gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-sink-stats" } */
   3 extern int foo (int *, int *);
   4 extern int foo2 (int);
   5 int
   6 main (int argc)
   7 {
   8   int a, b, c;
   9   b = argc + 1;
  10   c = argc + 2;
  11   a = b + c;
  12   if (argc)
  13     {
  14       foo (&b, &c);
  15       a = b + c;
  16     }
  17   foo2 (a);
  18 }
  19 /* We should sink the first a = b + c calculation into the else branch  */
  20 /* { dg-final { scan-tree-dump-times "Sunk statements:1" 1 "sink" } } */
  21 /* { dg-final { cleanup-tree-dump "sink" } } */