1  /* PR tree-optimizations/40351 */
       2  
       3  struct IO_APIC_route_entry {
       4      unsigned int vector : 8;
       5      unsigned int delivery_mode : 1;
       6      unsigned int mask : 1;
       7      unsigned int __reserved_2 : 15;
       8      unsigned int __reserved_3 : 8;
       9  } __attribute__ ((packed));
      10  union entry_union {
      11      struct {
      12          unsigned int w1, w2;
      13      };
      14      struct IO_APIC_route_entry entry;
      15  };
      16  unsigned int io_apic_read(void);
      17  struct IO_APIC_route_entry ioapic_read_entry(void)
      18  {
      19    union entry_union eu;
      20    eu.w1 = io_apic_read();
      21    return eu.entry;
      22  }