gcc/testsuite/gcc.dg/vect/slp-24.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   7 #define DIFF 242
   8
   9 typedef struct {
  10    unsigned char a;
  11    unsigned char b;
  12    unsigned char c;
  13    unsigned char d;
  14 } s;
  15
  16 unsigned char ub[N*2] = {1,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,1,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  17 unsigned char uc[N] = {1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  18
  19 void
  20 main1 (unsigned char x, unsigned char max_result, unsigned char min_result, s *arr)
  21 {
  22   int i;
  23   unsigned char udiff = 2;
  24   unsigned char umax = x;
  25   unsigned char umin = x;
  26   unsigned char ua1[N*2];
  27   s *pIn = arr;
  28   s out[N];
  29
  30   for (i = 0; i < N; i++) {
  31     udiff += (unsigned char)(ub[i] - uc[i]);
  32
  33     ua1[2*i+1] = ub[2*i+1];
  34     ua1[2*i] = ub[2*i];
  35
  36     out[i].d = pIn->d - 1;
  37     out[i].b = pIn->b - 4;
  38     out[i].c = pIn->c - 8;
  39     out[i].a = pIn->a - 3;
  40
  41     pIn++;
  42   }
  43
  44 #pragma GCC novector
  45   for (i = 0; i < N; i++) {
  46     if (ua1[2*i] != ub[2*i]
  47         || ua1[2*i+1] != ub[2*i+1]
  48         || out[i].a != arr[i].a - 3
  49         || out[i].b != arr[i].b - 4
  50         || out[i].c != arr[i].c - 8
  51         || out[i].d != arr[i].d - 1)
  52       abort();
  53   }
  54
  55   /* check results:  */
  56   if (udiff != DIFF)
  57     abort ();
  58 }
  59
  60 int main (void)
  61 {
  62   int i;
  63   s arr[N];
  64
  65   for (i = 0; i < N; i++)
  66     {
  67       arr[i].a = i + 9;
  68       arr[i].b = i * 2 + 10;
  69       arr[i].c = 17;
  70       arr[i].d = i+34;
  71       asm volatile ("" ::: "memory");
  72     }
  73   check_vect ();
  74
  75   main1 (100, 100, 1, arr);
  76   main1 (0, 15, 0, arr);
  77   return 0;
  78 }
  79
  80 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align && ilp32 } } } } */
  81 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 3 "vect" { xfail { vect_no_align && ilp32 } } } } */