gcc/testsuite/gcc.target/powerpc/bswap-run.c

   1 /* { dg-do run { target powerpc*-*-* } } */
   2 /* { dg-options "-O2 -std=gnu99" } */
   3
   4 extern void abort (void);
   5
   6 static unsigned char bytes[] = { 0, 1, 2, 0x80, 0xff };
   7
   8 unsigned short b16a (unsigned short *p) { return __builtin_bswap16 (*p); }
   9 void b16b (unsigned short *p, unsigned short a) { *p = __builtin_bswap16 (a); }
  10 int b16c (unsigned short a) { return __builtin_bswap16 (a); }
  11
  12 unsigned int b32a (unsigned int *p) { return __builtin_bswap32 (*p); }
  13 void b32b (unsigned int *p, unsigned int a) { *p = __builtin_bswap32 (a); }
  14 static unsigned int b32c (unsigned int a) { return __builtin_bswap32 (a); }
  15
  16 unsigned long long b64a (unsigned long long *p) { return __builtin_bswap64 (*p); }
  17 void b64b (unsigned long long *p, unsigned long long a) { *p = __builtin_bswap64 (a); }
  18 unsigned long long b64c (unsigned long long a) { return __builtin_bswap64 (a); }
  19
  20 int
  21 main (void)
  22 {
  23   unsigned i1, i2, i3, i4, i5;
  24   unsigned b1, b2, b3, b4, b5;
  25   unsigned short b16_inp, b16_exp, b16_var;
  26   unsigned int b32_inp, b32_exp, b32_var;
  27   unsigned long long b64_inp, b64_exp, b64_var;
  28
  29   for (i1 = 0; i1 < sizeof (bytes); i1++)
  30     {
  31       b1 = bytes[i1];
  32       for (i2 = 0; i2 < sizeof (bytes); i2++)
  33         {
  34           b2 = bytes[i2];
  35           b16_inp = (b1 << 8) | b2;
  36           b16_exp = (b2 << 8) | b1;
  37
  38           if (b16a (&b16_inp) != b16_exp)
  39             abort ();
  40
  41           b16b (&b16_var, b16_inp);
  42           if (b16_var != b16_exp)
  43             abort ();
  44
  45           if (b16c (b16_inp) != b16_exp)
  46             abort ();
  47
  48           for (i3 = 0; i3 < sizeof (bytes); i3++)
  49             {
  50               b3 = bytes[i3];
  51               for (i4 = 0; i4 < sizeof (bytes); i4++)
  52                 {
  53                   b4 = bytes[i4];
  54                   b32_inp = (b1 << 24) | (b2 << 16) | (b3 << 8) | b4;
  55                   b32_exp = (b4 << 24) | (b3 << 16) | (b2 << 8) | b1;
  56
  57                   if (b32a (&b32_inp) != b32_exp)
  58                     abort ();
  59
  60                   b32b (&b32_var, b32_inp);
  61                   if (b32_var != b32_exp)
  62                     abort ();
  63
  64                   if (b32c (b32_inp) != b32_exp)
  65                     abort ();
  66
  67                   for (i5 = 0; i5 < sizeof (bytes); i5++)
  68                     {
  69                       b5 = bytes[i5];
  70                       b64_inp = (((unsigned long long)b32_inp) << 32) | b5;
  71                       b64_exp = (((unsigned long long)b5) << 56) | b32_exp;
  72
  73                       if (b64a (&b64_inp) != b64_exp)
  74                         abort ();
  75
  76                       b64b (&b64_var, b64_inp);
  77                       if (b64_var != b64_exp)
  78                         abort ();
  79
  80                       if (b64c (b64_inp) != b64_exp)
  81                         abort ();
  82
  83                       b64_inp = (((unsigned long long)b5) << 56) | b32_inp;
  84                       b64_exp = (((unsigned long long)b32_exp) << 32) | b5;
  85
  86                       if (b64a (&b64_inp) != b64_exp)
  87                         abort ();
  88
  89                       b64b (&b64_var, b64_inp);
  90                       if (b64_var != b64_exp)
  91                         abort ();
  92
  93                       if (b64c (b64_inp) != b64_exp)
  94                         abort ();
  95                     }
  96                 }
  97             }
  98         }
  99     }
 100
 101   return 0;
 102 }