1  /* PR tree-optimization/28887 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fprefetch-loop-arrays -w" } */
       4  /* { dg-options "-O2 -fprefetch-loop-arrays -march=i686 -msse -w" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
       5  
       6  __extension__ typedef __SIZE_TYPE__ size_t;
       7  
       8  struct re_pattern_buffer
       9  {
      10    size_t re_nsub;
      11  };
      12  
      13  typedef enum
      14  {
      15    start_memory,
      16  } re_opcode_t;
      17  
      18  typedef union
      19  {
      20    struct
      21    {
      22      unsigned matched_something:1;
      23    } bits;
      24  } byte_register_info_type;
      25  
      26  void byte_re_match_2_internal (struct re_pattern_buffer *bufp)
      27  {
      28    int mcnt;
      29    size_t num_regs = bufp->re_nsub + 1;
      30    byte_register_info_type *reg_info;
      31    for (mcnt = 1; (unsigned) mcnt < num_regs; mcnt++)
      32      {
      33        ((reg_info[mcnt]).bits.matched_something) = 0;
      34      }
      35  }
      36