1  /* This tests strength reduction and choice of induction variables.  The targets
       2     for this testcase are quite limited, as with different set of available
       3     addressing modes, the results may be quite different.
       4   
       5     The testcase comes from PR 29256 (and originally, the stream benchmark).  */
       6  
       7  /* { dg-do compile { target { i?86-*-* || { x86_64-*-* || { powerpc_hard_double && { ! powerpc_fprs } } } } } } */
       8  /* { dg-require-effective-target nonpic } */
       9  /* { dg-options "-O3 -fno-tree-loop-distribute-patterns -fno-prefetch-loop-arrays -fdump-tree-optimized -fno-common" } */
      10  
      11  # define N      2000000
      12  double   a[N],c[N];
      13  void tuned_STREAM_Copy()
      14  {
      15    int j;
      16    for (j=0; j<N; j++)
      17      c[j] = a[j];
      18  }
      19  
      20  /* Check that the memory references are based on &a and &c, with appropriate
      21     offsets.  Ideally, we would want each of them to appear once in the output.
      22     However, due to a bug in jump threading, we end up peeling one iteration from
      23     the loop, which creates an additional occurrence.  */
      24  
      25  /* { dg-final { scan-tree-dump-times "MEM\[^;\]*&a" 1 "optimized" } } */
      26  /* { dg-final { scan-tree-dump-times "MEM\[^;\]*&c" 1 "optimized" } } */
      27