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DynamicProfileInfo.cpp
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//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------
#include "RuntimeLanguagePch.h"
#if ENABLE_NATIVE_CODEGEN
namespace Js
{
#ifdef DYNAMIC_PROFILE_STORAGE
DynamicProfileInfo::DynamicProfileInfo()
{
hasFunctionBody = false;
}
#endif
struct Allocation
{
uint offset;
size_t size;
};
#if DBG_DUMP || defined(DYNAMIC_PROFILE_STORAGE) || defined(RUNTIME_DATA_COLLECTION)
bool DynamicProfileInfo::NeedProfileInfoList()
{
#pragma prefast(suppress: 6235 6286, "(<non-zero constant> || <expression>) is always a non-zero constant. - This is wrong, DBG_DUMP is not set in some build variants")
return DBG_DUMP
#ifdef DYNAMIC_PROFILE_STORAGE
|| DynamicProfileStorage::IsEnabled()
#endif
#ifdef RUNTIME_DATA_COLLECTION
|| (Configuration::Global.flags.RuntimeDataOutputFile != nullptr)
#endif
;
}
#endif
void ArrayCallSiteInfo::SetIsNotNativeIntArray()
{
OUTPUT_TRACE_WITH_STACK(Js::NativeArrayConversionPhase, _u("SetIsNotNativeIntArray \n"));
bits |= NotNativeIntBit;
}
void ArrayCallSiteInfo::SetIsNotNativeFloatArray()
{
OUTPUT_TRACE_WITH_STACK(Js::NativeArrayConversionPhase, _u("SetIsNotNativeFloatArray \n"));
bits |= NotNativeFloatBit;
}
void ArrayCallSiteInfo::SetIsNotNativeArray()
{
OUTPUT_TRACE_WITH_STACK(Js::NativeArrayConversionPhase, _u("SetIsNotNativeArray \n"));
bits = NotNativeIntBit | NotNativeFloatBit;
}
DynamicProfileInfo* DynamicProfileInfo::New(Recycler* recycler, FunctionBody* functionBody, bool persistsAcrossScriptContexts)
{
size_t totalAlloc = 0;
Allocation batch[] =
{
{ (uint)offsetof(DynamicProfileInfo, callSiteInfo), functionBody->GetProfiledCallSiteCount() * sizeof(CallSiteInfo) },
{ (uint)offsetof(DynamicProfileInfo, ldElemInfo), functionBody->GetProfiledLdElemCount() * sizeof(LdElemInfo) },
{ (uint)offsetof(DynamicProfileInfo, stElemInfo), functionBody->GetProfiledStElemCount() * sizeof(StElemInfo) },
{ (uint)offsetof(DynamicProfileInfo, arrayCallSiteInfo), functionBody->GetProfiledArrayCallSiteCount() * sizeof(ArrayCallSiteInfo) },
{ (uint)offsetof(DynamicProfileInfo, fldInfo), functionBody->GetProfiledFldCount() * sizeof(FldInfo) },
{ (uint)offsetof(DynamicProfileInfo, divideTypeInfo), functionBody->GetProfiledDivOrRemCount() * sizeof(ValueType) },
{ (uint)offsetof(DynamicProfileInfo, switchTypeInfo), functionBody->GetProfiledSwitchCount() * sizeof(ValueType)},
{ (uint)offsetof(DynamicProfileInfo, slotInfo), functionBody->GetProfiledSlotCount() * sizeof(ValueType) },
{ (uint)offsetof(DynamicProfileInfo, parameterInfo), functionBody->GetProfiledInParamsCount() * sizeof(ValueType) },
{ (uint)offsetof(DynamicProfileInfo, returnTypeInfo), functionBody->GetProfiledReturnTypeCount() * sizeof(ValueType) },
{ (uint)offsetof(DynamicProfileInfo, loopImplicitCallFlags), (EnableImplicitCallFlags(functionBody) ? (functionBody->GetLoopCount() * sizeof(ImplicitCallFlags)) : 0) },
{ (uint)offsetof(DynamicProfileInfo, loopFlags), functionBody->GetLoopCount() ? BVFixed::GetAllocSize(functionBody->GetLoopCount() * LoopFlags::COUNT) : 0 }
};
for (uint i = 0; i < _countof(batch); i++)
{
totalAlloc += batch[i].size;
}
DynamicProfileInfo* info = nullptr;
// In the profile storage case (-only), always allocate a non-leaf profile
// In the regular profile case, we need to allocate it as non-leaf only if it's
// a profile being used in the in-memory cache. This is because in that case, the profile
// also allocates dynamicProfileFunctionInfo, which it uses to match functions across
// script contexts. In the normal case, since we don't allocate that structure, we
// can be a leaf allocation.
