gcc/testsuite/gcc.dg/pr80170.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fgimple -O2 -ftree-slp-vectorize" } */
   3 /* { dg-require-effective-target ptr32plus } */
   4
   5 struct  A
   6 {
   7   void * a;
   8   void * b;
   9 };
  10
  11 struct __attribute__((aligned(16))) B
  12 {
  13   void * pad;
  14   void * misaligned;
  15   void * pad2;
  16
  17   struct A a;
  18 };
  19
  20 __attribute__((noclone, noinline))
  21 void __GIMPLE (startwith("slp"))
  22 NullB (void * misalignedPtr)
  23 {
  24   struct B * b;
  25
  26   bb_2:
  27 #if __SIZEOF_LONG__ == 8
  28   b_2 = misalignedPtr_1(D) + 18446744073709551608ul;
  29 #else
  30   b_2 = misalignedPtr_1(D) + 4294967292ul;
  31 #endif
  32   __MEM <struct B> (b_2).a.a = _Literal (void *) 0;
  33   __MEM <struct B> (b_2).a.b = _Literal (void *) 0;
  34   return;
  35
  36 }
  37
  38 int main()
  39 {
  40   struct B b;
  41   NullB (&b.misaligned);
  42   return 0;
  43 }