JITInlineCacheGenerator.cpp [plain text]
#include "config.h"
#include "JITInlineCacheGenerator.h"
#if ENABLE(JIT)
#include "CacheableIdentifierInlines.h"
#include "CodeBlock.h"
#include "InlineAccess.h"
#include "LinkBuffer.h"
#include "StructureStubInfo.h"
namespace JSC {
static StructureStubInfo* garbageStubInfo()
{
static StructureStubInfo* stubInfo = new StructureStubInfo(AccessType::GetById, CodeOrigin());
return stubInfo;
}
JITInlineCacheGenerator::JITInlineCacheGenerator(
CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, AccessType accessType,
const RegisterSet& usedRegisters)
: m_codeBlock(codeBlock)
{
m_stubInfo = m_codeBlock ? m_codeBlock->addStubInfo(accessType, codeOrigin) : garbageStubInfo();
m_stubInfo->callSiteIndex = callSite;
m_stubInfo->usedRegisters = usedRegisters;
}
void JITInlineCacheGenerator::finalize(
LinkBuffer& fastPath, LinkBuffer& slowPath, CodeLocationLabel<JITStubRoutinePtrTag> start)
{
m_stubInfo->start = start;
m_stubInfo->doneLocation = fastPath.locationOf<JSInternalPtrTag>(m_done);
m_stubInfo->slowPathCallLocation = slowPath.locationOf<JSInternalPtrTag>(m_slowPathCall);
m_stubInfo->slowPathStartLocation = slowPath.locationOf<JITStubRoutinePtrTag>(m_slowPathBegin);
}
JITByIdGenerator::JITByIdGenerator(
CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, AccessType accessType,
const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs value)
: JITInlineCacheGenerator(codeBlock, codeOrigin, callSite, accessType, usedRegisters)
, m_base(base)
, m_value(value)
{
m_stubInfo->baseGPR = base.payloadGPR();
m_stubInfo->valueGPR = value.payloadGPR();
m_stubInfo->regs.thisGPR = InvalidGPRReg;
#if USE(JSVALUE32_64)
m_stubInfo->baseTagGPR = base.tagGPR();
m_stubInfo->valueTagGPR = value.tagGPR();
m_stubInfo->v.thisTagGPR = InvalidGPRReg;
#endif
}
void JITByIdGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_start.isSet());
JITInlineCacheGenerator::finalize(
fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
}
void JITByIdGenerator::generateFastCommon(MacroAssembler& jit, size_t inlineICSize)
{
m_start = jit.label();
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, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters,
CacheableIdentifier propertyName, JSValueRegs base, JSValueRegs value, AccessType accessType)
: JITByIdGenerator(codeBlock, codeOrigin, callSite, accessType, usedRegisters, base, value)
, m_isLengthAccess(propertyName.uid() == codeBlock->vm().propertyNames->length.impl())
{
RELEASE_ASSERT(base.payloadGPR() != value.tagGPR());
}
void JITGetByIdGenerator::generateFastPath(MacroAssembler& jit)
{
generateFastCommon(jit, m_isLengthAccess ? InlineAccess::sizeForLengthAccess() : InlineAccess::sizeForPropertyAccess());
}
JITGetByIdWithThisGenerator::JITGetByIdWithThisGenerator(
CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters,
CacheableIdentifier, JSValueRegs value, JSValueRegs base, JSValueRegs thisRegs)
: JITByIdGenerator(codeBlock, codeOrigin, callSite, AccessType::GetByIdWithThis, usedRegisters, base, value)
{
RELEASE_ASSERT(thisRegs.payloadGPR() != thisRegs.tagGPR());
m_stubInfo->regs.thisGPR = thisRegs.payloadGPR();
#if USE(JSVALUE32_64)
m_stubInfo->v.thisTagGPR = thisRegs.tagGPR();
