--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalCompiler.java	Tue Apr 23 16:56:31 2013 +0200
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalCompiler.java	Tue Apr 23 17:49:04 2013 +0200
@@ -154,6 +154,9 @@
 
         plan.runPhases(PhasePosition.LOW_LEVEL, graph);
 
+        LowTierContext lowTierContext = new LowTierContext(runtime, assumptions, replacements, target);
+        Suites.DEFAULT.getLowTier().apply(graph, lowTierContext);
+
         new LoweringPhase(target, runtime, replacements, assumptions, LoweringType.AFTER_GUARDS).apply(graph);
 
         new FrameStateAssignmentPhase().apply(graph);

--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/BasicCompilerConfiguration.java	Tue Apr 23 16:56:31 2013 +0200
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/BasicCompilerConfiguration.java	Tue Apr 23 17:49:04 2013 +0200
@@ -36,4 +36,8 @@
     public PhaseSuite<MidTierContext> createMidTier() {
         return new MidTier();
     }
+
+    public PhaseSuite<LowTierContext> createLowTier() {
+        return new LowTier();
+    }
 }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/LowTier.java	Tue Apr 23 17:49:04 2013 +0200
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2013, 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.phases;
+
+import com.oracle.graal.phases.*;
+import com.oracle.graal.phases.tiers.*;
+
+public class LowTier extends PhaseSuite<LowTierContext> {
+
+    public LowTier() {
+    }
+}

--- a/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/tiers/CompilerConfiguration.java	Tue Apr 23 16:56:31 2013 +0200
+++ b/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/tiers/CompilerConfiguration.java	Tue Apr 23 17:49:04 2013 +0200
@@ -29,4 +29,6 @@
     PhaseSuite<HighTierContext> createHighTier();
 
     PhaseSuite<MidTierContext> createMidTier();
+
+    PhaseSuite<LowTierContext> createLowTier();
 }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/tiers/LowTierContext.java	Tue Apr 23 17:49:04 2013 +0200
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2013, 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.phases.tiers;
+
+import com.oracle.graal.api.code.*;
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.nodes.spi.*;
+
+public class LowTierContext extends PhaseContext {
+
+    private final Replacements replacements;
+    private final TargetDescription target;
+
+    public LowTierContext(MetaAccessProvider runtime, Assumptions assumptions, Replacements replacements, TargetDescription target) {
+        super(runtime, assumptions);
+        this.replacements = replacements;
+        this.target = target;
+    }
+
+    public Replacements getReplacements() {
+        return replacements;
+    }
+
+    public TargetDescription getTarget() {
+        return target;
+    }
+}

--- a/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/tiers/Suites.java	Tue Apr 23 16:56:31 2013 +0200
+++ b/graal/com.oracle.graal.phases/src/com/oracle/graal/phases/tiers/Suites.java	Tue Apr 23 17:49:04 2013 +0200
@@ -33,6 +33,7 @@
 
     private final PhaseSuite<HighTierContext> highTier;
     private final PhaseSuite<MidTierContext> midTier;
+    private final PhaseSuite<LowTierContext> lowTier;
 
     private static final Map<String, CompilerConfiguration> configurations;
 
@@ -44,6 +45,10 @@
         return midTier;
     }
 
+    public PhaseSuite<LowTierContext> getLowTier() {
+        return lowTier;
+    }
+
     static {
         configurations = new HashMap<>();
         for (CompilerConfiguration config : ServiceLoader.loadInstalled(CompilerConfiguration.class)) {
@@ -60,6 +65,7 @@
     private Suites(CompilerConfiguration config) {
         highTier = config.createHighTier();
         midTier = config.createMidTier();
+        lowTier = config.createLowTier();
     }
 
     public static Suites createDefaultSuites() {