[Bug tree-optimization/71647] New: aligned(x:32) in #pragma omp simd does not work

["niva at niisi dot msk.ru" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71647

            Bug ID: 71647
           Summary: aligned(x:32) in #pragma omp simd does not work
           Product: gcc
           Version: 6.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: niva at niisi dot msk.ru
  Target Milestone: ---

Created attachment 38759
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38759&action=edit
The source file to reproduce the problem.

I use gcc (GCC) 6.1.1 20160623. The command line is:

gcc -O3 -S -mavx -fopt-info-vec-optimized  -fopenmp-simd  test1a.c 

When I use #pragma omp simd aligned(a,b:32) in the source file (see
attachment), the compiler reports:

test1a.c:9:8: note: loop vectorized
test1a.c:9:8: note: loop peeled for vectorization to enhance alignment

But when I use #pragma omp simd aligned(a,b:4*sizeof(double)),
the alignment is taken into account, and the compiler output is:

test1a.c:9:8: note: loop vectorized

gcc 5.3.1 works ok in both cases.