js-typed-lowering.h 3.51 KB
Newer Older
1 2 3 4
// Copyright 2014 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.

5 6
#ifndef V8_COMPILER_JS_TYPED_LOWERING_H_
#define V8_COMPILER_JS_TYPED_LOWERING_H_
7

8
#include "src/base/flags.h"
9
#include "src/compiler/graph-reducer.h"
10
#include "src/compiler/opcodes.h"
11 12 13

namespace v8 {
namespace internal {
14 15

// Forward declarations.
16
class CompilationDependencies;
17
class Factory;
18
class TypeCache;
19 20


21 22
namespace compiler {

23 24 25 26 27
// Forward declarations.
class CommonOperatorBuilder;
class JSGraph;
class JSOperatorBuilder;
class MachineOperatorBuilder;
28
class SimplifiedOperatorBuilder;
29 30


31
// Lowers JS-level operators to simplified operators based on types.
32
class JSTypedLowering final : public AdvancedReducer {
33
 public:
34 35 36 37
  // Flags that control the mode of operation.
  enum Flag {
    kNoFlags = 0u,
    kDeoptimizationEnabled = 1u << 0,
38
    kDisableBinaryOpReduction = 1u << 1,
39 40 41 42 43
  };
  typedef base::Flags<Flag> Flags;

  JSTypedLowering(Editor* editor, CompilationDependencies* dependencies,
                  Flags flags, JSGraph* jsgraph, Zone* zone);
44
  ~JSTypedLowering() final {}
45

46
  Reduction Reduce(Node* node) final;
47 48 49 50 51

 private:
  friend class JSBinopReduction;

  Reduction ReduceJSAdd(Node* node);
52
  Reduction ReduceJSModulus(Node* node);
53 54
  Reduction ReduceJSBitwiseOr(Node* node);
  Reduction ReduceJSMultiply(Node* node);
55
  Reduction ReduceJSComparison(Node* node);
56
  Reduction ReduceJSLoadNamed(Node* node);
57 58
  Reduction ReduceJSLoadProperty(Node* node);
  Reduction ReduceJSStoreProperty(Node* node);
59
  Reduction ReduceJSInstanceOf(Node* node);
60 61
  Reduction ReduceJSLoadContext(Node* node);
  Reduction ReduceJSStoreContext(Node* node);
62 63
  Reduction ReduceJSEqual(Node* node, bool invert);
  Reduction ReduceJSStrictEqual(Node* node, bool invert);
64
  Reduction ReduceJSToBoolean(Node* node);
65 66
  Reduction ReduceJSToInteger(Node* node);
  Reduction ReduceJSToLength(Node* node);
67
  Reduction ReduceJSToNumberInput(Node* input);
68
  Reduction ReduceJSToNumber(Node* node);
69
  Reduction ReduceJSToStringInput(Node* input);
70
  Reduction ReduceJSToString(Node* node);
71
  Reduction ReduceJSToObject(Node* node);
72
  Reduction ReduceJSConvertReceiver(Node* node);
73
  Reduction ReduceJSCallConstruct(Node* node);
74
  Reduction ReduceJSCallFunction(Node* node);
75 76 77
  Reduction ReduceJSForInDone(Node* node);
  Reduction ReduceJSForInNext(Node* node);
  Reduction ReduceJSForInStep(Node* node);
78
  Reduction ReduceSelect(Node* node);
79
  Reduction ReduceNumberBinop(Node* node, const Operator* numberOp);
80 81 82
  Reduction ReduceInt32Binop(Node* node, const Operator* intOp);
  Reduction ReduceUI32Shift(Node* node, Signedness left_signedness,
                            const Operator* shift_op);
83

84 85
  Node* Word32Shl(Node* const lhs, int32_t const rhs);

86 87 88
  Factory* factory() const;
  Graph* graph() const;
  JSGraph* jsgraph() const { return jsgraph_; }
89
  Isolate* isolate() const;
90 91
  JSOperatorBuilder* javascript() const;
  CommonOperatorBuilder* common() const;
92
  SimplifiedOperatorBuilder* simplified() const;
93
  MachineOperatorBuilder* machine() const;
94 95
  CompilationDependencies* dependencies() const;
  Flags flags() const { return flags_; }
96

97 98
  CompilationDependencies* dependencies_;
  Flags flags_;
99
  JSGraph* jsgraph_;
100
  Type* shifted_int32_ranges_[4];
101 102
  Type* const true_type_;
  Type* const false_type_;
103
  Type* const the_hole_type_;
104
  TypeCache const& type_cache_;
105
};
106

107 108
DEFINE_OPERATORS_FOR_FLAGS(JSTypedLowering::Flags)

109 110 111
}  // namespace compiler
}  // namespace internal
}  // namespace v8
112

113
#endif  // V8_COMPILER_JS_TYPED_LOWERING_H_