gcc/testsuite/gcc.dg/vect/slp-perm-3.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define M00 100
   7 #define M10 216
   8 #define M20 23
   9 #define M30 237
  10 #define M01 1322
  11 #define M11 13
  12 #define M21 27271
  13 #define M31 2280
  14 #define M02 74
  15 #define M12 191
  16 #define M22 500
  17 #define M32 111
  18 #define M03 134
  19 #define M13 117
  20 #define M23 11
  21 #define M33 771
  22
  23 #define N 16
  24
  25 void foo (unsigned int *__restrict__ pInput, unsigned int *__restrict__ pOutput)
  26 {
  27   unsigned int i, a, b, c, d;
  28
  29   for (i = 0; i < N / 4; i++)
  30     {
  31        a = *pInput++;
  32        b = *pInput++;
  33        c = *pInput++;
  34        d = *pInput++;
  35
  36        *pOutput++ = M00 * a + M01 * b + M02 * c + M03 * d;
  37        *pOutput++ = M10 * a + M11 * b + M12 * c + M13 * d;
  38        *pOutput++ = M20 * a + M21 * b + M22 * c + M23 * d;
  39        *pOutput++ = M30 * a + M31 * b + M32 * c + M33 * d;
  40     }
  41 }
  42
  43 int main (int argc, const char* argv[])
  44 {
  45   unsigned int input[N], output[N], i;
  46   unsigned int check_results[N] = {1872, 746, 28304, 4815, 8392, 2894, 139524, 18411, 14912, 5042, 250744, 32007, 21432, 7190, 361964, 45603};
  47
  48   check_vect ();
  49
  50   for (i = 0; i < N; i++)
  51     {
  52       input[i] = i%256;
  53       output[i] = 0;
  54       __asm__ volatile ("");
  55     }
  56
  57   foo (input, output);
  58
  59   for (i = 0; i < N; i++)
  60     {
  61       if (output[i] != check_results[i])
  62         abort ();
  63       __asm__ volatile ("");
  64     }
  65
  66   return 0;
  67 }
  68
  69 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target vect_perm } } } */
  70 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target vect_perm } } } */
  71 /* { dg-final { cleanup-tree-dump "vect" } } */
  72
  73