1  /* { dg-do compile } */
       2  /* We don't (and don't want to) perform this optimisation on soft-float
       3     targets, where each addition is a library call.  */
       4  /* { dg-require-effective-target hard_float } */
       5  /* { dg-options "-O2 -funroll-loops --fast-math -fvariable-expansion-in-unroller -fdump-rtl-loop2_unroll" } */
       6  /* { dg-additional-options "--param max-completely-peel-times=16  --param max-unroll-times=8" { target s390*-*-* } } */
       7  
       8  extern void abort (void);
       9  
      10  float array[30] = { 1,2,3,4,5,6,7,8,9,10 };
      11  
      12  int foo (int n)
      13  {
      14    unsigned i;
      15    float accum = 1.0;
      16  
      17    for (i = 0; i < n; i++)
      18      accum += array[i];
      19  
      20    return accum;
      21  }
      22  
      23  int main (void)
      24  {
      25    return foo (10);
      26  }
      27  
      28  /* { dg-final { scan-rtl-dump "Expanding Accumulator" "loop2_unroll" } } */