gcc/testsuite/gcc.dg/vect/no-tree-reassoc-bb-slp-12.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 out[N];
   9 unsigned int in1[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  10 unsigned int in2[N] = {10,11,12,13,14,15,16,17,18,19,110,111,112,113,114,115};
  11
  12 __attribute__ ((noinline)) int
  13 main1 (unsigned int x, unsigned int y)
  14 {
  15   int i;
  16   unsigned int *pin1 = &in1[0];
  17   unsigned int *pin2 = &in2[0];
  18   unsigned int *pout = &out[0];
  19   unsigned int a0, a1, a2, a3;
  20
  21   a0 = *pin2++ - *pin1++ + 23;
  22   a1 = *pin2++ - *pin1++ + 142;
  23   a2 = *pin2++ - *pin1++ + 2;
  24   a3 = *pin2++ - *pin1++ + 31;
  25
  26   *pout++ = a0 * x;
  27   *pout++ = a1 * y;
  28   *pout++ = a2 * x;
  29   *pout++ = a3 * y;
  30
  31   /* Check results.  */
  32   if (out[0] != (in2[0] - in1[0] + 23) * x
  33       || out[1] != (in2[1] - in1[1] + 142) * y
  34       || out[2] != (in2[2] - in1[2] + 2) * x
  35       || out[3] != (in2[3] - in1[3] + 31) * 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" 1 "slp2" { target vect_int_mult } } } */
  51