e53845d41c
- Move NodeMarker to its own file, and introduce a non templatized base class. - Cleanup the include hell. - Sanitize the Node construction methods now that we got rid of that GenericNode/GenericGraph stuff. - Protect against NodeId overflow in Graph. - Various minor cleanups. TEST=cctest,mjsunit,unittests Review URL: https://codereview.chromium.org/838783002 Cr-Commit-Position: refs/heads/master@{#25977}
63 lines
1.5 KiB
C++
63 lines
1.5 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_COMPILER_NODE_MARKER_H_
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#define V8_COMPILER_NODE_MARKER_H_
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#include "src/base/macros.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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// Forward declarations.
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class Graph;
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class Node;
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// Marks are used during traversal of the graph to distinguish states of nodes.
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// Each node has a mark which is a monotonically increasing integer, and a
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// {NodeMarker} has a range of values that indicate states of a node.
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typedef uint32_t Mark;
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// Base class for templatized NodeMarkers.
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class NodeMarkerBase {
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public:
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NodeMarkerBase(Graph* graph, uint32_t num_states);
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Mark Get(Node* node);
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void Set(Node* node, Mark mark);
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private:
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Mark mark_min_;
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Mark mark_max_;
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DISALLOW_COPY_AND_ASSIGN(NodeMarkerBase);
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};
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// A NodeMarker uses monotonically increasing marks to assign local "states"
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// to nodes. Only one NodeMarker per graph is valid at a given time.
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template <typename State>
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class NodeMarker : public NodeMarkerBase {
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public:
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NodeMarker(Graph* graph, uint32_t num_states)
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: NodeMarkerBase(graph, num_states) {}
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State Get(Node* node) {
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return static_cast<State>(NodeMarkerBase::Get(node));
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}
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void Set(Node* node, State state) {
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NodeMarkerBase::Set(node, static_cast<Mark>(state));
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}
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};
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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#endif // V8_COMPILER_NODE_MARKER_H_
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