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changeset 10547:01c902c59e38

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Replace unsafe load with readCompressed while reading the previous value in G1 pre barriers (Avoids guard insertion after guard lowering)
author Christos Kotselidis <christos.kotselidis@oracle.com>
date Thu, 27 Jun 2013 11:23:34 +0200
parents a6d6e6afd897
children 74c33d164767
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java
diffstat 1 files changed, 1 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Thu Jun 27 11:22:27 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Thu Jun 27 11:23:34 2013 +0200
@@ -111,7 +111,7 @@
             // If the previous value has to be loaded (before the write), the load is issued.
             // The load is always issued except the cases of CAS and referent field.
             if (doLoad) {
-                previousOop = (Word) Word.fromObject(UnsafeLoadNode.load(field, 0, 0, Kind.Object));
+                previousOop = (Word) Word.fromObject(field.readObjectCompressed(0));
             }
             // If the previous value is null the barrier should not be issued.
             if (previousOop.notEqual(0)) {