gcc/testsuite/gcc.target/s390/memset-2.c

   1 /* Funtional setmem test.  */
   2
   3 /* { dg-do run } */
   4 /* { dg-options "-O3" } */
   5
   6 #define MAX_LEN (8 * 1000)
   7
   8 __attribute__ ((noinline))
   9 int
  10 check_mem (char *mem, int val, int len)
  11 {
  12   int i;
  13
  14   if (mem[0] != 0x71)
  15     __builtin_abort();
  16   for (i = 1; i <= len; i++)
  17     if (mem[i] != val)
  18       __builtin_abort();
  19   if (mem[len + 1] != 0x71 + (len + 1) % 4)
  20     __builtin_abort();
  21 }
  22
  23 __attribute__ ((noinline))
  24 void
  25 init_mem (char *mem)
  26 {
  27   unsigned int *p;
  28   int i;
  29
  30   p = (unsigned int *)mem;
  31   for (i = 0; i < MAX_LEN / sizeof(unsigned int); i++)
  32     p[i] = 0x71727374;
  33 }
  34
  35 #define MEMSET_CHECK(VAL, SIZE)                 \
  36   init_mem (mem1);                              \
  37   __builtin_memset (mem1 + 1, 0, (SIZE));       \
  38   check_mem (mem1, 0, SIZE);                    \
  39   init_mem (mem2);                              \
  40   __builtin_memset (mem2 + 1, (VAL), (SIZE));   \
  41   check_mem (mem2, VAL, SIZE);
  42
  43 char mem1[MAX_LEN + 2];
  44 char mem2[MAX_LEN + 2];
  45
  46 int main(int argc, char **argv)
  47 {
  48   int lens[] =
  49     {
  50       256, 257, 258, 259,
  51       512, 513, 514, 515,
  52       768, 769, 770, 771,
  53       1024, 1025, 1026, 1027,
  54       1280, 1281, 1282, 1283,
  55       -999
  56     };
  57   int t;
  58
  59   /* variable length */
  60   for (t = 0; lens[t] != -999; t++)
  61     {
  62       MEMSET_CHECK (argc + 0x10, lens[t]);
  63     }
  64
  65   /* constant length */
  66   MEMSET_CHECK (argc + 0x10, 0);
  67   MEMSET_CHECK (argc + 0x10, 1);
  68   MEMSET_CHECK (argc + 0x10, 2);
  69   MEMSET_CHECK (argc + 0x10, 3);
  70   MEMSET_CHECK (argc + 0x10, 256);
  71   MEMSET_CHECK (argc + 0x10, 257);
  72   MEMSET_CHECK (argc + 0x10, 258);
  73   MEMSET_CHECK (argc + 0x10, 259);
  74   MEMSET_CHECK (argc + 0x10, 512);
  75   MEMSET_CHECK (argc + 0x10, 513);
  76   MEMSET_CHECK (argc + 0x10, 514);
  77   MEMSET_CHECK (argc + 0x10, 515);
  78   MEMSET_CHECK (argc + 0x10, 768);
  79   MEMSET_CHECK (argc + 0x10, 769);
  80   MEMSET_CHECK (argc + 0x10, 770);
  81   MEMSET_CHECK (argc + 0x10, 771);
  82   MEMSET_CHECK (argc + 0x10, 1024);
  83   MEMSET_CHECK (argc + 0x10, 1025);
  84   MEMSET_CHECK (argc + 0x10, 1026);
  85   MEMSET_CHECK (argc + 0x10, 1027);
  86   MEMSET_CHECK (argc + 0x10, 1280);
  87   MEMSET_CHECK (argc + 0x10, 1281);
  88   MEMSET_CHECK (argc + 0x10, 1282);
  89   MEMSET_CHECK (argc + 0x10, 1283);
  90
  91   return 0;
  92 }