diff --git a/compiler/optimizing/induction_var_range.h b/compiler/optimizing/induction_var_range.h
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+/*
+ * Copyright (C) 2015 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_INDUCTION_VAR_RANGE_H_
+#define ART_COMPILER_OPTIMIZING_INDUCTION_VAR_RANGE_H_
+
+#include "induction_var_analysis.h"
+
+namespace art {
+
+/**
+ * This class implements induction variable based range analysis on expressions within loops.
+ * It takes the results of induction variable analysis in the constructor and provides a public
+ * API to obtain a conservative lower and upper bound value on each instruction in the HIR.
+ *
+ * For example, given a linear induction 2 * i + x where 0 <= i <= 10, range analysis yields lower
+ * bound value x and upper bound value x + 20 for the expression, thus, the range [0, x + 20].
+ */
+class InductionVarRange {
+ public:
+  /*
+   * A value that can be represented as "a * instruction + b" for 32-bit constants, where
+   * Value(INT_MIN) and Value(INT_MAX) denote an unknown lower and upper bound, respectively.
+   * Although range analysis could yield more complex values, the format is sufficiently powerful
+   * to represent useful cases and feeds directly into optimizations like bounds check elimination.
+   */
+  struct Value {
+    Value(HInstruction* i, int32_t a, int32_t b)
+        : instruction(a ? i : nullptr),
+          a_constant(a),
+          b_constant(b) {}
+    explicit Value(int32_t b) : Value(nullptr, 0, b) {}
+    HInstruction* instruction;
+    int32_t a_constant;
+    int32_t b_constant;
+  };
+
+  explicit InductionVarRange(HInductionVarAnalysis* induction);
+
+  /**
+   * Given a context denoted by the first instruction, returns a,
+   * possibly conservative, lower bound on the instruction's value.
+   */
+  Value GetMinInduction(HInstruction* context, HInstruction* instruction);
+
+  /**
+   * Given a context denoted by the first instruction, returns a,
+   * possibly conservative, upper bound on the instruction's value.
+   */
+  Value GetMaxInduction(HInstruction* context, HInstruction* instruction);
+
+ private:
+  //
+  // Private helper methods.
+  //
+
+  HInductionVarAnalysis::InductionInfo* GetTripCount(HLoopInformation* loop,
+                                                     HInstruction* context);
+
+  static Value GetFetch(HInstruction* instruction, int32_t fail_value);
+
+  static Value GetMin(HInductionVarAnalysis::InductionInfo* info,
+                      HInductionVarAnalysis::InductionInfo* trip);
+  static Value GetMax(HInductionVarAnalysis::InductionInfo* info,
+                      HInductionVarAnalysis::InductionInfo* trip);
+  static Value GetMul(HInductionVarAnalysis::InductionInfo* info1,
+                      HInductionVarAnalysis::InductionInfo* info2,
+                      HInductionVarAnalysis::InductionInfo* trip, int32_t fail_value);
+  static Value GetDiv(HInductionVarAnalysis::InductionInfo* info1,
+                      HInductionVarAnalysis::InductionInfo* info2,
+                      HInductionVarAnalysis::InductionInfo* trip, int32_t fail_value);
+
+  static Value AddValue(Value v1, Value v2, int32_t fail_value);
+  static Value SubValue(Value v1, Value v2, int32_t fail_value);
+  static Value MulValue(Value v1, Value v2, int32_t fail_value);
+  static Value DivValue(Value v1, Value v2, int32_t fail_value);
+  static Value MinValue(Value v1, Value v2);
+  static Value MaxValue(Value v1, Value v2);
+
+  /** Results of prior induction variable analysis. */
+  HInductionVarAnalysis *induction_analysis_;
+
+  friend class InductionVarRangeTest;
+
+  DISALLOW_COPY_AND_ASSIGN(InductionVarRange);
+};
+
+}  // namespace art
+
+#endif  // ART_COMPILER_OPTIMIZING_INDUCTION_VAR_RANGE_H_