gcc/testsuite/gcc.dg/pr51695.c

   1 /* PR debug/51695 */
   2 /* { dg-do compile { target { int32plus } } } */
   3 /* { dg-options "-O2 -g" } */
   4
   5 typedef struct
   6 {
   7   struct { unsigned int t1, t2, t3, t4, t5, t6; } t;
   8   int p;
   9   struct { double X, Y, Z; } r;
  10 } T;
  11 typedef struct { T *h; } S;
  12
  13 static unsigned int v = 0x12345678;
  14
  15 int
  16 foo (void)
  17 {
  18   v = (v & 0x80000000) ? ((v << 1) ^ 0xa398655d) : (v << 1);
  19   return 0;
  20 }
  21
  22 double
  23 bar (void)
  24 {
  25   unsigned int o;
  26   v = (v & 0x80000000) ? ((v << 1) ^ 0xa398655d) : (v << 1);
  27   o = v & 0xffff;
  28   return (double) o / 32768.0;
  29 }
  30
  31 int
  32 baz (void)
  33 {
  34   foo ();
  35   return 0;
  36 }
  37
  38 void
  39 test (S *x)
  40 {
  41   T *t = x->h;
  42   t->t.t1 = foo ();
  43   t->t.t2 = foo ();
  44   t->t.t3 = foo ();
  45   t->t.t4 = foo ();
  46   t->t.t5 = foo ();
  47   t->t.t6 = foo ();
  48   t->p = baz ();
  49   t->r.X = bar ();
  50   t->r.Y = bar ();
  51   t->r.Z = bar ();
  52 }