[Bug libfortran/78379] Processor-specific versions for matmul

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78379

--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Next question - what happens if you add

-mvzeroupper -mavx

to the line in the Makefile?  Does that make a difference in speed?