gcc/testsuite/gcc.dg/20031201-2.c

   1 /* PR optimization/11634 */
   2
   3 /* The following code used to ICE in verify_local_live_at_start on
   4    PA when compiled with -O2.  The cause was that split_all_insns was
   5    not updating liveness information when deleting no-op moves that
   6    had REG_UNUSED notes.  */
   7
   8 /* { dg-do compile { target hppa*-*-* } } */
   9 /* { dg-options "-O2" } */
  10
  11 void *f(void *s);
  12 void H5T_conv_vlen (unsigned long long nelmts, unsigned char *bg_ptr)
  13 {
  14   long long seq_len;
  15   unsigned long long bg_seq_len = 0;
  16   unsigned src_base_size, dst_base_size;
  17   void *tmp_buf = 0;
  18   unsigned tmp_buf_size = 0;
  19   unsigned long long elmtno;
  20   for (elmtno = 0; elmtno < nelmts; elmtno++)
  21     {
  22       unsigned char *tmp = bg_ptr;
  23       bg_seq_len = *tmp;
  24       if (bg_seq_len > 0
  25           && tmp_buf_size <
  26           (unsigned) (bg_seq_len *
  27                       (src_base_size > dst_base_size
  28                        ? src_base_size
  29                        : dst_base_size)))
  30         {
  31           tmp_buf_size =
  32             (unsigned) (bg_seq_len *
  33                         (src_base_size > dst_base_size
  34                          ? src_base_size
  35                          : dst_base_size));
  36         }
  37       if (bg_seq_len < seq_len)
  38         f ((unsigned char *) tmp_buf + dst_base_size * bg_seq_len);
  39     }
  40 }
  41