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/*
* Copyright (C) 2013-2019 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 "JITInlineCacheGenerator.h"
#if ENABLE(JIT)
#include "BaselineJITRegisters.h"
#include "CCallHelpers.h"
#include "CacheableIdentifierInlines.h"
#include "CodeBlock.h"
#include "DFGJITCompiler.h"
#include "InlineAccess.h"
#include "JITInlines.h"
#include "LinkBuffer.h"
#include "StructureStubInfo.h"
namespace JSC {
JITInlineCacheGenerator::JITInlineCacheGenerator(
CodeBlock*, CompileTimeStructureStubInfo stubInfo, JITType, CodeOrigin, AccessType)
{
std::visit(WTF::makeVisitor(
[&](StructureStubInfo* stubInfo) {
m_stubInfo = stubInfo;
},
[&](BaselineUnlinkedStructureStubInfo* stubInfo) {
m_unlinkedStubInfo = stubInfo;
}
#if ENABLE(DFG_JIT)
,
[&](DFG::UnlinkedStructureStubInfo* stubInfo) {
m_unlinkedStubInfo = stubInfo;
}
#endif
), stubInfo);
}
void JITInlineCacheGenerator::finalize(
LinkBuffer& fastPath, LinkBuffer& slowPath, CodeLocationLabel<JITStubRoutinePtrTag> start)
{
ASSERT(m_stubInfo);
m_stubInfo->startLocation = start;
m_stubInfo->doneLocation = fastPath.locationOf<JSInternalPtrTag>(m_done);
if (!m_stubInfo->useDataIC)
m_stubInfo->m_slowPathCallLocation = slowPath.locationOf<JSInternalPtrTag>(m_slowPathCall);
m_stubInfo->slowPathStartLocation = slowPath.locationOf<JITStubRoutinePtrTag>(m_slowPathBegin);
}
#if ENABLE(DFG_JIT)
void JITInlineCacheGenerator::generateDFGDataICFastPath(DFG::JITCompiler& jit, unsigned stubInfoConstant, GPRReg stubInfoGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfoConstant, stubInfoGPR);
jit.farJump(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
m_done = jit.label();
}
#endif
void JITInlineCacheGenerator::generateBaselineDataICFastPath(JIT& jit, unsigned stubInfo, GPRReg stubInfoGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfo, stubInfoGPR);
jit.farJump(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
m_done = jit.label();
}
JITByIdGenerator::JITByIdGenerator(
CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, AccessType accessType,
JSValueRegs base, JSValueRegs value)
: JITInlineCacheGenerator(codeBlock, stubInfo, jitType, codeOrigin, accessType)
, m_base(base)
, m_value(value)
{
}
void JITByIdGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
JITInlineCacheGenerator::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
void JITByIdGenerator::generateFastCommon(CCallHelpers& jit, size_t inlineICSize)
{
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else {
size_t startSize = jit.m_assembler.buffer().codeSize();
m_slowPathJump = jit.jump();
size_t jumpSize = jit.m_assembler.buffer().codeSize() - startSize;
size_t nopsToEmitInBytes = inlineICSize - jumpSize;
jit.emitNops(nopsToEmitInBytes);
ASSERT(jit.m_assembler.buffer().codeSize() - startSize == inlineICSize);
}
m_done = jit.label();
}
JITGetByIdGenerator::JITGetByIdGenerator(
CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters,
CacheableIdentifier propertyName, JSValueRegs base, JSValueRegs value, GPRReg stubInfoGPR, AccessType accessType)
: JITByIdGenerator(codeBlock, stubInfo, jitType, codeOrigin, accessType, base, value)
, m_isLengthAccess(codeBlock && propertyName.uid() == codeBlock->vm().propertyNames->length.impl())
{
RELEASE_ASSERT(base.payloadGPR() != value.tagGPR());
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, accessType, codeOrigin, callSite, usedRegisters, base, value, stubInfoGPR);
}, stubInfo);
}
static void generateGetByIdInlineAccess(CCallHelpers& jit, GPRReg stubInfoGPR, JSValueRegs baseJSR, GPRReg scratchGPR, JSValueRegs resultJSR)
{
jit.load32(CCallHelpers::Address(baseJSR.payloadGPR(), JSCell::structureIDOffset()), scratchGPR);
auto doInlineAccess = jit.branch32(CCallHelpers::Equal, scratchGPR, CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfInlineAccessBaseStructureID()));
