1 /* { dg-do compile } */
2 /* { dg-options "-O1" } */
3 
4 /* This assignment might be implemented with a mem copy from the
5    literal pool with two BLKmode operands.  This produced an ICE on S/390
6    since simplify_subreg was called for such a BLKmode operand.  */
7 
8 struct a
9 {
10   unsigned long b:24;
11 };
12 
13 void
foo(struct a * t)14 foo (struct a *t)
15 {
16   t->b = 32;
17 }
18