1/*
2 * Copyright (C) 2014 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "DFGPhiChildren.h"
28
29#if ENABLE(DFG_JIT)
30
31#include "DFGGraph.h"
32
33namespace JSC { namespace DFG {
34
35PhiChildren::PhiChildren()
36{
37}
38
39PhiChildren::PhiChildren(Graph& graph)
40{
41 for (BasicBlock* block : graph.blocksInNaturalOrder()) {
42 for (Node* node : *block) {
43 if (node->op() != Upsilon)
44 continue;
45
46 m_children.add(node->phi(), List()).iterator->value.append(node);
47 }
48 }
49}
50
51PhiChildren::~PhiChildren()
52{
53}
54
55const PhiChildren::List& PhiChildren::upsilonsOf(Node* node) const
56{
57 ASSERT(node->op() == Phi);
58 return m_children.find(node)->value;
59}
60
61} } // namespace JSC::DFG
62
63#endif // ENABLE(DFG_JIT)
64
65