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

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