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