#endif
}
void JITGetByIdWithThisGenerator::generateFastPath(MacroAssembler& jit)
{
generateFastCommon(jit, InlineAccess::sizeForPropertyAccess());
}
JITPutByIdGenerator::JITPutByIdGenerator(
CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters, CacheableIdentifier,
JSValueRegs base, JSValueRegs value, GPRReg scratch,
ECMAMode ecmaMode, PutKind putKind, PrivateFieldAccessKind privateFieldAccessKind)
: JITByIdGenerator(codeBlock, codeOrigin, callSite, AccessType::Put, usedRegisters, base, value)
, m_ecmaMode(ecmaMode)
, m_putKind(putKind)
, m_privateFieldAccessKind(privateFieldAccessKind)
{
m_stubInfo->usedRegisters.clear(scratch);
}
void JITPutByIdGenerator::generateFastPath(MacroAssembler& jit)
{
generateFastCommon(jit, InlineAccess::sizeForPropertyReplace());
}
V_JITOperation_GSsiJJC JITPutByIdGenerator::slowPathFunction()
{
if (m_privateFieldAccessKind != PrivateFieldAccessKind::None) {
ASSERT(m_putKind == Direct);
ASSERT(m_ecmaMode.isStrict());
if (m_privateFieldAccessKind == PrivateFieldAccessKind::Create)
return operationPutByIdDefinePrivateFieldStrictOptimize;
return operationPutByIdPutPrivateFieldStrictOptimize;
}
if (m_ecmaMode.isStrict()) {
if (m_putKind == Direct)
return operationPutByIdDirectStrictOptimize;
return operationPutByIdStrictOptimize;
}
if (m_putKind == Direct)
return operationPutByIdDirectNonStrictOptimize;
return operationPutByIdNonStrictOptimize;
}
JITDelByValGenerator::JITDelByValGenerator(CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs result, GPRReg scratch)
: Base(codeBlock, codeOrigin, callSiteIndex, AccessType::DeleteByVal, usedRegisters)
{
m_stubInfo->hasConstantIdentifier = false;
ASSERT(base.payloadGPR() != result.payloadGPR());
m_stubInfo->baseGPR = base.payloadGPR();
m_stubInfo->regs.propertyGPR = property.payloadGPR();
m_stubInfo->valueGPR = result.payloadGPR();
#if USE(JSVALUE32_64)
ASSERT(base.tagGPR() != result.tagGPR());
m_stubInfo->baseTagGPR = base.tagGPR();
m_stubInfo->valueTagGPR = result.tagGPR();
m_stubInfo->v.propertyTagGPR = property.tagGPR();
#endif
m_stubInfo->usedRegisters.clear(scratch);
}
void JITDelByValGenerator::generateFastPath(MacroAssembler& jit)
{
m_start = jit.label();
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITDelByValGenerator::finalize(
LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_slowPathJump.m_jump.isSet());
Base::finalize(
fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
}
JITDelByIdGenerator::JITDelByIdGenerator(CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, const RegisterSet& usedRegisters, CacheableIdentifier, JSValueRegs base, JSValueRegs result, GPRReg scratch)
: Base(codeBlock, codeOrigin, callSiteIndex, AccessType::DeleteByID, usedRegisters)
{
m_stubInfo->hasConstantIdentifier = true;
ASSERT(base.payloadGPR() != result.payloadGPR());
m_stubInfo->baseGPR = base.payloadGPR();
m_stubInfo->regs.propertyGPR = InvalidGPRReg;
m_stubInfo->valueGPR = result.payloadGPR();
#if USE(JSVALUE32_64)
ASSERT(base.tagGPR() != result.tagGPR());
m_stubInfo->baseTagGPR = base.tagGPR();
m_stubInfo->valueTagGPR = result.tagGPR();
m_stubInfo->v.propertyTagGPR = InvalidGPRReg;
#endif
m_stubInfo->usedRegisters.clear(scratch);
