diff --git a/compiler/Android.mk b/compiler/Android.mk
index 7eb7f7e..27bc3a3 100644
--- a/compiler/Android.mk
+++ b/compiler/Android.mk
@@ -21,6 +21,7 @@
 LIBART_COMPILER_SRC_FILES := \
 	compiled_method.cc \
 	dex/local_value_numbering.cc \
+	dex/arena_allocator.cc \
 	dex/arena_bit_vector.cc \
 	dex/quick/arm/assemble_arm.cc \
 	dex/quick/arm/call_arm.cc \
@@ -80,10 +81,7 @@
 	llvm/runtime_support_builder.cc \
 	llvm/runtime_support_builder_arm.cc \
 	llvm/runtime_support_builder_x86.cc \
-	optimizing/builder.cc \
-	optimizing/nodes.cc \
 	trampolines/trampoline_compiler.cc \
-	utils/arena_allocator.cc \
 	utils/arm/assembler_arm.cc \
 	utils/arm/managed_register_arm.cc \
 	utils/assembler.cc \
diff --git a/compiler/utils/arena_allocator.cc b/compiler/dex/arena_allocator.cc
similarity index 98%
rename from compiler/utils/arena_allocator.cc
rename to compiler/dex/arena_allocator.cc
index ec41293..8d24439 100644
--- a/compiler/utils/arena_allocator.cc
+++ b/compiler/dex/arena_allocator.cc
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include "compiler_internals.h"
+#include "dex_file-inl.h"
 #include "arena_allocator.h"
 #include "base/logging.h"
 #include "base/mutex.h"
diff --git a/compiler/utils/arena_allocator.h b/compiler/dex/arena_allocator.h
similarity index 95%
rename from compiler/utils/arena_allocator.h
rename to compiler/dex/arena_allocator.h
index 56cedfe..d11d67c 100644
--- a/compiler/utils/arena_allocator.h
+++ b/compiler/dex/arena_allocator.h
@@ -14,13 +14,14 @@
  * limitations under the License.
  */
 
-#ifndef ART_COMPILER_UTILS_ARENA_ALLOCATOR_H_
-#define ART_COMPILER_UTILS_ARENA_ALLOCATOR_H_
+#ifndef ART_COMPILER_DEX_ARENA_ALLOCATOR_H_
+#define ART_COMPILER_DEX_ARENA_ALLOCATOR_H_
 
 #include <stdint.h>
 #include <stddef.h>
 
 #include "base/mutex.h"
+#include "compiler_enums.h"
 #include "mem_map.h"
 
 namespace art {
@@ -154,4 +155,4 @@
 
 }  // namespace art
 
-#endif  // ART_COMPILER_UTILS_ARENA_ALLOCATOR_H_
+#endif  // ART_COMPILER_DEX_ARENA_ALLOCATOR_H_
diff --git a/compiler/utils/arena_allocator_test.cc b/compiler/dex/arena_allocator_test.cc
similarity index 92%
rename from compiler/utils/arena_allocator_test.cc
rename to compiler/dex/arena_allocator_test.cc
index b76fe74..63dc615 100644
--- a/compiler/utils/arena_allocator_test.cc
+++ b/compiler/dex/arena_allocator_test.cc
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-#include "dex/arena_bit_vector.h"
+#include "arena_allocator.h"
+#include "arena_bit_vector.h"
 #include "gtest/gtest.h"
-#include "utils/arena_allocator.h"
 
 namespace art {
 
diff --git a/compiler/dex/arena_bit_vector.h b/compiler/dex/arena_bit_vector.h
index e904406..4b2193a 100644
--- a/compiler/dex/arena_bit_vector.h
+++ b/compiler/dex/arena_bit_vector.h
@@ -17,9 +17,9 @@
 #ifndef ART_COMPILER_DEX_ARENA_BIT_VECTOR_H_
 #define ART_COMPILER_DEX_ARENA_BIT_VECTOR_H_
 
