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/*
* Copyright (C) 2011-2020 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.
*/
#include "config.h"
#include "DFGCapabilities.h"
#if ENABLE(DFG_JIT)
#include "CodeBlock.h"
#include "DFGCommon.h"
#include "ExecutableBaseInlines.h"
#include "JSCellInlines.h"
#include "Options.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC { namespace DFG {
bool isSupported()
{
return Options::useDFGJIT() && MacroAssembler::supportsFloatingPoint();
}
bool isSupportedForInlining(CodeBlock* codeBlock)
{
return codeBlock->ownerExecutable()->isInliningCandidate();
}
bool mightCompileEval(CodeBlock* codeBlock)
{
return isSupported()
&& codeBlock->bytecodeCost() <= Options::maximumOptimizationCandidateBytecodeCost()
&& codeBlock->ownerExecutable()->isOkToOptimize();
}
bool mightCompileProgram(CodeBlock* codeBlock)
{
return isSupported()
&& codeBlock->bytecodeCost() <= Options::maximumOptimizationCandidateBytecodeCost()
&& codeBlock->ownerExecutable()->isOkToOptimize();
}
bool mightCompileFunctionForCall(CodeBlock* codeBlock)
{
return isSupported()
&& codeBlock->bytecodeCost() <= Options::maximumOptimizationCandidateBytecodeCost()
&& codeBlock->ownerExecutable()->isOkToOptimize();
}
bool mightCompileFunctionForConstruct(CodeBlock* codeBlock)
{
return isSupported()
&& codeBlock->bytecodeCost() <= Options::maximumOptimizationCandidateBytecodeCost()
&& codeBlock->ownerExecutable()->isOkToOptimize();
}
bool mightInlineFunctionForCall(JITType jitType, CodeBlock* codeBlock)
{
if (codeBlock->ownerExecutable()->inlineAttribute() != InlineAttribute::Always) {
if (jitType == JITType::DFGJIT) {
if (codeBlock->bytecodeCost() > Options::maximumFunctionForCallInlineCandidateBytecodeCostForDFG())
return false;
} else {
if (codeBlock->bytecodeCost() > Options::maximumFunctionForCallInlineCandidateBytecodeCostForFTL())
return false;
}
}
return isSupportedForInlining(codeBlock);
}
bool mightInlineFunctionForClosureCall(JITType jitType, CodeBlock* codeBlock)
{
if (codeBlock->ownerExecutable()->inlineAttribute() != InlineAttribute::Always) {
if (jitType == JITType::DFGJIT) {
if (codeBlock->bytecodeCost() > Options::maximumFunctionForClosureCallInlineCandidateBytecodeCostForDFG())
return false;
} else {
if (codeBlock->bytecodeCost() > Options::maximumFunctionForClosureCallInlineCandidateBytecodeCostForFTL())
return false;
}
}
return isSupportedForInlining(codeBlock);
}
bool mightInlineFunctionForConstruct(JITType jitType, CodeBlock* codeBlock)
{
if (codeBlock->ownerExecutable()->inlineAttribute() != InlineAttribute::Always) {
if (jitType == JITType::DFGJIT) {
if (codeBlock->bytecodeCost() > Options::maximumFunctionForConstructInlineCandidateBytecodeCostForDFG())
return false;
} else {
if (codeBlock->bytecodeCost() > Options::maximumFunctionForConstructInlineCandidateBytecodeCostForFTL())
return false;
}
}
return isSupportedForInlining(codeBlock);
}
bool canUseOSRExitFuzzing(CodeBlock* codeBlock)
{
return codeBlock->ownerExecutable()->canUseOSRExitFuzzing();
}
static bool verboseCapabilities()
{
return verboseCompilationEnabled() || Options::verboseDFGFailure();
}
inline void debugFail(CodeBlock* codeBlock, OpcodeID opcodeID, CapabilityLevel result)
{
dataLogLnIf(verboseCapabilities() && !canCompile(result), "DFG rejecting opcode in ", *codeBlock, " because of opcode ", opcodeNames[opcodeID]);
}
} } // namespace JSC::DFG
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif
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