# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1423009611 -3600
# Node ID 0b15114268c8eae5a61e868bdca2fc00be7a52da
# Parent  9e07d52199442f6b0540f3ada3748722fe69212f
Draft for LoadFieldPlugin.

diff -r 9e07d5219944 -r 0b15114268c8 graal/com.oracle.graal.java/src/com/oracle/graal/java/AbstractBytecodeParser.java
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/AbstractBytecodeParser.java	Wed Feb 04 00:55:08 2015 +0100
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/AbstractBytecodeParser.java	Wed Feb 04 01:26:51 2015 +0100
@@ -36,6 +36,7 @@
 import com.oracle.graal.compiler.common.calc.*;
 import com.oracle.graal.debug.*;
 import com.oracle.graal.java.BciBlockMapping.BciBlock;
+import com.oracle.graal.nodes.*;
 import com.oracle.graal.options.*;
 import com.oracle.graal.phases.*;
 
@@ -687,7 +688,10 @@
         Kind kind = field.getKind();
         T receiver = frameState.apop();
         if ((field instanceof ResolvedJavaField) && ((ResolvedJavaField) field).getDeclaringClass().isInitialized()) {
-            appendOptimizedLoadField(kind, genLoadField(receiver, (ResolvedJavaField) field));
+            GraphBuilderPlugins.LoadFieldPlugin loadFieldPlugin = this.graphBuilderConfig.getLoadFieldPlugin();
+            if (loadFieldPlugin == null || !loadFieldPlugin.apply((GraphBuilderContext) this, (ValueNode) receiver, (ResolvedJavaField) field)) {
+                appendOptimizedLoadField(kind, genLoadField(receiver, (ResolvedJavaField) field));
+            }
         } else {
             handleUnresolvedLoadField(field, receiver);
         }
diff -r 9e07d5219944 -r 0b15114268c8 graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderConfiguration.java
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderConfiguration.java	Wed Feb 04 00:55:08 2015 +0100
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderConfiguration.java	Wed Feb 04 01:26:51 2015 +0100
@@ -37,6 +37,7 @@
     private final DebugInfoMode debugInfoMode;
     private final boolean doLivenessAnalysis;
     private final boolean inlineTrivial;
+    private GraphBuilderPlugins.LoadFieldPlugin loadFieldPlugin;
 
     public static enum DebugInfoMode {
         SafePointsOnly,
@@ -72,6 +73,12 @@
         this.inlineTrivial = inlineTrivial;
     }
 
+    public GraphBuilderConfiguration copy() {
+        GraphBuilderConfiguration result = new GraphBuilderConfiguration(eagerResolving, omitAllExceptionEdges, debugInfoMode, skippedExceptionTypes, doLivenessAnalysis, inlineTrivial);
+        result.loadFieldPlugin = loadFieldPlugin;
+        return result;
+    }
+
     public GraphBuilderConfiguration withSkippedExceptionTypes(ResolvedJavaType[] newSkippedExceptionTypes) {
         return new GraphBuilderConfiguration(eagerResolving, omitAllExceptionEdges, debugInfoMode, newSkippedExceptionTypes, doLivenessAnalysis, inlineTrivial);
     }
@@ -93,6 +100,14 @@
         return new GraphBuilderConfiguration(eagerResolving, omitAllExceptionEdges, debugInfoMode, skippedExceptionTypes, doLivenessAnalysis, newInlineTrivial);
     }
 
+    public GraphBuilderPlugins.LoadFieldPlugin getLoadFieldPlugin() {
+        return loadFieldPlugin;
+    }
+
+    public void setLoadFieldPlugin(GraphBuilderPlugins.LoadFieldPlugin loadFieldPlugin) {
+        this.loadFieldPlugin = loadFieldPlugin;
+    }
+
     public ResolvedJavaType[] getSkippedExceptionTypes() {
         return skippedExceptionTypes;
     }
diff -r 9e07d5219944 -r 0b15114268c8 graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPlugins.java
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPlugins.java	Wed Feb 04 00:55:08 2015 +0100
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPlugins.java	Wed Feb 04 01:26:51 2015 +0100
@@ -36,6 +36,10 @@
  */
 public interface GraphBuilderPlugins {
 
+    public interface LoadFieldPlugin extends GraphBuilderPlugin {
+        boolean apply(GraphBuilderContext builder, ValueNode receiver, ResolvedJavaField field);
+    }
+
     /**
      * Plugin for handling a method invocation.
      */
diff -r 9e07d5219944 -r 0b15114268c8 graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/PartialEvaluator.java
--- a/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/PartialEvaluator.java	Wed Feb 04 00:55:08 2015 +0100
+++ b/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/PartialEvaluator.java	Wed Feb 04 01:26:51 2015 +0100
@@ -140,9 +140,20 @@
         return graph;
     }
 
+    private static final GraphBuilderPlugins.LoadFieldPlugin loadFieldPlugin = new GraphBuilderPlugins.LoadFieldPlugin() {
+
+        public boolean apply(GraphBuilderContext builder, ValueNode receiver, ResolvedJavaField field) {
+            System.out.println("Load field plugin called for receiver: " + receiver + " and field " + field);
+            return false;
+        }
+
+    };
+
     @SuppressWarnings("unused")
     private void fastPartialEvaluation(OptimizedCallTarget callTarget, Assumptions assumptions, StructuredGraph graph, PhaseContext baseContext, HighTierContext tierContext) {
-        new GraphBuilderPhase.Instance(providers.getMetaAccess(), providers.getStampProvider(), new Assumptions(false), configForRoot, TruffleCompilerImpl.Optimizations).apply(graph);
+        GraphBuilderConfiguration newConfig = configForRoot.copy();
+        newConfig.setLoadFieldPlugin(loadFieldPlugin);
+        new GraphBuilderPhase.Instance(providers.getMetaAccess(), providers.getStampProvider(), new Assumptions(false), newConfig, TruffleCompilerImpl.Optimizations).apply(graph);
         Debug.dump(graph, "After FastPE");
     }