# HG changeset patch
# User Gilles Duboscq <duboscq@ssw.jku.at>
# Date 1337686230 -7200
# Node ID b26a95cf8e3d68242cd1dacd9a660ae72bd56c18
# Parent  4e9723f38034d3da04c9bb573178f6928230c633
Keep UsagesDroppedNodes in canonicalizer

diff -r 4e9723f38034 -r b26a95cf8e3d graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/CanonicalizerPhase.java
--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/CanonicalizerPhase.java	Tue May 22 12:10:58 2012 +0200
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/CanonicalizerPhase.java	Tue May 22 13:30:30 2012 +0200
@@ -94,6 +94,14 @@
         }
         tool = new Tool(workList, runtime, target, assumptions, immutabilityPredicate);
         processWorkSet(graph);
+
+        while (graph.getUsagesDroppedNodesCount() > 0) {
+            for (Node n : graph.getAndCleanUsagesDroppedNodes()) {
+                if (!n.isDeleted() && n.usages().size() == 0 && GraphUtil.isFloatingNode().apply(n)) {
+                    n.safeDelete();
+                }
+            }
+        }
     }
 
     public interface IsImmutablePredicate {