Is it ok to backport this patch to GCC-6?
On 01/23/2017 09:59 AM, Kelvin Nilsen wrote:
>
> The test gcc.dg/loop-8.c makes assumptions that are not valid on Power
> architecture (and on certain other architectures for which this issue
> has already been addressed). The test case assumes that a single
> loop-invariant statement will be moved outside the loop. On Power, a
> constant is copy-propagated within the loop, and the subsequent
> loop-invariant code motion moves two loop-invariant statements out of
> the loop.
>
> This patch simply disables this test case on Power architecture.
>
>
> gcc/testsuite/ChangeLog:
>
> 2017-01-23 Kelvin Nilsen <kel...@gcc.gnu.org>
>
> PR target/66669
> * gcc.dg/loop-8.c: Modify dg-skip-if directive to exclude this
> test on powerpc targets.
>
> Index: gcc/testsuite/gcc.dg/loop-8.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/loop-8.c (revision 244730)
> +++ gcc/testsuite/gcc.dg/loop-8.c (working copy)
> @@ -1,6 +1,6 @@
> /* { dg-do compile } */
> /* { dg-options "-O1 -fdump-rtl-loop2_invariant" } */
> -/* { dg-skip-if "unexpected IV" { "hppa*-*-* mips*-*-* visium-*-*" } { "*" }
> { "" } } */
> +/* { dg-skip-if "unexpected IV" { "hppa*-*-* mips*-*-* visium-*-*
> powerpc*-*-*" } { "*" } { "" } } */
>
> void
> f (int *a, int *b)
>
>
--
Kelvin Nilsen, Ph.D. kdnil...@linux.vnet.ibm.com
home office: 801-756-4821, cell: 520-991-6727
IBM Linux Technology Center - PPC Toolchain
