gcc/testsuite/gcc.dg/pr36504.c

   1 /* PR tree-optimization/36504 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O3 -fprefetch-loop-arrays -w" } */
   4
   5 struct A { struct { int a; } b[8]; };
   6 struct B { int c; int d; };
   7 struct C { struct B d; };
   8
   9 void bar (struct C *, int);
  10
  11 struct B
  12 foo (struct C *p, struct A *e, int b)
  13 {
  14   struct B q;
  15   bar (p, e->b[b].a);
  16   return q;
  17 }
  18
  19 void
  20 baz (int b, struct A *e)
  21 {
  22   struct C p;
  23   for (; b; ++b)
  24     p.d = foo (&p, e, b);
  25 }