gcc/testsuite/gcc.dg/vect/vect-strided-a-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 volatile int y = 0;
  20
  21 __attribute__ ((noinline)) int
  22 main1 ()
  23 {
  24   int i;
  25   s arr[N];
  26   s *ptr = arr;
  27   s check_res[N];
  28   s res[N];
  29
  30   for (i = 0; i < N; i++)
  31     {
  32       arr[i].a = i;
  33       arr[i].b = i * 2;
  34       arr[i].c = 17;
  35       arr[i].d = i+34;
  36       arr[i].e = i + 5;
  37       arr[i].f = i * 2 + 2;
  38       arr[i].g = i - 3;
  39       arr[i].h = 56;
  40
  41       check_res[i].c = arr[i].a;
  42       check_res[i].a = arr[i].f + arr[i].a;
  43       check_res[i].d = arr[i].f - arr[i].a;
  44       check_res[i].b = arr[i].f;
  45       check_res[i].f = arr[i].a;
  46       check_res[i].e = arr[i].f - arr[i].a;
  47       check_res[i].h = arr[i].f;
  48       check_res[i].g = arr[i].f - arr[i].a;
  49
  50       if (y) /* Avoid vectorization.  */
  51         abort ();
  52     }
  53
  54   for (i = 0; i < N; i++)
  55     {
  56       res[i].c = ptr->a;
  57       res[i].a = ptr->f + ptr->a;
  58       res[i].d = ptr->f - ptr->a;
  59       res[i].b = ptr->f;
  60       res[i].f = ptr->a;
  61       res[i].e = ptr->f - ptr->a;
  62       res[i].h = ptr->f;
  63       res[i].g = ptr->f - ptr->a;
  64       ptr++;
  65     }
  66
  67   /* check results:  */
  68   for (i = 0; i < N; i++)
  69     {
  70       if (res[i].a != check_res[i].a
  71           || res[i].b != check_res[i].b
  72           || res[i].c != check_res[i].c
  73           || res[i].d != check_res[i].d
  74           || res[i].e != check_res[i].e
  75           || res[i].f != check_res[i].f
  76           || res[i].g != check_res[i].g
  77           || res[i].h != check_res[i].h)
  78           abort ();
  79    }
  80 }
  81
  82
  83 int main (void)
  84 {
  85   check_vect ();
  86
  87   main1 ();
  88
  89   return 0;
  90 }
  91
  92 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
  93