jit.farJump(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
doInlineAccess.link(&jit);
jit.load32(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfByIdSelfOffset()), scratchGPR);
jit.loadProperty(baseJSR.payloadGPR(), scratchGPR, resultJSR);
}
void JITGetByIdGenerator::generateFastPath(CCallHelpers& jit, GPRReg scratchGPR)
{
ASSERT(m_stubInfo);
if (!m_stubInfo->useDataIC) {
generateFastCommon(jit, m_isLengthAccess ? InlineAccess::sizeForLengthAccess() : InlineAccess::sizeForPropertyAccess());
return;
}
ASSERT(scratchGPR != InvalidGPRReg);
m_start = jit.label();
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
generateGetByIdInlineAccess(jit, m_stubInfo->m_stubInfoGPR, m_base, scratchGPR, m_value);
m_done = jit.label();
}
void JITGetByIdGenerator::generateBaselineDataICFastPath(JIT& jit, unsigned stubInfo, GPRReg stubInfoGPR)
{
m_start = jit.label();
using BaselineJITRegisters::GetById::baseJSR;
using BaselineJITRegisters::GetById::resultJSR;
using BaselineJITRegisters::GetById::FastPath::scratchGPR;
jit.loadConstant(stubInfo, stubInfoGPR);
generateGetByIdInlineAccess(jit, stubInfoGPR, baseJSR, scratchGPR, resultJSR);
m_done = jit.label();
}
#if ENABLE(DFG_JIT)
void JITGetByIdGenerator::generateDFGDataICFastPath(DFG::JITCompiler& jit, unsigned stubInfoConstant, JSValueRegs baseJSR, JSValueRegs resultJSR, GPRReg stubInfoGPR, GPRReg scratchGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfoConstant, stubInfoGPR);
generateGetByIdInlineAccess(jit, stubInfoGPR, baseJSR, scratchGPR, resultJSR);
m_done = jit.label();
}
#endif
JITGetByIdWithThisGenerator::JITGetByIdWithThisGenerator(
CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters,
CacheableIdentifier, JSValueRegs value, JSValueRegs base, JSValueRegs thisRegs, GPRReg stubInfoGPR)
: JITByIdGenerator(codeBlock, stubInfo, jitType, codeOrigin, AccessType::GetByIdWithThis, base, value)
{
RELEASE_ASSERT(thisRegs.payloadGPR() != thisRegs.tagGPR());
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, AccessType::GetByIdWithThis, codeOrigin, callSite, usedRegisters, value, base, thisRegs, stubInfoGPR);
}, stubInfo);
}
void JITGetByIdWithThisGenerator::generateFastPath(CCallHelpers& jit, GPRReg scratchGPR)
{
ASSERT(m_stubInfo);
if (!m_stubInfo->useDataIC) {
generateFastCommon(jit, InlineAccess::sizeForPropertyAccess());
return;
}
ASSERT(scratchGPR != InvalidGPRReg);
m_start = jit.label();
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
generateGetByIdInlineAccess(jit, m_stubInfo->m_stubInfoGPR, m_base, scratchGPR, m_value);
m_done = jit.label();
}
void JITGetByIdWithThisGenerator::generateBaselineDataICFastPath(JIT& jit, unsigned stubInfo, GPRReg stubInfoGPR)
{
m_start = jit.label();
using BaselineJITRegisters::GetByIdWithThis::baseJSR;
using BaselineJITRegisters::GetByIdWithThis::resultJSR;
using BaselineJITRegisters::GetByIdWithThis::FastPath::scratchGPR;
jit.loadConstant(stubInfo, stubInfoGPR);
generateGetByIdInlineAccess(jit, stubInfoGPR, baseJSR, scratchGPR, resultJSR);
m_done = jit.label();
}
#if ENABLE(DFG_JIT)
void JITGetByIdWithThisGenerator::generateDFGDataICFastPath(DFG::JITCompiler& jit, unsigned stubInfoConstant, JSValueRegs baseJSR, JSValueRegs resultJSR, GPRReg stubInfoGPR, GPRReg scratchGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfoConstant, stubInfoGPR);
generateGetByIdInlineAccess(jit, stubInfoGPR, baseJSR, scratchGPR, resultJSR);
m_done = jit.label();
}
#endif
JITPutByIdGenerator::JITPutByIdGenerator(
CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters, CacheableIdentifier,
JSValueRegs base, JSValueRegs value, GPRReg stubInfoGPR, GPRReg scratch,
ECMAMode ecmaMode, PutKind putKind)
: JITByIdGenerator(codeBlock, stubInfo, jitType, codeOrigin, AccessType::PutById, base, value)
, m_ecmaMode(ecmaMode)
