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/*
* Copyright (C) 2012-2017 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 "MethodOfGettingAValueProfile.h"
#if ENABLE(DFG_JIT)
#include "ArithProfile.h"
#include "CCallHelpers.h"
#include "CodeBlock.h"
#include "JSCInlines.h"
namespace JSC {
MethodOfGettingAValueProfile MethodOfGettingAValueProfile::fromLazyOperand(
CodeBlock* codeBlock, const LazyOperandValueProfileKey& key)
{
MethodOfGettingAValueProfile result;
result.m_kind = LazyOperand;
result.u.lazyOperand.codeBlock = codeBlock;
result.u.lazyOperand.bytecodeOffset = key.bytecodeOffset();
result.u.lazyOperand.operand = key.operand().offset();
return result;
}
void MethodOfGettingAValueProfile::emitReportValue(CCallHelpers& jit, JSValueRegs regs) const
{
switch (m_kind) {
case None:
return;
case Ready:
jit.storeValue(regs, u.profile->specFailBucket(0));
return;
case LazyOperand: {
LazyOperandValueProfileKey key(u.lazyOperand.bytecodeOffset, VirtualRegister(u.lazyOperand.operand));
ConcurrentJSLocker locker(u.lazyOperand.codeBlock->m_lock);
LazyOperandValueProfile* profile =
u.lazyOperand.codeBlock->lazyOperandValueProfiles(locker).add(locker, key);
jit.storeValue(regs, profile->specFailBucket(0));
return;
}
case ArithProfileReady: {
u.arithProfile->emitObserveResult(jit, regs, DoNotHaveTagRegisters);
return;
} }
RELEASE_ASSERT_NOT_REACHED();
}
void MethodOfGettingAValueProfile::reportValue(JSValue value)
{
switch (m_kind) {
case None:
return;
case Ready:
*u.profile->specFailBucket(0) = JSValue::encode(value);
return;
case LazyOperand: {
LazyOperandValueProfileKey key(u.lazyOperand.bytecodeOffset, VirtualRegister(u.lazyOperand.operand));
ConcurrentJSLocker locker(u.lazyOperand.codeBlock->m_lock);
LazyOperandValueProfile* profile =
u.lazyOperand.codeBlock->lazyOperandValueProfiles(locker).add(locker, key);
*profile->specFailBucket(0) = JSValue::encode(value);
return;
}
case ArithProfileReady: {
u.arithProfile->observeResult(value);
return;
} }
RELEASE_ASSERT_NOT_REACHED();
}
} // namespace JSC
#endif // ENABLE(DFG_JIT)