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

   1 /* PR target/35907 */
   2 /* { dg-do run { target powerpc*-*-* } } */
   3 /* { dg-require-effective-target powerpc_altivec_ok } */
   4 /* { dg-options "-O2 -maltivec" } */
   5
   6 #include "altivec_check.h"
   7
   8 #define vector __attribute__((vector_size (16)))
   9 union
  10 {
  11   vector int k;
  12   int c[16];
  13 } u, v, w;
  14 vector int m;
  15
  16 void __attribute__((noinline))
  17 bar (void *i, vector int j)
  18 {
  19   asm volatile ("" : : "r" (i), "r" (&j) : "memory");
  20 }
  21
  22 int __attribute__((noinline))
  23 foo (int i, vector int j)
  24 {
  25   char *p = __builtin_alloca (64 + i);
  26   m += u.k;
  27   v.k = m;
  28   w.k = j;
  29   if (__builtin_memcmp (&v.c, &w.c, 16) != 0)
  30     __builtin_abort ();
  31   j += u.k;
  32   bar (p, j);
  33   j += u.k;
  34   bar (p, j);
  35   return 0;
  36 }
  37
  38 void
  39 test (void)
  40 {
  41   vector int l;
  42   int i;
  43   for (i = 0; i < 4; i++)
  44     u.c[i] = i;
  45   l = u.k;
  46   if (foo (64, l))
  47     __builtin_abort ();
  48   l += u.k;
  49   if (foo (64, l))
  50     __builtin_abort ();
  51 }
  52
  53 int
  54 main ()
  55 {
  56   altivec_check ();
  57   test ();
  58   return 0;
  59 }