https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86619
--- Comment #2 from Michael Veksler <mickey.veksler at gmail dot com> --- >> type-based alias analysis doesn't distinguish between int[2] and int[3]. Is it just the way GCC implements type-based alias analysis, or is it defined that way in the C and C++ standards? I suspect that the weaker alias analysis of arrays (int [size] and std::array<int, size>) is one of the things that make C++ slower than Fortran on some benchmarks.
