gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap7.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   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   unsigned char u, t, s, x, y, z, w;
  26
  27   for (i = 0; i < N; i++)
  28     {
  29       u = ptr->b - ptr->a;
  30       t = ptr->d - ptr->c;
  31       res[i].c = u + t;
  32       x = ptr->b + ptr->d;
  33       res[i].a = ptr->a + x;
  34       res[i].d = u + t;
  35       s = ptr->h - ptr->a;
  36       res[i].b = s + t;
  37       res[i].f = ptr->f + ptr->h;
  38       res[i].e = ptr->b + ptr->e;
  39       res[i].h = ptr->d;
  40       res[i].g = u + t;
  41       ptr++;
  42     }
  43
  44   /* check results:  */
  45 #pragma GCC novector
  46   for (i = 0; i < N; i++)
  47     {
  48       if (res[i].c != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  49           || res[i].a != arr[i].a + arr[i].b + arr[i].d
  50           || res[i].d != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  51           || res[i].b != arr[i].h - arr[i].a + arr[i].d - arr[i].c
  52           || res[i].f != arr[i].f + arr[i].h
  53           || res[i].e != arr[i].b + arr[i].e
  54           || res[i].h != arr[i].d
  55           || res[i].g != arr[i].b - arr[i].a + arr[i].d - arr[i].c)
  56          abort();
  57    }
  58 }
  59
  60
  61 int main (void)
  62 {
  63   int i;
  64   s arr[N];
  65
  66   check_vect ();
  67
  68   for (i = 0; i < N; i++)
  69     {
  70       arr[i].a = i;
  71       arr[i].b = i * 2;
  72       arr[i].c = 17;
  73       arr[i].d = i+34;
  74       arr[i].e = i * 3 + 5;
  75       arr[i].f = i * 5;
  76       arr[i].g = i - 3;
  77       arr[i].h = 67;
  78       asm volatile ("" ::: "memory");
  79     }
  80
  81   main1 (arr);
  82
  83   return 0;
  84 }
  85
  86 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
  87