On Fri, Dec 18, 2015 at 03:49:59PM +0100, Rainer Orth wrote:
> Hi Nathan,
>
> > On 12/18/15 09:36, Rainer Orth wrote:
> >> Hi Nathan,
> >>
> >>> c-c++-common/attr-simd-3.c's use of -fcilkplus means it requires
> >>> pthreads.
> >>
> >> why would this matter for a compile test? What happens without?
> >
> > Executing on host: nvptx-none-gcc
> > /scratch/nsidwell/openacc/trunk-ptx-shared/src/gcc-mainline/gcc/testsuite/c-c++-common/attr-simd-3.c
> > -fno-diagnostics-show-caret -fdiagnostics-color=never -Wc++-compat
> > -fcilkplus -DSTACK_SIZE=8192 -DNO_TRAMPOLINES -DNO_LABEL_VALUES
> > -DSIGNAL_SUPPRESS -S -o attr-simd-3.s (timeout = 600)
> > nvptx-none-gcc: error: unrecognized command line option '-pthread'
> >
> > compiler exited with status 1
> > output is:
> > nvptx-none-gcc: error: unrecognized command line option '-pthread'
> >
> >
> > FAIL: c-c++-common/attr-simd-3.c -Wc++-compat PR68158 (test for errors,
> > line 5)
> > FAIL: c-c++-common/attr-simd-3.c -Wc++-compat (test for excess errors)
> > Excess errors:
> > nvptx-none-gcc: error: unrecognized command line option '-pthread'
>
> ok, I see. I'm uncomfortable declaring the requirement this
> indirectly/unobviously. I'd rather add a requirement on cilkplus (we
> have that effective-target keyword already) and update
> check_effective_target_cilkplus in target-supports.exp for nvptx.
That is what we have in the tree until yesterday and it has been very buggy
(disabled all Cilk+ testing on all architectures).
See PR68629 or the gcc-patches discussions about this for details.
Jakub
