1/*
2 * Copyright (C) 2015-2017 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 "AirInst.h"
28
29#if ENABLE(B3_JIT)
30
31#include "AirInstInlines.h"
32#include "B3Value.h"
33#include <wtf/ListDump.h>
34
35namespace JSC { namespace B3 { namespace Air {
36
37bool Inst::hasEarlyDef()
38{
39 if (kind.opcode == Patch && !extraEarlyClobberedRegs().isEmpty())
40 return true;
41 bool result = false;
42 forEachArg(
43 [&] (Arg&, Arg::Role role, Bank, Width) {
44 result |= Arg::isEarlyDef(role);
45 });
46 return result;
47}
48
49bool Inst::hasLateUseOrDef()
50{
51 if (kind.opcode == Patch && !extraClobberedRegs().isEmpty())
52 return true;
53 bool result = false;
54 forEachArg(
55 [&] (Arg&, Arg::Role role, Bank, Width) {
56 result |= Arg::isLateUse(role) || Arg::isLateDef(role);
57 });
58 return result;
59}
60
61bool Inst::needsPadding(Inst* prevInst, Inst* nextInst)
62{
63 bool result = prevInst && nextInst && prevInst->hasLateUseOrDef() && nextInst->hasEarlyDef();
64 return result;
65}
66
67bool Inst::hasArgEffects()
68{
69 bool result = false;
70 forEachArg(
71 [&] (Arg&, Arg::Role role, Bank, Width) {
72 if (Arg::isAnyDef(role))
73 result = true;
74 });
75 return result;
76}
77
78unsigned Inst::jsHash() const
79{
80 // FIXME: This should do something for flags.
81 // https://bugs.webkit.org/show_bug.cgi?id=162751
82 unsigned result = static_cast<unsigned>(kind.opcode);
83
84 for (const Arg& arg : args)
85 result += arg.jsHash();
86
87 return result;
88}
89
90void Inst::dump(PrintStream& out) const
91{
92 out.print(kind, " ", listDump(args));
93 if (origin) {
94 if (args.size())
95 out.print(", ");
96 out.print(*origin);
97 }
98}
99
100} } } // namespace JSC::B3::Air
101
102#endif // ENABLE(B3_JIT)
103