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/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
/* { dg-require-effective-target ilp32 } */
/* { dg-options "-O1 -fprefetch-loop-arrays -march=athlon -fdump-tree-aprefetch-blocks" } */
 
int a[10000];
 
int foo(unsigned n)
{
  unsigned i, s = 0;
 
  for (i = 0; i < n; i++)
    s += a[i];
 
  return s;
}
 
/* We used to make the probability that the body of the loop (unrolled
   to enable prefetching) is entered 0, which is not correct.  */
 
/* { dg-final { scan-tree-dump-not "Invalid sum" "aprefetch"} } */
/* { dg-final { scan-tree-dump-not "SUCC: 7 .100.0%" "aprefetch"} } */
/* { dg-final { cleanup-tree-dump "aprefetch" } } */