Remove uses of CanBeNegative() in HMod.

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 605 matching lines @@
     // 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,
+    kLeftCanBeNegative,
     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 212 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(); }
   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 3984 matching lines @@
   virtual bool DataEquals(HValue* other) V8_OVERRIDE { return true; }
 
   virtual Range* InferRange(Zone* zone) V8_OVERRIDE;
 
  private:
   HMod(HValue* context,
        HValue* left,
        HValue* right) : HArithmeticBinaryOperation(context, left, right) {
     SetFlag(kCanBeDivByZero);
     SetFlag(kCanOverflow);
+    SetFlag(kLeftCanBeNegative);
   }
 };
 
 
 class HDiv V8_FINAL : public HArithmeticBinaryOperation {
  public:
   static HInstruction* New(Zone* zone,
                            HValue* context,
                            HValue* left,
                            HValue* right);
@@ skipping 2631 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_