gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/memcpy-bi.c

   1 /* Test builtin-memcpy (which may emit different code for different N).  */
   2
   3 #define TESTSIZE 80
   4
   5 char src[TESTSIZE] __attribute__ ((aligned));
   6 char dst[TESTSIZE] __attribute__ ((aligned));
   7
   8 void
   9 check (char *test, char *match, int n)
  10 {
  11   if (memcmp (test, match, n))
  12     abort ();
  13 }
  14
  15 #define TN(n) \
  16 { memset (dst, 0, n); memcpy (dst, src, n); check (dst, src, n); }
  17 #define T(n) \
  18 TN (n) \
  19 TN ((n) + 1) \
  20 TN ((n) + 2) \
  21 TN ((n) + 3)
  22
  23 main ()
  24 {
  25   int i,j;
  26
  27   for (i = 0; i < sizeof (src); ++i)
  28       src[i] = 'a' + i % 26;
  29
  30   T (0);
  31   T (4);
  32   T (8);
  33   T (12);
  34   T (16);
  35   T (20);
  36   T (24);
  37   T (28);
  38   T (32);
  39   T (36);
  40   T (40);
  41   T (44);
  42   T (48);
  43   T (52);
  44   T (56);
  45   T (60);
  46   T (64);
  47   T (68);
  48   T (72);
  49   T (76);
  50
  51   return 0;
  52 }