# HG changeset patch
# User Christian Wimmer <christian.wimmer@oracle.com>
# Date 1349926193 25200
# Node ID 4dc9e468c8b077ba9351c7d5b5826fb3f7e025e7
# Parent  4667e5f25fce55ece97109da4f8a2aa25a0b5b96
The lowering currently does not support a FixedGuard as the usage of an InstanceOfNode

diff -r 4667e5f25fce -r 4dc9e468c8b0 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/InstanceOfNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/InstanceOfNode.java	Wed Oct 10 20:29:24 2012 -0700
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/InstanceOfNode.java	Wed Oct 10 20:29:53 2012 -0700
@@ -23,6 +23,7 @@
 package com.oracle.graal.nodes.java;
 
 import com.oracle.graal.api.meta.*;
+import com.oracle.graal.graph.*;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.calc.*;
 import com.oracle.graal.nodes.spi.*;
@@ -132,4 +133,12 @@
     public JavaTypeProfile profile() {
         return profile;
     }
+
+    @Override
+    public boolean verify() {
+        for (Node usage : usages()) {
+            assertTrue(usage instanceof IfNode || usage instanceof ConditionalNode, "unsupported usage: ", usage);
+        }
+        return super.verify();
+    }
 }
diff -r 4667e5f25fce -r 4dc9e468c8b0 graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java	Wed Oct 10 20:29:24 2012 -0700
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java	Wed Oct 10 20:29:53 2012 -0700
@@ -27,6 +27,7 @@
 import com.oracle.graal.debug.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.nodes.*;
+import com.oracle.graal.nodes.java.*;
 import com.oracle.graal.nodes.util.*;
 import com.oracle.graal.phases.*;
 
@@ -79,6 +80,10 @@
             IfNode ifNode = (IfNode) deoptBegin.predecessor();
             BeginNode otherBegin = ifNode.trueSuccessor();
             BooleanNode conditionNode = ifNode.compare();
+            if (conditionNode instanceof InstanceOfNode) {
+                // TODO The lowering currently does not support a FixedGuard as the usage of an InstanceOfNode. Relax this restriction.
+                return;
+            }
             boolean negated = false;
             if (deoptBegin == ifNode.trueSuccessor()) {
                 negated = true;