gcc/testsuite/gcc.dg/vmx/x-05.c

   1 #include <altivec.h>
   2
   3 static vector unsigned char select2 = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2};
   4 static vector unsigned char select3 = {4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4};
   5 static vector unsigned char select4 = {8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8};
   6 static vector unsigned char select5 = {16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16};
   7 static vector unsigned char select6 = {32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32};
   8 static vector unsigned char select7 = {64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64};
   9 static vector unsigned char select8 = {128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128};
  10
  11 static vector unsigned char control1
  12   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  13 static vector unsigned char control2
  14   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  15 static vector unsigned char control3
  16   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  17 static vector unsigned char control4
  18   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  19 static vector unsigned char control5
  20   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  21 static vector unsigned char control6
  22   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  23 static vector unsigned char control7
  24   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  25 static vector unsigned char control8
  26   = {15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
  27 static vector unsigned char rotate1 = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
  28 static vector unsigned char rotate2 = {3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3};
  29 static vector unsigned char rotate3 = {5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5};
  30 static vector unsigned char rotate4 = {7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
  31 static vector unsigned char rotate5 = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
  32 static vector unsigned char rotate6 = {3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3};
  33 static vector unsigned char rotate7 = {5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5};
  34 static vector unsigned char rotate8 = {7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
  35
  36 static vector unsigned char permute_128(vector unsigned char input)
  37 {
  38   vector unsigned char result, new_bit;
  39
  40   /* and now the code */
  41   result = vec_vperm(input, input, control1);
  42   result = vec_rl(result, rotate1);
  43
  44   new_bit = vec_vperm(input, input, control2);
  45   new_bit = vec_rl(new_bit, rotate2);
  46   result = vec_sel(result, new_bit, select2);
  47
  48   new_bit = vec_vperm(input, input, control3);
  49   new_bit = vec_rl(new_bit, rotate3);
  50   result = vec_sel(result, new_bit, select3);
  51
  52   new_bit = vec_vperm(input, input, control4);
  53   new_bit = vec_rl(new_bit, rotate4);
  54   result = vec_sel(result, new_bit, select4);
  55
  56   new_bit = vec_vperm(input, input, control5);
  57   new_bit = vec_rl(new_bit, rotate5);
  58   result = vec_sel(result, new_bit, select5);
  59
  60   new_bit = vec_vperm(input, input, control6);
  61   new_bit = vec_rl(new_bit, rotate6);
  62   result = vec_sel(result, new_bit, select6);
  63
  64   new_bit = vec_vperm(input, input, control7);
  65   new_bit = vec_rl(new_bit, rotate7);
  66   result = vec_sel(result, new_bit, select7);
  67
  68   new_bit = vec_vperm(input, input, control8);
  69   new_bit = vec_rl(new_bit, rotate8);
  70   result = vec_sel(result, new_bit, select8);
  71
  72   return result;
  73 }
  74
  75 int main()
  76 {
  77   vector unsigned char input
  78     = {0,1,2,4,8,16,32,64,128,0,1,2,4,8,16,32};
  79   vector unsigned char result = permute_128(input);
  80   return 0;
  81 }
  82