> Turning it into a compile test that counts the number of jumps threaded > seems potentially flaky but I'm not against it. And I'm not sure how to > reliably turn it into an execution test. Would the directives > > /* { dg-do run } */ > /* { dg-require-effective-target avx2 } */ > /* { dg-require-effective-target ia32 } */ > /* { dg-options "-O3 -mavx2" } */ > > work?
No, this only checks that the target is able to compile the testcase. In gcc.target/i386, there is ialready present nfrastructure that handles runtime checks (avx2_test) in your case. You can see many examples there. Uros.