gcc/testsuite/gcc.dg/unroll-1.c

   1 /* PR optimization/8599 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -funroll-loops" } */
   4 /* { dg-options "-mtune=k6 -O2 -funroll-loops" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
   5
   6
   7 extern void abort (void);
   8
   9 int array[6] = { 1,2,3,4,5,6 };
  10
  11 void foo()
  12 {
  13   int i;
  14
  15   for (i = 0; i < 5; i++)
  16     array[i] = 0;
  17 }
  18
  19 int main()
  20 {
  21   foo();
  22   if (array[0] || array [1] || array[2] || array[3] || array[4])
  23     abort ();
  24   if (array[5] != 6)
  25     abort ();
  26   return 0;
  27 }