[Bug fortran/78611] -march=native makes code 3x slower

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78611

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #6)
> Which glibc was used?  You may run into:
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=20495

Please run your testcase with

# LD_BIND_NOW=1 ./test

with and without -mavx.