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

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   7 struct S
   8 {
   9   unsigned short a;
  10   unsigned short b;
  11 };
  12
  13 struct S result[N] = {12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18,
  14                       18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24,
  15                       24, 25, 25, 26, 26, 27, 27, 28};
  16 struct S X[N] = {10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16,
  17                  16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  18                  23, 23, 24, 24, 25, 25};
  19 struct S Y[N] = {};
  20
  21 __attribute__ ((noinline)) void
  22 foo (struct S * in, struct S * out)
  23 {
  24   int i;
  25
  26   for (i = 0; i < N; i++)
  27     {
  28       out[i].a = in[i].a + 2;
  29       out[i].b = in[i].b + 3;
  30     }
  31 }
  32
  33 int
  34 main (void)
  35 {
  36   int i;
  37
  38   check_vect ();
  39
  40   foo (X, Y);
  41
  42   /* check results:  */
  43 #pragma GCC novector
  44   for (i = 0; i < N; i++)
  45     {
  46       if (Y[i].a != result[i].a)
  47         abort ();
  48
  49       if (Y[i].b != result[i].b)
  50         abort ();
  51
  52     }
  53   return 0;
  54 }
  55
  56 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */