gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-6.c

   1 /* Test normalization of ARRAY_REF expressions to MEM_REFs in dom.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O1 -fno-tree-fre -fdump-tree-dom2" } */
   4
   5 int
   6 main (int argc, char **argv)
   7 {
   8   union {
   9     int a[4];
  10     int b[2];
  11   } u;
  12   u.a[0] = 1;
  13   u.a[1] = 42;
  14   u.a[2] = 3;
  15   u.a[3] = 4;
  16   __builtin_printf ("%d\n", u.a[argc]);
  17   return u.b[1];
  18 }
  19
  20 /* { dg-final { scan-tree-dump-times "return 42;" 1 "dom2" } } */