gcc/testsuite/gcc.dg/tree-ssa/loadpre14.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-pre-stats" } */
   3 typedef int type[2];
   4 int foo(type *a, int argc)
   5 {
   6   type c = {0, 1};
   7   int d, e;
   8
   9   /* Should be able to eliminate the second load of *a and the add of zero
  10      along the main path. */
  11   d = (*a)[0];
  12   if (argc)
  13     {
  14       a = &c;
  15     }
  16   e = (*a)[0];
  17   return d + e;
  18 }
  19 /* { dg-final { scan-tree-dump-times "Eliminated: 2" 1 "pre"} } */