+#include "arena_allocator.h"
 #include "base/bit_vector.h"
 #include "compiler_enums.h"
-#include "utils/arena_allocator.h"
 
 namespace art {
 
diff --git a/compiler/dex/backend.h b/compiler/dex/backend.h
index 596b3c9..01959b7 100644
--- a/compiler/dex/backend.h
+++ b/compiler/dex/backend.h
@@ -17,10 +17,10 @@
 #ifndef ART_COMPILER_DEX_BACKEND_H_
 #define ART_COMPILER_DEX_BACKEND_H_
 
-namespace art {
+#include "compiled_method.h"
+#include "arena_allocator.h"
 
-class ArenaAllocator;
-class CompiledMethod;
+namespace art {
 
 class Backend {
   public:
diff --git a/compiler/dex/compiler_ir.h b/compiler/dex/compiler_ir.h
index ded8005..ea8eb1c 100644
--- a/compiler/dex/compiler_ir.h
+++ b/compiler/dex/compiler_ir.h
@@ -19,6 +19,7 @@
 
 #include <vector>
 #include <llvm/IR/Module.h>
+#include "arena_allocator.h"
 #include "compiler_enums.h"
 #include "dex/quick/mir_to_lir.h"
 #include "dex_instruction.h"
@@ -28,7 +29,6 @@
 #include "llvm/ir_builder.h"
 #include "safe_map.h"
 #include "base/timing_logger.h"
-#include "utils/arena_allocator.h"
 
 namespace art {
 
diff --git a/compiler/utils/growable_array.h b/compiler/dex/growable_array.h
similarity index 91%
rename from compiler/utils/growable_array.h
rename to compiler/dex/growable_array.h
index b591870..6ed207c 100644
--- a/compiler/utils/growable_array.h
+++ b/compiler/dex/growable_array.h
@@ -14,15 +14,18 @@
  * limitations under the License.
  */
 
-#ifndef ART_COMPILER_UTILS_GROWABLE_ARRAY_H_
-#define ART_COMPILER_UTILS_GROWABLE_ARRAY_H_
+#ifndef ART_COMPILER_DEX_GROWABLE_ARRAY_H_
+#define ART_COMPILER_DEX_GROWABLE_ARRAY_H_
 
 #include <stdint.h>
 #include <stddef.h>
+#include "compiler_enums.h"
 #include "arena_allocator.h"
 
 namespace art {
 
+struct CompilationUnit;
+
 // Type of growable list for memory tuning.
 enum OatListKind {
   kGrowableArrayMisc = 0,
@@ -106,20 +109,7 @@
         Resize(num_used_ + 1);
       }
       elem_list_[num_used_++] = elem;
-    }
-
-    void InsertAt(size_t index, T elem) {
-      DCHECK(index <= Size());
-      Insert(elem);
-      for (size_t i = Size() - 1; i > index; --i) {
-        elem_list_[i] = elem_list_[i - 1];
-      }
-      elem_list_[index] = elem;
-    }
-
-    void Add(T elem) {
-      Insert(elem);
-    }
+    };
 
     T Get(size_t index) const {
       DCHECK_LT(index, num_used_);
@@ -183,4 +173,4 @@
 
 }  // namespace art
 
-#endif  // ART_COMPILER_UTILS_GROWABLE_ARRAY_H_
+#endif  // ART_COMPILER_DEX_GROWABLE_ARRAY_H_
diff --git a/compiler/dex/mir_graph.h b/compiler/dex/mir_graph.h
index d304db9..e866612 100644
--- a/compiler/dex/mir_graph.h
+++ b/compiler/dex/mir_graph.h
@@ -21,7 +21,7 @@
 #include "dex_instruction.h"
 #include "compiler_ir.h"
 #include "arena_bit_vector.h"
-#include "utils/growable_array.h"
+#include "growable_array.h"
 
