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 
10 namespace v8 {
11 namespace internal {
12 
13 // Forward declarations.
14 class ExternalReference;
15 class HeapObject;
16 template <typename>
17 class Handle;
18 
19 
20 namespace compiler {
21 
22 // Bundles various caches for common nodes.
23 class CommonNodeCache final {
24  public:
CommonNodeCache(Zone * zone)25   explicit CommonNodeCache(Zone* zone) : zone_(zone) {}
~CommonNodeCache()26   ~CommonNodeCache() {}
27 
FindInt32Constant(int32_t value)28   Node** FindInt32Constant(int32_t value) {
29     return int32_constants_.Find(zone(), value);
30   }
31 
FindInt64Constant(int64_t value)32   Node** FindInt64Constant(int64_t value) {
33     return int64_constants_.Find(zone(), value);
34   }
35 
FindFloat32Constant(float value)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 
FindFloat64Constant(double value)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 
FindNumberConstant(double value)48   Node** FindNumberConstant(double value) {
49     // We canonicalize double constants at the bit representation level.
50     return number_constants_.Find(zone(), bit_cast<int64_t>(value));
51   }
52 
53   Node** FindHeapConstant(Handle<HeapObject> value);
54 
55   // Return all nodes from the cache.
56   void GetCachedNodes(ZoneVector<Node*>* nodes);
57 
zone()58   Zone* zone() const { return zone_; }
59 
60  private:
61   Int32NodeCache int32_constants_;
62   Int64NodeCache int64_constants_;
63   Int32NodeCache float32_constants_;
64   Int64NodeCache float64_constants_;
65   IntPtrNodeCache external_constants_;
66   Int64NodeCache number_constants_;
67   IntPtrNodeCache heap_constants_;
68   Zone* const zone_;
69 
70   DISALLOW_COPY_AND_ASSIGN(CommonNodeCache);
71 };
72 
73 }  // namespace compiler
74 }  // namespace internal
75 }  // namespace v8
76 
77 #endif  // V8_COMPILER_COMMON_NODE_CACHE_H_
78