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BasicBlockLocation.h
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72 lines (62 loc) · 2.58 KB
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/*
* Copyright (C) 2014-2023 Apple Inc. All rights reserved.
* Copyright (C) 2014 Saam Barati. <saambarati1@gmail.com>
*
* 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
#include <JavaScriptCore/CPU.h>
#include <JavaScriptCore/MacroAssembler.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
namespace JSC {
class CCallHelpers;
class LLIntOffsetsExtractor;
class BasicBlockLocation {
WTF_MAKE_TZONE_ALLOCATED(BasicBlockLocation);
public:
typedef std::pair<int, int> Gap;
BasicBlockLocation(int startOffset = -1, int endOffset = -1);
int startOffset() const { return m_startOffset; }
int endOffset() const { return m_endOffset; }
void setStartOffset(int startOffset) { m_startOffset = startOffset; }
void setEndOffset(int endOffset) { m_endOffset = endOffset; }
bool hasExecuted() const { return m_executionCount > 0; }
size_t executionCount() const { return m_executionCount; }
void insertGap(int, int);
Vector<Gap> getExecutedRanges() const;
JS_EXPORT_PRIVATE void dumpData() const;
#if ENABLE(JIT)
#if USE(JSVALUE64)
void emitExecuteCode(CCallHelpers&) const;
#else
void emitExecuteCode(CCallHelpers&, MacroAssembler::RegisterID scratch) const;
#endif
#endif
private:
friend class LLIntOffsetsExtractor;
int m_startOffset;
int m_endOffset;
Vector<Gap> m_gaps;
UCPURegister m_executionCount;
};
} // namespace JSC