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Mini Shell
Mini Shell
// Copyright 2020 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.
namespace ic {
// --- The public interface (forwards to the actual implementation).
@export
macro CollectCallFeedback(
maybeTarget: JSAny, maybeReceiver: Lazy<JSAny>, context: Context,
maybeFeedbackVector: Undefined|FeedbackVector, slotId: uintptr): void {
callable::CollectCallFeedback(
maybeTarget, maybeReceiver, context, maybeFeedbackVector, slotId);
}
@export
macro CollectInstanceOfFeedback(
maybeTarget: JSAny, context: Context,
maybeFeedbackVector: Undefined|FeedbackVector, slotId: uintptr): void {
callable::CollectInstanceOfFeedback(
maybeTarget, context, maybeFeedbackVector, slotId);
}
@export
macro CollectConstructFeedback(
implicit context: Context)(target: JSAny, newTarget: JSAny,
maybeFeedbackVector: Undefined|FeedbackVector, slotId: uintptr,
updateFeedbackMode: constexpr UpdateFeedbackMode):
never labels ConstructGeneric,
ConstructArray(AllocationSite) {
callable::CollectConstructFeedback(
target, newTarget, maybeFeedbackVector, slotId, updateFeedbackMode)
otherwise ConstructGeneric, ConstructArray;
}
// --- Common functionality.
extern macro MegamorphicSymbolConstant(): Symbol;
extern macro UninitializedSymbolConstant(): Symbol;
const kMegamorphicSymbol: Symbol = MegamorphicSymbolConstant();
const kUninitializedSymbol: Symbol = UninitializedSymbolConstant();
macro IsMegamorphic(feedback: MaybeObject): bool {
return TaggedEqual(feedback, kMegamorphicSymbol);
}
macro IsUninitialized(feedback: MaybeObject): bool {
return TaggedEqual(feedback, kUninitializedSymbol);
}
extern macro LoadFeedbackVectorSlot(FeedbackVector, uintptr): MaybeObject;
extern macro LoadFeedbackVectorSlot(FeedbackVector, uintptr, constexpr int32):
MaybeObject;
extern operator '[]' macro LoadFeedbackVectorSlot(FeedbackVector, intptr):
MaybeObject;
extern macro StoreFeedbackVectorSlot(FeedbackVector, uintptr, MaybeObject):
void;
extern macro StoreFeedbackVectorSlot(
FeedbackVector, uintptr, MaybeObject, constexpr WriteBarrierMode,
constexpr int32): void;
extern macro StoreWeakReferenceInFeedbackVector(
FeedbackVector, uintptr, HeapObject): MaybeObject;
extern macro ReportFeedbackUpdate(FeedbackVector, uintptr, constexpr string):
void;
extern operator '.length_intptr' macro LoadFeedbackVectorLength(FeedbackVector):
intptr;
} // namespace ic
Zerion Mini Shell 1.0