gcc/testsuite/gcc.dg/vect/O3-pr39675-2.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target vect_int } */
   3
   4 #define N 128
   5
   6 int out[N*4], out2[N], in[N*4];
   7
   8 void
   9 foo ()
  10 {
  11   int i, a0, a1, a2, a3;
  12
  13   for (i = 0; i < N; i++)
  14     {
  15       a0 = in[i*4];
  16       a1 = in[i*4 + 1];
  17       a2 = in[i*4 + 2];
  18       a3 = in[i*4 + 3];
  19
  20       out[i*4] = a0;
  21       out[i*4 + 1] = a1;
  22       out[i*4 + 2] = a2;
  23       out[i*4 + 3] = a3;
  24
  25       out2[i] = a0;
  26     }
  27 }
  28
  29 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target vect_strided4 } } } */
  30 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target vect_strided4 } } } */
  31