gcc/testsuite/gcc.dg/torture/pr67609.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fno-common" { target hppa*-*-hpux* } } */
   3
   4 typedef union
   5 {
   6   double v[2];
   7   double s __attribute__ ((vector_size (16)));
   8 } data;
   9
  10 data reg;
  11
  12 void __attribute__ ((noinline))
  13 set_lower (double b)
  14 {
  15   data stack_var;
  16   double __attribute__ ((vector_size (16))) one = { 1.0, 1.0 };
  17   stack_var.s = reg.s;
  18   stack_var.s += one;
  19   stack_var.v[0] += b;
  20   reg.s = stack_var.s;
  21 }
  22
  23 int
  24 main (int argc, char ** argv)
  25 {
  26   reg.v[0] = 1.0;
  27   reg.v[1] = 1.0;
  28   /* reg should contain { 1.0, 1.0 }.  */
  29   set_lower (2.0);
  30   /* reg should contain { 4.0, 2.0 }.  */
  31   if ((int) reg.v[0] != 4 || (int) reg.v[1] != 2)
  32     __builtin_abort ();
  33   return 0;
  34 }