if (persistsAcrossScriptContexts)
{
info = RecyclerNewPlusZ(recycler, totalAlloc, DynamicProfileInfo, functionBody);
#if DBG
info->persistsAcrossScriptContexts = true;
#endif
}
else
{
#if DBG_DUMP || defined(DYNAMIC_PROFILE_STORAGE) || defined(RUNTIME_DATA_COLLECTION)
if (DynamicProfileInfo::NeedProfileInfoList())
{
info = RecyclerNewPlusZ(recycler, totalAlloc, DynamicProfileInfo, functionBody);
}
else
#endif
{
info = RecyclerNewPlusLeafZ(recycler, totalAlloc, DynamicProfileInfo, functionBody);
}
}
BYTE* current = (BYTE*)info + sizeof(DynamicProfileInfo);
for (uint i = 0; i < _countof(batch); i++)
{
if (batch[i].size > 0)
{
Field(BYTE*)* field = (Field(BYTE*)*)(((BYTE*)info + batch[i].offset));
*field = current;
current += batch[i].size;
}
}
Assert(current - reinterpret_cast<BYTE*>(info) - sizeof(DynamicProfileInfo) == totalAlloc);
info->Initialize(functionBody);
return info;
}
DynamicProfileInfo::DynamicProfileInfo(FunctionBody * functionBody)
#if DBG_DUMP || defined(DYNAMIC_PROFILE_STORAGE) || defined(RUNTIME_DATA_COLLECTION)
: functionBody(DynamicProfileInfo::NeedProfileInfoList() ? functionBody : nullptr)
#endif
{
hasFunctionBody = true;
#if DBG
persistsAcrossScriptContexts = true;
#endif
}
void DynamicProfileInfo::Initialize(FunctionBody *const functionBody)
{
// Need to make value types uninitialized, which is not equivalent to zero
thisInfo.valueType = ValueType::Uninitialized;
const BVIndex loopFlagsCount = functionBody->GetLoopCount() * LoopFlags::COUNT;
if (loopFlagsCount)
{
this->loopFlags->Init(loopFlagsCount);
LoopFlags defaultValues;
for (uint i = 0; i < functionBody->GetLoopCount(); ++i)
{
this->loopFlags->SetRange(&defaultValues, i * LoopFlags::COUNT, LoopFlags::COUNT);
}
}
for (ProfileId i = 0; i < functionBody->GetProfiledCallSiteCount(); ++i)
{
callSiteInfo[i].returnType = ValueType::Uninitialized;
callSiteInfo[i].u.functionData.sourceId = NoSourceId;
}
for (ProfileId i = 0; i < functionBody->GetProfiledLdElemCount(); ++i)
{
ldElemInfo[i].arrayType = ValueType::Uninitialized;
ldElemInfo[i].elemType = ValueType::Uninitialized;
}
for (ProfileId i = 0; i < functionBody->GetProfiledStElemCount(); ++i)
{
stElemInfo[i].arrayType = ValueType::Uninitialized;
}
for (uint i = 0; i < functionBody->GetProfiledFldCount(); ++i)
{
fldInfo[i].flags = FldInfo_NoInfo;
fldInfo[i].valueType = ValueType::Uninitialized;
fldInfo[i].polymorphicInlineCacheUtilization = PolymorphicInlineCacheUtilizationThreshold;
}
for (ProfileId i = 0; i < functionBody->GetProfiledDivOrRemCount(); ++i)
{
divideTypeInfo[i] = ValueType::Uninitialized;
}
for (ProfileId i = 0; i < functionBody->GetProfiledSwitchCount(); ++i)
{
switchTypeInfo[i] = ValueType::Uninitialized;
}
for (ProfileId i = 0; i < functionBody->GetProfiledSlotCount(); ++i)
{
slotInfo[i] = ValueType::Uninitialized;
}
for (ArgSlot i = 0; i < functionBody->GetProfiledInParamsCount(); ++i)
{
parameterInfo[i] = ValueType::Uninitialized;
}
for (ProfileId i = 0; i < functionBody->GetProfiledReturnTypeCount(); ++i)
{
returnTypeInfo[i] = ValueType::Uninitialized;
}
this->rejitCount = 0;
this->bailOutOffsetForLastRejit = Js::Constants::NoByteCodeOffset;
#if DBG
for (ProfileId i = 0; i < functionBody->GetProfiledArrayCallSiteCount(); ++i)
{
arrayCallSiteInfo[i].functionNumber = functionBody->GetFunctionNumber();
arrayCallSiteInfo[i].callSiteNumber = i;
}
#endif
#if TTD_NATIVE_PROFILE_ARRAY_WORK_AROUND
if(functionBody->GetScriptContext()->GetThreadContext()->IsRuntimeInTTDMode())
{
for(ProfileId i = 0; i < functionBody->GetProfiledArrayCallSiteCount(); ++i)
{
arrayCallSiteInfo[i].SetIsNotNativeArray();
}
}
#endif
}
bool DynamicProfileInfo::IsEnabledForAtLeastOneFunction(const ScriptContext *const scriptContext)
{
return IsEnabled_OptionalFunctionBody(nullptr, scriptContext);
}
bool DynamicProfileInfo::IsEnabled(const FunctionBody *const functionBody)
{
Assert(functionBody);
return IsEnabled_OptionalFunctionBody(functionBody, functionBody->GetScriptContext());
}
bool DynamicProfileInfo::IsEnabled_OptionalFunctionBody(const FunctionBody *const functionBody, const ScriptContext *const scriptContext)
{
Assert(scriptContext);
return
!PHASE_OFF_OPTFUNC(DynamicProfilePhase, functionBody) &&
(
#if ENABLE_DEBUG_CONFIG_OPTIONS
PHASE_FORCE_OPTFUNC(DynamicProfilePhase, functionBody) ||
#else
