gcc/testsuite/gcc.target/i386/pr66648.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -mstringop-strategy=unrolled_loop -mtune=nocona" } */
   3
   4 #define PATTERN 0xdeadbeef
   5 #define SIZE    32
   6
   7 struct S { int i; char str[SIZE]; int j; };
   8
   9 void __attribute__((noclone, noinline))
  10 my_memcpy (char *, const char *, unsigned int);
  11
  12 void
  13 my_memcpy (char *dst, const char *src, unsigned int len)
  14 {
  15   if (len < 8)
  16     __builtin_abort ();
  17
  18   __builtin_memcpy (dst, src, len);
  19 }
  20
  21 int
  22 main (void)
  23 {
  24   const char str[SIZE]= "1234567890123456789012345678901";
  25   struct S *s = __builtin_malloc (sizeof (struct S));
  26
  27   s->j = PATTERN;
  28   my_memcpy (s->str, str, SIZE);
  29   if (s->j != PATTERN)
  30     __builtin_abort ();
  31
  32   return 0;
  33 }