How to define multiple processor families?

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hi ,



May I ask a question ?

Any help are appreciated.



If we set -march/tune to define processor, we can obtain some extra
performance improvement.



I want to run my application on different intel processor family, for
example: broadwell, skylake, haswell, skylake-avx512.



What should I set? Does It like the following ?



-march=broadwell   -mtune=intel -mmmx -msse -msse -msse2 -msse3 -mavx
-mavx2 -mavx=512f -mavx512pf ...





BTW: current gcc version is 7.3 on centos 7.2





Thanks

Longda



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