Js::Configuration::Global.flags.ForceDynamicProfile ||
#endif
!scriptContext->GetConfig()->IsNoNative() ||
(functionBody && functionBody->IsInDebugMode())
#ifdef DYNAMIC_PROFILE_STORAGE
|| DynamicProfileStorage::DoCollectInfo()
#endif
);
}
bool DynamicProfileInfo::IsEnabledForAtLeastOneFunction(const Js::Phase phase, const ScriptContext *const scriptContext)
{
return IsEnabled_OptionalFunctionBody(phase, nullptr, scriptContext);
}
bool DynamicProfileInfo::IsEnabled(const Js::Phase phase, const FunctionBody *const functionBody)
{
Assert(functionBody);
return IsEnabled_OptionalFunctionBody(phase, functionBody, functionBody->GetScriptContext());
}
bool DynamicProfileInfo::IsEnabled_OptionalFunctionBody(
const Js::Phase phase,
const FunctionBody *const functionBody,
const ScriptContext *const scriptContext)
{
if (!DynamicProfileInfo::IsEnabled_OptionalFunctionBody(functionBody, scriptContext))
{
return false;
}
switch (phase)
{
case Phase::TypedArrayPhase:
case Phase::AggressiveIntTypeSpecPhase:
case Phase::CheckThisPhase:
case Phase::ProfileBasedFldFastPathPhase:
case Phase::ObjTypeSpecPhase:
case Phase::ArrayCheckHoistPhase:
case Phase::SwitchOptPhase:
case Phase::FixedNewObjPhase:
return !PHASE_OFF_PROFILED_BYTE_CODE_OPTFUNC(phase, functionBody);
case Phase::NativeArrayPhase:
case Phase::FloatTypeSpecPhase:
return !PHASE_OFF_PROFILED_BYTE_CODE_OPTFUNC(phase, functionBody)
#ifdef _M_IX86
&& AutoSystemInfo::Data.SSE2Available()
#endif
;
case Phase::InlinePhase:
return !PHASE_OFF_PROFILED_BYTE_CODE_OPTFUNC(Phase::InlinePhase, functionBody);
}
return false;
}
bool DynamicProfileInfo::EnableImplicitCallFlags(const FunctionBody *const functionBody)
{
return DynamicProfileInfo::IsEnabled(functionBody);
}
#ifdef _M_IX86
__declspec(naked)
Var
DynamicProfileInfo::EnsureDynamicProfileInfoThunk(RecyclableObject* function, CallInfo callInfo, ...)
{
__asm
{
push ebp
mov ebp, esp
push[esp + 8] // push function object
call DynamicProfileInfo::EnsureDynamicProfileInfo;
#ifdef _CONTROL_FLOW_GUARD
// verify that the call target is valid
mov ecx, eax
call[__guard_check_icall_fptr]
mov eax, ecx
#endif
pop ebp
jmp eax
}
}
#endif
JavascriptMethod DynamicProfileInfo::EnsureDynamicProfileInfo(ScriptFunction * function)
{
// If we're creating a dynamic profile, make sure that the function
// has an entry point and this entry point is the "default" entrypoint
// created when a function body is created.
Assert(function->GetEntryPointInfo() != nullptr);
Assert(function->GetFunctionEntryPointInfo()->entryPointIndex == 0);
FunctionBody * functionBody = function->GetFunctionBody();
// This is used only if the first entry point codegen completes.
// So there is no concurrency concern with background code gen thread modifying the entry point.
EntryPointInfo * entryPoint = functionBody->GetEntryPointInfo(0);
Assert(entryPoint == function->GetEntryPointInfo());
Assert(entryPoint->IsCodeGenDone());
JavascriptMethod directEntryPoint = entryPoint->jsMethod;
// Check if it has changed already
if (directEntryPoint == DynamicProfileInfo::EnsureDynamicProfileInfoThunk)
{
functionBody->EnsureDynamicProfileInfo();
if (functionBody->GetScriptContext()->CurrentThunk == ProfileEntryThunk)
{
directEntryPoint = ProfileEntryThunk;
}
else
{
directEntryPoint = entryPoint->GetNativeEntrypoint();
}
entryPoint->jsMethod = directEntryPoint;
}
else
{
Assert(directEntryPoint == ProfileEntryThunk || functionBody->GetScriptContext()->IsNativeAddress((void*)directEntryPoint));
Assert(functionBody->HasExecutionDynamicProfileInfo());
}
return function->UpdateThunkEntryPoint(static_cast<FunctionEntryPointInfo*>(entryPoint), directEntryPoint);
}
bool DynamicProfileInfo::HasLdFldCallSiteInfo() const
{
return bits.hasLdFldCallSite;
}
bool DynamicProfileInfo::RecordLdFldCallSiteInfo(FunctionBody* functionBody, RecyclableObject* callee, bool callApplyTarget)
{
auto SetBits = [&]() -> bool
{
this->bits.hasLdFldCallSite = true;
this->currentInlinerVersion++; // we don't mind if this overflows
return true;
};
FunctionInfo* calleeFunctionInfo = callee->GetTypeId() == TypeIds_Function ? JavascriptFunction::FromVar(callee)->GetFunctionInfo() : nullptr;
if (calleeFunctionInfo == nullptr)
{
return false;
}
else if (!calleeFunctionInfo->HasBody())
{
// We can inline fastDOM getter/setter.