 namespace art {
 
diff --git a/compiler/dex/quick/mir_to_lir.h b/compiler/dex/quick/mir_to_lir.h
index c60c394..729aaee 100644
--- a/compiler/dex/quick/mir_to_lir.h
+++ b/compiler/dex/quick/mir_to_lir.h
@@ -22,11 +22,11 @@
 #include "dex/compiler_enums.h"
 #include "dex/compiler_ir.h"
 #include "dex/backend.h"
+#include "dex/growable_array.h"
+#include "dex/arena_allocator.h"
 #include "driver/compiler_driver.h"
 #include "leb128_encoder.h"
 #include "safe_map.h"
-#include "utils/arena_allocator.h"
-#include "utils/growable_array.h"
 
 namespace art {
 
diff --git a/compiler/driver/compiler_driver.h b/compiler/driver/compiler_driver.h
index da4b69d..a9e029d 100644
--- a/compiler/driver/compiler_driver.h
+++ b/compiler/driver/compiler_driver.h
@@ -28,6 +28,7 @@
 #include "compiled_method.h"
 #include "compiler_backend.h"
 #include "dex_file.h"
+#include "dex/arena_allocator.h"
 #include "instruction_set.h"
 #include "invoke_type.h"
 #include "method_reference.h"
@@ -35,7 +36,6 @@
 #include "runtime.h"
 #include "safe_map.h"
 #include "thread_pool.h"
-#include "utils/arena_allocator.h"
 #include "utils/dedupe_set.h"
 
