diff --git a/runtime/quick/inline_method_analyser.h b/runtime/quick/inline_method_analyser.h
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+/*
+ * 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_RUNTIME_QUICK_INLINE_METHOD_ANALYSER_H_
+#define ART_RUNTIME_QUICK_INLINE_METHOD_ANALYSER_H_
+
+#include "base/macros.h"
+#include "base/mutex.h"
+#include "dex_file.h"
+#include "dex_instruction.h"
+
+/*
+ * NOTE: This code is part of the quick compiler. It lives in the runtime
+ * only to allow the debugger to check whether a method has been inlined.
+ */
+
+namespace art {
+
+namespace verifier {
+class MethodVerifier;
+}  // namespace verifier
+
+enum InlineMethodOpcode : uint16_t {
+  kIntrinsicDoubleCvt,
+  kIntrinsicFloatCvt,
+  kIntrinsicReverseBytes,
+  kIntrinsicAbsInt,
+  kIntrinsicAbsLong,
+  kIntrinsicAbsFloat,
+  kIntrinsicAbsDouble,
+  kIntrinsicMinMaxInt,
+  kIntrinsicSqrt,
+  kIntrinsicCharAt,
+  kIntrinsicCompareTo,
+  kIntrinsicIsEmptyOrLength,
+  kIntrinsicIndexOf,
+  kIntrinsicCurrentThread,
+  kIntrinsicPeek,
+  kIntrinsicPoke,
+  kIntrinsicCas,
+  kIntrinsicUnsafeGet,
+  kIntrinsicUnsafePut,
+
+  kInlineOpNop,
+  kInlineOpReturnArg,
+  kInlineOpNonWideConst,
+  kInlineOpIGet,
+  kInlineOpIPut,
+};
+std::ostream& operator<<(std::ostream& os, const InlineMethodOpcode& rhs);
+
+enum InlineMethodFlags : uint16_t {
+  kNoInlineMethodFlags = 0x0000,
+  kInlineIntrinsic     = 0x0001,
+  kInlineSpecial       = 0x0002,
+};
+
+// IntrinsicFlags are stored in InlineMethod::d::raw_data
+enum IntrinsicFlags {
+  kIntrinsicFlagNone = 0,
+
+  // kIntrinsicMinMaxInt
+  kIntrinsicFlagMax = kIntrinsicFlagNone,
+  kIntrinsicFlagMin = 1,
+
+  // kIntrinsicIsEmptyOrLength
+  kIntrinsicFlagLength  = kIntrinsicFlagNone,
+  kIntrinsicFlagIsEmpty = kIntrinsicFlagMin,
+
+  // kIntrinsicIndexOf
+  kIntrinsicFlagBase0 = kIntrinsicFlagMin,
+
+  // kIntrinsicUnsafeGet, kIntrinsicUnsafePut, kIntrinsicUnsafeCas
+  kIntrinsicFlagIsLong     = kIntrinsicFlagMin,
+  // kIntrinsicUnsafeGet, kIntrinsicUnsafePut
+  kIntrinsicFlagIsVolatile = 2,
+  // kIntrinsicUnsafePut, kIntrinsicUnsafeCas
+  kIntrinsicFlagIsObject   = 4,
+  // kIntrinsicUnsafePut
+  kIntrinsicFlagIsOrdered  = 8,
+};
+
+struct InlineIGetIPutData {
+  // The op_variant below is opcode-Instruction::IGET for IGETs and
+  // opcode-Instruction::IPUT for IPUTs. This is because the runtime
+  // doesn't know the OpSize enumeration.
+  uint16_t op_variant : 3;
+  uint16_t object_arg : 4;
+  uint16_t src_arg : 4;  // iput only
+  uint16_t method_is_static : 1;
+  uint16_t reserved : 4;
+  uint16_t field_idx;
+  uint32_t is_volatile : 1;
+  uint32_t field_offset : 31;
+};
+COMPILE_ASSERT(sizeof(InlineIGetIPutData) == sizeof(uint64_t), InvalidSizeOfInlineIGetIPutData);
+
+struct InlineReturnArgData {
+  uint16_t arg;
+  uint16_t is_wide : 1;
+  uint16_t is_object : 1;
+  uint16_t reserved : 14;
+  uint32_t reserved2;
+};
+COMPILE_ASSERT(sizeof(InlineReturnArgData) == sizeof(uint64_t), InvalidSizeOfInlineReturnArgData);
+
+struct InlineMethod {
+  InlineMethodOpcode opcode;
+  InlineMethodFlags flags;
+  union {
+    uint64_t data;
+    InlineIGetIPutData ifield_data;
+    InlineReturnArgData return_data;
+  } d;
+};
+
+class InlineMethodAnalyser {
+ public:
+  /**
+   * Analyse method code to determine if the method is a candidate for inlining.
+   * If it is, record the inlining data.
+   *
+   * @param verifier the method verifier holding data about the method to analyse.
+   * @param method placeholder for the inline method data.
+   * @return true if the method is a candidate for inlining, false otherwise.
+   */
+  static bool AnalyseMethodCode(verifier::MethodVerifier* verifier, InlineMethod* method)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  static constexpr bool IsInstructionIGet(Instruction::Code opcode) {
+    return Instruction::IGET <= opcode && opcode <= Instruction::IGET_SHORT;
+  }
+
+  static constexpr bool IsInstructionIPut(Instruction::Code opcode) {
+    return Instruction::IPUT <= opcode && opcode <= Instruction::IPUT_SHORT;
+  }
+
+  static constexpr uint16_t IGetVariant(Instruction::Code opcode) {
+    return opcode - Instruction::IGET;
+  }
+
+  static constexpr uint16_t IPutVariant(Instruction::Code opcode) {
+    return opcode - Instruction::IPUT;
+  }
+
+ private:
+  static bool AnalyseReturnMethod(const DexFile::CodeItem* code_item, InlineMethod* result);
+  static bool AnalyseConstMethod(const DexFile::CodeItem* code_item, InlineMethod* result);
+  static bool AnalyseIGetMethod(verifier::MethodVerifier* verifier, InlineMethod* result)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  static bool AnalyseIPutMethod(verifier::MethodVerifier* verifier, InlineMethod* result)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Can we fast path instance field access in a verified accessor?
+  // If yes, computes field's offset and volatility and whether the method is static or not.
+  static bool ComputeSpecialAccessorInfo(uint32_t field_idx, bool is_put,
+                                         verifier::MethodVerifier* verifier,
+                                         InlineIGetIPutData* result)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+};
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_QUICK_INLINE_METHOD_ANALYSER_H_