--- a/graal/com.oracle.graal.baseline/src/com/oracle/graal/baseline/BaselineCompiler.java	Mon Mar 24 11:58:59 2014 +0100
+++ b/graal/com.oracle.graal.baseline/src/com/oracle/graal/baseline/BaselineCompiler.java	Mon Mar 24 13:15:42 2014 +0100
@@ -57,7 +57,7 @@
  * The {@code GraphBuilder} class parses the bytecode of a method and builds the IR graph.
  */
 @SuppressWarnings("all")
-public class BaselineCompiler {
+public class BaselineCompiler implements BytecodeParser<BciBlock> {
 
     public BaselineCompiler(GraphBuilderConfiguration graphBuilderConfig, MetaAccessProvider metaAccess) {
         this.graphBuilderConfig = graphBuilderConfig;
@@ -176,17 +176,11 @@
         try (Scope ds = Debug.scope("BackEnd", lir)) {
             try (Scope s = Debug.scope("LIRGen", lirGen)) {
 
-                lirGen.emitPrologue(method);
-
                 // possibly add all the arguments to slots in the local variable array
 
                 for (BciBlock block : blockMap.blocks) {
 
-                    lirGen.doBlockStart(block);
-
-                    processBlock(block);
-
-                    lirGen.doBlockEnd(block);
+                    lirGen.doBlock(block, method, this);
                 }
                 // indent.outdent();
 
@@ -508,7 +502,7 @@
         throw GraalInternalError.unimplemented();
     }
 
-    private void processBlock(BciBlock block) {
+    public void processBlock(BciBlock block) {
         Indent indent = Debug.logAndIndent("Parsing block %s  firstInstruction: %s  loopHeader: %b", block, block.firstInstruction, block.isLoopHeader);
         currentBlock = block;
         iterateBytecodesForBlock(block);

--- a/graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXLIRGenerator.java	Mon Mar 24 11:58:59 2014 +0100
+++ b/graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXLIRGenerator.java	Mon Mar 24 13:15:42 2014 +0100
@@ -172,7 +172,7 @@
     }
 
     @Override
-    public void emitPrologue(ResolvedJavaMethod method) {
+    protected void emitPrologue(ResolvedJavaMethod method) {
         // Need to emit .param directives based on incoming arguments and return value
         CallingConvention incomingArguments = getCallingConvention();
         Object returnObject = incomingArguments.getReturn();

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/gen/BytecodeParser.java	Mon Mar 24 13:15:42 2014 +0100
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2014, 2014, 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.compiler.gen;
+
+import com.oracle.graal.nodes.cfg.*;
+
+public interface BytecodeParser<T extends AbstractBlock<T>> {
+    void processBlock(T block);
+}

--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/gen/LIRGenerator.java	Mon Mar 24 11:58:59 2014 +0100
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/gen/LIRGenerator.java	Mon Mar 24 13:15:42 2014 +0100
@@ -442,18 +442,20 @@
     /**
      * For Baseline compilation
      */
-    /*
-     * public void doBlock(AbstractBlock<?> block, ResolvedJavaMethod method) { doBlockStart(block);
-     * 
-     * if (block == res.getLIR().getControlFlowGraph().getStartBlock()) { assert
-     * block.getPredecessorCount() == 0; emitPrologue(method); } else { assert
-     * block.getPredecessorCount() > 0; }
-     * 
-     * // add instruction Value add = emitAdd(Constant.forLong(42), Constant.forLong(73));
-     * emitReturn(add);
-     * 
-     * doBlockEnd(block); }
-     */
+
+    public <T extends AbstractBlock<T>> void doBlock(T block, ResolvedJavaMethod method, BytecodeParser<T> parser) {
+        doBlockStart(block);
+
+        if (block == res.getLIR().getControlFlowGraph().getStartBlock()) {
+            assert block.getPredecessorCount() == 0;
+            emitPrologue(method);
+        } else {
+            assert block.getPredecessorCount() > 0;
+        }
+        parser.processBlock(block);
+
+        doBlockEnd(block);
+    }
 
     public void doBlock(Block block, StructuredGraph graph, BlockMap<List<ScheduledNode>> blockMap) {
         doBlockStart(block);
@@ -570,7 +572,7 @@
         }
     }
 
-    public void emitPrologue(ResolvedJavaMethod method) {
+    protected void emitPrologue(ResolvedJavaMethod method) {
         CallingConvention incomingArguments = getCallingConvention();
 
         Value[] params = new Value[incomingArguments.getArgumentCount()];

--- a/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Mon Mar 24 11:58:59 2014 +0100
+++ b/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Mon Mar 24 13:15:42 2014 +0100
@@ -174,7 +174,7 @@
     }
 
     @Override
-    public void emitPrologue(ResolvedJavaMethod method) {
+    protected void emitPrologue(ResolvedJavaMethod method) {
 
         CallingConvention incomingArguments = getCallingConvention();