Turn UInt32 analysis into a proper HPhase.

src/hydrogen.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 278 matching lines @@
   HBasicBlock* entry_block() const { return entry_block_; }
   HEnvironment* start_environment() const { return start_environment_; }
 
   void FinalizeUniqueValueIds();
   void InitializeInferredTypes();
   void InsertTypeConversions();
   void MergeRemovableSimulates();
   void InsertRepresentationChanges();
   void MarkDeoptimizeOnUndefined();
   void ComputeMinusZeroChecks();
-  void ComputeSafeUint32Operations();
   bool ProcessArgumentsObject();
   void EliminateRedundantPhis();
   void Canonicalize();
   void OrderBlocks();
   void AssignDominators();
   void SetupInformativeDefinitions();
   void EliminateRedundantBoundsChecks();
   void DehoistSimpleArrayIndexComputations();
   void RestoreActualValues();
   void DeadCodeElimination(const char *phase_name);
@@ skipping 112 matching lines @@
         DependentCode::kElementsCantBeAddedGroup, info());
     isolate()->initial_array_prototype()->map()->AddDependentCompilationInfo(
         DependentCode::kElementsCantBeAddedGroup, info());
     depends_on_empty_array_proto_elements_ = true;
   }
 
   bool depends_on_empty_array_proto_elements() {
     return depends_on_empty_array_proto_elements_;
   }
 
+  bool has_uint32_instructions() {
+    ASSERT(uint32_instructions_ == NULL || !uint32_instructions_->is_empty());
+    return uint32_instructions_ != NULL;
+  }
+
+  ZoneList<HInstruction*>* uint32_instructions() {
+    ASSERT(uint32_instructions_ == NULL || !uint32_instructions_->is_empty());
+    return uint32_instructions_;
+  }
+
   void RecordUint32Instruction(HInstruction* instr) {
+    ASSERT(uint32_instructions_ == NULL || !uint32_instructions_->is_empty());
     if (uint32_instructions_ == NULL) {
       uint32_instructions_ = new(zone()) ZoneList<HInstruction*>(4, zone());
     }
     uint32_instructions_->Add(instr, zone());
   }
 
  private:
   HConstant* GetConstant(SetOncePointer<HConstant>* pointer,
                          int32_t integer_value);
 
@@ skipping 1652 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_