Hi! On Thu, May 20, 2021 at 09:38:49PM -0400, Michael Meissner wrote: > Basically for code generation tests, I see the following cases: > > 1) Test code targetting precisley power8 (or power9, power10), etc. Hopefully > these are rare.
-mdejagnu-cpu= works perfectly for this. You may need a *_ok or a *_hw as well (and/or other selectors). > 2) Test code targetting at least power8. But as these tests show, that a lot > of the code won't generate the appropriate instructions on power10. This is > what we have now. It relies on undocumented switches like -mpower9-vector to > add the necessary support. You should simply not run this test on too new systems. You can use dg-skip-if or similar. > 3) Test code targetting at least power8 but go to power9 at the maximum. But why? We will keep testing all interesting CPU / OS combos as long as they are interesting. Segher
