Split side-effect flags from flags in Hydrogen instructions.

src/hydrogen.h

-// Copyright 2011 the V8 project authors. All rights reserved.
+// 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
 //       with the distribution.
@@ skipping 1037 matching lines @@
         lists_size_(0),
         count_(0),
         present_flags_(0),
         array_(NULL),
         lists_(NULL),
         free_list_head_(kNil) {
     ResizeLists(kInitialSize);
     Resize(kInitialSize);
   }
 
-  void Kill(int flags);
+  void Kill(GVNFlagSet flags);
 
   void Add(HValue* value) {
-    present_flags_ |= value->flags();
+    present_flags_.Add(value->gvn_flags());
     Insert(value);
   }
 
   HValue* Lookup(HValue* value) const;
 
   HValueMap* Copy(Zone* zone) const {
     return new(zone) HValueMap(zone, this);
   }
 
   bool IsEmpty() const { return count_ == 0; }
@@ skipping 12 matching lines @@
   HValueMap(Zone* zone, const HValueMap* other);
 
   void Resize(int new_size);
   void ResizeLists(int new_size);
   void Insert(HValue* value);
   uint32_t Bound(uint32_t value) const { return value & (array_size_ - 1); }
 
   int array_size_;
   int lists_size_;
   int count_;  // The number of values stored in the HValueMap.
-  int present_flags_;  // All flags that are in any value in the HValueMap.
+  GVNFlagSet present_flags_;  // All flags that are in any value in the
+                              // HValueMap.
   HValueMapListElement* array_;  // Primary store - contains the first value
   // with a given hash.  Colliding elements are stored in linked lists.
   HValueMapListElement* lists_;  // The linked lists containing hash collisions.
   int free_list_head_;  // Unused elements in lists_ are on the free list.
 };
 
 
 class HStatistics: public Malloced {
  public:
   void Initialize(CompilationInfo* info);
@@ skipping 145 matching lines @@
   const char* filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_