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1 // Copyright 2014 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/compiler/js-builtin-reducer.h" | 5 #include "src/compiler/js-builtin-reducer.h" |
6 | 6 |
7 #include "src/base/bits.h" | 7 #include "src/base/bits.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/compilation-dependencies.h" | 9 #include "src/compilation-dependencies.h" |
10 #include "src/compiler/access-builder.h" | 10 #include "src/compiler/access-builder.h" |
11 #include "src/compiler/js-graph.h" | 11 #include "src/compiler/js-graph.h" |
12 #include "src/compiler/linkage.h" | 12 #include "src/compiler/linkage.h" |
13 #include "src/compiler/node-matchers.h" | 13 #include "src/compiler/node-matchers.h" |
14 #include "src/compiler/node-properties.h" | 14 #include "src/compiler/node-properties.h" |
15 #include "src/compiler/simplified-operator.h" | 15 #include "src/compiler/simplified-operator.h" |
16 #include "src/compiler/type-cache.h" | 16 #include "src/compiler/type-cache.h" |
17 #include "src/compiler/types.h" | 17 #include "src/compiler/types.h" |
18 #include "src/objects-inl.h" | 18 #include "src/objects-inl.h" |
19 | 19 |
20 namespace v8 { | 20 namespace v8 { |
21 namespace internal { | 21 namespace internal { |
22 namespace compiler { | 22 namespace compiler { |
23 | 23 |
24 | 24 // Helper class to access JSCall nodes that are potential candidates |
25 // Helper class to access JSCallFunction nodes that are potential candidates | |
26 // for reduction when they have a BuiltinFunctionId associated with them. | 25 // for reduction when they have a BuiltinFunctionId associated with them. |
27 class JSCallReduction { | 26 class JSCallReduction { |
28 public: | 27 public: |
29 explicit JSCallReduction(Node* node) : node_(node) {} | 28 explicit JSCallReduction(Node* node) : node_(node) {} |
30 | 29 |
31 // Determines whether the node is a JSCallFunction operation that targets a | 30 // Determines whether the node is a JSCall operation that targets a |
32 // constant callee being a well-known builtin with a BuiltinFunctionId. | 31 // constant callee being a well-known builtin with a BuiltinFunctionId. |
33 bool HasBuiltinFunctionId() { | 32 bool HasBuiltinFunctionId() { |
34 if (node_->opcode() != IrOpcode::kJSCallFunction) return false; | 33 if (node_->opcode() != IrOpcode::kJSCall) return false; |
35 HeapObjectMatcher m(NodeProperties::GetValueInput(node_, 0)); | 34 HeapObjectMatcher m(NodeProperties::GetValueInput(node_, 0)); |
36 if (!m.HasValue() || !m.Value()->IsJSFunction()) return false; | 35 if (!m.HasValue() || !m.Value()->IsJSFunction()) return false; |
37 Handle<JSFunction> function = Handle<JSFunction>::cast(m.Value()); | 36 Handle<JSFunction> function = Handle<JSFunction>::cast(m.Value()); |
38 return function->shared()->HasBuiltinFunctionId(); | 37 return function->shared()->HasBuiltinFunctionId(); |
39 } | 38 } |
40 | 39 |
41 // Retrieves the BuiltinFunctionId as described above. | 40 // Retrieves the BuiltinFunctionId as described above. |
42 BuiltinFunctionId GetBuiltinFunctionId() { | 41 BuiltinFunctionId GetBuiltinFunctionId() { |
43 DCHECK_EQ(IrOpcode::kJSCallFunction, node_->opcode()); | 42 DCHECK_EQ(IrOpcode::kJSCall, node_->opcode()); |
44 HeapObjectMatcher m(NodeProperties::GetValueInput(node_, 0)); | 43 HeapObjectMatcher m(NodeProperties::GetValueInput(node_, 0)); |
45 Handle<JSFunction> function = Handle<JSFunction>::cast(m.Value()); | 44 Handle<JSFunction> function = Handle<JSFunction>::cast(m.Value()); |
46 return function->shared()->builtin_function_id(); | 45 return function->shared()->builtin_function_id(); |
47 } | 46 } |
48 | 47 |
49 bool ReceiverMatches(Type* type) { | 48 bool ReceiverMatches(Type* type) { |
50 return NodeProperties::GetType(receiver())->Is(type); | 49 return NodeProperties::GetType(receiver())->Is(type); |
51 } | 50 } |
52 | 51 |
53 // Determines whether the call takes zero inputs. | 52 // Determines whether the call takes zero inputs. |
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74 } | 73 } |
75 } | 74 } |
76 return true; | 75 return true; |
77 } | 76 } |
78 | 77 |
79 Node* receiver() { return NodeProperties::GetValueInput(node_, 1); } | 78 Node* receiver() { return NodeProperties::GetValueInput(node_, 1); } |
80 Node* left() { return GetJSCallInput(0); } | 79 Node* left() { return GetJSCallInput(0); } |
81 Node* right() { return GetJSCallInput(1); } | 80 Node* right() { return GetJSCallInput(1); } |
82 | 81 |
83 int GetJSCallArity() { | 82 int GetJSCallArity() { |
84 DCHECK_EQ(IrOpcode::kJSCallFunction, node_->opcode()); | 83 DCHECK_EQ(IrOpcode::kJSCall, node_->opcode()); |
85 // Skip first (i.e. callee) and second (i.e. receiver) operand. | 84 // Skip first (i.e. callee) and second (i.e. receiver) operand. |
86 return node_->op()->ValueInputCount() - 2; | 85 return node_->op()->ValueInputCount() - 2; |
87 } | 86 } |
88 | 87 |
89 Node* GetJSCallInput(int index) { | 88 Node* GetJSCallInput(int index) { |
90 DCHECK_EQ(IrOpcode::kJSCallFunction, node_->opcode()); | 89 DCHECK_EQ(IrOpcode::kJSCall, node_->opcode()); |
91 DCHECK_LT(index, GetJSCallArity()); | 90 DCHECK_LT(index, GetJSCallArity()); |
92 // Skip first (i.e. callee) and second (i.e. receiver) operand. | 91 // Skip first (i.e. callee) and second (i.e. receiver) operand. |
93 return NodeProperties::GetValueInput(node_, index + 2); | 92 return NodeProperties::GetValueInput(node_, index + 2); |
94 } | 93 } |
95 | 94 |
96 private: | 95 private: |
97 Node* node_; | 96 Node* node_; |
98 }; | 97 }; |
99 | 98 |
100 JSBuiltinReducer::JSBuiltinReducer(Editor* editor, JSGraph* jsgraph, | 99 JSBuiltinReducer::JSBuiltinReducer(Editor* editor, JSGraph* jsgraph, |
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2192 return jsgraph()->simplified(); | 2191 return jsgraph()->simplified(); |
2193 } | 2192 } |
2194 | 2193 |
2195 JSOperatorBuilder* JSBuiltinReducer::javascript() const { | 2194 JSOperatorBuilder* JSBuiltinReducer::javascript() const { |
2196 return jsgraph()->javascript(); | 2195 return jsgraph()->javascript(); |
2197 } | 2196 } |
2198 | 2197 |
2199 } // namespace compiler | 2198 } // namespace compiler |
2200 } // namespace internal | 2199 } // namespace internal |
2201 } // namespace v8 | 2200 } // namespace v8 |
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