// We can directly call Math.max/min as apply targets.
if ((calleeFunctionInfo->GetAttributes() & Js::FunctionInfo::Attributes::NeedCrossSiteSecurityCheck) ||
(callApplyTarget && (calleeFunctionInfo->GetAttributes() & Js::FunctionInfo::Attributes::BuiltInInlinableAsLdFldInlinee)))
{
if (functionBody->GetScriptContext() == callee->GetScriptContext())
{
return SetBits();
}
}
return false;
}
else if (functionBody->CheckCalleeContextForInlining(calleeFunctionInfo->GetFunctionProxy()))
{
// If functionInfo !HasBody(), the previous 'else if' branch is executed; otherwise it has a body and therefore it has a proxy
return SetBits();
}
return false;
}
void DynamicProfileInfo::RecordConstParameterAtCallSite(ProfileId callSiteId, int argNum)
{
Assert(argNum < Js::InlineeCallInfo::MaxInlineeArgoutCount);
Assert(callSiteId < functionBody->GetProfiledCallSiteCount());
callSiteInfo[callSiteId].isArgConstant = callSiteInfo[callSiteId].isArgConstant | (1 << argNum);
}
uint16 DynamicProfileInfo::GetConstantArgInfo(ProfileId callSiteId)
{
return callSiteInfo[callSiteId].isArgConstant;
}
#ifdef ASMJS_PLAT
void DynamicProfileInfo::RecordAsmJsCallSiteInfo(FunctionBody* callerBody, ProfileId callSiteId, FunctionBody* calleeBody)
{
if (!callerBody || !callerBody->GetIsAsmjsMode() || !calleeBody || !calleeBody->GetIsAsmjsMode())
{
AssertMsg(UNREACHED, "Call to RecordAsmJsCallSiteInfo without 2 wasm function body");
return;
}
#if DBG_DUMP || defined(DYNAMIC_PROFILE_STORAGE) || defined(RUNTIME_DATA_COLLECTION)
// If we persistsAcrossScriptContext, the dynamic profile info may be referred to by multiple function body from
// different script context
Assert(!DynamicProfileInfo::NeedProfileInfoList() || this->persistsAcrossScriptContexts || this->functionBody == callerBody);
#endif
bool doInline = true;
// This is a hard limit as we only use 4 bits to encode the actual count in the InlineeCallInfo
if (calleeBody->GetAsmJsFunctionInfo()->GetArgCount() > Js::InlineeCallInfo::MaxInlineeArgoutCount)
{
doInline = false;
}
// Mark the callsite bit where caller and callee is same function
if (calleeBody == callerBody && callSiteId < 32)
{
this->m_recursiveInlineInfo = this->m_recursiveInlineInfo | (1 << callSiteId);
}
// TODO: support polymorphic inlining in wasm
Assert(!callSiteInfo[callSiteId].isPolymorphic);
Js::SourceId oldSourceId = callSiteInfo[callSiteId].u.functionData.sourceId;
if (oldSourceId == InvalidSourceId)
{
return;
}
Js::LocalFunctionId oldFunctionId = callSiteInfo[callSiteId].u.functionData.functionId;
Js::SourceId sourceId = InvalidSourceId;
Js::LocalFunctionId functionId;
// We can only inline function that are from the same script context
if (callerBody->GetScriptContext() == calleeBody->GetScriptContext())
{
if (callerBody->GetSecondaryHostSourceContext() == calleeBody->GetSecondaryHostSourceContext())
{
if (callerBody->GetHostSourceContext() == calleeBody->GetHostSourceContext())
{
sourceId = CurrentSourceId; // Caller and callee in same file
}
else
{
sourceId = (Js::SourceId)calleeBody->GetHostSourceContext(); // Caller and callee in different files
}
functionId = calleeBody->GetLocalFunctionId();
}
else
{
// Pretend that we are cross context when call is crossing script file.
