gcc/testsuite/gcc.c-torture/execute/builtin-bitops-1.c

   1 #include <limits.h>
   2 #include <assert.h>
   3
   4 #if __INT_MAX__ > 2147483647L
   5 # if __INT_MAX__ >= 9223372036854775807L
   6 #  define BITSIZEOF_INT 64
   7 # else
   8 #  define BITSIZEOF_INT 32
   9 # endif
  10 #else
  11 # if __INT_MAX__ >= 2147483647L
  12 #  define BITSIZEOF_INT 32
  13 # else
  14 #  define BITSIZEOF_INT 16
  15 # endif
  16 #endif
  17
  18 #if __LONG_MAX__ > 2147483647L
  19 # if __LONG_MAX__ >= 9223372036854775807L
  20 #  define BITSIZEOF_LONG 64
  21 # else
  22 #  define BITSIZEOF_LONG 32
  23 # endif
  24 #else
  25 # define BITSIZEOF_LONG 32
  26 #endif
  27
  28 #if __LONG_LONG_MAX__ > 2147483647L
  29 # if __LONG_LONG_MAX__ >= 9223372036854775807L
  30 #  define BITSIZEOF_LONG_LONG 64
  31 # else
  32 #  define BITSIZEOF_LONG_LONG 32
  33 # endif
  34 #else
  35 # define BITSIZEOF_LONG_LONG 32
  36 #endif
  37
  38 #define MAKE_FUNS(suffix, type)                                         \
  39 int my_ffs##suffix(type x) {                                            \
  40     int i;                                                              \
  41     if (x == 0)                                                         \
  42          return 0;                                                      \
  43     for (i = 0; i < CHAR_BIT * sizeof (type); i++)                      \
  44         if (x & ((type) 1  << i))                                       \
  45             break;                                                      \
  46     return i + 1;                                                       \
  47 }                                                                       \
  48                                                                         \
  49 int my_ctz##suffix(type x) {                                            \
  50     int i;                                                              \
  51     for (i = 0; i < CHAR_BIT * sizeof (type); i++)                      \
  52         if (x & ((type) 1  << i))                                       \
  53             break;                                                      \
  54     return i;                                                           \
  55 }                                                                       \
  56                                                                         \
  57 int my_clz##suffix(type x) {                                            \
  58     int i;                                                              \
  59     for (i = 0; i < CHAR_BIT * sizeof (type); i++)                      \
  60         if (x & ((type) 1 << ((CHAR_BIT * sizeof (type)) - i - 1)))     \
  61             break;                                                      \
  62     return i;                                                           \
  63 }                                                                       \
  64                                                                         \
  65 int my_popcount##suffix(type x) {                                       \
  66     int i;                                                              \
  67     int count = 0;                                                      \
  68     for (i = 0; i < CHAR_BIT * sizeof (type); i++)                      \
  69         if (x & ((type) 1 << i))                                        \
  70             count++;                                                    \
  71     return count;                                                       \
  72 }                                                                       \
  73                                                                         \
  74 int my_parity##suffix(type x) {                                         \
  75     int i;                                                              \
  76     int count = 0;                                                      \
  77     for (i = 0; i < CHAR_BIT * sizeof (type); i++)                      \
  78         if (x & ((type) 1 << i))                                        \
  79             count++;                                                    \
  80     return count & 1;                                                   \
  81 }
  82
  83 MAKE_FUNS (, unsigned);
  84 MAKE_FUNS (l, unsigned long);
  85 MAKE_FUNS (ll, unsigned long long);
  86
  87 extern void abort (void);
  88 extern void exit (int);
  89
  90 #define NUMS16                                  \
  91   {                                             \
  92     0x0000U,                                    \
  93     0x0001U,                                    \
  94     0x8000U,                                    \
  95     0x0002U,                                    \
  96     0x4000U,                                    \
  97     0x0100U,                                    \
  98     0x0080U,                                    \
  99     0xa5a5U,                                    \
 100     0x5a5aU,                                    \
 101     0xcafeU,                                    \
 102     0xffffU                                     \
 103   }
 104
 105 #define NUMS32                                  \
 106   {                                             \
 107     0x00000000UL,                               \
 108     0x00000001UL,                               \
 109     0x80000000UL,                               \
