gcc/testsuite/gcc.dg/tree-ssa/loadpre3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-stats" } */
   3 int foo(int **a,int argc)
   4 {
   5   int b;
   6   int d, e;
   7
   8   if (argc)
   9     {
  10       d = *(*a);
  11     }
  12   else
  13     {
  14
  15     }
  16   /* Should be able to eliminate one of the *(*a)'s along the if path
  17      by pushing it into the else path. We will also eliminate
  18      one of the *a's.  */
  19   e = *(*a);
  20   return d + e;
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "Eliminated: 2" 1 "pre"} } */
  24 /* { dg-final { cleanup-tree-dump "pre" } } */