gcc/testsuite/gcc.dg/vect/bb-slp-15.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   if (x > y)
  19     x = x + y;
  20   else
  21     y = x;
  22
  23   a0 = in[0] + 23;
  24   a1 = in[1] + 142;
  25   a2 = in[2] + 2;
  26   a3 = in[3] + 31;
  27
  28   out[0] = a0 * x;
  29   out[1] = a1 * y;
  30   out[2] = a2 * x;
  31   out[3] = a3 * y;
  32
  33   if (x)
  34     __asm__ volatile ("" : : : "memory");
  35
  36   /* Check results.  */
  37   if (out[0] != (in[0] + 23) * x
  38       || out[1] != (in[1] + 142) * y
  39       || out[2] != (in[2] + 2) * x
  40       || out[3] != (in[3] + 31) * y)
  41     abort();
  42
  43   return 0;
  44 }
  45
  46 int main (void)
  47 {
  48   check_vect ();
  49
  50   main1 (2, 3);
  51
  52   return 0;
  53 }
  54
  55 /* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 1 "slp" { target vect_int_mult } } } */
  56 /* { dg-final { cleanup-tree-dump "slp" } } */
  57