1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fsplit-paths -fdump-tree-dom3-details" } */
       3  
       4  /* There should be two references to bufferstep that turn into
       5     constants.  */
       6  /* { dg-final { scan-tree-dump-times "Replaced .bufferstep_\[0-9\]+. with constant .0." 1 "dom3"} } */
       7  /* { dg-final { scan-tree-dump-times "Replaced .bufferstep_\[0-9\]+. with constant .1." 1 "dom3"} } */
       8  
       9  /* And some assignments ought to fold down to constants.  */
      10  /* { dg-final { scan-tree-dump-times "Folded to: _\[0-9\]+ = 1;" 1 "dom3"} } */
      11  /* { dg-final { scan-tree-dump-times "Folded to: _\[0-9\]+ = 0;" 1 "dom3"} } */
      12  
      13  /* The XOR operations should have been optimized to constants.  */
      14  /* { dg-final { scan-tree-dump-not "bit_xor" "dom3"} } */
      15  
      16  
      17  extern int *stepsizeTable;
      18  
      19  void
      20  adpcm_coder (signed char *outdata, int len)
      21  {
      22    signed char *outp;
      23    int delta;
      24    int outputbuffer;
      25    int bufferstep = 0;
      26    outp = (signed char *) outdata;
      27    int step = 0;
      28    int index = 0;
      29    int diff = 0;
      30    for (; len > 0; len--)
      31      {
      32        delta = 0;
      33        if (diff >= step)
      34  	delta = 4;
      35        step = stepsizeTable[index];
      36        if (bufferstep)
      37  	outputbuffer = (delta << 4) & 0xf0;
      38        else
      39  	*outp++ = (delta & 0x0f) | outputbuffer;
      40        bufferstep = !bufferstep;
      41      }
      42  }