1  /* { dg-do compile } */ 
       2  /* { dg-options "-O2 -ftree-loop-distribution -ftree-loop-distribute-patterns -fdump-tree-ldist-all" } */
       3  
       4  void foo (int * __restrict__ ia,
       5  	  int * __restrict__ ib,
       6  	  int * __restrict__ oxa,
       7  	  int * __restrict__ oxb,
       8  	  int * __restrict__ oya,
       9  	  int * __restrict__ oyb)
      10  {
      11    int i;
      12    long int mya[52];
      13    long int myb[52];
      14  
      15    for (i=0; i < 52; i++)
      16      {
      17        mya[i] = ia[i] * oxa[i] + ib[i] * oxb[i];
      18        myb[i] = -ia[i] * oxb[i] + ib[i] * oxa[i];
      19        oya[i] = 0;
      20        oyb[i] = myb[i] >> 10;
      21      }
      22  
      23    /* This loop should be distributed, and the result should look like
      24       this:
      25       |  memset (oya, 0, 208);
      26       |  for (i=0; i < 52; i++)
      27       |    oyb[i] = -ia[i] * oxb[i] + ib[i] * oxa[i] >> 10;
      28    */
      29  }
      30  
      31  /* { dg-final { scan-tree-dump-times "distributed: split to 1 loops and 1 library calls" 1 "ldist" } } */
      32  /* { dg-final { scan-tree-dump-times "generated memset zero" 1 "ldist" } } */