1// Copyright 2018 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#ifndef V8_COMPILER_MACHINE_GRAPH_H_
6#define V8_COMPILER_MACHINE_GRAPH_H_
7
8#include "src/base/compiler-specific.h"
9#include "src/common/globals.h"
10#include "src/compiler/common-node-cache.h"
11#include "src/compiler/common-operator.h"
12#include "src/compiler/graph.h"
13#include "src/compiler/machine-operator.h"
14#include "src/runtime/runtime.h"
15
16namespace v8 {
17namespace internal {
18namespace compiler {
19
20// Implements a facade on a Graph, enhancing the graph with machine-specific
21// notions, including a builder for common and machine operators, as well
22// as caching primitive constants.
23class V8_EXPORT_PRIVATE MachineGraph : public NON_EXPORTED_BASE(ZoneObject) {
24 public:
25  MachineGraph(Graph* graph, CommonOperatorBuilder* common,
26               MachineOperatorBuilder* machine)
27      : graph_(graph), common_(common), machine_(machine), cache_(zone()) {}
28  MachineGraph(const MachineGraph&) = delete;
29  MachineGraph& operator=(const MachineGraph&) = delete;
30
31  // Creates a Int32Constant node, usually canonicalized.
32  Node* Int32Constant(int32_t value);
33  Node* Uint32Constant(uint32_t value) {
34    return Int32Constant(bit_cast<int32_t>(value));
35  }
36
37  // Creates a Int64Constant node, usually canonicalized.
38  Node* Int64Constant(int64_t value);
39  Node* Uint64Constant(uint64_t value) {
40    return Int64Constant(bit_cast<int64_t>(value));
41  }
42
43  // Creates a Int32Constant/Int64Constant node, depending on the word size of
44  // the target machine.
45  // TODO(turbofan): Code using Int32Constant/Int64Constant to store pointer
46  // constants is probably not serializable.
47  Node* IntPtrConstant(intptr_t value);
48  Node* UintPtrConstant(uintptr_t value);
49
50  Node* TaggedIndexConstant(intptr_t value);
51
52  Node* RelocatableInt32Constant(int32_t value, RelocInfo::Mode rmode);
53  Node* RelocatableInt64Constant(int64_t value, RelocInfo::Mode rmode);
54  Node* RelocatableIntPtrConstant(intptr_t value, RelocInfo::Mode rmode);
55
56  // Creates a Float32Constant node, usually canonicalized.
57  Node* Float32Constant(float value);
58
59  // Creates a Float64Constant node, usually canonicalized.
60  Node* Float64Constant(double value);
61
62  // Creates a PointerConstant node.
63  Node* PointerConstant(intptr_t value);
64  template <typename T>
65  Node* PointerConstant(T* value) {
66    return PointerConstant(bit_cast<intptr_t>(value));
67  }
68
69  // Creates an ExternalConstant node, usually canonicalized.
70  Node* ExternalConstant(ExternalReference ref);
71  Node* ExternalConstant(Runtime::FunctionId function_id);
72
73  // Global cache of the dead node.
74  Node* Dead() {
75    return Dead_ ? Dead_ : Dead_ = graph_->NewNode(common_->Dead());
76  }
77
78  CommonOperatorBuilder* common() const { return common_; }
79  MachineOperatorBuilder* machine() const { return machine_; }
80  Graph* graph() const { return graph_; }
81  Zone* zone() const { return graph()->zone(); }
82
83 protected:
84  Graph* graph_;
85  CommonOperatorBuilder* common_;
86  MachineOperatorBuilder* machine_;
87  CommonNodeCache cache_;
88  Node* Dead_ = nullptr;
89};
90
91}  // namespace compiler
92}  // namespace internal
93}  // namespace v8
94
95#endif  // V8_COMPILER_MACHINE_GRAPH_H_
96