Hi!
On Wed, May 20, 2020 at 10:56:21AM -0700, Douglas B Rupp wrote:
> >So, which spec are those 4 lines above from?
> From -with-specs=<blah> in the configure command. We use that
> capability extensively for VxWorks.
static const char *const driver_self_specs[] = {
"%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS
};
for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
do_self_spec (driver_self_specs[i]);
so that *should* work. Good.
> >We have as DRIVER_SELF_SPECS (see rs6000.h)
> >#define DRIVER_SELF_SPECS \
> > "%{mdejagnu-cpu=*: %<mcpu=* -mcpu=%*}", \
> > "%{mdejagnu-tune=*: %<mtune=* -mtune=%*}", \
> > "%{mdejagnu-*: %<mdejagnu-*}", \
> > SUBTARGET_DRIVER_SELF_SPECS
> >so -mdejagnu-cpu= is translated to -mcpu= very early. But yours is
> >still done earlier?
> Interesting. I've been testing on a modified gcc-9, and I don't have
> the DRIVER_SELF_SPECS for rs6000.h. Possibly this problem will be
> solved by backporting this macro? I can't yet run the fsf-testsuite
> for vxworks on gcc-11 until many more vxworks specific hunks have been
> ported.
Ah, we never backported that, we still do my not-so-very-good first
implementation on GCC 9.
I'll get it backported.
> >It can of course be fixed by adding
> >
> >%{mdejagnu-cpu=604:%{!maltivec:%{!mno-altivec:-mno-altivec}}}
> >%{mdejagnu-cpu=604:%{!mvsx:%{!mno-vsx:-mno-vsx}}}
> >%{!mdejagnu-cpu=*:%{!maltivec:%{!mno-altivec:-mno-altivec}}}
> >%{!mdejagnu-cpu=*:%{!mvsx:%{!mno-vsx:-mno-vsx}}}
> >
> >to your specs, but that is band-aid on top of band-aid.
> Indeed
> > Why do you want
> >to add -mno-altivec -mno-vsx whenever possible, anyway?
>
> Clearly these aren't supported in the VxWorks kernel and adding them
> helps with getting a cleaner testsuite result. If you're asking beyond
> those reasons, I'll have to dig a bit more to give an answer.
Well, kernel only matters for run tests (normally :-) ), and those
should already be skipped for you.
I'll do the backport. Thanks for getting to the bottom of this!
Segher
