READ_DOUBLE_FIELD 1197 src/objects-inl.h   return READ_DOUBLE_FIELD(this, kValueOffset);
READ_DOUBLE_FIELD 1730 src/objects-inl.h   double result = READ_DOUBLE_FIELD(this, kHeaderSize + index * kDoubleSize);
READ_DOUBLE_FIELD 1770 src/objects-inl.h   return is_the_hole_nan(READ_DOUBLE_FIELD(this, offset));