gcc/testsuite/gcc.dg/pr87074.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -floop-unroll-and-jam --param unroll-jam-min-percent=0" } */
   3 long b;
   4 unsigned c[5];
   5 unsigned long long d = 3;
   6 int e, f, g;
   7
   8 void h() {
   9   for (; f < 11; f++) {
  10     b = g;
  11     for (e = 0; e < 5; e++) {
  12       c[e] = e - b - (c[e] >> 5);
  13       g = c[e];
  14     }
  15   }
  16   if (c[0])
  17     d = 0;
  18 }
  19
  20 extern void abort(void);
  21 int main() {
  22   h();
  23   if (d != 0)
  24     abort ();
  25 }