[Bug tree-optimization/95401] [10 Regression] GCC produces incorrect instruction with -O3 for AVX2 since r10-2257-g868363d4f52df19d

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95401

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Alexandre Oliva from comment #7)
> How important is it that the test added for this PR be split into two
> separate source files?
> 
> I ask because, on targets that support vectors, but the vector unit is not
> enabled in the default configuration, vect.exp makes compile the default
> action, instead of run, and with additional sources, compile fails because
> one can't compile multiple sources into a single asm output.

Hmm, but that sounds like a mistake in the dg setup?  Anyway, if you can make
the testcase fail when combined (and some noipa attributes sprinkled around)
it's certainly fine to merge it into a single TU.