gcc/testsuite/gcc.c-torture/compile/pr83575.c

/* { dg-options "-O2 -funroll-loops -fno-tree-dominator-opts -fno-tree-loop-im -fno-code-hoisting -fno-tree-pre -fno-guess-branch-probability" } */
int tw, be;

void
fp (void)
{
  if (tw == 0)
    goto gq;
  else if (be == 0)
    goto ob;
  else
    return;

  for (;;)
    if (tw < 1)
      {
        while (tw < 1)
          {
 gq:
            tw = 0;
          }

        while (be < 1)
          {
 ob:
            tw = 0;
          }

        while (be < 1)
          ++be;
      }
}