gcc/testsuite/gcc.dg/vect/slp-22.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], out3[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       out3[i*4] = b2;
  36       out3[i*4 + 1] = b1;
  37       out3[i*4 + 2] = b4;
  38       out3[i*4 + 3] = b5;
  39     }
  40
  41   /* check results:  */
  42   for (i = 0; i < N; i++)
  43     {
  44       if (out[i*4] != b0
  45          || out[i*4 + 1] != b1
  46          || out[i*4 + 2] != b2
  47          || out[i*4 + 3] != b3)
  48         abort ();
  49
  50
  51       if (out2[i*4] != b0
  52          || out2[i*4 + 1] != b1
  53          || out2[i*4 + 2] != b4
  54          || out2[i*4 + 3] != b5)
  55         abort ();
  56
  57       if (out3[i*4] != b2
  58          || out3[i*4 + 1] != b1
  59          || out3[i*4 + 2] != b4
  60          || out3[i*4 + 3] != b5)
  61         abort ();
  62     }
  63
  64   for (i = 0; i < N; i++)
  65     {
  66       b0 = a0 + 8;
  67       b1 = a1 + 7;
  68       b2 = a2 + 6;
  69       b3 = a3 + 5;
  70       b4 = a4 + 4;
  71       b5 = a5 + 3;
  72       b6 = a6 + 2;
  73       b7 = a7 + 1;
  74       b8 = a8 + 9;
  75
  76       out[i*4] = b0;
  77       out[i*4 + 1] = b1;
  78       out[i*4 + 2] = b2;
  79       out[i*4 + 3] = b3;
  80
  81       out2[i*8] = b0;
  82       out2[i*8 + 1] = b1;
  83       out2[i*8 + 2] = b4;
  84       out2[i*8 + 3] = b5;
  85       out2[i*8 + 4] = b6;
  86       out2[i*8 + 5] = b2;
  87       out2[i*8 + 6] = b7;
  88       out2[i*8 + 7] = b8;
  89
  90       out3[2*i + 1] = a0;
  91       out3[2*i] = b8;
  92     }
  93
  94   /* check results:  */
  95   for (i = 0; i < N; i++)
  96     {
  97       if (out[i*4] != b0
  98          || out[i*4 + 1] != b1
  99          || out[i*4 + 2] != b2
 100          || out[i*4 + 3] != b3)
 101         abort ();
 102
 103       if (out2[i*8] != b0
 104          || out2[i*8 + 1] != b1
 105          || out2[i*8 + 2] != b4
 106          || out2[i*8 + 3] != b5
 107          || out2[i*8 + 4] != b6
 108          || out2[i*8 + 5] != b2
 109          || out2[i*8 + 6] != b7
 110          || out2[i*8 + 7] != b8)
 111         abort ();
 112
 113       if (out3[2*i] != b8
 114           || out3[2*i+1] != a0)
 115         abort();
 116     }
 117
 118
 119   return 0;
 120 }
 121
 122 int main (void)
 123 {
 124   check_vect ();
 125
 126   main1 (8,7,6,5,4,3,2,1,0);
 127
 128   return 0;
 129 }
 130
 131 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect"  } } */
 132 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 6 "vect"  } } */
 133