gcc/testsuite/gcc.dg/vect/vect-strided-u32-i8.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    int a;
  10    int b;
  11    int c;
  12    int d;
  13    int e;
  14    int f;
  15    int g;
  16    int 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
  26   for (i = 0; i < N; i++)
  27     {
  28       res[i].c = ptr->b - ptr->a + ptr->d - ptr->c;
  29       res[i].a = ptr->a + ptr->g + ptr->b + ptr->d;
  30       res[i].d = ptr->b - ptr->a + ptr->d - ptr->c;
  31       res[i].b = ptr->h - ptr->a + ptr->d - ptr->c;
  32       res[i].f = ptr->f + ptr->h;
  33       res[i].e = ptr->b - ptr->e;
  34       res[i].h = ptr->d - ptr->g;
  35       res[i].g = ptr->b - ptr->a + ptr->d - ptr->c;
  36       ptr++;
  37     }
  38
  39   /* check results:  */
  40 #pragma GCC novector
  41   for (i = 0; i < N; i++)
  42     {
  43       if (res[i].c != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  44           || res[i].a != arr[i].a + arr[i].g + arr[i].b + arr[i].d
  45           || res[i].d != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  46           || res[i].b != arr[i].h - arr[i].a + arr[i].d - arr[i].c
  47           || res[i].f != arr[i].f + arr[i].h
  48           || res[i].e != arr[i].b - arr[i].e
  49           || res[i].h != arr[i].d - arr[i].g
  50           || res[i].g != arr[i].b - arr[i].a + arr[i].d - arr[i].c)
  51          abort();
  52     }
  53 }
  54
  55 int main (void)
  56 {
  57   int i;
  58   s arr[N];
  59
  60   check_vect ();
  61
  62   for (i = 0; i < N; i++)
  63     {
  64       arr[i].a = i;
  65       arr[i].b = i * 2;
  66       arr[i].c = 17;
  67       arr[i].d = i+34;
  68       arr[i].e = i * 3 + 5;
  69       arr[i].f = i * 5;
  70       arr[i].g = i - 3;
  71       arr[i].h = 56;
  72       asm volatile ("" ::: "memory");
  73     }
  74
  75   main1 (arr);
  76
  77   return 0;
  78 }
  79
  80 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
  81