gcc/testsuite/gcc.dg/ipa/pr61986.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3" } */
   3
   4 int a, b, c;
   5
   6 struct S
   7 {
   8   int f0;
   9   int f1;
  10 } d;
  11
  12 static int fn2 (struct S);
  13 void fn3 (struct S);
  14
  15 void
  16 fn1 (struct S p)
  17 {
  18   struct S h = { 0, 0 };
  19   fn3 (p);
  20   fn2 (h);
  21 }
  22
  23 int
  24 fn2 (struct S p)
  25 {
  26   struct S j = { 0, 0 };
  27   fn3 (p);
  28   fn2 (j);
  29   return 0;
  30 }
  31
  32 void
  33 fn3 (struct S p)
  34 {
  35   for (; b; a++)
  36     c = p.f0;
  37   fn1 (d);
  38 }
  39
  40 void
  41 fn4 ()
  42 {
  43   for (;;)
  44     {
  45       struct S f = { 0, 0 };
  46       fn1 (f);
  47     }
  48 }