1/*
2 * Copyright (C) 2019 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(WEBASSEMBLY)
29
30#include "ExecutionCounter.h"
31#include "Options.h"
32#include <wtf/HashMap.h>
33#include <bytecode/InstructionStream.h>
34
35namespace JSC { namespace Wasm {
36
37class LLIntTierUpCounter : public BaselineExecutionCounter {
38 WTF_MAKE_NONCOPYABLE(LLIntTierUpCounter);
39
40public:
41 enum class CompilationStatus : uint8_t {
42 NotCompiled,
43 Compiling,
44 Compiled,
45 };
46
47 LLIntTierUpCounter()
48 {
49 optimizeAfterWarmUp();
50 }
51
52 void optimizeAfterWarmUp()
53 {
54 if (Options::wasmLLIntTiersUpToBBQ())
55 setNewThreshold(Options::thresholdForBBQOptimizeAfterWarmUp(), nullptr);
56 else
57 setNewThreshold(Options::thresholdForOMGOptimizeAfterWarmUp(), nullptr);
58 }
59
60 bool checkIfOptimizationThresholdReached()
61 {
62 return checkIfThresholdCrossedAndSet(nullptr);
63 }
64
65 void optimizeSoon()
66 {
67 if (Options::wasmLLIntTiersUpToBBQ())
68 setNewThreshold(Options::thresholdForBBQOptimizeSoon(), nullptr);
69 else
70 setNewThreshold(Options::thresholdForOMGOptimizeSoon(), nullptr);
71 }
72
73 struct OSREntryData {
74 uint32_t loopIndex;
75 Vector<VirtualRegister> values;
76 };
77
78 void addOSREntryDataForLoop(InstructionStream::Offset, OSREntryData&&);
79
80 const OSREntryData& osrEntryDataForLoop(InstructionStream::Offset) const;
81
82 Lock m_lock;
83 CompilationStatus m_compilationStatus { CompilationStatus::NotCompiled };
84 CompilationStatus m_loopCompilationStatus { CompilationStatus::NotCompiled };
85 HashMap<InstructionStream::Offset, OSREntryData> m_osrEntryData;
86};
87
88} } // namespace JSC::Wasm
89
90#endif // ENABLE(WEBASSEMBLY)
91