 namespace art {
diff --git a/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc
deleted file mode 100644
index 2c1091c..0000000
--- a/compiler/optimizing/builder.cc
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- *
- * Copyright (C) 2014 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 "dex_instruction.h"
-#include "builder.h"
-#include "nodes.h"
-
-namespace art {
-
-HGraph* HGraphBuilder::BuildGraph(const uint16_t* code_ptr, const uint16_t* code_end) {
-  graph_ = new (arena_) HGraph(arena_);
-
-  entry_block_ = new (arena_) HBasicBlock(graph_);
-  graph_->AddBlock(entry_block_);
-
-  exit_block_ = new (arena_) HBasicBlock(graph_);
-  // The exit block is added at the end of this method to ensure
-  // its id is the greatest. This is needed for dominator computation.
-
-  entry_block_->AddInstruction(new (arena_) HGoto(entry_block_));
-
-  current_block_ = new (arena_) HBasicBlock(graph_);
-  graph_->AddBlock(current_block_);
-  entry_block_->AddSuccessor(current_block_);
-
-  while (code_ptr < code_end) {
-    const Instruction& instruction = *Instruction::At(code_ptr);
-    if (!AnalyzeDexInstruction(instruction)) return nullptr;
-    code_ptr += instruction.SizeInCodeUnits();
-  }
-
-  exit_block_->AddInstruction(new (arena_) HExit(exit_block_));
-  graph_->AddBlock(exit_block_);
-  return graph_;
-}
-
-bool HGraphBuilder::AnalyzeDexInstruction(const Instruction& instruction) {
-  switch (instruction.Opcode()) {
-    case Instruction::RETURN_VOID:
-      current_block_->AddInstruction(new (arena_) HReturnVoid(current_block_));
-      current_block_->AddSuccessor(exit_block_);
-      current_block_ = nullptr;
-      break;
-    default:
-      return false;
-  }
-  return true;
-}
-
-}  // namespace art
diff --git a/compiler/optimizing/builder.h b/compiler/optimizing/builder.h
deleted file mode 100644
index 3e94fba..0000000
--- a/compiler/optimizing/builder.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- */
-
-#ifndef ART_COMPILER_OPTIMIZING_BUILDER_H_
-#define ART_COMPILER_OPTIMIZING_BUILDER_H_
-
-#include "utils/allocation.h"
-
-namespace art {
-
-class ArenaAllocator;
-class Instruction;
-class HBasicBlock;
-class HGraph;
-
-class HGraphBuilder : public ValueObject {
- public:
-  explicit HGraphBuilder(ArenaAllocator* arena)
-      : arena_(arena),
-        entry_block_(nullptr),
-        exit_block_(nullptr),
-        current_block_(nullptr),
-        graph_(nullptr) { }
-
-  HGraph* BuildGraph(const uint16_t* start, const uint16_t* end);
-
- private:
-  // Analyzes the dex instruction and adds HInstruction to the graph
-  // to execute that instruction. Returns whether the instruction can
-  // be handled.
-  bool AnalyzeDexInstruction(const Instruction& instruction);
-
-  ArenaAllocator* const arena_;
-  HBasicBlock* entry_block_;
-  HBasicBlock* exit_block_;
-  HBasicBlock* current_block_;
-  HGraph* graph_;
-
-  DISALLOW_COPY_AND_ASSIGN(HGraphBuilder);
-};
-
-}  // namespace art
-
-#endif  // ART_COMPILER_OPTIMIZING_BUILDER_H_
diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
deleted file mode 100644
index e7e9f47..0000000
--- a/compiler/optimizing/nodes.cc
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2014 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 "nodes.h"
-#include "utils/growable_array.h"
-
-namespace art {
-
-void HGraph::AddBlock(HBasicBlock* block) {
-  block->set_block_id(blocks_.Size());
-  blocks_.Add(block);
-}
-
-void HBasicBlock::AddInstruction(HInstruction* instruction) {
-  if (first_instruction_ == nullptr) {
-    DCHECK(last_instruction_ == nullptr);
-    first_instruction_ = last_instruction_ = instruction;
-  } else {
-    last_instruction_->next_ = instruction;
-    instruction->previous_ = last_instruction_;
-    last_instruction_ = instruction;
-  }
-}
-
-#define DEFINE_ACCEPT(name)                                                    \
-void H##name::Accept(HGraphVisitor* visitor) {                                 \
-  visitor->Visit##name(this);                                                  \
-}
-
-FOR_EACH_INSTRUCTION(DEFINE_ACCEPT)
