| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_DEOPTIMIZER_DEOPTIMIZE_REASON_H_ |
| #define V8_DEOPTIMIZER_DEOPTIMIZE_REASON_H_ |
| |
| #include "src/common/globals.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| #define DEOPTIMIZE_REASON_LIST(V) \ |
| V(ArrayBufferWasDetached, "array buffer was detached") \ |
| V(BigIntTooBig, "BigInt too big") \ |
| V(CowArrayElementsChanged, "copy-on-write array's elements changed") \ |
| V(CouldNotGrowElements, "failed to grow elements store") \ |
| V(PrepareForOnStackReplacement, "prepare for on stack replacement (OSR)") \ |
| V(DeoptimizeNow, "%_DeoptimizeNow") \ |
| V(DivisionByZero, "division by zero") \ |
| V(Hole, "hole") \ |
| V(InstanceMigrationFailed, "instance migration failed") \ |
| V(InsufficientTypeFeedbackForCall, "Insufficient type feedback for call") \ |
| V(InsufficientTypeFeedbackForConstruct, \ |
| "Insufficient type feedback for construct") \ |
| V(InsufficientTypeFeedbackForForIn, "Insufficient type feedback for for-in") \ |
| V(InsufficientTypeFeedbackForBinaryOperation, \ |
| "Insufficient type feedback for binary operation") \ |
| V(InsufficientTypeFeedbackForCompareOperation, \ |
| "Insufficient type feedback for compare operation") \ |
| V(InsufficientTypeFeedbackForGenericNamedAccess, \ |
| "Insufficient type feedback for generic named access") \ |
| V(InsufficientTypeFeedbackForGenericKeyedAccess, \ |
| "Insufficient type feedback for generic keyed access") \ |
| V(InsufficientTypeFeedbackForUnaryOperation, \ |
| "Insufficient type feedback for unary operation") \ |
| V(LostPrecision, "lost precision") \ |
| V(LostPrecisionOrNaN, "lost precision or NaN") \ |
| V(MinusZero, "minus zero") \ |
| V(NaN, "NaN") \ |
| V(NoCache, "no cache") \ |
| V(NotABigInt, "not a BigInt") \ |
| V(NotABigInt64, "not a BigInt64") \ |
| V(NotAHeapNumber, "not a heap number") \ |
| V(NotAJavaScriptObject, "not a JavaScript object") \ |
| V(NotAJavaScriptObjectOrNullOrUndefined, \ |
| "not a JavaScript object, Null or Undefined") \ |
| V(NotANumber, "not a Number") \ |
| V(NotANumberOrBoolean, "not a Number or Boolean") \ |
| V(NotANumberOrOddball, "not a Number or Oddball") \ |
| V(NotAnArrayIndex, "not an array index") \ |
| V(NotASmi, "not a Smi") \ |
| V(NotAString, "not a String") \ |
| V(NotASymbol, "not a Symbol") \ |
| V(NotInt32, "not int32") \ |
| V(NotUint32, "not unsigned int32") \ |
| V(OutOfBounds, "out of bounds") \ |
| V(Overflow, "overflow") \ |
| V(Smi, "Smi") \ |
| V(StoreToConstant, "Storing to a constant field") \ |
| V(SuspendGeneratorIsDead, "SuspendGenerator is in a dead branch") \ |
| V(TransitionedToMonomorphicIC, "IC transitioned to monomorphic") \ |
| V(TransitionedToMegamorphicIC, "IC transitioned to megamorphic") \ |
| V(Unknown, "(unknown)") \ |
| V(ValueMismatch, "value mismatch") \ |
| V(WrongCallTarget, "wrong call target") \ |
| V(WrongEnumIndices, "wrong enum indices") \ |
| V(WrongFeedbackCell, "wrong feedback cell") \ |
| V(WrongInstanceType, "wrong instance type") \ |
| V(WrongMap, "wrong map") \ |
| V(MissingMap, "missing map") \ |
| V(DeprecatedMap, "deprecated map") \ |
| V(WrongHandler, "wrong handler") \ |
| V(WrongName, "wrong name") \ |
| V(WrongValue, "wrong value") \ |
| V(NoInitialElement, "no initial element") \ |
| V(ArrayLengthChanged, "the array length changed") |
| |
| enum class DeoptimizeReason : uint8_t { |
| #define DEOPTIMIZE_REASON(Name, message) k##Name, |
| DEOPTIMIZE_REASON_LIST(DEOPTIMIZE_REASON) |
| #undef DEOPTIMIZE_REASON |
| }; |
| |
| constexpr DeoptimizeReason kFirstDeoptimizeReason = |
| DeoptimizeReason::kArrayBufferWasDetached; |
| constexpr DeoptimizeReason kLastDeoptimizeReason = |
| DeoptimizeReason::kArrayLengthChanged; |
| static_assert(static_cast<int>(kFirstDeoptimizeReason) == 0); |
| constexpr int kDeoptimizeReasonCount = |
| static_cast<int>(kLastDeoptimizeReason) + 1; |
| |
| V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream&, DeoptimizeReason); |
| |
| size_t hash_value(DeoptimizeReason reason); |
| |
| V8_EXPORT_PRIVATE char const* DeoptimizeReasonToString(DeoptimizeReason reason); |
| |
| constexpr bool IsDeoptimizationWithoutCodeInvalidation( |
| DeoptimizeReason reason) { |
| // Maglev OSRs into Turbofan by first deoptimizing in order to restore the |
| // unoptimized frame layout. Since no actual assumptions in the Maglev code |
| // object are violated, it (and any associated cached optimized code) should |
| // not be invalidated s.t. we may reenter it in the future. |
| return reason == DeoptimizeReason::kPrepareForOnStackReplacement; |
| } |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_DEOPTIMIZER_DEOPTIMIZE_REASON_H_ |