functionId = CallSiteCrossContext;
}
}
else
{
functionId = CallSiteCrossContext;
}
if (oldSourceId == NoSourceId)
{
callSiteInfo[callSiteId].u.functionData.sourceId = sourceId;
callSiteInfo[callSiteId].u.functionData.functionId = functionId;
this->currentInlinerVersion++; // we don't mind if this overflows
}
else if (oldSourceId != sourceId || oldFunctionId != functionId)
{
if (oldFunctionId != CallSiteMixed)
{
this->currentInlinerVersion++; // we don't mind if this overflows
}
callSiteInfo[callSiteId].u.functionData.functionId = CallSiteMixed;
doInline = false;
}
callSiteInfo[callSiteId].isConstructorCall = false;
callSiteInfo[callSiteId].dontInline = !doInline;
callSiteInfo[callSiteId].ldFldInlineCacheId = Js::Constants::NoInlineCacheIndex;
}
#endif
void DynamicProfileInfo::RecordCallSiteInfo(FunctionBody* functionBody, ProfileId callSiteId, FunctionInfo* calleeFunctionInfo, JavascriptFunction* calleeFunction, ArgSlot actualArgCount, bool isConstructorCall, InlineCacheIndex ldFldInlineCacheId)
{
#if DBG_DUMP || defined(DYNAMIC_PROFILE_STORAGE) || defined(RUNTIME_DATA_COLLECTION)
// If we persistsAcrossScriptContext, the dynamic profile info may be referred to by multiple function body from
// different script context
Assert(!DynamicProfileInfo::NeedProfileInfoList() || this->persistsAcrossScriptContexts || this->functionBody == functionBody);
#endif
bool doInline = true;
// This is a hard limit as we only use 4 bits to encode the actual count in the InlineeCallInfo
if (actualArgCount > Js::InlineeCallInfo::MaxInlineeArgoutCount)
{
doInline = false;
}
// Mark the callsite bit where caller and callee is same function
if (calleeFunctionInfo && functionBody == calleeFunctionInfo->GetFunctionProxy() && callSiteId < 32)
{
this->m_recursiveInlineInfo = this->m_recursiveInlineInfo | (1 << callSiteId);
}
if (!callSiteInfo[callSiteId].isPolymorphic)
{
Js::SourceId oldSourceId = callSiteInfo[callSiteId].u.functionData.sourceId;
if (oldSourceId == InvalidSourceId)
{
return;
}
Js::LocalFunctionId oldFunctionId = callSiteInfo[callSiteId].u.functionData.functionId;
Js::SourceId sourceId = InvalidSourceId;
Js::LocalFunctionId functionId;
if (calleeFunctionInfo == nullptr)
{
functionId = CallSiteNonFunction;
}
else if (!calleeFunctionInfo->HasBody())
{
Assert(calleeFunction); // calleeFunction can only be passed as null if the calleeFunctionInfo was null (which is checked above)
if (functionBody->GetScriptContext() == calleeFunction->GetScriptContext())
{
sourceId = BuiltInSourceId;
functionId = calleeFunctionInfo->GetLocalFunctionId();
}
else
{
functionId = CallSiteCrossContext;
}
}
else
{
// We can only inline function that are from the same script context. So only record that data
// We're about to call this function so deserialize it right now
FunctionProxy* calleeFunctionProxy = calleeFunctionInfo->GetFunctionProxy();
if (functionBody->GetScriptContext() == calleeFunctionProxy->GetScriptContext())
{
if (functionBody->GetSecondaryHostSourceContext() == calleeFunctionProxy->GetSecondaryHostSourceContext())
{
if (functionBody->GetHostSourceContext() == calleeFunctionProxy->GetHostSourceContext())
{
sourceId = CurrentSourceId; // Caller and callee in same file
}
else
{
sourceId = (Js::SourceId)calleeFunctionProxy->GetHostSourceContext(); // Caller and callee in different files
}
functionId = calleeFunctionProxy->GetLocalFunctionId();
}
else
{
// Pretend that we are cross context when call is crossing script file.
functionId = CallSiteCrossContext;
}
}
else
{
functionId = CallSiteCrossContext;
}
}
if (oldSourceId == NoSourceId)
{
callSiteInfo[callSiteId].u.functionData.sourceId = sourceId;
callSiteInfo[callSiteId].u.functionData.functionId = functionId;
this->currentInlinerVersion++; // we don't mind if this overflows
}
else if (oldSourceId != sourceId || oldFunctionId != functionId)
{
if (oldFunctionId != CallSiteMixed)
{
this->currentInlinerVersion++; // we don't mind if this overflows
}
if (doInline && IsPolymorphicCallSite(functionId, sourceId, oldFunctionId, oldSourceId))
{
CreatePolymorphicDynamicProfileCallSiteInfo(functionBody, callSiteId, functionId, oldFunctionId, sourceId, oldSourceId);
}
else
{
callSiteInfo[callSiteId].u.functionData.functionId = CallSiteMixed;
}
}
callSiteInfo[callSiteId].isConstructorCall = isConstructorCall;
callSiteInfo[callSiteId].dontInline = !doInline;
callSiteInfo[callSiteId].ldFldInlineCacheId = ldFldInlineCacheId;
}
else
{
Assert(doInline);
Assert(callSiteInfo[callSiteId].isConstructorCall == isConstructorCall);
RecordPolymorphicCallSiteInfo(functionBody, callSiteId, calleeFunctionInfo);
}
return;
}
bool DynamicProfileInfo::IsPolymorphicCallSite(Js::LocalFunctionId curFunctionId, Js::SourceId curSourceId, Js::LocalFunctionId oldFunctionId, Js::SourceId oldSourceId)
{
