gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-55.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized -Wno-psabi" } */
   3
   4 typedef int v4si __attribute__((vector_size(16)));
   5
   6 int f(v4si t)
   7 {
   8   union {
   9       v4si t1;
  10       int t2[4];
  11   } u;
  12   u.t1 = t;
  13   return u.t2[1];
  14 }
  15
  16 /* { dg-final { scan-tree-dump-not "u;" "optimized" } } */
  17 /* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 1 "optimized" } } */