gcc/testsuite/c-c++-common/torture/vector-subscript-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fno-common" { target hppa*-*-hpux* } } */
   3 #define vector __attribute__((vector_size(sizeof(int)*4) ))
   4
   5 /* Check to make sure that we extract and insert the vector at the same
   6    location for vector subscripting (with constant indexes) and
   7    that vectors layout are the same as arrays. */
   8
   9 struct TV4
  10 {
  11     vector int v;
  12 };
  13
  14 typedef struct TV4 MYV4;
  15
  16 static inline MYV4 myfunc2( int x, int y, int z, int w )
  17 {
  18     MYV4 temp;
  19     temp.v[0] = x;
  20     temp.v[1] = y;
  21     temp.v[2] = z;
  22     temp.v[3] = w;
  23     return temp;
  24 }
  25 MYV4 val3;
  26 __attribute__((noinline)) void modify (void)
  27 {
  28     val3 = myfunc2( 1, 2, 3, 4 );
  29 }
  30 int main( int argc, char* argv[] )
  31 {
  32   int a[4];
  33   int i;
  34
  35   /* Set up the vector.  */
  36   modify();
  37
  38   /* Check the vector via the global variable.  */
  39   if (val3.v[0] != 1)
  40     __builtin_abort ();
  41   if (val3.v[1] != 2)
  42     __builtin_abort ();
  43   if (val3.v[2] != 3)
  44     __builtin_abort ();
  45   if (val3.v[3] != 4)
  46     __builtin_abort ();
  47
  48   vector int a1 = val3.v;
  49
  50    /* Check the vector via a local variable.  */
  51   if (a1[0] != 1)
  52     __builtin_abort ();
  53   if (a1[1] != 2)
  54     __builtin_abort ();
  55   if (a1[2] != 3)
  56     __builtin_abort ();
  57   if (a1[3] != 4)
  58     __builtin_abort ();
  59
  60   __builtin_memcpy(a, &val3, sizeof(a));
  61    /* Check the vector via copying it to an array.  */
  62   for(i = 0; i < 4; i++)
  63     if (a[i] != i+1)
  64       __builtin_abort ();
  65
  66
  67   return 0;
  68 }
  69