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FTLCapabilities.cpp
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565 lines (541 loc) · 15.9 KB
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/*
* Copyright (C) 2013-2020 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 "FTLCapabilities.h"
#if ENABLE(FTL_JIT)
namespace JSC { namespace FTL {
using namespace DFG;
static bool verboseCapabilities()
{
return verboseCompilationEnabled() || Options::verboseFTLFailure();
}
inline CapabilityLevel canCompile(Node* node)
{
// NOTE: If we ever have phantom arguments, we can compile them but we cannot
// OSR enter.
switch (node->op()) {
case JSConstant:
case LazyJSConstant:
case GetLocal:
case SetLocal:
case PutStack:
case KillStack:
case GetStack:
case MovHint:
case ExitOK:
case Phantom:
case Flush:
case PhantomLocal:
case SetArgumentDefinitely:
case SetArgumentMaybe:
case Return:
case ArithBitNot:
case ArithBitAnd:
case ArithBitOr:
case ArithBitXor:
case ArithBitRShift:
case ArithBitLShift:
case BitURShift:
case CheckStructure:
case CheckStructureOrEmpty:
case DoubleAsInt32:
case Arrayify:
case ArrayifyToStructure:
case PutStructure:
case GetButterfly:
case NewObject:
case NewGenerator:
case NewAsyncGenerator:
case NewStringObject:
case NewSymbol:
case NewArray:
case NewArrayWithSpread:
case NewInternalFieldObject:
case Spread:
case NewArrayBuffer:
case NewTypedArray:
case GetByOffset:
case GetGetterSetterByOffset:
case GetGetter:
case GetSetter:
case PutByOffset:
case GetGlobalVar:
case GetGlobalLexicalVariable:
case PutGlobalVariable:
case ValueBitAnd:
case ValueBitXor:
case ValueBitOr:
case ValueBitNot:
case ValueBitLShift:
case ValueBitRShift:
case ValueNegate:
case ValueAdd:
case ValueSub:
case ValueMul:
case ValueDiv:
case ValueMod:
case ValuePow:
case Inc:
case Dec:
case StrCat:
case ArithAdd:
case ArithClz32:
case ArithSub:
case ArithMul:
case ArithDiv:
case ArithMod:
case ArithMin:
case ArithMax:
case ArithAbs:
case ArithPow:
case ArithRandom:
case ArithRound:
case ArithFloor:
case ArithCeil:
case ArithTrunc:
case ArithSqrt:
case ArithFRound:
case ArithNegate:
case ArithUnary:
case UInt32ToNumber:
case Jump:
case ForceOSRExit:
case Phi:
case Upsilon:
case ExtractOSREntryLocal:
case ExtractCatchLocal:
case ClearCatchLocals:
case LoopHint:
case SkipScope:
case GetGlobalObject:
case GetGlobalThis:
case CreateActivation:
case PushWithScope:
case NewFunction:
case NewGeneratorFunction:
case NewAsyncFunction:
case NewAsyncGeneratorFunction:
case GetClosureVar:
case PutClosureVar:
case GetInternalField:
case PutInternalField:
case CreateDirectArguments:
case CreateScopedArguments:
case CreateClonedArguments:
case CreateArgumentsButterfly:
case GetFromArguments:
case PutToArguments:
case GetArgument:
case InvalidationPoint:
case StringCharAt:
case CheckIsConstant:
case CheckBadValue:
case CheckNotEmpty:
case AssertNotEmpty:
case CheckIdent:
case CheckTraps:
case StringCharCodeAt:
case StringCodePointAt:
case StringFromCharCode:
case AllocatePropertyStorage:
case ReallocatePropertyStorage:
case NukeStructureAndSetButterfly:
case GetTypedArrayByteOffset:
case GetPrototypeOf:
case NotifyWrite:
case StoreBarrier:
case FencedStoreBarrier:
case Call:
case DirectCall:
case TailCall:
case DirectTailCall:
case TailCallInlinedCaller:
case DirectTailCallInlinedCaller:
case Construct:
case DirectConstruct:
case CallVarargs:
case CallEval:
case TailCallVarargs:
case TailCallVarargsInlinedCaller:
case ConstructVarargs:
case CallForwardVarargs:
case TailCallForwardVarargs:
case TailCallForwardVarargsInlinedCaller:
case ConstructForwardVarargs:
case VarargsLength:
case LoadVarargs:
case ValueToInt32:
case Branch:
case LogicalNot:
case AssertInBounds:
case CheckInBounds:
case ConstantStoragePointer:
case Check:
case CheckVarargs:
case CheckArray:
case CheckArrayOrEmpty:
case CheckNeutered:
case CountExecution:
case SuperSamplerBegin:
case SuperSamplerEnd:
case GetExecutable:
case GetScope:
case GetCallee:
case SetCallee:
case GetArgumentCountIncludingThis:
case SetArgumentCountIncludingThis:
case ToNumber:
case ToNumeric:
case ToString:
case ToObject:
case CallObjectConstructor:
case CallStringConstructor:
case CallNumberConstructor:
case ObjectCreate:
case ObjectKeys:
case ObjectGetOwnPropertyNames:
case MakeRope:
case NewArrayWithSize:
case TryGetById:
case GetById:
case GetByIdFlush:
case GetByIdWithThis:
case GetByIdDirect:
case GetByIdDirectFlush:
case ToThis:
case MultiGetByOffset:
case MultiPutByOffset:
case MultiDeleteByOffset:
case ToPrimitive:
case ToPropertyKey:
case Throw:
case ThrowStaticError:
case Unreachable:
case InByVal:
case InById:
case HasOwnProperty:
case IsCellWithType:
case MapHash:
case NormalizeMapKey:
case GetMapBucket:
case GetMapBucketHead:
case GetMapBucketNext:
case LoadKeyFromMapBucket:
case LoadValueFromMapBucket:
case ExtractValueFromWeakMapGet:
case SetAdd:
case MapSet:
case WeakMapGet:
case WeakSetAdd:
case WeakMapSet:
case IsEmpty:
case TypeOfIsUndefined:
case TypeOfIsObject:
case TypeOfIsFunction:
case IsUndefinedOrNull:
case IsBoolean:
case IsNumber:
case IsBigInt:
case NumberIsInteger:
case IsObject:
case IsCallable:
case IsConstructor:
case IsTypedArrayView:
case CheckTypeInfoFlags:
case OverridesHasInstance:
case InstanceOf:
case InstanceOfCustom:
case DoubleRep:
case ValueRep:
case Int52Rep:
case DoubleConstant:
case Int52Constant:
case BooleanToNumber:
case HasGenericProperty:
case HasStructureProperty:
case HasOwnStructureProperty:
case InStructureProperty:
case HasIndexedProperty:
case GetDirectPname:
case GetEnumerableLength:
case GetIndexedPropertyStorage:
case GetPropertyEnumerator:
case GetEnumeratorStructurePname:
case GetEnumeratorGenericPname:
case ToIndexString:
case BottomValue:
case PhantomNewObject:
case PhantomNewFunction:
case PhantomNewGeneratorFunction:
case PhantomNewAsyncGeneratorFunction:
case PhantomNewAsyncFunction:
case PhantomNewInternalFieldObject:
case PhantomCreateActivation:
case PhantomNewRegexp:
case PutHint:
case CheckStructureImmediate:
case MaterializeNewObject:
case MaterializeCreateActivation:
case MaterializeNewInternalFieldObject:
case PhantomDirectArguments:
case PhantomCreateRest:
case PhantomSpread:
case PhantomNewArrayWithSpread:
case PhantomNewArrayBuffer:
case PhantomClonedArguments:
case GetMyArgumentByVal:
case GetMyArgumentByValOutOfBounds:
case ForwardVarargs:
case EntrySwitch:
case Switch:
case TypeOf:
case PutById:
case PutByIdDirect:
case PutByIdFlush:
case PutByIdWithThis:
case PutGetterById:
case PutSetterById:
case PutGetterSetterById:
case PutGetterByVal:
case PutSetterByVal:
case DeleteById:
case DeleteByVal:
case CreateRest:
case GetRestLength:
case RegExpExec:
case RegExpExecNonGlobalOrSticky:
case RegExpTest:
case RegExpMatchFast:
case RegExpMatchFastGlobal:
case NewRegexp:
case StringReplace:
case StringReplaceRegExp:
case GetRegExpObjectLastIndex:
case SetRegExpObjectLastIndex:
case RecordRegExpCachedResult:
case SetFunctionName:
case LogShadowChickenPrologue:
case LogShadowChickenTail:
case ResolveScope:
case ResolveScopeForHoistingFuncDeclInEval:
case GetDynamicVar:
case PutDynamicVar:
case CompareEq:
case CompareEqPtr:
case CompareLess:
case CompareLessEq:
case CompareGreater:
case CompareGreaterEq:
case CompareBelow:
case CompareBelowEq:
case CompareStrictEq:
case SameValue:
case DefineDataProperty:
case DefineAccessorProperty:
case StringValueOf:
case StringSlice:
case ToLowerCase:
case NumberToStringWithRadix:
case NumberToStringWithValidRadixConstant:
case CheckJSCast:
case CheckNotJSCast:
case CallDOM:
case CallDOMGetter:
case ArraySlice:
case ArrayIndexOf:
case ArrayPop:
case ArrayPush:
case ParseInt:
case AtomicsAdd:
case AtomicsAnd:
case AtomicsCompareExchange:
case AtomicsExchange:
case AtomicsLoad:
case AtomicsOr:
case AtomicsStore:
case AtomicsSub:
case AtomicsXor:
case AtomicsIsLockFree:
case InitializeEntrypointArguments:
case CPUIntrinsic:
case GetArrayLength:
case GetVectorLength:
case GetByVal:
case GetByValWithThis:
case PutByVal:
case PutByValAlias:
case PutByValDirect:
case PutByValWithThis:
case PutPrivateName:
case PutPrivateNameById:
case GetPrivateName:
case GetPrivateNameById:
case MatchStructure:
case FilterCallLinkStatus:
case FilterGetByStatus:
case FilterPutByIdStatus:
case FilterInByIdStatus:
case FilterDeleteByStatus:
case CreateThis:
case CreatePromise:
case CreateGenerator:
case CreateAsyncGenerator:
case DataViewGetInt:
case DataViewGetFloat:
case DataViewSet:
case DateGetInt32OrNaN:
case DateGetTime:
// These are OK.
