modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr56866.c (about)

     1  /* PR target/56866 */
     2  
     3  int
     4  main ()
     5  {
     6  #if __CHAR_BIT__ == 8 && __SIZEOF_LONG_LONG__ == 8 && __SIZEOF_INT__ == 4 && __SIZEOF_SHORT__ == 2
     7    unsigned long long wq[256], rq[256];
     8    unsigned int wi[256], ri[256];
     9    unsigned short ws[256], rs[256];
    10    unsigned char wc[256], rc[256];
    11    int t;
    12  
    13    __builtin_memset (wq, 0, sizeof wq);
    14    __builtin_memset (wi, 0, sizeof wi);
    15    __builtin_memset (ws, 0, sizeof ws);
    16    __builtin_memset (wc, 0, sizeof wc);
    17    wq[0] = 0x0123456789abcdefULL;
    18    wi[0] = 0x01234567;
    19    ws[0] = 0x4567;
    20    wc[0] = 0x73;
    21  
    22    asm volatile ("" : : "g" (wq), "g" (wi), "g" (ws), "g" (wc) : "memory");
    23  
    24    for (t = 0; t < 256; ++t)
    25      rq[t] = (wq[t] >> 8) | (wq[t] << (sizeof (wq[0]) * __CHAR_BIT__ - 8));
    26    for (t = 0; t < 256; ++t)
    27      ri[t] = (wi[t] >> 8) | (wi[t] << (sizeof (wi[0]) * __CHAR_BIT__ - 8));
    28    for (t = 0; t < 256; ++t)
    29      rs[t] = (ws[t] >> 9) | (ws[t] << (sizeof (ws[0]) * __CHAR_BIT__ - 9));
    30    for (t = 0; t < 256; ++t)
    31      rc[t] = (wc[t] >> 5) | (wc[t] << (sizeof (wc[0]) * __CHAR_BIT__ - 5));
    32  
    33    asm volatile ("" : : "g" (rq), "g" (ri), "g" (rs), "g" (rc) : "memory");
    34  
    35    if (rq[0] != 0xef0123456789abcdULL || rq[1])
    36      __builtin_abort ();
    37    if (ri[0] != 0x67012345 || ri[1])
    38      __builtin_abort ();
    39    if (rs[0] != 0xb3a2 || rs[1])
    40      __builtin_abort ();
    41    if (rc[0] != 0x9b || rc[1])
    42      __builtin_abort ();
    43  #endif
    44    return 0;
    45  }