# HG changeset patch
# User Christos Kotselidis <christos.kotselidis@oracle.com>
# Date 1370860095 -7200
# Node ID 3743ac6347ddd7e2c6de5b4b972347f3f4e64fd3
# Parent  01dd93600d02bd02f7ef359d8a2990d69a8e9c08
Small refactoring and comment addition

diff -r 01dd93600d02 -r 3743ac6347dd 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	Mon Jun 10 12:18:36 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Mon Jun 10 12:28:15 2013 +0200
@@ -612,7 +612,10 @@
             UnsafeLoadNode load = (UnsafeLoadNode) n;
             assert load.kind() != Kind.Illegal;
             IndexedLocationNode location = IndexedLocationNode.create(ANY_LOCATION, load.accessKind(), load.displacement(), load.offset(), graph, 1);
-            ReadNode memoryRead = graph.add(new ReadNode(load.object(), location, load.stamp(), WriteBarrierType.NONE, (!load.object().isNullConstant() && load.accessKind() == Kind.Object)));
+            // Unsafe Accesses to the metaspace or to any
+            // absolute address do not perform uncompression.
+            boolean compress = (!load.object().isNullConstant() && load.accessKind() == Kind.Object);
+            ReadNode memoryRead = graph.add(new ReadNode(load.object(), location, load.stamp(), WriteBarrierType.NONE, compress));
             // An unsafe read must not floating outside its block as may float above an explicit
             // null check on its object.
             memoryRead.setGuard(AbstractBeginNode.prevBegin(load));