WebKit/Source/JavaScriptCore/jit/JITInlineCacheGenerator.h at main · WebKit/WebKit · GitHub

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* 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 <wtf/Platform.h>

#if ENABLE(JIT)

#include <JavaScriptCore/AssemblyHelpers.h>

#include <JavaScriptCore/CCallHelpers.h>

#include <JavaScriptCore/CacheableIdentifier.h>

#include <JavaScriptCore/CodeOrigin.h>

#include <JavaScriptCore/JITOperationValidation.h>

#include <JavaScriptCore/JITOperations.h>

#include <JavaScriptCore/JSCJSValue.h>

#include <JavaScriptCore/RegisterSet.h>

namespace JSC {

namespace DFG {

class JITCompiler;

struct UnlinkedPropertyInlineCache;

}

class CallSiteIndex;

class CodeBlock;

class JIT;

class PropertyInlineCache;

class RepatchingPropertyInlineCache;

struct UnlinkedPropertyInlineCache;

struct BaselineUnlinkedPropertyInlineCache;

enum class AccessType : int8_t;

enum class CacheType : int8_t;

enum class JITType : uint8_t;

using CompileTimePropertyInlineCache = Variant<PropertyInlineCache*, BaselineUnlinkedPropertyInlineCache*, DFG::UnlinkedPropertyInlineCache*>;

class JITInlineCacheGenerator {

protected:

JITInlineCacheGenerator() = default;

JITInlineCacheGenerator(CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, AccessType);

public:

PropertyInlineCache* propertyCache() const { return m_propertyCache; }

void reportSlowPathCall(CCallHelpers::Label slowPathBegin, CCallHelpers::Call call)

{

m_slowPathBegin = slowPathBegin;

m_slowPathCall = call;

}

CCallHelpers::Label slowPathBegin() const { return m_slowPathBegin; }

void NODELETE finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer,

CodeLocationLabel<JITStubRoutinePtrTag> start);

JSC::UnlinkedPropertyInlineCache* m_unlinkedPropertyCache { nullptr };

template<typename PropertyInlineCache>

static void setUpPropertyInlineCacheImpl(PropertyInlineCache& propertyCache, CodeBlock* codeBlock, AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters)

{

propertyCache.accessType = accessType;

propertyCache.preconfiguredCacheType = cacheType;

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, BaselineUnlinkedPropertyInlineCache>) {

propertyCache.bytecodeIndex = codeOrigin.bytecodeIndex();

UNUSED_PARAM(callSiteIndex);

} else {

propertyCache.codeOrigin = codeOrigin;

propertyCache.callSiteIndex = callSiteIndex;

}

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

downcast<RepatchingPropertyInlineCache>(propertyCache).m_usedRegisters = usedRegisters.toScalarRegisterSet();

if (codeOrigin.inlineCallFrame())

propertyCache.m_globalObject = baselineCodeBlockForInlineCallFrame(codeOrigin.inlineCallFrame())->globalObject();

else

propertyCache.m_globalObject = codeBlock->globalObject();

} else {

UNUSED_PARAM(codeBlock);

UNUSED_PARAM(usedRegisters);

}

AccessType accessType() const { return m_accessType; }

protected:

void generateDataICFastPath(CCallHelpers&, GPRReg propertyCacheGPR);

PropertyInlineCache* m_propertyCache { nullptr };

AccessType m_accessType;

public:

CCallHelpers::Label m_start;

CCallHelpers::Label m_done;

CCallHelpers::Label m_slowPathBegin;

CCallHelpers::Call m_slowPathCall;

};

class JITByIdGenerator : public JITInlineCacheGenerator {

protected:

JITByIdGenerator() = default;

JITByIdGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, AccessType,

JSValueRegs base, JSValueRegs value);

public:

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.isSet());

return m_slowPathJump;

}

void finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCacheImpl(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier propertyName,

JSValueRegs baseRegs, JSValueRegs valueRegs, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

propertyCache.m_identifier = propertyName;

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.valueGPR = valueRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(valueRegs);

UNUSED_PARAM(propertyCacheGPR);

}

protected:

void generateFastCommon(CCallHelpers&, size_t size);

void emitDataICSlowPath(CCallHelpers&, GPRReg propertyCacheGPR);

JSValueRegs m_base;

JSValueRegs m_value;

public:

CCallHelpers::Jump m_slowPathJump;

CCallHelpers::JumpList m_dataICHandlerCases;

};

class JITGetByIdGenerator final : public JITByIdGenerator {

public:

JITGetByIdGenerator() = default;

JITGetByIdGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier,

JSValueRegs base, JSValueRegs value, GPRReg propertyCacheGPR, AccessType, CacheType);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

void generateDataICSlowPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier propertyName,

