gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-84.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1" } */
   3
   4 typedef int v4si __attribute__((vector_size(16)));
   5
   6 void foo (v4si *dst, int x)
   7 {
   8   v4si v[2];
   9   v[0][0] = 1;
  10   v[0][1] = x;
  11   v[0][2] = 2;
  12   v[0][3] = 3;
  13   v[0][1] = 0;
  14   *dst = v[0];
  15 }
  16
  17 /* The shadowed non-constant assign to v[0][1] shouldn't prevent us from
  18    value-numbering the load to a constant.  */
  19 /* { dg-final { scan-tree-dump "\\*dst_\[0-9\]*\\\(D\\) = { 1, 0, 2, 3 };" "fre1" } } */