blob: f6263385edca6a938034fe7f36b0e479d171a10e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// 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.
#ifndef V8_COMPILER_JS_GENERIC_LOWERING_H_
#define V8_COMPILER_JS_GENERIC_LOWERING_H_
#include "src/allocation.h"
#include "src/code-factory.h"
#include "src/compiler/graph.h"
#include "src/compiler/graph-reducer.h"
#include "src/compiler/js-graph.h"
#include "src/compiler/linkage.h"
#include "src/compiler/opcodes.h"
namespace v8 {
namespace internal {
namespace compiler {
// Forward declarations.
class CommonOperatorBuilder;
class MachineOperatorBuilder;
class Linkage;
// Lowers JS-level operators to runtime and IC calls in the "generic" case.
class JSGenericLowering FINAL : public Reducer {
public:
JSGenericLowering(CompilationInfo* info, JSGraph* graph);
~JSGenericLowering() FINAL {}
Reduction Reduce(Node* node) FINAL;
protected:
#define DECLARE_LOWER(x) void Lower##x(Node* node);
// Dispatched depending on opcode.
JS_OP_LIST(DECLARE_LOWER)
#undef DECLARE_LOWER
// Helpers to patch existing nodes in the graph.
void PatchOperator(Node* node, const Operator* new_op);
void PatchInsertInput(Node* node, int index, Node* input);
// Helpers to replace existing nodes with a generic call.
void ReplaceWithCompareIC(Node* node, Token::Value token);
void ReplaceWithStubCall(Node* node, Callable c, CallDescriptor::Flags flags);
void ReplaceWithBuiltinCall(Node* node, Builtins::JavaScript id, int args);
void ReplaceWithRuntimeCall(Node* node, Runtime::FunctionId f, int args = -1);
// Helper for optimization of JSCallFunction.
bool TryLowerDirectJSCall(Node* node);
Zone* zone() const { return graph()->zone(); }
Isolate* isolate() const { return zone()->isolate(); }
JSGraph* jsgraph() const { return jsgraph_; }
Graph* graph() const { return jsgraph()->graph(); }
Linkage* linkage() const { return linkage_; }
CompilationInfo* info() const { return info_; }
CommonOperatorBuilder* common() const { return jsgraph()->common(); }
MachineOperatorBuilder* machine() const { return jsgraph()->machine(); }
private:
CompilationInfo* info_;
JSGraph* jsgraph_;
Linkage* linkage_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_JS_GENERIC_LOWERING_H_
|
