gcc/testsuite/gcc.dg/vect/bb-slp-16.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* The SLP vectorization happens as part of the if-converted loop body.  */
   3 /* { dg-additional-options "-fdump-tree-vect-details" } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 #define N 32
   9
  10 unsigned int out[N*8];
  11 unsigned int in[N*8] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
  12 unsigned int arr[N] = {0,1,2,3,4,5,6,7};
  13
  14 __attribute__ ((noinline)) int
  15 main1 (int dummy)
  16 {
  17   int i;
  18   unsigned int *pin = &in[0];
  19   unsigned int *pout = &out[0];
  20   unsigned int a = 0;
  21
  22   for (i = 0; i < N; i++)
  23     {
  24       *pout++ = *pin++ + a;
  25       *pout++ = *pin++ + a;
  26       *pout++ = *pin++ + a;
  27       *pout++ = *pin++ + a;
  28       *pout++ = *pin++ + a;
  29       *pout++ = *pin++ + a;
  30       *pout++ = *pin++ + a;
  31       *pout++ = *pin++ + a;
  32       if (arr[i] = i)
  33         a = i;
  34       else
  35         a = 2;
  36     }
  37
  38   a = 0;
  39   /* check results: */
  40 #pragma GCC novector
  41   for (i = 0; i < N; i++)
  42     {
  43       if (out[i*8] !=  in[i*8] + a
  44          || out[i*8 + 1] != in[i*8 + 1] + a
  45          || out[i*8 + 2] != in[i*8 + 2] + a
  46          || out[i*8 + 3] != in[i*8 + 3] + a
  47          || out[i*8 + 4] != in[i*8 + 4] + a
  48          || out[i*8 + 5] != in[i*8 + 5] + a
  49          || out[i*8 + 6] != in[i*8 + 6] + a
  50          || out[i*8 + 7] != in[i*8 + 7] + a)
  51         abort ();
  52
  53       if (arr[i] = i)
  54         a = i;
  55       else
  56         a = 2;
  57     }
  58
  59   return 0;
  60 }
  61
  62 int main (void)
  63 {
  64   check_vect ();
  65
  66   main1 (33);
  67
  68   return 0;
  69 }
  70
  71 /* { dg-final { scan-tree-dump-times "optimized: basic block" 1 "vect" } } */