Hi,

This patch fixes the vectorizer testsuite failures at -m64 on darwin,
reported in:
http://gcc.gnu.org/ml/gcc/2007-08/msg00052.html

The failures are because of this patch:
http://gcc.gnu.org/ml/gcc-cvs/2007-07/msg00447.html
http://gcc.gnu.org/ml/gcc-patches/2007-07/msg00082.html
...that, for 64bit darwin, tells the vectorizer that data cannot be assumed
to be naturally aligned, which in turn means that we cannot use loop
peeling to force data alignment on 64bit darwin. So testcases that expect
peeling to happen need to be updated accordingly.

Thanks to Jack Howarth for testing the patch on powerpc-apple-darwin9
(both -m32 and -m64).
I tested it on powerp64-linux (both -m32 and -m64) and i386-linux (only
-m32).
Thanks to Ira for testing on x86_64.

I will commit this patch to mainline later today

dorit

        * gcc.dg/vect/vect-28.c: Fix test to not expect peeling on
        !vector_alignment_reachable targets.
        * gcc.dg/vect/vect-33.c: Likewise.
        * gcc.dg/vect/vect-42.c: Likewise.
        * gcc.dg/vect/vect-44.c: Likewise.
        * gcc.dg/vect/vect-50.c: Likewise.
        * gcc.dg/vect/vect-70.c: Likewise.
        * gcc.dg/vect/vect-71.c: Likewise.
        * gcc.dg/vect/vect-87.c: Likewise.
        * gcc.dg/vect/vect-88.c: Likewise.
        * gcc.dg/vect/vect-91.c: Likewise.
        * gcc.dg/vect/vect-93.c: Likewise.
        * gcc.dg/vect/vect-96.c: Likewise.
        * gcc.dg/vect/no-section-anchors-69.c: Likewise.
        * gcc.dg/vect/section-anchors-69.c: Likewise.
        * gcc.dg/vect/pr25413.c: Likewise.
        * gcc.dg/vect/costmodel/ppc/costmodel-33.c: Likewise.
        * gcc.dg/vect/costmodel/ppc/costmodel-76b.c: Likewise.
        * gfortran.dg/vect-2.f90: Likewise.
        * gfortran.dg/vect-3.f90: Likewise.
        * gfortran.dg/vect-4.f90: Likewise.
        * gfortran.dg/vect-5.f90: Likewise.
        * lib/target-supports.exp
(check_effective_target_natural_alignment):
        Return false for darwin.
        (check_effective_target_vector_alignment_reachable_for_double):
New.

(See attached file: reachable_alignment_vecttestfixes.txt)