ARM64: Optimize AllocateHeapNumber to use STP.

src/objects.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 1274 matching lines @@
   V(kOffsetOutOfRange, "Offset out of range")                                 \
   V(kOperandIsASmiAndNotAName, "Operand is a smi and not a name")             \
   V(kOperandIsASmiAndNotAString, "Operand is a smi and not a string")         \
   V(kOperandIsASmi, "Operand is a smi")                                       \
   V(kOperandIsNotAName, "Operand is not a name")                              \
   V(kOperandIsNotANumber, "Operand is not a number")                          \
   V(kOperandIsNotASmi, "Operand is not a smi")                                \
   V(kOperandIsNotAString, "Operand is not a string")                          \
   V(kOperandIsNotSmi, "Operand is not smi")                                   \
   V(kOperandNotANumber, "Operand not a number")                               \
+  V(kObjectTagged, "The object is tagged")                                    \
+  V(kObjectNotTagged, "The object is not tagged")                             \
   V(kOptimizationDisabled, "Optimization is disabled")                        \
   V(kOptimizedTooManyTimes, "Optimized too many times")                       \
   V(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister,                  \
     "Out of virtual registers while trying to allocate temp register")        \
   V(kParseScopeError, "Parse/scope error")                                    \
   V(kPossibleDirectCallToEval, "Possible direct call to eval")                \
   V(kPreconditionsWereNotMet, "Preconditions were not met")                   \
   V(kPropertyAllocationCountFailed, "Property allocation count failed")       \
   V(kReceivedInvalidReturnAddress, "Received invalid return address")         \
   V(kReferenceToAVariableWhichRequiresDynamicLookup,                          \
@@ skipping 9520 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_