gcc/testsuite/gcc.dg/vect/bb-slp-11.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-require-effective-target vect_pack_trunc } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 16
   8
   9 unsigned int out[N];
  10 unsigned int in[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  11
  12 __attribute__ ((noinline)) int
  13 main1 (unsigned int x, unsigned int y)
  14 {
  15   int i;
  16   unsigned int *pin = &in[0];
  17   unsigned int *pout = &out[0];
  18   short a0, a1, a2, a3;
  19
  20   a0 = *pin++ + 23;
  21   a1 = *pin++ + 142;
  22   a2 = *pin++ + 2;
  23   a3 = *pin++ + 31;
  24
  25   *pout++ = a0 * x;
  26   *pout++ = a1 * y;
  27   *pout++ = a2 * x;
  28   *pout++ = a3 * y;
  29
  30   if (x)
  31     __asm__ volatile ("" : : : "memory");
  32
  33   /* Check results.  */
  34   if (out[0] != (in[0] + 23) * x
  35       || out[1] != (in[1] + 142) * y
  36       || out[2] != (in[2] + 2) * x
  37       || out[3] != (in[3] + 31) * y)
  38     abort();
  39
  40   return 0;
  41 }
  42
  43 int main (void)
  44 {
  45   check_vect ();
  46
  47   main1 (2, 3);
  48
  49   return 0;
  50 }
  51
  52 /* { dg-final { scan-tree-dump-times "basic block vectorized" 1 "slp2" { target vect64 } } } */
  53