gcc/testsuite/gcc.dg/vect/slp-41.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-require-effective-target vect_pack_trunc } */
   3 /* { dg-require-effective-target vect_unpack } */
   4 /* { dg-require-effective-target vect_hw_misalign } */
   5
   6 #include "tree-vect.h"
   7
   8 void __attribute__((noinline,noclone))
   9 testi (int *p, short *q, int stride, int n)
  10 {
  11   int i;
  12   for (i = 0; i < n; ++i)
  13     {
  14       q[i*4+0] = p[i*stride+0];
  15       q[i*4+1] = p[i*stride+1];
  16       q[i*4+2] = p[i*stride+2];
  17       q[i*4+3] = p[i*stride+3];
  18     }
  19 }
  20
  21 void __attribute__((noinline,noclone))
  22 testi2 (int *q, short *p, int stride, int n)
  23 {
  24   int i;
  25   for (i = 0; i < n; ++i)
  26     {
  27       q[i*4+0] = p[i*stride+0];
  28       q[i*4+1] = p[i*stride+1];
  29       q[i*4+2] = p[i*stride+2];
  30       q[i*4+3] = p[i*stride+3];
  31     }
  32 }
  33
  34 int ia[256];
  35 short sa[256];
  36
  37 extern void abort (void);
  38
  39 int main()
  40 {
  41   int i;
  42
  43   check_vect ();
  44
  45   for (i = 0; i < 256; ++i)
  46     {
  47       ia[i] = sa[i] = i;
  48        __asm__ volatile ("");
  49     }
  50   testi (ia, sa, 8, 32);
  51 #pragma GCC novector
  52   for (i = 0; i < 128; ++i)
  53     if (sa[i] != ia[(i / 4) * 8 + i % 4])
  54       abort ();
  55
  56   for (i = 0; i < 256; ++i)
  57     {
  58       ia[i] = sa[i] = i;
  59        __asm__ volatile ("");
  60     }
  61   testi2 (ia, sa, 8, 32);
  62 #pragma GCC novector
  63   for (i = 0; i < 128; ++i)
  64     if (ia[i] != sa[(i / 4) * 8 + i % 4])
  65       abort ();
  66
  67   return 0;
  68 }
  69
  70 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" } } */