gcc/testsuite/gcc.dg/vect/bb-slp-28.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define A 300
   7 #define N 16
   8
   9 char src[N];
  10 short dst[N];
  11 short src1[N], dst1[N];
  12
  13 void foo (int a)
  14 {
  15   dst[0] = (short) (a * (int) src[0]);
  16   dst[1] = (short) (a * (int) src[1]);
  17   dst[2] = (short) (a * (int) src[2]);
  18   dst[3] = (short) (a * (int) src[3]);
  19   dst[4] = (short) (a * (int) src[4]);
  20   dst[5] = (short) (a * (int) src[5]);
  21   dst[6] = (short) (a * (int) src[6]);
  22   dst[7] = (short) (a * (int) src[7]);
  23   dst[8] = (short) (a * (int) src[8]);
  24   dst[9] = (short) (a * (int) src[9]);
  25   dst[10] = (short) (a * (int) src[10]);
  26   dst[11] = (short) (a * (int) src[11]);
  27   dst[12] = (short) (a * (int) src[12]);
  28   dst[13] = (short) (a * (int) src[13]);
  29   dst[14] = (short) (a * (int) src[14]);
  30   dst[15] = (short) (a * (int) src[15]);
  31
  32   dst1[0] += src1[0];
  33   dst1[1] += src1[1];
  34   dst1[2] += src1[2];
  35   dst1[3] += src1[3];
  36   dst1[4] += src1[4];
  37   dst1[5] += src1[5];
  38   dst1[6] += src1[6];
  39   dst1[7] += src1[7];
  40 }
  41
  42
  43 int main (void)
  44 {
  45   int i;
  46
  47   check_vect ();
  48
  49   for (i = 0; i < N; i++)
  50     {
  51       dst[i] = 2;
  52       dst1[i] = 0;
  53       src[i] = i;
  54       src1[i] = i+2;
  55     }
  56
  57   foo (A);
  58
  59 #pragma GCC novector
  60   for (i = 0; i < N; i++)
  61     {
  62       if (dst[i] != A * i
  63           || (i < N/2 && dst1[i] != i + 2))
  64         abort ();
  65     }
  66
  67   return 0;
  68 }
  69
  70 /* { dg-final { scan-tree-dump-times "optimized: basic block" 2 "slp2" { target { vect_int_mult &&  { vect_pack_trunc && vect_unpack } } } } } */
  71