RE: [PATCH][X86] Fix rounding pattern similar to PR73350

["Koval, Julia" <julia dot koval at intel dot com>]

Hi,

This test hangs on avx512er, maybe that's why:
> According to POSIX, the behavior of a process is undefined after it ignores a SIGFPE, SIGILL, or SIGSEGV signal that was not generated by kill(2) or raise(3).

And volatile make it work even without a patch(r1 and r2 are not combined then).

Added other changes.

Thanks,
Julia


> -----Original Message-----
> From: Uros Bizjak [mailto:ubizjak@gmail.com]
> Sent: Wednesday, June 14, 2017 11:54 AM
> To: Koval, Julia <julia.koval@intel.com>
> Cc: Richard Biener <richard.guenther@gmail.com>; Jakub Jelinek
> <jakub@redhat.com>; H.J. Lu <hjl.tools@gmail.com>; GCC Patches <gcc-
> patches@gcc.gnu.org>; Kirill Yukhin <kirill.yukhin@gmail.com>
> Subject: Re: [PATCH][X86] Fix rounding pattern similar to PR73350
> 
> On Tue, Jun 13, 2017 at 1:37 PM, Koval, Julia <julia.koval@intel.com> wrote:
> > Thank you for your help. I fixed the test similar to existing sigaction tests.
> >
> > gcc/
> >         * config/i386/i386.c: Fix rounding expand for new pattern.
> >         * config/i386/subst.md: Fix pattern (parallel -> unspec).
> > gcc/testsuite/
> >         * gcc.target/i386/pr73350-2.c: New test.
> 
> The test will fail at runtime on non-avx512er targets. Can you please
> test the attached testcase?
> 
> Uros.

Attachment: 0001-fix.patch
Description: 0001-fix.patch