gcc/testsuite/gcc.dg/debug/pr41264-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wno-attributes" } */
   3
   4 #if (__SIZEOF_INT__ <= 2)
   5 typedef unsigned long hashval_t;
   6 #else
   7 typedef unsigned int hashval_t;
   8 #endif
   9 static hashval_t __attribute__((always_inline))
  10 iterative_hash_host_wide_int (long val, hashval_t val2)
  11 {
  12   hashval_t a = (hashval_t) val;
  13   int zero = 0;
  14   hashval_t b = (hashval_t) (val >> (sizeof (hashval_t) * 8 + zero));
  15
  16   a -= b; a -= val2; a ^= (val2>>13);
  17   b -= val2; b -= a; b ^= (a<< 8);
  18   val2 -= a; val2 -= b; val2 ^= ((b&0xffffffff)>>13);
  19   a -= b; a -= val2; a ^= ((val2&0xffffffff)>>12);
  20   b -= val2; b -= a; b = (b ^ (a<<16)) & 0xffffffff;
  21   val2 -= a; val2 -= b; val2 = (val2 ^ (b>> 5)) & 0xffffffff;
  22   a -= b; a -= val2; a = (a ^ (val2>> 3)) & 0xffffffff;
  23   b -= val2; b -= a; b = (b ^ (a<<10)) & 0xffffffff;
  24   val2 -= a; val2 -= b; val2 = (val2 ^ (b>>15)) & 0xffffffff;
  25   return val2;
  26 }
  27
  28 hashval_t
  29 bla (int nunits, int mode)
  30 {
  31   hashval_t hashcode = 0;
  32
  33
  34   hashcode = iterative_hash_host_wide_int (14, hashcode);
  35   hashcode = iterative_hash_host_wide_int (nunits, hashcode);
  36   hashcode = iterative_hash_host_wide_int (mode, hashcode);
  37   if (nunits)
  38     return 0;
  39   else
  40     return hashcode;
  41 }