gcc/testsuite/gcc.dg/vect/bb-slp-40.c

   1 /* { dg-do compile } */
   2 /* { dg-additional-options "-fvect-cost-model=dynamic" } */
   3 /* { dg-require-effective-target vect_char_add } */
   4
   5 char g_d[1024], g_s1[1024], g_s2[1024];
   6 void foo(void)
   7 {
   8     char *d = g_d, *s1 = g_s1, *s2 = g_s2;
   9
  10     for ( int y = 0; y < 128; y++ )
  11     {
  12       d[0 ] = s1[0 ] + s2[0 ];
  13       d[1 ] = s1[1 ] + s2[1 ];
  14       d[2 ] = s1[2 ] + s2[2 ];
  15       d[3 ] = s1[3 ] + s2[3 ];
  16       d[4 ] = s1[4 ] + s2[4 ];
  17       d[5 ] = s1[5 ] + s2[5 ];
  18       d[6 ] = s1[6 ] + s2[6 ];
  19       d[7 ] = s1[7 ] + s2[7 ];
  20       d[8 ] = s1[8 ] + s2[8 ];
  21       d[9 ] = s1[9 ] + s2[9 ];
  22       d[10] = s1[10] + s2[10];
  23       d[11] = s1[11] + s2[11];
  24       d[12] = s1[12] + s2[12];
  25       d[13] = s1[13] + s2[13];
  26       d[14] = s1[14] + s2[14];
  27       d[15] = s1[15] + s2[15];
  28       d += 16;
  29     }
  30 }
  31
  32 /* See that we vectorize an SLP instance.  */
  33 /* { dg-final { scan-tree-dump "Analyzing vectorizable constructor" "slp1" } } */
  34 /* { dg-final { scan-tree-dump "vectorizing stmts using SLP" "slp1" } } */