gcc/testsuite/gcc.dg/tree-ssa/loadpre1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-stats" } */
   3 int foo(int *a, int argc)
   4 {
   5   int c;
   6   int d, e;
   7
   8   /* Should be able to eliminate the second load of *a along the main path. */
   9   d = *a;
  10   if (argc)
  11     {
  12       a = &c;
  13     }
  14   e = *a;
  15   return d + e;
  16 }
  17 /* { dg-final { scan-tree-dump-times "Eliminated: 1" 1 "pre" } } */
  18 /* { dg-final { cleanup-tree-dump "pre" } } */