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/*
* Copyright (C) 2011-2015 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
#include "CodeBlock.h"
#include "DFGCommon.h"
#include "Options.h"
namespace JSC { namespace DFG {
#if ENABLE(DFG_JIT)
// Fast check functions; if they return true it is still necessary to
// check opcodes.
bool isSupported();
bool isSupportedForInlining(CodeBlock*);
bool mightCompileEval(CodeBlock*);
bool mightCompileProgram(CodeBlock*);
bool mightCompileFunctionForCall(CodeBlock*);
bool mightCompileFunctionForConstruct(CodeBlock*);
bool mightInlineFunctionForCall(JITType, CodeBlock*);
bool mightInlineFunctionForClosureCall(JITType, CodeBlock*);
bool mightInlineFunctionForConstruct(JITType, CodeBlock*);
bool canUseOSRExitFuzzing(CodeBlock*);
#else // ENABLE(DFG_JIT)
inline bool mightCompileEval(CodeBlock*) { return false; }
inline bool mightCompileProgram(CodeBlock*) { return false; }
inline bool mightCompileFunctionForCall(CodeBlock*) { return false; }
inline bool mightCompileFunctionForConstruct(CodeBlock*) { return false; }
inline bool mightInlineFunctionForCall(JITType, CodeBlock*) { return false; }
inline bool mightInlineFunctionForClosureCall(JITType, CodeBlock*) { return false; }
inline bool mightInlineFunctionForConstruct(JITType, CodeBlock*) { return false; }
inline bool canUseOSRExitFuzzing(CodeBlock*) { return false; }
#endif // ENABLE(DFG_JIT)
inline CapabilityLevel evalCapabilityLevel(CodeBlock* codeBlock)
{
if (!mightCompileEval(codeBlock))
return CannotCompile;
return CanCompileAndInline;
}
inline CapabilityLevel programCapabilityLevel(CodeBlock* codeBlock)
{
if (!mightCompileProgram(codeBlock))
return CannotCompile;
return CanCompileAndInline;
}
inline CapabilityLevel functionCapabilityLevel(bool mightCompile, bool mightInline, CapabilityLevel computedCapabilityLevel)
{
if (mightCompile && mightInline)
return leastUpperBound(CanCompileAndInline, computedCapabilityLevel);
if (mightCompile && !mightInline)
return leastUpperBound(CanCompile, computedCapabilityLevel);
if (!mightCompile)
return CannotCompile;
RELEASE_ASSERT_NOT_REACHED();
return CannotCompile;
}
inline CapabilityLevel functionForCallCapabilityLevel(JITType jitType, CodeBlock* codeBlock)
{
return functionCapabilityLevel(
mightCompileFunctionForCall(codeBlock),
mightInlineFunctionForCall(jitType, codeBlock),
CanCompileAndInline);
}
inline CapabilityLevel functionForConstructCapabilityLevel(JITType jitType, CodeBlock* codeBlock)
{
return functionCapabilityLevel(
mightCompileFunctionForConstruct(codeBlock),
mightInlineFunctionForConstruct(jitType, codeBlock),
CanCompileAndInline);
}
inline CapabilityLevel inlineFunctionForCallCapabilityLevel(JITType jitType, CodeBlock* codeBlock)
{
if (!mightInlineFunctionForCall(jitType, codeBlock))
return CannotCompile;
return CanCompileAndInline;
}
inline CapabilityLevel inlineFunctionForClosureCallCapabilityLevel(JITType jitType, CodeBlock* codeBlock)
{
if (!mightInlineFunctionForClosureCall(jitType, codeBlock))
return CannotCompile;
return CanCompileAndInline;
}
inline CapabilityLevel inlineFunctionForConstructCapabilityLevel(JITType jitType, CodeBlock* codeBlock)
{
if (!mightInlineFunctionForConstruct(jitType, codeBlock))
return CannotCompile;
return CanCompileAndInline;
}
inline bool mightInlineFunctionFor(JITType jitType, CodeBlock* codeBlock, CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return mightInlineFunctionForCall(jitType, codeBlock);
ASSERT(kind == CodeForConstruct);
return mightInlineFunctionForConstruct(jitType, codeBlock);
}
inline bool mightCompileFunctionFor(CodeBlock* codeBlock, CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return mightCompileFunctionForCall(codeBlock);
ASSERT(kind == CodeForConstruct);
return mightCompileFunctionForConstruct(codeBlock);
}
inline bool mightInlineFunction(JITType jitType, CodeBlock* codeBlock)
{
return mightInlineFunctionFor(jitType, codeBlock, codeBlock->specializationKind());
}
inline CapabilityLevel inlineFunctionForCapabilityLevel(JITType jitType, CodeBlock* codeBlock, CodeSpecializationKind kind, bool isClosureCall)
{
if (isClosureCall) {
if (kind != CodeForCall)
return CannotCompile;
return inlineFunctionForClosureCallCapabilityLevel(jitType, codeBlock);
}
if (kind == CodeForCall)
return inlineFunctionForCallCapabilityLevel(jitType, codeBlock);
ASSERT(kind == CodeForConstruct);
return inlineFunctionForConstructCapabilityLevel(jitType, codeBlock);
}
inline bool isSmallEnoughToInlineCodeInto(CodeBlock* codeBlock)
{
return codeBlock->bytecodeCost() <= Options::maximumInliningCallerBytecodeCost();
}
} } // namespace JSC::DFG
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