gcc/testsuite/gcc.target/powerpc/vec-gnb-0.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target int128 } */
   3 /* { dg-options "-mdejagnu-cpu=power10" } */
   4
   5 #include <altivec.h>
   6
   7 extern void abort (void);
   8
   9 unsigned long long int
  10 do_vec_gnb (vector unsigned __int128 source, int stride)
  11 {
  12   switch (stride)
  13     {
  14     case 2:
  15       return vec_gnb (source, 2);
  16     case 3:
  17       return vec_gnb (source, 3);
  18     case 4:
  19       return vec_gnb (source, 4);
  20     case 5:
  21       return vec_gnb (source, 5);
  22     case 6:
  23       return vec_gnb (source, 6);
  24     case 7:
  25       return vec_gnb (source, 7);
  26
  27     default:
  28       /* Illegal value of stride */
  29       abort ();
  30       return 0;
  31     }
  32 }
  33
  34 int
  35 main (int argc, char *argv [])
  36 {
  37   /* For result = 0xaaaa_0000_0000_0000, use:
  38       stride = 2: binary 1x0x_1x0x_1x0x_... = 0x8888_8888_0000_0000, 0
  39       stride = 4: binary 1xxx_0xxx_1xxx_0xxxx = 0x8080_8080_8080_8080, 0
  40
  41      For result = 0xaaaa_aaaa_0000_0000, use:
  42       stride = 2: source = 0x8888_8888_8888_8888, 0x0 }
  43       stride = 4: source = { 0x8080_8080_8080_8080, 0x8080_8080_8080_8080 }
  44   */
  45
  46   /* The last array element appears in the left-most (first) bit
  47      positions of the vector register.  */
  48   vector unsigned __int128 source_a =
  49     { ((unsigned __int128) 0x8888888800000000ull) << 64 };
  50   vector unsigned __int128 source_b =
  51     { ((unsigned __int128) 0x8080808080808080ull) << 64 };
  52   vector unsigned __int128 source_c =
  53     { ((unsigned __int128) 0x8888888888888888ull) << 64 };
  54   vector unsigned __int128 source_d =
  55     { 0x8080808080808080ull |
  56       ((unsigned __int128) 0x8080808080808080ull) << 64 };
  57
  58   unsigned long long int results [] =
  59     { 0xaaaa000000000000ull, 0xaaaa000000000000ull,
  60       0xaaaaaaaa00000000ull, 0xaaaaaaaa00000000ull };
  61
  62   if (do_vec_gnb (source_a, 2) != results [0])
  63     abort ();
  64   if (do_vec_gnb (source_b, 4) != results [1])
  65     abort ();
  66   if (do_vec_gnb (source_c, 2) != results [2])
  67     abort ();
  68   if (do_vec_gnb (source_d, 4) != results [3])
  69     abort ();
  70
  71   return 0;
  72 }
  73
  74 /* { dg-final { scan-assembler {\mvgnb\M} } } */