gcc-4.9/gcc/testsuite/gcc.dg/pr54919.c


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/* PR tree-optimization/54919 */
/* Testcase by Zdenek Sojka <zsojka@seznam.cz> */

/* { dg-do run } */
/* { dg-options "-O3 -ffast-math -funroll-loops -fvariable-expansion-in-unroller" } */

int a[10];
extern void abort(void) __attribute__((noreturn));

int __attribute__((__noinline__, __noclone__))
foo (void)
{
  double d;
  int i;
  for (i = 0, d = 0; i < 64; i++)
    d--;
  return (int) d;
}

int
main (void)
{
  if (foo () != -64)
    abort ();
  return 0;
}