Re: [PATCH] Add testcase for PR83252 (was Re: patch to fix PR80818)

[Jakub Jelinek <jakub at redhat dot com>]

On Fri, Dec 08, 2017 at 01:38:36PM +0100, Rainer Orth wrote:
> Hi Jakub,
> 
> > On Wed, Nov 29, 2017 at 05:21:22PM -0500, Vladimir Makarov wrote:
> >>   The following patch fixes
> >> 
> >> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80818
> >> 
> >>   The patch was successfully tested and bootstrapped on x86_64. The patch
> >> has no test because it is hard to check the problem.  I checked manually
> >
> > This changed fixed PR83252 which has a reasonably small testcase.
> > I've further reduced it using creduce (with -O0 -W{,maybe-}uninitialized
> > and/or -fsanitize=undefined checking, plus test that it succeeds with
> > r255258 and fails with r255257).  Can you please double check if the
> > testcase represents the same issue you were working on or if your change
> > merely made the bug latent again?
> >
> > 2017-12-04  Jakub Jelinek  <jakub@redhat.com>
> >
> > 	PR target/83252
> > 	* gcc.target/i386/i386.exp (check_effective_target_bmi2): Moved to ...
> > 	* lib/target-supports.exp (check_effective_target_bmi2): ... here.  Guard with
> > 	i?86-*-* x86_64-*-*.
> > 	* g++.dg/opt/pr83252.C: New test.
> 
> the new testcase FAILs on Solaris/x86 with /bin/as:
> 
> +FAIL: g++.dg/opt/pr83252.C  -std=gnu++11 execution test
> +FAIL: g++.dg/opt/pr83252.C  -std=gnu++14 execution test
> +FAIL: g++.dg/opt/pr83252.C  -std=gnu++98 execution test
> 
> ld.so.1: pr83252.exe: fatal: pr83252.exe: hardware capability (CA_SUNW_HW_2) unsupported: 0x80  [ BMI2 ]
> 
> Inside gcc.target/i386, clearcap.exp takes care of that.

This can't be in gcc.target/i386/, because the test has to be C++ (doesn't
fail in C).

So dg-skip-if on Solaris, or { target { bmi2 && { ! *-*-solaris* } } } for
the -mbmi2 option?

	Jakub