gcc/testsuite/gcc.dg/vect/slp-20.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 int
   9 main1 (unsigned short a0, unsigned short a1, unsigned short a2,
  10        unsigned short a3, unsigned short a4, unsigned short a5,
  11        unsigned short a6, unsigned short a7, unsigned short a8)
  12 {
  13   int i;
  14   unsigned short out[N*8], out2[N*8], b0, b1, b2, b3, b4, b5, b6, b7, b8;
  15
  16   for (i = 0; i < N; i++)
  17     {
  18       b0 = a0 + 8;
  19       b1 = a1 + 7;
  20       b2 = a2 + 6;
  21       b3 = a3 + 5;
  22       b4 = a4 + 4;
  23       b5 = a5 + 3;
  24
  25       out[i*4] = b0;
  26       out[i*4 + 1] = b1;
  27       out[i*4 + 2] = b2;
  28       out[i*4 + 3] = b3;
  29
  30       out2[i*4] = b0;
  31       out2[i*4 + 1] = b1;
  32       out2[i*4 + 2] = b4;
  33       out2[i*4 + 3] = b5;
  34     }
  35
  36   /* check results:  */
  37   for (i = 0; i < N; i++)
  38     {
  39       if (out[i*4] != b0
  40          || out[i*4 + 1] != b1
  41          || out[i*4 + 2] != b2
  42          || out[i*4 + 3] != b3)
  43         abort ();
  44
  45       if (out2[i*4] != b0
  46          || out2[i*4 + 1] != b1
  47          || out2[i*4 + 2] != b4
  48          || out2[i*4 + 3] != b5)
  49         abort ();
  50     }
  51
  52   for (i = 0; i < N; i++)
  53     {
  54       b0 = a0 + 8;
  55       b1 = a1 + 7;
  56       b2 = a2 + 6;
  57       b3 = a3 + 5;
  58       b4 = a4 + 4;
  59       b5 = a5 + 3;
  60       b6 = a6 + 2;
  61       b7 = a7 + 1;
  62       b8 = a8 + 9;
  63
  64       out[i*4] = b0;
  65       out[i*4 + 1] = b1;
  66       out[i*4 + 2] = b2;
  67       out[i*4 + 3] = b3;
  68
  69       out2[i*8] = b0;
  70       out2[i*8 + 1] = b1;
  71       out2[i*8 + 2] = b4;
  72       out2[i*8 + 3] = b5;
  73       out2[i*8 + 4] = b6;
  74       out2[i*8 + 5] = b2;
  75       out2[i*8 + 6] = b7;
  76       out2[i*8 + 7] = b8;
  77     }
  78
  79   /* check results:  */
  80   for (i = 0; i < N; i++)
  81     {
  82       if (out[i*4] != b0
  83          || out[i*4 + 1] != b1
  84          || out[i*4 + 2] != b2
  85          || out[i*4 + 3] != b3)
  86         abort ();
  87
  88       if (out2[i*8] != b0
  89          || out2[i*8 + 1] != b1
  90          || out2[i*8 + 2] != b4
  91          || out2[i*8 + 3] != b5
  92          || out2[i*8 + 4] != b6
  93          || out2[i*8 + 5] != b2
  94          || out2[i*8 + 6] != b7
  95          || out2[i*8 + 7] != b8)
  96         abort ();
  97     }
  98
  99
 100   return 0;
 101 }
 102
 103 int main (void)
 104 {
 105   check_vect ();
 106
 107   main1 (8,7,6,5,4,3,2,1,0);
 108
 109   return 0;
 110 }
 111
 112 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect"  } } */
 113 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect"  } } */
 114 /* { dg-final { cleanup-tree-dump "vect" } } */
 115