1 /* Interprocedural reference lists.
2 Copyright (C) 2010-2014 Free Software Foundation, Inc.
3 Contributed by Jan Hubicka
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
23 #include "coretypes.h"
28 #include "ipa-utils.h"
30 /* Remove reference. */
33 ipa_ref::remove_reference ()
35 struct ipa_ref_list
*list
= referred_ref_list ();
36 struct ipa_ref_list
*list2
= referring_ref_list ();
37 vec
<ipa_ref_t
, va_gc
> *old_references
= list2
->references
;
40 gcc_assert (list
->referring
[referred_index
] == this);
41 last
= list
->referring
.last ();
44 list
->referring
[referred_index
] = list
->referring
.last ();
45 list
->referring
[referred_index
]->referred_index
48 list
->referring
.pop ();
50 last
= &list2
->references
->last ();
52 struct ipa_ref
*ref
= this;
57 referred_ref_list ()->referring
[referred_index
] = ref
;
59 list2
->references
->pop ();
60 gcc_assert (list2
->references
== old_references
);
63 /* Return true when execution of reference can lead to return from
67 ipa_ref::cannot_lead_to_return ()
69 return cgraph_node_cannot_return (dyn_cast
<cgraph_node
*> (referring
));
72 /* Return reference list this reference is in. */
75 ipa_ref::referring_ref_list (void)
77 return &referring
->ref_list
;
80 /* Return reference list this reference is in. */
83 ipa_ref::referred_ref_list (void)
85 return &referred
->ref_list
;