gcc/testsuite/gcc.dg/tree-prof/update-tailcall.c

   1 /* { dg-options "-O2 -fdump-tree-tailc -fdump-tree-optimized" } */
   2 __attribute__ ((noinline))
   3 int factorial(int x)
   4 {
   5    if (x == 1)
   6      return 1;
   7    else
   8      return x*factorial(--x);
   9 }
  10 int gbl;
  11 int
  12 main()
  13 {
  14    gbl = factorial(100);
  15    return 0;
  16 }
  17 /* { dg-final-use { scan-tree-dump-not "Invalid sum" "tailc"} } */
  18 /* { dg-final-use { scan-tree-dump-not "Invalid sum" "optimized"} } */
  19 /* { dg-final-use { cleanup-tree-dump "tailc" } } */
  20 /* { dg-final-use { cleanup-tree-dump "optimized" } } */