gcc/testsuite/gcc.dg/vect/pr78005.c

   1 /* { dg-require-effective-target vect_int } */
   2 #include "tree-vect.h"
   3
   4 #define N 20
   5 int u[N] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
   6 int z[N] = {-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,  10, 11, 12, 13, 14, 15, 16, 17, 18};
   7 int res4[N] = {0, 1, 8, 3, 22, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
   8 int res5[N] = {0, 1, 8, 3, 22, 5, 36, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
   9 int res6[N] = {0, 1, 8, 3, 22, 5, 36, 7, 50, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
  10 int res7[N] = {0, 1, 8, 3, 22, 5, 36, 7, 50, 9, 64, 11, 12, 13, 14, 15, 16, 17, 18, 19};
  11 int res8[N] = {0, 1, 8, 3, 22, 5, 36, 7, 50, 9, 64, 11, 78, 13, 14, 15, 16, 17, 18, 19};
  12 int res9[N] = {0, 1, 8, 3, 22, 5, 36, 7, 50, 9, 64, 11, 78, 13, 92, 15, 16, 17, 18, 19};
  13 int res10[N] = {0, 1, 8, 3, 22, 5, 36, 7, 50, 9, 64, 11, 78, 13, 92, 15, 106, 17, 18, 19};
  14
  15 __attribute__ ((noinline)) void
  16 foo (int n, int d)
  17 {
  18   int i;
  19   for (i = 2; i < n; i++)
  20     u[2*i-2] = u[2*i-2] + d * (z[i-1] + z[i] + z[i-1] + z[i] + z[i-1] + z[i]);
  21 }
  22
  23 #define check_u(x)              \
  24   foo (x, 2);                   \
  25   _Pragma("GCC novector")       \
  26   for (i = 0; i < N; i++)       \
  27     {                           \
  28       if (u[i] != res##x[i])    \
  29         abort ();               \
  30       u[i] = i;                 \
  31     }
  32
  33 int main(void)
  34 {
  35   int i;
  36
  37   check_vect ();
  38
  39   /* Need to check for all possible vector factors.  */
  40   check_u(4);
  41   check_u(5);
  42   check_u(6);
  43   check_u(7);
  44   check_u(8);
  45   check_u(9);
  46   check_u(10);
  47
  48   return 0;
  49 }