gcc/testsuite/gcc.dg/vect/bb-slp-21.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   /* Two SLP instances in one basic block.  */
  20   if (x > y)
  21     x = x + y;
  22   else
  23     y = x;
  24
  25   a0 = in[0] + 23;
  26   a1 = in[1] + 142;
  27   a2 = in[2] + 2;
  28   a3 = in[3] + 31;
  29
  30   b[0] = a0;
  31   b[1] = a1;
  32   b[2] = a2;
  33   b[3] = a3;
  34
  35   out[0] = a0 * x;
  36   out[1] = a1 * y;
  37   out[2] = a2 * x;
  38   out[3] = a3 * y;
  39
  40   if (x)
  41     __asm__ volatile ("" : : : "memory");
  42
  43   /* Check results.  */
  44   if (out[0] != (in[0] + 23) * x
  45       || out[1] != (in[1] + 142) * y
  46       || out[2] != (in[2] + 2) * x
  47       || out[3] != (in[3] + 31) * 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
  53     abort();
  54
  55   return 0;
  56 }
  57
  58 int main (void)
  59 {
  60   check_vect ();
  61
  62   main1 (2, 3);
  63
  64   return 0;
  65 }
  66
  67 /* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 1 "slp"  } } */
  68 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "slp" { target { ! {vect_int_mult } } } } } */
  69 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "slp" { target vect_int_mult } } } */
  70 /* { dg-final { cleanup-tree-dump "slp" } } */
  71