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

[Ryan S. Arnold]

On Fri, May 18, 2012 at 7:55 AM, Ryan S. Arnold <ryan.arnold@gmail.com> wrote:
> 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(-)
Pushed upstream with git commit a88b64b9bbf8b2a315206e211250c5529534a477

Ryan S. Arnold