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changeset 3475:0da7f6b247c9

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Intrinsify Unsafe.getObject(Object,long) and Unsafe.putObject(Object,long,Object)
author Peter Hofer <peter.hofer@jku.at>
date Wed, 03 Aug 2011 16:28:19 +0200
parents b9f76db5ac53
children 65981c23c1d6 561f5b2940b1
files graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/LocationNode.java graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/HotSpotRuntime.java graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/nodes/UnsafeLoad.java graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/nodes/UnsafeStore.java
diffstat 4 files changed, 237 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/LocationNode.java	Mon Aug 01 13:56:56 2011 +0200
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/LocationNode.java	Wed Aug 03 16:28:19 2011 +0200
@@ -34,6 +34,7 @@
     private static final int INPUT_INDEX = 0;
     private static final int SUCCESSOR_COUNT = 0;
 
+    public static final Object UNSAFE_ACCESS_LOCATION = new Object();
     public static final Object FINAL_LOCATION = new Object();
 
     public static Object getArrayLocation(CiKind elementKind) {
@@ -41,6 +42,7 @@
     }
 
     private int displacement;
+    private boolean indexScalingEnabled = true;
     private CiKind valueKind;
     private Object locationIdentity;
 
@@ -48,6 +50,20 @@
         return displacement;
     }
 
+    /**
+     * @return whether scaling of the index by the value kind's size is enabled (the default) or disabled.
+     */
+    public boolean indexScalingEnabled() {
+        return indexScalingEnabled;
+    }
+
+    /**
+     * Enables or disables scaling of the index by the value kind's size. Has no effect if the index input is not used.
+     */
+    public void setIndexScalingEnabled(boolean enable) {
+        this.indexScalingEnabled = enable;
+    }
+
     public Value index() {
         return (Value) inputs().get(super.inputCount() + INPUT_INDEX);
     }
@@ -95,7 +111,9 @@
         Scale indexScale = Scale.Times1;
         if (this.index() != null) {
             indexValue = lirGenerator.load(this.index());
-            indexScale = Scale.fromInt(valueKind.sizeInBytes(lirGenerator.target().wordSize));
+            if (indexScalingEnabled) {
+                indexScale = Scale.fromInt(valueKind.sizeInBytes(lirGenerator.target().wordSize));
+            }
         }
         return new CiAddress(valueKind, lirGenerator.load(object), indexValue, indexScale, displacement);
     }
--- a/graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/HotSpotRuntime.java	Mon Aug 01 13:56:56 2011 +0200
+++ b/graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/HotSpotRuntime.java	Wed Aug 03 16:28:19 2011 +0200
@@ -337,6 +337,31 @@
             }
             storeIndexed.replaceAtPredecessors(anchor);
             storeIndexed.delete();
+        } else if (n instanceof UnsafeLoad) {
+            UnsafeLoad load = (UnsafeLoad) n;
+            Graph graph = load.graph();
+            assert load.kind != CiKind.Illegal;
+            LocationNode location = LocationNode.create(LocationNode.UNSAFE_ACCESS_LOCATION, load.kind, 0, graph);
+            location.setIndex(load.offset());
+            location.setIndexScalingEnabled(false);
+            ReadNode memoryRead = new ReadNode(load.kind.stackKind(), load.object(), location, graph);
+            memoryRead.setGuard((GuardNode) tool.createGuard(new IsNonNull(load.object(), graph)));
+            memoryRead.setNext(load.next());
+            load.replaceAndDelete(memoryRead);
+        } else if (n instanceof UnsafeStore) {
+            UnsafeStore store = (UnsafeStore) n;
+            Graph graph = store.graph();
+            assert store.kind != CiKind.Illegal;
+            LocationNode location = LocationNode.create(LocationNode.UNSAFE_ACCESS_LOCATION, store.kind, 0, graph);
+            location.setIndex(store.offset());
+            location.setIndexScalingEnabled(false);
+            WriteNode write = new WriteNode(store.kind.stackKind(), store.object(), store.value(), location, graph);
+            FieldWriteBarrier barrier = new FieldWriteBarrier(store.object(), graph);
+            barrier.setNext(store.next());
+            write.setNext(barrier);
+            write.setStateAfter(store.stateAfter());
+            store.replaceAtPredecessors(write);
+            store.delete();
         }
     }
 
