Fix bug in propagation of type information into registers....

src/ia32/register-allocator-ia32.cc

 // Copyright 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 104 matching lines @@
         }
       } else {
         if (CodeGeneratorScope::Current()->IsUnsafeSmi(handle())) {
           CodeGeneratorScope::Current()->MoveUnsafeSmi(fresh.reg(), handle());
         } else {
           CodeGeneratorScope::Current()->masm()->Set(fresh.reg(),
                                                      Immediate(handle()));
         }
       }
     }
+    fresh.set_number_info(number_info());
     fresh.set_untagged_int32(is_untagged_int32());
     *this = fresh;
   } else if (is_register() && reg().is(target)) {
     ASSERT(CodeGeneratorScope::Current()->has_valid_frame());
     CodeGeneratorScope::Current()->frame()->Spill(target);
     ASSERT(CodeGeneratorScope::Current()->allocator()->count(target) == 1);
   }
   ASSERT(is_register());
   ASSERT(reg().is(target));
 }
 
 
 // -------------------------------------------------------------------------
 // RegisterAllocator implementation.
 
 Result RegisterAllocator::AllocateByteRegisterWithoutSpilling() {
   Result result = AllocateWithoutSpilling();
   // Check that the register is a byte register.  If not, unuse the
   // register if valid and return an invalid result.
   if (result.is_valid() && !result.reg().is_byte_register()) {
     result.Unuse();
     return Result();
   }
   return result;
 }
 
 
 } }  // namespace v8::internal