gcc/testsuite/gcc.dg/vect/bb-slp-27.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define A 3
   7 #define N 16
   8
   9 short src[N], dst[N];
  10
  11 void foo (int a)
  12 {
  13   dst[0] += a*src[0];
  14   dst[1] += a*src[1];
  15   dst[2] += a*src[2];
  16   dst[3] += a*src[3];
  17   dst[4] += a*src[4];
  18   dst[5] += a*src[5];
  19   dst[6] += a*src[6];
  20   dst[7] += a*src[7];
  21 }
  22
  23
  24 int main (void)
  25 {
  26   int i;
  27
  28   check_vect ();
  29
  30   for (i = 0; i < N; i++)
  31     {
  32       dst[i] = 0;
  33       src[i] = i;
  34     }
  35
  36   foo (A);
  37
  38 #pragma GCC novector
  39   for (i = 0; i < 8; i++)
  40     {
  41       if (dst[i] != A * i)
  42         abort ();
  43     }
  44
  45   return 0;
  46 }
  47
  48 /* { dg-final { scan-tree-dump-times "optimized: basic block" 1 "slp2" { target { vect_int_mult && { vect_unpack && vect_pack_trunc } } } } } */
  49