gcc/testsuite/gcc.dg/vect/pr49038.c

   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 unsigned short
  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   for (n = 0; n < COUNT; n++)
  22     a[n] = b[n * 2];
  23 }
  24
  25 int
  26 main (void)
  27 {
  28   void *x;
  29   size_t b_offset;
  30
  31   check_vect ();
  32
  33   x = mmap ((void *) ADDRESS, MMAP_SIZE, PROT_READ | PROT_WRITE,
  34             MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  35   if (x == MAP_FAILED)
  36     {
  37       perror ("mmap");
  38       return 1;
  39     }
  40
  41   b_offset = MMAP_SIZE - (2 * COUNT - 1) * sizeof (TYPE);
  42   foo ((unsigned short *) x,
  43        (unsigned short *) ((char *) x + b_offset));
  44   return 0;
  45 }
  46