[PATCH] [PowerPC] Remove -ftree-loop-linear from Makefiles

[Ryan S. Arnold]

On Wed, May 16, 2012 at 8:19 AM, Tulio Magno Quites Machado Filho
<tuliom@linux.vnet.ibm.com> wrote:
> In the past the "-ftree-loop-linear" switch provided a
> measurable improvement in performance for certain functions.  At
> some point it was assigned as the responsibility of Graphite in
> GCC.  It has been found that even with Graphite enabled these
> flags no longer perform any appreciable improvement over the
> baseline.
>
> Graphite now has some open bugs which need to be fixed in order
> for it to provide measurable performance improvements but it
> lacks active development.  As a result some compiler
> distributors may disable Graphite.  If Graphite is disabled then
> building GLIBC will fail if the "-ftree-loop-linear" switch is used.
>
> This patch removes the use of "-ftree-loop-linear" as unnecessary.
>
> 2012-05-14 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
>
>        * sysdeps/powerpc/powerpc32/power4/Makefile (CFLAGS-wordcopy.c,
>        CFLAGS-memmove.c): remove -ftree-loop-linear.
>        * sysdeps/powerpc/powerpc32/power4/fpu/Makefile (CFLAGS-mpa.c):
>        Likewise.
>        * sysdeps/powerpc/powerpc64/power4/Makefile (CFLAGS-wordcopy.c,
>        CFLAGS-memmove.c): Likewise.
>        * sysdeps/powerpc/powerpc64/power4/fpu/Makefile (CFLAGS-mpa.c):
>        Likewise.
> ---
>  sysdeps/powerpc/powerpc32/power4/Makefile     |    4 ++--
>  sysdeps/powerpc/powerpc32/power4/fpu/Makefile |    2 +-
>  sysdeps/powerpc/powerpc64/power4/Makefile     |    4 ++--
>  sysdeps/powerpc/powerpc64/power4/fpu/Makefile |    2 +-
>  4 files changed, 6 insertions(+), 6 deletions(-)

This patch looks good to me.  I'm going to commit later today.  Thanks Tulio.

Ryan S. Arnold