-
-#undef DEFINE_ACCEPT
-
-void HGraphVisitor::VisitInsertionOrder() {
-  const GrowableArray<HBasicBlock*>* blocks = graph_->blocks();
-  for (size_t i = 0 ; i < blocks->Size(); i++) {
-    VisitBasicBlock(blocks->Get(i));
-  }
-}
-
-void HGraphVisitor::VisitBasicBlock(HBasicBlock* block) {
-  for (HInstructionIterator it(block); !it.Done(); it.Advance()) {
-    it.Current()->Accept(this);
-  }
-}
-
-}  // namespace art
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
deleted file mode 100644
index 9365670..0000000
--- a/compiler/optimizing/nodes.h
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- */
-
-#ifndef ART_COMPILER_OPTIMIZING_NODES_H_
-#define ART_COMPILER_OPTIMIZING_NODES_H_
-
-#include "utils/allocation.h"
-#include "utils/growable_array.h"
-
-namespace art {
-
-class HBasicBlock;
-class HInstruction;
-class HGraphVisitor;
-
-static const int kDefaultNumberOfBlocks = 8;
-static const int kDefaultNumberOfSuccessors = 2;
-static const int kDefaultNumberOfPredecessors = 2;
-
-// Control-flow graph of a method. Contains a list of basic blocks.
-class HGraph : public ArenaObject {
- public:
-  explicit HGraph(ArenaAllocator* arena)
-      : arena_(arena),
-        blocks_(arena, kDefaultNumberOfBlocks) { }
-
-  ArenaAllocator* arena() const { return arena_; }
-  const GrowableArray<HBasicBlock*>* blocks() const { return &blocks_; }
-
-  void AddBlock(HBasicBlock* block);
-
- private:
-  ArenaAllocator* const arena_;
-  GrowableArray<HBasicBlock*> blocks_;
-
-  DISALLOW_COPY_AND_ASSIGN(HGraph);
-};
-
-// A block in a method. Contains the list of instructions represented
-// as a double linked list. Each block knows its predecessors and
-// successors.
-class HBasicBlock : public ArenaObject {
- public:
-  explicit HBasicBlock(HGraph* graph)
-      : graph_(graph),
-        predecessors_(graph->arena(), kDefaultNumberOfPredecessors),
-        successors_(graph->arena(), kDefaultNumberOfSuccessors),
-        first_instruction_(nullptr),
-        last_instruction_(nullptr),
-        block_id_(-1) { }
-
-  const GrowableArray<HBasicBlock*>* predecessors() const {
-    return &predecessors_;
-  }
-
-  const GrowableArray<HBasicBlock*>* successors() const {
-    return &successors_;
-  }
-
-  HGraph* graph() const { return graph_; }
-
-  int block_id() const { return block_id_; }
-  void set_block_id(int id) { block_id_ = id; }
-
-  HInstruction* first_instruction() const { return first_instruction_; }
-  HInstruction* last_instruction() const { return last_instruction_; }
-
-  void AddSuccessor(HBasicBlock* block) {
-    successors_.Add(block);
-    block->predecessors_.Add(this);
-  }
-
-  void AddInstruction(HInstruction* instruction);
-
- private:
-  HGraph* const graph_;
-  GrowableArray<HBasicBlock*> predecessors_;
-  GrowableArray<HBasicBlock*> successors_;
-  HInstruction* first_instruction_;
-  HInstruction* last_instruction_;
-  int block_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(HBasicBlock);
-};
-
-#define FOR_EACH_INSTRUCTION(M)                            \
-  M(Exit)                                                  \
-  M(Goto)                                                  \
-  M(ReturnVoid)                                            \
-
-#define DECLARE_INSTRUCTION(type)                          \
-  virtual void Accept(HGraphVisitor* visitor);             \
-  virtual const char* DebugName() const { return #type; }  \
-
-class HInstruction : public ArenaObject {
- public:
-  explicit HInstruction(HBasicBlock* block)
-      : previous_(nullptr),
-        next_(nullptr) { }
-
-  HInstruction* next() const { return next_; }
-  HInstruction* previous() const { return previous_; }
-
-  virtual intptr_t InputCount() const  = 0;
-  virtual HInstruction* InputAt(intptr_t i) const = 0;
-
-  virtual void Accept(HGraphVisitor* visitor) = 0;
-  virtual const char* DebugName() const = 0;
-
- private:
-  HInstruction* previous_;
-  HInstruction* next_;
-
-  friend class HBasicBlock;
-
-  DISALLOW_COPY_AND_ASSIGN(HInstruction);
-};
-
-class HInstructionIterator : public ValueObject {
