On Thu, Aug 25, 2022 at 10:42 PM HAO CHEN GUI <guih...@linux.ibm.com> wrote:
>
> Hi David,
>
> On 25/8/2022 下午 10:01, David Edelsohn wrote:
> > On Thu, Aug 25, 2022 at 1:22 AM Kewen.Lin <li...@linux.ibm.com> wrote:
> >>
> >> on 2022/8/25 11:37, HAO CHEN GUI wrote:
> >>> Hi,
> >>>
> >>> On 24/8/2022 下午 1:24, Kewen.Lin wrote:
> >>>> Could you try to test with dg-options "-mdejagnu-cpu=power9 -mpowerpc64"
> >>>> all the time, but still
> >>>> having that has_arch_ppc64 effective target on aix?
> >>>>
> >>>> I'd expect has_arch_ppc64 check to fail on aix 32bit, the error will not
> >>>> be a problem (turning
> >>>> into an UNSUPPORTED then)?
> >>>
> >>> I tested it on AIX. "has_arch_ppc64" fails with dg-options
> >>> "-mdejagnu-cpu=power9 -mpowerpc64" on
> >>> 32-bit AIX environment. It works as we expected.
> >>
> >> Nice, thanks for your time on testing.
> >>
> >>>
> >>> Also I found that AIX and Darwin are skipped for bfp test. So in
> >>> testcase, it's no need to care
> >>> about them. Not sure if it's intention.
> >>>
> >>> In bfp.exp
> >>>
> >>> # Exit immediately if this isn't a PowerPC target or if the target is
> >>> # aix or Darwin.
> >>> if { (![istarget powerpc*-*-*] && ![istarget rs6000-*-*])
> >>> || [istarget "powerpc*-*-aix*"]
> >>> || [istarget "powerpc*-*-darwin*"] } then {
> >>> return
> >>> }
> >>
> >> I can't find a hint about why we wanted to disable bfp testing on aix, it
> >> looks like a overkill to me.
> >>
> >> Could you help to further test if all test cases in this small bucket
> >> available on aix?
> >>
> >> Maybe it can give us some evidences on why it's intentional or not.
> >>
> >> Hi David & Segher,
> >>
> >> Do you have some insights on this?
> >
> > AIX (and Darwin) are not Linux and not ELF. There is no support for
> > BPF. All of the tests fail, so they are skipped.
>
> Thanks so much for your info.
>
> Here are test results on P7 AIX7.1. I tested all scalar-extract-sig-* and
> scalar-insert-exp-* cases in
> "testsuite/powerpc/bfp" fold. All compiling cases pass except those use
> __ieee128. The runnable cases
> fail as expected. p9vector is not supported on P7 servers.
>
> So the __ieee128 blocks Binary floating-point on AIX?
AIX does not support IEEE 128 bit floating point, only the IBM
double-double format. Also GCC for AIX does not recognize the
attributes and options for other formats, although there are some
patches from Mike to address that.
Thanks, David
