gcc/testsuite/gcc.dg/vect/vect-alias-check-10.c

   1 #define N 87
   2 #define M 6
   3
   4 typedef signed char sc;
   5 typedef unsigned char uc;
   6 typedef signed short ss;
   7 typedef unsigned short us;
   8 typedef int si;
   9 typedef unsigned int ui;
  10 typedef signed long long sll;
  11 typedef unsigned long long ull;
  12
  13 #define FOR_EACH_TYPE(M) \
  14   M (sc) M (uc) \
  15   M (ss) M (us) \
  16   M (si) M (ui) \
  17   M (sll) M (ull) \
  18   M (float) M (double)
  19
  20 #define TEST_VALUE(I) ((I) * 5 / 2)
  21
  22 #define ADD_TEST(TYPE)                          \
  23   void __attribute__((noinline, noclone))       \
  24   test_##TYPE (TYPE *a, int step)               \
  25   {                                             \
  26     for (int i = 0; i < N; ++i)                 \
  27       {                                         \
  28         a[i * step + 0] = a[i * step + 0] + 1;  \
  29         a[i * step + 1] = a[i * step + 1] + 2;  \
  30         a[i * step + 2] = a[i * step + 2] + 4;  \
  31         a[i * step + 3] = a[i * step + 3] + 8;  \
  32       }                                         \
  33   }                                             \
  34   void __attribute__((noinline, noclone))       \
  35   ref_##TYPE (TYPE *a, int step)                \
  36   {                                             \
  37     for (int i = 0; i < N; ++i)                 \
  38       {                                         \
  39         a[i * step + 0] = a[i * step + 0] + 1;  \
  40         a[i * step + 1] = a[i * step + 1] + 2;  \
  41         a[i * step + 2] = a[i * step + 2] + 4;  \
  42         a[i * step + 3] = a[i * step + 3] + 8;  \
  43         asm volatile ("");                      \
  44       }                                         \
  45   }
  46
  47 #define DO_TEST(TYPE)                                   \
  48   for (int j = -M; j <= M; ++j)                         \
  49     {                                                   \
  50       TYPE a[N * M], b[N * M];                          \
  51       for (int i = 0; i < N * M; ++i)                   \
  52         a[i] = b[i] = TEST_VALUE (i);                   \
  53       int offset = (j < 0 ? N * M - 4 : 0);             \
  54       test_##TYPE (a + offset, j);                      \
  55       ref_##TYPE (b + offset, j);                       \
  56       if (__builtin_memcmp (a, b, sizeof (a)) != 0)     \
  57         __builtin_abort ();                             \
  58     }
  59
  60 FOR_EACH_TYPE (ADD_TEST)
  61
  62 int
  63 main (void)
  64 {
  65   FOR_EACH_TYPE (DO_TEST)
  66   return 0;
  67 }