gcc/testsuite/gcc.dg/vect/slp-36.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target vect_int } */
   3 /* { dg-require-effective-target vect_shift } */
   4
   5 #define N 32
   6
   7 /* All the loops are vectorizable on platforms with vector shift argument.  */
   8
   9 void
  10 test_1 (void)
  11 {
  12   static unsigned int bm[N];
  13   static unsigned int cm[N];
  14   int j;
  15
  16   /* Vectorizable on platforms with scalar shift argument.  */
  17   for (j = 0; j < N/2; j++)
  18    {
  19     bm[2*j] <<= 8;
  20     bm[2*j+1] <<= 8;
  21    }
  22
  23   /* Not vectorizable on platforms with scalar shift argument.  */
  24   for (j = 0; j < N/2; j++)
  25    {
  26     cm[2*j] <<= 8;
  27     cm[2*j+1] <<= 7;
  28    }
  29 }
  30
  31 void
  32 test_2 (int a, int b)
  33 {
  34   static unsigned int bm[N];
  35   static unsigned int cm[N];
  36   int j;
  37
  38   /* Vectorizable on platforms with scalar shift argument.  */
  39   for (j = 0; j < N/2; j++)
  40    {
  41     bm[2*j] <<= a;
  42     bm[2*j+1] <<= a;
  43    }
  44
  45   /* Not vectorizable on platforms with scalar shift argument.  */
  46   for (j = 0; j < N/2; j++)
  47    {
  48     cm[2*j] <<= a;
  49     cm[2*j+1] <<= b;
  50    }
  51 }
  52
  53 void
  54 test_3 (void)
  55 {
  56  static unsigned int bm[N];
  57  int am[N];
  58  int j;
  59
  60  /* Not vectorizable on platforms with scalar shift argument.  */
  61  for (j = 0; j < N/2; j++)
  62    {
  63     bm[2*j] <<= am[j];
  64     bm[2*j+1] <<= am[j];
  65    }
  66
  67  /* Not vectorizable on platforms with scalar shift argument.  */
  68  for (j = 0; j < N/2; j++)
  69    {
  70     bm[2*j] <<= am[2*j];
  71     bm[2*j+1] <<= am[2*j+1];
  72    }
  73
  74 }
  75
  76 /* { dg-final { cleanup-tree-dump "vect" } } */