, m_putKind(putKind)
{
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, AccessType::PutById, codeOrigin, callSite, usedRegisters, base, value, stubInfoGPR, scratch, ecmaMode, putKind);
}, stubInfo);
}
static void generatePutByIdInlineAccess(CCallHelpers& jit, GPRReg stubInfoGPR, JSValueRegs baseJSR, JSValueRegs valueJSR, GPRReg scratchGPR, GPRReg scratch2GPR)
{
jit.load32(CCallHelpers::Address(baseJSR.payloadGPR(), JSCell::structureIDOffset()), scratchGPR);
auto doInlineAccess = jit.branch32(CCallHelpers::Equal, scratchGPR, CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfInlineAccessBaseStructureID()));
jit.farJump(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
doInlineAccess.link(&jit);
jit.load32(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfByIdSelfOffset()), scratchGPR);
jit.storeProperty(valueJSR, baseJSR.payloadGPR(), scratchGPR, scratch2GPR);
}
void JITPutByIdGenerator::generateBaselineDataICFastPath(JIT& jit, unsigned stubInfo, GPRReg stubInfoGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfo, stubInfoGPR);
using BaselineJITRegisters::PutById::baseJSR;
using BaselineJITRegisters::PutById::valueJSR;
using BaselineJITRegisters::PutById::FastPath::scratchGPR;
using BaselineJITRegisters::PutById::FastPath::scratch2GPR;
generatePutByIdInlineAccess(jit, stubInfoGPR, baseJSR, valueJSR, scratchGPR, scratch2GPR);
m_done = jit.label();
}
#if ENABLE(DFG_JIT)
void JITPutByIdGenerator::generateDFGDataICFastPath(DFG::JITCompiler& jit, unsigned stubInfoConstant, JSValueRegs baseJSR, JSValueRegs valueJSR, GPRReg stubInfoGPR, GPRReg scratchGPR, GPRReg scratch2GPR)
{
m_start = jit.label();
jit.loadConstant(stubInfoConstant, stubInfoGPR);
generatePutByIdInlineAccess(jit, stubInfoGPR, baseJSR, valueJSR, scratchGPR, scratch2GPR);
m_done = jit.label();
}
#endif
void JITPutByIdGenerator::generateFastPath(CCallHelpers& jit, GPRReg scratchGPR, GPRReg scratch2GPR)
{
ASSERT(m_stubInfo);
if (!m_stubInfo->useDataIC) {
generateFastCommon(jit, InlineAccess::sizeForPropertyReplace());
return;
}
ASSERT(scratchGPR != InvalidGPRReg);
m_start = jit.label();
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
generatePutByIdInlineAccess(jit, m_stubInfo->m_stubInfoGPR, m_base, m_value, scratchGPR, scratch2GPR);
m_done = jit.label();
}
V_JITOperation_GSsiJJC JITPutByIdGenerator::slowPathFunction()
{
switch (m_putKind) {
case PutKind::NotDirect:
if (m_ecmaMode.isStrict())
return operationPutByIdStrictOptimize;
return operationPutByIdNonStrictOptimize;
case PutKind::Direct:
if (m_ecmaMode.isStrict())
return operationPutByIdDirectStrictOptimize;
return operationPutByIdDirectNonStrictOptimize;
case PutKind::DirectPrivateFieldDefine:
ASSERT(m_ecmaMode.isStrict());
return operationPutByIdDefinePrivateFieldStrictOptimize;
case PutKind::DirectPrivateFieldSet:
ASSERT(m_ecmaMode.isStrict());
return operationPutByIdSetPrivateFieldStrictOptimize;
}
// Make win port compiler happy
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
JITDelByValGenerator::JITDelByValGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg stubInfoGPR)
: Base(codeBlock, stubInfo, jitType, codeOrigin, AccessType::DeleteByVal)
{
ASSERT(base.payloadGPR() != result.payloadGPR());
#if USE(JSVALUE32_64)
ASSERT(base.tagGPR() != result.tagGPR());
#endif
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, AccessType::DeleteByVal, codeOrigin, callSiteIndex, usedRegisters, base, property, result, stubInfoGPR);
}, stubInfo);
}
void JITDelByValGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITDelByValGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITDelByIdGenerator::JITDelByIdGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier, JSValueRegs base, JSValueRegs result, GPRReg stubInfoGPR)
: Base(codeBlock, stubInfo, jitType, codeOrigin, AccessType::DeleteByID)
{
