gcc/testsuite/gcc.dg/vect/bb-slp-20.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 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   if (x > y)
  19     x = x + y;
  20   else
  21     y = x;
  22
  23   /* Two SLP instances in the basic block.  */
  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   b[2] = -a2;
  32   b[3] = -a3;
  33
  34   out[0] = a0 * x;
  35   out[1] = a1 * y;
  36   out[2] = a2 * x;
  37   out[3] = a3 * y;
  38
  39   if (x)
  40     __asm__ volatile ("" : : : "memory");
  41
  42   /* Check results.  */
  43   if (out[0] != (in[0] + 23) * x
  44       || out[1] != (in[1] + 142) * y
  45       || out[2] != (in[2] + 2) * x
  46       || out[3] != (in[3] + 31) * y
  47       || b[0] != -(in[0] + 23)
  48       || b[1] != -(in[1] + 142)
  49       || b[2] != -(in[2] + 2)
  50       || b[3] != -(in[3] + 31))
  51
  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" { target vect_int_mult } } } */
  67 /* { dg-final { scan-tree-dump-times "optimized: basic block" 2 "slp2" { target vect_int_mult } } } */
  68 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "slp2" { target vect_int_mult } } } */
  69