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

On Fri, May 18, 2012 at 7:55 AM, Ryan S. Arnold <> wrote:
> On Wed, May 16, 2012 at 8:19 AM, Tulio Magno Quites Machado Filho
> <> wrote:
>> In the past the "-ftree-loop-linear" switch provided a
>> measurable improvement in performance for certain functions. ÂAt
>> some point it was assigned as the responsibility of Graphite in
>> GCC. ÂIt 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. ÂAs a result some compiler
>> distributors may disable Graphite. ÂIf 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 <>
>> Â Â Â Â* sysdeps/powerpc/powerpc32/power4/Makefile (CFLAGS-wordcopy.c,
>> Â Â Â ÂCFLAGS-memmove.c): remove -ftree-loop-linear.
>> Â Â Â Â* sysdeps/powerpc/powerpc32/power4/fpu/Makefile (CFLAGS-mpa.c):
>> Â Â Â ÂLikewise.
>> Â Â Â Â* sysdeps/powerpc/powerpc64/power4/Makefile (CFLAGS-wordcopy.c,
>> Â Â Â ÂCFLAGS-memmove.c): Likewise.
>> Â Â Â Â* sysdeps/powerpc/powerpc64/power4/fpu/Makefile (CFLAGS-mpa.c):
>> Â Â Â ÂLikewise.
>> ---
>> Âsysdeps/powerpc/powerpc32/power4/Makefile   |  Â4 ++--
>> Âsysdeps/powerpc/powerpc32/power4/fpu/Makefile | Â Â2 +-
>> Âsysdeps/powerpc/powerpc64/power4/Makefile   |  Â4 ++--
>> Âsysdeps/powerpc/powerpc64/power4/fpu/Makefile | Â Â2 +-
>> Â4 files changed, 6 insertions(+), 6 deletions(-)
Pushed upstream with git commit a88b64b9bbf8b2a315206e211250c5529534a477

Ryan S. Arnold

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