gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-76.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1" } */
   3
   4 typedef int v4si __attribute__((vector_size(__SIZEOF_INT__ * 4)));
   5 int foo (int *a)
   6 {
   7   __builtin_memset (a, 0, 2 * __SIZEOF_INT__);
   8   a[2] = 2;
   9   a[0] = 1;
  10   a[3] = 3;
  11   v4si x = *(v4si *)a;
  12   *(v4si *)&a[4] = x;
  13   return a[4] + a[5] + a[7];
  14 }
  15
  16 /* { dg-final { scan-tree-dump "return 4;" "fre1" } } */