JSValueRegs baseRegs, JSValueRegs valueRegs, GPRReg propertyCacheGPR)

{

JITByIdGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters, propertyName, baseRegs, valueRegs, propertyCacheGPR);

}

private:

bool m_isLengthAccess;

CacheType m_cacheType;

};

class JITGetByIdWithThisGenerator final : public JITByIdGenerator {

public:

JITGetByIdWithThisGenerator() = default;

JITGetByIdWithThisGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier,

JSValueRegs value, JSValueRegs base, JSValueRegs thisRegs, GPRReg propertyCacheGPR);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

void generateDataICSlowPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier propertyName,

JSValueRegs valueRegs, JSValueRegs baseRegs, JSValueRegs thisRegs, GPRReg propertyCacheGPR)

{

JITByIdGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters, propertyName, baseRegs, valueRegs, propertyCacheGPR);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>)

downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers.extraGPR = thisRegs.payloadGPR();

else

UNUSED_PARAM(thisRegs);

}

};

class JITPutByIdGenerator final : public JITByIdGenerator {

public:

JITPutByIdGenerator() = default;

JITPutByIdGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier,

JSValueRegs base, JSValueRegs value, GPRReg propertyCacheGPR, GPRReg scratch, AccessType);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

void generateDataICSlowPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier propertyName,

JSValueRegs baseRegs, JSValueRegs valueRegs, GPRReg propertyCacheGPR, GPRReg scratchGPR)

{

JITByIdGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters, propertyName, baseRegs, valueRegs, propertyCacheGPR);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>)

downcast<RepatchingPropertyInlineCache>(propertyCache).m_usedRegisters.remove(scratchGPR);

else

UNUSED_PARAM(scratchGPR);

}

};

class JITPutByValGenerator final : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITPutByValGenerator() = default;

JITPutByValGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters,

JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

JSValueRegs baseRegs, JSValueRegs propertyRegs, JSValueRegs valueRegs, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.extraGPR = propertyRegs.payloadGPR();

registers.valueGPR = valueRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

registers.arrayProfileGPR = arrayProfileGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(propertyRegs);

UNUSED_PARAM(valueRegs);

UNUSED_PARAM(propertyCacheGPR);

UNUSED_PARAM(arrayProfileGPR);

}

JSValueRegs m_base;

JSValueRegs m_value;

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITDelByValGenerator final : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITDelByValGenerator() = default;

JITDelByValGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters,

JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

JSValueRegs baseRegs, JSValueRegs propertyRegs, JSValueRegs resultRegs, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.extraGPR = propertyRegs.payloadGPR();

registers.valueGPR = resultRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(propertyRegs);

UNUSED_PARAM(resultRegs);

UNUSED_PARAM(propertyCacheGPR);

}

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITDelByIdGenerator final : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITDelByIdGenerator() = default;

JITDelByIdGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters, CacheableIdentifier,

JSValueRegs base, JSValueRegs result, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier propertyName,

JSValueRegs baseRegs, JSValueRegs resultRegs, GPRReg propertyCacheGPR)

{

JITByIdGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters, propertyName, baseRegs, resultRegs, propertyCacheGPR);

}

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITInByValGenerator : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITInByValGenerator() = default;

JITInByValGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters,

JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

JSValueRegs baseRegs, JSValueRegs propertyRegs, JSValueRegs resultRegs, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.extraGPR = propertyRegs.payloadGPR();

registers.valueGPR = resultRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

registers.arrayProfileGPR = arrayProfileGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(propertyRegs);

UNUSED_PARAM(resultRegs);

UNUSED_PARAM(propertyCacheGPR);

UNUSED_PARAM(arrayProfileGPR);

}

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITInByIdGenerator final : public JITByIdGenerator {

public:

JITInByIdGenerator() = default;

JITInByIdGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier,

JSValueRegs base, JSValueRegs value, GPRReg propertyCacheGPR);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

void generateDataICSlowPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier propertyName,

JSValueRegs baseRegs, JSValueRegs valueRegs, GPRReg propertyCacheGPR)

{

JITByIdGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters, propertyName, baseRegs, valueRegs, propertyCacheGPR);

}

};

class JITInstanceOfGenerator final : public JITInlineCacheGenerator {

public:

using Base = JITInlineCacheGenerator;

JITInstanceOfGenerator() = default;

JITInstanceOfGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, const RegisterSet& usedRegisters, GPRReg result,

GPRReg value, GPRReg prototype, GPRReg propertyCacheGPR,

bool prototypeIsKnownObject = false);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