- public:
-  explicit HInstructionIterator(HBasicBlock* block)
-      : instruction_(block->first_instruction()) {
-    next_ = Done() ? nullptr : instruction_->next();
-  }
-
-  inline bool Done() const { return instruction_ == nullptr; }
-  inline HInstruction* Current() { return instruction_; }
-  inline void Advance() {
-    instruction_ = next_;
-    next_ = Done() ? nullptr : instruction_->next();
-  }
-
- private:
-  HInstruction* instruction_;
-  HInstruction* next_;
-};
-
-// An embedded container with N elements of type T.  Used (with partial
-// specialization for N=0) because embedded arrays cannot have size 0.
-template<typename T, intptr_t N>
-class EmbeddedArray {
- public:
-  EmbeddedArray() : elements_() { }
-
-  intptr_t length() const { return N; }
-
-  const T& operator[](intptr_t i) const {
-    ASSERT(i < length());
-    return elements_[i];
-  }
-
-  T& operator[](intptr_t i) {
-    ASSERT(i < length());
-    return elements_[i];
-  }
-
-  const T& At(intptr_t i) const {
-    return (*this)[i];
-  }
-
-  void SetAt(intptr_t i, const T& val) {
-    (*this)[i] = val;
-  }
-
- private:
-  T elements_[N];
-};
-
-template<typename T>
-class EmbeddedArray<T, 0> {
- public:
-  intptr_t length() const { return 0; }
-  const T& operator[](intptr_t i) const {
-    LOG(FATAL) << "Unreachable";
-    static T sentinel = 0;
-    return sentinel;
-  }
-  T& operator[](intptr_t i) {
-    LOG(FATAL) << "Unreachable";
-    static T sentinel = 0;
-    return sentinel;
-  }
-};
-
-template<intptr_t N>
-class HTemplateInstruction: public HInstruction {
- public:
-  HTemplateInstruction<N>(HBasicBlock* block)
-      : HInstruction(block),
-        inputs_() { }
-
-  virtual intptr_t InputCount() const { return N; }
-  virtual HInstruction* InputAt(intptr_t i) const { return inputs_[i]; }
-
- private:
-  EmbeddedArray<HInstruction*, N> inputs_;
-};
-
-// Represents dex's RETURN_VOID opcode. A HReturnVoid is a control flow
-// instruction that branches to the exit block.
-class HReturnVoid : public HTemplateInstruction<0> {
- public:
-  explicit HReturnVoid(HBasicBlock* block) : HTemplateInstruction<0>(block) { }
-
-  DECLARE_INSTRUCTION(ReturnVoid)
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HReturnVoid);
-};
-
-// The exit instruction is the only instruction of the exit block.
-// Instructions aborting the method (HTrow and HReturn) must branch to the
-// exit block.
-class HExit : public HTemplateInstruction<0> {
- public:
-  explicit HExit(HBasicBlock* block) : HTemplateInstruction<0>(block) { }
-
-  DECLARE_INSTRUCTION(Exit)
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HExit);
-};
-
-// Jumps from one block to another.
-class HGoto : public HTemplateInstruction<0> {
- public:
-  explicit HGoto(HBasicBlock* block) : HTemplateInstruction<0>(block) { }
-
-  DECLARE_INSTRUCTION(Goto)
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HGoto);
-};
-
-class HGraphVisitor : public ValueObject {
- public:
-  explicit HGraphVisitor(HGraph* graph) : graph_(graph) { }
-  virtual ~HGraphVisitor() { }
-
-  virtual void VisitInstruction(HInstruction* instruction) { }
-  virtual void VisitBasicBlock(HBasicBlock* block);
-
-  void VisitInsertionOrder();
-
-  // Visit functions for instruction classes.
-#define DECLARE_VISIT_INSTRUCTION(name)                                        \
-  virtual void Visit##name(H##name* instr) { VisitInstruction(instr); }
-
-  FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
-
-#undef DECLARE_VISIT_INSTRUCTION
-
- private:
-  HGraph* graph_;
-
-  DISALLOW_COPY_AND_ASSIGN(HGraphVisitor);
-};
-
-}  // namespace art
-
-#endif  // ART_COMPILER_OPTIMIZING_NODES_H_
diff --git a/compiler/optimizing/pretty_printer.h b/compiler/optimizing/pretty_printer.h
deleted file mode 100644
index 62a5a2c..0000000
--- a/compiler/optimizing/pretty_printer.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- */
-
-#ifndef ART_COMPILER_OPTIMIZING_PRETTY_PRINTER_H_
-#define ART_COMPILER_OPTIMIZING_PRETTY_PRINTER_H_
-
-#include "nodes.h"
-
-namespace art {
-