 110     0x00000002UL,                               \
 111     0x40000000UL,                               \
 112     0x00010000UL,                               \
 113     0x00008000UL,                               \
 114     0xa5a5a5a5UL,                               \
 115     0x5a5a5a5aUL,                               \
 116     0xcafe0000UL,                               \
 117     0x00cafe00UL,                               \
 118     0x0000cafeUL,                               \
 119     0xffffffffUL                                \
 120   }
 121
 122 #define NUMS64                                  \
 123   {                                             \
 124     0x0000000000000000ULL,                      \
 125     0x0000000000000001ULL,                      \
 126     0x8000000000000000ULL,                      \
 127     0x0000000000000002ULL,                      \
 128     0x4000000000000000ULL,                      \
 129     0x0000000100000000ULL,                      \
 130     0x0000000080000000ULL,                      \
 131     0xa5a5a5a5a5a5a5a5ULL,                      \
 132     0x5a5a5a5a5a5a5a5aULL,                      \
 133     0xcafecafe00000000ULL,                      \
 134     0x0000cafecafe0000ULL,                      \
 135     0x00000000cafecafeULL,                      \
 136     0xffffffffffffffffULL                       \
 137   }
 138
 139 unsigned int ints[] =
 140 #if BITSIZEOF_INT == 64
 141 NUMS64;
 142 #elif BITSIZEOF_INT == 32
 143 NUMS32;
 144 #else
 145 NUMS16;
 146 #endif
 147
 148 unsigned long longs[] =
 149 #if BITSIZEOF_LONG == 64
 150 NUMS64;
 151 #else
 152 NUMS32;
 153 #endif
 154
 155 unsigned long long longlongs[] =
 156 #if BITSIZEOF_LONG_LONG == 64
 157 NUMS64;
 158 #else
 159 NUMS32;
 160 #endif
 161
 162 #define N(table) (sizeof (table) / sizeof (table[0]))
 163
 164 int
 165 main (void)
 166 {
 167   int i;
 168
 169   for (i = 0; i < N(ints); i++)
 170     {
 171       if (__builtin_ffs (ints[i]) != my_ffs (ints[i]))
 172         abort ();
 173       if (ints[i] != 0
 174           && __builtin_clz (ints[i]) != my_clz (ints[i]))
 175         abort ();
 176       if (ints[i] != 0
 177           && __builtin_ctz (ints[i]) != my_ctz (ints[i]))
 178         abort ();
 179       if (__builtin_popcount (ints[i]) != my_popcount (ints[i]))
 180         abort ();
 181       if (__builtin_parity (ints[i]) != my_parity (ints[i]))
 182         abort ();
 183     }
 184
 185   for (i = 0; i < N(longs); i++)
 186     {
 187       if (__builtin_ffsl (longs[i]) != my_ffsl (longs[i]))
 188         abort ();
 189       if (longs[i] != 0
 190           && __builtin_clzl (longs[i]) != my_clzl (longs[i]))
 191         abort ();
 192       if (longs[i] != 0
 193           && __builtin_ctzl (longs[i]) != my_ctzl (longs[i]))
 194         abort ();
 195       if (__builtin_popcountl (longs[i]) != my_popcountl (longs[i]))
 196         abort ();
 197       if (__builtin_parityl (longs[i]) != my_parityl (longs[i]))
 198         abort ();
 199     }
 200
 201   for (i = 0; i < N(longlongs); i++)
 202     {
 203       if (__builtin_ffsll (longlongs[i]) != my_ffsll (longlongs[i]))
 204         abort ();
 205       if (longlongs[i] != 0
 206           && __builtin_clzll (longlongs[i]) != my_clzll (longlongs[i]))
 207         abort ();
 208       if (longlongs[i] != 0
 209           && __builtin_ctzll (longlongs[i]) != my_ctzll (longlongs[i]))
 210         abort ();
 211       if (__builtin_popcountll (longlongs[i]) != my_popcountll (longlongs[i]))
 212         abort ();
 213       if (__builtin_parityll (longlongs[i]) != my_parityll (longlongs[i]))
 214         abort ();
 215     }
 216
 217   /* Test constant folding.  */
 218
 219 #define TEST(x, suffix)                                                 \
 220   if (__builtin_ffs##suffix (x) != my_ffs##suffix (x))                  \
 221     abort ();                                                           \
 222   if (x != 0 && __builtin_clz##suffix (x) != my_clz##suffix (x))        \
 223     abort ();                                                           \
 224   if (x != 0 && __builtin_ctz##suffix (x) != my_ctz##suffix (x))        \
 225     abort ();                                                           \
 226   if (__builtin_popcount##suffix (x) != my_popcount##suffix (x))        \
 227     abort ();                                                           \
 228   if (__builtin_parity##suffix (x) != my_parity##suffix (x))            \
 229     abort ();
 230
 231 #if BITSIZEOF_INT == 32
 232   TEST(0x00000000UL,);
 233   TEST(0x00000001UL,);
 234   TEST(0x80000000UL,);
 235   TEST(0x40000000UL,);
 236   TEST(0x00010000UL,);
 237   TEST(0x00008000UL,);
 238   TEST(0xa5a5a5a5UL,);
 239   TEST(0x5a5a5a5aUL,);
 240   TEST(0xcafe0000UL,);
 241   TEST(0x00cafe00UL,);
 242   TEST(0x0000cafeUL,);
 243   TEST(0xffffffffUL,);
 244 #endif
 245
 246 #if BITSIZEOF_LONG_LONG == 64
 247   TEST(0x0000000000000000ULL, ll);
 248   TEST(0x0000000000000001ULL, ll);
 249   TEST(0x8000000000000000ULL, ll);
 250   TEST(0x0000000000000002ULL, ll);
 251   TEST(0x4000000000000000ULL, ll);
 252   TEST(0x0000000100000000ULL, ll);
 253   TEST(0x0000000080000000ULL, ll);
 254   TEST(0xa5a5a5a5a5a5a5a5ULL, ll);
 255   TEST(0x5a5a5a5a5a5a5a5aULL, ll);
 256   TEST(0xcafecafe00000000ULL, ll);
 257   TEST(0x0000cafecafe0000ULL, ll);
 258   TEST(0x00000000cafecafeULL, ll);
 259   TEST(0xffffffffffffffffULL, ll);
 260 #endif
 261
 262   exit (0);
 263 }