gcc/testsuite/gcc.dg/vect/bb-slp-34.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include "tree-vect.h"
   4
   5 extern void abort (void);
   6
   7 int a[8], b[8];
   8
   9 void __attribute__((noinline,noclone))
  10 foo(void)
  11 {
  12   a[0] = b[3];
  13   a[1] = b[2];
  14   a[2] = b[1];
  15   a[3] = b[0];
  16   a[4] = b[2];
  17   a[5] = b[3];
  18   a[6] = b[4];
  19   a[7] = b[5];
  20 }
  21
  22 int main()
  23 {
  24   int i;
  25   check_vect ();
  26   for (i = 0; i < 8; ++i)
  27     b[i] = i;
  28   foo ();
  29   if (a[0] != 3 || a[1] != 2 || a[2] != 1 || a[3] != 0
  30       || a[4] != 2 || a[5] != 3 || a[6] != 4 || a[7] != 5)
  31     abort ();
  32   return 0;
  33 }
  34
  35 /* { dg-final { scan-tree-dump "basic block vectorized" "slp2" { target vect_perm } } } */
  36 /* { dg-final { cleanup-tree-dump "slp1" } } */
  37 /* { dg-final { cleanup-tree-dump "slp2" } } */