gcc/testsuite/gcc.dg/vect/vect-double-reduc-7.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define K 32
   7
   8 int in[2*K][K] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
   9 int out[K];
  10 int check_result[K] = {63,63,191,191,127,127,191,191,127,127,191,191,127,127,191,191,127,127,191,191,127,127,191,191,127,127,191,191,127,127,191,191};
  11
  12 __attribute__ ((noinline)) void
  13 foo ()
  14 {
  15   int res_or, res_and, res_xor, i, j, k;
  16
  17   for (k = 0; k < K; k++)
  18     {
  19       res_or = 0;
  20       for (j = 0; j < K; j++)
  21         for (i = 0; i < K; i++)
  22           res_or = res_or | in[i+k][j];
  23
  24       res_and = 1;
  25       for (j = 0; j < K; j++)
  26         for (i = 0; i < K; i++)
  27           res_and = res_and & in[i+k][j];
  28
  29       res_xor = 0;
  30       for (j = 0; j < K; j++)
  31         for (i = 0; i < K; i++)
  32           res_xor = res_xor ^ in[i+k][j];
  33
  34       out[k] = res_or + res_and + res_xor;
  35     }
  36 }
  37
  38 int main ()
  39 {
  40   int i, j, k;
  41
  42   check_vect ();
  43
  44   for  (j = 0; j < K; j++)
  45     {
  46       for (i = 0; i < 2*K; i++)
  47         in[i][j] = i+j;
  48
  49       for (i = 0; i < K; i++)
  50         out[i] = i+j;
  51     }
  52
  53   foo();
  54
  55 #pragma GCC novector
  56   for (k = 0; k < K; k++)
  57     if (out[k] != check_result[k])
  58       abort ();
  59
  60   return 0;
  61 }
  62
  63 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 3 "vect" } } */
  64