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/*
* Copyright (C) 2019-2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(WEBASSEMBLY)
#include "ExecutionCounter.h"
#include "InstructionStream.h"
#include "Options.h"
#include "VirtualRegister.h"
#include <wtf/FixedVector.h>
#include <wtf/HashMap.h>
namespace JSC { namespace Wasm {
class LLIntTierUpCounter : public BaselineExecutionCounter {
WTF_MAKE_NONCOPYABLE(LLIntTierUpCounter);
public:
enum class CompilationStatus : uint8_t {
NotCompiled = 0,
Compiling,
Compiled,
};
struct OSREntryData {
uint32_t loopIndex;
Vector<VirtualRegister> values;
};
LLIntTierUpCounter(UncheckedKeyHashMap<WasmInstructionStream::Offset, OSREntryData>&& osrEntryData)
: m_osrEntryData(WTFMove(osrEntryData))
{
optimizeAfterWarmUp();
m_compilationStatus.fill(CompilationStatus::NotCompiled);
m_loopCompilationStatus.fill(CompilationStatus::NotCompiled);
}
void optimizeAfterWarmUp()
{
setNewThreshold(Options::thresholdForBBQOptimizeAfterWarmUp());
ASSERT(Options::useWasmLLInt() || checkIfOptimizationThresholdReached());
}
bool checkIfOptimizationThresholdReached()
{
return checkIfThresholdCrossedAndSet(nullptr);
}
void optimizeSoon()
{
setNewThreshold(Options::thresholdForBBQOptimizeSoon());
}
const OSREntryData& osrEntryDataForLoop(WasmInstructionStream::Offset) const;
ALWAYS_INLINE CompilationStatus compilationStatus(MemoryMode mode) WTF_REQUIRES_LOCK(m_lock) { return m_compilationStatus[static_cast<MemoryModeType>(mode)]; }
ALWAYS_INLINE void setCompilationStatus(MemoryMode mode, CompilationStatus status) WTF_REQUIRES_LOCK(m_lock) { m_compilationStatus[static_cast<MemoryModeType>(mode)] = status; }
ALWAYS_INLINE CompilationStatus loopCompilationStatus(MemoryMode mode) WTF_REQUIRES_LOCK(m_lock) { return m_loopCompilationStatus[static_cast<MemoryModeType>(mode)]; }
ALWAYS_INLINE void setLoopCompilationStatus(MemoryMode mode, CompilationStatus status) WTF_REQUIRES_LOCK(m_lock) { m_loopCompilationStatus[static_cast<MemoryModeType>(mode)] = status; }
void resetAndOptimizeSoon(MemoryMode mode);
Lock m_lock;
private:
std::array<CompilationStatus, numberOfMemoryModes> m_compilationStatus WTF_GUARDED_BY_LOCK(m_lock);
std::array<CompilationStatus, numberOfMemoryModes> m_loopCompilationStatus WTF_GUARDED_BY_LOCK(m_lock);
const UncheckedKeyHashMap<WasmInstructionStream::Offset, OSREntryData> m_osrEntryData;
};
} } // namespace JSC::Wasm
#endif // ENABLE(WEBASSEMBLY)
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