gcc/testsuite/gcc.dg/vect/bb-slp-18.c

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