1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/compiler/graph.h" 6 7 #include <algorithm> 8 9 #include "src/base/bits.h" 10 #include "src/compiler/graph-visualizer.h" 11 #include "src/compiler/node-properties.h" 12 #include "src/compiler/node.h" 13 #include "src/compiler/verifier.h" 14 15 namespace v8 { 16 namespace internal { 17 namespace compiler { 18 19 Graph::Graph(Zone* zone) 20 : zone_(zone), 21 start_(nullptr), 22 end_(nullptr), 23 mark_max_(0), 24 next_node_id_(0), 25 decorators_(zone) {} 26 27 28 void Graph::Decorate(Node* node) { 29 for (GraphDecorator* const decorator : decorators_) { 30 decorator->Decorate(node); 31 } 32 } 33 34 35 void Graph::AddDecorator(GraphDecorator* decorator) { 36 decorators_.push_back(decorator); 37 } 38 39 40 void Graph::RemoveDecorator(GraphDecorator* decorator) { 41 auto const it = std::find(decorators_.begin(), decorators_.end(), decorator); 42 DCHECK(it != decorators_.end()); 43 decorators_.erase(it); 44 } 45 46 Node* Graph::NewNode(const Operator* op, int input_count, Node* const* inputs, 47 bool incomplete) { 48 Node* node = NewNodeUnchecked(op, input_count, inputs, incomplete); 49 Verifier::VerifyNode(node); 50 return node; 51 } 52 53 Node* Graph::NewNodeUnchecked(const Operator* op, int input_count, 54 Node* const* inputs, bool incomplete) { 55 Node* const node = 56 Node::New(zone(), NextNodeId(), op, input_count, inputs, incomplete); 57 Decorate(node); 58 return node; 59 } 60 61 62 Node* Graph::CloneNode(const Node* node) { 63 DCHECK_NOT_NULL(node); 64 Node* const clone = Node::Clone(zone(), NextNodeId(), node); 65 Decorate(clone); 66 return clone; 67 } 68 69 70 NodeId Graph::NextNodeId() { 71 NodeId const id = next_node_id_; 72 CHECK(!base::bits::UnsignedAddOverflow32(id, 1, &next_node_id_)); 73 return id; 74 } 75 76 void Graph::Print() const { 77 OFStream os(stdout); 78 os << AsRPO(*this); 79 } 80 81 } // namespace compiler 82 } // namespace internal 83 } // namespace v8 84
