1/* PR optimization/6842
2   This testcase caused ICE when trying to optimize V8QI subreg of VOIDmode
3   CONST_DOUBLE.  */
4/* { dg-do compile } */
5/* { dg-options "-O2 -mmmx" } */
6
7typedef char __v8qi __attribute__ ((vector_size (8)));
8extern void abort (void);
9extern void exit (int);
10
11void foo (void)
12{
13  unsigned long long a = 0x0102030405060708LL;
14  unsigned long long b = 0x1020304050607080LL;
15  unsigned long long c;
16
17  c = (unsigned long long) __builtin_ia32_paddusb ((__v8qi) a, (__v8qi) b);
18  __builtin_ia32_emms ();
19  if (c != 0x1122334455667788LL)
20    abort ();
21}
22