AssertMsg(oldSourceId != NoSourceId, "There is no previous call in this callsite, we shouldn't be checking for polymorphic");
if (oldSourceId == NoSourceId || oldSourceId == InvalidSourceId || oldSourceId == BuiltInSourceId)
{
return false;
}
if (curFunctionId == CallSiteCrossContext || curFunctionId == CallSiteNonFunction || oldFunctionId == CallSiteMixed || oldFunctionId == CallSiteCrossContext)
{
return false;
}
Assert(oldFunctionId != CallSiteNonFunction);
Assert(curFunctionId != oldFunctionId || curSourceId != oldSourceId);
return true;
}
void DynamicProfileInfo::CreatePolymorphicDynamicProfileCallSiteInfo(FunctionBody *funcBody, ProfileId callSiteId, Js::LocalFunctionId functionId, Js::LocalFunctionId oldFunctionId, Js::SourceId sourceId, Js::SourceId oldSourceId)
{
PolymorphicCallSiteInfo *localPolyCallSiteInfo = RecyclerNewStructZ(funcBody->GetScriptContext()->GetRecycler(), PolymorphicCallSiteInfo);
Assert(maxPolymorphicInliningSize >= 2);
localPolyCallSiteInfo->functionIds[0] = oldFunctionId;
localPolyCallSiteInfo->functionIds[1] = functionId;
localPolyCallSiteInfo->sourceIds[0] = oldSourceId;
localPolyCallSiteInfo->sourceIds[1] = sourceId;
localPolyCallSiteInfo->next = funcBody->GetPolymorphicCallSiteInfoHead();
for (int i = 2; i < maxPolymorphicInliningSize; i++)
{
localPolyCallSiteInfo->functionIds[i] = CallSiteNoInfo;
}
callSiteInfo[callSiteId].isPolymorphic = true;
callSiteInfo[callSiteId].u.polymorphicCallSiteInfo = localPolyCallSiteInfo;
funcBody->SetPolymorphicCallSiteInfoHead(localPolyCallSiteInfo);
}
void DynamicProfileInfo::ResetAllPolymorphicCallSiteInfo()
{
if (dynamicProfileFunctionInfo)
{
for (ProfileId i = 0; i < dynamicProfileFunctionInfo->callSiteInfoCount; i++)
{
if (callSiteInfo[i].isPolymorphic)
{
ResetPolymorphicCallSiteInfo(i, CallSiteMixed);
}
}
}
}
void DynamicProfileInfo::ResetPolymorphicCallSiteInfo(ProfileId callSiteId, Js::LocalFunctionId functionId)
{
callSiteInfo[callSiteId].isPolymorphic = false;
callSiteInfo[callSiteId].u.functionData.sourceId = CurrentSourceId;
callSiteInfo[callSiteId].u.functionData.functionId = functionId;
this->currentInlinerVersion++;
}
void DynamicProfileInfo::SetFunctionIdSlotForNewPolymorphicCall(ProfileId callSiteId, Js::LocalFunctionId curFunctionId, Js::SourceId curSourceId, Js::FunctionBody *inliner)
{
for (int i = 0; i < maxPolymorphicInliningSize; i++)
{
if (callSiteInfo[callSiteId].u.polymorphicCallSiteInfo->functionIds[i] == curFunctionId &&
callSiteInfo[callSiteId].u.polymorphicCallSiteInfo->sourceIds[i] == curSourceId)
{
// we have it already
return;
}
else if (callSiteInfo[callSiteId].u.polymorphicCallSiteInfo->functionIds[i] == CallSiteNoInfo)
{
callSiteInfo[callSiteId].u.polymorphicCallSiteInfo->functionIds[i] = curFunctionId;
callSiteInfo[callSiteId].u.polymorphicCallSiteInfo->sourceIds[i] = curSourceId;
this->currentInlinerVersion++;
return;
}
}
#ifdef ENABLE_DEBUG_CONFIG_OPTIONS
if (Js::Configuration::Global.flags.TestTrace.IsEnabled(Js::PolymorphicInlinePhase))
{
char16 debugStringBuffer[MAX_FUNCTION_BODY_DEBUG_STRING_SIZE];
Output::Print(_u("INLINING (Polymorphic): More than 4 functions at this call site \t callSiteId: %d\t calleeFunctionId: %d TopFunc %s (%s)\n"),
callSiteId,
curFunctionId,
inliner->GetDisplayName(),
inliner->GetDebugNumberSet(debugStringBuffer)
);
Output::Flush();
}
#endif
#ifdef PERF_HINT
if (PHASE_TRACE1(Js::PerfHintPhase))
{
WritePerfHint(PerfHints::PolymorphicInilineCap, inliner);
}
#endif
// We reached the max allowed to inline, no point in continuing collecting the information. Reset and move on.
ResetPolymorphicCallSiteInfo(callSiteId, CallSiteMixed);
}
void DynamicProfileInfo::RecordPolymorphicCallSiteInfo(FunctionBody* functionBody, ProfileId callSiteId, FunctionInfo * calleeFunctionInfo)
{
Js::LocalFunctionId functionId;
if (calleeFunctionInfo == nullptr || !calleeFunctionInfo->HasBody())
{
return ResetPolymorphicCallSiteInfo(callSiteId, CallSiteMixed);
}
// We can only inline function that are from the same script context. So only record that data
// We're about to call this function so deserialize it right now.
FunctionProxy* calleeFunctionProxy = calleeFunctionInfo->GetFunctionProxy();
if (functionBody->GetScriptContext() == calleeFunctionProxy->GetScriptContext())
{
if (functionBody->GetSecondaryHostSourceContext() == calleeFunctionProxy->GetSecondaryHostSourceContext())
{
Js::SourceId sourceId = (Js::SourceId)calleeFunctionProxy->GetHostSourceContext();
if (functionBody->GetHostSourceContext() == sourceId) // if caller and callee in same file
{
sourceId = CurrentSourceId;
}
functionId = calleeFunctionProxy->GetLocalFunctionId();
SetFunctionIdSlotForNewPolymorphicCall(callSiteId, functionId, sourceId, functionBody);
return;
}
}
// Pretend that we are cross context when call is crossing script file.
