gcc/testsuite/gcc.dg/tree-ssa/tailcall-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-tailc-details" } */
   3 /* Test provided by Richard Earnshaw in PR 14312.  */
   4
   5 void bar (int i);
   6 void baz (int *);
   7
   8 void
   9 foo (int *x)
  10 {
  11   if (*x < 0)
  12     {
  13       baz (x);
  14       return;
  15     }
  16   bar (*x);
  17 }
  18
  19 /* The test has no local call-clobbered variables.  Only the memory
  20    tag for 'x' is call-clobbered.  And since tags are not real
  21    variables, they ought to be ignored.  There should be two tail
  22    calls here.  */
  23 /* { dg-final { scan-tree-dump-times "Found tail call" 2 "tailc"} } */
  24 /* { dg-final { cleanup-tree-dump "tailc" } } */