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src/compiler/node.h

+// Copyright 2013 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_COMPILER_NODE_H_
+#define V8_COMPILER_NODE_H_
+
+#include <deque>
+#include <set>
+#include <vector>
+
+#include "src/compiler/generic-algorithm.h"
+#include "src/compiler/generic-node.h"
+#include "src/compiler/opcodes.h"
+#include "src/compiler/operator.h"
+#include "src/types.h"
+#include "src/zone.h"
+#include "src/zone-allocator.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+class NodeData {
+ public:
+  Operator* op() const { return op_; }
+  void set_op(Operator* op) { op_ = op; }
+
+  IrOpcode::Value opcode() const {
+    ASSERT(op_->opcode() <= IrOpcode::kLast);
+    return static_cast<IrOpcode::Value>(op_->opcode());
+  }
+
+  Bounds bounds() { return bounds_; }
+
+ protected:
+  Operator* op_;
+  Bounds bounds_;
+  explicit NodeData(Zone* zone) : bounds_(Bounds(Type::None(zone))) {}
+
+  friend class NodeProperties;
+  void set_bounds(Bounds b) { bounds_ = b; }
+};
+
+// A Node is the basic primitive of an IR graph. In addition to the members
+// inherited from Vector, Nodes only contain a mutable Operator that may change
+// during compilation, e.g. during lowering passes.  Other information that
+// needs to be associated with Nodes during compilation must be stored
+// out-of-line indexed by the Node's id.
+class Node : public GenericNode<NodeData, Node> {
+ public:
+  Node(GenericGraphBase* graph, int input_count)
+      : GenericNode<NodeData, Node>(graph, input_count) {}
+
+  void Initialize(Operator* op) { set_op(op); }
+};
+
+OStream& operator<<(OStream& os, const Node& n);
+
+typedef GenericGraphVisit::NullNodeVisitor<NodeData, Node> NullNodeVisitor;
+
+typedef zone_allocator<Node*> NodePtrZoneAllocator;
+
+typedef std::set<Node*, std::less<Node*>, NodePtrZoneAllocator> NodeSet;
+typedef NodeSet::iterator NodeSetIter;
+typedef NodeSet::reverse_iterator NodeSetRIter;
+
+typedef std::deque<Node*, NodePtrZoneAllocator> NodeDeque;
+typedef NodeDeque::iterator NodeDequeIter;
+
+typedef std::vector<Node*, NodePtrZoneAllocator> NodeVector;
+typedef NodeVector::iterator NodeVectorIter;
+typedef NodeVector::reverse_iterator NodeVectorRIter;
+
+typedef zone_allocator<NodeVector> ZoneNodeVectorAllocator;
+typedef std::vector<NodeVector, ZoneNodeVectorAllocator> NodeVectorVector;
+typedef NodeVectorVector::iterator NodeVectorVectorIter;
+typedef NodeVectorVector::reverse_iterator NodeVectorVectorRIter;
+
+typedef Node::Uses::iterator UseIter;
+typedef Node::Inputs::iterator InputIter;
+
+// Helper to extract parameters from Operator1<*> nodes.
+template <typename T>
+static inline T OpParameter(Node* node) {
+  return reinterpret_cast<Operator1<T>*>(node->op())->parameter();
+}
+}
+}
+}  // namespace v8::internal::compiler
+
+#endif  // V8_COMPILER_NODE_H_