gcc/testsuite/gcc.dg/vect/pr103116-2.c

   1 /* { dg-require-effective-target mmap } */
   2 /* { dg-additional-options "-mssse3" { target x86_64-*-* i?86-*-* } } */
   3
   4 #include <sys/mman.h>
   5 #include <stdio.h>
   6 #include "tree-vect.h"
   7
   8 #define COUNT 128
   9 #define MMAP_SIZE 0x20000
  10 #define ADDRESS 0x1122000000
  11 #define TYPE unsigned short
  12 #define GROUP_SIZE 2
  13
  14 #ifndef MAP_ANONYMOUS
  15 #define MAP_ANONYMOUS MAP_ANON
  16 #endif
  17
  18 void __attribute__((noipa))
  19 loop (TYPE *restrict x, TYPE *restrict y)
  20 {
  21   for (int i = 0; i < COUNT; ++i)
  22     {
  23       x[i * 8] = y[i * GROUP_SIZE] + 1;
  24       x[i * 8 + 1] = y[i * GROUP_SIZE] + 2;
  25       x[i * 8 + 2] = y[i * GROUP_SIZE + 1] + 3;
  26       x[i * 8 + 3] = y[i * GROUP_SIZE + 1] + 4;
  27       x[i * 8 + 4] = y[i * GROUP_SIZE] + 5;
  28       x[i * 8 + 5] = y[i * GROUP_SIZE] + 6;
  29       x[i * 8 + 6] = y[i * GROUP_SIZE + 1] + 7;
  30       x[i * 8 + 7] = y[i * GROUP_SIZE + 1] + 8;
  31     }
  32 }
  33
  34 TYPE x[COUNT * 8];
  35
  36 int
  37 main (void)
  38 {
  39   void *y;
  40   TYPE *end_y;
  41
  42   check_vect ();
  43
  44   y = mmap ((void *) ADDRESS, MMAP_SIZE, PROT_READ | PROT_WRITE,
  45             MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  46   if (y == MAP_FAILED)
  47     {
  48       perror ("mmap");
  49       return 1;
  50     }
  51
  52   end_y = (TYPE *) ((char *) y + MMAP_SIZE);
  53
  54   loop (x, end_y - COUNT * GROUP_SIZE);
  55
  56   return 0;
  57 }
  58
  59 /* Whether or not peeling for gaps is required depends on the ability of
  60    the target to compose a vector from two-element bits.  */