# HG changeset patch
# User Christos Kotselidis <christos.kotselidis@oracle.com>
# Date 1365447516 -7200
# Node ID 0186eb348be20cc1db129a22eb7e9f187dad19a6
# Parent  876a449f17abee33b61986e3b91a03eb607b3a1c
Remove FieldWriteBarrier

diff -r 876a449f17ab -r 0186eb348be2 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 Apr 08 20:52:04 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Mon Apr 08 20:58:36 2013 +0200
@@ -698,8 +698,6 @@
             monitorSnippets.lower((MonitorEnterNode) n, tool);
         } else if (n instanceof MonitorExitNode) {
             monitorSnippets.lower((MonitorExitNode) n, tool);
-        } else if (n instanceof FieldWriteBarrier) {
-            writeBarrierSnippets.lower((FieldWriteBarrier) n, tool);
         } else if (n instanceof ArrayWriteBarrier) {
             writeBarrierSnippets.lower((ArrayWriteBarrier) n, tool);
         } else if (n instanceof TLABAllocateNode) {
diff -r 876a449f17ab -r 0186eb348be2 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/FieldWriteBarrier.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/FieldWriteBarrier.java	Mon Apr 08 20:52:04 2013 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,45 +0,0 @@
-/*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-package com.oracle.graal.hotspot.nodes;
-
-import com.oracle.graal.nodes.*;
-import com.oracle.graal.nodes.spi.*;
-import com.oracle.graal.nodes.type.*;
-
-public final class FieldWriteBarrier extends FixedWithNextNode implements Lowerable {
-
-    @Input private ValueNode object;
-
-    public ValueNode getObject() {
-        return object;
-    }
-
-    public FieldWriteBarrier(ValueNode object) {
-        super(StampFactory.forVoid());
-        this.object = object;
-    }
-
-    public void lower(LoweringTool generator) {
-        generator.getRuntime().lower(this, generator);
-    }
-}
diff -r 876a449f17ab -r 0186eb348be2 graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Mon Apr 08 20:52:04 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Mon Apr 08 20:58:36 2013 +0200
@@ -40,21 +40,6 @@
 public class WriteBarrierSnippets implements Snippets {
 
     @Snippet
-    public static void serialFieldWriteBarrier(@Parameter("object") Object obj) {
-        Object object = FixedValueAnchorNode.getObject(obj);
-        Pointer oop = Word.fromObject(object);
-        Word base = (Word) oop.unsignedShiftRight(cardTableShift());
-        long startAddress = cardTableStart();
-        int displacement = 0;
-        if (((int) startAddress) == startAddress) {
-            displacement = (int) startAddress;
-        } else {
-            base = base.add(Word.unsigned(cardTableStart()));
-        }
-        base.writeByte(displacement, (byte) 0);
-    }
-
-    @Snippet
     public static void serialArrayWriteBarrier(@Parameter("object") Object obj, @Parameter("location") Object location, @ConstantParameter("usePrecise") boolean usePrecise) {
         Object object = FixedValueAnchorNode.getObject(obj);
         Pointer oop;
@@ -76,12 +61,10 @@
 
     public static class Templates extends AbstractTemplates<WriteBarrierSnippets> {
 
-        private final ResolvedJavaMethod serialFieldWriteBarrier;
         private final ResolvedJavaMethod serialArrayWriteBarrier;
 
         public Templates(CodeCacheProvider runtime, Replacements replacements, TargetDescription target) {
             super(runtime, replacements, target, WriteBarrierSnippets.class);
-            serialFieldWriteBarrier = snippet("serialFieldWriteBarrier", Object.class);
             serialArrayWriteBarrier = snippet("serialArrayWriteBarrier", Object.class, Object.class, boolean.class);
         }
 
@@ -95,15 +78,5 @@
             SnippetTemplate template = cache.get(key);
             template.instantiate(runtime, arrayWriteBarrier, DEFAULT_REPLACER, arguments);
         }
-
-        public void lower(FieldWriteBarrier fieldWriteBarrier, @SuppressWarnings("unused") LoweringTool tool) {
-            ResolvedJavaMethod method = serialFieldWriteBarrier;
-            Key key = new Key(method);
-            Arguments arguments = new Arguments();
-            arguments.add("object", fieldWriteBarrier.getObject());
-            SnippetTemplate template = cache.get(key);
-            template.instantiate(runtime, fieldWriteBarrier, DEFAULT_REPLACER, arguments);
-        }
-
     }
 }