# HG changeset patch
# User Lukas Stadler <lukas.stadler@oracle.com>
# Date 1406555587 -7200
# Node ID 5fcb220206e270b5bd874e4ba0827b46f8017fa9
# Parent  a4490086af4d4387a94c50cecb022c1152e1ac12
small fix in FloatingReadPhase (when handling existing phis)

diff -r a4490086af4d -r 5fcb220206e2 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	Mon Jul 28 15:53:07 2014 +0200
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/FloatingReadPhase.java	Mon Jul 28 15:53:07 2014 +0200
@@ -209,7 +209,7 @@
 
     }
 
-    private static class CollectMemoryCheckpointsClosure extends NodeIteratorClosure<Set<LocationIdentity>> {
+    public static class CollectMemoryCheckpointsClosure extends NodeIteratorClosure<Set<LocationIdentity>> {
 
         private final Map<LoopBeginNode, Set<LocationIdentity>> modifiedInLoops;
 
@@ -261,7 +261,7 @@
 
     }
 
-    private static class FloatingReadClosure extends NodeIteratorClosure<MemoryMapImpl> {
+    public static class FloatingReadClosure extends NodeIteratorClosure<MemoryMapImpl> {
 
         private final Map<LoopBeginNode, Set<LocationIdentity>> modifiedInLoops;
         private boolean createFloatingReads;
@@ -372,7 +372,7 @@
             Map<LocationIdentity, MemoryPhiNode> phis = new HashMap<>();
 
             if (updateExistingPhis) {
-                for (MemoryPhiNode phi : loop.phis().filter(MemoryPhiNode.class)) {
+                for (MemoryPhiNode phi : loop.phis().filter(MemoryPhiNode.class).snapshot()) {
                     if (modifiedLocations.contains(phi.getLocationIdentity())) {
                         phi.values().clear();
                         phi.addInput(ValueNodeUtil.asNode(initialState.getLastLocationAccess(phi.getLocationIdentity())));