndLockScopeNode.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/EndLockScopeNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/EndLockScopeNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -44,8 +44,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/InvokeNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/InvokeNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/InvokeNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -109,8 +109,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/InvokeWithExceptionNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/InvokeWithExceptionNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/InvokeWithExceptionNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -162,8 +162,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     public FrameState stateDuring() {
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/StartNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/StartNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/StartNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -30,7 +30,7 @@
 public class StartNode extends BeginStateSplitNode implements MemoryCheckpoint {
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 }
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MembarNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MembarNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MembarNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -43,8 +43,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MemoryCheckpoint.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MemoryCheckpoint.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MemoryCheckpoint.java	Wed Mar 20 11:30:17 2013 +0100
@@ -26,8 +26,8 @@
 
 /**
  * This interface marks is used for subclasses of {@link FixedNode} that kill a set of memory
- * locations represented by a location identity (i.e. change a value at one or more locations that
- * belong to this location identity).
+ * locations represented by location identities (i.e. change a value at one or more locations that
+ * belong to these location identities).
  */
 public interface MemoryCheckpoint {
 
@@ -35,8 +35,8 @@
      * This method is used to determine which set of memory locations is killed by this node.
      * Returning the special value {@link LocationNode#ANY_LOCATION} will kill all memory locations.
      * 
-     * @return the identity of the location killed by this node.
+     * @return the identities of all locations killed by this node.
      */
-    Object getLocationIdentity();
+    Object[] getLocationIdentities();
 
 }
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/RuntimeCallNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/RuntimeCallNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/RuntimeCallNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -49,8 +49,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeStoreNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeStoreNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeStoreNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -72,8 +72,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteMemoryCheckpointNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteMemoryCheckpointNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteMemoryCheckpointNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -37,8 +37,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -66,7 +66,7 @@
     public static native void writeMemory(Object object, Object value, Object location);
 
     @Override
-    public Object getLocationIdentity() {
-        return location().locationIdentity();
+    public Object[] getLocationIdentities() {
+        return new Object[]{location().locationIdentity()};
     }
 }
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/CompareAndSwapNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/CompareAndSwapNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/CompareAndSwapNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -71,8 +71,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/ExceptionObjectNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/ExceptionObjectNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/ExceptionObjectNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -42,8 +42,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     @Override
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorEnterNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorEnterNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorEnterNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -41,8 +41,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     public void lower(LoweringTool tool) {
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorExitNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorExitNode.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorExitNode.java	Wed Mar 20 11:30:17 2013 +0100
@@ -42,8 +42,8 @@
     }
 
     @Override
-    public Object getLocationIdentity() {
-        return LocationNode.ANY_LOCATION;
+    public Object[] getLocationIdentities() {
+        return new Object[]{LocationNode.ANY_LOCATION};
     }
 
     public void lower(LoweringTool tool) {
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/FloatingReadPhase.java
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/FloatingReadPhase.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/FloatingReadPhase.java	Wed Mar 20 11:30:17 2013 +0100
@@ -84,7 +84,9 @@
         @Override
         protected void processNode(FixedNode node, Set<Object> currentState) {
             if (node instanceof MemoryCheckpoint) {
-                currentState.add(((MemoryCheckpoint) node).getLocationIdentity());
+                for (Object identity : ((MemoryCheckpoint) node).getLocationIdentities()) {
+                    currentState.add(identity);
+                }
             }
         }
 
@@ -132,10 +134,12 @@
         }
 
         private void processCheckpoint(MemoryCheckpoint checkpoint, MemoryMap state) {
-            if (checkpoint.getLocationIdentity() == LocationNode.ANY_LOCATION) {
-                state.lastMemorySnapshot.clear();
+            for (Object identity : checkpoint.getLocationIdentities()) {
+                if (identity == LocationNode.ANY_LOCATION) {
+                    state.lastMemorySnapshot.clear();
+                }
+                state.lastMemorySnapshot.put(identity, (ValueNode) checkpoint);
             }
-            state.lastMemorySnapshot.put(checkpoint.getLocationIdentity(), (ValueNode) checkpoint);
         }
 
         private void processRead(ReadNode readNode, MemoryMap state) {
@@ -210,7 +214,9 @@
                  * needs to choose by putting in the location identity on both successors.
                  */
                 InvokeWithExceptionNode checkpoint = (InvokeWithExceptionNode) node.predecessor();
-                result.lastMemorySnapshot.put(checkpoint.getLocationIdentity(), node);
+                for (Object identity : checkpoint.getLocationIdentities()) {
+                    result.lastMemorySnapshot.put(identity, node);
+                }
             }
             return result;
         }
diff -r e53b31b29aa4 -r 7aefc149c471 graal/com.oracle.graal.phases/src/com/oracle/graal/phases/schedule/SchedulePhase.java
--- a/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/schedule/SchedulePhase.java	Tue Mar 19 17:03:13 2013 +0100
+++ b/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/schedule/SchedulePhase.java	Wed Mar 20 11:30:17 2013 +0100
@@ -64,12 +64,13 @@
                 if (node instanceof FloatingReadNode) {
                     currentState.add((FloatingReadNode) node);
                 } else if (node instanceof MemoryCheckpoint) {
-                    Object identity = ((MemoryCheckpoint) node).getLocationIdentity();
-                    for (Iterator<FloatingReadNode> iter = currentState.iterator(); iter.hasNext();) {
-                        FloatingReadNode read = iter.next();
-                        FixedNode fixed = (FixedNode) node;
-                        if (identity == LocationNode.ANY_LOCATION || read.location().locationIdentity() == identity) {
-                            addPhantomReference(read, fixed);
+                    for (Object identity : ((MemoryCheckpoint) node).getLocationIdentities()) {
+                        for (Iterator<FloatingReadNode> iter = currentState.iterator(); iter.hasNext();) {
+                            FloatingReadNode read = iter.next();
+                            FixedNode fixed = (FixedNode) node;
+                            if (identity == LocationNode.ANY_LOCATION || read.location().locationIdentity() == identity) {
+                                addPhantomReference(read, fixed);
+                            }
                         }
                     }
                 }