vect-strided-u8-i8-gap4.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   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 (s *arr)
  21 {
  22   int i;
  23   s *ptr = arr;
  24   s res[N];
  25   unsigned char x;
  26
  27   for (i = 0; i < N; i++)
  28     {
  29       res[i].c = ptr->b + ptr->c;
  30       x = ptr->c + ptr->f;
  31       res[i].a = x + ptr->b;
  32       res[i].d = ptr->b + ptr->c;
  33       res[i].b = ptr->c;
  34       res[i].f = ptr->f + ptr->e;
  35       res[i].e = ptr->b + ptr->e;
  36       res[i].h = ptr->c;
  37       res[i].g = ptr->b + ptr->c;
  38       ptr++;
  39     }
  40
  41   /* check results:  */
  42   for (i = 0; i < N; i++)
  43     {
  44       if (res[i].c != arr[i].b + arr[i].c
  45           || res[i].a != arr[i].c + arr[i].f + arr[i].b
  46           || res[i].d != arr[i].b + arr[i].c
  47           || res[i].b != arr[i].c
  48           || res[i].f != arr[i].f + arr[i].e
  49           || res[i].e != arr[i].b + arr[i].e
  50           || res[i].h != arr[i].c
  51           || res[i].g != arr[i].b + arr[i].c)
  52           abort ();
  53    }
  54
  55   ptr = arr;
  56   /* Not vectorizable: gap in store. */
  57   for (i = 0; i < N; i++)
  58     {
  59       res[i].a = ptr->b;
  60       res[i].b = ptr->c;
  61       ptr++;
  62     }
  63
  64   /* Check results.  */
  65   for (i = 0; i < N; i++)
  66     {
  67       if (res[i].a != arr[i].b
  68           || res[i].b != arr[i].c)
  69           abort ();
  70     }
  71
  72 }
  73
  74
  75 int main (void)
  76 {
  77   int i;
  78   s arr[N];
  79
  80   check_vect ();
  81
  82   for (i = 0; i < N; i++)
  83     {
  84       arr[i].a = i;
  85       arr[i].b = i * 2;
  86       arr[i].c = 17;
  87       arr[i].d = i+34;
  88       arr[i].e = i * 3 + 5;
  89       arr[i].f = i * 5;
  90       arr[i].g = i - 3;
  91       arr[i].h = 56;
  92       if (arr[i].a == 178)
  93          abort();
  94     }
  95
  96   main1 (arr);
  97
  98   return 0;
  99 }
 100
 101 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided8 } } } */
 102 /* { dg-final { cleanup-tree-dump "vect" } } */
 103