gcc/testsuite/c-c++-common/torture/vector-subscript-1.c

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