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

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include <stdio.h>
   5 #include "tree-vect.h"
   6
   7 #define N 32
   8
   9 typedef struct {
  10    unsigned char a;
  11    unsigned char b;
  12    unsigned char c;
  13    unsigned char d;
  14    unsigned char e;
  15    unsigned char f;
  16    unsigned char g;
  17    unsigned char h;
  18 } s;
  19
  20 __attribute__ ((noinline)) int
  21 main1 (s *arr)
  22 {
  23   int i;
  24   s *ptr = arr;
  25   s res[N];
  26   unsigned char u, t, s, x, y, z, w;
  27
  28   for (i = 0; i < N; i++)
  29     {
  30       u = ptr->b - ptr->a;
  31       t = ptr->d - ptr->c;
  32       res[i].c = u + t;
  33       s =  ptr->a + ptr->g;
  34       x = ptr->b + ptr->d;
  35       res[i].a = s + x;
  36       res[i].d = u + t;
  37       s = ptr->h - ptr->a;
  38       x = ptr->d - ptr->c;
  39       res[i].b = s + x;
  40       res[i].f = ptr->f + ptr->h;
  41       res[i].e = ptr->b + ptr->e;
  42       res[i].h = ptr->d - ptr->g;
  43       res[i].g = u + t;
  44       ptr++;
  45     }
  46
  47   /* check results:  */
  48   for (i = 0; i < N; i++)
  49     {
  50       if (res[i].c != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  51           || res[i].a != arr[i].a + arr[i].g + arr[i].b + arr[i].d
  52           || res[i].d != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  53           || res[i].b != arr[i].h - arr[i].a + arr[i].d - arr[i].c
  54           || res[i].f != arr[i].f + arr[i].h
  55           || res[i].e != arr[i].b + arr[i].e
  56           || res[i].h != arr[i].d - arr[i].g
  57           || res[i].g != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  58        )
  59           abort();
  60    }
  61 }
  62
  63 int main (void)
  64 {
  65   int i;
  66   s arr[N];
  67
  68   check_vect ();
  69
  70   for (i = 0; i < N; i++)
  71     {
  72       arr[i].a = i;
  73       arr[i].b = i * 2;
  74       arr[i].c = 17;
  75       arr[i].d = i+34;
  76       arr[i].e = i;
  77       arr[i].f = i + 5;
  78       arr[i].g = i + 3;
  79       arr[i].h = 67;
  80       if (arr[i].a == 178)
  81          abort();
  82     }
  83
  84   main1 (arr);
  85
  86   return 0;
  87 }
  88
  89 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_interleave && vect_extract_even_odd } } } } */
  90 /* { dg-final { cleanup-tree-dump "vect" } } */
  91