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 #pragma GCC novector
  43   for (i = 0; i < N; i++)
  44     {
  45       if (res[i].a != check_res[i].a
  46           || res[i].b != check_res[i].b
  47           || res[i].c != check_res[i].c
  48           || res[i].d != check_res[i].d
  49           || res[i].e != check_res[i].e
  50           || res[i].f != check_res[i].f
  51           || res[i].g != check_res[i].g
  52           || res[i].h != check_res[i].h)
  53           abort ();
  54    }
  55 }
  56
  57
  58 int main (void)
  59 {
  60   int i;
  61   s arr[N];
  62
  63   check_vect ();
  64
  65   for (i = 0; i < N; i++)
  66     {
  67       arr[i].a = i;
  68       arr[i].b = i * 2;
  69       arr[i].c = 17;
  70       arr[i].d = i+34;
  71       arr[i].e = i + 5;
  72       arr[i].f = i * 2 + 2;
  73       arr[i].g = i - 3;
  74       arr[i].h = 56;
  75
  76       check_res[i].c = arr[i].b;
  77       check_res[i].a = arr[i].f + arr[i].b;
  78       check_res[i].d = arr[i].f - arr[i].b;
  79       check_res[i].b = arr[i].f;
  80       check_res[i].f = arr[i].b;
  81       check_res[i].e = arr[i].f - arr[i].b;
  82       check_res[i].h = arr[i].f;
  83       check_res[i].g = arr[i].f - arr[i].b;
  84
  85       asm volatile ("" ::: "memory");
  86     }
  87
  88   main1 (arr);
  89
  90   return 0;
  91 }
  92
  93 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
  94