ResetPolymorphicCallSiteInfo(callSiteId, CallSiteCrossContext);
}
/* static */
bool DynamicProfileInfo::HasCallSiteInfo(FunctionBody* functionBody)
{
SourceContextInfo *sourceContextInfo = functionBody->GetSourceContextInfo();
return !functionBody->GetScriptContext()->IsNoContextSourceContextInfo(sourceContextInfo);
}
bool DynamicProfileInfo::GetPolymorphicCallSiteInfo(FunctionBody* functionBody, ProfileId callSiteId, bool *isConstructorCall, __inout_ecount(functionBodyArrayLength) FunctionBody** functionBodyArray, uint functionBodyArrayLength)
{
Assert(functionBody);
const auto callSiteCount = functionBody->GetProfiledCallSiteCount();
Assert(callSiteId < callSiteCount);
Assert(HasCallSiteInfo(functionBody));
Assert(functionBodyArray);
Assert(functionBodyArrayLength == DynamicProfileInfo::maxPolymorphicInliningSize);
*isConstructorCall = callSiteInfo[callSiteId].isConstructorCall;
if (callSiteInfo[callSiteId].dontInline)
{
return false;
}
if (callSiteInfo[callSiteId].isPolymorphic)
{
PolymorphicCallSiteInfo *polymorphicCallSiteInfo = callSiteInfo[callSiteId].u.polymorphicCallSiteInfo;
for (uint i = 0; i < functionBodyArrayLength; i++)
{
Js::LocalFunctionId localFunctionId;
Js::SourceId localSourceId;
if (!polymorphicCallSiteInfo->GetFunction(i, &localFunctionId, &localSourceId))
{
AssertMsg(i >= 2, "We found at least two function Body");
return true;
}
FunctionBody* matchedFunctionBody;
if (localSourceId == CurrentSourceId) // caller and callee in same file
{
matchedFunctionBody = functionBody->GetUtf8SourceInfo()->FindFunction(localFunctionId);
if (!matchedFunctionBody)
{
return false;
}
functionBodyArray[i] = matchedFunctionBody;
}
else if (localSourceId == NoSourceId || localSourceId == InvalidSourceId)
{
return false;
}
else
{
// For call across files find the function from the right source
typedef JsUtil::List<RecyclerWeakReference<Utf8SourceInfo>*, Recycler, false, Js::FreeListedRemovePolicy> SourceList;
SourceList * sourceList = functionBody->GetScriptContext()->GetSourceList();
bool found = false;
for (int j = 0; j < sourceList->Count() && !found; j++)
{
if (sourceList->IsItemValid(j))
{
Utf8SourceInfo *srcInfo = sourceList->Item(j)->Get();
if (srcInfo && srcInfo->GetHostSourceContext() == localSourceId)
{
matchedFunctionBody = srcInfo->FindFunction(localFunctionId);
if (!matchedFunctionBody)
{
return false;
}
functionBodyArray[i] = matchedFunctionBody;
found = true;
}
}
}
if (!found)
{
return false;
}
}
}
return true;
}
return false;
}
bool DynamicProfileInfo::HasCallSiteInfo(FunctionBody* functionBody, ProfileId callSiteId)
{
Assert(functionBody);
const auto callSiteCount = functionBody->GetProfiledCallSiteCount();
Assert(callSiteId < callSiteCount);
Assert(HasCallSiteInfo(functionBody));
if (callSiteInfo[callSiteId].isPolymorphic)
{
return true;
}
return callSiteInfo[callSiteId].u.functionData.sourceId != NoSourceId;
}
FunctionInfo * DynamicProfileInfo::GetCallSiteInfo(FunctionBody* functionBody, ProfileId callSiteId, bool *isConstructorCall, bool *isPolymorphicCall)
{
Assert(functionBody);
const auto callSiteCount = functionBody->GetProfiledCallSiteCount();
Assert(callSiteId < callSiteCount);
Assert(HasCallSiteInfo(functionBody));
*isConstructorCall = callSiteInfo[callSiteId].isConstructorCall;
if (callSiteInfo[callSiteId].dontInline)
{
return nullptr;
}
if (!callSiteInfo[callSiteId].isPolymorphic)
{
Js::SourceId sourceId = callSiteInfo[callSiteId].u.functionData.sourceId;
Js::LocalFunctionId functionId = callSiteInfo[callSiteId].u.functionData.functionId;
if (sourceId == BuiltInSourceId)
{
return JavascriptBuiltInFunction::GetFunctionInfo(functionId);
}
if (sourceId == CurrentSourceId) // caller and callee in same file
{
FunctionProxy *inlineeProxy = functionBody->GetUtf8SourceInfo()->FindFunction(functionId);
return inlineeProxy ? inlineeProxy->GetFunctionInfo() : nullptr;
}
if (sourceId != NoSourceId && sourceId != InvalidSourceId)
{
// For call across files find the function from the right source
JsUtil::List<RecyclerWeakReference<Utf8SourceInfo>*, Recycler, false, Js::FreeListedRemovePolicy> * sourceList = functionBody->GetScriptContext()->GetSourceList();
