# HG changeset patch
# User Roland Schatz <roland.schatz@oracle.com>
# Date 1393426431 -3600
# Node ID 3be1d30dd40f441396f3f424e2099a8f3c8d32ae
# Parent  2b5b3fcd65ba82e5d97ca8ec12c6c0c27892792f
Keep stamp when canonicalizing nodes to constants.

diff -r 2b5b3fcd65ba -r 3be1d30dd40f graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java	Wed Feb 26 11:20:50 2014 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java	Wed Feb 26 15:53:51 2014 +0100
@@ -151,6 +151,16 @@
         }
     }
 
+    public static ConstantNode forConstant(Stamp stamp, Constant constant, MetaAccessProvider metaAccess, StructuredGraph graph) {
+        if (stamp instanceof PrimitiveStamp) {
+            return forPrimitive(stamp, constant, graph);
+        } else {
+            ConstantNode ret = forConstant(constant, metaAccess, graph);
+            assert ret.stamp().isCompatible(stamp);
+            return ret;
+        }
+    }
+
     /**
      * Returns a node for a Java primitive.
      */
diff -r 2b5b3fcd65ba -r 3be1d30dd40f graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/CanonicalizerPhase.java
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/CanonicalizerPhase.java	Wed Feb 26 11:20:50 2014 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/CanonicalizerPhase.java	Wed Feb 26 15:53:51 2014 +0100
@@ -185,7 +185,7 @@
                             boolean improvedStamp = tryInferStamp(valueNode);
                             Constant constant = valueNode.stamp().asConstant();
                             if (constant != null && !(node instanceof ConstantNode)) {
-                                performReplacement(valueNode, ConstantNode.forConstant(constant, context.getMetaAccess(), valueNode.graph()));
+                                performReplacement(valueNode, ConstantNode.forConstant(valueNode.stamp(), constant, context.getMetaAccess(), valueNode.graph()));
                             } else if (improvedStamp) {
                                 // the improved stamp may enable additional canonicalization
                                 tryCanonicalize(valueNode, nodeClass);