[Bug tree-optimization/34378] New: [autovectorize]: missed optimization

["tim at klingt dot org" <gcc-bugzilla at gcc dot gnu dot org>]

in the following code, first function is vectorized, while the second one is
not:

typedef float aligned_float  __attribute__((aligned(4 * sizeof(float))));
typedef aligned_float * __restrict__ restricted_float_ptr;

void test(int n, restricted_float_ptr in, restricted_float_ptr out)
{
    for (int i = 0; i != n; ++i)
        out[i] = in[i] + 1.f;
}

void test2(int n, aligned_float * inarg, aligned_float * outarg)
{
    restricted_float_ptr in = inarg;
    restricted_float_ptr out = outarg;

    for (int i = 0; i != n; ++i)
        out[i] = in[i] + 1.f;
}


-- 
           Summary: [autovectorize]: missed optimization
           Product: gcc
           Version: 4.2.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tim at klingt dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34378