for (int i = 0; i < sourceList->Count(); i++)
{
if (sourceList->IsItemValid(i))
{
Utf8SourceInfo *srcInfo = sourceList->Item(i)->Get();
if (srcInfo && srcInfo->GetHostSourceContext() == sourceId)
{
FunctionProxy *inlineeProxy = srcInfo->FindFunction(functionId);
return inlineeProxy ? inlineeProxy->GetFunctionInfo() : nullptr;
}
}
}
}
}
else
{
*isPolymorphicCall = true;
}
return nullptr;
}
uint DynamicProfileInfo::GetLdFldCacheIndexFromCallSiteInfo(FunctionBody* functionBody, ProfileId callSiteId)
{
Assert(functionBody);
const auto callSiteCount = functionBody->GetProfiledCallSiteCount();
Assert(callSiteId < callSiteCount);
Assert(HasCallSiteInfo(functionBody));
return callSiteInfo[callSiteId].ldFldInlineCacheId;
}
void DynamicProfileInfo::RecordElementLoad(FunctionBody* functionBody, ProfileId ldElemId, const LdElemInfo& info)
{
Assert(ldElemId < functionBody->GetProfiledLdElemCount());
Assert(info.WasProfiled());
ldElemInfo[ldElemId].Merge(info);
}
void DynamicProfileInfo::RecordElementLoadAsProfiled(FunctionBody *const functionBody, const ProfileId ldElemId)
{
Assert(ldElemId < functionBody->GetProfiledLdElemCount());
ldElemInfo[ldElemId].wasProfiled = true;
}
void DynamicProfileInfo::RecordElementStore(FunctionBody* functionBody, ProfileId stElemId, const StElemInfo& info)
{
Assert(stElemId < functionBody->GetProfiledStElemCount());
Assert(info.WasProfiled());
stElemInfo[stElemId].Merge(info);
}
void DynamicProfileInfo::RecordElementStoreAsProfiled(FunctionBody *const functionBody, const ProfileId stElemId)
{
Assert(stElemId < functionBody->GetProfiledStElemCount());
stElemInfo[stElemId].wasProfiled = true;
}
ArrayCallSiteInfo * DynamicProfileInfo::GetArrayCallSiteInfo(FunctionBody *functionBody, ProfileId index) const
{
Assert(index < functionBody->GetProfiledArrayCallSiteCount());
return &arrayCallSiteInfo[index];
}
void DynamicProfileInfo::RecordFieldAccess(FunctionBody* functionBody, uint fieldAccessId, Var object, FldInfoFlags flags)
{
Assert(fieldAccessId < functionBody->GetProfiledFldCount());
FldInfoFlags oldFlags = fldInfo[fieldAccessId].flags;
if (object) // if not provided, the saved value type is not changed
{
fldInfo[fieldAccessId].valueType = fldInfo[fieldAccessId].valueType.Merge(object);
}
const auto mergedFlags = MergeFldInfoFlags(oldFlags, flags);
fldInfo[fieldAccessId].flags = mergedFlags;
if (flags & FldInfo_Polymorphic)
{
bits.hasPolymorphicFldAccess = true;
if (!(oldFlags & FldInfo_Polymorphic))
{
this->SetHasNewPolyFieldAccess(functionBody);
}
if (fldInfo[fieldAccessId].polymorphicInlineCacheUtilization < (PolymorphicInlineCacheUtilizationMaxValue - PolymorphicInlineCacheUtilizationIncrement))
{
fldInfo[fieldAccessId].polymorphicInlineCacheUtilization += PolymorphicInlineCacheUtilizationIncrement;
}
else
{
fldInfo[fieldAccessId].polymorphicInlineCacheUtilization = PolymorphicInlineCacheUtilizationMaxValue;
}
}
else if (flags != FldInfo_NoInfo &&
fldInfo[fieldAccessId].polymorphicInlineCacheUtilization != PolymorphicInlineCacheUtilizationMaxValue)
{
if (fldInfo[fieldAccessId].polymorphicInlineCacheUtilization > (PolymorphicInlineCacheUtilizationMinValue + PolymorphicInlineCacheUtilizationDecrement))
{
fldInfo[fieldAccessId].polymorphicInlineCacheUtilization -= PolymorphicInlineCacheUtilizationDecrement;
}
else
{
fldInfo[fieldAccessId].polymorphicInlineCacheUtilization = PolymorphicInlineCacheUtilizationMinValue;
}
}
}
void DynamicProfileInfo::RecordDivideResultType(FunctionBody* body, ProfileId divideId, Var object)
{
Assert(divideId < body->GetProfiledDivOrRemCount());
divideTypeInfo[divideId] = divideTypeInfo[divideId].Merge(object);
}
// We are overloading the value types to store whether it is a mod by power of 2.
// TaggedInt:
void DynamicProfileInfo::RecordModulusOpType(FunctionBody* body,
ProfileId profileId, bool isModByPowerOf2)
{
Assert(profileId < body->GetProfiledDivOrRemCount());
/* allow one op of the modulus to be optimized - anyway */
if (divideTypeInfo[profileId].IsUninitialized())
{
divideTypeInfo[profileId] = ValueType::GetInt(true);