gcc/testsuite/gcc.dg/pr51879-17.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-tail-merge -fdump-tree-pre" } */
   3
   4 struct S {
   5   int i;
   6 };
   7
   8 extern struct S foo (void);
   9 extern int foo2 (void);
  10
  11 struct S s, s2;
  12
  13 int bar (int c) {
  14   int r;
  15
  16   if (c)
  17     {
  18       s = foo ();
  19       r = foo2 ();
  20     }
  21   else
  22     {
  23       s2 = foo ();
  24       r = foo2 ();
  25     }
  26
  27   return r;
  28 }
  29
  30 /* { dg-final { scan-tree-dump-times "foo \\(" 2 "pre"} } */
  31 /* { dg-final { scan-tree-dump-times "foo2 \\(" 2 "pre"} } */