gcc/testsuite/gcc.dg/vect/bb-slp-22.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 b[N];
   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   if (x > y)
  24     {
  25       b[0] = a0;
  26       b[1] = a1;
  27       b[2] = a2;
  28       b[3] = a3;
  29     }
  30   else
  31     {
  32       out[0] = a0 * (x + 1);
  33       out[1] = a1 * (y + 1);
  34       out[2] = a2 * (x + 1);
  35       out[3] = a3 * (y + 1);
  36     }
  37
  38   if (x)
  39     __asm__ volatile ("" : : : "memory");
  40
  41   /* Check results.  */
  42   if ((x <= y
  43        && (out[0] != (in[0] + 23) * (x + 1)
  44            || out[1] != (in[1] + 142) * (y + 1)
  45            || out[2] != (in[2] + 2) * (x + 1)
  46            || out[3] != (in[3] + 31) * (y + 1)))
  47        || (x > y
  48            && (b[0] != (in[0] + 23)
  49                || b[1] != (in[1] + 142)
  50                || b[2] != (in[2] + 2)
  51                || b[3] != (in[3] + 31))))
  52     abort();
  53
  54   return 0;
  55 }
  56
  57 int main (void)
  58 {
  59   check_vect ();
  60
  61   main1 (2, 3);
  62
  63   return 0;
  64 }
  65
  66 /* { dg-final { scan-tree-dump-times "Basic block will be vectorized using SLP" 1 "slp2" } } */
  67 /* { dg-final { scan-tree-dump "vectorizing SLP node starting from: _\[0-9\]+ = _\[0-9\]+ \\\* a0" "slp2" { target vect_int_mult  } } } */