gcc/testsuite/gcc.dg/sms-8.c

   1 /*  This test is a reduced test case for a bug that caused
   2     bootstrapping with -fmodulo-sched.  Related to a broken anti-dep
   3     that was not fixed by reg-moves.  */
   4
   5  /* { dg-do run } */
   6  /* { dg-options "-O2 -fmodulo-sched -fmodulo-sched-allow-regmoves -fdump-rtl-sms --param sms-min-sc=1" } */
   7
   8 extern void abort (void);
   9
  10 __attribute__ ((noinline))
  11 unsigned long long
  12 foo (long long ixi, unsigned ctr)
  13 {
  14   unsigned long long irslt = 1;
  15   long long ix = ixi;
  16
  17   for (; ctr; ctr--)
  18     {
  19       irslt *= ix;
  20       ix *= ix;
  21     }
  22
  23   if (irslt != 14348907)
  24     abort ();
  25   return irslt;
  26 }
  27
  28
  29 int
  30 main ()
  31 {
  32   unsigned long long res;
  33
  34   res = foo (3, 4);
  35   return 0;
  36 }