1// Copyright 2014 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_COMMON_NODE_CACHE_H_
6#define V8_COMPILER_COMMON_NODE_CACHE_H_
7
8#include "src/compiler/node-cache.h"
9
10namespace v8 {
11namespace internal {
12
13// Forward declarations.
14class ExternalReference;
15class HeapObject;
16template <typename>
17class Handle;
18
19
20namespace compiler {
21
22// Bundles various caches for common nodes.
23class CommonNodeCache final {
24 public:
25  explicit CommonNodeCache(Zone* zone) : zone_(zone) {}
26  ~CommonNodeCache() {}
27
28  Node** FindInt32Constant(int32_t value) {
29    return int32_constants_.Find(zone(), value);
30  }
31
32  Node** FindInt64Constant(int64_t value) {
33    return int64_constants_.Find(zone(), value);
34  }
35
36  Node** FindFloat32Constant(float value) {
37    // We canonicalize float constants at the bit representation level.
38    return float32_constants_.Find(zone(), bit_cast<int32_t>(value));
39  }
40
41  Node** FindFloat64Constant(double value) {
42    // We canonicalize double constants at the bit representation level.
43    return float64_constants_.Find(zone(), bit_cast<int64_t>(value));
44  }
45
46  Node** FindExternalConstant(ExternalReference value);
47
48  Node** FindPointerConstant(intptr_t value) {
49    return pointer_constants_.Find(zone(), value);
50  }
51
52  Node** FindNumberConstant(double value) {
53    // We canonicalize double constants at the bit representation level.
54    return number_constants_.Find(zone(), bit_cast<int64_t>(value));
55  }
56
57  Node** FindHeapConstant(Handle<HeapObject> value);
58
59  Node** FindRelocatableInt32Constant(int32_t value, RelocInfoMode rmode) {
60    return relocatable_int32_constants_.Find(zone(),
61                                             std::make_pair(value, rmode));
62  }
63
64  Node** FindRelocatableInt64Constant(int64_t value, RelocInfoMode rmode) {
65    return relocatable_int64_constants_.Find(zone(),
66                                             std::make_pair(value, rmode));
67  }
68
69  // Return all nodes from the cache.
70  void GetCachedNodes(ZoneVector<Node*>* nodes);
71
72  Zone* zone() const { return zone_; }
73
74 private:
75  Int32NodeCache int32_constants_;
76  Int64NodeCache int64_constants_;
77  Int32NodeCache float32_constants_;
78  Int64NodeCache float64_constants_;
79  IntPtrNodeCache external_constants_;
80  IntPtrNodeCache pointer_constants_;
81  Int64NodeCache number_constants_;
82  IntPtrNodeCache heap_constants_;
83  RelocInt32NodeCache relocatable_int32_constants_;
84  RelocInt64NodeCache relocatable_int64_constants_;
85  Zone* const zone_;
86
87  DISALLOW_COPY_AND_ASSIGN(CommonNodeCache);
88};
89
90}  // namespace compiler
91}  // namespace internal
92}  // namespace v8
93
94#endif  // V8_COMPILER_COMMON_NODE_CACHE_H_
95