gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-stats" } */
   3
   4 struct X { int i; };
   5
   6 int foo (int x)
   7 {
   8   struct X a;
   9   struct X b;
  10   struct X *p;
  11   a.i = 1;
  12   b.i = 2;
  13   if (x)
  14     p = &a;
  15   else
  16     p = &b;
  17   return p->i;
  18 }
  19
  20 /* We should eliminate the load from p for a PHI node with values 1 and 2.  */
  21
  22 /* { dg-final { scan-tree-dump "Eliminated: 1" "pre" } } */