gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap2-big-array.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 typedef struct {
   9    unsigned char a;
  10    unsigned char b;
  11    unsigned char c;
  12    unsigned char d;
  13    unsigned char e;
  14    unsigned char f;
  15    unsigned char g;
  16    unsigned char h;
  17 } s;
  18
  19 s check_res[N];
  20
  21 __attribute__ ((noinline)) int
  22 main1 (s *arr)
  23 {
  24   int i;
  25   s *ptr = arr;
  26   s res[N];
  27
  28   for (i = 0; i < N; i++)
  29     {
  30       res[i].c = ptr->b;
  31       res[i].a = ptr->f + ptr->b;
  32       res[i].d = ptr->f - ptr->b;
  33       res[i].b = ptr->f;
  34       res[i].f = ptr->b;
  35       res[i].e = ptr->f - ptr->b;
  36       res[i].h = ptr->f;
  37       res[i].g = ptr->f - ptr->b;
  38       ptr++;
  39     }
  40
  41   /* check results:  */
  42   for (i = 0; i < N; i++)
  43     {
  44       if (res[i].a != check_res[i].a
  45           || res[i].b != check_res[i].b
  46           || res[i].c != check_res[i].c
  47           || res[i].d != check_res[i].d
  48           || res[i].e != check_res[i].e
  49           || res[i].f != check_res[i].f
  50           || res[i].g != check_res[i].g
  51           || res[i].h != check_res[i].h)
  52           abort ();
  53    }
  54 }
  55
  56
  57 int main (void)
  58 {
  59   int i;
  60   s arr[N];
  61
  62   check_vect ();
  63
  64   for (i = 0; i < N; i++)
  65     {
  66       arr[i].a = i;
  67       arr[i].b = i * 2;
  68       arr[i].c = 17;
  69       arr[i].d = i+34;
  70       arr[i].e = i + 5;
  71       arr[i].f = i * 2 + 2;
  72       arr[i].g = i - 3;
  73       arr[i].h = 56;
  74
  75       check_res[i].c = arr[i].b;
  76       check_res[i].a = arr[i].f + arr[i].b;
  77       check_res[i].d = arr[i].f - arr[i].b;
  78       check_res[i].b = arr[i].f;
  79       check_res[i].f = arr[i].b;
  80       check_res[i].e = arr[i].f - arr[i].b;
  81       check_res[i].h = arr[i].f;
  82       check_res[i].g = arr[i].f - arr[i].b;
  83
  84       asm volatile ("" ::: "memory");
  85     }
  86
  87   main1 (arr);
  88
  89   return 0;
  90 }
  91
  92 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
  93