gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap7-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 volatile int y = 0;
  22
  23 __attribute__ ((noinline)) int
  24 main1 (s *arr)
  25 {
  26   int i;
  27   s *ptr = arr;
  28   s res[N];
  29   unsigned char u, t, s, x, z, w;
  30
  31   for (i = 0; i < N; i++)
  32     {
  33       u = ptr->b - ptr->a;
  34       t = ptr->d - ptr->c;
  35       res[i].c = u + t;
  36       x = ptr->b + ptr->d;
  37       res[i].a = ptr->a + x;
  38       res[i].d = u + t;
  39       s = ptr->h - ptr->a;
  40       res[i].b = s + t;
  41       res[i].f = ptr->f + ptr->h;
  42       res[i].e = ptr->b + ptr->e;
  43       res[i].h = ptr->d;
  44       res[i].g = u + t;
  45       ptr++;
  46     }
  47
  48   /* check results:  */
  49   for (i = 0; i < N; i++)
  50     {
  51       if (res[i].a != check_res[i].a
  52           || res[i].b != check_res[i].b
  53           || res[i].c != check_res[i].c
  54           || res[i].d != check_res[i].d
  55           || res[i].e != check_res[i].e
  56           || res[i].f != check_res[i].f
  57           || res[i].g != check_res[i].g
  58           || res[i].h != check_res[i].h)
  59          abort ();
  60    }
  61 }
  62
  63
  64 int main (void)
  65 {
  66   int i;
  67   s arr[N];
  68   unsigned char u, t, s, x, z, w;
  69
  70   check_vect ();
  71
  72   for (i = 0; i < N; i++)
  73     {
  74       arr[i].a = i;
  75       arr[i].b = i * 2;
  76       arr[i].c = 17;
  77       arr[i].d = i+34;
  78       arr[i].e = i * 3 + 5;
  79       arr[i].f = i * 5;
  80       arr[i].g = i - 3;
  81       arr[i].h = 67;
  82
  83       u = arr[i].b - arr[i].a;
  84       t = arr[i].d - arr[i].c;
  85       check_res[i].c = u + t;
  86       x = arr[i].b + arr[i].d;
  87       check_res[i].a = arr[i].a + x;
  88       check_res[i].d = u + t;
  89       s = arr[i].h - arr[i].a;
  90       check_res[i].b = s + t;
  91       check_res[i].f = arr[i].f + arr[i].h;
  92       check_res[i].e = arr[i].b + arr[i].e;
  93       check_res[i].h = arr[i].d;
  94       check_res[i].g = u + t;
  95
  96       if (y) /* Avoid vectorization.  */
  97         abort ();
  98     }
  99
 100   main1 (arr);
 101
 102   return 0;
 103 }
 104
 105 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
 106