break;
case Identity:
// No backend handles this because it will be optimized out. But we may check
// for capabilities before optimization. It would be a deep error to remove this
// case because it would prevent us from catching bugs where the FTL backend
// pipeline failed to optimize out an Identity.
break;
case IdentityWithProfile:
case CheckTierUpInLoop:
case CheckTierUpAndOSREnter:
case CheckTierUpAtReturn:
case FiatInt52:
case ArithIMul:
case ProfileType:
case ProfileControlFlow:
case LastNodeType:
return CannotCompile;
}
return CanCompileAndOSREnter;
}
CapabilityLevel canCompile(Graph& graph)
{
if (graph.m_codeBlock->bytecodeCost() > Options::maximumFTLCandidateBytecodeCost()) {
if (verboseCapabilities())
dataLog("FTL rejecting ", *graph.m_codeBlock, " because it's too big.\n");
return CannotCompile;
}
if (UNLIKELY(graph.m_codeBlock->ownerExecutable()->neverFTLOptimize())) {
if (verboseCapabilities())
dataLog("FTL rejecting ", *graph.m_codeBlock, " because it is marked as never FTL compile.\n");
return CannotCompile;
}
CapabilityLevel result = CanCompileAndOSREnter;
for (BlockIndex blockIndex = graph.numBlocks(); blockIndex--;) {
BasicBlock* block = graph.block(blockIndex);
if (!block)
continue;
// We don't care if we can compile blocks that the CFA hasn't visited.
if (!block->cfaHasVisited)
continue;
for (unsigned nodeIndex = 0; nodeIndex < block->size(); ++nodeIndex) {
Node* node = block->at(nodeIndex);
for (unsigned childIndex = graph.numChildren(node); childIndex--;) {
Edge edge = graph.child(node, childIndex);
if (!edge)
continue;
switch (edge.useKind()) {
case UntypedUse:
case Int32Use:
case KnownInt32Use:
case Int52RepUse:
case NumberUse:
case RealNumberUse:
case DoubleRepUse:
case DoubleRepRealUse:
case BooleanUse:
case KnownBooleanUse:
case CellUse:
case KnownCellUse:
case CellOrOtherUse:
case ObjectUse:
case ArrayUse:
case FunctionUse:
case ObjectOrOtherUse:
case StringUse:
case StringOrOtherUse:
case KnownStringUse:
case KnownPrimitiveUse:
case StringObjectUse:
case StringOrStringObjectUse:
case SymbolUse:
case AnyBigIntUse:
case BigInt32Use:
case HeapBigIntUse:
case DateObjectUse:
case MapObjectUse:
case SetObjectUse:
case WeakMapObjectUse:
case WeakSetObjectUse:
case DataViewObjectUse:
case FinalObjectUse:
case PromiseObjectUse:
case RegExpObjectUse:
case ProxyObjectUse:
case DerivedArrayUse:
case NotCellUse:
case NotCellNorBigIntUse:
case OtherUse:
case KnownOtherUse:
case MiscUse:
case StringIdentUse:
case NotStringVarUse:
case NotSymbolUse:
case AnyIntUse:
case DoubleRepAnyIntUse:
// These are OK.
break;
default:
// Don't know how to handle anything else.
if (verboseCapabilities()) {
dataLog("FTL rejecting node in ", *graph.m_codeBlock, " because of bad use kind: ", edge.useKind(), " in node:\n");
graph.dump(WTF::dataFile(), " ", node);
}
return CannotCompile;
}
}
switch (canCompile(node)) {
case CannotCompile:
if (verboseCapabilities()) {
dataLog("FTL rejecting node in ", *graph.m_codeBlock, ":\n");
graph.dump(WTF::dataFile(), " ", node);
}
return CannotCompile;
case CanCompile:
if (result == CanCompileAndOSREnter && verboseCompilationEnabled()) {
dataLog("FTL disabling OSR entry because of node:\n");
graph.dump(WTF::dataFile(), " ", node);
}
result = CanCompile;
break;
case CanCompileAndOSREnter:
break;
}
if (node->op() == ForceOSRExit)
break;
}
}
return result;
}
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)