Simplify double to number convertion.

src/heap.h

 // Copyright 2006-2008 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 509 matching lines @@
       JSObject::kHeaderSize + 2 * kPointerSize;
   static const int arguments_callee_index = 0;
   static const int arguments_length_index = 1;
 
   // Allocates an arguments object - optionally with an elements array.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateArgumentsObject(Object* callee, int length);
 
-  // Converts a double into either a Smi or a HeapNumber object.
-  // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
-  // failed.
-  // Please note this does not perform a garbage collection.
-  static Object* NewNumberFromDouble(double value,
-                                     PretenureFlag pretenure = NOT_TENURED);
-
   // Same as NewNumberFromDouble, but may return a preallocated/immutable
   // number object (e.g., minus_zero_value_, nan_value_)
   static Object* NumberFromDouble(double value,
                                   PretenureFlag pretenure = NOT_TENURED);
 
   // Allocated a HeapNumber from value.
   static Object* AllocateHeapNumber(double value, PretenureFlag pretenure);
   static Object* AllocateHeapNumber(double value);  // pretenure = NOT_TENURED
 
   // Converts an int into either a Smi or a HeapNumber object.
@@ skipping 577 matching lines @@
   static GCCallback global_gc_epilogue_callback_;
 
   // Checks whether a global GC is necessary
   static GarbageCollector SelectGarbageCollector(AllocationSpace space);
 
   // Performs garbage collection
   static void PerformGarbageCollection(AllocationSpace space,
                                        GarbageCollector collector,
                                        GCTracer* tracer);
 
-  // Returns either a Smi or a Number object from 'value'. If 'new_object'
-  // is false, it may return a preallocated immutable object.
-  static Object* SmiOrNumberFromDouble(double value,
-                                       bool new_object,
-                                       PretenureFlag pretenure = NOT_TENURED);
-
   // Allocate an uninitialized object in map space.  The behavior is identical
   // to Heap::AllocateRaw(size_in_bytes, MAP_SPACE), except that (a) it doesn't
   // have to test the allocation space argument and (b) can reduce code size
   // (since both AllocateRaw and AllocateRawMap are inlined).
   static inline Object* AllocateRawMap();
 
   // Allocate an uninitialized object in the global property cell space.
   static inline Object* AllocateRawCell();
 
   // Initializes a JSObject based on its map.
@@ skipping 681 matching lines @@
 
   // To speed up scavenge collections new space string are kept
   // separate from old space strings.
   static List<Object*> new_space_strings_;
   static List<Object*> old_space_strings_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_