gcc/testsuite/gcc.target/powerpc/pr35907.c

   1 /* PR target/35907 */
   2 /* { dg-do run { target { powerpc*-*-* && vmx_hw } } } */
   3 /* { dg-do compile { target { powerpc*-*-* && { ! vmx_hw } } } } */
   4 /* { dg-require-effective-target powerpc_altivec_ok } */
   5 /* { dg-options "-O2 -maltivec" } */
   6
   7 #define vector __attribute__((vector_size (16)))
   8 union
   9 {
  10   vector int k;
  11   int c[16];
  12 } u, v, w;
  13 vector int m;
  14
  15 void __attribute__((noinline))
  16 bar (void *i, vector int j)
  17 {
  18   asm volatile ("" : : "r" (i), "r" (&j) : "memory");
  19 }
  20
  21 int __attribute__((noinline))
  22 foo (int i, vector int j)
  23 {
  24   char *p = __builtin_alloca (64 + i);
  25   m += u.k;
  26   v.k = m;
  27   w.k = j;
  28   if (__builtin_memcmp (&v.c, &w.c, 16) != 0)
  29     __builtin_abort ();
  30   j += u.k;
  31   bar (p, j);
  32   j += u.k;
  33   bar (p, j);
  34   return 0;
  35 }
  36
  37 void
  38 test (void)
  39 {
  40   vector int l;
  41   int i;
  42   for (i = 0; i < 4; i++)
  43     u.c[i] = i;
  44   l = u.k;
  45   if (foo (64, l))
  46     __builtin_abort ();
  47   l += u.k;
  48   if (foo (64, l))
  49     __builtin_abort ();
  50 }
  51
  52 int
  53 main ()
  54 {
  55   test ();
  56   return 0;
  57 }