Removed 31-bit smis.

src/objects-inl.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 817 matching lines @@
   return reinterpret_cast<Failure*>(
       (static_cast<intptr_t>(info) << kFailureTagSize) | kFailureTag);
 }
 
 
 bool Smi::IsValid(intptr_t value) {
 #ifdef DEBUG
   bool in_range = (value >= kMinValue) && (value <= kMaxValue);
 #endif
 
-#ifdef V8_LONG_SMI
+#ifdef V8_TARGET_ARCH_X64
   // To be representable as a long smi, the value must be a 32-bit integer.
   bool result = (value == static_cast<int32_t>(value));
 #else
   // To be representable as an tagged small integer, the two
   // most-significant bits of 'value' must be either 00 or 11 due to
   // sign-extension. To check this we add 01 to the two
   // most-significant bits, and check if the most-significant bit is 0
   //
   // CAUTION: The original code below:
   // bool result = ((value + 0x40000000) & 0x80000000) == 0;
@@ skipping 2038 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_