gcc/testsuite/gcc.dg/torture/vector-1.c

   1 /* Check that vector extraction works correctly. */
   2
   3 /* { dg-do run } */
   4 /* { dg-options "-msse" { target { i?86-*-* x86_64-*-* } } } */
   5 /* { dg-require-effective-target sse_runtime { target { i?86-*-* x86_64-*-* } } } */
   6 /* { dg-options "-mabi=altivec" { target { powerpc-*-* powerpc64-*-* } } } */
   7 /* { dg-require-effective-target vmx_hw { target { powerpc-*-* powerpc64-*-* } } } */
   8
   9 #define vector __attribute__((vector_size(16) ))
  10
  11 int f0(vector int t)
  12 {
  13   return ((int*)&t)[0];
  14 }
  15 int f1(vector int t)
  16 {
  17   return ((int*)&t)[1];
  18 }
  19 int f2(vector int t)
  20 {
  21   return ((int*)&t)[2];
  22 }
  23 int f3(vector int t)
  24 {
  25   return ((int*)&t)[3];
  26 }
  27 int main(void)
  28 {
  29   vector int a = {0, 1, 2, 3};
  30   /* Make sure that we have the correct size for the vectors. */
  31   if (sizeof(int) != 4)
  32     __builtin_exit (0);
  33   if (f0(a) != 0)
  34     __builtin_abort ();
  35   if (f1(a) != 1)
  36     __builtin_abort ();
  37   if (f2(a) != 2)
  38     __builtin_abort ();
  39   if (f3(a) != 3)
  40     __builtin_abort ();
  41   return 0;
  42 }