ARM64: Use default-NaN mode to canonicalize NaNs.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include "allocation.h"
 #include "assert-scope.h"
 #include "builtins.h"
@@ skipping 1272 matching lines @@
     "Unexpected initial map for Array function (2)")                          \
   V(kUnexpectedInitialMapForArrayFunction,                                    \
     "Unexpected initial map for Array function")                              \
   V(kUnexpectedInitialMapForInternalArrayFunction,                            \
     "Unexpected initial map for InternalArray function")                      \
   V(kUnexpectedLevelAfterReturnFromApiCall,                                   \
     "Unexpected level after return from api call")                            \
   V(kUnexpectedNegativeValue, "Unexpected negative value")                    \
   V(kUnexpectedNumberOfPreAllocatedPropertyFields,                            \
     "Unexpected number of pre-allocated property fields")                     \
+  V(kUnexpectedFPCRMode, "Unexpected FPCR mode.")                             \
   V(kUnexpectedSmi, "Unexpected smi value")                                   \
   V(kUnexpectedStringFunction, "Unexpected String function")                  \
   V(kUnexpectedStringType, "Unexpected string type")                          \
   V(kUnexpectedStringWrapperInstanceSize,                                     \
     "Unexpected string wrapper instance size")                                \
   V(kUnexpectedTypeForRegExpDataFixedArrayExpected,                           \
     "Unexpected type for RegExp data, FixedArray expected")                   \
   V(kUnexpectedValue, "Unexpected value")                                     \
   V(kUnexpectedUnusedPropertiesOfStringWrapper,                               \
     "Unexpected unused properties of string wrapper")                         \
@@ skipping 9793 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_