gcc/testsuite/gcc.dg/pr80747.c

   1 /* PR rtl-optimization/80747 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-fprofile-use -freorder-blocks-and-partition -O1 -foptimize-sibling-calls" } */
   4
   5 int
   6 foo (int a)
   7 {
   8   int r;
   9   if (a & 1)
  10     r = foo (a - 1);
  11   else if (a)
  12     r = foo (a - 2);
  13   else
  14     return 0;
  15   if (r)
  16     r = r;
  17   return r;
  18 }