[Bug tree-optimization/82450] loop flattening should be done

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82450

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://github.com/llvm/llv
                   |                            |m-project/issues/39927
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot 
gnu.org
             Status|NEW                         |ASSIGNED

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So LLVM got a loop flattening pass in October 2020. I think I am going to try
to get a version into GCC for 15 then.

It improves coremarks:
https://github.com/eembc/coremark/blob/main/core_matrix.c#L242