# HG changeset patch
# User Lukas Stadler <lukas.stadler@jku.at>
# Date 1375817338 -7200
# Node ID 038a598da996c566b0d33575e694b65734752aff
# Parent  679ba643aa7130b7f1863b01b33a92083b51c0df
fix lowering of StoreIndexedNode (anchor read of element klass)

diff -r 679ba643aa71 -r 038a598da996 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Tue Aug 06 10:50:53 2013 -0700
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Tue Aug 06 21:28:58 2013 +0200
@@ -623,7 +623,12 @@
                 } else {
                     LoadHubNode arrayClass = graph.add(new LoadHubNode(array, wordKind));
                     LocationNode location = ConstantLocationNode.create(FINAL_LOCATION, wordKind, config.arrayClassElementOffset, graph);
-                    FloatingReadNode arrayElementKlass = graph.unique(new FloatingReadNode(arrayClass, location, null, StampFactory.forKind(wordKind())));
+                    /*
+                     * Anchor the read of the element klass to the cfg, because it is only valid
+                     * when arrayClass is an object class, which might not be the case in other
+                     * parts of the compiled method.
+                     */
+                    FloatingReadNode arrayElementKlass = graph.unique(new FloatingReadNode(arrayClass, location, BeginNode.prevBegin(storeIndexed), StampFactory.forKind(wordKind())));
                     CheckCastDynamicNode checkcast = graph.add(new CheckCastDynamicNode(arrayElementKlass, value, true));
                     graph.addBeforeFixed(storeIndexed, checkcast);
                     graph.addBeforeFixed(checkcast, arrayClass);