Remove uses of RangeCanInclude() in flooring division by power of 2.

src/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 604 matching lines @@
     // implement DataEquals(), which will be used to determine if other
     // occurrences of the instruction are indeed the same.
     kUseGVN,
     // Track instructions that are dominating side effects. If an instruction
     // sets this flag, it must implement HandleSideEffectDominator() and should
     // indicate which side effects to track by setting GVN flags.
     kTrackSideEffectDominators,
     kCanOverflow,
     kBailoutOnMinusZero,
     kCanBeDivByZero,
+    kLeftCanBeMinInt,
     kAllowUndefinedAsNaN,
     kIsArguments,
     kTruncatingToInt32,
     kAllUsesTruncatingToInt32,
     kTruncatingToSmi,
     kAllUsesTruncatingToSmi,
     // Set after an instruction is killed.
     kIsDead,
     // Instructions that are allowed to produce full range unsigned integer
     // values are marked with kUint32 flag. If arithmetic shift or a load from
@@ skipping 213 matching lines @@
   GVNFlagSet ObservableChangesFlags() const {
     GVNFlagSet result = ChangesFlags();
     result.Intersect(AllObservableSideEffectsFlagSet());
     return result;
   }
 
   Range* range() const { return range_; }
   // TODO(svenpanne) We should really use the null object pattern here.
   bool HasRange() const { return range_ != NULL; }
   bool CanBeNegative() const { return !HasRange() || range()->CanBeNegative(); }
-  bool RangeCanInclude(int value) const {
-    return !HasRange() || range()->Includes(value);
-  }
   void AddNewRange(Range* r, Zone* zone);
   void RemoveLastAddedRange();
   void ComputeInitialRange(Zone* zone);
 
   // Escape analysis helpers.
   virtual bool HasEscapingOperandAt(int index) { return true; }
   virtual bool HasOutOfBoundsAccess(int size) { return false; }
 
   // Representation helpers.
   virtual Representation observed_input_representation(int index) {
@@ skipping 2887 matching lines @@
   }
 
   bool RightIsPowerOf2() {
     if (!right()->IsInteger32Constant()) return false;
     int32_t value = right()->GetInteger32Constant();
     return value != 0 && (IsPowerOf2(value) || IsPowerOf2(-value));
   }
 
   DECLARE_ABSTRACT_INSTRUCTION(BinaryOperation)
 
- protected:
-  Range* InferRangeForDiv(Zone* zone);
-
  private:
   bool IgnoreObservedOutputRepresentation(Representation current_rep);
 
   Representation observed_input_representation_[2];
   Representation observed_output_representation_;
 };
 
 
 class HWrapReceiver V8_FINAL : public HTemplateInstruction<2> {
  public:
@@ skipping 321 matching lines @@
  protected:
   virtual bool DataEquals(HValue* other) V8_OVERRIDE { return true; }
 
  private:
   HMathFloorOfDiv(HValue* context, HValue* left, HValue* right)
       : HBinaryOperation(context, left, right) {
     set_representation(Representation::Integer32());
     SetFlag(kUseGVN);
     SetFlag(kCanOverflow);
     SetFlag(kCanBeDivByZero);
+    SetFlag(kLeftCanBeMinInt);
     SetFlag(kAllowUndefinedAsNaN);
   }
 
   virtual Range* InferRange(Zone* zone) V8_OVERRIDE;
 
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 };
 
 
 class HArithmeticBinaryOperation : public HBinaryOperation {
@@ skipping 3386 matching lines @@
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_