GPRReg resultGPR, GPRReg valueGPR, GPRReg prototypeGPR, GPRReg propertyCacheGPR, bool prototypeIsKnownObject)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

propertyCache.prototypeIsKnownObject = prototypeIsKnownObject;

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = valueGPR;

registers.valueGPR = resultGPR;

registers.extraGPR = prototypeGPR;

registers.propertyCacheGPR = propertyCacheGPR;

} else {

UNUSED_PARAM(valueGPR);

UNUSED_PARAM(resultGPR);

UNUSED_PARAM(prototypeGPR);

UNUSED_PARAM(propertyCacheGPR);

}

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITGetByValGenerator final : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITGetByValGenerator() = default;

JITGetByValGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters,

JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

void generateEmptyPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

JSValueRegs baseRegs, JSValueRegs propertyRegs, JSValueRegs resultRegs, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.extraGPR = propertyRegs.payloadGPR();

registers.valueGPR = resultRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

registers.arrayProfileGPR = arrayProfileGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(propertyRegs);

UNUSED_PARAM(resultRegs);

UNUSED_PARAM(propertyCacheGPR);

UNUSED_PARAM(arrayProfileGPR);

}

JSValueRegs m_base;

JSValueRegs m_result;

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITGetByValWithThisGenerator final : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITGetByValWithThisGenerator() = default;

JITGetByValWithThisGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters,

JSValueRegs base, JSValueRegs property, JSValueRegs thisRegs, JSValueRegs result, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

void generateEmptyPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

JSValueRegs baseRegs, JSValueRegs propertyRegs, JSValueRegs thisRegs, JSValueRegs resultRegs, GPRReg arrayProfileGPR, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.extraGPR = thisRegs.payloadGPR();

registers.valueGPR = resultRegs.payloadGPR();

registers.extra2GPR = propertyRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

registers.arrayProfileGPR = arrayProfileGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(propertyRegs);

UNUSED_PARAM(thisRegs);

UNUSED_PARAM(resultRegs);

UNUSED_PARAM(propertyCacheGPR);

UNUSED_PARAM(arrayProfileGPR);

}

JSValueRegs m_base;

JSValueRegs m_result;

CCallHelpers::PatchableJump m_slowPathJump;

};

class JITPrivateBrandAccessGenerator final : public JITInlineCacheGenerator {

using Base = JITInlineCacheGenerator;

public:

JITPrivateBrandAccessGenerator() = default;

JITPrivateBrandAccessGenerator(

CodeBlock*, CompileTimePropertyInlineCache, JITType, CodeOrigin, CallSiteIndex, AccessType, const RegisterSet& usedRegisters,

JSValueRegs base, JSValueRegs brand, GPRReg propertyCacheGPR);

CCallHelpers::Jump slowPathJump() const

{

ASSERT(m_slowPathJump.m_jump.isSet());

return m_slowPathJump.m_jump;

}

void finalize(

LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);

void generateFastPath(CCallHelpers&);

void generateDataICFastPath(CCallHelpers&);

template<typename PropertyInlineCache>

static void setUpPropertyInlineCache(PropertyInlineCache& propertyCache, CodeBlock* codeBlock,

AccessType accessType, CacheType cacheType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters,

JSValueRegs baseRegs, JSValueRegs brandRegs, GPRReg propertyCacheGPR)

{

JITInlineCacheGenerator::setUpPropertyInlineCacheImpl(propertyCache, codeBlock, accessType, cacheType, codeOrigin, callSiteIndex, usedRegisters);

if constexpr (std::is_same_v<std::decay_t<PropertyInlineCache>, JSC::PropertyInlineCache>) {

auto& registers = downcast<RepatchingPropertyInlineCache>(propertyCache).m_registers;

registers.baseGPR = baseRegs.payloadGPR();

registers.extraGPR = brandRegs.payloadGPR();

registers.propertyCacheGPR = propertyCacheGPR;

} else {

UNUSED_PARAM(baseRegs);

UNUSED_PARAM(brandRegs);

UNUSED_PARAM(propertyCacheGPR);

}

CCallHelpers::PatchableJump m_slowPathJump;

};

template<typename VectorType>

void finalizeInlineCaches(VectorType& vector, LinkBuffer& fastPath, LinkBuffer& slowPath)

{

for (auto& entry : vector)

entry.finalize(fastPath, slowPath);

}

template<typename VectorType>

void finalizeInlineCaches(VectorType& vector, LinkBuffer& linkBuffer)

{

finalizeInlineCaches(vector, linkBuffer, linkBuffer);

}

} // namespace JSC

#endif // ENABLE(JIT)

WebKit/Source/JavaScriptCore/jit/JITInlineCacheGenerator.h at main · WebKit/WebKit · GitHub

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