[Bug target/84172] option "-O3" create slower code

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84172

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-suse-linux
          Component|c                           |target

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you provide the output of the following command:
gcc-5 -march=native -mtune=native -g -static -O3 -o test.3 main.c -v

We need to know what -march=native expands to.