gcc/testsuite/gcc.dg/pr42629.c

   1 /* This failed -fcompare-debug because register pressure computation
   2    took debug insns into account.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-O1 -fsched-pressure -fschedule-insns -fcompare-debug" } */
   5
   6 int lzo_adler32(int adler, char *buf)
   7 {
   8   int s1 = adler;
   9   int s2 = adler;
  10   s1 += buf[0];
  11   s2 += s1;
  12   s1 += buf[1];
  13   s2 += s1;
  14   s1 += buf[2];
  15   s2 += s1;
  16   s1 += buf[3];
  17   s2 += s1;
  18   s1 += buf[4];
  19   s2 += s1;
  20   s1 += buf[5];
  21   s2 += s1;
  22   s1 += buf[6];
  23   s2 += s1;
  24   s1 += buf[7];
  25   s2 += s1;
  26   return (s2 << 16) + s1;
  27 }