Hi! On Wed, 11 Nov 2015 08:59:17 -0500, Nathan Sidwell <[email protected]> wrote: > On 11/11/15 07:06, Bernd Schmidt wrote: > > On 11/10/2015 11:33 PM, Nathan Sidwell wrote: > >> I've been unable to introduce a testcase for this.
(But you still committed an update to gcc/testsuite/ChangeLog.)
You'll need to put such an offloading test into the libgomp testsuite --
offloading complation requires linking, and during that, the offloading
compiler(s) will be invoked, which only the libgomp testsuite is set up
to do, as discussed before.
> >> The difficulty is we
> >> want to check an rtl dump from the acceleration compiler, and there
> >> doesn't appear to be existing machinery for that in the testsuite.
> >> Perhaps something to be added later?
> >
> > What's the difficulty exactly? Getting a dump should be possible with
> > -foffload=-fdump-whatever, does the testsuite have a problem finding the
> > right
> > filename?
Currently, this will create cc* files, for example ccdjj2z9.o.271r.final
for -foffload=-fdump-rtl-final. (I don't know if you can come up with
dg-* directives to scan these.) The reason is -- I think -- because of
the lto-wrapper and/or mkoffloads not specifying a more suitable "base
name" for the temporary input files to lto1.
> That's not the problem. How to conditionally enable the test is the
> difficulty.
> I suspect porting something concerning accel_compiler from the libgomp
> testsuite is needed?
Use "{ target openacc_nvidia_accel_selected }", as implemented by
libgomp/testsuite/lib/libgomp.exp:check_effective_target_openacc_nvidia_accel_selected
(already present on trunk).
Grüße
Thomas
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