gcc/testsuite/gcc.c-torture/execute/memcpy-bi.c

   1 /* Test builtin-memcpy (which may emit different code for different N).  */
   2 #include <string.h>
   3
   4 #define TESTSIZE 80
   5
   6 char src[TESTSIZE] __attribute__ ((aligned));
   7 char dst[TESTSIZE] __attribute__ ((aligned));
   8
   9 void
  10 check (char *test, char *match, int n)
  11 {
  12   if (memcmp (test, match, n))
  13     abort ();
  14 }
  15
  16 #define TN(n) \
  17 { memset (dst, 0, n); memcpy (dst, src, n); check (dst, src, n); }
  18 #define T(n) \
  19 TN (n) \
  20 TN ((n) + 1) \
  21 TN ((n) + 2) \
  22 TN ((n) + 3)
  23
  24 main ()
  25 {
  26   int i,j;
  27
  28   for (i = 0; i < sizeof (src); ++i)
  29       src[i] = 'a' + i % 26;
  30
  31   T (0);
  32   T (4);
  33   T (8);
  34   T (12);
  35   T (16);
  36   T (20);
  37   T (24);
  38   T (28);
  39   T (32);
  40   T (36);
  41   T (40);
  42   T (44);
  43   T (48);
  44   T (52);
  45   T (56);
  46   T (60);
  47   T (64);
  48   T (68);
  49   T (72);
  50   T (76);
  51
  52   return 0;
  53 }