-class HPrettyPrinter : public HGraphVisitor {
- public:
-  explicit HPrettyPrinter(HGraph* graph) : HGraphVisitor(graph) { }
-
-  virtual void VisitInstruction(HInstruction* instruction) {
-    PrintString("  ");
-    PrintString(instruction->DebugName());
-    PrintNewLine();
-  }
-
-  virtual void VisitBasicBlock(HBasicBlock* block) {
-    PrintString("BasicBlock ");
-    PrintInt(block->block_id());
-    PrintNewLine();
-    HGraphVisitor::VisitBasicBlock(block);
-  }
-
-  virtual void PrintNewLine() = 0;
-  virtual void PrintInt(int value) = 0;
-  virtual void PrintString(const char* value) = 0;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HPrettyPrinter);
-};
-
-}  // namespace art
-
-#endif  // ART_COMPILER_OPTIMIZING_PRETTY_PRINTER_H_
diff --git a/compiler/optimizing/pretty_printer_test.cc b/compiler/optimizing/pretty_printer_test.cc
deleted file mode 100644
index 81a0d91..0000000
--- a/compiler/optimizing/pretty_printer_test.cc
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (C) 2014 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 "base/stringprintf.h"
-#include "builder.h"
-#include "dex_instruction.h"
-#include "nodes.h"
-#include "pretty_printer.h"
-#include "utils/arena_allocator.h"
-
-#include "gtest/gtest.h"
-
-namespace art {
-
-const uint16_t data[] = { Instruction::RETURN_VOID };
-
-const char* expected =
-    "BasicBlock 0\n"
-    "  Goto\n"
-    "BasicBlock 1\n"
-    "  ReturnVoid\n"
-    "BasicBlock 2\n"
-    "  Exit\n";
-
-class StringPrettyPrinter : public HPrettyPrinter {
- public:
-  explicit StringPrettyPrinter(HGraph* graph) : HPrettyPrinter(graph), str_("") { }
-
-  virtual void PrintInt(int value) {
-    str_ += StringPrintf("%d", value);
-  }
-
-  virtual void PrintString(const char* value) {
-    str_ += value;
-  }
-
-  virtual void PrintNewLine() {
-    str_ += '\n';
-  }
-
-  void Clear() { str_.clear(); }
-
-  std::string str() const { return str_; }
-
- private:
-  std::string str_;
-  DISALLOW_COPY_AND_ASSIGN(StringPrettyPrinter);
-};
-
-TEST(OptimizerTest, ReturnVoid) {
-  ArenaPool pool;
-  ArenaAllocator allocator(&pool);
-  HGraphBuilder builder(&allocator);
-  HGraph* graph = builder.BuildGraph(data, data + 1);
-  ASSERT_NE(graph, nullptr);
-  StringPrettyPrinter printer(graph);
-  printer.VisitInsertionOrder();
-  ASSERT_STREQ(expected, printer.str().c_str());
-
-  const GrowableArray<HBasicBlock*>* blocks = graph->blocks();
-  ASSERT_EQ(blocks->Get(0)->predecessors()->Size(), (size_t)0);
-  ASSERT_EQ(blocks->Get(1)->predecessors()->Size(), (size_t)1);
-  ASSERT_EQ(blocks->Get(1)->predecessors()->Get(0), blocks->Get(0));
-  ASSERT_EQ(blocks->Get(2)->predecessors()->Size(), (size_t)1);
-  ASSERT_EQ(blocks->Get(2)->predecessors()->Get(0), blocks->Get(1));
-
-  ASSERT_EQ(blocks->Get(0)->successors()->Size(), (size_t)1);
-  ASSERT_EQ(blocks->Get(1)->successors()->Get(0), blocks->Get(2));
-  ASSERT_EQ(blocks->Get(1)->successors()->Size(), (size_t)1);
-  ASSERT_EQ(blocks->Get(1)->successors()->Get(0), blocks->Get(2));
-  ASSERT_EQ(blocks->Get(2)->successors()->Size(), (size_t)0);
-}
-
-}  // namespace art
diff --git a/compiler/utils/allocation.h b/compiler/utils/allocation.h
deleted file mode 100644
index f708b20..0000000
--- a/compiler/utils/allocation.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- */
-
-#ifndef ART_COMPILER_UTILS_ALLOCATION_H_
-#define ART_COMPILER_UTILS_ALLOCATION_H_
-
-#include "arena_allocator.h"
-#include "base/logging.h"
-
-namespace art {
-
-class ArenaObject {
- public:
-  // Allocate a new ArenaObject of 'size' bytes in the Arena.
-  void* operator new(size_t size, ArenaAllocator* allocator) {
-    return allocator->Alloc(size, ArenaAllocator::kAllocMisc);
-  }
-
-  void operator delete(void*, size_t) {
-    LOG(FATAL) << "UNREACHABLE";
-  }
-};
-
-class ValueObject {
- public:
-  void* operator new(size_t size) {
-    LOG(FATAL) << "UNREACHABLE";
-    abort();
-  }
-  void operator delete(void*, size_t) {
-    LOG(FATAL) << "UNREACHABLE";
-  }
-};
-
-}  // namespace art
-
-#endif  // ART_COMPILER_OPTIMIZING_ALLOCATION_H_