}
void JITDelByIdGenerator::generateFastPath(MacroAssembler& jit)
{
m_start = jit.label();
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITDelByIdGenerator::finalize(
LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_slowPathJump.m_jump.isSet());
Base::finalize(
fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
}
JITInByIdGenerator::JITInByIdGenerator(
CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet& usedRegisters,
CacheableIdentifier propertyName, JSValueRegs base, JSValueRegs value)
: JITByIdGenerator(codeBlock, codeOrigin, callSite, AccessType::In, usedRegisters, base, value)
{
UNUSED_PARAM(propertyName);
RELEASE_ASSERT(base.payloadGPR() != value.tagGPR());
}
void JITInByIdGenerator::generateFastPath(MacroAssembler& jit)
{
generateFastCommon(jit, InlineAccess::sizeForPropertyAccess());
}
JITInstanceOfGenerator::JITInstanceOfGenerator(
CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex,
const RegisterSet& usedRegisters, GPRReg result, GPRReg value, GPRReg prototype,
GPRReg scratch1, GPRReg scratch2, bool prototypeIsKnownObject)
: JITInlineCacheGenerator(
codeBlock, codeOrigin, callSiteIndex, AccessType::InstanceOf, usedRegisters)
{
m_stubInfo->baseGPR = value;
m_stubInfo->valueGPR = result;
m_stubInfo->regs.prototypeGPR = prototype;
#if USE(JSVALUE32_64)
m_stubInfo->baseTagGPR = InvalidGPRReg;
m_stubInfo->valueTagGPR = InvalidGPRReg;
m_stubInfo->v.thisTagGPR = InvalidGPRReg;
#endif
m_stubInfo->usedRegisters.clear(result);
if (scratch1 != InvalidGPRReg)
m_stubInfo->usedRegisters.clear(scratch1);
if (scratch2 != InvalidGPRReg)
m_stubInfo->usedRegisters.clear(scratch2);
m_stubInfo->prototypeIsKnownObject = prototypeIsKnownObject;
m_stubInfo->hasConstantIdentifier = false;
}
void JITInstanceOfGenerator::generateFastPath(MacroAssembler& jit)
{
m_jump = jit.patchableJump();
m_done = jit.label();
}
void JITInstanceOfGenerator::finalize(LinkBuffer& fastPath, LinkBuffer& slowPath)
{
JITInlineCacheGenerator::finalize(
fastPath, slowPath,
fastPath.locationOf<JITStubRoutinePtrTag>(m_jump));
fastPath.link(m_jump.m_jump, slowPath.locationOf<NoPtrTag>(m_slowPathBegin));
}
JITGetByValGenerator::JITGetByValGenerator(CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSiteIndex, AccessType accessType, const RegisterSet& usedRegisters, JSValueRegs base, JSValueRegs property, JSValueRegs result)
: Base(codeBlock, codeOrigin, callSiteIndex, accessType, usedRegisters)
, m_base(base)
, m_result(result)
{
m_stubInfo->hasConstantIdentifier = false;
m_stubInfo->baseGPR = base.payloadGPR();
m_stubInfo->regs.propertyGPR = property.payloadGPR();
m_stubInfo->valueGPR = result.payloadGPR();
#if USE(JSVALUE32_64)
m_stubInfo->baseTagGPR = base.tagGPR();
m_stubInfo->valueTagGPR = result.tagGPR();
m_stubInfo->v.propertyTagGPR = property.tagGPR();
#endif
}
void JITGetByValGenerator::generateFastPath(MacroAssembler& jit)
{
m_start = jit.label();
m_slowPathJump = jit.patchableJump();
m_done = jit.label();
}
void JITGetByValGenerator::finalize(
LinkBuffer& fastPath, LinkBuffer& slowPath)
{
ASSERT(m_start.isSet());
Base::finalize(
fastPath, slowPath, fastPath.locationOf<JITStubRoutinePtrTag>(m_start));
}
}
#endif // ENABLE(JIT)