c78d7fa1ae
Previously, both type feedback vector and the shared function info of a function points to the matching type feedback metadata. This makes finding the shared function info of a type feedback vector difficult. Instead, we now point the type feeback vector to the shared function info, and find the metadata through the shared function info. Also remove the obsolete empty type feedback vector. R=hpayer@chromium.org, mvstanton@chromium.org BUG=v8:5808 Review-Url: https://codereview.chromium.org/2672363002 Cr-Commit-Position: refs/heads/master@{#43026}
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_TEST_FEEDBACK_VECTOR_H_
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#define V8_TEST_FEEDBACK_VECTOR_H_
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#include "src/objects.h"
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namespace v8 {
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namespace internal {
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// Helper class that allows to write tests in a slot size independent manner.
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// Use helper.slot(X) to get X'th slot identifier.
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class FeedbackVectorHelper {
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public:
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explicit FeedbackVectorHelper(Handle<FeedbackVector> vector)
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: vector_(vector) {
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int slot_count = vector->slot_count();
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slots_.reserve(slot_count);
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FeedbackMetadataIterator iter(vector->metadata());
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while (iter.HasNext()) {
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FeedbackSlot slot = iter.Next();
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slots_.push_back(slot);
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}
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}
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Handle<FeedbackVector> vector() { return vector_; }
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// Returns slot identifier by numerical index.
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FeedbackSlot slot(int index) const { return slots_[index]; }
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// Returns the number of slots in the feedback vector.
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int slot_count() const { return static_cast<int>(slots_.size()); }
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private:
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Handle<FeedbackVector> vector_;
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std::vector<FeedbackSlot> slots_;
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};
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template <typename Spec>
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Handle<FeedbackVector> NewFeedbackVector(Isolate* isolate, Spec* spec) {
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Handle<FeedbackMetadata> metadata = FeedbackMetadata::New(isolate, spec);
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Handle<SharedFunctionInfo> shared = isolate->factory()->NewSharedFunctionInfo(
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isolate->factory()->empty_string(), MaybeHandle<Code>(), false);
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shared->set_feedback_metadata(*metadata);
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return FeedbackVector::New(isolate, shared);
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}
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template <typename Spec>
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Handle<FeedbackMetadata> NewFeedbackMetadata(Isolate* isolate, Spec* spec) {
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return FeedbackMetadata::New(isolate, spec);
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}
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} // namespace internal
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} // namespace v8
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#endif
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