overhead with creating multi_array_ref with GCC 3.4.6

[Maxim Yanchenko <Maxim.Yanchenko@…>]

We spotted this with profiler and had to switch from boost::const_multi_array_ref to just std:pair of pointers.

GCC 3.4.6 generates huge code for this primitive function (to represent a raw pointer as a 1D-array), comparing to GCC 4.4.4:

boost::const_multi_array_ref<int,1>
make(const int* begin, const boost::array<int,1>& size)
{
  return boost::const_multi_array_ref<int,1>(begin, size);
}

The generated code and compilation options are attached.

[Maxim Yanchenko <Maxim.Yanchenko@…>]

gcc 3.4.6

[Maxim Yanchenko <Maxim.Yanchenko@…>]

gcc 4.4.4