1/*
2 * Copyright (C) 2013-2016 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#pragma once
27
28#if ENABLE(FTL_JIT)
29
30#include "B3Procedure.h"
31#include "DFGCommon.h"
32#include "DFGGraph.h"
33#include "FTLAbbreviatedTypes.h"
34#include "FTLGeneratedFunction.h"
35#include "FTLJITCode.h"
36#include "FTLJITFinalizer.h"
37#include <wtf/Box.h>
38#include <wtf/Noncopyable.h>
39
40namespace JSC {
41
42namespace B3 {
43class PatchpointValue;
44class StackSlot;
45} // namespace B3
46
47namespace FTL {
48
49class PatchpointExceptionHandle;
50
51inline bool verboseCompilationEnabled()
52{
53 return DFG::verboseCompilationEnabled(DFG::FTLMode);
54}
55
56inline bool shouldDumpDisassembly()
57{
58 return DFG::shouldDumpDisassembly(DFG::FTLMode);
59}
60
61class State {
62 WTF_MAKE_NONCOPYABLE(State);
63
64public:
65 State(DFG::Graph& graph);
66 ~State();
67
68 VM& vm() { return graph.m_vm; }
69
70 // None of these things is owned by State. It is the responsibility of
71 // FTL phases to properly manage the lifecycle of the module and function.
72 DFG::Graph& graph;
73 std::unique_ptr<B3::Procedure> proc;
74 bool allocationFailed { false }; // Throw out the compilation once B3 returns.
75 RefPtr<JITCode> jitCode;
76 GeneratedFunction generatedFunction;
77 JITFinalizer* finalizer;
78 // Top-level exception handler. Jump here if you know that you have to genericUnwind() and there
79 // are no applicable catch blocks anywhere in the Graph.
80 RefPtr<PatchpointExceptionHandle> defaultExceptionHandle;
81 Box<CCallHelpers::Label> exceptionHandler { Box<CCallHelpers::Label>::create() };
82 B3::StackSlot* capturedValue { nullptr };
83};
84
85} } // namespace JSC::FTL
86
87#endif // ENABLE(FTL_JIT)
88