gcc/testsuite/gcc.dg/vect/bb-slp-17.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 b[N];
  10 unsigned int out[N];
  11 unsigned int in[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  12
  13 __attribute__ ((noinline)) int
  14 main1 (unsigned int x, unsigned int y)
  15 {
  16   int i;
  17   unsigned int a0, a1, a2, a3;
  18
  19   if (x > y)
  20     x = x + y;
  21   else
  22     y = x;
  23
  24   a0 = in[0] + 23;
  25   a1 = in[1] + 142;
  26   a2 = in[2] + 2;
  27   a3 = in[3] + 31;
  28
  29   b[0] = a0;
  30   b[1] = a1;
  31
  32   out[0] = a0 * x;
  33   out[1] = a1 * y;
  34   out[2] = a2 * x;
  35   out[3] = a3 * y;
  36
  37   if (x)
  38     __asm__ volatile ("" : : : "memory");
  39
  40   /* Check results.  */
  41   if (out[0] != (in[0] + 23) * x
  42       || out[1] != (in[1] + 142) * y
  43       || out[2] != (in[2] + 2) * x
  44       || out[3] != (in[3] + 31) * y
  45       || b[0] != in[0] + 23
  46       || b[1] != in[1] + 142)
  47     abort();
  48
  49   return 0;
  50 }
  51
  52 int main (void)
  53 {
  54   check_vect ();
  55
  56   main1 (2, 3);
  57
  58   return 0;
  59 }
  60
  61 /* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 1 "slp" { target vect_int_mult } } } */
  62 /* { dg-final { cleanup-tree-dump "slp" } } */
  63