gcc/testsuite/gcc.dg/sms-7.c

/* { dg-do run } */
/* { dg-options "-O3 -fmodulo-sched -fstrict-aliasing -fdump-rtl-sms -fmodulo-sched-allow-regmoves --param sms-min-sc=1" } */

extern void abort (void);

__attribute__ ((noinline))
void foo (int * __restrict__ a, int * __restrict__ b, short * c) 
{
   int i;
   for(i = 0; i < 100; i+=4)
     {
       a[i] = b[i] * c[i];
       a[i+1] = b[i+1] * c[i+1];
       a[i+2] = b[i+2] * c[i+2];
       a[i+3] = b[i+3] * c[i+3];
     }
}   

int a[100], b[100];
short c[100];

int main()
{
#if (__SIZEOF_INT__ <= 2)
  int i;
  long res;
#else
  int i, res;
#endif  
  for(i = 0; i < 100; i++)
    {
      b[i] = c[i] = i;
    }  
  foo(a, b, c);
  
  res = 0;  
  for(i = 0; i < 100; i++)
    {
      res += a[i];
    }
  if(res != 328350)
    abort();
  
  return 0;        
}