1  /* { dg-require-effective-target mmap } */
       2  
       3  #include <sys/mman.h>
       4  #include <stdio.h>
       5  #include "tree-vect.h"
       6  
       7  #define COUNT 320
       8  #define MMAP_SIZE 0x10000
       9  #define ADDRESS 0x1122000000
      10  #define TYPE double
      11  
      12  #ifndef MAP_ANONYMOUS
      13  #define MAP_ANONYMOUS MAP_ANON
      14  #endif
      15  
      16  void __attribute__((noinline))
      17  foo (TYPE *__restrict a, TYPE *__restrict b)
      18  {
      19    int n;
      20  
      21    b = __builtin_assume_aligned (b, sizeof (TYPE) * 2);
      22    a = __builtin_assume_aligned (a, sizeof (TYPE) * 2);
      23    for (n = 0; n < COUNT; n++)
      24      {
      25        a[n] = b[n * 4] + b[n * 4 + 1];
      26      }
      27  }
      28  
      29  int
      30  main (void)
      31  {
      32    void *x;
      33    size_t b_offset;
      34  
      35    check_vect ();
      36  
      37    x = mmap ((void *) ADDRESS, MMAP_SIZE, PROT_READ | PROT_WRITE,
      38  	    MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
      39    if (x == MAP_FAILED)
      40      {
      41        perror ("mmap");
      42        return 1;
      43      }
      44  
      45    b_offset = MMAP_SIZE - (4 * COUNT - 2) * sizeof (TYPE);
      46    foo ((TYPE *) x, (TYPE *) ((char *) x + b_offset));
      47    return 0;
      48  }