ASSERT(base.payloadGPR() != result.payloadGPR());
#if USE(JSVALUE32_64)
ASSERT(base.tagGPR() != result.tagGPR());
#endif
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, AccessType::DeleteByID, codeOrigin, callSiteIndex, usedRegisters, base, result, stubInfoGPR);
}, stubInfo);
}
void JITDelByIdGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITDelByIdGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITInByValGenerator::JITInByValGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, AccessType accessType, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg stubInfoGPR)
: Base(codeBlock, stubInfo, jitType, codeOrigin, accessType)
{
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, accessType, codeOrigin, callSiteIndex, usedRegisters, base, property, result, stubInfoGPR);
}, stubInfo);
}
void JITInByValGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITInByValGenerator::finalize(
LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_start.isSet());
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITInByIdGenerator::JITInByIdGenerator(
CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters,
CacheableIdentifier propertyName, JSValueRegs base, JSValueRegs value, GPRReg stubInfoGPR)
: JITByIdGenerator(codeBlock, stubInfo, jitType, codeOrigin, AccessType::InById, base, value)
{
// FIXME: We are not supporting fast path for "length" property.
UNUSED_PARAM(propertyName);
RELEASE_ASSERT(base.payloadGPR() != value.tagGPR());
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, AccessType::InById, codeOrigin, callSite, usedRegisters, base, value, stubInfoGPR);
}, stubInfo);
}
static void generateInByIdInlineAccess(CCallHelpers& jit, GPRReg stubInfoGPR, JSValueRegs baseJSR, GPRReg scratchGPR, JSValueRegs resultJSR)
{
jit.load32(CCallHelpers::Address(baseJSR.payloadGPR(), JSCell::structureIDOffset()), scratchGPR);
auto skipInlineAccess = jit.branch32(CCallHelpers::NotEqual, scratchGPR, CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfInlineAccessBaseStructureID()));
jit.boxBoolean(true, resultJSR);
auto finished = jit.jump();
skipInlineAccess.link(&jit);
jit.farJump(CCallHelpers::Address(stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
finished.link(&jit);
}
void JITInByIdGenerator::generateFastPath(CCallHelpers& jit, GPRReg scratchGPR)
{
ASSERT(m_stubInfo);
if (!m_stubInfo->useDataIC) {
generateFastCommon(jit, InlineAccess::sizeForPropertyAccess());
return;
}
ASSERT(scratchGPR != InvalidGPRReg);
m_start = jit.label();
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
generateInByIdInlineAccess(jit, m_stubInfo->m_stubInfoGPR, m_base, scratchGPR, m_value);
m_done = jit.label();
}
void JITInByIdGenerator::generateBaselineDataICFastPath(JIT& jit, unsigned stubInfo, GPRReg stubInfoGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfo, stubInfoGPR);
using BaselineJITRegisters::InById::baseJSR;
using BaselineJITRegisters::InById::resultJSR;
using BaselineJITRegisters::InById::scratchGPR;
generateInByIdInlineAccess(jit, stubInfoGPR, baseJSR, scratchGPR, resultJSR);
m_done = jit.label();
}
#if ENABLE(DFG_JIT)
void JITInByIdGenerator::generateDFGDataICFastPath(DFG::JITCompiler& jit, unsigned stubInfoConstant, JSValueRegs baseJSR, JSValueRegs resultJSR, GPRReg stubInfoGPR, GPRReg scratchGPR)
{
m_start = jit.label();
jit.loadConstant(stubInfoConstant, stubInfoGPR);
generateInByIdInlineAccess(jit, stubInfoGPR, baseJSR, scratchGPR, resultJSR);
m_done = jit.label();
}
#endif
JITInstanceOfGenerator::JITInstanceOfGenerator(
CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex,
const RegisterSet& usedRegisters, GPRReg result, GPRReg value, GPRReg prototype, GPRReg stubInfoGPR,
bool prototypeIsKnownObject)
: JITInlineCacheGenerator(codeBlock, stubInfo, jitType, codeOrigin, AccessType::InstanceOf)
{