@@ -514,6 +539,29 @@
                     graph.setReturn(ret);
                     intrinsicGraphs.put(method, graph);
                 }
+            } else if (holderName.equals("Lsun/misc/Unsafe;")) {
+                if (fullName.equals("getObject(Ljava/lang/Object;J)Ljava/lang/Object;")) {
+                    CompilerGraph graph = new CompilerGraph(this);
+                    Local object = new Local(CiKind.Object, 1, graph);
+                    Local offset = new Local(CiKind.Long, 2, graph);
+                    UnsafeLoad load = new UnsafeLoad(object, offset, CiKind.Object, graph);
+                    Return ret = new Return(load, graph);
+                    load.setNext(ret);
+                    graph.start().setNext(load);
+                    graph.setReturn(ret);
+                    intrinsicGraphs.put(method, graph);
+                } else if (fullName.equals("putObject(Ljava/lang/Object;JLjava/lang/Object;)V")) {
+                    CompilerGraph graph = new CompilerGraph(this);
+                    Local object = new Local(CiKind.Object, 1, graph);
+                    Local offset = new Local(CiKind.Long, 2, graph);
+                    Local value = new Local(CiKind.Object, 3, graph);
+                    UnsafeStore store = new UnsafeStore(object, offset, value, CiKind.Object, graph);
+                    Return ret = new Return(null, graph);
+                    store.setNext(ret);
+                    graph.start().setNext(store);
+                    graph.setReturn(ret);
+                    intrinsicGraphs.put(method, graph);
+                }
             }
 
             if (!intrinsicGraphs.containsKey(method)) {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/nodes/UnsafeLoad.java	Wed Aug 03 16:28:19 2011 +0200
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2011, 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.max.graal.runtime.nodes;
+
+import com.oracle.max.graal.compiler.ir.*;
+import com.oracle.max.graal.compiler.phases.*;
+import com.oracle.max.graal.compiler.phases.LoweringPhase.*;
+import com.oracle.max.graal.graph.*;
+import com.sun.cri.ci.*;
+
+/**
+ * Load of a value from a location specified as an offset relative to an object.
+ */
+public class UnsafeLoad extends StateSplit {
+
+    private static final int INPUT_COUNT = 2;
+    private static final int INPUT_OBJECT = 0;
+    private static final int INPUT_OFFSET = 1;
+
+    private static final int SUCCESSOR_COUNT = 0;
+
+    public UnsafeLoad(Value object, Value offset, CiKind kind, Graph graph) {
+        super(kind, INPUT_COUNT, SUCCESSOR_COUNT, graph);
+        setObject(object);
+        setOffset(offset);
+    }
+
+    public Value object() {
+        return (Value) inputs().get(super.inputCount() + INPUT_OBJECT);
+    }
+
+    public Value setObject(Value object) {
+        return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, object);
+    }
+
+    public Value offset() {
+        return (Value) inputs().get(super.inputCount() + INPUT_OFFSET);
+    }
+
+    public Value setOffset(Value offset) {
+        return (Value) inputs().set(super.inputCount() + INPUT_OFFSET, offset);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public <T extends Op> T lookup(Class<T> clazz) {
+        if (clazz == LoweringOp.class) {
+            return (T) LoweringPhase.DELEGATE_TO_RUNTIME;
+        }
+        return super.lookup(clazz);
+    }
+
+    @Override
+    public Node copy(Graph into) {
+        UnsafeLoad x = new UnsafeLoad(null, null, kind, into);
+        super.copyInto(x);
+        return x;
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.runtime/src/com/oracle/max/graal/runtime/nodes/UnsafeStore.java	Wed Aug 03 16:28:19 2011 +0200
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2011, 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.max.graal.runtime.nodes;
+
+import com.oracle.max.graal.compiler.ir.*;
+import com.oracle.max.graal.compiler.phases.*;
+import com.oracle.max.graal.compiler.phases.LoweringPhase.*;
+import com.oracle.max.graal.graph.*;
+import com.sun.cri.ci.*;
+
+/**
+ * Store of a value at a location specified as an offset relative to an object.
+ */
+public class UnsafeStore extends StateSplit {
+
+    private static final int INPUT_COUNT = 3;
+    private static final int INPUT_OBJECT = 0;
+    private static final int INPUT_OFFSET = 1;
+    private static final int INPUT_VALUE = 2;
+
+    private static final int SUCCESSOR_COUNT = 0;
+
+    public UnsafeStore(Value object, Value offset, Value value, CiKind kind, Graph graph) {
+        super(kind, INPUT_COUNT, SUCCESSOR_COUNT, graph);
+        setObject(object);
+        setOffset(offset);
+        setValue(value);
+    }
+
+    public Value object() {
+        return (Value) inputs().get(super.inputCount() + INPUT_OBJECT);
+    }
+
+    public Value setObject(Value object) {
+        return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, object);
+    }
+
+    public Value offset() {
+        return (Value) inputs().get(super.inputCount() + INPUT_OFFSET);
+    }
+
+    public Value setOffset(Value offset) {
+        return (Value) inputs().set(super.inputCount() + INPUT_OFFSET, offset);
+    }
+
+    public Value value() {
+        return (Value) inputs().get(super.inputCount() + INPUT_VALUE);
+    }
+
+    public Value setValue(Value value) {
+        return (Value) inputs().set(super.inputCount() + INPUT_VALUE, value);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public <T extends Op> T lookup(Class<T> clazz) {
+        if (clazz == LoweringOp.class) {
+            return (T) LoweringPhase.DELEGATE_TO_RUNTIME;
+        }
+        return super.lookup(clazz);
+    }
+
+    @Override
+    public Node copy(Graph into) {
+        UnsafeStore x = new UnsafeStore(null, null, null, kind, into);
+        super.copyInto(x);
+        return x;
+    }
+
+}