diff --git a/vm/compiler/IntermediateRep.c b/vm/compiler/IntermediateRep.c
new file mode 100644
index 0000000..2596aab
--- /dev/null
+++ b/vm/compiler/IntermediateRep.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Dalvik.h"
+#include "CompilerInternals.h"
+
+/* Allocate a new basic block */
+BasicBlock *dvmCompilerNewBB(BBType blockType)
+{
+    BasicBlock *bb = dvmCompilerNew(sizeof(BasicBlock), true);
+    bb->blockType = blockType;
+    return bb;
+}
+
+/* Insert an MIR instruction to the end of a basic block */
+void dvmCompilerAppendMIR(BasicBlock *bb, MIR *mir)
+{
+    if (bb->firstMIRInsn == NULL) {
+        assert(bb->firstMIRInsn == NULL);
+        bb->lastMIRInsn = bb->firstMIRInsn = mir;
+        mir->prev = mir->next = NULL;
+    } else {
+        bb->lastMIRInsn->next = mir;
+        mir->prev = bb->lastMIRInsn;
+        mir->next = NULL;
+        bb->lastMIRInsn = mir;
+    }
+}
+
+/*
+ * Append an LIR instruction to the LIR list maintained by a compilation
+ * unit
+ */
+void dvmCompilerAppendLIR(CompilationUnit *cUnit, LIR *lir)
+{
+    if (cUnit->firstLIRInsn == NULL) {
+        assert(cUnit->lastLIRInsn == NULL);
+        cUnit->lastLIRInsn = cUnit->firstLIRInsn = lir;
+        lir->prev = lir->next = NULL;
+    } else {
+        cUnit->lastLIRInsn->next = lir;
+        lir->prev = cUnit->lastLIRInsn;
+        lir->next = NULL;
+        cUnit->lastLIRInsn = lir;
+    }
+}