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, AccessType::InstanceOf, codeOrigin, callSiteIndex, usedRegisters, result, value, prototype, stubInfoGPR, prototypeIsKnownObject);
}, stubInfo);
}
void JITInstanceOfGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITInstanceOfGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITGetByValGenerator::JITGetByValGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, AccessType accessType, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg stubInfoGPR)
: Base(codeBlock, stubInfo, jitType, codeOrigin, accessType)
, m_base(base)
, m_result(result)
{
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, accessType, codeOrigin, callSiteIndex, usedRegisters, base, property, result, stubInfoGPR);
}, stubInfo);
}
void JITGetByValGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITGetByValGenerator::generateEmptyPath(CCallHelpers& jit)
{
m_start = jit.label();
m_done = jit.label();
}
void JITGetByValGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITGetByValWithThisGenerator::JITGetByValWithThisGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, AccessType accessType, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs thisRegs, JSValueRegs result, GPRReg stubInfoGPR)
: Base(codeBlock, stubInfo, jitType, codeOrigin, accessType)
, m_base(base)
, m_result(result)
{
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, accessType, codeOrigin, callSiteIndex, usedRegisters, base, property, thisRegs, result, stubInfoGPR);
}, stubInfo);
}
void JITGetByValWithThisGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITGetByValWithThisGenerator::generateEmptyPath(CCallHelpers& jit)
{
m_start = jit.label();
m_done = jit.label();
}
void JITGetByValWithThisGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITPutByValGenerator::JITPutByValGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, AccessType accessType, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs value, GPRReg arrayProfileGPR, GPRReg stubInfoGPR, PutKind putKind, ECMAMode ecmaMode, PrivateFieldPutKind privateFieldPutKind)
: Base(codeBlock, stubInfo, jitType, codeOrigin, accessType)
, m_base(base)
, m_value(value)
{
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, accessType, codeOrigin, callSiteIndex, usedRegisters, base, property, value, arrayProfileGPR, stubInfoGPR, putKind, ecmaMode, privateFieldPutKind);
}, stubInfo);
}
void JITPutByValGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITPutByValGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
JITPrivateBrandAccessGenerator::JITPrivateBrandAccessGenerator(CodeBlock* codeBlock, CompileTimeStructureStubInfo stubInfo, JITType jitType, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, AccessType accessType, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs brand, GPRReg stubInfoGPR)
: Base(codeBlock, stubInfo, jitType, codeOrigin, accessType)
{
ASSERT(accessType == AccessType::CheckPrivateBrand || accessType == AccessType::SetPrivateBrand);
std::visit([&](auto* stubInfo) {
setUpStubInfo(*stubInfo, accessType, codeOrigin, callSiteIndex, usedRegisters, base, brand, stubInfoGPR);
}, stubInfo);
}
void JITPrivateBrandAccessGenerator::generateFastPath(CCallHelpers& jit)
{
ASSERT(m_stubInfo);
m_start = jit.label();
if (m_stubInfo->useDataIC) {
jit.move(CCallHelpers::TrustedImmPtr(m_stubInfo), m_stubInfo->m_stubInfoGPR);
jit.farJump(CCallHelpers::Address(m_stubInfo->m_stubInfoGPR, StructureStubInfo::offsetOfCodePtr()), JITStubRoutinePtrTag);
} else
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITPrivateBrandAccessGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_stubInfo);
Base::finalize(fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
if (m_stubInfo->useDataIC)
m_stubInfo->m_codePtr = m_stubInfo->slowPathStartLocation;
}
} // namespace JSC
#endif // ENABLE(JIT)