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

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include <stdio.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 a0, a1, a2, a3;
  17
  18   a0 = in[0] + 23;
  19   a1 = in[1] + 142;
  20   a2 = in[2] + 2;
  21   a3 = in[3] + 31;
  22
  23   out[0] = a0 * x;
  24   out[1] = a1 * y;
  25   out[2] = a2 * x;
  26   out[3] = a3 * y;
  27
  28   if (x)
  29     __asm__ volatile ("" : : : "memory");
  30
  31   /* Check results.  */
  32   if (out[0] != a0 * x
  33       || out[1] != a1 * y
  34       || out[2] != a2 * x
  35       || out[3] != a3 * y)
  36     abort();
  37
  38   return 0;
  39 }
  40
  41 int main (void)
  42 {
  43   check_vect ();
  44
  45   main1 (2, 3);
  46
  47   return 0;
  48 }
  49
  50 /* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 1 "slp" { target vect_int_mult } } } */
  51 /* { dg-final { cleanup-tree-dump "slp" } } */
  52