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/*
* Copyright (C) 2012 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.
*/
#ifndef JITDriver_h
#define JITDriver_h
#include <wtf/Platform.h>
#if ENABLE(JIT)
#include "BytecodeGenerator.h"
#include "DFGDriver.h"
#include "JIT.h"
#include "LLIntEntrypoints.h"
namespace JSC {
template<typename CodeBlockType>
inline bool jitCompileIfAppropriate(ExecState* exec, OwnPtr<CodeBlockType>& codeBlock, JITCode& jitCode, JITCode::JITType jitType, unsigned bytecodeIndex, JITCompilationEffort effort)
{
JSGlobalData& globalData = exec->globalData();
if (jitType == codeBlock->getJITType())
return true;
if (!globalData.canUseJIT())
return true;
codeBlock->unlinkIncomingCalls();
JITCode oldJITCode = jitCode;
bool dfgCompiled = false;
if (jitType == JITCode::DFGJIT)
dfgCompiled = DFG::tryCompile(exec, codeBlock.get(), jitCode, bytecodeIndex);
if (dfgCompiled) {
if (codeBlock->alternative())
codeBlock->alternative()->unlinkIncomingCalls();
} else {
if (codeBlock->alternative()) {
codeBlock = static_pointer_cast<CodeBlockType>(codeBlock->releaseAlternative());
jitCode = oldJITCode;
return false;
}
jitCode = JIT::compile(&globalData, codeBlock.get(), effort);
if (!jitCode) {
jitCode = oldJITCode;
return false;
}
}
codeBlock->setJITCode(jitCode, MacroAssemblerCodePtr());
return true;
}
inline bool jitCompileFunctionIfAppropriate(ExecState* exec, OwnPtr<FunctionCodeBlock>& codeBlock, JITCode& jitCode, MacroAssemblerCodePtr& jitCodeWithArityCheck, WriteBarrier<SharedSymbolTable>& symbolTable, JITCode::JITType jitType, unsigned bytecodeIndex, JITCompilationEffort effort)
{
JSGlobalData& globalData = exec->globalData();
if (jitType == codeBlock->getJITType())
return true;
if (!globalData.canUseJIT())
return true;
codeBlock->unlinkIncomingCalls();
JITCode oldJITCode = jitCode;
MacroAssemblerCodePtr oldJITCodeWithArityCheck = jitCodeWithArityCheck;
bool dfgCompiled = false;
if (jitType == JITCode::DFGJIT)
dfgCompiled = DFG::tryCompileFunction(exec, codeBlock.get(), jitCode, jitCodeWithArityCheck, bytecodeIndex);
if (dfgCompiled) {
if (codeBlock->alternative())
codeBlock->alternative()->unlinkIncomingCalls();
} else {
if (codeBlock->alternative()) {
codeBlock = static_pointer_cast<FunctionCodeBlock>(codeBlock->releaseAlternative());
symbolTable.set(exec->globalData(), codeBlock->ownerExecutable(), codeBlock->symbolTable());
jitCode = oldJITCode;
jitCodeWithArityCheck = oldJITCodeWithArityCheck;
return false;
}
jitCode = JIT::compile(&globalData, codeBlock.get(), effort, &jitCodeWithArityCheck);
if (!jitCode) {
jitCode = oldJITCode;
jitCodeWithArityCheck = oldJITCodeWithArityCheck;
return false;
}
}
codeBlock->setJITCode(jitCode, jitCodeWithArityCheck);
return true;
}
} // namespace JSC
#endif // ENABLE(JIT)
#endif // JITDriver_h
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